Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2: (31 commits)
ocfs2: avoid unaligned access to dqc_bitmap
ocfs2: Use filemap_write_and_wait() instead of write_inode_now()
ocfs2: honor O_(D)SYNC flag in fallocate
ocfs2: Add a missing journal credit in ocfs2_link_credits() -v2
ocfs2: send correct UUID to cleancache initialization
ocfs2: Commit transactions in error cases -v2
ocfs2: make direntry invalid when deleting it
fs/ocfs2/dlm/dlmlock.c: free kmem_cache_zalloc'd data using kmem_cache_free
ocfs2: Avoid livelock in ocfs2_readpage()
ocfs2: serialize unaligned aio
ocfs2: Implement llseek()
ocfs2: Fix ocfs2_page_mkwrite()
ocfs2: Add comment about orphan scanning
ocfs2: Clean up messages in the fs
ocfs2/cluster: Cluster up now includes network connections too
ocfs2/cluster: Add new function o2net_fill_node_map()
ocfs2/cluster: Fix output in file elapsed_time_in_ms
ocfs2/dlm: dlmlock_remote() needs to account for remastery
ocfs2/dlm: Take inflight reference count for remotely mastered resources too
ocfs2/dlm: Cleanup dlm_wait_for_node_death() and dlm_wait_for_node_recovery()
...
diff --git a/.gitignore b/.gitignore
index 9dacde0..57af07c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -46,6 +46,11 @@
/Module.symvers
#
+# Debian directory (make deb-pkg)
+#
+/debian/
+
+#
# git files that we don't want to ignore even it they are dot-files
#
!.gitignore
diff --git a/.mailmap b/.mailmap
index 353ad56..9b0d026 100644
--- a/.mailmap
+++ b/.mailmap
@@ -68,13 +68,13 @@
Kay Sievers <kay.sievers@vrfy.org>
Kenneth W Chen <kenneth.w.chen@intel.com>
Koushik <raghavendra.koushik@neterion.com>
+Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Leonid I Ananiev <leonid.i.ananiev@intel.com>
Linas Vepstas <linas@austin.ibm.com>
Mark Brown <broonie@sirena.org.uk>
Matthieu CASTET <castet.matthieu@free.fr>
Mayuresh Janorkar <mayur@ti.com>
-Michael Buesch <mb@bu3sch.de>
-Michael Buesch <mbuesch@freenet.de>
+Michael Buesch <m@bues.ch>
Michel Dänzer <michel@tungstengraphics.com>
Mitesh shah <mshah@teja.com>
Morten Welinder <terra@gnome.org>
@@ -112,3 +112,4 @@
Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Takashi YOSHII <takashi.yoshii.zj@renesas.com>
+Yusuke Goda <goda.yusuke@renesas.com>
diff --git a/CREDITS b/CREDITS
index 1deb331..07e32a8 100644
--- a/CREDITS
+++ b/CREDITS
@@ -504,7 +504,7 @@
E: linux@brodo.de
W: http://www.brodo.de/
P: 1024D/725B37C6 190F 3E77 9C89 3B6D BECD 46EE 67C3 0308 725B 37C6
-D: parts of CPUFreq code, ACPI bugfixes
+D: parts of CPUFreq code, ACPI bugfixes, PCMCIA rewrite, cpufrequtils
S: Tuebingen, Germany
N: Andries Brouwer
@@ -857,6 +857,10 @@
S: Round Rock, TX 78682
S: USA
+N: Mattia Dongili
+E: malattia@gmail.com
+D: cpufrequtils (precursor to cpupowerutils)
+
N: Ben Dooks
E: ben-linux@fluff.org
E: ben@simtec.co.uk
@@ -1883,6 +1887,11 @@
S: 1098 VA Amsterdam
S: The Netherlands
+N: Goran Koruga
+E: korugag@siol.net
+D: cpufrequtils (precursor to cpupowerutils)
+S: Slovenia
+
N: Jiri Kosina
E: jikos@jikos.cz
E: jkosina@suse.cz
@@ -2916,6 +2925,12 @@
S: 79098 Freiburg
S: Germany
+N: Thomas Renninger
+E: trenn@suse.de
+D: cpupowerutils
+S: SUSE Linux GmbH
+S: Germany
+
N: Joerg Reuter
E: jreuter@yaina.de
W: http://yaina.de/jreuter/
diff --git a/Documentation/00-INDEX b/Documentation/00-INDEX
index 1f89424..65bbd26 100644
--- a/Documentation/00-INDEX
+++ b/Documentation/00-INDEX
@@ -272,6 +272,8 @@
- how to get printk format specifiers right
prio_tree.txt
- info on radix-priority-search-tree use for indexing vmas.
+ramoops.txt
+ - documentation of the ramoops oops/panic logging module.
rbtree.txt
- info on what red-black trees are and what they are for.
robust-futex-ABI.txt
diff --git a/Documentation/ABI/obsolete/proc-pid-oom_adj b/Documentation/ABI/obsolete/proc-pid-oom_adj
index cf63f26..9a3cb88 100644
--- a/Documentation/ABI/obsolete/proc-pid-oom_adj
+++ b/Documentation/ABI/obsolete/proc-pid-oom_adj
@@ -14,7 +14,7 @@
A much more powerful interface, /proc/<pid>/oom_score_adj, was
introduced with the oom killer rewrite that allows users to increase or
- decrease the badness() score linearly. This interface will replace
+ decrease the badness score linearly. This interface will replace
/proc/<pid>/oom_adj.
A warning will be emitted to the kernel log if an application uses this
diff --git a/Documentation/ABI/removed/o2cb b/Documentation/ABI/removed/o2cb
index 7f5daa4..20c91ad 100644
--- a/Documentation/ABI/removed/o2cb
+++ b/Documentation/ABI/removed/o2cb
@@ -1,6 +1,6 @@
What: /sys/o2cb symlink
Date: May 2011
-KernelVersion: 2.6.40
+KernelVersion: 3.0
Contact: ocfs2-devel@oss.oracle.com
Description: This is a symlink: /sys/o2cb to /sys/fs/o2cb. The symlink is
removed when new versions of ocfs2-tools which know to look
diff --git a/Documentation/ABI/removed/raw1394 b/Documentation/ABI/removed/raw1394
index 490aa1e..ec333e6 100644
--- a/Documentation/ABI/removed/raw1394
+++ b/Documentation/ABI/removed/raw1394
@@ -5,7 +5,7 @@
/dev/raw1394 was a character device file that allowed low-level
access to FireWire buses. Its major drawbacks were its inability
to implement sensible device security policies, and its low level
- of abstraction that required userspace clients do duplicate much
+ of abstraction that required userspace clients to duplicate much
of the kernel's ieee1394 core functionality.
Replaced by /dev/fw*, i.e. the <linux/firewire-cdev.h> ABI of
firewire-core.
diff --git a/Documentation/ABI/stable/sysfs-acpi-pmprofile b/Documentation/ABI/stable/sysfs-acpi-pmprofile
new file mode 100644
index 0000000..964c7a8
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-acpi-pmprofile
@@ -0,0 +1,22 @@
+What: /sys/firmware/acpi/pm_profile
+Date: 03-Nov-2011
+KernelVersion: v3.2
+Contact: linux-acpi@vger.kernel.org
+Description: The ACPI pm_profile sysfs interface exports the platform
+ power management (and performance) requirement expectations
+ as provided by BIOS. The integer value is directly passed as
+ retrieved from the FADT ACPI table.
+Values: For possible values see ACPI specification:
+ 5.2.9 Fixed ACPI Description Table (FADT)
+ Field: Preferred_PM_Profile
+
+ Currently these values are defined by spec:
+ 0 Unspecified
+ 1 Desktop
+ 2 Mobile
+ 3 Workstation
+ 4 Enterprise Server
+ 5 SOHO Server
+ 6 Appliance PC
+ 7 Performance Server
+ >7 Reserved
diff --git a/Documentation/ABI/testing/debugfs-ideapad b/Documentation/ABI/testing/debugfs-ideapad
new file mode 100644
index 0000000..7079c0b
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-ideapad
@@ -0,0 +1,19 @@
+What: /sys/kernel/debug/ideapad/cfg
+Date: Sep 2011
+KernelVersion: 3.2
+Contact: Ike Panhc <ike.pan@canonical.com>
+Description:
+
+cfg shows the return value of _CFG method in VPC2004 device. It tells machine
+capability and what graphic component within the machine.
+
+
+What: /sys/kernel/debug/ideapad/status
+Date: Sep 2011
+KernelVersion: 3.2
+Contact: Ike Panhc <ike.pan@canonical.com>
+Description:
+
+status shows infos we can read and tells its meaning and value.
+
+
diff --git a/Documentation/ABI/testing/evm b/Documentation/ABI/testing/evm
new file mode 100644
index 0000000..8374d45
--- /dev/null
+++ b/Documentation/ABI/testing/evm
@@ -0,0 +1,23 @@
+What: security/evm
+Date: March 2011
+Contact: Mimi Zohar <zohar@us.ibm.com>
+Description:
+ EVM protects a file's security extended attributes(xattrs)
+ against integrity attacks. The initial method maintains an
+ HMAC-sha1 value across the extended attributes, storing the
+ value as the extended attribute 'security.evm'.
+
+ EVM depends on the Kernel Key Retention System to provide it
+ with a trusted/encrypted key for the HMAC-sha1 operation.
+ The key is loaded onto the root's keyring using keyctl. Until
+ EVM receives notification that the key has been successfully
+ loaded onto the keyring (echo 1 > <securityfs>/evm), EVM
+ can not create or validate the 'security.evm' xattr, but
+ returns INTEGRITY_UNKNOWN. Loading the key and signaling EVM
+ should be done as early as possible. Normally this is done
+ in the initramfs, which has already been measured as part
+ of the trusted boot. For more information on creating and
+ loading existing trusted/encrypted keys, refer to:
+ Documentation/keys-trusted-encrypted.txt. (A sample dracut
+ patch, which loads the trusted/encrypted key and enables
+ EVM, is available from http://linux-ima.sourceforge.net/#EVM.)
diff --git a/Documentation/ABI/testing/pstore b/Documentation/ABI/testing/pstore
index ddf451e..ff1df4e 100644
--- a/Documentation/ABI/testing/pstore
+++ b/Documentation/ABI/testing/pstore
@@ -39,3 +39,9 @@
multiple) files based on the record size of the underlying
persistent storage until at least this amount is reached.
Default is 10 Kbytes.
+
+ Pstore only supports one backend at a time. If multiple
+ backends are available, the preferred backend may be
+ set by passing the pstore.backend= argument to the kernel at
+ boot time.
+
diff --git a/Documentation/ABI/testing/sysfs-bus-bcma b/Documentation/ABI/testing/sysfs-bus-bcma
index 06b62ba..721b4ae 100644
--- a/Documentation/ABI/testing/sysfs-bus-bcma
+++ b/Documentation/ABI/testing/sysfs-bus-bcma
@@ -1,6 +1,6 @@
What: /sys/bus/bcma/devices/.../manuf
Date: May 2011
-KernelVersion: 2.6.40
+KernelVersion: 3.0
Contact: Rafał Miłecki <zajec5@gmail.com>
Description:
Each BCMA core has it's manufacturer id. See
@@ -8,7 +8,7 @@
What: /sys/bus/bcma/devices/.../id
Date: May 2011
-KernelVersion: 2.6.40
+KernelVersion: 3.0
Contact: Rafał Miłecki <zajec5@gmail.com>
Description:
There are a few types of BCMA cores, they can be identified by
@@ -16,7 +16,7 @@
What: /sys/bus/bcma/devices/.../rev
Date: May 2011
-KernelVersion: 2.6.40
+KernelVersion: 3.0
Contact: Rafał Miłecki <zajec5@gmail.com>
Description:
BCMA cores of the same type can still slightly differ depending
@@ -24,7 +24,7 @@
What: /sys/bus/bcma/devices/.../class
Date: May 2011
-KernelVersion: 2.6.40
+KernelVersion: 3.0
Contact: Rafał Miłecki <zajec5@gmail.com>
Description:
Each BCMA core is identified by few fields, including class it
diff --git a/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480 b/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480
new file mode 100644
index 0000000..9de269b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480
@@ -0,0 +1,21 @@
+What: /sys/bus/i2c/devices/.../device
+Date: February 2011
+Contact: Minkyu Kang <mk7.kang@samsung.com>
+Description:
+ show what device is attached
+ NONE - no device
+ USB - USB device is attached
+ UART - UART is attached
+ CHARGER - Charger is attaced
+ JIG - JIG is attached
+
+What: /sys/bus/i2c/devices/.../switch
+Date: February 2011
+Contact: Minkyu Kang <mk7.kang@samsung.com>
+Description:
+ show or set the state of manual switch
+ VAUDIO - switch to VAUDIO path
+ UART - switch to UART path
+ AUDIO - switch to AUDIO path
+ DHOST - switch to DHOST path
+ AUTO - switch automatically by device
diff --git a/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss b/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss
index f5bb0a3..53d99ed 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss
+++ b/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss
@@ -71,3 +71,10 @@
a dump device, as kdump requires resetting the device in order
to work reliably.
+Where: /sys/bus/pci/devices/<dev>/ccissX/transport_mode
+Date: July 2011
+Kernel Version: 3.0
+Contact: iss_storagedev@hp.com
+Description: Value of "simple" indicates that the controller has been placed
+ in "simple mode". Value of "performant" indicates that the
+ controller has been placed in "performant mode".
diff --git a/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd b/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd
new file mode 100644
index 0000000..60c60fa
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd
@@ -0,0 +1,46 @@
+What: /sys/bus/pci/drivers/ehci_hcd/.../companion
+ /sys/bus/usb/devices/usbN/../companion
+Date: January 2007
+KernelVersion: 2.6.21
+Contact: Alan Stern <stern@rowland.harvard.edu>
+Description:
+ PCI-based EHCI USB controllers (i.e., high-speed USB-2.0
+ controllers) are often implemented along with a set of
+ "companion" full/low-speed USB-1.1 controllers. When a
+ high-speed device is plugged in, the connection is routed
+ to the EHCI controller; when a full- or low-speed device
+ is plugged in, the connection is routed to the companion
+ controller.
+
+ Sometimes you want to force a high-speed device to connect
+ at full speed, which can be accomplished by forcing the
+ connection to be routed to the companion controller.
+ That's what this file does. Writing a port number to the
+ file causes connections on that port to be routed to the
+ companion controller, and writing the negative of a port
+ number returns the port to normal operation.
+
+ For example: To force the high-speed device attached to
+ port 4 on bus 2 to run at full speed:
+
+ echo 4 >/sys/bus/usb/devices/usb2/../companion
+
+ To return the port to high-speed operation:
+
+ echo -4 >/sys/bus/usb/devices/usb2/../companion
+
+ Reading the file gives the list of ports currently forced
+ to the companion controller.
+
+ Note: Some EHCI controllers do not have companions; they
+ may contain an internal "transaction translator" or they
+ may be attached directly to a "rate-matching hub". This
+ mechanism will not work with such controllers. Also, it
+ cannot be used to force a port on a high-speed hub to
+ connect at full speed.
+
+ Note: When this file was first added, it appeared in a
+ different sysfs directory. The location given above is
+ correct for 2.6.35 (and probably several earlier kernel
+ versions as well).
+
diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb
index 294aa86..e647378 100644
--- a/Documentation/ABI/testing/sysfs-bus-usb
+++ b/Documentation/ABI/testing/sysfs-bus-usb
@@ -142,3 +142,18 @@
such devices.
Users:
usb_modeswitch
+
+What: /sys/bus/usb/devices/.../power/usb2_hardware_lpm
+Date: September 2011
+Contact: Andiry Xu <andiry.xu@amd.com>
+Description:
+ If CONFIG_USB_SUSPEND is set and a USB 2.0 lpm-capable device
+ is plugged in to a xHCI host which support link PM, it will
+ perform a LPM test; if the test is passed and host supports
+ USB2 hardware LPM (xHCI 1.0 feature), USB2 hardware LPM will
+ be enabled for the device and the USB device directory will
+ contain a file named power/usb2_hardware_lpm. The file holds
+ a string value (enable or disable) indicating whether or not
+ USB2 hardware LPM is enabled for the device. Developer can
+ write y/Y/1 or n/N/0 to the file to enable/disable the
+ feature.
diff --git a/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870 b/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870
index aa11dbd..4a9c545 100644
--- a/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870
+++ b/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870
@@ -4,8 +4,8 @@
What: /sys/class/backlight/<backlight>/l3_office_max
What: /sys/class/backlight/<backlight>/l4_indoor_max
What: /sys/class/backlight/<backlight>/l5_dark_max
-Date: Mai 2011
-KernelVersion: 2.6.40
+Date: May 2011
+KernelVersion: 3.0
Contact: device-drivers-devel@blackfin.uclinux.org
Description:
Control the maximum brightness for <ambient light zone>
@@ -18,8 +18,8 @@
What: /sys/class/backlight/<backlight>/l3_office_dim
What: /sys/class/backlight/<backlight>/l4_indoor_dim
What: /sys/class/backlight/<backlight>/l5_dark_dim
-Date: Mai 2011
-KernelVersion: 2.6.40
+Date: May 2011
+KernelVersion: 3.0
Contact: device-drivers-devel@blackfin.uclinux.org
Description:
Control the dim brightness for <ambient light zone>
@@ -29,8 +29,8 @@
this <ambient light zone>.
What: /sys/class/backlight/<backlight>/ambient_light_level
-Date: Mai 2011
-KernelVersion: 2.6.40
+Date: May 2011
+KernelVersion: 3.0
Contact: device-drivers-devel@blackfin.uclinux.org
Description:
Get conversion value of the light sensor.
@@ -39,8 +39,8 @@
8000 (max ambient brightness)
What: /sys/class/backlight/<backlight>/ambient_light_zone
-Date: Mai 2011
-KernelVersion: 2.6.40
+Date: May 2011
+KernelVersion: 3.0
Contact: device-drivers-devel@blackfin.uclinux.org
Description:
Get/Set current ambient light zone. Reading returns
diff --git a/Documentation/ABI/testing/sysfs-class-devfreq b/Documentation/ABI/testing/sysfs-class-devfreq
new file mode 100644
index 0000000..23d78b5
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-devfreq
@@ -0,0 +1,52 @@
+What: /sys/class/devfreq/.../
+Date: September 2011
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ Provide a place in sysfs for the devfreq objects.
+ This allows accessing various devfreq specific variables.
+ The name of devfreq object denoted as ... is same as the
+ name of device using devfreq.
+
+What: /sys/class/devfreq/.../governor
+Date: September 2011
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../governor shows the name of the
+ governor used by the corresponding devfreq object.
+
+What: /sys/class/devfreq/.../cur_freq
+Date: September 2011
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../cur_freq shows the current
+ frequency of the corresponding devfreq object.
+
+What: /sys/class/devfreq/.../central_polling
+Date: September 2011
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../central_polling shows whether
+ the devfreq ojbect is using devfreq-provided central
+ polling mechanism or not.
+
+What: /sys/class/devfreq/.../polling_interval
+Date: September 2011
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../polling_interval shows and sets
+ the requested polling interval of the corresponding devfreq
+ object. The values are represented in ms. If the value is
+ less than 1 jiffy, it is considered to be 0, which means
+ no polling. This value is meaningless if the governor is
+ not polling; thus. If the governor is not using
+ devfreq-provided central polling
+ (/sys/class/devfreq/.../central_polling is 0), this value
+ may be useless.
+
+What: /sys/class/devfreq/.../userspace/set_freq
+Date: September 2011
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../userspace/set_freq shows and
+ sets the requested frequency for the devfreq object if
+ userspace governor is in effect.
diff --git a/Documentation/ABI/testing/sysfs-class-net-mesh b/Documentation/ABI/testing/sysfs-class-net-mesh
index 748fe17..b020014 100644
--- a/Documentation/ABI/testing/sysfs-class-net-mesh
+++ b/Documentation/ABI/testing/sysfs-class-net-mesh
@@ -22,6 +22,14 @@
mesh will be fragmented or silently discarded if the
packet size exceeds the outgoing interface MTU.
+What: /sys/class/net/<mesh_iface>/mesh/ap_isolation
+Date: May 2011
+Contact: Antonio Quartulli <ordex@autistici.org>
+Description:
+ Indicates whether the data traffic going from a
+ wireless client to another wireless client will be
+ silently dropped.
+
What: /sys/class/net/<mesh_iface>/mesh/gw_bandwidth
Date: October 2010
Contact: Marek Lindner <lindner_marek@yahoo.de>
diff --git a/Documentation/ABI/testing/sysfs-class-scsi_host b/Documentation/ABI/testing/sysfs-class-scsi_host
new file mode 100644
index 0000000..29a4f89
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-scsi_host
@@ -0,0 +1,13 @@
+What: /sys/class/scsi_host/hostX/isci_id
+Date: June 2011
+Contact: Dave Jiang <dave.jiang@intel.com>
+Description:
+ This file contains the enumerated host ID for the Intel
+ SCU controller. The Intel(R) C600 Series Chipset SATA/SAS
+ Storage Control Unit embeds up to two 4-port controllers in
+ a single PCI device. The controllers are enumerated in order
+ which usually means the lowest number scsi_host corresponds
+ with the first controller, but this association is not
+ guaranteed. The 'isci_id' attribute unambiguously identifies
+ the controller index: '0' for the first controller,
+ '1' for the second.
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-logitech-lg4ff b/Documentation/ABI/testing/sysfs-driver-hid-logitech-lg4ff
new file mode 100644
index 0000000..9aec8ef
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-logitech-lg4ff
@@ -0,0 +1,7 @@
+What: /sys/module/hid_logitech/drivers/hid:logitech/<dev>/range.
+Date: July 2011
+KernelVersion: 3.2
+Contact: Michal Malý <madcatxster@gmail.com>
+Description: Display minimum, maximum and current range of the steering
+ wheel. Writing a value within min and max boundaries sets the
+ range of the wheel.
diff --git a/Documentation/ABI/testing/sysfs-driver-wacom b/Documentation/ABI/testing/sysfs-driver-wacom
new file mode 100644
index 0000000..82d4df1
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-wacom
@@ -0,0 +1,72 @@
+What: /sys/class/hidraw/hidraw*/device/speed
+Date: April 2010
+Kernel Version: 2.6.35
+Contact: linux-bluetooth@vger.kernel.org
+Description:
+ The /sys/class/hidraw/hidraw*/device/speed file controls
+ reporting speed of Wacom bluetooth tablet. Reading from
+ this file returns 1 if tablet reports in high speed mode
+ or 0 otherwise. Writing to this file one of these values
+ switches reporting speed.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/led
+Date: August 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ Attribute group for control of the status LEDs and the OLEDs.
+ This attribute group is only available for Intuos 4 M, L,
+ and XL (with LEDs and OLEDs) and Cintiq 21UX2 (LEDs only).
+ Therefore its presence implicitly signifies the presence of
+ said LEDs and OLEDs on the tablet device.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status0_luminance
+Date: August 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ Writing to this file sets the status LED luminance (1..127)
+ when the stylus does not touch the tablet surface, and no
+ button is pressed on the stylus. This luminance level is
+ normally lower than the level when a button is pressed.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status1_luminance
+Date: August 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ Writing to this file sets the status LED luminance (1..127)
+ when the stylus touches the tablet surface, or any button is
+ pressed on the stylus.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status_led0_select
+Date: August 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ Writing to this file sets which one of the four (for Intuos 4)
+ or of the right four (for Cintiq 21UX2) status LEDs is active (0..3).
+ The other three LEDs on the same side are always inactive.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status_led1_select
+Date: September 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ Writing to this file sets which one of the left four (for Cintiq 21UX2)
+ status LEDs is active (0..3). The other three LEDs on the left are always
+ inactive.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/buttons_luminance
+Date: August 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ Writing to this file sets the overall luminance level (0..15)
+ of all eight button OLED displays.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/button<n>_rawimg
+Date: August 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ When writing a 1024 byte raw image in Wacom Intuos 4
+ interleaving format to the file, the image shows up on Button N
+ of the device. The image is a 64x32 pixel 4-bit gray image. The
+ 1024 byte binary is split up into 16x 64 byte chunks. Each 64
+ byte chunk encodes the image data for two consecutive lines on
+ the display. The low nibble of each byte contains the first
+ line, and the high nibble contains the second line.
diff --git a/Documentation/ABI/testing/sysfs-module b/Documentation/ABI/testing/sysfs-module
index cfcec3b..9489ea8 100644
--- a/Documentation/ABI/testing/sysfs-module
+++ b/Documentation/ABI/testing/sysfs-module
@@ -10,3 +10,26 @@
Contact: masa-korg@dsn.okisemi.com
Description: Write/read Option ROM data.
+
+What: /sys/module/ehci_hcd/drivers/.../uframe_periodic_max
+Date: July 2011
+KernelVersion: 3.1
+Contact: Kirill Smelkov <kirr@mns.spb.ru>
+Description: Maximum time allowed for periodic transfers per microframe (μs)
+
+ [ USB 2.0 sets maximum allowed time for periodic transfers per
+ microframe to be 80%, that is 100 microseconds out of 125
+ microseconds (full microframe).
+
+ However there are cases, when 80% max isochronous bandwidth is
+ too limiting. For example two video streams could require 110
+ microseconds of isochronous bandwidth per microframe to work
+ together. ]
+
+ Through this setting it is possible to raise the limit so that
+ the host controller would allow allocating more than 100
+ microseconds of periodic bandwidth per microframe.
+
+ Beware, non-standard modes are usually not thoroughly tested by
+ hardware designers, and the hardware can malfunction when this
+ setting differ from default 100.
diff --git a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
index 807fca2..814b013 100644
--- a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
+++ b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
@@ -4,3 +4,5 @@
Contact: "Ike Panhc <ike.pan@canonical.com>"
Description:
Control the power of camera module. 1 means on, 0 means off.
+
+
diff --git a/Documentation/ABI/testing/sysfs-wacom b/Documentation/ABI/testing/sysfs-wacom
deleted file mode 100644
index 1517976..0000000
--- a/Documentation/ABI/testing/sysfs-wacom
+++ /dev/null
@@ -1,10 +0,0 @@
-What: /sys/class/hidraw/hidraw*/device/speed
-Date: April 2010
-Kernel Version: 2.6.35
-Contact: linux-bluetooth@vger.kernel.org
-Description:
- The /sys/class/hidraw/hidraw*/device/speed file controls
- reporting speed of wacom bluetooth tablet. Reading from
- this file returns 1 if tablet reports in high speed mode
- or 0 otherwise. Writing to this file one of these values
- switches reporting speed.
diff --git a/Documentation/CodingStyle b/Documentation/CodingStyle
index fa6e25b..2b90d32 100644
--- a/Documentation/CodingStyle
+++ b/Documentation/CodingStyle
@@ -80,22 +80,13 @@
The limit on the length of lines is 80 columns and this is a strongly
preferred limit.
-Statements longer than 80 columns will be broken into sensible chunks.
-Descendants are always substantially shorter than the parent and are placed
-substantially to the right. The same applies to function headers with a long
-argument list. Long strings are as well broken into shorter strings. The
-only exception to this is where exceeding 80 columns significantly increases
-readability and does not hide information.
+Statements longer than 80 columns will be broken into sensible chunks, unless
+exceeding 80 columns significantly increases readability and does not hide
+information. Descendants are always substantially shorter than the parent and
+are placed substantially to the right. The same applies to function headers
+with a long argument list. However, never break user-visible strings such as
+printk messages, because that breaks the ability to grep for them.
-void fun(int a, int b, int c)
-{
- if (condition)
- printk(KERN_WARNING "Warning this is a long printk with "
- "3 parameters a: %u b: %u "
- "c: %u \n", a, b, c);
- else
- next_statement;
-}
Chapter 3: Placing Braces and Spaces
@@ -175,8 +166,8 @@
else
do_that();
-This does not apply if one branch of a conditional statement is a single
-statement. Use braces in both branches.
+This does not apply if only one branch of a conditional statement is a single
+statement; in the latter case use braces in both branches:
if (condition) {
do_this();
diff --git a/Documentation/DMA-API-HOWTO.txt b/Documentation/DMA-API-HOWTO.txt
index d568bc2..a0b6250 100644
--- a/Documentation/DMA-API-HOWTO.txt
+++ b/Documentation/DMA-API-HOWTO.txt
@@ -613,13 +613,13 @@
pass_to_upper_layers(cp->rx_buf);
make_and_setup_new_rx_buf(cp);
} else {
- /* Just sync the buffer and give it back
- * to the card.
+ /* CPU should not write to
+ * DMA_FROM_DEVICE-mapped area,
+ * so dma_sync_single_for_device() is
+ * not needed here. It would be required
+ * for DMA_BIDIRECTIONAL mapping if
+ * the memory was modified.
*/
- dma_sync_single_for_device(&cp->dev,
- cp->rx_dma,
- cp->rx_len,
- DMA_FROM_DEVICE);
give_rx_buf_to_card(cp);
}
}
diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt
index fe23269..66bd97a 100644
--- a/Documentation/DMA-API.txt
+++ b/Documentation/DMA-API.txt
@@ -50,6 +50,13 @@
implementation may choose to ignore flags that affect the location of
the returned memory, like GFP_DMA).
+void *
+dma_zalloc_coherent(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t flag)
+
+Wraps dma_alloc_coherent() and also zeroes the returned memory if the
+allocation attempt succeeded.
+
void
dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
dma_addr_t dma_handle)
diff --git a/Documentation/DocBook/.gitignore b/Documentation/DocBook/.gitignore
index 679034c..720f245 100644
--- a/Documentation/DocBook/.gitignore
+++ b/Documentation/DocBook/.gitignore
@@ -8,4 +8,7 @@
*.dvi
*.log
*.out
-media/
+*.png
+*.gif
+media-indices.tmpl
+media-entities.tmpl
diff --git a/Documentation/DocBook/80211.tmpl b/Documentation/DocBook/80211.tmpl
index 445289c..2014155 100644
--- a/Documentation/DocBook/80211.tmpl
+++ b/Documentation/DocBook/80211.tmpl
@@ -433,8 +433,18 @@
Insert notes about VLAN interfaces with hw crypto here or
in the hw crypto chapter.
</para>
+ <section id="ps-client">
+ <title>support for powersaving clients</title>
+!Pinclude/net/mac80211.h AP support for powersaving clients
+ </section>
!Finclude/net/mac80211.h ieee80211_get_buffered_bc
!Finclude/net/mac80211.h ieee80211_beacon_get
+!Finclude/net/mac80211.h ieee80211_sta_eosp_irqsafe
+!Finclude/net/mac80211.h ieee80211_frame_release_type
+!Finclude/net/mac80211.h ieee80211_sta_ps_transition
+!Finclude/net/mac80211.h ieee80211_sta_ps_transition_ni
+!Finclude/net/mac80211.h ieee80211_sta_set_buffered
+!Finclude/net/mac80211.h ieee80211_sta_block_awake
</chapter>
<chapter id="multi-iface">
@@ -460,7 +470,6 @@
!Finclude/net/mac80211.h sta_notify_cmd
!Finclude/net/mac80211.h ieee80211_find_sta
!Finclude/net/mac80211.h ieee80211_find_sta_by_ifaddr
-!Finclude/net/mac80211.h ieee80211_sta_block_awake
</chapter>
<chapter id="hardware-scan-offload">
diff --git a/Documentation/DocBook/Makefile b/Documentation/DocBook/Makefile
index 3cebfa0..66725a3 100644
--- a/Documentation/DocBook/Makefile
+++ b/Documentation/DocBook/Makefile
@@ -14,7 +14,9 @@
genericirq.xml s390-drivers.xml uio-howto.xml scsi.xml \
80211.xml debugobjects.xml sh.xml regulator.xml \
alsa-driver-api.xml writing-an-alsa-driver.xml \
- tracepoint.xml media.xml drm.xml
+ tracepoint.xml drm.xml media_api.xml
+
+include $(srctree)/Documentation/DocBook/media/Makefile
###
# The build process is as follows (targets):
@@ -32,7 +34,7 @@
###
# The targets that may be used.
-PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs xmldoclinks
+PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs
BOOKS := $(addprefix $(obj)/,$(DOCBOOKS))
xmldocs: $(BOOKS)
@@ -45,27 +47,14 @@
pdfdocs: $(PDF)
HTML := $(sort $(patsubst %.xml, %.html, $(BOOKS)))
-htmldocs: $(HTML) xmldoclinks
+htmldocs: $(HTML)
$(call build_main_index)
$(call build_images)
+ $(call install_media_images)
MAN := $(patsubst %.xml, %.9, $(BOOKS))
mandocs: $(MAN)
-build_images = mkdir -p $(objtree)/Documentation/DocBook/media/ && \
- cp $(srctree)/Documentation/DocBook/dvb/*.png \
- $(srctree)/Documentation/DocBook/v4l/*.gif \
- $(objtree)/Documentation/DocBook/media/
-
-xmldoclinks:
-ifneq ($(objtree),$(srctree))
- for dep in dvb media-entities.tmpl media-indices.tmpl v4l; do \
- rm -f $(objtree)/Documentation/DocBook/$$dep \
- && ln -s $(srctree)/Documentation/DocBook/$$dep $(objtree)/Documentation/DocBook/ \
- || exit; \
- done
-endif
-
installmandocs: mandocs
mkdir -p /usr/local/man/man9/
install Documentation/DocBook/man/*.9.gz /usr/local/man/man9/
@@ -97,11 +86,11 @@
) > $(dir $@).$(notdir $@).cmd
endef
-%.xml: %.tmpl xmldoclinks FORCE
+%.xml: %.tmpl FORCE
$(call if_changed_rule,docproc)
###
-#Read in all saved dependency files
+#Read in all saved dependency files
cmd_files := $(wildcard $(foreach f,$(BOOKS),$(dir $(f)).$(notdir $(f)).cmd))
ifneq ($(cmd_files),)
@@ -150,7 +139,7 @@
index = index.html
main_idx = Documentation/DocBook/$(index)
-build_main_index = rm -rf $(main_idx) && \
+build_main_index = rm -rf $(main_idx); \
echo '<h1>Linux Kernel HTML Documentation</h1>' >> $(main_idx) && \
echo '<h2>Kernel Version: $(KERNELVERSION)</h2>' >> $(main_idx) && \
cat $(HTML) >> $(main_idx)
@@ -242,7 +231,7 @@
clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man
-cleandocs:
+cleandocs: cleanmediadocs
$(Q)rm -f $(call objectify, $(clean-files))
$(Q)rm -rf $(call objectify, $(clean-dirs))
diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl
index c279158..196b8b9 100644
--- a/Documentation/DocBook/drm.tmpl
+++ b/Documentation/DocBook/drm.tmpl
@@ -32,7 +32,7 @@
The Linux DRM layer contains code intended to support the needs
of complex graphics devices, usually containing programmable
pipelines well suited to 3D graphics acceleration. Graphics
- drivers in the kernel can make use of DRM functions to make
+ drivers in the kernel may make use of DRM functions to make
tasks like memory management, interrupt handling and DMA easier,
and provide a uniform interface to applications.
</para>
@@ -57,10 +57,10 @@
existing drivers.
</para>
<para>
- First, we'll go over some typical driver initialization
+ First, we go over some typical driver initialization
requirements, like setting up command buffers, creating an
initial output configuration, and initializing core services.
- Subsequent sections will cover core internals in more detail,
+ Subsequent sections cover core internals in more detail,
providing implementation notes and examples.
</para>
<para>
@@ -74,7 +74,7 @@
</para>
<para>
The core of every DRM driver is struct drm_driver. Drivers
- will typically statically initialize a drm_driver structure,
+ typically statically initialize a drm_driver structure,
then pass it to drm_init() at load time.
</para>
@@ -88,8 +88,8 @@
</para>
<programlisting>
static struct drm_driver driver = {
- /* don't use mtrr's here, the Xserver or user space app should
- * deal with them for intel hardware.
+ /* Don't use MTRRs here; the Xserver or userspace app should
+ * deal with them for Intel hardware.
*/
.driver_features =
DRIVER_USE_AGP | DRIVER_REQUIRE_AGP |
@@ -154,8 +154,8 @@
</programlisting>
<para>
In the example above, taken from the i915 DRM driver, the driver
- sets several flags indicating what core features it supports.
- We'll go over the individual callbacks in later sections. Since
+ sets several flags indicating what core features it supports;
+ we go over the individual callbacks in later sections. Since
flags indicate which features your driver supports to the DRM
core, you need to set most of them prior to calling drm_init(). Some,
like DRIVER_MODESET can be set later based on user supplied parameters,
@@ -203,8 +203,8 @@
<term>DRIVER_HAVE_IRQ</term><term>DRIVER_IRQ_SHARED</term>
<listitem>
<para>
- DRIVER_HAVE_IRQ indicates whether the driver has a IRQ
- handler, DRIVER_IRQ_SHARED indicates whether the device &
+ DRIVER_HAVE_IRQ indicates whether the driver has an IRQ
+ handler. DRIVER_IRQ_SHARED indicates whether the device &
handler support shared IRQs (note that this is required of
PCI drivers).
</para>
@@ -214,8 +214,8 @@
<term>DRIVER_DMA_QUEUE</term>
<listitem>
<para>
- If the driver queues DMA requests and completes them
- asynchronously, this flag should be set. Deprecated.
+ Should be set if the driver queues DMA requests and completes them
+ asynchronously. Deprecated.
</para>
</listitem>
</varlistentry>
@@ -238,7 +238,7 @@
</variablelist>
<para>
In this specific case, the driver requires AGP and supports
- IRQs. DMA, as we'll see, is handled by device specific ioctls
+ IRQs. DMA, as discussed later, is handled by device-specific ioctls
in this case. It also supports the kernel mode setting APIs, though
unlike in the actual i915 driver source, this example unconditionally
exports KMS capability.
@@ -269,36 +269,34 @@
initial output configuration.
</para>
<para>
- Note that the tasks performed at driver load time must not
- conflict with DRM client requirements. For instance, if user
+ If compatibility is a concern (e.g. with drivers converted over
+ to the new interfaces from the old ones), care must be taken to
+ prevent device initialization and control that is incompatible with
+ currently active userspace drivers. For instance, if user
level mode setting drivers are in use, it would be problematic
to perform output discovery & configuration at load time.
- Likewise, if pre-memory management aware user level drivers are
+ Likewise, if user-level drivers unaware of memory management are
in use, memory management and command buffer setup may need to
- be omitted. These requirements are driver specific, and care
+ be omitted. These requirements are driver-specific, and care
needs to be taken to keep both old and new applications and
libraries working. The i915 driver supports the "modeset"
module parameter to control whether advanced features are
- enabled at load time or in legacy fashion. If compatibility is
- a concern (e.g. with drivers converted over to the new interfaces
- from the old ones), care must be taken to prevent incompatible
- device initialization and control with the currently active
- userspace drivers.
+ enabled at load time or in legacy fashion.
</para>
<sect2>
<title>Driver private & performance counters</title>
<para>
The driver private hangs off the main drm_device structure and
- can be used for tracking various device specific bits of
+ can be used for tracking various device-specific bits of
information, like register offsets, command buffer status,
register state for suspend/resume, etc. At load time, a
- driver can simply allocate one and set drm_device.dev_priv
- appropriately; at unload the driver can free it and set
- drm_device.dev_priv to NULL.
+ driver may simply allocate one and set drm_device.dev_priv
+ appropriately; it should be freed and drm_device.dev_priv set
+ to NULL when the driver is unloaded.
</para>
<para>
- The DRM supports several counters which can be used for rough
+ The DRM supports several counters which may be used for rough
performance characterization. Note that the DRM stat counter
system is not often used by applications, and supporting
additional counters is completely optional.
@@ -307,15 +305,15 @@
These interfaces are deprecated and should not be used. If performance
monitoring is desired, the developer should investigate and
potentially enhance the kernel perf and tracing infrastructure to export
- GPU related performance information to performance monitoring
- tools and applications.
+ GPU related performance information for consumption by performance
+ monitoring tools and applications.
</para>
</sect2>
<sect2>
<title>Configuring the device</title>
<para>
- Obviously, device configuration will be device specific.
+ Obviously, device configuration is device-specific.
However, there are several common operations: finding a
device's PCI resources, mapping them, and potentially setting
up an IRQ handler.
@@ -323,10 +321,10 @@
<para>
Finding & mapping resources is fairly straightforward. The
DRM wrapper functions, drm_get_resource_start() and
- drm_get_resource_len() can be used to find BARs on the given
+ drm_get_resource_len(), may be used to find BARs on the given
drm_device struct. Once those values have been retrieved, the
driver load function can call drm_addmap() to create a new
- mapping for the BAR in question. Note you'll probably want a
+ mapping for the BAR in question. Note that you probably want a
drm_local_map_t in your driver private structure to track any
mappings you create.
<!-- !Fdrivers/gpu/drm/drm_bufs.c drm_get_resource_* -->
@@ -335,20 +333,20 @@
<para>
if compatibility with other operating systems isn't a concern
(DRM drivers can run under various BSD variants and OpenSolaris),
- native Linux calls can be used for the above, e.g. pci_resource_*
+ native Linux calls may be used for the above, e.g. pci_resource_*
and iomap*/iounmap. See the Linux device driver book for more
info.
</para>
<para>
- Once you have a register map, you can use the DRM_READn() and
+ Once you have a register map, you may use the DRM_READn() and
DRM_WRITEn() macros to access the registers on your device, or
- use driver specific versions to offset into your MMIO space
- relative to a driver specific base pointer (see I915_READ for
- example).
+ use driver-specific versions to offset into your MMIO space
+ relative to a driver-specific base pointer (see I915_READ for
+ an example).
</para>
<para>
If your device supports interrupt generation, you may want to
- setup an interrupt handler at driver load time as well. This
+ set up an interrupt handler when the driver is loaded. This
is done using the drm_irq_install() function. If your device
supports vertical blank interrupts, it should call
drm_vblank_init() to initialize the core vblank handling code before
@@ -357,7 +355,7 @@
</para>
<!--!Fdrivers/char/drm/drm_irq.c drm_irq_install-->
<para>
- Once your interrupt handler is registered (it'll use your
+ Once your interrupt handler is registered (it uses your
drm_driver.irq_handler as the actual interrupt handling
function), you can safely enable interrupts on your device,
assuming any other state your interrupt handler uses is also
@@ -371,10 +369,10 @@
using the pci_map_rom() call, a convenience function that
takes care of mapping the actual ROM, whether it has been
shadowed into memory (typically at address 0xc0000) or exists
- on the PCI device in the ROM BAR. Note that once you've
- mapped the ROM and extracted any necessary information, be
- sure to unmap it; on many devices the ROM address decoder is
- shared with other BARs, so leaving it mapped can cause
+ on the PCI device in the ROM BAR. Note that after the ROM
+ has been mapped and any necessary information has been extracted,
+ it should be unmapped; on many devices, the ROM address decoder is
+ shared with other BARs, so leaving it mapped could cause
undesired behavior like hangs or memory corruption.
<!--!Fdrivers/pci/rom.c pci_map_rom-->
</para>
@@ -389,9 +387,9 @@
should support a memory manager.
</para>
<para>
- If your driver supports memory management (it should!), you'll
+ If your driver supports memory management (it should!), you
need to set that up at load time as well. How you initialize
- it depends on which memory manager you're using, TTM or GEM.
+ it depends on which memory manager you're using: TTM or GEM.
</para>
<sect3>
<title>TTM initialization</title>
@@ -401,7 +399,7 @@
and devices with dedicated video RAM (VRAM), i.e. most discrete
graphics devices. If your device has dedicated RAM, supporting
TTM is desirable. TTM also integrates tightly with your
- driver specific buffer execution function. See the radeon
+ driver-specific buffer execution function. See the radeon
driver for examples.
</para>
<para>
@@ -429,21 +427,21 @@
created by the memory manager at runtime. Your global TTM should
have a type of TTM_GLOBAL_TTM_MEM. The size field for the global
object should be sizeof(struct ttm_mem_global), and the init and
- release hooks should point at your driver specific init and
- release routines, which will probably eventually call
- ttm_mem_global_init and ttm_mem_global_release respectively.
+ release hooks should point at your driver-specific init and
+ release routines, which probably eventually call
+ ttm_mem_global_init and ttm_mem_global_release, respectively.
</para>
<para>
Once your global TTM accounting structure is set up and initialized
- (done by calling ttm_global_item_ref on the global object you
- just created), you'll need to create a buffer object TTM to
+ by calling ttm_global_item_ref() on it,
+ you need to create a buffer object TTM to
provide a pool for buffer object allocation by clients and the
kernel itself. The type of this object should be TTM_GLOBAL_TTM_BO,
and its size should be sizeof(struct ttm_bo_global). Again,
- driver specific init and release functions can be provided,
- likely eventually calling ttm_bo_global_init and
- ttm_bo_global_release, respectively. Also like the previous
- object, ttm_global_item_ref is used to create an initial reference
+ driver-specific init and release functions may be provided,
+ likely eventually calling ttm_bo_global_init() and
+ ttm_bo_global_release(), respectively. Also, like the previous
+ object, ttm_global_item_ref() is used to create an initial reference
count for the TTM, which will call your initialization function.
</para>
</sect3>
@@ -453,27 +451,26 @@
GEM is an alternative to TTM, designed specifically for UMA
devices. It has simpler initialization and execution requirements
than TTM, but has no VRAM management capability. Core GEM
- initialization is comprised of a basic drm_mm_init call to create
+ is initialized by calling drm_mm_init() to create
a GTT DRM MM object, which provides an address space pool for
- object allocation. In a KMS configuration, the driver will
- need to allocate and initialize a command ring buffer following
- basic GEM initialization. Most UMA devices have a so-called
+ object allocation. In a KMS configuration, the driver
+ needs to allocate and initialize a command ring buffer following
+ core GEM initialization. A UMA device usually has what is called a
"stolen" memory region, which provides space for the initial
framebuffer and large, contiguous memory regions required by the
- device. This space is not typically managed by GEM, and must
+ device. This space is not typically managed by GEM, and it must
be initialized separately into its own DRM MM object.
</para>
<para>
- Initialization will be driver specific, and will depend on
- the architecture of the device. In the case of Intel
+ Initialization is driver-specific. In the case of Intel
integrated graphics chips like 965GM, GEM initialization can
be done by calling the internal GEM init function,
i915_gem_do_init(). Since the 965GM is a UMA device
- (i.e. it doesn't have dedicated VRAM), GEM will manage
+ (i.e. it doesn't have dedicated VRAM), GEM manages
making regular RAM available for GPU operations. Memory set
aside by the BIOS (called "stolen" memory by the i915
- driver) will be managed by the DRM memrange allocator; the
- rest of the aperture will be managed by GEM.
+ driver) is managed by the DRM memrange allocator; the
+ rest of the aperture is managed by GEM.
<programlisting>
/* Basic memrange allocator for stolen space (aka vram) */
drm_memrange_init(&dev_priv->vram, 0, prealloc_size);
@@ -483,7 +480,7 @@
<!--!Edrivers/char/drm/drm_memrange.c-->
</para>
<para>
- Once the memory manager has been set up, we can allocate the
+ Once the memory manager has been set up, we may allocate the
command buffer. In the i915 case, this is also done with a
GEM function, i915_gem_init_ringbuffer().
</para>
@@ -493,16 +490,25 @@
<sect2>
<title>Output configuration</title>
<para>
- The final initialization task is output configuration. This involves
- finding and initializing the CRTCs, encoders and connectors
- for your device, creating an initial configuration and
- registering a framebuffer console driver.
+ The final initialization task is output configuration. This involves:
+ <itemizedlist>
+ <listitem>
+ Finding and initializing the CRTCs, encoders, and connectors
+ for the device.
+ </listitem>
+ <listitem>
+ Creating an initial configuration.
+ </listitem>
+ <listitem>
+ Registering a framebuffer console driver.
+ </listitem>
+ </itemizedlist>
</para>
<sect3>
<title>Output discovery and initialization</title>
<para>
- Several core functions exist to create CRTCs, encoders and
- connectors, namely drm_crtc_init(), drm_connector_init() and
+ Several core functions exist to create CRTCs, encoders, and
+ connectors, namely: drm_crtc_init(), drm_connector_init(), and
drm_encoder_init(), along with several "helper" functions to
perform common tasks.
</para>
@@ -555,10 +561,10 @@
</programlisting>
<para>
In the example above (again, taken from the i915 driver), a
- CRT connector and encoder combination is created. A device
- specific i2c bus is also created, for fetching EDID data and
+ CRT connector and encoder combination is created. A device-specific
+ i2c bus is also created for fetching EDID data and
performing monitor detection. Once the process is complete,
- the new connector is registered with sysfs, to make its
+ the new connector is registered with sysfs to make its
properties available to applications.
</para>
<sect4>
@@ -567,12 +573,12 @@
Since many PC-class graphics devices have similar display output
designs, the DRM provides a set of helper functions to make
output management easier. The core helper routines handle
- encoder re-routing and disabling of unused functions following
- mode set. Using the helpers is optional, but recommended for
+ encoder re-routing and the disabling of unused functions following
+ mode setting. Using the helpers is optional, but recommended for
devices with PC-style architectures (i.e. a set of display planes
for feeding pixels to encoders which are in turn routed to
connectors). Devices with more complex requirements needing
- finer grained management can opt to use the core callbacks
+ finer grained management may opt to use the core callbacks
directly.
</para>
<para>
@@ -580,17 +586,25 @@
</para>
</sect4>
<para>
- For each encoder, CRTC and connector, several functions must
- be provided, depending on the object type. Encoder objects
- need to provide a DPMS (basically on/off) function, mode fixup
- (for converting requested modes into native hardware timings),
- and prepare, set and commit functions for use by the core DRM
- helper functions. Connector helpers need to provide mode fetch and
- validity functions as well as an encoder matching function for
- returning an ideal encoder for a given connector. The core
- connector functions include a DPMS callback, (deprecated)
- save/restore routines, detection, mode probing, property handling,
- and cleanup functions.
+ Each encoder object needs to provide:
+ <itemizedlist>
+ <listitem>
+ A DPMS (basically on/off) function.
+ </listitem>
+ <listitem>
+ A mode-fixup function (for converting requested modes into
+ native hardware timings).
+ </listitem>
+ <listitem>
+ Functions (prepare, set, and commit) for use by the core DRM
+ helper functions.
+ </listitem>
+ </itemizedlist>
+ Connector helpers need to provide functions (mode-fetch, validity,
+ and encoder-matching) for returning an ideal encoder for a given
+ connector. The core connector functions include a DPMS callback,
+ save/restore routines (deprecated), detection, mode probing,
+ property handling, and cleanup functions.
</para>
<!--!Edrivers/char/drm/drm_crtc.h-->
<!--!Edrivers/char/drm/drm_crtc.c-->
@@ -605,23 +619,34 @@
<title>VBlank event handling</title>
<para>
The DRM core exposes two vertical blank related ioctls:
- DRM_IOCTL_WAIT_VBLANK and DRM_IOCTL_MODESET_CTL.
+ <variablelist>
+ <varlistentry>
+ <term>DRM_IOCTL_WAIT_VBLANK</term>
+ <listitem>
+ <para>
+ This takes a struct drm_wait_vblank structure as its argument,
+ and it is used to block or request a signal when a specified
+ vblank event occurs.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_IOCTL_MODESET_CTL</term>
+ <listitem>
+ <para>
+ This should be called by application level drivers before and
+ after mode setting, since on many devices the vertical blank
+ counter is reset at that time. Internally, the DRM snapshots
+ the last vblank count when the ioctl is called with the
+ _DRM_PRE_MODESET command, so that the counter won't go backwards
+ (which is dealt with when _DRM_POST_MODESET is used).
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
<!--!Edrivers/char/drm/drm_irq.c-->
</para>
<para>
- DRM_IOCTL_WAIT_VBLANK takes a struct drm_wait_vblank structure
- as its argument, and is used to block or request a signal when a
- specified vblank event occurs.
- </para>
- <para>
- DRM_IOCTL_MODESET_CTL should be called by application level
- drivers before and after mode setting, since on many devices the
- vertical blank counter will be reset at that time. Internally,
- the DRM snapshots the last vblank count when the ioctl is called
- with the _DRM_PRE_MODESET command so that the counter won't go
- backwards (which is dealt with when _DRM_POST_MODESET is used).
- </para>
- <para>
To support the functions above, the DRM core provides several
helper functions for tracking vertical blank counters, and
requires drivers to provide several callbacks:
@@ -632,24 +657,24 @@
register. The enable and disable vblank callbacks should enable
and disable vertical blank interrupts, respectively. In the
absence of DRM clients waiting on vblank events, the core DRM
- code will use the disable_vblank() function to disable
- interrupts, which saves power. They'll be re-enabled again when
+ code uses the disable_vblank() function to disable
+ interrupts, which saves power. They are re-enabled again when
a client calls the vblank wait ioctl above.
</para>
<para>
- Devices that don't provide a count register can simply use an
+ A device that doesn't provide a count register may simply use an
internal atomic counter incremented on every vertical blank
- interrupt, and can make their enable and disable vblank
- functions into no-ops.
+ interrupt (and then treat the enable_vblank() and disable_vblank()
+ callbacks as no-ops).
</para>
</sect1>
<sect1>
<title>Memory management</title>
<para>
- The memory manager lies at the heart of many DRM operations, and
- is also required to support advanced client features like OpenGL
- pbuffers. The DRM currently contains two memory managers, TTM
+ The memory manager lies at the heart of many DRM operations; it
+ is required to support advanced client features like OpenGL
+ pbuffers. The DRM currently contains two memory managers: TTM
and GEM.
</para>
@@ -679,41 +704,46 @@
<para>
GEM-enabled drivers must provide gem_init_object() and
gem_free_object() callbacks to support the core memory
- allocation routines. They should also provide several driver
- specific ioctls to support command execution, pinning, buffer
+ allocation routines. They should also provide several driver-specific
+ ioctls to support command execution, pinning, buffer
read & write, mapping, and domain ownership transfers.
</para>
<para>
- On a fundamental level, GEM involves several operations: memory
- allocation and freeing, command execution, and aperture management
- at command execution time. Buffer object allocation is relatively
+ On a fundamental level, GEM involves several operations:
+ <itemizedlist>
+ <listitem>Memory allocation and freeing</listitem>
+ <listitem>Command execution</listitem>
+ <listitem>Aperture management at command execution time</listitem>
+ </itemizedlist>
+ Buffer object allocation is relatively
straightforward and largely provided by Linux's shmem layer, which
provides memory to back each object. When mapped into the GTT
or used in a command buffer, the backing pages for an object are
flushed to memory and marked write combined so as to be coherent
- with the GPU. Likewise, when the GPU finishes rendering to an object,
- if the CPU accesses it, it must be made coherent with the CPU's view
+ with the GPU. Likewise, if the CPU accesses an object after the GPU
+ has finished rendering to the object, then the object must be made
+ coherent with the CPU's view
of memory, usually involving GPU cache flushing of various kinds.
- This core CPU<->GPU coherency management is provided by the GEM
- set domain function, which evaluates an object's current domain and
+ This core CPU<->GPU coherency management is provided by a
+ device-specific ioctl, which evaluates an object's current domain and
performs any necessary flushing or synchronization to put the object
into the desired coherency domain (note that the object may be busy,
- i.e. an active render target; in that case the set domain function
- will block the client and wait for rendering to complete before
+ i.e. an active render target; in that case, setting the domain
+ blocks the client and waits for rendering to complete before
performing any necessary flushing operations).
</para>
<para>
Perhaps the most important GEM function is providing a command
execution interface to clients. Client programs construct command
- buffers containing references to previously allocated memory objects
- and submit them to GEM. At that point, GEM will take care to bind
+ buffers containing references to previously allocated memory objects,
+ and then submit them to GEM. At that point, GEM takes care to bind
all the objects into the GTT, execute the buffer, and provide
necessary synchronization between clients accessing the same buffers.
This often involves evicting some objects from the GTT and re-binding
others (a fairly expensive operation), and providing relocation
support which hides fixed GTT offsets from clients. Clients must
take care not to submit command buffers that reference more objects
- than can fit in the GTT or GEM will reject them and no rendering
+ than can fit in the GTT; otherwise, GEM will reject them and no rendering
will occur. Similarly, if several objects in the buffer require
fence registers to be allocated for correct rendering (e.g. 2D blits
on pre-965 chips), care must be taken not to require more fence
@@ -729,7 +759,7 @@
<title>Output management</title>
<para>
At the core of the DRM output management code is a set of
- structures representing CRTCs, encoders and connectors.
+ structures representing CRTCs, encoders, and connectors.
</para>
<para>
A CRTC is an abstraction representing a part of the chip that
@@ -765,21 +795,19 @@
<sect1>
<title>Framebuffer management</title>
<para>
- In order to set a mode on a given CRTC, encoder and connector
- configuration, clients need to provide a framebuffer object which
- will provide a source of pixels for the CRTC to deliver to the encoder(s)
- and ultimately the connector(s) in the configuration. A framebuffer
- is fundamentally a driver specific memory object, made into an opaque
- handle by the DRM addfb function. Once an fb has been created this
- way it can be passed to the KMS mode setting routines for use in
- a configuration.
+ Clients need to provide a framebuffer object which provides a source
+ of pixels for a CRTC to deliver to the encoder(s) and ultimately the
+ connector(s). A framebuffer is fundamentally a driver-specific memory
+ object, made into an opaque handle by the DRM's addfb() function.
+ Once a framebuffer has been created this way, it may be passed to the
+ KMS mode setting routines for use in a completed configuration.
</para>
</sect1>
<sect1>
<title>Command submission & fencing</title>
<para>
- This should cover a few device specific command submission
+ This should cover a few device-specific command submission
implementations.
</para>
</sect1>
@@ -789,7 +817,7 @@
<para>
The DRM core provides some suspend/resume code, but drivers
wanting full suspend/resume support should provide save() and
- restore() functions. These will be called at suspend,
+ restore() functions. These are called at suspend,
hibernate, or resume time, and should perform any state save or
restore required by your device across suspend or hibernate
states.
@@ -812,8 +840,8 @@
<para>
The DRM core exports several interfaces to applications,
generally intended to be used through corresponding libdrm
- wrapper functions. In addition, drivers export device specific
- interfaces for use by userspace drivers & device aware
+ wrapper functions. In addition, drivers export device-specific
+ interfaces for use by userspace drivers & device-aware
applications through ioctls and sysfs files.
</para>
<para>
@@ -822,8 +850,8 @@
management, memory management, and output management.
</para>
<para>
- Cover generic ioctls and sysfs layout here. Only need high
- level info, since man pages will cover the rest.
+ Cover generic ioctls and sysfs layout here. We only need high-level
+ info, since man pages should cover the rest.
</para>
</chapter>
diff --git a/Documentation/DocBook/dvb/audio.xml b/Documentation/DocBook/dvb/audio.xml
deleted file mode 100644
index eeb96b8..0000000
--- a/Documentation/DocBook/dvb/audio.xml
+++ /dev/null
@@ -1,1473 +0,0 @@
-<title>DVB Audio Device</title>
-<para>The DVB audio device controls the MPEG2 audio decoder of the DVB hardware. It
-can be accessed through <emphasis role="tt">/dev/dvb/adapter0/audio0</emphasis>. Data types and and
-ioctl definitions can be accessed by including <emphasis role="tt">linux/dvb/video.h</emphasis> in your
-application.
-</para>
-<para>Please note that some DVB cards don’t have their own MPEG decoder, which results in
-the omission of the audio and video device.
-</para>
-
-<section id="audio_data_types">
-<title>Audio Data Types</title>
-<para>This section describes the structures, data types and defines used when talking to the
-audio device.
-</para>
-
-<section id="audio_stream_source_t">
-<title>audio_stream_source_t</title>
-<para>The audio stream source is set through the AUDIO_SELECT_SOURCE call and can take
-the following values, depending on whether we are replaying from an internal (demux) or
-external (user write) source.
-</para>
-<programlisting>
- typedef enum {
- AUDIO_SOURCE_DEMUX,
- AUDIO_SOURCE_MEMORY
- } audio_stream_source_t;
-</programlisting>
-<para>AUDIO_SOURCE_DEMUX selects the demultiplexer (fed either by the frontend or the
-DVR device) as the source of the video stream. If AUDIO_SOURCE_MEMORY
-is selected the stream comes from the application through the <emphasis role="tt">write()</emphasis> system
-call.
-</para>
-
-</section>
-<section id="audio_play_state_t">
-<title>audio_play_state_t</title>
-<para>The following values can be returned by the AUDIO_GET_STATUS call representing the
-state of audio playback.
-</para>
-<programlisting>
- typedef enum {
- AUDIO_STOPPED,
- AUDIO_PLAYING,
- AUDIO_PAUSED
- } audio_play_state_t;
-</programlisting>
-
-</section>
-<section id="audio_channel_select_t">
-<title>audio_channel_select_t</title>
-<para>The audio channel selected via AUDIO_CHANNEL_SELECT is determined by the
-following values.
-</para>
-<programlisting>
- typedef enum {
- AUDIO_STEREO,
- AUDIO_MONO_LEFT,
- AUDIO_MONO_RIGHT,
- } audio_channel_select_t;
-</programlisting>
-
-</section>
-<section id="struct_audio_status">
-<title>struct audio_status</title>
-<para>The AUDIO_GET_STATUS call returns the following structure informing about various
-states of the playback operation.
-</para>
-<programlisting>
- typedef struct audio_status {
- boolean AV_sync_state;
- boolean mute_state;
- audio_play_state_t play_state;
- audio_stream_source_t stream_source;
- audio_channel_select_t channel_select;
- boolean bypass_mode;
- } audio_status_t;
-</programlisting>
-
-</section>
-<section id="struct_audio_mixer">
-<title>struct audio_mixer</title>
-<para>The following structure is used by the AUDIO_SET_MIXER call to set the audio
-volume.
-</para>
-<programlisting>
- typedef struct audio_mixer {
- unsigned int volume_left;
- unsigned int volume_right;
- } audio_mixer_t;
-</programlisting>
-
-</section>
-<section id="audio_encodings">
-<title>audio encodings</title>
-<para>A call to AUDIO_GET_CAPABILITIES returns an unsigned integer with the following
-bits set according to the hardwares capabilities.
-</para>
-<programlisting>
- #define AUDIO_CAP_DTS 1
- #define AUDIO_CAP_LPCM 2
- #define AUDIO_CAP_MP1 4
- #define AUDIO_CAP_MP2 8
- #define AUDIO_CAP_MP3 16
- #define AUDIO_CAP_AAC 32
- #define AUDIO_CAP_OGG 64
- #define AUDIO_CAP_SDDS 128
- #define AUDIO_CAP_AC3 256
-</programlisting>
-
-</section>
-<section id="struct_audio_karaoke">
-<title>struct audio_karaoke</title>
-<para>The ioctl AUDIO_SET_KARAOKE uses the following format:
-</para>
-<programlisting>
- typedef
- struct audio_karaoke{
- int vocal1;
- int vocal2;
- int melody;
- } audio_karaoke_t;
-</programlisting>
-<para>If Vocal1 or Vocal2 are non-zero, they get mixed into left and right t at 70% each. If both,
-Vocal1 and Vocal2 are non-zero, Vocal1 gets mixed into the left channel and Vocal2 into the
-right channel at 100% each. Ff Melody is non-zero, the melody channel gets mixed into left
-and right.
-</para>
-
-</section>
-<section id="audio_attributes">
-<title>audio attributes</title>
-<para>The following attributes can be set by a call to AUDIO_SET_ATTRIBUTES:
-</para>
-<programlisting>
- typedef uint16_t audio_attributes_t;
- /⋆ bits: descr. ⋆/
- /⋆ 15-13 audio coding mode (0=ac3, 2=mpeg1, 3=mpeg2ext, 4=LPCM, 6=DTS, ⋆/
- /⋆ 12 multichannel extension ⋆/
- /⋆ 11-10 audio type (0=not spec, 1=language included) ⋆/
- /⋆ 9- 8 audio application mode (0=not spec, 1=karaoke, 2=surround) ⋆/
- /⋆ 7- 6 Quantization / DRC (mpeg audio: 1=DRC exists)(lpcm: 0=16bit, ⋆/
- /⋆ 5- 4 Sample frequency fs (0=48kHz, 1=96kHz) ⋆/
- /⋆ 2- 0 number of audio channels (n+1 channels) ⋆/
-</programlisting>
- </section></section>
-<section id="audio_function_calls">
-<title>Audio Function Calls</title>
-
-
-<section id="audio_fopen">
-<title>open()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call opens a named audio device (e.g. /dev/dvb/adapter0/audio0)
- for subsequent use. When an open() call has succeeded, the device will be ready
- for use. The significance of blocking or non-blocking mode is described in the
- documentation for functions where there is a difference. It does not affect the
- semantics of the open() call itself. A device opened in blocking mode can later
- be put into non-blocking mode (and vice versa) using the F_SETFL command
- of the fcntl system call. This is a standard system call, documented in the Linux
- manual page for fcntl. Only one user can open the Audio Device in O_RDWR
- mode. All other attempts to open the device in this mode will fail, and an error
- code will be returned. If the Audio Device is opened in O_RDONLY mode, the
- only ioctl call that can be used is AUDIO_GET_STATUS. All other call will
- return with an error code.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int open(const char ⋆deviceName, int flags);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>const char
- *deviceName</para>
-</entry><entry
- align="char">
-<para>Name of specific audio device.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int flags</para>
-</entry><entry
- align="char">
-<para>A bit-wise OR of the following flags:</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_RDONLY read-only access</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_RDWR read/write access</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_NONBLOCK open in non-blocking mode</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>(blocking mode is the default)</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>ENODEV</para>
-</entry><entry
- align="char">
-<para>Device driver not loaded/available.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBUSY</para>
-</entry><entry
- align="char">
-<para>Device or resource busy.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid argument.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section>
-<section id="audio_fclose">
-<title>close()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call closes a previously opened audio device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int close(int fd);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section>
-<section id="audio_fwrite">
-<title>write()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call can only be used if AUDIO_SOURCE_MEMORY is selected
- in the ioctl call AUDIO_SELECT_SOURCE. The data provided shall be in
- PES format. If O_NONBLOCK is not specified the function will block until
- buffer space is available. The amount of data to be transferred is implied by
- count.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>size_t write(int fd, const void ⋆buf, size_t count);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>void *buf</para>
-</entry><entry
- align="char">
-<para>Pointer to the buffer containing the PES data.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>size_t count</para>
-</entry><entry
- align="char">
-<para>Size of buf.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EPERM</para>
-</entry><entry
- align="char">
-<para>Mode AUDIO_SOURCE_MEMORY not selected.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>ENOMEM</para>
-</entry><entry
- align="char">
-<para>Attempted to write more data than the internal buffer can
- hold.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_STOP</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Audio Device to stop playing the current stream.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = AUDIO_STOP);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_STOP for this command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_PLAY</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Audio Device to start playing an audio stream from the
- selected source.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = AUDIO_PLAY);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_PLAY for this command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_PAUSE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call suspends the audio stream being played. Decoding and playing
- are paused. It is then possible to restart again decoding and playing process of
- the audio stream using AUDIO_CONTINUE command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>If AUDIO_SOURCE_MEMORY is selected in the ioctl call
- AUDIO_SELECT_SOURCE, the DVB-subsystem will not decode (consume)
- any more data until the ioctl call AUDIO_CONTINUE or AUDIO_PLAY is
- performed.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = AUDIO_PAUSE);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_PAUSE for this command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_SELECT_SOURCE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call informs the audio device which source shall be used
- for the input data. The possible sources are demux or memory. If
- AUDIO_SOURCE_MEMORY is selected, the data is fed to the Audio Device
- through the write command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = AUDIO_SELECT_SOURCE,
- audio_stream_source_t source);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_SELECT_SOURCE for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>audio_stream_source_t
- source</para>
-</entry><entry
- align="char">
-<para>Indicates the source that shall be used for the Audio
- stream.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Illegal input parameter.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_SET_MUTE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the audio device to mute the stream that is currently being
- played.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = AUDIO_SET_MUTE,
- boolean state);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_SET_MUTE for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>boolean state</para>
-</entry><entry
- align="char">
-<para>Indicates if audio device shall mute or not.</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>TRUE Audio Mute</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>FALSE Audio Un-mute</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Illegal input parameter.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_SET_AV_SYNC</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Audio Device to turn ON or OFF A/V synchronization.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = AUDIO_SET_AV_SYNC,
- boolean state);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_AV_SYNC for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>boolean state</para>
-</entry><entry
- align="char">
-<para>Tells the DVB subsystem if A/V synchronization shall be
- ON or OFF.</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>TRUE AV-sync ON</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>FALSE AV-sync OFF</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Illegal input parameter.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_SET_BYPASS_MODE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Audio Device to bypass the Audio decoder and forward
- the stream without decoding. This mode shall be used if streams that can’t be
- handled by the DVB system shall be decoded. Dolby DigitalTM streams are
- automatically forwarded by the DVB subsystem if the hardware can handle it.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request =
- AUDIO_SET_BYPASS_MODE, boolean mode);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_SET_BYPASS_MODE for this
- command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>boolean mode</para>
-</entry><entry
- align="char">
-<para>Enables or disables the decoding of the current Audio
- stream in the DVB subsystem.</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>TRUE Bypass is disabled</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>FALSE Bypass is enabled</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Illegal input parameter.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_CHANNEL_SELECT</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Audio Device to select the requested channel if possible.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request =
- AUDIO_CHANNEL_SELECT, audio_channel_select_t);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_CHANNEL_SELECT for this
- command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>audio_channel_select_t
- ch</para>
-</entry><entry
- align="char">
-<para>Select the output format of the audio (mono left/right,
- stereo).</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Illegal input parameter ch.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_GET_STATUS</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Audio Device to return the current state of the Audio
- Device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = AUDIO_GET_STATUS,
- struct audio_status ⋆status);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_GET_STATUS for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct audio_status
- *status</para>
-</entry><entry
- align="char">
-<para>Returns the current state of Audio Device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>status points to invalid address.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_GET_CAPABILITIES</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Audio Device to tell us about the decoding capabilities
- of the audio hardware.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request =
- AUDIO_GET_CAPABILITIES, unsigned int ⋆cap);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_GET_CAPABILITIES for this
- command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>unsigned int *cap</para>
-</entry><entry
- align="char">
-<para>Returns a bit array of supported sound formats.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>cap points to an invalid address.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_CLEAR_BUFFER</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Audio Device to clear all software and hardware buffers
- of the audio decoder device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = AUDIO_CLEAR_BUFFER);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_CLEAR_BUFFER for this command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_SET_ID</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl selects which sub-stream is to be decoded if a program or system
- stream is sent to the video device. If no audio stream type is set the id has to be
- in [0xC0,0xDF] for MPEG sound, in [0x80,0x87] for AC3 and in [0xA0,0xA7]
- for LPCM. More specifications may follow for other stream types. If the stream
- type is set the id just specifies the substream id of the audio stream and only
- the first 5 bits are recognized.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = AUDIO_SET_ID, int
- id);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_SET_ID for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int id</para>
-</entry><entry
- align="char">
-<para>audio sub-stream id</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid sub-stream id.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_SET_MIXER</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl lets you adjust the mixer settings of the audio decoder.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = AUDIO_SET_MIXER,
- audio_mixer_t ⋆mix);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_SET_ID for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>audio_mixer_t *mix</para>
-</entry><entry
- align="char">
-<para>mixer settings.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>mix points to an invalid address.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_SET_STREAMTYPE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl tells the driver which kind of audio stream to expect. This is useful
- if the stream offers several audio sub-streams like LPCM and AC3.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = AUDIO_SET_STREAMTYPE,
- int type);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_SET_STREAMTYPE for this
- command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int type</para>
-</entry><entry
- align="char">
-<para>stream type</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>type is not a valid or supported stream type.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_SET_EXT_ID</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl can be used to set the extension id for MPEG streams in DVD
- playback. Only the first 3 bits are recognized.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = AUDIO_SET_EXT_ID, int
- id);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_SET_EXT_ID for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int id</para>
-</entry><entry
- align="char">
-<para>audio sub_stream_id</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>id is not a valid id.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_SET_ATTRIBUTES</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl is intended for DVD playback and allows you to set certain
- information about the audio stream.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = AUDIO_SET_ATTRIBUTES,
- audio_attributes_t attr );</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_SET_ATTRIBUTES for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>audio_attributes_t
- attr</para>
-</entry><entry
- align="char">
-<para>audio attributes according to section ??</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>attr is not a valid or supported attribute setting.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>AUDIO_SET_KARAOKE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl allows one to set the mixer settings for a karaoke DVD.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = AUDIO_SET_STREAMTYPE,
- audio_karaoke_t ⋆karaoke);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals AUDIO_SET_STREAMTYPE for this
- command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>audio_karaoke_t
- *karaoke</para>
-</entry><entry
- align="char">
-<para>karaoke settings according to section ??.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>karaoke is not a valid or supported karaoke setting.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
- </section>
-</section>
diff --git a/Documentation/DocBook/dvb/ca.xml b/Documentation/DocBook/dvb/ca.xml
deleted file mode 100644
index b1f1d2f..0000000
--- a/Documentation/DocBook/dvb/ca.xml
+++ /dev/null
@@ -1,221 +0,0 @@
-<title>DVB CA Device</title>
-<para>The DVB CA device controls the conditional access hardware. It can be accessed through
-<emphasis role="tt">/dev/dvb/adapter0/ca0</emphasis>. Data types and and ioctl definitions can be accessed by
-including <emphasis role="tt">linux/dvb/ca.h</emphasis> in your application.
-</para>
-
-<section id="ca_data_types">
-<title>CA Data Types</title>
-
-
-<section id="ca_slot_info_t">
-<title>ca_slot_info_t</title>
- <programlisting>
- /⋆ slot interface types and info ⋆/
-
- typedef struct ca_slot_info_s {
- int num; /⋆ slot number ⋆/
-
- int type; /⋆ CA interface this slot supports ⋆/
- #define CA_CI 1 /⋆ CI high level interface ⋆/
- #define CA_CI_LINK 2 /⋆ CI link layer level interface ⋆/
- #define CA_CI_PHYS 4 /⋆ CI physical layer level interface ⋆/
- #define CA_SC 128 /⋆ simple smart card interface ⋆/
-
- unsigned int flags;
- #define CA_CI_MODULE_PRESENT 1 /⋆ module (or card) inserted ⋆/
- #define CA_CI_MODULE_READY 2
- } ca_slot_info_t;
-</programlisting>
-
-</section>
-<section id="ca_descr_info_t">
-<title>ca_descr_info_t</title>
- <programlisting>
- typedef struct ca_descr_info_s {
- unsigned int num; /⋆ number of available descramblers (keys) ⋆/
- unsigned int type; /⋆ type of supported scrambling system ⋆/
- #define CA_ECD 1
- #define CA_NDS 2
- #define CA_DSS 4
- } ca_descr_info_t;
-</programlisting>
-
-</section>
-<section id="ca_cap_t">
-<title>ca_cap_t</title>
- <programlisting>
- typedef struct ca_cap_s {
- unsigned int slot_num; /⋆ total number of CA card and module slots ⋆/
- unsigned int slot_type; /⋆ OR of all supported types ⋆/
- unsigned int descr_num; /⋆ total number of descrambler slots (keys) ⋆/
- unsigned int descr_type;/⋆ OR of all supported types ⋆/
- } ca_cap_t;
-</programlisting>
-
-</section>
-<section id="ca_msg_t">
-<title>ca_msg_t</title>
- <programlisting>
- /⋆ a message to/from a CI-CAM ⋆/
- typedef struct ca_msg_s {
- unsigned int index;
- unsigned int type;
- unsigned int length;
- unsigned char msg[256];
- } ca_msg_t;
-</programlisting>
-
-</section>
-<section id="ca_descr_t">
-<title>ca_descr_t</title>
- <programlisting>
- typedef struct ca_descr_s {
- unsigned int index;
- unsigned int parity;
- unsigned char cw[8];
- } ca_descr_t;
-</programlisting>
- </section></section>
-<section id="ca_function_calls">
-<title>CA Function Calls</title>
-
-
-<section id="ca_fopen">
-<title>open()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call opens a named ca device (e.g. /dev/ost/ca) for subsequent use.</para>
-<para>When an open() call has succeeded, the device will be ready for use.
- The significance of blocking or non-blocking mode is described in the
- documentation for functions where there is a difference. It does not affect the
- semantics of the open() call itself. A device opened in blocking mode can later
- be put into non-blocking mode (and vice versa) using the F_SETFL command
- of the fcntl system call. This is a standard system call, documented in the Linux
- manual page for fcntl. Only one user can open the CA Device in O_RDWR
- mode. All other attempts to open the device in this mode will fail, and an error
- code will be returned.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int open(const char ⋆deviceName, int flags);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>const char
- *deviceName</para>
-</entry><entry
- align="char">
-<para>Name of specific video device.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int flags</para>
-</entry><entry
- align="char">
-<para>A bit-wise OR of the following flags:</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_RDONLY read-only access</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_RDWR read/write access</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_NONBLOCK open in non-blocking mode</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>(blocking mode is the default)</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>ENODEV</para>
-</entry><entry
- align="char">
-<para>Device driver not loaded/available.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBUSY</para>
-</entry><entry
- align="char">
-<para>Device or resource busy.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid argument.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section>
-<section id="ca_fclose">
-<title>close()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call closes a previously opened audio device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int close(int fd);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
- </section>
-</section>
diff --git a/Documentation/DocBook/dvb/demux.xml b/Documentation/DocBook/dvb/demux.xml
deleted file mode 100644
index 1b8c4e9..0000000
--- a/Documentation/DocBook/dvb/demux.xml
+++ /dev/null
@@ -1,973 +0,0 @@
-<title>DVB Demux Device</title>
-
-<para>The DVB demux device controls the filters of the DVB hardware/software. It can be
-accessed through <emphasis role="tt">/dev/adapter0/demux0</emphasis>. Data types and and ioctl definitions can be
-accessed by including <emphasis role="tt">linux/dvb/dmx.h</emphasis> in your application.
-</para>
-<section id="dmx_types">
-<title>Demux Data Types</title>
-
-<section id="dmx_output_t">
-<title>dmx_output_t</title>
- <programlisting>
- typedef enum
- {
- DMX_OUT_DECODER,
- DMX_OUT_TAP,
- DMX_OUT_TS_TAP
- } dmx_output_t;
-</programlisting>
-<para><emphasis role="tt">DMX_OUT_TAP</emphasis> delivers the stream output to the demux device on which the ioctl is
-called.
-</para>
-<para><emphasis role="tt">DMX_OUT_TS_TAP</emphasis> routes output to the logical DVR device <emphasis role="tt">/dev/dvb/adapter0/dvr0</emphasis>,
-which delivers a TS multiplexed from all filters for which <emphasis role="tt">DMX_OUT_TS_TAP</emphasis> was
-specified.
-</para>
-</section>
-
-<section id="dmx_input_t">
-<title>dmx_input_t</title>
- <programlisting>
- typedef enum
- {
- DMX_IN_FRONTEND,
- DMX_IN_DVR
- } dmx_input_t;
-</programlisting>
-</section>
-
-<section id="dmx_pes_type_t">
-<title>dmx_pes_type_t</title>
- <programlisting>
- typedef enum
- {
- DMX_PES_AUDIO,
- DMX_PES_VIDEO,
- DMX_PES_TELETEXT,
- DMX_PES_SUBTITLE,
- DMX_PES_PCR,
- DMX_PES_OTHER
- } dmx_pes_type_t;
-</programlisting>
-</section>
-
-<section id="dmx_event_t">
-<title>dmx_event_t</title>
- <programlisting>
- typedef enum
- {
- DMX_SCRAMBLING_EV,
- DMX_FRONTEND_EV
- } dmx_event_t;
-</programlisting>
-</section>
-
-<section id="dmx_scrambling_status_t">
-<title>dmx_scrambling_status_t</title>
- <programlisting>
- typedef enum
- {
- DMX_SCRAMBLING_OFF,
- DMX_SCRAMBLING_ON
- } dmx_scrambling_status_t;
-</programlisting>
-</section>
-
-<section id="dmx_filter">
-<title>struct dmx_filter</title>
- <programlisting>
- typedef struct dmx_filter
- {
- uint8_t filter[DMX_FILTER_SIZE];
- uint8_t mask[DMX_FILTER_SIZE];
- } dmx_filter_t;
-</programlisting>
-</section>
-
-<section id="dmx_sct_filter_params">
-<title>struct dmx_sct_filter_params</title>
- <programlisting>
- struct dmx_sct_filter_params
- {
- uint16_t pid;
- dmx_filter_t filter;
- uint32_t timeout;
- uint32_t flags;
- #define DMX_CHECK_CRC 1
- #define DMX_ONESHOT 2
- #define DMX_IMMEDIATE_START 4
- };
-</programlisting>
-</section>
-
-<section id="dmx_pes_filter_params">
-<title>struct dmx_pes_filter_params</title>
- <programlisting>
- struct dmx_pes_filter_params
- {
- uint16_t pid;
- dmx_input_t input;
- dmx_output_t output;
- dmx_pes_type_t pes_type;
- uint32_t flags;
- };
-</programlisting>
-</section>
-
-<section id="dmx_event">
-<title>struct dmx_event</title>
- <programlisting>
- struct dmx_event
- {
- dmx_event_t event;
- time_t timeStamp;
- union
- {
- dmx_scrambling_status_t scrambling;
- } u;
- };
-</programlisting>
-</section>
-
-<section id="dmx_stc">
-<title>struct dmx_stc</title>
- <programlisting>
- struct dmx_stc {
- unsigned int num; /⋆ input : which STC? 0..N ⋆/
- unsigned int base; /⋆ output: divisor for stc to get 90 kHz clock ⋆/
- uint64_t stc; /⋆ output: stc in 'base'⋆90 kHz units ⋆/
- };
-</programlisting>
- </section>
-
-</section>
-
-<section id="dmx_fcalls">
-<title>Demux Function Calls</title>
-
-<section id="dmx_fopen">
-<title>open()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call, used with a device name of /dev/dvb/adapter0/demux0,
- allocates a new filter and returns a handle which can be used for subsequent
- control of that filter. This call has to be made for each filter to be used, i.e. every
- returned file descriptor is a reference to a single filter. /dev/dvb/adapter0/dvr0
- is a logical device to be used for retrieving Transport Streams for digital
- video recording. When reading from this device a transport stream containing
- the packets from all PES filters set in the corresponding demux device
- (/dev/dvb/adapter0/demux0) having the output set to DMX_OUT_TS_TAP. A
- recorded Transport Stream is replayed by writing to this device. </para>
-<para>The significance of blocking or non-blocking mode is described in the
- documentation for functions where there is a difference. It does not affect the
- semantics of the open() call itself. A device opened in blocking mode can later
- be put into non-blocking mode (and vice versa) using the F_SETFL command
- of the fcntl system call.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int open(const char ⋆deviceName, int flags);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>const char
- *deviceName</para>
-</entry><entry
- align="char">
-<para>Name of demux device.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int flags</para>
-</entry><entry
- align="char">
-<para>A bit-wise OR of the following flags:</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_RDWR read/write access</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_NONBLOCK open in non-blocking mode</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>(blocking mode is the default)</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>ENODEV</para>
-</entry><entry
- align="char">
-<para>Device driver not loaded/available.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid argument.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EMFILE</para>
-</entry><entry
- align="char">
-<para>“Too many open files”, i.e. no more filters available.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>ENOMEM</para>
-</entry><entry
- align="char">
-<para>The driver failed to allocate enough memory.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="dmx_fclose">
-<title>close()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call deactivates and deallocates a filter that was previously
- allocated via the open() call.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int close(int fd);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="dmx_fread">
-<title>read()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call returns filtered data, which might be section or PES data. The
- filtered data is transferred from the driver’s internal circular buffer to buf. The
- maximum amount of data to be transferred is implied by count.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>When returning section data the driver always tries to return a complete single
- section (even though buf would provide buffer space for more data). If the size
- of the buffer is smaller than the section as much as possible will be returned,
- and the remaining data will be provided in subsequent calls.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>The size of the internal buffer is 2 * 4096 bytes (the size of two maximum
- sized sections) by default. The size of this buffer may be changed by using the
- DMX_SET_BUFFER_SIZE function. If the buffer is not large enough, or if
- the read operations are not performed fast enough, this may result in a buffer
- overflow error. In this case EOVERFLOW will be returned, and the circular
- buffer will be emptied. This call is blocking if there is no data to return, i.e. the
- process will be put to sleep waiting for data, unless the O_NONBLOCK flag
- is specified.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>Note that in order to be able to read, the filtering process has to be started
- by defining either a section or a PES filter by means of the ioctl functions,
- and then starting the filtering process via the DMX_START ioctl function
- or by setting the DMX_IMMEDIATE_START flag. If the reading is done
- from a logical DVR demux device, the data will constitute a Transport Stream
- including the packets from all PES filters in the corresponding demux device
- /dev/dvb/adapter0/demux0 having the output set to DMX_OUT_TS_TAP.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>size_t read(int fd, void ⋆buf, size_t count);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>void *buf</para>
-</entry><entry
- align="char">
-<para>Pointer to the buffer to be used for returned filtered data.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>size_t count</para>
-</entry><entry
- align="char">
-<para>Size of buf.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EWOULDBLOCK</para>
-</entry><entry
- align="char">
-<para>No data to return and O_NONBLOCK was specified.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>ECRC</para>
-</entry><entry
- align="char">
-<para>Last section had a CRC error - no data returned. The
- buffer is flushed.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EOVERFLOW</para>
-</entry><entry
- align="char">
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>The filtered data was not read from the buffer in due
- time, resulting in non-read data being lost. The buffer is
- flushed.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>ETIMEDOUT</para>
-</entry><entry
- align="char">
-<para>The section was not loaded within the stated timeout
- period. See ioctl DMX_SET_FILTER for how to set a
- timeout.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>The driver failed to write to the callers buffer due to an
- invalid *buf pointer.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="dmx_fwrite">
-<title>write()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call is only provided by the logical device /dev/dvb/adapter0/dvr0,
- associated with the physical demux device that provides the actual DVR
- functionality. It is used for replay of a digitally recorded Transport Stream.
- Matching filters have to be defined in the corresponding physical demux
- device, /dev/dvb/adapter0/demux0. The amount of data to be transferred is
- implied by count.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>ssize_t write(int fd, const void ⋆buf, size_t
- count);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>void *buf</para>
-</entry><entry
- align="char">
-<para>Pointer to the buffer containing the Transport Stream.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>size_t count</para>
-</entry><entry
- align="char">
-<para>Size of buf.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EWOULDBLOCK</para>
-</entry><entry
- align="char">
-<para>No data was written. This
- might happen if O_NONBLOCK was specified and there
- is no more buffer space available (if O_NONBLOCK is
- not specified the function will block until buffer space is
- available).</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBUSY</para>
-</entry><entry
- align="char">
-<para>This error code indicates that there are conflicting
- requests. The corresponding demux device is setup to
- receive data from the front- end. Make sure that these
- filters are stopped and that the filters with input set to
- DMX_IN_DVR are started.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="dmx_start">
-<title>DMX_START</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call is used to start the actual filtering operation defined via the ioctl
- calls DMX_SET_FILTER or DMX_SET_PES_FILTER.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl( int fd, int request = DMX_START);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals DMX_START for this command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid argument, i.e. no filtering parameters provided via
- the DMX_SET_FILTER or DMX_SET_PES_FILTER
- functions.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBUSY</para>
-</entry><entry
- align="char">
-<para>This error code indicates that there are conflicting
- requests. There are active filters filtering data from
- another input source. Make sure that these filters are
- stopped before starting this filter.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="dmx_stop">
-<title>DMX_STOP</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call is used to stop the actual filtering operation defined via the
- ioctl calls DMX_SET_FILTER or DMX_SET_PES_FILTER and started via
- the DMX_START command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl( int fd, int request = DMX_STOP);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals DMX_STOP for this command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid file descriptor.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="dmx_set_filter">
-<title>DMX_SET_FILTER</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call sets up a filter according to the filter and mask parameters
- provided. A timeout may be defined stating number of seconds to wait for a
- section to be loaded. A value of 0 means that no timeout should be applied.
- Finally there is a flag field where it is possible to state whether a section should
- be CRC-checked, whether the filter should be a ”one-shot” filter, i.e. if the
- filtering operation should be stopped after the first section is received, and
- whether the filtering operation should be started immediately (without waiting
- for a DMX_START ioctl call). If a filter was previously set-up, this filter will
- be canceled, and the receive buffer will be flushed.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl( int fd, int request = DMX_SET_FILTER,
- struct dmx_sct_filter_params ⋆params);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals DMX_SET_FILTER for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct
- dmx_sct_filter_params
- *params</para>
-</entry><entry
- align="char">
-<para>Pointer to structure containing filter parameters.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid argument.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="dmx_set_pes_filter">
-<title>DMX_SET_PES_FILTER</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call sets up a PES filter according to the parameters provided. By a
- PES filter is meant a filter that is based just on the packet identifier (PID), i.e.
- no PES header or payload filtering capability is supported.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>The transport stream destination for the filtered output may be set. Also the
- PES type may be stated in order to be able to e.g. direct a video stream directly
- to the video decoder. Finally there is a flag field where it is possible to state
- whether the filtering operation should be started immediately (without waiting
- for a DMX_START ioctl call). If a filter was previously set-up, this filter will
- be cancelled, and the receive buffer will be flushed.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl( int fd, int request = DMX_SET_PES_FILTER,
- struct dmx_pes_filter_params ⋆params);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals DMX_SET_PES_FILTER for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct
- dmx_pes_filter_params
- *params</para>
-</entry><entry
- align="char">
-<para>Pointer to structure containing filter parameters.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid argument.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBUSY</para>
-</entry><entry
- align="char">
-<para>This error code indicates that there are conflicting
- requests. There are active filters filtering data from
- another input source. Make sure that these filters are
- stopped before starting this filter.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="dms_set_buffer_size">
-<title>DMX_SET_BUFFER_SIZE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call is used to set the size of the circular buffer used for filtered data.
- The default size is two maximum sized sections, i.e. if this function is not called
- a buffer size of 2 * 4096 bytes will be used.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl( int fd, int request =
- DMX_SET_BUFFER_SIZE, unsigned long size);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals DMX_SET_BUFFER_SIZE for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>unsigned long size</para>
-</entry><entry
- align="char">
-<para>Size of circular buffer.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>ENOMEM</para>
-</entry><entry
- align="char">
-<para>The driver was not able to allocate a buffer of the
- requested size.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="dmx_get_event">
-<title>DMX_GET_EVENT</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call returns an event if available. If an event is not available,
- the behavior depends on whether the device is in blocking or non-blocking
- mode. In the latter case, the call fails immediately with errno set to
- EWOULDBLOCK. In the former case, the call blocks until an event becomes
- available.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>The standard Linux poll() and/or select() system calls can be used with the
- device file descriptor to watch for new events. For select(), the file descriptor
- should be included in the exceptfds argument, and for poll(), POLLPRI should
- be specified as the wake-up condition. Only the latest event for each filter is
- saved.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl( int fd, int request = DMX_GET_EVENT,
- struct dmx_event ⋆ev);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals DMX_GET_EVENT for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct dmx_event *ev</para>
-</entry><entry
- align="char">
-<para>Pointer to the location where the event is to be stored.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>ev points to an invalid address.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EWOULDBLOCK</para>
-</entry><entry
- align="char">
-<para>There is no event pending, and the device is in
- non-blocking mode.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="dmx_get_stc">
-<title>DMX_GET_STC</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call returns the current value of the system time counter (which is driven
- by a PES filter of type DMX_PES_PCR). Some hardware supports more than one
- STC, so you must specify which one by setting the num field of stc before the ioctl
- (range 0...n). The result is returned in form of a ratio with a 64 bit numerator
- and a 32 bit denominator, so the real 90kHz STC value is stc->stc /
- stc->base
- .</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl( int fd, int request = DMX_GET_STC, struct
- dmx_stc ⋆stc);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals DMX_GET_STC for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct dmx_stc *stc</para>
-</entry><entry
- align="char">
-<para>Pointer to the location where the stc is to be stored.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>stc points to an invalid address.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid stc number.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
- </section></section>
diff --git a/Documentation/DocBook/dvb/dvbapi.xml b/Documentation/DocBook/dvb/dvbapi.xml
deleted file mode 100644
index 9fad86c..0000000
--- a/Documentation/DocBook/dvb/dvbapi.xml
+++ /dev/null
@@ -1,121 +0,0 @@
-<partinfo>
-<authorgroup>
-<author>
-<firstname>Ralph</firstname>
-<surname>Metzler</surname>
-<othername role="mi">J. K.</othername>
-<affiliation><address><email>rjkm@metzlerbros.de</email></address></affiliation>
-</author>
-<author>
-<firstname>Marcus</firstname>
-<surname>Metzler</surname>
-<othername role="mi">O. C.</othername>
-<affiliation><address><email>rjkm@metzlerbros.de</email></address></affiliation>
-</author>
-</authorgroup>
-<authorgroup>
-<author>
-<firstname>Mauro</firstname>
-<othername role="mi">Carvalho</othername>
-<surname>Chehab</surname>
-<affiliation><address><email>mchehab@redhat.com</email></address></affiliation>
-<contrib>Ported document to Docbook XML.</contrib>
-</author>
-</authorgroup>
-<copyright>
- <year>2002</year>
- <year>2003</year>
- <holder>Convergence GmbH</holder>
-</copyright>
-<copyright>
- <year>2009-2011</year>
- <holder>Mauro Carvalho Chehab</holder>
-</copyright>
-
-<revhistory>
-<!-- Put document revisions here, newest first. -->
-<revision>
- <revnumber>2.0.4</revnumber>
- <date>2011-05-06</date>
- <authorinitials>mcc</authorinitials>
- <revremark>
- Add more information about DVB APIv5, better describing the frontend GET/SET props ioctl's.
- </revremark>
-</revision>
-<revision>
- <revnumber>2.0.3</revnumber>
- <date>2010-07-03</date>
- <authorinitials>mcc</authorinitials>
- <revremark>
- Add some frontend capabilities flags, present on kernel, but missing at the specs.
- </revremark>
-</revision>
-<revision>
- <revnumber>2.0.2</revnumber>
- <date>2009-10-25</date>
- <authorinitials>mcc</authorinitials>
- <revremark>
- documents FE_SET_FRONTEND_TUNE_MODE and FE_DISHETWORK_SEND_LEGACY_CMD ioctls.
- </revremark>
-</revision>
-<revision>
-<revnumber>2.0.1</revnumber>
-<date>2009-09-16</date>
-<authorinitials>mcc</authorinitials>
-<revremark>
-Added ISDB-T test originally written by Patrick Boettcher
-</revremark>
-</revision>
-<revision>
-<revnumber>2.0.0</revnumber>
-<date>2009-09-06</date>
-<authorinitials>mcc</authorinitials>
-<revremark>Conversion from LaTex to DocBook XML. The
- contents is the same as the original LaTex version.</revremark>
-</revision>
-<revision>
-<revnumber>1.0.0</revnumber>
-<date>2003-07-24</date>
-<authorinitials>rjkm</authorinitials>
-<revremark>Initial revision on LaTEX.</revremark>
-</revision>
-</revhistory>
-</partinfo>
-
-
-<title>LINUX DVB API</title>
-<subtitle>Version 5.2</subtitle>
-<!-- ADD THE CHAPTERS HERE -->
- <chapter id="dvb_introdution">
- &sub-intro;
- </chapter>
- <chapter id="dvb_frontend">
- &sub-frontend;
- </chapter>
- <chapter id="dvb_demux">
- &sub-demux;
- </chapter>
- <chapter id="dvb_video">
- &sub-video;
- </chapter>
- <chapter id="dvb_audio">
- &sub-audio;
- </chapter>
- <chapter id="dvb_ca">
- &sub-ca;
- </chapter>
- <chapter id="dvb_net">
- &sub-net;
- </chapter>
- <chapter id="dvb_kdapi">
- &sub-kdapi;
- </chapter>
- <chapter id="dvb_examples">
- &sub-examples;
- </chapter>
-<!-- END OF CHAPTERS -->
- <appendix id="frontend_h">
- <title>DVB Frontend Header File</title>
- &sub-frontend-h;
- </appendix>
-
diff --git a/Documentation/DocBook/dvb/dvbproperty.xml b/Documentation/DocBook/dvb/dvbproperty.xml
deleted file mode 100644
index b5365f6..0000000
--- a/Documentation/DocBook/dvb/dvbproperty.xml
+++ /dev/null
@@ -1,590 +0,0 @@
-<section id="FE_GET_SET_PROPERTY">
-<title>FE_GET_PROPERTY/FE_SET_PROPERTY</title>
-
-<programlisting>
-/* Reserved fields should be set to 0 */
-struct dtv_property {
- __u32 cmd;
- union {
- __u32 data;
- struct {
- __u8 data[32];
- __u32 len;
- __u32 reserved1[3];
- void *reserved2;
- } buffer;
- } u;
- int result;
-} __attribute__ ((packed));
-
-/* num of properties cannot exceed DTV_IOCTL_MAX_MSGS per ioctl */
-#define DTV_IOCTL_MAX_MSGS 64
-
-struct dtv_properties {
- __u32 num;
- struct dtv_property *props;
-};
-</programlisting>
-
-<section id="FE_GET_PROPERTY">
-<title>FE_GET_PROPERTY</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call returns one or more frontend properties. This call only
- requires read-only access to the device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link>,
- dtv_properties ⋆props);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int num</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct dtv_property *props</para>
-</entry><entry
- align="char">
-<para>Points to the location where the front-end property commands are stored.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS</para>
-<informaltable><tgroup cols="2"><tbody><row>
- <entry align="char"><para>EINVAL</para></entry>
- <entry align="char"><para>Invalid parameter(s) received or number of parameters out of the range.</para></entry>
- </row><row>
- <entry align="char"><para>ENOMEM</para></entry>
- <entry align="char"><para>Out of memory.</para></entry>
- </row><row>
- <entry align="char"><para>EFAULT</para></entry>
- <entry align="char"><para>Failure while copying data from/to userspace.</para></entry>
- </row><row>
- <entry align="char"><para>EOPNOTSUPP</para></entry>
- <entry align="char"><para>Property type not supported.</para></entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_SET_PROPERTY">
-<title>FE_SET_PROPERTY</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call sets one or more frontend properties. This call only
- requires read-only access to the device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = <link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link>,
- dtv_properties ⋆props);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int num</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct dtv_property *props</para>
-</entry><entry
- align="char">
-<para>Points to the location where the front-end property commands are stored.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row>
- <entry align="char"><para>EINVAL</para></entry>
- <entry align="char"><para>Invalid parameter(s) received or number of parameters out of the range.</para></entry>
- </row><row>
- <entry align="char"><para>ENOMEM</para></entry>
- <entry align="char"><para>Out of memory.</para></entry>
- </row><row>
- <entry align="char"><para>EFAULT</para></entry>
- <entry align="char"><para>Failure while copying data from/to userspace.</para></entry>
- </row><row>
- <entry align="char"><para>EOPNOTSUPP</para></entry>
- <entry align="char"><para>Property type not supported.</para></entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section>
- <title>Property types</title>
-<para>
-On <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link>/<link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link>,
-the actual action is determined by the dtv_property cmd/data pairs. With one single ioctl, is possible to
-get/set up to 64 properties. The actual meaning of each property is described on the next sections.
-</para>
-
-<para>The available frontend property types are:</para>
-<programlisting>
-#define DTV_UNDEFINED 0
-#define DTV_TUNE 1
-#define DTV_CLEAR 2
-#define DTV_FREQUENCY 3
-#define DTV_MODULATION 4
-#define DTV_BANDWIDTH_HZ 5
-#define DTV_INVERSION 6
-#define DTV_DISEQC_MASTER 7
-#define DTV_SYMBOL_RATE 8
-#define DTV_INNER_FEC 9
-#define DTV_VOLTAGE 10
-#define DTV_TONE 11
-#define DTV_PILOT 12
-#define DTV_ROLLOFF 13
-#define DTV_DISEQC_SLAVE_REPLY 14
-#define DTV_FE_CAPABILITY_COUNT 15
-#define DTV_FE_CAPABILITY 16
-#define DTV_DELIVERY_SYSTEM 17
-#define DTV_ISDBT_PARTIAL_RECEPTION 18
-#define DTV_ISDBT_SOUND_BROADCASTING 19
-#define DTV_ISDBT_SB_SUBCHANNEL_ID 20
-#define DTV_ISDBT_SB_SEGMENT_IDX 21
-#define DTV_ISDBT_SB_SEGMENT_COUNT 22
-#define DTV_ISDBT_LAYERA_FEC 23
-#define DTV_ISDBT_LAYERA_MODULATION 24
-#define DTV_ISDBT_LAYERA_SEGMENT_COUNT 25
-#define DTV_ISDBT_LAYERA_TIME_INTERLEAVING 26
-#define DTV_ISDBT_LAYERB_FEC 27
-#define DTV_ISDBT_LAYERB_MODULATION 28
-#define DTV_ISDBT_LAYERB_SEGMENT_COUNT 29
-#define DTV_ISDBT_LAYERB_TIME_INTERLEAVING 30
-#define DTV_ISDBT_LAYERC_FEC 31
-#define DTV_ISDBT_LAYERC_MODULATION 32
-#define DTV_ISDBT_LAYERC_SEGMENT_COUNT 33
-#define DTV_ISDBT_LAYERC_TIME_INTERLEAVING 34
-#define DTV_API_VERSION 35
-#define DTV_CODE_RATE_HP 36
-#define DTV_CODE_RATE_LP 37
-#define DTV_GUARD_INTERVAL 38
-#define DTV_TRANSMISSION_MODE 39
-#define DTV_HIERARCHY 40
-#define DTV_ISDBT_LAYER_ENABLED 41
-#define DTV_ISDBS_TS_ID 42
-</programlisting>
-</section>
-
-<section id="fe_property_common">
- <title>Parameters that are common to all Digital TV standards</title>
- <section id="DTV_FREQUENCY">
- <title><constant>DTV_FREQUENCY</constant></title>
-
- <para>Central frequency of the channel, in HZ.</para>
-
- <para>Notes:</para>
- <para>1)For ISDB-T, the channels are usually transmitted with an offset of 143kHz.
- E.g. a valid frequncy could be 474143 kHz. The stepping is bound to the bandwidth of
- the channel which is 6MHz.</para>
-
- <para>2)As in ISDB-Tsb the channel consists of only one or three segments the
- frequency step is 429kHz, 3*429 respectively. As for ISDB-T the
- central frequency of the channel is expected.</para>
- </section>
-
- <section id="DTV_BANDWIDTH_HZ">
- <title><constant>DTV_BANDWIDTH_HZ</constant></title>
-
- <para>Bandwidth for the channel, in HZ.</para>
-
- <para>Possible values:
- <constant>1712000</constant>,
- <constant>5000000</constant>,
- <constant>6000000</constant>,
- <constant>7000000</constant>,
- <constant>8000000</constant>,
- <constant>10000000</constant>.
- </para>
-
- <para>Notes:</para>
-
- <para>1) For ISDB-T it should be always 6000000Hz (6MHz)</para>
- <para>2) For ISDB-Tsb it can vary depending on the number of connected segments</para>
- <para>3) Bandwidth doesn't apply for DVB-C transmissions, as the bandwidth
- for DVB-C depends on the symbol rate</para>
- <para>4) Bandwidth in ISDB-T is fixed (6MHz) or can be easily derived from
- other parameters (DTV_ISDBT_SB_SEGMENT_IDX,
- DTV_ISDBT_SB_SEGMENT_COUNT).</para>
- <para>5) DVB-T supports 6, 7 and 8MHz.</para>
- <para>6) In addition, DVB-T2 supports 1.172, 5 and 10MHz.</para>
- </section>
-
- <section id="DTV_DELIVERY_SYSTEM">
- <title><constant>DTV_DELIVERY_SYSTEM</constant></title>
-
- <para>Specifies the type of Delivery system</para>
-
- <para>Possible values: </para>
-<programlisting>
-typedef enum fe_delivery_system {
- SYS_UNDEFINED,
- SYS_DVBC_ANNEX_AC,
- SYS_DVBC_ANNEX_B,
- SYS_DVBT,
- SYS_DSS,
- SYS_DVBS,
- SYS_DVBS2,
- SYS_DVBH,
- SYS_ISDBT,
- SYS_ISDBS,
- SYS_ISDBC,
- SYS_ATSC,
- SYS_ATSCMH,
- SYS_DMBTH,
- SYS_CMMB,
- SYS_DAB,
- SYS_DVBT2,
-} fe_delivery_system_t;
-</programlisting>
-
- </section>
-
- <section id="DTV_TRANSMISSION_MODE">
- <title><constant>DTV_TRANSMISSION_MODE</constant></title>
-
- <para>Specifies the number of carriers used by the standard</para>
-
- <para>Possible values are:</para>
-<programlisting>
-typedef enum fe_transmit_mode {
- TRANSMISSION_MODE_2K,
- TRANSMISSION_MODE_8K,
- TRANSMISSION_MODE_AUTO,
- TRANSMISSION_MODE_4K,
- TRANSMISSION_MODE_1K,
- TRANSMISSION_MODE_16K,
- TRANSMISSION_MODE_32K,
-} fe_transmit_mode_t;
-</programlisting>
-
- <para>Notes:</para>
- <para>1) ISDB-T supports three carrier/symbol-size: 8K, 4K, 2K. It is called
- 'mode' in the standard: Mode 1 is 2K, mode 2 is 4K, mode 3 is 8K</para>
-
- <para>2) If <constant>DTV_TRANSMISSION_MODE</constant> is set the <constant>TRANSMISSION_MODE_AUTO</constant> the
- hardware will try to find the correct FFT-size (if capable) and will
- use TMCC to fill in the missing parameters.</para>
- <para>3) DVB-T specifies 2K and 8K as valid sizes.</para>
- <para>4) DVB-T2 specifies 1K, 2K, 4K, 8K, 16K and 32K.</para>
- </section>
-
- <section id="DTV_GUARD_INTERVAL">
- <title><constant>DTV_GUARD_INTERVAL</constant></title>
-
- <para>Possible values are:</para>
-<programlisting>
-typedef enum fe_guard_interval {
- GUARD_INTERVAL_1_32,
- GUARD_INTERVAL_1_16,
- GUARD_INTERVAL_1_8,
- GUARD_INTERVAL_1_4,
- GUARD_INTERVAL_AUTO,
- GUARD_INTERVAL_1_128,
- GUARD_INTERVAL_19_128,
- GUARD_INTERVAL_19_256,
-} fe_guard_interval_t;
-</programlisting>
-
- <para>Notes:</para>
- <para>1) If <constant>DTV_GUARD_INTERVAL</constant> is set the <constant>GUARD_INTERVAL_AUTO</constant> the hardware will
- try to find the correct guard interval (if capable) and will use TMCC to fill
- in the missing parameters.</para>
- <para>2) Intervals 1/128, 19/128 and 19/256 are used only for DVB-T2 at present</para>
- </section>
-</section>
-
-<section id="isdbt">
- <title>ISDB-T frontend</title>
- <para>This section describes shortly what are the possible parameters in the Linux
- DVB-API called "S2API" and now DVB API 5 in order to tune an ISDB-T/ISDB-Tsb
- demodulator:</para>
-
- <para>This ISDB-T/ISDB-Tsb API extension should reflect all information
- needed to tune any ISDB-T/ISDB-Tsb hardware. Of course it is possible
- that some very sophisticated devices won't need certain parameters to
- tune.</para>
-
- <para>The information given here should help application writers to know how
- to handle ISDB-T and ISDB-Tsb hardware using the Linux DVB-API.</para>
-
- <para>The details given here about ISDB-T and ISDB-Tsb are just enough to
- basically show the dependencies between the needed parameter values,
- but surely some information is left out. For more detailed information
- see the following documents:</para>
-
- <para>ARIB STD-B31 - "Transmission System for Digital Terrestrial
- Television Broadcasting" and</para>
- <para>ARIB TR-B14 - "Operational Guidelines for Digital Terrestrial
- Television Broadcasting".</para>
-
- <para>In order to read this document one has to have some knowledge the
- channel structure in ISDB-T and ISDB-Tsb. I.e. it has to be known to
- the reader that an ISDB-T channel consists of 13 segments, that it can
- have up to 3 layer sharing those segments, and things like that.</para>
-
- <para>Parameters used by ISDB-T and ISDB-Tsb.</para>
-
- <section id="isdbt-new-parms">
- <title>ISDB-T only parameters</title>
-
- <section id="isdbt-part-rec">
- <title><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></title>
-
- <para><constant>If DTV_ISDBT_SOUND_BROADCASTING</constant> is '0' this bit-field represents whether
- the channel is in partial reception mode or not.</para>
-
- <para>If '1' <constant>DTV_ISDBT_LAYERA_*</constant> values are assigned to the center segment and
- <constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant> has to be '1'.</para>
-
- <para>If in addition <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'
- <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> represents whether this ISDB-Tsb channel
- is consisting of one segment and layer or three segments and two layers.</para>
-
- <para>Possible values: 0, 1, -1 (AUTO)</para>
- </section>
-
- <section id="isdbt-sound-bcast">
- <title><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></title>
-
- <para>This field represents whether the other DTV_ISDBT_*-parameters are
- referring to an ISDB-T and an ISDB-Tsb channel. (See also
- <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>).</para>
-
- <para>Possible values: 0, 1, -1 (AUTO)</para>
- </section>
-
- <section id="isdbt-sb-ch-id">
- <title><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></title>
-
- <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
-
- <para>(Note of the author: This might not be the correct description of the
- <constant>SUBCHANNEL-ID</constant> in all details, but it is my understanding of the technical
- background needed to program a device)</para>
-
- <para>An ISDB-Tsb channel (1 or 3 segments) can be broadcasted alone or in a
- set of connected ISDB-Tsb channels. In this set of channels every
- channel can be received independently. The number of connected
- ISDB-Tsb segment can vary, e.g. depending on the frequency spectrum
- bandwidth available.</para>
-
- <para>Example: Assume 8 ISDB-Tsb connected segments are broadcasted. The
- broadcaster has several possibilities to put those channels in the
- air: Assuming a normal 13-segment ISDB-T spectrum he can align the 8
- segments from position 1-8 to 5-13 or anything in between.</para>
-
- <para>The underlying layer of segments are subchannels: each segment is
- consisting of several subchannels with a predefined IDs. A sub-channel
- is used to help the demodulator to synchronize on the channel.</para>
-
- <para>An ISDB-T channel is always centered over all sub-channels. As for
- the example above, in ISDB-Tsb it is no longer as simple as that.</para>
-
- <para><constant>The DTV_ISDBT_SB_SUBCHANNEL_ID</constant> parameter is used to give the
- sub-channel ID of the segment to be demodulated.</para>
-
- <para>Possible values: 0 .. 41, -1 (AUTO)</para>
- </section>
-
- <section id="isdbt-sb-seg-idx">
-
- <title><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></title>
-
- <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
-
- <para><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant> gives the index of the segment to be
- demodulated for an ISDB-Tsb channel where several of them are
- transmitted in the connected manner.</para>
-
- <para>Possible values: 0 .. <constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> - 1</para>
-
- <para>Note: This value cannot be determined by an automatic channel search.</para>
- </section>
-
- <section id="isdbt-sb-seg-cnt">
- <title><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></title>
-
- <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
-
- <para><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> gives the total count of connected ISDB-Tsb
- channels.</para>
-
- <para>Possible values: 1 .. 13</para>
-
- <para>Note: This value cannot be determined by an automatic channel search.</para>
- </section>
-
- <section id="isdb-hierq-layers">
- <title>Hierarchical layers</title>
-
- <para>ISDB-T channels can be coded hierarchically. As opposed to DVB-T in
- ISDB-T hierarchical layers can be decoded simultaneously. For that
- reason a ISDB-T demodulator has 3 viterbi and 3 reed-solomon-decoders.</para>
-
- <para>ISDB-T has 3 hierarchical layers which each can use a part of the
- available segments. The total number of segments over all layers has
- to 13 in ISDB-T.</para>
-
- <section id="isdbt-layer-ena">
- <title><constant>DTV_ISDBT_LAYER_ENABLED</constant></title>
-
- <para>Hierarchical reception in ISDB-T is achieved by enabling or disabling
- layers in the decoding process. Setting all bits of
- <constant>DTV_ISDBT_LAYER_ENABLED</constant> to '1' forces all layers (if applicable) to be
- demodulated. This is the default.</para>
-
- <para>If the channel is in the partial reception mode
- (<constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> = 1) the central segment can be decoded
- independently of the other 12 segments. In that mode layer A has to
- have a <constant>SEGMENT_COUNT</constant> of 1.</para>
-
- <para>In ISDB-Tsb only layer A is used, it can be 1 or 3 in ISDB-Tsb
- according to <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>. <constant>SEGMENT_COUNT</constant> must be filled
- accordingly.</para>
-
- <para>Possible values: 0x1, 0x2, 0x4 (|-able)</para>
-
- <para><constant>DTV_ISDBT_LAYER_ENABLED[0:0]</constant> - layer A</para>
- <para><constant>DTV_ISDBT_LAYER_ENABLED[1:1]</constant> - layer B</para>
- <para><constant>DTV_ISDBT_LAYER_ENABLED[2:2]</constant> - layer C</para>
- <para><constant>DTV_ISDBT_LAYER_ENABLED[31:3]</constant> unused</para>
- </section>
-
- <section id="isdbt-layer-fec">
- <title><constant>DTV_ISDBT_LAYER*_FEC</constant></title>
-
- <para>Possible values: <constant>FEC_AUTO</constant>, <constant>FEC_1_2</constant>, <constant>FEC_2_3</constant>, <constant>FEC_3_4</constant>, <constant>FEC_5_6</constant>, <constant>FEC_7_8</constant></para>
- </section>
-
- <section id="isdbt-layer-mod">
- <title><constant>DTV_ISDBT_LAYER*_MODULATION</constant></title>
-
- <para>Possible values: <constant>QAM_AUTO</constant>, QP<constant>SK, QAM_16</constant>, <constant>QAM_64</constant>, <constant>DQPSK</constant></para>
-
- <para>Note: If layer C is <constant>DQPSK</constant> layer B has to be <constant>DQPSK</constant>. If layer B is <constant>DQPSK</constant>
- and <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>=0 layer has to be <constant>DQPSK</constant>.</para>
- </section>
-
- <section id="isdbt-layer-seg-cnt">
- <title><constant>DTV_ISDBT_LAYER*_SEGMENT_COUNT</constant></title>
-
- <para>Possible values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -1 (AUTO)</para>
-
- <para>Note: Truth table for <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> and
- <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> and <constant>LAYER</constant>*_SEGMENT_COUNT</para>
-
- <informaltable id="isdbt-layer_seg-cnt-table">
- <tgroup cols="6">
-
- <tbody>
- <row>
- <entry>PR</entry>
- <entry>SB</entry>
- <entry>Layer A width</entry>
- <entry>Layer B width</entry>
- <entry>Layer C width</entry>
- <entry>total width</entry>
- </row>
-
- <row>
- <entry>0</entry>
- <entry>0</entry>
- <entry>1 .. 13</entry>
- <entry>1 .. 13</entry>
- <entry>1 .. 13</entry>
- <entry>13</entry>
- </row>
-
- <row>
- <entry>1</entry>
- <entry>0</entry>
- <entry>1</entry>
- <entry>1 .. 13</entry>
- <entry>1 .. 13</entry>
- <entry>13</entry>
- </row>
-
- <row>
- <entry>0</entry>
- <entry>1</entry>
- <entry>1</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>1</entry>
- </row>
-
- <row>
- <entry>1</entry>
- <entry>1</entry>
- <entry>1</entry>
- <entry>2</entry>
- <entry>0</entry>
- <entry>13</entry>
- </row>
- </tbody>
-
- </tgroup>
- </informaltable>
-
- </section>
-
- <section id="isdbt_layer_t_interl">
- <title><constant>DTV_ISDBT_LAYER*_TIME_INTERLEAVING</constant></title>
-
- <para>Possible values: 0, 1, 2, 3, -1 (AUTO)</para>
-
- <para>Note: The real inter-leaver depth-names depend on the mode (fft-size); the values
- here are referring to what can be found in the TMCC-structure -
- independent of the mode.</para>
- </section>
- </section>
- </section>
- <section id="dvbt2-params">
- <title>DVB-T2 parameters</title>
-
- <para>This section covers parameters that apply only to the DVB-T2 delivery method. DVB-T2
- support is currently in the early stages development so expect this section to grow
- and become more detailed with time.</para>
-
- <section id="dvbt2-plp-id">
- <title><constant>DTV_DVBT2_PLP_ID</constant></title>
-
- <para>DVB-T2 supports Physical Layer Pipes (PLP) to allow transmission of
- many data types via a single multiplex. The API will soon support this
- at which point this section will be expanded.</para>
- </section>
- </section>
-</section>
-</section>
diff --git a/Documentation/DocBook/dvb/dvbstb.png b/Documentation/DocBook/dvb/dvbstb.png
deleted file mode 100644
index 9b8f372..0000000
--- a/Documentation/DocBook/dvb/dvbstb.png
+++ /dev/null
Binary files differ
diff --git a/Documentation/DocBook/dvb/frontend.h.xml b/Documentation/DocBook/dvb/frontend.h.xml
deleted file mode 100644
index d792f78..0000000
--- a/Documentation/DocBook/dvb/frontend.h.xml
+++ /dev/null
@@ -1,428 +0,0 @@
-<programlisting>
-/*
- * frontend.h
- *
- * Copyright (C) 2000 Marcus Metzler <marcus@convergence.de>
- * Ralph Metzler <ralph@convergence.de>
- * Holger Waechtler <holger@convergence.de>
- * Andre Draszik <ad@convergence.de>
- * for convergence integrated media GmbH
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * as published by the Free Software Foundation; either version 2.1
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- */
-
-#ifndef _DVBFRONTEND_H_
-#define _DVBFRONTEND_H_
-
-#include <linux/types.h>
-
-typedef enum fe_type {
- FE_QPSK,
- FE_QAM,
- FE_OFDM,
- FE_ATSC
-} fe_type_t;
-
-
-typedef enum fe_caps {
- FE_IS_STUPID = 0,
- FE_CAN_INVERSION_AUTO = 0x1,
- FE_CAN_FEC_1_2 = 0x2,
- FE_CAN_FEC_2_3 = 0x4,
- FE_CAN_FEC_3_4 = 0x8,
- FE_CAN_FEC_4_5 = 0x10,
- FE_CAN_FEC_5_6 = 0x20,
- FE_CAN_FEC_6_7 = 0x40,
- FE_CAN_FEC_7_8 = 0x80,
- FE_CAN_FEC_8_9 = 0x100,
- FE_CAN_FEC_AUTO = 0x200,
- FE_CAN_QPSK = 0x400,
- FE_CAN_QAM_16 = 0x800,
- FE_CAN_QAM_32 = 0x1000,
- FE_CAN_QAM_64 = 0x2000,
- FE_CAN_QAM_128 = 0x4000,
- FE_CAN_QAM_256 = 0x8000,
- FE_CAN_QAM_AUTO = 0x10000,
- FE_CAN_TRANSMISSION_MODE_AUTO = 0x20000,
- FE_CAN_BANDWIDTH_AUTO = 0x40000,
- FE_CAN_GUARD_INTERVAL_AUTO = 0x80000,
- FE_CAN_HIERARCHY_AUTO = 0x100000,
- FE_CAN_8VSB = 0x200000,
- FE_CAN_16VSB = 0x400000,
- FE_HAS_EXTENDED_CAPS = 0x800000, /* We need more bitspace for newer APIs, indicate this. */
- FE_CAN_TURBO_FEC = 0x8000000, /* frontend supports "turbo fec modulation" */
- FE_CAN_2G_MODULATION = 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */
- FE_NEEDS_BENDING = 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */
- FE_CAN_RECOVER = 0x40000000, /* frontend can recover from a cable unplug automatically */
- FE_CAN_MUTE_TS = 0x80000000 /* frontend can stop spurious TS data output */
-} fe_caps_t;
-
-
-struct dvb_frontend_info {
- char name[128];
- fe_type_t type;
- __u32 frequency_min;
- __u32 frequency_max;
- __u32 frequency_stepsize;
- __u32 frequency_tolerance;
- __u32 symbol_rate_min;
- __u32 symbol_rate_max;
- __u32 symbol_rate_tolerance; /* ppm */
- __u32 notifier_delay; /* DEPRECATED */
- fe_caps_t caps;
-};
-
-
-/**
- * Check out the DiSEqC bus spec available on http://www.eutelsat.org/ for
- * the meaning of this struct...
- */
-struct dvb_diseqc_master_cmd {
- __u8 msg [6]; /* { framing, address, command, data [3] } */
- __u8 msg_len; /* valid values are 3...6 */
-};
-
-
-struct dvb_diseqc_slave_reply {
- __u8 msg [4]; /* { framing, data [3] } */
- __u8 msg_len; /* valid values are 0...4, 0 means no msg */
- int timeout; /* return from ioctl after timeout ms with */
-}; /* errorcode when no message was received */
-
-
-typedef enum fe_sec_voltage {
- SEC_VOLTAGE_13,
- SEC_VOLTAGE_18,
- SEC_VOLTAGE_OFF
-} fe_sec_voltage_t;
-
-
-typedef enum fe_sec_tone_mode {
- SEC_TONE_ON,
- SEC_TONE_OFF
-} fe_sec_tone_mode_t;
-
-
-typedef enum fe_sec_mini_cmd {
- SEC_MINI_A,
- SEC_MINI_B
-} fe_sec_mini_cmd_t;
-
-
-typedef enum fe_status {
- FE_HAS_SIGNAL = 0x01, /* found something above the noise level */
- FE_HAS_CARRIER = 0x02, /* found a DVB signal */
- FE_HAS_VITERBI = 0x04, /* FEC is stable */
- FE_HAS_SYNC = 0x08, /* found sync bytes */
- FE_HAS_LOCK = 0x10, /* everything's working... */
- FE_TIMEDOUT = 0x20, /* no lock within the last ~2 seconds */
- FE_REINIT = 0x40 /* frontend was reinitialized, */
-} fe_status_t; /* application is recommended to reset */
- /* DiSEqC, tone and parameters */
-
-typedef enum fe_spectral_inversion {
- INVERSION_OFF,
- INVERSION_ON,
- INVERSION_AUTO
-} fe_spectral_inversion_t;
-
-
-typedef enum fe_code_rate {
- FEC_NONE = 0,
- FEC_1_2,
- FEC_2_3,
- FEC_3_4,
- FEC_4_5,
- FEC_5_6,
- FEC_6_7,
- FEC_7_8,
- FEC_8_9,
- FEC_AUTO,
- FEC_3_5,
- FEC_9_10,
-} fe_code_rate_t;
-
-
-typedef enum fe_modulation {
- QPSK,
- QAM_16,
- QAM_32,
- QAM_64,
- QAM_128,
- QAM_256,
- QAM_AUTO,
- VSB_8,
- VSB_16,
- PSK_8,
- APSK_16,
- APSK_32,
- DQPSK,
-} fe_modulation_t;
-
-typedef enum fe_transmit_mode {
- TRANSMISSION_MODE_2K,
- TRANSMISSION_MODE_8K,
- TRANSMISSION_MODE_AUTO,
- TRANSMISSION_MODE_4K,
- TRANSMISSION_MODE_1K,
- TRANSMISSION_MODE_16K,
- TRANSMISSION_MODE_32K,
-} fe_transmit_mode_t;
-
-typedef enum fe_bandwidth {
- BANDWIDTH_8_MHZ,
- BANDWIDTH_7_MHZ,
- BANDWIDTH_6_MHZ,
- BANDWIDTH_AUTO,
- BANDWIDTH_5_MHZ,
- BANDWIDTH_10_MHZ,
- BANDWIDTH_1_712_MHZ,
-} fe_bandwidth_t;
-
-
-typedef enum fe_guard_interval {
- GUARD_INTERVAL_1_32,
- GUARD_INTERVAL_1_16,
- GUARD_INTERVAL_1_8,
- GUARD_INTERVAL_1_4,
- GUARD_INTERVAL_AUTO,
- GUARD_INTERVAL_1_128,
- GUARD_INTERVAL_19_128,
- GUARD_INTERVAL_19_256,
-} fe_guard_interval_t;
-
-
-typedef enum fe_hierarchy {
- HIERARCHY_NONE,
- HIERARCHY_1,
- HIERARCHY_2,
- HIERARCHY_4,
- HIERARCHY_AUTO
-} fe_hierarchy_t;
-
-
-struct dvb_qpsk_parameters {
- __u32 symbol_rate; /* symbol rate in Symbols per second */
- fe_code_rate_t fec_inner; /* forward error correction (see above) */
-};
-
-struct dvb_qam_parameters {
- __u32 symbol_rate; /* symbol rate in Symbols per second */
- fe_code_rate_t fec_inner; /* forward error correction (see above) */
- fe_modulation_t modulation; /* modulation type (see above) */
-};
-
-struct dvb_vsb_parameters {
- fe_modulation_t modulation; /* modulation type (see above) */
-};
-
-struct dvb_ofdm_parameters {
- fe_bandwidth_t bandwidth;
- fe_code_rate_t code_rate_HP; /* high priority stream code rate */
- fe_code_rate_t code_rate_LP; /* low priority stream code rate */
- fe_modulation_t constellation; /* modulation type (see above) */
- fe_transmit_mode_t transmission_mode;
- fe_guard_interval_t guard_interval;
- fe_hierarchy_t hierarchy_information;
-};
-
-
-struct dvb_frontend_parameters {
- __u32 frequency; /* (absolute) frequency in Hz for QAM/OFDM/ATSC */
- /* intermediate frequency in kHz for QPSK */
- fe_spectral_inversion_t inversion;
- union {
- struct dvb_qpsk_parameters qpsk;
- struct dvb_qam_parameters qam;
- struct dvb_ofdm_parameters ofdm;
- struct dvb_vsb_parameters vsb;
- } u;
-};
-
-
-struct dvb_frontend_event {
- fe_status_t status;
- struct dvb_frontend_parameters parameters;
-};
-
-/* S2API Commands */
-#define DTV_UNDEFINED 0
-#define DTV_TUNE 1
-#define DTV_CLEAR 2
-#define DTV_FREQUENCY 3
-#define DTV_MODULATION 4
-#define DTV_BANDWIDTH_HZ 5
-#define DTV_INVERSION 6
-#define DTV_DISEQC_MASTER 7
-#define DTV_SYMBOL_RATE 8
-#define DTV_INNER_FEC 9
-#define DTV_VOLTAGE 10
-#define DTV_TONE 11
-#define DTV_PILOT 12
-#define DTV_ROLLOFF 13
-#define DTV_DISEQC_SLAVE_REPLY 14
-
-/* Basic enumeration set for querying unlimited capabilities */
-#define DTV_FE_CAPABILITY_COUNT 15
-#define DTV_FE_CAPABILITY 16
-#define DTV_DELIVERY_SYSTEM 17
-
-/* ISDB-T and ISDB-Tsb */
-#define DTV_ISDBT_PARTIAL_RECEPTION 18
-#define DTV_ISDBT_SOUND_BROADCASTING 19
-
-#define DTV_ISDBT_SB_SUBCHANNEL_ID 20
-#define DTV_ISDBT_SB_SEGMENT_IDX 21
-#define DTV_ISDBT_SB_SEGMENT_COUNT 22
-
-#define DTV_ISDBT_LAYERA_FEC 23
-#define DTV_ISDBT_LAYERA_MODULATION 24
-#define DTV_ISDBT_LAYERA_SEGMENT_COUNT 25
-#define DTV_ISDBT_LAYERA_TIME_INTERLEAVING 26
-
-#define DTV_ISDBT_LAYERB_FEC 27
-#define DTV_ISDBT_LAYERB_MODULATION 28
-#define DTV_ISDBT_LAYERB_SEGMENT_COUNT 29
-#define DTV_ISDBT_LAYERB_TIME_INTERLEAVING 30
-
-#define DTV_ISDBT_LAYERC_FEC 31
-#define DTV_ISDBT_LAYERC_MODULATION 32
-#define DTV_ISDBT_LAYERC_SEGMENT_COUNT 33
-#define DTV_ISDBT_LAYERC_TIME_INTERLEAVING 34
-
-#define DTV_API_VERSION 35
-
-#define DTV_CODE_RATE_HP 36
-#define DTV_CODE_RATE_LP 37
-#define DTV_GUARD_INTERVAL 38
-#define DTV_TRANSMISSION_MODE 39
-#define DTV_HIERARCHY 40
-
-#define DTV_ISDBT_LAYER_ENABLED 41
-
-#define DTV_ISDBS_TS_ID 42
-
-#define DTV_DVBT2_PLP_ID 43
-
-#define DTV_MAX_COMMAND DTV_DVBT2_PLP_ID
-
-typedef enum fe_pilot {
- PILOT_ON,
- PILOT_OFF,
- PILOT_AUTO,
-} fe_pilot_t;
-
-typedef enum fe_rolloff {
- ROLLOFF_35, /* Implied value in DVB-S, default for DVB-S2 */
- ROLLOFF_20,
- ROLLOFF_25,
- ROLLOFF_AUTO,
-} fe_rolloff_t;
-
-typedef enum fe_delivery_system {
- SYS_UNDEFINED,
- SYS_DVBC_ANNEX_AC,
- SYS_DVBC_ANNEX_B,
- SYS_DVBT,
- SYS_DSS,
- SYS_DVBS,
- SYS_DVBS2,
- SYS_DVBH,
- SYS_ISDBT,
- SYS_ISDBS,
- SYS_ISDBC,
- SYS_ATSC,
- SYS_ATSCMH,
- SYS_DMBTH,
- SYS_CMMB,
- SYS_DAB,
- SYS_DVBT2,
-} fe_delivery_system_t;
-
-struct dtv_cmds_h {
- char *name; /* A display name for debugging purposes */
-
- __u32 cmd; /* A unique ID */
-
- /* Flags */
- __u32 set:1; /* Either a set or get property */
- __u32 buffer:1; /* Does this property use the buffer? */
- __u32 reserved:30; /* Align */
-};
-
-struct dtv_property {
- __u32 cmd;
- __u32 reserved[3];
- union {
- __u32 data;
- struct {
- __u8 data[32];
- __u32 len;
- __u32 reserved1[3];
- void *reserved2;
- } buffer;
- } u;
- int result;
-} __attribute__ ((packed));
-
-/* num of properties cannot exceed DTV_IOCTL_MAX_MSGS per ioctl */
-#define DTV_IOCTL_MAX_MSGS 64
-
-struct dtv_properties {
- __u32 num;
- struct dtv_property *props;
-};
-
-#define <link linkend="FE_GET_PROPERTY">FE_SET_PROPERTY</link> _IOW('o', 82, struct dtv_properties)
-#define <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link> _IOR('o', 83, struct dtv_properties)
-
-
-/**
- * When set, this flag will disable any zigzagging or other "normal" tuning
- * behaviour. Additionally, there will be no automatic monitoring of the lock
- * status, and hence no frontend events will be generated. If a frontend device
- * is closed, this flag will be automatically turned off when the device is
- * reopened read-write.
- */
-#define FE_TUNE_MODE_ONESHOT 0x01
-
-
-#define <link linkend="FE_GET_INFO">FE_GET_INFO</link> _IOR('o', 61, struct dvb_frontend_info)
-
-#define <link linkend="FE_DISEQC_RESET_OVERLOAD">FE_DISEQC_RESET_OVERLOAD</link> _IO('o', 62)
-#define <link linkend="FE_DISEQC_SEND_MASTER_CMD">FE_DISEQC_SEND_MASTER_CMD</link> _IOW('o', 63, struct dvb_diseqc_master_cmd)
-#define <link linkend="FE_DISEQC_RECV_SLAVE_REPLY">FE_DISEQC_RECV_SLAVE_REPLY</link> _IOR('o', 64, struct dvb_diseqc_slave_reply)
-#define <link linkend="FE_DISEQC_SEND_BURST">FE_DISEQC_SEND_BURST</link> _IO('o', 65) /* fe_sec_mini_cmd_t */
-
-#define <link linkend="FE_SET_TONE">FE_SET_TONE</link> _IO('o', 66) /* fe_sec_tone_mode_t */
-#define <link linkend="FE_SET_VOLTAGE">FE_SET_VOLTAGE</link> _IO('o', 67) /* fe_sec_voltage_t */
-#define <link linkend="FE_ENABLE_HIGH_LNB_VOLTAGE">FE_ENABLE_HIGH_LNB_VOLTAGE</link> _IO('o', 68) /* int */
-
-#define <link linkend="FE_READ_STATUS">FE_READ_STATUS</link> _IOR('o', 69, fe_status_t)
-#define <link linkend="FE_READ_BER">FE_READ_BER</link> _IOR('o', 70, __u32)
-#define <link linkend="FE_READ_SIGNAL_STRENGTH">FE_READ_SIGNAL_STRENGTH</link> _IOR('o', 71, __u16)
-#define <link linkend="FE_READ_SNR">FE_READ_SNR</link> _IOR('o', 72, __u16)
-#define <link linkend="FE_READ_UNCORRECTED_BLOCKS">FE_READ_UNCORRECTED_BLOCKS</link> _IOR('o', 73, __u32)
-
-#define <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link> _IOW('o', 76, struct dvb_frontend_parameters)
-#define <link linkend="FE_GET_FRONTEND">FE_GET_FRONTEND</link> _IOR('o', 77, struct dvb_frontend_parameters)
-#define <link linkend="FE_SET_FRONTEND_TUNE_MODE">FE_SET_FRONTEND_TUNE_MODE</link> _IO('o', 81) /* unsigned int */
-#define <link linkend="FE_GET_EVENT">FE_GET_EVENT</link> _IOR('o', 78, struct dvb_frontend_event)
-
-#define <link linkend="FE_DISHNETWORK_SEND_LEGACY_CMD">FE_DISHNETWORK_SEND_LEGACY_CMD</link> _IO('o', 80) /* unsigned int */
-
-#endif /*_DVBFRONTEND_H_*/
-</programlisting>
diff --git a/Documentation/DocBook/dvb/frontend.xml b/Documentation/DocBook/dvb/frontend.xml
deleted file mode 100644
index 60c6976..0000000
--- a/Documentation/DocBook/dvb/frontend.xml
+++ /dev/null
@@ -1,1851 +0,0 @@
-<title>DVB Frontend API</title>
-
-<para>The DVB frontend device controls the tuner and DVB demodulator
-hardware. It can be accessed through <emphasis
-role="tt">/dev/dvb/adapter0/frontend0</emphasis>. Data types and and
-ioctl definitions can be accessed by including <emphasis
-role="tt">linux/dvb/frontend.h</emphasis> in your application.</para>
-
-<para>DVB frontends come in three varieties: DVB-S (satellite), DVB-C
-(cable) and DVB-T (terrestrial). Transmission via the internet (DVB-IP)
-is not yet handled by this API but a future extension is possible. For
-DVB-S the frontend device also supports satellite equipment control
-(SEC) via DiSEqC and V-SEC protocols. The DiSEqC (digital SEC)
-specification is available from
-<ulink url="http://www.eutelsat.com/satellites/4_5_5.html">Eutelsat</ulink>.</para>
-
-<para>Note that the DVB API may also be used for MPEG decoder-only PCI
-cards, in which case there exists no frontend device.</para>
-
-<section id="frontend_types">
-<title>Frontend Data Types</title>
-
-<section id="frontend_type">
-<title>frontend type</title>
-
-<para>For historical reasons frontend types are named after the type of modulation used in
-transmission.</para>
-<programlisting>
- typedef enum fe_type {
- FE_QPSK, /⋆ DVB-S ⋆/
- FE_QAM, /⋆ DVB-C ⋆/
- FE_OFDM /⋆ DVB-T ⋆/
- } fe_type_t;
-</programlisting>
-
-</section>
-
-<section id="frontend_caps">
-<title>frontend capabilities</title>
-
-<para>Capabilities describe what a frontend can do. Some capabilities can only be supported for
-a specific frontend type.</para>
-<programlisting>
- typedef enum fe_caps {
- FE_IS_STUPID = 0,
- FE_CAN_INVERSION_AUTO = 0x1,
- FE_CAN_FEC_1_2 = 0x2,
- FE_CAN_FEC_2_3 = 0x4,
- FE_CAN_FEC_3_4 = 0x8,
- FE_CAN_FEC_4_5 = 0x10,
- FE_CAN_FEC_5_6 = 0x20,
- FE_CAN_FEC_6_7 = 0x40,
- FE_CAN_FEC_7_8 = 0x80,
- FE_CAN_FEC_8_9 = 0x100,
- FE_CAN_FEC_AUTO = 0x200,
- FE_CAN_QPSK = 0x400,
- FE_CAN_QAM_16 = 0x800,
- FE_CAN_QAM_32 = 0x1000,
- FE_CAN_QAM_64 = 0x2000,
- FE_CAN_QAM_128 = 0x4000,
- FE_CAN_QAM_256 = 0x8000,
- FE_CAN_QAM_AUTO = 0x10000,
- FE_CAN_TRANSMISSION_MODE_AUTO = 0x20000,
- FE_CAN_BANDWIDTH_AUTO = 0x40000,
- FE_CAN_GUARD_INTERVAL_AUTO = 0x80000,
- FE_CAN_HIERARCHY_AUTO = 0x100000,
- FE_CAN_8VSB = 0x200000,
- FE_CAN_16VSB = 0x400000,
- FE_HAS_EXTENDED_CAPS = 0x800000,
- FE_CAN_TURBO_FEC = 0x8000000,
- FE_CAN_2G_MODULATION = 0x10000000,
- FE_NEEDS_BENDING = 0x20000000,
- FE_CAN_RECOVER = 0x40000000,
- FE_CAN_MUTE_TS = 0x80000000
- } fe_caps_t;
-</programlisting>
-</section>
-
-<section id="frontend_info">
-<title>frontend information</title>
-
-<para>Information about the frontend ca be queried with
- <link linkend="FE_GET_INFO">FE_GET_INFO</link>.</para>
-
-<programlisting>
- struct dvb_frontend_info {
- char name[128];
- fe_type_t type;
- uint32_t frequency_min;
- uint32_t frequency_max;
- uint32_t frequency_stepsize;
- uint32_t frequency_tolerance;
- uint32_t symbol_rate_min;
- uint32_t symbol_rate_max;
- uint32_t symbol_rate_tolerance; /⋆ ppm ⋆/
- uint32_t notifier_delay; /⋆ ms ⋆/
- fe_caps_t caps;
- };
-</programlisting>
-</section>
-
-<section id="frontend_diseqc">
-<title>diseqc master command</title>
-
-<para>A message sent from the frontend to DiSEqC capable equipment.</para>
-<programlisting>
- struct dvb_diseqc_master_cmd {
- uint8_t msg [6]; /⋆ { framing, address, command, data[3] } ⋆/
- uint8_t msg_len; /⋆ valid values are 3...6 ⋆/
- };
-</programlisting>
-</section>
-<section role="subsection">
-<title>diseqc slave reply</title>
-
-<para>A reply to the frontend from DiSEqC 2.0 capable equipment.</para>
-<programlisting>
- struct dvb_diseqc_slave_reply {
- uint8_t msg [4]; /⋆ { framing, data [3] } ⋆/
- uint8_t msg_len; /⋆ valid values are 0...4, 0 means no msg ⋆/
- int timeout; /⋆ return from ioctl after timeout ms with ⋆/
- }; /⋆ errorcode when no message was received ⋆/
-</programlisting>
-</section>
-
-<section id="frontend_diseqc_slave_reply">
-<title>diseqc slave reply</title>
-<para>The voltage is usually used with non-DiSEqC capable LNBs to switch the polarzation
-(horizontal/vertical). When using DiSEqC epuipment this voltage has to be switched
-consistently to the DiSEqC commands as described in the DiSEqC spec.</para>
-<programlisting>
- typedef enum fe_sec_voltage {
- SEC_VOLTAGE_13,
- SEC_VOLTAGE_18
- } fe_sec_voltage_t;
-</programlisting>
-</section>
-
-<section id="frontend_sec_tone">
-<title>SEC continuous tone</title>
-
-<para>The continuous 22KHz tone is usually used with non-DiSEqC capable LNBs to switch the
-high/low band of a dual-band LNB. When using DiSEqC epuipment this voltage has to
-be switched consistently to the DiSEqC commands as described in the DiSEqC
-spec.</para>
-<programlisting>
- typedef enum fe_sec_tone_mode {
- SEC_TONE_ON,
- SEC_TONE_OFF
- } fe_sec_tone_mode_t;
-</programlisting>
-</section>
-
-<section id="frontend_sec_burst">
-<title>SEC tone burst</title>
-
-<para>The 22KHz tone burst is usually used with non-DiSEqC capable switches to select
-between two connected LNBs/satellites. When using DiSEqC epuipment this voltage has to
-be switched consistently to the DiSEqC commands as described in the DiSEqC
-spec.</para>
-<programlisting>
- typedef enum fe_sec_mini_cmd {
- SEC_MINI_A,
- SEC_MINI_B
- } fe_sec_mini_cmd_t;
-</programlisting>
-
-<para></para>
-</section>
-
-<section id="frontend_status">
-<title>frontend status</title>
-<para>Several functions of the frontend device use the fe_status data type defined
-by</para>
-<programlisting>
- typedef enum fe_status {
- FE_HAS_SIGNAL = 0x01, /⋆ found something above the noise level ⋆/
- FE_HAS_CARRIER = 0x02, /⋆ found a DVB signal ⋆/
- FE_HAS_VITERBI = 0x04, /⋆ FEC is stable ⋆/
- FE_HAS_SYNC = 0x08, /⋆ found sync bytes ⋆/
- FE_HAS_LOCK = 0x10, /⋆ everything's working... ⋆/
- FE_TIMEDOUT = 0x20, /⋆ no lock within the last ~2 seconds ⋆/
- FE_REINIT = 0x40 /⋆ frontend was reinitialized, ⋆/
- } fe_status_t; /⋆ application is recommned to reset ⋆/
-</programlisting>
-<para>to indicate the current state and/or state changes of the frontend hardware.
-</para>
-
-</section>
-
-<section id="frontend_params">
-<title>frontend parameters</title>
-<para>The kind of parameters passed to the frontend device for tuning depend on
-the kind of hardware you are using. All kinds of parameters are combined as an
-union in the FrontendParameters structure:</para>
-<programlisting>
- struct dvb_frontend_parameters {
- uint32_t frequency; /⋆ (absolute) frequency in Hz for QAM/OFDM ⋆/
- /⋆ intermediate frequency in kHz for QPSK ⋆/
- fe_spectral_inversion_t inversion;
- union {
- struct dvb_qpsk_parameters qpsk;
- struct dvb_qam_parameters qam;
- struct dvb_ofdm_parameters ofdm;
- } u;
- };
-</programlisting>
-<para>For satellite QPSK frontends you have to use the <constant>QPSKParameters</constant> member defined by</para>
-<programlisting>
- struct dvb_qpsk_parameters {
- uint32_t symbol_rate; /⋆ symbol rate in Symbols per second ⋆/
- fe_code_rate_t fec_inner; /⋆ forward error correction (see above) ⋆/
- };
-</programlisting>
-<para>for cable QAM frontend you use the <constant>QAMParameters</constant> structure</para>
-<programlisting>
- struct dvb_qam_parameters {
- uint32_t symbol_rate; /⋆ symbol rate in Symbols per second ⋆/
- fe_code_rate_t fec_inner; /⋆ forward error correction (see above) ⋆/
- fe_modulation_t modulation; /⋆ modulation type (see above) ⋆/
- };
-</programlisting>
-<para>DVB-T frontends are supported by the <constant>OFDMParamters</constant> structure
-</para>
-<programlisting>
- struct dvb_ofdm_parameters {
- fe_bandwidth_t bandwidth;
- fe_code_rate_t code_rate_HP; /⋆ high priority stream code rate ⋆/
- fe_code_rate_t code_rate_LP; /⋆ low priority stream code rate ⋆/
- fe_modulation_t constellation; /⋆ modulation type (see above) ⋆/
- fe_transmit_mode_t transmission_mode;
- fe_guard_interval_t guard_interval;
- fe_hierarchy_t hierarchy_information;
- };
-</programlisting>
-<para>In the case of QPSK frontends the <constant>Frequency</constant> field specifies the intermediate
-frequency, i.e. the offset which is effectively added to the local oscillator frequency (LOF) of
-the LNB. The intermediate frequency has to be specified in units of kHz. For QAM and
-OFDM frontends the Frequency specifies the absolute frequency and is given in
-Hz.
-</para>
-<para>The Inversion field can take one of these values:
-</para>
-<programlisting>
- typedef enum fe_spectral_inversion {
- INVERSION_OFF,
- INVERSION_ON,
- INVERSION_AUTO
- } fe_spectral_inversion_t;
-</programlisting>
-<para>It indicates if spectral inversion should be presumed or not. In the automatic setting
-(<constant>INVERSION_AUTO</constant>) the hardware will try to figure out the correct setting by
-itself.
-</para>
-<para>The possible values for the <constant>FEC_inner</constant> field are
-</para>
-<programlisting>
- typedef enum fe_code_rate {
- FEC_NONE = 0,
- FEC_1_2,
- FEC_2_3,
- FEC_3_4,
- FEC_4_5,
- FEC_5_6,
- FEC_6_7,
- FEC_7_8,
- FEC_8_9,
- FEC_AUTO
- } fe_code_rate_t;
-</programlisting>
-<para>which correspond to error correction rates of 1/2, 2/3, etc., no error correction or auto
-detection.
-</para>
-<para>For cable and terrestrial frontends (QAM and OFDM) one also has to specify the quadrature
-modulation mode which can be one of the following:
-</para>
-<programlisting>
- typedef enum fe_modulation {
- QPSK,
- QAM_16,
- QAM_32,
- QAM_64,
- QAM_128,
- QAM_256,
- QAM_AUTO
- } fe_modulation_t;
-</programlisting>
-<para>Finally, there are several more parameters for OFDM:
-</para>
-<programlisting>
- typedef enum fe_transmit_mode {
- TRANSMISSION_MODE_2K,
- TRANSMISSION_MODE_8K,
- TRANSMISSION_MODE_AUTO
- } fe_transmit_mode_t;
-</programlisting>
- <programlisting>
- typedef enum fe_bandwidth {
- BANDWIDTH_8_MHZ,
- BANDWIDTH_7_MHZ,
- BANDWIDTH_6_MHZ,
- BANDWIDTH_AUTO
- } fe_bandwidth_t;
-</programlisting>
- <programlisting>
- typedef enum fe_guard_interval {
- GUARD_INTERVAL_1_32,
- GUARD_INTERVAL_1_16,
- GUARD_INTERVAL_1_8,
- GUARD_INTERVAL_1_4,
- GUARD_INTERVAL_AUTO
- } fe_guard_interval_t;
-</programlisting>
- <programlisting>
- typedef enum fe_hierarchy {
- HIERARCHY_NONE,
- HIERARCHY_1,
- HIERARCHY_2,
- HIERARCHY_4,
- HIERARCHY_AUTO
- } fe_hierarchy_t;
-</programlisting>
-
-</section>
-
-<section id="frontend_events">
-<title>frontend events</title>
- <programlisting>
- struct dvb_frontend_event {
- fe_status_t status;
- struct dvb_frontend_parameters parameters;
- };
-</programlisting>
- </section>
-</section>
-
-
-<section id="frontend_fcalls">
-<title>Frontend Function Calls</title>
-
-<section id="frontend_f_open">
-<title>open()</title>
-<para>DESCRIPTION</para>
-<informaltable><tgroup cols="1"><tbody><row>
-<entry align="char">
-<para>This system call opens a named frontend device (/dev/dvb/adapter0/frontend0)
- for subsequent use. Usually the first thing to do after a successful open is to
- find out the frontend type with <link linkend="FE_GET_INFO">FE_GET_INFO</link>.</para>
-<para>The device can be opened in read-only mode, which only allows monitoring of
- device status and statistics, or read/write mode, which allows any kind of use
- (e.g. performing tuning operations.)
-</para>
-<para>In a system with multiple front-ends, it is usually the case that multiple devices
- cannot be open in read/write mode simultaneously. As long as a front-end
- device is opened in read/write mode, other open() calls in read/write mode will
- either fail or block, depending on whether non-blocking or blocking mode was
- specified. A front-end device opened in blocking mode can later be put into
- non-blocking mode (and vice versa) using the F_SETFL command of the fcntl
- system call. This is a standard system call, documented in the Linux manual
- page for fcntl. When an open() call has succeeded, the device will be ready
- for use in the specified mode. This implies that the corresponding hardware is
- powered up, and that other front-ends may have been powered down to make
- that possible.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>SYNOPSIS</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int open(const char ⋆deviceName, int flags);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>const char
- *deviceName</para>
-</entry><entry
- align="char">
-<para>Name of specific video device.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int flags</para>
-</entry><entry
- align="char">
-<para>A bit-wise OR of the following flags:</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_RDONLY read-only access</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_RDWR read/write access</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_NONBLOCK open in non-blocking mode</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>(blocking mode is the default)</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>ENODEV</para>
-</entry><entry
- align="char">
-<para>Device driver not loaded/available.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBUSY</para>
-</entry><entry
- align="char">
-<para>Device or resource busy.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid argument.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="frontend_f_close">
-<title>close()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call closes a previously opened front-end device. After closing
- a front-end device, its corresponding hardware might be powered down
- automatically.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int close(int fd);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_READ_STATUS">
-<title>FE_READ_STATUS</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call returns status information about the front-end. This call only
- requires read-only access to the device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = <link linkend="FE_READ_STATUS">FE_READ_STATUS</link>,
- fe_status_t ⋆status);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_READ_STATUS">FE_READ_STATUS</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct fe_status_t
- *status</para>
-</entry><entry
- align="char">
-<para>Points to the location where the front-end status word is
- to be stored.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>status points to invalid address.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_READ_BER">
-<title>FE_READ_BER</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call returns the bit error rate for the signal currently
- received/demodulated by the front-end. For this command, read-only access to
- the device is sufficient.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = <link linkend="FE_READ_BER">FE_READ_BER</link>,
- uint32_t ⋆ber);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_READ_BER">FE_READ_BER</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>uint32_t *ber</para>
-</entry><entry
- align="char">
-<para>The bit error rate is stored into *ber.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>ber points to invalid address.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>ENOSIGNAL</para>
-</entry><entry
- align="char">
-<para>There is no signal, thus no meaningful bit error rate. Also
- returned if the front-end is not turned on.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>ENOSYS</para>
-</entry><entry
- align="char">
-<para>Function not available for this device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_READ_SNR">
-<title>FE_READ_SNR</title>
-
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call returns the signal-to-noise ratio for the signal currently received
- by the front-end. For this command, read-only access to the device is sufficient.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = <link linkend="FE_READ_SNR">FE_READ_SNR</link>, int16_t
- ⋆snr);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_READ_SNR">FE_READ_SNR</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int16_t *snr</para>
-</entry><entry
- align="char">
-<para>The signal-to-noise ratio is stored into *snr.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>snr points to invalid address.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>ENOSIGNAL</para>
-</entry><entry
- align="char">
-<para>There is no signal, thus no meaningful signal strength
- value. Also returned if front-end is not turned on.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>ENOSYS</para>
-</entry><entry
- align="char">
-<para>Function not available for this device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_READ_SIGNAL_STRENGTH">
-<title>FE_READ_SIGNAL_STRENGTH</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call returns the signal strength value for the signal currently received
- by the front-end. For this command, read-only access to the device is sufficient.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl( int fd, int request =
- <link linkend="FE_READ_SIGNAL_STRENGTH">FE_READ_SIGNAL_STRENGTH</link>, int16_t ⋆strength);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_READ_SIGNAL_STRENGTH">FE_READ_SIGNAL_STRENGTH</link> for this
- command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int16_t *strength</para>
-</entry><entry
- align="char">
-<para>The signal strength value is stored into *strength.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>status points to invalid address.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>ENOSIGNAL</para>
-</entry><entry
- align="char">
-<para>There is no signal, thus no meaningful signal strength
- value. Also returned if front-end is not turned on.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>ENOSYS</para>
-</entry><entry
- align="char">
-<para>Function not available for this device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_READ_UNCORRECTED_BLOCKS">
-<title>FE_READ_UNCORRECTED_BLOCKS</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call returns the number of uncorrected blocks detected by the device
- driver during its lifetime. For meaningful measurements, the increment in block
- count during a specific time interval should be calculated. For this command,
- read-only access to the device is sufficient.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>Note that the counter will wrap to zero after its maximum count has been
- reached.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl( int fd, int request =
- <link linkend="FE_READ_UNCORRECTED_BLOCKS">FE_READ_UNCORRECTED_BLOCKS</link>, uint32_t ⋆ublocks);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_READ_UNCORRECTED_BLOCKS">FE_READ_UNCORRECTED_BLOCKS</link> for this
- command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>uint32_t *ublocks</para>
-</entry><entry
- align="char">
-<para>The total number of uncorrected blocks seen by the driver
- so far.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>ublocks points to invalid address.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>ENOSYS</para>
-</entry><entry
- align="char">
-<para>Function not available for this device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_SET_FRONTEND">
-<title>FE_SET_FRONTEND</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call starts a tuning operation using specified parameters. The result
- of this call will be successful if the parameters were valid and the tuning could
- be initiated. The result of the tuning operation in itself, however, will arrive
- asynchronously as an event (see documentation for <link linkend="FE_GET_EVENT">FE_GET_EVENT</link> and
- FrontendEvent.) If a new <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link> operation is initiated before
- the previous one was completed, the previous operation will be aborted in favor
- of the new one. This command requires read/write access to the device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link>,
- struct dvb_frontend_parameters ⋆p);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct
- dvb_frontend_parameters
- *p</para>
-</entry><entry
- align="char">
-<para>Points to parameters for tuning operation.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>p points to invalid address.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Maximum supported symbol rate reached.</para>
-</entry>
-</row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_GET_FRONTEND">
-<title>FE_GET_FRONTEND</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call queries the currently effective frontend parameters. For this
- command, read-only access to the device is sufficient.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = <link linkend="FE_GET_FRONTEND">FE_GET_FRONTEND</link>,
- struct dvb_frontend_parameters ⋆p);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct
- dvb_frontend_parameters
- *p</para>
-</entry><entry
- align="char">
-<para>Points to parameters for tuning operation.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>ERRORS
-</para>
-
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>p points to invalid address.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Maximum supported symbol rate reached.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section>
-
-<section id="FE_GET_EVENT">
-<title>FE_GET_EVENT</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call returns a frontend event if available. If an event is not
- available, the behavior depends on whether the device is in blocking or
- non-blocking mode. In the latter case, the call fails immediately with errno
- set to EWOULDBLOCK. In the former case, the call blocks until an event
- becomes available.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>The standard Linux poll() and/or select() system calls can be used with the
- device file descriptor to watch for new events. For select(), the file descriptor
- should be included in the exceptfds argument, and for poll(), POLLPRI should
- be specified as the wake-up condition. Since the event queue allocated is
- rather small (room for 8 events), the queue must be serviced regularly to avoid
- overflow. If an overflow happens, the oldest event is discarded from the queue,
- and an error (EOVERFLOW) occurs the next time the queue is read. After
- reporting the error condition in this fashion, subsequent
- <link linkend="FE_GET_EVENT">FE_GET_EVENT</link>
- calls will return events from the queue as usual.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>For the sake of implementation simplicity, this command requires read/write
- access to the device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = QPSK_GET_EVENT,
- struct dvb_frontend_event ⋆ev);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_GET_EVENT">FE_GET_EVENT</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct
- dvb_frontend_event
- *ev</para>
-</entry><entry
- align="char">
-<para>Points to the location where the event,</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>if any, is to be stored.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>ev points to invalid address.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EWOULDBLOCK</para>
-</entry><entry
- align="char">
-<para>There is no event pending, and the device is in
- non-blocking mode.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EOVERFLOW</para>
-</entry><entry
- align="char">
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>Overflow in event queue - one or more events were lost.</para>
-</entry>
-</row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_GET_INFO">
-<title>FE_GET_INFO</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call returns information about the front-end. This call only requires
- read-only access to the device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para> int ioctl(int fd, int request = <link linkend="FE_GET_INFO">FE_GET_INFO</link>, struct
- dvb_frontend_info ⋆info);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_GET_INFO">FE_GET_INFO</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct
- dvb_frontend_info
- *info</para>
-</entry><entry
- align="char">
-<para>Points to the location where the front-end information is
- to be stored.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>info points to invalid address.</para>
-</entry>
-</row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_DISEQC_RESET_OVERLOAD">
-<title>FE_DISEQC_RESET_OVERLOAD</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>If the bus has been automatically powered off due to power overload, this ioctl
- call restores the power to the bus. The call requires read/write access to the
- device. This call has no effect if the device is manually powered off. Not all
- DVB adapters support this ioctl.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request =
- <link linkend="FE_DISEQC_RESET_OVERLOAD">FE_DISEQC_RESET_OVERLOAD</link>);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_DISEQC_RESET_OVERLOAD">FE_DISEQC_RESET_OVERLOAD</link> for this
- command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EPERM</para>
-</entry><entry
- align="char">
-<para>Permission denied (needs read/write access).</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error in the device driver.</para>
-</entry>
-</row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_DISEQC_SEND_MASTER_CMD">
-<title>FE_DISEQC_SEND_MASTER_CMD</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call is used to send a a DiSEqC command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request =
- <link linkend="FE_DISEQC_SEND_MASTER_CMD">FE_DISEQC_SEND_MASTER_CMD</link>, struct
- dvb_diseqc_master_cmd ⋆cmd);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_DISEQC_SEND_MASTER_CMD">FE_DISEQC_SEND_MASTER_CMD</link> for this
- command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct
- dvb_diseqc_master_cmd
- *cmd</para>
-</entry><entry
- align="char">
-<para>Pointer to the command to be transmitted.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>Seq points to an invalid address.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>The data structure referred to by seq is invalid in some
- way.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EPERM</para>
-</entry><entry
- align="char">
-<para>Permission denied (needs read/write access).</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error in the device driver.</para>
-</entry>
-</row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_DISEQC_RECV_SLAVE_REPLY">
-<title>FE_DISEQC_RECV_SLAVE_REPLY</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call is used to receive reply to a DiSEqC 2.0 command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request =
- <link linkend="FE_DISEQC_RECV_SLAVE_REPLY">FE_DISEQC_RECV_SLAVE_REPLY</link>, struct
- dvb_diseqc_slave_reply ⋆reply);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_DISEQC_RECV_SLAVE_REPLY">FE_DISEQC_RECV_SLAVE_REPLY</link> for this
- command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct
- dvb_diseqc_slave_reply
- *reply</para>
-</entry><entry
- align="char">
-<para>Pointer to the command to be received.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>Seq points to an invalid address.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>The data structure referred to by seq is invalid in some
- way.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EPERM</para>
-</entry><entry
- align="char">
-<para>Permission denied (needs read/write access).</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error in the device driver.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_DISEQC_SEND_BURST">
-<title>FE_DISEQC_SEND_BURST</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call is used to send a 22KHz tone burst.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request =
- <link linkend="FE_DISEQC_SEND_BURST">FE_DISEQC_SEND_BURST</link>, fe_sec_mini_cmd_t burst);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_DISEQC_SEND_BURST">FE_DISEQC_SEND_BURST</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>fe_sec_mini_cmd_t
- burst</para>
-</entry><entry
- align="char">
-<para>burst A or B.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>Seq points to an invalid address.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>The data structure referred to by seq is invalid in some
- way.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EPERM</para>
-</entry><entry
- align="char">
-<para>Permission denied (needs read/write access).</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error in the device driver.</para>
-</entry>
-</row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_SET_TONE">
-<title>FE_SET_TONE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This call is used to set the generation of the continuous 22kHz tone. This call
- requires read/write permissions.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = <link linkend="FE_SET_TONE">FE_SET_TONE</link>,
- fe_sec_tone_mode_t tone);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_SET_TONE">FE_SET_TONE</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>fe_sec_tone_mode_t
- tone</para>
-</entry><entry
- align="char">
-<para>The requested tone generation mode (on/off).</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>ENODEV</para>
-</entry><entry
- align="char">
-<para>Device driver not loaded/available.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBUSY</para>
-</entry><entry
- align="char">
-<para>Device or resource busy.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid argument.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EPERM</para>
-</entry><entry
- align="char">
-<para>File not opened with read permissions.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error in the device driver.</para>
-</entry>
-</row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_SET_VOLTAGE">
-<title>FE_SET_VOLTAGE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This call is used to set the bus voltage. This call requires read/write
- permissions.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = <link linkend="FE_SET_VOLTAGE">FE_SET_VOLTAGE</link>,
- fe_sec_voltage_t voltage);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_SET_VOLTAGE">FE_SET_VOLTAGE</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>fe_sec_voltage_t
- voltage</para>
-</entry><entry
- align="char">
-<para>The requested bus voltage.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>ENODEV</para>
-</entry><entry
- align="char">
-<para>Device driver not loaded/available.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBUSY</para>
-</entry><entry
- align="char">
-<para>Device or resource busy.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid argument.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EPERM</para>
-</entry><entry
- align="char">
-<para>File not opened with read permissions.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error in the device driver.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_ENABLE_HIGH_LNB_VOLTAGE">
-<title>FE_ENABLE_HIGH_LNB_VOLTAGE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>If high != 0 enables slightly higher voltages instead of 13/18V (to compensate
- for long cables). This call requires read/write permissions. Not all DVB
- adapters support this ioctl.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request =
- <link linkend="FE_ENABLE_HIGH_LNB_VOLTAGE">FE_ENABLE_HIGH_LNB_VOLTAGE</link>, int high);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_SET_VOLTAGE">FE_SET_VOLTAGE</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int high</para>
-</entry><entry
- align="char">
-<para>The requested bus voltage.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>ENODEV</para>
-</entry><entry
- align="char">
-<para>Device driver not loaded/available.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBUSY</para>
-</entry><entry
- align="char">
-<para>Device or resource busy.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid argument.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EPERM</para>
-</entry><entry
- align="char">
-<para>File not opened with read permissions.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error in the device driver.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_SET_FRONTEND_TUNE_MODE">
-<title>FE_SET_FRONTEND_TUNE_MODE</title>
-<para>DESCRIPTION</para>
-<informaltable><tgroup cols="1"><tbody><row>
-<entry align="char">
-<para>Allow setting tuner mode flags to the frontend.</para>
-</entry>
-</row></tbody></tgroup></informaltable>
-
-<para>SYNOPSIS</para>
-<informaltable><tgroup cols="1"><tbody><row>
-<entry align="char">
-<para>int ioctl(int fd, int request =
-<link linkend="FE_SET_FRONTEND_TUNE_MODE">FE_SET_FRONTEND_TUNE_MODE</link>, unsigned int flags);</para>
-</entry>
-</row></tbody></tgroup></informaltable>
-
-<para>PARAMETERS</para>
-<informaltable><tgroup cols="2"><tbody><row>
-<entry align="char">
- <para>unsigned int flags</para>
-</entry>
-<entry align="char">
-<para>
-FE_TUNE_MODE_ONESHOT When set, this flag will disable any zigzagging or other "normal" tuning behaviour. Additionally, there will be no automatic monitoring of the lock status, and hence no frontend events will be generated. If a frontend device is closed, this flag will be automatically turned off when the device is reopened read-write.
-</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>ERRORS</para>
-<informaltable><tgroup cols="2"><tbody><row>
-<entry align="char"><para>EINVAL</para></entry>
-<entry align="char"><para>Invalid argument.</para></entry>
- </row></tbody></tgroup></informaltable>
-</section>
-
-<section id="FE_DISHNETWORK_SEND_LEGACY_CMD">
- <title>FE_DISHNETWORK_SEND_LEGACY_CMD</title>
-<para>DESCRIPTION</para>
-<informaltable><tgroup cols="1"><tbody><row>
-<entry align="char">
-<para>WARNING: This is a very obscure legacy command, used only at stv0299 driver. Should not be used on newer drivers.</para>
-<para>It provides a non-standard method for selecting Diseqc voltage on the frontend, for Dish Network legacy switches.</para>
-<para>As support for this ioctl were added in 2004, this means that such dishes were already legacy in 2004.</para>
-</entry>
-</row></tbody></tgroup></informaltable>
-
-<para>SYNOPSIS</para>
-<informaltable><tgroup cols="1"><tbody><row>
-<entry align="char">
-<para>int ioctl(int fd, int request =
- <link linkend="FE_DISHNETWORK_SEND_LEGACY_CMD">FE_DISHNETWORK_SEND_LEGACY_CMD</link>, unsigned long cmd);</para>
-</entry>
-</row></tbody></tgroup></informaltable>
-
-<para>PARAMETERS</para>
-<informaltable><tgroup cols="2"><tbody><row>
-<entry align="char">
- <para>unsigned long cmd</para>
-</entry>
-<entry align="char">
-<para>
-sends the specified raw cmd to the dish via DISEqC.
-</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>ERRORS</para>
-<informaltable><tgroup cols="1"><tbody><row>
-<entry align="char">
- <para>There are no errors in use for this call</para>
-</entry>
-</row></tbody></tgroup></informaltable>
-</section>
-
-</section>
-
-&sub-dvbproperty;
diff --git a/Documentation/DocBook/dvb/intro.xml b/Documentation/DocBook/dvb/intro.xml
deleted file mode 100644
index 0dc83f6..0000000
--- a/Documentation/DocBook/dvb/intro.xml
+++ /dev/null
@@ -1,191 +0,0 @@
-<title>Introduction</title>
-
-<section id="requisites">
-<title>What you need to know</title>
-
-<para>The reader of this document is required to have some knowledge in
-the area of digital video broadcasting (DVB) and should be familiar with
-part I of the MPEG2 specification ISO/IEC 13818 (aka ITU-T H.222), i.e
-you should know what a program/transport stream (PS/TS) is and what is
-meant by a packetized elementary stream (PES) or an I-frame.</para>
-
-<para>Various DVB standards documents are available from
-<ulink url="http://www.dvb.org" /> and/or
-<ulink url="http://www.etsi.org" />.</para>
-
-<para>It is also necessary to know how to access unix/linux devices and
-how to use ioctl calls. This also includes the knowledge of C or C++.
-</para>
-</section>
-
-<section id="history">
-<title>History</title>
-
-<para>The first API for DVB cards we used at Convergence in late 1999
-was an extension of the Video4Linux API which was primarily developed
-for frame grabber cards. As such it was not really well suited to be
-used for DVB cards and their new features like recording MPEG streams
-and filtering several section and PES data streams at the same time.
-</para>
-
-<para>In early 2000, we were approached by Nokia with a proposal for a
-new standard Linux DVB API. As a commitment to the development of
-terminals based on open standards, Nokia and Convergence made it
-available to all Linux developers and published it on
-<ulink url="http://www.linuxtv.org/" /> in September 2000.
-Convergence is the maintainer of the Linux DVB API. Together with the
-LinuxTV community (i.e. you, the reader of this document), the Linux DVB
-API will be constantly reviewed and improved. With the Linux driver for
-the Siemens/Hauppauge DVB PCI card Convergence provides a first
-implementation of the Linux DVB API.</para>
-</section>
-
-<section id="overview">
-<title>Overview</title>
-
-<figure id="stb_components">
-<title>Components of a DVB card/STB</title>
-<mediaobject>
-<imageobject>
-<imagedata fileref="dvbstb.pdf" format="PS" />
-</imageobject>
-<imageobject>
-<imagedata fileref="dvbstb.png" format="PNG" />
-</imageobject>
-</mediaobject>
-</figure>
-
-<para>A DVB PCI card or DVB set-top-box (STB) usually consists of the
-following main hardware components: </para>
-
-<itemizedlist>
- <listitem>
-
-<para>Frontend consisting of tuner and DVB demodulator</para>
-
-<para>Here the raw signal reaches the DVB hardware from a satellite dish
-or antenna or directly from cable. The frontend down-converts and
-demodulates this signal into an MPEG transport stream (TS). In case of a
-satellite frontend, this includes a facility for satellite equipment
-control (SEC), which allows control of LNB polarization, multi feed
-switches or dish rotors.</para>
-
-</listitem>
- <listitem>
-
-<para>Conditional Access (CA) hardware like CI adapters and smartcard slots
-</para>
-
-<para>The complete TS is passed through the CA hardware. Programs to
-which the user has access (controlled by the smart card) are decoded in
-real time and re-inserted into the TS.</para>
-
-</listitem>
- <listitem>
- <para>Demultiplexer which filters the incoming DVB stream</para>
-
-<para>The demultiplexer splits the TS into its components like audio and
-video streams. Besides usually several of such audio and video streams
-it also contains data streams with information about the programs
-offered in this or other streams of the same provider.</para>
-
-</listitem>
-<listitem>
-
-<para>MPEG2 audio and video decoder</para>
-
-<para>The main targets of the demultiplexer are the MPEG2 audio and
-video decoders. After decoding they pass on the uncompressed audio and
-video to the computer screen or (through a PAL/NTSC encoder) to a TV
-set.</para>
-
-
-</listitem>
-</itemizedlist>
-
-<para><xref linkend="stb_components" /> shows a crude schematic of the control and data flow
-between those components.</para>
-
-<para>On a DVB PCI card not all of these have to be present since some
-functionality can be provided by the main CPU of the PC (e.g. MPEG
-picture and sound decoding) or is not needed (e.g. for data-only uses
-like “internet over satellite”). Also not every card or STB
-provides conditional access hardware.</para>
-
-</section>
-
-<section id="dvb_devices">
-<title>Linux DVB Devices</title>
-
-<para>The Linux DVB API lets you control these hardware components
-through currently six Unix-style character devices for video, audio,
-frontend, demux, CA and IP-over-DVB networking. The video and audio
-devices control the MPEG2 decoder hardware, the frontend device the
-tuner and the DVB demodulator. The demux device gives you control over
-the PES and section filters of the hardware. If the hardware does not
-support filtering these filters can be implemented in software. Finally,
-the CA device controls all the conditional access capabilities of the
-hardware. It can depend on the individual security requirements of the
-platform, if and how many of the CA functions are made available to the
-application through this device.</para>
-
-<para>All devices can be found in the <emphasis role="tt">/dev</emphasis>
-tree under <emphasis role="tt">/dev/dvb</emphasis>. The individual devices
-are called:</para>
-
-<itemizedlist>
-<listitem>
-
-<para><emphasis role="tt">/dev/dvb/adapterN/audioM</emphasis>,</para>
-</listitem>
-<listitem>
-<para><emphasis role="tt">/dev/dvb/adapterN/videoM</emphasis>,</para>
-</listitem>
-<listitem>
-<para><emphasis role="tt">/dev/dvb/adapterN/frontendM</emphasis>,</para>
-</listitem>
- <listitem>
-
-<para><emphasis role="tt">/dev/dvb/adapterN/netM</emphasis>,</para>
-</listitem>
- <listitem>
-
-<para><emphasis role="tt">/dev/dvb/adapterN/demuxM</emphasis>,</para>
-</listitem>
- <listitem>
-
-<para><emphasis role="tt">/dev/dvb/adapterN/caM</emphasis>,</para></listitem></itemizedlist>
-
-<para>where N enumerates the DVB PCI cards in a system starting
-from 0, and M enumerates the devices of each type within each
-adapter, starting from 0, too. We will omit the “<emphasis
-role="tt">/dev/dvb/adapterN/</emphasis>” in the further dicussion
-of these devices. The naming scheme for the devices is the same wheter
-devfs is used or not.</para>
-
-<para>More details about the data structures and function calls of all
-the devices are described in the following chapters.</para>
-
-</section>
-
-<section id="include_files">
-<title>API include files</title>
-
-<para>For each of the DVB devices a corresponding include file exists.
-The DVB API include files should be included in application sources with
-a partial path like:</para>
-
-
-<programlisting>
- #include <linux/dvb/frontend.h>
-</programlisting>
-
-<para>To enable applications to support different API version, an
-additional include file <emphasis
-role="tt">linux/dvb/version.h</emphasis> exists, which defines the
-constant <emphasis role="tt">DVB_API_VERSION</emphasis>. This document
-describes <emphasis role="tt">DVB_API_VERSION 3</emphasis>.
-</para>
-
-</section>
-
diff --git a/Documentation/DocBook/dvb/net.xml b/Documentation/DocBook/dvb/net.xml
deleted file mode 100644
index 94e388d..0000000
--- a/Documentation/DocBook/dvb/net.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<title>DVB Network API</title>
-<para>The DVB net device enables feeding of MPE (multi protocol encapsulation) packets
-received via DVB into the Linux network protocol stack, e.g. for internet via satellite
-applications. It can be accessed through <emphasis role="tt">/dev/dvb/adapter0/net0</emphasis>. Data types and
-and ioctl definitions can be accessed by including <emphasis role="tt">linux/dvb/net.h</emphasis> in your
-application.
-</para>
-<section id="dvb_net_types">
-<title>DVB Net Data Types</title>
-<para>To be written…
-</para>
-</section>
diff --git a/Documentation/DocBook/dvb/video.xml b/Documentation/DocBook/dvb/video.xml
deleted file mode 100644
index 7bb287e..0000000
--- a/Documentation/DocBook/dvb/video.xml
+++ /dev/null
@@ -1,1971 +0,0 @@
-<title>DVB Video Device</title>
-<para>The DVB video device controls the MPEG2 video decoder of the DVB hardware. It
-can be accessed through <emphasis role="tt">/dev/dvb/adapter0/video0</emphasis>. Data types and and
-ioctl definitions can be accessed by including <emphasis role="tt">linux/dvb/video.h</emphasis> in your
-application.
-</para>
-<para>Note that the DVB video device only controls decoding of the MPEG video stream, not
-its presentation on the TV or computer screen. On PCs this is typically handled by an
-associated video4linux device, e.g. <emphasis role="tt">/dev/video</emphasis>, which allows scaling and defining output
-windows.
-</para>
-<para>Some DVB cards don’t have their own MPEG decoder, which results in the omission of
-the audio and video device as well as the video4linux device.
-</para>
-<para>The ioctls that deal with SPUs (sub picture units) and navigation packets are only
-supported on some MPEG decoders made for DVD playback.
-</para>
-<section id="video_types">
-<title>Video Data Types</title>
-
-<section id="video_format_t">
-<title>video_format_t</title>
-<para>The <emphasis role="tt">video_format_t</emphasis> data type defined by
-</para>
-<programlisting>
- typedef enum {
- VIDEO_FORMAT_4_3,
- VIDEO_FORMAT_16_9
- } video_format_t;
-</programlisting>
-<para>is used in the VIDEO_SET_FORMAT function (??) to tell the driver which aspect ratio
-the output hardware (e.g. TV) has. It is also used in the data structures video_status
-(??) returned by VIDEO_GET_STATUS (??) and video_event (??) returned by
-VIDEO_GET_EVENT (??) which report about the display format of the current video
-stream.
-</para>
-</section>
-
-<section id="video_display_format_t">
-<title>video_display_format_t</title>
-<para>In case the display format of the video stream and of the display hardware differ the
-application has to specify how to handle the cropping of the picture. This can be done using
-the VIDEO_SET_DISPLAY_FORMAT call (??) which accepts
-</para>
-<programlisting>
- typedef enum {
- VIDEO_PAN_SCAN,
- VIDEO_LETTER_BOX,
- VIDEO_CENTER_CUT_OUT
- } video_display_format_t;
-</programlisting>
-<para>as argument.
-</para>
-</section>
-
-<section id="video_stream_source">
-<title>video stream source</title>
-<para>The video stream source is set through the VIDEO_SELECT_SOURCE call and can take
-the following values, depending on whether we are replaying from an internal (demuxer) or
-external (user write) source.
-</para>
-<programlisting>
- typedef enum {
- VIDEO_SOURCE_DEMUX,
- VIDEO_SOURCE_MEMORY
- } video_stream_source_t;
-</programlisting>
-<para>VIDEO_SOURCE_DEMUX selects the demultiplexer (fed either by the frontend or the
-DVR device) as the source of the video stream. If VIDEO_SOURCE_MEMORY
-is selected the stream comes from the application through the <emphasis role="tt">write()</emphasis> system
-call.
-</para>
-</section>
-
-<section id="video_play_state">
-<title>video play state</title>
-<para>The following values can be returned by the VIDEO_GET_STATUS call representing the
-state of video playback.
-</para>
-<programlisting>
- typedef enum {
- VIDEO_STOPPED,
- VIDEO_PLAYING,
- VIDEO_FREEZED
- } video_play_state_t;
-</programlisting>
-</section>
-
-<section id="video_event">
-<title>struct video_event</title>
-<para>The following is the structure of a video event as it is returned by the VIDEO_GET_EVENT
-call.
-</para>
-<programlisting>
- struct video_event {
- int32_t type;
- time_t timestamp;
- union {
- video_format_t video_format;
- } u;
- };
-</programlisting>
-</section>
-
-<section id="video_status">
-<title>struct video_status</title>
-<para>The VIDEO_GET_STATUS call returns the following structure informing about various
-states of the playback operation.
-</para>
-<programlisting>
- struct video_status {
- boolean video_blank;
- video_play_state_t play_state;
- video_stream_source_t stream_source;
- video_format_t video_format;
- video_displayformat_t display_format;
- };
-</programlisting>
-<para>If video_blank is set video will be blanked out if the channel is changed or if playback is
-stopped. Otherwise, the last picture will be displayed. play_state indicates if the video is
-currently frozen, stopped, or being played back. The stream_source corresponds to the seleted
-source for the video stream. It can come either from the demultiplexer or from memory.
-The video_format indicates the aspect ratio (one of 4:3 or 16:9) of the currently
-played video stream. Finally, display_format corresponds to the selected cropping
-mode in case the source video format is not the same as the format of the output
-device.
-</para>
-</section>
-
-<section id="video_still_picture">
-<title>struct video_still_picture</title>
-<para>An I-frame displayed via the VIDEO_STILLPICTURE call is passed on within the
-following structure.
-</para>
-<programlisting>
- /⋆ pointer to and size of a single iframe in memory ⋆/
- struct video_still_picture {
- char ⋆iFrame;
- int32_t size;
- };
-</programlisting>
-</section>
-
-<section id="video_caps">
-<title>video capabilities</title>
-<para>A call to VIDEO_GET_CAPABILITIES returns an unsigned integer with the following
-bits set according to the hardwares capabilities.
-</para>
-<programlisting>
- /⋆ bit definitions for capabilities: ⋆/
- /⋆ can the hardware decode MPEG1 and/or MPEG2? ⋆/
- #define VIDEO_CAP_MPEG1 1
- #define VIDEO_CAP_MPEG2 2
- /⋆ can you send a system and/or program stream to video device?
- (you still have to open the video and the audio device but only
- send the stream to the video device) ⋆/
- #define VIDEO_CAP_SYS 4
- #define VIDEO_CAP_PROG 8
- /⋆ can the driver also handle SPU, NAVI and CSS encoded data?
- (CSS API is not present yet) ⋆/
- #define VIDEO_CAP_SPU 16
- #define VIDEO_CAP_NAVI 32
- #define VIDEO_CAP_CSS 64
-</programlisting>
-</section>
-
-<section id="video_system">
-<title>video system</title>
-<para>A call to VIDEO_SET_SYSTEM sets the desired video system for TV output. The
-following system types can be set:
-</para>
-<programlisting>
- typedef enum {
- VIDEO_SYSTEM_PAL,
- VIDEO_SYSTEM_NTSC,
- VIDEO_SYSTEM_PALN,
- VIDEO_SYSTEM_PALNc,
- VIDEO_SYSTEM_PALM,
- VIDEO_SYSTEM_NTSC60,
- VIDEO_SYSTEM_PAL60,
- VIDEO_SYSTEM_PALM60
- } video_system_t;
-</programlisting>
-</section>
-
-<section id="video_highlight">
-<title>struct video_highlight</title>
-<para>Calling the ioctl VIDEO_SET_HIGHLIGHTS posts the SPU highlight information. The
-call expects the following format for that information:
-</para>
-<programlisting>
- typedef
- struct video_highlight {
- boolean active; /⋆ 1=show highlight, 0=hide highlight ⋆/
- uint8_t contrast1; /⋆ 7- 4 Pattern pixel contrast ⋆/
- /⋆ 3- 0 Background pixel contrast ⋆/
- uint8_t contrast2; /⋆ 7- 4 Emphasis pixel-2 contrast ⋆/
- /⋆ 3- 0 Emphasis pixel-1 contrast ⋆/
- uint8_t color1; /⋆ 7- 4 Pattern pixel color ⋆/
- /⋆ 3- 0 Background pixel color ⋆/
- uint8_t color2; /⋆ 7- 4 Emphasis pixel-2 color ⋆/
- /⋆ 3- 0 Emphasis pixel-1 color ⋆/
- uint32_t ypos; /⋆ 23-22 auto action mode ⋆/
- /⋆ 21-12 start y ⋆/
- /⋆ 9- 0 end y ⋆/
- uint32_t xpos; /⋆ 23-22 button color number ⋆/
- /⋆ 21-12 start x ⋆/
- /⋆ 9- 0 end x ⋆/
- } video_highlight_t;
-</programlisting>
-
-</section>
-<section id="video_spu">
-<title>video SPU</title>
-<para>Calling VIDEO_SET_SPU deactivates or activates SPU decoding, according to the
-following format:
-</para>
-<programlisting>
- typedef
- struct video_spu {
- boolean active;
- int stream_id;
- } video_spu_t;
-</programlisting>
-
-</section>
-<section id="video_spu_palette">
-<title>video SPU palette</title>
-<para>The following structure is used to set the SPU palette by calling VIDEO_SPU_PALETTE:
-</para>
-<programlisting>
- typedef
- struct video_spu_palette{
- int length;
- uint8_t ⋆palette;
- } video_spu_palette_t;
-</programlisting>
-
-</section>
-<section id="video_navi_pack">
-<title>video NAVI pack</title>
-<para>In order to get the navigational data the following structure has to be passed to the ioctl
-VIDEO_GET_NAVI:
-</para>
-<programlisting>
- typedef
- struct video_navi_pack{
- int length; /⋆ 0 ... 1024 ⋆/
- uint8_t data[1024];
- } video_navi_pack_t;
-</programlisting>
-</section>
-
-
-<section id="video_attributes">
-<title>video attributes</title>
-<para>The following attributes can be set by a call to VIDEO_SET_ATTRIBUTES:
-</para>
-<programlisting>
- typedef uint16_t video_attributes_t;
- /⋆ bits: descr. ⋆/
- /⋆ 15-14 Video compression mode (0=MPEG-1, 1=MPEG-2) ⋆/
- /⋆ 13-12 TV system (0=525/60, 1=625/50) ⋆/
- /⋆ 11-10 Aspect ratio (0=4:3, 3=16:9) ⋆/
- /⋆ 9- 8 permitted display mode on 4:3 monitor (0=both, 1=only pan-sca ⋆/
- /⋆ 7 line 21-1 data present in GOP (1=yes, 0=no) ⋆/
- /⋆ 6 line 21-2 data present in GOP (1=yes, 0=no) ⋆/
- /⋆ 5- 3 source resolution (0=720x480/576, 1=704x480/576, 2=352x480/57 ⋆/
- /⋆ 2 source letterboxed (1=yes, 0=no) ⋆/
- /⋆ 0 film/camera mode (0=camera, 1=film (625/50 only)) ⋆/
-</programlisting>
-</section></section>
-
-
-<section id="video_function_calls">
-<title>Video Function Calls</title>
-
-
-<section id="video_fopen">
-<title>open()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call opens a named video device (e.g. /dev/dvb/adapter0/video0)
- for subsequent use.</para>
-<para>When an open() call has succeeded, the device will be ready for use.
- The significance of blocking or non-blocking mode is described in the
- documentation for functions where there is a difference. It does not affect the
- semantics of the open() call itself. A device opened in blocking mode can later
- be put into non-blocking mode (and vice versa) using the F_SETFL command
- of the fcntl system call. This is a standard system call, documented in the Linux
- manual page for fcntl. Only one user can open the Video Device in O_RDWR
- mode. All other attempts to open the device in this mode will fail, and an
- error-code will be returned. If the Video Device is opened in O_RDONLY
- mode, the only ioctl call that can be used is VIDEO_GET_STATUS. All other
- call will return an error code.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int open(const char ⋆deviceName, int flags);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>const char
- *deviceName</para>
-</entry><entry
- align="char">
-<para>Name of specific video device.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int flags</para>
-</entry><entry
- align="char">
-<para>A bit-wise OR of the following flags:</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_RDONLY read-only access</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_RDWR read/write access</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>O_NONBLOCK open in non-blocking mode</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>(blocking mode is the default)</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>ENODEV</para>
-</entry><entry
- align="char">
-<para>Device driver not loaded/available.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBUSY</para>
-</entry><entry
- align="char">
-<para>Device or resource busy.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid argument.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section>
-<section id="video_fclose">
-<title>close()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call closes a previously opened video device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int close(int fd);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section>
-<section id="video_fwrite">
-<title>write()</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This system call can only be used if VIDEO_SOURCE_MEMORY is selected
- in the ioctl call VIDEO_SELECT_SOURCE. The data provided shall be in
- PES format, unless the capability allows other formats. If O_NONBLOCK is
- not specified the function will block until buffer space is available. The amount
- of data to be transferred is implied by count.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>size_t write(int fd, const void ⋆buf, size_t count);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>void *buf</para>
-</entry><entry
- align="char">
-<para>Pointer to the buffer containing the PES data.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>size_t count</para>
-</entry><entry
- align="char">
-<para>Size of buf.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EPERM</para>
-</entry><entry
- align="char">
-<para>Mode VIDEO_SOURCE_MEMORY not selected.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>ENOMEM</para>
-</entry><entry
- align="char">
-<para>Attempted to write more data than the internal buffer can
- hold.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_STOP</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Video Device to stop playing the current stream.
- Depending on the input parameter, the screen can be blanked out or displaying
- the last decoded frame.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = VIDEO_STOP, boolean
- mode);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_STOP for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>Boolean mode</para>
-</entry><entry
- align="char">
-<para>Indicates how the screen shall be handled.</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>TRUE: Blank screen when stop.</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>FALSE: Show last decoded frame.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error, possibly in the communication with the
- DVB subsystem.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_PLAY</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Video Device to start playing a video stream from the
- selected source.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = VIDEO_PLAY);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_PLAY for this command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error, possibly in the communication with the
- DVB subsystem.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_FREEZE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call suspends the live video stream being played. Decoding
- and playing are frozen. It is then possible to restart the decoding
- and playing process of the video stream using the VIDEO_CONTINUE
- command. If VIDEO_SOURCE_MEMORY is selected in the ioctl call
- VIDEO_SELECT_SOURCE, the DVB subsystem will not decode any more
- data until the ioctl call VIDEO_CONTINUE or VIDEO_PLAY is performed.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = VIDEO_FREEZE);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_FREEZE for this command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error, possibly in the communication with the
- DVB subsystem.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_CONTINUE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call restarts decoding and playing processes of the video stream
- which was played before a call to VIDEO_FREEZE was made.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = VIDEO_CONTINUE);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_CONTINUE for this command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error, possibly in the communication with the
- DVB subsystem.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_SELECT_SOURCE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call informs the video device which source shall be used for the input
- data. The possible sources are demux or memory. If memory is selected, the
- data is fed to the video device through the write command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = VIDEO_SELECT_SOURCE,
- video_stream_source_t source);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_SELECT_SOURCE for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>video_stream_source_t
- source</para>
-</entry><entry
- align="char">
-<para>Indicates which source shall be used for the Video stream.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error, possibly in the communication with the
- DVB subsystem.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_SET_BLANK</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Video Device to blank out the picture.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = VIDEO_SET_BLANK, boolean
- mode);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_SET_BLANK for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>boolean mode</para>
-</entry><entry
- align="char">
-<para>TRUE: Blank screen when stop.</para>
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>FALSE: Show last decoded frame.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error, possibly in the communication with the
- DVB subsystem.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Illegal input parameter</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_GET_STATUS</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Video Device to return the current status of the device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para> int ioctl(fd, int request = VIDEO_GET_STATUS, struct
- video_status ⋆status);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_GET_STATUS for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct video_status
- *status</para>
-</entry><entry
- align="char">
-<para>Returns the current status of the Video Device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error, possibly in the communication with the
- DVB subsystem.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>status points to invalid address</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_GET_EVENT</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call returns an event of type video_event if available. If an event is
- not available, the behavior depends on whether the device is in blocking or
- non-blocking mode. In the latter case, the call fails immediately with errno
- set to EWOULDBLOCK. In the former case, the call blocks until an event
- becomes available. The standard Linux poll() and/or select() system calls can
- be used with the device file descriptor to watch for new events. For select(),
- the file descriptor should be included in the exceptfds argument, and for
- poll(), POLLPRI should be specified as the wake-up condition. Read-only
- permissions are sufficient for this ioctl call.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para> int ioctl(fd, int request = VIDEO_GET_EVENT, struct
- video_event ⋆ev);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_GET_EVENT for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct video_event
- *ev</para>
-</entry><entry
- align="char">
-<para>Points to the location where the event, if any, is to be
- stored.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>ev points to invalid address</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EWOULDBLOCK</para>
-</entry><entry
- align="char">
-<para>There is no event pending, and the device is in
- non-blocking mode.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EOVERFLOW</para>
-</entry><entry
- align="char">
-</entry>
- </row><row><entry
- align="char">
-</entry><entry
- align="char">
-<para>Overflow in event queue - one or more events were lost.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_SET_DISPLAY_FORMAT</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Video Device to select the video format to be applied
- by the MPEG chip on the video.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para> int ioctl(fd, int request =
- VIDEO_SET_DISPLAY_FORMAT, video_display_format_t
- format);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_SET_DISPLAY_FORMAT for this
- command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>video_display_format_t
- format</para>
-</entry><entry
- align="char">
-<para>Selects the video format to be used.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Illegal parameter format.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_STILLPICTURE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Video Device to display a still picture (I-frame). The
- input data shall contain an I-frame. If the pointer is NULL, then the current
- displayed still picture is blanked.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = VIDEO_STILLPICTURE,
- struct video_still_picture ⋆sp);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_STILLPICTURE for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct
- video_still_picture
- *sp</para>
-</entry><entry
- align="char">
-<para>Pointer to a location where an I-frame and size is stored.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>sp points to an invalid iframe.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_FAST_FORWARD</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the Video Device to skip decoding of N number of I-frames.
- This call can only be used if VIDEO_SOURCE_MEMORY is selected.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = VIDEO_FAST_FORWARD, int
- nFrames);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_FAST_FORWARD for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int nFrames</para>
-</entry><entry
- align="char">
-<para>The number of frames to skip.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EPERM</para>
-</entry><entry
- align="char">
-<para>Mode VIDEO_SOURCE_MEMORY not selected.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Illegal parameter format.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_SLOWMOTION</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the video device to repeat decoding frames N number of
- times. This call can only be used if VIDEO_SOURCE_MEMORY is selected.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = VIDEO_SLOWMOTION, int
- nFrames);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_SLOWMOTION for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int nFrames</para>
-</entry><entry
- align="char">
-<para>The number of times to repeat each frame.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EPERM</para>
-</entry><entry
- align="char">
-<para>Mode VIDEO_SOURCE_MEMORY not selected.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Illegal parameter format.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_GET_CAPABILITIES</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call asks the video device about its decoding capabilities. On success
- it returns and integer which has bits set according to the defines in section ??.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = VIDEO_GET_CAPABILITIES,
- unsigned int ⋆cap);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_GET_CAPABILITIES for this
- command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>unsigned int *cap</para>
-</entry><entry
- align="char">
-<para>Pointer to a location where to store the capability
- information.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>cap points to an invalid iframe.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_SET_ID</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl selects which sub-stream is to be decoded if a program or system
- stream is sent to the video device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(int fd, int request = VIDEO_SET_ID, int
- id);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_SET_ID for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int id</para>
-</entry><entry
- align="char">
-<para>video sub-stream id</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINTERNAL</para>
-</entry><entry
- align="char">
-<para>Internal error.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>Invalid sub-stream id.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_CLEAR_BUFFER</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call clears all video buffers in the driver and in the decoder hardware.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = VIDEO_CLEAR_BUFFER);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_CLEAR_BUFFER for this command.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_SET_STREAMTYPE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl tells the driver which kind of stream to expect being written to it. If
- this call is not used the default of video PES is used. Some drivers might not
- support this call and always expect PES.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>int ioctl(fd, int request = VIDEO_SET_STREAMTYPE,
- int type);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_SET_STREAMTYPE for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int type</para>
-</entry><entry
- align="char">
-<para>stream type</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>type is not a valid or supported stream type.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_SET_FORMAT</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl sets the screen format (aspect ratio) of the connected output device
- (TV) so that the output of the decoder can be adjusted accordingly.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para> int ioctl(fd, int request = VIDEO_SET_FORMAT,
- video_format_t format);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_SET_FORMAT for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>video_format_t
- format</para>
-</entry><entry
- align="char">
-<para>video format of TV as defined in section ??.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>format is not a valid video format.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_SET_SYSTEM</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl sets the television output format. The format (see section ??) may
- vary from the color format of the displayed MPEG stream. If the hardware is
- not able to display the requested format the call will return an error.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para> int ioctl(fd, int request = VIDEO_SET_SYSTEM ,
- video_system_t system);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_SET_FORMAT for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>video_system_t
- system</para>
-</entry><entry
- align="char">
-<para>video system of TV output.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>system is not a valid or supported video system.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_SET_HIGHLIGHT</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl sets the SPU highlight information for the menu access of a DVD.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para> int ioctl(fd, int request = VIDEO_SET_HIGHLIGHT
- ,video_highlight_t ⋆vhilite)</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_SET_HIGHLIGHT for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>video_highlight_t
- *vhilite</para>
-</entry><entry
- align="char">
-<para>SPU Highlight information according to section ??.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>input is not a valid highlight setting.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_SET_SPU</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl activates or deactivates SPU decoding in a DVD input stream. It can
- only be used, if the driver is able to handle a DVD stream.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para> int ioctl(fd, int request = VIDEO_SET_SPU ,
- video_spu_t ⋆spu)</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_SET_SPU for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>video_spu_t *spu</para>
-</entry><entry
- align="char">
-<para>SPU decoding (de)activation and subid setting according
- to section ??.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>input is not a valid spu setting or driver cannot handle
- SPU.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_SET_SPU_PALETTE</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl sets the SPU color palette.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para> int ioctl(fd, int request = VIDEO_SET_SPU_PALETTE
- ,video_spu_palette_t ⋆palette )</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_SET_SPU_PALETTE for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>video_spu_palette_t
- *palette</para>
-</entry><entry
- align="char">
-<para>SPU palette according to section ??.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>input is not a valid palette or driver doesn’t handle SPU.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_GET_NAVI</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl returns navigational information from the DVD stream. This is
- especially needed if an encoded stream has to be decoded by the hardware.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para> int ioctl(fd, int request = VIDEO_GET_NAVI ,
- video_navi_pack_t ⋆navipack)</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_GET_NAVI for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>video_navi_pack_t
- *navipack</para>
-</entry><entry
- align="char">
-<para>PCI or DSI pack (private stream 2) according to section
- ??.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EFAULT</para>
-</entry><entry
- align="char">
-<para>driver is not able to return navigational information</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-
-</section><section
-role="subsection"><title>VIDEO_SET_ATTRIBUTES</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl is intended for DVD playback and allows you to set certain
- information about the stream. Some hardware may not need this information,
- but the call also tells the hardware to prepare for DVD playback.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para> int ioctl(fd, int request = VIDEO_SET_ATTRIBUTE
- ,video_attributes_t vattr)</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals VIDEO_SET_ATTRIBUTE for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>video_attributes_t
- vattr</para>
-</entry><entry
- align="char">
-<para>video attributes according to section ??.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>ERRORS
-</para>
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>EBADF</para>
-</entry><entry
- align="char">
-<para>fd is not a valid open file descriptor</para>
-</entry>
- </row><row><entry
- align="char">
-<para>EINVAL</para>
-</entry><entry
- align="char">
-<para>input is not a valid attribute setting.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
- </section></section>
diff --git a/Documentation/DocBook/media-entities.tmpl b/Documentation/DocBook/media-entities.tmpl
deleted file mode 100644
index e5fe094..0000000
--- a/Documentation/DocBook/media-entities.tmpl
+++ /dev/null
@@ -1,464 +0,0 @@
-<!-- Generated file! Do not edit. -->
-
-<!-- Functions -->
-<!ENTITY func-close "<link linkend='func-close'><function>close()</function></link>">
-<!ENTITY func-ioctl "<link linkend='func-ioctl'><function>ioctl()</function></link>">
-<!ENTITY func-mmap "<link linkend='func-mmap'><function>mmap()</function></link>">
-<!ENTITY func-munmap "<link linkend='func-munmap'><function>munmap()</function></link>">
-<!ENTITY func-open "<link linkend='func-open'><function>open()</function></link>">
-<!ENTITY func-poll "<link linkend='func-poll'><function>poll()</function></link>">
-<!ENTITY func-read "<link linkend='func-read'><function>read()</function></link>">
-<!ENTITY func-select "<link linkend='func-select'><function>select()</function></link>">
-<!ENTITY func-write "<link linkend='func-write'><function>write()</function></link>">
-
-<!ENTITY media-func-close "<link linkend='media-func-close'><function>close()</function></link>">
-<!ENTITY media-func-ioctl "<link linkend='media-func-ioctl'><function>ioctl()</function></link>">
-<!ENTITY media-func-open "<link linkend='media-func-open'><function>open()</function></link>">
-
-<!-- Ioctls -->
-<!ENTITY VIDIOC-CROPCAP "<link linkend='vidioc-cropcap'><constant>VIDIOC_CROPCAP</constant></link>">
-<!ENTITY VIDIOC-DBG-G-CHIP-IDENT "<link linkend='vidioc-dbg-g-chip-ident'><constant>VIDIOC_DBG_G_CHIP_IDENT</constant></link>">
-<!ENTITY VIDIOC-DBG-G-REGISTER "<link linkend='vidioc-dbg-g-register'><constant>VIDIOC_DBG_G_REGISTER</constant></link>">
-<!ENTITY VIDIOC-DBG-S-REGISTER "<link linkend='vidioc-dbg-g-register'><constant>VIDIOC_DBG_S_REGISTER</constant></link>">
-<!ENTITY VIDIOC-DQBUF "<link linkend='vidioc-qbuf'><constant>VIDIOC_DQBUF</constant></link>">
-<!ENTITY VIDIOC-DQEVENT "<link linkend='vidioc-dqevent'><constant>VIDIOC_DQEVENT</constant></link>">
-<!ENTITY VIDIOC-ENCODER-CMD "<link linkend='vidioc-encoder-cmd'><constant>VIDIOC_ENCODER_CMD</constant></link>">
-<!ENTITY VIDIOC-ENUMAUDIO "<link linkend='vidioc-enumaudio'><constant>VIDIOC_ENUMAUDIO</constant></link>">
-<!ENTITY VIDIOC-ENUMAUDOUT "<link linkend='vidioc-enumaudioout'><constant>VIDIOC_ENUMAUDOUT</constant></link>">
-<!ENTITY VIDIOC-ENUMINPUT "<link linkend='vidioc-enuminput'><constant>VIDIOC_ENUMINPUT</constant></link>">
-<!ENTITY VIDIOC-ENUMOUTPUT "<link linkend='vidioc-enumoutput'><constant>VIDIOC_ENUMOUTPUT</constant></link>">
-<!ENTITY VIDIOC-ENUMSTD "<link linkend='vidioc-enumstd'><constant>VIDIOC_ENUMSTD</constant></link>">
-<!ENTITY VIDIOC-ENUM-DV-PRESETS "<link linkend='vidioc-enum-dv-presets'><constant>VIDIOC_ENUM_DV_PRESETS</constant></link>">
-<!ENTITY VIDIOC-ENUM-FMT "<link linkend='vidioc-enum-fmt'><constant>VIDIOC_ENUM_FMT</constant></link>">
-<!ENTITY VIDIOC-ENUM-FRAMEINTERVALS "<link linkend='vidioc-enum-frameintervals'><constant>VIDIOC_ENUM_FRAMEINTERVALS</constant></link>">
-<!ENTITY VIDIOC-ENUM-FRAMESIZES "<link linkend='vidioc-enum-framesizes'><constant>VIDIOC_ENUM_FRAMESIZES</constant></link>">
-<!ENTITY VIDIOC-G-AUDIO "<link linkend='vidioc-g-audio'><constant>VIDIOC_G_AUDIO</constant></link>">
-<!ENTITY VIDIOC-G-AUDOUT "<link linkend='vidioc-g-audioout'><constant>VIDIOC_G_AUDOUT</constant></link>">
-<!ENTITY VIDIOC-G-CROP "<link linkend='vidioc-g-crop'><constant>VIDIOC_G_CROP</constant></link>">
-<!ENTITY VIDIOC-G-CTRL "<link linkend='vidioc-g-ctrl'><constant>VIDIOC_G_CTRL</constant></link>">
-<!ENTITY VIDIOC-G-DV-PRESET "<link linkend='vidioc-g-dv-preset'><constant>VIDIOC_G_DV_PRESET</constant></link>">
-<!ENTITY VIDIOC-G-DV-TIMINGS "<link linkend='vidioc-g-dv-timings'><constant>VIDIOC_G_DV_TIMINGS</constant></link>">
-<!ENTITY VIDIOC-G-ENC-INDEX "<link linkend='vidioc-g-enc-index'><constant>VIDIOC_G_ENC_INDEX</constant></link>">
-<!ENTITY VIDIOC-G-EXT-CTRLS "<link linkend='vidioc-g-ext-ctrls'><constant>VIDIOC_G_EXT_CTRLS</constant></link>">
-<!ENTITY VIDIOC-G-FBUF "<link linkend='vidioc-g-fbuf'><constant>VIDIOC_G_FBUF</constant></link>">
-<!ENTITY VIDIOC-G-FMT "<link linkend='vidioc-g-fmt'><constant>VIDIOC_G_FMT</constant></link>">
-<!ENTITY VIDIOC-G-FREQUENCY "<link linkend='vidioc-g-frequency'><constant>VIDIOC_G_FREQUENCY</constant></link>">
-<!ENTITY VIDIOC-G-INPUT "<link linkend='vidioc-g-input'><constant>VIDIOC_G_INPUT</constant></link>">
-<!ENTITY VIDIOC-G-JPEGCOMP "<link linkend='vidioc-g-jpegcomp'><constant>VIDIOC_G_JPEGCOMP</constant></link>">
-<!ENTITY VIDIOC-G-MPEGCOMP "<link linkend=''><constant>VIDIOC_G_MPEGCOMP</constant></link>">
-<!ENTITY VIDIOC-G-MODULATOR "<link linkend='vidioc-g-modulator'><constant>VIDIOC_G_MODULATOR</constant></link>">
-<!ENTITY VIDIOC-G-OUTPUT "<link linkend='vidioc-g-output'><constant>VIDIOC_G_OUTPUT</constant></link>">
-<!ENTITY VIDIOC-G-PARM "<link linkend='vidioc-g-parm'><constant>VIDIOC_G_PARM</constant></link>">
-<!ENTITY VIDIOC-G-PRIORITY "<link linkend='vidioc-g-priority'><constant>VIDIOC_G_PRIORITY</constant></link>">
-<!ENTITY VIDIOC-G-SLICED-VBI-CAP "<link linkend='vidioc-g-sliced-vbi-cap'><constant>VIDIOC_G_SLICED_VBI_CAP</constant></link>">
-<!ENTITY VIDIOC-G-STD "<link linkend='vidioc-g-std'><constant>VIDIOC_G_STD</constant></link>">
-<!ENTITY VIDIOC-G-TUNER "<link linkend='vidioc-g-tuner'><constant>VIDIOC_G_TUNER</constant></link>">
-<!ENTITY VIDIOC-LOG-STATUS "<link linkend='vidioc-log-status'><constant>VIDIOC_LOG_STATUS</constant></link>">
-<!ENTITY VIDIOC-OVERLAY "<link linkend='vidioc-overlay'><constant>VIDIOC_OVERLAY</constant></link>">
-<!ENTITY VIDIOC-QBUF "<link linkend='vidioc-qbuf'><constant>VIDIOC_QBUF</constant></link>">
-<!ENTITY VIDIOC-QUERYBUF "<link linkend='vidioc-querybuf'><constant>VIDIOC_QUERYBUF</constant></link>">
-<!ENTITY VIDIOC-QUERYCAP "<link linkend='vidioc-querycap'><constant>VIDIOC_QUERYCAP</constant></link>">
-<!ENTITY VIDIOC-QUERYCTRL "<link linkend='vidioc-queryctrl'><constant>VIDIOC_QUERYCTRL</constant></link>">
-<!ENTITY VIDIOC-QUERYMENU "<link linkend='vidioc-queryctrl'><constant>VIDIOC_QUERYMENU</constant></link>">
-<!ENTITY VIDIOC-QUERYSTD "<link linkend='vidioc-querystd'><constant>VIDIOC_QUERYSTD</constant></link>">
-<!ENTITY VIDIOC-QUERY-DV-PRESET "<link linkend='vidioc-query-dv-preset'><constant>VIDIOC_QUERY_DV_PRESET</constant></link>">
-<!ENTITY VIDIOC-REQBUFS "<link linkend='vidioc-reqbufs'><constant>VIDIOC_REQBUFS</constant></link>">
-<!ENTITY VIDIOC-STREAMOFF "<link linkend='vidioc-streamon'><constant>VIDIOC_STREAMOFF</constant></link>">
-<!ENTITY VIDIOC-STREAMON "<link linkend='vidioc-streamon'><constant>VIDIOC_STREAMON</constant></link>">
-<!ENTITY VIDIOC-SUBSCRIBE-EVENT "<link linkend='vidioc-subscribe-event'><constant>VIDIOC_SUBSCRIBE_EVENT</constant></link>">
-<!ENTITY VIDIOC-S-AUDIO "<link linkend='vidioc-g-audio'><constant>VIDIOC_S_AUDIO</constant></link>">
-<!ENTITY VIDIOC-S-AUDOUT "<link linkend='vidioc-g-audioout'><constant>VIDIOC_S_AUDOUT</constant></link>">
-<!ENTITY VIDIOC-S-CROP "<link linkend='vidioc-g-crop'><constant>VIDIOC_S_CROP</constant></link>">
-<!ENTITY VIDIOC-S-CTRL "<link linkend='vidioc-g-ctrl'><constant>VIDIOC_S_CTRL</constant></link>">
-<!ENTITY VIDIOC-S-DV-PRESET "<link linkend='vidioc-g-dv-preset'><constant>VIDIOC_S_DV_PRESET</constant></link>">
-<!ENTITY VIDIOC-S-DV-TIMINGS "<link linkend='vidioc-g-dv-timings'><constant>VIDIOC_S_DV_TIMINGS</constant></link>">
-<!ENTITY VIDIOC-S-EXT-CTRLS "<link linkend='vidioc-g-ext-ctrls'><constant>VIDIOC_S_EXT_CTRLS</constant></link>">
-<!ENTITY VIDIOC-S-FBUF "<link linkend='vidioc-g-fbuf'><constant>VIDIOC_S_FBUF</constant></link>">
-<!ENTITY VIDIOC-S-FMT "<link linkend='vidioc-g-fmt'><constant>VIDIOC_S_FMT</constant></link>">
-<!ENTITY VIDIOC-S-FREQUENCY "<link linkend='vidioc-g-frequency'><constant>VIDIOC_S_FREQUENCY</constant></link>">
-<!ENTITY VIDIOC-S-HW-FREQ-SEEK "<link linkend='vidioc-s-hw-freq-seek'><constant>VIDIOC_S_HW_FREQ_SEEK</constant></link>">
-<!ENTITY VIDIOC-S-INPUT "<link linkend='vidioc-g-input'><constant>VIDIOC_S_INPUT</constant></link>">
-<!ENTITY VIDIOC-S-JPEGCOMP "<link linkend='vidioc-g-jpegcomp'><constant>VIDIOC_S_JPEGCOMP</constant></link>">
-<!ENTITY VIDIOC-S-MPEGCOMP "<link linkend=''><constant>VIDIOC_S_MPEGCOMP</constant></link>">
-<!ENTITY VIDIOC-S-MODULATOR "<link linkend='vidioc-g-modulator'><constant>VIDIOC_S_MODULATOR</constant></link>">
-<!ENTITY VIDIOC-S-OUTPUT "<link linkend='vidioc-g-output'><constant>VIDIOC_S_OUTPUT</constant></link>">
-<!ENTITY VIDIOC-S-PARM "<link linkend='vidioc-g-parm'><constant>VIDIOC_S_PARM</constant></link>">
-<!ENTITY VIDIOC-S-PRIORITY "<link linkend='vidioc-g-priority'><constant>VIDIOC_S_PRIORITY</constant></link>">
-<!ENTITY VIDIOC-S-STD "<link linkend='vidioc-g-std'><constant>VIDIOC_S_STD</constant></link>">
-<!ENTITY VIDIOC-S-TUNER "<link linkend='vidioc-g-tuner'><constant>VIDIOC_S_TUNER</constant></link>">
-<!ENTITY VIDIOC-SUBDEV-ENUM-FRAME-SIZE "<link linkend='vidioc-subdev-enum-frame-size'><constant>VIDIOC_SUBDEV_ENUM_FRAME_SIZE</constant></link>">
-<!ENTITY VIDIOC-SUBDEV-ENUM-MBUS-CODE "<link linkend='vidioc-subdev-enum-mbus-code'><constant>VIDIOC_SUBDEV_ENUM_MBUS_CODE</constant></link>">
-<!ENTITY VIDIOC-SUBDEV-G-CROP "<link linkend='vidioc-subdev-g-crop'><constant>VIDIOC_SUBDEV_G_CROP</constant></link>">
-<!ENTITY VIDIOC-SUBDEV-G-FMT "<link linkend='vidioc-subdev-g-fmt'><constant>VIDIOC_SUBDEV_G_FMT</constant></link>">
-<!ENTITY VIDIOC-SUBDEV-G-FRAME-INTERVAL "<link linkend='vidioc-subdev-g-frame-interval'><constant>VIDIOC_SUBDEV_G_FRAME_INTERVAL</constant></link>">
-<!ENTITY VIDIOC-SUBDEV-S-CROP "<link linkend='vidioc-subdev-g-crop'><constant>VIDIOC_SUBDEV_S_CROP</constant></link>">
-<!ENTITY VIDIOC-SUBDEV-S-FMT "<link linkend='vidioc-subdev-g-fmt'><constant>VIDIOC_SUBDEV_S_FMT</constant></link>">
-<!ENTITY VIDIOC-SUBDEV-S-FRAME-INTERVAL "<link linkend='vidioc-subdev-g-frame-interval'><constant>VIDIOC_SUBDEV_S_FRAME_INTERVAL</constant></link>">
-<!ENTITY VIDIOC-TRY-ENCODER-CMD "<link linkend='vidioc-encoder-cmd'><constant>VIDIOC_TRY_ENCODER_CMD</constant></link>">
-<!ENTITY VIDIOC-TRY-EXT-CTRLS "<link linkend='vidioc-g-ext-ctrls'><constant>VIDIOC_TRY_EXT_CTRLS</constant></link>">
-<!ENTITY VIDIOC-TRY-FMT "<link linkend='vidioc-g-fmt'><constant>VIDIOC_TRY_FMT</constant></link>">
-<!ENTITY VIDIOC-UNSUBSCRIBE-EVENT "<link linkend='vidioc-subscribe-event'><constant>VIDIOC_UNSUBSCRIBE_EVENT</constant></link>">
-
-<!ENTITY MEDIA-IOC-DEVICE-INFO "<link linkend='media-ioc-device-info'><constant>MEDIA_IOC_DEVICE_INFO</constant></link>">
-<!ENTITY MEDIA-IOC-ENUM-ENTITIES "<link linkend='media-ioc-enum-entities'><constant>MEDIA_IOC_ENUM_ENTITIES</constant></link>">
-<!ENTITY MEDIA-IOC-ENUM-LINKS "<link linkend='media-ioc-enum-links'><constant>MEDIA_IOC_ENUM_LINKS</constant></link>">
-<!ENTITY MEDIA-IOC-SETUP-LINK "<link linkend='media-ioc-setup-link'><constant>MEDIA_IOC_SETUP_LINK</constant></link>">
-
-<!-- Types -->
-<!ENTITY v4l2-std-id "<link linkend='v4l2-std-id'>v4l2_std_id</link>">
-
-<!-- Enums -->
-<!ENTITY v4l2-buf-type "enum <link linkend='v4l2-buf-type'>v4l2_buf_type</link>">
-<!ENTITY v4l2-colorspace "enum <link linkend='v4l2-colorspace'>v4l2_colorspace</link>">
-<!ENTITY v4l2-ctrl-type "enum <link linkend='v4l2-ctrl-type'>v4l2_ctrl_type</link>">
-<!ENTITY v4l2-exposure-auto-type "enum <link linkend='v4l2-exposure-auto-type'>v4l2_exposure_auto_type</link>">
-<!ENTITY v4l2-field "enum <link linkend='v4l2-field'>v4l2_field</link>">
-<!ENTITY v4l2-frmivaltypes "enum <link linkend='v4l2-frmivaltypes'>v4l2_frmivaltypes</link>">
-<!ENTITY v4l2-frmsizetypes "enum <link linkend='v4l2-frmsizetypes'>v4l2_frmsizetypes</link>">
-<!ENTITY v4l2-mbus-pixelcode "enum <link linkend='v4l2-mbus-pixelcode'>v4l2_mbus_pixelcode</link>">
-<!ENTITY v4l2-memory "enum <link linkend='v4l2-memory'>v4l2_memory</link>">
-<!ENTITY v4l2-mpeg-audio-ac3-bitrate "enum <link linkend='v4l2-mpeg-audio-ac3-bitrate'>v4l2_mpeg_audio_ac3_bitrate</link>">
-<!ENTITY v4l2-mpeg-audio-crc "enum <link linkend='v4l2-mpeg-audio-crc'>v4l2_mpeg_audio_crc</link>">
-<!ENTITY v4l2-mpeg-audio-emphasis "enum <link linkend='v4l2-mpeg-audio-emphasis'>v4l2_mpeg_audio_emphasis</link>">
-<!ENTITY v4l2-mpeg-audio-encoding "enum <link linkend='v4l2-mpeg-audio-encoding'>v4l2_mpeg_audio_encoding</link>">
-<!ENTITY v4l2-mpeg-audio-l1-bitrate "enum <link linkend='v4l2-mpeg-audio-l1-bitrate'>v4l2_mpeg_audio_l1_bitrate</link>">
-<!ENTITY v4l2-mpeg-audio-l2-bitrate "enum <link linkend='v4l2-mpeg-audio-l2-bitrate'>v4l2_mpeg_audio_l2_bitrate</link>">
-<!ENTITY v4l2-mpeg-audio-l3-bitrate "enum <link linkend='v4l2-mpeg-audio-l3-bitrate'>v4l2_mpeg_audio_l3_bitrate</link>">
-<!ENTITY v4l2-mpeg-audio-mode "enum <link linkend='v4l2-mpeg-audio-mode'>v4l2_mpeg_audio_mode</link>">
-<!ENTITY v4l2-mpeg-audio-mode-extension "enum <link linkend='v4l2-mpeg-audio-mode-extension'>v4l2_mpeg_audio_mode_extension</link>">
-<!ENTITY v4l2-mpeg-audio-sampling-freq "enum <link linkend='v4l2-mpeg-audio-sampling-freq'>v4l2_mpeg_audio_sampling_freq</link>">
-<!ENTITY chroma-spatial-filter-type "enum <link linkend='chroma-spatial-filter-type'>v4l2_mpeg_cx2341x_video_chroma_spatial_filter_type</link>">
-<!ENTITY luma-spatial-filter-type "enum <link linkend='luma-spatial-filter-type'>v4l2_mpeg_cx2341x_video_luma_spatial_filter_type</link>">
-<!ENTITY v4l2-mpeg-cx2341x-video-median-filter-type "enum <link linkend='v4l2-mpeg-cx2341x-video-median-filter-type'>v4l2_mpeg_cx2341x_video_median_filter_type</link>">
-<!ENTITY v4l2-mpeg-cx2341x-video-spatial-filter-mode "enum <link linkend='v4l2-mpeg-cx2341x-video-spatial-filter-mode'>v4l2_mpeg_cx2341x_video_spatial_filter_mode</link>">
-<!ENTITY v4l2-mpeg-cx2341x-video-temporal-filter-mode "enum <link linkend='v4l2-mpeg-cx2341x-video-temporal-filter-mode'>v4l2_mpeg_cx2341x_video_temporal_filter_mode</link>">
-<!ENTITY v4l2-mpeg-stream-type "enum <link linkend='v4l2-mpeg-stream-type'>v4l2_mpeg_stream_type</link>">
-<!ENTITY v4l2-mpeg-stream-vbi-fmt "enum <link linkend='v4l2-mpeg-stream-vbi-fmt'>v4l2_mpeg_stream_vbi_fmt</link>">
-<!ENTITY v4l2-mpeg-video-aspect "enum <link linkend='v4l2-mpeg-video-aspect'>v4l2_mpeg_video_aspect</link>">
-<!ENTITY v4l2-mpeg-video-bitrate-mode "enum <link linkend='v4l2-mpeg-video-bitrate-mode'>v4l2_mpeg_video_bitrate_mode</link>">
-<!ENTITY v4l2-mpeg-video-encoding "enum <link linkend='v4l2-mpeg-video-encoding'>v4l2_mpeg_video_encoding</link>">
-<!ENTITY v4l2-power-line-frequency "enum <link linkend='v4l2-power-line-frequency'>v4l2_power_line_frequency</link>">
-<!ENTITY v4l2-priority "enum <link linkend='v4l2-priority'>v4l2_priority</link>">
-<!ENTITY v4l2-subdev-format-whence "enum <link linkend='v4l2-subdev-format-whence'>v4l2_subdev_format_whence</link>">
-<!ENTITY v4l2-tuner-type "enum <link linkend='v4l2-tuner-type'>v4l2_tuner_type</link>">
-<!ENTITY v4l2-preemphasis "enum <link linkend='v4l2-preemphasis'>v4l2_preemphasis</link>">
-
-<!-- Structures -->
-<!ENTITY v4l2-audio "struct <link linkend='v4l2-audio'>v4l2_audio</link>">
-<!ENTITY v4l2-audioout "struct <link linkend='v4l2-audioout'>v4l2_audioout</link>">
-<!ENTITY v4l2-bt-timings "struct <link linkend='v4l2-bt-timings'>v4l2_bt_timings</link>">
-<!ENTITY v4l2-buffer "struct <link linkend='v4l2-buffer'>v4l2_buffer</link>">
-<!ENTITY v4l2-plane "struct <link linkend='v4l2-plane'>v4l2_plane</link>">
-<!ENTITY v4l2-capability "struct <link linkend='v4l2-capability'>v4l2_capability</link>">
-<!ENTITY v4l2-captureparm "struct <link linkend='v4l2-captureparm'>v4l2_captureparm</link>">
-<!ENTITY v4l2-clip "struct <link linkend='v4l2-clip'>v4l2_clip</link>">
-<!ENTITY v4l2-control "struct <link linkend='v4l2-control'>v4l2_control</link>">
-<!ENTITY v4l2-crop "struct <link linkend='v4l2-crop'>v4l2_crop</link>">
-<!ENTITY v4l2-cropcap "struct <link linkend='v4l2-cropcap'>v4l2_cropcap</link>">
-<!ENTITY v4l2-dbg-chip-ident "struct <link linkend='v4l2-dbg-chip-ident'>v4l2_dbg_chip_ident</link>">
-<!ENTITY v4l2-dbg-match "struct <link linkend='v4l2-dbg-match'>v4l2_dbg_match</link>">
-<!ENTITY v4l2-dbg-register "struct <link linkend='v4l2-dbg-register'>v4l2_dbg_register</link>">
-<!ENTITY v4l2-dv-enum-preset "struct <link linkend='v4l2-dv-enum-preset'>v4l2_dv_enum_preset</link>">
-<!ENTITY v4l2-dv-preset "struct <link linkend='v4l2-dv-preset'>v4l2_dv_preset</link>">
-<!ENTITY v4l2-dv-timings "struct <link linkend='v4l2-dv-timings'>v4l2_dv_timings</link>">
-<!ENTITY v4l2-enc-idx "struct <link linkend='v4l2-enc-idx'>v4l2_enc_idx</link>">
-<!ENTITY v4l2-enc-idx-entry "struct <link linkend='v4l2-enc-idx-entry'>v4l2_enc_idx_entry</link>">
-<!ENTITY v4l2-encoder-cmd "struct <link linkend='v4l2-encoder-cmd'>v4l2_encoder_cmd</link>">
-<!ENTITY v4l2-event "struct <link linkend='v4l2-event'>v4l2_event</link>">
-<!ENTITY v4l2-event-subscription "struct <link linkend='v4l2-event-subscription'>v4l2_event_subscription</link>">
-<!ENTITY v4l2-event-vsync "struct <link linkend='v4l2-event-vsync'>v4l2_event_vsync</link>">
-<!ENTITY v4l2-ext-control "struct <link linkend='v4l2-ext-control'>v4l2_ext_control</link>">
-<!ENTITY v4l2-ext-controls "struct <link linkend='v4l2-ext-controls'>v4l2_ext_controls</link>">
-<!ENTITY v4l2-fmtdesc "struct <link linkend='v4l2-fmtdesc'>v4l2_fmtdesc</link>">
-<!ENTITY v4l2-format "struct <link linkend='v4l2-format'>v4l2_format</link>">
-<!ENTITY v4l2-fract "struct <link linkend='v4l2-fract'>v4l2_fract</link>">
-<!ENTITY v4l2-framebuffer "struct <link linkend='v4l2-framebuffer'>v4l2_framebuffer</link>">
-<!ENTITY v4l2-frequency "struct <link linkend='v4l2-frequency'>v4l2_frequency</link>">
-<!ENTITY v4l2-frmival-stepwise "struct <link linkend='v4l2-frmival-stepwise'>v4l2_frmival_stepwise</link>">
-<!ENTITY v4l2-frmivalenum "struct <link linkend='v4l2-frmivalenum'>v4l2_frmivalenum</link>">
-<!ENTITY v4l2-frmsize-discrete "struct <link linkend='v4l2-frmsize-discrete'>v4l2_frmsize_discrete</link>">
-<!ENTITY v4l2-frmsize-stepwise "struct <link linkend='v4l2-frmsize-stepwise'>v4l2_frmsize_stepwise</link>">
-<!ENTITY v4l2-frmsizeenum "struct <link linkend='v4l2-frmsizeenum'>v4l2_frmsizeenum</link>">
-<!ENTITY v4l2-hw-freq-seek "struct <link linkend='v4l2-hw-freq-seek'>v4l2_hw_freq_seek</link>">
-<!ENTITY v4l2-input "struct <link linkend='v4l2-input'>v4l2_input</link>">
-<!ENTITY v4l2-jpegcompression "struct <link linkend='v4l2-jpegcompression'>v4l2_jpegcompression</link>">
-<!ENTITY v4l2-mbus-framefmt "struct <link linkend='v4l2-mbus-framefmt'>v4l2_mbus_framefmt</link>">
-<!ENTITY v4l2-modulator "struct <link linkend='v4l2-modulator'>v4l2_modulator</link>">
-<!ENTITY v4l2-mpeg-vbi-fmt-ivtv "struct <link linkend='v4l2-mpeg-vbi-fmt-ivtv'>v4l2_mpeg_vbi_fmt_ivtv</link>">
-<!ENTITY v4l2-output "struct <link linkend='v4l2-output'>v4l2_output</link>">
-<!ENTITY v4l2-outputparm "struct <link linkend='v4l2-outputparm'>v4l2_outputparm</link>">
-<!ENTITY v4l2-pix-format "struct <link linkend='v4l2-pix-format'>v4l2_pix_format</link>">
-<!ENTITY v4l2-pix-format-mplane "struct <link linkend='v4l2-pix-format-mplane'>v4l2_pix_format_mplane</link>">
-<!ENTITY v4l2-plane-pix-format "struct <link linkend='v4l2-plane-pix-format'>v4l2_plane_pix_format</link>">
-<!ENTITY v4l2-queryctrl "struct <link linkend='v4l2-queryctrl'>v4l2_queryctrl</link>">
-<!ENTITY v4l2-querymenu "struct <link linkend='v4l2-querymenu'>v4l2_querymenu</link>">
-<!ENTITY v4l2-rect "struct <link linkend='v4l2-rect'>v4l2_rect</link>">
-<!ENTITY v4l2-requestbuffers "struct <link linkend='v4l2-requestbuffers'>v4l2_requestbuffers</link>">
-<!ENTITY v4l2-sliced-vbi-cap "struct <link linkend='v4l2-sliced-vbi-cap'>v4l2_sliced_vbi_cap</link>">
-<!ENTITY v4l2-sliced-vbi-data "struct <link linkend='v4l2-sliced-vbi-data'>v4l2_sliced_vbi_data</link>">
-<!ENTITY v4l2-sliced-vbi-format "struct <link linkend='v4l2-sliced-vbi-format'>v4l2_sliced_vbi_format</link>">
-<!ENTITY v4l2-subdev-frame-interval "struct <link linkend='v4l2-subdev-frame-interval'>v4l2_subdev_frame_interval</link>">
-<!ENTITY v4l2-subdev-frame-interval-enum "struct <link linkend='v4l2-subdev-frame-interval-enum'>v4l2_subdev_frame_interval_enum</link>">
-<!ENTITY v4l2-subdev-frame-size-enum "struct <link linkend='v4l2-subdev-frame-size-enum'>v4l2_subdev_frame_size_enum</link>">
-<!ENTITY v4l2-subdev-crop "struct <link linkend='v4l2-subdev-crop'>v4l2_subdev_crop</link>">
-<!ENTITY v4l2-subdev-format "struct <link linkend='v4l2-subdev-format'>v4l2_subdev_format</link>">
-<!ENTITY v4l2-subdev-mbus-code-enum "struct <link linkend='v4l2-subdev-mbus-code-enum'>v4l2_subdev_mbus_code_enum</link>">
-<!ENTITY v4l2-standard "struct <link linkend='v4l2-standard'>v4l2_standard</link>">
-<!ENTITY v4l2-streamparm "struct <link linkend='v4l2-streamparm'>v4l2_streamparm</link>">
-<!ENTITY v4l2-timecode "struct <link linkend='v4l2-timecode'>v4l2_timecode</link>">
-<!ENTITY v4l2-tuner "struct <link linkend='v4l2-tuner'>v4l2_tuner</link>">
-<!ENTITY v4l2-vbi-format "struct <link linkend='v4l2-vbi-format'>v4l2_vbi_format</link>">
-<!ENTITY v4l2-window "struct <link linkend='v4l2-window'>v4l2_window</link>">
-
-<!ENTITY media-device-info "struct <link linkend='media-device-info'>media_device_info</link>">
-<!ENTITY media-entity-desc "struct <link linkend='media-entity-desc'>media_entity_desc</link>">
-<!ENTITY media-links-enum "struct <link linkend='media-links-enum'>media_links_enum</link>">
-<!ENTITY media-pad-desc "struct <link linkend='media-pad-desc'>media_pad_desc</link>">
-<!ENTITY media-link-desc "struct <link linkend='media-link-desc'>media_link_desc</link>">
-
-<!-- Error Codes -->
-<!ENTITY EACCES "<errorcode>EACCES</errorcode> error code">
-<!ENTITY EAGAIN "<errorcode>EAGAIN</errorcode> error code">
-<!ENTITY EBADF "<errorcode>EBADF</errorcode> error code">
-<!ENTITY EBUSY "<errorcode>EBUSY</errorcode> error code">
-<!ENTITY EFAULT "<errorcode>EFAULT</errorcode> error code">
-<!ENTITY EIO "<errorcode>EIO</errorcode> error code">
-<!ENTITY EINTR "<errorcode>EINTR</errorcode> error code">
-<!ENTITY EINVAL "<errorcode>EINVAL</errorcode> error code">
-<!ENTITY ENFILE "<errorcode>ENFILE</errorcode> error code">
-<!ENTITY ENOMEM "<errorcode>ENOMEM</errorcode> error code">
-<!ENTITY ENOSPC "<errorcode>ENOSPC</errorcode> error code">
-<!ENTITY ENOTTY "<errorcode>ENOTTY</errorcode> error code">
-<!ENTITY ENXIO "<errorcode>ENXIO</errorcode> error code">
-<!ENTITY EMFILE "<errorcode>EMFILE</errorcode> error code">
-<!ENTITY EPERM "<errorcode>EPERM</errorcode> error code">
-<!ENTITY EPIPE "<errorcode>EPIPE</errorcode> error code">
-<!ENTITY ERANGE "<errorcode>ERANGE</errorcode> error code">
-
-<!-- Subsections -->
-<!ENTITY sub-biblio SYSTEM "v4l/biblio.xml">
-<!ENTITY sub-common SYSTEM "v4l/common.xml">
-<!ENTITY sub-planar-apis SYSTEM "v4l/planar-apis.xml">
-<!ENTITY sub-compat SYSTEM "v4l/compat.xml">
-<!ENTITY sub-controls SYSTEM "v4l/controls.xml">
-<!ENTITY sub-dev-capture SYSTEM "v4l/dev-capture.xml">
-<!ENTITY sub-dev-codec SYSTEM "v4l/dev-codec.xml">
-<!ENTITY sub-dev-event SYSTEM "v4l/dev-event.xml">
-<!ENTITY sub-dev-effect SYSTEM "v4l/dev-effect.xml">
-<!ENTITY sub-dev-osd SYSTEM "v4l/dev-osd.xml">
-<!ENTITY sub-dev-output SYSTEM "v4l/dev-output.xml">
-<!ENTITY sub-dev-overlay SYSTEM "v4l/dev-overlay.xml">
-<!ENTITY sub-dev-radio SYSTEM "v4l/dev-radio.xml">
-<!ENTITY sub-dev-raw-vbi SYSTEM "v4l/dev-raw-vbi.xml">
-<!ENTITY sub-dev-rds SYSTEM "v4l/dev-rds.xml">
-<!ENTITY sub-dev-sliced-vbi SYSTEM "v4l/dev-sliced-vbi.xml">
-<!ENTITY sub-dev-subdev SYSTEM "v4l/dev-subdev.xml">
-<!ENTITY sub-dev-teletext SYSTEM "v4l/dev-teletext.xml">
-<!ENTITY sub-driver SYSTEM "v4l/driver.xml">
-<!ENTITY sub-libv4l SYSTEM "v4l/libv4l.xml">
-<!ENTITY sub-lirc_device_interface SYSTEM "v4l/lirc_device_interface.xml">
-<!ENTITY sub-remote_controllers SYSTEM "v4l/remote_controllers.xml">
-<!ENTITY sub-fdl-appendix SYSTEM "v4l/fdl-appendix.xml">
-<!ENTITY sub-close SYSTEM "v4l/func-close.xml">
-<!ENTITY sub-ioctl SYSTEM "v4l/func-ioctl.xml">
-<!ENTITY sub-mmap SYSTEM "v4l/func-mmap.xml">
-<!ENTITY sub-munmap SYSTEM "v4l/func-munmap.xml">
-<!ENTITY sub-open SYSTEM "v4l/func-open.xml">
-<!ENTITY sub-poll SYSTEM "v4l/func-poll.xml">
-<!ENTITY sub-read SYSTEM "v4l/func-read.xml">
-<!ENTITY sub-select SYSTEM "v4l/func-select.xml">
-<!ENTITY sub-write SYSTEM "v4l/func-write.xml">
-<!ENTITY sub-io SYSTEM "v4l/io.xml">
-<!ENTITY sub-grey SYSTEM "v4l/pixfmt-grey.xml">
-<!ENTITY sub-m420 SYSTEM "v4l/pixfmt-m420.xml">
-<!ENTITY sub-nv12 SYSTEM "v4l/pixfmt-nv12.xml">
-<!ENTITY sub-nv12m SYSTEM "v4l/pixfmt-nv12m.xml">
-<!ENTITY sub-nv12mt SYSTEM "v4l/pixfmt-nv12mt.xml">
-<!ENTITY sub-nv16 SYSTEM "v4l/pixfmt-nv16.xml">
-<!ENTITY sub-packed-rgb SYSTEM "v4l/pixfmt-packed-rgb.xml">
-<!ENTITY sub-packed-yuv SYSTEM "v4l/pixfmt-packed-yuv.xml">
-<!ENTITY sub-sbggr16 SYSTEM "v4l/pixfmt-sbggr16.xml">
-<!ENTITY sub-sbggr8 SYSTEM "v4l/pixfmt-sbggr8.xml">
-<!ENTITY sub-sgbrg8 SYSTEM "v4l/pixfmt-sgbrg8.xml">
-<!ENTITY sub-sgrbg8 SYSTEM "v4l/pixfmt-sgrbg8.xml">
-<!ENTITY sub-uyvy SYSTEM "v4l/pixfmt-uyvy.xml">
-<!ENTITY sub-vyuy SYSTEM "v4l/pixfmt-vyuy.xml">
-<!ENTITY sub-y16 SYSTEM "v4l/pixfmt-y16.xml">
-<!ENTITY sub-y41p SYSTEM "v4l/pixfmt-y41p.xml">
-<!ENTITY sub-yuv410 SYSTEM "v4l/pixfmt-yuv410.xml">
-<!ENTITY sub-yuv411p SYSTEM "v4l/pixfmt-yuv411p.xml">
-<!ENTITY sub-yuv420 SYSTEM "v4l/pixfmt-yuv420.xml">
-<!ENTITY sub-yuv420m SYSTEM "v4l/pixfmt-yuv420m.xml">
-<!ENTITY sub-yuv422p SYSTEM "v4l/pixfmt-yuv422p.xml">
-<!ENTITY sub-yuyv SYSTEM "v4l/pixfmt-yuyv.xml">
-<!ENTITY sub-yvyu SYSTEM "v4l/pixfmt-yvyu.xml">
-<!ENTITY sub-srggb10 SYSTEM "v4l/pixfmt-srggb10.xml">
-<!ENTITY sub-srggb12 SYSTEM "v4l/pixfmt-srggb12.xml">
-<!ENTITY sub-srggb8 SYSTEM "v4l/pixfmt-srggb8.xml">
-<!ENTITY sub-y10 SYSTEM "v4l/pixfmt-y10.xml">
-<!ENTITY sub-y12 SYSTEM "v4l/pixfmt-y12.xml">
-<!ENTITY sub-y10b SYSTEM "v4l/pixfmt-y10b.xml">
-<!ENTITY sub-pixfmt SYSTEM "v4l/pixfmt.xml">
-<!ENTITY sub-cropcap SYSTEM "v4l/vidioc-cropcap.xml">
-<!ENTITY sub-dbg-g-register SYSTEM "v4l/vidioc-dbg-g-register.xml">
-<!ENTITY sub-encoder-cmd SYSTEM "v4l/vidioc-encoder-cmd.xml">
-<!ENTITY sub-enum-fmt SYSTEM "v4l/vidioc-enum-fmt.xml">
-<!ENTITY sub-enum-frameintervals SYSTEM "v4l/vidioc-enum-frameintervals.xml">
-<!ENTITY sub-enum-framesizes SYSTEM "v4l/vidioc-enum-framesizes.xml">
-<!ENTITY sub-enumaudio SYSTEM "v4l/vidioc-enumaudio.xml">
-<!ENTITY sub-enumaudioout SYSTEM "v4l/vidioc-enumaudioout.xml">
-<!ENTITY sub-enuminput SYSTEM "v4l/vidioc-enuminput.xml">
-<!ENTITY sub-enumoutput SYSTEM "v4l/vidioc-enumoutput.xml">
-<!ENTITY sub-enum-dv-presets SYSTEM "v4l/vidioc-enum-dv-presets.xml">
-<!ENTITY sub-g-dv-preset SYSTEM "v4l/vidioc-g-dv-preset.xml">
-<!ENTITY sub-query-dv-preset SYSTEM "v4l/vidioc-query-dv-preset.xml">
-<!ENTITY sub-g-dv-timings SYSTEM "v4l/vidioc-g-dv-timings.xml">
-<!ENTITY sub-enumstd SYSTEM "v4l/vidioc-enumstd.xml">
-<!ENTITY sub-g-audio SYSTEM "v4l/vidioc-g-audio.xml">
-<!ENTITY sub-g-audioout SYSTEM "v4l/vidioc-g-audioout.xml">
-<!ENTITY sub-dbg-g-chip-ident SYSTEM "v4l/vidioc-dbg-g-chip-ident.xml">
-<!ENTITY sub-g-crop SYSTEM "v4l/vidioc-g-crop.xml">
-<!ENTITY sub-g-ctrl SYSTEM "v4l/vidioc-g-ctrl.xml">
-<!ENTITY sub-g-enc-index SYSTEM "v4l/vidioc-g-enc-index.xml">
-<!ENTITY sub-g-ext-ctrls SYSTEM "v4l/vidioc-g-ext-ctrls.xml">
-<!ENTITY sub-g-fbuf SYSTEM "v4l/vidioc-g-fbuf.xml">
-<!ENTITY sub-g-fmt SYSTEM "v4l/vidioc-g-fmt.xml">
-<!ENTITY sub-g-frequency SYSTEM "v4l/vidioc-g-frequency.xml">
-<!ENTITY sub-g-input SYSTEM "v4l/vidioc-g-input.xml">
-<!ENTITY sub-g-jpegcomp SYSTEM "v4l/vidioc-g-jpegcomp.xml">
-<!ENTITY sub-g-modulator SYSTEM "v4l/vidioc-g-modulator.xml">
-<!ENTITY sub-g-output SYSTEM "v4l/vidioc-g-output.xml">
-<!ENTITY sub-g-parm SYSTEM "v4l/vidioc-g-parm.xml">
-<!ENTITY sub-g-priority SYSTEM "v4l/vidioc-g-priority.xml">
-<!ENTITY sub-g-sliced-vbi-cap SYSTEM "v4l/vidioc-g-sliced-vbi-cap.xml">
-<!ENTITY sub-g-std SYSTEM "v4l/vidioc-g-std.xml">
-<!ENTITY sub-g-tuner SYSTEM "v4l/vidioc-g-tuner.xml">
-<!ENTITY sub-log-status SYSTEM "v4l/vidioc-log-status.xml">
-<!ENTITY sub-overlay SYSTEM "v4l/vidioc-overlay.xml">
-<!ENTITY sub-qbuf SYSTEM "v4l/vidioc-qbuf.xml">
-<!ENTITY sub-querybuf SYSTEM "v4l/vidioc-querybuf.xml">
-<!ENTITY sub-querycap SYSTEM "v4l/vidioc-querycap.xml">
-<!ENTITY sub-queryctrl SYSTEM "v4l/vidioc-queryctrl.xml">
-<!ENTITY sub-querystd SYSTEM "v4l/vidioc-querystd.xml">
-<!ENTITY sub-reqbufs SYSTEM "v4l/vidioc-reqbufs.xml">
-<!ENTITY sub-s-hw-freq-seek SYSTEM "v4l/vidioc-s-hw-freq-seek.xml">
-<!ENTITY sub-streamon SYSTEM "v4l/vidioc-streamon.xml">
-<!ENTITY sub-subdev-enum-frame-interval SYSTEM "v4l/vidioc-subdev-enum-frame-interval.xml">
-<!ENTITY sub-subdev-enum-frame-size SYSTEM "v4l/vidioc-subdev-enum-frame-size.xml">
-<!ENTITY sub-subdev-enum-mbus-code SYSTEM "v4l/vidioc-subdev-enum-mbus-code.xml">
-<!ENTITY sub-subdev-formats SYSTEM "v4l/subdev-formats.xml">
-<!ENTITY sub-subdev-g-crop SYSTEM "v4l/vidioc-subdev-g-crop.xml">
-<!ENTITY sub-subdev-g-fmt SYSTEM "v4l/vidioc-subdev-g-fmt.xml">
-<!ENTITY sub-subdev-g-frame-interval SYSTEM "v4l/vidioc-subdev-g-frame-interval.xml">
-<!ENTITY sub-capture-c SYSTEM "v4l/capture.c.xml">
-<!ENTITY sub-keytable-c SYSTEM "v4l/keytable.c.xml">
-<!ENTITY sub-v4l2grab-c SYSTEM "v4l/v4l2grab.c.xml">
-<!ENTITY sub-videodev2-h SYSTEM "v4l/videodev2.h.xml">
-<!ENTITY sub-v4l2 SYSTEM "v4l/v4l2.xml">
-<!ENTITY sub-dqevent SYSTEM "v4l/vidioc-dqevent.xml">
-<!ENTITY sub-subscribe-event SYSTEM "v4l/vidioc-subscribe-event.xml">
-<!ENTITY sub-intro SYSTEM "dvb/intro.xml">
-<!ENTITY sub-frontend SYSTEM "dvb/frontend.xml">
-<!ENTITY sub-dvbproperty SYSTEM "dvb/dvbproperty.xml">
-<!ENTITY sub-demux SYSTEM "dvb/demux.xml">
-<!ENTITY sub-video SYSTEM "dvb/video.xml">
-<!ENTITY sub-audio SYSTEM "dvb/audio.xml">
-<!ENTITY sub-ca SYSTEM "dvb/ca.xml">
-<!ENTITY sub-net SYSTEM "dvb/net.xml">
-<!ENTITY sub-kdapi SYSTEM "dvb/kdapi.xml">
-<!ENTITY sub-examples SYSTEM "dvb/examples.xml">
-<!ENTITY sub-frontend-h SYSTEM "dvb/frontend.h.xml">
-<!ENTITY sub-dvbapi SYSTEM "dvb/dvbapi.xml">
-<!ENTITY sub-media SYSTEM "media.xml">
-<!ENTITY sub-media-entities SYSTEM "media-entities.tmpl">
-<!ENTITY sub-media-indices SYSTEM "media-indices.tmpl">
-
-<!ENTITY sub-media-controller SYSTEM "v4l/media-controller.xml">
-<!ENTITY sub-media-func-open SYSTEM "v4l/media-func-open.xml">
-<!ENTITY sub-media-func-close SYSTEM "v4l/media-func-close.xml">
-<!ENTITY sub-media-func-ioctl SYSTEM "v4l/media-func-ioctl.xml">
-<!ENTITY sub-media-ioc-device-info SYSTEM "v4l/media-ioc-device-info.xml">
-<!ENTITY sub-media-ioc-enum-entities SYSTEM "v4l/media-ioc-enum-entities.xml">
-<!ENTITY sub-media-ioc-enum-links SYSTEM "v4l/media-ioc-enum-links.xml">
-<!ENTITY sub-media-ioc-setup-link SYSTEM "v4l/media-ioc-setup-link.xml">
-
-<!-- Function Reference -->
-<!ENTITY close SYSTEM "v4l/func-close.xml">
-<!ENTITY ioctl SYSTEM "v4l/func-ioctl.xml">
-<!ENTITY mmap SYSTEM "v4l/func-mmap.xml">
-<!ENTITY munmap SYSTEM "v4l/func-munmap.xml">
-<!ENTITY open SYSTEM "v4l/func-open.xml">
-<!ENTITY poll SYSTEM "v4l/func-poll.xml">
-<!ENTITY read SYSTEM "v4l/func-read.xml">
-<!ENTITY select SYSTEM "v4l/func-select.xml">
-<!ENTITY write SYSTEM "v4l/func-write.xml">
-<!ENTITY grey SYSTEM "v4l/pixfmt-grey.xml">
-<!ENTITY nv12 SYSTEM "v4l/pixfmt-nv12.xml">
-<!ENTITY nv12m SYSTEM "v4l/pixfmt-nv12m.xml">
-<!ENTITY nv16 SYSTEM "v4l/pixfmt-nv16.xml">
-<!ENTITY packed-rgb SYSTEM "v4l/pixfmt-packed-rgb.xml">
-<!ENTITY packed-yuv SYSTEM "v4l/pixfmt-packed-yuv.xml">
-<!ENTITY sbggr16 SYSTEM "v4l/pixfmt-sbggr16.xml">
-<!ENTITY sbggr8 SYSTEM "v4l/pixfmt-sbggr8.xml">
-<!ENTITY sgbrg8 SYSTEM "v4l/pixfmt-sgbrg8.xml">
-<!ENTITY sgrbg8 SYSTEM "v4l/pixfmt-sgrbg8.xml">
-<!ENTITY uyvy SYSTEM "v4l/pixfmt-uyvy.xml">
-<!ENTITY vyuy SYSTEM "v4l/pixfmt-vyuy.xml">
-<!ENTITY y16 SYSTEM "v4l/pixfmt-y16.xml">
-<!ENTITY y41p SYSTEM "v4l/pixfmt-y41p.xml">
-<!ENTITY yuv410 SYSTEM "v4l/pixfmt-yuv410.xml">
-<!ENTITY yuv411p SYSTEM "v4l/pixfmt-yuv411p.xml">
-<!ENTITY yuv420 SYSTEM "v4l/pixfmt-yuv420.xml">
-<!ENTITY yuv420m SYSTEM "v4l/pixfmt-yuv420m.xml">
-<!ENTITY yuv422p SYSTEM "v4l/pixfmt-yuv422p.xml">
-<!ENTITY yuyv SYSTEM "v4l/pixfmt-yuyv.xml">
-<!ENTITY yvyu SYSTEM "v4l/pixfmt-yvyu.xml">
-<!ENTITY srggb10 SYSTEM "v4l/pixfmt-srggb10.xml">
-<!ENTITY srggb8 SYSTEM "v4l/pixfmt-srggb8.xml">
-<!ENTITY y10 SYSTEM "v4l/pixfmt-y10.xml">
-<!ENTITY cropcap SYSTEM "v4l/vidioc-cropcap.xml">
-<!ENTITY dbg-g-register SYSTEM "v4l/vidioc-dbg-g-register.xml">
-<!ENTITY encoder-cmd SYSTEM "v4l/vidioc-encoder-cmd.xml">
-<!ENTITY enum-fmt SYSTEM "v4l/vidioc-enum-fmt.xml">
-<!ENTITY enum-frameintervals SYSTEM "v4l/vidioc-enum-frameintervals.xml">
-<!ENTITY enum-framesizes SYSTEM "v4l/vidioc-enum-framesizes.xml">
-<!ENTITY enumaudio SYSTEM "v4l/vidioc-enumaudio.xml">
-<!ENTITY enumaudioout SYSTEM "v4l/vidioc-enumaudioout.xml">
-<!ENTITY enuminput SYSTEM "v4l/vidioc-enuminput.xml">
-<!ENTITY enumoutput SYSTEM "v4l/vidioc-enumoutput.xml">
-<!ENTITY enum-dv-presets SYSTEM "v4l/vidioc-enum-dv-presets.xml">
-<!ENTITY g-dv-preset SYSTEM "v4l/vidioc-g-dv-preset.xml">
-<!ENTITY query-dv-preset SYSTEM "v4l/vidioc-query-dv-preset.xml">
-<!ENTITY g-dv-timings SYSTEM "v4l/vidioc-g-dv-timings.xml">
-<!ENTITY enumstd SYSTEM "v4l/vidioc-enumstd.xml">
-<!ENTITY g-audio SYSTEM "v4l/vidioc-g-audio.xml">
-<!ENTITY g-audioout SYSTEM "v4l/vidioc-g-audioout.xml">
-<!ENTITY dbg-g-chip-ident SYSTEM "v4l/vidioc-dbg-g-chip-ident.xml">
-<!ENTITY g-crop SYSTEM "v4l/vidioc-g-crop.xml">
-<!ENTITY g-ctrl SYSTEM "v4l/vidioc-g-ctrl.xml">
-<!ENTITY g-enc-index SYSTEM "v4l/vidioc-g-enc-index.xml">
-<!ENTITY g-ext-ctrls SYSTEM "v4l/vidioc-g-ext-ctrls.xml">
-<!ENTITY g-fbuf SYSTEM "v4l/vidioc-g-fbuf.xml">
-<!ENTITY g-fmt SYSTEM "v4l/vidioc-g-fmt.xml">
-<!ENTITY g-frequency SYSTEM "v4l/vidioc-g-frequency.xml">
-<!ENTITY g-input SYSTEM "v4l/vidioc-g-input.xml">
-<!ENTITY g-jpegcomp SYSTEM "v4l/vidioc-g-jpegcomp.xml">
-<!ENTITY g-modulator SYSTEM "v4l/vidioc-g-modulator.xml">
-<!ENTITY g-output SYSTEM "v4l/vidioc-g-output.xml">
-<!ENTITY g-parm SYSTEM "v4l/vidioc-g-parm.xml">
-<!ENTITY g-priority SYSTEM "v4l/vidioc-g-priority.xml">
-<!ENTITY g-sliced-vbi-cap SYSTEM "v4l/vidioc-g-sliced-vbi-cap.xml">
-<!ENTITY g-std SYSTEM "v4l/vidioc-g-std.xml">
-<!ENTITY g-tuner SYSTEM "v4l/vidioc-g-tuner.xml">
-<!ENTITY log-status SYSTEM "v4l/vidioc-log-status.xml">
-<!ENTITY overlay SYSTEM "v4l/vidioc-overlay.xml">
-<!ENTITY qbuf SYSTEM "v4l/vidioc-qbuf.xml">
-<!ENTITY querybuf SYSTEM "v4l/vidioc-querybuf.xml">
-<!ENTITY querycap SYSTEM "v4l/vidioc-querycap.xml">
-<!ENTITY queryctrl SYSTEM "v4l/vidioc-queryctrl.xml">
-<!ENTITY querystd SYSTEM "v4l/vidioc-querystd.xml">
-<!ENTITY reqbufs SYSTEM "v4l/vidioc-reqbufs.xml">
-<!ENTITY s-hw-freq-seek SYSTEM "v4l/vidioc-s-hw-freq-seek.xml">
-<!ENTITY streamon SYSTEM "v4l/vidioc-streamon.xml">
-<!ENTITY dqevent SYSTEM "v4l/vidioc-dqevent.xml">
-<!ENTITY subscribe_event SYSTEM "v4l/vidioc-subscribe-event.xml">
diff --git a/Documentation/DocBook/media-indices.tmpl b/Documentation/DocBook/media-indices.tmpl
deleted file mode 100644
index 78d6031..0000000
--- a/Documentation/DocBook/media-indices.tmpl
+++ /dev/null
@@ -1,89 +0,0 @@
-<!-- Generated file! Do not edit. -->
-
-<index><title>List of Types</title>
-<indexentry><primaryie><link linkend='v4l2-std-id'>v4l2_std_id</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-buf-type'>v4l2_buf_type</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-colorspace'>v4l2_colorspace</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-ctrl-type'>v4l2_ctrl_type</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-exposure-auto-type'>v4l2_exposure_auto_type</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-field'>v4l2_field</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-frmivaltypes'>v4l2_frmivaltypes</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-frmsizetypes'>v4l2_frmsizetypes</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-memory'>v4l2_memory</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-ac3-bitrate'>v4l2_mpeg_audio_ac3_bitrate</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-crc'>v4l2_mpeg_audio_crc</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-emphasis'>v4l2_mpeg_audio_emphasis</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-encoding'>v4l2_mpeg_audio_encoding</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-l1-bitrate'>v4l2_mpeg_audio_l1_bitrate</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-l2-bitrate'>v4l2_mpeg_audio_l2_bitrate</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-l3-bitrate'>v4l2_mpeg_audio_l3_bitrate</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-mode'>v4l2_mpeg_audio_mode</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-mode-extension'>v4l2_mpeg_audio_mode_extension</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-audio-sampling-freq'>v4l2_mpeg_audio_sampling_freq</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='chroma-spatial-filter-type'>v4l2_mpeg_cx2341x_video_chroma_spatial_filter_type</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='luma-spatial-filter-type'>v4l2_mpeg_cx2341x_video_luma_spatial_filter_type</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-cx2341x-video-median-filter-type'>v4l2_mpeg_cx2341x_video_median_filter_type</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-cx2341x-video-spatial-filter-mode'>v4l2_mpeg_cx2341x_video_spatial_filter_mode</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-cx2341x-video-temporal-filter-mode'>v4l2_mpeg_cx2341x_video_temporal_filter_mode</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-stream-type'>v4l2_mpeg_stream_type</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-stream-vbi-fmt'>v4l2_mpeg_stream_vbi_fmt</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-video-aspect'>v4l2_mpeg_video_aspect</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-video-bitrate-mode'>v4l2_mpeg_video_bitrate_mode</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-mpeg-video-encoding'>v4l2_mpeg_video_encoding</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-power-line-frequency'>v4l2_power_line_frequency</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-priority'>v4l2_priority</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-tuner-type'>v4l2_tuner_type</link></primaryie></indexentry>
-<indexentry><primaryie>enum <link linkend='v4l2-preemphasis'>v4l2_preemphasis</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-audio'>v4l2_audio</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-audioout'>v4l2_audioout</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-bt-timings'>v4l2_bt_timings</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-buffer'>v4l2_buffer</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-capability'>v4l2_capability</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-captureparm'>v4l2_captureparm</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-clip'>v4l2_clip</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-control'>v4l2_control</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-crop'>v4l2_crop</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-cropcap'>v4l2_cropcap</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-dbg-chip-ident'>v4l2_dbg_chip_ident</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-dbg-match'>v4l2_dbg_match</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-dbg-register'>v4l2_dbg_register</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-dv-enum-preset'>v4l2_dv_enum_preset</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-dv-preset'>v4l2_dv_preset</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-dv-timings'>v4l2_dv_timings</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-enc-idx'>v4l2_enc_idx</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-enc-idx-entry'>v4l2_enc_idx_entry</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-encoder-cmd'>v4l2_encoder_cmd</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-ext-control'>v4l2_ext_control</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-ext-controls'>v4l2_ext_controls</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-fmtdesc'>v4l2_fmtdesc</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-format'>v4l2_format</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-fract'>v4l2_fract</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-framebuffer'>v4l2_framebuffer</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-frequency'>v4l2_frequency</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-frmival-stepwise'>v4l2_frmival_stepwise</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-frmivalenum'>v4l2_frmivalenum</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-frmsize-discrete'>v4l2_frmsize_discrete</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-frmsize-stepwise'>v4l2_frmsize_stepwise</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-frmsizeenum'>v4l2_frmsizeenum</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-hw-freq-seek'>v4l2_hw_freq_seek</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-input'>v4l2_input</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-jpegcompression'>v4l2_jpegcompression</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-modulator'>v4l2_modulator</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-mpeg-vbi-fmt-ivtv'>v4l2_mpeg_vbi_fmt_ivtv</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-output'>v4l2_output</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-outputparm'>v4l2_outputparm</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-pix-format'>v4l2_pix_format</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-queryctrl'>v4l2_queryctrl</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-querymenu'>v4l2_querymenu</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-rect'>v4l2_rect</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-requestbuffers'>v4l2_requestbuffers</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-sliced-vbi-cap'>v4l2_sliced_vbi_cap</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-sliced-vbi-data'>v4l2_sliced_vbi_data</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-sliced-vbi-format'>v4l2_sliced_vbi_format</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-standard'>v4l2_standard</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-streamparm'>v4l2_streamparm</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-timecode'>v4l2_timecode</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-tuner'>v4l2_tuner</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-vbi-format'>v4l2_vbi_format</link></primaryie></indexentry>
-<indexentry><primaryie>struct <link linkend='v4l2-window'>v4l2_window</link></primaryie></indexentry>
-</index>
diff --git a/Documentation/DocBook/media.tmpl b/Documentation/DocBook/media.tmpl
deleted file mode 100644
index 88f2cc6..0000000
--- a/Documentation/DocBook/media.tmpl
+++ /dev/null
@@ -1,115 +0,0 @@
-<?xml version="1.0"?>
-<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
- "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [
-<!ENTITY % media-entities SYSTEM "./media-entities.tmpl"> %media-entities;
-<!ENTITY media-indices SYSTEM "./media-indices.tmpl">
-
-<!ENTITY eg "e. g.">
-<!ENTITY ie "i. e.">
-<!ENTITY fd "File descriptor returned by <link linkend='func-open'><function>open()</function></link>.">
-<!ENTITY i2c "I<superscript>2</superscript>C">
-<!ENTITY return-value "<title>Return Value</title><para>On success <returnvalue>0</returnvalue> is returned, on error <returnvalue>-1</returnvalue> and the <varname>errno</varname> variable is set appropriately:</para>">
-<!ENTITY manvol "<manvolnum>2</manvolnum>">
-
-<!-- Table templates: structs, structs w/union, defines. -->
-<!ENTITY cs-str "<colspec colname='c1' colwidth='1*' /><colspec colname='c2' colwidth='1*' /><colspec colname='c3' colwidth='2*' /><spanspec spanname='hspan' namest='c1' nameend='c3' />">
-<!ENTITY cs-ustr "<colspec colname='c1' colwidth='1*' /><colspec colname='c2' colwidth='1*' /><colspec colname='c3' colwidth='1*' /><colspec colname='c4' colwidth='2*' /><spanspec spanname='hspan' namest='c1' nameend='c4' />">
-<!ENTITY cs-def "<colspec colname='c1' colwidth='3*' /><colspec colname='c2' colwidth='1*' /><colspec colname='c3' colwidth='4*' /><spanspec spanname='hspan' namest='c1' nameend='c3' />">
-
-<!-- Video for Linux mailing list address. -->
-<!ENTITY v4l-ml "<ulink url='http://www.linuxtv.org/lists.php'>http://www.linuxtv.org/lists.php</ulink>">
-
-<!-- LinuxTV v4l-dvb repository. -->
-<!ENTITY v4l-dvb "<ulink url='http://linuxtv.org/repo/'>http://linuxtv.org/repo/</ulink>">
-]>
-
-<book id="media_api">
-<bookinfo>
-<title>LINUX MEDIA INFRASTRUCTURE API</title>
-
-<copyright>
- <year>2009-2011</year>
- <holder>LinuxTV Developers</holder>
-</copyright>
-
-<legalnotice>
-
-<para>Permission is granted to copy, distribute and/or modify
-this document under the terms of the GNU Free Documentation License,
-Version 1.1 or any later version published by the Free Software
-Foundation. A copy of the license is included in the chapter entitled
-"GNU Free Documentation License"</para>
-</legalnotice>
-
-</bookinfo>
-
-<toc></toc> <!-- autogenerated -->
-
-<preface>
- <title>Introduction</title>
-
- <para>This document covers the Linux Kernel to Userspace API's used by
- video and radio straming devices, including video cameras,
- analog and digital TV receiver cards, AM/FM receiver cards,
- streaming capture devices.</para>
- <para>It is divided into three parts.</para>
- <para>The first part covers radio, capture,
- cameras and analog TV devices.</para>
- <para>The second part covers the
- API used for digital TV and Internet reception via one of the
- several digital tv standards. While it is called as DVB API,
- in fact it covers several different video standards including
- DVB-T, DVB-S, DVB-C and ATSC. The API is currently being updated
- to documment support also for DVB-S2, ISDB-T and ISDB-S.</para>
- <para>The third part covers Remote Controller API</para>
- <para>For additional information and for the latest development code,
- see: <ulink url="http://linuxtv.org">http://linuxtv.org</ulink>.</para>
- <para>For discussing improvements, reporting troubles, sending new drivers, etc, please mail to: <ulink url="http://vger.kernel.org/vger-lists.html#linux-media">Linux Media Mailing List (LMML).</ulink>.</para>
-
-</preface>
-
-<part id="v4l2spec">
-&sub-v4l2;
-</part>
-<part id="dvbapi">
-&sub-dvbapi;
-</part>
-<part id="v4ldvb_common">
-<partinfo>
-<authorgroup>
-<author>
-<firstname>Mauro</firstname>
-<surname>Chehab</surname>
-<othername role="mi">Carvalho</othername>
-<affiliation><address><email>mchehab@redhat.com</email></address></affiliation>
-<contrib>Initial version.</contrib>
-</author>
-</authorgroup>
-<copyright>
- <year>2009-2011</year>
- <holder>Mauro Carvalho Chehab</holder>
-</copyright>
-
-<revhistory>
-<!-- Put document revisions here, newest first. -->
-<revision>
-<revnumber>1.0.0</revnumber>
-<date>2009-09-06</date>
-<authorinitials>mcc</authorinitials>
-<revremark>Initial revision</revremark>
-</revision>
-</revhistory>
-</partinfo>
-
-<title>Remote Controller API</title>
-<chapter id="remote_controllers">
-&sub-remote_controllers;
-</chapter>
-</part>
-<part id="media_common">
-&sub-media-controller;
-</part>
-
-&sub-fdl-appendix;
-
-</book>
diff --git a/Documentation/DocBook/media/Makefile b/Documentation/DocBook/media/Makefile
new file mode 100644
index 0000000..6628b4b
--- /dev/null
+++ b/Documentation/DocBook/media/Makefile
@@ -0,0 +1,386 @@
+###
+# Media build rules - Auto-generates media contents/indexes and *.h xml's
+#
+
+SHELL=/bin/bash
+
+MEDIA_OBJ_DIR=$(objtree)/Documentation/DocBook/
+MEDIA_SRC_DIR=$(srctree)/Documentation/DocBook/media
+
+MEDIA_TEMP = media-entities.tmpl \
+ media-indices.tmpl \
+ videodev2.h.xml \
+ v4l2.xml \
+ audio.h.xml \
+ ca.h.xml \
+ dmx.h.xml \
+ frontend.h.xml \
+ net.h.xml \
+ video.h.xml \
+
+IMGFILES := $(patsubst %.b64,%, $(notdir $(shell ls $(MEDIA_SRC_DIR)/*.b64)))
+OBJIMGFILES := $(addprefix $(MEDIA_OBJ_DIR)/, $(IMGFILES))
+GENFILES := $(addprefix $(MEDIA_OBJ_DIR)/, $(MEDIA_TEMP))
+
+PHONY += cleanmediadocs
+
+cleanmediadocs:
+ -@rm `find $(MEDIA_OBJ_DIR) -type l` $(GENFILES) $(OBJIMGFILES) 2>/dev/null
+
+$(obj)/media_api.xml: $(GENFILES) FORCE
+
+#$(MEDIA_OBJ_DIR)/media_api.html: $(MEDIA_OBJ_DIR)/media_api.xml
+#$(MEDIA_OBJ_DIR)/media_api.pdf: $(MEDIA_OBJ_DIR)/media_api.xml
+#$(MEDIA_OBJ_DIR)/media_api.ps: $(MEDIA_OBJ_DIR)/media_api.xml
+
+V4L_SGMLS = \
+ $(shell ls $(MEDIA_SRC_DIR)/v4l/*.xml|perl -ne 'print "$$1 " if (m,.*/(.*)\n,)') \
+ capture.c.xml \
+ keytable.c.xml \
+ v4l2grab.c.xml
+
+DVB_SGMLS = \
+ $(shell ls $(MEDIA_SRC_DIR)/dvb/*.xml|perl -ne 'print "$$1 " if (m,.*/(.*)\n,)')
+
+MEDIA_SGMLS = $(addprefix ./,$(V4L_SGMLS)) $(addprefix ./,$(DVB_SGMLS)) $(addprefix ./,$(MEDIA_TEMP))
+
+FUNCS = \
+ close \
+ ioctl \
+ mmap \
+ munmap \
+ open \
+ poll \
+ read \
+ select \
+ write \
+
+IOCTLS = \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/videodev2.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/audio.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/ca.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/dmx.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/frontend.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([A-Z][^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/net.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/video.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/media.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/v4l2-subdev.h) \
+ VIDIOC_SUBDEV_G_FRAME_INTERVAL \
+ VIDIOC_SUBDEV_S_FRAME_INTERVAL \
+ VIDIOC_SUBDEV_ENUM_MBUS_CODE \
+ VIDIOC_SUBDEV_ENUM_FRAME_SIZE \
+ VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL \
+
+TYPES = \
+ $(shell perl -ne 'print "$$1 " if /^typedef\s+[^\s]+\s+([^\s]+)\;/' $(srctree)/include/linux/videodev2.h) \
+ $(shell perl -ne 'print "$$1 " if /^}\s+([a-z0-9_]+_t)/' $(srctree)/include/linux/dvb/frontend.h)
+
+ENUMS = \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/videodev2.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/audio.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/ca.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/dmx.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/frontend.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/net.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/video.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/media.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-mediabus.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-subdev.h)
+
+STRUCTS = \
+ $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/videodev2.h) \
+ $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s\{]+)\s*/)' $(srctree)/include/linux/dvb/audio.h) \
+ $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/ca.h) \
+ $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/dmx.h) \
+ $(shell perl -ne 'print "$$1 " if (!/dtv\_cmds\_h/ && /^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/frontend.h) \
+ $(shell perl -ne 'print "$$1 " if (/^struct\s+([A-Z][^\s]+)\s+/)' $(srctree)/include/linux/dvb/net.h) \
+ $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/video.h) \
+ $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/media.h) \
+ $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-subdev.h) \
+ $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-mediabus.h)
+
+ERRORS = \
+ E2BIG \
+ EACCES \
+ EAGAIN \
+ EBADF \
+ EBADFD \
+ EBADR \
+ EBADRQC \
+ EBUSY \
+ ECHILD \
+ ECONNRESET \
+ EDEADLK \
+ EDOM \
+ EEXIST \
+ EFAULT \
+ EFBIG \
+ EILSEQ \
+ EINIT \
+ EINPROGRESS \
+ EINTR \
+ EINVAL \
+ EIO \
+ EMFILE \
+ ENFILE \
+ ENOBUFS \
+ ENODATA \
+ ENODEV \
+ ENOENT \
+ ENOIOCTLCMD \
+ ENOMEM \
+ ENOSPC \
+ ENOSR \
+ ENOSYS \
+ ENOTSUP \
+ ENOTSUPP \
+ ENOTTY \
+ ENXIO \
+ EOPNOTSUPP \
+ EOVERFLOW \
+ EPERM \
+ EPIPE \
+ EPROTO \
+ ERANGE \
+ EREMOTE \
+ EREMOTEIO \
+ ERESTART \
+ ERESTARTSYS \
+ ESHUTDOWN \
+ ESPIPE \
+ ETIME \
+ ETIMEDOUT \
+ EUSERS \
+ EWOULDBLOCK \
+ EXDEV \
+
+ESCAPE = \
+ -e "s/&/\\&/g" \
+ -e "s/</\\</g" \
+ -e "s/>/\\>/g"
+
+FILENAME = \
+ -e s,"^[^\/]*/",, \
+ -e s/"\\.xml"// \
+ -e s/"\\.tmpl"// \
+ -e s/\\\./-/g \
+ -e s/"^func-"// \
+ -e s/"^pixfmt-"// \
+ -e s/"^vidioc-"//
+
+# Generate references to these structs in videodev2.h.xml.
+DOCUMENTED = \
+ -e "s/\(enum *\)v4l2_mpeg_cx2341x_video_\([a-z]*_spatial_filter_type\)/\1<link linkend=\"\2\">v4l2_mpeg_cx2341x_video_\2<\/link>/g" \
+ -e "s/\(\(enum\|struct\) *\)\(v4l2_[a-zA-Z0-9_]*\)/\1<link linkend=\"\3\">\3<\/link>/g" \
+ -e "s/\(V4L2_PIX_FMT_[A-Z0-9_]\+\) /<link linkend=\"\1\">\1<\/link> /g" \
+ -e ":a;s/\(linkend=\".*\)_\(.*\">\)/\1-\2/;ta" \
+ -e "s/v4l2\-mpeg\-vbi\-ITV0/v4l2-mpeg-vbi-itv0-1/g"
+
+DVB_DOCUMENTED = \
+ -e "s/\(linkend\=\"\)FE_SET_PROPERTY/\1FE_GET_PROPERTY/g" \
+ -e "s,\(struct\s\+\)\([a-z0-9_]\+\)\(\s\+{\),\1\<link linkend=\"\2\">\2\<\/link\>\3,g" \
+ -e "s,\(}\s\+\)\([a-z0-9_]\+_t\+\),\1\<link linkend=\"\2\">\2\<\/link\>,g" \
+ -e "s,\(define\s\+\)\(DTV_[A-Z0-9_]\+\)\(\s\+[0-9]\+\),\1\<link linkend=\"\2\">\2\<\/link\>\3,g" \
+ -e "s,<link\s\+linkend=\".*\">\(DTV_IOCTL_MAX_MSGS\|dtv_cmds_h\|__.*_old\)<\/link>,\1,g" \
+ -e ":a;s/\(linkend=\".*\)_\(.*\">\)/\1-\2/;ta" \
+ -e "s,\(audio-mixer\|audio-karaoke\|audio-status\|ca-slot-info\|ca-descr-info\|ca-caps\|ca-msg\|ca-descr\|ca-pid\|dmx-filter\|dmx-caps\|video-system\|video-highlight\|video-spu\|video-spu-palette\|video-navi-pack\)-t,\1,g" \
+ -e "s,DTV-ISDBT-LAYER[A-C],DTV-ISDBT-LAYER,g" \
+ -e "s,\(define\s\+\)\([A-Z0-9_]\+\)\(\s\+_IO\),\1\<link linkend=\"\2\">\2\<\/link\>\3,g" \
+ -e "s,<link\s\+linkend=\".*\">\(__.*_OLD\)<\/link>,\1,g" \
+
+#
+# Media targets and dependencies
+#
+
+install_media_images = \
+ $(Q)cp $(OBJIMGFILES) $(MEDIA_OBJ_DIR)/media_api
+
+$(MEDIA_OBJ_DIR)/%: $(MEDIA_SRC_DIR)/%.b64
+ $(Q)base64 -d $< >$@
+
+$(MEDIA_OBJ_DIR)/v4l2.xml: $(OBJIMGFILES)
+ @$($(quiet)gen_xml)
+ @(ln -sf $(MEDIA_SRC_DIR)/v4l/*xml $(MEDIA_OBJ_DIR)/)
+ @(ln -sf $(MEDIA_SRC_DIR)/dvb/*xml $(MEDIA_OBJ_DIR)/)
+
+$(MEDIA_OBJ_DIR)/videodev2.h.xml: $(srctree)/include/linux/videodev2.h $(MEDIA_OBJ_DIR)/v4l2.xml
+ @$($(quiet)gen_xml)
+ @( \
+ echo "<programlisting>") > $@
+ @( \
+ expand --tabs=8 < $< | \
+ sed $(ESCAPE) $(DOCUMENTED) | \
+ sed 's/i\.e\./&ie;/') >> $@
+ @( \
+ echo "</programlisting>") >> $@
+
+$(MEDIA_OBJ_DIR)/audio.h.xml: $(srctree)/include/linux/dvb/audio.h $(MEDIA_OBJ_DIR)/v4l2.xml
+ @$($(quiet)gen_xml)
+ @( \
+ echo "<programlisting>") > $@
+ @( \
+ expand --tabs=8 < $< | \
+ sed $(ESCAPE) $(DVB_DOCUMENTED) | \
+ sed 's/i\.e\./&ie;/') >> $@
+ @( \
+ echo "</programlisting>") >> $@
+
+$(MEDIA_OBJ_DIR)/ca.h.xml: $(srctree)/include/linux/dvb/ca.h $(MEDIA_OBJ_DIR)/v4l2.xml
+ @$($(quiet)gen_xml)
+ @( \
+ echo "<programlisting>") > $@
+ @( \
+ expand --tabs=8 < $< | \
+ sed $(ESCAPE) $(DVB_DOCUMENTED) | \
+ sed 's/i\.e\./&ie;/') >> $@
+ @( \
+ echo "</programlisting>") >> $@
+
+$(MEDIA_OBJ_DIR)/dmx.h.xml: $(srctree)/include/linux/dvb/dmx.h $(MEDIA_OBJ_DIR)/v4l2.xml
+ @$($(quiet)gen_xml)
+ @( \
+ echo "<programlisting>") > $@
+ @( \
+ expand --tabs=8 < $< | \
+ sed $(ESCAPE) $(DVB_DOCUMENTED) | \
+ sed 's/i\.e\./&ie;/') >> $@
+ @( \
+ echo "</programlisting>") >> $@
+
+$(MEDIA_OBJ_DIR)/frontend.h.xml: $(srctree)/include/linux/dvb/frontend.h $(MEDIA_OBJ_DIR)/v4l2.xml
+ @$($(quiet)gen_xml)
+ @( \
+ echo "<programlisting>") > $@
+ @( \
+ expand --tabs=8 < $< | \
+ sed $(ESCAPE) $(DVB_DOCUMENTED) | \
+ sed 's/i\.e\./&ie;/') >> $@
+ @( \
+ echo "</programlisting>") >> $@
+
+$(MEDIA_OBJ_DIR)/net.h.xml: $(srctree)/include/linux/dvb/net.h $(MEDIA_OBJ_DIR)/v4l2.xml
+ @$($(quiet)gen_xml)
+ @( \
+ echo "<programlisting>") > $@
+ @( \
+ expand --tabs=8 < $< | \
+ sed $(ESCAPE) $(DVB_DOCUMENTED) | \
+ sed 's/i\.e\./&ie;/') >> $@
+ @( \
+ echo "</programlisting>") >> $@
+
+$(MEDIA_OBJ_DIR)/video.h.xml: $(srctree)/include/linux/dvb/video.h $(MEDIA_OBJ_DIR)/v4l2.xml
+ @$($(quiet)gen_xml)
+ @( \
+ echo "<programlisting>") > $@
+ @( \
+ expand --tabs=8 < $< | \
+ sed $(ESCAPE) $(DVB_DOCUMENTED) | \
+ sed 's/i\.e\./&ie;/') >> $@
+ @( \
+ echo "</programlisting>") >> $@
+
+$(MEDIA_OBJ_DIR)/media-entities.tmpl: $(MEDIA_OBJ_DIR)/v4l2.xml
+ @$($(quiet)gen_xml)
+ @( \
+ echo "<!-- Generated file! Do not edit. -->") >$@
+ @( \
+ echo -e "\n<!-- Functions -->") >>$@
+ @( \
+ for ident in $(FUNCS) ; do \
+ entity=`echo $$ident | tr _ -` ; \
+ echo "<!ENTITY func-$$entity \"<link" \
+ "linkend='func-$$entity'><function>$$ident()</function></link>\">" \
+ >>$@ ; \
+ done)
+ @( \
+ echo -e "\n<!-- Ioctls -->") >>$@
+ @( \
+ for ident in $(IOCTLS) ; do \
+ entity=`echo $$ident | tr _ -` ; \
+ id=`grep "<refname>$$ident" $(MEDIA_OBJ_DIR)/vidioc-*.xml | sed -r s,"^.*/(.*).xml.*","\1",` ; \
+ echo "<!ENTITY $$entity \"<link" \
+ "linkend='$$id'><constant>$$ident</constant></link>\">" \
+ >>$@ ; \
+ done)
+ @( \
+ echo -e "\n<!-- Types -->") >>$@
+ @( \
+ for ident in $(TYPES) ; do \
+ entity=`echo $$ident | tr _ -` ; \
+ echo "<!ENTITY $$entity \"<link" \
+ "linkend='$$entity'>$$ident</link>\">" >>$@ ; \
+ done)
+ @( \
+ echo -e "\n<!-- Enums -->") >>$@
+ @( \
+ for ident in $(ENUMS) ; do \
+ entity=`echo $$ident | sed -e "s/v4l2_mpeg_cx2341x_video_\([a-z]*_spatial_filter_type\)/\1/" | tr _ -` ; \
+ echo "<!ENTITY $$entity \"enum <link" \
+ "linkend='$$entity'>$$ident</link>\">" >>$@ ; \
+ done)
+ @( \
+ echo -e "\n<!-- Structures -->") >>$@
+ @( \
+ for ident in $(STRUCTS) ; do \
+ entity=`echo $$ident | tr _ - | sed s/v4l2-mpeg-vbi-ITV0/v4l2-mpeg-vbi-itv0-1/g` ; \
+ echo "<!ENTITY $$entity \"struct <link" \
+ "linkend='$$entity'>$$ident</link>\">" >>$@ ; \
+ done)
+ @( \
+ echo -e "\n<!-- Error Codes -->") >>$@
+ @( \
+ for ident in $(ERRORS) ; do \
+ echo "<!ENTITY $$ident \"<errorcode>$$ident</errorcode>" \
+ "error code\">" >>$@ ; \
+ done)
+ @( \
+ echo -e "\n<!-- Subsections -->") >>$@
+ @( \
+ for file in $(MEDIA_SGMLS) ; do \
+ entity=`echo "$$file" | sed $(FILENAME) -e s/"^([^-]*)"/sub\1/` ; \
+ if ! echo "$$file" | \
+ grep -q -E -e '^(func|vidioc|pixfmt)-' ; then \
+ echo "<!ENTITY sub-$$entity SYSTEM \"$$file\">" >>$@ ; \
+ fi ; \
+ done)
+ @( \
+ echo -e "\n<!-- Function Reference -->") >>$@
+ @( \
+ for file in $(MEDIA_SGMLS) ; do \
+ if echo "$$file" | \
+ grep -q -E -e '(func|vidioc|pixfmt)-' ; then \
+ entity=`echo "$$file" |sed $(FILENAME)` ; \
+ echo "<!ENTITY $$entity SYSTEM \"$$file\">" >>$@ ; \
+ fi ; \
+ done)
+
+# Jade can auto-generate a list-of-tables, which includes all structs,
+# but we only want data types, all types, and sorted please.
+$(MEDIA_OBJ_DIR)/media-indices.tmpl: $(MEDIA_OBJ_DIR)/v4l2.xml
+ @$($(quiet)gen_xml)
+ @( \
+ echo "<!-- Generated file! Do not edit. -->") >$@
+ @( \
+ echo -e "\n<index><title>List of Types</title>") >>$@
+ @( \
+ for ident in $(TYPES) ; do \
+ id=`echo $$ident | tr _ -` ; \
+ echo "<indexentry><primaryie><link" \
+ "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \
+ done)
+ @( \
+ for ident in $(ENUMS) ; do \
+ id=`echo $$ident | sed -e "s/v4l2_mpeg_cx2341x_video_\([a-z]*_spatial_filter_type\)/\1/" | tr _ -`; \
+ echo "<indexentry><primaryie>enum <link" \
+ "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \
+ done)
+ @( \
+ for ident in $(STRUCTS) ; do \
+ id=`echo $$ident | tr _ - | sed s/v4l2-mpeg-vbi-ITV0/v4l2-mpeg-vbi-itv0-1/g` ; \
+ echo "<indexentry><primaryie>struct <link" \
+ "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \
+ done)
+ @( \
+ echo "</index>") >>$@
+
diff --git a/Documentation/DocBook/media/bayer.png.b64 b/Documentation/DocBook/media/bayer.png.b64
new file mode 100644
index 0000000..ccdf2bc
--- /dev/null
+++ b/Documentation/DocBook/media/bayer.png.b64
@@ -0,0 +1,171 @@
+iVBORw0KGgoAAAANSUhEUgAAAlgAAACqCAMAAABGfcHVAAAAAXNSR0IArs4c6QAAAwBQTFRFAAIA
+CAICAAQVEQEBAgsAJgECAAogAwsTAQopHQYBNAEAAAxNARQAERIQAhoDABwAABZEHRQKGRYKQw0F
+ACMBACUAERwpHR4cVRAFBR5rZhADACR2JiIhBDAGAiWGgQ4AcxQABDYACSeQMSYlJykmESxYlQ4A
+PSYZIS05OSsJHS5JOC8kAEMDUC8SADXLNDUzADbEAEsAADX/2RABCFIAAD/qxB0AAD//BFgAK0Vp
+WT4r3hwA3RsTRERAAEf/5CIA2iYCCUv+WUgz7iIAOk5g3CgVSU5SiD8uB2sABm8AE1X/U1RQOFyL
+4jkfIlz/RV98M1j+G2H/fVk23jtD4T0pXl9ieFtGcV894UIiYWJfAIwA50gOV2p+4kssO2j+dGZx
+bG1qVmj/OHH/aHJzfnBX5lQ7B50AZnahdXd0AKUG5V1ARnz/6mErCqgAAKsAent46GBIW4GhAK0A
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+<title>DVB Audio Device</title>
+<para>The DVB audio device controls the MPEG2 audio decoder of the DVB hardware. It
+can be accessed through <emphasis role="tt">/dev/dvb/adapter0/audio0</emphasis>. Data types and and
+ioctl definitions can be accessed by including <emphasis role="tt">linux/dvb/video.h</emphasis> in your
+application.
+</para>
+<para>Please note that some DVB cards don’t have their own MPEG decoder, which results in
+the omission of the audio and video device.
+</para>
+
+<section id="audio_data_types">
+<title>Audio Data Types</title>
+<para>This section describes the structures, data types and defines used when talking to the
+audio device.
+</para>
+
+<section id="audio-stream-source-t">
+<title>audio_stream_source_t</title>
+<para>The audio stream source is set through the AUDIO_SELECT_SOURCE call and can take
+the following values, depending on whether we are replaying from an internal (demux) or
+external (user write) source.
+</para>
+<programlisting>
+typedef enum {
+ AUDIO_SOURCE_DEMUX,
+ AUDIO_SOURCE_MEMORY
+} audio_stream_source_t;
+</programlisting>
+<para>AUDIO_SOURCE_DEMUX selects the demultiplexer (fed either by the frontend or the
+DVR device) as the source of the video stream. If AUDIO_SOURCE_MEMORY
+is selected the stream comes from the application through the <emphasis role="tt">write()</emphasis> system
+call.
+</para>
+
+</section>
+<section id="audio-play-state-t">
+<title>audio_play_state_t</title>
+<para>The following values can be returned by the AUDIO_GET_STATUS call representing the
+state of audio playback.
+</para>
+<programlisting>
+typedef enum {
+ AUDIO_STOPPED,
+ AUDIO_PLAYING,
+ AUDIO_PAUSED
+} audio_play_state_t;
+</programlisting>
+
+</section>
+<section id="audio-channel-select-t">
+<title>audio_channel_select_t</title>
+<para>The audio channel selected via AUDIO_CHANNEL_SELECT is determined by the
+following values.
+</para>
+<programlisting>
+typedef enum {
+ AUDIO_STEREO,
+ AUDIO_MONO_LEFT,
+ AUDIO_MONO_RIGHT,
+ AUDIO_MONO,
+ AUDIO_STEREO_SWAPPED
+} audio_channel_select_t;
+</programlisting>
+
+</section>
+<section id="audio-status">
+<title>struct audio_status</title>
+<para>The AUDIO_GET_STATUS call returns the following structure informing about various
+states of the playback operation.
+</para>
+<programlisting>
+typedef struct audio_status {
+ boolean AV_sync_state;
+ boolean mute_state;
+ audio_play_state_t play_state;
+ audio_stream_source_t stream_source;
+ audio_channel_select_t channel_select;
+ boolean bypass_mode;
+ audio_mixer_t mixer_state;
+} audio_status_t;
+</programlisting>
+
+</section>
+<section id="audio-mixer">
+<title>struct audio_mixer</title>
+<para>The following structure is used by the AUDIO_SET_MIXER call to set the audio
+volume.
+</para>
+<programlisting>
+typedef struct audio_mixer {
+ unsigned int volume_left;
+ unsigned int volume_right;
+} audio_mixer_t;
+</programlisting>
+
+</section>
+<section id="audio_encodings">
+<title>audio encodings</title>
+<para>A call to AUDIO_GET_CAPABILITIES returns an unsigned integer with the following
+bits set according to the hardwares capabilities.
+</para>
+<programlisting>
+ #define AUDIO_CAP_DTS 1
+ #define AUDIO_CAP_LPCM 2
+ #define AUDIO_CAP_MP1 4
+ #define AUDIO_CAP_MP2 8
+ #define AUDIO_CAP_MP3 16
+ #define AUDIO_CAP_AAC 32
+ #define AUDIO_CAP_OGG 64
+ #define AUDIO_CAP_SDDS 128
+ #define AUDIO_CAP_AC3 256
+</programlisting>
+
+</section>
+<section id="audio-karaoke">
+<title>struct audio_karaoke</title>
+<para>The ioctl AUDIO_SET_KARAOKE uses the following format:
+</para>
+<programlisting>
+typedef
+struct audio_karaoke {
+ int vocal1;
+ int vocal2;
+ int melody;
+} audio_karaoke_t;
+</programlisting>
+<para>If Vocal1 or Vocal2 are non-zero, they get mixed into left and right t at 70% each. If both,
+Vocal1 and Vocal2 are non-zero, Vocal1 gets mixed into the left channel and Vocal2 into the
+right channel at 100% each. Ff Melody is non-zero, the melody channel gets mixed into left
+and right.
+</para>
+
+</section>
+<section id="audio-attributes-t">
+<title>audio attributes</title>
+<para>The following attributes can be set by a call to AUDIO_SET_ATTRIBUTES:
+</para>
+<programlisting>
+ typedef uint16_t audio_attributes_t;
+ /⋆ bits: descr. ⋆/
+ /⋆ 15-13 audio coding mode (0=ac3, 2=mpeg1, 3=mpeg2ext, 4=LPCM, 6=DTS, ⋆/
+ /⋆ 12 multichannel extension ⋆/
+ /⋆ 11-10 audio type (0=not spec, 1=language included) ⋆/
+ /⋆ 9- 8 audio application mode (0=not spec, 1=karaoke, 2=surround) ⋆/
+ /⋆ 7- 6 Quantization / DRC (mpeg audio: 1=DRC exists)(lpcm: 0=16bit, ⋆/
+ /⋆ 5- 4 Sample frequency fs (0=48kHz, 1=96kHz) ⋆/
+ /⋆ 2- 0 number of audio channels (n+1 channels) ⋆/
+</programlisting>
+ </section></section>
+<section id="audio_function_calls">
+<title>Audio Function Calls</title>
+
+
+<section id="audio_fopen">
+<title>open()</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This system call opens a named audio device (e.g. /dev/dvb/adapter0/audio0)
+ for subsequent use. When an open() call has succeeded, the device will be ready
+ for use. The significance of blocking or non-blocking mode is described in the
+ documentation for functions where there is a difference. It does not affect the
+ semantics of the open() call itself. A device opened in blocking mode can later
+ be put into non-blocking mode (and vice versa) using the F_SETFL command
+ of the fcntl system call. This is a standard system call, documented in the Linux
+ manual page for fcntl. Only one user can open the Audio Device in O_RDWR
+ mode. All other attempts to open the device in this mode will fail, and an error
+ code will be returned. If the Audio Device is opened in O_RDONLY mode, the
+ only ioctl call that can be used is AUDIO_GET_STATUS. All other call will
+ return with an error code.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int open(const char ⋆deviceName, int flags);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>const char
+ *deviceName</para>
+</entry><entry
+ align="char">
+<para>Name of specific audio device.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int flags</para>
+</entry><entry
+ align="char">
+<para>A bit-wise OR of the following flags:</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_RDONLY read-only access</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_RDWR read/write access</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_NONBLOCK open in non-blocking mode</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>(blocking mode is the default)</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>ENODEV</para>
+</entry><entry
+ align="char">
+<para>Device driver not loaded/available.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EBUSY</para>
+</entry><entry
+ align="char">
+<para>Device or resource busy.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>Invalid argument.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section>
+<section id="audio_fclose">
+<title>close()</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This system call closes a previously opened audio device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int close(int fd);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EBADF</para>
+</entry><entry
+ align="char">
+<para>fd is not a valid open file descriptor.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section>
+<section id="audio_fwrite">
+<title>write()</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This system call can only be used if AUDIO_SOURCE_MEMORY is selected
+ in the ioctl call AUDIO_SELECT_SOURCE. The data provided shall be in
+ PES format. If O_NONBLOCK is not specified the function will block until
+ buffer space is available. The amount of data to be transferred is implied by
+ count.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>size_t write(int fd, const void ⋆buf, size_t count);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>void *buf</para>
+</entry><entry
+ align="char">
+<para>Pointer to the buffer containing the PES data.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>size_t count</para>
+</entry><entry
+ align="char">
+<para>Size of buf.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EPERM</para>
+</entry><entry
+ align="char">
+<para>Mode AUDIO_SOURCE_MEMORY not selected.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>ENOMEM</para>
+</entry><entry
+ align="char">
+<para>Attempted to write more data than the internal buffer can
+ hold.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EBADF</para>
+</entry><entry
+ align="char">
+<para>fd is not a valid open file descriptor.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="AUDIO_STOP"
+role="subsection"><title>AUDIO_STOP</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Audio Device to stop playing the current stream.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = AUDIO_STOP);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_STOP for this command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_PLAY"
+role="subsection"><title>AUDIO_PLAY</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Audio Device to start playing an audio stream from the
+ selected source.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = AUDIO_PLAY);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_PLAY for this command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_PAUSE"
+role="subsection"><title>AUDIO_PAUSE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call suspends the audio stream being played. Decoding and playing
+ are paused. It is then possible to restart again decoding and playing process of
+ the audio stream using AUDIO_CONTINUE command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>If AUDIO_SOURCE_MEMORY is selected in the ioctl call
+ AUDIO_SELECT_SOURCE, the DVB-subsystem will not decode (consume)
+ any more data until the ioctl call AUDIO_CONTINUE or AUDIO_PLAY is
+ performed.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = AUDIO_PAUSE);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_PAUSE for this command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_CONTINUE"
+role="subsection"><title>AUDIO_CONTINUE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl restarts the decoding and playing process previously paused
+with AUDIO_PAUSE command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>It only works if the stream were previously stopped with AUDIO_PAUSE</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = AUDIO_CONTINUE);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_CONTINUE for this command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_SELECT_SOURCE"
+role="subsection"><title>AUDIO_SELECT_SOURCE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call informs the audio device which source shall be used
+ for the input data. The possible sources are demux or memory. If
+ AUDIO_SOURCE_MEMORY is selected, the data is fed to the Audio Device
+ through the write command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = AUDIO_SELECT_SOURCE,
+ audio_stream_source_t source);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_SELECT_SOURCE for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>audio_stream_source_t
+ source</para>
+</entry><entry
+ align="char">
+<para>Indicates the source that shall be used for the Audio
+ stream.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_SET_MUTE"
+role="subsection"><title>AUDIO_SET_MUTE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the audio device to mute the stream that is currently being
+ played.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = AUDIO_SET_MUTE,
+ boolean state);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_SET_MUTE for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>boolean state</para>
+</entry><entry
+ align="char">
+<para>Indicates if audio device shall mute or not.</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>TRUE Audio Mute</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>FALSE Audio Un-mute</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_SET_AV_SYNC"
+role="subsection"><title>AUDIO_SET_AV_SYNC</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Audio Device to turn ON or OFF A/V synchronization.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = AUDIO_SET_AV_SYNC,
+ boolean state);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_AV_SYNC for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>boolean state</para>
+</entry><entry
+ align="char">
+<para>Tells the DVB subsystem if A/V synchronization shall be
+ ON or OFF.</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>TRUE AV-sync ON</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>FALSE AV-sync OFF</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_SET_BYPASS_MODE"
+role="subsection"><title>AUDIO_SET_BYPASS_MODE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Audio Device to bypass the Audio decoder and forward
+ the stream without decoding. This mode shall be used if streams that can’t be
+ handled by the DVB system shall be decoded. Dolby DigitalTM streams are
+ automatically forwarded by the DVB subsystem if the hardware can handle it.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ AUDIO_SET_BYPASS_MODE, boolean mode);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_SET_BYPASS_MODE for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>boolean mode</para>
+</entry><entry
+ align="char">
+<para>Enables or disables the decoding of the current Audio
+ stream in the DVB subsystem.</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>TRUE Bypass is disabled</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>FALSE Bypass is enabled</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_CHANNEL_SELECT"
+role="subsection"><title>AUDIO_CHANNEL_SELECT</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Audio Device to select the requested channel if possible.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ AUDIO_CHANNEL_SELECT, audio_channel_select_t);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_CHANNEL_SELECT for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>audio_channel_select_t
+ ch</para>
+</entry><entry
+ align="char">
+<para>Select the output format of the audio (mono left/right,
+ stereo).</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_GET_STATUS"
+role="subsection"><title>AUDIO_GET_STATUS</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Audio Device to return the current state of the Audio
+ Device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = AUDIO_GET_STATUS,
+ struct audio_status ⋆status);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_GET_STATUS for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct audio_status
+ *status</para>
+</entry><entry
+ align="char">
+<para>Returns the current state of Audio Device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_GET_CAPABILITIES"
+role="subsection"><title>AUDIO_GET_CAPABILITIES</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Audio Device to tell us about the decoding capabilities
+ of the audio hardware.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ AUDIO_GET_CAPABILITIES, unsigned int ⋆cap);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_GET_CAPABILITIES for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>unsigned int *cap</para>
+</entry><entry
+ align="char">
+<para>Returns a bit array of supported sound formats.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_CLEAR_BUFFER"
+role="subsection"><title>AUDIO_CLEAR_BUFFER</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Audio Device to clear all software and hardware buffers
+ of the audio decoder device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = AUDIO_CLEAR_BUFFER);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_CLEAR_BUFFER for this command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_SET_ID"
+role="subsection"><title>AUDIO_SET_ID</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl selects which sub-stream is to be decoded if a program or system
+ stream is sent to the video device. If no audio stream type is set the id has to be
+ in [0xC0,0xDF] for MPEG sound, in [0x80,0x87] for AC3 and in [0xA0,0xA7]
+ for LPCM. More specifications may follow for other stream types. If the stream
+ type is set the id just specifies the substream id of the audio stream and only
+ the first 5 bits are recognized.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = AUDIO_SET_ID, int
+ id);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_SET_ID for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int id</para>
+</entry><entry
+ align="char">
+<para>audio sub-stream id</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_SET_MIXER"
+role="subsection"><title>AUDIO_SET_MIXER</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl lets you adjust the mixer settings of the audio decoder.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = AUDIO_SET_MIXER,
+ audio_mixer_t ⋆mix);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_SET_ID for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>audio_mixer_t *mix</para>
+</entry><entry
+ align="char">
+<para>mixer settings.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_SET_STREAMTYPE"
+role="subsection"><title>AUDIO_SET_STREAMTYPE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl tells the driver which kind of audio stream to expect. This is useful
+ if the stream offers several audio sub-streams like LPCM and AC3.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = AUDIO_SET_STREAMTYPE,
+ int type);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_SET_STREAMTYPE for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int type</para>
+</entry><entry
+ align="char">
+<para>stream type</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>type is not a valid or supported stream type.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="AUDIO_SET_EXT_ID"
+role="subsection"><title>AUDIO_SET_EXT_ID</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl can be used to set the extension id for MPEG streams in DVD
+ playback. Only the first 3 bits are recognized.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = AUDIO_SET_EXT_ID, int
+ id);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_SET_EXT_ID for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int id</para>
+</entry><entry
+ align="char">
+<para>audio sub_stream_id</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>id is not a valid id.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="AUDIO_SET_ATTRIBUTES"
+role="subsection"><title>AUDIO_SET_ATTRIBUTES</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is intended for DVD playback and allows you to set certain
+ information about the audio stream.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = AUDIO_SET_ATTRIBUTES,
+ audio_attributes_t attr );</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_SET_ATTRIBUTES for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>audio_attributes_t
+ attr</para>
+</entry><entry
+ align="char">
+<para>audio attributes according to section ??</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>attr is not a valid or supported attribute setting.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="AUDIO_SET_KARAOKE"
+role="subsection"><title>AUDIO_SET_KARAOKE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl allows one to set the mixer settings for a karaoke DVD.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = AUDIO_SET_KARAOKE,
+ audio_karaoke_t ⋆karaoke);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_SET_KARAOKE for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>audio_karaoke_t
+ *karaoke</para>
+</entry><entry
+ align="char">
+<para>karaoke settings according to section ??.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>karaoke is not a valid or supported karaoke setting.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+ </section>
+</section>
diff --git a/Documentation/DocBook/media/dvb/ca.xml b/Documentation/DocBook/media/dvb/ca.xml
new file mode 100644
index 0000000..5c4adb4
--- /dev/null
+++ b/Documentation/DocBook/media/dvb/ca.xml
@@ -0,0 +1,229 @@
+<title>DVB CA Device</title>
+<para>The DVB CA device controls the conditional access hardware. It can be accessed through
+<emphasis role="tt">/dev/dvb/adapter0/ca0</emphasis>. Data types and and ioctl definitions can be accessed by
+including <emphasis role="tt">linux/dvb/ca.h</emphasis> in your application.
+</para>
+
+<section id="ca_data_types">
+<title>CA Data Types</title>
+
+
+<section id="ca-slot-info">
+<title>ca_slot_info_t</title>
+ <programlisting>
+typedef struct ca_slot_info {
+ int num; /⋆ slot number ⋆/
+
+ int type; /⋆ CA interface this slot supports ⋆/
+#define CA_CI 1 /⋆ CI high level interface ⋆/
+#define CA_CI_LINK 2 /⋆ CI link layer level interface ⋆/
+#define CA_CI_PHYS 4 /⋆ CI physical layer level interface ⋆/
+#define CA_DESCR 8 /⋆ built-in descrambler ⋆/
+#define CA_SC 128 /⋆ simple smart card interface ⋆/
+
+ unsigned int flags;
+#define CA_CI_MODULE_PRESENT 1 /⋆ module (or card) inserted ⋆/
+#define CA_CI_MODULE_READY 2
+} ca_slot_info_t;
+</programlisting>
+
+</section>
+<section id="ca-descr-info">
+<title>ca_descr_info_t</title>
+<programlisting>
+typedef struct ca_descr_info {
+ unsigned int num; /⋆ number of available descramblers (keys) ⋆/
+ unsigned int type; /⋆ type of supported scrambling system ⋆/
+#define CA_ECD 1
+#define CA_NDS 2
+#define CA_DSS 4
+} ca_descr_info_t;
+</programlisting>
+
+</section>
+<section id="ca-caps">
+<title>ca_caps_t</title>
+<programlisting>
+typedef struct ca_caps {
+ unsigned int slot_num; /⋆ total number of CA card and module slots ⋆/
+ unsigned int slot_type; /⋆ OR of all supported types ⋆/
+ unsigned int descr_num; /⋆ total number of descrambler slots (keys) ⋆/
+ unsigned int descr_type;/⋆ OR of all supported types ⋆/
+ } ca_cap_t;
+</programlisting>
+
+</section>
+<section id="ca-msg">
+<title>ca_msg_t</title>
+<programlisting>
+/⋆ a message to/from a CI-CAM ⋆/
+typedef struct ca_msg {
+ unsigned int index;
+ unsigned int type;
+ unsigned int length;
+ unsigned char msg[256];
+} ca_msg_t;
+</programlisting>
+
+</section>
+<section id="ca-descr">
+<title>ca_descr_t</title>
+<programlisting>
+typedef struct ca_descr {
+ unsigned int index;
+ unsigned int parity;
+ unsigned char cw[8];
+} ca_descr_t;
+</programlisting>
+</section>
+
+<section id="ca-pid">
+<title>ca-pid</title>
+<programlisting>
+typedef struct ca_pid {
+ unsigned int pid;
+ int index; /⋆ -1 == disable⋆/
+} ca_pid_t;
+</programlisting>
+</section></section>
+
+<section id="ca_function_calls">
+<title>CA Function Calls</title>
+
+
+<section id="ca_fopen">
+<title>open()</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This system call opens a named ca device (e.g. /dev/ost/ca) for subsequent use.</para>
+<para>When an open() call has succeeded, the device will be ready for use.
+ The significance of blocking or non-blocking mode is described in the
+ documentation for functions where there is a difference. It does not affect the
+ semantics of the open() call itself. A device opened in blocking mode can later
+ be put into non-blocking mode (and vice versa) using the F_SETFL command
+ of the fcntl system call. This is a standard system call, documented in the Linux
+ manual page for fcntl. Only one user can open the CA Device in O_RDWR
+ mode. All other attempts to open the device in this mode will fail, and an error
+ code will be returned.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int open(const char ⋆deviceName, int flags);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>const char
+ *deviceName</para>
+</entry><entry
+ align="char">
+<para>Name of specific video device.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int flags</para>
+</entry><entry
+ align="char">
+<para>A bit-wise OR of the following flags:</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_RDONLY read-only access</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_RDWR read/write access</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_NONBLOCK open in non-blocking mode</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>(blocking mode is the default)</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>ENODEV</para>
+</entry><entry
+ align="char">
+<para>Device driver not loaded/available.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EINTERNAL</para>
+</entry><entry
+ align="char">
+<para>Internal error.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EBUSY</para>
+</entry><entry
+ align="char">
+<para>Device or resource busy.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>Invalid argument.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section>
+<section id="ca_fclose">
+<title>close()</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This system call closes a previously opened audio device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int close(int fd);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EBADF</para>
+</entry><entry
+ align="char">
+<para>fd is not a valid open file descriptor.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+ </section>
+</section>
diff --git a/Documentation/DocBook/media/dvb/demux.xml b/Documentation/DocBook/media/dvb/demux.xml
new file mode 100644
index 0000000..37c1790
--- /dev/null
+++ b/Documentation/DocBook/media/dvb/demux.xml
@@ -0,0 +1,902 @@
+<title>DVB Demux Device</title>
+
+<para>The DVB demux device controls the filters of the DVB hardware/software. It can be
+accessed through <emphasis role="tt">/dev/adapter0/demux0</emphasis>. Data types and and ioctl definitions can be
+accessed by including <emphasis role="tt">linux/dvb/dmx.h</emphasis> in your application.
+</para>
+<section id="dmx_types">
+<title>Demux Data Types</title>
+
+<section id="dmx-output-t">
+<title>dmx_output_t</title>
+<programlisting>
+typedef enum
+{
+ DMX_OUT_DECODER, /⋆ Streaming directly to decoder. ⋆/
+ DMX_OUT_TAP, /⋆ Output going to a memory buffer ⋆/
+ /⋆ (to be retrieved via the read command).⋆/
+ DMX_OUT_TS_TAP, /⋆ Output multiplexed into a new TS ⋆/
+ /⋆ (to be retrieved by reading from the ⋆/
+ /⋆ logical DVR device). ⋆/
+ DMX_OUT_TSDEMUX_TAP /⋆ Like TS_TAP but retrieved from the DMX device ⋆/
+} dmx_output_t;
+</programlisting>
+<para><emphasis role="tt">DMX_OUT_TAP</emphasis> delivers the stream output to the demux device on which the ioctl is
+called.
+</para>
+<para><emphasis role="tt">DMX_OUT_TS_TAP</emphasis> routes output to the logical DVR device <emphasis role="tt">/dev/dvb/adapter0/dvr0</emphasis>,
+which delivers a TS multiplexed from all filters for which <emphasis role="tt">DMX_OUT_TS_TAP</emphasis> was
+specified.
+</para>
+</section>
+
+<section id="dmx-input-t">
+<title>dmx_input_t</title>
+<programlisting>
+typedef enum
+{
+ DMX_IN_FRONTEND, /⋆ Input from a front-end device. ⋆/
+ DMX_IN_DVR /⋆ Input from the logical DVR device. ⋆/
+} dmx_input_t;
+</programlisting>
+</section>
+
+<section id="dmx-pes-type-t">
+<title>dmx_pes_type_t</title>
+<programlisting>
+typedef enum
+{
+ DMX_PES_AUDIO0,
+ DMX_PES_VIDEO0,
+ DMX_PES_TELETEXT0,
+ DMX_PES_SUBTITLE0,
+ DMX_PES_PCR0,
+
+ DMX_PES_AUDIO1,
+ DMX_PES_VIDEO1,
+ DMX_PES_TELETEXT1,
+ DMX_PES_SUBTITLE1,
+ DMX_PES_PCR1,
+
+ DMX_PES_AUDIO2,
+ DMX_PES_VIDEO2,
+ DMX_PES_TELETEXT2,
+ DMX_PES_SUBTITLE2,
+ DMX_PES_PCR2,
+
+ DMX_PES_AUDIO3,
+ DMX_PES_VIDEO3,
+ DMX_PES_TELETEXT3,
+ DMX_PES_SUBTITLE3,
+ DMX_PES_PCR3,
+
+ DMX_PES_OTHER
+} dmx_pes_type_t;
+</programlisting>
+</section>
+
+<section id="dmx-filter">
+<title>struct dmx_filter</title>
+ <programlisting>
+ typedef struct dmx_filter
+{
+ __u8 filter[DMX_FILTER_SIZE];
+ __u8 mask[DMX_FILTER_SIZE];
+ __u8 mode[DMX_FILTER_SIZE];
+} dmx_filter_t;
+</programlisting>
+</section>
+
+<section id="dmx-sct-filter-params">
+<title>struct dmx_sct_filter_params</title>
+<programlisting>
+struct dmx_sct_filter_params
+{
+ __u16 pid;
+ dmx_filter_t filter;
+ __u32 timeout;
+ __u32 flags;
+#define DMX_CHECK_CRC 1
+#define DMX_ONESHOT 2
+#define DMX_IMMEDIATE_START 4
+#define DMX_KERNEL_CLIENT 0x8000
+};
+</programlisting>
+</section>
+
+<section id="dmx-pes-filter-params">
+<title>struct dmx_pes_filter_params</title>
+<programlisting>
+struct dmx_pes_filter_params
+{
+ __u16 pid;
+ dmx_input_t input;
+ dmx_output_t output;
+ dmx_pes_type_t pes_type;
+ __u32 flags;
+};
+</programlisting>
+</section>
+
+<section id="dmx-event">
+<title>struct dmx_event</title>
+ <programlisting>
+ struct dmx_event
+ {
+ dmx_event_t event;
+ time_t timeStamp;
+ union
+ {
+ dmx_scrambling_status_t scrambling;
+ } u;
+ };
+</programlisting>
+</section>
+
+<section id="dmx-stc">
+<title>struct dmx_stc</title>
+<programlisting>
+struct dmx_stc {
+ unsigned int num; /⋆ input : which STC? 0..N ⋆/
+ unsigned int base; /⋆ output: divisor for stc to get 90 kHz clock ⋆/
+ __u64 stc; /⋆ output: stc in 'base'⋆90 kHz units ⋆/
+};
+</programlisting>
+</section>
+
+<section id="dmx-caps">
+<title>struct dmx_caps</title>
+<programlisting>
+ typedef struct dmx_caps {
+ __u32 caps;
+ int num_decoders;
+} dmx_caps_t;
+</programlisting>
+</section>
+
+<section id="dmx-source-t">
+<title>enum dmx_source_t</title>
+<programlisting>
+typedef enum {
+ DMX_SOURCE_FRONT0 = 0,
+ DMX_SOURCE_FRONT1,
+ DMX_SOURCE_FRONT2,
+ DMX_SOURCE_FRONT3,
+ DMX_SOURCE_DVR0 = 16,
+ DMX_SOURCE_DVR1,
+ DMX_SOURCE_DVR2,
+ DMX_SOURCE_DVR3
+} dmx_source_t;
+</programlisting>
+</section>
+
+</section>
+<section id="dmx_fcalls">
+<title>Demux Function Calls</title>
+
+<section id="dmx_fopen">
+<title>open()</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This system call, used with a device name of /dev/dvb/adapter0/demux0,
+ allocates a new filter and returns a handle which can be used for subsequent
+ control of that filter. This call has to be made for each filter to be used, i.e. every
+ returned file descriptor is a reference to a single filter. /dev/dvb/adapter0/dvr0
+ is a logical device to be used for retrieving Transport Streams for digital
+ video recording. When reading from this device a transport stream containing
+ the packets from all PES filters set in the corresponding demux device
+ (/dev/dvb/adapter0/demux0) having the output set to DMX_OUT_TS_TAP. A
+ recorded Transport Stream is replayed by writing to this device. </para>
+<para>The significance of blocking or non-blocking mode is described in the
+ documentation for functions where there is a difference. It does not affect the
+ semantics of the open() call itself. A device opened in blocking mode can later
+ be put into non-blocking mode (and vice versa) using the F_SETFL command
+ of the fcntl system call.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int open(const char ⋆deviceName, int flags);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>const char
+ *deviceName</para>
+</entry><entry
+ align="char">
+<para>Name of demux device.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int flags</para>
+</entry><entry
+ align="char">
+<para>A bit-wise OR of the following flags:</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_RDWR read/write access</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_NONBLOCK open in non-blocking mode</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>(blocking mode is the default)</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>ENODEV</para>
+</entry><entry
+ align="char">
+<para>Device driver not loaded/available.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>Invalid argument.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EMFILE</para>
+</entry><entry
+ align="char">
+<para>“Too many open files”, i.e. no more filters available.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>ENOMEM</para>
+</entry><entry
+ align="char">
+<para>The driver failed to allocate enough memory.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+</section>
+
+<section id="dmx_fclose">
+<title>close()</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This system call deactivates and deallocates a filter that was previously
+ allocated via the open() call.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int close(int fd);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EBADF</para>
+</entry><entry
+ align="char">
+<para>fd is not a valid open file descriptor.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+</section>
+
+<section id="dmx_fread">
+<title>read()</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This system call returns filtered data, which might be section or PES data. The
+ filtered data is transferred from the driver’s internal circular buffer to buf. The
+ maximum amount of data to be transferred is implied by count.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>When returning section data the driver always tries to return a complete single
+ section (even though buf would provide buffer space for more data). If the size
+ of the buffer is smaller than the section as much as possible will be returned,
+ and the remaining data will be provided in subsequent calls.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>The size of the internal buffer is 2 * 4096 bytes (the size of two maximum
+ sized sections) by default. The size of this buffer may be changed by using the
+ DMX_SET_BUFFER_SIZE function. If the buffer is not large enough, or if
+ the read operations are not performed fast enough, this may result in a buffer
+ overflow error. In this case EOVERFLOW will be returned, and the circular
+ buffer will be emptied. This call is blocking if there is no data to return, i.e. the
+ process will be put to sleep waiting for data, unless the O_NONBLOCK flag
+ is specified.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>Note that in order to be able to read, the filtering process has to be started
+ by defining either a section or a PES filter by means of the ioctl functions,
+ and then starting the filtering process via the DMX_START ioctl function
+ or by setting the DMX_IMMEDIATE_START flag. If the reading is done
+ from a logical DVR demux device, the data will constitute a Transport Stream
+ including the packets from all PES filters in the corresponding demux device
+ /dev/dvb/adapter0/demux0 having the output set to DMX_OUT_TS_TAP.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>size_t read(int fd, void ⋆buf, size_t count);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>void *buf</para>
+</entry><entry
+ align="char">
+<para>Pointer to the buffer to be used for returned filtered data.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>size_t count</para>
+</entry><entry
+ align="char">
+<para>Size of buf.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EWOULDBLOCK</para>
+</entry><entry
+ align="char">
+<para>No data to return and O_NONBLOCK was specified.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EBADF</para>
+</entry><entry
+ align="char">
+<para>fd is not a valid open file descriptor.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>ECRC</para>
+</entry><entry
+ align="char">
+<para>Last section had a CRC error - no data returned. The
+ buffer is flushed.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EOVERFLOW</para>
+</entry><entry
+ align="char">
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>The filtered data was not read from the buffer in due
+ time, resulting in non-read data being lost. The buffer is
+ flushed.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>ETIMEDOUT</para>
+</entry><entry
+ align="char">
+<para>The section was not loaded within the stated timeout
+ period. See ioctl DMX_SET_FILTER for how to set a
+ timeout.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EFAULT</para>
+</entry><entry
+ align="char">
+<para>The driver failed to write to the callers buffer due to an
+ invalid *buf pointer.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+</section>
+
+<section id="dmx_fwrite">
+<title>write()</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This system call is only provided by the logical device /dev/dvb/adapter0/dvr0,
+ associated with the physical demux device that provides the actual DVR
+ functionality. It is used for replay of a digitally recorded Transport Stream.
+ Matching filters have to be defined in the corresponding physical demux
+ device, /dev/dvb/adapter0/demux0. The amount of data to be transferred is
+ implied by count.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>ssize_t write(int fd, const void ⋆buf, size_t
+ count);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>void *buf</para>
+</entry><entry
+ align="char">
+<para>Pointer to the buffer containing the Transport Stream.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>size_t count</para>
+</entry><entry
+ align="char">
+<para>Size of buf.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EWOULDBLOCK</para>
+</entry><entry
+ align="char">
+<para>No data was written. This
+ might happen if O_NONBLOCK was specified and there
+ is no more buffer space available (if O_NONBLOCK is
+ not specified the function will block until buffer space is
+ available).</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EBUSY</para>
+</entry><entry
+ align="char">
+<para>This error code indicates that there are conflicting
+ requests. The corresponding demux device is setup to
+ receive data from the front- end. Make sure that these
+ filters are stopped and that the filters with input set to
+ DMX_IN_DVR are started.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EBADF</para>
+</entry><entry
+ align="char">
+<para>fd is not a valid open file descriptor.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+</section>
+
+<section id="DMX_START">
+<title>DMX_START</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call is used to start the actual filtering operation defined via the ioctl
+ calls DMX_SET_FILTER or DMX_SET_PES_FILTER.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl( int fd, int request = DMX_START);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals DMX_START for this command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>Invalid argument, i.e. no filtering parameters provided via
+ the DMX_SET_FILTER or DMX_SET_PES_FILTER
+ functions.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EBUSY</para>
+</entry><entry
+ align="char">
+<para>This error code indicates that there are conflicting
+ requests. There are active filters filtering data from
+ another input source. Make sure that these filters are
+ stopped before starting this filter.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+</section>
+
+<section id="DMX_STOP">
+<title>DMX_STOP</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call is used to stop the actual filtering operation defined via the
+ ioctl calls DMX_SET_FILTER or DMX_SET_PES_FILTER and started via
+ the DMX_START command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl( int fd, int request = DMX_STOP);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals DMX_STOP for this command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="DMX_SET_FILTER">
+<title>DMX_SET_FILTER</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call sets up a filter according to the filter and mask parameters
+ provided. A timeout may be defined stating number of seconds to wait for a
+ section to be loaded. A value of 0 means that no timeout should be applied.
+ Finally there is a flag field where it is possible to state whether a section should
+ be CRC-checked, whether the filter should be a ”one-shot” filter, i.e. if the
+ filtering operation should be stopped after the first section is received, and
+ whether the filtering operation should be started immediately (without waiting
+ for a DMX_START ioctl call). If a filter was previously set-up, this filter will
+ be canceled, and the receive buffer will be flushed.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl( int fd, int request = DMX_SET_FILTER,
+ struct dmx_sct_filter_params ⋆params);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals DMX_SET_FILTER for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct
+ dmx_sct_filter_params
+ *params</para>
+</entry><entry
+ align="char">
+<para>Pointer to structure containing filter parameters.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="DMX_SET_PES_FILTER">
+<title>DMX_SET_PES_FILTER</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call sets up a PES filter according to the parameters provided. By a
+ PES filter is meant a filter that is based just on the packet identifier (PID), i.e.
+ no PES header or payload filtering capability is supported.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>The transport stream destination for the filtered output may be set. Also the
+ PES type may be stated in order to be able to e.g. direct a video stream directly
+ to the video decoder. Finally there is a flag field where it is possible to state
+ whether the filtering operation should be started immediately (without waiting
+ for a DMX_START ioctl call). If a filter was previously set-up, this filter will
+ be cancelled, and the receive buffer will be flushed.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl( int fd, int request = DMX_SET_PES_FILTER,
+ struct dmx_pes_filter_params ⋆params);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals DMX_SET_PES_FILTER for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct
+ dmx_pes_filter_params
+ *params</para>
+</entry><entry
+ align="char">
+<para>Pointer to structure containing filter parameters.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EBUSY</para>
+</entry><entry
+ align="char">
+<para>This error code indicates that there are conflicting
+ requests. There are active filters filtering data from
+ another input source. Make sure that these filters are
+ stopped before starting this filter.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+</section>
+
+<section id="DMX_SET_BUFFER_SIZE">
+<title>DMX_SET_BUFFER_SIZE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call is used to set the size of the circular buffer used for filtered data.
+ The default size is two maximum sized sections, i.e. if this function is not called
+ a buffer size of 2 * 4096 bytes will be used.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl( int fd, int request =
+ DMX_SET_BUFFER_SIZE, unsigned long size);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals DMX_SET_BUFFER_SIZE for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>unsigned long size</para>
+</entry><entry
+ align="char">
+<para>Size of circular buffer.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="DMX_GET_EVENT">
+<title>DMX_GET_EVENT</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call returns an event if available. If an event is not available,
+ the behavior depends on whether the device is in blocking or non-blocking
+ mode. In the latter case, the call fails immediately with errno set to
+ EWOULDBLOCK. In the former case, the call blocks until an event becomes
+ available.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>The standard Linux poll() and/or select() system calls can be used with the
+ device file descriptor to watch for new events. For select(), the file descriptor
+ should be included in the exceptfds argument, and for poll(), POLLPRI should
+ be specified as the wake-up condition. Only the latest event for each filter is
+ saved.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl( int fd, int request = DMX_GET_EVENT,
+ struct dmx_event ⋆ev);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals DMX_GET_EVENT for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct dmx_event *ev</para>
+</entry><entry
+ align="char">
+<para>Pointer to the location where the event is to be stored.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EWOULDBLOCK</para>
+</entry><entry
+ align="char">
+<para>There is no event pending, and the device is in
+ non-blocking mode.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+</section>
+
+<section id="DMX_GET_STC">
+<title>DMX_GET_STC</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call returns the current value of the system time counter (which is driven
+ by a PES filter of type DMX_PES_PCR). Some hardware supports more than one
+ STC, so you must specify which one by setting the num field of stc before the ioctl
+ (range 0...n). The result is returned in form of a ratio with a 64 bit numerator
+ and a 32 bit denominator, so the real 90kHz STC value is stc->stc /
+ stc->base
+ .</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl( int fd, int request = DMX_GET_STC, struct
+ dmx_stc ⋆stc);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals DMX_GET_STC for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct dmx_stc *stc</para>
+</entry><entry
+ align="char">
+<para>Pointer to the location where the stc is to be stored.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>Invalid stc number.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+ </section></section>
diff --git a/Documentation/DocBook/media/dvb/dvbapi.xml b/Documentation/DocBook/media/dvb/dvbapi.xml
new file mode 100644
index 0000000..2ab6ddc
--- /dev/null
+++ b/Documentation/DocBook/media/dvb/dvbapi.xml
@@ -0,0 +1,141 @@
+<partinfo>
+<authorgroup>
+<author>
+<firstname>Ralph</firstname>
+<surname>Metzler</surname>
+<othername role="mi">J. K.</othername>
+<affiliation><address><email>rjkm@metzlerbros.de</email></address></affiliation>
+</author>
+<author>
+<firstname>Marcus</firstname>
+<surname>Metzler</surname>
+<othername role="mi">O. C.</othername>
+<affiliation><address><email>rjkm@metzlerbros.de</email></address></affiliation>
+</author>
+</authorgroup>
+<authorgroup>
+<author>
+<firstname>Mauro</firstname>
+<othername role="mi">Carvalho</othername>
+<surname>Chehab</surname>
+<affiliation><address><email>mchehab@redhat.com</email></address></affiliation>
+<contrib>Ported document to Docbook XML.</contrib>
+</author>
+</authorgroup>
+<copyright>
+ <year>2002</year>
+ <year>2003</year>
+ <holder>Convergence GmbH</holder>
+</copyright>
+<copyright>
+ <year>2009-2011</year>
+ <holder>Mauro Carvalho Chehab</holder>
+</copyright>
+
+<revhistory>
+<!-- Put document revisions here, newest first. -->
+<revision>
+ <revnumber>2.0.4</revnumber>
+ <date>2011-05-06</date>
+ <authorinitials>mcc</authorinitials>
+ <revremark>
+ Add more information about DVB APIv5, better describing the frontend GET/SET props ioctl's.
+ </revremark>
+</revision>
+<revision>
+ <revnumber>2.0.3</revnumber>
+ <date>2010-07-03</date>
+ <authorinitials>mcc</authorinitials>
+ <revremark>
+ Add some frontend capabilities flags, present on kernel, but missing at the specs.
+ </revremark>
+</revision>
+<revision>
+ <revnumber>2.0.2</revnumber>
+ <date>2009-10-25</date>
+ <authorinitials>mcc</authorinitials>
+ <revremark>
+ documents FE_SET_FRONTEND_TUNE_MODE and FE_DISHETWORK_SEND_LEGACY_CMD ioctls.
+ </revremark>
+</revision>
+<revision>
+<revnumber>2.0.1</revnumber>
+<date>2009-09-16</date>
+<authorinitials>mcc</authorinitials>
+<revremark>
+Added ISDB-T test originally written by Patrick Boettcher
+</revremark>
+</revision>
+<revision>
+<revnumber>2.0.0</revnumber>
+<date>2009-09-06</date>
+<authorinitials>mcc</authorinitials>
+<revremark>Conversion from LaTex to DocBook XML. The
+ contents is the same as the original LaTex version.</revremark>
+</revision>
+<revision>
+<revnumber>1.0.0</revnumber>
+<date>2003-07-24</date>
+<authorinitials>rjkm</authorinitials>
+<revremark>Initial revision on LaTEX.</revremark>
+</revision>
+</revhistory>
+</partinfo>
+
+
+<title>LINUX DVB API</title>
+<subtitle>Version 5.2</subtitle>
+<!-- ADD THE CHAPTERS HERE -->
+ <chapter id="dvb_introdution">
+ &sub-intro;
+ </chapter>
+ <chapter id="dvb_frontend">
+ &sub-frontend;
+ </chapter>
+ <chapter id="dvb_demux">
+ &sub-demux;
+ </chapter>
+ <chapter id="dvb_video">
+ &sub-video;
+ </chapter>
+ <chapter id="dvb_audio">
+ &sub-audio;
+ </chapter>
+ <chapter id="dvb_ca">
+ &sub-ca;
+ </chapter>
+ <chapter id="dvb_net">
+ &sub-net;
+ </chapter>
+ <chapter id="dvb_kdapi">
+ &sub-kdapi;
+ </chapter>
+ <chapter id="dvb_examples">
+ &sub-examples;
+ </chapter>
+<!-- END OF CHAPTERS -->
+ <appendix id="audio_h">
+ <title>DVB Audio Header File</title>
+ &sub-audio-h;
+ </appendix>
+ <appendix id="ca_h">
+ <title>DVB Conditional Access Header File</title>
+ &sub-ca-h;
+ </appendix>
+ <appendix id="dmx_h">
+ <title>DVB Demux Header File</title>
+ &sub-dmx-h;
+ </appendix>
+ <appendix id="frontend_h">
+ <title>DVB Frontend Header File</title>
+ &sub-frontend-h;
+ </appendix>
+ <appendix id="net_h">
+ <title>DVB Network Header File</title>
+ &sub-net-h;
+ </appendix>
+ <appendix id="video_h">
+ <title>DVB Video Header File</title>
+ &sub-video-h;
+ </appendix>
+
diff --git a/Documentation/DocBook/media/dvb/dvbproperty.xml b/Documentation/DocBook/media/dvb/dvbproperty.xml
new file mode 100644
index 0000000..3bc8a61
--- /dev/null
+++ b/Documentation/DocBook/media/dvb/dvbproperty.xml
@@ -0,0 +1,855 @@
+<section id="FE_GET_SET_PROPERTY">
+<title><constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></title>
+<para>This section describes the DVB version 5 extention of the DVB-API, also
+called "S2API", as this API were added to provide support for DVB-S2. It was
+designed to be able to replace the old frontend API. Yet, the DISEQC and
+the capability ioctls weren't implemented yet via the new way.</para>
+<para>The typical usage for the <constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant>
+API is to replace the ioctl's were the <link linkend="dvb-frontend-parameters">
+struct <constant>dvb_frontend_parameters</constant></link> were used.</para>
+<section id="dtv-property">
+<title>DTV property type</title>
+<programlisting>
+/* Reserved fields should be set to 0 */
+struct dtv_property {
+ __u32 cmd;
+ union {
+ __u32 data;
+ struct {
+ __u8 data[32];
+ __u32 len;
+ __u32 reserved1[3];
+ void *reserved2;
+ } buffer;
+ } u;
+ int result;
+} __attribute__ ((packed));
+
+/* num of properties cannot exceed DTV_IOCTL_MAX_MSGS per ioctl */
+#define DTV_IOCTL_MAX_MSGS 64
+</programlisting>
+</section>
+<section id="dtv-properties">
+<title>DTV properties type</title>
+<programlisting>
+struct dtv_properties {
+ __u32 num;
+ struct dtv_property *props;
+};
+</programlisting>
+</section>
+
+<section id="FE_GET_PROPERTY">
+<title>FE_GET_PROPERTY</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call returns one or more frontend properties. This call only
+ requires read-only access to the device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link>,
+ dtv_properties ⋆props);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int num</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link> for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct dtv_property *props</para>
+</entry><entry
+ align="char">
+<para>Points to the location where the front-end property commands are stored.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row>
+ <entry align="char"><para>EOPNOTSUPP</para></entry>
+ <entry align="char"><para>Property type not supported.</para></entry>
+ </row></tbody></tgroup></informaltable>
+</section>
+
+<section id="FE_SET_PROPERTY">
+<title>FE_SET_PROPERTY</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call sets one or more frontend properties. This call only
+ requires read-only access to the device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = <link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link>,
+ dtv_properties ⋆props);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int num</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link> for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct dtv_property *props</para>
+</entry><entry
+ align="char">
+<para>Points to the location where the front-end property commands are stored.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row>
+ <entry align="char"><para>EOPNOTSUPP</para></entry>
+ <entry align="char"><para>Property type not supported.</para></entry>
+ </row></tbody></tgroup></informaltable>
+</section>
+
+<section>
+ <title>Property types</title>
+<para>
+On <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link>/<link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link>,
+the actual action is determined by the dtv_property cmd/data pairs. With one single ioctl, is possible to
+get/set up to 64 properties. The actual meaning of each property is described on the next sections.
+</para>
+
+<para>The available frontend property types are shown on the next section.</para>
+</section>
+
+<section id="fe_property_parameters">
+ <title>Digital TV property parameters</title>
+ <section id="DTV-UNDEFINED">
+ <title><constant>DTV_UNDEFINED</constant></title>
+ <para>Used internally. A GET/SET operation for it won't change or return anything.</para>
+ </section>
+ <section id="DTV-TUNE">
+ <title><constant>DTV_TUNE</constant></title>
+ <para>Interpret the cache of data, build either a traditional frontend tunerequest so we can pass validation in the <constant>FE_SET_FRONTEND</constant> ioctl.</para>
+ </section>
+ <section id="DTV-CLEAR">
+ <title><constant>DTV_CLEAR</constant></title>
+ <para>Reset a cache of data specific to the frontend here. This does not effect hardware.</para>
+ </section>
+ <section id="DTV-FREQUENCY">
+ <title><constant>DTV_FREQUENCY</constant></title>
+
+ <para>Central frequency of the channel, in HZ.</para>
+
+ <para>Notes:</para>
+ <para>1)For ISDB-T, the channels are usually transmitted with an offset of 143kHz.
+ E.g. a valid frequncy could be 474143 kHz. The stepping is bound to the bandwidth of
+ the channel which is 6MHz.</para>
+
+ <para>2)As in ISDB-Tsb the channel consists of only one or three segments the
+ frequency step is 429kHz, 3*429 respectively. As for ISDB-T the
+ central frequency of the channel is expected.</para>
+ </section>
+ <section id="DTV-MODULATION">
+ <title><constant>DTV_MODULATION</constant></title>
+<para>Specifies the frontend modulation type for cable and satellite types. The modulation can be one of the types bellow:</para>
+<programlisting>
+ typedef enum fe_modulation {
+ QPSK,
+ QAM_16,
+ QAM_32,
+ QAM_64,
+ QAM_128,
+ QAM_256,
+ QAM_AUTO,
+ VSB_8,
+ VSB_16,
+ PSK_8,
+ APSK_16,
+ APSK_32,
+ DQPSK,
+ } fe_modulation_t;
+</programlisting>
+ </section>
+ <section id="DTV-BANDWIDTH-HZ">
+ <title><constant>DTV_BANDWIDTH_HZ</constant></title>
+
+ <para>Bandwidth for the channel, in HZ.</para>
+
+ <para>Possible values:
+ <constant>1712000</constant>,
+ <constant>5000000</constant>,
+ <constant>6000000</constant>,
+ <constant>7000000</constant>,
+ <constant>8000000</constant>,
+ <constant>10000000</constant>.
+ </para>
+
+ <para>Notes:</para>
+
+ <para>1) For ISDB-T it should be always 6000000Hz (6MHz)</para>
+ <para>2) For ISDB-Tsb it can vary depending on the number of connected segments</para>
+ <para>3) Bandwidth doesn't apply for DVB-C transmissions, as the bandwidth
+ for DVB-C depends on the symbol rate</para>
+ <para>4) Bandwidth in ISDB-T is fixed (6MHz) or can be easily derived from
+ other parameters (DTV_ISDBT_SB_SEGMENT_IDX,
+ DTV_ISDBT_SB_SEGMENT_COUNT).</para>
+ <para>5) DVB-T supports 6, 7 and 8MHz.</para>
+ <para>6) In addition, DVB-T2 supports 1.172, 5 and 10MHz.</para>
+ </section>
+ <section id="DTV-INVERSION">
+ <title><constant>DTV_INVERSION</constant></title>
+ <para>The Inversion field can take one of these values:
+ </para>
+ <programlisting>
+ typedef enum fe_spectral_inversion {
+ INVERSION_OFF,
+ INVERSION_ON,
+ INVERSION_AUTO
+ } fe_spectral_inversion_t;
+ </programlisting>
+ <para>It indicates if spectral inversion should be presumed or not. In the automatic setting
+ (<constant>INVERSION_AUTO</constant>) the hardware will try to figure out the correct setting by
+ itself.
+ </para>
+ </section>
+ <section id="DTV-DISEQC-MASTER">
+ <title><constant>DTV_DISEQC_MASTER</constant></title>
+ <para>Currently not implemented.</para>
+ </section>
+ <section id="DTV-SYMBOL-RATE">
+ <title><constant>DTV_SYMBOL_RATE</constant></title>
+ <para>Digital TV symbol rate, in bauds (symbols/second). Used on cable standards.</para>
+ </section>
+ <section id="DTV-INNER-FEC">
+ <title><constant>DTV_INNER_FEC</constant></title>
+ <para>Used cable/satellite transmissions. The acceptable values are:
+ </para>
+ <programlisting>
+typedef enum fe_code_rate {
+ FEC_NONE = 0,
+ FEC_1_2,
+ FEC_2_3,
+ FEC_3_4,
+ FEC_4_5,
+ FEC_5_6,
+ FEC_6_7,
+ FEC_7_8,
+ FEC_8_9,
+ FEC_AUTO,
+ FEC_3_5,
+ FEC_9_10,
+} fe_code_rate_t;
+ </programlisting>
+ <para>which correspond to error correction rates of 1/2, 2/3, etc.,
+ no error correction or auto detection.</para>
+ </section>
+ <section id="DTV-VOLTAGE">
+ <title><constant>DTV_VOLTAGE</constant></title>
+ <para>The voltage is usually used with non-DiSEqC capable LNBs to switch
+ the polarzation (horizontal/vertical). When using DiSEqC epuipment this
+ voltage has to be switched consistently to the DiSEqC commands as
+ described in the DiSEqC spec.</para>
+ <programlisting>
+ typedef enum fe_sec_voltage {
+ SEC_VOLTAGE_13,
+ SEC_VOLTAGE_18
+ } fe_sec_voltage_t;
+ </programlisting>
+ </section>
+ <section id="DTV-TONE">
+ <title><constant>DTV_TONE</constant></title>
+ <para>Currently not used.</para>
+ </section>
+ <section id="DTV-PILOT">
+ <title><constant>DTV_PILOT</constant></title>
+ <para>Sets DVB-S2 pilot</para>
+ <section id="fe-pilot-t">
+ <title>fe_pilot type</title>
+ <programlisting>
+typedef enum fe_pilot {
+ PILOT_ON,
+ PILOT_OFF,
+ PILOT_AUTO,
+} fe_pilot_t;
+ </programlisting>
+ </section>
+ </section>
+ <section id="DTV-ROLLOFF">
+ <title><constant>DTV_ROLLOFF</constant></title>
+ <para>Sets DVB-S2 rolloff</para>
+
+ <section id="fe-rolloff-t">
+ <title>fe_rolloff type</title>
+ <programlisting>
+typedef enum fe_rolloff {
+ ROLLOFF_35, /* Implied value in DVB-S, default for DVB-S2 */
+ ROLLOFF_20,
+ ROLLOFF_25,
+ ROLLOFF_AUTO,
+} fe_rolloff_t;
+ </programlisting>
+ </section>
+ </section>
+ <section id="DTV-DISEQC-SLAVE-REPLY">
+ <title><constant>DTV_DISEQC_SLAVE_REPLY</constant></title>
+ <para>Currently not implemented.</para>
+ </section>
+ <section id="DTV-FE-CAPABILITY-COUNT">
+ <title><constant>DTV_FE_CAPABILITY_COUNT</constant></title>
+ <para>Currently not implemented.</para>
+ </section>
+ <section id="DTV-FE-CAPABILITY">
+ <title><constant>DTV_FE_CAPABILITY</constant></title>
+ <para>Currently not implemented.</para>
+ </section>
+ <section id="DTV-DELIVERY-SYSTEM">
+ <title><constant>DTV_DELIVERY_SYSTEM</constant></title>
+ <para>Specifies the type of Delivery system</para>
+ <section id="fe-delivery-system-t">
+ <title>fe_delivery_system type</title>
+ <para>Possible values: </para>
+<programlisting>
+typedef enum fe_delivery_system {
+ SYS_UNDEFINED,
+ SYS_DVBC_ANNEX_AC,
+ SYS_DVBC_ANNEX_B,
+ SYS_DVBT,
+ SYS_DSS,
+ SYS_DVBS,
+ SYS_DVBS2,
+ SYS_DVBH,
+ SYS_ISDBT,
+ SYS_ISDBS,
+ SYS_ISDBC,
+ SYS_ATSC,
+ SYS_ATSCMH,
+ SYS_DMBTH,
+ SYS_CMMB,
+ SYS_DAB,
+ SYS_DVBT2,
+ SYS_TURBO,
+} fe_delivery_system_t;
+</programlisting>
+ </section>
+ </section>
+ <section id="DTV-ISDBT-PARTIAL-RECEPTION">
+ <title><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></title>
+
+ <para>If <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '0' this bit-field represents whether
+ the channel is in partial reception mode or not.</para>
+
+ <para>If '1' <constant>DTV_ISDBT_LAYERA_*</constant> values are assigned to the center segment and
+ <constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant> has to be '1'.</para>
+
+ <para>If in addition <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'
+ <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> represents whether this ISDB-Tsb channel
+ is consisting of one segment and layer or three segments and two layers.</para>
+
+ <para>Possible values: 0, 1, -1 (AUTO)</para>
+ </section>
+ <section id="DTV-ISDBT-SOUND-BROADCASTING">
+ <title><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></title>
+
+ <para>This field represents whether the other DTV_ISDBT_*-parameters are
+ referring to an ISDB-T and an ISDB-Tsb channel. (See also
+ <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>).</para>
+
+ <para>Possible values: 0, 1, -1 (AUTO)</para>
+ </section>
+ <section id="DTV-ISDBT-SB-SUBCHANNEL-ID">
+ <title><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></title>
+
+ <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
+
+ <para>(Note of the author: This might not be the correct description of the
+ <constant>SUBCHANNEL-ID</constant> in all details, but it is my understanding of the technical
+ background needed to program a device)</para>
+
+ <para>An ISDB-Tsb channel (1 or 3 segments) can be broadcasted alone or in a
+ set of connected ISDB-Tsb channels. In this set of channels every
+ channel can be received independently. The number of connected
+ ISDB-Tsb segment can vary, e.g. depending on the frequency spectrum
+ bandwidth available.</para>
+
+ <para>Example: Assume 8 ISDB-Tsb connected segments are broadcasted. The
+ broadcaster has several possibilities to put those channels in the
+ air: Assuming a normal 13-segment ISDB-T spectrum he can align the 8
+ segments from position 1-8 to 5-13 or anything in between.</para>
+
+ <para>The underlying layer of segments are subchannels: each segment is
+ consisting of several subchannels with a predefined IDs. A sub-channel
+ is used to help the demodulator to synchronize on the channel.</para>
+
+ <para>An ISDB-T channel is always centered over all sub-channels. As for
+ the example above, in ISDB-Tsb it is no longer as simple as that.</para>
+
+ <para><constant>The DTV_ISDBT_SB_SUBCHANNEL_ID</constant> parameter is used to give the
+ sub-channel ID of the segment to be demodulated.</para>
+
+ <para>Possible values: 0 .. 41, -1 (AUTO)</para>
+ </section>
+ <section id="DTV-ISDBT-SB-SEGMENT-IDX">
+ <title><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></title>
+ <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
+ <para><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant> gives the index of the segment to be
+ demodulated for an ISDB-Tsb channel where several of them are
+ transmitted in the connected manner.</para>
+ <para>Possible values: 0 .. <constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> - 1</para>
+ <para>Note: This value cannot be determined by an automatic channel search.</para>
+ </section>
+ <section id="DTV-ISDBT-SB-SEGMENT-COUNT">
+ <title><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></title>
+ <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
+ <para><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> gives the total count of connected ISDB-Tsb
+ channels.</para>
+ <para>Possible values: 1 .. 13</para>
+ <para>Note: This value cannot be determined by an automatic channel search.</para>
+ </section>
+ <section id="isdb-hierq-layers">
+ <title><constant>DTV-ISDBT-LAYER*</constant> parameters</title>
+ <para>ISDB-T channels can be coded hierarchically. As opposed to DVB-T in
+ ISDB-T hierarchical layers can be decoded simultaneously. For that
+ reason a ISDB-T demodulator has 3 viterbi and 3 reed-solomon-decoders.</para>
+ <para>ISDB-T has 3 hierarchical layers which each can use a part of the
+ available segments. The total number of segments over all layers has
+ to 13 in ISDB-T.</para>
+ <para>There are 3 parameter sets, for Layers A, B and C.</para>
+ <section id="DTV-ISDBT-LAYER-ENABLED">
+ <title><constant>DTV_ISDBT_LAYER_ENABLED</constant></title>
+ <para>Hierarchical reception in ISDB-T is achieved by enabling or disabling
+ layers in the decoding process. Setting all bits of
+ <constant>DTV_ISDBT_LAYER_ENABLED</constant> to '1' forces all layers (if applicable) to be
+ demodulated. This is the default.</para>
+ <para>If the channel is in the partial reception mode
+ (<constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> = 1) the central segment can be decoded
+ independently of the other 12 segments. In that mode layer A has to
+ have a <constant>SEGMENT_COUNT</constant> of 1.</para>
+ <para>In ISDB-Tsb only layer A is used, it can be 1 or 3 in ISDB-Tsb
+ according to <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>. <constant>SEGMENT_COUNT</constant> must be filled
+ accordingly.</para>
+ <para>Possible values: 0x1, 0x2, 0x4 (|-able)</para>
+ <para><constant>DTV_ISDBT_LAYER_ENABLED[0:0]</constant> - layer A</para>
+ <para><constant>DTV_ISDBT_LAYER_ENABLED[1:1]</constant> - layer B</para>
+ <para><constant>DTV_ISDBT_LAYER_ENABLED[2:2]</constant> - layer C</para>
+ <para><constant>DTV_ISDBT_LAYER_ENABLED[31:3]</constant> unused</para>
+ </section>
+ <section id="DTV-ISDBT-LAYER-FEC">
+ <title><constant>DTV_ISDBT_LAYER*_FEC</constant></title>
+ <para>Possible values: <constant>FEC_AUTO</constant>, <constant>FEC_1_2</constant>, <constant>FEC_2_3</constant>, <constant>FEC_3_4</constant>, <constant>FEC_5_6</constant>, <constant>FEC_7_8</constant></para>
+ </section>
+ <section id="DTV-ISDBT-LAYER-MODULATION">
+ <title><constant>DTV_ISDBT_LAYER*_MODULATION</constant></title>
+ <para>Possible values: <constant>QAM_AUTO</constant>, QP<constant>SK, QAM_16</constant>, <constant>QAM_64</constant>, <constant>DQPSK</constant></para>
+ <para>Note: If layer C is <constant>DQPSK</constant> layer B has to be <constant>DQPSK</constant>. If layer B is <constant>DQPSK</constant>
+ and <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>=0 layer has to be <constant>DQPSK</constant>.</para>
+ </section>
+ <section id="DTV-ISDBT-LAYER-SEGMENT-COUNT">
+ <title><constant>DTV_ISDBT_LAYER*_SEGMENT_COUNT</constant></title>
+ <para>Possible values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -1 (AUTO)</para>
+ <para>Note: Truth table for <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> and
+ <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> and <constant>LAYER</constant>*_SEGMENT_COUNT</para>
+ <informaltable id="isdbt-layer_seg-cnt-table">
+ <tgroup cols="6">
+ <tbody>
+ <row>
+ <entry>PR</entry>
+ <entry>SB</entry>
+ <entry>Layer A width</entry>
+ <entry>Layer B width</entry>
+ <entry>Layer C width</entry>
+ <entry>total width</entry>
+ </row>
+ <row>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>1 .. 13</entry>
+ <entry>1 .. 13</entry>
+ <entry>1 .. 13</entry>
+ <entry>13</entry>
+ </row>
+ <row>
+ <entry>1</entry>
+ <entry>0</entry>
+ <entry>1</entry>
+ <entry>1 .. 13</entry>
+ <entry>1 .. 13</entry>
+ <entry>13</entry>
+ </row>
+ <row>
+ <entry>0</entry>
+ <entry>1</entry>
+ <entry>1</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>1</entry>
+ </row>
+ <row>
+ <entry>1</entry>
+ <entry>1</entry>
+ <entry>1</entry>
+ <entry>2</entry>
+ <entry>0</entry>
+ <entry>13</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable>
+ </section>
+ <section id="DTV-ISDBT-LAYER-TIME-INTERLEAVING">
+ <title><constant>DTV_ISDBT_LAYER*_TIME_INTERLEAVING</constant></title>
+ <para>Possible values: 0, 1, 2, 3, -1 (AUTO)</para>
+ <para>Note: The real inter-leaver depth-names depend on the mode (fft-size); the values
+ here are referring to what can be found in the TMCC-structure -
+ independent of the mode.</para>
+ </section>
+ </section>
+ <section id="DTV-API-VERSION">
+ <title><constant>DTV_API_VERSION</constant></title>
+ <para>Returns the major/minor version of the DVB API</para>
+ </section>
+ <section id="DTV-CODE-RATE-HP">
+ <title><constant>DTV_CODE_RATE_HP</constant></title>
+ <para>Used on terrestrial transmissions. The acceptable values are:
+ </para>
+ <programlisting>
+typedef enum fe_code_rate {
+ FEC_NONE = 0,
+ FEC_1_2,
+ FEC_2_3,
+ FEC_3_4,
+ FEC_4_5,
+ FEC_5_6,
+ FEC_6_7,
+ FEC_7_8,
+ FEC_8_9,
+ FEC_AUTO,
+ FEC_3_5,
+ FEC_9_10,
+} fe_code_rate_t;
+ </programlisting>
+ </section>
+ <section id="DTV-CODE-RATE-LP">
+ <title><constant>DTV_CODE_RATE_LP</constant></title>
+ <para>Used on terrestrial transmissions. The acceptable values are:
+ </para>
+ <programlisting>
+typedef enum fe_code_rate {
+ FEC_NONE = 0,
+ FEC_1_2,
+ FEC_2_3,
+ FEC_3_4,
+ FEC_4_5,
+ FEC_5_6,
+ FEC_6_7,
+ FEC_7_8,
+ FEC_8_9,
+ FEC_AUTO,
+ FEC_3_5,
+ FEC_9_10,
+} fe_code_rate_t;
+ </programlisting>
+ </section>
+ <section id="DTV-GUARD-INTERVAL">
+ <title><constant>DTV_GUARD_INTERVAL</constant></title>
+
+ <para>Possible values are:</para>
+<programlisting>
+typedef enum fe_guard_interval {
+ GUARD_INTERVAL_1_32,
+ GUARD_INTERVAL_1_16,
+ GUARD_INTERVAL_1_8,
+ GUARD_INTERVAL_1_4,
+ GUARD_INTERVAL_AUTO,
+ GUARD_INTERVAL_1_128,
+ GUARD_INTERVAL_19_128,
+ GUARD_INTERVAL_19_256,
+} fe_guard_interval_t;
+</programlisting>
+
+ <para>Notes:</para>
+ <para>1) If <constant>DTV_GUARD_INTERVAL</constant> is set the <constant>GUARD_INTERVAL_AUTO</constant> the hardware will
+ try to find the correct guard interval (if capable) and will use TMCC to fill
+ in the missing parameters.</para>
+ <para>2) Intervals 1/128, 19/128 and 19/256 are used only for DVB-T2 at present</para>
+ </section>
+ <section id="DTV-TRANSMISSION-MODE">
+ <title><constant>DTV_TRANSMISSION_MODE</constant></title>
+
+ <para>Specifies the number of carriers used by the standard</para>
+
+ <para>Possible values are:</para>
+<programlisting>
+typedef enum fe_transmit_mode {
+ TRANSMISSION_MODE_2K,
+ TRANSMISSION_MODE_8K,
+ TRANSMISSION_MODE_AUTO,
+ TRANSMISSION_MODE_4K,
+ TRANSMISSION_MODE_1K,
+ TRANSMISSION_MODE_16K,
+ TRANSMISSION_MODE_32K,
+} fe_transmit_mode_t;
+</programlisting>
+ <para>Notes:</para>
+ <para>1) ISDB-T supports three carrier/symbol-size: 8K, 4K, 2K. It is called
+ 'mode' in the standard: Mode 1 is 2K, mode 2 is 4K, mode 3 is 8K</para>
+
+ <para>2) If <constant>DTV_TRANSMISSION_MODE</constant> is set the <constant>TRANSMISSION_MODE_AUTO</constant> the
+ hardware will try to find the correct FFT-size (if capable) and will
+ use TMCC to fill in the missing parameters.</para>
+ <para>3) DVB-T specifies 2K and 8K as valid sizes.</para>
+ <para>4) DVB-T2 specifies 1K, 2K, 4K, 8K, 16K and 32K.</para>
+ </section>
+ <section id="DTV-HIERARCHY">
+ <title><constant>DTV_HIERARCHY</constant></title>
+ <para>Frontend hierarchy</para>
+ <programlisting>
+typedef enum fe_hierarchy {
+ HIERARCHY_NONE,
+ HIERARCHY_1,
+ HIERARCHY_2,
+ HIERARCHY_4,
+ HIERARCHY_AUTO
+ } fe_hierarchy_t;
+ </programlisting>
+ </section>
+ <section id="DTV-ISDBS-TS-ID">
+ <title><constant>DTV_ISDBS_TS_ID</constant></title>
+ <para>Currently unused.</para>
+ </section>
+ <section id="DTV-DVBT2-PLP-ID">
+ <title><constant>DTV_DVBT2_PLP_ID</constant></title>
+ <para>DVB-T2 supports Physical Layer Pipes (PLP) to allow transmission of
+ many data types via a single multiplex. The API will soon support this
+ at which point this section will be expanded.</para>
+ </section>
+</section>
+ <section id="frontend-property-terrestrial-systems">
+ <title>Properties used on terrestrial delivery systems</title>
+ <section id="dvbt-params">
+ <title>DVB-T delivery system</title>
+ <para>The following parameters are valid for DVB-T:</para>
+ <itemizedlist mark='opencircle'>
+ <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
+ </itemizedlist>
+ </section>
+ <section id="dvbt2-params">
+ <title>DVB-T2 delivery system</title>
+ <para>DVB-T2 support is currently in the early stages
+ of development, so expect that this section maygrow and become
+ more detailed with time.</para>
+ <para>The following parameters are valid for DVB-T2:</para>
+ <itemizedlist mark='opencircle'>
+ <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-DVBT2-PLP-ID"><constant>DTV_DVBT2_PLP_ID</constant></link></para></listitem>
+ </itemizedlist>
+ </section>
+ <section id="isdbt">
+ <title>ISDB-T delivery system</title>
+ <para>This ISDB-T/ISDB-Tsb API extension should reflect all information
+ needed to tune any ISDB-T/ISDB-Tsb hardware. Of course it is possible
+ that some very sophisticated devices won't need certain parameters to
+ tune.</para>
+ <para>The information given here should help application writers to know how
+ to handle ISDB-T and ISDB-Tsb hardware using the Linux DVB-API.</para>
+ <para>The details given here about ISDB-T and ISDB-Tsb are just enough to
+ basically show the dependencies between the needed parameter values,
+ but surely some information is left out. For more detailed information
+ see the following documents:</para>
+ <para>ARIB STD-B31 - "Transmission System for Digital Terrestrial
+ Television Broadcasting" and</para>
+ <para>ARIB TR-B14 - "Operational Guidelines for Digital Terrestrial
+ Television Broadcasting".</para>
+ <para>In order to understand the ISDB specific parameters,
+ one has to have some knowledge the channel structure in
+ ISDB-T and ISDB-Tsb. I.e. it has to be known to
+ the reader that an ISDB-T channel consists of 13 segments,
+ that it can have up to 3 layer sharing those segments,
+ and things like that.</para>
+ <para>The following parameters are valid for ISDB-T:</para>
+ <itemizedlist mark='opencircle'>
+ <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-LAYER-ENABLED"><constant>DTV_ISDBT_LAYER_ENABLED</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-PARTIAL-RECEPTION"><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-SOUND-BROADCASTING"><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-SB-SUBCHANNEL-ID"><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-SB-SEGMENT-IDX"><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-SB-SEGMENT-COUNT"><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERA_FEC</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERA_MODULATION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERA_TIME_INTERLEAVING</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERB_FEC</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERB_MODULATION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERB_SEGMENT_COUNT</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERB_TIME_INTERLEAVING</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERC_FEC</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERC_MODULATION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERC_SEGMENT_COUNT</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERC_TIME_INTERLEAVING</constant></link></para></listitem>
+ </itemizedlist>
+ </section>
+ <section id="atsc-params">
+ <title>ATSC delivery system</title>
+ <para>The following parameters are valid for ATSC:</para>
+ <itemizedlist mark='opencircle'>
+ <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
+ </itemizedlist>
+ </section>
+ </section>
+ <section id="frontend-property-cable-systems">
+ <title>Properties used on cable delivery systems</title>
+ <section id="dvbc-params">
+ <title>DVB-C delivery system</title>
+ <para>The DVB-C Annex-A/C is the widely used cable standard. Transmission uses QAM modulation.</para>
+ <para>The following parameters are valid for DVB-C Annex A/C:</para>
+ <itemizedlist mark='opencircle'>
+ <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
+ </itemizedlist>
+ </section>
+ <section id="dvbc-annex-b-params">
+ <title>DVB-C Annex B delivery system</title>
+ <para>The DVB-C Annex-B is only used on a few Countries like the United States.</para>
+ <para>The following parameters are valid for DVB-C Annex B:</para>
+ <itemizedlist mark='opencircle'>
+ <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
+ </itemizedlist>
+ </section>
+ </section>
+ <section id="frontend-property-satellital-systems">
+ <title>Properties used on satellital delivery systems</title>
+ <section id="dvbs-params">
+ <title>DVB-S delivery system</title>
+ <para>The following parameters are valid for DVB-S:</para>
+ <itemizedlist mark='opencircle'>
+ <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TONE"><constant>DTV_TONE</constant></link></para></listitem>
+ </itemizedlist>
+ <para>Future implementations might add those two missing parameters:</para>
+ <itemizedlist mark='opencircle'>
+ <listitem><para><link linkend="DTV-DISEQC-MASTER"><constant>DTV_DISEQC_MASTER</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-DISEQC-SLAVE-REPLY"><constant>DTV_DISEQC_SLAVE_REPLY</constant></link></para></listitem>
+ </itemizedlist>
+ </section>
+ <section id="dvbs2-params">
+ <title>DVB-S2 delivery system</title>
+ <para>In addition to all parameters valid for DVB-S, DVB-S2 supports the following parameters:</para>
+ <itemizedlist mark='opencircle'>
+ <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-PILOT"><constant>DTV_PILOT</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ROLLOFF"><constant>DTV_ROLLOFF</constant></link></para></listitem>
+ </itemizedlist>
+ </section>
+ <section id="turbo-params">
+ <title>Turbo code delivery system</title>
+ <para>In addition to all parameters valid for DVB-S, turbo code supports the following parameters:</para>
+ <itemizedlist mark='opencircle'>
+ <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
+ </itemizedlist>
+ </section>
+ <section id="isdbs-params">
+ <title>ISDB-S delivery system</title>
+ <para>The following parameters are valid for ISDB-S:</para>
+ <itemizedlist mark='opencircle'>
+ <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ISDBS-TS-ID"><constant>DTV_ISDBS_TS_ID</constant></link></para></listitem>
+ </itemizedlist>
+ </section>
+ </section>
+</section>
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+<title>DVB Frontend API</title>
+
+<para>The DVB frontend device controls the tuner and DVB demodulator
+hardware. It can be accessed through <emphasis
+role="tt">/dev/dvb/adapter0/frontend0</emphasis>. Data types and and
+ioctl definitions can be accessed by including <emphasis
+role="tt">linux/dvb/frontend.h</emphasis> in your application.</para>
+
+<para>DVB frontends come in three varieties: DVB-S (satellite), DVB-C
+(cable) and DVB-T (terrestrial). Transmission via the internet (DVB-IP)
+is not yet handled by this API but a future extension is possible. For
+DVB-S the frontend device also supports satellite equipment control
+(SEC) via DiSEqC and V-SEC protocols. The DiSEqC (digital SEC)
+specification is available from
+<ulink url="http://www.eutelsat.com/satellites/4_5_5.html">Eutelsat</ulink>.</para>
+
+<para>Note that the DVB API may also be used for MPEG decoder-only PCI
+cards, in which case there exists no frontend device.</para>
+
+<section id="frontend_types">
+<title>Frontend Data Types</title>
+
+<section id="fe-type-t">
+<title>Frontend type</title>
+
+<para>For historical reasons, frontend types are named by the type of modulation used in
+transmission. The fontend types are given by fe_type_t type, defined as:</para>
+
+<table pgwide="1" frame="none" id="fe-type">
+<title>Frontend types</title>
+<tgroup cols="3">
+ &cs-def;
+ <thead>
+ <row>
+ <entry>fe_type</entry>
+ <entry>Description</entry>
+ <entry><link linkend="DTV-DELIVERY-SYSTEM">DTV_DELIVERY_SYSTEM</link> equivalent type</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry id="FE_QPSK"><constant>FE_QPSK</constant></entry>
+ <entry>For DVB-S standard</entry>
+ <entry><constant>SYS_DVBS</constant></entry>
+ </row>
+ <row>
+ <entry id="FE_QAM"><constant>FE_QAM</constant></entry>
+ <entry>For DVB-C annex A/C standard</entry>
+ <entry><constant>SYS_DVBC_ANNEX_AC</constant></entry>
+ </row>
+ <row>
+ <entry id="FE_OFDM"><constant>FE_OFDM</constant></entry>
+ <entry>For DVB-T standard</entry>
+ <entry><constant>SYS_DVBT</constant></entry>
+ </row>
+ <row>
+ <entry id="FE_ATSC"><constant>FE_ATSC</constant></entry>
+ <entry>For ATSC standard (terrestrial) or for DVB-C Annex B (cable) used in US.</entry>
+ <entry><constant>SYS_ATSC</constant> (terrestrial) or <constant>SYS_DVBC_ANNEX_B</constant> (cable)</entry>
+ </row>
+</tbody></tgroup></table>
+
+<para>Newer formats like DVB-S2, ISDB-T, ISDB-S and DVB-T2 are not described at the above, as they're
+supported via the new <link linkend="FE_GET_SET_PROPERTY">FE_GET_PROPERTY/FE_GET_SET_PROPERTY</link> ioctl's, using the <link linkend="DTV-DELIVERY-SYSTEM">DTV_DELIVERY_SYSTEM</link> parameter.
+</para>
+</section>
+
+<section id="fe-caps-t">
+<title>frontend capabilities</title>
+
+<para>Capabilities describe what a frontend can do. Some capabilities can only be supported for
+a specific frontend type.</para>
+<programlisting>
+ typedef enum fe_caps {
+ FE_IS_STUPID = 0,
+ FE_CAN_INVERSION_AUTO = 0x1,
+ FE_CAN_FEC_1_2 = 0x2,
+ FE_CAN_FEC_2_3 = 0x4,
+ FE_CAN_FEC_3_4 = 0x8,
+ FE_CAN_FEC_4_5 = 0x10,
+ FE_CAN_FEC_5_6 = 0x20,
+ FE_CAN_FEC_6_7 = 0x40,
+ FE_CAN_FEC_7_8 = 0x80,
+ FE_CAN_FEC_8_9 = 0x100,
+ FE_CAN_FEC_AUTO = 0x200,
+ FE_CAN_QPSK = 0x400,
+ FE_CAN_QAM_16 = 0x800,
+ FE_CAN_QAM_32 = 0x1000,
+ FE_CAN_QAM_64 = 0x2000,
+ FE_CAN_QAM_128 = 0x4000,
+ FE_CAN_QAM_256 = 0x8000,
+ FE_CAN_QAM_AUTO = 0x10000,
+ FE_CAN_TRANSMISSION_MODE_AUTO = 0x20000,
+ FE_CAN_BANDWIDTH_AUTO = 0x40000,
+ FE_CAN_GUARD_INTERVAL_AUTO = 0x80000,
+ FE_CAN_HIERARCHY_AUTO = 0x100000,
+ FE_CAN_8VSB = 0x200000,
+ FE_CAN_16VSB = 0x400000,
+ FE_HAS_EXTENDED_CAPS = 0x800000,
+ FE_CAN_TURBO_FEC = 0x8000000,
+ FE_CAN_2G_MODULATION = 0x10000000,
+ FE_NEEDS_BENDING = 0x20000000,
+ FE_CAN_RECOVER = 0x40000000,
+ FE_CAN_MUTE_TS = 0x80000000
+ } fe_caps_t;
+</programlisting>
+</section>
+
+<section id="dvb-frontend-info">
+<title>frontend information</title>
+
+<para>Information about the frontend ca be queried with
+ <link linkend="FE_GET_INFO">FE_GET_INFO</link>.</para>
+
+<programlisting>
+ struct dvb_frontend_info {
+ char name[128];
+ fe_type_t type;
+ uint32_t frequency_min;
+ uint32_t frequency_max;
+ uint32_t frequency_stepsize;
+ uint32_t frequency_tolerance;
+ uint32_t symbol_rate_min;
+ uint32_t symbol_rate_max;
+ uint32_t symbol_rate_tolerance; /⋆ ppm ⋆/
+ uint32_t notifier_delay; /⋆ ms ⋆/
+ fe_caps_t caps;
+ };
+</programlisting>
+</section>
+
+<section id="dvb-diseqc-master-cmd">
+<title>diseqc master command</title>
+
+<para>A message sent from the frontend to DiSEqC capable equipment.</para>
+<programlisting>
+ struct dvb_diseqc_master_cmd {
+ uint8_t msg [6]; /⋆ { framing, address, command, data[3] } ⋆/
+ uint8_t msg_len; /⋆ valid values are 3...6 ⋆/
+ };
+</programlisting>
+</section>
+<section role="subsection" id="dvb-diseqc-slave-reply">
+<title>diseqc slave reply</title>
+
+<para>A reply to the frontend from DiSEqC 2.0 capable equipment.</para>
+<programlisting>
+ struct dvb_diseqc_slave_reply {
+ uint8_t msg [4]; /⋆ { framing, data [3] } ⋆/
+ uint8_t msg_len; /⋆ valid values are 0...4, 0 means no msg ⋆/
+ int timeout; /⋆ return from ioctl after timeout ms with ⋆/
+ }; /⋆ errorcode when no message was received ⋆/
+</programlisting>
+</section>
+
+<section id="fe-sec-voltage-t">
+<title>diseqc slave reply</title>
+<para>The voltage is usually used with non-DiSEqC capable LNBs to switch the polarzation
+(horizontal/vertical). When using DiSEqC epuipment this voltage has to be switched
+consistently to the DiSEqC commands as described in the DiSEqC spec.</para>
+<programlisting>
+ typedef enum fe_sec_voltage {
+ SEC_VOLTAGE_13,
+ SEC_VOLTAGE_18
+ } fe_sec_voltage_t;
+</programlisting>
+</section>
+
+<section id="fe-sec-tone-mode-t">
+<title>SEC continuous tone</title>
+
+<para>The continuous 22KHz tone is usually used with non-DiSEqC capable LNBs to switch the
+high/low band of a dual-band LNB. When using DiSEqC epuipment this voltage has to
+be switched consistently to the DiSEqC commands as described in the DiSEqC
+spec.</para>
+<programlisting>
+ typedef enum fe_sec_tone_mode {
+ SEC_TONE_ON,
+ SEC_TONE_OFF
+ } fe_sec_tone_mode_t;
+</programlisting>
+</section>
+
+<section id="fe-sec-mini-cmd-t">
+<title>SEC tone burst</title>
+
+<para>The 22KHz tone burst is usually used with non-DiSEqC capable switches to select
+between two connected LNBs/satellites. When using DiSEqC epuipment this voltage has to
+be switched consistently to the DiSEqC commands as described in the DiSEqC
+spec.</para>
+<programlisting>
+ typedef enum fe_sec_mini_cmd {
+ SEC_MINI_A,
+ SEC_MINI_B
+ } fe_sec_mini_cmd_t;
+</programlisting>
+
+<para></para>
+</section>
+
+<section id="fe-status-t">
+<title>frontend status</title>
+<para>Several functions of the frontend device use the fe_status data type defined
+by</para>
+<programlisting>
+ typedef enum fe_status {
+ FE_HAS_SIGNAL = 0x01, /⋆ found something above the noise level ⋆/
+ FE_HAS_CARRIER = 0x02, /⋆ found a DVB signal ⋆/
+ FE_HAS_VITERBI = 0x04, /⋆ FEC is stable ⋆/
+ FE_HAS_SYNC = 0x08, /⋆ found sync bytes ⋆/
+ FE_HAS_LOCK = 0x10, /⋆ everything's working... ⋆/
+ FE_TIMEDOUT = 0x20, /⋆ no lock within the last ~2 seconds ⋆/
+ FE_REINIT = 0x40 /⋆ frontend was reinitialized, ⋆/
+ } fe_status_t; /⋆ application is recommned to reset ⋆/
+</programlisting>
+<para>to indicate the current state and/or state changes of the frontend hardware.
+</para>
+
+</section>
+
+<section id="dvb-frontend-parameters">
+<title>frontend parameters</title>
+<para>The kind of parameters passed to the frontend device for tuning depend on
+the kind of hardware you are using.</para>
+<para>The struct <constant>dvb_frontend_parameters</constant> uses an
+union with specific per-system parameters. However, as newer delivery systems
+required more data, the structure size weren't enough to fit, and just
+extending its size would break the existing applications. So, those parameters
+were replaced by the usage of <link linkend="FE_GET_SET_PROPERTY">
+<constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></link> ioctl's. The
+new API is flexible enough to add new parameters to existing delivery systems,
+and to add newer delivery systems.</para>
+<para>So, newer applications should use <link linkend="FE_GET_SET_PROPERTY">
+<constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></link> instead, in
+order to be able to support the newer System Delivery like DVB-S2, DVB-T2,
+DVB-C2, ISDB, etc.</para>
+<para>All kinds of parameters are combined as an union in the FrontendParameters structure:</para>
+<programlisting>
+struct dvb_frontend_parameters {
+ uint32_t frequency; /⋆ (absolute) frequency in Hz for QAM/OFDM ⋆/
+ /⋆ intermediate frequency in kHz for QPSK ⋆/
+ fe_spectral_inversion_t inversion;
+ union {
+ struct dvb_qpsk_parameters qpsk;
+ struct dvb_qam_parameters qam;
+ struct dvb_ofdm_parameters ofdm;
+ struct dvb_vsb_parameters vsb;
+ } u;
+};
+</programlisting>
+<para>In the case of QPSK frontends the <constant>frequency</constant> field specifies the intermediate
+frequency, i.e. the offset which is effectively added to the local oscillator frequency (LOF) of
+the LNB. The intermediate frequency has to be specified in units of kHz. For QAM and
+OFDM frontends the <constant>frequency</constant> specifies the absolute frequency and is given in Hz.
+</para>
+<section id="dvb-qpsk-parameters">
+<title>QPSK parameters</title>
+<para>For satellite QPSK frontends you have to use the <constant>dvb_qpsk_parameters</constant> structure:</para>
+<programlisting>
+ struct dvb_qpsk_parameters {
+ uint32_t symbol_rate; /⋆ symbol rate in Symbols per second ⋆/
+ fe_code_rate_t fec_inner; /⋆ forward error correction (see above) ⋆/
+ };
+</programlisting>
+</section>
+<section id="dvb-qam-parameters">
+<title>QAM parameters</title>
+<para>for cable QAM frontend you use the <constant>dvb_qam_parameters</constant> structure:</para>
+<programlisting>
+ struct dvb_qam_parameters {
+ uint32_t symbol_rate; /⋆ symbol rate in Symbols per second ⋆/
+ fe_code_rate_t fec_inner; /⋆ forward error correction (see above) ⋆/
+ fe_modulation_t modulation; /⋆ modulation type (see above) ⋆/
+ };
+</programlisting>
+</section>
+<section id="dvb-vsb-parameters">
+<title>VSB parameters</title>
+<para>ATSC frontends are supported by the <constant>dvb_vsb_parameters</constant> structure:</para>
+<programlisting>
+struct dvb_vsb_parameters {
+ fe_modulation_t modulation; /⋆ modulation type (see above) ⋆/
+};
+</programlisting>
+</section>
+<section id="dvb-ofdm-parameters">
+<title>OFDM parameters</title>
+<para>DVB-T frontends are supported by the <constant>dvb_ofdm_parameters</constant> structure:</para>
+<programlisting>
+ struct dvb_ofdm_parameters {
+ fe_bandwidth_t bandwidth;
+ fe_code_rate_t code_rate_HP; /⋆ high priority stream code rate ⋆/
+ fe_code_rate_t code_rate_LP; /⋆ low priority stream code rate ⋆/
+ fe_modulation_t constellation; /⋆ modulation type (see above) ⋆/
+ fe_transmit_mode_t transmission_mode;
+ fe_guard_interval_t guard_interval;
+ fe_hierarchy_t hierarchy_information;
+ };
+</programlisting>
+</section>
+<section id="fe-spectral-inversion-t">
+<title>frontend spectral inversion</title>
+<para>The Inversion field can take one of these values:
+</para>
+<programlisting>
+typedef enum fe_spectral_inversion {
+ INVERSION_OFF,
+ INVERSION_ON,
+ INVERSION_AUTO
+} fe_spectral_inversion_t;
+</programlisting>
+<para>It indicates if spectral inversion should be presumed or not. In the automatic setting
+(<constant>INVERSION_AUTO</constant>) the hardware will try to figure out the correct setting by
+itself.
+</para>
+</section>
+<section id="fe-code-rate-t">
+<title>frontend code rate</title>
+<para>The possible values for the <constant>fec_inner</constant> field used on
+<link refend="dvb-qpsk-parameters"><constant>struct dvb_qpsk_parameters</constant></link> and
+<link refend="dvb-qam-parameters"><constant>struct dvb_qam_parameters</constant></link> are:
+</para>
+<programlisting>
+typedef enum fe_code_rate {
+ FEC_NONE = 0,
+ FEC_1_2,
+ FEC_2_3,
+ FEC_3_4,
+ FEC_4_5,
+ FEC_5_6,
+ FEC_6_7,
+ FEC_7_8,
+ FEC_8_9,
+ FEC_AUTO,
+ FEC_3_5,
+ FEC_9_10,
+} fe_code_rate_t;
+</programlisting>
+<para>which correspond to error correction rates of 1/2, 2/3, etc., no error correction or auto
+detection.
+</para>
+</section>
+<section id="fe-modulation-t">
+<title>frontend modulation type for QAM, OFDM and VSB</title>
+<para>For cable and terrestrial frontends, e. g. for
+<link refend="dvb-qam-parameters"><constant>struct dvb_qpsk_parameters</constant></link>,
+<link refend="dvb-ofdm-parameters"><constant>struct dvb_qam_parameters</constant></link> and
+<link refend="dvb-vsb-parameters"><constant>struct dvb_qam_parameters</constant></link>,
+it needs to specify the quadrature modulation mode which can be one of the following:
+</para>
+<programlisting>
+ typedef enum fe_modulation {
+ QPSK,
+ QAM_16,
+ QAM_32,
+ QAM_64,
+ QAM_128,
+ QAM_256,
+ QAM_AUTO,
+ VSB_8,
+ VSB_16,
+ PSK_8,
+ APSK_16,
+ APSK_32,
+ DQPSK,
+ } fe_modulation_t;
+</programlisting>
+</section>
+<para>Finally, there are several more parameters for OFDM:
+</para>
+<section id="fe-transmit-mode-t">
+<title>Number of carriers per channel</title>
+<programlisting>
+typedef enum fe_transmit_mode {
+ TRANSMISSION_MODE_2K,
+ TRANSMISSION_MODE_8K,
+ TRANSMISSION_MODE_AUTO,
+ TRANSMISSION_MODE_4K,
+ TRANSMISSION_MODE_1K,
+ TRANSMISSION_MODE_16K,
+ TRANSMISSION_MODE_32K,
+ } fe_transmit_mode_t;
+</programlisting>
+</section>
+<section id="fe-bandwidth-t">
+<title>frontend bandwidth</title>
+<programlisting>
+typedef enum fe_bandwidth {
+ BANDWIDTH_8_MHZ,
+ BANDWIDTH_7_MHZ,
+ BANDWIDTH_6_MHZ,
+ BANDWIDTH_AUTO,
+ BANDWIDTH_5_MHZ,
+ BANDWIDTH_10_MHZ,
+ BANDWIDTH_1_712_MHZ,
+} fe_bandwidth_t;
+</programlisting>
+</section>
+<section id="fe-guard-interval-t">
+<title>frontend guard inverval</title>
+<programlisting>
+typedef enum fe_guard_interval {
+ GUARD_INTERVAL_1_32,
+ GUARD_INTERVAL_1_16,
+ GUARD_INTERVAL_1_8,
+ GUARD_INTERVAL_1_4,
+ GUARD_INTERVAL_AUTO,
+ GUARD_INTERVAL_1_128,
+ GUARD_INTERVAL_19_128,
+ GUARD_INTERVAL_19_256,
+} fe_guard_interval_t;
+</programlisting>
+</section>
+<section id="fe-hierarchy-t">
+<title>frontend hierarchy</title>
+<programlisting>
+typedef enum fe_hierarchy {
+ HIERARCHY_NONE,
+ HIERARCHY_1,
+ HIERARCHY_2,
+ HIERARCHY_4,
+ HIERARCHY_AUTO
+ } fe_hierarchy_t;
+</programlisting>
+</section>
+
+</section>
+
+<section id="dvb-frontend-event">
+<title>frontend events</title>
+ <programlisting>
+ struct dvb_frontend_event {
+ fe_status_t status;
+ struct dvb_frontend_parameters parameters;
+ };
+</programlisting>
+ </section>
+</section>
+
+
+<section id="frontend_fcalls">
+<title>Frontend Function Calls</title>
+
+<section id="frontend_f_open">
+<title>open()</title>
+<para>DESCRIPTION</para>
+<informaltable><tgroup cols="1"><tbody><row>
+<entry align="char">
+<para>This system call opens a named frontend device (/dev/dvb/adapter0/frontend0)
+ for subsequent use. Usually the first thing to do after a successful open is to
+ find out the frontend type with <link linkend="FE_GET_INFO">FE_GET_INFO</link>.</para>
+<para>The device can be opened in read-only mode, which only allows monitoring of
+ device status and statistics, or read/write mode, which allows any kind of use
+ (e.g. performing tuning operations.)
+</para>
+<para>In a system with multiple front-ends, it is usually the case that multiple devices
+ cannot be open in read/write mode simultaneously. As long as a front-end
+ device is opened in read/write mode, other open() calls in read/write mode will
+ either fail or block, depending on whether non-blocking or blocking mode was
+ specified. A front-end device opened in blocking mode can later be put into
+ non-blocking mode (and vice versa) using the F_SETFL command of the fcntl
+ system call. This is a standard system call, documented in the Linux manual
+ page for fcntl. When an open() call has succeeded, the device will be ready
+ for use in the specified mode. This implies that the corresponding hardware is
+ powered up, and that other front-ends may have been powered down to make
+ that possible.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>SYNOPSIS</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int open(const char ⋆deviceName, int flags);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>const char
+ *deviceName</para>
+</entry><entry
+ align="char">
+<para>Name of specific video device.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int flags</para>
+</entry><entry
+ align="char">
+<para>A bit-wise OR of the following flags:</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_RDONLY read-only access</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_RDWR read/write access</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_NONBLOCK open in non-blocking mode</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>(blocking mode is the default)</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>ENODEV</para>
+</entry><entry
+ align="char">
+<para>Device driver not loaded/available.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EINTERNAL</para>
+</entry><entry
+ align="char">
+<para>Internal error.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EBUSY</para>
+</entry><entry
+ align="char">
+<para>Device or resource busy.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>Invalid argument.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+</section>
+
+<section id="frontend_f_close">
+<title>close()</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This system call closes a previously opened front-end device. After closing
+ a front-end device, its corresponding hardware might be powered down
+ automatically.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int close(int fd);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EBADF</para>
+</entry><entry
+ align="char">
+<para>fd is not a valid open file descriptor.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+</section>
+
+<section id="FE_READ_STATUS">
+<title>FE_READ_STATUS</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call returns status information about the front-end. This call only
+ requires read-only access to the device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = <link linkend="FE_READ_STATUS">FE_READ_STATUS</link>,
+ fe_status_t ⋆status);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_READ_STATUS">FE_READ_STATUS</link> for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct fe_status_t
+ *status</para>
+</entry><entry
+ align="char">
+<para>Points to the location where the front-end status word is
+ to be stored.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EBADF</para>
+</entry><entry
+ align="char">
+<para>fd is not a valid open file descriptor.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EFAULT</para>
+</entry><entry
+ align="char">
+<para>status points to invalid address.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+</section>
+
+<section id="FE_READ_BER">
+<title>FE_READ_BER</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call returns the bit error rate for the signal currently
+ received/demodulated by the front-end. For this command, read-only access to
+ the device is sufficient.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = <link linkend="FE_READ_BER">FE_READ_BER</link>,
+ uint32_t ⋆ber);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_READ_BER">FE_READ_BER</link> for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>uint32_t *ber</para>
+</entry><entry
+ align="char">
+<para>The bit error rate is stored into *ber.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+</section>
+
+<section id="FE_READ_SNR">
+<title>FE_READ_SNR</title>
+
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call returns the signal-to-noise ratio for the signal currently received
+ by the front-end. For this command, read-only access to the device is sufficient.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = <link linkend="FE_READ_SNR">FE_READ_SNR</link>, int16_t
+ ⋆snr);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_READ_SNR">FE_READ_SNR</link> for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int16_t *snr</para>
+</entry><entry
+ align="char">
+<para>The signal-to-noise ratio is stored into *snr.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+</section>
+
+<section id="FE_READ_SIGNAL_STRENGTH">
+<title>FE_READ_SIGNAL_STRENGTH</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call returns the signal strength value for the signal currently received
+ by the front-end. For this command, read-only access to the device is sufficient.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl( int fd, int request =
+ <link linkend="FE_READ_SIGNAL_STRENGTH">FE_READ_SIGNAL_STRENGTH</link>, int16_t ⋆strength);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_READ_SIGNAL_STRENGTH">FE_READ_SIGNAL_STRENGTH</link> for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int16_t *strength</para>
+</entry><entry
+ align="char">
+<para>The signal strength value is stored into *strength.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+</section>
+
+<section id="FE_READ_UNCORRECTED_BLOCKS">
+<title>FE_READ_UNCORRECTED_BLOCKS</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call returns the number of uncorrected blocks detected by the device
+ driver during its lifetime. For meaningful measurements, the increment in block
+ count during a specific time interval should be calculated. For this command,
+ read-only access to the device is sufficient.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>Note that the counter will wrap to zero after its maximum count has been
+ reached.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl( int fd, int request =
+ <link linkend="FE_READ_UNCORRECTED_BLOCKS">FE_READ_UNCORRECTED_BLOCKS</link>, uint32_t ⋆ublocks);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_READ_UNCORRECTED_BLOCKS">FE_READ_UNCORRECTED_BLOCKS</link> for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>uint32_t *ublocks</para>
+</entry><entry
+ align="char">
+<para>The total number of uncorrected blocks seen by the driver
+ so far.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+</section>
+
+<section id="FE_SET_FRONTEND">
+<title>FE_SET_FRONTEND</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call starts a tuning operation using specified parameters. The result
+ of this call will be successful if the parameters were valid and the tuning could
+ be initiated. The result of the tuning operation in itself, however, will arrive
+ asynchronously as an event (see documentation for <link linkend="FE_GET_EVENT">FE_GET_EVENT</link> and
+ FrontendEvent.) If a new <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link> operation is initiated before
+ the previous one was completed, the previous operation will be aborted in favor
+ of the new one. This command requires read/write access to the device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link>,
+ struct dvb_frontend_parameters ⋆p);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link> for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct
+ dvb_frontend_parameters
+ *p</para>
+</entry><entry
+ align="char">
+<para>Points to parameters for tuning operation.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>Maximum supported symbol rate reached.</para>
+</entry>
+</row></tbody></tgroup></informaltable>
+</section>
+
+<section id="FE_GET_FRONTEND">
+<title>FE_GET_FRONTEND</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call queries the currently effective frontend parameters. For this
+ command, read-only access to the device is sufficient.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = <link linkend="FE_GET_FRONTEND">FE_GET_FRONTEND</link>,
+ struct dvb_frontend_parameters ⋆p);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link> for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct
+ dvb_frontend_parameters
+ *p</para>
+</entry><entry
+ align="char">
+<para>Points to parameters for tuning operation.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>Maximum supported symbol rate reached.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section>
+
+<section id="FE_GET_EVENT">
+<title>FE_GET_EVENT</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call returns a frontend event if available. If an event is not
+ available, the behavior depends on whether the device is in blocking or
+ non-blocking mode. In the latter case, the call fails immediately with errno
+ set to EWOULDBLOCK. In the former case, the call blocks until an event
+ becomes available.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>The standard Linux poll() and/or select() system calls can be used with the
+ device file descriptor to watch for new events. For select(), the file descriptor
+ should be included in the exceptfds argument, and for poll(), POLLPRI should
+ be specified as the wake-up condition. Since the event queue allocated is
+ rather small (room for 8 events), the queue must be serviced regularly to avoid
+ overflow. If an overflow happens, the oldest event is discarded from the queue,
+ and an error (EOVERFLOW) occurs the next time the queue is read. After
+ reporting the error condition in this fashion, subsequent
+ <link linkend="FE_GET_EVENT">FE_GET_EVENT</link>
+ calls will return events from the queue as usual.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>For the sake of implementation simplicity, this command requires read/write
+ access to the device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = QPSK_GET_EVENT,
+ struct dvb_frontend_event ⋆ev);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_GET_EVENT">FE_GET_EVENT</link> for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct
+ dvb_frontend_event
+ *ev</para>
+</entry><entry
+ align="char">
+<para>Points to the location where the event,</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>if any, is to be stored.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EWOULDBLOCK</para>
+</entry><entry
+ align="char">
+<para>There is no event pending, and the device is in
+ non-blocking mode.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EOVERFLOW</para>
+</entry><entry
+ align="char">
+<para>Overflow in event queue - one or more events were lost.</para>
+</entry>
+</row></tbody></tgroup></informaltable>
+</section>
+
+<section id="FE_GET_INFO">
+<title>FE_GET_INFO</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call returns information about the front-end. This call only requires
+ read-only access to the device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para> int ioctl(int fd, int request = <link linkend="FE_GET_INFO">FE_GET_INFO</link>, struct
+ dvb_frontend_info ⋆info);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_GET_INFO">FE_GET_INFO</link> for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct
+ dvb_frontend_info
+ *info</para>
+</entry><entry
+ align="char">
+<para>Points to the location where the front-end information is
+ to be stored.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="FE_DISEQC_RESET_OVERLOAD">
+<title>FE_DISEQC_RESET_OVERLOAD</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>If the bus has been automatically powered off due to power overload, this ioctl
+ call restores the power to the bus. The call requires read/write access to the
+ device. This call has no effect if the device is manually powered off. Not all
+ DVB adapters support this ioctl.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ <link linkend="FE_DISEQC_RESET_OVERLOAD">FE_DISEQC_RESET_OVERLOAD</link>);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_DISEQC_RESET_OVERLOAD">FE_DISEQC_RESET_OVERLOAD</link> for this
+ command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+</section>
+
+<section id="FE_DISEQC_SEND_MASTER_CMD">
+<title>FE_DISEQC_SEND_MASTER_CMD</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call is used to send a a DiSEqC command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ <link linkend="FE_DISEQC_SEND_MASTER_CMD">FE_DISEQC_SEND_MASTER_CMD</link>, struct
+ dvb_diseqc_master_cmd ⋆cmd);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_DISEQC_SEND_MASTER_CMD">FE_DISEQC_SEND_MASTER_CMD</link> for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct
+ dvb_diseqc_master_cmd
+ *cmd</para>
+</entry><entry
+ align="char">
+<para>Pointer to the command to be transmitted.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+</section>
+
+<section id="FE_DISEQC_RECV_SLAVE_REPLY">
+<title>FE_DISEQC_RECV_SLAVE_REPLY</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call is used to receive reply to a DiSEqC 2.0 command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ <link linkend="FE_DISEQC_RECV_SLAVE_REPLY">FE_DISEQC_RECV_SLAVE_REPLY</link>, struct
+ dvb_diseqc_slave_reply ⋆reply);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_DISEQC_RECV_SLAVE_REPLY">FE_DISEQC_RECV_SLAVE_REPLY</link> for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct
+ dvb_diseqc_slave_reply
+ *reply</para>
+</entry><entry
+ align="char">
+<para>Pointer to the command to be received.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="FE_DISEQC_SEND_BURST">
+<title>FE_DISEQC_SEND_BURST</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call is used to send a 22KHz tone burst.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ <link linkend="FE_DISEQC_SEND_BURST">FE_DISEQC_SEND_BURST</link>, fe_sec_mini_cmd_t burst);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_DISEQC_SEND_BURST">FE_DISEQC_SEND_BURST</link> for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>fe_sec_mini_cmd_t
+ burst</para>
+</entry><entry
+ align="char">
+<para>burst A or B.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+</section>
+
+<section id="FE_SET_TONE">
+<title>FE_SET_TONE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This call is used to set the generation of the continuous 22kHz tone. This call
+ requires read/write permissions.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = <link linkend="FE_SET_TONE">FE_SET_TONE</link>,
+ fe_sec_tone_mode_t tone);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_SET_TONE">FE_SET_TONE</link> for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>fe_sec_tone_mode_t
+ tone</para>
+</entry><entry
+ align="char">
+<para>The requested tone generation mode (on/off).</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="FE_SET_VOLTAGE">
+<title>FE_SET_VOLTAGE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This call is used to set the bus voltage. This call requires read/write
+ permissions.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = <link linkend="FE_SET_VOLTAGE">FE_SET_VOLTAGE</link>,
+ fe_sec_voltage_t voltage);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_SET_VOLTAGE">FE_SET_VOLTAGE</link> for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>fe_sec_voltage_t
+ voltage</para>
+</entry><entry
+ align="char">
+<para>The requested bus voltage.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+</section>
+
+<section id="FE_ENABLE_HIGH_LNB_VOLTAGE">
+<title>FE_ENABLE_HIGH_LNB_VOLTAGE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>If high != 0 enables slightly higher voltages instead of 13/18V (to compensate
+ for long cables). This call requires read/write permissions. Not all DVB
+ adapters support this ioctl.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ <link linkend="FE_ENABLE_HIGH_LNB_VOLTAGE">FE_ENABLE_HIGH_LNB_VOLTAGE</link>, int high);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals <link linkend="FE_SET_VOLTAGE">FE_SET_VOLTAGE</link> for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int high</para>
+</entry><entry
+ align="char">
+<para>The requested bus voltage.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+</section>
+
+<section id="FE_SET_FRONTEND_TUNE_MODE">
+<title>FE_SET_FRONTEND_TUNE_MODE</title>
+<para>DESCRIPTION</para>
+<informaltable><tgroup cols="1"><tbody><row>
+<entry align="char">
+<para>Allow setting tuner mode flags to the frontend.</para>
+</entry>
+</row></tbody></tgroup></informaltable>
+
+<para>SYNOPSIS</para>
+<informaltable><tgroup cols="1"><tbody><row>
+<entry align="char">
+<para>int ioctl(int fd, int request =
+<link linkend="FE_SET_FRONTEND_TUNE_MODE">FE_SET_FRONTEND_TUNE_MODE</link>, unsigned int flags);</para>
+</entry>
+</row></tbody></tgroup></informaltable>
+
+<para>PARAMETERS</para>
+<informaltable><tgroup cols="2"><tbody><row>
+<entry align="char">
+ <para>unsigned int flags</para>
+</entry>
+<entry align="char">
+<para>
+FE_TUNE_MODE_ONESHOT When set, this flag will disable any zigzagging or other "normal" tuning behaviour. Additionally, there will be no automatic monitoring of the lock status, and hence no frontend events will be generated. If a frontend device is closed, this flag will be automatically turned off when the device is reopened read-write.
+</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+</section>
+
+<section id="FE_DISHNETWORK_SEND_LEGACY_CMD">
+ <title>FE_DISHNETWORK_SEND_LEGACY_CMD</title>
+<para>DESCRIPTION</para>
+<informaltable><tgroup cols="1"><tbody><row>
+<entry align="char">
+<para>WARNING: This is a very obscure legacy command, used only at stv0299 driver. Should not be used on newer drivers.</para>
+<para>It provides a non-standard method for selecting Diseqc voltage on the frontend, for Dish Network legacy switches.</para>
+<para>As support for this ioctl were added in 2004, this means that such dishes were already legacy in 2004.</para>
+</entry>
+</row></tbody></tgroup></informaltable>
+
+<para>SYNOPSIS</para>
+<informaltable><tgroup cols="1"><tbody><row>
+<entry align="char">
+<para>int ioctl(int fd, int request =
+ <link linkend="FE_DISHNETWORK_SEND_LEGACY_CMD">FE_DISHNETWORK_SEND_LEGACY_CMD</link>, unsigned long cmd);</para>
+</entry>
+</row></tbody></tgroup></informaltable>
+
+<para>PARAMETERS</para>
+<informaltable><tgroup cols="2"><tbody><row>
+<entry align="char">
+ <para>unsigned long cmd</para>
+</entry>
+<entry align="char">
+<para>
+sends the specified raw cmd to the dish via DISEqC.
+</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+&return-value-dvb;
+</section>
+
+</section>
+
+&sub-dvbproperty;
diff --git a/Documentation/DocBook/media/dvb/intro.xml b/Documentation/DocBook/media/dvb/intro.xml
new file mode 100644
index 0000000..170064a
--- /dev/null
+++ b/Documentation/DocBook/media/dvb/intro.xml
@@ -0,0 +1,212 @@
+<title>Introduction</title>
+
+<section id="requisites">
+<title>What you need to know</title>
+
+<para>The reader of this document is required to have some knowledge in
+the area of digital video broadcasting (DVB) and should be familiar with
+part I of the MPEG2 specification ISO/IEC 13818 (aka ITU-T H.222), i.e
+you should know what a program/transport stream (PS/TS) is and what is
+meant by a packetized elementary stream (PES) or an I-frame.</para>
+
+<para>Various DVB standards documents are available from
+<ulink url="http://www.dvb.org" /> and/or
+<ulink url="http://www.etsi.org" />.</para>
+
+<para>It is also necessary to know how to access unix/linux devices and
+how to use ioctl calls. This also includes the knowledge of C or C++.
+</para>
+</section>
+
+<section id="history">
+<title>History</title>
+
+<para>The first API for DVB cards we used at Convergence in late 1999
+was an extension of the Video4Linux API which was primarily developed
+for frame grabber cards. As such it was not really well suited to be
+used for DVB cards and their new features like recording MPEG streams
+and filtering several section and PES data streams at the same time.
+</para>
+
+<para>In early 2000, we were approached by Nokia with a proposal for a
+new standard Linux DVB API. As a commitment to the development of
+terminals based on open standards, Nokia and Convergence made it
+available to all Linux developers and published it on
+<ulink url="http://www.linuxtv.org/" /> in September 2000.
+Convergence is the maintainer of the Linux DVB API. Together with the
+LinuxTV community (i.e. you, the reader of this document), the Linux DVB
+API will be constantly reviewed and improved. With the Linux driver for
+the Siemens/Hauppauge DVB PCI card Convergence provides a first
+implementation of the Linux DVB API.</para>
+</section>
+
+<section id="overview">
+<title>Overview</title>
+
+<figure id="stb_components">
+<title>Components of a DVB card/STB</title>
+<mediaobject>
+<imageobject>
+<imagedata fileref="dvbstb.pdf" format="PS" />
+</imageobject>
+<imageobject>
+<imagedata fileref="dvbstb.png" format="PNG" />
+</imageobject>
+</mediaobject>
+</figure>
+
+<para>A DVB PCI card or DVB set-top-box (STB) usually consists of the
+following main hardware components: </para>
+
+<itemizedlist>
+ <listitem>
+
+<para>Frontend consisting of tuner and DVB demodulator</para>
+
+<para>Here the raw signal reaches the DVB hardware from a satellite dish
+or antenna or directly from cable. The frontend down-converts and
+demodulates this signal into an MPEG transport stream (TS). In case of a
+satellite frontend, this includes a facility for satellite equipment
+control (SEC), which allows control of LNB polarization, multi feed
+switches or dish rotors.</para>
+
+</listitem>
+ <listitem>
+
+<para>Conditional Access (CA) hardware like CI adapters and smartcard slots
+</para>
+
+<para>The complete TS is passed through the CA hardware. Programs to
+which the user has access (controlled by the smart card) are decoded in
+real time and re-inserted into the TS.</para>
+
+</listitem>
+ <listitem>
+ <para>Demultiplexer which filters the incoming DVB stream</para>
+
+<para>The demultiplexer splits the TS into its components like audio and
+video streams. Besides usually several of such audio and video streams
+it also contains data streams with information about the programs
+offered in this or other streams of the same provider.</para>
+
+</listitem>
+<listitem>
+
+<para>MPEG2 audio and video decoder</para>
+
+<para>The main targets of the demultiplexer are the MPEG2 audio and
+video decoders. After decoding they pass on the uncompressed audio and
+video to the computer screen or (through a PAL/NTSC encoder) to a TV
+set.</para>
+
+
+</listitem>
+</itemizedlist>
+
+<para><xref linkend="stb_components" /> shows a crude schematic of the control and data flow
+between those components.</para>
+
+<para>On a DVB PCI card not all of these have to be present since some
+functionality can be provided by the main CPU of the PC (e.g. MPEG
+picture and sound decoding) or is not needed (e.g. for data-only uses
+like “internet over satellite”). Also not every card or STB
+provides conditional access hardware.</para>
+
+</section>
+
+<section id="dvb_devices">
+<title>Linux DVB Devices</title>
+
+<para>The Linux DVB API lets you control these hardware components
+through currently six Unix-style character devices for video, audio,
+frontend, demux, CA and IP-over-DVB networking. The video and audio
+devices control the MPEG2 decoder hardware, the frontend device the
+tuner and the DVB demodulator. The demux device gives you control over
+the PES and section filters of the hardware. If the hardware does not
+support filtering these filters can be implemented in software. Finally,
+the CA device controls all the conditional access capabilities of the
+hardware. It can depend on the individual security requirements of the
+platform, if and how many of the CA functions are made available to the
+application through this device.</para>
+
+<para>All devices can be found in the <emphasis role="tt">/dev</emphasis>
+tree under <emphasis role="tt">/dev/dvb</emphasis>. The individual devices
+are called:</para>
+
+<itemizedlist>
+<listitem>
+
+<para><emphasis role="tt">/dev/dvb/adapterN/audioM</emphasis>,</para>
+</listitem>
+<listitem>
+<para><emphasis role="tt">/dev/dvb/adapterN/videoM</emphasis>,</para>
+</listitem>
+<listitem>
+<para><emphasis role="tt">/dev/dvb/adapterN/frontendM</emphasis>,</para>
+</listitem>
+ <listitem>
+
+<para><emphasis role="tt">/dev/dvb/adapterN/netM</emphasis>,</para>
+</listitem>
+ <listitem>
+
+<para><emphasis role="tt">/dev/dvb/adapterN/demuxM</emphasis>,</para>
+</listitem>
+ <listitem>
+
+<para><emphasis role="tt">/dev/dvb/adapterN/dvrM</emphasis>,</para>
+</listitem>
+ <listitem>
+
+<para><emphasis role="tt">/dev/dvb/adapterN/caM</emphasis>,</para></listitem></itemizedlist>
+
+<para>where N enumerates the DVB PCI cards in a system starting
+from 0, and M enumerates the devices of each type within each
+adapter, starting from 0, too. We will omit the “<emphasis
+role="tt">/dev/dvb/adapterN/</emphasis>” in the further dicussion
+of these devices. The naming scheme for the devices is the same wheter
+devfs is used or not.</para>
+
+<para>More details about the data structures and function calls of all
+the devices are described in the following chapters.</para>
+
+</section>
+
+<section id="include_files">
+<title>API include files</title>
+
+<para>For each of the DVB devices a corresponding include file exists.
+The DVB API include files should be included in application sources with
+a partial path like:</para>
+
+<programlisting>
+ #include <linux/dvb/audio.h>
+</programlisting>
+<programlisting>
+ #include <linux/dvb/ca.h>
+</programlisting>
+<programlisting>
+ #include <linux/dvb/dmx.h>
+</programlisting>
+<programlisting>
+ #include <linux/dvb/frontend.h>
+</programlisting>
+<programlisting>
+ #include <linux/dvb/net.h>
+</programlisting>
+<programlisting>
+ #include <linux/dvb/osd.h>
+</programlisting>
+<programlisting>
+ #include <linux/dvb/video.h>
+</programlisting>
+
+<para>To enable applications to support different API version, an
+additional include file <emphasis
+role="tt">linux/dvb/version.h</emphasis> exists, which defines the
+constant <emphasis role="tt">DVB_API_VERSION</emphasis>. This document
+describes <emphasis role="tt">DVB_API_VERSION 5.4</emphasis>.
+</para>
+
+</section>
+
diff --git a/Documentation/DocBook/dvb/kdapi.xml b/Documentation/DocBook/media/dvb/kdapi.xml
similarity index 100%
rename from Documentation/DocBook/dvb/kdapi.xml
rename to Documentation/DocBook/media/dvb/kdapi.xml
diff --git a/Documentation/DocBook/media/dvb/net.xml b/Documentation/DocBook/media/dvb/net.xml
new file mode 100644
index 0000000..67d37e5
--- /dev/null
+++ b/Documentation/DocBook/media/dvb/net.xml
@@ -0,0 +1,29 @@
+<title>DVB Network API</title>
+<para>The DVB net device enables feeding of MPE (multi protocol encapsulation) packets
+received via DVB into the Linux network protocol stack, e.g. for internet via satellite
+applications. It can be accessed through <emphasis role="tt">/dev/dvb/adapter0/net0</emphasis>. Data types and
+and ioctl definitions can be accessed by including <emphasis role="tt">linux/dvb/net.h</emphasis> in your
+application.
+</para>
+<section id="dvb_net_types">
+<title>DVB Net Data Types</title>
+
+<section id="dvb-net-if">
+<title>struct dvb_net_if</title>
+<programlisting>
+struct dvb_net_if {
+ __u16 pid;
+ __u16 if_num;
+ __u8 feedtype;
+#define DVB_NET_FEEDTYPE_MPE 0 /⋆ multi protocol encapsulation ⋆/
+#define DVB_NET_FEEDTYPE_ULE 1 /⋆ ultra lightweight encapsulation ⋆/
+};
+</programlisting>
+</section>
+
+</section>
+<section id="net_fcalls">
+<title>DVB net Function Calls</title>
+<para>To be written…
+</para>
+</section>
diff --git a/Documentation/DocBook/media/dvb/video.xml b/Documentation/DocBook/media/dvb/video.xml
new file mode 100644
index 0000000..25fb823
--- /dev/null
+++ b/Documentation/DocBook/media/dvb/video.xml
@@ -0,0 +1,1657 @@
+<title>DVB Video Device</title>
+<para>The DVB video device controls the MPEG2 video decoder of the DVB hardware. It
+can be accessed through <emphasis role="tt">/dev/dvb/adapter0/video0</emphasis>. Data types and and
+ioctl definitions can be accessed by including <emphasis role="tt">linux/dvb/video.h</emphasis> in your
+application.
+</para>
+<para>Note that the DVB video device only controls decoding of the MPEG video stream, not
+its presentation on the TV or computer screen. On PCs this is typically handled by an
+associated video4linux device, e.g. <emphasis role="tt">/dev/video</emphasis>, which allows scaling and defining output
+windows.
+</para>
+<para>Some DVB cards don’t have their own MPEG decoder, which results in the omission of
+the audio and video device as well as the video4linux device.
+</para>
+<para>The ioctls that deal with SPUs (sub picture units) and navigation packets are only
+supported on some MPEG decoders made for DVD playback.
+</para>
+<section id="video_types">
+<title>Video Data Types</title>
+
+<section id="video-format-t">
+<title>video_format_t</title>
+<para>The <emphasis role="tt">video_format_t</emphasis> data type defined by
+</para>
+<programlisting>
+typedef enum {
+ VIDEO_FORMAT_4_3, /⋆ Select 4:3 format ⋆/
+ VIDEO_FORMAT_16_9, /⋆ Select 16:9 format. ⋆/
+ VIDEO_FORMAT_221_1 /⋆ 2.21:1 ⋆/
+} video_format_t;
+</programlisting>
+<para>is used in the VIDEO_SET_FORMAT function (??) to tell the driver which aspect ratio
+the output hardware (e.g. TV) has. It is also used in the data structures video_status
+(??) returned by VIDEO_GET_STATUS (??) and video_event (??) returned by
+VIDEO_GET_EVENT (??) which report about the display format of the current video
+stream.
+</para>
+</section>
+
+<section id="video-displayformat-t">
+<title>video_displayformat_t</title>
+<para>In case the display format of the video stream and of the display hardware differ the
+application has to specify how to handle the cropping of the picture. This can be done using
+the VIDEO_SET_DISPLAY_FORMAT call (??) which accepts
+</para>
+<programlisting>
+typedef enum {
+ VIDEO_PAN_SCAN, /⋆ use pan and scan format ⋆/
+ VIDEO_LETTER_BOX, /⋆ use letterbox format ⋆/
+ VIDEO_CENTER_CUT_OUT /⋆ use center cut out format ⋆/
+} video_displayformat_t;
+</programlisting>
+<para>as argument.
+</para>
+</section>
+
+<section id="video-stream-source-t">
+<title>video stream source</title>
+<para>The video stream source is set through the VIDEO_SELECT_SOURCE call and can take
+the following values, depending on whether we are replaying from an internal (demuxer) or
+external (user write) source.
+</para>
+<programlisting>
+typedef enum {
+ VIDEO_SOURCE_DEMUX, /⋆ Select the demux as the main source ⋆/
+ VIDEO_SOURCE_MEMORY /⋆ If this source is selected, the stream
+ comes from the user through the write
+ system call ⋆/
+} video_stream_source_t;
+</programlisting>
+<para>VIDEO_SOURCE_DEMUX selects the demultiplexer (fed either by the frontend or the
+DVR device) as the source of the video stream. If VIDEO_SOURCE_MEMORY
+is selected the stream comes from the application through the <emphasis role="tt">write()</emphasis> system
+call.
+</para>
+</section>
+
+<section id="video-play-state-t">
+<title>video play state</title>
+<para>The following values can be returned by the VIDEO_GET_STATUS call representing the
+state of video playback.
+</para>
+<programlisting>
+typedef enum {
+ VIDEO_STOPPED, /⋆ Video is stopped ⋆/
+ VIDEO_PLAYING, /⋆ Video is currently playing ⋆/
+ VIDEO_FREEZED /⋆ Video is freezed ⋆/
+} video_play_state_t;
+</programlisting>
+</section>
+
+<section id="video-command">
+<para>The structure must be zeroed before use by the application
+This ensures it can be extended safely in the future.</para>
+<title>struct video-command</title>
+<programlisting>
+struct video_command {
+ __u32 cmd;
+ __u32 flags;
+ union {
+ struct {
+ __u64 pts;
+ } stop;
+
+ struct {
+ /⋆ 0 or 1000 specifies normal speed,
+ 1 specifies forward single stepping,
+ -1 specifies backward single stepping,
+ >>1: playback at speed/1000 of the normal speed,
+ <-1: reverse playback at (-speed/1000) of the normal speed. ⋆/
+ __s32 speed;
+ __u32 format;
+ } play;
+
+ struct {
+ __u32 data[16];
+ } raw;
+ };
+};
+</programlisting>
+</section>
+
+<section id="video-size-t">
+<title>struct video_size-t</title>
+<programlisting>
+typedef struct {
+ int w;
+ int h;
+ video_format_t aspect_ratio;
+} video_size_t;
+</programlisting>
+</section>
+
+
+<section id="video-event">
+<title>struct video_event</title>
+<para>The following is the structure of a video event as it is returned by the VIDEO_GET_EVENT
+call.
+</para>
+<programlisting>
+struct video_event {
+ __s32 type;
+#define VIDEO_EVENT_SIZE_CHANGED 1
+#define VIDEO_EVENT_FRAME_RATE_CHANGED 2
+#define VIDEO_EVENT_DECODER_STOPPED 3
+#define VIDEO_EVENT_VSYNC 4
+ __kernel_time_t timestamp;
+ union {
+ video_size_t size;
+ unsigned int frame_rate; /⋆ in frames per 1000sec ⋆/
+ unsigned char vsync_field; /⋆ unknown/odd/even/progressive ⋆/
+ } u;
+};
+</programlisting>
+</section>
+
+<section id="video-status">
+<title>struct video_status</title>
+<para>The VIDEO_GET_STATUS call returns the following structure informing about various
+states of the playback operation.
+</para>
+<programlisting>
+struct video_status {
+ int video_blank; /⋆ blank video on freeze? ⋆/
+ video_play_state_t play_state; /⋆ current state of playback ⋆/
+ video_stream_source_t stream_source; /⋆ current source (demux/memory) ⋆/
+ video_format_t video_format; /⋆ current aspect ratio of stream ⋆/
+ video_displayformat_t display_format;/⋆ selected cropping mode ⋆/
+};
+</programlisting>
+<para>If video_blank is set video will be blanked out if the channel is changed or if playback is
+stopped. Otherwise, the last picture will be displayed. play_state indicates if the video is
+currently frozen, stopped, or being played back. The stream_source corresponds to the seleted
+source for the video stream. It can come either from the demultiplexer or from memory.
+The video_format indicates the aspect ratio (one of 4:3 or 16:9) of the currently
+played video stream. Finally, display_format corresponds to the selected cropping
+mode in case the source video format is not the same as the format of the output
+device.
+</para>
+</section>
+
+<section id="video-still-picture">
+<title>struct video_still_picture</title>
+<para>An I-frame displayed via the VIDEO_STILLPICTURE call is passed on within the
+following structure.
+</para>
+<programlisting>
+/⋆ pointer to and size of a single iframe in memory ⋆/
+struct video_still_picture {
+ char ⋆iFrame; /⋆ pointer to a single iframe in memory ⋆/
+ int32_t size;
+};
+</programlisting>
+</section>
+
+<section id="video_caps">
+<title>video capabilities</title>
+<para>A call to VIDEO_GET_CAPABILITIES returns an unsigned integer with the following
+bits set according to the hardwares capabilities.
+</para>
+<programlisting>
+ /⋆ bit definitions for capabilities: ⋆/
+ /⋆ can the hardware decode MPEG1 and/or MPEG2? ⋆/
+ #define VIDEO_CAP_MPEG1 1
+ #define VIDEO_CAP_MPEG2 2
+ /⋆ can you send a system and/or program stream to video device?
+ (you still have to open the video and the audio device but only
+ send the stream to the video device) ⋆/
+ #define VIDEO_CAP_SYS 4
+ #define VIDEO_CAP_PROG 8
+ /⋆ can the driver also handle SPU, NAVI and CSS encoded data?
+ (CSS API is not present yet) ⋆/
+ #define VIDEO_CAP_SPU 16
+ #define VIDEO_CAP_NAVI 32
+ #define VIDEO_CAP_CSS 64
+</programlisting>
+</section>
+
+<section id="video-system">
+<title>video system</title>
+<para>A call to VIDEO_SET_SYSTEM sets the desired video system for TV output. The
+following system types can be set:
+</para>
+<programlisting>
+typedef enum {
+ VIDEO_SYSTEM_PAL,
+ VIDEO_SYSTEM_NTSC,
+ VIDEO_SYSTEM_PALN,
+ VIDEO_SYSTEM_PALNc,
+ VIDEO_SYSTEM_PALM,
+ VIDEO_SYSTEM_NTSC60,
+ VIDEO_SYSTEM_PAL60,
+ VIDEO_SYSTEM_PALM60
+} video_system_t;
+</programlisting>
+</section>
+
+<section id="video-highlight">
+<title>struct video_highlight</title>
+<para>Calling the ioctl VIDEO_SET_HIGHLIGHTS posts the SPU highlight information. The
+call expects the following format for that information:
+</para>
+<programlisting>
+ typedef
+ struct video_highlight {
+ boolean active; /⋆ 1=show highlight, 0=hide highlight ⋆/
+ uint8_t contrast1; /⋆ 7- 4 Pattern pixel contrast ⋆/
+ /⋆ 3- 0 Background pixel contrast ⋆/
+ uint8_t contrast2; /⋆ 7- 4 Emphasis pixel-2 contrast ⋆/
+ /⋆ 3- 0 Emphasis pixel-1 contrast ⋆/
+ uint8_t color1; /⋆ 7- 4 Pattern pixel color ⋆/
+ /⋆ 3- 0 Background pixel color ⋆/
+ uint8_t color2; /⋆ 7- 4 Emphasis pixel-2 color ⋆/
+ /⋆ 3- 0 Emphasis pixel-1 color ⋆/
+ uint32_t ypos; /⋆ 23-22 auto action mode ⋆/
+ /⋆ 21-12 start y ⋆/
+ /⋆ 9- 0 end y ⋆/
+ uint32_t xpos; /⋆ 23-22 button color number ⋆/
+ /⋆ 21-12 start x ⋆/
+ /⋆ 9- 0 end x ⋆/
+ } video_highlight_t;
+</programlisting>
+
+</section>
+<section id="video-spu">
+<title>video SPU</title>
+<para>Calling VIDEO_SET_SPU deactivates or activates SPU decoding, according to the
+following format:
+</para>
+<programlisting>
+ typedef
+ struct video_spu {
+ boolean active;
+ int stream_id;
+ } video_spu_t;
+</programlisting>
+
+</section>
+<section id="video-spu-palette">
+<title>video SPU palette</title>
+<para>The following structure is used to set the SPU palette by calling VIDEO_SPU_PALETTE:
+</para>
+<programlisting>
+ typedef
+ struct video_spu_palette{
+ int length;
+ uint8_t ⋆palette;
+ } video_spu_palette_t;
+</programlisting>
+
+</section>
+<section id="video-navi-pack">
+<title>video NAVI pack</title>
+<para>In order to get the navigational data the following structure has to be passed to the ioctl
+VIDEO_GET_NAVI:
+</para>
+<programlisting>
+ typedef
+ struct video_navi_pack{
+ int length; /⋆ 0 ... 1024 ⋆/
+ uint8_t data[1024];
+ } video_navi_pack_t;
+</programlisting>
+</section>
+
+
+<section id="video-attributes-t">
+<title>video attributes</title>
+<para>The following attributes can be set by a call to VIDEO_SET_ATTRIBUTES:
+</para>
+<programlisting>
+ typedef uint16_t video_attributes_t;
+ /⋆ bits: descr. ⋆/
+ /⋆ 15-14 Video compression mode (0=MPEG-1, 1=MPEG-2) ⋆/
+ /⋆ 13-12 TV system (0=525/60, 1=625/50) ⋆/
+ /⋆ 11-10 Aspect ratio (0=4:3, 3=16:9) ⋆/
+ /⋆ 9- 8 permitted display mode on 4:3 monitor (0=both, 1=only pan-sca ⋆/
+ /⋆ 7 line 21-1 data present in GOP (1=yes, 0=no) ⋆/
+ /⋆ 6 line 21-2 data present in GOP (1=yes, 0=no) ⋆/
+ /⋆ 5- 3 source resolution (0=720x480/576, 1=704x480/576, 2=352x480/57 ⋆/
+ /⋆ 2 source letterboxed (1=yes, 0=no) ⋆/
+ /⋆ 0 film/camera mode (0=camera, 1=film (625/50 only)) ⋆/
+</programlisting>
+</section></section>
+
+
+<section id="video_function_calls">
+<title>Video Function Calls</title>
+
+
+<section id="video_fopen">
+<title>open()</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This system call opens a named video device (e.g. /dev/dvb/adapter0/video0)
+ for subsequent use.</para>
+<para>When an open() call has succeeded, the device will be ready for use.
+ The significance of blocking or non-blocking mode is described in the
+ documentation for functions where there is a difference. It does not affect the
+ semantics of the open() call itself. A device opened in blocking mode can later
+ be put into non-blocking mode (and vice versa) using the F_SETFL command
+ of the fcntl system call. This is a standard system call, documented in the Linux
+ manual page for fcntl. Only one user can open the Video Device in O_RDWR
+ mode. All other attempts to open the device in this mode will fail, and an
+ error-code will be returned. If the Video Device is opened in O_RDONLY
+ mode, the only ioctl call that can be used is VIDEO_GET_STATUS. All other
+ call will return an error code.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int open(const char ⋆deviceName, int flags);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>const char
+ *deviceName</para>
+</entry><entry
+ align="char">
+<para>Name of specific video device.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int flags</para>
+</entry><entry
+ align="char">
+<para>A bit-wise OR of the following flags:</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_RDONLY read-only access</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_RDWR read/write access</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>O_NONBLOCK open in non-blocking mode</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>(blocking mode is the default)</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>ENODEV</para>
+</entry><entry
+ align="char">
+<para>Device driver not loaded/available.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EINTERNAL</para>
+</entry><entry
+ align="char">
+<para>Internal error.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EBUSY</para>
+</entry><entry
+ align="char">
+<para>Device or resource busy.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>Invalid argument.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section>
+<section id="video_fclose">
+<title>close()</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This system call closes a previously opened video device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int close(int fd);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EBADF</para>
+</entry><entry
+ align="char">
+<para>fd is not a valid open file descriptor.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section>
+<section id="video_fwrite">
+<title>write()</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This system call can only be used if VIDEO_SOURCE_MEMORY is selected
+ in the ioctl call VIDEO_SELECT_SOURCE. The data provided shall be in
+ PES format, unless the capability allows other formats. If O_NONBLOCK is
+ not specified the function will block until buffer space is available. The amount
+ of data to be transferred is implied by count.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>size_t write(int fd, const void ⋆buf, size_t count);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>void *buf</para>
+</entry><entry
+ align="char">
+<para>Pointer to the buffer containing the PES data.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>size_t count</para>
+</entry><entry
+ align="char">
+<para>Size of buf.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>RETURN VALUE</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EPERM</para>
+</entry><entry
+ align="char">
+<para>Mode VIDEO_SOURCE_MEMORY not selected.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>ENOMEM</para>
+</entry><entry
+ align="char">
+<para>Attempted to write more data than the internal buffer can
+ hold.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EBADF</para>
+</entry><entry
+ align="char">
+<para>fd is not a valid open file descriptor.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="VIDEO_STOP"
+role="subsection"><title>VIDEO_STOP</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Video Device to stop playing the current stream.
+ Depending on the input parameter, the screen can be blanked out or displaying
+ the last decoded frame.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = VIDEO_STOP, boolean
+ mode);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_STOP for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>Boolean mode</para>
+</entry><entry
+ align="char">
+<para>Indicates how the screen shall be handled.</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>TRUE: Blank screen when stop.</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>FALSE: Show last decoded frame.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_PLAY"
+role="subsection"><title>VIDEO_PLAY</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Video Device to start playing a video stream from the
+ selected source.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = VIDEO_PLAY);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_PLAY for this command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_FREEZE"
+role="subsection"><title>VIDEO_FREEZE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call suspends the live video stream being played. Decoding
+ and playing are frozen. It is then possible to restart the decoding
+ and playing process of the video stream using the VIDEO_CONTINUE
+ command. If VIDEO_SOURCE_MEMORY is selected in the ioctl call
+ VIDEO_SELECT_SOURCE, the DVB subsystem will not decode any more
+ data until the ioctl call VIDEO_CONTINUE or VIDEO_PLAY is performed.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = VIDEO_FREEZE);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_FREEZE for this command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_CONTINUE"
+role="subsection"><title>VIDEO_CONTINUE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call restarts decoding and playing processes of the video stream
+ which was played before a call to VIDEO_FREEZE was made.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = VIDEO_CONTINUE);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_CONTINUE for this command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_SELECT_SOURCE"
+role="subsection"><title>VIDEO_SELECT_SOURCE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call informs the video device which source shall be used for the input
+ data. The possible sources are demux or memory. If memory is selected, the
+ data is fed to the video device through the write command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = VIDEO_SELECT_SOURCE,
+ video_stream_source_t source);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_SELECT_SOURCE for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>video_stream_source_t
+ source</para>
+</entry><entry
+ align="char">
+<para>Indicates which source shall be used for the Video stream.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_SET_BLANK"
+role="subsection"><title>VIDEO_SET_BLANK</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Video Device to blank out the picture.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = VIDEO_SET_BLANK, boolean
+ mode);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_SET_BLANK for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>boolean mode</para>
+</entry><entry
+ align="char">
+<para>TRUE: Blank screen when stop.</para>
+</entry>
+ </row><row><entry
+ align="char">
+</entry><entry
+ align="char">
+<para>FALSE: Show last decoded frame.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_GET_STATUS"
+role="subsection"><title>VIDEO_GET_STATUS</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Video Device to return the current status of the device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para> int ioctl(fd, int request = VIDEO_GET_STATUS, struct
+ video_status ⋆status);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_GET_STATUS for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct video_status
+ *status</para>
+</entry><entry
+ align="char">
+<para>Returns the current status of the Video Device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_GET_EVENT"
+role="subsection"><title>VIDEO_GET_EVENT</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call returns an event of type video_event if available. If an event is
+ not available, the behavior depends on whether the device is in blocking or
+ non-blocking mode. In the latter case, the call fails immediately with errno
+ set to EWOULDBLOCK. In the former case, the call blocks until an event
+ becomes available. The standard Linux poll() and/or select() system calls can
+ be used with the device file descriptor to watch for new events. For select(),
+ the file descriptor should be included in the exceptfds argument, and for
+ poll(), POLLPRI should be specified as the wake-up condition. Read-only
+ permissions are sufficient for this ioctl call.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para> int ioctl(fd, int request = VIDEO_GET_EVENT, struct
+ video_event ⋆ev);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_GET_EVENT for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct video_event
+ *ev</para>
+</entry><entry
+ align="char">
+<para>Points to the location where the event, if any, is to be
+ stored.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EWOULDBLOCK</para>
+</entry><entry
+ align="char">
+<para>There is no event pending, and the device is in
+ non-blocking mode.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>EOVERFLOW</para>
+</entry><entry
+ align="char">
+<para>Overflow in event queue - one or more events were lost.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="VIDEO_SET_DISPLAY_FORMAT"
+role="subsection"><title>VIDEO_SET_DISPLAY_FORMAT</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Video Device to select the video format to be applied
+ by the MPEG chip on the video.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para> int ioctl(fd, int request =
+ VIDEO_SET_DISPLAY_FORMAT, video_display_format_t
+ format);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_SET_DISPLAY_FORMAT for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>video_display_format_t
+ format</para>
+</entry><entry
+ align="char">
+<para>Selects the video format to be used.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_STILLPICTURE"
+role="subsection"><title>VIDEO_STILLPICTURE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Video Device to display a still picture (I-frame). The
+ input data shall contain an I-frame. If the pointer is NULL, then the current
+ displayed still picture is blanked.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = VIDEO_STILLPICTURE,
+ struct video_still_picture ⋆sp);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_STILLPICTURE for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct
+ video_still_picture
+ *sp</para>
+</entry><entry
+ align="char">
+<para>Pointer to a location where an I-frame and size is stored.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_FAST_FORWARD"
+role="subsection"><title>VIDEO_FAST_FORWARD</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Video Device to skip decoding of N number of I-frames.
+ This call can only be used if VIDEO_SOURCE_MEMORY is selected.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = VIDEO_FAST_FORWARD, int
+ nFrames);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_FAST_FORWARD for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int nFrames</para>
+</entry><entry
+ align="char">
+<para>The number of frames to skip.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EPERM</para>
+</entry><entry
+ align="char">
+<para>Mode VIDEO_SOURCE_MEMORY not selected.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="VIDEO_SLOWMOTION"
+role="subsection"><title>VIDEO_SLOWMOTION</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the video device to repeat decoding frames N number of
+ times. This call can only be used if VIDEO_SOURCE_MEMORY is selected.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = VIDEO_SLOWMOTION, int
+ nFrames);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_SLOWMOTION for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int nFrames</para>
+</entry><entry
+ align="char">
+<para>The number of times to repeat each frame.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EPERM</para>
+</entry><entry
+ align="char">
+<para>Mode VIDEO_SOURCE_MEMORY not selected.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="VIDEO_GET_CAPABILITIES"
+role="subsection"><title>VIDEO_GET_CAPABILITIES</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the video device about its decoding capabilities. On success
+ it returns and integer which has bits set according to the defines in section ??.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = VIDEO_GET_CAPABILITIES,
+ unsigned int ⋆cap);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_GET_CAPABILITIES for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>unsigned int *cap</para>
+</entry><entry
+ align="char">
+<para>Pointer to a location where to store the capability
+ information.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_SET_ID"
+role="subsection"><title>VIDEO_SET_ID</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl selects which sub-stream is to be decoded if a program or system
+ stream is sent to the video device.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request = VIDEO_SET_ID, int
+ id);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_SET_ID for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int id</para>
+</entry><entry
+ align="char">
+<para>video sub-stream id</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>Invalid sub-stream id.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="VIDEO_CLEAR_BUFFER"
+role="subsection"><title>VIDEO_CLEAR_BUFFER</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call clears all video buffers in the driver and in the decoder hardware.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = VIDEO_CLEAR_BUFFER);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_CLEAR_BUFFER for this command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_SET_STREAMTYPE"
+role="subsection"><title>VIDEO_SET_STREAMTYPE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl tells the driver which kind of stream to expect being written to it. If
+ this call is not used the default of video PES is used. Some drivers might not
+ support this call and always expect PES.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = VIDEO_SET_STREAMTYPE,
+ int type);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_SET_STREAMTYPE for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int type</para>
+</entry><entry
+ align="char">
+<para>stream type</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_SET_FORMAT"
+role="subsection"><title>VIDEO_SET_FORMAT</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl sets the screen format (aspect ratio) of the connected output device
+ (TV) so that the output of the decoder can be adjusted accordingly.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para> int ioctl(fd, int request = VIDEO_SET_FORMAT,
+ video_format_t format);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_SET_FORMAT for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>video_format_t
+ format</para>
+</entry><entry
+ align="char">
+<para>video format of TV as defined in section ??.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>format is not a valid video format.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="VIDEO_SET_SYSTEM"
+role="subsection"><title>VIDEO_SET_SYSTEM</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl sets the television output format. The format (see section ??) may
+ vary from the color format of the displayed MPEG stream. If the hardware is
+ not able to display the requested format the call will return an error.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para> int ioctl(fd, int request = VIDEO_SET_SYSTEM ,
+ video_system_t system);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_SET_FORMAT for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>video_system_t
+ system</para>
+</entry><entry
+ align="char">
+<para>video system of TV output.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>system is not a valid or supported video system.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="VIDEO_SET_HIGHLIGHT"
+role="subsection"><title>VIDEO_SET_HIGHLIGHT</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl sets the SPU highlight information for the menu access of a DVD.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para> int ioctl(fd, int request = VIDEO_SET_HIGHLIGHT
+ ,video_highlight_t ⋆vhilite)</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_SET_HIGHLIGHT for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>video_highlight_t
+ *vhilite</para>
+</entry><entry
+ align="char">
+<para>SPU Highlight information according to section ??.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_SET_SPU"
+role="subsection"><title>VIDEO_SET_SPU</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl activates or deactivates SPU decoding in a DVD input stream. It can
+ only be used, if the driver is able to handle a DVD stream.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para> int ioctl(fd, int request = VIDEO_SET_SPU ,
+ video_spu_t ⋆spu)</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_SET_SPU for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>video_spu_t *spu</para>
+</entry><entry
+ align="char">
+<para>SPU decoding (de)activation and subid setting according
+ to section ??.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>input is not a valid spu setting or driver cannot handle
+ SPU.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="VIDEO_SET_SPU_PALETTE"
+role="subsection"><title>VIDEO_SET_SPU_PALETTE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl sets the SPU color palette.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para> int ioctl(fd, int request = VIDEO_SET_SPU_PALETTE
+ ,video_spu_palette_t ⋆palette )</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_SET_SPU_PALETTE for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>video_spu_palette_t
+ *palette</para>
+</entry><entry
+ align="char">
+<para>SPU palette according to section ??.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>input is not a valid palette or driver doesn’t handle SPU.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="VIDEO_GET_NAVI"
+role="subsection"><title>VIDEO_GET_NAVI</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl returns navigational information from the DVD stream. This is
+ especially needed if an encoded stream has to be decoded by the hardware.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para> int ioctl(fd, int request = VIDEO_GET_NAVI ,
+ video_navi_pack_t ⋆navipack)</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_GET_NAVI for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>video_navi_pack_t
+ *navipack</para>
+</entry><entry
+ align="char">
+<para>PCI or DSI pack (private stream 2) according to section
+ ??.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EFAULT</para>
+</entry><entry
+ align="char">
+<para>driver is not able to return navigational information</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+
+</section><section id="VIDEO_SET_ATTRIBUTES"
+role="subsection"><title>VIDEO_SET_ATTRIBUTES</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is intended for DVD playback and allows you to set certain
+ information about the stream. Some hardware may not need this information,
+ but the call also tells the hardware to prepare for DVD playback.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para> int ioctl(fd, int request = VIDEO_SET_ATTRIBUTE
+ ,video_attributes_t vattr)</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_SET_ATTRIBUTE for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>video_attributes_t
+ vattr</para>
+</entry><entry
+ align="char">
+<para>video attributes according to section ??.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>EINVAL</para>
+</entry><entry
+ align="char">
+<para>input is not a valid attribute setting.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+ </section></section>
diff --git a/Documentation/DocBook/media/dvbstb.png.b64 b/Documentation/DocBook/media/dvbstb.png.b64
new file mode 100644
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+++ b/Documentation/DocBook/media/dvbstb.png.b64
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+ <title>Common API Elements</title>
+
+ <para>Programming a V4L2 device consists of these
+steps:</para>
+
+ <itemizedlist>
+ <listitem>
+ <para>Opening the device</para>
+ </listitem>
+ <listitem>
+ <para>Changing device properties, selecting a video and audio
+input, video standard, picture brightness a. o.</para>
+ </listitem>
+ <listitem>
+ <para>Negotiating a data format</para>
+ </listitem>
+ <listitem>
+ <para>Negotiating an input/output method</para>
+ </listitem>
+ <listitem>
+ <para>The actual input/output loop</para>
+ </listitem>
+ <listitem>
+ <para>Closing the device</para>
+ </listitem>
+ </itemizedlist>
+
+ <para>In practice most steps are optional and can be executed out of
+order. It depends on the V4L2 device type, you can read about the
+details in <xref linkend="devices" />. In this chapter we will discuss
+the basic concepts applicable to all devices.</para>
+
+ <section id="open">
+ <title>Opening and Closing Devices</title>
+
+ <section>
+ <title>Device Naming</title>
+
+ <para>V4L2 drivers are implemented as kernel modules, loaded
+manually by the system administrator or automatically when a device is
+first opened. The driver modules plug into the "videodev" kernel
+module. It provides helper functions and a common application
+interface specified in this document.</para>
+
+ <para>Each driver thus loaded registers one or more device nodes
+with major number 81 and a minor number between 0 and 255. Assigning
+minor numbers to V4L2 devices is entirely up to the system administrator,
+this is primarily intended to solve conflicts between devices.<footnote>
+ <para>Access permissions are associated with character
+device special files, hence we must ensure device numbers cannot
+change with the module load order. To this end minor numbers are no
+longer automatically assigned by the "videodev" module as in V4L but
+requested by the driver. The defaults will suffice for most people
+unless two drivers compete for the same minor numbers.</para>
+ </footnote> The module options to select minor numbers are named
+after the device special file with a "_nr" suffix. For example "video_nr"
+for <filename>/dev/video</filename> video capture devices. The number is
+an offset to the base minor number associated with the device type.
+<footnote>
+ <para>In earlier versions of the V4L2 API the module options
+where named after the device special file with a "unit_" prefix, expressing
+the minor number itself, not an offset. Rationale for this change is unknown.
+Lastly the naming and semantics are just a convention among driver writers,
+the point to note is that minor numbers are not supposed to be hardcoded
+into drivers.</para>
+ </footnote> When the driver supports multiple devices of the same
+type more than one minor number can be assigned, separated by commas:
+<informalexample>
+ <screen>
+> insmod mydriver.o video_nr=0,1 radio_nr=0,1</screen>
+ </informalexample></para>
+
+ <para>In <filename>/etc/modules.conf</filename> this may be
+written as: <informalexample>
+ <screen>
+alias char-major-81-0 mydriver
+alias char-major-81-1 mydriver
+alias char-major-81-64 mydriver <co id="alias" />
+options mydriver video_nr=0,1 radio_nr=0,1 <co id="options" />
+ </screen>
+ <calloutlist>
+ <callout arearefs="alias">
+ <para>When an application attempts to open a device
+special file with major number 81 and minor number 0, 1, or 64, load
+"mydriver" (and the "videodev" module it depends upon).</para>
+ </callout>
+ <callout arearefs="options">
+ <para>Register the first two video capture devices with
+minor number 0 and 1 (base number is 0), the first two radio device
+with minor number 64 and 65 (base 64).</para>
+ </callout>
+ </calloutlist>
+ </informalexample> When no minor number is given as module
+option the driver supplies a default. <xref linkend="devices" />
+recommends the base minor numbers to be used for the various device
+types. Obviously minor numbers must be unique. When the number is
+already in use the <emphasis>offending device</emphasis> will not be
+registered. <!-- Blessed by Linus Torvalds on
+linux-kernel@vger.kernel.org, 2002-11-20. --></para>
+
+ <para>By convention system administrators create various
+character device special files with these major and minor numbers in
+the <filename>/dev</filename> directory. The names recommended for the
+different V4L2 device types are listed in <xref linkend="devices" />.
+</para>
+
+ <para>The creation of character special files (with
+<application>mknod</application>) is a privileged operation and
+devices cannot be opened by major and minor number. That means
+applications cannot <emphasis>reliable</emphasis> scan for loaded or
+installed drivers. The user must enter a device name, or the
+application can try the conventional device names.</para>
+
+ <para>Under the device filesystem (devfs) the minor number
+options are ignored. V4L2 drivers (or by proxy the "videodev" module)
+automatically create the required device files in the
+<filename>/dev/v4l</filename> directory using the conventional device
+names above.</para>
+ </section>
+
+ <section id="related">
+ <title>Related Devices</title>
+
+ <para>Devices can support several related functions. For example
+video capturing, video overlay and VBI capturing are related because
+these functions share, amongst other, the same video input and tuner
+frequency. V4L and earlier versions of V4L2 used the same device name
+and minor number for video capturing and overlay, but different ones
+for VBI. Experience showed this approach has several problems<footnote>
+ <para>Given a device file name one cannot reliable find
+related devices. For once names are arbitrary and in a system with
+multiple devices, where only some support VBI capturing, a
+<filename>/dev/video2</filename> is not necessarily related to
+<filename>/dev/vbi2</filename>. The V4L
+<constant>VIDIOCGUNIT</constant> ioctl would require a search for a
+device file with a particular major and minor number.</para>
+ </footnote>, and to make things worse the V4L videodev module
+used to prohibit multiple opens of a device.</para>
+
+ <para>As a remedy the present version of the V4L2 API relaxed the
+concept of device types with specific names and minor numbers. For
+compatibility with old applications drivers must still register different
+minor numbers to assign a default function to the device. But if related
+functions are supported by the driver they must be available under all
+registered minor numbers. The desired function can be selected after
+opening the device as described in <xref linkend="devices" />.</para>
+
+ <para>Imagine a driver supporting video capturing, video
+overlay, raw VBI capturing, and FM radio reception. It registers three
+devices with minor number 0, 64 and 224 (this numbering scheme is
+inherited from the V4L API). Regardless if
+<filename>/dev/video</filename> (81, 0) or
+<filename>/dev/vbi</filename> (81, 224) is opened the application can
+select any one of the video capturing, overlay or VBI capturing
+functions. Without programming (e. g. reading from the device
+with <application>dd</application> or <application>cat</application>)
+<filename>/dev/video</filename> captures video images, while
+<filename>/dev/vbi</filename> captures raw VBI data.
+<filename>/dev/radio</filename> (81, 64) is invariable a radio device,
+unrelated to the video functions. Being unrelated does not imply the
+devices can be used at the same time, however. The &func-open;
+function may very well return an &EBUSY;.</para>
+
+ <para>Besides video input or output the hardware may also
+support audio sampling or playback. If so, these functions are
+implemented as OSS or ALSA PCM devices and eventually OSS or ALSA
+audio mixer. The V4L2 API makes no provisions yet to find these
+related devices. If you have an idea please write to the linux-media
+mailing list: &v4l-ml;.</para>
+ </section>
+
+ <section>
+ <title>Multiple Opens</title>
+
+ <para>In general, V4L2 devices can be opened more than once.
+When this is supported by the driver, users can for example start a
+"panel" application to change controls like brightness or audio
+volume, while another application captures video and audio. In other words, panel
+applications are comparable to an OSS or ALSA audio mixer application.
+When a device supports multiple functions like capturing and overlay
+<emphasis>simultaneously</emphasis>, multiple opens allow concurrent
+use of the device by forked processes or specialized applications.</para>
+
+ <para>Multiple opens are optional, although drivers should
+permit at least concurrent accesses without data exchange, &ie; panel
+applications. This implies &func-open; can return an &EBUSY; when the
+device is already in use, as well as &func-ioctl; functions initiating
+data exchange (namely the &VIDIOC-S-FMT; ioctl), and the &func-read;
+and &func-write; functions.</para>
+
+ <para>Mere opening a V4L2 device does not grant exclusive
+access.<footnote>
+ <para>Drivers could recognize the
+<constant>O_EXCL</constant> open flag. Presently this is not required,
+so applications cannot know if it really works.</para>
+ </footnote> Initiating data exchange however assigns the right
+to read or write the requested type of data, and to change related
+properties, to this file descriptor. Applications can request
+additional access privileges using the priority mechanism described in
+<xref linkend="app-pri" />.</para>
+ </section>
+
+ <section>
+ <title>Shared Data Streams</title>
+
+ <para>V4L2 drivers should not support multiple applications
+reading or writing the same data stream on a device by copying
+buffers, time multiplexing or similar means. This is better handled by
+a proxy application in user space. When the driver supports stream
+sharing anyway it must be implemented transparently. The V4L2 API does
+not specify how conflicts are solved. <!-- For example O_EXCL when the
+application does not want to be preempted, PROT_READ mmapped buffers
+which can be mapped twice, what happens when image formats do not
+match etc.--></para>
+ </section>
+
+ <section>
+ <title>Functions</title>
+
+ <para>To open and close V4L2 devices applications use the
+&func-open; and &func-close; function, respectively. Devices are
+programmed using the &func-ioctl; function as explained in the
+following sections.</para>
+ </section>
+ </section>
+
+ <section id="querycap">
+ <title>Querying Capabilities</title>
+
+ <para>Because V4L2 covers a wide variety of devices not all
+aspects of the API are equally applicable to all types of devices.
+Furthermore devices of the same type have different capabilities and
+this specification permits the omission of a few complicated and less
+important parts of the API.</para>
+
+ <para>The &VIDIOC-QUERYCAP; ioctl is available to check if the kernel
+device is compatible with this specification, and to query the <link
+linkend="devices">functions</link> and <link linkend="io">I/O
+methods</link> supported by the device.</para>
+
+ <para>Starting with kernel version 3.1, VIDIOC-QUERYCAP will return the
+V4L2 API version used by the driver, with generally matches the Kernel version.
+There's no need of using &VIDIOC-QUERYCAP; to check if an specific ioctl is
+supported, the V4L2 core now returns ENOIOCTLCMD if a driver doesn't provide
+support for an ioctl.</para>
+
+ <para>Other features can be queried
+by calling the respective ioctl, for example &VIDIOC-ENUMINPUT;
+to learn about the number, types and names of video connectors on the
+device. Although abstraction is a major objective of this API, the
+ioctl also allows driver specific applications to reliable identify
+the driver.</para>
+
+ <para>All V4L2 drivers must support
+<constant>VIDIOC_QUERYCAP</constant>. Applications should always call
+this ioctl after opening the device.</para>
+ </section>
+
+ <section id="app-pri">
+ <title>Application Priority</title>
+
+ <para>When multiple applications share a device it may be
+desirable to assign them different priorities. Contrary to the
+traditional "rm -rf /" school of thought a video recording application
+could for example block other applications from changing video
+controls or switching the current TV channel. Another objective is to
+permit low priority applications working in background, which can be
+preempted by user controlled applications and automatically regain
+control of the device at a later time.</para>
+
+ <para>Since these features cannot be implemented entirely in user
+space V4L2 defines the &VIDIOC-G-PRIORITY; and &VIDIOC-S-PRIORITY;
+ioctls to request and query the access priority associate with a file
+descriptor. Opening a device assigns a medium priority, compatible
+with earlier versions of V4L2 and drivers not supporting these ioctls.
+Applications requiring a different priority will usually call
+<constant>VIDIOC_S_PRIORITY</constant> after verifying the device with
+the &VIDIOC-QUERYCAP; ioctl.</para>
+
+ <para>Ioctls changing driver properties, such as &VIDIOC-S-INPUT;,
+return an &EBUSY; after another application obtained higher priority.
+An event mechanism to notify applications about asynchronous property
+changes has been proposed but not added yet.</para>
+ </section>
+
+ <section id="video">
+ <title>Video Inputs and Outputs</title>
+
+ <para>Video inputs and outputs are physical connectors of a
+device. These can be for example RF connectors (antenna/cable), CVBS
+a.k.a. Composite Video, S-Video or RGB connectors. Only video and VBI
+capture devices have inputs, output devices have outputs, at least one
+each. Radio devices have no video inputs or outputs.</para>
+
+ <para>To learn about the number and attributes of the
+available inputs and outputs applications can enumerate them with the
+&VIDIOC-ENUMINPUT; and &VIDIOC-ENUMOUTPUT; ioctl, respectively. The
+&v4l2-input; returned by the <constant>VIDIOC_ENUMINPUT</constant>
+ioctl also contains signal status information applicable when the
+current video input is queried.</para>
+
+ <para>The &VIDIOC-G-INPUT; and &VIDIOC-G-OUTPUT; ioctl return the
+index of the current video input or output. To select a different
+input or output applications call the &VIDIOC-S-INPUT; and
+&VIDIOC-S-OUTPUT; ioctl. Drivers must implement all the input ioctls
+when the device has one or more inputs, all the output ioctls when the
+device has one or more outputs.</para>
+
+ <!--
+ <figure id=io-tree>
+ <title>Input and output enumeration is the root of most device properties.</title>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="links.pdf" format="ps" />
+ </imageobject>
+ <imageobject>
+ <imagedata fileref="links.gif" format="gif" />
+ </imageobject>
+ <textobject>
+ <phrase>Links between various device property structures.</phrase>
+ </textobject>
+ </mediaobject>
+ </figure>
+ -->
+
+ <example>
+ <title>Information about the current video input</title>
+
+ <programlisting>
+&v4l2-input; input;
+int index;
+
+if (-1 == ioctl (fd, &VIDIOC-G-INPUT;, &index)) {
+ perror ("VIDIOC_G_INPUT");
+ exit (EXIT_FAILURE);
+}
+
+memset (&input, 0, sizeof (input));
+input.index = index;
+
+if (-1 == ioctl (fd, &VIDIOC-ENUMINPUT;, &input)) {
+ perror ("VIDIOC_ENUMINPUT");
+ exit (EXIT_FAILURE);
+}
+
+printf ("Current input: %s\n", input.name);
+ </programlisting>
+ </example>
+
+ <example>
+ <title>Switching to the first video input</title>
+
+ <programlisting>
+int index;
+
+index = 0;
+
+if (-1 == ioctl (fd, &VIDIOC-S-INPUT;, &index)) {
+ perror ("VIDIOC_S_INPUT");
+ exit (EXIT_FAILURE);
+}
+ </programlisting>
+ </example>
+ </section>
+
+ <section id="audio">
+ <title>Audio Inputs and Outputs</title>
+
+ <para>Audio inputs and outputs are physical connectors of a
+device. Video capture devices have inputs, output devices have
+outputs, zero or more each. Radio devices have no audio inputs or
+outputs. They have exactly one tuner which in fact
+<emphasis>is</emphasis> an audio source, but this API associates
+tuners with video inputs or outputs only, and radio devices have
+none of these.<footnote>
+ <para>Actually &v4l2-audio; ought to have a
+<structfield>tuner</structfield> field like &v4l2-input;, not only
+making the API more consistent but also permitting radio devices with
+multiple tuners.</para>
+ </footnote> A connector on a TV card to loop back the received
+audio signal to a sound card is not considered an audio output.</para>
+
+ <para>Audio and video inputs and outputs are associated. Selecting
+a video source also selects an audio source. This is most evident when
+the video and audio source is a tuner. Further audio connectors can
+combine with more than one video input or output. Assumed two
+composite video inputs and two audio inputs exist, there may be up to
+four valid combinations. The relation of video and audio connectors
+is defined in the <structfield>audioset</structfield> field of the
+respective &v4l2-input; or &v4l2-output;, where each bit represents
+the index number, starting at zero, of one audio input or output.</para>
+
+ <para>To learn about the number and attributes of the
+available inputs and outputs applications can enumerate them with the
+&VIDIOC-ENUMAUDIO; and &VIDIOC-ENUMAUDOUT; ioctl, respectively. The
+&v4l2-audio; returned by the <constant>VIDIOC_ENUMAUDIO</constant> ioctl
+also contains signal status information applicable when the current
+audio input is queried.</para>
+
+ <para>The &VIDIOC-G-AUDIO; and &VIDIOC-G-AUDOUT; ioctl report
+the current audio input and output, respectively. Note that, unlike
+&VIDIOC-G-INPUT; and &VIDIOC-G-OUTPUT; these ioctls return a structure
+as <constant>VIDIOC_ENUMAUDIO</constant> and
+<constant>VIDIOC_ENUMAUDOUT</constant> do, not just an index.</para>
+
+ <para>To select an audio input and change its properties
+applications call the &VIDIOC-S-AUDIO; ioctl. To select an audio
+output (which presently has no changeable properties) applications
+call the &VIDIOC-S-AUDOUT; ioctl.</para>
+
+ <para>Drivers must implement all input ioctls when the device
+has one or more inputs, all output ioctls when the device has one
+or more outputs. When the device has any audio inputs or outputs the
+driver must set the <constant>V4L2_CAP_AUDIO</constant> flag in the
+&v4l2-capability; returned by the &VIDIOC-QUERYCAP; ioctl.</para>
+
+ <example>
+ <title>Information about the current audio input</title>
+
+ <programlisting>
+&v4l2-audio; audio;
+
+memset (&audio, 0, sizeof (audio));
+
+if (-1 == ioctl (fd, &VIDIOC-G-AUDIO;, &audio)) {
+ perror ("VIDIOC_G_AUDIO");
+ exit (EXIT_FAILURE);
+}
+
+printf ("Current input: %s\n", audio.name);
+ </programlisting>
+ </example>
+
+ <example>
+ <title>Switching to the first audio input</title>
+
+ <programlisting>
+&v4l2-audio; audio;
+
+memset (&audio, 0, sizeof (audio)); /* clear audio.mode, audio.reserved */
+
+audio.index = 0;
+
+if (-1 == ioctl (fd, &VIDIOC-S-AUDIO;, &audio)) {
+ perror ("VIDIOC_S_AUDIO");
+ exit (EXIT_FAILURE);
+}
+ </programlisting>
+ </example>
+ </section>
+
+ <section id="tuner">
+ <title>Tuners and Modulators</title>
+
+ <section>
+ <title>Tuners</title>
+
+ <para>Video input devices can have one or more tuners
+demodulating a RF signal. Each tuner is associated with one or more
+video inputs, depending on the number of RF connectors on the tuner.
+The <structfield>type</structfield> field of the respective
+&v4l2-input; returned by the &VIDIOC-ENUMINPUT; ioctl is set to
+<constant>V4L2_INPUT_TYPE_TUNER</constant> and its
+<structfield>tuner</structfield> field contains the index number of
+the tuner.</para>
+
+ <para>Radio devices have exactly one tuner with index zero, no
+video inputs.</para>
+
+ <para>To query and change tuner properties applications use the
+&VIDIOC-G-TUNER; and &VIDIOC-S-TUNER; ioctl, respectively. The
+&v4l2-tuner; returned by <constant>VIDIOC_G_TUNER</constant> also
+contains signal status information applicable when the tuner of the
+current video input, or a radio tuner is queried. Note that
+<constant>VIDIOC_S_TUNER</constant> does not switch the current tuner,
+when there is more than one at all. The tuner is solely determined by
+the current video input. Drivers must support both ioctls and set the
+<constant>V4L2_CAP_TUNER</constant> flag in the &v4l2-capability;
+returned by the &VIDIOC-QUERYCAP; ioctl when the device has one or
+more tuners.</para>
+ </section>
+
+ <section>
+ <title>Modulators</title>
+
+ <para>Video output devices can have one or more modulators, uh,
+modulating a video signal for radiation or connection to the antenna
+input of a TV set or video recorder. Each modulator is associated with
+one or more video outputs, depending on the number of RF connectors on
+the modulator. The <structfield>type</structfield> field of the
+respective &v4l2-output; returned by the &VIDIOC-ENUMOUTPUT; ioctl is
+set to <constant>V4L2_OUTPUT_TYPE_MODULATOR</constant> and its
+<structfield>modulator</structfield> field contains the index number
+of the modulator. This specification does not define radio output
+devices.</para>
+
+ <para>To query and change modulator properties applications use
+the &VIDIOC-G-MODULATOR; and &VIDIOC-S-MODULATOR; ioctl. Note that
+<constant>VIDIOC_S_MODULATOR</constant> does not switch the current
+modulator, when there is more than one at all. The modulator is solely
+determined by the current video output. Drivers must support both
+ioctls and set the <constant>V4L2_CAP_MODULATOR</constant> flag in
+the &v4l2-capability; returned by the &VIDIOC-QUERYCAP; ioctl when the
+device has one or more modulators.</para>
+ </section>
+
+ <section>
+ <title>Radio Frequency</title>
+
+ <para>To get and set the tuner or modulator radio frequency
+applications use the &VIDIOC-G-FREQUENCY; and &VIDIOC-S-FREQUENCY;
+ioctl which both take a pointer to a &v4l2-frequency;. These ioctls
+are used for TV and radio devices alike. Drivers must support both
+ioctls when the tuner or modulator ioctls are supported, or
+when the device is a radio device.</para>
+ </section>
+ </section>
+
+ <section id="standard">
+ <title>Video Standards</title>
+
+ <para>Video devices typically support one or more different video
+standards or variations of standards. Each video input and output may
+support another set of standards. This set is reported by the
+<structfield>std</structfield> field of &v4l2-input; and
+&v4l2-output; returned by the &VIDIOC-ENUMINPUT; and
+&VIDIOC-ENUMOUTPUT; ioctl, respectively.</para>
+
+ <para>V4L2 defines one bit for each analog video standard
+currently in use worldwide, and sets aside bits for driver defined
+standards, ⪚ hybrid standards to watch NTSC video tapes on PAL TVs
+and vice versa. Applications can use the predefined bits to select a
+particular standard, although presenting the user a menu of supported
+standards is preferred. To enumerate and query the attributes of the
+supported standards applications use the &VIDIOC-ENUMSTD; ioctl.</para>
+
+ <para>Many of the defined standards are actually just variations
+of a few major standards. The hardware may in fact not distinguish
+between them, or do so internal and switch automatically. Therefore
+enumerated standards also contain sets of one or more standard
+bits.</para>
+
+ <para>Assume a hypothetic tuner capable of demodulating B/PAL,
+G/PAL and I/PAL signals. The first enumerated standard is a set of B
+and G/PAL, switched automatically depending on the selected radio
+frequency in UHF or VHF band. Enumeration gives a "PAL-B/G" or "PAL-I"
+choice. Similar a Composite input may collapse standards, enumerating
+"PAL-B/G/H/I", "NTSC-M" and "SECAM-D/K".<footnote>
+ <para>Some users are already confused by technical terms PAL,
+NTSC and SECAM. There is no point asking them to distinguish between
+B, G, D, or K when the software or hardware can do that
+automatically.</para>
+ </footnote></para>
+
+ <para>To query and select the standard used by the current video
+input or output applications call the &VIDIOC-G-STD; and
+&VIDIOC-S-STD; ioctl, respectively. The <emphasis>received</emphasis>
+standard can be sensed with the &VIDIOC-QUERYSTD; ioctl. Note parameter of all these ioctls is a pointer to a &v4l2-std-id; type (a standard set), <emphasis>not</emphasis> an index into the standard enumeration.<footnote>
+ <para>An alternative to the current scheme is to use pointers
+to indices as arguments of <constant>VIDIOC_G_STD</constant> and
+<constant>VIDIOC_S_STD</constant>, the &v4l2-input; and
+&v4l2-output; <structfield>std</structfield> field would be a set of
+indices like <structfield>audioset</structfield>.</para>
+ <para>Indices are consistent with the rest of the API
+and identify the standard unambiguously. In the present scheme of
+things an enumerated standard is looked up by &v4l2-std-id;. Now the
+standards supported by the inputs of a device can overlap. Just
+assume the tuner and composite input in the example above both
+exist on a device. An enumeration of "PAL-B/G", "PAL-H/I" suggests
+a choice which does not exist. We cannot merge or omit sets, because
+applications would be unable to find the standards reported by
+<constant>VIDIOC_G_STD</constant>. That leaves separate enumerations
+for each input. Also selecting a standard by &v4l2-std-id; can be
+ambiguous. Advantage of this method is that applications need not
+identify the standard indirectly, after enumerating.</para><para>So in
+summary, the lookup itself is unavoidable. The difference is only
+whether the lookup is necessary to find an enumerated standard or to
+switch to a standard by &v4l2-std-id;.</para>
+ </footnote> Drivers must implement all video standard ioctls
+when the device has one or more video inputs or outputs.</para>
+
+ <para>Special rules apply to USB cameras where the notion of video
+standards makes little sense. More generally any capture device,
+output devices accordingly, which is <itemizedlist>
+ <listitem>
+ <para>incapable of capturing fields or frames at the nominal
+rate of the video standard, or</para>
+ </listitem>
+ <listitem>
+ <para>where <link linkend="buffer">timestamps</link> refer
+to the instant the field or frame was received by the driver, not the
+capture time, or</para>
+ </listitem>
+ <listitem>
+ <para>where <link linkend="buffer">sequence numbers</link>
+refer to the frames received by the driver, not the captured
+frames.</para>
+ </listitem>
+ </itemizedlist> Here the driver shall set the
+<structfield>std</structfield> field of &v4l2-input; and &v4l2-output;
+to zero, the <constant>VIDIOC_G_STD</constant>,
+<constant>VIDIOC_S_STD</constant>,
+<constant>VIDIOC_QUERYSTD</constant> and
+<constant>VIDIOC_ENUMSTD</constant> ioctls shall return the
+&EINVAL;.<footnote>
+ <para>See <xref linkend="buffer" /> for a rationale. Probably
+even USB cameras follow some well known video standard. It might have
+been better to explicitly indicate elsewhere if a device cannot live
+up to normal expectations, instead of this exception.</para>
+ </footnote></para>
+
+ <example>
+ <title>Information about the current video standard</title>
+
+ <programlisting>
+&v4l2-std-id; std_id;
+&v4l2-standard; standard;
+
+if (-1 == ioctl (fd, &VIDIOC-G-STD;, &std_id)) {
+ /* Note when VIDIOC_ENUMSTD always returns EINVAL this
+ is no video device or it falls under the USB exception,
+ and VIDIOC_G_STD returning EINVAL is no error. */
+
+ perror ("VIDIOC_G_STD");
+ exit (EXIT_FAILURE);
+}
+
+memset (&standard, 0, sizeof (standard));
+standard.index = 0;
+
+while (0 == ioctl (fd, &VIDIOC-ENUMSTD;, &standard)) {
+ if (standard.id & std_id) {
+ printf ("Current video standard: %s\n", standard.name);
+ exit (EXIT_SUCCESS);
+ }
+
+ standard.index++;
+}
+
+/* EINVAL indicates the end of the enumeration, which cannot be
+ empty unless this device falls under the USB exception. */
+
+if (errno == EINVAL || standard.index == 0) {
+ perror ("VIDIOC_ENUMSTD");
+ exit (EXIT_FAILURE);
+}
+ </programlisting>
+ </example>
+
+ <example>
+ <title>Listing the video standards supported by the current
+input</title>
+
+ <programlisting>
+&v4l2-input; input;
+&v4l2-standard; standard;
+
+memset (&input, 0, sizeof (input));
+
+if (-1 == ioctl (fd, &VIDIOC-G-INPUT;, &input.index)) {
+ perror ("VIDIOC_G_INPUT");
+ exit (EXIT_FAILURE);
+}
+
+if (-1 == ioctl (fd, &VIDIOC-ENUMINPUT;, &input)) {
+ perror ("VIDIOC_ENUM_INPUT");
+ exit (EXIT_FAILURE);
+}
+
+printf ("Current input %s supports:\n", input.name);
+
+memset (&standard, 0, sizeof (standard));
+standard.index = 0;
+
+while (0 == ioctl (fd, &VIDIOC-ENUMSTD;, &standard)) {
+ if (standard.id & input.std)
+ printf ("%s\n", standard.name);
+
+ standard.index++;
+}
+
+/* EINVAL indicates the end of the enumeration, which cannot be
+ empty unless this device falls under the USB exception. */
+
+if (errno != EINVAL || standard.index == 0) {
+ perror ("VIDIOC_ENUMSTD");
+ exit (EXIT_FAILURE);
+}
+ </programlisting>
+ </example>
+
+ <example>
+ <title>Selecting a new video standard</title>
+
+ <programlisting>
+&v4l2-input; input;
+&v4l2-std-id; std_id;
+
+memset (&input, 0, sizeof (input));
+
+if (-1 == ioctl (fd, &VIDIOC-G-INPUT;, &input.index)) {
+ perror ("VIDIOC_G_INPUT");
+ exit (EXIT_FAILURE);
+}
+
+if (-1 == ioctl (fd, &VIDIOC-ENUMINPUT;, &input)) {
+ perror ("VIDIOC_ENUM_INPUT");
+ exit (EXIT_FAILURE);
+}
+
+if (0 == (input.std & V4L2_STD_PAL_BG)) {
+ fprintf (stderr, "Oops. B/G PAL is not supported.\n");
+ exit (EXIT_FAILURE);
+}
+
+/* Note this is also supposed to work when only B
+ <emphasis>or</emphasis> G/PAL is supported. */
+
+std_id = V4L2_STD_PAL_BG;
+
+if (-1 == ioctl (fd, &VIDIOC-S-STD;, &std_id)) {
+ perror ("VIDIOC_S_STD");
+ exit (EXIT_FAILURE);
+}
+ </programlisting>
+ </example>
+ <section id="dv-timings">
+ <title>Digital Video (DV) Timings</title>
+ <para>
+ The video standards discussed so far has been dealing with Analog TV and the
+corresponding video timings. Today there are many more different hardware interfaces
+such as High Definition TV interfaces (HDMI), VGA, DVI connectors etc., that carry
+video signals and there is a need to extend the API to select the video timings
+for these interfaces. Since it is not possible to extend the &v4l2-std-id; due to
+the limited bits available, a new set of IOCTLs is added to set/get video timings at
+the input and output: </para><itemizedlist>
+ <listitem>
+ <para>DV Presets: Digital Video (DV) presets. These are IDs representing a
+video timing at the input/output. Presets are pre-defined timings implemented
+by the hardware according to video standards. A __u32 data type is used to represent
+a preset unlike the bit mask that is used in &v4l2-std-id; allowing future extensions
+to support as many different presets as needed.</para>
+ </listitem>
+ <listitem>
+ <para>Custom DV Timings: This will allow applications to define more detailed
+custom video timings for the interface. This includes parameters such as width, height,
+polarities, frontporch, backporch etc.
+ </para>
+ </listitem>
+ </itemizedlist>
+ <para>To enumerate and query the attributes of DV presets supported by a device,
+applications use the &VIDIOC-ENUM-DV-PRESETS; ioctl. To get the current DV preset,
+applications use the &VIDIOC-G-DV-PRESET; ioctl and to set a preset they use the
+&VIDIOC-S-DV-PRESET; ioctl.</para>
+ <para>To set custom DV timings for the device, applications use the
+&VIDIOC-S-DV-TIMINGS; ioctl and to get current custom DV timings they use the
+&VIDIOC-G-DV-TIMINGS; ioctl.</para>
+ <para>Applications can make use of the <xref linkend="input-capabilities" /> and
+<xref linkend="output-capabilities"/> flags to decide what ioctls are available to set the
+video timings for the device.</para>
+ </section>
+ </section>
+
+ &sub-controls;
+
+ <section id="format">
+ <title>Data Formats</title>
+
+ <section>
+ <title>Data Format Negotiation</title>
+
+ <para>Different devices exchange different kinds of data with
+applications, for example video images, raw or sliced VBI data, RDS
+datagrams. Even within one kind many different formats are possible,
+in particular an abundance of image formats. Although drivers must
+provide a default and the selection persists across closing and
+reopening a device, applications should always negotiate a data format
+before engaging in data exchange. Negotiation means the application
+asks for a particular format and the driver selects and reports the
+best the hardware can do to satisfy the request. Of course
+applications can also just query the current selection.</para>
+
+ <para>A single mechanism exists to negotiate all data formats
+using the aggregate &v4l2-format; and the &VIDIOC-G-FMT; and
+&VIDIOC-S-FMT; ioctls. Additionally the &VIDIOC-TRY-FMT; ioctl can be
+used to examine what the hardware <emphasis>could</emphasis> do,
+without actually selecting a new data format. The data formats
+supported by the V4L2 API are covered in the respective device section
+in <xref linkend="devices" />. For a closer look at image formats see
+<xref linkend="pixfmt" />.</para>
+
+ <para>The <constant>VIDIOC_S_FMT</constant> ioctl is a major
+turning-point in the initialization sequence. Prior to this point
+multiple panel applications can access the same device concurrently to
+select the current input, change controls or modify other properties.
+The first <constant>VIDIOC_S_FMT</constant> assigns a logical stream
+(video data, VBI data etc.) exclusively to one file descriptor.</para>
+
+ <para>Exclusive means no other application, more precisely no
+other file descriptor, can grab this stream or change device
+properties inconsistent with the negotiated parameters. A video
+standard change for example, when the new standard uses a different
+number of scan lines, can invalidate the selected image format.
+Therefore only the file descriptor owning the stream can make
+invalidating changes. Accordingly multiple file descriptors which
+grabbed different logical streams prevent each other from interfering
+with their settings. When for example video overlay is about to start
+or already in progress, simultaneous video capturing may be restricted
+to the same cropping and image size.</para>
+
+ <para>When applications omit the
+<constant>VIDIOC_S_FMT</constant> ioctl its locking side effects are
+implied by the next step, the selection of an I/O method with the
+&VIDIOC-REQBUFS; ioctl or implicit with the first &func-read; or
+&func-write; call.</para>
+
+ <para>Generally only one logical stream can be assigned to a
+file descriptor, the exception being drivers permitting simultaneous
+video capturing and overlay using the same file descriptor for
+compatibility with V4L and earlier versions of V4L2. Switching the
+logical stream or returning into "panel mode" is possible by closing
+and reopening the device. Drivers <emphasis>may</emphasis> support a
+switch using <constant>VIDIOC_S_FMT</constant>.</para>
+
+ <para>All drivers exchanging data with
+applications must support the <constant>VIDIOC_G_FMT</constant> and
+<constant>VIDIOC_S_FMT</constant> ioctl. Implementation of the
+<constant>VIDIOC_TRY_FMT</constant> is highly recommended but
+optional.</para>
+ </section>
+
+ <section>
+ <title>Image Format Enumeration</title>
+
+ <para>Apart of the generic format negotiation functions
+a special ioctl to enumerate all image formats supported by video
+capture, overlay or output devices is available.<footnote>
+ <para>Enumerating formats an application has no a-priori
+knowledge of (otherwise it could explicitly ask for them and need not
+enumerate) seems useless, but there are applications serving as proxy
+between drivers and the actual video applications for which this is
+useful.</para>
+ </footnote></para>
+
+ <para>The &VIDIOC-ENUM-FMT; ioctl must be supported
+by all drivers exchanging image data with applications.</para>
+
+ <important>
+ <para>Drivers are not supposed to convert image formats in
+kernel space. They must enumerate only formats directly supported by
+the hardware. If necessary driver writers should publish an example
+conversion routine or library for integration into applications.</para>
+ </important>
+ </section>
+ </section>
+
+ &sub-planar-apis;
+
+ <section id="crop">
+ <title>Image Cropping, Insertion and Scaling</title>
+
+ <para>Some video capture devices can sample a subsection of the
+picture and shrink or enlarge it to an image of arbitrary size. We
+call these abilities cropping and scaling. Some video output devices
+can scale an image up or down and insert it at an arbitrary scan line
+and horizontal offset into a video signal.</para>
+
+ <para>Applications can use the following API to select an area in
+the video signal, query the default area and the hardware limits.
+<emphasis>Despite their name, the &VIDIOC-CROPCAP;, &VIDIOC-G-CROP;
+and &VIDIOC-S-CROP; ioctls apply to input as well as output
+devices.</emphasis></para>
+
+ <para>Scaling requires a source and a target. On a video capture
+or overlay device the source is the video signal, and the cropping
+ioctls determine the area actually sampled. The target are images
+read by the application or overlaid onto the graphics screen. Their
+size (and position for an overlay) is negotiated with the
+&VIDIOC-G-FMT; and &VIDIOC-S-FMT; ioctls.</para>
+
+ <para>On a video output device the source are the images passed in
+by the application, and their size is again negotiated with the
+<constant>VIDIOC_G/S_FMT</constant> ioctls, or may be encoded in a
+compressed video stream. The target is the video signal, and the
+cropping ioctls determine the area where the images are
+inserted.</para>
+
+ <para>Source and target rectangles are defined even if the device
+does not support scaling or the <constant>VIDIOC_G/S_CROP</constant>
+ioctls. Their size (and position where applicable) will be fixed in
+this case. <emphasis>All capture and output device must support the
+<constant>VIDIOC_CROPCAP</constant> ioctl such that applications can
+determine if scaling takes place.</emphasis></para>
+
+ <section>
+ <title>Cropping Structures</title>
+
+ <figure id="crop-scale">
+ <title>Image Cropping, Insertion and Scaling</title>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="crop.pdf" format="PS" />
+ </imageobject>
+ <imageobject>
+ <imagedata fileref="crop.gif" format="GIF" />
+ </imageobject>
+ <textobject>
+ <phrase>The cropping, insertion and scaling process</phrase>
+ </textobject>
+ </mediaobject>
+ </figure>
+
+ <para>For capture devices the coordinates of the top left
+corner, width and height of the area which can be sampled is given by
+the <structfield>bounds</structfield> substructure of the
+&v4l2-cropcap; returned by the <constant>VIDIOC_CROPCAP</constant>
+ioctl. To support a wide range of hardware this specification does not
+define an origin or units. However by convention drivers should
+horizontally count unscaled samples relative to 0H (the leading edge
+of the horizontal sync pulse, see <xref linkend="vbi-hsync" />).
+Vertically ITU-R line
+numbers of the first field (<xref linkend="vbi-525" />, <xref
+linkend="vbi-625" />), multiplied by two if the driver can capture both
+fields.</para>
+
+ <para>The top left corner, width and height of the source
+rectangle, that is the area actually sampled, is given by &v4l2-crop;
+using the same coordinate system as &v4l2-cropcap;. Applications can
+use the <constant>VIDIOC_G_CROP</constant> and
+<constant>VIDIOC_S_CROP</constant> ioctls to get and set this
+rectangle. It must lie completely within the capture boundaries and
+the driver may further adjust the requested size and/or position
+according to hardware limitations.</para>
+
+ <para>Each capture device has a default source rectangle, given
+by the <structfield>defrect</structfield> substructure of
+&v4l2-cropcap;. The center of this rectangle shall align with the
+center of the active picture area of the video signal, and cover what
+the driver writer considers the complete picture. Drivers shall reset
+the source rectangle to the default when the driver is first loaded,
+but not later.</para>
+
+ <para>For output devices these structures and ioctls are used
+accordingly, defining the <emphasis>target</emphasis> rectangle where
+the images will be inserted into the video signal.</para>
+
+ </section>
+
+ <section>
+ <title>Scaling Adjustments</title>
+
+ <para>Video hardware can have various cropping, insertion and
+scaling limitations. It may only scale up or down, support only
+discrete scaling factors, or have different scaling abilities in
+horizontal and vertical direction. Also it may not support scaling at
+all. At the same time the &v4l2-crop; rectangle may have to be
+aligned, and both the source and target rectangles may have arbitrary
+upper and lower size limits. In particular the maximum
+<structfield>width</structfield> and <structfield>height</structfield>
+in &v4l2-crop; may be smaller than the
+&v4l2-cropcap;.<structfield>bounds</structfield> area. Therefore, as
+usual, drivers are expected to adjust the requested parameters and
+return the actual values selected.</para>
+
+ <para>Applications can change the source or the target rectangle
+first, as they may prefer a particular image size or a certain area in
+the video signal. If the driver has to adjust both to satisfy hardware
+limitations, the last requested rectangle shall take priority, and the
+driver should preferably adjust the opposite one. The &VIDIOC-TRY-FMT;
+ioctl however shall not change the driver state and therefore only
+adjust the requested rectangle.</para>
+
+ <para>Suppose scaling on a video capture device is restricted to
+a factor 1:1 or 2:1 in either direction and the target image size must
+be a multiple of 16 × 16 pixels. The source cropping
+rectangle is set to defaults, which are also the upper limit in this
+example, of 640 × 400 pixels at offset 0, 0. An
+application requests an image size of 300 × 225
+pixels, assuming video will be scaled down from the "full picture"
+accordingly. The driver sets the image size to the closest possible
+values 304 × 224, then chooses the cropping rectangle
+closest to the requested size, that is 608 × 224
+(224 × 2:1 would exceed the limit 400). The offset
+0, 0 is still valid, thus unmodified. Given the default cropping
+rectangle reported by <constant>VIDIOC_CROPCAP</constant> the
+application can easily propose another offset to center the cropping
+rectangle.</para>
+
+ <para>Now the application may insist on covering an area using a
+picture aspect ratio closer to the original request, so it asks for a
+cropping rectangle of 608 × 456 pixels. The present
+scaling factors limit cropping to 640 × 384, so the
+driver returns the cropping size 608 × 384 and adjusts
+the image size to closest possible 304 × 192.</para>
+
+ </section>
+
+ <section>
+ <title>Examples</title>
+
+ <para>Source and target rectangles shall remain unchanged across
+closing and reopening a device, such that piping data into or out of a
+device will work without special preparations. More advanced
+applications should ensure the parameters are suitable before starting
+I/O.</para>
+
+ <example>
+ <title>Resetting the cropping parameters</title>
+
+ <para>(A video capture device is assumed; change
+<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant> for other
+devices.)</para>
+
+ <programlisting>
+&v4l2-cropcap; cropcap;
+&v4l2-crop; crop;
+
+memset (&cropcap, 0, sizeof (cropcap));
+cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+if (-1 == ioctl (fd, &VIDIOC-CROPCAP;, &cropcap)) {
+ perror ("VIDIOC_CROPCAP");
+ exit (EXIT_FAILURE);
+}
+
+memset (&crop, 0, sizeof (crop));
+crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+crop.c = cropcap.defrect;
+
+/* Ignore if cropping is not supported (EINVAL). */
+
+if (-1 == ioctl (fd, &VIDIOC-S-CROP;, &crop)
+ && errno != EINVAL) {
+ perror ("VIDIOC_S_CROP");
+ exit (EXIT_FAILURE);
+}
+ </programlisting>
+ </example>
+
+ <example>
+ <title>Simple downscaling</title>
+
+ <para>(A video capture device is assumed.)</para>
+
+ <programlisting>
+&v4l2-cropcap; cropcap;
+&v4l2-format; format;
+
+reset_cropping_parameters ();
+
+/* Scale down to 1/4 size of full picture. */
+
+memset (&format, 0, sizeof (format)); /* defaults */
+
+format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+format.fmt.pix.width = cropcap.defrect.width >> 1;
+format.fmt.pix.height = cropcap.defrect.height >> 1;
+format.fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
+
+if (-1 == ioctl (fd, &VIDIOC-S-FMT;, &format)) {
+ perror ("VIDIOC_S_FORMAT");
+ exit (EXIT_FAILURE);
+}
+
+/* We could check the actual image size now, the actual scaling factor
+ or if the driver can scale at all. */
+ </programlisting>
+ </example>
+
+ <example>
+ <title>Selecting an output area</title>
+
+ <programlisting>
+&v4l2-cropcap; cropcap;
+&v4l2-crop; crop;
+
+memset (&cropcap, 0, sizeof (cropcap));
+cropcap.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+
+if (-1 == ioctl (fd, VIDIOC_CROPCAP;, &cropcap)) {
+ perror ("VIDIOC_CROPCAP");
+ exit (EXIT_FAILURE);
+}
+
+memset (&crop, 0, sizeof (crop));
+
+crop.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+crop.c = cropcap.defrect;
+
+/* Scale the width and height to 50 % of their original size
+ and center the output. */
+
+crop.c.width /= 2;
+crop.c.height /= 2;
+crop.c.left += crop.c.width / 2;
+crop.c.top += crop.c.height / 2;
+
+/* Ignore if cropping is not supported (EINVAL). */
+
+if (-1 == ioctl (fd, VIDIOC_S_CROP, &crop)
+ && errno != EINVAL) {
+ perror ("VIDIOC_S_CROP");
+ exit (EXIT_FAILURE);
+}
+</programlisting>
+ </example>
+
+ <example>
+ <title>Current scaling factor and pixel aspect</title>
+
+ <para>(A video capture device is assumed.)</para>
+
+ <programlisting>
+&v4l2-cropcap; cropcap;
+&v4l2-crop; crop;
+&v4l2-format; format;
+double hscale, vscale;
+double aspect;
+int dwidth, dheight;
+
+memset (&cropcap, 0, sizeof (cropcap));
+cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+if (-1 == ioctl (fd, &VIDIOC-CROPCAP;, &cropcap)) {
+ perror ("VIDIOC_CROPCAP");
+ exit (EXIT_FAILURE);
+}
+
+memset (&crop, 0, sizeof (crop));
+crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+if (-1 == ioctl (fd, &VIDIOC-G-CROP;, &crop)) {
+ if (errno != EINVAL) {
+ perror ("VIDIOC_G_CROP");
+ exit (EXIT_FAILURE);
+ }
+
+ /* Cropping not supported. */
+ crop.c = cropcap.defrect;
+}
+
+memset (&format, 0, sizeof (format));
+format.fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+if (-1 == ioctl (fd, &VIDIOC-G-FMT;, &format)) {
+ perror ("VIDIOC_G_FMT");
+ exit (EXIT_FAILURE);
+}
+
+/* The scaling applied by the driver. */
+
+hscale = format.fmt.pix.width / (double) crop.c.width;
+vscale = format.fmt.pix.height / (double) crop.c.height;
+
+aspect = cropcap.pixelaspect.numerator /
+ (double) cropcap.pixelaspect.denominator;
+aspect = aspect * hscale / vscale;
+
+/* Devices following ITU-R BT.601 do not capture
+ square pixels. For playback on a computer monitor
+ we should scale the images to this size. */
+
+dwidth = format.fmt.pix.width / aspect;
+dheight = format.fmt.pix.height;
+ </programlisting>
+ </example>
+ </section>
+ </section>
+
+ <section id="streaming-par">
+ <title>Streaming Parameters</title>
+
+ <para>Streaming parameters are intended to optimize the video
+capture process as well as I/O. Presently applications can request a
+high quality capture mode with the &VIDIOC-S-PARM; ioctl.</para>
+
+ <para>The current video standard determines a nominal number of
+frames per second. If less than this number of frames is to be
+captured or output, applications can request frame skipping or
+duplicating on the driver side. This is especially useful when using
+the &func-read; or &func-write;, which are not augmented by timestamps
+or sequence counters, and to avoid unnecessary data copying.</para>
+
+ <para>Finally these ioctls can be used to determine the number of
+buffers used internally by a driver in read/write mode. For
+implications see the section discussing the &func-read;
+function.</para>
+
+ <para>To get and set the streaming parameters applications call
+the &VIDIOC-G-PARM; and &VIDIOC-S-PARM; ioctl, respectively. They take
+a pointer to a &v4l2-streamparm;, which contains a union holding
+separate parameters for input and output devices.</para>
+
+ <para>These ioctls are optional, drivers need not implement
+them. If so, they return the &EINVAL;.</para>
+ </section>
+
+ <!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "v4l2.sgml"
+indent-tabs-mode: nil
+End:
+ -->
diff --git a/Documentation/DocBook/media/v4l/compat.xml b/Documentation/DocBook/media/v4l/compat.xml
new file mode 100644
index 0000000..b68698f
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/compat.xml
@@ -0,0 +1,2517 @@
+ <title>Changes</title>
+
+ <para>The following chapters document the evolution of the V4L2 API,
+errata or extensions. They are also intended to help application and
+driver writers to port or update their code.</para>
+
+ <section id="diff-v4l">
+ <title>Differences between V4L and V4L2</title>
+
+ <para>The Video For Linux API was first introduced in Linux 2.1 to
+unify and replace various TV and radio device related interfaces,
+developed independently by driver writers in prior years. Starting
+with Linux 2.5 the much improved V4L2 API replaces the V4L API.
+The support for the old V4L calls were removed from Kernel, but the
+library <xref linkend="libv4l" /> supports the conversion of a V4L
+API system call into a V4L2 one.</para>
+
+ <section>
+ <title>Opening and Closing Devices</title>
+
+ <para>For compatibility reasons the character device file names
+recommended for V4L2 video capture, overlay, radio and raw
+vbi capture devices did not change from those used by V4L. They are
+listed in <xref linkend="devices" /> and below in <xref
+ linkend="v4l-dev" />.</para>
+
+ <para>The teletext devices (minor range 192-223) have been removed in
+V4L2 and no longer exist. There is no hardware available anymore for handling
+pure teletext. Instead raw or sliced VBI is used.</para>
+
+ <para>The V4L <filename>videodev</filename> module automatically
+assigns minor numbers to drivers in load order, depending on the
+registered device type. We recommend that V4L2 drivers by default
+register devices with the same numbers, but the system administrator
+can assign arbitrary minor numbers using driver module options. The
+major device number remains 81.</para>
+
+ <table id="v4l-dev">
+ <title>V4L Device Types, Names and Numbers</title>
+ <tgroup cols="3">
+ <thead>
+ <row>
+ <entry>Device Type</entry>
+ <entry>File Name</entry>
+ <entry>Minor Numbers</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry>Video capture and overlay</entry>
+ <entry><para><filename>/dev/video</filename> and
+<filename>/dev/bttv0</filename><footnote> <para>According to
+Documentation/devices.txt these should be symbolic links to
+<filename>/dev/video0</filename>. Note the original bttv interface is
+not compatible with V4L or V4L2.</para> </footnote>,
+<filename>/dev/video0</filename> to
+<filename>/dev/video63</filename></para></entry>
+ <entry>0-63</entry>
+ </row>
+ <row>
+ <entry>Radio receiver</entry>
+ <entry><para><filename>/dev/radio</filename><footnote>
+ <para>According to
+<filename>Documentation/devices.txt</filename> a symbolic link to
+<filename>/dev/radio0</filename>.</para>
+ </footnote>, <filename>/dev/radio0</filename> to
+<filename>/dev/radio63</filename></para></entry>
+ <entry>64-127</entry>
+ </row>
+ <row>
+ <entry>Raw VBI capture</entry>
+ <entry><para><filename>/dev/vbi</filename>,
+<filename>/dev/vbi0</filename> to
+<filename>/dev/vbi31</filename></para></entry>
+ <entry>224-255</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <para>V4L prohibits (or used to prohibit) multiple opens of a
+device file. V4L2 drivers <emphasis>may</emphasis> support multiple
+opens, see <xref linkend="open" /> for details and consequences.</para>
+
+ <para>V4L drivers respond to V4L2 ioctls with an &EINVAL;.</para>
+ </section>
+
+ <section>
+ <title>Querying Capabilities</title>
+
+ <para>The V4L <constant>VIDIOCGCAP</constant> ioctl is
+equivalent to V4L2's &VIDIOC-QUERYCAP;.</para>
+
+ <para>The <structfield>name</structfield> field in struct
+<structname>video_capability</structname> became
+<structfield>card</structfield> in &v4l2-capability;,
+<structfield>type</structfield> was replaced by
+<structfield>capabilities</structfield>. Note V4L2 does not
+distinguish between device types like this, better think of basic
+video input, video output and radio devices supporting a set of
+related functions like video capturing, video overlay and VBI
+capturing. See <xref linkend="open" /> for an
+introduction.<informaltable>
+ <tgroup cols="3">
+ <thead>
+ <row>
+ <entry>struct
+<structname>video_capability</structname>
+<structfield>type</structfield></entry>
+ <entry>&v4l2-capability;
+<structfield>capabilities</structfield> flags</entry>
+ <entry>Purpose</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><constant>VID_TYPE_CAPTURE</constant></entry>
+ <entry><constant>V4L2_CAP_VIDEO_CAPTURE</constant></entry>
+ <entry>The <link linkend="capture">video
+capture</link> interface is supported.</entry>
+ </row>
+ <row>
+ <entry><constant>VID_TYPE_TUNER</constant></entry>
+ <entry><constant>V4L2_CAP_TUNER</constant></entry>
+ <entry>The device has a <link linkend="tuner">tuner or
+modulator</link>.</entry>
+ </row>
+ <row>
+ <entry><constant>VID_TYPE_TELETEXT</constant></entry>
+ <entry><constant>V4L2_CAP_VBI_CAPTURE</constant></entry>
+ <entry>The <link linkend="raw-vbi">raw VBI
+capture</link> interface is supported.</entry>
+ </row>
+ <row>
+ <entry><constant>VID_TYPE_OVERLAY</constant></entry>
+ <entry><constant>V4L2_CAP_VIDEO_OVERLAY</constant></entry>
+ <entry>The <link linkend="overlay">video
+overlay</link> interface is supported.</entry>
+ </row>
+ <row>
+ <entry><constant>VID_TYPE_CHROMAKEY</constant></entry>
+ <entry><constant>V4L2_FBUF_CAP_CHROMAKEY</constant> in
+field <structfield>capability</structfield> of
+&v4l2-framebuffer;</entry>
+ <entry>Whether chromakey overlay is supported. For
+more information on overlay see
+<xref linkend="overlay" />.</entry>
+ </row>
+ <row>
+ <entry><constant>VID_TYPE_CLIPPING</constant></entry>
+ <entry><constant>V4L2_FBUF_CAP_LIST_CLIPPING</constant>
+and <constant>V4L2_FBUF_CAP_BITMAP_CLIPPING</constant> in field
+<structfield>capability</structfield> of &v4l2-framebuffer;</entry>
+ <entry>Whether clipping the overlaid image is
+supported, see <xref linkend="overlay" />.</entry>
+ </row>
+ <row>
+ <entry><constant>VID_TYPE_FRAMERAM</constant></entry>
+ <entry><constant>V4L2_FBUF_CAP_EXTERNOVERLAY</constant>
+<emphasis>not set</emphasis> in field
+<structfield>capability</structfield> of &v4l2-framebuffer;</entry>
+ <entry>Whether overlay overwrites frame buffer memory,
+see <xref linkend="overlay" />.</entry>
+ </row>
+ <row>
+ <entry><constant>VID_TYPE_SCALES</constant></entry>
+ <entry><constant>-</constant></entry>
+ <entry>This flag indicates if the hardware can scale
+images. The V4L2 API implies the scale factor by setting the cropping
+dimensions and image size with the &VIDIOC-S-CROP; and &VIDIOC-S-FMT;
+ioctl, respectively. The driver returns the closest sizes possible.
+For more information on cropping and scaling see <xref
+ linkend="crop" />.</entry>
+ </row>
+ <row>
+ <entry><constant>VID_TYPE_MONOCHROME</constant></entry>
+ <entry><constant>-</constant></entry>
+ <entry>Applications can enumerate the supported image
+formats with the &VIDIOC-ENUM-FMT; ioctl to determine if the device
+supports grey scale capturing only. For more information on image
+formats see <xref linkend="pixfmt" />.</entry>
+ </row>
+ <row>
+ <entry><constant>VID_TYPE_SUBCAPTURE</constant></entry>
+ <entry><constant>-</constant></entry>
+ <entry>Applications can call the &VIDIOC-G-CROP; ioctl
+to determine if the device supports capturing a subsection of the full
+picture ("cropping" in V4L2). If not, the ioctl returns the &EINVAL;.
+For more information on cropping and scaling see <xref
+ linkend="crop" />.</entry>
+ </row>
+ <row>
+ <entry><constant>VID_TYPE_MPEG_DECODER</constant></entry>
+ <entry><constant>-</constant></entry>
+ <entry>Applications can enumerate the supported image
+formats with the &VIDIOC-ENUM-FMT; ioctl to determine if the device
+supports MPEG streams.</entry>
+ </row>
+ <row>
+ <entry><constant>VID_TYPE_MPEG_ENCODER</constant></entry>
+ <entry><constant>-</constant></entry>
+ <entry>See above.</entry>
+ </row>
+ <row>
+ <entry><constant>VID_TYPE_MJPEG_DECODER</constant></entry>
+ <entry><constant>-</constant></entry>
+ <entry>See above.</entry>
+ </row>
+ <row>
+ <entry><constant>VID_TYPE_MJPEG_ENCODER</constant></entry>
+ <entry><constant>-</constant></entry>
+ <entry>See above.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable></para>
+
+ <para>The <structfield>audios</structfield> field was replaced
+by <structfield>capabilities</structfield> flag
+<constant>V4L2_CAP_AUDIO</constant>, indicating
+<emphasis>if</emphasis> the device has any audio inputs or outputs. To
+determine their number applications can enumerate audio inputs with
+the &VIDIOC-G-AUDIO; ioctl. The audio ioctls are described in <xref
+ linkend="audio" />.</para>
+
+ <para>The <structfield>maxwidth</structfield>,
+<structfield>maxheight</structfield>,
+<structfield>minwidth</structfield> and
+<structfield>minheight</structfield> fields were removed. Calling the
+&VIDIOC-S-FMT; or &VIDIOC-TRY-FMT; ioctl with the desired dimensions
+returns the closest size possible, taking into account the current
+video standard, cropping and scaling limitations.</para>
+ </section>
+
+ <section>
+ <title>Video Sources</title>
+
+ <para>V4L provides the <constant>VIDIOCGCHAN</constant> and
+<constant>VIDIOCSCHAN</constant> ioctl using struct
+<structname>video_channel</structname> to enumerate
+the video inputs of a V4L device. The equivalent V4L2 ioctls
+are &VIDIOC-ENUMINPUT;, &VIDIOC-G-INPUT; and &VIDIOC-S-INPUT;
+using &v4l2-input; as discussed in <xref linkend="video" />.</para>
+
+ <para>The <structfield>channel</structfield> field counting
+inputs was renamed to <structfield>index</structfield>, the video
+input types were renamed as follows: <informaltable>
+ <tgroup cols="2">
+ <thead>
+ <row>
+ <entry>struct <structname>video_channel</structname>
+<structfield>type</structfield></entry>
+ <entry>&v4l2-input;
+<structfield>type</structfield></entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><constant>VIDEO_TYPE_TV</constant></entry>
+ <entry><constant>V4L2_INPUT_TYPE_TUNER</constant></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_TYPE_CAMERA</constant></entry>
+ <entry><constant>V4L2_INPUT_TYPE_CAMERA</constant></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable></para>
+
+ <para>Unlike the <structfield>tuners</structfield> field
+expressing the number of tuners of this input, V4L2 assumes each video
+input is connected to at most one tuner. However a tuner can have more
+than one input, &ie; RF connectors, and a device can have multiple
+tuners. The index number of the tuner associated with the input, if
+any, is stored in field <structfield>tuner</structfield> of
+&v4l2-input;. Enumeration of tuners is discussed in <xref
+ linkend="tuner" />.</para>
+
+ <para>The redundant <constant>VIDEO_VC_TUNER</constant> flag was
+dropped. Video inputs associated with a tuner are of type
+<constant>V4L2_INPUT_TYPE_TUNER</constant>. The
+<constant>VIDEO_VC_AUDIO</constant> flag was replaced by the
+<structfield>audioset</structfield> field. V4L2 considers devices with
+up to 32 audio inputs. Each set bit in the
+<structfield>audioset</structfield> field represents one audio input
+this video input combines with. For information about audio inputs and
+how to switch between them see <xref linkend="audio" />.</para>
+
+ <para>The <structfield>norm</structfield> field describing the
+supported video standards was replaced by
+<structfield>std</structfield>. The V4L specification mentions a flag
+<constant>VIDEO_VC_NORM</constant> indicating whether the standard can
+be changed. This flag was a later addition together with the
+<structfield>norm</structfield> field and has been removed in the
+meantime. V4L2 has a similar, albeit more comprehensive approach
+to video standards, see <xref linkend="standard" /> for more
+information.</para>
+ </section>
+
+ <section>
+ <title>Tuning</title>
+
+ <para>The V4L <constant>VIDIOCGTUNER</constant> and
+<constant>VIDIOCSTUNER</constant> ioctl and struct
+<structname>video_tuner</structname> can be used to enumerate the
+tuners of a V4L TV or radio device. The equivalent V4L2 ioctls are
+&VIDIOC-G-TUNER; and &VIDIOC-S-TUNER; using &v4l2-tuner;. Tuners are
+covered in <xref linkend="tuner" />.</para>
+
+ <para>The <structfield>tuner</structfield> field counting tuners
+was renamed to <structfield>index</structfield>. The fields
+<structfield>name</structfield>, <structfield>rangelow</structfield>
+and <structfield>rangehigh</structfield> remained unchanged.</para>
+
+ <para>The <constant>VIDEO_TUNER_PAL</constant>,
+<constant>VIDEO_TUNER_NTSC</constant> and
+<constant>VIDEO_TUNER_SECAM</constant> flags indicating the supported
+video standards were dropped. This information is now contained in the
+associated &v4l2-input;. No replacement exists for the
+<constant>VIDEO_TUNER_NORM</constant> flag indicating whether the
+video standard can be switched. The <structfield>mode</structfield>
+field to select a different video standard was replaced by a whole new
+set of ioctls and structures described in <xref linkend="standard" />.
+Due to its ubiquity it should be mentioned the BTTV driver supports
+several standards in addition to the regular
+<constant>VIDEO_MODE_PAL</constant> (0),
+<constant>VIDEO_MODE_NTSC</constant>,
+<constant>VIDEO_MODE_SECAM</constant> and
+<constant>VIDEO_MODE_AUTO</constant> (3). Namely N/PAL Argentina,
+M/PAL, N/PAL, and NTSC Japan with numbers 3-6 (sic).</para>
+
+ <para>The <constant>VIDEO_TUNER_STEREO_ON</constant> flag
+indicating stereo reception became
+<constant>V4L2_TUNER_SUB_STEREO</constant> in field
+<structfield>rxsubchans</structfield>. This field also permits the
+detection of monaural and bilingual audio, see the definition of
+&v4l2-tuner; for details. Presently no replacement exists for the
+<constant>VIDEO_TUNER_RDS_ON</constant> and
+<constant>VIDEO_TUNER_MBS_ON</constant> flags.</para>
+
+ <para> The <constant>VIDEO_TUNER_LOW</constant> flag was renamed
+to <constant>V4L2_TUNER_CAP_LOW</constant> in the &v4l2-tuner;
+<structfield>capability</structfield> field.</para>
+
+ <para>The <constant>VIDIOCGFREQ</constant> and
+<constant>VIDIOCSFREQ</constant> ioctl to change the tuner frequency
+where renamed to &VIDIOC-G-FREQUENCY; and &VIDIOC-S-FREQUENCY;. They
+take a pointer to a &v4l2-frequency; instead of an unsigned long
+integer.</para>
+ </section>
+
+ <section id="v4l-image-properties">
+ <title>Image Properties</title>
+
+ <para>V4L2 has no equivalent of the
+<constant>VIDIOCGPICT</constant> and <constant>VIDIOCSPICT</constant>
+ioctl and struct <structname>video_picture</structname>. The following
+fields where replaced by V4L2 controls accessible with the
+&VIDIOC-QUERYCTRL;, &VIDIOC-G-CTRL; and &VIDIOC-S-CTRL; ioctls:<informaltable>
+ <tgroup cols="2">
+ <thead>
+ <row>
+ <entry>struct <structname>video_picture</structname></entry>
+ <entry>V4L2 Control ID</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><structfield>brightness</structfield></entry>
+ <entry><constant>V4L2_CID_BRIGHTNESS</constant></entry>
+ </row>
+ <row>
+ <entry><structfield>hue</structfield></entry>
+ <entry><constant>V4L2_CID_HUE</constant></entry>
+ </row>
+ <row>
+ <entry><structfield>colour</structfield></entry>
+ <entry><constant>V4L2_CID_SATURATION</constant></entry>
+ </row>
+ <row>
+ <entry><structfield>contrast</structfield></entry>
+ <entry><constant>V4L2_CID_CONTRAST</constant></entry>
+ </row>
+ <row>
+ <entry><structfield>whiteness</structfield></entry>
+ <entry><constant>V4L2_CID_WHITENESS</constant></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable></para>
+
+ <para>The V4L picture controls are assumed to range from 0 to
+65535 with no particular reset value. The V4L2 API permits arbitrary
+limits and defaults which can be queried with the &VIDIOC-QUERYCTRL;
+ioctl. For general information about controls see <xref
+linkend="control" />.</para>
+
+ <para>The <structfield>depth</structfield> (average number of
+bits per pixel) of a video image is implied by the selected image
+format. V4L2 does not explicitely provide such information assuming
+applications recognizing the format are aware of the image depth and
+others need not know. The <structfield>palette</structfield> field
+moved into the &v4l2-pix-format;:<informaltable>
+ <tgroup cols="2">
+ <thead>
+ <row>
+ <entry>struct <structname>video_picture</structname>
+<structfield>palette</structfield></entry>
+ <entry>&v4l2-pix-format;
+<structfield>pixfmt</structfield></entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><constant>VIDEO_PALETTE_GREY</constant></entry>
+ <entry><para><link
+linkend="V4L2-PIX-FMT-GREY"><constant>V4L2_PIX_FMT_GREY</constant></link></para></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_HI240</constant></entry>
+ <entry><para><link
+linkend="pixfmt-reserved"><constant>V4L2_PIX_FMT_HI240</constant></link><footnote>
+ <para>This is a custom format used by the BTTV
+driver, not one of the V4L2 standard formats.</para>
+ </footnote></para></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_RGB565</constant></entry>
+ <entry><para><link
+linkend="pixfmt-rgb"><constant>V4L2_PIX_FMT_RGB565</constant></link></para></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_RGB555</constant></entry>
+ <entry><para><link
+linkend="pixfmt-rgb"><constant>V4L2_PIX_FMT_RGB555</constant></link></para></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_RGB24</constant></entry>
+ <entry><para><link
+linkend="pixfmt-rgb"><constant>V4L2_PIX_FMT_BGR24</constant></link></para></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_RGB32</constant></entry>
+ <entry><para><link
+linkend="pixfmt-rgb"><constant>V4L2_PIX_FMT_BGR32</constant></link><footnote>
+ <para>Presumably all V4L RGB formats are
+little-endian, although some drivers might interpret them according to machine endianess. V4L2 defines little-endian, big-endian and red/blue
+swapped variants. For details see <xref linkend="pixfmt-rgb" />.</para>
+ </footnote></para></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_YUV422</constant></entry>
+ <entry><para><link
+linkend="V4L2-PIX-FMT-YUYV"><constant>V4L2_PIX_FMT_YUYV</constant></link></para></entry>
+ </row>
+ <row>
+ <entry><para><constant>VIDEO_PALETTE_YUYV</constant><footnote>
+ <para><constant>VIDEO_PALETTE_YUV422</constant>
+and <constant>VIDEO_PALETTE_YUYV</constant> are the same formats. Some
+V4L drivers respond to one, some to the other.</para>
+ </footnote></para></entry>
+ <entry><para><link
+linkend="V4L2-PIX-FMT-YUYV"><constant>V4L2_PIX_FMT_YUYV</constant></link></para></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_UYVY</constant></entry>
+ <entry><para><link
+linkend="V4L2-PIX-FMT-UYVY"><constant>V4L2_PIX_FMT_UYVY</constant></link></para></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_YUV420</constant></entry>
+ <entry>None</entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_YUV411</constant></entry>
+ <entry><para><link
+linkend="V4L2-PIX-FMT-Y41P"><constant>V4L2_PIX_FMT_Y41P</constant></link><footnote>
+ <para>Not to be confused with
+<constant>V4L2_PIX_FMT_YUV411P</constant>, which is a planar
+format.</para> </footnote></para></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_RAW</constant></entry>
+ <entry><para>None<footnote> <para>V4L explains this
+as: "RAW capture (BT848)"</para> </footnote></para></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_YUV422P</constant></entry>
+ <entry><para><link
+linkend="V4L2-PIX-FMT-YUV422P"><constant>V4L2_PIX_FMT_YUV422P</constant></link></para></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_YUV411P</constant></entry>
+ <entry><para><link
+linkend="V4L2-PIX-FMT-YUV411P"><constant>V4L2_PIX_FMT_YUV411P</constant></link><footnote>
+ <para>Not to be confused with
+<constant>V4L2_PIX_FMT_Y41P</constant>, which is a packed
+format.</para> </footnote></para></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_YUV420P</constant></entry>
+ <entry><para><link
+linkend="V4L2-PIX-FMT-YVU420"><constant>V4L2_PIX_FMT_YVU420</constant></link></para></entry>
+ </row>
+ <row>
+ <entry><constant>VIDEO_PALETTE_YUV410P</constant></entry>
+ <entry><para><link
+linkend="V4L2-PIX-FMT-YVU410"><constant>V4L2_PIX_FMT_YVU410</constant></link></para></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable></para>
+
+ <para>V4L2 image formats are defined in <xref
+linkend="pixfmt" />. The image format can be selected with the
+&VIDIOC-S-FMT; ioctl.</para>
+ </section>
+
+ <section>
+ <title>Audio</title>
+
+ <para>The <constant>VIDIOCGAUDIO</constant> and
+<constant>VIDIOCSAUDIO</constant> ioctl and struct
+<structname>video_audio</structname> are used to enumerate the
+audio inputs of a V4L device. The equivalent V4L2 ioctls are
+&VIDIOC-G-AUDIO; and &VIDIOC-S-AUDIO; using &v4l2-audio; as
+discussed in <xref linkend="audio" />.</para>
+
+ <para>The <structfield>audio</structfield> "channel number"
+field counting audio inputs was renamed to
+<structfield>index</structfield>.</para>
+
+ <para>On <constant>VIDIOCSAUDIO</constant> the
+<structfield>mode</structfield> field selects <emphasis>one</emphasis>
+of the <constant>VIDEO_SOUND_MONO</constant>,
+<constant>VIDEO_SOUND_STEREO</constant>,
+<constant>VIDEO_SOUND_LANG1</constant> or
+<constant>VIDEO_SOUND_LANG2</constant> audio demodulation modes. When
+the current audio standard is BTSC
+<constant>VIDEO_SOUND_LANG2</constant> refers to SAP and
+<constant>VIDEO_SOUND_LANG1</constant> is meaningless. Also
+undocumented in the V4L specification, there is no way to query the
+selected mode. On <constant>VIDIOCGAUDIO</constant> the driver returns
+the <emphasis>actually received</emphasis> audio programmes in this
+field. In the V4L2 API this information is stored in the &v4l2-tuner;
+<structfield>rxsubchans</structfield> and
+<structfield>audmode</structfield> fields, respectively. See <xref
+linkend="tuner" /> for more information on tuners. Related to audio
+modes &v4l2-audio; also reports if this is a mono or stereo
+input, regardless if the source is a tuner.</para>
+
+ <para>The following fields where replaced by V4L2 controls
+accessible with the &VIDIOC-QUERYCTRL;, &VIDIOC-G-CTRL; and
+&VIDIOC-S-CTRL; ioctls:<informaltable>
+ <tgroup cols="2">
+ <thead>
+ <row>
+ <entry>struct
+<structname>video_audio</structname></entry>
+ <entry>V4L2 Control ID</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><structfield>volume</structfield></entry>
+ <entry><constant>V4L2_CID_AUDIO_VOLUME</constant></entry>
+ </row>
+ <row>
+ <entry><structfield>bass</structfield></entry>
+ <entry><constant>V4L2_CID_AUDIO_BASS</constant></entry>
+ </row>
+ <row>
+ <entry><structfield>treble</structfield></entry>
+ <entry><constant>V4L2_CID_AUDIO_TREBLE</constant></entry>
+ </row>
+ <row>
+ <entry><structfield>balance</structfield></entry>
+ <entry><constant>V4L2_CID_AUDIO_BALANCE</constant></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable></para>
+
+ <para>To determine which of these controls are supported by a
+driver V4L provides the <structfield>flags</structfield>
+<constant>VIDEO_AUDIO_VOLUME</constant>,
+<constant>VIDEO_AUDIO_BASS</constant>,
+<constant>VIDEO_AUDIO_TREBLE</constant> and
+<constant>VIDEO_AUDIO_BALANCE</constant>. In the V4L2 API the
+&VIDIOC-QUERYCTRL; ioctl reports if the respective control is
+supported. Accordingly the <constant>VIDEO_AUDIO_MUTABLE</constant>
+and <constant>VIDEO_AUDIO_MUTE</constant> flags where replaced by the
+boolean <constant>V4L2_CID_AUDIO_MUTE</constant> control.</para>
+
+ <para>All V4L2 controls have a <structfield>step</structfield>
+attribute replacing the struct <structname>video_audio</structname>
+<structfield>step</structfield> field. The V4L audio controls are
+assumed to range from 0 to 65535 with no particular reset value. The
+V4L2 API permits arbitrary limits and defaults which can be queried
+with the &VIDIOC-QUERYCTRL; ioctl. For general information about
+controls see <xref linkend="control" />.</para>
+ </section>
+
+ <section>
+ <title>Frame Buffer Overlay</title>
+
+ <para>The V4L2 ioctls equivalent to
+<constant>VIDIOCGFBUF</constant> and <constant>VIDIOCSFBUF</constant>
+are &VIDIOC-G-FBUF; and &VIDIOC-S-FBUF;. The
+<structfield>base</structfield> field of struct
+<structname>video_buffer</structname> remained unchanged, except V4L2
+defines a flag to indicate non-destructive overlays instead of a
+<constant>NULL</constant> pointer. All other fields moved into the
+&v4l2-pix-format; <structfield>fmt</structfield> substructure of
+&v4l2-framebuffer;. The <structfield>depth</structfield> field was
+replaced by <structfield>pixelformat</structfield>. See <xref
+ linkend="pixfmt-rgb" /> for a list of RGB formats and their
+respective color depths.</para>
+
+ <para>Instead of the special ioctls
+<constant>VIDIOCGWIN</constant> and <constant>VIDIOCSWIN</constant>
+V4L2 uses the general-purpose data format negotiation ioctls
+&VIDIOC-G-FMT; and &VIDIOC-S-FMT;. They take a pointer to a
+&v4l2-format; as argument. Here the <structfield>win</structfield>
+member of the <structfield>fmt</structfield> union is used, a
+&v4l2-window;.</para>
+
+ <para>The <structfield>x</structfield>,
+<structfield>y</structfield>, <structfield>width</structfield> and
+<structfield>height</structfield> fields of struct
+<structname>video_window</structname> moved into &v4l2-rect;
+substructure <structfield>w</structfield> of struct
+<structname>v4l2_window</structname>. The
+<structfield>chromakey</structfield>,
+<structfield>clips</structfield>, and
+<structfield>clipcount</structfield> fields remained unchanged. Struct
+<structname>video_clip</structname> was renamed to &v4l2-clip;, also
+containing a struct <structname>v4l2_rect</structname>, but the
+semantics are still the same.</para>
+
+ <para>The <constant>VIDEO_WINDOW_INTERLACE</constant> flag was
+dropped. Instead applications must set the
+<structfield>field</structfield> field to
+<constant>V4L2_FIELD_ANY</constant> or
+<constant>V4L2_FIELD_INTERLACED</constant>. The
+<constant>VIDEO_WINDOW_CHROMAKEY</constant> flag moved into
+&v4l2-framebuffer;, under the new name
+<constant>V4L2_FBUF_FLAG_CHROMAKEY</constant>.</para>
+
+ <para>In V4L, storing a bitmap pointer in
+<structfield>clips</structfield> and setting
+<structfield>clipcount</structfield> to
+<constant>VIDEO_CLIP_BITMAP</constant> (-1) requests bitmap
+clipping, using a fixed size bitmap of 1024 × 625 bits. Struct
+<structname>v4l2_window</structname> has a separate
+<structfield>bitmap</structfield> pointer field for this purpose and
+the bitmap size is determined by <structfield>w.width</structfield> and
+<structfield>w.height</structfield>.</para>
+
+ <para>The <constant>VIDIOCCAPTURE</constant> ioctl to enable or
+disable overlay was renamed to &VIDIOC-OVERLAY;.</para>
+ </section>
+
+ <section>
+ <title>Cropping</title>
+
+ <para>To capture only a subsection of the full picture V4L
+defines the <constant>VIDIOCGCAPTURE</constant> and
+<constant>VIDIOCSCAPTURE</constant> ioctls using struct
+<structname>video_capture</structname>. The equivalent V4L2 ioctls are
+&VIDIOC-G-CROP; and &VIDIOC-S-CROP; using &v4l2-crop;, and the related
+&VIDIOC-CROPCAP; ioctl. This is a rather complex matter, see
+<xref linkend="crop" /> for details.</para>
+
+ <para>The <structfield>x</structfield>,
+<structfield>y</structfield>, <structfield>width</structfield> and
+<structfield>height</structfield> fields moved into &v4l2-rect;
+substructure <structfield>c</structfield> of struct
+<structname>v4l2_crop</structname>. The
+<structfield>decimation</structfield> field was dropped. In the V4L2
+API the scaling factor is implied by the size of the cropping
+rectangle and the size of the captured or overlaid image.</para>
+
+ <para>The <constant>VIDEO_CAPTURE_ODD</constant>
+and <constant>VIDEO_CAPTURE_EVEN</constant> flags to capture only the
+odd or even field, respectively, were replaced by
+<constant>V4L2_FIELD_TOP</constant> and
+<constant>V4L2_FIELD_BOTTOM</constant> in the field named
+<structfield>field</structfield> of &v4l2-pix-format; and
+&v4l2-window;. These structures are used to select a capture or
+overlay format with the &VIDIOC-S-FMT; ioctl.</para>
+ </section>
+
+ <section>
+ <title>Reading Images, Memory Mapping</title>
+
+ <section>
+ <title>Capturing using the read method</title>
+
+ <para>There is no essential difference between reading images
+from a V4L or V4L2 device using the &func-read; function, however V4L2
+drivers are not required to support this I/O method. Applications can
+determine if the function is available with the &VIDIOC-QUERYCAP;
+ioctl. All V4L2 devices exchanging data with applications must support
+the &func-select; and &func-poll; functions.</para>
+
+ <para>To select an image format and size, V4L provides the
+<constant>VIDIOCSPICT</constant> and <constant>VIDIOCSWIN</constant>
+ioctls. V4L2 uses the general-purpose data format negotiation ioctls
+&VIDIOC-G-FMT; and &VIDIOC-S-FMT;. They take a pointer to a
+&v4l2-format; as argument, here the &v4l2-pix-format; named
+<structfield>pix</structfield> of its <structfield>fmt</structfield>
+union is used.</para>
+
+ <para>For more information about the V4L2 read interface see
+<xref linkend="rw" />.</para>
+ </section>
+ <section>
+ <title>Capturing using memory mapping</title>
+
+ <para>Applications can read from V4L devices by mapping
+buffers in device memory, or more often just buffers allocated in
+DMA-able system memory, into their address space. This avoids the data
+copying overhead of the read method. V4L2 supports memory mapping as
+well, with a few differences.</para>
+
+ <informaltable>
+ <tgroup cols="2">
+ <thead>
+ <row>
+ <entry>V4L</entry>
+ <entry>V4L2</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry></entry>
+ <entry>The image format must be selected before
+buffers are allocated, with the &VIDIOC-S-FMT; ioctl. When no format
+is selected the driver may use the last, possibly by another
+application requested format.</entry>
+ </row>
+ <row>
+ <entry><para>Applications cannot change the number of
+buffers. The it is built into the driver, unless it has a module
+option to change the number when the driver module is
+loaded.</para></entry>
+ <entry><para>The &VIDIOC-REQBUFS; ioctl allocates the
+desired number of buffers, this is a required step in the initialization
+sequence.</para></entry>
+ </row>
+ <row>
+ <entry><para>Drivers map all buffers as one contiguous
+range of memory. The <constant>VIDIOCGMBUF</constant> ioctl is
+available to query the number of buffers, the offset of each buffer
+from the start of the virtual file, and the overall amount of memory
+used, which can be used as arguments for the &func-mmap;
+function.</para></entry>
+ <entry><para>Buffers are individually mapped. The
+offset and size of each buffer can be determined with the
+&VIDIOC-QUERYBUF; ioctl.</para></entry>
+ </row>
+ <row>
+ <entry><para>The <constant>VIDIOCMCAPTURE</constant>
+ioctl prepares a buffer for capturing. It also determines the image
+format for this buffer. The ioctl returns immediately, eventually with
+an &EAGAIN; if no video signal had been detected. When the driver
+supports more than one buffer applications can call the ioctl multiple
+times and thus have multiple outstanding capture
+requests.</para><para>The <constant>VIDIOCSYNC</constant> ioctl
+suspends execution until a particular buffer has been
+filled.</para></entry>
+ <entry><para>Drivers maintain an incoming and outgoing
+queue. &VIDIOC-QBUF; enqueues any empty buffer into the incoming
+queue. Filled buffers are dequeued from the outgoing queue with the
+&VIDIOC-DQBUF; ioctl. To wait until filled buffers become available this
+function, &func-select; or &func-poll; can be used. The
+&VIDIOC-STREAMON; ioctl must be called once after enqueuing one or
+more buffers to start capturing. Its counterpart
+&VIDIOC-STREAMOFF; stops capturing and dequeues all buffers from both
+queues. Applications can query the signal status, if known, with the
+&VIDIOC-ENUMINPUT; ioctl.</para></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable>
+
+ <para>For a more in-depth discussion of memory mapping and
+examples, see <xref linkend="mmap" />.</para>
+ </section>
+ </section>
+
+ <section>
+ <title>Reading Raw VBI Data</title>
+
+ <para>Originally the V4L API did not specify a raw VBI capture
+interface, only the device file <filename>/dev/vbi</filename> was
+reserved for this purpose. The only driver supporting this interface
+was the BTTV driver, de-facto defining the V4L VBI interface. Reading
+from the device yields a raw VBI image with the following
+parameters:<informaltable>
+ <tgroup cols="2">
+ <thead>
+ <row>
+ <entry>&v4l2-vbi-format;</entry>
+ <entry>V4L, BTTV driver</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry>sampling_rate</entry>
+ <entry>28636363 Hz NTSC (or any other 525-line
+standard); 35468950 Hz PAL and SECAM (625-line standards)</entry>
+ </row>
+ <row>
+ <entry>offset</entry>
+ <entry>?</entry>
+ </row>
+ <row>
+ <entry>samples_per_line</entry>
+ <entry>2048</entry>
+ </row>
+ <row>
+ <entry>sample_format</entry>
+ <entry>V4L2_PIX_FMT_GREY. The last four bytes (a
+machine endianess integer) contain a frame counter.</entry>
+ </row>
+ <row>
+ <entry>start[]</entry>
+ <entry>10, 273 NTSC; 22, 335 PAL and SECAM</entry>
+ </row>
+ <row>
+ <entry>count[]</entry>
+ <entry><para>16, 16<footnote><para>Old driver
+versions used different values, eventually the custom
+<constant>BTTV_VBISIZE</constant> ioctl was added to query the
+correct values.</para></footnote></para></entry>
+ </row>
+ <row>
+ <entry>flags</entry>
+ <entry>0</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable></para>
+
+ <para>Undocumented in the V4L specification, in Linux 2.3 the
+<constant>VIDIOCGVBIFMT</constant> and
+<constant>VIDIOCSVBIFMT</constant> ioctls using struct
+<structname>vbi_format</structname> were added to determine the VBI
+image parameters. These ioctls are only partially compatible with the
+V4L2 VBI interface specified in <xref linkend="raw-vbi" />.</para>
+
+ <para>An <structfield>offset</structfield> field does not
+exist, <structfield>sample_format</structfield> is supposed to be
+<constant>VIDEO_PALETTE_RAW</constant>, equivalent to
+<constant>V4L2_PIX_FMT_GREY</constant>. The remaining fields are
+probably equivalent to &v4l2-vbi-format;.</para>
+
+ <para>Apparently only the Zoran (ZR 36120) driver implements
+these ioctls. The semantics differ from those specified for V4L2 in two
+ways. The parameters are reset on &func-open; and
+<constant>VIDIOCSVBIFMT</constant> always returns an &EINVAL; if the
+parameters are invalid.</para>
+ </section>
+
+ <section>
+ <title>Miscellaneous</title>
+
+ <para>V4L2 has no equivalent of the
+<constant>VIDIOCGUNIT</constant> ioctl. Applications can find the VBI
+device associated with a video capture device (or vice versa) by
+reopening the device and requesting VBI data. For details see
+<xref linkend="open" />.</para>
+
+ <para>No replacement exists for <constant>VIDIOCKEY</constant>,
+and the V4L functions for microcode programming. A new interface for
+MPEG compression and playback devices is documented in <xref
+ linkend="extended-controls" />.</para>
+ </section>
+
+ </section>
+
+ <section id="hist-v4l2">
+ <title>Changes of the V4L2 API</title>
+
+ <para>Soon after the V4L API was added to the kernel it was
+criticised as too inflexible. In August 1998 Bill Dirks proposed a
+number of improvements and began to work on documentation, example
+drivers and applications. With the help of other volunteers this
+eventually became the V4L2 API, not just an extension but a
+replacement for the V4L API. However it took another four years and
+two stable kernel releases until the new API was finally accepted for
+inclusion into the kernel in its present form.</para>
+
+ <section>
+ <title>Early Versions</title>
+ <para>1998-08-20: First version.</para>
+
+ <para>1998-08-27: The &func-select; function was introduced.</para>
+
+ <para>1998-09-10: New video standard interface.</para>
+
+ <para>1998-09-18: The <constant>VIDIOC_NONCAP</constant> ioctl
+was replaced by the otherwise meaningless <constant>O_TRUNC</constant>
+&func-open; flag, and the aliases <constant>O_NONCAP</constant> and
+<constant>O_NOIO</constant> were defined. Applications can set this
+flag if they intend to access controls only, as opposed to capture
+applications which need exclusive access. The
+<constant>VIDEO_STD_XXX</constant> identifiers are now ordinals
+instead of flags, and the <function>video_std_construct()</function>
+helper function takes id and transmission arguments.</para>
+
+ <para>1998-09-28: Revamped video standard. Made video controls
+individually enumerable.</para>
+
+ <para>1998-10-02: The <structfield>id</structfield> field was
+removed from struct <structname>video_standard</structname> and the
+color subcarrier fields were renamed. The &VIDIOC-QUERYSTD; ioctl was
+renamed to &VIDIOC-ENUMSTD;, &VIDIOC-G-INPUT; to &VIDIOC-ENUMINPUT;. A
+first draft of the Codec API was released.</para>
+
+ <para>1998-11-08: Many minor changes. Most symbols have been
+renamed. Some material changes to &v4l2-capability;.</para>
+
+ <para>1998-11-12: The read/write directon of some ioctls was misdefined.</para>
+
+ <para>1998-11-14: <constant>V4L2_PIX_FMT_RGB24</constant>
+changed to <constant>V4L2_PIX_FMT_BGR24</constant>, and
+<constant>V4L2_PIX_FMT_RGB32</constant> changed to
+<constant>V4L2_PIX_FMT_BGR32</constant>. Audio controls are now
+accessible with the &VIDIOC-G-CTRL; and &VIDIOC-S-CTRL; ioctls under
+names starting with <constant>V4L2_CID_AUDIO</constant>. The
+<constant>V4L2_MAJOR</constant> define was removed from
+<filename>videodev.h</filename> since it was only used once in the
+<filename>videodev</filename> kernel module. The
+<constant>YUV422</constant> and <constant>YUV411</constant> planar
+image formats were added.</para>
+
+ <para>1998-11-28: A few ioctl symbols changed. Interfaces for codecs and
+video output devices were added.</para>
+
+ <para>1999-01-14: A raw VBI capture interface was added.</para>
+
+ <para>1999-01-19: The <constant>VIDIOC_NEXTBUF</constant> ioctl
+ was removed.</para>
+ </section>
+
+ <section>
+ <title>V4L2 Version 0.16 1999-01-31</title>
+ <para>1999-01-27: There is now one QBUF ioctl, VIDIOC_QWBUF and VIDIOC_QRBUF
+are gone. VIDIOC_QBUF takes a v4l2_buffer as a parameter. Added
+digital zoom (cropping) controls.</para>
+ </section>
+
+ <!-- Where's 0.17? mhs couldn't find that videodev.h, perhaps Bill
+ forgot to bump the version number or never released it. -->
+
+ <section>
+ <title>V4L2 Version 0.18 1999-03-16</title>
+ <para>Added a v4l to V4L2 ioctl compatibility layer to
+videodev.c. Driver writers, this changes how you implement your ioctl
+handler. See the Driver Writer's Guide. Added some more control id
+codes.</para>
+ </section>
+
+ <section>
+ <title>V4L2 Version 0.19 1999-06-05</title>
+ <para>1999-03-18: Fill in the category and catname fields of
+v4l2_queryctrl objects before passing them to the driver. Required a
+minor change to the VIDIOC_QUERYCTRL handlers in the sample
+drivers.</para>
+ <para>1999-03-31: Better compatibility for v4l memory capture
+ioctls. Requires changes to drivers to fully support new compatibility
+features, see Driver Writer's Guide and v4l2cap.c. Added new control
+IDs: V4L2_CID_HFLIP, _VFLIP. Changed V4L2_PIX_FMT_YUV422P to _YUV422P,
+and _YUV411P to _YUV411P.</para>
+ <para>1999-04-04: Added a few more control IDs.</para>
+ <para>1999-04-07: Added the button control type.</para>
+ <para>1999-05-02: Fixed a typo in videodev.h, and added the
+V4L2_CTRL_FLAG_GRAYED (later V4L2_CTRL_FLAG_GRABBED) flag.</para>
+ <para>1999-05-20: Definition of VIDIOC_G_CTRL was wrong causing
+a malfunction of this ioctl.</para>
+ <para>1999-06-05: Changed the value of
+V4L2_CID_WHITENESS.</para>
+ </section>
+
+ <section>
+ <title>V4L2 Version 0.20 (1999-09-10)</title>
+
+ <para>Version 0.20 introduced a number of changes which were
+<emphasis>not backward compatible</emphasis> with 0.19 and earlier
+versions. Purpose of these changes was to simplify the API, while
+making it more extensible and following common Linux driver API
+conventions.</para>
+
+ <orderedlist>
+ <listitem>
+ <para>Some typos in <constant>V4L2_FMT_FLAG</constant>
+symbols were fixed. &v4l2-clip; was changed for compatibility with
+v4l. (1999-08-30)</para>
+ </listitem>
+
+ <listitem>
+ <para><constant>V4L2_TUNER_SUB_LANG1</constant> was added.
+(1999-09-05)</para>
+ </listitem>
+
+ <listitem>
+ <para>All ioctl() commands that used an integer argument now
+take a pointer to an integer. Where it makes sense, ioctls will return
+the actual new value in the integer pointed to by the argument, a
+common convention in the V4L2 API. The affected ioctls are:
+VIDIOC_PREVIEW, VIDIOC_STREAMON, VIDIOC_STREAMOFF, VIDIOC_S_FREQ,
+VIDIOC_S_INPUT, VIDIOC_S_OUTPUT, VIDIOC_S_EFFECT. For example
+<programlisting>
+err = ioctl (fd, VIDIOC_XXX, V4L2_XXX);
+</programlisting> becomes <programlisting>
+int a = V4L2_XXX; err = ioctl(fd, VIDIOC_XXX, &a);
+</programlisting>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>All the different get- and set-format commands were
+swept into one &VIDIOC-G-FMT; and &VIDIOC-S-FMT; ioctl taking a union
+and a type field selecting the union member as parameter. Purpose is to
+simplify the API by eliminating several ioctls and to allow new and
+driver private data streams without adding new ioctls.</para>
+
+ <para>This change obsoletes the following ioctls:
+<constant>VIDIOC_S_INFMT</constant>,
+<constant>VIDIOC_G_INFMT</constant>,
+<constant>VIDIOC_S_OUTFMT</constant>,
+<constant>VIDIOC_G_OUTFMT</constant>,
+<constant>VIDIOC_S_VBIFMT</constant> and
+<constant>VIDIOC_G_VBIFMT</constant>. The image format structure
+<structname>v4l2_format</structname> was renamed to &v4l2-pix-format;,
+while &v4l2-format; is now the envelopping structure for all format
+negotiations.</para>
+ </listitem>
+
+ <listitem>
+ <para>Similar to the changes above, the
+<constant>VIDIOC_G_PARM</constant> and
+<constant>VIDIOC_S_PARM</constant> ioctls were merged with
+<constant>VIDIOC_G_OUTPARM</constant> and
+<constant>VIDIOC_S_OUTPARM</constant>. A
+<structfield>type</structfield> field in the new &v4l2-streamparm;
+selects the respective union member.</para>
+
+ <para>This change obsoletes the
+<constant>VIDIOC_G_OUTPARM</constant> and
+<constant>VIDIOC_S_OUTPARM</constant> ioctls.</para>
+ </listitem>
+
+ <listitem>
+ <para>Control enumeration was simplified, and two new
+control flags were introduced and one dropped. The
+<structfield>catname</structfield> field was replaced by a
+<structfield>group</structfield> field.</para>
+
+ <para>Drivers can now flag unsupported and temporarily
+unavailable controls with <constant>V4L2_CTRL_FLAG_DISABLED</constant>
+and <constant>V4L2_CTRL_FLAG_GRABBED</constant> respectively. The
+<structfield>group</structfield> name indicates a possibly narrower
+classification than the <structfield>category</structfield>. In other
+words, there may be multiple groups within a category. Controls within
+a group would typically be drawn within a group box. Controls in
+different categories might have a greater separation, or may even
+appear in separate windows.</para>
+ </listitem>
+
+ <listitem>
+ <para>The &v4l2-buffer; <structfield>timestamp</structfield>
+was changed to a 64 bit integer, containing the sampling or output
+time of the frame in nanoseconds. Additionally timestamps will be in
+absolute system time, not starting from zero at the beginning of a
+stream. The data type name for timestamps is stamp_t, defined as a
+signed 64-bit integer. Output devices should not send a buffer out
+until the time in the timestamp field has arrived. I would like to
+follow SGI's lead, and adopt a multimedia timestamping system like
+their UST (Unadjusted System Time). See
+http://web.archive.org/web/*/http://reality.sgi.com
+/cpirazzi_engr/lg/time/intro.html.
+UST uses timestamps that are 64-bit signed integers
+(not struct timeval's) and given in nanosecond units. The UST clock
+starts at zero when the system is booted and runs continuously and
+uniformly. It takes a little over 292 years for UST to overflow. There
+is no way to set the UST clock. The regular Linux time-of-day clock
+can be changed periodically, which would cause errors if it were being
+used for timestamping a multimedia stream. A real UST style clock will
+require some support in the kernel that is not there yet. But in
+anticipation, I will change the timestamp field to a 64-bit integer,
+and I will change the v4l2_masterclock_gettime() function (used only
+by drivers) to return a 64-bit integer.</para>
+ </listitem>
+
+ <listitem>
+ <para>A <structfield>sequence</structfield> field was added
+to &v4l2-buffer;. The <structfield>sequence</structfield> field counts
+captured frames, it is ignored by output devices. When a capture
+driver drops a frame, the sequence number of that frame is
+skipped.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 Version 0.20 incremental changes</title>
+ <!-- Version number didn't change anymore, reason unknown. -->
+
+ <para>1999-12-23: In &v4l2-vbi-format; the
+<structfield>reserved1</structfield> field became
+<structfield>offset</structfield>. Previously drivers were required to
+clear the <structfield>reserved1</structfield> field.</para>
+
+ <para>2000-01-13: The
+ <constant>V4L2_FMT_FLAG_NOT_INTERLACED</constant> flag was added.</para>
+
+ <para>2000-07-31: The <filename>linux/poll.h</filename> header
+is now included by <filename>videodev.h</filename> for compatibility
+with the original <filename>videodev.h</filename> file.</para>
+
+ <para>2000-11-20: <constant>V4L2_TYPE_VBI_OUTPUT</constant> and
+<constant>V4L2_PIX_FMT_Y41P</constant> were added.</para>
+
+ <para>2000-11-25: <constant>V4L2_TYPE_VBI_INPUT</constant> was
+added.</para>
+
+ <para>2000-12-04: A couple typos in symbol names were fixed.</para>
+
+ <para>2001-01-18: To avoid namespace conflicts the
+<constant>fourcc</constant> macro defined in the
+<filename>videodev.h</filename> header file was renamed to
+<constant>v4l2_fourcc</constant>.</para>
+
+ <para>2001-01-25: A possible driver-level compatibility problem
+between the <filename>videodev.h</filename> file in Linux 2.4.0 and
+the <filename>videodev.h</filename> file included in the
+<filename>videodevX</filename> patch was fixed. Users of an earlier
+version of <filename>videodevX</filename> on Linux 2.4.0 should
+recompile their V4L and V4L2 drivers.</para>
+
+ <para>2001-01-26: A possible kernel-level incompatibility
+between the <filename>videodev.h</filename> file in the
+<filename>videodevX</filename> patch and the
+<filename>videodev.h</filename> file in Linux 2.2.x with devfs patches
+applied was fixed.</para>
+
+ <para>2001-03-02: Certain V4L ioctls which pass data in both
+direction although they are defined with read-only parameter, did not
+work correctly through the backward compatibility layer.
+[Solution?]</para>
+
+ <para>2001-04-13: Big endian 16-bit RGB formats were added.</para>
+
+ <para>2001-09-17: New YUV formats and the &VIDIOC-G-FREQUENCY; and
+&VIDIOC-S-FREQUENCY; ioctls were added. (The old
+<constant>VIDIOC_G_FREQ</constant> and
+<constant>VIDIOC_S_FREQ</constant> ioctls did not take multiple tuners
+into account.)</para>
+
+ <para>2000-09-18: <constant>V4L2_BUF_TYPE_VBI</constant> was
+added. This may <emphasis>break compatibility</emphasis> as the
+&VIDIOC-G-FMT; and &VIDIOC-S-FMT; ioctls may fail now if the struct
+<structname>v4l2_fmt</structname> <structfield>type</structfield>
+field does not contain <constant>V4L2_BUF_TYPE_VBI</constant>. In the
+documentation of the &v4l2-vbi-format;
+<structfield>offset</structfield> field the ambiguous phrase "rising
+edge" was changed to "leading edge".</para>
+ </section>
+
+ <section>
+ <title>V4L2 Version 0.20 2000-11-23</title>
+
+ <para>A number of changes were made to the raw VBI
+interface.</para>
+
+ <orderedlist>
+ <listitem>
+ <para>Figures clarifying the line numbering scheme were
+added to the V4L2 API specification. The
+<structfield>start</structfield>[0] and
+<structfield>start</structfield>[1] fields no longer count line
+numbers beginning at zero. Rationale: a) The previous definition was
+unclear. b) The <structfield>start</structfield>[] values are ordinal
+numbers. c) There is no point in inventing a new line numbering
+scheme. We now use line number as defined by ITU-R, period.
+Compatibility: Add one to the start values. Applications depending on
+the previous semantics may not function correctly.</para>
+ </listitem>
+
+ <listitem>
+ <para>The restriction "count[0] > 0 and count[1] > 0"
+has been relaxed to "(count[0] + count[1]) > 0". Rationale:
+Drivers may allocate resources at scan line granularity and some data
+services are transmitted only on the first field. The comment that
+both <structfield>count</structfield> values will usually be equal is
+misleading and pointless and has been removed. This change
+<emphasis>breaks compatibility</emphasis> with earlier versions:
+Drivers may return EINVAL, applications may not function
+correctly.</para>
+ </listitem>
+
+ <listitem>
+ <para>Drivers are again permitted to return negative
+(unknown) start values as proposed earlier. Why this feature was
+dropped is unclear. This change may <emphasis>break
+compatibility</emphasis> with applications depending on the start
+values being positive. The use of <constant>EBUSY</constant> and
+<constant>EINVAL</constant> error codes with the &VIDIOC-S-FMT; ioctl
+was clarified. The &EBUSY; was finally documented, and the
+<structfield>reserved2</structfield> field which was previously
+mentioned only in the <filename>videodev.h</filename> header
+file.</para>
+ </listitem>
+
+ <listitem>
+ <para>New buffer types
+<constant>V4L2_TYPE_VBI_INPUT</constant> and
+<constant>V4L2_TYPE_VBI_OUTPUT</constant> were added. The former is an
+alias for the old <constant>V4L2_TYPE_VBI</constant>, the latter was
+missing in the <filename>videodev.h</filename> file.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 Version 0.20 2002-07-25</title>
+ <para>Added sliced VBI interface proposal.</para>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.5.46, 2002-10</title>
+
+ <para>Around October-November 2002, prior to an announced
+feature freeze of Linux 2.5, the API was revised, drawing from
+experience with V4L2 0.20. This unnamed version was finally merged
+into Linux 2.5.46.</para>
+
+ <orderedlist>
+ <listitem>
+ <para>As specified in <xref linkend="related" />, drivers
+must make related device functions available under all minor device
+numbers.</para>
+ </listitem>
+
+ <listitem>
+ <para>The &func-open; function requires access mode
+<constant>O_RDWR</constant> regardless of the device type. All V4L2
+drivers exchanging data with applications must support the
+<constant>O_NONBLOCK</constant> flag. The <constant>O_NOIO</constant>
+flag, a V4L2 symbol which aliased the meaningless
+<constant>O_TRUNC</constant> to indicate accesses without data
+exchange (panel applications) was dropped. Drivers must stay in "panel
+mode" until the application attempts to initiate a data exchange, see
+<xref linkend="open" />.</para>
+ </listitem>
+
+ <listitem>
+ <para>The &v4l2-capability; changed dramatically. Note that
+also the size of the structure changed, which is encoded in the ioctl
+request code, thus older V4L2 devices will respond with an &EINVAL; to
+the new &VIDIOC-QUERYCAP; ioctl.</para>
+
+ <para>There are new fields to identify the driver, a new RDS
+device function <constant>V4L2_CAP_RDS_CAPTURE</constant>, the
+<constant>V4L2_CAP_AUDIO</constant> flag indicates if the device has
+any audio connectors, another I/O capability
+<constant>V4L2_CAP_ASYNCIO</constant> can be flagged. In response to
+these changes the <structfield>type</structfield> field became a bit
+set and was merged into the <structfield>flags</structfield> field.
+<constant>V4L2_FLAG_TUNER</constant> was renamed to
+<constant>V4L2_CAP_TUNER</constant>,
+<constant>V4L2_CAP_VIDEO_OVERLAY</constant> replaced
+<constant>V4L2_FLAG_PREVIEW</constant> and
+<constant>V4L2_CAP_VBI_CAPTURE</constant> and
+<constant>V4L2_CAP_VBI_OUTPUT</constant> replaced
+<constant>V4L2_FLAG_DATA_SERVICE</constant>.
+<constant>V4L2_FLAG_READ</constant> and
+<constant>V4L2_FLAG_WRITE</constant> were merged into
+<constant>V4L2_CAP_READWRITE</constant>.</para>
+
+ <para>The redundant fields
+<structfield>inputs</structfield>, <structfield>outputs</structfield>
+and <structfield>audios</structfield> were removed. These properties
+can be determined as described in <xref linkend="video" /> and <xref
+linkend="audio" />.</para>
+
+ <para>The somewhat volatile and therefore barely useful
+fields <structfield>maxwidth</structfield>,
+<structfield>maxheight</structfield>,
+<structfield>minwidth</structfield>,
+<structfield>minheight</structfield>,
+<structfield>maxframerate</structfield> were removed. This information
+is available as described in <xref linkend="format" /> and
+<xref linkend="standard" />.</para>
+
+ <para><constant>V4L2_FLAG_SELECT</constant> was removed. We
+believe the select() function is important enough to require support
+of it in all V4L2 drivers exchanging data with applications. The
+redundant <constant>V4L2_FLAG_MONOCHROME</constant> flag was removed,
+this information is available as described in <xref
+ linkend="format" />.</para>
+ </listitem>
+
+ <listitem>
+ <para>In &v4l2-input; the
+<structfield>assoc_audio</structfield> field and the
+<structfield>capability</structfield> field and its only flag
+<constant>V4L2_INPUT_CAP_AUDIO</constant> was replaced by the new
+<structfield>audioset</structfield> field. Instead of linking one
+video input to one audio input this field reports all audio inputs
+this video input combines with.</para>
+
+ <para>New fields are <structfield>tuner</structfield>
+(reversing the former link from tuners to video inputs),
+<structfield>std</structfield> and
+<structfield>status</structfield>.</para>
+
+ <para>Accordingly &v4l2-output; lost its
+<structfield>capability</structfield> and
+<structfield>assoc_audio</structfield> fields.
+<structfield>audioset</structfield>,
+<structfield>modulator</structfield> and
+<structfield>std</structfield> where added instead.</para>
+ </listitem>
+
+ <listitem>
+ <para>The &v4l2-audio; field
+<structfield>audio</structfield> was renamed to
+<structfield>index</structfield>, for consistency with other
+structures. A new capability flag
+<constant>V4L2_AUDCAP_STEREO</constant> was added to indicated if the
+audio input in question supports stereo sound.
+<constant>V4L2_AUDCAP_EFFECTS</constant> and the corresponding
+<constant>V4L2_AUDMODE</constant> flags where removed. This can be
+easily implemented using controls. (However the same applies to AVL
+which is still there.)</para>
+
+ <para>Again for consistency the &v4l2-audioout; field
+<structfield>audio</structfield> was renamed to
+<structfield>index</structfield>.</para>
+ </listitem>
+
+ <listitem>
+ <para>The &v4l2-tuner;
+<structfield>input</structfield> field was replaced by an
+<structfield>index</structfield> field, permitting devices with
+multiple tuners. The link between video inputs and tuners is now
+reversed, inputs point to their tuner. The
+<structfield>std</structfield> substructure became a
+simple set (more about this below) and moved into &v4l2-input;. A
+<structfield>type</structfield> field was added.</para>
+
+ <para>Accordingly in &v4l2-modulator; the
+<structfield>output</structfield> was replaced by an
+<structfield>index</structfield> field.</para>
+
+ <para>In &v4l2-frequency; the
+<structfield>port</structfield> field was replaced by a
+<structfield>tuner</structfield> field containing the respective tuner
+or modulator index number. A tuner <structfield>type</structfield>
+field was added and the <structfield>reserved</structfield> field
+became larger for future extensions (satellite tuners in
+particular).</para>
+ </listitem>
+
+ <listitem>
+ <para>The idea of completely transparent video standards was
+dropped. Experience showed that applications must be able to work with
+video standards beyond presenting the user a menu. Instead of
+enumerating supported standards with an ioctl applications can now
+refer to standards by &v4l2-std-id; and symbols defined in the
+<filename>videodev2.h</filename> header file. For details see <xref
+ linkend="standard" />. The &VIDIOC-G-STD; and
+&VIDIOC-S-STD; now take a pointer to this type as argument.
+&VIDIOC-QUERYSTD; was added to autodetect the received standard, if
+the hardware has this capability. In &v4l2-standard; an
+<structfield>index</structfield> field was added for &VIDIOC-ENUMSTD;.
+A &v4l2-std-id; field named <structfield>id</structfield> was added as
+machine readable identifier, also replacing the
+<structfield>transmission</structfield> field. The misleading
+<structfield>framerate</structfield> field was renamed
+to <structfield>frameperiod</structfield>. The now obsolete
+<structfield>colorstandard</structfield> information, originally
+needed to distguish between variations of standards, were
+removed.</para>
+
+ <para>Struct <structname>v4l2_enumstd</structname> ceased to
+be. &VIDIOC-ENUMSTD; now takes a pointer to a &v4l2-standard;
+directly. The information which standards are supported by a
+particular video input or output moved into &v4l2-input; and
+&v4l2-output; fields named <structfield>std</structfield>,
+respectively.</para>
+ </listitem>
+
+ <listitem>
+ <para>The &v4l2-queryctrl; fields
+<structfield>category</structfield> and
+<structfield>group</structfield> did not catch on and/or were not
+implemented as expected and therefore removed.</para>
+ </listitem>
+
+ <listitem>
+ <para>The &VIDIOC-TRY-FMT; ioctl was added to negotiate data
+formats as with &VIDIOC-S-FMT;, but without the overhead of
+programming the hardware and regardless of I/O in progress.</para>
+
+ <para>In &v4l2-format; the <structfield>fmt</structfield>
+union was extended to contain &v4l2-window;. All image format
+negotiations are now possible with <constant>VIDIOC_G_FMT</constant>,
+<constant>VIDIOC_S_FMT</constant> and
+<constant>VIDIOC_TRY_FMT</constant>; ioctl. The
+<constant>VIDIOC_G_WIN</constant> and
+<constant>VIDIOC_S_WIN</constant> ioctls to prepare for a video
+overlay were removed. The <structfield>type</structfield> field
+changed to type &v4l2-buf-type; and the buffer type names changed as
+follows.<informaltable>
+ <tgroup cols="2">
+ <thead>
+ <row>
+ <entry>Old defines</entry>
+ <entry>&v4l2-buf-type;</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_CAPTURE</constant></entry>
+ <entry><constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant></entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_CODECIN</constant></entry>
+ <entry>Omitted for now</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_CODECOUT</constant></entry>
+ <entry>Omitted for now</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_EFFECTSIN</constant></entry>
+ <entry>Omitted for now</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_EFFECTSIN2</constant></entry>
+ <entry>Omitted for now</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_EFFECTSOUT</constant></entry>
+ <entry>Omitted for now</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_VIDEOOUT</constant></entry>
+ <entry><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant></entry>
+ </row>
+ <row>
+ <entry><constant>-</constant></entry>
+ <entry><constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant></entry>
+ </row>
+ <row>
+ <entry><constant>-</constant></entry>
+ <entry><constant>V4L2_BUF_TYPE_VBI_CAPTURE</constant></entry>
+ </row>
+ <row>
+ <entry><constant>-</constant></entry>
+ <entry><constant>V4L2_BUF_TYPE_VBI_OUTPUT</constant></entry>
+ </row>
+ <row>
+ <entry><constant>-</constant></entry>
+ <entry><constant>V4L2_BUF_TYPE_SLICED_VBI_CAPTURE</constant></entry>
+ </row>
+ <row>
+ <entry><constant>-</constant></entry>
+ <entry><constant>V4L2_BUF_TYPE_SLICED_VBI_OUTPUT</constant></entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_PRIVATE_BASE</constant></entry>
+ <entry><constant>V4L2_BUF_TYPE_PRIVATE</constant></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable></para>
+ </listitem>
+
+ <listitem>
+ <para>In &v4l2-fmtdesc; a &v4l2-buf-type; field named
+<structfield>type</structfield> was added as in &v4l2-format;. The
+<constant>VIDIOC_ENUM_FBUFFMT</constant> ioctl is no longer needed and
+was removed. These calls can be replaced by &VIDIOC-ENUM-FMT; with
+type <constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>.</para>
+ </listitem>
+
+ <listitem>
+ <para>In &v4l2-pix-format; the
+<structfield>depth</structfield> field was removed, assuming
+applications which recognize the format by its four-character-code
+already know the color depth, and others do not care about it. The
+same rationale lead to the removal of the
+<constant>V4L2_FMT_FLAG_COMPRESSED</constant> flag. The
+<constant>V4L2_FMT_FLAG_SWCONVECOMPRESSED</constant> flag was removed
+because drivers are not supposed to convert images in kernel space. A
+user library of conversion functions should be provided instead. The
+<constant>V4L2_FMT_FLAG_BYTESPERLINE</constant> flag was redundant.
+Applications can set the <structfield>bytesperline</structfield> field
+to zero to get a reasonable default. Since the remaining flags were
+replaced as well, the <structfield>flags</structfield> field itself
+was removed.</para>
+ <para>The interlace flags were replaced by a &v4l2-field;
+value in a newly added <structfield>field</structfield>
+field.<informaltable>
+ <tgroup cols="2">
+ <thead>
+ <row>
+ <entry>Old flag</entry>
+ <entry>&v4l2-field;</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_FMT_FLAG_NOT_INTERLACED</constant></entry>
+ <entry>?</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FMT_FLAG_INTERLACED</constant>
+= <constant>V4L2_FMT_FLAG_COMBINED</constant></entry>
+ <entry><constant>V4L2_FIELD_INTERLACED</constant></entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FMT_FLAG_TOPFIELD</constant>
+= <constant>V4L2_FMT_FLAG_ODDFIELD</constant></entry>
+ <entry><constant>V4L2_FIELD_TOP</constant></entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FMT_FLAG_BOTFIELD</constant>
+= <constant>V4L2_FMT_FLAG_EVENFIELD</constant></entry>
+ <entry><constant>V4L2_FIELD_BOTTOM</constant></entry>
+ </row>
+ <row>
+ <entry><constant>-</constant></entry>
+ <entry><constant>V4L2_FIELD_SEQ_TB</constant></entry>
+ </row>
+ <row>
+ <entry><constant>-</constant></entry>
+ <entry><constant>V4L2_FIELD_SEQ_BT</constant></entry>
+ </row>
+ <row>
+ <entry><constant>-</constant></entry>
+ <entry><constant>V4L2_FIELD_ALTERNATE</constant></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable></para>
+
+ <para>The color space flags were replaced by a
+&v4l2-colorspace; value in a newly added
+<structfield>colorspace</structfield> field, where one of
+<constant>V4L2_COLORSPACE_SMPTE170M</constant>,
+<constant>V4L2_COLORSPACE_BT878</constant>,
+<constant>V4L2_COLORSPACE_470_SYSTEM_M</constant> or
+<constant>V4L2_COLORSPACE_470_SYSTEM_BG</constant> replaces
+<constant>V4L2_FMT_CS_601YUV</constant>.</para>
+ </listitem>
+
+ <listitem>
+ <para>In &v4l2-requestbuffers; the
+<structfield>type</structfield> field was properly defined as
+&v4l2-buf-type;. Buffer types changed as mentioned above. A new
+<structfield>memory</structfield> field of type &v4l2-memory; was
+added to distinguish between I/O methods using buffers allocated
+by the driver or the application. See <xref linkend="io" /> for
+details.</para>
+ </listitem>
+
+ <listitem>
+ <para>In &v4l2-buffer; the <structfield>type</structfield>
+field was properly defined as &v4l2-buf-type;. Buffer types changed as
+mentioned above. A <structfield>field</structfield> field of type
+&v4l2-field; was added to indicate if a buffer contains a top or
+bottom field. The old field flags were removed. Since no unadjusted
+system time clock was added to the kernel as planned, the
+<structfield>timestamp</structfield> field changed back from type
+stamp_t, an unsigned 64 bit integer expressing the sample time in
+nanoseconds, to struct <structname>timeval</structname>. With the
+addition of a second memory mapping method the
+<structfield>offset</structfield> field moved into union
+<structfield>m</structfield>, and a new
+<structfield>memory</structfield> field of type &v4l2-memory; was
+added to distinguish between I/O methods. See <xref linkend="io" />
+for details.</para>
+
+ <para>The <constant>V4L2_BUF_REQ_CONTIG</constant>
+flag was used by the V4L compatibility layer, after changes to this
+code it was no longer needed. The
+<constant>V4L2_BUF_ATTR_DEVICEMEM</constant> flag would indicate if
+the buffer was indeed allocated in device memory rather than DMA-able
+system memory. It was barely useful and so was removed.</para>
+ </listitem>
+
+ <listitem>
+ <para>In &v4l2-framebuffer; the
+<structfield>base[3]</structfield> array anticipating double- and
+triple-buffering in off-screen video memory, however without defining
+a synchronization mechanism, was replaced by a single pointer. The
+<constant>V4L2_FBUF_CAP_SCALEUP</constant> and
+<constant>V4L2_FBUF_CAP_SCALEDOWN</constant> flags were removed.
+Applications can determine this capability more accurately using the
+new cropping and scaling interface. The
+<constant>V4L2_FBUF_CAP_CLIPPING</constant> flag was replaced by
+<constant>V4L2_FBUF_CAP_LIST_CLIPPING</constant> and
+<constant>V4L2_FBUF_CAP_BITMAP_CLIPPING</constant>.</para>
+ </listitem>
+
+ <listitem>
+ <para>In &v4l2-clip; the <structfield>x</structfield>,
+<structfield>y</structfield>, <structfield>width</structfield> and
+<structfield>height</structfield> field moved into a
+<structfield>c</structfield> substructure of type &v4l2-rect;. The
+<structfield>x</structfield> and <structfield>y</structfield> fields
+were renamed to <structfield>left</structfield> and
+<structfield>top</structfield>, &ie; offsets to a context dependent
+origin.</para>
+ </listitem>
+
+ <listitem>
+ <para>In &v4l2-window; the <structfield>x</structfield>,
+<structfield>y</structfield>, <structfield>width</structfield> and
+<structfield>height</structfield> field moved into a
+<structfield>w</structfield> substructure as above. A
+<structfield>field</structfield> field of type %v4l2-field; was added
+to distinguish between field and frame (interlaced) overlay.</para>
+ </listitem>
+
+ <listitem>
+ <para>The digital zoom interface, including struct
+<structname>v4l2_zoomcap</structname>, struct
+<structname>v4l2_zoom</structname>,
+<constant>V4L2_ZOOM_NONCAP</constant> and
+<constant>V4L2_ZOOM_WHILESTREAMING</constant> was replaced by a new
+cropping and scaling interface. The previously unused struct
+<structname>v4l2_cropcap</structname> and
+<structname>v4l2_crop</structname> where redefined for this purpose.
+See <xref linkend="crop" /> for details.</para>
+ </listitem>
+
+ <listitem>
+ <para>In &v4l2-vbi-format; the
+<structfield>SAMPLE_FORMAT</structfield> field now contains a
+four-character-code as used to identify video image formats and
+<constant>V4L2_PIX_FMT_GREY</constant> replaces the
+<constant>V4L2_VBI_SF_UBYTE</constant> define. The
+<structfield>reserved</structfield> field was extended.</para>
+ </listitem>
+
+ <listitem>
+ <para>In &v4l2-captureparm; the type of the
+<structfield>timeperframe</structfield> field changed from unsigned
+long to &v4l2-fract;. This allows the accurate expression of multiples
+of the NTSC-M frame rate 30000 / 1001. A new field
+<structfield>readbuffers</structfield> was added to control the driver
+behaviour in read I/O mode.</para>
+
+ <para>Similar changes were made to &v4l2-outputparm;.</para>
+ </listitem>
+
+ <listitem>
+ <para>The struct <structname>v4l2_performance</structname>
+and <constant>VIDIOC_G_PERF</constant> ioctl were dropped. Except when
+using the <link linkend="rw">read/write I/O method</link>, which is
+limited anyway, this information is already available to
+applications.</para>
+ </listitem>
+
+ <listitem>
+ <para>The example transformation from RGB to YCbCr color
+space in the old V4L2 documentation was inaccurate, this has been
+corrected in <xref linkend="pixfmt" />.<!-- 0.5670G should be
+0.587, and 127/112 != 255/224 --></para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 2003-06-19</title>
+
+ <orderedlist>
+ <listitem>
+ <para>A new capability flag
+<constant>V4L2_CAP_RADIO</constant> was added for radio devices. Prior
+to this change radio devices would identify solely by having exactly one
+tuner whose type field reads <constant>V4L2_TUNER_RADIO</constant>.</para>
+ </listitem>
+
+ <listitem>
+ <para>An optional driver access priority mechanism was
+added, see <xref linkend="app-pri" /> for details.</para>
+ </listitem>
+
+ <listitem>
+ <para>The audio input and output interface was found to be
+incomplete.</para>
+ <para>Previously the &VIDIOC-G-AUDIO;
+ioctl would enumerate the available audio inputs. An ioctl to
+determine the current audio input, if more than one combines with the
+current video input, did not exist. So
+<constant>VIDIOC_G_AUDIO</constant> was renamed to
+<constant>VIDIOC_G_AUDIO_OLD</constant>, this ioctl was removed on
+Kernel 2.6.39. The &VIDIOC-ENUMAUDIO; ioctl was added to enumerate
+audio inputs, while &VIDIOC-G-AUDIO; now reports the current audio
+input.</para>
+ <para>The same changes were made to &VIDIOC-G-AUDOUT; and
+&VIDIOC-ENUMAUDOUT;.</para>
+ <para>Until further the "videodev" module will automatically
+translate between the old and new ioctls, but drivers and applications
+must be updated to successfully compile again.</para>
+ </listitem>
+
+ <listitem>
+ <para>The &VIDIOC-OVERLAY; ioctl was incorrectly defined with
+write-read parameter. It was changed to write-only, while the write-read
+version was renamed to <constant>VIDIOC_OVERLAY_OLD</constant>. The old
+ioctl was removed on Kernel 2.6.39. Until further the "videodev"
+kernel module will automatically translate to the new version, so drivers
+must be recompiled, but not applications.</para>
+ </listitem>
+
+ <listitem>
+ <para><xref linkend="overlay" /> incorrectly stated that
+clipping rectangles define regions where the video can be seen.
+Correct is that clipping rectangles define regions where
+<emphasis>no</emphasis> video shall be displayed and so the graphics
+surface can be seen.</para>
+ </listitem>
+
+ <listitem>
+ <para>The &VIDIOC-S-PARM; and &VIDIOC-S-CTRL; ioctls were
+defined with write-only parameter, inconsistent with other ioctls
+modifying their argument. They were changed to write-read, while a
+<constant>_OLD</constant> suffix was added to the write-only versions.
+The old ioctls were removed on Kernel 2.6.39. Drivers and
+applications assuming a constant parameter need an update.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 2003-11-05</title>
+ <orderedlist>
+ <listitem>
+ <para>In <xref linkend="pixfmt-rgb" /> the following pixel
+formats were incorrectly transferred from Bill Dirks' V4L2
+specification. Descriptions below refer to bytes in memory, in
+ascending address order.<informaltable>
+ <tgroup cols="3">
+ <thead>
+ <row>
+ <entry>Symbol</entry>
+ <entry>In this document prior to revision
+0.5</entry>
+ <entry>Corrected</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_PIX_FMT_RGB24</constant></entry>
+ <entry>B, G, R</entry>
+ <entry>R, G, B</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_PIX_FMT_BGR24</constant></entry>
+ <entry>R, G, B</entry>
+ <entry>B, G, R</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_PIX_FMT_RGB32</constant></entry>
+ <entry>B, G, R, X</entry>
+ <entry>R, G, B, X</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_PIX_FMT_BGR32</constant></entry>
+ <entry>R, G, B, X</entry>
+ <entry>B, G, R, X</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable> The
+<constant>V4L2_PIX_FMT_BGR24</constant> example was always
+correct.</para>
+ <para>In <xref linkend="v4l-image-properties" /> the mapping
+of the V4L <constant>VIDEO_PALETTE_RGB24</constant> and
+<constant>VIDEO_PALETTE_RGB32</constant> formats to V4L2 pixel formats
+was accordingly corrected.</para>
+ </listitem>
+
+ <listitem>
+ <para>Unrelated to the fixes above, drivers may still
+interpret some V4L2 RGB pixel formats differently. These issues have
+yet to be addressed, for details see <xref
+ linkend="pixfmt-rgb" />.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.6, 2004-05-09</title>
+ <orderedlist>
+ <listitem>
+ <para>The &VIDIOC-CROPCAP; ioctl was incorrectly defined
+with read-only parameter. It is now defined as write-read ioctl, while
+the read-only version was renamed to
+<constant>VIDIOC_CROPCAP_OLD</constant>. The old ioctl was removed
+on Kernel 2.6.39.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.8</title>
+ <orderedlist>
+ <listitem>
+ <para>A new field <structfield>input</structfield> (former
+<structfield>reserved[0]</structfield>) was added to the &v4l2-buffer;
+structure. Purpose of this field is to alternate between video inputs
+(⪚ cameras) in step with the video capturing process. This function
+must be enabled with the new <constant>V4L2_BUF_FLAG_INPUT</constant>
+flag. The <structfield>flags</structfield> field is no longer
+read-only.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 spec erratum 2004-08-01</title>
+
+ <orderedlist>
+ <listitem>
+ <para>The return value of the
+<xref linkend="func-open" /> function was incorrectly documented.</para>
+ </listitem>
+
+ <listitem>
+ <para>Audio output ioctls end in -AUDOUT, not -AUDIOOUT.</para>
+ </listitem>
+
+ <listitem>
+ <para>In the Current Audio Input example the
+<constant>VIDIOC_G_AUDIO</constant> ioctl took the wrong
+argument.</para>
+ </listitem>
+
+ <listitem>
+ <para>The documentation of the &VIDIOC-QBUF; and
+&VIDIOC-DQBUF; ioctls did not mention the &v4l2-buffer;
+<structfield>memory</structfield> field. It was also missing from
+examples. Also on the <constant>VIDIOC_DQBUF</constant> page the &EIO;
+was not documented.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.14</title>
+ <orderedlist>
+ <listitem>
+ <para>A new sliced VBI interface was added. It is documented
+in <xref linkend="sliced" /> and replaces the interface first
+proposed in V4L2 specification 0.8.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.15</title>
+ <orderedlist>
+ <listitem>
+ <para>The &VIDIOC-LOG-STATUS; ioctl was added.</para>
+ </listitem>
+
+ <listitem>
+ <para>New video standards
+<constant>V4L2_STD_NTSC_443</constant>,
+<constant>V4L2_STD_SECAM_LC</constant>,
+<constant>V4L2_STD_SECAM_DK</constant> (a set of SECAM D, K and K1),
+and <constant>V4L2_STD_ATSC</constant> (a set of
+<constant>V4L2_STD_ATSC_8_VSB</constant> and
+<constant>V4L2_STD_ATSC_16_VSB</constant>) were defined. Note the
+<constant>V4L2_STD_525_60</constant> set now includes
+<constant>V4L2_STD_NTSC_443</constant>. See also <xref
+ linkend="v4l2-std-id" />.</para>
+ </listitem>
+
+ <listitem>
+ <para>The <constant>VIDIOC_G_COMP</constant> and
+<constant>VIDIOC_S_COMP</constant> ioctl were renamed to
+<constant>VIDIOC_G_MPEGCOMP</constant> and
+<constant>VIDIOC_S_MPEGCOMP</constant> respectively. Their argument
+was replaced by a struct
+<structname>v4l2_mpeg_compression</structname> pointer. (The
+<constant>VIDIOC_G_MPEGCOMP</constant> and
+<constant>VIDIOC_S_MPEGCOMP</constant> ioctls where removed in Linux
+2.6.25.)</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 spec erratum 2005-11-27</title>
+ <para>The capture example in <xref linkend="capture-example" />
+called the &VIDIOC-S-CROP; ioctl without checking if cropping is
+supported. In the video standard selection example in
+<xref linkend="standard" /> the &VIDIOC-S-STD; call used the wrong
+argument type.</para>
+ </section>
+
+ <section>
+ <title>V4L2 spec erratum 2006-01-10</title>
+ <orderedlist>
+ <listitem>
+ <para>The <constant>V4L2_IN_ST_COLOR_KILL</constant> flag in
+&v4l2-input; not only indicates if the color killer is enabled, but
+also if it is active. (The color killer disables color decoding when
+it detects no color in the video signal to improve the image
+quality.)</para>
+ </listitem>
+
+ <listitem>
+ <para>&VIDIOC-S-PARM; is a write-read ioctl, not write-only as
+stated on its reference page. The ioctl changed in 2003 as noted above.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 spec erratum 2006-02-03</title>
+ <orderedlist>
+ <listitem>
+ <para>In &v4l2-captureparm; and &v4l2-outputparm; the
+<structfield>timeperframe</structfield> field gives the time in
+seconds, not microseconds.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 spec erratum 2006-02-04</title>
+ <orderedlist>
+ <listitem>
+ <para>The <structfield>clips</structfield> field in
+&v4l2-window; must point to an array of &v4l2-clip;, not a linked
+list, because drivers ignore the struct
+<structname>v4l2_clip</structname>.<structfield>next</structfield>
+pointer.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.17</title>
+ <orderedlist>
+ <listitem>
+ <para>New video standard macros were added:
+<constant>V4L2_STD_NTSC_M_KR</constant> (NTSC M South Korea), and the
+sets <constant>V4L2_STD_MN</constant>,
+<constant>V4L2_STD_B</constant>, <constant>V4L2_STD_GH</constant> and
+<constant>V4L2_STD_DK</constant>. The
+<constant>V4L2_STD_NTSC</constant> and
+<constant>V4L2_STD_SECAM</constant> sets now include
+<constant>V4L2_STD_NTSC_M_KR</constant> and
+<constant>V4L2_STD_SECAM_LC</constant> respectively.</para>
+ </listitem>
+
+ <listitem>
+ <para>A new <constant>V4L2_TUNER_MODE_LANG1_LANG2</constant>
+was defined to record both languages of a bilingual program. The
+use of <constant>V4L2_TUNER_MODE_STEREO</constant> for this purpose
+is deprecated now. See the &VIDIOC-G-TUNER; section for
+details.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 spec erratum 2006-09-23 (Draft 0.15)</title>
+ <orderedlist>
+ <listitem>
+ <para>In various places
+<constant>V4L2_BUF_TYPE_SLICED_VBI_CAPTURE</constant> and
+<constant>V4L2_BUF_TYPE_SLICED_VBI_OUTPUT</constant> of the sliced VBI
+interface were not mentioned along with other buffer types.</para>
+ </listitem>
+
+ <listitem>
+ <para>In <xref linkend="vidioc-g-audio" /> it was clarified
+that the &v4l2-audio; <structfield>mode</structfield> field is a flags
+field.</para>
+ </listitem>
+
+ <listitem>
+ <para><xref linkend="vidioc-querycap" /> did not mention the
+sliced VBI and radio capability flags.</para>
+ </listitem>
+
+ <listitem>
+ <para>In <xref linkend="vidioc-g-frequency" /> it was
+clarified that applications must initialize the tuner
+<structfield>type</structfield> field of &v4l2-frequency; before
+calling &VIDIOC-S-FREQUENCY;.</para>
+ </listitem>
+
+ <listitem>
+ <para>The <structfield>reserved</structfield> array
+in &v4l2-requestbuffers; has 2 elements, not 32.</para>
+ </listitem>
+
+ <listitem>
+ <para>In <xref linkend="output" /> and <xref
+ linkend="raw-vbi" /> the device file names
+<filename>/dev/vout</filename> which never caught on were replaced
+by <filename>/dev/video</filename>.</para>
+ </listitem>
+
+ <listitem>
+ <para>With Linux 2.6.15 the possible range for VBI device minor
+numbers was extended from 224-239 to 224-255. Accordingly device file names
+<filename>/dev/vbi0</filename> to <filename>/dev/vbi31</filename> are
+possible now.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.18</title>
+ <orderedlist>
+ <listitem>
+ <para>New ioctls &VIDIOC-G-EXT-CTRLS;, &VIDIOC-S-EXT-CTRLS;
+and &VIDIOC-TRY-EXT-CTRLS; were added, a flag to skip unsupported
+controls with &VIDIOC-QUERYCTRL;, new control types
+<constant>V4L2_CTRL_TYPE_INTEGER64</constant> and
+<constant>V4L2_CTRL_TYPE_CTRL_CLASS</constant> (<xref
+ linkend="v4l2-ctrl-type" />), and new control flags
+<constant>V4L2_CTRL_FLAG_READ_ONLY</constant>,
+<constant>V4L2_CTRL_FLAG_UPDATE</constant>,
+<constant>V4L2_CTRL_FLAG_INACTIVE</constant> and
+<constant>V4L2_CTRL_FLAG_SLIDER</constant> (<xref
+ linkend="control-flags" />). See <xref
+ linkend="extended-controls" /> for details.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.19</title>
+ <orderedlist>
+ <listitem>
+ <para>In &v4l2-sliced-vbi-cap; a buffer type field was added
+replacing a reserved field. Note on architectures where the size of
+enum types differs from int types the size of the structure changed.
+The &VIDIOC-G-SLICED-VBI-CAP; ioctl was redefined from being read-only
+to write-read. Applications must initialize the type field and clear
+the reserved fields now. These changes may <emphasis>break the
+compatibility</emphasis> with older drivers and applications.</para>
+ </listitem>
+
+ <listitem>
+ <para>The ioctls &VIDIOC-ENUM-FRAMESIZES; and
+&VIDIOC-ENUM-FRAMEINTERVALS; were added.</para>
+ </listitem>
+
+ <listitem>
+ <para>A new pixel format <constant>V4L2_PIX_FMT_RGB444</constant> (<xref
+linkend="rgb-formats" />) was added.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 spec erratum 2006-10-12 (Draft 0.17)</title>
+ <orderedlist>
+ <listitem>
+ <para><constant>V4L2_PIX_FMT_HM12</constant> (<xref
+linkend="reserved-formats" />) is a YUV 4:2:0, not 4:2:2 format.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.21</title>
+ <orderedlist>
+ <listitem>
+ <para>The <filename>videodev2.h</filename> header file is
+now dual licensed under GNU General Public License version two or
+later, and under a 3-clause BSD-style license.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.22</title>
+ <orderedlist>
+ <listitem>
+ <para>Two new field orders
+ <constant>V4L2_FIELD_INTERLACED_TB</constant> and
+ <constant>V4L2_FIELD_INTERLACED_BT</constant> were
+ added. See <xref linkend="v4l2-field" /> for details.</para>
+ </listitem>
+
+ <listitem>
+ <para>Three new clipping/blending methods with a global or
+straight or inverted local alpha value were added to the video overlay
+interface. See the description of the &VIDIOC-G-FBUF; and
+&VIDIOC-S-FBUF; ioctls for details.</para>
+ <para>A new <structfield>global_alpha</structfield> field
+was added to <link
+linkend="v4l2-window"><structname>v4l2_window</structname></link>,
+extending the structure. This may <emphasis>break
+compatibility</emphasis> with applications using a struct
+<structname>v4l2_window</structname> directly. However the <link
+linkend="vidioc-g-fmt">VIDIOC_G/S/TRY_FMT</link> ioctls, which take a
+pointer to a <link linkend="v4l2-format">v4l2_format</link> parent
+structure with padding bytes at the end, are not affected.</para>
+ </listitem>
+
+ <listitem>
+ <para>The format of the <structfield>chromakey</structfield>
+field in &v4l2-window; changed from "host order RGB32" to a pixel
+value in the same format as the framebuffer. This may <emphasis>break
+compatibility</emphasis> with existing applications. Drivers
+supporting the "host order RGB32" format are not known.</para>
+ </listitem>
+
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.24</title>
+ <orderedlist>
+ <listitem>
+ <para>The pixel formats
+<constant>V4L2_PIX_FMT_PAL8</constant>,
+<constant>V4L2_PIX_FMT_YUV444</constant>,
+<constant>V4L2_PIX_FMT_YUV555</constant>,
+<constant>V4L2_PIX_FMT_YUV565</constant> and
+<constant>V4L2_PIX_FMT_YUV32</constant> were added.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.25</title>
+ <orderedlist>
+ <listitem>
+ <para>The pixel formats <link linkend="V4L2-PIX-FMT-Y16">
+<constant>V4L2_PIX_FMT_Y16</constant></link> and <link
+linkend="V4L2-PIX-FMT-SBGGR16">
+<constant>V4L2_PIX_FMT_SBGGR16</constant></link> were added.</para>
+ </listitem>
+ <listitem>
+ <para>New <link linkend="control">controls</link>
+<constant>V4L2_CID_POWER_LINE_FREQUENCY</constant>,
+<constant>V4L2_CID_HUE_AUTO</constant>,
+<constant>V4L2_CID_WHITE_BALANCE_TEMPERATURE</constant>,
+<constant>V4L2_CID_SHARPNESS</constant> and
+<constant>V4L2_CID_BACKLIGHT_COMPENSATION</constant> were added. The
+controls <constant>V4L2_CID_BLACK_LEVEL</constant>,
+<constant>V4L2_CID_WHITENESS</constant>,
+<constant>V4L2_CID_HCENTER</constant> and
+<constant>V4L2_CID_VCENTER</constant> were deprecated.
+</para>
+ </listitem>
+ <listitem>
+ <para>A <link linkend="camera-controls">Camera controls
+class</link> was added, with the new controls
+<constant>V4L2_CID_EXPOSURE_AUTO</constant>,
+<constant>V4L2_CID_EXPOSURE_ABSOLUTE</constant>,
+<constant>V4L2_CID_EXPOSURE_AUTO_PRIORITY</constant>,
+<constant>V4L2_CID_PAN_RELATIVE</constant>,
+<constant>V4L2_CID_TILT_RELATIVE</constant>,
+<constant>V4L2_CID_PAN_RESET</constant>,
+<constant>V4L2_CID_TILT_RESET</constant>,
+<constant>V4L2_CID_PAN_ABSOLUTE</constant>,
+<constant>V4L2_CID_TILT_ABSOLUTE</constant>,
+<constant>V4L2_CID_FOCUS_ABSOLUTE</constant>,
+<constant>V4L2_CID_FOCUS_RELATIVE</constant> and
+<constant>V4L2_CID_FOCUS_AUTO</constant>.</para>
+ </listitem>
+ <listitem>
+ <para>The <constant>VIDIOC_G_MPEGCOMP</constant> and
+<constant>VIDIOC_S_MPEGCOMP</constant> ioctls, which were superseded
+by the <link linkend="extended-controls">extended controls</link>
+interface in Linux 2.6.18, where finally removed from the
+<filename>videodev2.h</filename> header file.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.26</title>
+ <orderedlist>
+ <listitem>
+ <para>The pixel formats
+<constant>V4L2_PIX_FMT_Y16</constant> and
+<constant>V4L2_PIX_FMT_SBGGR16</constant> were added.</para>
+ </listitem>
+ <listitem>
+ <para>Added user controls
+<constant>V4L2_CID_CHROMA_AGC</constant> and
+<constant>V4L2_CID_COLOR_KILLER</constant>.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.27</title>
+ <orderedlist>
+ <listitem>
+ <para>The &VIDIOC-S-HW-FREQ-SEEK; ioctl and the
+<constant>V4L2_CAP_HW_FREQ_SEEK</constant> capability were added.</para>
+ </listitem>
+ <listitem>
+ <para>The pixel formats
+<constant>V4L2_PIX_FMT_YVYU</constant>,
+<constant>V4L2_PIX_FMT_PCA501</constant>,
+<constant>V4L2_PIX_FMT_PCA505</constant>,
+<constant>V4L2_PIX_FMT_PCA508</constant>,
+<constant>V4L2_PIX_FMT_PCA561</constant>,
+<constant>V4L2_PIX_FMT_SGBRG8</constant>,
+<constant>V4L2_PIX_FMT_PAC207</constant> and
+<constant>V4L2_PIX_FMT_PJPG</constant> were added.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.28</title>
+ <orderedlist>
+ <listitem>
+ <para>Added <constant>V4L2_MPEG_AUDIO_ENCODING_AAC</constant> and
+<constant>V4L2_MPEG_AUDIO_ENCODING_AC3</constant> MPEG audio encodings.</para>
+ </listitem>
+ <listitem>
+ <para>Added <constant>V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC</constant> MPEG
+video encoding.</para>
+ </listitem>
+ <listitem>
+ <para>The pixel formats
+<constant>V4L2_PIX_FMT_SGRBG10</constant> and
+<constant>V4L2_PIX_FMT_SGRBG10DPCM8</constant> were added.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section>
+ <title>V4L2 in Linux 2.6.29</title>
+ <orderedlist>
+ <listitem>
+ <para>The <constant>VIDIOC_G_CHIP_IDENT</constant> ioctl was renamed
+to <constant>VIDIOC_G_CHIP_IDENT_OLD</constant> and &VIDIOC-DBG-G-CHIP-IDENT;
+was introduced in its place. The old struct <structname>v4l2_chip_ident</structname>
+was renamed to <structname id="v4l2-chip-ident-old">v4l2_chip_ident_old</structname>.</para>
+ </listitem>
+ <listitem>
+ <para>The pixel formats
+<constant>V4L2_PIX_FMT_VYUY</constant>,
+<constant>V4L2_PIX_FMT_NV16</constant> and
+<constant>V4L2_PIX_FMT_NV61</constant> were added.</para>
+ </listitem>
+ <listitem>
+ <para>Added camera controls
+<constant>V4L2_CID_ZOOM_ABSOLUTE</constant>,
+<constant>V4L2_CID_ZOOM_RELATIVE</constant>,
+<constant>V4L2_CID_ZOOM_CONTINUOUS</constant> and
+<constant>V4L2_CID_PRIVACY</constant>.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+ <section>
+ <title>V4L2 in Linux 2.6.30</title>
+ <orderedlist>
+ <listitem>
+ <para>New control flag <constant>V4L2_CTRL_FLAG_WRITE_ONLY</constant> was added.</para>
+ </listitem>
+ <listitem>
+ <para>New control <constant>V4L2_CID_COLORFX</constant> was added.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+ <section>
+ <title>V4L2 in Linux 2.6.32</title>
+ <orderedlist>
+ <listitem>
+ <para>In order to be easier to compare a V4L2 API and a kernel
+version, now V4L2 API is numbered using the Linux Kernel version numeration.</para>
+ </listitem>
+ <listitem>
+ <para>Finalized the RDS capture API. See <xref linkend="rds" /> for
+more information.</para>
+ </listitem>
+ <listitem>
+ <para>Added new capabilities for modulators and RDS encoders.</para>
+ </listitem>
+ <listitem>
+ <para>Add description for libv4l API.</para>
+ </listitem>
+ <listitem>
+ <para>Added support for string controls via new type <constant>V4L2_CTRL_TYPE_STRING</constant>.</para>
+ </listitem>
+ <listitem>
+ <para>Added <constant>V4L2_CID_BAND_STOP_FILTER</constant> documentation.</para>
+ </listitem>
+ <listitem>
+ <para>Added FM Modulator (FM TX) Extended Control Class: <constant>V4L2_CTRL_CLASS_FM_TX</constant> and their Control IDs.</para>
+ </listitem>
+ <listitem>
+ <para>Added Remote Controller chapter, describing the default Remote Controller mapping for media devices.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+ <section>
+ <title>V4L2 in Linux 2.6.33</title>
+ <orderedlist>
+ <listitem>
+ <para>Added support for Digital Video timings in order to support HDTV receivers and transmitters.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+ <section>
+ <title>V4L2 in Linux 2.6.34</title>
+ <orderedlist>
+ <listitem>
+ <para>Added
+<constant>V4L2_CID_IRIS_ABSOLUTE</constant> and
+<constant>V4L2_CID_IRIS_RELATIVE</constant> controls to the
+ <link linkend="camera-controls">Camera controls class</link>.
+ </para>
+ </listitem>
+ </orderedlist>
+ </section>
+ <section>
+ <title>V4L2 in Linux 2.6.37</title>
+ <orderedlist>
+ <listitem>
+ <para>Remove the vtx (videotext/teletext) API. This API was no longer
+used and no hardware exists to verify the API. Nor were any userspace applications found
+that used it. It was originally scheduled for removal in 2.6.35.
+ </para>
+ </listitem>
+ </orderedlist>
+ </section>
+ <section>
+ <title>V4L2 in Linux 2.6.39</title>
+ <orderedlist>
+ <listitem>
+ <para>The old VIDIOC_*_OLD symbols and V4L1 support were removed.</para>
+ </listitem>
+ <listitem>
+ <para>Multi-planar API added. Does not affect the compatibility of
+ current drivers and applications. See
+ <link linkend="planar-apis">multi-planar API</link>
+ for details.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+ <section>
+ <title>V4L2 in Linux 3.1</title>
+ <orderedlist>
+ <listitem>
+ <para>VIDIOC_QUERYCAP now returns a per-subsystem version instead of a per-driver one.</para>
+ <para>Standardize an error code for invalid ioctl.</para>
+ <para>Added V4L2_CTRL_TYPE_BITMASK.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+ <section>
+ <title>V4L2 in Linux 3.2</title>
+ <orderedlist>
+ <listitem>
+ <para>V4L2_CTRL_FLAG_VOLATILE was added to signal volatile controls to userspace.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
+ <section id="other">
+ <title>Relation of V4L2 to other Linux multimedia APIs</title>
+
+ <section id="xvideo">
+ <title>X Video Extension</title>
+
+ <para>The X Video Extension (abbreviated XVideo or just Xv) is
+an extension of the X Window system, implemented for example by the
+XFree86 project. Its scope is similar to V4L2, an API to video capture
+and output devices for X clients. Xv allows applications to display
+live video in a window, send window contents to a TV output, and
+capture or output still images in XPixmaps<footnote>
+ <para>This is not implemented in XFree86.</para>
+ </footnote>. With their implementation XFree86 makes the
+extension available across many operating systems and
+architectures.</para>
+
+ <para>Because the driver is embedded into the X server Xv has a
+number of advantages over the V4L2 <link linkend="overlay">video
+overlay interface</link>. The driver can easily determine the overlay
+target, &ie; visible graphics memory or off-screen buffers for a
+destructive overlay. It can program the RAMDAC for a non-destructive
+overlay, scaling or color-keying, or the clipping functions of the
+video capture hardware, always in sync with drawing operations or
+windows moving or changing their stacking order.</para>
+
+ <para>To combine the advantages of Xv and V4L a special Xv
+driver exists in XFree86 and XOrg, just programming any overlay capable
+Video4Linux device it finds. To enable it
+<filename>/etc/X11/XF86Config</filename> must contain these lines:</para>
+ <para><screen>
+Section "Module"
+ Load "v4l"
+EndSection</screen></para>
+
+ <para>As of XFree86 4.2 this driver still supports only V4L
+ioctls, however it should work just fine with all V4L2 devices through
+the V4L2 backward-compatibility layer. Since V4L2 permits multiple
+opens it is possible (if supported by the V4L2 driver) to capture
+video while an X client requested video overlay. Restrictions of
+simultaneous capturing and overlay are discussed in <xref
+ linkend="overlay" /> apply.</para>
+
+ <para>Only marginally related to V4L2, XFree86 extended Xv to
+support hardware YUV to RGB conversion and scaling for faster video
+playback, and added an interface to MPEG-2 decoding hardware. This API
+is useful to display images captured with V4L2 devices.</para>
+ </section>
+
+ <section>
+ <title>Digital Video</title>
+
+ <para>V4L2 does not support digital terrestrial, cable or
+satellite broadcast. A separate project aiming at digital receivers
+exists. You can find its homepage at <ulink
+url="http://linuxtv.org">http://linuxtv.org</ulink>. The Linux DVB API
+has no connection to the V4L2 API except that drivers for hybrid
+hardware may support both.</para>
+ </section>
+
+ <section>
+ <title>Audio Interfaces</title>
+
+ <para>[to do - OSS/ALSA]</para>
+ </section>
+ </section>
+
+ <section id="experimental">
+ <title>Experimental API Elements</title>
+
+ <para>The following V4L2 API elements are currently experimental
+and may change in the future.</para>
+
+ <itemizedlist>
+ <listitem>
+ <para>Video Output Overlay (OSD) Interface, <xref
+ linkend="osd" />.</para>
+ </listitem>
+ <listitem>
+ <para><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY</constant>,
+ &v4l2-buf-type;, <xref linkend="v4l2-buf-type" />.</para>
+ </listitem>
+ <listitem>
+ <para><constant>V4L2_CAP_VIDEO_OUTPUT_OVERLAY</constant>,
+&VIDIOC-QUERYCAP; ioctl, <xref linkend="device-capabilities" />.</para>
+ </listitem>
+ <listitem>
+ <para>&VIDIOC-ENUM-FRAMESIZES; and
+&VIDIOC-ENUM-FRAMEINTERVALS; ioctls.</para>
+ </listitem>
+ <listitem>
+ <para>&VIDIOC-G-ENC-INDEX; ioctl.</para>
+ </listitem>
+ <listitem>
+ <para>&VIDIOC-ENCODER-CMD; and &VIDIOC-TRY-ENCODER-CMD;
+ioctls.</para>
+ </listitem>
+ <listitem>
+ <para>&VIDIOC-DBG-G-REGISTER; and &VIDIOC-DBG-S-REGISTER;
+ioctls.</para>
+ </listitem>
+ <listitem>
+ <para>&VIDIOC-DBG-G-CHIP-IDENT; ioctl.</para>
+ </listitem>
+ <listitem>
+ <para>Flash API. <xref linkend="flash-controls" /></para>
+ </listitem>
+ <listitem>
+ <para>&VIDIOC-CREATE-BUFS; and &VIDIOC-PREPARE-BUF; ioctls.</para>
+ </listitem>
+ </itemizedlist>
+ </section>
+
+ <section id="obsolete">
+ <title>Obsolete API Elements</title>
+
+ <para>The following V4L2 API elements were superseded by new
+interfaces and should not be implemented in new drivers.</para>
+
+ <itemizedlist>
+ <listitem>
+ <para><constant>VIDIOC_G_MPEGCOMP</constant> and
+<constant>VIDIOC_S_MPEGCOMP</constant> ioctls. Use Extended Controls,
+<xref linkend="extended-controls" />.</para>
+ </listitem>
+ </itemizedlist>
+ </section>
+ </section>
+
+ <!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "v4l2.sgml"
+indent-tabs-mode: nil
+End:
+ -->
diff --git a/Documentation/DocBook/media/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml
new file mode 100644
index 0000000..3bc5ee8
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/controls.xml
@@ -0,0 +1,3367 @@
+ <section id="control">
+ <title>User Controls</title>
+
+ <para>Devices typically have a number of user-settable controls
+such as brightness, saturation and so on, which would be presented to
+the user on a graphical user interface. But, different devices
+will have different controls available, and furthermore, the range of
+possible values, and the default value will vary from device to
+device. The control ioctls provide the information and a mechanism to
+create a nice user interface for these controls that will work
+correctly with any device.</para>
+
+ <para>All controls are accessed using an ID value. V4L2 defines
+several IDs for specific purposes. Drivers can also implement their
+own custom controls using <constant>V4L2_CID_PRIVATE_BASE</constant>
+and higher values. The pre-defined control IDs have the prefix
+<constant>V4L2_CID_</constant>, and are listed in <xref
+linkend="control-id" />. The ID is used when querying the attributes of
+a control, and when getting or setting the current value.</para>
+
+ <para>Generally applications should present controls to the user
+without assumptions about their purpose. Each control comes with a
+name string the user is supposed to understand. When the purpose is
+non-intuitive the driver writer should provide a user manual, a user
+interface plug-in or a driver specific panel application. Predefined
+IDs were introduced to change a few controls programmatically, for
+example to mute a device during a channel switch.</para>
+
+ <para>Drivers may enumerate different controls after switching
+the current video input or output, tuner or modulator, or audio input
+or output. Different in the sense of other bounds, another default and
+current value, step size or other menu items. A control with a certain
+<emphasis>custom</emphasis> ID can also change name and
+type.<footnote>
+ <para>It will be more convenient for applications if drivers
+make use of the <constant>V4L2_CTRL_FLAG_DISABLED</constant> flag, but
+that was never required.</para>
+ </footnote> Control values are stored globally, they do not
+change when switching except to stay within the reported bounds. They
+also do not change ⪚ when the device is opened or closed, when the
+tuner radio frequency is changed or generally never without
+application request. Since V4L2 specifies no event mechanism, panel
+applications intended to cooperate with other panel applications (be
+they built into a larger application, as a TV viewer) may need to
+regularly poll control values to update their user
+interface.<footnote>
+ <para>Applications could call an ioctl to request events.
+After another process called &VIDIOC-S-CTRL; or another ioctl changing
+shared properties the &func-select; function would indicate
+readability until any ioctl (querying the properties) is
+called.</para>
+ </footnote></para>
+
+ <para>
+ All controls use machine endianness.
+ </para>
+
+ <table pgwide="1" frame="none" id="control-id">
+ <title>Control IDs</title>
+ <tgroup cols="3">
+ &cs-def;
+ <thead>
+ <row>
+ <entry>ID</entry>
+ <entry>Type</entry>
+ <entry>Description</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_CID_BASE</constant></entry>
+ <entry></entry>
+ <entry>First predefined ID, equal to
+<constant>V4L2_CID_BRIGHTNESS</constant>.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_USER_BASE</constant></entry>
+ <entry></entry>
+ <entry>Synonym of <constant>V4L2_CID_BASE</constant>.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_BRIGHTNESS</constant></entry>
+ <entry>integer</entry>
+ <entry>Picture brightness, or more precisely, the black
+level.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_CONTRAST</constant></entry>
+ <entry>integer</entry>
+ <entry>Picture contrast or luma gain.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_SATURATION</constant></entry>
+ <entry>integer</entry>
+ <entry>Picture color saturation or chroma gain.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_HUE</constant></entry>
+ <entry>integer</entry>
+ <entry>Hue or color balance.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_AUDIO_VOLUME</constant></entry>
+ <entry>integer</entry>
+ <entry>Overall audio volume. Note some drivers also
+provide an OSS or ALSA mixer interface.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_AUDIO_BALANCE</constant></entry>
+ <entry>integer</entry>
+ <entry>Audio stereo balance. Minimum corresponds to all
+the way left, maximum to right.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_AUDIO_BASS</constant></entry>
+ <entry>integer</entry>
+ <entry>Audio bass adjustment.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_AUDIO_TREBLE</constant></entry>
+ <entry>integer</entry>
+ <entry>Audio treble adjustment.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_AUDIO_MUTE</constant></entry>
+ <entry>boolean</entry>
+ <entry>Mute audio, &ie; set the volume to zero, however
+without affecting <constant>V4L2_CID_AUDIO_VOLUME</constant>. Like
+ALSA drivers, V4L2 drivers must mute at load time to avoid excessive
+noise. Actually the entire device should be reset to a low power
+consumption state.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_AUDIO_LOUDNESS</constant></entry>
+ <entry>boolean</entry>
+ <entry>Loudness mode (bass boost).</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_BLACK_LEVEL</constant></entry>
+ <entry>integer</entry>
+ <entry>Another name for brightness (not a synonym of
+<constant>V4L2_CID_BRIGHTNESS</constant>). This control is deprecated
+and should not be used in new drivers and applications.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_AUTO_WHITE_BALANCE</constant></entry>
+ <entry>boolean</entry>
+ <entry>Automatic white balance (cameras).</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_DO_WHITE_BALANCE</constant></entry>
+ <entry>button</entry>
+ <entry>This is an action control. When set (the value is
+ignored), the device will do a white balance and then hold the current
+setting. Contrast this with the boolean
+<constant>V4L2_CID_AUTO_WHITE_BALANCE</constant>, which, when
+activated, keeps adjusting the white balance.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_RED_BALANCE</constant></entry>
+ <entry>integer</entry>
+ <entry>Red chroma balance.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_BLUE_BALANCE</constant></entry>
+ <entry>integer</entry>
+ <entry>Blue chroma balance.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_GAMMA</constant></entry>
+ <entry>integer</entry>
+ <entry>Gamma adjust.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_WHITENESS</constant></entry>
+ <entry>integer</entry>
+ <entry>Whiteness for grey-scale devices. This is a synonym
+for <constant>V4L2_CID_GAMMA</constant>. This control is deprecated
+and should not be used in new drivers and applications.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_EXPOSURE</constant></entry>
+ <entry>integer</entry>
+ <entry>Exposure (cameras). [Unit?]</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_AUTOGAIN</constant></entry>
+ <entry>boolean</entry>
+ <entry>Automatic gain/exposure control.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_GAIN</constant></entry>
+ <entry>integer</entry>
+ <entry>Gain control.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_HFLIP</constant></entry>
+ <entry>boolean</entry>
+ <entry>Mirror the picture horizontally.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_VFLIP</constant></entry>
+ <entry>boolean</entry>
+ <entry>Mirror the picture vertically.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_HCENTER_DEPRECATED</constant> (formerly <constant>V4L2_CID_HCENTER</constant>)</entry>
+ <entry>integer</entry>
+ <entry>Horizontal image centering. This control is
+deprecated. New drivers and applications should use the <link
+linkend="camera-controls">Camera class controls</link>
+<constant>V4L2_CID_PAN_ABSOLUTE</constant>,
+<constant>V4L2_CID_PAN_RELATIVE</constant> and
+<constant>V4L2_CID_PAN_RESET</constant> instead.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_VCENTER_DEPRECATED</constant>
+ (formerly <constant>V4L2_CID_VCENTER</constant>)</entry>
+ <entry>integer</entry>
+ <entry>Vertical image centering. Centering is intended to
+<emphasis>physically</emphasis> adjust cameras. For image cropping see
+<xref linkend="crop" />, for clipping <xref linkend="overlay" />. This
+control is deprecated. New drivers and applications should use the
+<link linkend="camera-controls">Camera class controls</link>
+<constant>V4L2_CID_TILT_ABSOLUTE</constant>,
+<constant>V4L2_CID_TILT_RELATIVE</constant> and
+<constant>V4L2_CID_TILT_RESET</constant> instead.</entry>
+ </row>
+ <row id="v4l2-power-line-frequency">
+ <entry><constant>V4L2_CID_POWER_LINE_FREQUENCY</constant></entry>
+ <entry>enum</entry>
+ <entry>Enables a power line frequency filter to avoid
+flicker. Possible values for <constant>enum v4l2_power_line_frequency</constant> are:
+<constant>V4L2_CID_POWER_LINE_FREQUENCY_DISABLED</constant> (0),
+<constant>V4L2_CID_POWER_LINE_FREQUENCY_50HZ</constant> (1),
+<constant>V4L2_CID_POWER_LINE_FREQUENCY_60HZ</constant> (2) and
+<constant>V4L2_CID_POWER_LINE_FREQUENCY_AUTO</constant> (3).</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_HUE_AUTO</constant></entry>
+ <entry>boolean</entry>
+ <entry>Enables automatic hue control by the device. The
+effect of setting <constant>V4L2_CID_HUE</constant> while automatic
+hue control is enabled is undefined, drivers should ignore such
+request.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_WHITE_BALANCE_TEMPERATURE</constant></entry>
+ <entry>integer</entry>
+ <entry>This control specifies the white balance settings
+as a color temperature in Kelvin. A driver should have a minimum of
+2800 (incandescent) to 6500 (daylight). For more information about
+color temperature see <ulink
+url="http://en.wikipedia.org/wiki/Color_temperature">Wikipedia</ulink>.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_SHARPNESS</constant></entry>
+ <entry>integer</entry>
+ <entry>Adjusts the sharpness filters in a camera. The
+minimum value disables the filters, higher values give a sharper
+picture.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_BACKLIGHT_COMPENSATION</constant></entry>
+ <entry>integer</entry>
+ <entry>Adjusts the backlight compensation in a camera. The
+minimum value disables backlight compensation.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_CHROMA_AGC</constant></entry>
+ <entry>boolean</entry>
+ <entry>Chroma automatic gain control.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_CHROMA_GAIN</constant></entry>
+ <entry>integer</entry>
+ <entry>Adjusts the Chroma gain control (for use when chroma AGC
+ is disabled).</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_COLOR_KILLER</constant></entry>
+ <entry>boolean</entry>
+ <entry>Enable the color killer (&ie; force a black & white image in case of a weak video signal).</entry>
+ </row>
+ <row id="v4l2-colorfx">
+ <entry><constant>V4L2_CID_COLORFX</constant></entry>
+ <entry>enum</entry>
+ <entry>Selects a color effect. Possible values for
+<constant>enum v4l2_colorfx</constant> are:
+<constant>V4L2_COLORFX_NONE</constant> (0),
+<constant>V4L2_COLORFX_BW</constant> (1),
+<constant>V4L2_COLORFX_SEPIA</constant> (2),
+<constant>V4L2_COLORFX_NEGATIVE</constant> (3),
+<constant>V4L2_COLORFX_EMBOSS</constant> (4),
+<constant>V4L2_COLORFX_SKETCH</constant> (5),
+<constant>V4L2_COLORFX_SKY_BLUE</constant> (6),
+<constant>V4L2_COLORFX_GRASS_GREEN</constant> (7),
+<constant>V4L2_COLORFX_SKIN_WHITEN</constant> (8) and
+<constant>V4L2_COLORFX_VIVID</constant> (9).</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_ROTATE</constant></entry>
+ <entry>integer</entry>
+ <entry>Rotates the image by specified angle. Common angles are 90,
+ 270 and 180. Rotating the image to 90 and 270 will reverse the height
+ and width of the display window. It is necessary to set the new height and
+ width of the picture using the &VIDIOC-S-FMT; ioctl according to
+ the rotation angle selected.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_BG_COLOR</constant></entry>
+ <entry>integer</entry>
+ <entry>Sets the background color on the current output device.
+ Background color needs to be specified in the RGB24 format. The
+ supplied 32 bit value is interpreted as bits 0-7 Red color information,
+ bits 8-15 Green color information, bits 16-23 Blue color
+ information and bits 24-31 must be zero.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_ILLUMINATORS_1</constant>
+ <constant>V4L2_CID_ILLUMINATORS_2</constant></entry>
+ <entry>boolean</entry>
+ <entry>Switch on or off the illuminator 1 or 2 of the device
+ (usually a microscope).</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_LASTP1</constant></entry>
+ <entry></entry>
+ <entry>End of the predefined control IDs (currently
+<constant>V4L2_CID_ILLUMINATORS_2</constant> + 1).</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_MIN_BUFFERS_FOR_CAPTURE</constant></entry>
+ <entry>integer</entry>
+ <entry>This is a read-only control that can be read by the application
+and used as a hint to determine the number of CAPTURE buffers to pass to REQBUFS.
+The value is the minimum number of CAPTURE buffers that is necessary for hardware
+to work.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_MIN_BUFFERS_FOR_OUTPUT</constant></entry>
+ <entry>integer</entry>
+ <entry>This is a read-only control that can be read by the application
+and used as a hint to determine the number of OUTPUT buffers to pass to REQBUFS.
+The value is the minimum number of OUTPUT buffers that is necessary for hardware
+to work.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_PRIVATE_BASE</constant></entry>
+ <entry></entry>
+ <entry>ID of the first custom (driver specific) control.
+Applications depending on particular custom controls should check the
+driver name and version, see <xref linkend="querycap" />.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <para>Applications can enumerate the available controls with the
+&VIDIOC-QUERYCTRL; and &VIDIOC-QUERYMENU; ioctls, get and set a
+control value with the &VIDIOC-G-CTRL; and &VIDIOC-S-CTRL; ioctls.
+Drivers must implement <constant>VIDIOC_QUERYCTRL</constant>,
+<constant>VIDIOC_G_CTRL</constant> and
+<constant>VIDIOC_S_CTRL</constant> when the device has one or more
+controls, <constant>VIDIOC_QUERYMENU</constant> when it has one or
+more menu type controls.</para>
+
+ <example>
+ <title>Enumerating all controls</title>
+
+ <programlisting>
+&v4l2-queryctrl; queryctrl;
+&v4l2-querymenu; querymenu;
+
+static void
+enumerate_menu (void)
+{
+ printf (" Menu items:\n");
+
+ memset (&querymenu, 0, sizeof (querymenu));
+ querymenu.id = queryctrl.id;
+
+ for (querymenu.index = queryctrl.minimum;
+ querymenu.index <= queryctrl.maximum;
+ querymenu.index++) {
+ if (0 == ioctl (fd, &VIDIOC-QUERYMENU;, &querymenu)) {
+ printf (" %s\n", querymenu.name);
+ }
+ }
+}
+
+memset (&queryctrl, 0, sizeof (queryctrl));
+
+for (queryctrl.id = V4L2_CID_BASE;
+ queryctrl.id < V4L2_CID_LASTP1;
+ queryctrl.id++) {
+ if (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &queryctrl)) {
+ if (queryctrl.flags & V4L2_CTRL_FLAG_DISABLED)
+ continue;
+
+ printf ("Control %s\n", queryctrl.name);
+
+ if (queryctrl.type == V4L2_CTRL_TYPE_MENU)
+ enumerate_menu ();
+ } else {
+ if (errno == EINVAL)
+ continue;
+
+ perror ("VIDIOC_QUERYCTRL");
+ exit (EXIT_FAILURE);
+ }
+}
+
+for (queryctrl.id = V4L2_CID_PRIVATE_BASE;;
+ queryctrl.id++) {
+ if (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &queryctrl)) {
+ if (queryctrl.flags & V4L2_CTRL_FLAG_DISABLED)
+ continue;
+
+ printf ("Control %s\n", queryctrl.name);
+
+ if (queryctrl.type == V4L2_CTRL_TYPE_MENU)
+ enumerate_menu ();
+ } else {
+ if (errno == EINVAL)
+ break;
+
+ perror ("VIDIOC_QUERYCTRL");
+ exit (EXIT_FAILURE);
+ }
+}
+</programlisting>
+ </example>
+
+ <example>
+ <title>Changing controls</title>
+
+ <programlisting>
+&v4l2-queryctrl; queryctrl;
+&v4l2-control; control;
+
+memset (&queryctrl, 0, sizeof (queryctrl));
+queryctrl.id = V4L2_CID_BRIGHTNESS;
+
+if (-1 == ioctl (fd, &VIDIOC-QUERYCTRL;, &queryctrl)) {
+ if (errno != EINVAL) {
+ perror ("VIDIOC_QUERYCTRL");
+ exit (EXIT_FAILURE);
+ } else {
+ printf ("V4L2_CID_BRIGHTNESS is not supported\n");
+ }
+} else if (queryctrl.flags & V4L2_CTRL_FLAG_DISABLED) {
+ printf ("V4L2_CID_BRIGHTNESS is not supported\n");
+} else {
+ memset (&control, 0, sizeof (control));
+ control.id = V4L2_CID_BRIGHTNESS;
+ control.value = queryctrl.default_value;
+
+ if (-1 == ioctl (fd, &VIDIOC-S-CTRL;, &control)) {
+ perror ("VIDIOC_S_CTRL");
+ exit (EXIT_FAILURE);
+ }
+}
+
+memset (&control, 0, sizeof (control));
+control.id = V4L2_CID_CONTRAST;
+
+if (0 == ioctl (fd, &VIDIOC-G-CTRL;, &control)) {
+ control.value += 1;
+
+ /* The driver may clamp the value or return ERANGE, ignored here */
+
+ if (-1 == ioctl (fd, &VIDIOC-S-CTRL;, &control)
+ && errno != ERANGE) {
+ perror ("VIDIOC_S_CTRL");
+ exit (EXIT_FAILURE);
+ }
+/* Ignore if V4L2_CID_CONTRAST is unsupported */
+} else if (errno != EINVAL) {
+ perror ("VIDIOC_G_CTRL");
+ exit (EXIT_FAILURE);
+}
+
+control.id = V4L2_CID_AUDIO_MUTE;
+control.value = TRUE; /* silence */
+
+/* Errors ignored */
+ioctl (fd, VIDIOC_S_CTRL, &control);
+</programlisting>
+ </example>
+ </section>
+
+ <section id="extended-controls">
+ <title>Extended Controls</title>
+
+ <section>
+ <title>Introduction</title>
+
+ <para>The control mechanism as originally designed was meant
+to be used for user settings (brightness, saturation, etc). However,
+it turned out to be a very useful model for implementing more
+complicated driver APIs where each driver implements only a subset of
+a larger API.</para>
+
+ <para>The MPEG encoding API was the driving force behind
+designing and implementing this extended control mechanism: the MPEG
+standard is quite large and the currently supported hardware MPEG
+encoders each only implement a subset of this standard. Further more,
+many parameters relating to how the video is encoded into an MPEG
+stream are specific to the MPEG encoding chip since the MPEG standard
+only defines the format of the resulting MPEG stream, not how the
+video is actually encoded into that format.</para>
+
+ <para>Unfortunately, the original control API lacked some
+features needed for these new uses and so it was extended into the
+(not terribly originally named) extended control API.</para>
+
+ <para>Even though the MPEG encoding API was the first effort
+to use the Extended Control API, nowadays there are also other classes
+of Extended Controls, such as Camera Controls and FM Transmitter Controls.
+The Extended Controls API as well as all Extended Controls classes are
+described in the following text.</para>
+ </section>
+
+ <section>
+ <title>The Extended Control API</title>
+
+ <para>Three new ioctls are available: &VIDIOC-G-EXT-CTRLS;,
+&VIDIOC-S-EXT-CTRLS; and &VIDIOC-TRY-EXT-CTRLS;. These ioctls act on
+arrays of controls (as opposed to the &VIDIOC-G-CTRL; and
+&VIDIOC-S-CTRL; ioctls that act on a single control). This is needed
+since it is often required to atomically change several controls at
+once.</para>
+
+ <para>Each of the new ioctls expects a pointer to a
+&v4l2-ext-controls;. This structure contains a pointer to the control
+array, a count of the number of controls in that array and a control
+class. Control classes are used to group similar controls into a
+single class. For example, control class
+<constant>V4L2_CTRL_CLASS_USER</constant> contains all user controls
+(&ie; all controls that can also be set using the old
+<constant>VIDIOC_S_CTRL</constant> ioctl). Control class
+<constant>V4L2_CTRL_CLASS_MPEG</constant> contains all controls
+relating to MPEG encoding, etc.</para>
+
+ <para>All controls in the control array must belong to the
+specified control class. An error is returned if this is not the
+case.</para>
+
+ <para>It is also possible to use an empty control array (count
+== 0) to check whether the specified control class is
+supported.</para>
+
+ <para>The control array is a &v4l2-ext-control; array. The
+<structname>v4l2_ext_control</structname> structure is very similar to
+&v4l2-control;, except for the fact that it also allows for 64-bit
+values and pointers to be passed.</para>
+
+ <para>It is important to realize that due to the flexibility of
+controls it is necessary to check whether the control you want to set
+actually is supported in the driver and what the valid range of values
+is. So use the &VIDIOC-QUERYCTRL; and &VIDIOC-QUERYMENU; ioctls to
+check this. Also note that it is possible that some of the menu
+indices in a control of type <constant>V4L2_CTRL_TYPE_MENU</constant>
+may not be supported (<constant>VIDIOC_QUERYMENU</constant> will
+return an error). A good example is the list of supported MPEG audio
+bitrates. Some drivers only support one or two bitrates, others
+support a wider range.</para>
+
+ <para>
+ All controls use machine endianness.
+ </para>
+ </section>
+
+ <section>
+ <title>Enumerating Extended Controls</title>
+
+ <para>The recommended way to enumerate over the extended
+controls is by using &VIDIOC-QUERYCTRL; in combination with the
+<constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant> flag:</para>
+
+ <informalexample>
+ <programlisting>
+&v4l2-queryctrl; qctrl;
+
+qctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL;
+while (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &qctrl)) {
+ /* ... */
+ qctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
+}
+</programlisting>
+ </informalexample>
+
+ <para>The initial control ID is set to 0 ORed with the
+<constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant> flag. The
+<constant>VIDIOC_QUERYCTRL</constant> ioctl will return the first
+control with a higher ID than the specified one. When no such controls
+are found an error is returned.</para>
+
+ <para>If you want to get all controls within a specific control
+class, then you can set the initial
+<structfield>qctrl.id</structfield> value to the control class and add
+an extra check to break out of the loop when a control of another
+control class is found:</para>
+
+ <informalexample>
+ <programlisting>
+qctrl.id = V4L2_CTRL_CLASS_MPEG | V4L2_CTRL_FLAG_NEXT_CTRL;
+while (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &qctrl)) {
+ if (V4L2_CTRL_ID2CLASS (qctrl.id) != V4L2_CTRL_CLASS_MPEG)
+ break;
+ /* ... */
+ qctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
+ }
+</programlisting>
+ </informalexample>
+
+ <para>The 32-bit <structfield>qctrl.id</structfield> value is
+subdivided into three bit ranges: the top 4 bits are reserved for
+flags (⪚ <constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant>) and are not
+actually part of the ID. The remaining 28 bits form the control ID, of
+which the most significant 12 bits define the control class and the
+least significant 16 bits identify the control within the control
+class. It is guaranteed that these last 16 bits are always non-zero
+for controls. The range of 0x1000 and up are reserved for
+driver-specific controls. The macro
+<constant>V4L2_CTRL_ID2CLASS(id)</constant> returns the control class
+ID based on a control ID.</para>
+
+ <para>If the driver does not support extended controls, then
+<constant>VIDIOC_QUERYCTRL</constant> will fail when used in
+combination with <constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant>. In
+that case the old method of enumerating control should be used (see
+1.8). But if it is supported, then it is guaranteed to enumerate over
+all controls, including driver-private controls.</para>
+ </section>
+
+ <section>
+ <title>Creating Control Panels</title>
+
+ <para>It is possible to create control panels for a graphical
+user interface where the user can select the various controls.
+Basically you will have to iterate over all controls using the method
+described above. Each control class starts with a control of type
+<constant>V4L2_CTRL_TYPE_CTRL_CLASS</constant>.
+<constant>VIDIOC_QUERYCTRL</constant> will return the name of this
+control class which can be used as the title of a tab page within a
+control panel.</para>
+
+ <para>The flags field of &v4l2-queryctrl; also contains hints on
+the behavior of the control. See the &VIDIOC-QUERYCTRL; documentation
+for more details.</para>
+ </section>
+
+ <section id="mpeg-controls">
+ <title>MPEG Control Reference</title>
+
+ <para>Below all controls within the MPEG control class are
+described. First the generic controls, then controls specific for
+certain hardware.</para>
+
+ <section>
+ <title>Generic MPEG Controls</title>
+
+ <table pgwide="1" frame="none" id="mpeg-control-id">
+ <title>MPEG Control IDs</title>
+ <tgroup cols="4">
+ <colspec colname="c1" colwidth="1*" />
+ <colspec colname="c2" colwidth="6*" />
+ <colspec colname="c3" colwidth="2*" />
+ <colspec colname="c4" colwidth="6*" />
+ <spanspec namest="c1" nameend="c2" spanname="id" />
+ <spanspec namest="c2" nameend="c4" spanname="descr" />
+ <thead>
+ <row>
+ <entry spanname="id" align="left">ID</entry>
+ <entry align="left">Type</entry>
+ </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_CLASS</constant> </entry>
+ <entry>class</entry>
+ </row><row><entry spanname="descr">The MPEG class
+descriptor. Calling &VIDIOC-QUERYCTRL; for this control will return a
+description of this control class. This description can be used as the
+caption of a Tab page in a GUI, for example.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-stream-type">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_TYPE</constant> </entry>
+ <entry>enum v4l2_mpeg_stream_type</entry>
+ </row><row><entry spanname="descr">The MPEG-1, -2 or -4
+output stream type. One cannot assume anything here. Each hardware
+MPEG encoder tends to support different subsets of the available MPEG
+stream types. This control is specific to multiplexed MPEG streams.
+The currently defined stream types are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG2_PS</constant> </entry>
+ <entry>MPEG-2 program stream</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG2_TS</constant> </entry>
+ <entry>MPEG-2 transport stream</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG1_SS</constant> </entry>
+ <entry>MPEG-1 system stream</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG2_DVD</constant> </entry>
+ <entry>MPEG-2 DVD-compatible stream</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG1_VCD</constant> </entry>
+ <entry>MPEG-1 VCD-compatible stream</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD</constant> </entry>
+ <entry>MPEG-2 SVCD-compatible stream</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PID_PMT</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Program Map Table
+Packet ID for the MPEG transport stream (default 16)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PID_AUDIO</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Audio Packet ID for
+the MPEG transport stream (default 256)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PID_VIDEO</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Video Packet ID for
+the MPEG transport stream (default 260)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PID_PCR</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Packet ID for the
+MPEG transport stream carrying PCR fields (default 259)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PES_ID_AUDIO</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Audio ID for MPEG
+PES</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PES_ID_VIDEO</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Video ID for MPEG
+PES</entry>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-stream-vbi-fmt">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_VBI_FMT</constant> </entry>
+ <entry>enum v4l2_mpeg_stream_vbi_fmt</entry>
+ </row><row><entry spanname="descr">Some cards can embed
+VBI data (⪚ Closed Caption, Teletext) into the MPEG stream. This
+control selects whether VBI data should be embedded, and if so, what
+embedding method should be used. The list of possible VBI formats
+depends on the driver. The currently defined VBI format types
+are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_STREAM_VBI_FMT_NONE</constant> </entry>
+ <entry>No VBI in the MPEG stream</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_STREAM_VBI_FMT_IVTV</constant> </entry>
+ <entry>VBI in private packets, IVTV format (documented
+in the kernel sources in the file <filename>Documentation/video4linux/cx2341x/README.vbi</filename>)</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-audio-sampling-freq">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ</constant> </entry>
+ <entry>enum v4l2_mpeg_audio_sampling_freq</entry>
+ </row><row><entry spanname="descr">MPEG Audio sampling
+frequency. Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100</constant> </entry>
+ <entry>44.1 kHz</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000</constant> </entry>
+ <entry>48 kHz</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000</constant> </entry>
+ <entry>32 kHz</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-audio-encoding">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_ENCODING</constant> </entry>
+ <entry>enum v4l2_mpeg_audio_encoding</entry>
+ </row><row><entry spanname="descr">MPEG Audio encoding.
+This control is specific to multiplexed MPEG streams.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_ENCODING_LAYER_1</constant> </entry>
+ <entry>MPEG-1/2 Layer I encoding</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_ENCODING_LAYER_2</constant> </entry>
+ <entry>MPEG-1/2 Layer II encoding</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_ENCODING_LAYER_3</constant> </entry>
+ <entry>MPEG-1/2 Layer III encoding</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_ENCODING_AAC</constant> </entry>
+ <entry>MPEG-2/4 AAC (Advanced Audio Coding)</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_ENCODING_AC3</constant> </entry>
+ <entry>AC-3 aka ATSC A/52 encoding</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-audio-l1-bitrate">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_L1_BITRATE</constant> </entry>
+ <entry>enum v4l2_mpeg_audio_l1_bitrate</entry>
+ </row><row><entry spanname="descr">MPEG-1/2 Layer I bitrate.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_32K</constant> </entry>
+ <entry>32 kbit/s</entry></row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_64K</constant> </entry>
+ <entry>64 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_96K</constant> </entry>
+ <entry>96 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_128K</constant> </entry>
+ <entry>128 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_160K</constant> </entry>
+ <entry>160 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_192K</constant> </entry>
+ <entry>192 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_224K</constant> </entry>
+ <entry>224 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_256K</constant> </entry>
+ <entry>256 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_288K</constant> </entry>
+ <entry>288 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_320K</constant> </entry>
+ <entry>320 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_352K</constant> </entry>
+ <entry>352 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_384K</constant> </entry>
+ <entry>384 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_416K</constant> </entry>
+ <entry>416 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_448K</constant> </entry>
+ <entry>448 kbit/s</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-audio-l2-bitrate">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_L2_BITRATE</constant> </entry>
+ <entry>enum v4l2_mpeg_audio_l2_bitrate</entry>
+ </row><row><entry spanname="descr">MPEG-1/2 Layer II bitrate.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_32K</constant> </entry>
+ <entry>32 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_48K</constant> </entry>
+ <entry>48 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_56K</constant> </entry>
+ <entry>56 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_64K</constant> </entry>
+ <entry>64 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_80K</constant> </entry>
+ <entry>80 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_96K</constant> </entry>
+ <entry>96 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_112K</constant> </entry>
+ <entry>112 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_128K</constant> </entry>
+ <entry>128 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_160K</constant> </entry>
+ <entry>160 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_192K</constant> </entry>
+ <entry>192 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_224K</constant> </entry>
+ <entry>224 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_256K</constant> </entry>
+ <entry>256 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_320K</constant> </entry>
+ <entry>320 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_384K</constant> </entry>
+ <entry>384 kbit/s</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-audio-l3-bitrate">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_L3_BITRATE</constant> </entry>
+ <entry>enum v4l2_mpeg_audio_l3_bitrate</entry>
+ </row><row><entry spanname="descr">MPEG-1/2 Layer III bitrate.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_32K</constant> </entry>
+ <entry>32 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_40K</constant> </entry>
+ <entry>40 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_48K</constant> </entry>
+ <entry>48 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_56K</constant> </entry>
+ <entry>56 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_64K</constant> </entry>
+ <entry>64 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_80K</constant> </entry>
+ <entry>80 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_96K</constant> </entry>
+ <entry>96 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_112K</constant> </entry>
+ <entry>112 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_128K</constant> </entry>
+ <entry>128 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_160K</constant> </entry>
+ <entry>160 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_192K</constant> </entry>
+ <entry>192 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_224K</constant> </entry>
+ <entry>224 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_256K</constant> </entry>
+ <entry>256 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_320K</constant> </entry>
+ <entry>320 kbit/s</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_AAC_BITRATE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">AAC bitrate in bits per second.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-audio-ac3-bitrate">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_AC3_BITRATE</constant> </entry>
+ <entry>enum v4l2_mpeg_audio_ac3_bitrate</entry>
+ </row><row><entry spanname="descr">AC-3 bitrate.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_32K</constant> </entry>
+ <entry>32 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_40K</constant> </entry>
+ <entry>40 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_48K</constant> </entry>
+ <entry>48 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_56K</constant> </entry>
+ <entry>56 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_64K</constant> </entry>
+ <entry>64 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_80K</constant> </entry>
+ <entry>80 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_96K</constant> </entry>
+ <entry>96 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_112K</constant> </entry>
+ <entry>112 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_128K</constant> </entry>
+ <entry>128 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_160K</constant> </entry>
+ <entry>160 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_192K</constant> </entry>
+ <entry>192 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_224K</constant> </entry>
+ <entry>224 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_256K</constant> </entry>
+ <entry>256 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_320K</constant> </entry>
+ <entry>320 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_384K</constant> </entry>
+ <entry>384 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_448K</constant> </entry>
+ <entry>448 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_512K</constant> </entry>
+ <entry>512 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_576K</constant> </entry>
+ <entry>576 kbit/s</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_640K</constant> </entry>
+ <entry>640 kbit/s</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-audio-mode">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_MODE</constant> </entry>
+ <entry>enum v4l2_mpeg_audio_mode</entry>
+ </row><row><entry spanname="descr">MPEG Audio mode.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_MODE_STEREO</constant> </entry>
+ <entry>Stereo</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_MODE_JOINT_STEREO</constant> </entry>
+ <entry>Joint Stereo</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_MODE_DUAL</constant> </entry>
+ <entry>Bilingual</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_MODE_MONO</constant> </entry>
+ <entry>Mono</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-audio-mode-extension">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_MODE_EXTENSION</constant> </entry>
+ <entry>enum v4l2_mpeg_audio_mode_extension</entry>
+ </row><row><entry spanname="descr">Joint Stereo
+audio mode extension. In Layer I and II they indicate which subbands
+are in intensity stereo. All other subbands are coded in stereo. Layer
+III is not (yet) supported. Possible values
+are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4</constant> </entry>
+ <entry>Subbands 4-31 in intensity stereo</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_8</constant> </entry>
+ <entry>Subbands 8-31 in intensity stereo</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_12</constant> </entry>
+ <entry>Subbands 12-31 in intensity stereo</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_16</constant> </entry>
+ <entry>Subbands 16-31 in intensity stereo</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-audio-emphasis">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_EMPHASIS</constant> </entry>
+ <entry>enum v4l2_mpeg_audio_emphasis</entry>
+ </row><row><entry spanname="descr">Audio Emphasis.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_EMPHASIS_NONE</constant> </entry>
+ <entry>None</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_EMPHASIS_50_DIV_15_uS</constant> </entry>
+ <entry>50/15 microsecond emphasis</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17</constant> </entry>
+ <entry>CCITT J.17</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-audio-crc">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_CRC</constant> </entry>
+ <entry>enum v4l2_mpeg_audio_crc</entry>
+ </row><row><entry spanname="descr">CRC method. Possible
+values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_CRC_NONE</constant> </entry>
+ <entry>None</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_AUDIO_CRC_CRC16</constant> </entry>
+ <entry>16 bit parity check</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_MUTE</constant> </entry>
+ <entry>boolean</entry>
+ </row><row><entry spanname="descr">Mutes the audio when
+capturing. This is not done by muting audio hardware, which can still
+produce a slight hiss, but in the encoder itself, guaranteeing a fixed
+and reproducible audio bitstream. 0 = unmuted, 1 = muted.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-encoding">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_ENCODING</constant> </entry>
+ <entry>enum v4l2_mpeg_video_encoding</entry>
+ </row><row><entry spanname="descr">MPEG Video encoding
+method. This control is specific to multiplexed MPEG streams.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_ENCODING_MPEG_1</constant> </entry>
+ <entry>MPEG-1 Video encoding</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_ENCODING_MPEG_2</constant> </entry>
+ <entry>MPEG-2 Video encoding</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC</constant> </entry>
+ <entry>MPEG-4 AVC (H.264) Video encoding</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-aspect">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_ASPECT</constant> </entry>
+ <entry>enum v4l2_mpeg_video_aspect</entry>
+ </row><row><entry spanname="descr">Video aspect.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_ASPECT_1x1</constant> </entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_ASPECT_4x3</constant> </entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_ASPECT_16x9</constant> </entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_ASPECT_221x100</constant> </entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_B_FRAMES</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Number of B-Frames
+(default 2)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_GOP_SIZE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">GOP size (default
+12)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_GOP_CLOSURE</constant> </entry>
+ <entry>boolean</entry>
+ </row><row><entry spanname="descr">GOP closure (default
+1)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_PULLDOWN</constant> </entry>
+ <entry>boolean</entry>
+ </row><row><entry spanname="descr">Enable 3:2 pulldown
+(default 0)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-bitrate-mode">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_BITRATE_MODE</constant> </entry>
+ <entry>enum v4l2_mpeg_video_bitrate_mode</entry>
+ </row><row><entry spanname="descr">Video bitrate mode.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_BITRATE_MODE_VBR</constant> </entry>
+ <entry>Variable bitrate</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_BITRATE_MODE_CBR</constant> </entry>
+ <entry>Constant bitrate</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_BITRATE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Video bitrate in bits
+per second.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_BITRATE_PEAK</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Peak video bitrate in
+bits per second. Must be larger or equal to the average video bitrate.
+It is ignored if the video bitrate mode is set to constant
+bitrate.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">For every captured
+frame, skip this many subsequent frames (default 0).</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MUTE</constant> </entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">"Mutes" the video to a
+fixed color when capturing. This is useful for testing, to produce a
+fixed video bitstream. 0 = unmuted, 1 = muted.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MUTE_YUV</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Sets the "mute" color
+of the video. The supplied 32-bit integer is interpreted as follows (bit
+0 = least significant bit):</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry>Bit 0:7</entry>
+ <entry>V chrominance information</entry>
+ </row>
+ <row>
+ <entry>Bit 8:15</entry>
+ <entry>U chrominance information</entry>
+ </row>
+ <row>
+ <entry>Bit 16:23</entry>
+ <entry>Y luminance information</entry>
+ </row>
+ <row>
+ <entry>Bit 24:31</entry>
+ <entry>Must be zero.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE</constant> </entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">If enabled the decoder expects to receive a single slice per buffer, otherwise
+the decoder expects a single frame in per buffer. Applicable to the decoder, all codecs.
+</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE</constant> </entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Enable writing sample aspect ratio in the Video Usability Information.
+Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-h264-vui-sar-idc">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC</constant> </entry>
+ <entry>enum v4l2_mpeg_video_h264_vui_sar_idc</entry>
+ </row>
+ <row><entry spanname="descr">VUI sample aspect ratio indicator for H.264 encoding. The value
+is defined in the table E-1 in the standard. Applicable to the H264 encoder.</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_UNSPECIFIED</constant> </entry>
+ <entry>Unspecified</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_1x1</constant> </entry>
+ <entry>1x1</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_12x11</constant> </entry>
+ <entry>12x11</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_10x11</constant> </entry>
+ <entry>10x11</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_16x11</constant> </entry>
+ <entry>16x11</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_40x33</constant> </entry>
+ <entry>40x33</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_24x11</constant> </entry>
+ <entry>24x11</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_20x11</constant> </entry>
+ <entry>20x11</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_32x11</constant> </entry>
+ <entry>32x11</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_80x33</constant> </entry>
+ <entry>80x33</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_18x11</constant> </entry>
+ <entry>18x11</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_15x11</constant> </entry>
+ <entry>15x11</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_64x33</constant> </entry>
+ <entry>64x33</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_160x99</constant> </entry>
+ <entry>160x99</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_4x3</constant> </entry>
+ <entry>4x3</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_3x2</constant> </entry>
+ <entry>3x2</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_2x1</constant> </entry>
+ <entry>2x1</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_EXTENDED</constant> </entry>
+ <entry>Extended SAR</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Extended sample aspect ratio width for H.264 VUI encoding.
+Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Extended sample aspect ratio height for H.264 VUI encoding.
+Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-h264-level">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_LEVEL</constant> </entry>
+ <entry>enum v4l2_mpeg_video_h264_level</entry>
+ </row>
+ <row><entry spanname="descr">The level information for the H264 video elementary stream.
+Applicable to the H264 encoder.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1_0</constant> </entry>
+ <entry>Level 1.0</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1B</constant> </entry>
+ <entry>Level 1B</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1_1</constant> </entry>
+ <entry>Level 1.1</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1_2</constant> </entry>
+ <entry>Level 1.2</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1_3</constant> </entry>
+ <entry>Level 1.3</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_2_0</constant> </entry>
+ <entry>Level 2.0</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_2_1</constant> </entry>
+ <entry>Level 2.1</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_2_2</constant> </entry>
+ <entry>Level 2.2</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_3_0</constant> </entry>
+ <entry>Level 3.0</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_3_1</constant> </entry>
+ <entry>Level 3.1</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_3_2</constant> </entry>
+ <entry>Level 3.2</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_4_0</constant> </entry>
+ <entry>Level 4.0</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_4_1</constant> </entry>
+ <entry>Level 4.1</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_4_2</constant> </entry>
+ <entry>Level 4.2</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_5_0</constant> </entry>
+ <entry>Level 5.0</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_5_1</constant> </entry>
+ <entry>Level 5.1</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-mpeg4-level">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL</constant> </entry>
+ <entry>enum v4l2_mpeg_video_mpeg4_level</entry>
+ </row>
+ <row><entry spanname="descr">The level information for the MPEG4 elementary stream.
+Applicable to the MPEG4 encoder.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_LEVEL_0</constant> </entry>
+ <entry>Level 0</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_LEVEL_0B</constant> </entry>
+ <entry>Level 0b</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_LEVEL_1</constant> </entry>
+ <entry>Level 1</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_LEVEL_2</constant> </entry>
+ <entry>Level 2</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_LEVEL_3</constant> </entry>
+ <entry>Level 3</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_LEVEL_3B</constant> </entry>
+ <entry>Level 3b</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_LEVEL_4</constant> </entry>
+ <entry>Level 4</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_LEVEL_5</constant> </entry>
+ <entry>Level 5</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-h264-profile">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_PROFILE</constant> </entry>
+ <entry>enum v4l2_mpeg_video_h264_profile</entry>
+ </row>
+ <row><entry spanname="descr">The profile information for H264.
+Applicable to the H264 encoder.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE</constant> </entry>
+ <entry>Baseline profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE</constant> </entry>
+ <entry>Constrained Baseline profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_MAIN</constant> </entry>
+ <entry>Main profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED</constant> </entry>
+ <entry>Extended profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH</constant> </entry>
+ <entry>High profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_10</constant> </entry>
+ <entry>High 10 profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_422</constant> </entry>
+ <entry>High 422 profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_444_PREDICTIVE</constant> </entry>
+ <entry>High 444 Predictive profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_10_INTRA</constant> </entry>
+ <entry>High 10 Intra profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_422_INTRA</constant> </entry>
+ <entry>High 422 Intra profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_444_INTRA</constant> </entry>
+ <entry>High 444 Intra profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_CAVLC_444_INTRA</constant> </entry>
+ <entry>CAVLC 444 Intra profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_SCALABLE_BASELINE</constant> </entry>
+ <entry>Scalable Baseline profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_SCALABLE_HIGH</constant> </entry>
+ <entry>Scalable High profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_SCALABLE_HIGH_INTRA</constant> </entry>
+ <entry>Scalable High Intra profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_STEREO_HIGH</constant> </entry>
+ <entry>Stereo High profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_MULTIVIEW_HIGH</constant> </entry>
+ <entry>Multiview High profile</entry>
+ </row>
+
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-mpeg4-profile">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE</constant> </entry>
+ <entry>enum v4l2_mpeg_video_mpeg4_profile</entry>
+ </row>
+ <row><entry spanname="descr">The profile information for MPEG4.
+Applicable to the MPEG4 encoder.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_PROFILE_SIMPLE</constant> </entry>
+ <entry>Simple profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_PROFILE_ADVANCED_SIMPLE</constant> </entry>
+ <entry>Advanced Simple profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_PROFILE_CORE</constant> </entry>
+ <entry>Core profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_PROFILE_SIMPLE_SCALABLE</constant> </entry>
+ <entry>Simple Scalable profile</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_PROFILE_ADVANCED_CODING_EFFICIENCY</constant> </entry>
+ <entry></entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MAX_REF_PIC</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">The maximum number of reference pictures used for encoding.
+Applicable to the encoder.
+</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-multi-slice-mode">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE</constant> </entry>
+ <entry>enum v4l2_mpeg_video_multi_slice_mode</entry>
+ </row>
+ <row><entry spanname="descr">Determines how the encoder should handle division of frame into slices.
+Applicable to the encoder.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE</constant> </entry>
+ <entry>Single slice per frame.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_MB</constant> </entry>
+ <entry>Multiple slices with set maximum number of macroblocks per slice.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_BYTES</constant> </entry>
+ <entry>Multiple slice with set maximum size in bytes per slice.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">The maximum number of macroblocks in a slice. Used when
+<constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE</constant> is set to <constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_MB</constant>.
+Applicable to the encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">The maximum size of a slice in bytes. Used when
+<constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE</constant> is set to <constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_BYTES</constant>.
+Applicable to the encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-h264-loop-filter-mode">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE</constant> </entry>
+ <entry>enum v4l2_mpeg_video_h264_loop_filter_mode</entry>
+ </row>
+ <row><entry spanname="descr">Loop filter mode for H264 encoder.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED</constant> </entry>
+ <entry>Loop filter is enabled.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED</constant> </entry>
+ <entry>Loop filter is disabled.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY</constant> </entry>
+ <entry>Loop filter is disabled at the slice boundary.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Loop filter alpha coefficient, defined in the H264 standard.
+Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Loop filter beta coefficient, defined in the H264 standard.
+Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-h264-entropy-mode">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE</constant> </entry>
+ <entry>enum v4l2_mpeg_video_h264_entropy_mode</entry>
+ </row>
+ <row><entry spanname="descr">Entropy coding mode for H264 - CABAC/CAVALC.
+Applicable to the H264 encoder.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CAVLC</constant> </entry>
+ <entry>Use CAVLC entropy coding.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CABAC</constant> </entry>
+ <entry>Use CABAC entropy coding.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM</constant> </entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Enable 8X8 transform for H264. Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Cyclic intra macroblock refresh. This is the number of continuous macroblocks
+refreshed every frame. Each frame a succesive set of macroblocks is refreshed until the cycle completes and starts from the
+top of the frame. Applicable to H264, H263 and MPEG4 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE</constant> </entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Frame level rate control enable.
+If this control is disabled then the quantization parameter for each frame type is constant and set with appropriate controls
+(e.g. <constant>V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP</constant>).
+If frame rate control is enabled then quantization parameter is adjusted to meet the chosen bitrate. Minimum and maximum value
+for the quantization parameter can be set with appropriate controls (e.g. <constant>V4L2_CID_MPEG_VIDEO_H263_MIN_QP</constant>).
+Applicable to encoders.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant> </entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Macroblock level rate control enable.
+Applicable to the MPEG4 and H264 encoders.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_QPEL</constant> </entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Quarter pixel motion estimation for MPEG4. Applicable to the MPEG4 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Quantization parameter for an I frame for H263. Valid range: from 1 to 31.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_MIN_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Minimum quantization parameter for H263. Valid range: from 1 to 31.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_MAX_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Maximum quantization parameter for H263. Valid range: from 1 to 31.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Quantization parameter for an P frame for H263. Valid range: from 1 to 31.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Quantization parameter for an B frame for H263. Valid range: from 1 to 31.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Quantization parameter for an I frame for H264. Valid range: from 0 to 51.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_MIN_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Minimum quantization parameter for H264. Valid range: from 0 to 51.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_MAX_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Maximum quantization parameter for H264. Valid range: from 0 to 51.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Quantization parameter for an P frame for H264. Valid range: from 0 to 51.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Quantization parameter for an B frame for H264. Valid range: from 0 to 51.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Quantization parameter for an I frame for MPEG4. Valid range: from 1 to 31.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_MIN_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Minimum quantization parameter for MPEG4. Valid range: from 1 to 31.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_MAX_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Maximum quantization parameter for MPEG4. Valid range: from 1 to 31.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Quantization parameter for an P frame for MPEG4. Valid range: from 1 to 31.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Quantization parameter for an B frame for MPEG4. Valid range: from 1 to 31.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VBV_SIZE</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">The Video Buffer Verifier size in kilobytes, it is used as a limitation of frame skip.
+The VBV is defined in the standard as a mean to verify that the produced stream will be succesfully decoded.
+The standard describes it as "Part of a hypothetical decoder that is conceptually connected to the
+output of the encoder. Its purpose is to provide a constraint on the variability of the data rate that an
+encoder or editing process may produce.".
+Applicable to the MPEG1, MPEG2, MPEG4 encoders.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">The Coded Picture Buffer size in kilobytes, it is used as a limitation of frame skip.
+The CPB is defined in the H264 standard as a mean to verify that the produced stream will be succesfully decoded.
+Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_I_PERIOD</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Period between I-frames in the open GOP for H264. In case of an open GOP
+this is the period between two I-frames. The period between IDR (Instantaneous Decoding Refresh) frames is taken from the GOP_SIZE control.
+An IDR frame, which stands for Instantaneous Decoding Refresh is an I-frame after which no prior frames are
+referenced. This means that a stream can be restarted from an IDR frame without the need to store or decode any
+previous frames. Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-header-mode">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_HEADER_MODE</constant> </entry>
+ <entry>enum v4l2_mpeg_video_header_mode</entry>
+ </row>
+ <row><entry spanname="descr">Determines whether the header is returned as the first buffer or is
+it returned together with the first frame. Applicable to encoders.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE</constant> </entry>
+ <entry>The stream header is returned separately in the first buffer.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME</constant> </entry>
+ <entry>The stream header is returned together with the first encoded frame.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER</constant> </entry>
+ <entry>boolean</entry>
+ </row><row><entry spanname="descr">Enabled the deblocking post processing filter for MPEG4 decoder.
+Applicable to the MPEG4 decoder.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_VOP_TIME_RES</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">vop_time_increment_resolution value for MPEG4. Applicable to the MPEG4 encoder.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_VOP_TIME_INC</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">vop_time_increment value for MPEG4. Applicable to the MPEG4 encoder.</entry>
+ </row>
+
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+
+ <section>
+ <title>MFC 5.1 MPEG Controls</title>
+
+ <para>The following MPEG class controls deal with MPEG
+decoding and encoding settings that are specific to the Multi Format Codec 5.1 device present
+in the S5P family of SoCs by Samsung.
+</para>
+
+ <table pgwide="1" frame="none" id="mfc51-control-id">
+ <title>MFC 5.1 Control IDs</title>
+ <tgroup cols="4">
+ <colspec colname="c1" colwidth="1*" />
+ <colspec colname="c2" colwidth="6*" />
+ <colspec colname="c3" colwidth="2*" />
+ <colspec colname="c4" colwidth="6*" />
+ <spanspec namest="c1" nameend="c2" spanname="id" />
+ <spanspec namest="c2" nameend="c4" spanname="descr" />
+ <thead>
+ <row>
+ <entry spanname="id" align="left">ID</entry>
+ <entry align="left">Type</entry>
+ </row><row><entry spanname="descr" align="left">Description</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_DECODER_H264_DISPLAY_DELAY_ENABLE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">If the display delay is enabled then the decoder has to return a
+CAPTURE buffer after processing a certain number of OUTPUT buffers. If this number is low, then it may result in
+buffers not being dequeued in display order. In addition hardware may still use those buffers as reference, thus
+application should not write to those buffers. This feature can be used for example for generating thumbnails of videos.
+Applicable to the H264 decoder.
+ </entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_DECODER_H264_DISPLAY_DELAY</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Display delay value for H264 decoder.
+The decoder is forced to return a decoded frame after the set 'display delay' number of frames. If this number is
+low it may result in frames returned out of dispaly order, in addition the hardware may still be using the returned buffer
+as a reference picture for subsequent frames.
+</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_NUM_REF_PIC_FOR_P</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">The number of reference pictures used for encoding a P picture.
+Applicable to the H264 encoder.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_PADDING</constant> </entry>
+ <entry>boolean</entry>
+ </row><row><entry spanname="descr">Padding enable in the encoder - use a color instead of repeating border pixels.
+Applicable to encoders.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_PADDING_YUV</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Padding color in the encoder. Applicable to encoders. The supplied 32-bit integer is interpreted as follows (bit
+0 = least significant bit):</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry>Bit 0:7</entry>
+ <entry>V chrominance information</entry>
+ </row>
+ <row>
+ <entry>Bit 8:15</entry>
+ <entry>U chrominance information</entry>
+ </row>
+ <row>
+ <entry>Bit 16:23</entry>
+ <entry>Y luminance information</entry>
+ </row>
+ <row>
+ <entry>Bit 24:31</entry>
+ <entry>Must be zero.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_RC_REACTION_COEFF</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Reaction coefficient for MFC rate control. Applicable to encoders.
+<para>Note 1: Valid only when the frame level RC is enabled.</para>
+<para>Note 2: For tight CBR, this field must be small (ex. 2 ~ 10).
+For VBR, this field must be large (ex. 100 ~ 1000).</para>
+<para>Note 3: It is not recommended to use the greater number than FRAME_RATE * (10^9 / BIT_RATE).</para>
+</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_DARK</constant> </entry>
+ <entry>boolean</entry>
+ </row><row><entry spanname="descr">Adaptive rate control for dark region.
+Valid only when H.264 and macroblock level RC is enabled (<constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant>).
+Applicable to the H264 encoder.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_SMOOTH</constant> </entry>
+ <entry>boolean</entry>
+ </row><row><entry spanname="descr">Adaptive rate control for smooth region.
+Valid only when H.264 and macroblock level RC is enabled (<constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant>).
+Applicable to the H264 encoder.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_STATIC</constant> </entry>
+ <entry>boolean</entry>
+ </row><row><entry spanname="descr">Adaptive rate control for static region.
+Valid only when H.264 and macroblock level RC is enabled (<constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant>).
+Applicable to the H264 encoder.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_ACTIVITY</constant> </entry>
+ <entry>boolean</entry>
+ </row><row><entry spanname="descr">Adaptive rate control for activity region.
+Valid only when H.264 and macroblock level RC is enabled (<constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant>).
+Applicable to the H264 encoder.</entry>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-mfc51-video-frame-skip-mode">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_FRAME_SKIP_MODE</constant> </entry>
+ <entry>enum v4l2_mpeg_mfc51_video_frame_skip_mode</entry>
+ </row>
+ <row><entry spanname="descr">
+Indicates in what conditions the encoder should skip frames. If encoding a frame would cause the encoded stream to be larger then
+a chosen data limit then the frame will be skipped.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_MFC51_FRAME_SKIP_MODE_DISABLED</constant> </entry>
+ <entry>Frame skip mode is disabled.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_MFC51_FRAME_SKIP_MODE_LEVEL_LIMIT</constant> </entry>
+ <entry>Frame skip mode enabled and buffer limit is set by the chosen level and is defined by the standard.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_MFC51_FRAME_SKIP_MODE_BUF_LIMIT</constant> </entry>
+ <entry>Frame skip mode enabled and buffer limit is set by the VBV (MPEG1/2/4) or CPB (H264) buffer size control.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_RC_FIXED_TARGET_BIT</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Enable rate-control with fixed target bit.
+If this setting is enabled, then the rate control logic of the encoder will calculate the average bitrate
+for a GOP and keep it below or equal the set bitrate target. Otherwise the rate control logic calculates the
+overall average bitrate for the stream and keeps it below or equal to the set bitrate. In the first case
+the average bitrate for the whole stream will be smaller then the set bitrate. This is caused because the
+average is calculated for smaller number of frames, on the other hand enabling this setting will ensure that
+the stream will meet tight bandwidth contraints. Applicable to encoders.
+</entry>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-mfc51-video-force-frame-type">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_FORCE_FRAME_TYPE</constant> </entry>
+ <entry>enum v4l2_mpeg_mfc51_video_force_frame_type</entry>
+ </row>
+ <row><entry spanname="descr">Force a frame type for the next queued buffer. Applicable to encoders.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_MFC51_FORCE_FRAME_TYPE_DISABLED</constant> </entry>
+ <entry>Forcing a specific frame type disabled.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_MFC51_FORCE_FRAME_TYPE_I_FRAME</constant> </entry>
+ <entry>Force an I-frame.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_MFC51_FORCE_FRAME_TYPE_NOT_CODED</constant> </entry>
+ <entry>Force a non-coded frame.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+
+ <section>
+ <title>CX2341x MPEG Controls</title>
+
+ <para>The following MPEG class controls deal with MPEG
+encoding settings that are specific to the Conexant CX23415 and
+CX23416 MPEG encoding chips.</para>
+
+ <table pgwide="1" frame="none" id="cx2341x-control-id">
+ <title>CX2341x Control IDs</title>
+ <tgroup cols="4">
+ <colspec colname="c1" colwidth="1*" />
+ <colspec colname="c2" colwidth="6*" />
+ <colspec colname="c3" colwidth="2*" />
+ <colspec colname="c4" colwidth="6*" />
+ <spanspec namest="c1" nameend="c2" spanname="id" />
+ <spanspec namest="c2" nameend="c4" spanname="descr" />
+ <thead>
+ <row>
+ <entry spanname="id" align="left">ID</entry>
+ <entry align="left">Type</entry>
+ </row><row><entry spanname="descr" align="left">Description</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-cx2341x-video-spatial-filter-mode">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE</constant> </entry>
+ <entry>enum v4l2_mpeg_cx2341x_video_spatial_filter_mode</entry>
+ </row><row><entry spanname="descr">Sets the Spatial
+Filter mode (default <constant>MANUAL</constant>). Possible values
+are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL</constant> </entry>
+ <entry>Choose the filter manually</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO</constant> </entry>
+ <entry>Choose the filter automatically</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER</constant> </entry>
+ <entry>integer (0-15)</entry>
+ </row><row><entry spanname="descr">The setting for the
+Spatial Filter. 0 = off, 15 = maximum. (Default is 0.)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row id="luma-spatial-filter-type">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE</constant> </entry>
+ <entry>enum v4l2_mpeg_cx2341x_video_luma_spatial_filter_type</entry>
+ </row><row><entry spanname="descr">Select the algorithm
+to use for the Luma Spatial Filter (default
+<constant>1D_HOR</constant>). Possible values:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_OFF</constant> </entry>
+ <entry>No filter</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_HOR</constant> </entry>
+ <entry>One-dimensional horizontal</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_VERT</constant> </entry>
+ <entry>One-dimensional vertical</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_HV_SEPARABLE</constant> </entry>
+ <entry>Two-dimensional separable</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_SYM_NON_SEPARABLE</constant> </entry>
+ <entry>Two-dimensional symmetrical
+non-separable</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row id="chroma-spatial-filter-type">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE</constant> </entry>
+ <entry>enum v4l2_mpeg_cx2341x_video_chroma_spatial_filter_type</entry>
+ </row><row><entry spanname="descr">Select the algorithm
+for the Chroma Spatial Filter (default <constant>1D_HOR</constant>).
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_OFF</constant> </entry>
+ <entry>No filter</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_1D_HOR</constant> </entry>
+ <entry>One-dimensional horizontal</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-cx2341x-video-temporal-filter-mode">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE</constant> </entry>
+ <entry>enum v4l2_mpeg_cx2341x_video_temporal_filter_mode</entry>
+ </row><row><entry spanname="descr">Sets the Temporal
+Filter mode (default <constant>MANUAL</constant>). Possible values
+are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL</constant> </entry>
+ <entry>Choose the filter manually</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_AUTO</constant> </entry>
+ <entry>Choose the filter automatically</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER</constant> </entry>
+ <entry>integer (0-31)</entry>
+ </row><row><entry spanname="descr">The setting for the
+Temporal Filter. 0 = off, 31 = maximum. (Default is 8 for full-scale
+capturing and 0 for scaled capturing.)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-cx2341x-video-median-filter-type">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE</constant> </entry>
+ <entry>enum v4l2_mpeg_cx2341x_video_median_filter_type</entry>
+ </row><row><entry spanname="descr">Median Filter Type
+(default <constant>OFF</constant>). Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF</constant> </entry>
+ <entry>No filter</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR</constant> </entry>
+ <entry>Horizontal filter</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_VERT</constant> </entry>
+ <entry>Vertical filter</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR_VERT</constant> </entry>
+ <entry>Horizontal and vertical filter</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_DIAG</constant> </entry>
+ <entry>Diagonal filter</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM</constant> </entry>
+ <entry>integer (0-255)</entry>
+ </row><row><entry spanname="descr">Threshold above which
+the luminance median filter is enabled (default 0)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP</constant> </entry>
+ <entry>integer (0-255)</entry>
+ </row><row><entry spanname="descr">Threshold below which
+the luminance median filter is enabled (default 255)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM</constant> </entry>
+ <entry>integer (0-255)</entry>
+ </row><row><entry spanname="descr">Threshold above which
+the chroma median filter is enabled (default 0)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP</constant> </entry>
+ <entry>integer (0-255)</entry>
+ </row><row><entry spanname="descr">Threshold below which
+the chroma median filter is enabled (default 255)</entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS</constant> </entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">The CX2341X MPEG encoder
+can insert one empty MPEG-2 PES packet into the stream between every
+four video frames. The packet size is 2048 bytes, including the
+packet_start_code_prefix and stream_id fields. The stream_id is 0xBF
+(private stream 2). The payload consists of 0x00 bytes, to be filled
+in by the application. 0 = do not insert, 1 = insert packets.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+ </section>
+
+ <section id="camera-controls">
+ <title>Camera Control Reference</title>
+
+ <para>The Camera class includes controls for mechanical (or
+equivalent digital) features of a device such as controllable lenses
+or sensors.</para>
+
+ <table pgwide="1" frame="none" id="camera-control-id">
+ <title>Camera Control IDs</title>
+ <tgroup cols="4">
+ <colspec colname="c1" colwidth="1*" />
+ <colspec colname="c2" colwidth="6*" />
+ <colspec colname="c3" colwidth="2*" />
+ <colspec colname="c4" colwidth="6*" />
+ <spanspec namest="c1" nameend="c2" spanname="id" />
+ <spanspec namest="c2" nameend="c4" spanname="descr" />
+ <thead>
+ <row>
+ <entry spanname="id" align="left">ID</entry>
+ <entry align="left">Type</entry>
+ </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_CAMERA_CLASS</constant> </entry>
+ <entry>class</entry>
+ </row><row><entry spanname="descr">The Camera class
+descriptor. Calling &VIDIOC-QUERYCTRL; for this control will return a
+description of this control class.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row id="v4l2-exposure-auto-type">
+ <entry spanname="id"><constant>V4L2_CID_EXPOSURE_AUTO</constant> </entry>
+ <entry>enum v4l2_exposure_auto_type</entry>
+ </row><row><entry spanname="descr">Enables automatic
+adjustments of the exposure time and/or iris aperture. The effect of
+manual changes of the exposure time or iris aperture while these
+features are enabled is undefined, drivers should ignore such
+requests. Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_EXPOSURE_AUTO</constant> </entry>
+ <entry>Automatic exposure time, automatic iris
+aperture.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_EXPOSURE_MANUAL</constant> </entry>
+ <entry>Manual exposure time, manual iris.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_EXPOSURE_SHUTTER_PRIORITY</constant> </entry>
+ <entry>Manual exposure time, auto iris.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_EXPOSURE_APERTURE_PRIORITY</constant> </entry>
+ <entry>Auto exposure time, manual iris.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_EXPOSURE_ABSOLUTE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Determines the exposure
+time of the camera sensor. The exposure time is limited by the frame
+interval. Drivers should interpret the values as 100 µs units,
+where the value 1 stands for 1/10000th of a second, 10000 for 1 second
+and 100000 for 10 seconds.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_EXPOSURE_AUTO_PRIORITY</constant> </entry>
+ <entry>boolean</entry>
+ </row><row><entry spanname="descr">When
+<constant>V4L2_CID_EXPOSURE_AUTO</constant> is set to
+<constant>AUTO</constant> or <constant>APERTURE_PRIORITY</constant>,
+this control determines if the device may dynamically vary the frame
+rate. By default this feature is disabled (0) and the frame rate must
+remain constant.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_PAN_RELATIVE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">This control turns the
+camera horizontally by the specified amount. The unit is undefined. A
+positive value moves the camera to the right (clockwise when viewed
+from above), a negative value to the left. A value of zero does not
+cause motion. This is a write-only control.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_TILT_RELATIVE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">This control turns the
+camera vertically by the specified amount. The unit is undefined. A
+positive value moves the camera up, a negative value down. A value of
+zero does not cause motion. This is a write-only control.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_PAN_RESET</constant> </entry>
+ <entry>button</entry>
+ </row><row><entry spanname="descr">When this control is set,
+the camera moves horizontally to the default position.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_TILT_RESET</constant> </entry>
+ <entry>button</entry>
+ </row><row><entry spanname="descr">When this control is set,
+the camera moves vertically to the default position.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_PAN_ABSOLUTE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">This control
+turns the camera horizontally to the specified position. Positive
+values move the camera to the right (clockwise when viewed from above),
+negative values to the left. Drivers should interpret the values as arc
+seconds, with valid values between -180 * 3600 and +180 * 3600
+inclusive.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_TILT_ABSOLUTE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">This control
+turns the camera vertically to the specified position. Positive values
+move the camera up, negative values down. Drivers should interpret the
+values as arc seconds, with valid values between -180 * 3600 and +180
+* 3600 inclusive.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FOCUS_ABSOLUTE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">This control sets the
+focal point of the camera to the specified position. The unit is
+undefined. Positive values set the focus closer to the camera,
+negative values towards infinity.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FOCUS_RELATIVE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">This control moves the
+focal point of the camera by the specified amount. The unit is
+undefined. Positive values move the focus closer to the camera,
+negative values towards infinity. This is a write-only control.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FOCUS_AUTO</constant> </entry>
+ <entry>boolean</entry>
+ </row><row><entry spanname="descr">Enables automatic focus
+adjustments. The effect of manual focus adjustments while this feature
+is enabled is undefined, drivers should ignore such requests.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_ZOOM_ABSOLUTE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Specify the objective lens
+focal length as an absolute value. The zoom unit is driver-specific and its
+value should be a positive integer.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_ZOOM_RELATIVE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Specify the objective lens
+focal length relatively to the current value. Positive values move the zoom
+lens group towards the telephoto direction, negative values towards the
+wide-angle direction. The zoom unit is driver-specific. This is a write-only control.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_ZOOM_CONTINUOUS</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Move the objective lens group
+at the specified speed until it reaches physical device limits or until an
+explicit request to stop the movement. A positive value moves the zoom lens
+group towards the telephoto direction. A value of zero stops the zoom lens
+group movement. A negative value moves the zoom lens group towards the
+wide-angle direction. The zoom speed unit is driver-specific.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_IRIS_ABSOLUTE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">This control sets the
+camera's aperture to the specified value. The unit is undefined.
+Larger values open the iris wider, smaller values close it.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_IRIS_RELATIVE</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">This control modifies the
+camera's aperture by the specified amount. The unit is undefined.
+Positive values open the iris one step further, negative values close
+it one step further. This is a write-only control.</entry>
+ </row>
+ <row><entry></entry></row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_PRIVACY</constant> </entry>
+ <entry>boolean</entry>
+ </row><row><entry spanname="descr">Prevent video from being acquired
+by the camera. When this control is set to <constant>TRUE</constant> (1), no
+image can be captured by the camera. Common means to enforce privacy are
+mechanical obturation of the sensor and firmware image processing, but the
+device is not restricted to these methods. Devices that implement the privacy
+control must support read access and may support write access.</entry>
+ </row>
+
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_BAND_STOP_FILTER</constant> </entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Switch the band-stop filter of a
+camera sensor on or off, or specify its strength. Such band-stop filters can
+be used, for example, to filter out the fluorescent light component.</entry>
+ </row>
+ <row><entry></entry></row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+
+ <section id="fm-tx-controls">
+ <title>FM Transmitter Control Reference</title>
+
+ <para>The FM Transmitter (FM_TX) class includes controls for common features of
+FM transmissions capable devices. Currently this class includes parameters for audio
+compression, pilot tone generation, audio deviation limiter, RDS transmission and
+tuning power features.</para>
+
+ <table pgwide="1" frame="none" id="fm-tx-control-id">
+ <title>FM_TX Control IDs</title>
+
+ <tgroup cols="4">
+ <colspec colname="c1" colwidth="1*" />
+ <colspec colname="c2" colwidth="6*" />
+ <colspec colname="c3" colwidth="2*" />
+ <colspec colname="c4" colwidth="6*" />
+ <spanspec namest="c1" nameend="c2" spanname="id" />
+ <spanspec namest="c2" nameend="c4" spanname="descr" />
+ <thead>
+ <row>
+ <entry spanname="id" align="left">ID</entry>
+ <entry align="left">Type</entry>
+ </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FM_TX_CLASS</constant> </entry>
+ <entry>class</entry>
+ </row><row><entry spanname="descr">The FM_TX class
+descriptor. Calling &VIDIOC-QUERYCTRL; for this control will return a
+description of this control class.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_RDS_TX_DEVIATION</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Configures RDS signal frequency deviation level in Hz.
+The range and step are driver-specific.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_RDS_TX_PI</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Sets the RDS Programme Identification field
+for transmission.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_RDS_TX_PTY</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Sets the RDS Programme Type field for transmission.
+This encodes up to 31 pre-defined programme types.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_RDS_TX_PS_NAME</constant> </entry>
+ <entry>string</entry>
+ </row>
+ <row><entry spanname="descr">Sets the Programme Service name (PS_NAME) for transmission.
+It is intended for static display on a receiver. It is the primary aid to listeners in programme service
+identification and selection. In Annex E of <xref linkend="en50067" />, the RDS specification,
+there is a full description of the correct character encoding for Programme Service name strings.
+Also from RDS specification, PS is usually a single eight character text. However, it is also possible
+to find receivers which can scroll strings sized as 8 x N characters. So, this control must be configured
+with steps of 8 characters. The result is it must always contain a string with size multiple of 8.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_RDS_TX_RADIO_TEXT</constant> </entry>
+ <entry>string</entry>
+ </row>
+ <row><entry spanname="descr">Sets the Radio Text info for transmission. It is a textual description of
+what is being broadcasted. RDS Radio Text can be applied when broadcaster wishes to transmit longer PS names,
+programme-related information or any other text. In these cases, RadioText should be used in addition to
+<constant>V4L2_CID_RDS_TX_PS_NAME</constant>. The encoding for Radio Text strings is also fully described
+in Annex E of <xref linkend="en50067" />. The length of Radio Text strings depends on which RDS Block is being
+used to transmit it, either 32 (2A block) or 64 (2B block). However, it is also possible
+to find receivers which can scroll strings sized as 32 x N or 64 x N characters. So, this control must be configured
+with steps of 32 or 64 characters. The result is it must always contain a string with size multiple of 32 or 64. </entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_AUDIO_LIMITER_ENABLED</constant> </entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Enables or disables the audio deviation limiter feature.
+The limiter is useful when trying to maximize the audio volume, minimize receiver-generated
+distortion and prevent overmodulation.
+</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_AUDIO_LIMITER_RELEASE_TIME</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Sets the audio deviation limiter feature release time.
+Unit is in useconds. Step and range are driver-specific.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_AUDIO_LIMITER_DEVIATION</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Configures audio frequency deviation level in Hz.
+The range and step are driver-specific.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_ENABLED</constant> </entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Enables or disables the audio compression feature.
+This feature amplifies signals below the threshold by a fixed gain and compresses audio
+signals above the threshold by the ratio of Threshold/(Gain + Threshold).</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_GAIN</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Sets the gain for audio compression feature. It is
+a dB value. The range and step are driver-specific.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_THRESHOLD</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Sets the threshold level for audio compression freature.
+It is a dB value. The range and step are driver-specific.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Sets the attack time for audio compression feature.
+It is a useconds value. The range and step are driver-specific.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Sets the release time for audio compression feature.
+It is a useconds value. The range and step are driver-specific.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_PILOT_TONE_ENABLED</constant> </entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Enables or disables the pilot tone generation feature.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_PILOT_TONE_DEVIATION</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Configures pilot tone frequency deviation level. Unit is
+in Hz. The range and step are driver-specific.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_PILOT_TONE_FREQUENCY</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Configures pilot tone frequency value. Unit is
+in Hz. The range and step are driver-specific.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_TUNE_PREEMPHASIS</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row id="v4l2-preemphasis"><entry spanname="descr">Configures the pre-emphasis value for broadcasting.
+A pre-emphasis filter is applied to the broadcast to accentuate the high audio frequencies.
+Depending on the region, a time constant of either 50 or 75 useconds is used. The enum v4l2_preemphasis
+defines possible values for pre-emphasis. Here they are:</entry>
+ </row><row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_PREEMPHASIS_DISABLED</constant> </entry>
+ <entry>No pre-emphasis is applied.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_PREEMPHASIS_50_uS</constant> </entry>
+ <entry>A pre-emphasis of 50 uS is used.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_PREEMPHASIS_75_uS</constant> </entry>
+ <entry>A pre-emphasis of 75 uS is used.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_TUNE_POWER_LEVEL</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Sets the output power level for signal transmission.
+Unit is in dBuV. Range and step are driver-specific.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_TUNE_ANTENNA_CAPACITOR</constant> </entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">This selects the value of antenna tuning capacitor
+manually or automatically if set to zero. Unit, range and step are driver-specific.</entry>
+ </row>
+ <row><entry></entry></row>
+ </tbody>
+ </tgroup>
+ </table>
+
+<para>For more details about RDS specification, refer to
+<xref linkend="en50067" /> document, from CENELEC.</para>
+ </section>
+
+ <section id="flash-controls">
+ <title>Flash Control Reference</title>
+
+ <note>
+ <title>Experimental</title>
+
+ <para>This is an <link linkend="experimental">experimental</link>
+interface and may change in the future.</para>
+ </note>
+
+ <para>
+ The V4L2 flash controls are intended to provide generic access
+ to flash controller devices. Flash controller devices are
+ typically used in digital cameras.
+ </para>
+
+ <para>
+ The interface can support both LED and xenon flash devices. As
+ of writing this, there is no xenon flash driver using this
+ interface.
+ </para>
+
+ <section id="flash-controls-use-cases">
+ <title>Supported use cases</title>
+
+ <section>
+ <title>Unsynchronised LED flash (software strobe)</title>
+
+ <para>
+ Unsynchronised LED flash is controlled directly by the
+ host as the sensor. The flash must be enabled by the host
+ before the exposure of the image starts and disabled once
+ it ends. The host is fully responsible for the timing of
+ the flash.
+ </para>
+
+ <para>Example of such device: Nokia N900.</para>
+ </section>
+
+ <section>
+ <title>Synchronised LED flash (hardware strobe)</title>
+
+ <para>
+ The synchronised LED flash is pre-programmed by the host
+ (power and timeout) but controlled by the sensor through a
+ strobe signal from the sensor to the flash.
+ </para>
+
+ <para>
+ The sensor controls the flash duration and timing. This
+ information typically must be made available to the
+ sensor.
+ </para>
+
+ </section>
+
+ <section>
+ <title>LED flash as torch</title>
+
+ <para>
+ LED flash may be used as torch in conjunction with another
+ use case involving camera or individually.
+ </para>
+
+ </section>
+
+ </section>
+
+ <table pgwide="1" frame="none" id="flash-control-id">
+ <title>Flash Control IDs</title>
+
+ <tgroup cols="4">
+ <colspec colname="c1" colwidth="1*" />
+ <colspec colname="c2" colwidth="6*" />
+ <colspec colname="c3" colwidth="2*" />
+ <colspec colname="c4" colwidth="6*" />
+ <spanspec namest="c1" nameend="c2" spanname="id" />
+ <spanspec namest="c2" nameend="c4" spanname="descr" />
+ <thead>
+ <row>
+ <entry spanname="id" align="left">ID</entry>
+ <entry align="left">Type</entry>
+ </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_CLASS</constant></entry>
+ <entry>class</entry>
+ </row>
+ <row>
+ <entry spanname="descr">The FLASH class descriptor.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_LED_MODE</constant></entry>
+ <entry>menu</entry>
+ </row>
+ <row id="v4l2-flash-led-mode">
+ <entry spanname="descr">Defines the mode of the flash LED,
+ the high-power white LED attached to the flash controller.
+ Setting this control may not be possible in presence of
+ some faults. See V4L2_CID_FLASH_FAULT.</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_FLASH_LED_MODE_NONE</constant></entry>
+ <entry>Off.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_LED_MODE_FLASH</constant></entry>
+ <entry>Flash mode.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_LED_MODE_TORCH</constant></entry>
+ <entry>Torch mode. See V4L2_CID_FLASH_TORCH_INTENSITY.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_SOURCE</constant></entry>
+ <entry>menu</entry>
+ </row>
+ <row id="v4l2-flash-strobe-source"><entry
+ spanname="descr">Defines the source of the flash LED
+ strobe.</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_FLASH_STROBE_SOURCE_SOFTWARE</constant></entry>
+ <entry>The flash strobe is triggered by using
+ the V4L2_CID_FLASH_STROBE control.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_STROBE_SOURCE_EXTERNAL</constant></entry>
+ <entry>The flash strobe is triggered by an
+ external source. Typically this is a sensor,
+ which makes it possible to synchronises the
+ flash strobe start to exposure start.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE</constant></entry>
+ <entry>button</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Strobe flash. Valid when
+ V4L2_CID_FLASH_LED_MODE is set to
+ V4L2_FLASH_LED_MODE_FLASH and V4L2_CID_FLASH_STROBE_SOURCE
+ is set to V4L2_FLASH_STROBE_SOURCE_SOFTWARE. Setting this
+ control may not be possible in presence of some faults.
+ See V4L2_CID_FLASH_FAULT.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STOP</constant></entry>
+ <entry>button</entry>
+ </row>
+ <row><entry spanname="descr">Stop flash strobe immediately.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STATUS</constant></entry>
+ <entry>boolean</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Strobe status: whether the flash
+ is strobing at the moment or not. This is a read-only
+ control.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_TIMEOUT</constant></entry>
+ <entry>integer</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Hardware timeout for flash. The
+ flash strobe is stopped after this period of time has
+ passed from the start of the strobe.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_INTENSITY</constant></entry>
+ <entry>integer</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Intensity of the flash strobe when
+ the flash LED is in flash mode
+ (V4L2_FLASH_LED_MODE_FLASH). The unit should be milliamps
+ (mA) if possible.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_TORCH_INTENSITY</constant></entry>
+ <entry>integer</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Intensity of the flash LED in
+ torch mode (V4L2_FLASH_LED_MODE_TORCH). The unit should be
+ milliamps (mA) if possible. Setting this control may not
+ be possible in presence of some faults. See
+ V4L2_CID_FLASH_FAULT.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_INDICATOR_INTENSITY</constant></entry>
+ <entry>integer</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Intensity of the indicator LED.
+ The indicator LED may be fully independent of the flash
+ LED. The unit should be microamps (uA) if possible.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_FAULT</constant></entry>
+ <entry>bitmask</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Faults related to the flash. The
+ faults tell about specific problems in the flash chip
+ itself or the LEDs attached to it. Faults may prevent
+ further use of some of the flash controls. In particular,
+ V4L2_CID_FLASH_LED_MODE is set to V4L2_FLASH_LED_MODE_NONE
+ if the fault affects the flash LED. Exactly which faults
+ have such an effect is chip dependent. Reading the faults
+ resets the control and returns the chip to a usable state
+ if possible.</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_FLASH_FAULT_OVER_VOLTAGE</constant></entry>
+ <entry>Flash controller voltage to the flash LED
+ has exceeded the limit specific to the flash
+ controller.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_FAULT_TIMEOUT</constant></entry>
+ <entry>The flash strobe was still on when
+ the timeout set by the user ---
+ V4L2_CID_FLASH_TIMEOUT control --- has expired.
+ Not all flash controllers may set this in all
+ such conditions.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_FAULT_OVER_TEMPERATURE</constant></entry>
+ <entry>The flash controller has overheated.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_FAULT_SHORT_CIRCUIT</constant></entry>
+ <entry>The short circuit protection of the flash
+ controller has been triggered.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_CHARGE</constant></entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Enable or disable charging of the xenon
+ flash capacitor.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_READY</constant></entry>
+ <entry>boolean</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Is the flash ready to strobe?
+ Xenon flashes require their capacitors charged before
+ strobing. LED flashes often require a cooldown period
+ after strobe during which another strobe will not be
+ possible. This is a read-only control.</entry>
+ </row>
+ <row><entry></entry></row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ </section>
+</section>
+
+ <!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "common.sgml"
+indent-tabs-mode: nil
+End:
+ -->
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+ <title>Event Interface</title>
+
+ <para>The V4L2 event interface provides a means for a user to get
+ immediately notified on certain conditions taking place on a device.
+ This might include start of frame or loss of signal events, for
+ example. Changes in the value or state of a V4L2 control can also be
+ reported through events.
+ </para>
+
+ <para>To receive events, the events the user is interested in first must
+ be subscribed using the &VIDIOC-SUBSCRIBE-EVENT; ioctl. Once an event is
+ subscribed, the events of subscribed types are dequeueable using the
+ &VIDIOC-DQEVENT; ioctl. Events may be unsubscribed using
+ VIDIOC_UNSUBSCRIBE_EVENT ioctl. The special event type V4L2_EVENT_ALL may
+ be used to unsubscribe all the events the driver supports.</para>
+
+ <para>The event subscriptions and event queues are specific to file
+ handles. Subscribing an event on one file handle does not affect
+ other file handles.</para>
+
+ <para>The information on dequeueable events is obtained by using select or
+ poll system calls on video devices. The V4L2 events use POLLPRI events on
+ poll system call and exceptions on select system call.</para>
+
+ <para>Starting with kernel 3.1 certain guarantees can be given with
+ regards to events:<orderedlist>
+ <listitem>
+ <para>Each subscribed event has its own internal dedicated event queue.
+This means that flooding of one event type will not interfere with other
+event types.</para>
+ </listitem>
+ <listitem>
+ <para>If the internal event queue for a particular subscribed event
+becomes full, then the oldest event in that queue will be dropped.</para>
+ </listitem>
+ <listitem>
+ <para>Where applicable, certain event types can ensure that the payload
+of the oldest event that is about to be dropped will be merged with the payload
+of the next oldest event. Thus ensuring that no information is lost, but only an
+intermediate step leading up to that information. See the documentation for the
+event you want to subscribe to whether this is applicable for that event or not.</para>
+ </listitem>
+ </orderedlist></para>
+
+ <!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "v4l2.sgml"
+indent-tabs-mode: nil
+End:
+ -->
diff --git a/Documentation/DocBook/v4l/dev-osd.xml b/Documentation/DocBook/media/v4l/dev-osd.xml
similarity index 100%
rename from Documentation/DocBook/v4l/dev-osd.xml
rename to Documentation/DocBook/media/v4l/dev-osd.xml
diff --git a/Documentation/DocBook/v4l/dev-output.xml b/Documentation/DocBook/media/v4l/dev-output.xml
similarity index 100%
rename from Documentation/DocBook/v4l/dev-output.xml
rename to Documentation/DocBook/media/v4l/dev-output.xml
diff --git a/Documentation/DocBook/v4l/dev-overlay.xml b/Documentation/DocBook/media/v4l/dev-overlay.xml
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rename from Documentation/DocBook/v4l/dev-overlay.xml
rename to Documentation/DocBook/media/v4l/dev-overlay.xml
diff --git a/Documentation/DocBook/v4l/dev-radio.xml b/Documentation/DocBook/media/v4l/dev-radio.xml
similarity index 100%
rename from Documentation/DocBook/v4l/dev-radio.xml
rename to Documentation/DocBook/media/v4l/dev-radio.xml
diff --git a/Documentation/DocBook/v4l/dev-raw-vbi.xml b/Documentation/DocBook/media/v4l/dev-raw-vbi.xml
similarity index 100%
rename from Documentation/DocBook/v4l/dev-raw-vbi.xml
rename to Documentation/DocBook/media/v4l/dev-raw-vbi.xml
diff --git a/Documentation/DocBook/v4l/dev-rds.xml b/Documentation/DocBook/media/v4l/dev-rds.xml
similarity index 100%
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rename to Documentation/DocBook/media/v4l/dev-rds.xml
diff --git a/Documentation/DocBook/v4l/dev-sliced-vbi.xml b/Documentation/DocBook/media/v4l/dev-sliced-vbi.xml
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diff --git a/Documentation/DocBook/media/v4l/dev-subdev.xml b/Documentation/DocBook/media/v4l/dev-subdev.xml
new file mode 100644
index 0000000..0916a73
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/dev-subdev.xml
@@ -0,0 +1,313 @@
+ <title>Sub-device Interface</title>
+
+ <note>
+ <title>Experimental</title>
+ <para>This is an <link linkend="experimental">experimental</link>
+ interface and may change in the future.</para>
+ </note>
+
+ <para>The complex nature of V4L2 devices, where hardware is often made of
+ several integrated circuits that need to interact with each other in a
+ controlled way, leads to complex V4L2 drivers. The drivers usually reflect
+ the hardware model in software, and model the different hardware components
+ as software blocks called sub-devices.</para>
+
+ <para>V4L2 sub-devices are usually kernel-only objects. If the V4L2 driver
+ implements the media device API, they will automatically inherit from media
+ entities. Applications will be able to enumerate the sub-devices and discover
+ the hardware topology using the media entities, pads and links enumeration
+ API.</para>
+
+ <para>In addition to make sub-devices discoverable, drivers can also choose
+ to make them directly configurable by applications. When both the sub-device
+ driver and the V4L2 device driver support this, sub-devices will feature a
+ character device node on which ioctls can be called to
+ <itemizedlist>
+ <listitem><para>query, read and write sub-devices controls</para></listitem>
+ <listitem><para>subscribe and unsubscribe to events and retrieve them</para></listitem>
+ <listitem><para>negotiate image formats on individual pads</para></listitem>
+ </itemizedlist>
+ </para>
+
+ <para>Sub-device character device nodes, conventionally named
+ <filename>/dev/v4l-subdev*</filename>, use major number 81.</para>
+
+ <section>
+ <title>Controls</title>
+ <para>Most V4L2 controls are implemented by sub-device hardware. Drivers
+ usually merge all controls and expose them through video device nodes.
+ Applications can control all sub-devices through a single interface.</para>
+
+ <para>Complex devices sometimes implement the same control in different
+ pieces of hardware. This situation is common in embedded platforms, where
+ both sensors and image processing hardware implement identical functions,
+ such as contrast adjustment, white balance or faulty pixels correction. As
+ the V4L2 controls API doesn't support several identical controls in a single
+ device, all but one of the identical controls are hidden.</para>
+
+ <para>Applications can access those hidden controls through the sub-device
+ node with the V4L2 control API described in <xref linkend="control" />. The
+ ioctls behave identically as when issued on V4L2 device nodes, with the
+ exception that they deal only with controls implemented in the sub-device.
+ </para>
+
+ <para>Depending on the driver, those controls might also be exposed through
+ one (or several) V4L2 device nodes.</para>
+ </section>
+
+ <section>
+ <title>Events</title>
+ <para>V4L2 sub-devices can notify applications of events as described in
+ <xref linkend="event" />. The API behaves identically as when used on V4L2
+ device nodes, with the exception that it only deals with events generated by
+ the sub-device. Depending on the driver, those events might also be reported
+ on one (or several) V4L2 device nodes.</para>
+ </section>
+
+ <section id="pad-level-formats">
+ <title>Pad-level Formats</title>
+
+ <warning><para>Pad-level formats are only applicable to very complex device that
+ need to expose low-level format configuration to user space. Generic V4L2
+ applications do <emphasis>not</emphasis> need to use the API described in
+ this section.</para></warning>
+
+ <note><para>For the purpose of this section, the term
+ <wordasword>format</wordasword> means the combination of media bus data
+ format, frame width and frame height.</para></note>
+
+ <para>Image formats are typically negotiated on video capture and output
+ devices using the <link linkend="crop">cropping and scaling</link> ioctls.
+ The driver is responsible for configuring every block in the video pipeline
+ according to the requested format at the pipeline input and/or
+ output.</para>
+
+ <para>For complex devices, such as often found in embedded systems,
+ identical image sizes at the output of a pipeline can be achieved using
+ different hardware configurations. One such example is shown on
+ <xref linkend="pipeline-scaling" />, where
+ image scaling can be performed on both the video sensor and the host image
+ processing hardware.</para>
+
+ <figure id="pipeline-scaling">
+ <title>Image Format Negotiation on Pipelines</title>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="pipeline.pdf" format="PS" />
+ </imageobject>
+ <imageobject>
+ <imagedata fileref="pipeline.png" format="PNG" />
+ </imageobject>
+ <textobject>
+ <phrase>High quality and high speed pipeline configuration</phrase>
+ </textobject>
+ </mediaobject>
+ </figure>
+
+ <para>The sensor scaler is usually of less quality than the host scaler, but
+ scaling on the sensor is required to achieve higher frame rates. Depending
+ on the use case (quality vs. speed), the pipeline must be configured
+ differently. Applications need to configure the formats at every point in
+ the pipeline explicitly.</para>
+
+ <para>Drivers that implement the <link linkend="media-controller-intro">media
+ API</link> can expose pad-level image format configuration to applications.
+ When they do, applications can use the &VIDIOC-SUBDEV-G-FMT; and
+ &VIDIOC-SUBDEV-S-FMT; ioctls. to negotiate formats on a per-pad basis.</para>
+
+ <para>Applications are responsible for configuring coherent parameters on
+ the whole pipeline and making sure that connected pads have compatible
+ formats. The pipeline is checked for formats mismatch at &VIDIOC-STREAMON;
+ time, and an &EPIPE; is then returned if the configuration is
+ invalid.</para>
+
+ <para>Pad-level image format configuration support can be tested by calling
+ the &VIDIOC-SUBDEV-G-FMT; ioctl on pad 0. If the driver returns an &EINVAL;
+ pad-level format configuration is not supported by the sub-device.</para>
+
+ <section>
+ <title>Format Negotiation</title>
+
+ <para>Acceptable formats on pads can (and usually do) depend on a number
+ of external parameters, such as formats on other pads, active links, or
+ even controls. Finding a combination of formats on all pads in a video
+ pipeline, acceptable to both application and driver, can't rely on formats
+ enumeration only. A format negotiation mechanism is required.</para>
+
+ <para>Central to the format negotiation mechanism are the get/set format
+ operations. When called with the <structfield>which</structfield> argument
+ set to <constant>V4L2_SUBDEV_FORMAT_TRY</constant>, the
+ &VIDIOC-SUBDEV-G-FMT; and &VIDIOC-SUBDEV-S-FMT; ioctls operate on a set of
+ formats parameters that are not connected to the hardware configuration.
+ Modifying those 'try' formats leaves the device state untouched (this
+ applies to both the software state stored in the driver and the hardware
+ state stored in the device itself).</para>
+
+ <para>While not kept as part of the device state, try formats are stored
+ in the sub-device file handles. A &VIDIOC-SUBDEV-G-FMT; call will return
+ the last try format set <emphasis>on the same sub-device file
+ handle</emphasis>. Several applications querying the same sub-device at
+ the same time will thus not interact with each other.</para>
+
+ <para>To find out whether a particular format is supported by the device,
+ applications use the &VIDIOC-SUBDEV-S-FMT; ioctl. Drivers verify and, if
+ needed, change the requested <structfield>format</structfield> based on
+ device requirements and return the possibly modified value. Applications
+ can then choose to try a different format or accept the returned value and
+ continue.</para>
+
+ <para>Formats returned by the driver during a negotiation iteration are
+ guaranteed to be supported by the device. In particular, drivers guarantee
+ that a returned format will not be further changed if passed to an
+ &VIDIOC-SUBDEV-S-FMT; call as-is (as long as external parameters, such as
+ formats on other pads or links' configuration are not changed).</para>
+
+ <para>Drivers automatically propagate formats inside sub-devices. When a
+ try or active format is set on a pad, corresponding formats on other pads
+ of the same sub-device can be modified by the driver. Drivers are free to
+ modify formats as required by the device. However, they should comply with
+ the following rules when possible:
+ <itemizedlist>
+ <listitem><para>Formats should be propagated from sink pads to source pads.
+ Modifying a format on a source pad should not modify the format on any
+ sink pad.</para></listitem>
+ <listitem><para>Sub-devices that scale frames using variable scaling factors
+ should reset the scale factors to default values when sink pads formats
+ are modified. If the 1:1 scaling ratio is supported, this means that
+ source pads formats should be reset to the sink pads formats.</para></listitem>
+ </itemizedlist>
+ </para>
+
+ <para>Formats are not propagated across links, as that would involve
+ propagating them from one sub-device file handle to another. Applications
+ must then take care to configure both ends of every link explicitly with
+ compatible formats. Identical formats on the two ends of a link are
+ guaranteed to be compatible. Drivers are free to accept different formats
+ matching device requirements as being compatible.</para>
+
+ <para><xref linkend="sample-pipeline-config" />
+ shows a sample configuration sequence for the pipeline described in
+ <xref linkend="pipeline-scaling" /> (table
+ columns list entity names and pad numbers).</para>
+
+ <table pgwide="0" frame="none" id="sample-pipeline-config">
+ <title>Sample Pipeline Configuration</title>
+ <tgroup cols="3">
+ <colspec colname="what"/>
+ <colspec colname="sensor-0" />
+ <colspec colname="frontend-0" />
+ <colspec colname="frontend-1" />
+ <colspec colname="scaler-0" />
+ <colspec colname="scaler-1" />
+ <thead>
+ <row>
+ <entry></entry>
+ <entry>Sensor/0</entry>
+ <entry>Frontend/0</entry>
+ <entry>Frontend/1</entry>
+ <entry>Scaler/0</entry>
+ <entry>Scaler/1</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry>Initial state</entry>
+ <entry>2048x1536</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ </row>
+ <row>
+ <entry>Configure frontend input</entry>
+ <entry>2048x1536</entry>
+ <entry><emphasis>2048x1536</emphasis></entry>
+ <entry><emphasis>2046x1534</emphasis></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ </row>
+ <row>
+ <entry>Configure scaler input</entry>
+ <entry>2048x1536</entry>
+ <entry>2048x1536</entry>
+ <entry>2046x1534</entry>
+ <entry><emphasis>2046x1534</emphasis></entry>
+ <entry><emphasis>2046x1534</emphasis></entry>
+ </row>
+ <row>
+ <entry>Configure scaler output</entry>
+ <entry>2048x1536</entry>
+ <entry>2048x1536</entry>
+ <entry>2046x1534</entry>
+ <entry>2046x1534</entry>
+ <entry><emphasis>1280x960</emphasis></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <para>
+ <orderedlist>
+ <listitem><para>Initial state. The sensor output is set to its native 3MP
+ resolution. Resolutions on the host frontend and scaler input and output
+ pads are undefined.</para></listitem>
+ <listitem><para>The application configures the frontend input pad resolution to
+ 2048x1536. The driver propagates the format to the frontend output pad.
+ Note that the propagated output format can be different, as in this case,
+ than the input format, as the hardware might need to crop pixels (for
+ instance when converting a Bayer filter pattern to RGB or YUV).</para></listitem>
+ <listitem><para>The application configures the scaler input pad resolution to
+ 2046x1534 to match the frontend output resolution. The driver propagates
+ the format to the scaler output pad.</para></listitem>
+ <listitem><para>The application configures the scaler output pad resolution to
+ 1280x960.</para></listitem>
+ </orderedlist>
+ </para>
+
+ <para>When satisfied with the try results, applications can set the active
+ formats by setting the <structfield>which</structfield> argument to
+ <constant>V4L2_SUBDEV_FORMAT_ACTIVE</constant>. Active formats are changed
+ exactly as try formats by drivers. To avoid modifying the hardware state
+ during format negotiation, applications should negotiate try formats first
+ and then modify the active settings using the try formats returned during
+ the last negotiation iteration. This guarantees that the active format
+ will be applied as-is by the driver without being modified.
+ </para>
+ </section>
+
+ <section>
+ <title>Cropping and scaling</title>
+
+ <para>Many sub-devices support cropping frames on their input or output
+ pads (or possible even on both). Cropping is used to select the area of
+ interest in an image, typically on a video sensor or video decoder. It can
+ also be used as part of digital zoom implementations to select the area of
+ the image that will be scaled up.</para>
+
+ <para>Crop settings are defined by a crop rectangle and represented in a
+ &v4l2-rect; by the coordinates of the top left corner and the rectangle
+ size. Both the coordinates and sizes are expressed in pixels.</para>
+
+ <para>The crop rectangle is retrieved and set using the
+ &VIDIOC-SUBDEV-G-CROP; and &VIDIOC-SUBDEV-S-CROP; ioctls. Like for pad
+ formats, drivers store try and active crop rectangles. The format
+ negotiation mechanism applies to crop settings as well.</para>
+
+ <para>On input pads, cropping is applied relatively to the current pad
+ format. The pad format represents the image size as received by the
+ sub-device from the previous block in the pipeline, and the crop rectangle
+ represents the sub-image that will be transmitted further inside the
+ sub-device for processing. The crop rectangle be entirely containted
+ inside the input image size.</para>
+
+ <para>Input crop rectangle are reset to their default value when the input
+ image format is modified. Drivers should use the input image size as the
+ crop rectangle default value, but hardware requirements may prevent this.
+ </para>
+
+ <para>Cropping behaviour on output pads is not defined.</para>
+
+ </section>
+ </section>
+
+ &sub-subdev-formats;
diff --git a/Documentation/DocBook/v4l/dev-teletext.xml b/Documentation/DocBook/media/v4l/dev-teletext.xml
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diff --git a/Documentation/DocBook/media/v4l/func-ioctl.xml b/Documentation/DocBook/media/v4l/func-ioctl.xml
new file mode 100644
index 0000000..2de64be
--- /dev/null
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@@ -0,0 +1,79 @@
+<refentry id="func-ioctl">
+ <refmeta>
+ <refentrytitle>V4L2 ioctl()</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>v4l2-ioctl</refname>
+ <refpurpose>Program a V4L2 device</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcsynopsisinfo>#include <sys/ioctl.h></funcsynopsisinfo>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>void *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>V4L2 ioctl request code as defined in the <filename>videodev2.h</filename> header file, for example
+VIDIOC_QUERYCAP.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para>Pointer to a function parameter, usually a structure.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>The <function>ioctl()</function> function is used to program
+V4L2 devices. The argument <parameter>fd</parameter> must be an open
+file descriptor. An ioctl <parameter>request</parameter> has encoded
+in it whether the argument is an input, output or read/write
+parameter, and the size of the argument <parameter>argp</parameter> in
+bytes. Macros and defines specifying V4L2 ioctl requests are located
+in the <filename>videodev2.h</filename> header file.
+Applications should use their own copy, not include the version in the
+kernel sources on the system they compile on. All V4L2 ioctl requests,
+their respective function and parameters are specified in <xref
+ linkend="user-func" />.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ <para>When an ioctl that takes an output or read/write parameter fails,
+ the parameter remains unmodified.</para>
+ </refsect1>
+</refentry>
+
+<!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "v4l2.sgml"
+indent-tabs-mode: nil
+End:
+-->
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diff --git a/Documentation/DocBook/media/v4l/gen-errors.xml b/Documentation/DocBook/media/v4l/gen-errors.xml
new file mode 100644
index 0000000..5bbf3ce
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+<title>Generic Error Codes</title>
+
+<table frame="none" pgwide="1" id="gen-errors">
+ <title>Generic error codes</title>
+ <tgroup cols="2">
+ &cs-str;
+ <tbody valign="top">
+ <!-- Keep it ordered alphabetically -->
+ <row>
+ <entry>EBADF</entry>
+ <entry>The file descriptor is not a valid.</entry>
+ </row>
+ <row>
+ <entry>EBUSY</entry>
+ <entry>The ioctl can't be handled because the device is busy. This is
+ typically return while device is streaming, and an ioctl tried to
+ change something that would affect the stream, or would require the
+ usage of a hardware resource that was already allocated. The ioctl
+ must not be retried without performing another action to fix the
+ problem first (typically: stop the stream before retrying).</entry>
+ </row>
+ <row>
+ <entry>EFAULT</entry>
+ <entry>There was a failure while copying data from/to userspace,
+ probably caused by an invalid pointer reference.</entry>
+ </row>
+ <row>
+ <entry>EINVAL</entry>
+ <entry>One or more of the ioctl parameters are invalid or out of the
+ allowed range. This is a widely used error code. See the individual
+ ioctl requests for specific causes.</entry>
+ </row>
+ <row>
+ <entry>ENODEV</entry>
+ <entry>Device not found or was removed.</entry>
+ </row>
+ <row>
+ <entry>ENOMEM</entry>
+ <entry>There's not enough memory to handle the desired operation.</entry>
+ </row>
+ <row>
+ <entry>ENOTTY</entry>
+ <entry>The ioctl is not supported by the driver, actually meaning that
+ the required functionality is not available, or the file
+ descriptor is not for a media device.</entry>
+ </row>
+ <row>
+ <entry>ENOSPC</entry>
+ <entry>On USB devices, the stream ioctl's can return this error, meaning
+ that this request would overcommit the usb bandwidth reserved
+ for periodic transfers (up to 80% of the USB bandwidth).</entry>
+ </row>
+ <row>
+ <entry>ENOSYS or EOPNOTSUPP</entry>
+ <entry>Function not available for this device (dvb API only. Will likely
+ be replaced anytime soon by ENOTTY).</entry>
+ </row>
+ <row>
+ <entry>EPERM</entry>
+ <entry>Permission denied. Can be returned if the device needs write
+ permission, or some special capabilities is needed
+ (e. g. root)</entry>
+ </row>
+ <row>
+ <entry>EWOULDBLOCK</entry>
+ <entry>Operation would block. Used when the ioctl would need to wait
+ for an event, but the device was opened in non-blocking mode.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
+
+<para>Note 1: ioctls may return other error codes. Since errors may have side
+effects such as a driver reset, applications should abort on unexpected errors.
+</para>
+
+<para>Note 2: Request-specific error codes are listed in the individual
+requests descriptions.</para>
diff --git a/Documentation/DocBook/media/v4l/io.xml b/Documentation/DocBook/media/v4l/io.xml
new file mode 100644
index 0000000..3f47df1
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/io.xml
@@ -0,0 +1,1292 @@
+ <title>Input/Output</title>
+
+ <para>The V4L2 API defines several different methods to read from or
+write to a device. All drivers exchanging data with applications must
+support at least one of them.</para>
+
+ <para>The classic I/O method using the <function>read()</function>
+and <function>write()</function> function is automatically selected
+after opening a V4L2 device. When the driver does not support this
+method attempts to read or write will fail at any time.</para>
+
+ <para>Other methods must be negotiated. To select the streaming I/O
+method with memory mapped or user buffers applications call the
+&VIDIOC-REQBUFS; ioctl. The asynchronous I/O method is not defined
+yet.</para>
+
+ <para>Video overlay can be considered another I/O method, although
+the application does not directly receive the image data. It is
+selected by initiating video overlay with the &VIDIOC-S-FMT; ioctl.
+For more information see <xref linkend="overlay" />.</para>
+
+ <para>Generally exactly one I/O method, including overlay, is
+associated with each file descriptor. The only exceptions are
+applications not exchanging data with a driver ("panel applications",
+see <xref linkend="open" />) and drivers permitting simultaneous video capturing
+and overlay using the same file descriptor, for compatibility with V4L
+and earlier versions of V4L2.</para>
+
+ <para><constant>VIDIOC_S_FMT</constant> and
+<constant>VIDIOC_REQBUFS</constant> would permit this to some degree,
+but for simplicity drivers need not support switching the I/O method
+(after first switching away from read/write) other than by closing
+and reopening the device.</para>
+
+ <para>The following sections describe the various I/O methods in
+more detail.</para>
+
+ <section id="rw">
+ <title>Read/Write</title>
+
+ <para>Input and output devices support the
+<function>read()</function> and <function>write()</function> function,
+respectively, when the <constant>V4L2_CAP_READWRITE</constant> flag in
+the <structfield>capabilities</structfield> field of &v4l2-capability;
+returned by the &VIDIOC-QUERYCAP; ioctl is set.</para>
+
+ <para>Drivers may need the CPU to copy the data, but they may also
+support DMA to or from user memory, so this I/O method is not
+necessarily less efficient than other methods merely exchanging buffer
+pointers. It is considered inferior though because no meta-information
+like frame counters or timestamps are passed. This information is
+necessary to recognize frame dropping and to synchronize with other
+data streams. However this is also the simplest I/O method, requiring
+little or no setup to exchange data. It permits command line stunts
+like this (the <application>vidctrl</application> tool is
+fictitious):</para>
+
+ <informalexample>
+ <screen>
+> vidctrl /dev/video --input=0 --format=YUYV --size=352x288
+> dd if=/dev/video of=myimage.422 bs=202752 count=1
+</screen>
+ </informalexample>
+
+ <para>To read from the device applications use the
+&func-read; function, to write the &func-write; function.
+Drivers must implement one I/O method if they
+exchange data with applications, but it need not be this.<footnote>
+ <para>It would be desirable if applications could depend on
+drivers supporting all I/O interfaces, but as much as the complex
+memory mapping I/O can be inadequate for some devices we have no
+reason to require this interface, which is most useful for simple
+applications capturing still images.</para>
+ </footnote> When reading or writing is supported, the driver
+must also support the &func-select; and &func-poll;
+function.<footnote>
+ <para>At the driver level <function>select()</function> and
+<function>poll()</function> are the same, and
+<function>select()</function> is too important to be optional.</para>
+ </footnote></para>
+ </section>
+
+ <section id="mmap">
+ <title>Streaming I/O (Memory Mapping)</title>
+
+ <para>Input and output devices support this I/O method when the
+<constant>V4L2_CAP_STREAMING</constant> flag in the
+<structfield>capabilities</structfield> field of &v4l2-capability;
+returned by the &VIDIOC-QUERYCAP; ioctl is set. There are two
+streaming methods, to determine if the memory mapping flavor is
+supported applications must call the &VIDIOC-REQBUFS; ioctl.</para>
+
+ <para>Streaming is an I/O method where only pointers to buffers
+are exchanged between application and driver, the data itself is not
+copied. Memory mapping is primarily intended to map buffers in device
+memory into the application's address space. Device memory can be for
+example the video memory on a graphics card with a video capture
+add-on. However, being the most efficient I/O method available for a
+long time, many other drivers support streaming as well, allocating
+buffers in DMA-able main memory.</para>
+
+ <para>A driver can support many sets of buffers. Each set is
+identified by a unique buffer type value. The sets are independent and
+each set can hold a different type of data. To access different sets
+at the same time different file descriptors must be used.<footnote>
+ <para>One could use one file descriptor and set the buffer
+type field accordingly when calling &VIDIOC-QBUF; etc., but it makes
+the <function>select()</function> function ambiguous. We also like the
+clean approach of one file descriptor per logical stream. Video
+overlay for example is also a logical stream, although the CPU is not
+needed for continuous operation.</para>
+ </footnote></para>
+
+ <para>To allocate device buffers applications call the
+&VIDIOC-REQBUFS; ioctl with the desired number of buffers and buffer
+type, for example <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>.
+This ioctl can also be used to change the number of buffers or to free
+the allocated memory, provided none of the buffers are still
+mapped.</para>
+
+ <para>Before applications can access the buffers they must map
+them into their address space with the &func-mmap; function. The
+location of the buffers in device memory can be determined with the
+&VIDIOC-QUERYBUF; ioctl. In the single-planar API case, the
+<structfield>m.offset</structfield> and <structfield>length</structfield>
+returned in a &v4l2-buffer; are passed as sixth and second parameter to the
+<function>mmap()</function> function. When using the multi-planar API,
+struct &v4l2-buffer; contains an array of &v4l2-plane; structures, each
+containing its own <structfield>m.offset</structfield> and
+<structfield>length</structfield>. When using the multi-planar API, every
+plane of every buffer has to be mapped separately, so the number of
+calls to &func-mmap; should be equal to number of buffers times number of
+planes in each buffer. The offset and length values must not be modified.
+Remember, the buffers are allocated in physical memory, as opposed to virtual
+memory, which can be swapped out to disk. Applications should free the buffers
+as soon as possible with the &func-munmap; function.</para>
+
+ <example>
+ <title>Mapping buffers in the single-planar API</title>
+ <programlisting>
+&v4l2-requestbuffers; reqbuf;
+struct {
+ void *start;
+ size_t length;
+} *buffers;
+unsigned int i;
+
+memset(&reqbuf, 0, sizeof(reqbuf));
+reqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+reqbuf.memory = V4L2_MEMORY_MMAP;
+reqbuf.count = 20;
+
+if (-1 == ioctl (fd, &VIDIOC-REQBUFS;, &reqbuf)) {
+ if (errno == EINVAL)
+ printf("Video capturing or mmap-streaming is not supported\n");
+ else
+ perror("VIDIOC_REQBUFS");
+
+ exit(EXIT_FAILURE);
+}
+
+/* We want at least five buffers. */
+
+if (reqbuf.count < 5) {
+ /* You may need to free the buffers here. */
+ printf("Not enough buffer memory\n");
+ exit(EXIT_FAILURE);
+}
+
+buffers = calloc(reqbuf.count, sizeof(*buffers));
+assert(buffers != NULL);
+
+for (i = 0; i < reqbuf.count; i++) {
+ &v4l2-buffer; buffer;
+
+ memset(&buffer, 0, sizeof(buffer));
+ buffer.type = reqbuf.type;
+ buffer.memory = V4L2_MEMORY_MMAP;
+ buffer.index = i;
+
+ if (-1 == ioctl (fd, &VIDIOC-QUERYBUF;, &buffer)) {
+ perror("VIDIOC_QUERYBUF");
+ exit(EXIT_FAILURE);
+ }
+
+ buffers[i].length = buffer.length; /* remember for munmap() */
+
+ buffers[i].start = mmap(NULL, buffer.length,
+ PROT_READ | PROT_WRITE, /* recommended */
+ MAP_SHARED, /* recommended */
+ fd, buffer.m.offset);
+
+ if (MAP_FAILED == buffers[i].start) {
+ /* If you do not exit here you should unmap() and free()
+ the buffers mapped so far. */
+ perror("mmap");
+ exit(EXIT_FAILURE);
+ }
+}
+
+/* Cleanup. */
+
+for (i = 0; i < reqbuf.count; i++)
+ munmap(buffers[i].start, buffers[i].length);
+ </programlisting>
+ </example>
+
+ <example>
+ <title>Mapping buffers in the multi-planar API</title>
+ <programlisting>
+&v4l2-requestbuffers; reqbuf;
+/* Our current format uses 3 planes per buffer */
+#define FMT_NUM_PLANES = 3
+
+struct {
+ void *start[FMT_NUM_PLANES];
+ size_t length[FMT_NUM_PLANES];
+} *buffers;
+unsigned int i, j;
+
+memset(&reqbuf, 0, sizeof(reqbuf));
+reqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+reqbuf.memory = V4L2_MEMORY_MMAP;
+reqbuf.count = 20;
+
+if (ioctl(fd, &VIDIOC-REQBUFS;, &reqbuf) < 0) {
+ if (errno == EINVAL)
+ printf("Video capturing or mmap-streaming is not supported\n");
+ else
+ perror("VIDIOC_REQBUFS");
+
+ exit(EXIT_FAILURE);
+}
+
+/* We want at least five buffers. */
+
+if (reqbuf.count < 5) {
+ /* You may need to free the buffers here. */
+ printf("Not enough buffer memory\n");
+ exit(EXIT_FAILURE);
+}
+
+buffers = calloc(reqbuf.count, sizeof(*buffers));
+assert(buffers != NULL);
+
+for (i = 0; i < reqbuf.count; i++) {
+ &v4l2-buffer; buffer;
+ &v4l2-plane; planes[FMT_NUM_PLANES];
+
+ memset(&buffer, 0, sizeof(buffer));
+ buffer.type = reqbuf.type;
+ buffer.memory = V4L2_MEMORY_MMAP;
+ buffer.index = i;
+ /* length in struct v4l2_buffer in multi-planar API stores the size
+ * of planes array. */
+ buffer.length = FMT_NUM_PLANES;
+ buffer.m.planes = planes;
+
+ if (ioctl(fd, &VIDIOC-QUERYBUF;, &buffer) < 0) {
+ perror("VIDIOC_QUERYBUF");
+ exit(EXIT_FAILURE);
+ }
+
+ /* Every plane has to be mapped separately */
+ for (j = 0; j < FMT_NUM_PLANES; j++) {
+ buffers[i].length[j] = buffer.m.planes[j].length; /* remember for munmap() */
+
+ buffers[i].start[j] = mmap(NULL, buffer.m.planes[j].length,
+ PROT_READ | PROT_WRITE, /* recommended */
+ MAP_SHARED, /* recommended */
+ fd, buffer.m.planes[j].m.offset);
+
+ if (MAP_FAILED == buffers[i].start[j]) {
+ /* If you do not exit here you should unmap() and free()
+ the buffers and planes mapped so far. */
+ perror("mmap");
+ exit(EXIT_FAILURE);
+ }
+ }
+}
+
+/* Cleanup. */
+
+for (i = 0; i < reqbuf.count; i++)
+ for (j = 0; j < FMT_NUM_PLANES; j++)
+ munmap(buffers[i].start[j], buffers[i].length[j]);
+ </programlisting>
+ </example>
+
+ <para>Conceptually streaming drivers maintain two buffer queues, an incoming
+and an outgoing queue. They separate the synchronous capture or output
+operation locked to a video clock from the application which is
+subject to random disk or network delays and preemption by
+other processes, thereby reducing the probability of data loss.
+The queues are organized as FIFOs, buffers will be
+output in the order enqueued in the incoming FIFO, and were
+captured in the order dequeued from the outgoing FIFO.</para>
+
+ <para>The driver may require a minimum number of buffers enqueued
+at all times to function, apart of this no limit exists on the number
+of buffers applications can enqueue in advance, or dequeue and
+process. They can also enqueue in a different order than buffers have
+been dequeued, and the driver can <emphasis>fill</emphasis> enqueued
+<emphasis>empty</emphasis> buffers in any order. <footnote>
+ <para>Random enqueue order permits applications processing
+images out of order (such as video codecs) to return buffers earlier,
+reducing the probability of data loss. Random fill order allows
+drivers to reuse buffers on a LIFO-basis, taking advantage of caches
+holding scatter-gather lists and the like.</para>
+ </footnote> The index number of a buffer (&v4l2-buffer;
+<structfield>index</structfield>) plays no role here, it only
+identifies the buffer.</para>
+
+ <para>Initially all mapped buffers are in dequeued state,
+inaccessible by the driver. For capturing applications it is customary
+to first enqueue all mapped buffers, then to start capturing and enter
+the read loop. Here the application waits until a filled buffer can be
+dequeued, and re-enqueues the buffer when the data is no longer
+needed. Output applications fill and enqueue buffers, when enough
+buffers are stacked up the output is started with
+<constant>VIDIOC_STREAMON</constant>. In the write loop, when
+the application runs out of free buffers, it must wait until an empty
+buffer can be dequeued and reused.</para>
+
+ <para>To enqueue and dequeue a buffer applications use the
+&VIDIOC-QBUF; and &VIDIOC-DQBUF; ioctl. The status of a buffer being
+mapped, enqueued, full or empty can be determined at any time using the
+&VIDIOC-QUERYBUF; ioctl. Two methods exist to suspend execution of the
+application until one or more buffers can be dequeued. By default
+<constant>VIDIOC_DQBUF</constant> blocks when no buffer is in the
+outgoing queue. When the <constant>O_NONBLOCK</constant> flag was
+given to the &func-open; function, <constant>VIDIOC_DQBUF</constant>
+returns immediately with an &EAGAIN; when no buffer is available. The
+&func-select; or &func-poll; function are always available.</para>
+
+ <para>To start and stop capturing or output applications call the
+&VIDIOC-STREAMON; and &VIDIOC-STREAMOFF; ioctl. Note
+<constant>VIDIOC_STREAMOFF</constant> removes all buffers from both
+queues as a side effect. Since there is no notion of doing anything
+"now" on a multitasking system, if an application needs to synchronize
+with another event it should examine the &v4l2-buffer;
+<structfield>timestamp</structfield> of captured buffers, or set the
+field before enqueuing buffers for output.</para>
+
+ <para>Drivers implementing memory mapping I/O must
+support the <constant>VIDIOC_REQBUFS</constant>,
+<constant>VIDIOC_QUERYBUF</constant>,
+<constant>VIDIOC_QBUF</constant>, <constant>VIDIOC_DQBUF</constant>,
+<constant>VIDIOC_STREAMON</constant> and
+<constant>VIDIOC_STREAMOFF</constant> ioctl, the
+<function>mmap()</function>, <function>munmap()</function>,
+<function>select()</function> and <function>poll()</function>
+function.<footnote>
+ <para>At the driver level <function>select()</function> and
+<function>poll()</function> are the same, and
+<function>select()</function> is too important to be optional. The
+rest should be evident.</para>
+ </footnote></para>
+
+ <para>[capture example]</para>
+
+ </section>
+
+ <section id="userp">
+ <title>Streaming I/O (User Pointers)</title>
+
+ <para>Input and output devices support this I/O method when the
+<constant>V4L2_CAP_STREAMING</constant> flag in the
+<structfield>capabilities</structfield> field of &v4l2-capability;
+returned by the &VIDIOC-QUERYCAP; ioctl is set. If the particular user
+pointer method (not only memory mapping) is supported must be
+determined by calling the &VIDIOC-REQBUFS; ioctl.</para>
+
+ <para>This I/O method combines advantages of the read/write and
+memory mapping methods. Buffers (planes) are allocated by the application
+itself, and can reside for example in virtual or shared memory. Only
+pointers to data are exchanged, these pointers and meta-information
+are passed in &v4l2-buffer; (or in &v4l2-plane; in the multi-planar API case).
+The driver must be switched into user pointer I/O mode by calling the
+&VIDIOC-REQBUFS; with the desired buffer type. No buffers (planes) are allocated
+beforehand, consequently they are not indexed and cannot be queried like mapped
+buffers with the <constant>VIDIOC_QUERYBUF</constant> ioctl.</para>
+
+ <example>
+ <title>Initiating streaming I/O with user pointers</title>
+
+ <programlisting>
+&v4l2-requestbuffers; reqbuf;
+
+memset (&reqbuf, 0, sizeof (reqbuf));
+reqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+reqbuf.memory = V4L2_MEMORY_USERPTR;
+
+if (ioctl (fd, &VIDIOC-REQBUFS;, &reqbuf) == -1) {
+ if (errno == EINVAL)
+ printf ("Video capturing or user pointer streaming is not supported\n");
+ else
+ perror ("VIDIOC_REQBUFS");
+
+ exit (EXIT_FAILURE);
+}
+ </programlisting>
+ </example>
+
+ <para>Buffer (plane) addresses and sizes are passed on the fly with the
+&VIDIOC-QBUF; ioctl. Although buffers are commonly cycled,
+applications can pass different addresses and sizes at each
+<constant>VIDIOC_QBUF</constant> call. If required by the hardware the
+driver swaps memory pages within physical memory to create a
+continuous area of memory. This happens transparently to the
+application in the virtual memory subsystem of the kernel. When buffer
+pages have been swapped out to disk they are brought back and finally
+locked in physical memory for DMA.<footnote>
+ <para>We expect that frequently used buffers are typically not
+swapped out. Anyway, the process of swapping, locking or generating
+scatter-gather lists may be time consuming. The delay can be masked by
+the depth of the incoming buffer queue, and perhaps by maintaining
+caches assuming a buffer will be soon enqueued again. On the other
+hand, to optimize memory usage drivers can limit the number of buffers
+locked in advance and recycle the most recently used buffers first. Of
+course, the pages of empty buffers in the incoming queue need not be
+saved to disk. Output buffers must be saved on the incoming and
+outgoing queue because an application may share them with other
+processes.</para>
+ </footnote></para>
+
+ <para>Filled or displayed buffers are dequeued with the
+&VIDIOC-DQBUF; ioctl. The driver can unlock the memory pages at any
+time between the completion of the DMA and this ioctl. The memory is
+also unlocked when &VIDIOC-STREAMOFF; is called, &VIDIOC-REQBUFS;, or
+when the device is closed. Applications must take care not to free
+buffers without dequeuing. For once, the buffers remain locked until
+further, wasting physical memory. Second the driver will not be
+notified when the memory is returned to the application's free list
+and subsequently reused for other purposes, possibly completing the
+requested DMA and overwriting valuable data.</para>
+
+ <para>For capturing applications it is customary to enqueue a
+number of empty buffers, to start capturing and enter the read loop.
+Here the application waits until a filled buffer can be dequeued, and
+re-enqueues the buffer when the data is no longer needed. Output
+applications fill and enqueue buffers, when enough buffers are stacked
+up output is started. In the write loop, when the application
+runs out of free buffers it must wait until an empty buffer can be
+dequeued and reused. Two methods exist to suspend execution of the
+application until one or more buffers can be dequeued. By default
+<constant>VIDIOC_DQBUF</constant> blocks when no buffer is in the
+outgoing queue. When the <constant>O_NONBLOCK</constant> flag was
+given to the &func-open; function, <constant>VIDIOC_DQBUF</constant>
+returns immediately with an &EAGAIN; when no buffer is available. The
+&func-select; or &func-poll; function are always available.</para>
+
+ <para>To start and stop capturing or output applications call the
+&VIDIOC-STREAMON; and &VIDIOC-STREAMOFF; ioctl. Note
+<constant>VIDIOC_STREAMOFF</constant> removes all buffers from both
+queues and unlocks all buffers as a side effect. Since there is no
+notion of doing anything "now" on a multitasking system, if an
+application needs to synchronize with another event it should examine
+the &v4l2-buffer; <structfield>timestamp</structfield> of captured
+buffers, or set the field before enqueuing buffers for output.</para>
+
+ <para>Drivers implementing user pointer I/O must
+support the <constant>VIDIOC_REQBUFS</constant>,
+<constant>VIDIOC_QBUF</constant>, <constant>VIDIOC_DQBUF</constant>,
+<constant>VIDIOC_STREAMON</constant> and
+<constant>VIDIOC_STREAMOFF</constant> ioctl, the
+<function>select()</function> and <function>poll()</function> function.<footnote>
+ <para>At the driver level <function>select()</function> and
+<function>poll()</function> are the same, and
+<function>select()</function> is too important to be optional. The
+rest should be evident.</para>
+ </footnote></para>
+ </section>
+
+ <section id="async">
+ <title>Asynchronous I/O</title>
+
+ <para>This method is not defined yet.</para>
+ </section>
+
+ <section id="buffer">
+ <title>Buffers</title>
+
+ <para>A buffer contains data exchanged by application and
+driver using one of the Streaming I/O methods. In the multi-planar API, the
+data is held in planes, while the buffer structure acts as a container
+for the planes. Only pointers to buffers (planes) are exchanged, the data
+itself is not copied. These pointers, together with meta-information like
+timestamps or field parity, are stored in a struct
+<structname>v4l2_buffer</structname>, argument to
+the &VIDIOC-QUERYBUF;, &VIDIOC-QBUF; and &VIDIOC-DQBUF; ioctl.
+In the multi-planar API, some plane-specific members of struct
+<structname>v4l2_buffer</structname>, such as pointers and sizes for each
+plane, are stored in struct <structname>v4l2_plane</structname> instead.
+In that case, struct <structname>v4l2_buffer</structname> contains an array of
+plane structures.</para>
+
+ <para>Nominally timestamps refer to the first data byte transmitted.
+In practice however the wide range of hardware covered by the V4L2 API
+limits timestamp accuracy. Often an interrupt routine will
+sample the system clock shortly after the field or frame was stored
+completely in memory. So applications must expect a constant
+difference up to one field or frame period plus a small (few scan
+lines) random error. The delay and error can be much
+larger due to compression or transmission over an external bus when
+the frames are not properly stamped by the sender. This is frequently
+the case with USB cameras. Here timestamps refer to the instant the
+field or frame was received by the driver, not the capture time. These
+devices identify by not enumerating any video standards, see <xref
+linkend="standard" />.</para>
+
+ <para>Similar limitations apply to output timestamps. Typically
+the video hardware locks to a clock controlling the video timing, the
+horizontal and vertical synchronization pulses. At some point in the
+line sequence, possibly the vertical blanking, an interrupt routine
+samples the system clock, compares against the timestamp and programs
+the hardware to repeat the previous field or frame, or to display the
+buffer contents.</para>
+
+ <para>Apart of limitations of the video device and natural
+inaccuracies of all clocks, it should be noted system time itself is
+not perfectly stable. It can be affected by power saving cycles,
+warped to insert leap seconds, or even turned back or forth by the
+system administrator affecting long term measurements. <footnote>
+ <para>Since no other Linux multimedia
+API supports unadjusted time it would be foolish to introduce here. We
+must use a universally supported clock to synchronize different media,
+hence time of day.</para>
+ </footnote></para>
+
+ <table frame="none" pgwide="1" id="v4l2-buffer">
+ <title>struct <structname>v4l2_buffer</structname></title>
+ <tgroup cols="4">
+ &cs-ustr;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>index</structfield></entry>
+ <entry></entry>
+ <entry>Number of the buffer, set by the application. This
+field is only used for <link linkend="mmap">memory mapping</link> I/O
+and can range from zero to the number of buffers allocated
+with the &VIDIOC-REQBUFS; ioctl (&v4l2-requestbuffers; <structfield>count</structfield>) minus one.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-buf-type;</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry></entry>
+ <entry>Type of the buffer, same as &v4l2-format;
+<structfield>type</structfield> or &v4l2-requestbuffers;
+<structfield>type</structfield>, set by the application.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>bytesused</structfield></entry>
+ <entry></entry>
+ <entry>The number of bytes occupied by the data in the
+buffer. It depends on the negotiated data format and may change with
+each buffer for compressed variable size data like JPEG images.
+Drivers must set this field when <structfield>type</structfield>
+refers to an input stream, applications when an output stream.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>flags</structfield></entry>
+ <entry></entry>
+ <entry>Flags set by the application or driver, see <xref
+linkend="buffer-flags" />.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-field;</entry>
+ <entry><structfield>field</structfield></entry>
+ <entry></entry>
+ <entry>Indicates the field order of the image in the
+buffer, see <xref linkend="v4l2-field" />. This field is not used when
+the buffer contains VBI data. Drivers must set it when
+<structfield>type</structfield> refers to an input stream,
+applications when an output stream.</entry>
+ </row>
+ <row>
+ <entry>struct timeval</entry>
+ <entry><structfield>timestamp</structfield></entry>
+ <entry></entry>
+ <entry><para>For input streams this is the
+system time (as returned by the <function>gettimeofday()</function>
+function) when the first data byte was captured. For output streams
+the data will not be displayed before this time, secondary to the
+nominal frame rate determined by the current video standard in
+enqueued order. Applications can for example zero this field to
+display frames as soon as possible. The driver stores the time at
+which the first data byte was actually sent out in the
+<structfield>timestamp</structfield> field. This permits
+applications to monitor the drift between the video and system
+clock.</para></entry>
+ </row>
+ <row>
+ <entry>&v4l2-timecode;</entry>
+ <entry><structfield>timecode</structfield></entry>
+ <entry></entry>
+ <entry>When <structfield>type</structfield> is
+<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant> and the
+<constant>V4L2_BUF_FLAG_TIMECODE</constant> flag is set in
+<structfield>flags</structfield>, this structure contains a frame
+timecode. In <link linkend="v4l2-field">V4L2_FIELD_ALTERNATE</link>
+mode the top and bottom field contain the same timecode.
+Timecodes are intended to help video editing and are typically recorded on
+video tapes, but also embedded in compressed formats like MPEG. This
+field is independent of the <structfield>timestamp</structfield> and
+<structfield>sequence</structfield> fields.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>sequence</structfield></entry>
+ <entry></entry>
+ <entry>Set by the driver, counting the frames in the
+sequence.</entry>
+ </row>
+ <row>
+ <entry spanname="hspan"><para>In <link
+linkend="v4l2-field">V4L2_FIELD_ALTERNATE</link> mode the top and
+bottom field have the same sequence number. The count starts at zero
+and includes dropped or repeated frames. A dropped frame was received
+by an input device but could not be stored due to lack of free buffer
+space. A repeated frame was displayed again by an output device
+because the application did not pass new data in
+time.</para><para>Note this may count the frames received
+e.g. over USB, without taking into account the frames dropped by the
+remote hardware due to limited compression throughput or bus
+bandwidth. These devices identify by not enumerating any video
+standards, see <xref linkend="standard" />.</para></entry>
+ </row>
+ <row>
+ <entry>&v4l2-memory;</entry>
+ <entry><structfield>memory</structfield></entry>
+ <entry></entry>
+ <entry>This field must be set by applications and/or drivers
+in accordance with the selected I/O method.</entry>
+ </row>
+ <row>
+ <entry>union</entry>
+ <entry><structfield>m</structfield></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u32</entry>
+ <entry><structfield>offset</structfield></entry>
+ <entry>For the single-planar API and when
+<structfield>memory</structfield> is <constant>V4L2_MEMORY_MMAP</constant> this
+is the offset of the buffer from the start of the device memory. The value is
+returned by the driver and apart of serving as parameter to the &func-mmap;
+function not useful for applications. See <xref linkend="mmap" /> for details
+ </entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>unsigned long</entry>
+ <entry><structfield>userptr</structfield></entry>
+ <entry>For the single-planar API and when
+<structfield>memory</structfield> is <constant>V4L2_MEMORY_USERPTR</constant>
+this is a pointer to the buffer (casted to unsigned long type) in virtual
+memory, set by the application. See <xref linkend="userp" /> for details.
+ </entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>struct v4l2_plane</entry>
+ <entry><structfield>*planes</structfield></entry>
+ <entry>When using the multi-planar API, contains a userspace pointer
+ to an array of &v4l2-plane;. The size of the array should be put
+ in the <structfield>length</structfield> field of this
+ <structname>v4l2_buffer</structname> structure.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>length</structfield></entry>
+ <entry></entry>
+ <entry>Size of the buffer (not the payload) in bytes for the
+ single-planar API. For the multi-planar API should contain the
+ number of elements in the <structfield>planes</structfield> array.
+ </entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>input</structfield></entry>
+ <entry></entry>
+ <entry>Some video capture drivers support rapid and
+synchronous video input changes, a function useful for example in
+video surveillance applications. For this purpose applications set the
+<constant>V4L2_BUF_FLAG_INPUT</constant> flag, and this field to the
+number of a video input as in &v4l2-input; field
+<structfield>index</structfield>.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield></entry>
+ <entry></entry>
+ <entry>A place holder for future extensions and custom
+(driver defined) buffer types
+<constant>V4L2_BUF_TYPE_PRIVATE</constant> and higher. Applications
+should set this to 0.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table frame="none" pgwide="1" id="v4l2-plane">
+ <title>struct <structname>v4l2_plane</structname></title>
+ <tgroup cols="4">
+ &cs-ustr;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>bytesused</structfield></entry>
+ <entry></entry>
+ <entry>The number of bytes occupied by data in the plane
+ (its payload).</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>length</structfield></entry>
+ <entry></entry>
+ <entry>Size in bytes of the plane (not its payload).</entry>
+ </row>
+ <row>
+ <entry>union</entry>
+ <entry><structfield>m</structfield></entry>
+ <entry></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u32</entry>
+ <entry><structfield>mem_offset</structfield></entry>
+ <entry>When the memory type in the containing &v4l2-buffer; is
+ <constant>V4L2_MEMORY_MMAP</constant>, this is the value that
+ should be passed to &func-mmap;, similar to the
+ <structfield>offset</structfield> field in &v4l2-buffer;.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__unsigned long</entry>
+ <entry><structfield>userptr</structfield></entry>
+ <entry>When the memory type in the containing &v4l2-buffer; is
+ <constant>V4L2_MEMORY_USERPTR</constant>, this is a userspace
+ pointer to the memory allocated for this plane by an application.
+ </entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>data_offset</structfield></entry>
+ <entry></entry>
+ <entry>Offset in bytes to video data in the plane, if applicable.
+ </entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved[11]</structfield></entry>
+ <entry></entry>
+ <entry>Reserved for future use. Should be zeroed by an
+ application.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table frame="none" pgwide="1" id="v4l2-buf-type">
+ <title>enum v4l2_buf_type</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant></entry>
+ <entry>1</entry>
+ <entry>Buffer of a single-planar video capture stream, see <xref
+ linkend="capture" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant>
+ </entry>
+ <entry>9</entry>
+ <entry>Buffer of a multi-planar video capture stream, see <xref
+ linkend="capture" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant></entry>
+ <entry>2</entry>
+ <entry>Buffer of a single-planar video output stream, see <xref
+ linkend="output" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant>
+ </entry>
+ <entry>10</entry>
+ <entry>Buffer of a multi-planar video output stream, see <xref
+ linkend="output" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant></entry>
+ <entry>3</entry>
+ <entry>Buffer for video overlay, see <xref linkend="overlay" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_VBI_CAPTURE</constant></entry>
+ <entry>4</entry>
+ <entry>Buffer of a raw VBI capture stream, see <xref
+ linkend="raw-vbi" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_VBI_OUTPUT</constant></entry>
+ <entry>5</entry>
+ <entry>Buffer of a raw VBI output stream, see <xref
+ linkend="raw-vbi" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_SLICED_VBI_CAPTURE</constant></entry>
+ <entry>6</entry>
+ <entry>Buffer of a sliced VBI capture stream, see <xref
+ linkend="sliced" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_SLICED_VBI_OUTPUT</constant></entry>
+ <entry>7</entry>
+ <entry>Buffer of a sliced VBI output stream, see <xref
+ linkend="sliced" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY</constant></entry>
+ <entry>8</entry>
+ <entry>Buffer for video output overlay (OSD), see <xref
+ linkend="osd" />. Status: <link
+linkend="experimental">Experimental</link>.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_TYPE_PRIVATE</constant></entry>
+ <entry>0x80</entry>
+ <entry>This and higher values are reserved for custom
+(driver defined) buffer types.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table frame="none" pgwide="1" id="buffer-flags">
+ <title>Buffer Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_BUF_FLAG_MAPPED</constant></entry>
+ <entry>0x0001</entry>
+ <entry>The buffer resides in device memory and has been mapped
+into the application's address space, see <xref linkend="mmap" /> for details.
+Drivers set or clear this flag when the
+<link linkend="vidioc-querybuf">VIDIOC_QUERYBUF</link>, <link
+ linkend="vidioc-qbuf">VIDIOC_QBUF</link> or <link
+ linkend="vidioc-qbuf">VIDIOC_DQBUF</link> ioctl is called. Set by the driver.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_FLAG_QUEUED</constant></entry>
+ <entry>0x0002</entry>
+ <entry>Internally drivers maintain two buffer queues, an
+incoming and outgoing queue. When this flag is set, the buffer is
+currently on the incoming queue. It automatically moves to the
+outgoing queue after the buffer has been filled (capture devices) or
+displayed (output devices). Drivers set or clear this flag when the
+<constant>VIDIOC_QUERYBUF</constant> ioctl is called. After
+(successful) calling the <constant>VIDIOC_QBUF </constant>ioctl it is
+always set and after <constant>VIDIOC_DQBUF</constant> always
+cleared.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_FLAG_DONE</constant></entry>
+ <entry>0x0004</entry>
+ <entry>When this flag is set, the buffer is currently on
+the outgoing queue, ready to be dequeued from the driver. Drivers set
+or clear this flag when the <constant>VIDIOC_QUERYBUF</constant> ioctl
+is called. After calling the <constant>VIDIOC_QBUF</constant> or
+<constant>VIDIOC_DQBUF</constant> it is always cleared. Of course a
+buffer cannot be on both queues at the same time, the
+<constant>V4L2_BUF_FLAG_QUEUED</constant> and
+<constant>V4L2_BUF_FLAG_DONE</constant> flag are mutually exclusive.
+They can be both cleared however, then the buffer is in "dequeued"
+state, in the application domain to say so.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_FLAG_ERROR</constant></entry>
+ <entry>0x0040</entry>
+ <entry>When this flag is set, the buffer has been dequeued
+ successfully, although the data might have been corrupted.
+ This is recoverable, streaming may continue as normal and
+ the buffer may be reused normally.
+ Drivers set this flag when the <constant>VIDIOC_DQBUF</constant>
+ ioctl is called.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_FLAG_KEYFRAME</constant></entry>
+ <entry>0x0008</entry>
+ <entry>Drivers set or clear this flag when calling the
+<constant>VIDIOC_DQBUF</constant> ioctl. It may be set by video
+capture devices when the buffer contains a compressed image which is a
+key frame (or field), &ie; can be decompressed on its own.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_FLAG_PFRAME</constant></entry>
+ <entry>0x0010</entry>
+ <entry>Similar to <constant>V4L2_BUF_FLAG_KEYFRAME</constant>
+this flags predicted frames or fields which contain only differences to a
+previous key frame.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_FLAG_BFRAME</constant></entry>
+ <entry>0x0020</entry>
+ <entry>Similar to <constant>V4L2_BUF_FLAG_PFRAME</constant>
+ this is a bidirectional predicted frame or field. [ooc tbd]</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_FLAG_TIMECODE</constant></entry>
+ <entry>0x0100</entry>
+ <entry>The <structfield>timecode</structfield> field is valid.
+Drivers set or clear this flag when the <constant>VIDIOC_DQBUF</constant>
+ioctl is called.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_FLAG_INPUT</constant></entry>
+ <entry>0x0200</entry>
+ <entry>The <structfield>input</structfield> field is valid.
+Applications set or clear this flag before calling the
+<constant>VIDIOC_QBUF</constant> ioctl.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_FLAG_PREPARED</constant></entry>
+ <entry>0x0400</entry>
+ <entry>The buffer has been prepared for I/O and can be queued by the
+application. Drivers set or clear this flag when the
+<link linkend="vidioc-querybuf">VIDIOC_QUERYBUF</link>, <link
+ linkend="vidioc-qbuf">VIDIOC_PREPARE_BUF</link>, <link
+ linkend="vidioc-qbuf">VIDIOC_QBUF</link> or <link
+ linkend="vidioc-qbuf">VIDIOC_DQBUF</link> ioctl is called.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_FLAG_NO_CACHE_INVALIDATE</constant></entry>
+ <entry>0x0400</entry>
+ <entry>Caches do not have to be invalidated for this buffer.
+Typically applications shall use this flag if the data captured in the buffer
+is not going to be touched by the CPU, instead the buffer will, probably, be
+passed on to a DMA-capable hardware unit for further processing or output.
+</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BUF_FLAG_NO_CACHE_CLEAN</constant></entry>
+ <entry>0x0800</entry>
+ <entry>Caches do not have to be cleaned for this buffer.
+Typically applications shall use this flag for output buffers if the data
+in this buffer has not been created by the CPU but by some DMA-capable unit,
+in which case caches have not been used.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-memory">
+ <title>enum v4l2_memory</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MEMORY_MMAP</constant></entry>
+ <entry>1</entry>
+ <entry>The buffer is used for <link linkend="mmap">memory
+mapping</link> I/O.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MEMORY_USERPTR</constant></entry>
+ <entry>2</entry>
+ <entry>The buffer is used for <link linkend="userp">user
+pointer</link> I/O.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MEMORY_OVERLAY</constant></entry>
+ <entry>3</entry>
+ <entry>[to do]</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <section>
+ <title>Timecodes</title>
+
+ <para>The <structname>v4l2_timecode</structname> structure is
+designed to hold a <xref linkend="smpte12m" /> or similar timecode.
+(struct <structname>timeval</structname> timestamps are stored in
+&v4l2-buffer; field <structfield>timestamp</structfield>.)</para>
+
+ <table frame="none" pgwide="1" id="v4l2-timecode">
+ <title>struct <structname>v4l2_timecode</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry>Frame rate the timecodes are based on, see <xref
+ linkend="timecode-type" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>flags</structfield></entry>
+ <entry>Timecode flags, see <xref linkend="timecode-flags" />.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>frames</structfield></entry>
+ <entry>Frame count, 0 ... 23/24/29/49/59, depending on the
+ type of timecode.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>seconds</structfield></entry>
+ <entry>Seconds count, 0 ... 59. This is a binary, not BCD number.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>minutes</structfield></entry>
+ <entry>Minutes count, 0 ... 59. This is a binary, not BCD number.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>hours</structfield></entry>
+ <entry>Hours count, 0 ... 29. This is a binary, not BCD number.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>userbits</structfield>[4]</entry>
+ <entry>The "user group" bits from the timecode.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table frame="none" pgwide="1" id="timecode-type">
+ <title>Timecode Types</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_TC_TYPE_24FPS</constant></entry>
+ <entry>1</entry>
+ <entry>24 frames per second, i. e. film.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_TC_TYPE_25FPS</constant></entry>
+ <entry>2</entry>
+ <entry>25 frames per second, &ie; PAL or SECAM video.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_TC_TYPE_30FPS</constant></entry>
+ <entry>3</entry>
+ <entry>30 frames per second, &ie; NTSC video.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_TC_TYPE_50FPS</constant></entry>
+ <entry>4</entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_TC_TYPE_60FPS</constant></entry>
+ <entry>5</entry>
+ <entry></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table frame="none" pgwide="1" id="timecode-flags">
+ <title>Timecode Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_TC_FLAG_DROPFRAME</constant></entry>
+ <entry>0x0001</entry>
+ <entry>Indicates "drop frame" semantics for counting frames
+in 29.97 fps material. When set, frame numbers 0 and 1 at the start of
+each minute, except minutes 0, 10, 20, 30, 40, 50 are omitted from the
+count.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_TC_FLAG_COLORFRAME</constant></entry>
+ <entry>0x0002</entry>
+ <entry>The "color frame" flag.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_TC_USERBITS_field</constant></entry>
+ <entry>0x000C</entry>
+ <entry>Field mask for the "binary group flags".</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_TC_USERBITS_USERDEFINED</constant></entry>
+ <entry>0x0000</entry>
+ <entry>Unspecified format.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_TC_USERBITS_8BITCHARS</constant></entry>
+ <entry>0x0008</entry>
+ <entry>8-bit ISO characters.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+ </section>
+
+ <section id="field-order">
+ <title>Field Order</title>
+
+ <para>We have to distinguish between progressive and interlaced
+video. Progressive video transmits all lines of a video image
+sequentially. Interlaced video divides an image into two fields,
+containing only the odd and even lines of the image, respectively.
+Alternating the so called odd and even field are transmitted, and due
+to a small delay between fields a cathode ray TV displays the lines
+interleaved, yielding the original frame. This curious technique was
+invented because at refresh rates similar to film the image would
+fade out too quickly. Transmitting fields reduces the flicker without
+the necessity of doubling the frame rate and with it the bandwidth
+required for each channel.</para>
+
+ <para>It is important to understand a video camera does not expose
+one frame at a time, merely transmitting the frames separated into
+fields. The fields are in fact captured at two different instances in
+time. An object on screen may well move between one field and the
+next. For applications analysing motion it is of paramount importance
+to recognize which field of a frame is older, the <emphasis>temporal
+order</emphasis>.</para>
+
+ <para>When the driver provides or accepts images field by field
+rather than interleaved, it is also important applications understand
+how the fields combine to frames. We distinguish between top (aka odd) and
+bottom (aka even) fields, the <emphasis>spatial order</emphasis>: The first line
+of the top field is the first line of an interlaced frame, the first
+line of the bottom field is the second line of that frame.</para>
+
+ <para>However because fields were captured one after the other,
+arguing whether a frame commences with the top or bottom field is
+pointless. Any two successive top and bottom, or bottom and top fields
+yield a valid frame. Only when the source was progressive to begin
+with, ⪚ when transferring film to video, two fields may come from
+the same frame, creating a natural order.</para>
+
+ <para>Counter to intuition the top field is not necessarily the
+older field. Whether the older field contains the top or bottom lines
+is a convention determined by the video standard. Hence the
+distinction between temporal and spatial order of fields. The diagrams
+below should make this clearer.</para>
+
+ <para>All video capture and output devices must report the current
+field order. Some drivers may permit the selection of a different
+order, to this end applications initialize the
+<structfield>field</structfield> field of &v4l2-pix-format; before
+calling the &VIDIOC-S-FMT; ioctl. If this is not desired it should
+have the value <constant>V4L2_FIELD_ANY</constant> (0).</para>
+
+ <table frame="none" pgwide="1" id="v4l2-field">
+ <title>enum v4l2_field</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_FIELD_ANY</constant></entry>
+ <entry>0</entry>
+ <entry>Applications request this field order when any
+one of the <constant>V4L2_FIELD_NONE</constant>,
+<constant>V4L2_FIELD_TOP</constant>,
+<constant>V4L2_FIELD_BOTTOM</constant>, or
+<constant>V4L2_FIELD_INTERLACED</constant> formats is acceptable.
+Drivers choose depending on hardware capabilities or e. g. the
+requested image size, and return the actual field order. &v4l2-buffer;
+<structfield>field</structfield> can never be
+<constant>V4L2_FIELD_ANY</constant>.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FIELD_NONE</constant></entry>
+ <entry>1</entry>
+ <entry>Images are in progressive format, not interlaced.
+The driver may also indicate this order when it cannot distinguish
+between <constant>V4L2_FIELD_TOP</constant> and
+<constant>V4L2_FIELD_BOTTOM</constant>.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FIELD_TOP</constant></entry>
+ <entry>2</entry>
+ <entry>Images consist of the top (aka odd) field only.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FIELD_BOTTOM</constant></entry>
+ <entry>3</entry>
+ <entry>Images consist of the bottom (aka even) field only.
+Applications may wish to prevent a device from capturing interlaced
+images because they will have "comb" or "feathering" artefacts around
+moving objects.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FIELD_INTERLACED</constant></entry>
+ <entry>4</entry>
+ <entry>Images contain both fields, interleaved line by
+line. The temporal order of the fields (whether the top or bottom
+field is first transmitted) depends on the current video standard.
+M/NTSC transmits the bottom field first, all other standards the top
+field first.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FIELD_SEQ_TB</constant></entry>
+ <entry>5</entry>
+ <entry>Images contain both fields, the top field lines
+are stored first in memory, immediately followed by the bottom field
+lines. Fields are always stored in temporal order, the older one first
+in memory. Image sizes refer to the frame, not fields.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FIELD_SEQ_BT</constant></entry>
+ <entry>6</entry>
+ <entry>Images contain both fields, the bottom field
+lines are stored first in memory, immediately followed by the top
+field lines. Fields are always stored in temporal order, the older one
+first in memory. Image sizes refer to the frame, not fields.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FIELD_ALTERNATE</constant></entry>
+ <entry>7</entry>
+ <entry>The two fields of a frame are passed in separate
+buffers, in temporal order, &ie; the older one first. To indicate the field
+parity (whether the current field is a top or bottom field) the driver
+or application, depending on data direction, must set &v4l2-buffer;
+<structfield>field</structfield> to
+<constant>V4L2_FIELD_TOP</constant> or
+<constant>V4L2_FIELD_BOTTOM</constant>. Any two successive fields pair
+to build a frame. If fields are successive, without any dropped fields
+between them (fields can drop individually), can be determined from
+the &v4l2-buffer; <structfield>sequence</structfield> field. Image
+sizes refer to the frame, not fields. This format cannot be selected
+when using the read/write I/O method.<!-- Where it's indistinguishable
+from V4L2_FIELD_SEQ_*. --></entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FIELD_INTERLACED_TB</constant></entry>
+ <entry>8</entry>
+ <entry>Images contain both fields, interleaved line by
+line, top field first. The top field is transmitted first.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FIELD_INTERLACED_BT</constant></entry>
+ <entry>9</entry>
+ <entry>Images contain both fields, interleaved line by
+line, top field first. The bottom field is transmitted first.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <figure id="fieldseq-tb">
+ <title>Field Order, Top Field First Transmitted</title>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="fieldseq_tb.pdf" format="PS" />
+ </imageobject>
+ <imageobject>
+ <imagedata fileref="fieldseq_tb.gif" format="GIF" />
+ </imageobject>
+ </mediaobject>
+ </figure>
+
+ <figure id="fieldseq-bt">
+ <title>Field Order, Bottom Field First Transmitted</title>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="fieldseq_bt.pdf" format="PS" />
+ </imageobject>
+ <imageobject>
+ <imagedata fileref="fieldseq_bt.gif" format="GIF" />
+ </imageobject>
+ </mediaobject>
+ </figure>
+ </section>
+
+ <!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "v4l2.sgml"
+indent-tabs-mode: nil
+End:
+ -->
diff --git a/Documentation/DocBook/v4l/keytable.c.xml b/Documentation/DocBook/media/v4l/keytable.c.xml
similarity index 100%
rename from Documentation/DocBook/v4l/keytable.c.xml
rename to Documentation/DocBook/media/v4l/keytable.c.xml
diff --git a/Documentation/DocBook/v4l/libv4l.xml b/Documentation/DocBook/media/v4l/libv4l.xml
similarity index 100%
rename from Documentation/DocBook/v4l/libv4l.xml
rename to Documentation/DocBook/media/v4l/libv4l.xml
diff --git a/Documentation/DocBook/media/v4l/lirc_device_interface.xml b/Documentation/DocBook/media/v4l/lirc_device_interface.xml
new file mode 100644
index 0000000..8d7eb6b
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/lirc_device_interface.xml
@@ -0,0 +1,253 @@
+<section id="lirc_dev">
+<title>LIRC Device Interface</title>
+
+
+<section id="lirc_dev_intro">
+<title>Introduction</title>
+
+<para>The LIRC device interface is a bi-directional interface for
+transporting raw IR data between userspace and kernelspace. Fundamentally,
+it is just a chardev (/dev/lircX, for X = 0, 1, 2, ...), with a number
+of standard struct file_operations defined on it. With respect to
+transporting raw IR data to and fro, the essential fops are read, write
+and ioctl.</para>
+
+<para>Example dmesg output upon a driver registering w/LIRC:</para>
+ <blockquote>
+ <para>$ dmesg |grep lirc_dev</para>
+ <para>lirc_dev: IR Remote Control driver registered, major 248</para>
+ <para>rc rc0: lirc_dev: driver ir-lirc-codec (mceusb) registered at minor = 0</para>
+ </blockquote>
+
+<para>What you should see for a chardev:</para>
+ <blockquote>
+ <para>$ ls -l /dev/lirc*</para>
+ <para>crw-rw---- 1 root root 248, 0 Jul 2 22:20 /dev/lirc0</para>
+ </blockquote>
+</section>
+
+<section id="lirc_read">
+<title>LIRC read fop</title>
+
+<para>The lircd userspace daemon reads raw IR data from the LIRC chardev. The
+exact format of the data depends on what modes a driver supports, and what
+mode has been selected. lircd obtains supported modes and sets the active mode
+via the ioctl interface, detailed at <xref linkend="lirc_ioctl"/>. The generally
+preferred mode is LIRC_MODE_MODE2, in which packets containing an int value
+describing an IR signal are read from the chardev.</para>
+
+<para>See also <ulink url="http://www.lirc.org/html/technical.html">http://www.lirc.org/html/technical.html</ulink> for more info.</para>
+</section>
+
+<section id="lirc_write">
+<title>LIRC write fop</title>
+
+<para>The data written to the chardev is a pulse/space sequence of integer
+values. Pulses and spaces are only marked implicitly by their position. The
+data must start and end with a pulse, therefore, the data must always include
+an uneven number of samples. The write function must block until the data has
+been transmitted by the hardware.</para>
+</section>
+
+<section id="lirc_ioctl">
+<title>LIRC ioctl fop</title>
+
+<para>The LIRC device's ioctl definition is bound by the ioctl function
+definition of struct file_operations, leaving us with an unsigned int
+for the ioctl command and an unsigned long for the arg. For the purposes
+of ioctl portability across 32-bit and 64-bit, these values are capped
+to their 32-bit sizes.</para>
+
+<para>The following ioctls can be used to change specific hardware settings.
+In general each driver should have a default set of settings. The driver
+implementation is expected to re-apply the default settings when the device
+is closed by user-space, so that every application opening the device can rely
+on working with the default settings initially.</para>
+
+<variablelist>
+ <varlistentry>
+ <term>LIRC_GET_FEATURES</term>
+ <listitem>
+ <para>Obviously, get the underlying hardware device's features. If a driver
+ does not announce support of certain features, calling of the corresponding
+ ioctls is undefined.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_GET_SEND_MODE</term>
+ <listitem>
+ <para>Get supported transmit mode. Only LIRC_MODE_PULSE is supported by lircd.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_GET_REC_MODE</term>
+ <listitem>
+ <para>Get supported receive modes. Only LIRC_MODE_MODE2 and LIRC_MODE_LIRCCODE
+ are supported by lircd.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_GET_SEND_CARRIER</term>
+ <listitem>
+ <para>Get carrier frequency (in Hz) currently used for transmit.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_GET_REC_CARRIER</term>
+ <listitem>
+ <para>Get carrier frequency (in Hz) currently used for IR reception.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_{G,S}ET_{SEND,REC}_DUTY_CYCLE</term>
+ <listitem>
+ <para>Get/set the duty cycle (from 0 to 100) of the carrier signal. Currently,
+ no special meaning is defined for 0 or 100, but this could be used to switch
+ off carrier generation in the future, so these values should be reserved.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_GET_REC_RESOLUTION</term>
+ <listitem>
+ <para>Some receiver have maximum resolution which is defined by internal
+ sample rate or data format limitations. E.g. it's common that signals can
+ only be reported in 50 microsecond steps. This integer value is used by
+ lircd to automatically adjust the aeps tolerance value in the lircd
+ config file.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_GET_M{IN,AX}_TIMEOUT</term>
+ <listitem>
+ <para>Some devices have internal timers that can be used to detect when
+ there's no IR activity for a long time. This can help lircd in detecting
+ that a IR signal is finished and can speed up the decoding process.
+ Returns an integer value with the minimum/maximum timeout that can be
+ set. Some devices have a fixed timeout, in that case both ioctls will
+ return the same value even though the timeout cannot be changed.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_GET_M{IN,AX}_FILTER_{PULSE,SPACE}</term>
+ <listitem>
+ <para>Some devices are able to filter out spikes in the incoming signal
+ using given filter rules. These ioctls return the hardware capabilities
+ that describe the bounds of the possible filters. Filter settings depend
+ on the IR protocols that are expected. lircd derives the settings from
+ all protocols definitions found in its config file.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_GET_LENGTH</term>
+ <listitem>
+ <para>Retrieves the code length in bits (only for LIRC_MODE_LIRCCODE).
+ Reads on the device must be done in blocks matching the bit count.
+ The bit could should be rounded up so that it matches full bytes.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_SET_{SEND,REC}_MODE</term>
+ <listitem>
+ <para>Set send/receive mode. Largely obsolete for send, as only
+ LIRC_MODE_PULSE is supported.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_SET_{SEND,REC}_CARRIER</term>
+ <listitem>
+ <para>Set send/receive carrier (in Hz).</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_SET_TRANSMITTER_MASK</term>
+ <listitem>
+ <para>This enables the given set of transmitters. The first transmitter
+ is encoded by the least significant bit, etc. When an invalid bit mask
+ is given, i.e. a bit is set, even though the device does not have so many
+ transitters, then this ioctl returns the number of available transitters
+ and does nothing otherwise.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_SET_REC_TIMEOUT</term>
+ <listitem>
+ <para>Sets the integer value for IR inactivity timeout (cf.
+ LIRC_GET_MIN_TIMEOUT and LIRC_GET_MAX_TIMEOUT). A value of 0 (if
+ supported by the hardware) disables all hardware timeouts and data should
+ be reported as soon as possible. If the exact value cannot be set, then
+ the next possible value _greater_ than the given value should be set.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_SET_REC_TIMEOUT_REPORTS</term>
+ <listitem>
+ <para>Enable (1) or disable (0) timeout reports in LIRC_MODE_MODE2. By
+ default, timeout reports should be turned off.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_SET_REC_FILTER_{,PULSE,SPACE}</term>
+ <listitem>
+ <para>Pulses/spaces shorter than this are filtered out by hardware. If
+ filters cannot be set independently for pulse/space, the corresponding
+ ioctls must return an error and LIRC_SET_REC_FILTER shall be used instead.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_SET_MEASURE_CARRIER_MODE</term>
+ <listitem>
+ <para>Enable (1)/disable (0) measure mode. If enabled, from the next key
+ press on, the driver will send LIRC_MODE2_FREQUENCY packets. By default
+ this should be turned off.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_SET_REC_{DUTY_CYCLE,CARRIER}_RANGE</term>
+ <listitem>
+ <para>To set a range use LIRC_SET_REC_DUTY_CYCLE_RANGE/LIRC_SET_REC_CARRIER_RANGE
+ with the lower bound first and later LIRC_SET_REC_DUTY_CYCLE/LIRC_SET_REC_CARRIER
+ with the upper bound.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_NOTIFY_DECODE</term>
+ <listitem>
+ <para>This ioctl is called by lircd whenever a successful decoding of an
+ incoming IR signal could be done. This can be used by supporting hardware
+ to give visual feedback to the user e.g. by flashing a LED.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_SETUP_{START,END}</term>
+ <listitem>
+ <para>Setting of several driver parameters can be optimized by encapsulating
+ the according ioctl calls with LIRC_SETUP_START/LIRC_SETUP_END. When a
+ driver receives a LIRC_SETUP_START ioctl it can choose to not commit
+ further setting changes to the hardware until a LIRC_SETUP_END is received.
+ But this is open to the driver implementation and every driver must also
+ handle parameter changes which are not encapsulated by LIRC_SETUP_START
+ and LIRC_SETUP_END. Drivers can also choose to ignore these ioctls.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>LIRC_SET_WIDEBAND_RECEIVER</term>
+ <listitem>
+ <para>Some receivers are equipped with special wide band receiver which is intended
+ to be used to learn output of existing remote.
+ Calling that ioctl with (1) will enable it, and with (0) disable it.
+ This might be useful of receivers that have otherwise narrow band receiver
+ that prevents them to be used with some remotes.
+ Wide band receiver might also be more precise
+ On the other hand its disadvantage it usually reduced range of reception.
+ Note: wide band receiver might be implictly enabled if you enable
+ carrier reports. In that case it will be disabled as soon as you disable
+ carrier reports. Trying to disable wide band receiver while carrier
+ reports are active will do nothing.</para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+<section id="lirc_dev_errors">
+ &return-value;
+</section>
+</section>
+</section>
diff --git a/Documentation/DocBook/v4l/media-controller.xml b/Documentation/DocBook/media/v4l/media-controller.xml
similarity index 100%
rename from Documentation/DocBook/v4l/media-controller.xml
rename to Documentation/DocBook/media/v4l/media-controller.xml
diff --git a/Documentation/DocBook/v4l/media-func-close.xml b/Documentation/DocBook/media/v4l/media-func-close.xml
similarity index 100%
rename from Documentation/DocBook/v4l/media-func-close.xml
rename to Documentation/DocBook/media/v4l/media-func-close.xml
diff --git a/Documentation/DocBook/media/v4l/media-func-ioctl.xml b/Documentation/DocBook/media/v4l/media-func-ioctl.xml
new file mode 100644
index 0000000..39478d0
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/media-func-ioctl.xml
@@ -0,0 +1,73 @@
+<refentry id="media-func-ioctl">
+ <refmeta>
+ <refentrytitle>media ioctl()</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>media-ioctl</refname>
+ <refpurpose>Control a media device</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcsynopsisinfo>#include <sys/ioctl.h></funcsynopsisinfo>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>void *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>Media ioctl request code as defined in the media.h header file,
+ for example MEDIA_IOC_SETUP_LINK.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para>Pointer to a request-specific structure.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+ <para>The <function>ioctl()</function> function manipulates media device
+ parameters. The argument <parameter>fd</parameter> must be an open file
+ descriptor.</para>
+ <para>The ioctl <parameter>request</parameter> code specifies the media
+ function to be called. It has encoded in it whether the argument is an
+ input, output or read/write parameter, and the size of the argument
+ <parameter>argp</parameter> in bytes.</para>
+ <para>Macros and structures definitions specifying media ioctl requests and
+ their parameters are located in the media.h header file. All media ioctl
+ requests, their respective function and parameters are specified in
+ <xref linkend="media-user-func" />.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <para>Request-specific error codes are listed in the
+ individual requests descriptions.</para>
+ <para>When an ioctl that takes an output or read/write parameter fails,
+ the parameter remains unmodified.</para>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/v4l/media-func-open.xml b/Documentation/DocBook/media/v4l/media-func-open.xml
similarity index 100%
rename from Documentation/DocBook/v4l/media-func-open.xml
rename to Documentation/DocBook/media/v4l/media-func-open.xml
diff --git a/Documentation/DocBook/media/v4l/media-ioc-device-info.xml b/Documentation/DocBook/media/v4l/media-ioc-device-info.xml
new file mode 100644
index 0000000..2ce5214
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/media-ioc-device-info.xml
@@ -0,0 +1,132 @@
+<refentry id="media-ioc-device-info">
+ <refmeta>
+ <refentrytitle>ioctl MEDIA_IOC_DEVICE_INFO</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>MEDIA_IOC_DEVICE_INFO</refname>
+ <refpurpose>Query device information</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct media_device_info *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>File descriptor returned by
+ <link linkend='media-func-open'><function>open()</function></link>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>MEDIA_IOC_DEVICE_INFO</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>All media devices must support the <constant>MEDIA_IOC_DEVICE_INFO</constant>
+ ioctl. To query device information, applications call the ioctl with a
+ pointer to a &media-device-info;. The driver fills the structure and returns
+ the information to the application.
+ The ioctl never fails.</para>
+
+ <table pgwide="1" frame="none" id="media-device-info">
+ <title>struct <structname>media_device_info</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>char</entry>
+ <entry><structfield>driver</structfield>[16]</entry>
+ <entry><para>Name of the driver implementing the media API as a
+ NUL-terminated ASCII string. The driver version is stored in the
+ <structfield>driver_version</structfield> field.</para>
+ <para>Driver specific applications can use this information to
+ verify the driver identity. It is also useful to work around
+ known bugs, or to identify drivers in error reports.</para></entry>
+ </row>
+ <row>
+ <entry>char</entry>
+ <entry><structfield>model</structfield>[32]</entry>
+ <entry>Device model name as a NUL-terminated UTF-8 string. The
+ device version is stored in the <structfield>device_version</structfield>
+ field and is not be appended to the model name.</entry>
+ </row>
+ <row>
+ <entry>char</entry>
+ <entry><structfield>serial</structfield>[40]</entry>
+ <entry>Serial number as a NUL-terminated ASCII string.</entry>
+ </row>
+ <row>
+ <entry>char</entry>
+ <entry><structfield>bus_info</structfield>[32]</entry>
+ <entry>Location of the device in the system as a NUL-terminated
+ ASCII string. This includes the bus type name (PCI, USB, ...) and a
+ bus-specific identifier.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>media_version</structfield></entry>
+ <entry>Media API version, formatted with the
+ <constant>KERNEL_VERSION()</constant> macro.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>hw_revision</structfield></entry>
+ <entry>Hardware device revision in a driver-specific format.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>media_version</structfield></entry>
+ <entry>Media device driver version, formatted with the
+ <constant>KERNEL_VERSION()</constant> macro. Together with the
+ <structfield>driver</structfield> field this identifies a particular
+ driver.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[31]</entry>
+ <entry>Reserved for future extensions. Drivers and applications must
+ set this array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ <para>The <structfield>serial</structfield> and <structfield>bus_info</structfield>
+ fields can be used to distinguish between multiple instances of otherwise
+ identical hardware. The serial number takes precedence when provided and can
+ be assumed to be unique. If the serial number is an empty string, the
+ <structfield>bus_info</structfield> field can be used instead. The
+ <structfield>bus_info</structfield> field is guaranteed to be unique, but
+ can vary across reboots or device unplug/replug.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/v4l/media-ioc-enum-entities.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml
similarity index 100%
rename from Documentation/DocBook/v4l/media-ioc-enum-entities.xml
rename to Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml
diff --git a/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml
new file mode 100644
index 0000000..355df43
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml
@@ -0,0 +1,207 @@
+<refentry id="media-ioc-enum-links">
+ <refmeta>
+ <refentrytitle>ioctl MEDIA_IOC_ENUM_LINKS</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>MEDIA_IOC_ENUM_LINKS</refname>
+ <refpurpose>Enumerate all pads and links for a given entity</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct media_links_enum *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>File descriptor returned by
+ <link linkend='media-func-open'><function>open()</function></link>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>MEDIA_IOC_ENUM_LINKS</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To enumerate pads and/or links for a given entity, applications set
+ the entity field of a &media-links-enum; structure and initialize the
+ &media-pad-desc; and &media-link-desc; structure arrays pointed by the
+ <structfield>pads</structfield> and <structfield>links</structfield> fields.
+ They then call the MEDIA_IOC_ENUM_LINKS ioctl with a pointer to this
+ structure.</para>
+ <para>If the <structfield>pads</structfield> field is not NULL, the driver
+ fills the <structfield>pads</structfield> array with information about the
+ entity's pads. The array must have enough room to store all the entity's
+ pads. The number of pads can be retrieved with the &MEDIA-IOC-ENUM-ENTITIES;
+ ioctl.</para>
+ <para>If the <structfield>links</structfield> field is not NULL, the driver
+ fills the <structfield>links</structfield> array with information about the
+ entity's outbound links. The array must have enough room to store all the
+ entity's outbound links. The number of outbound links can be retrieved with
+ the &MEDIA-IOC-ENUM-ENTITIES; ioctl.</para>
+ <para>Only forward links that originate at one of the entity's source pads
+ are returned during the enumeration process.</para>
+
+ <table pgwide="1" frame="none" id="media-links-enum">
+ <title>struct <structname>media_links_enum</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>entity</structfield></entry>
+ <entry>Entity id, set by the application.</entry>
+ </row>
+ <row>
+ <entry>struct &media-pad-desc;</entry>
+ <entry>*<structfield>pads</structfield></entry>
+ <entry>Pointer to a pads array allocated by the application. Ignored
+ if NULL.</entry>
+ </row>
+ <row>
+ <entry>struct &media-link-desc;</entry>
+ <entry>*<structfield>links</structfield></entry>
+ <entry>Pointer to a links array allocated by the application. Ignored
+ if NULL.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="media-pad-desc">
+ <title>struct <structname>media_pad_desc</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>entity</structfield></entry>
+ <entry>ID of the entity this pad belongs to.</entry>
+ </row>
+ <row>
+ <entry>__u16</entry>
+ <entry><structfield>index</structfield></entry>
+ <entry>0-based pad index.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>flags</structfield></entry>
+ <entry>Pad flags, see <xref linkend="media-pad-flag" /> for more details.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table frame="none" pgwide="1" id="media-pad-flag">
+ <title>Media pad flags</title>
+ <tgroup cols="2">
+ <colspec colname="c1"/>
+ <colspec colname="c2"/>
+ <tbody valign="top">
+ <row>
+ <entry><constant>MEDIA_PAD_FL_SINK</constant></entry>
+ <entry>Input pad, relative to the entity. Input pads sink data and
+ are targets of links.</entry>
+ </row>
+ <row>
+ <entry><constant>MEDIA_PAD_FL_SOURCE</constant></entry>
+ <entry>Output pad, relative to the entity. Output pads source data
+ and are origins of links.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="media-link-desc">
+ <title>struct <structname>media_link_desc</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>struct &media-pad-desc;</entry>
+ <entry><structfield>source</structfield></entry>
+ <entry>Pad at the origin of this link.</entry>
+ </row>
+ <row>
+ <entry>struct &media-pad-desc;</entry>
+ <entry><structfield>sink</structfield></entry>
+ <entry>Pad at the target of this link.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>flags</structfield></entry>
+ <entry>Link flags, see <xref linkend="media-link-flag" /> for more details.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table frame="none" pgwide="1" id="media-link-flag">
+ <title>Media link flags</title>
+ <tgroup cols="2">
+ <colspec colname="c1"/>
+ <colspec colname="c2"/>
+ <tbody valign="top">
+ <row>
+ <entry><constant>MEDIA_LNK_FL_ENABLED</constant></entry>
+ <entry>The link is enabled and can be used to transfer media data.
+ When two or more links target a sink pad, only one of them can be
+ enabled at a time.</entry>
+ </row>
+ <row>
+ <entry><constant>MEDIA_LNK_FL_IMMUTABLE</constant></entry>
+ <entry>The link enabled state can't be modified at runtime. An
+ immutable link is always enabled.</entry>
+ </row>
+ <row>
+ <entry><constant>MEDIA_LNK_FL_DYNAMIC</constant></entry>
+ <entry>The link enabled state can be modified during streaming. This
+ flag is set by drivers and is read-only for applications.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ <para>One and only one of <constant>MEDIA_PAD_FL_SINK</constant> and
+ <constant>MEDIA_PAD_FL_SOURCE</constant> must be set for every pad.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The &media-links-enum; <structfield>id</structfield> references
+ a non-existing entity.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/media-ioc-setup-link.xml b/Documentation/DocBook/media/v4l/media-ioc-setup-link.xml
new file mode 100644
index 0000000..fc2e522
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/media-ioc-setup-link.xml
@@ -0,0 +1,84 @@
+<refentry id="media-ioc-setup-link">
+ <refmeta>
+ <refentrytitle>ioctl MEDIA_IOC_SETUP_LINK</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>MEDIA_IOC_SETUP_LINK</refname>
+ <refpurpose>Modify the properties of a link</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct media_link_desc *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>File descriptor returned by
+ <link linkend='media-func-open'><function>open()</function></link>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>MEDIA_IOC_SETUP_LINK</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To change link properties applications fill a &media-link-desc; with
+ link identification information (source and sink pad) and the new requested
+ link flags. They then call the MEDIA_IOC_SETUP_LINK ioctl with a pointer to
+ that structure.</para>
+ <para>The only configurable property is the <constant>ENABLED</constant>
+ link flag to enable/disable a link. Links marked with the
+ <constant>IMMUTABLE</constant> link flag can not be enabled or disabled.
+ </para>
+ <para>Link configuration has no side effect on other links. If an enabled
+ link at the sink pad prevents the link from being enabled, the driver
+ returns with an &EBUSY;.</para>
+ <para>Only links marked with the <constant>DYNAMIC</constant> link flag can
+ be enabled/disabled while streaming media data. Attempting to enable or
+ disable a streaming non-dynamic link will return an &EBUSY;.</para>
+ <para>If the specified link can't be found the driver returns with an
+ &EINVAL;.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The &media-link-desc; references a non-existing link, or the
+ link is immutable and an attempt to modify its configuration was made.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/v4l/pipeline.pdf b/Documentation/DocBook/media/v4l/pipeline.pdf
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diff --git a/Documentation/DocBook/media/v4l/pixfmt.xml b/Documentation/DocBook/media/v4l/pixfmt.xml
new file mode 100644
index 0000000..2ff6b77
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@@ -0,0 +1,1007 @@
+ <title>Image Formats</title>
+
+ <para>The V4L2 API was primarily designed for devices exchanging
+image data with applications. The
+<structname>v4l2_pix_format</structname> and <structname>v4l2_pix_format_mplane
+</structname> structures define the format and layout of an image in memory.
+The former is used with the single-planar API, while the latter is used with the
+multi-planar version (see <xref linkend="planar-apis"/>). Image formats are
+negotiated with the &VIDIOC-S-FMT; ioctl. (The explanations here focus on video
+capturing and output, for overlay frame buffer formats see also
+&VIDIOC-G-FBUF;.)</para>
+
+<section>
+ <title>Single-planar format structure</title>
+ <table pgwide="1" frame="none" id="v4l2-pix-format">
+ <title>struct <structname>v4l2_pix_format</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>width</structfield></entry>
+ <entry>Image width in pixels.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>height</structfield></entry>
+ <entry>Image height in pixels.</entry>
+ </row>
+ <row>
+ <entry spanname="hspan">Applications set these fields to
+request an image size, drivers return the closest possible values. In
+case of planar formats the <structfield>width</structfield> and
+<structfield>height</structfield> applies to the largest plane. To
+avoid ambiguities drivers must return values rounded up to a multiple
+of the scale factor of any smaller planes. For example when the image
+format is YUV 4:2:0, <structfield>width</structfield> and
+<structfield>height</structfield> must be multiples of two.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>pixelformat</structfield></entry>
+ <entry>The pixel format or type of compression, set by the
+application. This is a little endian <link
+linkend="v4l2-fourcc">four character code</link>. V4L2 defines
+standard RGB formats in <xref linkend="rgb-formats" />, YUV formats in <xref
+linkend="yuv-formats" />, and reserved codes in <xref
+linkend="reserved-formats" /></entry>
+ </row>
+ <row>
+ <entry>&v4l2-field;</entry>
+ <entry><structfield>field</structfield></entry>
+ <entry>Video images are typically interlaced. Applications
+can request to capture or output only the top or bottom field, or both
+fields interlaced or sequentially stored in one buffer or alternating
+in separate buffers. Drivers return the actual field order selected.
+For details see <xref linkend="field-order" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>bytesperline</structfield></entry>
+ <entry>Distance in bytes between the leftmost pixels in two
+adjacent lines.</entry>
+ </row>
+ <row>
+ <entry spanname="hspan"><para>Both applications and drivers
+can set this field to request padding bytes at the end of each line.
+Drivers however may ignore the value requested by the application,
+returning <structfield>width</structfield> times bytes per pixel or a
+larger value required by the hardware. That implies applications can
+just set this field to zero to get a reasonable
+default.</para><para>Video hardware may access padding bytes,
+therefore they must reside in accessible memory. Consider cases where
+padding bytes after the last line of an image cross a system page
+boundary. Input devices may write padding bytes, the value is
+undefined. Output devices ignore the contents of padding
+bytes.</para><para>When the image format is planar the
+<structfield>bytesperline</structfield> value applies to the largest
+plane and is divided by the same factor as the
+<structfield>width</structfield> field for any smaller planes. For
+example the Cb and Cr planes of a YUV 4:2:0 image have half as many
+padding bytes following each line as the Y plane. To avoid ambiguities
+drivers must return a <structfield>bytesperline</structfield> value
+rounded up to a multiple of the scale factor.</para></entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>sizeimage</structfield></entry>
+ <entry>Size in bytes of the buffer to hold a complete image,
+set by the driver. Usually this is
+<structfield>bytesperline</structfield> times
+<structfield>height</structfield>. When the image consists of variable
+length compressed data this is the maximum number of bytes required to
+hold an image.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-colorspace;</entry>
+ <entry><structfield>colorspace</structfield></entry>
+ <entry>This information supplements the
+<structfield>pixelformat</structfield> and must be set by the driver,
+see <xref linkend="colorspaces" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>priv</structfield></entry>
+ <entry>Reserved for custom (driver defined) additional
+information about formats. When not used drivers and applications must
+set this field to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+</section>
+
+<section>
+ <title>Multi-planar format structures</title>
+ <para>The <structname>v4l2_plane_pix_format</structname> structures define
+ size and layout for each of the planes in a multi-planar format.
+ The <structname>v4l2_pix_format_mplane</structname> structure contains
+ information common to all planes (such as image width and height) and
+ an array of <structname>v4l2_plane_pix_format</structname> structures,
+ describing all planes of that format.</para>
+ <table pgwide="1" frame="none" id="v4l2-plane-pix-format">
+ <title>struct <structname>v4l2_plane_pix_format</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>sizeimage</structfield></entry>
+ <entry>Maximum size in bytes required for image data in this plane.
+ </entry>
+ </row>
+ <row>
+ <entry>__u16</entry>
+ <entry><structfield>bytesperline</structfield></entry>
+ <entry>Distance in bytes between the leftmost pixels in two adjacent
+ lines.</entry>
+ </row>
+ <row>
+ <entry>__u16</entry>
+ <entry><structfield>reserved[7]</structfield></entry>
+ <entry>Reserved for future extensions. Should be zeroed by the
+ application.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ <table pgwide="1" frame="none" id="v4l2-pix-format-mplane">
+ <title>struct <structname>v4l2_pix_format_mplane</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>width</structfield></entry>
+ <entry>Image width in pixels.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>height</structfield></entry>
+ <entry>Image height in pixels.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>pixelformat</structfield></entry>
+ <entry>The pixel format. Both single- and multi-planar four character
+codes can be used.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-field;</entry>
+ <entry><structfield>field</structfield></entry>
+ <entry>See &v4l2-pix-format;.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-colorspace;</entry>
+ <entry><structfield>colorspace</structfield></entry>
+ <entry>See &v4l2-pix-format;.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-plane-pix-format;</entry>
+ <entry><structfield>plane_fmt[VIDEO_MAX_PLANES]</structfield></entry>
+ <entry>An array of structures describing format of each plane this
+ pixel format consists of. The number of valid entries in this array
+ has to be put in the <structfield>num_planes</structfield>
+ field.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>num_planes</structfield></entry>
+ <entry>Number of planes (i.e. separate memory buffers) for this format
+ and the number of valid entries in the
+ <structfield>plane_fmt</structfield> array.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>reserved[11]</structfield></entry>
+ <entry>Reserved for future extensions. Should be zeroed by the
+ application.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+</section>
+
+ <section>
+ <title>Standard Image Formats</title>
+
+ <para>In order to exchange images between drivers and
+applications, it is necessary to have standard image data formats
+which both sides will interpret the same way. V4L2 includes several
+such formats, and this section is intended to be an unambiguous
+specification of the standard image data formats in V4L2.</para>
+
+ <para>V4L2 drivers are not limited to these formats, however.
+Driver-specific formats are possible. In that case the application may
+depend on a codec to convert images to one of the standard formats
+when needed. But the data can still be stored and retrieved in the
+proprietary format. For example, a device may support a proprietary
+compressed format. Applications can still capture and save the data in
+the compressed format, saving much disk space, and later use a codec
+to convert the images to the X Windows screen format when the video is
+to be displayed.</para>
+
+ <para>Even so, ultimately, some standard formats are needed, so
+the V4L2 specification would not be complete without well-defined
+standard formats.</para>
+
+ <para>The V4L2 standard formats are mainly uncompressed formats. The
+pixels are always arranged in memory from left to right, and from top
+to bottom. The first byte of data in the image buffer is always for
+the leftmost pixel of the topmost row. Following that is the pixel
+immediately to its right, and so on until the end of the top row of
+pixels. Following the rightmost pixel of the row there may be zero or
+more bytes of padding to guarantee that each row of pixel data has a
+certain alignment. Following the pad bytes, if any, is data for the
+leftmost pixel of the second row from the top, and so on. The last row
+has just as many pad bytes after it as the other rows.</para>
+
+ <para>In V4L2 each format has an identifier which looks like
+<constant>PIX_FMT_XXX</constant>, defined in the <link
+linkend="videodev">videodev.h</link> header file. These identifiers
+represent <link linkend="v4l2-fourcc">four character (FourCC) codes</link>
+which are also listed below, however they are not the same as those
+used in the Windows world.</para>
+
+ <para>For some formats, data is stored in separate, discontiguous
+memory buffers. Those formats are identified by a separate set of FourCC codes
+and are referred to as "multi-planar formats". For example, a YUV422 frame is
+normally stored in one memory buffer, but it can also be placed in two or three
+separate buffers, with Y component in one buffer and CbCr components in another
+in the 2-planar version or with each component in its own buffer in the
+3-planar case. Those sub-buffers are referred to as "planes".</para>
+ </section>
+
+ <section id="colorspaces">
+ <title>Colorspaces</title>
+
+ <para>[intro]</para>
+
+ <!-- See proposal by Billy Biggs, video4linux-list@redhat.com
+on 11 Oct 2002, subject: "Re: [V4L] Re: v4l2 api", and
+http://vektor.theorem.ca/graphics/ycbcr/ and
+http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html -->
+
+ <para>
+ <variablelist>
+ <varlistentry>
+ <term>Gamma Correction</term>
+ <listitem>
+ <para>[to do]</para>
+ <para>E'<subscript>R</subscript> = f(R)</para>
+ <para>E'<subscript>G</subscript> = f(G)</para>
+ <para>E'<subscript>B</subscript> = f(B)</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Construction of luminance and color-difference
+signals</term>
+ <listitem>
+ <para>[to do]</para>
+ <para>E'<subscript>Y</subscript> =
+Coeff<subscript>R</subscript> E'<subscript>R</subscript>
++ Coeff<subscript>G</subscript> E'<subscript>G</subscript>
++ Coeff<subscript>B</subscript> E'<subscript>B</subscript></para>
+ <para>(E'<subscript>R</subscript> - E'<subscript>Y</subscript>) = E'<subscript>R</subscript>
+- Coeff<subscript>R</subscript> E'<subscript>R</subscript>
+- Coeff<subscript>G</subscript> E'<subscript>G</subscript>
+- Coeff<subscript>B</subscript> E'<subscript>B</subscript></para>
+ <para>(E'<subscript>B</subscript> - E'<subscript>Y</subscript>) = E'<subscript>B</subscript>
+- Coeff<subscript>R</subscript> E'<subscript>R</subscript>
+- Coeff<subscript>G</subscript> E'<subscript>G</subscript>
+- Coeff<subscript>B</subscript> E'<subscript>B</subscript></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Re-normalized color-difference signals</term>
+ <listitem>
+ <para>The color-difference signals are scaled back to unity
+range [-0.5;+0.5]:</para>
+ <para>K<subscript>B</subscript> = 0.5 / (1 - Coeff<subscript>B</subscript>)</para>
+ <para>K<subscript>R</subscript> = 0.5 / (1 - Coeff<subscript>R</subscript>)</para>
+ <para>P<subscript>B</subscript> =
+K<subscript>B</subscript> (E'<subscript>B</subscript> - E'<subscript>Y</subscript>) =
+ 0.5 (Coeff<subscript>R</subscript> / Coeff<subscript>B</subscript>) E'<subscript>R</subscript>
++ 0.5 (Coeff<subscript>G</subscript> / Coeff<subscript>B</subscript>) E'<subscript>G</subscript>
++ 0.5 E'<subscript>B</subscript></para>
+ <para>P<subscript>R</subscript> =
+K<subscript>R</subscript> (E'<subscript>R</subscript> - E'<subscript>Y</subscript>) =
+ 0.5 E'<subscript>R</subscript>
++ 0.5 (Coeff<subscript>G</subscript> / Coeff<subscript>R</subscript>) E'<subscript>G</subscript>
++ 0.5 (Coeff<subscript>B</subscript> / Coeff<subscript>R</subscript>) E'<subscript>B</subscript></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>Quantization</term>
+ <listitem>
+ <para>[to do]</para>
+ <para>Y' = (Lum. Levels - 1) · E'<subscript>Y</subscript> + Lum. Offset</para>
+ <para>C<subscript>B</subscript> = (Chrom. Levels - 1)
+· P<subscript>B</subscript> + Chrom. Offset</para>
+ <para>C<subscript>R</subscript> = (Chrom. Levels - 1)
+· P<subscript>R</subscript> + Chrom. Offset</para>
+ <para>Rounding to the nearest integer and clamping to the range
+[0;255] finally yields the digital color components Y'CbCr
+stored in YUV images.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </para>
+
+ <example>
+ <title>ITU-R Rec. BT.601 color conversion</title>
+
+ <para>Forward Transformation</para>
+
+ <programlisting>
+int ER, EG, EB; /* gamma corrected RGB input [0;255] */
+int Y1, Cb, Cr; /* output [0;255] */
+
+double r, g, b; /* temporaries */
+double y1, pb, pr;
+
+int
+clamp (double x)
+{
+ int r = x; /* round to nearest */
+
+ if (r < 0) return 0;
+ else if (r > 255) return 255;
+ else return r;
+}
+
+r = ER / 255.0;
+g = EG / 255.0;
+b = EB / 255.0;
+
+y1 = 0.299 * r + 0.587 * g + 0.114 * b;
+pb = -0.169 * r - 0.331 * g + 0.5 * b;
+pr = 0.5 * r - 0.419 * g - 0.081 * b;
+
+Y1 = clamp (219 * y1 + 16);
+Cb = clamp (224 * pb + 128);
+Cr = clamp (224 * pr + 128);
+
+/* or shorter */
+
+y1 = 0.299 * ER + 0.587 * EG + 0.114 * EB;
+
+Y1 = clamp ( (219 / 255.0) * y1 + 16);
+Cb = clamp (((224 / 255.0) / (2 - 2 * 0.114)) * (EB - y1) + 128);
+Cr = clamp (((224 / 255.0) / (2 - 2 * 0.299)) * (ER - y1) + 128);
+ </programlisting>
+
+ <para>Inverse Transformation</para>
+
+ <programlisting>
+int Y1, Cb, Cr; /* gamma pre-corrected input [0;255] */
+int ER, EG, EB; /* output [0;255] */
+
+double r, g, b; /* temporaries */
+double y1, pb, pr;
+
+int
+clamp (double x)
+{
+ int r = x; /* round to nearest */
+
+ if (r < 0) return 0;
+ else if (r > 255) return 255;
+ else return r;
+}
+
+y1 = (255 / 219.0) * (Y1 - 16);
+pb = (255 / 224.0) * (Cb - 128);
+pr = (255 / 224.0) * (Cr - 128);
+
+r = 1.0 * y1 + 0 * pb + 1.402 * pr;
+g = 1.0 * y1 - 0.344 * pb - 0.714 * pr;
+b = 1.0 * y1 + 1.772 * pb + 0 * pr;
+
+ER = clamp (r * 255); /* [ok? one should prob. limit y1,pb,pr] */
+EG = clamp (g * 255);
+EB = clamp (b * 255);
+ </programlisting>
+ </example>
+
+ <table pgwide="1" id="v4l2-colorspace" orient="land">
+ <title>enum v4l2_colorspace</title>
+ <tgroup cols="11" align="center">
+ <colspec align="left" />
+ <colspec align="center" />
+ <colspec align="left" />
+ <colspec colname="cr" />
+ <colspec colname="cg" />
+ <colspec colname="cb" />
+ <colspec colname="wp" />
+ <colspec colname="gc" />
+ <colspec colname="lum" />
+ <colspec colname="qy" />
+ <colspec colname="qc" />
+ <spanspec namest="cr" nameend="cb" spanname="chrom" />
+ <spanspec namest="qy" nameend="qc" spanname="quant" />
+ <spanspec namest="lum" nameend="qc" spanname="spam" />
+ <thead>
+ <row>
+ <entry morerows="1">Identifier</entry>
+ <entry morerows="1">Value</entry>
+ <entry morerows="1">Description</entry>
+ <entry spanname="chrom">Chromaticities<footnote>
+ <para>The coordinates of the color primaries are
+given in the CIE system (1931)</para>
+ </footnote></entry>
+ <entry morerows="1">White Point</entry>
+ <entry morerows="1">Gamma Correction</entry>
+ <entry morerows="1">Luminance E'<subscript>Y</subscript></entry>
+ <entry spanname="quant">Quantization</entry>
+ </row>
+ <row>
+ <entry>Red</entry>
+ <entry>Green</entry>
+ <entry>Blue</entry>
+ <entry>Y'</entry>
+ <entry>Cb, Cr</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_COLORSPACE_SMPTE170M</constant></entry>
+ <entry>1</entry>
+ <entry>NTSC/PAL according to <xref linkend="smpte170m" />,
+<xref linkend="itu601" /></entry>
+ <entry>x = 0.630, y = 0.340</entry>
+ <entry>x = 0.310, y = 0.595</entry>
+ <entry>x = 0.155, y = 0.070</entry>
+ <entry>x = 0.3127, y = 0.3290,
+ Illuminant D<subscript>65</subscript></entry>
+ <entry>E' = 4.5 I for I ≤0.018,
+1.099 I<superscript>0.45</superscript> - 0.099 for 0.018 < I</entry>
+ <entry>0.299 E'<subscript>R</subscript>
++ 0.587 E'<subscript>G</subscript>
++ 0.114 E'<subscript>B</subscript></entry>
+ <entry>219 E'<subscript>Y</subscript> + 16</entry>
+ <entry>224 P<subscript>B,R</subscript> + 128</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_COLORSPACE_SMPTE240M</constant></entry>
+ <entry>2</entry>
+ <entry>1125-Line (US) HDTV, see <xref
+linkend="smpte240m" /></entry>
+ <entry>x = 0.630, y = 0.340</entry>
+ <entry>x = 0.310, y = 0.595</entry>
+ <entry>x = 0.155, y = 0.070</entry>
+ <entry>x = 0.3127, y = 0.3290,
+ Illuminant D<subscript>65</subscript></entry>
+ <entry>E' = 4 I for I ≤0.0228,
+1.1115 I<superscript>0.45</superscript> - 0.1115 for 0.0228 < I</entry>
+ <entry>0.212 E'<subscript>R</subscript>
++ 0.701 E'<subscript>G</subscript>
++ 0.087 E'<subscript>B</subscript></entry>
+ <entry>219 E'<subscript>Y</subscript> + 16</entry>
+ <entry>224 P<subscript>B,R</subscript> + 128</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_COLORSPACE_REC709</constant></entry>
+ <entry>3</entry>
+ <entry>HDTV and modern devices, see <xref
+linkend="itu709" /></entry>
+ <entry>x = 0.640, y = 0.330</entry>
+ <entry>x = 0.300, y = 0.600</entry>
+ <entry>x = 0.150, y = 0.060</entry>
+ <entry>x = 0.3127, y = 0.3290,
+ Illuminant D<subscript>65</subscript></entry>
+ <entry>E' = 4.5 I for I ≤0.018,
+1.099 I<superscript>0.45</superscript> - 0.099 for 0.018 < I</entry>
+ <entry>0.2125 E'<subscript>R</subscript>
++ 0.7154 E'<subscript>G</subscript>
++ 0.0721 E'<subscript>B</subscript></entry>
+ <entry>219 E'<subscript>Y</subscript> + 16</entry>
+ <entry>224 P<subscript>B,R</subscript> + 128</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_COLORSPACE_BT878</constant></entry>
+ <entry>4</entry>
+ <entry>Broken Bt878 extents<footnote>
+ <para>The ubiquitous Bt878 video capture chip
+quantizes E'<subscript>Y</subscript> to 238 levels, yielding a range
+of Y' = 16 … 253, unlike Rec. 601 Y' = 16 …
+235. This is not a typo in the Bt878 documentation, it has been
+implemented in silicon. The chroma extents are unclear.</para>
+ </footnote>, <xref linkend="itu601" /></entry>
+ <entry>?</entry>
+ <entry>?</entry>
+ <entry>?</entry>
+ <entry>?</entry>
+ <entry>?</entry>
+ <entry>0.299 E'<subscript>R</subscript>
++ 0.587 E'<subscript>G</subscript>
++ 0.114 E'<subscript>B</subscript></entry>
+ <entry><emphasis>237</emphasis> E'<subscript>Y</subscript> + 16</entry>
+ <entry>224 P<subscript>B,R</subscript> + 128 (probably)</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_COLORSPACE_470_SYSTEM_M</constant></entry>
+ <entry>5</entry>
+ <entry>M/NTSC<footnote>
+ <para>No identifier exists for M/PAL which uses
+the chromaticities of M/NTSC, the remaining parameters are equal to B and
+G/PAL.</para>
+ </footnote> according to <xref linkend="itu470" />, <xref
+ linkend="itu601" /></entry>
+ <entry>x = 0.67, y = 0.33</entry>
+ <entry>x = 0.21, y = 0.71</entry>
+ <entry>x = 0.14, y = 0.08</entry>
+ <entry>x = 0.310, y = 0.316, Illuminant C</entry>
+ <entry>?</entry>
+ <entry>0.299 E'<subscript>R</subscript>
++ 0.587 E'<subscript>G</subscript>
++ 0.114 E'<subscript>B</subscript></entry>
+ <entry>219 E'<subscript>Y</subscript> + 16</entry>
+ <entry>224 P<subscript>B,R</subscript> + 128</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_COLORSPACE_470_SYSTEM_BG</constant></entry>
+ <entry>6</entry>
+ <entry>625-line PAL and SECAM systems according to <xref
+linkend="itu470" />, <xref linkend="itu601" /></entry>
+ <entry>x = 0.64, y = 0.33</entry>
+ <entry>x = 0.29, y = 0.60</entry>
+ <entry>x = 0.15, y = 0.06</entry>
+ <entry>x = 0.313, y = 0.329,
+Illuminant D<subscript>65</subscript></entry>
+ <entry>?</entry>
+ <entry>0.299 E'<subscript>R</subscript>
++ 0.587 E'<subscript>G</subscript>
++ 0.114 E'<subscript>B</subscript></entry>
+ <entry>219 E'<subscript>Y</subscript> + 16</entry>
+ <entry>224 P<subscript>B,R</subscript> + 128</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_COLORSPACE_JPEG</constant></entry>
+ <entry>7</entry>
+ <entry>JPEG Y'CbCr, see <xref linkend="jfif" />, <xref linkend="itu601" /></entry>
+ <entry>?</entry>
+ <entry>?</entry>
+ <entry>?</entry>
+ <entry>?</entry>
+ <entry>?</entry>
+ <entry>0.299 E'<subscript>R</subscript>
++ 0.587 E'<subscript>G</subscript>
++ 0.114 E'<subscript>B</subscript></entry>
+ <entry>256 E'<subscript>Y</subscript> + 16<footnote>
+ <para>Note JFIF quantizes
+Y'P<subscript>B</subscript>P<subscript>R</subscript> in range [0;+1] and
+[-0.5;+0.5] to <emphasis>257</emphasis> levels, however Y'CbCr signals
+are still clamped to [0;255].</para>
+ </footnote></entry>
+ <entry>256 P<subscript>B,R</subscript> + 128</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_COLORSPACE_SRGB</constant></entry>
+ <entry>8</entry>
+ <entry>[?]</entry>
+ <entry>x = 0.640, y = 0.330</entry>
+ <entry>x = 0.300, y = 0.600</entry>
+ <entry>x = 0.150, y = 0.060</entry>
+ <entry>x = 0.3127, y = 0.3290,
+ Illuminant D<subscript>65</subscript></entry>
+ <entry>E' = 4.5 I for I ≤0.018,
+1.099 I<superscript>0.45</superscript> - 0.099 for 0.018 < I</entry>
+ <entry spanname="spam">n/a</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+
+ <section id="pixfmt-indexed">
+ <title>Indexed Format</title>
+
+ <para>In this format each pixel is represented by an 8 bit index
+into a 256 entry ARGB palette. It is intended for <link
+linkend="osd">Video Output Overlays</link> only. There are no ioctls to
+access the palette, this must be done with ioctls of the Linux framebuffer API.</para>
+
+ <table pgwide="0" frame="none">
+ <title>Indexed Image Format</title>
+ <tgroup cols="37" align="center">
+ <colspec colname="id" align="left" />
+ <colspec colname="fourcc" />
+ <colspec colname="bit" />
+
+ <colspec colnum="4" colname="b07" align="center" />
+ <colspec colnum="5" colname="b06" align="center" />
+ <colspec colnum="6" colname="b05" align="center" />
+ <colspec colnum="7" colname="b04" align="center" />
+ <colspec colnum="8" colname="b03" align="center" />
+ <colspec colnum="9" colname="b02" align="center" />
+ <colspec colnum="10" colname="b01" align="center" />
+ <colspec colnum="11" colname="b00" align="center" />
+
+ <spanspec namest="b07" nameend="b00" spanname="b0" />
+ <spanspec namest="b17" nameend="b10" spanname="b1" />
+ <spanspec namest="b27" nameend="b20" spanname="b2" />
+ <spanspec namest="b37" nameend="b30" spanname="b3" />
+ <thead>
+ <row>
+ <entry>Identifier</entry>
+ <entry>Code</entry>
+ <entry> </entry>
+ <entry spanname="b0">Byte 0</entry>
+ </row>
+ <row>
+ <entry> </entry>
+ <entry> </entry>
+ <entry>Bit</entry>
+ <entry>7</entry>
+ <entry>6</entry>
+ <entry>5</entry>
+ <entry>4</entry>
+ <entry>3</entry>
+ <entry>2</entry>
+ <entry>1</entry>
+ <entry>0</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row id="V4L2-PIX-FMT-PAL8">
+ <entry><constant>V4L2_PIX_FMT_PAL8</constant></entry>
+ <entry>'PAL8'</entry>
+ <entry></entry>
+ <entry>i<subscript>7</subscript></entry>
+ <entry>i<subscript>6</subscript></entry>
+ <entry>i<subscript>5</subscript></entry>
+ <entry>i<subscript>4</subscript></entry>
+ <entry>i<subscript>3</subscript></entry>
+ <entry>i<subscript>2</subscript></entry>
+ <entry>i<subscript>1</subscript></entry>
+ <entry>i<subscript>0</subscript></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+
+ <section id="pixfmt-rgb">
+ <title>RGB Formats</title>
+
+ &sub-packed-rgb;
+ &sub-sbggr8;
+ &sub-sgbrg8;
+ &sub-sgrbg8;
+ &sub-srggb8;
+ &sub-sbggr16;
+ &sub-srggb10;
+ &sub-srggb12;
+ </section>
+
+ <section id="yuv-formats">
+ <title>YUV Formats</title>
+
+ <para>YUV is the format native to TV broadcast and composite video
+signals. It separates the brightness information (Y) from the color
+information (U and V or Cb and Cr). The color information consists of
+red and blue <emphasis>color difference</emphasis> signals, this way
+the green component can be reconstructed by subtracting from the
+brightness component. See <xref linkend="colorspaces" /> for conversion
+examples. YUV was chosen because early television would only transmit
+brightness information. To add color in a way compatible with existing
+receivers a new signal carrier was added to transmit the color
+difference signals. Secondary in the YUV format the U and V components
+usually have lower resolution than the Y component. This is an analog
+video compression technique taking advantage of a property of the
+human visual system, being more sensitive to brightness
+information.</para>
+
+ &sub-packed-yuv;
+ &sub-grey;
+ &sub-y10;
+ &sub-y12;
+ &sub-y10b;
+ &sub-y16;
+ &sub-yuyv;
+ &sub-uyvy;
+ &sub-yvyu;
+ &sub-vyuy;
+ &sub-y41p;
+ &sub-yuv420;
+ &sub-yuv420m;
+ &sub-yuv410;
+ &sub-yuv422p;
+ &sub-yuv411p;
+ &sub-nv12;
+ &sub-nv12m;
+ &sub-nv12mt;
+ &sub-nv16;
+ &sub-m420;
+ </section>
+
+ <section>
+ <title>Compressed Formats</title>
+
+ <table pgwide="1" frame="none" id="compressed-formats">
+ <title>Compressed Image Formats</title>
+ <tgroup cols="3" align="left">
+ &cs-def;
+ <thead>
+ <row>
+ <entry>Identifier</entry>
+ <entry>Code</entry>
+ <entry>Details</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row id="V4L2-PIX-FMT-JPEG">
+ <entry><constant>V4L2_PIX_FMT_JPEG</constant></entry>
+ <entry>'JPEG'</entry>
+ <entry>TBD. See also &VIDIOC-G-JPEGCOMP;,
+ &VIDIOC-S-JPEGCOMP;.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-MPEG">
+ <entry><constant>V4L2_PIX_FMT_MPEG</constant></entry>
+ <entry>'MPEG'</entry>
+ <entry>MPEG multiplexed stream. The actual format is determined by
+extended control <constant>V4L2_CID_MPEG_STREAM_TYPE</constant>, see
+<xref linkend="mpeg-control-id" />.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-H264">
+ <entry><constant>V4L2_PIX_FMT_H264</constant></entry>
+ <entry>'H264'</entry>
+ <entry>H264 video elementary stream with start codes.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-H264-NO-SC">
+ <entry><constant>V4L2_PIX_FMT_H264_NO_SC</constant></entry>
+ <entry>'AVC1'</entry>
+ <entry>H264 video elementary stream without start codes.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-H263">
+ <entry><constant>V4L2_PIX_FMT_H263</constant></entry>
+ <entry>'H263'</entry>
+ <entry>H263 video elementary stream.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-MPEG1">
+ <entry><constant>V4L2_PIX_FMT_MPEG1</constant></entry>
+ <entry>'MPG1'</entry>
+ <entry>MPEG1 video elementary stream.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-MPEG2">
+ <entry><constant>V4L2_PIX_FMT_MPEG2</constant></entry>
+ <entry>'MPG2'</entry>
+ <entry>MPEG2 video elementary stream.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-MPEG4">
+ <entry><constant>V4L2_PIX_FMT_MPEG4</constant></entry>
+ <entry>'MPG4'</entry>
+ <entry>MPEG4 video elementary stream.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-XVID">
+ <entry><constant>V4L2_PIX_FMT_XVID</constant></entry>
+ <entry>'XVID'</entry>
+ <entry>Xvid video elementary stream.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-VC1-ANNEX-G">
+ <entry><constant>V4L2_PIX_FMT_VC1_ANNEX_G</constant></entry>
+ <entry>'VC1G'</entry>
+ <entry>VC1, SMPTE 421M Annex G compliant stream.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-VC1-ANNEX-L">
+ <entry><constant>V4L2_PIX_FMT_VC1_ANNEX_L</constant></entry>
+ <entry>'VC1L'</entry>
+ <entry>VC1, SMPTE 421M Annex L compliant stream.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+
+ <section id="pixfmt-reserved">
+ <title>Reserved Format Identifiers</title>
+
+ <para>These formats are not defined by this specification, they
+are just listed for reference and to avoid naming conflicts. If you
+want to register your own format, send an e-mail to the linux-media mailing
+list &v4l-ml; for inclusion in the <filename>videodev2.h</filename>
+file. If you want to share your format with other developers add a
+link to your documentation and send a copy to the linux-media mailing list
+for inclusion in this section. If you think your format should be listed
+in a standard format section please make a proposal on the linux-media mailing
+list.</para>
+
+ <table pgwide="1" frame="none" id="reserved-formats">
+ <title>Reserved Image Formats</title>
+ <tgroup cols="3" align="left">
+ &cs-def;
+ <thead>
+ <row>
+ <entry>Identifier</entry>
+ <entry>Code</entry>
+ <entry>Details</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row id="V4L2-PIX-FMT-DV">
+ <entry><constant>V4L2_PIX_FMT_DV</constant></entry>
+ <entry>'dvsd'</entry>
+ <entry>unknown</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-ET61X251">
+ <entry><constant>V4L2_PIX_FMT_ET61X251</constant></entry>
+ <entry>'E625'</entry>
+ <entry>Compressed format of the ET61X251 driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-HI240">
+ <entry><constant>V4L2_PIX_FMT_HI240</constant></entry>
+ <entry>'HI24'</entry>
+ <entry><para>8 bit RGB format used by the BTTV driver.</para></entry>
+ </row>
+ <row id="V4L2-PIX-FMT-HM12">
+ <entry><constant>V4L2_PIX_FMT_HM12</constant></entry>
+ <entry>'HM12'</entry>
+ <entry><para>YUV 4:2:0 format used by the
+IVTV driver, <ulink url="http://www.ivtvdriver.org/">
+http://www.ivtvdriver.org/</ulink></para><para>The format is documented in the
+kernel sources in the file <filename>Documentation/video4linux/cx2341x/README.hm12</filename>
+</para></entry>
+ </row>
+ <row id="V4L2-PIX-FMT-CPIA1">
+ <entry><constant>V4L2_PIX_FMT_CPIA1</constant></entry>
+ <entry>'CPIA'</entry>
+ <entry>YUV format used by the gspca cpia1 driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-JPGL">
+ <entry><constant>V4L2_PIX_FMT_JPGL</constant></entry>
+ <entry>'JPGL'</entry>
+ <entry>JPEG-Light format (Pegasus Lossless JPEG)
+ used in Divio webcams NW 80x.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-SPCA501">
+ <entry><constant>V4L2_PIX_FMT_SPCA501</constant></entry>
+ <entry>'S501'</entry>
+ <entry>YUYV per line used by the gspca driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-SPCA505">
+ <entry><constant>V4L2_PIX_FMT_SPCA505</constant></entry>
+ <entry>'S505'</entry>
+ <entry>YYUV per line used by the gspca driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-SPCA508">
+ <entry><constant>V4L2_PIX_FMT_SPCA508</constant></entry>
+ <entry>'S508'</entry>
+ <entry>YUVY per line used by the gspca driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-SPCA561">
+ <entry><constant>V4L2_PIX_FMT_SPCA561</constant></entry>
+ <entry>'S561'</entry>
+ <entry>Compressed GBRG Bayer format used by the gspca driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-SGRBG10DPCM8">
+ <entry><constant>V4L2_PIX_FMT_SGRBG10DPCM8</constant></entry>
+ <entry>'DB10'</entry>
+ <entry>10 bit raw Bayer DPCM compressed to 8 bits.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-PAC207">
+ <entry><constant>V4L2_PIX_FMT_PAC207</constant></entry>
+ <entry>'P207'</entry>
+ <entry>Compressed BGGR Bayer format used by the gspca driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-MR97310A">
+ <entry><constant>V4L2_PIX_FMT_MR97310A</constant></entry>
+ <entry>'M310'</entry>
+ <entry>Compressed BGGR Bayer format used by the gspca driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-OV511">
+ <entry><constant>V4L2_PIX_FMT_OV511</constant></entry>
+ <entry>'O511'</entry>
+ <entry>OV511 JPEG format used by the gspca driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-OV518">
+ <entry><constant>V4L2_PIX_FMT_OV518</constant></entry>
+ <entry>'O518'</entry>
+ <entry>OV518 JPEG format used by the gspca driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-PJPG">
+ <entry><constant>V4L2_PIX_FMT_PJPG</constant></entry>
+ <entry>'PJPG'</entry>
+ <entry>Pixart 73xx JPEG format used by the gspca driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-SE401">
+ <entry><constant>V4L2_PIX_FMT_SE401</constant></entry>
+ <entry>'S401'</entry>
+ <entry>Compressed RGB format used by the gspca se401 driver</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-SQ905C">
+ <entry><constant>V4L2_PIX_FMT_SQ905C</constant></entry>
+ <entry>'905C'</entry>
+ <entry>Compressed RGGB bayer format used by the gspca driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-MJPEG">
+ <entry><constant>V4L2_PIX_FMT_MJPEG</constant></entry>
+ <entry>'MJPG'</entry>
+ <entry>Compressed format used by the Zoran driver</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-PWC1">
+ <entry><constant>V4L2_PIX_FMT_PWC1</constant></entry>
+ <entry>'PWC1'</entry>
+ <entry>Compressed format of the PWC driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-PWC2">
+ <entry><constant>V4L2_PIX_FMT_PWC2</constant></entry>
+ <entry>'PWC2'</entry>
+ <entry>Compressed format of the PWC driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-SN9C10X">
+ <entry><constant>V4L2_PIX_FMT_SN9C10X</constant></entry>
+ <entry>'S910'</entry>
+ <entry>Compressed format of the SN9C102 driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-SN9C20X-I420">
+ <entry><constant>V4L2_PIX_FMT_SN9C20X_I420</constant></entry>
+ <entry>'S920'</entry>
+ <entry>YUV 4:2:0 format of the gspca sn9c20x driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-SN9C2028">
+ <entry><constant>V4L2_PIX_FMT_SN9C2028</constant></entry>
+ <entry>'SONX'</entry>
+ <entry>Compressed GBRG bayer format of the gspca sn9c2028 driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-STV0680">
+ <entry><constant>V4L2_PIX_FMT_STV0680</constant></entry>
+ <entry>'S680'</entry>
+ <entry>Bayer format of the gspca stv0680 driver.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-WNVA">
+ <entry><constant>V4L2_PIX_FMT_WNVA</constant></entry>
+ <entry>'WNVA'</entry>
+ <entry><para>Used by the Winnov Videum driver, <ulink
+url="http://www.thedirks.org/winnov/">
+http://www.thedirks.org/winnov/</ulink></para></entry>
+ </row>
+ <row id="V4L2-PIX-FMT-TM6000">
+ <entry><constant>V4L2_PIX_FMT_TM6000</constant></entry>
+ <entry>'TM60'</entry>
+ <entry><para>Used by Trident tm6000</para></entry>
+ </row>
+ <row id="V4L2-PIX-FMT-CIT-YYVYUY">
+ <entry><constant>V4L2_PIX_FMT_CIT_YYVYUY</constant></entry>
+ <entry>'CITV'</entry>
+ <entry><para>Used by xirlink CIT, found at IBM webcams.</para>
+ <para>Uses one line of Y then 1 line of VYUY</para>
+ </entry>
+ </row>
+ <row id="V4L2-PIX-FMT-KONICA420">
+ <entry><constant>V4L2_PIX_FMT_KONICA420</constant></entry>
+ <entry>'KONI'</entry>
+ <entry><para>Used by Konica webcams.</para>
+ <para>YUV420 planar in blocks of 256 pixels.</para>
+ </entry>
+ </row>
+ <row id="V4L2-PIX-FMT-YYUV">
+ <entry><constant>V4L2_PIX_FMT_YYUV</constant></entry>
+ <entry>'YYUV'</entry>
+ <entry>unknown</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-Y4">
+ <entry><constant>V4L2_PIX_FMT_Y4</constant></entry>
+ <entry>'Y04 '</entry>
+ <entry>Old 4-bit greyscale format. Only the least significant 4 bits of each byte are used,
+the other bits are set to 0.</entry>
+ </row>
+ <row id="V4L2-PIX-FMT-Y6">
+ <entry><constant>V4L2_PIX_FMT_Y6</constant></entry>
+ <entry>'Y06 '</entry>
+ <entry>Old 6-bit greyscale format. Only the least significant 6 bits of each byte are used,
+the other bits are set to 0.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+
+ <!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "v4l2.sgml"
+indent-tabs-mode: nil
+End:
+ -->
diff --git a/Documentation/DocBook/v4l/planar-apis.xml b/Documentation/DocBook/media/v4l/planar-apis.xml
similarity index 100%
rename from Documentation/DocBook/v4l/planar-apis.xml
rename to Documentation/DocBook/media/v4l/planar-apis.xml
diff --git a/Documentation/DocBook/v4l/remote_controllers.xml b/Documentation/DocBook/media/v4l/remote_controllers.xml
similarity index 100%
rename from Documentation/DocBook/v4l/remote_controllers.xml
rename to Documentation/DocBook/media/v4l/remote_controllers.xml
diff --git a/Documentation/DocBook/media/v4l/subdev-formats.xml b/Documentation/DocBook/media/v4l/subdev-formats.xml
new file mode 100644
index 0000000..49c532e
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/subdev-formats.xml
@@ -0,0 +1,2569 @@
+<section id="v4l2-mbus-format">
+ <title>Media Bus Formats</title>
+
+ <table pgwide="1" frame="none" id="v4l2-mbus-framefmt">
+ <title>struct <structname>v4l2_mbus_framefmt</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>width</structfield></entry>
+ <entry>Image width, in pixels.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>height</structfield></entry>
+ <entry>Image height, in pixels.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>code</structfield></entry>
+ <entry>Format code, from &v4l2-mbus-pixelcode;.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>field</structfield></entry>
+ <entry>Field order, from &v4l2-field;. See
+ <xref linkend="field-order" /> for details.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>colorspace</structfield></entry>
+ <entry>Image colorspace, from &v4l2-colorspace;. See
+ <xref linkend="colorspaces" /> for details.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[7]</entry>
+ <entry>Reserved for future extensions. Applications and drivers must
+ set the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <section id="v4l2-mbus-pixelcode">
+ <title>Media Bus Pixel Codes</title>
+
+ <para>The media bus pixel codes describe image formats as flowing over
+ physical busses (both between separate physical components and inside SoC
+ devices). This should not be confused with the V4L2 pixel formats that
+ describe, using four character codes, image formats as stored in memory.
+ </para>
+
+ <para>While there is a relationship between image formats on busses and
+ image formats in memory (a raw Bayer image won't be magically converted to
+ JPEG just by storing it to memory), there is no one-to-one correspondance
+ between them.</para>
+
+ <section>
+ <title>Packed RGB Formats</title>
+
+ <para>Those formats transfer pixel data as red, green and blue components.
+ The format code is made of the following information.
+ <itemizedlist>
+ <listitem><para>The red, green and blue components order code, as encoded in a
+ pixel sample. Possible values are RGB and BGR.</para></listitem>
+ <listitem><para>The number of bits per component, for each component. The values
+ can be different for all components. Common values are 555 and 565.</para>
+ </listitem>
+ <listitem><para>The number of bus samples per pixel. Pixels that are wider than
+ the bus width must be transferred in multiple samples. Common values are
+ 1 and 2.</para></listitem>
+ <listitem><para>The bus width.</para></listitem>
+ <listitem><para>For formats where the total number of bits per pixel is smaller
+ than the number of bus samples per pixel times the bus width, a padding
+ value stating if the bytes are padded in their most high order bits
+ (PADHI) or low order bits (PADLO).</para></listitem>
+ <listitem><para>For formats where the number of bus samples per pixel is larger
+ than 1, an endianness value stating if the pixel is transferred MSB first
+ (BE) or LSB first (LE).</para></listitem>
+ </itemizedlist>
+ </para>
+
+ <para>For instance, a format where pixels are encoded as 5-bits red, 5-bits
+ green and 5-bit blue values padded on the high bit, transferred as 2 8-bit
+ samples per pixel with the most significant bits (padding, red and half of
+ the green value) transferred first will be named
+ <constant>V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE</constant>.
+ </para>
+
+ <para>The following tables list existing packet RGB formats.</para>
+
+ <table pgwide="0" frame="none" id="v4l2-mbus-pixelcode-rgb">
+ <title>RGB formats</title>
+ <tgroup cols="11">
+ <colspec colname="id" align="left" />
+ <colspec colname="code" align="center"/>
+ <colspec colname="bit" />
+ <colspec colnum="4" colname="b07" align="center" />
+ <colspec colnum="5" colname="b06" align="center" />
+ <colspec colnum="6" colname="b05" align="center" />
+ <colspec colnum="7" colname="b04" align="center" />
+ <colspec colnum="8" colname="b03" align="center" />
+ <colspec colnum="9" colname="b02" align="center" />
+ <colspec colnum="10" colname="b01" align="center" />
+ <colspec colnum="11" colname="b00" align="center" />
+ <spanspec namest="b07" nameend="b00" spanname="b0" />
+ <thead>
+ <row>
+ <entry>Identifier</entry>
+ <entry>Code</entry>
+ <entry></entry>
+ <entry spanname="b0">Data organization</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry>Bit</entry>
+ <entry>7</entry>
+ <entry>6</entry>
+ <entry>5</entry>
+ <entry>4</entry>
+ <entry>3</entry>
+ <entry>2</entry>
+ <entry>1</entry>
+ <entry>0</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row id="V4L2-MBUS-FMT-RGB444-2X8-PADHI-BE">
+ <entry>V4L2_MBUS_FMT_RGB444_2X8_PADHI_BE</entry>
+ <entry>0x1001</entry>
+ <entry></entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>r<subscript>3</subscript></entry>
+ <entry>r<subscript>2</subscript></entry>
+ <entry>r<subscript>1</subscript></entry>
+ <entry>r<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>g<subscript>3</subscript></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-RGB444-2X8-PADHI-LE">
+ <entry>V4L2_MBUS_FMT_RGB444_2X8_PADHI_LE</entry>
+ <entry>0x1002</entry>
+ <entry></entry>
+ <entry>g<subscript>3</subscript></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>r<subscript>3</subscript></entry>
+ <entry>r<subscript>2</subscript></entry>
+ <entry>r<subscript>1</subscript></entry>
+ <entry>r<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-RGB555-2X8-PADHI-BE">
+ <entry>V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE</entry>
+ <entry>0x1003</entry>
+ <entry></entry>
+ <entry>0</entry>
+ <entry>r<subscript>4</subscript></entry>
+ <entry>r<subscript>3</subscript></entry>
+ <entry>r<subscript>2</subscript></entry>
+ <entry>r<subscript>1</subscript></entry>
+ <entry>r<subscript>0</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-RGB555-2X8-PADHI-LE">
+ <entry>V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE</entry>
+ <entry>0x1004</entry>
+ <entry></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>0</entry>
+ <entry>r<subscript>4</subscript></entry>
+ <entry>r<subscript>3</subscript></entry>
+ <entry>r<subscript>2</subscript></entry>
+ <entry>r<subscript>1</subscript></entry>
+ <entry>r<subscript>0</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-BGR565-2X8-BE">
+ <entry>V4L2_MBUS_FMT_BGR565_2X8_BE</entry>
+ <entry>0x1005</entry>
+ <entry></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ <entry>g<subscript>5</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ <entry>r<subscript>4</subscript></entry>
+ <entry>r<subscript>3</subscript></entry>
+ <entry>r<subscript>2</subscript></entry>
+ <entry>r<subscript>1</subscript></entry>
+ <entry>r<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-BGR565-2X8-LE">
+ <entry>V4L2_MBUS_FMT_BGR565_2X8_LE</entry>
+ <entry>0x1006</entry>
+ <entry></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ <entry>r<subscript>4</subscript></entry>
+ <entry>r<subscript>3</subscript></entry>
+ <entry>r<subscript>2</subscript></entry>
+ <entry>r<subscript>1</subscript></entry>
+ <entry>r<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ <entry>g<subscript>5</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-RGB565-2X8-BE">
+ <entry>V4L2_MBUS_FMT_RGB565_2X8_BE</entry>
+ <entry>0x1007</entry>
+ <entry></entry>
+ <entry>r<subscript>4</subscript></entry>
+ <entry>r<subscript>3</subscript></entry>
+ <entry>r<subscript>2</subscript></entry>
+ <entry>r<subscript>1</subscript></entry>
+ <entry>r<subscript>0</subscript></entry>
+ <entry>g<subscript>5</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-RGB565-2X8-LE">
+ <entry>V4L2_MBUS_FMT_RGB565_2X8_LE</entry>
+ <entry>0x1008</entry>
+ <entry></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>r<subscript>4</subscript></entry>
+ <entry>r<subscript>3</subscript></entry>
+ <entry>r<subscript>2</subscript></entry>
+ <entry>r<subscript>1</subscript></entry>
+ <entry>r<subscript>0</subscript></entry>
+ <entry>g<subscript>5</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+
+ <section>
+ <title>Bayer Formats</title>
+
+ <para>Those formats transfer pixel data as red, green and blue components.
+ The format code is made of the following information.
+ <itemizedlist>
+ <listitem><para>The red, green and blue components order code, as encoded in a
+ pixel sample. The possible values are shown in <xref
+ linkend="bayer-patterns" />.</para></listitem>
+ <listitem><para>The number of bits per pixel component. All components are
+ transferred on the same number of bits. Common values are 8, 10 and 12.</para>
+ </listitem>
+ <listitem><para>If the pixel components are DPCM-compressed, a mention of the
+ DPCM compression and the number of bits per compressed pixel component.</para>
+ </listitem>
+ <listitem><para>The number of bus samples per pixel. Pixels that are wider than
+ the bus width must be transferred in multiple samples. Common values are
+ 1 and 2.</para></listitem>
+ <listitem><para>The bus width.</para></listitem>
+ <listitem><para>For formats where the total number of bits per pixel is smaller
+ than the number of bus samples per pixel times the bus width, a padding
+ value stating if the bytes are padded in their most high order bits
+ (PADHI) or low order bits (PADLO).</para></listitem>
+ <listitem><para>For formats where the number of bus samples per pixel is larger
+ than 1, an endianness value stating if the pixel is transferred MSB first
+ (BE) or LSB first (LE).</para></listitem>
+ </itemizedlist>
+ </para>
+
+ <para>For instance, a format with uncompressed 10-bit Bayer components
+ arranged in a red, green, green, blue pattern transferred as 2 8-bit
+ samples per pixel with the least significant bits transferred first will
+ be named <constant>V4L2_MBUS_FMT_SRGGB10_2X8_PADHI_LE</constant>.
+ </para>
+
+ <figure id="bayer-patterns">
+ <title>Bayer Patterns</title>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="bayer.png" format="PNG" />
+ </imageobject>
+ <textobject>
+ <phrase>Bayer filter color patterns</phrase>
+ </textobject>
+ </mediaobject>
+ </figure>
+
+ <para>The following table lists existing packet Bayer formats. The data
+ organization is given as an example for the first pixel only.</para>
+
+ <table pgwide="0" frame="none" id="v4l2-mbus-pixelcode-bayer">
+ <title>Bayer Formats</title>
+ <tgroup cols="15">
+ <colspec colname="id" align="left" />
+ <colspec colname="code" align="center"/>
+ <colspec colname="bit" />
+ <colspec colnum="4" colname="b11" align="center" />
+ <colspec colnum="5" colname="b10" align="center" />
+ <colspec colnum="6" colname="b09" align="center" />
+ <colspec colnum="7" colname="b08" align="center" />
+ <colspec colnum="8" colname="b07" align="center" />
+ <colspec colnum="9" colname="b06" align="center" />
+ <colspec colnum="10" colname="b05" align="center" />
+ <colspec colnum="11" colname="b04" align="center" />
+ <colspec colnum="12" colname="b03" align="center" />
+ <colspec colnum="13" colname="b02" align="center" />
+ <colspec colnum="14" colname="b01" align="center" />
+ <colspec colnum="15" colname="b00" align="center" />
+ <spanspec namest="b11" nameend="b00" spanname="b0" />
+ <thead>
+ <row>
+ <entry>Identifier</entry>
+ <entry>Code</entry>
+ <entry></entry>
+ <entry spanname="b0">Data organization</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry>Bit</entry>
+ <entry>11</entry>
+ <entry>10</entry>
+ <entry>9</entry>
+ <entry>8</entry>
+ <entry>7</entry>
+ <entry>6</entry>
+ <entry>5</entry>
+ <entry>4</entry>
+ <entry>3</entry>
+ <entry>2</entry>
+ <entry>1</entry>
+ <entry>0</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row id="V4L2-MBUS-FMT-SBGGR8-1X8">
+ <entry>V4L2_MBUS_FMT_SBGGR8_1X8</entry>
+ <entry>0x3001</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>b<subscript>7</subscript></entry>
+ <entry>b<subscript>6</subscript></entry>
+ <entry>b<subscript>5</subscript></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SGBRG8-1X8">
+ <entry>V4L2_MBUS_FMT_SGBRG8_1X8</entry>
+ <entry>0x3013</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>g<subscript>7</subscript></entry>
+ <entry>g<subscript>6</subscript></entry>
+ <entry>g<subscript>5</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SGRBG8-1X8">
+ <entry>V4L2_MBUS_FMT_SGRBG8_1X8</entry>
+ <entry>0x3002</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>g<subscript>7</subscript></entry>
+ <entry>g<subscript>6</subscript></entry>
+ <entry>g<subscript>5</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SRGGB8-1X8">
+ <entry>V4L2_MBUS_FMT_SRGGB8_1X8</entry>
+ <entry>0x3014</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>r<subscript>7</subscript></entry>
+ <entry>r<subscript>6</subscript></entry>
+ <entry>r<subscript>5</subscript></entry>
+ <entry>r<subscript>4</subscript></entry>
+ <entry>r<subscript>3</subscript></entry>
+ <entry>r<subscript>2</subscript></entry>
+ <entry>r<subscript>1</subscript></entry>
+ <entry>r<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SBGGR10-DPCM8-1X8">
+ <entry>V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8</entry>
+ <entry>0x300b</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>b<subscript>7</subscript></entry>
+ <entry>b<subscript>6</subscript></entry>
+ <entry>b<subscript>5</subscript></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SGBRG10-DPCM8-1X8">
+ <entry>V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8</entry>
+ <entry>0x300c</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>g<subscript>7</subscript></entry>
+ <entry>g<subscript>6</subscript></entry>
+ <entry>g<subscript>5</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SGRBG10-DPCM8-1X8">
+ <entry>V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8</entry>
+ <entry>0x3009</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>g<subscript>7</subscript></entry>
+ <entry>g<subscript>6</subscript></entry>
+ <entry>g<subscript>5</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SRGGB10-DPCM8-1X8">
+ <entry>V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8</entry>
+ <entry>0x300d</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>r<subscript>7</subscript></entry>
+ <entry>r<subscript>6</subscript></entry>
+ <entry>r<subscript>5</subscript></entry>
+ <entry>r<subscript>4</subscript></entry>
+ <entry>r<subscript>3</subscript></entry>
+ <entry>r<subscript>2</subscript></entry>
+ <entry>r<subscript>1</subscript></entry>
+ <entry>r<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SBGGR10-2X8-PADHI-BE">
+ <entry>V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE</entry>
+ <entry>0x3003</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>b<subscript>9</subscript></entry>
+ <entry>b<subscript>8</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>b<subscript>7</subscript></entry>
+ <entry>b<subscript>6</subscript></entry>
+ <entry>b<subscript>5</subscript></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SBGGR10-2X8-PADHI-LE">
+ <entry>V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE</entry>
+ <entry>0x3004</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>b<subscript>7</subscript></entry>
+ <entry>b<subscript>6</subscript></entry>
+ <entry>b<subscript>5</subscript></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>b<subscript>9</subscript></entry>
+ <entry>b<subscript>8</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SBGGR10-2X8-PADLO-BE">
+ <entry>V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE</entry>
+ <entry>0x3005</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>b<subscript>9</subscript></entry>
+ <entry>b<subscript>8</subscript></entry>
+ <entry>b<subscript>7</subscript></entry>
+ <entry>b<subscript>6</subscript></entry>
+ <entry>b<subscript>5</subscript></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SBGGR10-2X8-PADLO-LE">
+ <entry>V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE</entry>
+ <entry>0x3006</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>b<subscript>9</subscript></entry>
+ <entry>b<subscript>8</subscript></entry>
+ <entry>b<subscript>7</subscript></entry>
+ <entry>b<subscript>6</subscript></entry>
+ <entry>b<subscript>5</subscript></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SBGGR10-1X10">
+ <entry>V4L2_MBUS_FMT_SBGGR10_1X10</entry>
+ <entry>0x3007</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>b<subscript>9</subscript></entry>
+ <entry>b<subscript>8</subscript></entry>
+ <entry>b<subscript>7</subscript></entry>
+ <entry>b<subscript>6</subscript></entry>
+ <entry>b<subscript>5</subscript></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SGBRG10-1X10">
+ <entry>V4L2_MBUS_FMT_SGBRG10_1X10</entry>
+ <entry>0x300e</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>g<subscript>9</subscript></entry>
+ <entry>g<subscript>8</subscript></entry>
+ <entry>g<subscript>7</subscript></entry>
+ <entry>g<subscript>6</subscript></entry>
+ <entry>g<subscript>5</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SGRBG10-1X10">
+ <entry>V4L2_MBUS_FMT_SGRBG10_1X10</entry>
+ <entry>0x300a</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>g<subscript>9</subscript></entry>
+ <entry>g<subscript>8</subscript></entry>
+ <entry>g<subscript>7</subscript></entry>
+ <entry>g<subscript>6</subscript></entry>
+ <entry>g<subscript>5</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SRGGB10-1X10">
+ <entry>V4L2_MBUS_FMT_SRGGB10_1X10</entry>
+ <entry>0x300f</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>r<subscript>9</subscript></entry>
+ <entry>r<subscript>8</subscript></entry>
+ <entry>r<subscript>7</subscript></entry>
+ <entry>r<subscript>6</subscript></entry>
+ <entry>r<subscript>5</subscript></entry>
+ <entry>r<subscript>4</subscript></entry>
+ <entry>r<subscript>3</subscript></entry>
+ <entry>r<subscript>2</subscript></entry>
+ <entry>r<subscript>1</subscript></entry>
+ <entry>r<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SBGGR12-1X12">
+ <entry>V4L2_MBUS_FMT_SBGGR12_1X12</entry>
+ <entry>0x3008</entry>
+ <entry></entry>
+ <entry>b<subscript>11</subscript></entry>
+ <entry>b<subscript>10</subscript></entry>
+ <entry>b<subscript>9</subscript></entry>
+ <entry>b<subscript>8</subscript></entry>
+ <entry>b<subscript>7</subscript></entry>
+ <entry>b<subscript>6</subscript></entry>
+ <entry>b<subscript>5</subscript></entry>
+ <entry>b<subscript>4</subscript></entry>
+ <entry>b<subscript>3</subscript></entry>
+ <entry>b<subscript>2</subscript></entry>
+ <entry>b<subscript>1</subscript></entry>
+ <entry>b<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SGBRG12-1X12">
+ <entry>V4L2_MBUS_FMT_SGBRG12_1X12</entry>
+ <entry>0x3010</entry>
+ <entry></entry>
+ <entry>g<subscript>11</subscript></entry>
+ <entry>g<subscript>10</subscript></entry>
+ <entry>g<subscript>9</subscript></entry>
+ <entry>g<subscript>8</subscript></entry>
+ <entry>g<subscript>7</subscript></entry>
+ <entry>g<subscript>6</subscript></entry>
+ <entry>g<subscript>5</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SGRBG12-1X12">
+ <entry>V4L2_MBUS_FMT_SGRBG12_1X12</entry>
+ <entry>0x3011</entry>
+ <entry></entry>
+ <entry>g<subscript>11</subscript></entry>
+ <entry>g<subscript>10</subscript></entry>
+ <entry>g<subscript>9</subscript></entry>
+ <entry>g<subscript>8</subscript></entry>
+ <entry>g<subscript>7</subscript></entry>
+ <entry>g<subscript>6</subscript></entry>
+ <entry>g<subscript>5</subscript></entry>
+ <entry>g<subscript>4</subscript></entry>
+ <entry>g<subscript>3</subscript></entry>
+ <entry>g<subscript>2</subscript></entry>
+ <entry>g<subscript>1</subscript></entry>
+ <entry>g<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-SRGGB12-1X12">
+ <entry>V4L2_MBUS_FMT_SRGGB12_1X12</entry>
+ <entry>0x3012</entry>
+ <entry></entry>
+ <entry>r<subscript>11</subscript></entry>
+ <entry>r<subscript>10</subscript></entry>
+ <entry>r<subscript>9</subscript></entry>
+ <entry>r<subscript>8</subscript></entry>
+ <entry>r<subscript>7</subscript></entry>
+ <entry>r<subscript>6</subscript></entry>
+ <entry>r<subscript>5</subscript></entry>
+ <entry>r<subscript>4</subscript></entry>
+ <entry>r<subscript>3</subscript></entry>
+ <entry>r<subscript>2</subscript></entry>
+ <entry>r<subscript>1</subscript></entry>
+ <entry>r<subscript>0</subscript></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+
+ <section>
+ <title>Packed YUV Formats</title>
+
+ <para>Those data formats transfer pixel data as (possibly downsampled) Y, U
+ and V components. The format code is made of the following information.
+ <itemizedlist>
+ <listitem><para>The Y, U and V components order code, as transferred on the
+ bus. Possible values are YUYV, UYVY, YVYU and VYUY.</para></listitem>
+ <listitem><para>The number of bits per pixel component. All components are
+ transferred on the same number of bits. Common values are 8, 10 and 12.</para>
+ </listitem>
+ <listitem><para>The number of bus samples per pixel. Pixels that are wider than
+ the bus width must be transferred in multiple samples. Common values are
+ 1, 1.5 (encoded as 1_5) and 2.</para></listitem>
+ <listitem><para>The bus width. When the bus width is larger than the number of
+ bits per pixel component, several components are packed in a single bus
+ sample. The components are ordered as specified by the order code, with
+ components on the left of the code transferred in the high order bits.
+ Common values are 8 and 16.</para>
+ </listitem>
+ </itemizedlist>
+ </para>
+
+ <para>For instance, a format where pixels are encoded as 8-bit YUV values
+ downsampled to 4:2:2 and transferred as 2 8-bit bus samples per pixel in the
+ U, Y, V, Y order will be named <constant>V4L2_MBUS_FMT_UYVY8_2X8</constant>.
+ </para>
+
+ <para>The following table lisst existing packet YUV formats.</para>
+
+ <table pgwide="0" frame="none" id="v4l2-mbus-pixelcode-yuv8">
+ <title>YUV Formats</title>
+ <tgroup cols="23">
+ <colspec colname="id" align="left" />
+ <colspec colname="code" align="center"/>
+ <colspec colname="bit" />
+ <colspec colnum="4" colname="b19" align="center" />
+ <colspec colnum="5" colname="b18" align="center" />
+ <colspec colnum="6" colname="b17" align="center" />
+ <colspec colnum="7" colname="b16" align="center" />
+ <colspec colnum="8" colname="b15" align="center" />
+ <colspec colnum="9" colname="b14" align="center" />
+ <colspec colnum="10" colname="b13" align="center" />
+ <colspec colnum="11" colname="b12" align="center" />
+ <colspec colnum="12" colname="b11" align="center" />
+ <colspec colnum="13" colname="b10" align="center" />
+ <colspec colnum="14" colname="b09" align="center" />
+ <colspec colnum="15" colname="b08" align="center" />
+ <colspec colnum="16" colname="b07" align="center" />
+ <colspec colnum="17" colname="b06" align="center" />
+ <colspec colnum="18" colname="b05" align="center" />
+ <colspec colnum="19" colname="b04" align="center" />
+ <colspec colnum="20" colname="b03" align="center" />
+ <colspec colnum="21" colname="b02" align="center" />
+ <colspec colnum="22" colname="b01" align="center" />
+ <colspec colnum="23" colname="b00" align="center" />
+ <spanspec namest="b19" nameend="b00" spanname="b0" />
+ <thead>
+ <row>
+ <entry>Identifier</entry>
+ <entry>Code</entry>
+ <entry></entry>
+ <entry spanname="b0">Data organization</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry>Bit</entry>
+ <entry>19</entry>
+ <entry>18</entry>
+ <entry>17</entry>
+ <entry>16</entry>
+ <entry>15</entry>
+ <entry>14</entry>
+ <entry>13</entry>
+ <entry>12</entry>
+ <entry>11</entry>
+ <entry>10</entry>
+ <entry>9</entry>
+ <entry>8</entry>
+ <entry>7</entry>
+ <entry>6</entry>
+ <entry>5</entry>
+ <entry>4</entry>
+ <entry>3</entry>
+ <entry>2</entry>
+ <entry>1</entry>
+ <entry>0</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row id="V4L2-MBUS-FMT-Y8-1X8">
+ <entry>V4L2_MBUS_FMT_Y8_1X8</entry>
+ <entry>0x2001</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-UYVY8-1_5X8">
+ <entry>V4L2_MBUS_FMT_UYVY8_1_5X8</entry>
+ <entry>0x2002</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-VYUY8-1_5X8">
+ <entry>V4L2_MBUS_FMT_VYUY8_1_5X8</entry>
+ <entry>0x2003</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-YUYV8-1_5X8">
+ <entry>V4L2_MBUS_FMT_YUYV8_1_5X8</entry>
+ <entry>0x2004</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-YVYU8-1_5X8">
+ <entry>V4L2_MBUS_FMT_YVYU8_1_5X8</entry>
+ <entry>0x2005</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-UYVY8-2X8">
+ <entry>V4L2_MBUS_FMT_UYVY8_2X8</entry>
+ <entry>0x2006</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-VYUY8-2X8">
+ <entry>V4L2_MBUS_FMT_VYUY8_2X8</entry>
+ <entry>0x2007</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-YUYV8-2X8">
+ <entry>V4L2_MBUS_FMT_YUYV8_2X8</entry>
+ <entry>0x2008</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-YVYU8-2X8">
+ <entry>V4L2_MBUS_FMT_YVYU8_2X8</entry>
+ <entry>0x2009</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-Y10-1X10">
+ <entry>V4L2_MBUS_FMT_Y10_1X10</entry>
+ <entry>0x200a</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>9</subscript></entry>
+ <entry>y<subscript>8</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-YUYV10-2X10">
+ <entry>V4L2_MBUS_FMT_YUYV10_2X10</entry>
+ <entry>0x200b</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>9</subscript></entry>
+ <entry>y<subscript>8</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>u<subscript>9</subscript></entry>
+ <entry>u<subscript>8</subscript></entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>9</subscript></entry>
+ <entry>y<subscript>8</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>v<subscript>9</subscript></entry>
+ <entry>v<subscript>8</subscript></entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-YVYU10-2X10">
+ <entry>V4L2_MBUS_FMT_YVYU10_2X10</entry>
+ <entry>0x200c</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>9</subscript></entry>
+ <entry>y<subscript>8</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>v<subscript>9</subscript></entry>
+ <entry>v<subscript>8</subscript></entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>9</subscript></entry>
+ <entry>y<subscript>8</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>u<subscript>9</subscript></entry>
+ <entry>u<subscript>8</subscript></entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-Y12-1X12">
+ <entry>V4L2_MBUS_FMT_Y12_1X12</entry>
+ <entry>0x2013</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>11</subscript></entry>
+ <entry>y<subscript>10</subscript></entry>
+ <entry>y<subscript>9</subscript></entry>
+ <entry>y<subscript>8</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-UYVY8-1X16">
+ <entry>V4L2_MBUS_FMT_UYVY8_1X16</entry>
+ <entry>0x200f</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-VYUY8-1X16">
+ <entry>V4L2_MBUS_FMT_VYUY8_1X16</entry>
+ <entry>0x2010</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-YUYV8-1X16">
+ <entry>V4L2_MBUS_FMT_YUYV8_1X16</entry>
+ <entry>0x2011</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-YVYU8-1X16">
+ <entry>V4L2_MBUS_FMT_YVYU8_1X16</entry>
+ <entry>0x2012</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-YUYV10-1X20">
+ <entry>V4L2_MBUS_FMT_YUYV10_1X20</entry>
+ <entry>0x200d</entry>
+ <entry></entry>
+ <entry>y<subscript>9</subscript></entry>
+ <entry>y<subscript>8</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ <entry>u<subscript>9</subscript></entry>
+ <entry>u<subscript>8</subscript></entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>y<subscript>9</subscript></entry>
+ <entry>y<subscript>8</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ <entry>v<subscript>9</subscript></entry>
+ <entry>v<subscript>8</subscript></entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-MBUS-FMT-YVYU10-1X20">
+ <entry>V4L2_MBUS_FMT_YVYU10_1X20</entry>
+ <entry>0x200e</entry>
+ <entry></entry>
+ <entry>y<subscript>9</subscript></entry>
+ <entry>y<subscript>8</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ <entry>v<subscript>9</subscript></entry>
+ <entry>v<subscript>8</subscript></entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>y<subscript>9</subscript></entry>
+ <entry>y<subscript>8</subscript></entry>
+ <entry>y<subscript>7</subscript></entry>
+ <entry>y<subscript>6</subscript></entry>
+ <entry>y<subscript>5</subscript></entry>
+ <entry>y<subscript>4</subscript></entry>
+ <entry>y<subscript>3</subscript></entry>
+ <entry>y<subscript>2</subscript></entry>
+ <entry>y<subscript>1</subscript></entry>
+ <entry>y<subscript>0</subscript></entry>
+ <entry>u<subscript>9</subscript></entry>
+ <entry>u<subscript>8</subscript></entry>
+ <entry>u<subscript>7</subscript></entry>
+ <entry>u<subscript>6</subscript></entry>
+ <entry>u<subscript>5</subscript></entry>
+ <entry>u<subscript>4</subscript></entry>
+ <entry>u<subscript>3</subscript></entry>
+ <entry>u<subscript>2</subscript></entry>
+ <entry>u<subscript>1</subscript></entry>
+ <entry>u<subscript>0</subscript></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+
+ <section>
+ <title>JPEG Compressed Formats</title>
+
+ <para>Those data formats consist of an ordered sequence of 8-bit bytes
+ obtained from JPEG compression process. Additionally to the
+ <constant>_JPEG</constant> postfix the format code is made of
+ the following information.
+ <itemizedlist>
+ <listitem><para>The number of bus samples per entropy encoded byte.</para></listitem>
+ <listitem><para>The bus width.</para></listitem>
+ </itemizedlist>
+ </para>
+
+ <para>For instance, for a JPEG baseline process and an 8-bit bus width
+ the format will be named <constant>V4L2_MBUS_FMT_JPEG_1X8</constant>.
+ </para>
+
+ <para>The following table lists existing JPEG compressed formats.</para>
+
+ <table pgwide="0" frame="none" id="v4l2-mbus-pixelcode-jpeg">
+ <title>JPEG Formats</title>
+ <tgroup cols="3">
+ <colspec colname="id" align="left" />
+ <colspec colname="code" align="left"/>
+ <colspec colname="remarks" align="left"/>
+ <thead>
+ <row>
+ <entry>Identifier</entry>
+ <entry>Code</entry>
+ <entry>Remarks</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row id="V4L2-MBUS-FMT-JPEG-1X8">
+ <entry>V4L2_MBUS_FMT_JPEG_1X8</entry>
+ <entry>0x4001</entry>
+ <entry>Besides of its usage for the parallel bus this format is
+ recommended for transmission of JPEG data over MIPI CSI bus
+ using the User Defined 8-bit Data types.
+ </entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+ </section>
+</section>
diff --git a/Documentation/DocBook/media/v4l/v4l2.xml b/Documentation/DocBook/media/v4l/v4l2.xml
new file mode 100644
index 0000000..2ab365c
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/v4l2.xml
@@ -0,0 +1,557 @@
+ <partinfo>
+ <authorgroup>
+ <author>
+ <firstname>Michael</firstname>
+ <surname>Schimek</surname>
+ <othername role="mi">H</othername>
+ <affiliation>
+ <address>
+ <email>mschimek@gmx.at</email>
+ </address>
+ </affiliation>
+ </author>
+
+ <author>
+ <firstname>Bill</firstname>
+ <surname>Dirks</surname>
+ <!-- Commented until Bill opts in to be spammed.
+ <affiliation>
+ <address>
+ <email>bill@thedirks.org</email>
+ </address>
+ </affiliation> -->
+ <contrib>Original author of the V4L2 API and
+documentation.</contrib>
+ </author>
+
+ <author>
+ <firstname>Hans</firstname>
+ <surname>Verkuil</surname>
+ <contrib>Designed and documented the VIDIOC_LOG_STATUS ioctl,
+the extended control ioctls and major parts of the sliced VBI
+API.</contrib>
+ <affiliation>
+ <address>
+ <email>hverkuil@xs4all.nl</email>
+ </address>
+ </affiliation>
+ </author>
+
+ <author>
+ <firstname>Martin</firstname>
+ <surname>Rubli</surname>
+ <!--
+ <affiliation>
+ <address>
+ <email>martin_rubli@logitech.com</email>
+ </address>
+ </affiliation> -->
+ <contrib>Designed and documented the VIDIOC_ENUM_FRAMESIZES
+and VIDIOC_ENUM_FRAMEINTERVALS ioctls.</contrib>
+ </author>
+
+ <author>
+ <firstname>Andy</firstname>
+ <surname>Walls</surname>
+ <contrib>Documented the fielded V4L2_MPEG_STREAM_VBI_FMT_IVTV
+MPEG stream embedded, sliced VBI data format in this specification.
+</contrib>
+ <affiliation>
+ <address>
+ <email>awalls@md.metrocast.net</email>
+ </address>
+ </affiliation>
+ </author>
+
+ <author>
+ <firstname>Mauro</firstname>
+ <surname>Carvalho Chehab</surname>
+ <contrib>Documented libv4l, designed and added v4l2grab example,
+Remote Controller chapter.</contrib>
+ <affiliation>
+ <address>
+ <email>mchehab@redhat.com</email>
+ </address>
+ </affiliation>
+ </author>
+
+ <author>
+ <firstname>Muralidharan</firstname>
+ <surname>Karicheri</surname>
+ <contrib>Documented the Digital Video timings API.</contrib>
+ <affiliation>
+ <address>
+ <email>m-karicheri2@ti.com</email>
+ </address>
+ </affiliation>
+ </author>
+
+ <author>
+ <firstname>Pawel</firstname>
+ <surname>Osciak</surname>
+ <contrib>Designed and documented the multi-planar API.</contrib>
+ <affiliation>
+ <address>
+ <email>pawel AT osciak.com</email>
+ </address>
+ </affiliation>
+ </author>
+ </authorgroup>
+
+ <copyright>
+ <year>1999</year>
+ <year>2000</year>
+ <year>2001</year>
+ <year>2002</year>
+ <year>2003</year>
+ <year>2004</year>
+ <year>2005</year>
+ <year>2006</year>
+ <year>2007</year>
+ <year>2008</year>
+ <year>2009</year>
+ <year>2010</year>
+ <year>2011</year>
+ <holder>Bill Dirks, Michael H. Schimek, Hans Verkuil, Martin
+Rubli, Andy Walls, Muralidharan Karicheri, Mauro Carvalho Chehab,
+ Pawel Osciak</holder>
+ </copyright>
+ <legalnotice>
+ <para>Except when explicitly stated as GPL, programming examples within
+ this part can be used and distributed without restrictions.</para>
+ </legalnotice>
+ <revhistory>
+ <!-- Put document revisions here, newest first. -->
+ <!-- API revisions (changes and additions of defines, enums,
+structs, ioctls) must be noted in more detail in the history chapter
+(compat.xml), along with the possible impact on existing drivers and
+applications. -->
+
+ <revision>
+ <revnumber>3.2</revnumber>
+ <date>2011-08-26</date>
+ <authorinitials>hv</authorinitials>
+ <revremark>Added V4L2_CTRL_FLAG_VOLATILE.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>3.1</revnumber>
+ <date>2011-06-27</date>
+ <authorinitials>mcc, po, hv</authorinitials>
+ <revremark>Documented that VIDIOC_QUERYCAP now returns a per-subsystem version instead of a per-driver one.
+ Standardize an error code for invalid ioctl.
+ Added V4L2_CTRL_TYPE_BITMASK.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>2.6.39</revnumber>
+ <date>2011-03-01</date>
+ <authorinitials>mcc, po</authorinitials>
+ <revremark>Removed VIDIOC_*_OLD from videodev2.h header and update it to reflect latest changes. Added the <link linkend="planar-apis">multi-planar API</link>.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>2.6.37</revnumber>
+ <date>2010-08-06</date>
+ <authorinitials>hv</authorinitials>
+ <revremark>Removed obsolete vtx (videotext) API.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>2.6.33</revnumber>
+ <date>2009-12-03</date>
+ <authorinitials>mk</authorinitials>
+ <revremark>Added documentation for the Digital Video timings API.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>2.6.32</revnumber>
+ <date>2009-08-31</date>
+ <authorinitials>mcc</authorinitials>
+ <revremark>Now, revisions will match the kernel version where
+the V4L2 API changes will be used by the Linux Kernel.
+Also added Remote Controller chapter.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.29</revnumber>
+ <date>2009-08-26</date>
+ <authorinitials>ev</authorinitials>
+ <revremark>Added documentation for string controls and for FM Transmitter controls.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.28</revnumber>
+ <date>2009-08-26</date>
+ <authorinitials>gl</authorinitials>
+ <revremark>Added V4L2_CID_BAND_STOP_FILTER documentation.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.27</revnumber>
+ <date>2009-08-15</date>
+ <authorinitials>mcc</authorinitials>
+ <revremark>Added libv4l and Remote Controller documentation;
+added v4l2grab and keytable application examples.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.26</revnumber>
+ <date>2009-07-23</date>
+ <authorinitials>hv</authorinitials>
+ <revremark>Finalized the RDS capture API. Added modulator and RDS encoder
+capabilities. Added support for string controls.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.25</revnumber>
+ <date>2009-01-18</date>
+ <authorinitials>hv</authorinitials>
+ <revremark>Added pixel formats VYUY, NV16 and NV61, and changed
+the debug ioctls VIDIOC_DBG_G/S_REGISTER and VIDIOC_DBG_G_CHIP_IDENT.
+Added camera controls V4L2_CID_ZOOM_ABSOLUTE, V4L2_CID_ZOOM_RELATIVE,
+V4L2_CID_ZOOM_CONTINUOUS and V4L2_CID_PRIVACY.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.24</revnumber>
+ <date>2008-03-04</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Added pixel formats Y16 and SBGGR16, new controls
+and a camera controls class. Removed VIDIOC_G/S_MPEGCOMP.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.23</revnumber>
+ <date>2007-08-30</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Fixed a typo in VIDIOC_DBG_G/S_REGISTER.
+Clarified the byte order of packed pixel formats.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.22</revnumber>
+ <date>2007-08-29</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Added the Video Output Overlay interface, new MPEG
+controls, V4L2_FIELD_INTERLACED_TB and V4L2_FIELD_INTERLACED_BT,
+VIDIOC_DBG_G/S_REGISTER, VIDIOC_(TRY_)ENCODER_CMD,
+VIDIOC_G_CHIP_IDENT, VIDIOC_G_ENC_INDEX, new pixel formats.
+Clarifications in the cropping chapter, about RGB pixel formats, the
+mmap(), poll(), select(), read() and write() functions. Typographical
+fixes.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.21</revnumber>
+ <date>2006-12-19</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Fixed a link in the VIDIOC_G_EXT_CTRLS section.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.20</revnumber>
+ <date>2006-11-24</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Clarified the purpose of the audioset field in
+struct v4l2_input and v4l2_output.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.19</revnumber>
+ <date>2006-10-19</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Documented V4L2_PIX_FMT_RGB444.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.18</revnumber>
+ <date>2006-10-18</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Added the description of extended controls by Hans
+Verkuil. Linked V4L2_PIX_FMT_MPEG to V4L2_CID_MPEG_STREAM_TYPE.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.17</revnumber>
+ <date>2006-10-12</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Corrected V4L2_PIX_FMT_HM12 description.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.16</revnumber>
+ <date>2006-10-08</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>VIDIOC_ENUM_FRAMESIZES and
+VIDIOC_ENUM_FRAMEINTERVALS are now part of the API.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.15</revnumber>
+ <date>2006-09-23</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Cleaned up the bibliography, added BT.653 and
+BT.1119. capture.c/start_capturing() for user pointer I/O did not
+initialize the buffer index. Documented the V4L MPEG and MJPEG
+VID_TYPEs and V4L2_PIX_FMT_SBGGR8. Updated the list of reserved pixel
+formats. See the history chapter for API changes.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.14</revnumber>
+ <date>2006-09-14</date>
+ <authorinitials>mr</authorinitials>
+ <revremark>Added VIDIOC_ENUM_FRAMESIZES and
+VIDIOC_ENUM_FRAMEINTERVALS proposal for frame format enumeration of
+digital devices.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.13</revnumber>
+ <date>2006-04-07</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Corrected the description of struct v4l2_window
+clips. New V4L2_STD_ and V4L2_TUNER_MODE_LANG1_LANG2
+defines.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.12</revnumber>
+ <date>2006-02-03</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Corrected the description of struct
+v4l2_captureparm and v4l2_outputparm.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.11</revnumber>
+ <date>2006-01-27</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Improved the description of struct
+v4l2_tuner.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.10</revnumber>
+ <date>2006-01-10</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>VIDIOC_G_INPUT and VIDIOC_S_PARM
+clarifications.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.9</revnumber>
+ <date>2005-11-27</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Improved the 525 line numbering diagram. Hans
+Verkuil and I rewrote the sliced VBI section. He also contributed a
+VIDIOC_LOG_STATUS page. Fixed VIDIOC_S_STD call in the video standard
+selection example. Various updates.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.8</revnumber>
+ <date>2004-10-04</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Somehow a piece of junk slipped into the capture
+example, removed.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.7</revnumber>
+ <date>2004-09-19</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Fixed video standard selection, control
+enumeration, downscaling and aspect example. Added read and user
+pointer i/o to video capture example.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.6</revnumber>
+ <date>2004-08-01</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>v4l2_buffer changes, added video capture example,
+various corrections.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.5</revnumber>
+ <date>2003-11-05</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Pixel format erratum.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.4</revnumber>
+ <date>2003-09-17</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Corrected source and Makefile to generate a PDF.
+SGML fixes. Added latest API changes. Closed gaps in the history
+chapter.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.3</revnumber>
+ <date>2003-02-05</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Another draft, more corrections.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.2</revnumber>
+ <date>2003-01-15</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>Second draft, with corrections pointed out by Gerd
+Knorr.</revremark>
+ </revision>
+
+ <revision>
+ <revnumber>0.1</revnumber>
+ <date>2002-12-01</date>
+ <authorinitials>mhs</authorinitials>
+ <revremark>First draft, based on documentation by Bill Dirks
+and discussions on the V4L mailing list.</revremark>
+ </revision>
+ </revhistory>
+</partinfo>
+
+<title>Video for Linux Two API Specification</title>
+ <subtitle>Revision 3.2</subtitle>
+
+ <chapter id="common">
+ &sub-common;
+ </chapter>
+
+ <chapter id="pixfmt">
+ &sub-pixfmt;
+ </chapter>
+
+ <chapter id="io">
+ &sub-io;
+ </chapter>
+
+ <chapter id="devices">
+ <title>Interfaces</title>
+
+ <section id="capture"> &sub-dev-capture; </section>
+ <section id="overlay"> &sub-dev-overlay; </section>
+ <section id="output"> &sub-dev-output; </section>
+ <section id="osd"> &sub-dev-osd; </section>
+ <section id="codec"> &sub-dev-codec; </section>
+ <section id="effect"> &sub-dev-effect; </section>
+ <section id="raw-vbi"> &sub-dev-raw-vbi; </section>
+ <section id="sliced"> &sub-dev-sliced-vbi; </section>
+ <section id="ttx"> &sub-dev-teletext; </section>
+ <section id="radio"> &sub-dev-radio; </section>
+ <section id="rds"> &sub-dev-rds; </section>
+ <section id="event"> &sub-dev-event; </section>
+ <section id="subdev"> &sub-dev-subdev; </section>
+ </chapter>
+
+ <chapter id="driver">
+ &sub-driver;
+ </chapter>
+
+ <chapter id="libv4l">
+ &sub-libv4l;
+ </chapter>
+
+ <chapter id="compat">
+ &sub-compat;
+ </chapter>
+
+ <appendix id="user-func">
+ <title>Function Reference</title>
+
+ <!-- Keep this alphabetically sorted. -->
+
+ &sub-close;
+ &sub-ioctl;
+ <!-- All ioctls go here. -->
+ &sub-create-bufs;
+ &sub-cropcap;
+ &sub-dbg-g-chip-ident;
+ &sub-dbg-g-register;
+ &sub-dqevent;
+ &sub-encoder-cmd;
+ &sub-enumaudio;
+ &sub-enumaudioout;
+ &sub-enum-dv-presets;
+ &sub-enum-fmt;
+ &sub-enum-framesizes;
+ &sub-enum-frameintervals;
+ &sub-enuminput;
+ &sub-enumoutput;
+ &sub-enumstd;
+ &sub-g-audio;
+ &sub-g-audioout;
+ &sub-g-crop;
+ &sub-g-ctrl;
+ &sub-g-dv-preset;
+ &sub-g-dv-timings;
+ &sub-g-enc-index;
+ &sub-g-ext-ctrls;
+ &sub-g-fbuf;
+ &sub-g-fmt;
+ &sub-g-frequency;
+ &sub-g-input;
+ &sub-g-jpegcomp;
+ &sub-g-modulator;
+ &sub-g-output;
+ &sub-g-parm;
+ &sub-g-priority;
+ &sub-g-sliced-vbi-cap;
+ &sub-g-std;
+ &sub-g-tuner;
+ &sub-log-status;
+ &sub-overlay;
+ &sub-qbuf;
+ &sub-querybuf;
+ &sub-querycap;
+ &sub-queryctrl;
+ &sub-query-dv-preset;
+ &sub-querystd;
+ &sub-prepare-buf;
+ &sub-reqbufs;
+ &sub-s-hw-freq-seek;
+ &sub-streamon;
+ &sub-subdev-enum-frame-interval;
+ &sub-subdev-enum-frame-size;
+ &sub-subdev-enum-mbus-code;
+ &sub-subdev-g-crop;
+ &sub-subdev-g-fmt;
+ &sub-subdev-g-frame-interval;
+ &sub-subscribe-event;
+ <!-- End of ioctls. -->
+ &sub-mmap;
+ &sub-munmap;
+ &sub-open;
+ &sub-poll;
+ &sub-read;
+ &sub-select;
+ &sub-write;
+ </appendix>
+
+ <appendix id="videodev">
+ <title>Video For Linux Two Header File</title>
+ &sub-videodev2-h;
+ </appendix>
+
+ <appendix id="capture-example">
+ <title>Video Capture Example</title>
+ &sub-capture-c;
+ </appendix>
+
+ <appendix id="v4l2grab-example">
+ <title>Video Grabber example using libv4l</title>
+ <para>This program demonstrates how to grab V4L2 images in ppm format by
+using libv4l handlers. The advantage is that this grabber can potentially work
+with any V4L2 driver.</para>
+ &sub-v4l2grab-c;
+ </appendix>
+
+ &sub-media-indices;
+
+ &sub-biblio;
+
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diff --git a/Documentation/DocBook/media/v4l/vidioc-create-bufs.xml b/Documentation/DocBook/media/v4l/vidioc-create-bufs.xml
new file mode 100644
index 0000000..73ae8a6
--- /dev/null
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@@ -0,0 +1,139 @@
+<refentry id="vidioc-create-bufs">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_CREATE_BUFS</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_CREATE_BUFS</refname>
+ <refpurpose>Create buffers for Memory Mapped or User Pointer I/O</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_create_buffers *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_CREATE_BUFS</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>This ioctl is used to create buffers for <link linkend="mmap">memory
+mapped</link> or <link linkend="userp">user pointer</link>
+I/O. It can be used as an alternative or in addition to the
+<constant>VIDIOC_REQBUFS</constant> ioctl, when a tighter control over buffers
+is required. This ioctl can be called multiple times to create buffers of
+different sizes.</para>
+
+ <para>To allocate device buffers applications initialize relevant fields of
+the <structname>v4l2_create_buffers</structname> structure. They set the
+<structfield>type</structfield> field in the
+<structname>v4l2_format</structname> structure, embedded in this
+structure, to the respective stream or buffer type.
+<structfield>count</structfield> must be set to the number of required buffers.
+<structfield>memory</structfield> specifies the required I/O method. The
+<structfield>format</structfield> field shall typically be filled in using
+either the <constant>VIDIOC_TRY_FMT</constant> or
+<constant>VIDIOC_G_FMT</constant> ioctl(). Additionally, applications can adjust
+<structfield>sizeimage</structfield> fields to fit their specific needs. The
+<structfield>reserved</structfield> array must be zeroed.</para>
+
+ <para>When the ioctl is called with a pointer to this structure the driver
+will attempt to allocate up to the requested number of buffers and store the
+actual number allocated and the starting index in the
+<structfield>count</structfield> and the <structfield>index</structfield> fields
+respectively. On return <structfield>count</structfield> can be smaller than
+the number requested. The driver may also increase buffer sizes if required,
+however, it will not update <structfield>sizeimage</structfield> field values.
+The user has to use <constant>VIDIOC_QUERYBUF</constant> to retrieve that
+information.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-create-buffers">
+ <title>struct <structname>v4l2_create_buffers</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>index</structfield></entry>
+ <entry>The starting buffer index, returned by the driver.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>count</structfield></entry>
+ <entry>The number of buffers requested or granted.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-memory;</entry>
+ <entry><structfield>memory</structfield></entry>
+ <entry>Applications set this field to
+<constant>V4L2_MEMORY_MMAP</constant> or
+<constant>V4L2_MEMORY_USERPTR</constant>.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-format;</entry>
+ <entry><structfield>format</structfield></entry>
+ <entry>Filled in by the application, preserved by the driver.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[8]</entry>
+ <entry>A place holder for future extensions.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>ENOMEM</errorcode></term>
+ <listitem>
+ <para>No memory to allocate buffers for <link linkend="mmap">memory
+mapped</link> I/O.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The buffer type (<structfield>type</structfield> field) or the
+requested I/O method (<structfield>memory</structfield>) is not
+supported.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-cropcap.xml b/Documentation/DocBook/media/v4l/vidioc-cropcap.xml
new file mode 100644
index 0000000..b4f2f25
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-cropcap.xml
@@ -0,0 +1,165 @@
+<refentry id="vidioc-cropcap">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_CROPCAP</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_CROPCAP</refname>
+ <refpurpose>Information about the video cropping and scaling abilities</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_cropcap
+*<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_CROPCAP</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>Applications use this function to query the cropping
+limits, the pixel aspect of images and to calculate scale factors.
+They set the <structfield>type</structfield> field of a v4l2_cropcap
+structure to the respective buffer (stream) type and call the
+<constant>VIDIOC_CROPCAP</constant> ioctl with a pointer to this
+structure. Drivers fill the rest of the structure. The results are
+constant except when switching the video standard. Remember this
+switch can occur implicit when switching the video input or
+output.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-cropcap">
+ <title>struct <structname>v4l2_cropcap</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>&v4l2-buf-type;</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry>Type of the data stream, set by the application.
+Only these types are valid here:
+<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>,
+<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>,
+<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>, and custom (driver
+defined) types with code <constant>V4L2_BUF_TYPE_PRIVATE</constant>
+and higher.</entry>
+ </row>
+ <row>
+ <entry>struct <link linkend="v4l2-rect-crop">v4l2_rect</link></entry>
+ <entry><structfield>bounds</structfield></entry>
+ <entry>Defines the window within capturing or output is
+possible, this may exclude for example the horizontal and vertical
+blanking areas. The cropping rectangle cannot exceed these limits.
+Width and height are defined in pixels, the driver writer is free to
+choose origin and units of the coordinate system in the analog
+domain.</entry>
+ </row>
+ <row>
+ <entry>struct <link linkend="v4l2-rect-crop">v4l2_rect</link></entry>
+ <entry><structfield>defrect</structfield></entry>
+ <entry>Default cropping rectangle, it shall cover the
+"whole picture". Assuming pixel aspect 1/1 this could be for example a
+640 × 480 rectangle for NTSC, a
+768 × 576 rectangle for PAL and SECAM centered over
+the active picture area. The same co-ordinate system as for
+ <structfield>bounds</structfield> is used.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-fract;</entry>
+ <entry><structfield>pixelaspect</structfield></entry>
+ <entry><para>This is the pixel aspect (y / x) when no
+scaling is applied, the ratio of the actual sampling
+frequency and the frequency required to get square
+pixels.</para><para>When cropping coordinates refer to square pixels,
+the driver sets <structfield>pixelaspect</structfield> to 1/1. Other
+common values are 54/59 for PAL and SECAM, 11/10 for NTSC sampled
+according to [<xref linkend="itu601" />].</para></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <!-- NB this table is duplicated in the overlay chapter. -->
+
+ <table pgwide="1" frame="none" id="v4l2-rect-crop">
+ <title>struct <structname>v4l2_rect</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>left</structfield></entry>
+ <entry>Horizontal offset of the top, left corner of the
+rectangle, in pixels.</entry>
+ </row>
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>top</structfield></entry>
+ <entry>Vertical offset of the top, left corner of the
+rectangle, in pixels.</entry>
+ </row>
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>width</structfield></entry>
+ <entry>Width of the rectangle, in pixels.</entry>
+ </row>
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>height</structfield></entry>
+ <entry>Height of the rectangle, in pixels. Width
+and height cannot be negative, the fields are signed for
+hysterical reasons. <!-- video4linux-list@redhat.com
+on 22 Oct 2002 subject "Re:[V4L][patches!] Re:v4l2/kernel-2.5" -->
+</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The &v4l2-cropcap; <structfield>type</structfield> is
+invalid. This is not permitted for video capture, output and overlay devices,
+which must support <constant>VIDIOC_CROPCAP</constant>.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-dbg-g-chip-ident.xml b/Documentation/DocBook/media/v4l/vidioc-dbg-g-chip-ident.xml
new file mode 100644
index 0000000..4ecd966
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-dbg-g-chip-ident.xml
@@ -0,0 +1,266 @@
+<refentry id="vidioc-dbg-g-chip-ident">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_DBG_G_CHIP_IDENT</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_DBG_G_CHIP_IDENT</refname>
+ <refpurpose>Identify the chips on a TV card</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_dbg_chip_ident
+*<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_DBG_G_CHIP_IDENT</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <note>
+ <title>Experimental</title>
+
+ <para>This is an <link
+linkend="experimental">experimental</link> interface and may change in
+the future.</para>
+ </note>
+
+ <para>For driver debugging purposes this ioctl allows test
+applications to query the driver about the chips present on the TV
+card. Regular applications must not use it. When you found a chip
+specific bug, please contact the linux-media mailing list (&v4l-ml;)
+so it can be fixed.</para>
+
+ <para>To query the driver applications must initialize the
+<structfield>match.type</structfield> and
+<structfield>match.addr</structfield> or <structfield>match.name</structfield>
+fields of a &v4l2-dbg-chip-ident;
+and call <constant>VIDIOC_DBG_G_CHIP_IDENT</constant> with a pointer to
+this structure. On success the driver stores information about the
+selected chip in the <structfield>ident</structfield> and
+<structfield>revision</structfield> fields. On failure the structure
+remains unchanged.</para>
+
+ <para>When <structfield>match.type</structfield> is
+<constant>V4L2_CHIP_MATCH_HOST</constant>,
+<structfield>match.addr</structfield> selects the nth non-&i2c; chip
+on the TV card. You can enumerate all chips by starting at zero and
+incrementing <structfield>match.addr</structfield> by one until
+<constant>VIDIOC_DBG_G_CHIP_IDENT</constant> fails with an &EINVAL;.
+The number zero always selects the host chip, ⪚ the chip connected
+to the PCI or USB bus.</para>
+
+ <para>When <structfield>match.type</structfield> is
+<constant>V4L2_CHIP_MATCH_I2C_DRIVER</constant>,
+<structfield>match.name</structfield> contains the I2C driver name.
+For instance
+<constant>"saa7127"</constant> will match any chip
+supported by the saa7127 driver, regardless of its &i2c; bus address.
+When multiple chips supported by the same driver are present, the
+ioctl will return <constant>V4L2_IDENT_AMBIGUOUS</constant> in the
+<structfield>ident</structfield> field.</para>
+
+ <para>When <structfield>match.type</structfield> is
+<constant>V4L2_CHIP_MATCH_I2C_ADDR</constant>,
+<structfield>match.addr</structfield> selects a chip by its 7 bit
+&i2c; bus address.</para>
+
+ <para>When <structfield>match.type</structfield> is
+<constant>V4L2_CHIP_MATCH_AC97</constant>,
+<structfield>match.addr</structfield> selects the nth AC97 chip
+on the TV card. You can enumerate all chips by starting at zero and
+incrementing <structfield>match.addr</structfield> by one until
+<constant>VIDIOC_DBG_G_CHIP_IDENT</constant> fails with an &EINVAL;.</para>
+
+ <para>On success, the <structfield>ident</structfield> field will
+contain a chip ID from the Linux
+<filename>media/v4l2-chip-ident.h</filename> header file, and the
+<structfield>revision</structfield> field will contain a driver
+specific value, or zero if no particular revision is associated with
+this chip.</para>
+
+ <para>When the driver could not identify the selected chip,
+<structfield>ident</structfield> will contain
+<constant>V4L2_IDENT_UNKNOWN</constant>. When no chip matched
+the ioctl will succeed but the
+<structfield>ident</structfield> field will contain
+<constant>V4L2_IDENT_NONE</constant>. If multiple chips matched,
+<structfield>ident</structfield> will contain
+<constant>V4L2_IDENT_AMBIGUOUS</constant>. In all these cases the
+<structfield>revision</structfield> field remains unchanged.</para>
+
+ <para>This ioctl is optional, not all drivers may support it. It
+was introduced in Linux 2.6.21, but the API was changed to the
+one described here in 2.6.29.</para>
+
+ <para>We recommended the <application>v4l2-dbg</application>
+utility over calling this ioctl directly. It is available from the
+LinuxTV v4l-dvb repository; see <ulink
+url="http://linuxtv.org/repo/">http://linuxtv.org/repo/</ulink> for
+access instructions.</para>
+
+ <!-- Note for convenience vidioc-dbg-g-register.sgml
+ contains a duplicate of this table. -->
+ <table pgwide="1" frame="none" id="ident-v4l2-dbg-match">
+ <title>struct <structname>v4l2_dbg_match</structname></title>
+ <tgroup cols="4">
+ &cs-ustr;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry>See <xref linkend="ident-chip-match-types" /> for a list of
+possible types.</entry>
+ </row>
+ <row>
+ <entry>union</entry>
+ <entry>(anonymous)</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u32</entry>
+ <entry><structfield>addr</structfield></entry>
+ <entry>Match a chip by this number, interpreted according
+to the <structfield>type</structfield> field.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>char</entry>
+ <entry><structfield>name[32]</structfield></entry>
+ <entry>Match a chip by this name, interpreted according
+to the <structfield>type</structfield> field.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-dbg-chip-ident">
+ <title>struct <structname>v4l2_dbg_chip_ident</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>struct v4l2_dbg_match</entry>
+ <entry><structfield>match</structfield></entry>
+ <entry>How to match the chip, see <xref linkend="ident-v4l2-dbg-match" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>ident</structfield></entry>
+ <entry>A chip identifier as defined in the Linux
+<filename>media/v4l2-chip-ident.h</filename> header file, or one of
+the values from <xref linkend="chip-ids" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>revision</structfield></entry>
+ <entry>A chip revision, chip and driver specific.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <!-- Note for convenience vidioc-dbg-g-register.sgml
+ contains a duplicate of this table. -->
+ <table pgwide="1" frame="none" id="ident-chip-match-types">
+ <title>Chip Match Types</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_CHIP_MATCH_HOST</constant></entry>
+ <entry>0</entry>
+ <entry>Match the nth chip on the card, zero for the
+ host chip. Does not match &i2c; chips.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CHIP_MATCH_I2C_DRIVER</constant></entry>
+ <entry>1</entry>
+ <entry>Match an &i2c; chip by its driver name.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CHIP_MATCH_I2C_ADDR</constant></entry>
+ <entry>2</entry>
+ <entry>Match a chip by its 7 bit &i2c; bus address.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CHIP_MATCH_AC97</constant></entry>
+ <entry>3</entry>
+ <entry>Match the nth anciliary AC97 chip.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <!-- This is an anonymous enum in media/v4l2-chip-ident.h. -->
+ <table pgwide="1" frame="none" id="chip-ids">
+ <title>Chip Identifiers</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_IDENT_NONE</constant></entry>
+ <entry>0</entry>
+ <entry>No chip matched.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_IDENT_AMBIGUOUS</constant></entry>
+ <entry>1</entry>
+ <entry>Multiple chips matched.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_IDENT_UNKNOWN</constant></entry>
+ <entry>2</entry>
+ <entry>A chip is present at this address, but the driver
+could not identify it.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The <structfield>match_type</structfield> is invalid.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-dbg-g-register.xml b/Documentation/DocBook/media/v4l/vidioc-dbg-g-register.xml
new file mode 100644
index 0000000..a44aebc
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-dbg-g-register.xml
@@ -0,0 +1,258 @@
+<refentry id="vidioc-dbg-g-register">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_DBG_G_REGISTER, VIDIOC_DBG_S_REGISTER</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_DBG_G_REGISTER</refname>
+ <refname>VIDIOC_DBG_S_REGISTER</refname>
+ <refpurpose>Read or write hardware registers</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_dbg_register *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>const struct v4l2_dbg_register
+*<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_DBG_G_REGISTER, VIDIOC_DBG_S_REGISTER</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <note>
+ <title>Experimental</title>
+
+ <para>This is an <link linkend="experimental">experimental</link>
+interface and may change in the future.</para>
+ </note>
+
+ <para>For driver debugging purposes these ioctls allow test
+applications to access hardware registers directly. Regular
+applications must not use them.</para>
+
+ <para>Since writing or even reading registers can jeopardize the
+system security, its stability and damage the hardware, both ioctls
+require superuser privileges. Additionally the Linux kernel must be
+compiled with the <constant>CONFIG_VIDEO_ADV_DEBUG</constant> option
+to enable these ioctls.</para>
+
+ <para>To write a register applications must initialize all fields
+of a &v4l2-dbg-register; and call
+<constant>VIDIOC_DBG_S_REGISTER</constant> with a pointer to this
+structure. The <structfield>match.type</structfield> and
+<structfield>match.addr</structfield> or <structfield>match.name</structfield>
+fields select a chip on the TV
+card, the <structfield>reg</structfield> field specifies a register
+number and the <structfield>val</structfield> field the value to be
+written into the register.</para>
+
+ <para>To read a register applications must initialize the
+<structfield>match.type</structfield>,
+<structfield>match.chip</structfield> or <structfield>match.name</structfield> and
+<structfield>reg</structfield> fields, and call
+<constant>VIDIOC_DBG_G_REGISTER</constant> with a pointer to this
+structure. On success the driver stores the register value in the
+<structfield>val</structfield> field. On failure the structure remains
+unchanged.</para>
+
+ <para>When <structfield>match.type</structfield> is
+<constant>V4L2_CHIP_MATCH_HOST</constant>,
+<structfield>match.addr</structfield> selects the nth non-&i2c; chip
+on the TV card. The number zero always selects the host chip, ⪚ the
+chip connected to the PCI or USB bus. You can find out which chips are
+present with the &VIDIOC-DBG-G-CHIP-IDENT; ioctl.</para>
+
+ <para>When <structfield>match.type</structfield> is
+<constant>V4L2_CHIP_MATCH_I2C_DRIVER</constant>,
+<structfield>match.name</structfield> contains the I2C driver name.
+For instance
+<constant>"saa7127"</constant> will match any chip
+supported by the saa7127 driver, regardless of its &i2c; bus address.
+When multiple chips supported by the same driver are present, the
+effect of these ioctls is undefined. Again with the
+&VIDIOC-DBG-G-CHIP-IDENT; ioctl you can find out which &i2c; chips are
+present.</para>
+
+ <para>When <structfield>match.type</structfield> is
+<constant>V4L2_CHIP_MATCH_I2C_ADDR</constant>,
+<structfield>match.addr</structfield> selects a chip by its 7 bit &i2c;
+bus address.</para>
+
+ <para>When <structfield>match.type</structfield> is
+<constant>V4L2_CHIP_MATCH_AC97</constant>,
+<structfield>match.addr</structfield> selects the nth AC97 chip
+on the TV card.</para>
+
+ <note>
+ <title>Success not guaranteed</title>
+
+ <para>Due to a flaw in the Linux &i2c; bus driver these ioctls may
+return successfully without actually reading or writing a register. To
+catch the most likely failure we recommend a &VIDIOC-DBG-G-CHIP-IDENT;
+call confirming the presence of the selected &i2c; chip.</para>
+ </note>
+
+ <para>These ioctls are optional, not all drivers may support them.
+However when a driver supports these ioctls it must also support
+&VIDIOC-DBG-G-CHIP-IDENT;. Conversely it may support
+<constant>VIDIOC_DBG_G_CHIP_IDENT</constant> but not these ioctls.</para>
+
+ <para><constant>VIDIOC_DBG_G_REGISTER</constant> and
+<constant>VIDIOC_DBG_S_REGISTER</constant> were introduced in Linux
+2.6.21, but their API was changed to the one described here in kernel 2.6.29.</para>
+
+ <para>We recommended the <application>v4l2-dbg</application>
+utility over calling these ioctls directly. It is available from the
+LinuxTV v4l-dvb repository; see <ulink
+url="http://linuxtv.org/repo/">http://linuxtv.org/repo/</ulink> for
+access instructions.</para>
+
+ <!-- Note for convenience vidioc-dbg-g-chip-ident.sgml
+ contains a duplicate of this table. -->
+ <table pgwide="1" frame="none" id="v4l2-dbg-match">
+ <title>struct <structname>v4l2_dbg_match</structname></title>
+ <tgroup cols="4">
+ &cs-ustr;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry>See <xref linkend="ident-chip-match-types" /> for a list of
+possible types.</entry>
+ </row>
+ <row>
+ <entry>union</entry>
+ <entry>(anonymous)</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u32</entry>
+ <entry><structfield>addr</structfield></entry>
+ <entry>Match a chip by this number, interpreted according
+to the <structfield>type</structfield> field.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>char</entry>
+ <entry><structfield>name[32]</structfield></entry>
+ <entry>Match a chip by this name, interpreted according
+to the <structfield>type</structfield> field.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+
+ <table pgwide="1" frame="none" id="v4l2-dbg-register">
+ <title>struct <structname>v4l2_dbg_register</structname></title>
+ <tgroup cols="4">
+ <colspec colname="c1" />
+ <colspec colname="c2" />
+ <colspec colname="c4" />
+ <tbody valign="top">
+ <row>
+ <entry>struct v4l2_dbg_match</entry>
+ <entry><structfield>match</structfield></entry>
+ <entry>How to match the chip, see <xref linkend="v4l2-dbg-match" />.</entry>
+ </row>
+ <row>
+ <entry>__u64</entry>
+ <entry><structfield>reg</structfield></entry>
+ <entry>A register number.</entry>
+ </row>
+ <row>
+ <entry>__u64</entry>
+ <entry><structfield>val</structfield></entry>
+ <entry>The value read from, or to be written into the
+register.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <!-- Note for convenience vidioc-dbg-g-chip-ident.sgml
+ contains a duplicate of this table. -->
+ <table pgwide="1" frame="none" id="chip-match-types">
+ <title>Chip Match Types</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_CHIP_MATCH_HOST</constant></entry>
+ <entry>0</entry>
+ <entry>Match the nth chip on the card, zero for the
+ host chip. Does not match &i2c; chips.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CHIP_MATCH_I2C_DRIVER</constant></entry>
+ <entry>1</entry>
+ <entry>Match an &i2c; chip by its driver name.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CHIP_MATCH_I2C_ADDR</constant></entry>
+ <entry>2</entry>
+ <entry>Match a chip by its 7 bit &i2c; bus address.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CHIP_MATCH_AC97</constant></entry>
+ <entry>3</entry>
+ <entry>Match the nth anciliary AC97 chip.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EPERM</errorcode></term>
+ <listitem>
+ <para>Insufficient permissions. Root privileges are required
+to execute these ioctls.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-dqevent.xml b/Documentation/DocBook/media/v4l/vidioc-dqevent.xml
new file mode 100644
index 0000000..e8714aa
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-dqevent.xml
@@ -0,0 +1,271 @@
+<refentry id="vidioc-dqevent">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_DQEVENT</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_DQEVENT</refname>
+ <refpurpose>Dequeue event</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_event
+*<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_DQEVENT</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>Dequeue an event from a video device. No input is required
+ for this ioctl. All the fields of the &v4l2-event; structure are
+ filled by the driver. The file handle will also receive exceptions
+ which the application may get by e.g. using the select system
+ call.</para>
+
+ <table frame="none" pgwide="1" id="v4l2-event">
+ <title>struct <structname>v4l2_event</structname></title>
+ <tgroup cols="4">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry></entry>
+ <entry>Type of the event.</entry>
+ </row>
+ <row>
+ <entry>union</entry>
+ <entry><structfield>u</structfield></entry>
+ <entry></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-event-vsync;</entry>
+ <entry><structfield>vsync</structfield></entry>
+ <entry>Event data for event V4L2_EVENT_VSYNC.
+ </entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-event-ctrl;</entry>
+ <entry><structfield>ctrl</structfield></entry>
+ <entry>Event data for event V4L2_EVENT_CTRL.
+ </entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-event-frame-sync;</entry>
+ <entry><structfield>frame</structfield></entry>
+ <entry>Event data for event V4L2_EVENT_FRAME_SYNC.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u8</entry>
+ <entry><structfield>data</structfield>[64]</entry>
+ <entry>Event data. Defined by the event type. The union
+ should be used to define easily accessible type for
+ events.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>pending</structfield></entry>
+ <entry></entry>
+ <entry>Number of pending events excluding this one.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>sequence</structfield></entry>
+ <entry></entry>
+ <entry>Event sequence number. The sequence number is
+ incremented for every subscribed event that takes place.
+ If sequence numbers are not contiguous it means that
+ events have been lost.
+ </entry>
+ </row>
+ <row>
+ <entry>struct timespec</entry>
+ <entry><structfield>timestamp</structfield></entry>
+ <entry></entry>
+ <entry>Event timestamp.</entry>
+ </row>
+ <row>
+ <entry>u32</entry>
+ <entry><structfield>id</structfield></entry>
+ <entry></entry>
+ <entry>The ID associated with the event source. If the event does not
+ have an associated ID (this depends on the event type), then this
+ is 0.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[8]</entry>
+ <entry></entry>
+ <entry>Reserved for future extensions. Drivers must set
+ the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table frame="none" pgwide="1" id="v4l2-event-vsync">
+ <title>struct <structname>v4l2_event_vsync</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>field</structfield></entry>
+ <entry>The upcoming field. See &v4l2-field;.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table frame="none" pgwide="1" id="v4l2-event-ctrl">
+ <title>struct <structname>v4l2_event_ctrl</structname></title>
+ <tgroup cols="4">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>changes</structfield></entry>
+ <entry></entry>
+ <entry>A bitmask that tells what has changed. See <xref linkend="changes-flags" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry></entry>
+ <entry>The type of the control. See &v4l2-ctrl-type;.</entry>
+ </row>
+ <row>
+ <entry>union (anonymous)</entry>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__s32</entry>
+ <entry><structfield>value</structfield></entry>
+ <entry>The 32-bit value of the control for 32-bit control types.
+ This is 0 for string controls since the value of a string
+ cannot be passed using &VIDIOC-DQEVENT;.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__s64</entry>
+ <entry><structfield>value64</structfield></entry>
+ <entry>The 64-bit value of the control for 64-bit control types.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>flags</structfield></entry>
+ <entry></entry>
+ <entry>The control flags. See <xref linkend="control-flags" />.</entry>
+ </row>
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>minimum</structfield></entry>
+ <entry></entry>
+ <entry>The minimum value of the control. See &v4l2-queryctrl;.</entry>
+ </row>
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>maximum</structfield></entry>
+ <entry></entry>
+ <entry>The maximum value of the control. See &v4l2-queryctrl;.</entry>
+ </row>
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>step</structfield></entry>
+ <entry></entry>
+ <entry>The step value of the control. See &v4l2-queryctrl;.</entry>
+ </row>
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>default_value</structfield></entry>
+ <entry></entry>
+ <entry>The default value value of the control. See &v4l2-queryctrl;.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table frame="none" pgwide="1" id="v4l2-event-frame-sync">
+ <title>struct <structname>v4l2_event_frame_sync</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>frame_sequence</structfield></entry>
+ <entry>
+ The sequence number of the frame being received.
+ </entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="changes-flags">
+ <title>Changes</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_EVENT_CTRL_CH_VALUE</constant></entry>
+ <entry>0x0001</entry>
+ <entry>This control event was triggered because the value of the control
+ changed. Special case: if a button control is pressed, then this
+ event is sent as well, even though there is not explicit value
+ associated with a button control.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_EVENT_CTRL_CH_FLAGS</constant></entry>
+ <entry>0x0002</entry>
+ <entry>This control event was triggered because the control flags
+ changed.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml b/Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml
new file mode 100644
index 0000000..af7f3f2
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml
@@ -0,0 +1,195 @@
+<refentry id="vidioc-encoder-cmd">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_ENCODER_CMD, VIDIOC_TRY_ENCODER_CMD</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_ENCODER_CMD</refname>
+ <refname>VIDIOC_TRY_ENCODER_CMD</refname>
+ <refpurpose>Execute an encoder command</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_encoder_cmd *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_ENCODER_CMD, VIDIOC_TRY_ENCODER_CMD</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <note>
+ <title>Experimental</title>
+
+ <para>This is an <link linkend="experimental">experimental</link>
+interface and may change in the future.</para>
+ </note>
+
+ <para>These ioctls control an audio/video (usually MPEG-) encoder.
+<constant>VIDIOC_ENCODER_CMD</constant> sends a command to the
+encoder, <constant>VIDIOC_TRY_ENCODER_CMD</constant> can be used to
+try a command without actually executing it.</para>
+
+ <para>To send a command applications must initialize all fields of a
+ &v4l2-encoder-cmd; and call
+ <constant>VIDIOC_ENCODER_CMD</constant> or
+ <constant>VIDIOC_TRY_ENCODER_CMD</constant> with a pointer to this
+ structure.</para>
+
+ <para>The <structfield>cmd</structfield> field must contain the
+command code. The <structfield>flags</structfield> field is currently
+only used by the STOP command and contains one bit: If the
+<constant>V4L2_ENC_CMD_STOP_AT_GOP_END</constant> flag is set,
+encoding will continue until the end of the current <wordasword>Group
+Of Pictures</wordasword>, otherwise it will stop immediately.</para>
+
+ <para>A <function>read</function>() call sends a START command to
+the encoder if it has not been started yet. After a STOP command,
+<function>read</function>() calls will read the remaining data
+buffered by the driver. When the buffer is empty,
+<function>read</function>() will return zero and the next
+<function>read</function>() call will restart the encoder.</para>
+
+ <para>A <function>close</function>() call sends an immediate STOP
+to the encoder, and all buffered data is discarded.</para>
+
+ <para>These ioctls are optional, not all drivers may support
+them. They were introduced in Linux 2.6.21.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-encoder-cmd">
+ <title>struct <structname>v4l2_encoder_cmd</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>cmd</structfield></entry>
+ <entry>The encoder command, see <xref linkend="encoder-cmds" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>flags</structfield></entry>
+ <entry>Flags to go with the command, see <xref
+ linkend="encoder-flags" />. If no flags are defined for
+this command, drivers and applications must set this field to
+zero.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>data</structfield>[8]</entry>
+ <entry>Reserved for future extensions. Drivers and
+applications must set the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="encoder-cmds">
+ <title>Encoder Commands</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_ENC_CMD_START</constant></entry>
+ <entry>0</entry>
+ <entry>Start the encoder. When the encoder is already
+running or paused, this command does nothing. No flags are defined for
+this command.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_ENC_CMD_STOP</constant></entry>
+ <entry>1</entry>
+ <entry>Stop the encoder. When the
+<constant>V4L2_ENC_CMD_STOP_AT_GOP_END</constant> flag is set,
+encoding will continue until the end of the current <wordasword>Group
+Of Pictures</wordasword>, otherwise encoding will stop immediately.
+When the encoder is already stopped, this command does
+nothing.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_ENC_CMD_PAUSE</constant></entry>
+ <entry>2</entry>
+ <entry>Pause the encoder. When the encoder has not been
+started yet, the driver will return an &EPERM;. When the encoder is
+already paused, this command does nothing. No flags are defined for
+this command.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_ENC_CMD_RESUME</constant></entry>
+ <entry>3</entry>
+ <entry>Resume encoding after a PAUSE command. When the
+encoder has not been started yet, the driver will return an &EPERM;.
+When the encoder is already running, this command does nothing. No
+flags are defined for this command.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="encoder-flags">
+ <title>Encoder Command Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_ENC_CMD_STOP_AT_GOP_END</constant></entry>
+ <entry>0x0001</entry>
+ <entry>Stop encoding at the end of the current <wordasword>Group Of
+Pictures</wordasword>, rather than immediately.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The <structfield>cmd</structfield> field is invalid.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EPERM</errorcode></term>
+ <listitem>
+ <para>The application sent a PAUSE or RESUME command when
+the encoder was not running.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/v4l/vidioc-enum-dv-presets.xml b/Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-enum-dv-presets.xml
rename to Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml
diff --git a/Documentation/DocBook/v4l/vidioc-enum-fmt.xml b/Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-enum-fmt.xml
rename to Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml
diff --git a/Documentation/DocBook/media/v4l/vidioc-enum-frameintervals.xml b/Documentation/DocBook/media/v4l/vidioc-enum-frameintervals.xml
new file mode 100644
index 0000000..5fd72c4
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-enum-frameintervals.xml
@@ -0,0 +1,259 @@
+<refentry id="vidioc-enum-frameintervals">
+
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_ENUM_FRAMEINTERVALS</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_ENUM_FRAMEINTERVALS</refname>
+ <refpurpose>Enumerate frame intervals</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_frmivalenum *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_ENUM_FRAMEINTERVALS</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para>Pointer to a &v4l2-frmivalenum; structure that
+contains a pixel format and size and receives a frame interval.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>This ioctl allows applications to enumerate all frame
+intervals that the device supports for the given pixel format and
+frame size.</para>
+ <para>The supported pixel formats and frame sizes can be obtained
+by using the &VIDIOC-ENUM-FMT; and &VIDIOC-ENUM-FRAMESIZES;
+functions.</para>
+ <para>The return value and the content of the
+<structfield>v4l2_frmivalenum.type</structfield> field depend on the
+type of frame intervals the device supports. Here are the semantics of
+the function for the different cases:</para>
+ <itemizedlist>
+ <listitem>
+ <para><emphasis role="bold">Discrete:</emphasis> The function
+returns success if the given index value (zero-based) is valid. The
+application should increase the index by one for each call until
+<constant>EINVAL</constant> is returned. The `v4l2_frmivalenum.type`
+field is set to `V4L2_FRMIVAL_TYPE_DISCRETE` by the driver. Of the
+union only the `discrete` member is valid.</para>
+ </listitem>
+ <listitem>
+ <para><emphasis role="bold">Step-wise:</emphasis> The function
+returns success if the given index value is zero and
+<constant>EINVAL</constant> for any other index value. The
+<structfield>v4l2_frmivalenum.type</structfield> field is set to
+<constant>V4L2_FRMIVAL_TYPE_STEPWISE</constant> by the driver. Of the
+union only the <structfield>stepwise</structfield> member is
+valid.</para>
+ </listitem>
+ <listitem>
+ <para><emphasis role="bold">Continuous:</emphasis> This is a
+special case of the step-wise type above. The function returns success
+if the given index value is zero and <constant>EINVAL</constant> for
+any other index value. The
+<structfield>v4l2_frmivalenum.type</structfield> field is set to
+<constant>V4L2_FRMIVAL_TYPE_CONTINUOUS</constant> by the driver. Of
+the union only the <structfield>stepwise</structfield> member is valid
+and the <structfield>step</structfield> value is set to 1.</para>
+ </listitem>
+ </itemizedlist>
+
+ <para>When the application calls the function with index zero, it
+must check the <structfield>type</structfield> field to determine the
+type of frame interval enumeration the device supports. Only for the
+<constant>V4L2_FRMIVAL_TYPE_DISCRETE</constant> type does it make
+sense to increase the index value to receive more frame
+intervals.</para>
+ <para>Note that the order in which the frame intervals are
+returned has no special meaning. In particular does it not say
+anything about potential default frame intervals.</para>
+ <para>Applications can assume that the enumeration data does not
+change without any interaction from the application itself. This means
+that the enumeration data is consistent if the application does not
+perform any other ioctl calls while it runs the frame interval
+enumeration.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>Notes</title>
+
+ <itemizedlist>
+ <listitem>
+ <para><emphasis role="bold">Frame intervals and frame
+rates:</emphasis> The V4L2 API uses frame intervals instead of frame
+rates. Given the frame interval the frame rate can be computed as
+follows:<screen>frame_rate = 1 / frame_interval</screen></para>
+ </listitem>
+ </itemizedlist>
+
+ </refsect1>
+
+ <refsect1>
+ <title>Structs</title>
+
+ <para>In the structs below, <emphasis>IN</emphasis> denotes a
+value that has to be filled in by the application,
+<emphasis>OUT</emphasis> denotes values that the driver fills in. The
+application should zero out all members except for the
+<emphasis>IN</emphasis> fields.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-frmival-stepwise">
+ <title>struct <structname>v4l2_frmival_stepwise</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>&v4l2-fract;</entry>
+ <entry><structfield>min</structfield></entry>
+ <entry>Minimum frame interval [s].</entry>
+ </row>
+ <row>
+ <entry>&v4l2-fract;</entry>
+ <entry><structfield>max</structfield></entry>
+ <entry>Maximum frame interval [s].</entry>
+ </row>
+ <row>
+ <entry>&v4l2-fract;</entry>
+ <entry><structfield>step</structfield></entry>
+ <entry>Frame interval step size [s].</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-frmivalenum">
+ <title>struct <structname>v4l2_frmivalenum</structname></title>
+ <tgroup cols="4">
+ <colspec colname="c1" />
+ <colspec colname="c2" />
+ <colspec colname="c3" />
+ <colspec colname="c4" />
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>index</structfield></entry>
+ <entry></entry>
+ <entry>IN: Index of the given frame interval in the
+enumeration.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>pixel_format</structfield></entry>
+ <entry></entry>
+ <entry>IN: Pixel format for which the frame intervals are
+enumerated.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>width</structfield></entry>
+ <entry></entry>
+ <entry>IN: Frame width for which the frame intervals are
+enumerated.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>height</structfield></entry>
+ <entry></entry>
+ <entry>IN: Frame height for which the frame intervals are
+enumerated.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry></entry>
+ <entry>OUT: Frame interval type the device supports.</entry>
+ </row>
+ <row>
+ <entry>union</entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>OUT: Frame interval with the given index.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-fract;</entry>
+ <entry><structfield>discrete</structfield></entry>
+ <entry>Frame interval [s].</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-frmival-stepwise;</entry>
+ <entry><structfield>stepwise</structfield></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved[2]</structfield></entry>
+ <entry></entry>
+ <entry>Reserved space for future use.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ <title>Enums</title>
+
+ <table pgwide="1" frame="none" id="v4l2-frmivaltypes">
+ <title>enum <structname>v4l2_frmivaltypes</structname></title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_FRMIVAL_TYPE_DISCRETE</constant></entry>
+ <entry>1</entry>
+ <entry>Discrete frame interval.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FRMIVAL_TYPE_CONTINUOUS</constant></entry>
+ <entry>2</entry>
+ <entry>Continuous frame interval.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FRMIVAL_TYPE_STEPWISE</constant></entry>
+ <entry>3</entry>
+ <entry>Step-wise defined frame interval.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml b/Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml
new file mode 100644
index 0000000..f77a13f
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml
@@ -0,0 +1,271 @@
+<refentry id="vidioc-enum-framesizes">
+
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_ENUM_FRAMESIZES</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_ENUM_FRAMESIZES</refname>
+ <refpurpose>Enumerate frame sizes</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_frmsizeenum *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_ENUM_FRAMESIZES</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para>Pointer to a &v4l2-frmsizeenum; that contains an index
+and pixel format and receives a frame width and height.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <note>
+ <title>Experimental</title>
+
+ <para>This is an <link linkend="experimental">experimental</link>
+interface and may change in the future.</para>
+ </note>
+
+ <para>This ioctl allows applications to enumerate all frame sizes
+(&ie; width and height in pixels) that the device supports for the
+given pixel format.</para>
+ <para>The supported pixel formats can be obtained by using the
+&VIDIOC-ENUM-FMT; function.</para>
+ <para>The return value and the content of the
+<structfield>v4l2_frmsizeenum.type</structfield> field depend on the
+type of frame sizes the device supports. Here are the semantics of the
+function for the different cases:</para>
+
+ <itemizedlist>
+ <listitem>
+ <para><emphasis role="bold">Discrete:</emphasis> The function
+returns success if the given index value (zero-based) is valid. The
+application should increase the index by one for each call until
+<constant>EINVAL</constant> is returned. The
+<structfield>v4l2_frmsizeenum.type</structfield> field is set to
+<constant>V4L2_FRMSIZE_TYPE_DISCRETE</constant> by the driver. Of the
+union only the <structfield>discrete</structfield> member is
+valid.</para>
+ </listitem>
+ <listitem>
+ <para><emphasis role="bold">Step-wise:</emphasis> The function
+returns success if the given index value is zero and
+<constant>EINVAL</constant> for any other index value. The
+<structfield>v4l2_frmsizeenum.type</structfield> field is set to
+<constant>V4L2_FRMSIZE_TYPE_STEPWISE</constant> by the driver. Of the
+union only the <structfield>stepwise</structfield> member is
+valid.</para>
+ </listitem>
+ <listitem>
+ <para><emphasis role="bold">Continuous:</emphasis> This is a
+special case of the step-wise type above. The function returns success
+if the given index value is zero and <constant>EINVAL</constant> for
+any other index value. The
+<structfield>v4l2_frmsizeenum.type</structfield> field is set to
+<constant>V4L2_FRMSIZE_TYPE_CONTINUOUS</constant> by the driver. Of
+the union only the <structfield>stepwise</structfield> member is valid
+and the <structfield>step_width</structfield> and
+<structfield>step_height</structfield> values are set to 1.</para>
+ </listitem>
+ </itemizedlist>
+
+ <para>When the application calls the function with index zero, it
+must check the <structfield>type</structfield> field to determine the
+type of frame size enumeration the device supports. Only for the
+<constant>V4L2_FRMSIZE_TYPE_DISCRETE</constant> type does it make
+sense to increase the index value to receive more frame sizes.</para>
+ <para>Note that the order in which the frame sizes are returned
+has no special meaning. In particular does it not say anything about
+potential default format sizes.</para>
+ <para>Applications can assume that the enumeration data does not
+change without any interaction from the application itself. This means
+that the enumeration data is consistent if the application does not
+perform any other ioctl calls while it runs the frame size
+enumeration.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>Structs</title>
+
+ <para>In the structs below, <emphasis>IN</emphasis> denotes a
+value that has to be filled in by the application,
+<emphasis>OUT</emphasis> denotes values that the driver fills in. The
+application should zero out all members except for the
+<emphasis>IN</emphasis> fields.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-frmsize-discrete">
+ <title>struct <structname>v4l2_frmsize_discrete</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>width</structfield></entry>
+ <entry>Width of the frame [pixel].</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>height</structfield></entry>
+ <entry>Height of the frame [pixel].</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-frmsize-stepwise">
+ <title>struct <structname>v4l2_frmsize_stepwise</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>min_width</structfield></entry>
+ <entry>Minimum frame width [pixel].</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>max_width</structfield></entry>
+ <entry>Maximum frame width [pixel].</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>step_width</structfield></entry>
+ <entry>Frame width step size [pixel].</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>min_height</structfield></entry>
+ <entry>Minimum frame height [pixel].</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>max_height</structfield></entry>
+ <entry>Maximum frame height [pixel].</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>step_height</structfield></entry>
+ <entry>Frame height step size [pixel].</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-frmsizeenum">
+ <title>struct <structname>v4l2_frmsizeenum</structname></title>
+ <tgroup cols="4">
+ <colspec colname="c1" />
+ <colspec colname="c2" />
+ <colspec colname="c3" />
+ <colspec colname="c4" />
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>index</structfield></entry>
+ <entry></entry>
+ <entry>IN: Index of the given frame size in the enumeration.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>pixel_format</structfield></entry>
+ <entry></entry>
+ <entry>IN: Pixel format for which the frame sizes are enumerated.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry></entry>
+ <entry>OUT: Frame size type the device supports.</entry>
+ </row>
+ <row>
+ <entry>union</entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>OUT: Frame size with the given index.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-frmsize-discrete;</entry>
+ <entry><structfield>discrete</structfield></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-frmsize-stepwise;</entry>
+ <entry><structfield>stepwise</structfield></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved[2]</structfield></entry>
+ <entry></entry>
+ <entry>Reserved space for future use.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ <title>Enums</title>
+
+ <table pgwide="1" frame="none" id="v4l2-frmsizetypes">
+ <title>enum <structname>v4l2_frmsizetypes</structname></title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_FRMSIZE_TYPE_DISCRETE</constant></entry>
+ <entry>1</entry>
+ <entry>Discrete frame size.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FRMSIZE_TYPE_CONTINUOUS</constant></entry>
+ <entry>2</entry>
+ <entry>Continuous frame size.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FRMSIZE_TYPE_STEPWISE</constant></entry>
+ <entry>3</entry>
+ <entry>Step-wise defined frame size.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enumaudio.xml b/Documentation/DocBook/media/v4l/vidioc-enumaudio.xml
new file mode 100644
index 0000000..ea816ab
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-enumaudio.xml
@@ -0,0 +1,76 @@
+<refentry id="vidioc-enumaudio">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_ENUMAUDIO</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_ENUMAUDIO</refname>
+ <refpurpose>Enumerate audio inputs</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_audio *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_ENUMAUDIO</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the attributes of an audio input applications
+initialize the <structfield>index</structfield> field and zero out the
+<structfield>reserved</structfield> array of a &v4l2-audio;
+and call the <constant>VIDIOC_ENUMAUDIO</constant> ioctl with a pointer
+to this structure. Drivers fill the rest of the structure or return an
+&EINVAL; when the index is out of bounds. To enumerate all audio
+inputs applications shall begin at index zero, incrementing by one
+until the driver returns <errorcode>EINVAL</errorcode>.</para>
+
+ <para>See <xref linkend="vidioc-g-audio" /> for a description of
+&v4l2-audio;.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The number of the audio input is out of bounds.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enumaudioout.xml b/Documentation/DocBook/media/v4l/vidioc-enumaudioout.xml
new file mode 100644
index 0000000..2e87ced
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-enumaudioout.xml
@@ -0,0 +1,79 @@
+<refentry id="vidioc-enumaudioout">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_ENUMAUDOUT</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_ENUMAUDOUT</refname>
+ <refpurpose>Enumerate audio outputs</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_audioout *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_ENUMAUDOUT</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the attributes of an audio output applications
+initialize the <structfield>index</structfield> field and zero out the
+<structfield>reserved</structfield> array of a &v4l2-audioout; and
+call the <constant>VIDIOC_G_AUDOUT</constant> ioctl with a pointer
+to this structure. Drivers fill the rest of the structure or return an
+&EINVAL; when the index is out of bounds. To enumerate all audio
+outputs applications shall begin at index zero, incrementing by one
+until the driver returns <errorcode>EINVAL</errorcode>.</para>
+
+ <para>Note connectors on a TV card to loop back the received audio
+signal to a sound card are not audio outputs in this sense.</para>
+
+ <para>See <xref linkend="vidioc-g-audioout" /> for a description of
+&v4l2-audioout;.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The number of the audio output is out of bounds.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/v4l/vidioc-enuminput.xml b/Documentation/DocBook/media/v4l/vidioc-enuminput.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-enuminput.xml
rename to Documentation/DocBook/media/v4l/vidioc-enuminput.xml
diff --git a/Documentation/DocBook/v4l/vidioc-enumoutput.xml b/Documentation/DocBook/media/v4l/vidioc-enumoutput.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-enumoutput.xml
rename to Documentation/DocBook/media/v4l/vidioc-enumoutput.xml
diff --git a/Documentation/DocBook/v4l/vidioc-enumstd.xml b/Documentation/DocBook/media/v4l/vidioc-enumstd.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-enumstd.xml
rename to Documentation/DocBook/media/v4l/vidioc-enumstd.xml
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-audio.xml b/Documentation/DocBook/media/v4l/vidioc-g-audio.xml
new file mode 100644
index 0000000..d7bb9b3
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-audio.xml
@@ -0,0 +1,172 @@
+<refentry id="vidioc-g-audio">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_AUDIO, VIDIOC_S_AUDIO</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_AUDIO</refname>
+ <refname>VIDIOC_S_AUDIO</refname>
+ <refpurpose>Query or select the current audio input and its
+attributes</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_audio *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>const struct v4l2_audio *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_AUDIO, VIDIOC_S_AUDIO</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the current audio input applications zero out the
+<structfield>reserved</structfield> array of a &v4l2-audio;
+and call the <constant>VIDIOC_G_AUDIO</constant> ioctl with a pointer
+to this structure. Drivers fill the rest of the structure or return an
+&EINVAL; when the device has no audio inputs, or none which combine
+with the current video input.</para>
+
+ <para>Audio inputs have one writable property, the audio mode. To
+select the current audio input <emphasis>and</emphasis> change the
+audio mode, applications initialize the
+<structfield>index</structfield> and <structfield>mode</structfield>
+fields, and the
+<structfield>reserved</structfield> array of a
+<structname>v4l2_audio</structname> structure and call the
+<constant>VIDIOC_S_AUDIO</constant> ioctl. Drivers may switch to a
+different audio mode if the request cannot be satisfied. However, this
+is a write-only ioctl, it does not return the actual new audio
+mode.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-audio">
+ <title>struct <structname>v4l2_audio</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>index</structfield></entry>
+ <entry>Identifies the audio input, set by the
+driver or application.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>name</structfield>[32]</entry>
+ <entry>Name of the audio input, a NUL-terminated ASCII
+string, for example: "Line In". This information is intended for the
+user, preferably the connector label on the device itself.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>capability</structfield></entry>
+ <entry>Audio capability flags, see <xref
+ linkend="audio-capability" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>mode</structfield></entry>
+ <entry>Audio mode flags set by drivers and applications (on
+ <constant>VIDIOC_S_AUDIO</constant> ioctl), see <xref linkend="audio-mode" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[2]</entry>
+ <entry>Reserved for future extensions. Drivers and
+applications must set the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="audio-capability">
+ <title>Audio Capability Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_AUDCAP_STEREO</constant></entry>
+ <entry>0x00001</entry>
+ <entry>This is a stereo input. The flag is intended to
+automatically disable stereo recording etc. when the signal is always
+monaural. The API provides no means to detect if stereo is
+<emphasis>received</emphasis>, unless the audio input belongs to a
+tuner.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_AUDCAP_AVL</constant></entry>
+ <entry>0x00002</entry>
+ <entry>Automatic Volume Level mode is supported.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="audio-mode">
+ <title>Audio Mode Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_AUDMODE_AVL</constant></entry>
+ <entry>0x00001</entry>
+ <entry>AVL mode is on.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>No audio inputs combine with the current video input,
+or the number of the selected audio input is out of bounds or it does
+not combine.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-audioout.xml b/Documentation/DocBook/media/v4l/vidioc-g-audioout.xml
new file mode 100644
index 0000000..200a270
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-audioout.xml
@@ -0,0 +1,138 @@
+<refentry id="vidioc-g-audioout">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_AUDOUT, VIDIOC_S_AUDOUT</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_AUDOUT</refname>
+ <refname>VIDIOC_S_AUDOUT</refname>
+ <refpurpose>Query or select the current audio output</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_audioout *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>const struct v4l2_audioout *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_AUDOUT, VIDIOC_S_AUDOUT</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the current audio output applications zero out the
+<structfield>reserved</structfield> array of a &v4l2-audioout; and
+call the <constant>VIDIOC_G_AUDOUT</constant> ioctl with a pointer
+to this structure. Drivers fill the rest of the structure or return an
+&EINVAL; when the device has no audio inputs, or none which combine
+with the current video output.</para>
+
+ <para>Audio outputs have no writable properties. Nevertheless, to
+select the current audio output applications can initialize the
+<structfield>index</structfield> field and
+<structfield>reserved</structfield> array (which in the future may
+contain writable properties) of a
+<structname>v4l2_audioout</structname> structure and call the
+<constant>VIDIOC_S_AUDOUT</constant> ioctl. Drivers switch to the
+requested output or return the &EINVAL; when the index is out of
+bounds. This is a write-only ioctl, it does not return the current
+audio output attributes as <constant>VIDIOC_G_AUDOUT</constant>
+does.</para>
+
+ <para>Note connectors on a TV card to loop back the received audio
+signal to a sound card are not audio outputs in this sense.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-audioout">
+ <title>struct <structname>v4l2_audioout</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>index</structfield></entry>
+ <entry>Identifies the audio output, set by the
+driver or application.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>name</structfield>[32]</entry>
+ <entry>Name of the audio output, a NUL-terminated ASCII
+string, for example: "Line Out". This information is intended for the
+user, preferably the connector label on the device itself.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>capability</structfield></entry>
+ <entry>Audio capability flags, none defined yet. Drivers
+must set this field to zero.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>mode</structfield></entry>
+ <entry>Audio mode, none defined yet. Drivers and
+applications (on <constant>VIDIOC_S_AUDOUT</constant>) must set this
+field to zero.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[2]</entry>
+ <entry>Reserved for future extensions. Drivers and
+applications must set the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>No audio outputs combine with the current video
+output, or the number of the selected audio output is out of bounds or
+it does not combine.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-crop.xml b/Documentation/DocBook/media/v4l/vidioc-g-crop.xml
new file mode 100644
index 0000000..01a5064
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-crop.xml
@@ -0,0 +1,126 @@
+<refentry id="vidioc-g-crop">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_CROP, VIDIOC_S_CROP</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_CROP</refname>
+ <refname>VIDIOC_S_CROP</refname>
+ <refpurpose>Get or set the current cropping rectangle</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_crop *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>const struct v4l2_crop *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_CROP, VIDIOC_S_CROP</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the cropping rectangle size and position
+applications set the <structfield>type</structfield> field of a
+<structname>v4l2_crop</structname> structure to the respective buffer
+(stream) type and call the <constant>VIDIOC_G_CROP</constant> ioctl
+with a pointer to this structure. The driver fills the rest of the
+structure or returns the &EINVAL; if cropping is not supported.</para>
+
+ <para>To change the cropping rectangle applications initialize the
+<structfield>type</structfield> and &v4l2-rect; substructure named
+<structfield>c</structfield> of a v4l2_crop structure and call the
+<constant>VIDIOC_S_CROP</constant> ioctl with a pointer to this
+structure.</para>
+
+ <para>The driver first adjusts the requested dimensions against
+hardware limits, &ie; the bounds given by the capture/output window,
+and it rounds to the closest possible values of horizontal and
+vertical offset, width and height. In particular the driver must round
+the vertical offset of the cropping rectangle to frame lines modulo
+two, such that the field order cannot be confused.</para>
+
+ <para>Second the driver adjusts the image size (the opposite
+rectangle of the scaling process, source or target depending on the
+data direction) to the closest size possible while maintaining the
+current horizontal and vertical scaling factor.</para>
+
+ <para>Finally the driver programs the hardware with the actual
+cropping and image parameters. <constant>VIDIOC_S_CROP</constant> is a
+write-only ioctl, it does not return the actual parameters. To query
+them applications must call <constant>VIDIOC_G_CROP</constant> and
+&VIDIOC-G-FMT;. When the parameters are unsuitable the application may
+modify the cropping or image parameters and repeat the cycle until
+satisfactory parameters have been negotiated.</para>
+
+ <para>When cropping is not supported then no parameters are
+changed and <constant>VIDIOC_S_CROP</constant> returns the
+&EINVAL;.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-crop">
+ <title>struct <structname>v4l2_crop</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>&v4l2-buf-type;</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry>Type of the data stream, set by the application.
+Only these types are valid here: <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>,
+<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>,
+<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>, and custom (driver
+defined) types with code <constant>V4L2_BUF_TYPE_PRIVATE</constant>
+and higher.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-rect;</entry>
+ <entry><structfield>c</structfield></entry>
+ <entry>Cropping rectangle. The same co-ordinate system as
+for &v4l2-cropcap; <structfield>bounds</structfield> is used.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-ctrl.xml b/Documentation/DocBook/media/v4l/vidioc-g-ctrl.xml
new file mode 100644
index 0000000..5146d00
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-ctrl.xml
@@ -0,0 +1,137 @@
+<refentry id="vidioc-g-ctrl">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_CTRL, VIDIOC_S_CTRL</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_CTRL</refname>
+ <refname>VIDIOC_S_CTRL</refname>
+ <refpurpose>Get or set the value of a control</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_control
+*<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_CTRL, VIDIOC_S_CTRL</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To get the current value of a control applications
+initialize the <structfield>id</structfield> field of a struct
+<structname>v4l2_control</structname> and call the
+<constant>VIDIOC_G_CTRL</constant> ioctl with a pointer to this
+structure. To change the value of a control applications initialize
+the <structfield>id</structfield> and <structfield>value</structfield>
+fields of a struct <structname>v4l2_control</structname> and call the
+<constant>VIDIOC_S_CTRL</constant> ioctl.</para>
+
+ <para>When the <structfield>id</structfield> is invalid drivers
+return an &EINVAL;. When the <structfield>value</structfield> is out
+of bounds drivers can choose to take the closest valid value or return
+an &ERANGE;, whatever seems more appropriate. However,
+<constant>VIDIOC_S_CTRL</constant> is a write-only ioctl, it does not
+return the actual new value.</para>
+
+ <para>These ioctls work only with user controls. For other
+control classes the &VIDIOC-G-EXT-CTRLS;, &VIDIOC-S-EXT-CTRLS; or
+&VIDIOC-TRY-EXT-CTRLS; must be used.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-control">
+ <title>struct <structname>v4l2_control</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>id</structfield></entry>
+ <entry>Identifies the control, set by the
+application.</entry>
+ </row>
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>value</structfield></entry>
+ <entry>New value or current value.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The &v4l2-control; <structfield>id</structfield> is
+invalid.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>ERANGE</errorcode></term>
+ <listitem>
+ <para>The &v4l2-control; <structfield>value</structfield>
+is out of bounds.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EBUSY</errorcode></term>
+ <listitem>
+ <para>The control is temporarily not changeable, possibly
+because another applications took over control of the device function
+this control belongs to.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EACCES</errorcode></term>
+ <listitem>
+ <para>Attempt to set a read-only control or to get a
+ write-only control.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
+
+<!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "v4l2.sgml"
+indent-tabs-mode: nil
+End:
+-->
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml b/Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml
new file mode 100644
index 0000000..7940c11
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml
@@ -0,0 +1,104 @@
+<refentry id="vidioc-g-dv-preset">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_DV_PRESET, VIDIOC_S_DV_PRESET</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_DV_PRESET</refname>
+ <refname>VIDIOC_S_DV_PRESET</refname>
+ <refpurpose>Query or select the DV preset of the current input or output</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_dv_preset *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_DV_PRESET, VIDIOC_S_DV_PRESET</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+ <para>To query and select the current DV preset, applications
+use the <constant>VIDIOC_G_DV_PRESET</constant> and <constant>VIDIOC_S_DV_PRESET</constant>
+ioctls which take a pointer to a &v4l2-dv-preset; type as argument.
+Applications must zero the reserved array in &v4l2-dv-preset;.
+<constant>VIDIOC_G_DV_PRESET</constant> returns a dv preset in the field
+<structfield>preset</structfield> of &v4l2-dv-preset;.</para>
+
+ <para><constant>VIDIOC_S_DV_PRESET</constant> accepts a pointer to a &v4l2-dv-preset;
+that has the preset value to be set. Applications must zero the reserved array in &v4l2-dv-preset;.
+If the preset is not supported, it returns an &EINVAL; </para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>This ioctl is not supported, or the
+<constant>VIDIOC_S_DV_PRESET</constant>,<constant>VIDIOC_S_DV_PRESET</constant> parameter was unsuitable.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EBUSY</errorcode></term>
+ <listitem>
+ <para>The device is busy and therefore can not change the preset.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+
+ <table pgwide="1" frame="none" id="v4l2-dv-preset">
+ <title>struct <structname>v4l2_dv_preset</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>preset</structfield></entry>
+ <entry>Preset value to represent the digital video timings</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved[4]</structfield></entry>
+ <entry>Reserved fields for future use</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml b/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml
new file mode 100644
index 0000000..4a8648a
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml
@@ -0,0 +1,218 @@
+<refentry id="vidioc-g-dv-timings">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_DV_TIMINGS, VIDIOC_S_DV_TIMINGS</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_DV_TIMINGS</refname>
+ <refname>VIDIOC_S_DV_TIMINGS</refname>
+ <refpurpose>Get or set custom DV timings for input or output</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_dv_timings *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_DV_TIMINGS, VIDIOC_S_DV_TIMINGS</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+ <para>To set custom DV timings for the input or output, applications use the
+<constant>VIDIOC_S_DV_TIMINGS</constant> ioctl and to get the current custom timings,
+applications use the <constant>VIDIOC_G_DV_TIMINGS</constant> ioctl. The detailed timing
+information is filled in using the structure &v4l2-dv-timings;. These ioctls take
+a pointer to the &v4l2-dv-timings; structure as argument. If the ioctl is not supported
+or the timing values are not correct, the driver returns &EINVAL;.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>This ioctl is not supported, or the
+<constant>VIDIOC_S_DV_TIMINGS</constant> parameter was unsuitable.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EBUSY</errorcode></term>
+ <listitem>
+ <para>The device is busy and therefore can not change the timings.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+
+ <table pgwide="1" frame="none" id="v4l2-bt-timings">
+ <title>struct <structname>v4l2_bt_timings</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>width</structfield></entry>
+ <entry>Width of the active video in pixels</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>height</structfield></entry>
+ <entry>Height of the active video in lines</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>interlaced</structfield></entry>
+ <entry>Progressive (0) or interlaced (1)</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>polarities</structfield></entry>
+ <entry>This is a bit mask that defines polarities of sync signals.
+bit 0 (V4L2_DV_VSYNC_POS_POL) is for vertical sync polarity and bit 1 (V4L2_DV_HSYNC_POS_POL) is for horizontal sync polarity. If the bit is set
+(1) it is positive polarity and if is cleared (0), it is negative polarity.</entry>
+ </row>
+ <row>
+ <entry>__u64</entry>
+ <entry><structfield>pixelclock</structfield></entry>
+ <entry>Pixel clock in Hz. Ex. 74.25MHz->74250000</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>hfrontporch</structfield></entry>
+ <entry>Horizontal front porch in pixels</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>hsync</structfield></entry>
+ <entry>Horizontal sync length in pixels</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>hbackporch</structfield></entry>
+ <entry>Horizontal back porch in pixels</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>vfrontporch</structfield></entry>
+ <entry>Vertical front porch in lines</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>vsync</structfield></entry>
+ <entry>Vertical sync length in lines</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>vbackporch</structfield></entry>
+ <entry>Vertical back porch in lines</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>il_vfrontporch</structfield></entry>
+ <entry>Vertical front porch in lines for bottom field of interlaced field formats</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>il_vsync</structfield></entry>
+ <entry>Vertical sync length in lines for bottom field of interlaced field formats</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>il_vbackporch</structfield></entry>
+ <entry>Vertical back porch in lines for bottom field of interlaced field formats</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-dv-timings">
+ <title>struct <structname>v4l2_dv_timings</structname></title>
+ <tgroup cols="4">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry></entry>
+ <entry>Type of DV timings as listed in <xref linkend="dv-timing-types"/>.</entry>
+ </row>
+ <row>
+ <entry>union</entry>
+ <entry><structfield></structfield></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-bt-timings;</entry>
+ <entry><structfield>bt</structfield></entry>
+ <entry>Timings defined by BT.656/1120 specifications</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[32]</entry>
+ <entry></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="dv-timing-types">
+ <title>DV Timing types</title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>Timing type</entry>
+ <entry>value</entry>
+ <entry>Description</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry>V4L2_DV_BT_656_1120</entry>
+ <entry>0</entry>
+ <entry>BT.656/1120 timings</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml b/Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml
new file mode 100644
index 0000000..2aef02c
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml
@@ -0,0 +1,196 @@
+<refentry id="vidioc-g-enc-index">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_ENC_INDEX</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_ENC_INDEX</refname>
+ <refpurpose>Get meta data about a compressed video stream</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_enc_idx *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_ENC_INDEX</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <note>
+ <title>Experimental</title>
+
+ <para>This is an <link linkend="experimental">experimental</link>
+interface and may change in the future.</para>
+ </note>
+
+ <para>The <constant>VIDIOC_G_ENC_INDEX</constant> ioctl provides
+meta data about a compressed video stream the same or another
+application currently reads from the driver, which is useful for
+random access into the stream without decoding it.</para>
+
+ <para>To read the data applications must call
+<constant>VIDIOC_G_ENC_INDEX</constant> with a pointer to a
+&v4l2-enc-idx;. On success the driver fills the
+<structfield>entry</structfield> array, stores the number of elements
+written in the <structfield>entries</structfield> field, and
+initializes the <structfield>entries_cap</structfield> field.</para>
+
+ <para>Each element of the <structfield>entry</structfield> array
+contains meta data about one picture. A
+<constant>VIDIOC_G_ENC_INDEX</constant> call reads up to
+<constant>V4L2_ENC_IDX_ENTRIES</constant> entries from a driver
+buffer, which can hold up to <structfield>entries_cap</structfield>
+entries. This number can be lower or higher than
+<constant>V4L2_ENC_IDX_ENTRIES</constant>, but not zero. When the
+application fails to read the meta data in time the oldest entries
+will be lost. When the buffer is empty or no capturing/encoding is in
+progress, <structfield>entries</structfield> will be zero.</para>
+
+ <para>Currently this ioctl is only defined for MPEG-2 program
+streams and video elementary streams.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-enc-idx">
+ <title>struct <structname>v4l2_enc_idx</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>entries</structfield></entry>
+ <entry>The number of entries the driver stored in the
+<structfield>entry</structfield> array.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>entries_cap</structfield></entry>
+ <entry>The number of entries the driver can
+buffer. Must be greater than zero.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[4]</entry>
+ <entry spanname="hspan">Reserved for future extensions.
+Drivers must set the array to zero.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-enc-idx-entry;</entry>
+ <entry><structfield>entry</structfield>[<constant>V4L2_ENC_IDX_ENTRIES</constant>]</entry>
+ <entry>Meta data about a compressed video stream. Each
+element of the array corresponds to one picture, sorted in ascending
+order by their <structfield>offset</structfield>.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-enc-idx-entry">
+ <title>struct <structname>v4l2_enc_idx_entry</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u64</entry>
+ <entry><structfield>offset</structfield></entry>
+ <entry>The offset in bytes from the beginning of the
+compressed video stream to the beginning of this picture, that is a
+<wordasword>PES packet header</wordasword> as defined in <xref
+ linkend="mpeg2part1" /> or a <wordasword>picture
+header</wordasword> as defined in <xref linkend="mpeg2part2" />. When
+the encoder is stopped, the driver resets the offset to zero.</entry>
+ </row>
+ <row>
+ <entry>__u64</entry>
+ <entry><structfield>pts</structfield></entry>
+ <entry>The 33 bit <wordasword>Presentation Time
+Stamp</wordasword> of this picture as defined in <xref
+ linkend="mpeg2part1" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>length</structfield></entry>
+ <entry>The length of this picture in bytes.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>flags</structfield></entry>
+ <entry>Flags containing the coding type of this picture, see <xref
+ linkend="enc-idx-flags" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[2]</entry>
+ <entry>Reserved for future extensions.
+Drivers must set the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="enc-idx-flags">
+ <title>Index Entry Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_ENC_IDX_FRAME_I</constant></entry>
+ <entry>0x00</entry>
+ <entry>This is an Intra-coded picture.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_ENC_IDX_FRAME_P</constant></entry>
+ <entry>0x01</entry>
+ <entry>This is a Predictive-coded picture.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_ENC_IDX_FRAME_B</constant></entry>
+ <entry>0x02</entry>
+ <entry>This is a Bidirectionally predictive-coded
+picture.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_ENC_IDX_FRAME_MASK</constant></entry>
+ <entry>0x0F</entry>
+ <entry><wordasword>AND</wordasword> the flags field with
+this mask to obtain the picture coding type.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml b/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
new file mode 100644
index 0000000..5122ce8
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
@@ -0,0 +1,321 @@
+<refentry id="vidioc-g-ext-ctrls">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_EXT_CTRLS, VIDIOC_S_EXT_CTRLS,
+VIDIOC_TRY_EXT_CTRLS</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_EXT_CTRLS</refname>
+ <refname>VIDIOC_S_EXT_CTRLS</refname>
+ <refname>VIDIOC_TRY_EXT_CTRLS</refname>
+ <refpurpose>Get or set the value of several controls, try control
+values</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_ext_controls
+*<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_EXT_CTRLS, VIDIOC_S_EXT_CTRLS,
+VIDIOC_TRY_EXT_CTRLS</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>These ioctls allow the caller to get or set multiple
+controls atomically. Control IDs are grouped into control classes (see
+<xref linkend="ctrl-class" />) and all controls in the control array
+must belong to the same control class.</para>
+
+ <para>Applications must always fill in the
+<structfield>count</structfield>,
+<structfield>ctrl_class</structfield>,
+<structfield>controls</structfield> and
+<structfield>reserved</structfield> fields of &v4l2-ext-controls;, and
+initialize the &v4l2-ext-control; array pointed to by the
+<structfield>controls</structfield> fields.</para>
+
+ <para>To get the current value of a set of controls applications
+initialize the <structfield>id</structfield>,
+<structfield>size</structfield> and <structfield>reserved2</structfield> fields
+of each &v4l2-ext-control; and call the
+<constant>VIDIOC_G_EXT_CTRLS</constant> ioctl. String controls controls
+must also set the <structfield>string</structfield> field.</para>
+
+ <para>If the <structfield>size</structfield> is too small to
+receive the control result (only relevant for pointer-type controls
+like strings), then the driver will set <structfield>size</structfield>
+to a valid value and return an &ENOSPC;. You should re-allocate the
+string memory to this new size and try again. It is possible that the
+same issue occurs again if the string has grown in the meantime. It is
+recommended to call &VIDIOC-QUERYCTRL; first and use
+<structfield>maximum</structfield>+1 as the new <structfield>size</structfield>
+value. It is guaranteed that that is sufficient memory.
+</para>
+
+ <para>To change the value of a set of controls applications
+initialize the <structfield>id</structfield>, <structfield>size</structfield>,
+<structfield>reserved2</structfield> and
+<structfield>value/string</structfield> fields of each &v4l2-ext-control; and
+call the <constant>VIDIOC_S_EXT_CTRLS</constant> ioctl. The controls
+will only be set if <emphasis>all</emphasis> control values are
+valid.</para>
+
+ <para>To check if a set of controls have correct values applications
+initialize the <structfield>id</structfield>, <structfield>size</structfield>,
+<structfield>reserved2</structfield> and
+<structfield>value/string</structfield> fields of each &v4l2-ext-control; and
+call the <constant>VIDIOC_TRY_EXT_CTRLS</constant> ioctl. It is up to
+the driver whether wrong values are automatically adjusted to a valid
+value or if an error is returned.</para>
+
+ <para>When the <structfield>id</structfield> or
+<structfield>ctrl_class</structfield> is invalid drivers return an
+&EINVAL;. When the value is out of bounds drivers can choose to take
+the closest valid value or return an &ERANGE;, whatever seems more
+appropriate. In the first case the new value is set in
+&v4l2-ext-control;.</para>
+
+ <para>The driver will only set/get these controls if all control
+values are correct. This prevents the situation where only some of the
+controls were set/get. Only low-level errors (⪚ a failed i2c
+command) can still cause this situation.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-ext-control">
+ <title>struct <structname>v4l2_ext_control</structname></title>
+ <tgroup cols="4">
+ &cs-ustr;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>id</structfield></entry>
+ <entry></entry>
+ <entry>Identifies the control, set by the
+application.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>size</structfield></entry>
+ <entry></entry>
+ <entry>The total size in bytes of the payload of this
+control. This is normally 0, but for pointer controls this should be
+set to the size of the memory containing the payload, or that will
+receive the payload. If <constant>VIDIOC_G_EXT_CTRLS</constant> finds
+that this value is less than is required to store
+the payload result, then it is set to a value large enough to store the
+payload result and ENOSPC is returned. Note that for string controls
+this <structfield>size</structfield> field should not be confused with the length of the string.
+This field refers to the size of the memory that contains the string.
+The actual <emphasis>length</emphasis> of the string may well be much smaller.
+</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved2</structfield>[1]</entry>
+ <entry></entry>
+ <entry>Reserved for future extensions. Drivers and
+applications must set the array to zero.</entry>
+ </row>
+ <row>
+ <entry>union</entry>
+ <entry>(anonymous)</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__s32</entry>
+ <entry><structfield>value</structfield></entry>
+ <entry>New value or current value.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__s64</entry>
+ <entry><structfield>value64</structfield></entry>
+ <entry>New value or current value.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>char *</entry>
+ <entry><structfield>string</structfield></entry>
+ <entry>A pointer to a string.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-ext-controls">
+ <title>struct <structname>v4l2_ext_controls</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>ctrl_class</structfield></entry>
+ <entry>The control class to which all controls belong, see
+<xref linkend="ctrl-class" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>count</structfield></entry>
+ <entry>The number of controls in the controls array. May
+also be zero.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>error_idx</structfield></entry>
+ <entry>Set by the driver in case of an error. It is the
+index of the control causing the error or equal to 'count' when the
+error is not associated with a particular control. Undefined when the
+ioctl returns 0 (success).</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[2]</entry>
+ <entry>Reserved for future extensions. Drivers and
+applications must set the array to zero.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-ext-control; *</entry>
+ <entry><structfield>controls</structfield></entry>
+ <entry>Pointer to an array of
+<structfield>count</structfield> v4l2_ext_control structures. Ignored
+if <structfield>count</structfield> equals zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="ctrl-class">
+ <title>Control classes</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_CTRL_CLASS_USER</constant></entry>
+ <entry>0x980000</entry>
+ <entry>The class containing user controls. These controls
+are described in <xref linkend="control" />. All controls that can be set
+using the &VIDIOC-S-CTRL; and &VIDIOC-G-CTRL; ioctl belong to this
+class.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_CLASS_MPEG</constant></entry>
+ <entry>0x990000</entry>
+ <entry>The class containing MPEG compression controls.
+These controls are described in <xref
+ linkend="mpeg-controls" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_CLASS_CAMERA</constant></entry>
+ <entry>0x9a0000</entry>
+ <entry>The class containing camera controls.
+These controls are described in <xref
+ linkend="camera-controls" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_CLASS_FM_TX</constant></entry>
+ <entry>0x9b0000</entry>
+ <entry>The class containing FM Transmitter (FM TX) controls.
+These controls are described in <xref
+ linkend="fm-tx-controls" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_CLASS_FLASH</constant></entry>
+ <entry>0x9c0000</entry>
+ <entry>The class containing flash device controls.
+These controls are described in <xref
+ linkend="flash-controls" />.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The &v4l2-ext-control; <structfield>id</structfield>
+is invalid or the &v4l2-ext-controls;
+<structfield>ctrl_class</structfield> is invalid. This error code is
+also returned by the <constant>VIDIOC_S_EXT_CTRLS</constant> and
+<constant>VIDIOC_TRY_EXT_CTRLS</constant> ioctls if two or more
+control values are in conflict.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>ERANGE</errorcode></term>
+ <listitem>
+ <para>The &v4l2-ext-control; <structfield>value</structfield>
+is out of bounds.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EBUSY</errorcode></term>
+ <listitem>
+ <para>The control is temporarily not changeable, possibly
+because another applications took over control of the device function
+this control belongs to.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>ENOSPC</errorcode></term>
+ <listitem>
+ <para>The space reserved for the control's payload is insufficient.
+The field <structfield>size</structfield> is set to a value that is enough
+to store the payload and this error code is returned.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EACCES</errorcode></term>
+ <listitem>
+ <para>Attempt to try or set a read-only control or to get a
+ write-only control.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
+
+<!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "v4l2.sgml"
+indent-tabs-mode: nil
+End:
+-->
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml b/Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml
new file mode 100644
index 0000000..0557182
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml
@@ -0,0 +1,456 @@
+<refentry id="vidioc-g-fbuf">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_FBUF, VIDIOC_S_FBUF</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_FBUF</refname>
+ <refname>VIDIOC_S_FBUF</refname>
+ <refpurpose>Get or set frame buffer overlay parameters</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_framebuffer *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>const struct v4l2_framebuffer *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_FBUF, VIDIOC_S_FBUF</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>Applications can use the <constant>VIDIOC_G_FBUF</constant> and
+<constant>VIDIOC_S_FBUF</constant> ioctl to get and set the
+framebuffer parameters for a <link linkend="overlay">Video
+Overlay</link> or <link linkend="osd">Video Output Overlay</link>
+(OSD). The type of overlay is implied by the device type (capture or
+output device) and can be determined with the &VIDIOC-QUERYCAP; ioctl.
+One <filename>/dev/videoN</filename> device must not support both
+kinds of overlay.</para>
+
+ <para>The V4L2 API distinguishes destructive and non-destructive
+overlays. A destructive overlay copies captured video images into the
+video memory of a graphics card. A non-destructive overlay blends
+video images into a VGA signal or graphics into a video signal.
+<wordasword>Video Output Overlays</wordasword> are always
+non-destructive.</para>
+
+ <para>To get the current parameters applications call the
+<constant>VIDIOC_G_FBUF</constant> ioctl with a pointer to a
+<structname>v4l2_framebuffer</structname> structure. The driver fills
+all fields of the structure or returns an &EINVAL; when overlays are
+not supported.</para>
+
+ <para>To set the parameters for a <wordasword>Video Output
+Overlay</wordasword>, applications must initialize the
+<structfield>flags</structfield> field of a struct
+<structname>v4l2_framebuffer</structname>. Since the framebuffer is
+implemented on the TV card all other parameters are determined by the
+driver. When an application calls <constant>VIDIOC_S_FBUF</constant>
+with a pointer to this structure, the driver prepares for the overlay
+and returns the framebuffer parameters as
+<constant>VIDIOC_G_FBUF</constant> does, or it returns an error
+code.</para>
+
+ <para>To set the parameters for a <wordasword>non-destructive
+Video Overlay</wordasword>, applications must initialize the
+<structfield>flags</structfield> field, the
+<structfield>fmt</structfield> substructure, and call
+<constant>VIDIOC_S_FBUF</constant>. Again the driver prepares for the
+overlay and returns the framebuffer parameters as
+<constant>VIDIOC_G_FBUF</constant> does, or it returns an error
+code.</para>
+
+ <para>For a <wordasword>destructive Video Overlay</wordasword>
+applications must additionally provide a
+<structfield>base</structfield> address. Setting up a DMA to a
+random memory location can jeopardize the system security, its
+stability or even damage the hardware, therefore only the superuser
+can set the parameters for a destructive video overlay.</para>
+
+ <!-- NB v4l2_pix_format is also specified in pixfmt.sgml.-->
+
+ <table pgwide="1" frame="none" id="v4l2-framebuffer">
+ <title>struct <structname>v4l2_framebuffer</structname></title>
+ <tgroup cols="4">
+ &cs-ustr;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>capability</structfield></entry>
+ <entry></entry>
+ <entry>Overlay capability flags set by the driver, see
+<xref linkend="framebuffer-cap" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>flags</structfield></entry>
+ <entry></entry>
+ <entry>Overlay control flags set by application and
+driver, see <xref linkend="framebuffer-flags" /></entry>
+ </row>
+ <row>
+ <entry>void *</entry>
+ <entry><structfield>base</structfield></entry>
+ <entry></entry>
+ <entry>Physical base address of the framebuffer,
+that is the address of the pixel in the top left corner of the
+framebuffer.<footnote><para>A physical base address may not suit all
+platforms. GK notes in theory we should pass something like PCI device
++ memory region + offset instead. If you encounter problems please
+discuss on the linux-media mailing list: &v4l-ml;.</para></footnote></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>This field is irrelevant to
+<wordasword>non-destructive Video Overlays</wordasword>. For
+<wordasword>destructive Video Overlays</wordasword> applications must
+provide a base address. The driver may accept only base addresses
+which are a multiple of two, four or eight bytes. For
+<wordasword>Video Output Overlays</wordasword> the driver must return
+a valid base address, so applications can find the corresponding Linux
+framebuffer device (see <xref linkend="osd" />).</entry>
+ </row>
+ <row>
+ <entry>&v4l2-pix-format;</entry>
+ <entry><structfield>fmt</structfield></entry>
+ <entry></entry>
+ <entry>Layout of the frame buffer. The
+<structname>v4l2_pix_format</structname> structure is defined in <xref
+linkend="pixfmt" />, for clarification the fields and acceptable values
+ are listed below:</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u32</entry>
+ <entry><structfield>width</structfield></entry>
+ <entry>Width of the frame buffer in pixels.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u32</entry>
+ <entry><structfield>height</structfield></entry>
+ <entry>Height of the frame buffer in pixels.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u32</entry>
+ <entry><structfield>pixelformat</structfield></entry>
+ <entry>The pixel format of the
+framebuffer.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>For <wordasword>non-destructive Video
+Overlays</wordasword> this field only defines a format for the
+&v4l2-window; <structfield>chromakey</structfield> field.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>For <wordasword>destructive Video
+Overlays</wordasword> applications must initialize this field. For
+<wordasword>Video Output Overlays</wordasword> the driver must return
+a valid format.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry>Usually this is an RGB format (for example
+<link linkend="V4L2-PIX-FMT-RGB565"><constant>V4L2_PIX_FMT_RGB565</constant></link>)
+but YUV formats (only packed YUV formats when chroma keying is used,
+not including <constant>V4L2_PIX_FMT_YUYV</constant> and
+<constant>V4L2_PIX_FMT_UYVY</constant>) and the
+<constant>V4L2_PIX_FMT_PAL8</constant> format are also permitted. The
+behavior of the driver when an application requests a compressed
+format is undefined. See <xref linkend="pixfmt" /> for information on
+pixel formats.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-field;</entry>
+ <entry><structfield>field</structfield></entry>
+ <entry>Drivers and applications shall ignore this field.
+If applicable, the field order is selected with the &VIDIOC-S-FMT;
+ioctl, using the <structfield>field</structfield> field of
+&v4l2-window;.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u32</entry>
+ <entry><structfield>bytesperline</structfield></entry>
+ <entry>Distance in bytes between the leftmost pixels in
+two adjacent lines.</entry>
+ </row>
+ <row>
+ <entry spanname="hspan"><para>This field is irrelevant to
+<wordasword>non-destructive Video
+Overlays</wordasword>.</para><para>For <wordasword>destructive Video
+Overlays</wordasword> both applications and drivers can set this field
+to request padding bytes at the end of each line. Drivers however may
+ignore the requested value, returning <structfield>width</structfield>
+times bytes-per-pixel or a larger value required by the hardware. That
+implies applications can just set this field to zero to get a
+reasonable default.</para><para>For <wordasword>Video Output
+Overlays</wordasword> the driver must return a valid
+value.</para><para>Video hardware may access padding bytes, therefore
+they must reside in accessible memory. Consider for example the case
+where padding bytes after the last line of an image cross a system
+page boundary. Capture devices may write padding bytes, the value is
+undefined. Output devices ignore the contents of padding
+bytes.</para><para>When the image format is planar the
+<structfield>bytesperline</structfield> value applies to the largest
+plane and is divided by the same factor as the
+<structfield>width</structfield> field for any smaller planes. For
+example the Cb and Cr planes of a YUV 4:2:0 image have half as many
+padding bytes following each line as the Y plane. To avoid ambiguities
+drivers must return a <structfield>bytesperline</structfield> value
+rounded up to a multiple of the scale factor.</para></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u32</entry>
+ <entry><structfield>sizeimage</structfield></entry>
+ <entry><para>This field is irrelevant to
+<wordasword>non-destructive Video Overlays</wordasword>. For
+<wordasword>destructive Video Overlays</wordasword> applications must
+initialize this field. For <wordasword>Video Output
+Overlays</wordasword> the driver must return a valid
+format.</para><para>Together with <structfield>base</structfield> it
+defines the framebuffer memory accessible by the
+driver.</para></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-colorspace;</entry>
+ <entry><structfield>colorspace</structfield></entry>
+ <entry>This information supplements the
+<structfield>pixelformat</structfield> and must be set by the driver,
+see <xref linkend="colorspaces" />.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u32</entry>
+ <entry><structfield>priv</structfield></entry>
+ <entry>Reserved for additional information about custom
+(driver defined) formats. When not used drivers and applications must
+set this field to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="framebuffer-cap">
+ <title>Frame Buffer Capability Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_FBUF_CAP_EXTERNOVERLAY</constant></entry>
+ <entry>0x0001</entry>
+ <entry>The device is capable of non-destructive overlays.
+When the driver clears this flag, only destructive overlays are
+supported. There are no drivers yet which support both destructive and
+non-destructive overlays.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FBUF_CAP_CHROMAKEY</constant></entry>
+ <entry>0x0002</entry>
+ <entry>The device supports clipping by chroma-keying the
+images. That is, image pixels replace pixels in the VGA or video
+signal only where the latter assume a certain color. Chroma-keying
+makes no sense for destructive overlays.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FBUF_CAP_LIST_CLIPPING</constant></entry>
+ <entry>0x0004</entry>
+ <entry>The device supports clipping using a list of clip
+rectangles.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FBUF_CAP_BITMAP_CLIPPING</constant></entry>
+ <entry>0x0008</entry>
+ <entry>The device supports clipping using a bit mask.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FBUF_CAP_LOCAL_ALPHA</constant></entry>
+ <entry>0x0010</entry>
+ <entry>The device supports clipping/blending using the
+alpha channel of the framebuffer or VGA signal. Alpha blending makes
+no sense for destructive overlays.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FBUF_CAP_GLOBAL_ALPHA</constant></entry>
+ <entry>0x0020</entry>
+ <entry>The device supports alpha blending using a global
+alpha value. Alpha blending makes no sense for destructive overlays.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FBUF_CAP_LOCAL_INV_ALPHA</constant></entry>
+ <entry>0x0040</entry>
+ <entry>The device supports clipping/blending using the
+inverted alpha channel of the framebuffer or VGA signal. Alpha
+blending makes no sense for destructive overlays.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FBUF_CAP_SRC_CHROMAKEY</constant></entry>
+ <entry>0x0080</entry>
+ <entry>The device supports Source Chroma-keying. Framebuffer pixels
+with the chroma-key colors are replaced by video pixels, which is exactly opposite of
+<constant>V4L2_FBUF_CAP_CHROMAKEY</constant></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="framebuffer-flags">
+ <title>Frame Buffer Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_FBUF_FLAG_PRIMARY</constant></entry>
+ <entry>0x0001</entry>
+ <entry>The framebuffer is the primary graphics surface.
+In other words, the overlay is destructive. [?]</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FBUF_FLAG_OVERLAY</constant></entry>
+ <entry>0x0002</entry>
+ <entry>The frame buffer is an overlay surface the same
+size as the capture. [?]</entry>
+ </row>
+ <row>
+ <entry spanname="hspan">The purpose of
+<constant>V4L2_FBUF_FLAG_PRIMARY</constant> and
+<constant>V4L2_FBUF_FLAG_OVERLAY</constant> was never quite clear.
+Most drivers seem to ignore these flags. For compatibility with the
+<wordasword>bttv</wordasword> driver applications should set the
+<constant>V4L2_FBUF_FLAG_OVERLAY</constant> flag.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FBUF_FLAG_CHROMAKEY</constant></entry>
+ <entry>0x0004</entry>
+ <entry>Use chroma-keying. The chroma-key color is
+determined by the <structfield>chromakey</structfield> field of
+&v4l2-window; and negotiated with the &VIDIOC-S-FMT; ioctl, see <xref
+ linkend="overlay" />
+and
+ <xref linkend="osd" />.</entry>
+ </row>
+ <row>
+ <entry spanname="hspan">There are no flags to enable
+clipping using a list of clip rectangles or a bitmap. These methods
+are negotiated with the &VIDIOC-S-FMT; ioctl, see <xref
+ linkend="overlay" /> and <xref linkend="osd" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FBUF_FLAG_LOCAL_ALPHA</constant></entry>
+ <entry>0x0008</entry>
+ <entry>Use the alpha channel of the framebuffer to clip or
+blend framebuffer pixels with video images. The blend
+function is: output = framebuffer pixel * alpha + video pixel * (1 -
+alpha). The actual alpha depth depends on the framebuffer pixel
+format.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FBUF_FLAG_GLOBAL_ALPHA</constant></entry>
+ <entry>0x0010</entry>
+ <entry>Use a global alpha value to blend the framebuffer
+with video images. The blend function is: output = (framebuffer pixel
+* alpha + video pixel * (255 - alpha)) / 255. The alpha value is
+determined by the <structfield>global_alpha</structfield> field of
+&v4l2-window; and negotiated with the &VIDIOC-S-FMT; ioctl, see <xref
+ linkend="overlay" />
+and <xref linkend="osd" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FBUF_FLAG_LOCAL_INV_ALPHA</constant></entry>
+ <entry>0x0020</entry>
+ <entry>Like
+<constant>V4L2_FBUF_FLAG_LOCAL_ALPHA</constant>, use the alpha channel
+of the framebuffer to clip or blend framebuffer pixels with video
+images, but with an inverted alpha value. The blend function is:
+output = framebuffer pixel * (1 - alpha) + video pixel * alpha. The
+actual alpha depth depends on the framebuffer pixel format.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FBUF_FLAG_SRC_CHROMAKEY</constant></entry>
+ <entry>0x0040</entry>
+ <entry>Use source chroma-keying. The source chroma-key color is
+determined by the <structfield>chromakey</structfield> field of
+&v4l2-window; and negotiated with the &VIDIOC-S-FMT; ioctl, see <xref
+linkend="overlay" /> and <xref linkend="osd" />.
+Both chroma-keying are mutual exclusive to each other, so same
+<structfield>chromakey</structfield> field of &v4l2-window; is being used.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EPERM</errorcode></term>
+ <listitem>
+ <para><constant>VIDIOC_S_FBUF</constant> can only be called
+by a privileged user to negotiate the parameters for a destructive
+overlay.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The <constant>VIDIOC_S_FBUF</constant> parameters are unsuitable.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-fmt.xml b/Documentation/DocBook/media/v4l/vidioc-g-fmt.xml
new file mode 100644
index 0000000..17fbda1
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-fmt.xml
@@ -0,0 +1,196 @@
+<refentry id="vidioc-g-fmt">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_FMT, VIDIOC_S_FMT,
+VIDIOC_TRY_FMT</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_FMT</refname>
+ <refname>VIDIOC_S_FMT</refname>
+ <refname>VIDIOC_TRY_FMT</refname>
+ <refpurpose>Get or set the data format, try a format</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_format
+*<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_FMT, VIDIOC_S_FMT, VIDIOC_TRY_FMT</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>These ioctls are used to negotiate the format of data
+(typically image format) exchanged between driver and
+application.</para>
+
+ <para>To query the current parameters applications set the
+<structfield>type</structfield> field of a struct
+<structname>v4l2_format</structname> to the respective buffer (stream)
+type. For example video capture devices use
+<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant> or
+<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant>. When the application
+calls the <constant>VIDIOC_G_FMT</constant> ioctl with a pointer to
+this structure the driver fills the respective member of the
+<structfield>fmt</structfield> union. In case of video capture devices
+that is either the &v4l2-pix-format; <structfield>pix</structfield> or
+the &v4l2-pix-format-mplane; <structfield>pix_mp</structfield> member.
+When the requested buffer type is not supported drivers return an
+&EINVAL;.</para>
+
+ <para>To change the current format parameters applications
+initialize the <structfield>type</structfield> field and all
+fields of the respective <structfield>fmt</structfield>
+union member. For details see the documentation of the various devices
+types in <xref linkend="devices" />. Good practice is to query the
+current parameters first, and to
+modify only those parameters not suitable for the application. When
+the application calls the <constant>VIDIOC_S_FMT</constant> ioctl
+with a pointer to a <structname>v4l2_format</structname> structure
+the driver checks
+and adjusts the parameters against hardware abilities. Drivers
+should not return an error code unless the input is ambiguous, this is
+a mechanism to fathom device capabilities and to approach parameters
+acceptable for both the application and driver. On success the driver
+may program the hardware, allocate resources and generally prepare for
+data exchange.
+Finally the <constant>VIDIOC_S_FMT</constant> ioctl returns the
+current format parameters as <constant>VIDIOC_G_FMT</constant> does.
+Very simple, inflexible devices may even ignore all input and always
+return the default parameters. However all V4L2 devices exchanging
+data with the application must implement the
+<constant>VIDIOC_G_FMT</constant> and
+<constant>VIDIOC_S_FMT</constant> ioctl. When the requested buffer
+type is not supported drivers return an &EINVAL; on a
+<constant>VIDIOC_S_FMT</constant> attempt. When I/O is already in
+progress or the resource is not available for other reasons drivers
+return the &EBUSY;.</para>
+
+ <para>The <constant>VIDIOC_TRY_FMT</constant> ioctl is equivalent
+to <constant>VIDIOC_S_FMT</constant> with one exception: it does not
+change driver state. It can also be called at any time, never
+returning <errorcode>EBUSY</errorcode>. This function is provided to
+negotiate parameters, to learn about hardware limitations, without
+disabling I/O or possibly time consuming hardware preparations.
+Although strongly recommended drivers are not required to implement
+this ioctl.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-format">
+ <title>struct <structname>v4l2_format</structname></title>
+ <tgroup cols="4">
+ <colspec colname="c1" />
+ <colspec colname="c2" />
+ <colspec colname="c3" />
+ <colspec colname="c4" />
+ <tbody valign="top">
+ <row>
+ <entry>&v4l2-buf-type;</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry></entry>
+ <entry>Type of the data stream, see <xref
+ linkend="v4l2-buf-type" />.</entry>
+ </row>
+ <row>
+ <entry>union</entry>
+ <entry><structfield>fmt</structfield></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-pix-format;</entry>
+ <entry><structfield>pix</structfield></entry>
+ <entry>Definition of an image format, see <xref
+ linkend="pixfmt" />, used by video capture and output
+devices.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-pix-format-mplane;</entry>
+ <entry><structfield>pix_mp</structfield></entry>
+ <entry>Definition of an image format, see <xref
+ linkend="pixfmt" />, used by video capture and output
+devices that support the <link linkend="planar-apis">multi-planar
+version of the API</link>.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-window;</entry>
+ <entry><structfield>win</structfield></entry>
+ <entry>Definition of an overlaid image, see <xref
+ linkend="overlay" />, used by video overlay devices.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-vbi-format;</entry>
+ <entry><structfield>vbi</structfield></entry>
+ <entry>Raw VBI capture or output parameters. This is
+discussed in more detail in <xref linkend="raw-vbi" />. Used by raw VBI
+capture and output devices.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-sliced-vbi-format;</entry>
+ <entry><structfield>sliced</structfield></entry>
+ <entry>Sliced VBI capture or output parameters. See
+<xref linkend="sliced" /> for details. Used by sliced VBI
+capture and output devices.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u8</entry>
+ <entry><structfield>raw_data</structfield>[200]</entry>
+ <entry>Place holder for future extensions and custom
+(driver defined) formats with <structfield>type</structfield>
+<constant>V4L2_BUF_TYPE_PRIVATE</constant> and higher.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The &v4l2-format; <structfield>type</structfield>
+field is invalid, the requested buffer type not supported, or the
+format is not supported with this buffer type.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/v4l/vidioc-g-frequency.xml b/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-g-frequency.xml
rename to Documentation/DocBook/media/v4l/vidioc-g-frequency.xml
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-input.xml b/Documentation/DocBook/media/v4l/vidioc-g-input.xml
new file mode 100644
index 0000000..08ae82f
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-input.xml
@@ -0,0 +1,83 @@
+<refentry id="vidioc-g-input">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_INPUT, VIDIOC_S_INPUT</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_INPUT</refname>
+ <refname>VIDIOC_S_INPUT</refname>
+ <refpurpose>Query or select the current video input</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>int *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_INPUT, VIDIOC_S_INPUT</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the current video input applications call the
+<constant>VIDIOC_G_INPUT</constant> ioctl with a pointer to an integer
+where the driver stores the number of the input, as in the
+&v4l2-input; <structfield>index</structfield> field. This ioctl will
+fail only when there are no video inputs, returning
+<errorcode>EINVAL</errorcode>.</para>
+
+ <para>To select a video input applications store the number of the
+desired input in an integer and call the
+<constant>VIDIOC_S_INPUT</constant> ioctl with a pointer to this
+integer. Side effects are possible. For example inputs may support
+different video standards, so the driver may implicitly switch the
+current standard. It is good practice to select an input before
+querying or negotiating any other parameters.</para>
+
+ <para>Information about video inputs is available using the
+&VIDIOC-ENUMINPUT; ioctl.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The number of the video input is out of bounds.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-jpegcomp.xml b/Documentation/DocBook/media/v4l/vidioc-g-jpegcomp.xml
new file mode 100644
index 0000000..01ea24b
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-jpegcomp.xml
@@ -0,0 +1,163 @@
+<refentry id="vidioc-g-jpegcomp">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_JPEGCOMP, VIDIOC_S_JPEGCOMP</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_JPEGCOMP</refname>
+ <refname>VIDIOC_S_JPEGCOMP</refname>
+ <refpurpose></refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>v4l2_jpegcompression *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>const v4l2_jpegcompression *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_JPEGCOMP, VIDIOC_S_JPEGCOMP</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>[to do]</para>
+
+ <para>Ronald Bultje elaborates:</para>
+
+ <!-- See video4linux-list@redhat.com on 16 Oct 2002, subject
+"Re: [V4L] Re: v4l2 api / Zoran v4l2_jpegcompression" -->
+
+ <para>APP is some application-specific information. The
+application can set it itself, and it'll be stored in the JPEG-encoded
+fields (eg; interlacing information for in an AVI or so). COM is the
+same, but it's comments, like 'encoded by me' or so.</para>
+
+ <para>jpeg_markers describes whether the huffman tables,
+quantization tables and the restart interval information (all
+JPEG-specific stuff) should be stored in the JPEG-encoded fields.
+These define how the JPEG field is encoded. If you omit them,
+applications assume you've used standard encoding. You usually do want
+to add them.</para>
+
+ <!-- NB VIDIOC_S_JPEGCOMP is w/o. -->
+
+ <table pgwide="1" frame="none" id="v4l2-jpegcompression">
+ <title>struct <structname>v4l2_jpegcompression</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>int</entry>
+ <entry><structfield>quality</structfield></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry>int</entry>
+ <entry><structfield>APPn</structfield></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry>int</entry>
+ <entry><structfield>APP_len</structfield></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry>char</entry>
+ <entry><structfield>APP_data</structfield>[60]</entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry>int</entry>
+ <entry><structfield>COM_len</structfield></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry>char</entry>
+ <entry><structfield>COM_data</structfield>[60]</entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>jpeg_markers</structfield></entry>
+ <entry>See <xref linkend="jpeg-markers" />.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="jpeg-markers">
+ <title>JPEG Markers Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_JPEG_MARKER_DHT</constant></entry>
+ <entry>(1<<3)</entry>
+ <entry>Define Huffman Tables</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_JPEG_MARKER_DQT</constant></entry>
+ <entry>(1<<4)</entry>
+ <entry>Define Quantization Tables</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_JPEG_MARKER_DRI</constant></entry>
+ <entry>(1<<5)</entry>
+ <entry>Define Restart Interval</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_JPEG_MARKER_COM</constant></entry>
+ <entry>(1<<6)</entry>
+ <entry>Comment segment</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_JPEG_MARKER_APP</constant></entry>
+ <entry>(1<<7)</entry>
+ <entry>App segment, driver will always use APP0</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/v4l/vidioc-g-modulator.xml b/Documentation/DocBook/media/v4l/vidioc-g-modulator.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-g-modulator.xml
rename to Documentation/DocBook/media/v4l/vidioc-g-modulator.xml
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-output.xml b/Documentation/DocBook/media/v4l/vidioc-g-output.xml
new file mode 100644
index 0000000..fd45f1c
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-output.xml
@@ -0,0 +1,84 @@
+<refentry id="vidioc-g-output">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_OUTPUT, VIDIOC_S_OUTPUT</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_OUTPUT</refname>
+ <refname>VIDIOC_S_OUTPUT</refname>
+ <refpurpose>Query or select the current video output</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>int *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_OUTPUT, VIDIOC_S_OUTPUT</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the current video output applications call the
+<constant>VIDIOC_G_OUTPUT</constant> ioctl with a pointer to an integer
+where the driver stores the number of the output, as in the
+&v4l2-output; <structfield>index</structfield> field. This ioctl
+will fail only when there are no video outputs, returning the
+&EINVAL;.</para>
+
+ <para>To select a video output applications store the number of the
+desired output in an integer and call the
+<constant>VIDIOC_S_OUTPUT</constant> ioctl with a pointer to this integer.
+Side effects are possible. For example outputs may support different
+video standards, so the driver may implicitly switch the current
+standard. It is good practice to select an output before querying or
+negotiating any other parameters.</para>
+
+ <para>Information about video outputs is available using the
+&VIDIOC-ENUMOUTPUT; ioctl.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The number of the video output is out of bounds, or
+there are no video outputs at all.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-parm.xml b/Documentation/DocBook/media/v4l/vidioc-g-parm.xml
new file mode 100644
index 0000000..19b1d85
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-parm.xml
@@ -0,0 +1,315 @@
+<refentry id="vidioc-g-parm">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_PARM, VIDIOC_S_PARM</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_PARM</refname>
+ <refname>VIDIOC_S_PARM</refname>
+ <refpurpose>Get or set streaming parameters</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>v4l2_streamparm *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_PARM, VIDIOC_S_PARM</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>The current video standard determines a nominal number of
+frames per second. If less than this number of frames is to be
+captured or output, applications can request frame skipping or
+duplicating on the driver side. This is especially useful when using
+the <function>read()</function> or <function>write()</function>, which
+are not augmented by timestamps or sequence counters, and to avoid
+unnecessary data copying.</para>
+
+ <para>Further these ioctls can be used to determine the number of
+buffers used internally by a driver in read/write mode. For
+implications see the section discussing the &func-read;
+function.</para>
+
+ <para>To get and set the streaming parameters applications call
+the <constant>VIDIOC_G_PARM</constant> and
+<constant>VIDIOC_S_PARM</constant> ioctl, respectively. They take a
+pointer to a struct <structname>v4l2_streamparm</structname> which
+contains a union holding separate parameters for input and output
+devices.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-streamparm">
+ <title>struct <structname>v4l2_streamparm</structname></title>
+ <tgroup cols="4">
+ &cs-ustr;
+ <tbody valign="top">
+ <row>
+ <entry>&v4l2-buf-type;</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry></entry>
+ <entry>The buffer (stream) type, same as &v4l2-format;
+<structfield>type</structfield>, set by the application.</entry>
+ </row>
+ <row>
+ <entry>union</entry>
+ <entry><structfield>parm</structfield></entry>
+ <entry></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-captureparm;</entry>
+ <entry><structfield>capture</structfield></entry>
+ <entry>Parameters for capture devices, used when
+<structfield>type</structfield> is
+<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-outputparm;</entry>
+ <entry><structfield>output</structfield></entry>
+ <entry>Parameters for output devices, used when
+<structfield>type</structfield> is
+<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u8</entry>
+ <entry><structfield>raw_data</structfield>[200]</entry>
+ <entry>A place holder for future extensions and custom
+(driver defined) buffer types <constant>V4L2_BUF_TYPE_PRIVATE</constant> and
+higher.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-captureparm">
+ <title>struct <structname>v4l2_captureparm</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>capability</structfield></entry>
+ <entry>See <xref linkend="parm-caps" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>capturemode</structfield></entry>
+ <entry>Set by drivers and applications, see <xref linkend="parm-flags" />.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-fract;</entry>
+ <entry><structfield>timeperframe</structfield></entry>
+ <entry><para>This is is the desired period between
+successive frames captured by the driver, in seconds. The
+field is intended to skip frames on the driver side, saving I/O
+bandwidth.</para><para>Applications store here the desired frame
+period, drivers return the actual frame period, which must be greater
+or equal to the nominal frame period determined by the current video
+standard (&v4l2-standard; <structfield>frameperiod</structfield>
+field). Changing the video standard (also implicitly by switching the
+video input) may reset this parameter to the nominal frame period. To
+reset manually applications can just set this field to
+zero.</para><para>Drivers support this function only when they set the
+<constant>V4L2_CAP_TIMEPERFRAME</constant> flag in the
+<structfield>capability</structfield> field.</para></entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>extendedmode</structfield></entry>
+ <entry>Custom (driver specific) streaming parameters. When
+unused, applications and drivers must set this field to zero.
+Applications using this field should check the driver name and
+version, see <xref linkend="querycap" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>readbuffers</structfield></entry>
+ <entry>Applications set this field to the desired number
+of buffers used internally by the driver in &func-read; mode. Drivers
+return the actual number of buffers. When an application requests zero
+buffers, drivers should just return the current setting rather than
+the minimum or an error code. For details see <xref
+ linkend="rw" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[4]</entry>
+ <entry>Reserved for future extensions. Drivers and
+applications must set the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-outputparm">
+ <title>struct <structname>v4l2_outputparm</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>capability</structfield></entry>
+ <entry>See <xref linkend="parm-caps" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>outputmode</structfield></entry>
+ <entry>Set by drivers and applications, see <xref
+ linkend="parm-flags" />.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-fract;</entry>
+ <entry><structfield>timeperframe</structfield></entry>
+ <entry>This is is the desired period between
+successive frames output by the driver, in seconds.</entry>
+ </row>
+ <row>
+ <entry spanname="hspan"><para>The field is intended to
+repeat frames on the driver side in &func-write; mode (in streaming
+mode timestamps can be used to throttle the output), saving I/O
+bandwidth.</para><para>Applications store here the desired frame
+period, drivers return the actual frame period, which must be greater
+or equal to the nominal frame period determined by the current video
+standard (&v4l2-standard; <structfield>frameperiod</structfield>
+field). Changing the video standard (also implicitly by switching the
+video output) may reset this parameter to the nominal frame period. To
+reset manually applications can just set this field to
+zero.</para><para>Drivers support this function only when they set the
+<constant>V4L2_CAP_TIMEPERFRAME</constant> flag in the
+<structfield>capability</structfield> field.</para></entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>extendedmode</structfield></entry>
+ <entry>Custom (driver specific) streaming parameters. When
+unused, applications and drivers must set this field to zero.
+Applications using this field should check the driver name and
+version, see <xref linkend="querycap" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>writebuffers</structfield></entry>
+ <entry>Applications set this field to the desired number
+of buffers used internally by the driver in
+<function>write()</function> mode. Drivers return the actual number of
+buffers. When an application requests zero buffers, drivers should
+just return the current setting rather than the minimum or an error
+code. For details see <xref linkend="rw" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[4]</entry>
+ <entry>Reserved for future extensions. Drivers and
+applications must set the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="parm-caps">
+ <title>Streaming Parameters Capabilites</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_CAP_TIMEPERFRAME</constant></entry>
+ <entry>0x1000</entry>
+ <entry>The frame skipping/repeating controlled by the
+<structfield>timeperframe</structfield> field is supported.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="parm-flags">
+ <title>Capture Parameters Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MODE_HIGHQUALITY</constant></entry>
+ <entry>0x0001</entry>
+ <entry><para>High quality imaging mode. High quality mode
+is intended for still imaging applications. The idea is to get the
+best possible image quality that the hardware can deliver. It is not
+defined how the driver writer may achieve that; it will depend on the
+hardware and the ingenuity of the driver writer. High quality mode is
+a different mode from the the regular motion video capture modes. In
+high quality mode:<itemizedlist>
+ <listitem>
+ <para>The driver may be able to capture higher
+resolutions than for motion capture.</para>
+ </listitem>
+ <listitem>
+ <para>The driver may support fewer pixel formats
+than motion capture (eg; true color).</para>
+ </listitem>
+ <listitem>
+ <para>The driver may capture and arithmetically
+combine multiple successive fields or frames to remove color edge
+artifacts and reduce the noise in the video data.
+</para>
+ </listitem>
+ <listitem>
+ <para>The driver may capture images in slices like
+a scanner in order to handle larger format images than would otherwise
+be possible. </para>
+ </listitem>
+ <listitem>
+ <para>An image capture operation may be
+significantly slower than motion capture. </para>
+ </listitem>
+ <listitem>
+ <para>Moving objects in the image might have
+excessive motion blur. </para>
+ </listitem>
+ <listitem>
+ <para>Capture might only work through the
+<function>read()</function> call.</para>
+ </listitem>
+ </itemizedlist></para></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-priority.xml b/Documentation/DocBook/media/v4l/vidioc-g-priority.xml
new file mode 100644
index 0000000..8f5e3da
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-priority.xml
@@ -0,0 +1,143 @@
+<refentry id="vidioc-g-priority">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_PRIORITY, VIDIOC_S_PRIORITY</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_PRIORITY</refname>
+ <refname>VIDIOC_S_PRIORITY</refname>
+ <refpurpose>Query or request the access priority associated with a
+file descriptor</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>enum v4l2_priority *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>const enum v4l2_priority *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_PRIORITY, VIDIOC_S_PRIORITY</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para>Pointer to an enum v4l2_priority type.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the current access priority
+applications call the <constant>VIDIOC_G_PRIORITY</constant> ioctl
+with a pointer to an enum v4l2_priority variable where the driver stores
+the current priority.</para>
+
+ <para>To request an access priority applications store the
+desired priority in an enum v4l2_priority variable and call
+<constant>VIDIOC_S_PRIORITY</constant> ioctl with a pointer to this
+variable.</para>
+
+ <table frame="none" pgwide="1" id="v4l2-priority">
+ <title>enum v4l2_priority</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_PRIORITY_UNSET</constant></entry>
+ <entry>0</entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_PRIORITY_BACKGROUND</constant></entry>
+ <entry>1</entry>
+ <entry>Lowest priority, usually applications running in
+background, for example monitoring VBI transmissions. A proxy
+application running in user space will be necessary if multiple
+applications want to read from a device at this priority.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_PRIORITY_INTERACTIVE</constant></entry>
+ <entry>2</entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_PRIORITY_DEFAULT</constant></entry>
+ <entry>2</entry>
+ <entry>Medium priority, usually applications started and
+interactively controlled by the user. For example TV viewers, Teletext
+browsers, or just "panel" applications to change the channel or video
+controls. This is the default priority unless an application requests
+another.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_PRIORITY_RECORD</constant></entry>
+ <entry>3</entry>
+ <entry>Highest priority. Only one file descriptor can have
+this priority, it blocks any other fd from changing device properties.
+Usually applications which must not be interrupted, like video
+recording.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The requested priority value is invalid.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EBUSY</errorcode></term>
+ <listitem>
+ <para>Another application already requested higher
+priority.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
+
+<!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "v4l2.sgml"
+indent-tabs-mode: nil
+End:
+-->
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-sliced-vbi-cap.xml b/Documentation/DocBook/media/v4l/vidioc-g-sliced-vbi-cap.xml
new file mode 100644
index 0000000..71741da
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-sliced-vbi-cap.xml
@@ -0,0 +1,255 @@
+<refentry id="vidioc-g-sliced-vbi-cap">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_SLICED_VBI_CAP</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_SLICED_VBI_CAP</refname>
+ <refpurpose>Query sliced VBI capabilities</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_sliced_vbi_cap *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_SLICED_VBI_CAP</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To find out which data services are supported by a sliced
+VBI capture or output device, applications initialize the
+<structfield>type</structfield> field of a &v4l2-sliced-vbi-cap;,
+clear the <structfield>reserved</structfield> array and
+call the <constant>VIDIOC_G_SLICED_VBI_CAP</constant> ioctl. The
+driver fills in the remaining fields or returns an &EINVAL; if the
+sliced VBI API is unsupported or <structfield>type</structfield>
+is invalid.</para>
+
+ <para>Note the <structfield>type</structfield> field was added,
+and the ioctl changed from read-only to write-read, in Linux 2.6.19.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-sliced-vbi-cap">
+ <title>struct <structname>v4l2_sliced_vbi_cap</structname></title>
+ <tgroup cols="5">
+ <colspec colname="c1" colwidth="3*" />
+ <colspec colname="c2" colwidth="3*" />
+ <colspec colname="c3" colwidth="2*" />
+ <colspec colname="c4" colwidth="2*" />
+ <colspec colname="c5" colwidth="2*" />
+ <spanspec spanname="hspan" namest="c3" nameend="c5" />
+ <tbody valign="top">
+ <row>
+ <entry>__u16</entry>
+ <entry><structfield>service_set</structfield></entry>
+ <entry spanname="hspan">A set of all data services
+supported by the driver. Equal to the union of all elements of the
+<structfield>service_lines </structfield> array.</entry>
+ </row>
+ <row>
+ <entry>__u16</entry>
+ <entry><structfield>service_lines</structfield>[2][24]</entry>
+ <entry spanname="hspan">Each element of this array
+contains a set of data services the hardware can look for or insert
+into a particular scan line. Data services are defined in <xref
+ linkend="vbi-services" />. Array indices map to ITU-R
+line numbers (see also <xref
+ linkend="vbi-525" /> and <xref
+linkend="vbi-625" />) as follows:</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry>Element</entry>
+ <entry>525 line systems</entry>
+ <entry>625 line systems</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry><structfield>service_lines</structfield>[0][1]</entry>
+ <entry align="center">1</entry>
+ <entry align="center">1</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry><structfield>service_lines</structfield>[0][23]</entry>
+ <entry align="center">23</entry>
+ <entry align="center">23</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry><structfield>service_lines</structfield>[1][1]</entry>
+ <entry align="center">264</entry>
+ <entry align="center">314</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry><structfield>service_lines</structfield>[1][23]</entry>
+ <entry align="center">286</entry>
+ <entry align="center">336</entry>
+ </row>
+ <row>
+ <entry></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry spanname="hspan">The number of VBI lines the
+hardware can capture or output per frame, or the number of services it
+can identify on a given line may be limited. For example on PAL line
+16 the hardware may be able to look for a VPS or Teletext signal, but
+not both at the same time. Applications can learn about these limits
+using the &VIDIOC-S-FMT; ioctl as described in <xref
+ linkend="sliced" />.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry spanname="hspan">Drivers must set
+<structfield>service_lines</structfield>[0][0] and
+<structfield>service_lines</structfield>[1][0] to zero.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-buf-type;</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry>Type of the data stream, see <xref
+ linkend="v4l2-buf-type" />. Should be
+<constant>V4L2_BUF_TYPE_SLICED_VBI_CAPTURE</constant> or
+<constant>V4L2_BUF_TYPE_SLICED_VBI_OUTPUT</constant>.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[3]</entry>
+ <entry spanname="hspan">This array is reserved for future
+extensions. Applications and drivers must set it to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <!-- See also dev-sliced-vbi.sgml -->
+ <table pgwide="1" frame="none" id="vbi-services">
+ <title>Sliced VBI services</title>
+ <tgroup cols="5">
+ <colspec colname="c1" colwidth="2*" />
+ <colspec colname="c2" colwidth="1*" />
+ <colspec colname="c3" colwidth="1*" />
+ <colspec colname="c4" colwidth="2*" />
+ <colspec colname="c5" colwidth="2*" />
+ <spanspec spanname='rlp' namest='c3' nameend='c5' />
+ <thead>
+ <row>
+ <entry>Symbol</entry>
+ <entry>Value</entry>
+ <entry>Reference</entry>
+ <entry>Lines, usually</entry>
+ <entry>Payload</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_SLICED_TELETEXT_B</constant> (Teletext
+System B)</entry>
+ <entry>0x0001</entry>
+ <entry><xref linkend="ets300706" />, <xref linkend="itu653" /></entry>
+ <entry>PAL/SECAM line 7-22, 320-335 (second field 7-22)</entry>
+ <entry>Last 42 of the 45 byte Teletext packet, that is
+without clock run-in and framing code, lsb first transmitted.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SLICED_VPS</constant></entry>
+ <entry>0x0400</entry>
+ <entry><xref linkend="ets300231" /></entry>
+ <entry>PAL line 16</entry>
+ <entry>Byte number 3 to 15 according to Figure 9 of
+ETS 300 231, lsb first transmitted.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SLICED_CAPTION_525</constant></entry>
+ <entry>0x1000</entry>
+ <entry><xref linkend="eia608" /></entry>
+ <entry>NTSC line 21, 284 (second field 21)</entry>
+ <entry>Two bytes in transmission order, including parity
+bit, lsb first transmitted.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SLICED_WSS_625</constant></entry>
+ <entry>0x4000</entry>
+ <entry><xref linkend="en300294" />, <xref linkend="itu1119" /></entry>
+ <entry>PAL/SECAM line 23</entry>
+ <entry><screen>
+Byte 0 1
+ msb lsb msb lsb
+Bit 7 6 5 4 3 2 1 0 x x 13 12 11 10 9
+</screen></entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SLICED_VBI_525</constant></entry>
+ <entry>0x1000</entry>
+ <entry spanname="rlp">Set of services applicable to 525
+line systems.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SLICED_VBI_625</constant></entry>
+ <entry>0x4401</entry>
+ <entry spanname="rlp">Set of services applicable to 625
+line systems.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The value in the <structfield>type</structfield> field is
+wrong.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-std.xml b/Documentation/DocBook/media/v4l/vidioc-g-std.xml
new file mode 100644
index 0000000..37996f2
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-g-std.xml
@@ -0,0 +1,98 @@
+<refentry id="vidioc-g-std">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_G_STD, VIDIOC_S_STD</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_G_STD</refname>
+ <refname>VIDIOC_S_STD</refname>
+ <refpurpose>Query or select the video standard of the current input</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>v4l2_std_id
+*<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>const v4l2_std_id
+*<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_G_STD, VIDIOC_S_STD</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query and select the current video standard applications
+use the <constant>VIDIOC_G_STD</constant> and <constant>VIDIOC_S_STD</constant> ioctls which take a pointer to a
+&v4l2-std-id; type as argument. <constant>VIDIOC_G_STD</constant> can
+return a single flag or a set of flags as in &v4l2-standard; field
+<structfield>id</structfield>. The flags must be unambiguous such
+that they appear in only one enumerated <structname>v4l2_standard</structname> structure.</para>
+
+ <para><constant>VIDIOC_S_STD</constant> accepts one or more
+flags, being a write-only ioctl it does not return the actual new standard as
+<constant>VIDIOC_G_STD</constant> does. When no flags are given or
+the current input does not support the requested standard the driver
+returns an &EINVAL;. When the standard set is ambiguous drivers may
+return <errorcode>EINVAL</errorcode> or choose any of the requested
+standards.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The <constant>VIDIOC_S_STD</constant> parameter was unsuitable.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
+
+<!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "v4l2.sgml"
+indent-tabs-mode: nil
+End:
+-->
diff --git a/Documentation/DocBook/v4l/vidioc-g-tuner.xml b/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-g-tuner.xml
rename to Documentation/DocBook/media/v4l/vidioc-g-tuner.xml
diff --git a/Documentation/DocBook/media/v4l/vidioc-log-status.xml b/Documentation/DocBook/media/v4l/vidioc-log-status.xml
new file mode 100644
index 0000000..5ded7d3
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-log-status.xml
@@ -0,0 +1,41 @@
+<refentry id="vidioc-log-status">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_LOG_STATUS</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_LOG_STATUS</refname>
+ <refpurpose>Log driver status information</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>As the video/audio devices become more complicated it
+becomes harder to debug problems. When this ioctl is called the driver
+will output the current device status to the kernel log. This is
+particular useful when dealing with problems like no sound, no video
+and incorrectly tuned channels. Also many modern devices autodetect
+video and audio standards and this ioctl will report what the device
+thinks what the standard is. Mismatches may give an indication where
+the problem is.</para>
+
+ <para>This ioctl is optional and not all drivers support it. It
+was introduced in Linux 2.6.15.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-overlay.xml b/Documentation/DocBook/media/v4l/vidioc-overlay.xml
new file mode 100644
index 0000000..250a7de
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-overlay.xml
@@ -0,0 +1,74 @@
+<refentry id="vidioc-overlay">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_OVERLAY</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_OVERLAY</refname>
+ <refpurpose>Start or stop video overlay</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>const int *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_OVERLAY</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>This ioctl is part of the <link linkend="overlay">video
+ overlay</link> I/O method. Applications call
+ <constant>VIDIOC_OVERLAY</constant> to start or stop the
+ overlay. It takes a pointer to an integer which must be set to
+ zero by the application to stop overlay, to one to start.</para>
+
+ <para>Drivers do not support &VIDIOC-STREAMON; or
+&VIDIOC-STREAMOFF; with <constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The overlay parameters have not been set up. See <xref
+linkend="overlay" /> for the necessary steps.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-prepare-buf.xml b/Documentation/DocBook/media/v4l/vidioc-prepare-buf.xml
new file mode 100644
index 0000000..7bde698
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-prepare-buf.xml
@@ -0,0 +1,88 @@
+<refentry id="vidioc-prepare-buf">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_PREPARE_BUF</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_PREPARE_BUF</refname>
+ <refpurpose>Prepare a buffer for I/O</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_buffer *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_PREPARE_BUF</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>Applications can optionally call the
+<constant>VIDIOC_PREPARE_BUF</constant> ioctl to pass ownership of the buffer
+to the driver before actually enqueuing it, using the
+<constant>VIDIOC_QBUF</constant> ioctl, and to prepare it for future I/O.
+Such preparations may include cache invalidation or cleaning. Performing them
+in advance saves time during the actual I/O. In case such cache operations are
+not required, the application can use one of
+<constant>V4L2_BUF_FLAG_NO_CACHE_INVALIDATE</constant> and
+<constant>V4L2_BUF_FLAG_NO_CACHE_CLEAN</constant> flags to skip the respective
+step.</para>
+
+ <para>The <structname>v4l2_buffer</structname> structure is
+specified in <xref linkend="buffer" />.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EBUSY</errorcode></term>
+ <listitem>
+ <para>File I/O is in progress.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The buffer <structfield>type</structfield> is not
+supported, or the <structfield>index</structfield> is out of bounds,
+or no buffers have been allocated yet, or the
+<structfield>userptr</structfield> or
+<structfield>length</structfield> are invalid.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-qbuf.xml b/Documentation/DocBook/media/v4l/vidioc-qbuf.xml
new file mode 100644
index 0000000..9caa49a
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-qbuf.xml
@@ -0,0 +1,177 @@
+<refentry id="vidioc-qbuf">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_QBUF, VIDIOC_DQBUF</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_QBUF</refname>
+ <refname>VIDIOC_DQBUF</refname>
+ <refpurpose>Exchange a buffer with the driver</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_buffer *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_QBUF, VIDIOC_DQBUF</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>Applications call the <constant>VIDIOC_QBUF</constant> ioctl
+to enqueue an empty (capturing) or filled (output) buffer in the
+driver's incoming queue. The semantics depend on the selected I/O
+method.</para>
+
+ <para>To enqueue a buffer applications set the <structfield>type</structfield>
+field of a &v4l2-buffer; to the same buffer type as was previously used
+with &v4l2-format; <structfield>type</structfield> and &v4l2-requestbuffers;
+<structfield>type</structfield>. Applications must also set the
+<structfield>index</structfield> field. Valid index numbers range from
+zero to the number of buffers allocated with &VIDIOC-REQBUFS;
+(&v4l2-requestbuffers; <structfield>count</structfield>) minus one. The
+contents of the struct <structname>v4l2_buffer</structname> returned
+by a &VIDIOC-QUERYBUF; ioctl will do as well. When the buffer is
+intended for output (<structfield>type</structfield> is
+<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>,
+<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant>, or
+<constant>V4L2_BUF_TYPE_VBI_OUTPUT</constant>) applications must also
+initialize the <structfield>bytesused</structfield>,
+<structfield>field</structfield> and
+<structfield>timestamp</structfield> fields, see <xref
+linkend="buffer" /> for details.
+Applications must also set <structfield>flags</structfield> to 0. If a driver
+supports capturing from specific video inputs and you want to specify a video
+input, then <structfield>flags</structfield> should be set to
+<constant>V4L2_BUF_FLAG_INPUT</constant> and the field
+<structfield>input</structfield> must be initialized to the desired input.
+The <structfield>reserved</structfield> field must be set to 0. When using
+the <link linkend="planar-apis">multi-planar API</link>, the
+<structfield>m.planes</structfield> field must contain a userspace pointer
+to a filled-in array of &v4l2-plane; and the <structfield>length</structfield>
+field must be set to the number of elements in that array.
+</para>
+
+ <para>To enqueue a <link linkend="mmap">memory mapped</link>
+buffer applications set the <structfield>memory</structfield>
+field to <constant>V4L2_MEMORY_MMAP</constant>. When
+<constant>VIDIOC_QBUF</constant> is called with a pointer to this
+structure the driver sets the
+<constant>V4L2_BUF_FLAG_MAPPED</constant> and
+<constant>V4L2_BUF_FLAG_QUEUED</constant> flags and clears the
+<constant>V4L2_BUF_FLAG_DONE</constant> flag in the
+<structfield>flags</structfield> field, or it returns an
+&EINVAL;.</para>
+
+ <para>To enqueue a <link linkend="userp">user pointer</link>
+buffer applications set the <structfield>memory</structfield>
+field to <constant>V4L2_MEMORY_USERPTR</constant>, the
+<structfield>m.userptr</structfield> field to the address of the
+buffer and <structfield>length</structfield> to its size. When the multi-planar
+API is used, <structfield>m.userptr</structfield> and
+<structfield>length</structfield> members of the passed array of &v4l2-plane;
+have to be used instead. When <constant>VIDIOC_QBUF</constant> is called with
+a pointer to this structure the driver sets the
+<constant>V4L2_BUF_FLAG_QUEUED</constant> flag and clears the
+<constant>V4L2_BUF_FLAG_MAPPED</constant> and
+<constant>V4L2_BUF_FLAG_DONE</constant> flags in the
+<structfield>flags</structfield> field, or it returns an error code.
+This ioctl locks the memory pages of the buffer in physical memory,
+they cannot be swapped out to disk. Buffers remain locked until
+dequeued, until the &VIDIOC-STREAMOFF; or &VIDIOC-REQBUFS; ioctl is
+called, or until the device is closed.</para>
+
+ <para>Applications call the <constant>VIDIOC_DQBUF</constant>
+ioctl to dequeue a filled (capturing) or displayed (output) buffer
+from the driver's outgoing queue. They just set the
+<structfield>type</structfield>, <structfield>memory</structfield>
+and <structfield>reserved</structfield>
+fields of a &v4l2-buffer; as above, when <constant>VIDIOC_DQBUF</constant>
+is called with a pointer to this structure the driver fills the
+remaining fields or returns an error code. The driver may also set
+<constant>V4L2_BUF_FLAG_ERROR</constant> in the <structfield>flags</structfield>
+field. It indicates a non-critical (recoverable) streaming error. In such case
+the application may continue as normal, but should be aware that data in the
+dequeued buffer might be corrupted. When using the multi-planar API, the
+planes array does not have to be passed; the <structfield>m.planes</structfield>
+member must be set to NULL in that case.</para>
+
+ <para>By default <constant>VIDIOC_DQBUF</constant> blocks when no
+buffer is in the outgoing queue. When the
+<constant>O_NONBLOCK</constant> flag was given to the &func-open;
+function, <constant>VIDIOC_DQBUF</constant> returns immediately
+with an &EAGAIN; when no buffer is available.</para>
+
+ <para>The <structname>v4l2_buffer</structname> structure is
+specified in <xref linkend="buffer" />.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EAGAIN</errorcode></term>
+ <listitem>
+ <para>Non-blocking I/O has been selected using
+<constant>O_NONBLOCK</constant> and no buffer was in the outgoing
+queue.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The buffer <structfield>type</structfield> is not
+supported, or the <structfield>index</structfield> is out of bounds,
+or no buffers have been allocated yet, or the
+<structfield>userptr</structfield> or
+<structfield>length</structfield> are invalid.</para>
+ </listitem>
+ <term><errorcode>EIO</errorcode></term>
+ <listitem>
+ <para><constant>VIDIOC_DQBUF</constant> failed due to an
+internal error. Can also indicate temporary problems like signal
+loss. Note the driver might dequeue an (empty) buffer despite
+returning an error, or even stop capturing. Reusing such buffer may be unsafe
+though and its details (e.g. <structfield>index</structfield>) may not be
+returned either. It is recommended that drivers indicate recoverable errors
+by setting the <constant>V4L2_BUF_FLAG_ERROR</constant> and returning 0 instead.
+In that case the application should be able to safely reuse the buffer and
+continue streaming.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml b/Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml
new file mode 100644
index 0000000..23b17f6
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml
@@ -0,0 +1,65 @@
+<refentry id="vidioc-query-dv-preset">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_QUERY_DV_PRESET</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_QUERY_DV_PRESET</refname>
+ <refpurpose>Sense the DV preset received by the current
+input</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_dv_preset *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_QUERY_DV_PRESET</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>The hardware may be able to detect the current DV preset
+automatically, similar to sensing the video standard. To do so, applications
+call <constant> VIDIOC_QUERY_DV_PRESET</constant> with a pointer to a
+&v4l2-dv-preset; type. Once the hardware detects a preset, that preset is
+returned in the preset field of &v4l2-dv-preset;. If the preset could not be
+detected because there was no signal, or the signal was unreliable, or the
+signal did not map to a supported preset, then the value V4L2_DV_INVALID is
+returned.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/v4l/vidioc-querybuf.xml b/Documentation/DocBook/media/v4l/vidioc-querybuf.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-querybuf.xml
rename to Documentation/DocBook/media/v4l/vidioc-querybuf.xml
diff --git a/Documentation/DocBook/media/v4l/vidioc-querycap.xml b/Documentation/DocBook/media/v4l/vidioc-querycap.xml
new file mode 100644
index 0000000..e3664d6
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-querycap.xml
@@ -0,0 +1,287 @@
+<refentry id="vidioc-querycap">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_QUERYCAP</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_QUERYCAP</refname>
+ <refpurpose>Query device capabilities</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_capability *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_QUERYCAP</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>All V4L2 devices support the
+<constant>VIDIOC_QUERYCAP</constant> ioctl. It is used to identify
+kernel devices compatible with this specification and to obtain
+information about driver and hardware capabilities. The ioctl takes a
+pointer to a &v4l2-capability; which is filled by the driver. When the
+driver is not compatible with this specification the ioctl returns an
+&EINVAL;.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-capability">
+ <title>struct <structname>v4l2_capability</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>driver</structfield>[16]</entry>
+ <entry><para>Name of the driver, a unique NUL-terminated
+ASCII string. For example: "bttv". Driver specific applications can
+use this information to verify the driver identity. It is also useful
+to work around known bugs, or to identify drivers in error reports.</para>
+<para>Storing strings in fixed sized arrays is bad
+practice but unavoidable here. Drivers and applications should take
+precautions to never read or write beyond the end of the array and to
+make sure the strings are properly NUL-terminated.</para></entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>card</structfield>[32]</entry>
+ <entry>Name of the device, a NUL-terminated ASCII string.
+For example: "Yoyodyne TV/FM". One driver may support different brands
+or models of video hardware. This information is intended for users,
+for example in a menu of available devices. Since multiple TV cards of
+the same brand may be installed which are supported by the same
+driver, this name should be combined with the character device file
+name (⪚ <filename>/dev/video2</filename>) or the
+<structfield>bus_info</structfield> string to avoid
+ambiguities.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>bus_info</structfield>[32]</entry>
+ <entry>Location of the device in the system, a
+NUL-terminated ASCII string. For example: "PCI Slot 4". This
+information is intended for users, to distinguish multiple
+identical devices. If no such information is available the field may
+simply count the devices controlled by the driver, or contain the
+empty string (<structfield>bus_info</structfield>[0] = 0).<!-- XXX pci_dev->slot_name example --></entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>version</structfield></entry>
+ <entry><para>Version number of the driver.</para>
+<para>Starting on kernel 3.1, the version reported is provided per
+V4L2 subsystem, following the same Kernel numberation scheme. However, it
+should not always return the same version as the kernel, if, for example,
+an stable or distribution-modified kernel uses the V4L2 stack from a
+newer kernel.</para>
+<para>The version number is formatted using the
+<constant>KERNEL_VERSION()</constant> macro:</para></entry>
+ </row>
+ <row>
+ <entry spanname="hspan"><para>
+<programlisting>
+#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
+
+__u32 version = KERNEL_VERSION(0, 8, 1);
+
+printf ("Version: %u.%u.%u\n",
+ (version >> 16) & 0xFF,
+ (version >> 8) & 0xFF,
+ version & 0xFF);
+</programlisting></para></entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>capabilities</structfield></entry>
+ <entry>Device capabilities, see <xref
+ linkend="device-capabilities" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[4]</entry>
+ <entry>Reserved for future extensions. Drivers must set
+this array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="device-capabilities">
+ <title>Device Capabilities Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_CAP_VIDEO_CAPTURE</constant></entry>
+ <entry>0x00000001</entry>
+ <entry>The device supports the single-planar API through the <link
+linkend="capture">Video Capture</link> interface.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_VIDEO_CAPTURE_MPLANE</constant></entry>
+ <entry>0x00001000</entry>
+ <entry>The device supports the
+ <link linkend="planar-apis">multi-planar API</link> through the
+ <link linkend="capture">Video Capture</link> interface.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_VIDEO_OUTPUT</constant></entry>
+ <entry>0x00000002</entry>
+ <entry>The device supports the single-planar API through the <link
+linkend="output">Video Output</link> interface.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_VIDEO_OUTPUT_MPLANE</constant></entry>
+ <entry>0x00002000</entry>
+ <entry>The device supports the
+ <link linkend="planar-apis">multi-planar API</link> through the
+ <link linkend="output">Video Output</link> interface.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_VIDEO_OVERLAY</constant></entry>
+ <entry>0x00000004</entry>
+ <entry>The device supports the <link
+linkend="overlay">Video Overlay</link> interface. A video overlay device
+typically stores captured images directly in the video memory of a
+graphics card, with hardware clipping and scaling.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_VBI_CAPTURE</constant></entry>
+ <entry>0x00000010</entry>
+ <entry>The device supports the <link linkend="raw-vbi">Raw
+VBI Capture</link> interface, providing Teletext and Closed Caption
+data.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_VBI_OUTPUT</constant></entry>
+ <entry>0x00000020</entry>
+ <entry>The device supports the <link linkend="raw-vbi">Raw VBI Output</link> interface.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_SLICED_VBI_CAPTURE</constant></entry>
+ <entry>0x00000040</entry>
+ <entry>The device supports the <link linkend="sliced">Sliced VBI Capture</link> interface.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_SLICED_VBI_OUTPUT</constant></entry>
+ <entry>0x00000080</entry>
+ <entry>The device supports the <link linkend="sliced">Sliced VBI Output</link> interface.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_RDS_CAPTURE</constant></entry>
+ <entry>0x00000100</entry>
+ <entry>The device supports the <link linkend="rds">RDS</link> capture interface.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_VIDEO_OUTPUT_OVERLAY</constant></entry>
+ <entry>0x00000200</entry>
+ <entry>The device supports the <link linkend="osd">Video
+Output Overlay</link> (OSD) interface. Unlike the <wordasword>Video
+Overlay</wordasword> interface, this is a secondary function of video
+output devices and overlays an image onto an outgoing video signal.
+When the driver sets this flag, it must clear the
+<constant>V4L2_CAP_VIDEO_OVERLAY</constant> flag and vice
+versa.<footnote><para>The &v4l2-framebuffer; lacks an
+&v4l2-buf-type; field, therefore the type of overlay is implied by the
+driver capabilities.</para></footnote></entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_HW_FREQ_SEEK</constant></entry>
+ <entry>0x00000400</entry>
+ <entry>The device supports the &VIDIOC-S-HW-FREQ-SEEK; ioctl for
+hardware frequency seeking.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_RDS_OUTPUT</constant></entry>
+ <entry>0x00000800</entry>
+ <entry>The device supports the <link linkend="rds">RDS</link> output interface.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_TUNER</constant></entry>
+ <entry>0x00010000</entry>
+ <entry>The device has some sort of tuner to
+receive RF-modulated video signals. For more information about
+tuner programming see
+<xref linkend="tuner" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_AUDIO</constant></entry>
+ <entry>0x00020000</entry>
+ <entry>The device has audio inputs or outputs. It may or
+may not support audio recording or playback, in PCM or compressed
+formats. PCM audio support must be implemented as ALSA or OSS
+interface. For more information on audio inputs and outputs see <xref
+ linkend="audio" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_RADIO</constant></entry>
+ <entry>0x00040000</entry>
+ <entry>This is a radio receiver.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_MODULATOR</constant></entry>
+ <entry>0x00080000</entry>
+ <entry>The device has some sort of modulator to
+emit RF-modulated video/audio signals. For more information about
+modulator programming see
+<xref linkend="tuner" />.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_READWRITE</constant></entry>
+ <entry>0x01000000</entry>
+ <entry>The device supports the <link
+linkend="rw">read()</link> and/or <link linkend="rw">write()</link>
+I/O methods.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_ASYNCIO</constant></entry>
+ <entry>0x02000000</entry>
+ <entry>The device supports the <link
+linkend="async">asynchronous</link> I/O methods.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_STREAMING</constant></entry>
+ <entry>0x04000000</entry>
+ <entry>The device supports the <link
+linkend="mmap">streaming</link> I/O method.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml b/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml
new file mode 100644
index 0000000..0ac0057
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml
@@ -0,0 +1,453 @@
+<refentry id="vidioc-queryctrl">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_QUERYCTRL, VIDIOC_QUERYMENU</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_QUERYCTRL</refname>
+ <refname>VIDIOC_QUERYMENU</refname>
+ <refpurpose>Enumerate controls and menu control items</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_queryctrl *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_querymenu *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_QUERYCTRL, VIDIOC_QUERYMENU</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the attributes of a control applications set the
+<structfield>id</structfield> field of a &v4l2-queryctrl; and call the
+<constant>VIDIOC_QUERYCTRL</constant> ioctl with a pointer to this
+structure. The driver fills the rest of the structure or returns an
+&EINVAL; when the <structfield>id</structfield> is invalid.</para>
+
+ <para>It is possible to enumerate controls by calling
+<constant>VIDIOC_QUERYCTRL</constant> with successive
+<structfield>id</structfield> values starting from
+<constant>V4L2_CID_BASE</constant> up to and exclusive
+<constant>V4L2_CID_BASE_LASTP1</constant>. Drivers may return
+<errorcode>EINVAL</errorcode> if a control in this range is not
+supported. Further applications can enumerate private controls, which
+are not defined in this specification, by starting at
+<constant>V4L2_CID_PRIVATE_BASE</constant> and incrementing
+<structfield>id</structfield> until the driver returns
+<errorcode>EINVAL</errorcode>.</para>
+
+ <para>In both cases, when the driver sets the
+<constant>V4L2_CTRL_FLAG_DISABLED</constant> flag in the
+<structfield>flags</structfield> field this control is permanently
+disabled and should be ignored by the application.<footnote>
+ <para><constant>V4L2_CTRL_FLAG_DISABLED</constant> was
+intended for two purposes: Drivers can skip predefined controls not
+supported by the hardware (although returning EINVAL would do as
+well), or disable predefined and private controls after hardware
+detection without the trouble of reordering control arrays and indices
+(EINVAL cannot be used to skip private controls because it would
+prematurely end the enumeration).</para></footnote></para>
+
+ <para>When the application ORs <structfield>id</structfield> with
+<constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant> the driver returns the
+next supported control, or <errorcode>EINVAL</errorcode> if there is
+none. Drivers which do not support this flag yet always return
+<errorcode>EINVAL</errorcode>.</para>
+
+ <para>Additional information is required for menu controls: the
+names of the menu items. To query them applications set the
+<structfield>id</structfield> and <structfield>index</structfield>
+fields of &v4l2-querymenu; and call the
+<constant>VIDIOC_QUERYMENU</constant> ioctl with a pointer to this
+structure. The driver fills the rest of the structure or returns an
+&EINVAL; when the <structfield>id</structfield> or
+<structfield>index</structfield> is invalid. Menu items are enumerated
+by calling <constant>VIDIOC_QUERYMENU</constant> with successive
+<structfield>index</structfield> values from &v4l2-queryctrl;
+<structfield>minimum</structfield> to
+<structfield>maximum</structfield>, inclusive. Note that it is possible
+for <constant>VIDIOC_QUERYMENU</constant> to return an &EINVAL; for some
+indices between <structfield>minimum</structfield> and <structfield>maximum</structfield>.
+In that case that particular menu item is not supported by this driver. Also note that
+the <structfield>minimum</structfield> value is not necessarily 0.</para>
+
+ <para>See also the examples in <xref linkend="control" />.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-queryctrl">
+ <title>struct <structname>v4l2_queryctrl</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>id</structfield></entry>
+ <entry>Identifies the control, set by the application. See
+<xref linkend="control-id" /> for predefined IDs. When the ID is ORed
+with V4L2_CTRL_FLAG_NEXT_CTRL the driver clears the flag and returns
+the first control with a higher ID. Drivers which do not support this
+flag yet always return an &EINVAL;.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-ctrl-type;</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry>Type of control, see <xref
+ linkend="v4l2-ctrl-type" />.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>name</structfield>[32]</entry>
+ <entry>Name of the control, a NUL-terminated ASCII
+string. This information is intended for the user.</entry>
+ </row>
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>minimum</structfield></entry>
+ <entry>Minimum value, inclusive. This field gives a lower
+bound for <constant>V4L2_CTRL_TYPE_INTEGER</constant> controls and the
+lowest valid index for <constant>V4L2_CTRL_TYPE_MENU</constant> controls.
+For <constant>V4L2_CTRL_TYPE_STRING</constant> controls the minimum value
+gives the minimum length of the string. This length <emphasis>does not include the terminating
+zero</emphasis>. It may not be valid for any other type of control, including
+<constant>V4L2_CTRL_TYPE_INTEGER64</constant> controls. Note that this is a
+signed value.</entry>
+ </row>
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>maximum</structfield></entry>
+ <entry>Maximum value, inclusive. This field gives an upper
+bound for <constant>V4L2_CTRL_TYPE_INTEGER</constant> controls and the
+highest valid index for <constant>V4L2_CTRL_TYPE_MENU</constant>
+controls. For <constant>V4L2_CTRL_TYPE_BITMASK</constant> controls it is the
+set of usable bits.
+For <constant>V4L2_CTRL_TYPE_STRING</constant> controls the maximum value
+gives the maximum length of the string. This length <emphasis>does not include the terminating
+zero</emphasis>. It may not be valid for any other type of control, including
+<constant>V4L2_CTRL_TYPE_INTEGER64</constant> controls. Note that this is a
+signed value.</entry>
+ </row>
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>step</structfield></entry>
+ <entry><para>This field gives a step size for
+<constant>V4L2_CTRL_TYPE_INTEGER</constant> controls. For
+<constant>V4L2_CTRL_TYPE_STRING</constant> controls this field refers to
+the string length that has to be a multiple of this step size.
+It may not be valid for any other type of control, including
+<constant>V4L2_CTRL_TYPE_INTEGER64</constant>
+controls.</para><para>Generally drivers should not scale hardware
+control values. It may be necessary for example when the
+<structfield>name</structfield> or <structfield>id</structfield> imply
+a particular unit and the hardware actually accepts only multiples of
+said unit. If so, drivers must take care values are properly rounded
+when scaling, such that errors will not accumulate on repeated
+read-write cycles.</para><para>This field gives the smallest change of
+an integer control actually affecting hardware. Often the information
+is needed when the user can change controls by keyboard or GUI
+buttons, rather than a slider. When for example a hardware register
+accepts values 0-511 and the driver reports 0-65535, step should be
+128.</para><para>Note that although signed, the step value is supposed to
+be always positive.</para></entry>
+ </row>
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>default_value</structfield></entry>
+ <entry>The default value of a
+<constant>V4L2_CTRL_TYPE_INTEGER</constant>,
+<constant>_BOOLEAN</constant> or <constant>_MENU</constant> control.
+Not valid for other types of controls. Drivers reset controls only
+when the driver is loaded, not later, in particular not when the
+func-open; is called.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>flags</structfield></entry>
+ <entry>Control flags, see <xref
+ linkend="control-flags" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[2]</entry>
+ <entry>Reserved for future extensions. Drivers must set
+the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-querymenu">
+ <title>struct <structname>v4l2_querymenu</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>id</structfield></entry>
+ <entry>Identifies the control, set by the application
+from the respective &v4l2-queryctrl;
+<structfield>id</structfield>.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>index</structfield></entry>
+ <entry>Index of the menu item, starting at zero, set by
+ the application.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>name</structfield>[32]</entry>
+ <entry>Name of the menu item, a NUL-terminated ASCII
+string. This information is intended for the user.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield></entry>
+ <entry>Reserved for future extensions. Drivers must set
+the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-ctrl-type">
+ <title>enum v4l2_ctrl_type</title>
+ <tgroup cols="5" align="left">
+ <colspec colwidth="30*" />
+ <colspec colwidth="5*" align="center" />
+ <colspec colwidth="5*" align="center" />
+ <colspec colwidth="5*" align="center" />
+ <colspec colwidth="55*" />
+ <thead>
+ <row>
+ <entry>Type</entry>
+ <entry><structfield>minimum</structfield></entry>
+ <entry><structfield>step</structfield></entry>
+ <entry><structfield>maximum</structfield></entry>
+ <entry>Description</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_CTRL_TYPE_INTEGER</constant></entry>
+ <entry>any</entry>
+ <entry>any</entry>
+ <entry>any</entry>
+ <entry>An integer-valued control ranging from minimum to
+maximum inclusive. The step value indicates the increment between
+values which are actually different on the hardware.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_TYPE_BOOLEAN</constant></entry>
+ <entry>0</entry>
+ <entry>1</entry>
+ <entry>1</entry>
+ <entry>A boolean-valued control. Zero corresponds to
+"disabled", and one means "enabled".</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_TYPE_MENU</constant></entry>
+ <entry>≥ 0</entry>
+ <entry>1</entry>
+ <entry>N-1</entry>
+ <entry>The control has a menu of N choices. The names of
+the menu items can be enumerated with the
+<constant>VIDIOC_QUERYMENU</constant> ioctl.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_TYPE_BITMASK</constant></entry>
+ <entry>0</entry>
+ <entry>n/a</entry>
+ <entry>any</entry>
+ <entry>A bitmask field. The maximum value is the set of bits that can
+be used, all other bits are to be 0. The maximum value is interpreted as a __u32,
+allowing the use of bit 31 in the bitmask.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_TYPE_BUTTON</constant></entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>0</entry>
+ <entry>A control which performs an action when set.
+Drivers must ignore the value passed with
+<constant>VIDIOC_S_CTRL</constant> and return an &EINVAL; on a
+<constant>VIDIOC_G_CTRL</constant> attempt.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_TYPE_INTEGER64</constant></entry>
+ <entry>n/a</entry>
+ <entry>n/a</entry>
+ <entry>n/a</entry>
+ <entry>A 64-bit integer valued control. Minimum, maximum
+and step size cannot be queried.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_TYPE_STRING</constant></entry>
+ <entry>≥ 0</entry>
+ <entry>≥ 1</entry>
+ <entry>≥ 0</entry>
+ <entry>The minimum and maximum string lengths. The step size
+means that the string must be (minimum + N * step) characters long for
+N ≥ 0. These lengths do not include the terminating zero, so in order to
+pass a string of length 8 to &VIDIOC-S-EXT-CTRLS; you need to set the
+<structfield>size</structfield> field of &v4l2-ext-control; to 9. For &VIDIOC-G-EXT-CTRLS; you can
+set the <structfield>size</structfield> field to <structfield>maximum</structfield> + 1.
+Which character encoding is used will depend on the string control itself and
+should be part of the control documentation.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_TYPE_CTRL_CLASS</constant></entry>
+ <entry>n/a</entry>
+ <entry>n/a</entry>
+ <entry>n/a</entry>
+ <entry>This is not a control. When
+<constant>VIDIOC_QUERYCTRL</constant> is called with a control ID
+equal to a control class code (see <xref linkend="ctrl-class" />) + 1, the
+ioctl returns the name of the control class and this control type.
+Older drivers which do not support this feature return an
+&EINVAL;.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="control-flags">
+ <title>Control Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_CTRL_FLAG_DISABLED</constant></entry>
+ <entry>0x0001</entry>
+ <entry>This control is permanently disabled and should be
+ignored by the application. Any attempt to change the control will
+result in an &EINVAL;.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_FLAG_GRABBED</constant></entry>
+ <entry>0x0002</entry>
+ <entry>This control is temporarily unchangeable, for
+example because another application took over control of the
+respective resource. Such controls may be displayed specially in a
+user interface. Attempts to change the control may result in an
+&EBUSY;.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_FLAG_READ_ONLY</constant></entry>
+ <entry>0x0004</entry>
+ <entry>This control is permanently readable only. Any
+attempt to change the control will result in an &EINVAL;.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_FLAG_UPDATE</constant></entry>
+ <entry>0x0008</entry>
+ <entry>A hint that changing this control may affect the
+value of other controls within the same control class. Applications
+should update their user interface accordingly.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_FLAG_INACTIVE</constant></entry>
+ <entry>0x0010</entry>
+ <entry>This control is not applicable to the current
+configuration and should be displayed accordingly in a user interface.
+For example the flag may be set on a MPEG audio level 2 bitrate
+control when MPEG audio encoding level 1 was selected with another
+control.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_FLAG_SLIDER</constant></entry>
+ <entry>0x0020</entry>
+ <entry>A hint that this control is best represented as a
+slider-like element in a user interface.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_FLAG_WRITE_ONLY</constant></entry>
+ <entry>0x0040</entry>
+ <entry>This control is permanently writable only. Any
+attempt to read the control will result in an &EACCES; error code. This
+flag is typically present for relative controls or action controls where
+writing a value will cause the device to carry out a given action
+(⪚ motor control) but no meaningful value can be returned.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CTRL_FLAG_VOLATILE</constant></entry>
+ <entry>0x0080</entry>
+ <entry>This control is volatile, which means that the value of the control
+changes continuously. A typical example would be the current gain value if the device
+is in auto-gain mode. In such a case the hardware calculates the gain value based on
+the lighting conditions which can change over time. Note that setting a new value for
+a volatile control will have no effect. The new value will just be ignored.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The &v4l2-queryctrl; <structfield>id</structfield>
+is invalid. The &v4l2-querymenu; <structfield>id</structfield> is
+invalid or <structfield>index</structfield> is out of range (less than
+<structfield>minimum</structfield> or greater than <structfield>maximum</structfield>)
+or this particular menu item is not supported by the driver.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EACCES</errorcode></term>
+ <listitem>
+ <para>An attempt was made to read a write-only control.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
+
+<!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "v4l2.sgml"
+indent-tabs-mode: nil
+End:
+-->
diff --git a/Documentation/DocBook/media/v4l/vidioc-querystd.xml b/Documentation/DocBook/media/v4l/vidioc-querystd.xml
new file mode 100644
index 0000000..4b79c7c
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-querystd.xml
@@ -0,0 +1,66 @@
+<refentry id="vidioc-querystd">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_QUERYSTD</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_QUERYSTD</refname>
+ <refpurpose>Sense the video standard received by the current
+input</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>v4l2_std_id *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_QUERYSTD</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>The hardware may be able to detect the current video
+standard automatically. To do so, applications call <constant>
+VIDIOC_QUERYSTD</constant> with a pointer to a &v4l2-std-id; type. The
+driver stores here a set of candidates, this can be a single flag or a
+set of supported standards if for example the hardware can only
+distinguish between 50 and 60 Hz systems. When detection is not
+possible or fails, the set must contain all standards supported by the
+current video input or output.</para>
+
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml b/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml
new file mode 100644
index 0000000..7be4b1d
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml
@@ -0,0 +1,134 @@
+<refentry id="vidioc-reqbufs">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_REQBUFS</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_REQBUFS</refname>
+ <refpurpose>Initiate Memory Mapping or User Pointer I/O</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_requestbuffers *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_REQBUFS</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>This ioctl is used to initiate <link linkend="mmap">memory
+mapped</link> or <link linkend="userp">user pointer</link>
+I/O. Memory mapped buffers are located in device memory and must be
+allocated with this ioctl before they can be mapped into the
+application's address space. User buffers are allocated by
+applications themselves, and this ioctl is merely used to switch the
+driver into user pointer I/O mode and to setup some internal structures.</para>
+
+ <para>To allocate device buffers applications initialize all
+fields of the <structname>v4l2_requestbuffers</structname> structure.
+They set the <structfield>type</structfield> field to the respective
+stream or buffer type, the <structfield>count</structfield> field to
+the desired number of buffers, <structfield>memory</structfield>
+must be set to the requested I/O method and the <structfield>reserved</structfield> array
+must be zeroed. When the ioctl
+is called with a pointer to this structure the driver will attempt to allocate
+the requested number of buffers and it stores the actual number
+allocated in the <structfield>count</structfield> field. It can be
+smaller than the number requested, even zero, when the driver runs out
+of free memory. A larger number is also possible when the driver requires
+more buffers to function correctly. For example video output requires at least two buffers,
+one displayed and one filled by the application.</para>
+ <para>When the I/O method is not supported the ioctl
+returns an &EINVAL;.</para>
+
+ <para>Applications can call <constant>VIDIOC_REQBUFS</constant>
+again to change the number of buffers, however this cannot succeed
+when any buffers are still mapped. A <structfield>count</structfield>
+value of zero frees all buffers, after aborting or finishing any DMA
+in progress, an implicit &VIDIOC-STREAMOFF;. <!-- mhs: I see no
+reason why munmap()ping one or even all buffers must imply
+streamoff.--></para>
+
+ <table pgwide="1" frame="none" id="v4l2-requestbuffers">
+ <title>struct <structname>v4l2_requestbuffers</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>count</structfield></entry>
+ <entry>The number of buffers requested or granted.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-buf-type;</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry>Type of the stream or buffers, this is the same
+as the &v4l2-format; <structfield>type</structfield> field. See <xref
+ linkend="v4l2-buf-type" /> for valid values.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-memory;</entry>
+ <entry><structfield>memory</structfield></entry>
+ <entry>Applications set this field to
+<constant>V4L2_MEMORY_MMAP</constant> or
+<constant>V4L2_MEMORY_USERPTR</constant>.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[2]</entry>
+ <entry>A place holder for future extensions and custom
+(driver defined) buffer types <constant>V4L2_BUF_TYPE_PRIVATE</constant> and
+higher. This array should be zeroed by applications.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The buffer type (<structfield>type</structfield> field) or the
+requested I/O method (<structfield>memory</structfield>) is not
+supported.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/v4l/vidioc-s-hw-freq-seek.xml b/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-s-hw-freq-seek.xml
rename to Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml
diff --git a/Documentation/DocBook/media/v4l/vidioc-streamon.xml b/Documentation/DocBook/media/v4l/vidioc-streamon.xml
new file mode 100644
index 0000000..81cca45
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-streamon.xml
@@ -0,0 +1,107 @@
+<refentry id="vidioc-streamon">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_STREAMON, VIDIOC_STREAMOFF</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_STREAMON</refname>
+ <refname>VIDIOC_STREAMOFF</refname>
+ <refpurpose>Start or stop streaming I/O</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>const int *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_STREAMON, VIDIOC_STREAMOFF</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>The <constant>VIDIOC_STREAMON</constant> and
+<constant>VIDIOC_STREAMOFF</constant> ioctl start and stop the capture
+or output process during streaming (<link linkend="mmap">memory
+mapping</link> or <link linkend="userp">user pointer</link>) I/O.</para>
+
+ <para>Specifically the capture hardware is disabled and no input
+buffers are filled (if there are any empty buffers in the incoming
+queue) until <constant>VIDIOC_STREAMON</constant> has been called.
+Accordingly the output hardware is disabled, no video signal is
+produced until <constant>VIDIOC_STREAMON</constant> has been called.
+The ioctl will succeed only when at least one output buffer is in the
+incoming queue.</para>
+
+ <para>The <constant>VIDIOC_STREAMOFF</constant> ioctl, apart of
+aborting or finishing any DMA in progress, unlocks any user pointer
+buffers locked in physical memory, and it removes all buffers from the
+incoming and outgoing queues. That means all images captured but not
+dequeued yet will be lost, likewise all images enqueued for output but
+not transmitted yet. I/O returns to the same state as after calling
+&VIDIOC-REQBUFS; and can be restarted accordingly.</para>
+
+ <para>Both ioctls take a pointer to an integer, the desired buffer or
+stream type. This is the same as &v4l2-requestbuffers;
+<structfield>type</structfield>.</para>
+
+ <para>Note applications can be preempted for unknown periods right
+before or after the <constant>VIDIOC_STREAMON</constant> or
+<constant>VIDIOC_STREAMOFF</constant> calls, there is no notion of
+starting or stopping "now". Buffer timestamps can be used to
+synchronize with other events.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The buffer<structfield>type</structfield> is not supported,
+ or no buffers have been allocated (memory mapping) or enqueued
+ (output) yet.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EPIPE</errorcode></term>
+ <listitem>
+ <para>The driver implements <link
+ linkend="pad-level-formats">pad-level format configuration</link> and
+ the pipeline configuration is invalid.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/v4l/vidioc-subdev-enum-frame-interval.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-enum-frame-interval.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-subdev-enum-frame-interval.xml
rename to Documentation/DocBook/media/v4l/vidioc-subdev-enum-frame-interval.xml
diff --git a/Documentation/DocBook/v4l/vidioc-subdev-enum-frame-size.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-enum-frame-size.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-subdev-enum-frame-size.xml
rename to Documentation/DocBook/media/v4l/vidioc-subdev-enum-frame-size.xml
diff --git a/Documentation/DocBook/v4l/vidioc-subdev-enum-mbus-code.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-enum-mbus-code.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-subdev-enum-mbus-code.xml
rename to Documentation/DocBook/media/v4l/vidioc-subdev-enum-mbus-code.xml
diff --git a/Documentation/DocBook/v4l/vidioc-subdev-g-crop.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-g-crop.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-subdev-g-crop.xml
rename to Documentation/DocBook/media/v4l/vidioc-subdev-g-crop.xml
diff --git a/Documentation/DocBook/media/v4l/vidioc-subdev-g-fmt.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-g-fmt.xml
new file mode 100644
index 0000000..a67cde6
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-subdev-g-fmt.xml
@@ -0,0 +1,183 @@
+<refentry id="vidioc-subdev-g-fmt">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_SUBDEV_G_FMT, VIDIOC_SUBDEV_S_FMT</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_SUBDEV_G_FMT</refname>
+ <refname>VIDIOC_SUBDEV_S_FMT</refname>
+ <refpurpose>Get or set the data format on a subdev pad</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_subdev_format *<parameter>argp</parameter>
+ </paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_SUBDEV_G_FMT, VIDIOC_SUBDEV_S_FMT</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <note>
+ <title>Experimental</title>
+ <para>This is an <link linkend="experimental">experimental</link>
+ interface and may change in the future.</para>
+ </note>
+
+ <para>These ioctls are used to negotiate the frame format at specific
+ subdev pads in the image pipeline.</para>
+
+ <para>To retrieve the current format applications set the
+ <structfield>pad</structfield> field of a &v4l2-subdev-format; to the
+ desired pad number as reported by the media API and the
+ <structfield>which</structfield> field to
+ <constant>V4L2_SUBDEV_FORMAT_ACTIVE</constant>. When they call the
+ <constant>VIDIOC_SUBDEV_G_FMT</constant> ioctl with a pointer to this
+ structure the driver fills the members of the <structfield>format</structfield>
+ field.</para>
+
+ <para>To change the current format applications set both the
+ <structfield>pad</structfield> and <structfield>which</structfield> fields
+ and all members of the <structfield>format</structfield> field. When they
+ call the <constant>VIDIOC_SUBDEV_S_FMT</constant> ioctl with a pointer to this
+ structure the driver verifies the requested format, adjusts it based on the
+ hardware capabilities and configures the device. Upon return the
+ &v4l2-subdev-format; contains the current format as would be returned by a
+ <constant>VIDIOC_SUBDEV_G_FMT</constant> call.</para>
+
+ <para>Applications can query the device capabilities by setting the
+ <structfield>which</structfield> to
+ <constant>V4L2_SUBDEV_FORMAT_TRY</constant>. When set, 'try' formats are not
+ applied to the device by the driver, but are changed exactly as active
+ formats and stored in the sub-device file handle. Two applications querying
+ the same sub-device would thus not interact with each other.</para>
+
+ <para>For instance, to try a format at the output pad of a sub-device,
+ applications would first set the try format at the sub-device input with the
+ <constant>VIDIOC_SUBDEV_S_FMT</constant> ioctl. They would then either
+ retrieve the default format at the output pad with the
+ <constant>VIDIOC_SUBDEV_G_FMT</constant> ioctl, or set the desired output
+ pad format with the <constant>VIDIOC_SUBDEV_S_FMT</constant> ioctl and check
+ the returned value.</para>
+
+ <para>Try formats do not depend on active formats, but can depend on the
+ current links configuration or sub-device controls value. For instance, a
+ low-pass noise filter might crop pixels at the frame boundaries, modifying
+ its output frame size.</para>
+
+ <para>Drivers must not return an error solely because the requested format
+ doesn't match the device capabilities. They must instead modify the format
+ to match what the hardware can provide. The modified format should be as
+ close as possible to the original request.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-subdev-format">
+ <title>struct <structname>v4l2_subdev_format</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>pad</structfield></entry>
+ <entry>Pad number as reported by the media controller API.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>which</structfield></entry>
+ <entry>Format to modified, from &v4l2-subdev-format-whence;.</entry>
+ </row>
+ <row>
+ <entry>&v4l2-mbus-framefmt;</entry>
+ <entry><structfield>format</structfield></entry>
+ <entry>Definition of an image format, see <xref
+ linkend="v4l2-mbus-framefmt" /> for details.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[8]</entry>
+ <entry>Reserved for future extensions. Applications and drivers must
+ set the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-subdev-format-whence">
+ <title>enum <structname>v4l2_subdev_format_whence</structname></title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry>V4L2_SUBDEV_FORMAT_TRY</entry>
+ <entry>0</entry>
+ <entry>Try formats, used for querying device capabilities.</entry>
+ </row>
+ <row>
+ <entry>V4L2_SUBDEV_FORMAT_ACTIVE</entry>
+ <entry>1</entry>
+ <entry>Active formats, applied to the hardware.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EBUSY</errorcode></term>
+ <listitem>
+ <para>The format can't be changed because the pad is currently busy.
+ This can be caused, for instance, by an active video stream on the
+ pad. The ioctl must not be retried without performing another action
+ to fix the problem first. Only returned by
+ <constant>VIDIOC_SUBDEV_S_FMT</constant></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The &v4l2-subdev-format; <structfield>pad</structfield>
+ references a non-existing pad, or the <structfield>which</structfield>
+ field references a non-existing format.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/v4l/vidioc-subdev-g-frame-interval.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-g-frame-interval.xml
similarity index 100%
rename from Documentation/DocBook/v4l/vidioc-subdev-g-frame-interval.xml
rename to Documentation/DocBook/media/v4l/vidioc-subdev-g-frame-interval.xml
diff --git a/Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml b/Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml
new file mode 100644
index 0000000..5c70b61
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml
@@ -0,0 +1,206 @@
+<refentry id="vidioc-subscribe-event">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</refname>
+ <refpurpose>Subscribe or unsubscribe event</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_event_subscription
+*<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>Subscribe or unsubscribe V4L2 event. Subscribed events are
+ dequeued by using the &VIDIOC-DQEVENT; ioctl.</para>
+
+ <table frame="none" pgwide="1" id="v4l2-event-subscription">
+ <title>struct <structname>v4l2_event_subscription</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry>Type of the event.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>id</structfield></entry>
+ <entry>ID of the event source. If there is no ID associated with
+ the event source, then set this to 0. Whether or not an event
+ needs an ID depends on the event type.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>flags</structfield></entry>
+ <entry>Event flags, see <xref linkend="event-flags" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[5]</entry>
+ <entry>Reserved for future extensions. Drivers and applications
+ must set the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table frame="none" pgwide="1" id="event-type">
+ <title>Event Types</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_EVENT_ALL</constant></entry>
+ <entry>0</entry>
+ <entry>All events. V4L2_EVENT_ALL is valid only for
+ VIDIOC_UNSUBSCRIBE_EVENT for unsubscribing all events at once.
+ </entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_EVENT_VSYNC</constant></entry>
+ <entry>1</entry>
+ <entry>This event is triggered on the vertical sync.
+ This event has a &v4l2-event-vsync; associated with it.
+ </entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_EVENT_EOS</constant></entry>
+ <entry>2</entry>
+ <entry>This event is triggered when the end of a stream is reached.
+ This is typically used with MPEG decoders to report to the application
+ when the last of the MPEG stream has been decoded.
+ </entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_EVENT_CTRL</constant></entry>
+ <entry>3</entry>
+ <entry><para>This event requires that the <structfield>id</structfield>
+ matches the control ID from which you want to receive events.
+ This event is triggered if the control's value changes, if a
+ button control is pressed or if the control's flags change.
+ This event has a &v4l2-event-ctrl; associated with it. This struct
+ contains much of the same information as &v4l2-queryctrl; and
+ &v4l2-control;.</para>
+
+ <para>If the event is generated due to a call to &VIDIOC-S-CTRL; or
+ &VIDIOC-S-EXT-CTRLS;, then the event will <emphasis>not</emphasis> be sent to
+ the file handle that called the ioctl function. This prevents
+ nasty feedback loops. If you <emphasis>do</emphasis> want to get the
+ event, then set the <constant>V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK</constant>
+ flag.
+ </para>
+
+ <para>This event type will ensure that no information is lost when
+ more events are raised than there is room internally. In that
+ case the &v4l2-event-ctrl; of the second-oldest event is kept,
+ but the <structfield>changes</structfield> field of the
+ second-oldest event is ORed with the <structfield>changes</structfield>
+ field of the oldest event.</para>
+ </entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_EVENT_FRAME_SYNC</constant></entry>
+ <entry>4</entry>
+ <entry>
+ <para>Triggered immediately when the reception of a
+ frame has begun. This event has a
+ &v4l2-event-frame-sync; associated with it.</para>
+
+ <para>If the hardware needs to be stopped in the case of a
+ buffer underrun it might not be able to generate this event.
+ In such cases the <structfield>frame_sequence</structfield>
+ field in &v4l2-event-frame-sync; will not be incremented. This
+ causes two consecutive frame sequence numbers to have n times
+ frame interval in between them.</para>
+ </entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_EVENT_PRIVATE_START</constant></entry>
+ <entry>0x08000000</entry>
+ <entry>Base event number for driver-private events.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="event-flags">
+ <title>Event Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_EVENT_SUB_FL_SEND_INITIAL</constant></entry>
+ <entry>0x0001</entry>
+ <entry>When this event is subscribed an initial event will be sent
+ containing the current status. This only makes sense for events
+ that are triggered by a status change such as <constant>V4L2_EVENT_CTRL</constant>.
+ Other events will ignore this flag.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK</constant></entry>
+ <entry>0x0002</entry>
+ <entry><para>If set, then events directly caused by an ioctl will also be sent to
+ the filehandle that called that ioctl. For example, changing a control using
+ &VIDIOC-S-CTRL; will cause a V4L2_EVENT_CTRL to be sent back to that same
+ filehandle. Normally such events are suppressed to prevent feedback loops
+ where an application changes a control to a one value and then another, and
+ then receives an event telling it that that control has changed to the first
+ value.</para>
+
+ <para>Since it can't tell whether that event was caused by another application
+ or by the &VIDIOC-S-CTRL; call it is hard to decide whether to set the
+ control to the value in the event, or ignore it.</para>
+
+ <para>Think carefully when you set this flag so you won't get into situations
+ like that.</para>
+ </entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ </refsect1>
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/vbi_525.gif.b64 b/Documentation/DocBook/media/vbi_525.gif.b64
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new file mode 100644
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diff --git a/Documentation/DocBook/media/vbi_hsync.gif.b64 b/Documentation/DocBook/media/vbi_hsync.gif.b64
new file mode 100644
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diff --git a/Documentation/DocBook/media_api.tmpl b/Documentation/DocBook/media_api.tmpl
new file mode 100644
index 0000000..4e8e898
--- /dev/null
+++ b/Documentation/DocBook/media_api.tmpl
@@ -0,0 +1,121 @@
+<?xml version="1.0"?>
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [
+<!ENTITY % media-entities SYSTEM "./media-entities.tmpl"> %media-entities;
+<!ENTITY media-indices SYSTEM "./media-indices.tmpl">
+
+<!ENTITY eg "e. g.">
+<!ENTITY ie "i. e.">
+<!ENTITY fd "File descriptor returned by <link linkend='func-open'><function>open()</function></link>.">
+<!ENTITY i2c "I<superscript>2</superscript>C">
+<!ENTITY return-value "<title>Return Value</title><para>On success <returnvalue>0</returnvalue> is returned, on error <returnvalue>-1</returnvalue> and the <varname>errno</varname> variable is set appropriately. The generic error codes are described at the <link linkend='gen-errors'>Generic Error Codes</link> chapter.</para>">
+<!ENTITY return-value-dvb "<para>RETURN VALUE</para><para>On success <returnvalue>0</returnvalue> is returned, on error <returnvalue>-1</returnvalue> and the <varname>errno</varname> variable is set appropriately. The generic error codes are described at the <link linkend='gen-errors'>Generic Error Codes</link> chapter.</para>">
+<!ENTITY manvol "<manvolnum>2</manvolnum>">
+
+<!-- Table templates: structs, structs w/union, defines. -->
+<!ENTITY cs-str "<colspec colname='c1' colwidth='1*' /><colspec colname='c2' colwidth='1*' /><colspec colname='c3' colwidth='2*' /><spanspec spanname='hspan' namest='c1' nameend='c3' />">
+<!ENTITY cs-ustr "<colspec colname='c1' colwidth='1*' /><colspec colname='c2' colwidth='1*' /><colspec colname='c3' colwidth='1*' /><colspec colname='c4' colwidth='2*' /><spanspec spanname='hspan' namest='c1' nameend='c4' />">
+<!ENTITY cs-def "<colspec colname='c1' colwidth='3*' /><colspec colname='c2' colwidth='1*' /><colspec colname='c3' colwidth='4*' /><spanspec spanname='hspan' namest='c1' nameend='c3' />">
+
+<!-- Video for Linux mailing list address. -->
+<!ENTITY v4l-ml "<ulink url='http://www.linuxtv.org/lists.php'>http://www.linuxtv.org/lists.php</ulink>">
+
+<!-- LinuxTV v4l-dvb repository. -->
+<!ENTITY v4l-dvb "<ulink url='http://linuxtv.org/repo/'>http://linuxtv.org/repo/</ulink>">
+]>
+
+<book id="media_api">
+<bookinfo>
+<title>LINUX MEDIA INFRASTRUCTURE API</title>
+
+<copyright>
+ <year>2009-2011</year>
+ <holder>LinuxTV Developers</holder>
+</copyright>
+
+<legalnotice>
+
+<para>Permission is granted to copy, distribute and/or modify
+this document under the terms of the GNU Free Documentation License,
+Version 1.1 or any later version published by the Free Software
+Foundation. A copy of the license is included in the chapter entitled
+"GNU Free Documentation License"</para>
+</legalnotice>
+
+</bookinfo>
+
+<toc></toc> <!-- autogenerated -->
+
+<preface>
+ <title>Introduction</title>
+
+ <para>This document covers the Linux Kernel to Userspace API's used by
+ video and radio straming devices, including video cameras,
+ analog and digital TV receiver cards, AM/FM receiver cards,
+ streaming capture devices.</para>
+ <para>It is divided into three parts.</para>
+ <para>The first part covers radio, capture,
+ cameras and analog TV devices.</para>
+ <para>The second part covers the
+ API used for digital TV and Internet reception via one of the
+ several digital tv standards. While it is called as DVB API,
+ in fact it covers several different video standards including
+ DVB-T, DVB-S, DVB-C and ATSC. The API is currently being updated
+ to documment support also for DVB-S2, ISDB-T and ISDB-S.</para>
+ <para>The third part covers Remote Controller API</para>
+ <para>For additional information and for the latest development code,
+ see: <ulink url="http://linuxtv.org">http://linuxtv.org</ulink>.</para>
+ <para>For discussing improvements, reporting troubles, sending new drivers, etc, please mail to: <ulink url="http://vger.kernel.org/vger-lists.html#linux-media">Linux Media Mailing List (LMML).</ulink>.</para>
+
+</preface>
+
+<part id="v4l2spec">
+&sub-v4l2;
+</part>
+<part id="dvbapi">
+&sub-dvbapi;
+</part>
+<part id="v4ldvb_common">
+<partinfo>
+<authorgroup>
+<author>
+<firstname>Mauro</firstname>
+<surname>Chehab</surname>
+<othername role="mi">Carvalho</othername>
+<affiliation><address><email>mchehab@redhat.com</email></address></affiliation>
+<contrib>Initial version.</contrib>
+</author>
+</authorgroup>
+<copyright>
+ <year>2009-2011</year>
+ <holder>Mauro Carvalho Chehab</holder>
+</copyright>
+
+<revhistory>
+<!-- Put document revisions here, newest first. -->
+<revision>
+<revnumber>1.0.0</revnumber>
+<date>2009-09-06</date>
+<authorinitials>mcc</authorinitials>
+<revremark>Initial revision</revremark>
+</revision>
+</revhistory>
+</partinfo>
+
+<title>Remote Controller API</title>
+<chapter id="remote_controllers">
+&sub-remote_controllers;
+</chapter>
+</part>
+<part id="media_common">
+&sub-media-controller;
+</part>
+
+<chapter id="gen_errors">
+&sub-gen-errors;
+</chapter>
+
+
+&sub-fdl-appendix;
+
+</book>
diff --git a/Documentation/DocBook/mtdnand.tmpl b/Documentation/DocBook/mtdnand.tmpl
index 17910e2..0c674be 100644
--- a/Documentation/DocBook/mtdnand.tmpl
+++ b/Documentation/DocBook/mtdnand.tmpl
@@ -572,7 +572,7 @@
</para>
<para>
The simplest way to activate the FLASH based bad block table support
- is to set the option NAND_USE_FLASH_BBT in the option field of
+ is to set the option NAND_BBT_USE_FLASH in the bbt_option field of
the nand chip structure before calling nand_scan(). For AG-AND
chips is this done by default.
This activates the default FLASH based bad block table functionality
@@ -773,20 +773,6 @@
done according to the default builtin scheme.
</para>
</sect2>
- <sect2 id="User_space_placement_selection">
- <title>User space placement selection</title>
- <para>
- All non ecc functions like mtd->read and mtd->write use an internal
- structure, which can be set by an ioctl. This structure is preset
- to the autoplacement default.
- <programlisting>
- ioctl (fd, MEMSETOOBSEL, oobsel);
- </programlisting>
- oobsel is a pointer to a user supplied structure of type
- nand_oobconfig. The contents of this structure must match the
- criteria of the filesystem, which will be used. See an example in utils/nandwrite.c.
- </para>
- </sect2>
</sect1>
<sect1 id="Spare_area_autoplacement_default">
<title>Spare area autoplacement default schemes</title>
@@ -1158,9 +1144,6 @@
These constants are defined in nand.h. They are ored together to describe
the functionality.
<programlisting>
-/* Use a flash based bad block table. This option is parsed by the
- * default bad block table function (nand_default_bbt). */
-#define NAND_USE_FLASH_BBT 0x00010000
/* The hw ecc generator provides a syndrome instead a ecc value on read
* This can only work if we have the ecc bytes directly behind the
* data bytes. Applies for DOC and AG-AND Renesas HW Reed Solomon generators */
diff --git a/Documentation/DocBook/uio-howto.tmpl b/Documentation/DocBook/uio-howto.tmpl
index 7c4b514d..ac3d001 100644
--- a/Documentation/DocBook/uio-howto.tmpl
+++ b/Documentation/DocBook/uio-howto.tmpl
@@ -521,6 +521,11 @@
<itemizedlist>
<listitem><para>
+<varname>const char *name</varname>: Optional. Set this to help identify
+the memory region, it will show up in the corresponding sysfs node.
+</para></listitem>
+
+<listitem><para>
<varname>int memtype</varname>: Required if the mapping is used. Set this to
<varname>UIO_MEM_PHYS</varname> if you you have physical memory on your
card to be mapped. Use <varname>UIO_MEM_LOGICAL</varname> for logical
@@ -529,7 +534,7 @@
</para></listitem>
<listitem><para>
-<varname>unsigned long addr</varname>: Required if the mapping is used.
+<varname>phys_addr_t addr</varname>: Required if the mapping is used.
Fill in the address of your memory block. This address is the one that
appears in sysfs.
</para></listitem>
@@ -553,7 +558,7 @@
</itemizedlist>
<para>
-Please do not touch the <varname>kobj</varname> element of
+Please do not touch the <varname>map</varname> element of
<varname>struct uio_mem</varname>! It is used by the UIO framework
to set up sysfs files for this mapping. Simply leave it alone.
</para>
diff --git a/Documentation/DocBook/v4l/bayer.pdf b/Documentation/DocBook/v4l/bayer.pdf
deleted file mode 100644
index 905e60e..0000000
--- a/Documentation/DocBook/v4l/bayer.pdf
+++ /dev/null
Binary files differ
diff --git a/Documentation/DocBook/v4l/bayer.png b/Documentation/DocBook/v4l/bayer.png
deleted file mode 100644
index 9b15fb2..0000000
--- a/Documentation/DocBook/v4l/bayer.png
+++ /dev/null
Binary files differ
diff --git a/Documentation/DocBook/v4l/common.xml b/Documentation/DocBook/v4l/common.xml
deleted file mode 100644
index 9028721..0000000
--- a/Documentation/DocBook/v4l/common.xml
+++ /dev/null
@@ -1,1197 +0,0 @@
- <title>Common API Elements</title>
-
- <para>Programming a V4L2 device consists of these
-steps:</para>
-
- <itemizedlist>
- <listitem>
- <para>Opening the device</para>
- </listitem>
- <listitem>
- <para>Changing device properties, selecting a video and audio
-input, video standard, picture brightness a. o.</para>
- </listitem>
- <listitem>
- <para>Negotiating a data format</para>
- </listitem>
- <listitem>
- <para>Negotiating an input/output method</para>
- </listitem>
- <listitem>
- <para>The actual input/output loop</para>
- </listitem>
- <listitem>
- <para>Closing the device</para>
- </listitem>
- </itemizedlist>
-
- <para>In practice most steps are optional and can be executed out of
-order. It depends on the V4L2 device type, you can read about the
-details in <xref linkend="devices" />. In this chapter we will discuss
-the basic concepts applicable to all devices.</para>
-
- <section id="open">
- <title>Opening and Closing Devices</title>
-
- <section>
- <title>Device Naming</title>
-
- <para>V4L2 drivers are implemented as kernel modules, loaded
-manually by the system administrator or automatically when a device is
-first opened. The driver modules plug into the "videodev" kernel
-module. It provides helper functions and a common application
-interface specified in this document.</para>
-
- <para>Each driver thus loaded registers one or more device nodes
-with major number 81 and a minor number between 0 and 255. Assigning
-minor numbers to V4L2 devices is entirely up to the system administrator,
-this is primarily intended to solve conflicts between devices.<footnote>
- <para>Access permissions are associated with character
-device special files, hence we must ensure device numbers cannot
-change with the module load order. To this end minor numbers are no
-longer automatically assigned by the "videodev" module as in V4L but
-requested by the driver. The defaults will suffice for most people
-unless two drivers compete for the same minor numbers.</para>
- </footnote> The module options to select minor numbers are named
-after the device special file with a "_nr" suffix. For example "video_nr"
-for <filename>/dev/video</filename> video capture devices. The number is
-an offset to the base minor number associated with the device type.
-<footnote>
- <para>In earlier versions of the V4L2 API the module options
-where named after the device special file with a "unit_" prefix, expressing
-the minor number itself, not an offset. Rationale for this change is unknown.
-Lastly the naming and semantics are just a convention among driver writers,
-the point to note is that minor numbers are not supposed to be hardcoded
-into drivers.</para>
- </footnote> When the driver supports multiple devices of the same
-type more than one minor number can be assigned, separated by commas:
-<informalexample>
- <screen>
-> insmod mydriver.o video_nr=0,1 radio_nr=0,1</screen>
- </informalexample></para>
-
- <para>In <filename>/etc/modules.conf</filename> this may be
-written as: <informalexample>
- <screen>
-alias char-major-81-0 mydriver
-alias char-major-81-1 mydriver
-alias char-major-81-64 mydriver <co id="alias" />
-options mydriver video_nr=0,1 radio_nr=0,1 <co id="options" />
- </screen>
- <calloutlist>
- <callout arearefs="alias">
- <para>When an application attempts to open a device
-special file with major number 81 and minor number 0, 1, or 64, load
-"mydriver" (and the "videodev" module it depends upon).</para>
- </callout>
- <callout arearefs="options">
- <para>Register the first two video capture devices with
-minor number 0 and 1 (base number is 0), the first two radio device
-with minor number 64 and 65 (base 64).</para>
- </callout>
- </calloutlist>
- </informalexample> When no minor number is given as module
-option the driver supplies a default. <xref linkend="devices" />
-recommends the base minor numbers to be used for the various device
-types. Obviously minor numbers must be unique. When the number is
-already in use the <emphasis>offending device</emphasis> will not be
-registered. <!-- Blessed by Linus Torvalds on
-linux-kernel@vger.kernel.org, 2002-11-20. --></para>
-
- <para>By convention system administrators create various
-character device special files with these major and minor numbers in
-the <filename>/dev</filename> directory. The names recommended for the
-different V4L2 device types are listed in <xref linkend="devices" />.
-</para>
-
- <para>The creation of character special files (with
-<application>mknod</application>) is a privileged operation and
-devices cannot be opened by major and minor number. That means
-applications cannot <emphasis>reliable</emphasis> scan for loaded or
-installed drivers. The user must enter a device name, or the
-application can try the conventional device names.</para>
-
- <para>Under the device filesystem (devfs) the minor number
-options are ignored. V4L2 drivers (or by proxy the "videodev" module)
-automatically create the required device files in the
-<filename>/dev/v4l</filename> directory using the conventional device
-names above.</para>
- </section>
-
- <section id="related">
- <title>Related Devices</title>
-
- <para>Devices can support several related functions. For example
-video capturing, video overlay and VBI capturing are related because
-these functions share, amongst other, the same video input and tuner
-frequency. V4L and earlier versions of V4L2 used the same device name
-and minor number for video capturing and overlay, but different ones
-for VBI. Experience showed this approach has several problems<footnote>
- <para>Given a device file name one cannot reliable find
-related devices. For once names are arbitrary and in a system with
-multiple devices, where only some support VBI capturing, a
-<filename>/dev/video2</filename> is not necessarily related to
-<filename>/dev/vbi2</filename>. The V4L
-<constant>VIDIOCGUNIT</constant> ioctl would require a search for a
-device file with a particular major and minor number.</para>
- </footnote>, and to make things worse the V4L videodev module
-used to prohibit multiple opens of a device.</para>
-
- <para>As a remedy the present version of the V4L2 API relaxed the
-concept of device types with specific names and minor numbers. For
-compatibility with old applications drivers must still register different
-minor numbers to assign a default function to the device. But if related
-functions are supported by the driver they must be available under all
-registered minor numbers. The desired function can be selected after
-opening the device as described in <xref linkend="devices" />.</para>
-
- <para>Imagine a driver supporting video capturing, video
-overlay, raw VBI capturing, and FM radio reception. It registers three
-devices with minor number 0, 64 and 224 (this numbering scheme is
-inherited from the V4L API). Regardless if
-<filename>/dev/video</filename> (81, 0) or
-<filename>/dev/vbi</filename> (81, 224) is opened the application can
-select any one of the video capturing, overlay or VBI capturing
-functions. Without programming (e. g. reading from the device
-with <application>dd</application> or <application>cat</application>)
-<filename>/dev/video</filename> captures video images, while
-<filename>/dev/vbi</filename> captures raw VBI data.
-<filename>/dev/radio</filename> (81, 64) is invariable a radio device,
-unrelated to the video functions. Being unrelated does not imply the
-devices can be used at the same time, however. The &func-open;
-function may very well return an &EBUSY;.</para>
-
- <para>Besides video input or output the hardware may also
-support audio sampling or playback. If so, these functions are
-implemented as OSS or ALSA PCM devices and eventually OSS or ALSA
-audio mixer. The V4L2 API makes no provisions yet to find these
-related devices. If you have an idea please write to the linux-media
-mailing list: &v4l-ml;.</para>
- </section>
-
- <section>
- <title>Multiple Opens</title>
-
- <para>In general, V4L2 devices can be opened more than once.
-When this is supported by the driver, users can for example start a
-"panel" application to change controls like brightness or audio
-volume, while another application captures video and audio. In other words, panel
-applications are comparable to an OSS or ALSA audio mixer application.
-When a device supports multiple functions like capturing and overlay
-<emphasis>simultaneously</emphasis>, multiple opens allow concurrent
-use of the device by forked processes or specialized applications.</para>
-
- <para>Multiple opens are optional, although drivers should
-permit at least concurrent accesses without data exchange, &ie; panel
-applications. This implies &func-open; can return an &EBUSY; when the
-device is already in use, as well as &func-ioctl; functions initiating
-data exchange (namely the &VIDIOC-S-FMT; ioctl), and the &func-read;
-and &func-write; functions.</para>
-
- <para>Mere opening a V4L2 device does not grant exclusive
-access.<footnote>
- <para>Drivers could recognize the
-<constant>O_EXCL</constant> open flag. Presently this is not required,
-so applications cannot know if it really works.</para>
- </footnote> Initiating data exchange however assigns the right
-to read or write the requested type of data, and to change related
-properties, to this file descriptor. Applications can request
-additional access privileges using the priority mechanism described in
-<xref linkend="app-pri" />.</para>
- </section>
-
- <section>
- <title>Shared Data Streams</title>
-
- <para>V4L2 drivers should not support multiple applications
-reading or writing the same data stream on a device by copying
-buffers, time multiplexing or similar means. This is better handled by
-a proxy application in user space. When the driver supports stream
-sharing anyway it must be implemented transparently. The V4L2 API does
-not specify how conflicts are solved. <!-- For example O_EXCL when the
-application does not want to be preempted, PROT_READ mmapped buffers
-which can be mapped twice, what happens when image formats do not
-match etc.--></para>
- </section>
-
- <section>
- <title>Functions</title>
-
- <para>To open and close V4L2 devices applications use the
-&func-open; and &func-close; function, respectively. Devices are
-programmed using the &func-ioctl; function as explained in the
-following sections.</para>
- </section>
- </section>
-
- <section id="querycap">
- <title>Querying Capabilities</title>
-
- <para>Because V4L2 covers a wide variety of devices not all
-aspects of the API are equally applicable to all types of devices.
-Furthermore devices of the same type have different capabilities and
-this specification permits the omission of a few complicated and less
-important parts of the API.</para>
-
- <para>The &VIDIOC-QUERYCAP; ioctl is available to check if the kernel
-device is compatible with this specification, and to query the <link
-linkend="devices">functions</link> and <link linkend="io">I/O
-methods</link> supported by the device. Other features can be queried
-by calling the respective ioctl, for example &VIDIOC-ENUMINPUT;
-to learn about the number, types and names of video connectors on the
-device. Although abstraction is a major objective of this API, the
-ioctl also allows driver specific applications to reliable identify
-the driver.</para>
-
- <para>All V4L2 drivers must support
-<constant>VIDIOC_QUERYCAP</constant>. Applications should always call
-this ioctl after opening the device.</para>
- </section>
-
- <section id="app-pri">
- <title>Application Priority</title>
-
- <para>When multiple applications share a device it may be
-desirable to assign them different priorities. Contrary to the
-traditional "rm -rf /" school of thought a video recording application
-could for example block other applications from changing video
-controls or switching the current TV channel. Another objective is to
-permit low priority applications working in background, which can be
-preempted by user controlled applications and automatically regain
-control of the device at a later time.</para>
-
- <para>Since these features cannot be implemented entirely in user
-space V4L2 defines the &VIDIOC-G-PRIORITY; and &VIDIOC-S-PRIORITY;
-ioctls to request and query the access priority associate with a file
-descriptor. Opening a device assigns a medium priority, compatible
-with earlier versions of V4L2 and drivers not supporting these ioctls.
-Applications requiring a different priority will usually call
-<constant>VIDIOC_S_PRIORITY</constant> after verifying the device with
-the &VIDIOC-QUERYCAP; ioctl.</para>
-
- <para>Ioctls changing driver properties, such as &VIDIOC-S-INPUT;,
-return an &EBUSY; after another application obtained higher priority.
-An event mechanism to notify applications about asynchronous property
-changes has been proposed but not added yet.</para>
- </section>
-
- <section id="video">
- <title>Video Inputs and Outputs</title>
-
- <para>Video inputs and outputs are physical connectors of a
-device. These can be for example RF connectors (antenna/cable), CVBS
-a.k.a. Composite Video, S-Video or RGB connectors. Only video and VBI
-capture devices have inputs, output devices have outputs, at least one
-each. Radio devices have no video inputs or outputs.</para>
-
- <para>To learn about the number and attributes of the
-available inputs and outputs applications can enumerate them with the
-&VIDIOC-ENUMINPUT; and &VIDIOC-ENUMOUTPUT; ioctl, respectively. The
-&v4l2-input; returned by the <constant>VIDIOC_ENUMINPUT</constant>
-ioctl also contains signal status information applicable when the
-current video input is queried.</para>
-
- <para>The &VIDIOC-G-INPUT; and &VIDIOC-G-OUTPUT; ioctl return the
-index of the current video input or output. To select a different
-input or output applications call the &VIDIOC-S-INPUT; and
-&VIDIOC-S-OUTPUT; ioctl. Drivers must implement all the input ioctls
-when the device has one or more inputs, all the output ioctls when the
-device has one or more outputs.</para>
-
- <!--
- <figure id=io-tree>
- <title>Input and output enumeration is the root of most device properties.</title>
- <mediaobject>
- <imageobject>
- <imagedata fileref="links.pdf" format="ps" />
- </imageobject>
- <imageobject>
- <imagedata fileref="links.gif" format="gif" />
- </imageobject>
- <textobject>
- <phrase>Links between various device property structures.</phrase>
- </textobject>
- </mediaobject>
- </figure>
- -->
-
- <example>
- <title>Information about the current video input</title>
-
- <programlisting>
-&v4l2-input; input;
-int index;
-
-if (-1 == ioctl (fd, &VIDIOC-G-INPUT;, &index)) {
- perror ("VIDIOC_G_INPUT");
- exit (EXIT_FAILURE);
-}
-
-memset (&input, 0, sizeof (input));
-input.index = index;
-
-if (-1 == ioctl (fd, &VIDIOC-ENUMINPUT;, &input)) {
- perror ("VIDIOC_ENUMINPUT");
- exit (EXIT_FAILURE);
-}
-
-printf ("Current input: %s\n", input.name);
- </programlisting>
- </example>
-
- <example>
- <title>Switching to the first video input</title>
-
- <programlisting>
-int index;
-
-index = 0;
-
-if (-1 == ioctl (fd, &VIDIOC-S-INPUT;, &index)) {
- perror ("VIDIOC_S_INPUT");
- exit (EXIT_FAILURE);
-}
- </programlisting>
- </example>
- </section>
-
- <section id="audio">
- <title>Audio Inputs and Outputs</title>
-
- <para>Audio inputs and outputs are physical connectors of a
-device. Video capture devices have inputs, output devices have
-outputs, zero or more each. Radio devices have no audio inputs or
-outputs. They have exactly one tuner which in fact
-<emphasis>is</emphasis> an audio source, but this API associates
-tuners with video inputs or outputs only, and radio devices have
-none of these.<footnote>
- <para>Actually &v4l2-audio; ought to have a
-<structfield>tuner</structfield> field like &v4l2-input;, not only
-making the API more consistent but also permitting radio devices with
-multiple tuners.</para>
- </footnote> A connector on a TV card to loop back the received
-audio signal to a sound card is not considered an audio output.</para>
-
- <para>Audio and video inputs and outputs are associated. Selecting
-a video source also selects an audio source. This is most evident when
-the video and audio source is a tuner. Further audio connectors can
-combine with more than one video input or output. Assumed two
-composite video inputs and two audio inputs exist, there may be up to
-four valid combinations. The relation of video and audio connectors
-is defined in the <structfield>audioset</structfield> field of the
-respective &v4l2-input; or &v4l2-output;, where each bit represents
-the index number, starting at zero, of one audio input or output.</para>
-
- <para>To learn about the number and attributes of the
-available inputs and outputs applications can enumerate them with the
-&VIDIOC-ENUMAUDIO; and &VIDIOC-ENUMAUDOUT; ioctl, respectively. The
-&v4l2-audio; returned by the <constant>VIDIOC_ENUMAUDIO</constant> ioctl
-also contains signal status information applicable when the current
-audio input is queried.</para>
-
- <para>The &VIDIOC-G-AUDIO; and &VIDIOC-G-AUDOUT; ioctl report
-the current audio input and output, respectively. Note that, unlike
-&VIDIOC-G-INPUT; and &VIDIOC-G-OUTPUT; these ioctls return a structure
-as <constant>VIDIOC_ENUMAUDIO</constant> and
-<constant>VIDIOC_ENUMAUDOUT</constant> do, not just an index.</para>
-
- <para>To select an audio input and change its properties
-applications call the &VIDIOC-S-AUDIO; ioctl. To select an audio
-output (which presently has no changeable properties) applications
-call the &VIDIOC-S-AUDOUT; ioctl.</para>
-
- <para>Drivers must implement all input ioctls when the device
-has one or more inputs, all output ioctls when the device has one
-or more outputs. When the device has any audio inputs or outputs the
-driver must set the <constant>V4L2_CAP_AUDIO</constant> flag in the
-&v4l2-capability; returned by the &VIDIOC-QUERYCAP; ioctl.</para>
-
- <example>
- <title>Information about the current audio input</title>
-
- <programlisting>
-&v4l2-audio; audio;
-
-memset (&audio, 0, sizeof (audio));
-
-if (-1 == ioctl (fd, &VIDIOC-G-AUDIO;, &audio)) {
- perror ("VIDIOC_G_AUDIO");
- exit (EXIT_FAILURE);
-}
-
-printf ("Current input: %s\n", audio.name);
- </programlisting>
- </example>
-
- <example>
- <title>Switching to the first audio input</title>
-
- <programlisting>
-&v4l2-audio; audio;
-
-memset (&audio, 0, sizeof (audio)); /* clear audio.mode, audio.reserved */
-
-audio.index = 0;
-
-if (-1 == ioctl (fd, &VIDIOC-S-AUDIO;, &audio)) {
- perror ("VIDIOC_S_AUDIO");
- exit (EXIT_FAILURE);
-}
- </programlisting>
- </example>
- </section>
-
- <section id="tuner">
- <title>Tuners and Modulators</title>
-
- <section>
- <title>Tuners</title>
-
- <para>Video input devices can have one or more tuners
-demodulating a RF signal. Each tuner is associated with one or more
-video inputs, depending on the number of RF connectors on the tuner.
-The <structfield>type</structfield> field of the respective
-&v4l2-input; returned by the &VIDIOC-ENUMINPUT; ioctl is set to
-<constant>V4L2_INPUT_TYPE_TUNER</constant> and its
-<structfield>tuner</structfield> field contains the index number of
-the tuner.</para>
-
- <para>Radio devices have exactly one tuner with index zero, no
-video inputs.</para>
-
- <para>To query and change tuner properties applications use the
-&VIDIOC-G-TUNER; and &VIDIOC-S-TUNER; ioctl, respectively. The
-&v4l2-tuner; returned by <constant>VIDIOC_G_TUNER</constant> also
-contains signal status information applicable when the tuner of the
-current video input, or a radio tuner is queried. Note that
-<constant>VIDIOC_S_TUNER</constant> does not switch the current tuner,
-when there is more than one at all. The tuner is solely determined by
-the current video input. Drivers must support both ioctls and set the
-<constant>V4L2_CAP_TUNER</constant> flag in the &v4l2-capability;
-returned by the &VIDIOC-QUERYCAP; ioctl when the device has one or
-more tuners.</para>
- </section>
-
- <section>
- <title>Modulators</title>
-
- <para>Video output devices can have one or more modulators, uh,
-modulating a video signal for radiation or connection to the antenna
-input of a TV set or video recorder. Each modulator is associated with
-one or more video outputs, depending on the number of RF connectors on
-the modulator. The <structfield>type</structfield> field of the
-respective &v4l2-output; returned by the &VIDIOC-ENUMOUTPUT; ioctl is
-set to <constant>V4L2_OUTPUT_TYPE_MODULATOR</constant> and its
-<structfield>modulator</structfield> field contains the index number
-of the modulator. This specification does not define radio output
-devices.</para>
-
- <para>To query and change modulator properties applications use
-the &VIDIOC-G-MODULATOR; and &VIDIOC-S-MODULATOR; ioctl. Note that
-<constant>VIDIOC_S_MODULATOR</constant> does not switch the current
-modulator, when there is more than one at all. The modulator is solely
-determined by the current video output. Drivers must support both
-ioctls and set the <constant>V4L2_CAP_MODULATOR</constant> flag in
-the &v4l2-capability; returned by the &VIDIOC-QUERYCAP; ioctl when the
-device has one or more modulators.</para>
- </section>
-
- <section>
- <title>Radio Frequency</title>
-
- <para>To get and set the tuner or modulator radio frequency
-applications use the &VIDIOC-G-FREQUENCY; and &VIDIOC-S-FREQUENCY;
-ioctl which both take a pointer to a &v4l2-frequency;. These ioctls
-are used for TV and radio devices alike. Drivers must support both
-ioctls when the tuner or modulator ioctls are supported, or
-when the device is a radio device.</para>
- </section>
- </section>
-
- <section id="standard">
- <title>Video Standards</title>
-
- <para>Video devices typically support one or more different video
-standards or variations of standards. Each video input and output may
-support another set of standards. This set is reported by the
-<structfield>std</structfield> field of &v4l2-input; and
-&v4l2-output; returned by the &VIDIOC-ENUMINPUT; and
-&VIDIOC-ENUMOUTPUT; ioctl, respectively.</para>
-
- <para>V4L2 defines one bit for each analog video standard
-currently in use worldwide, and sets aside bits for driver defined
-standards, ⪚ hybrid standards to watch NTSC video tapes on PAL TVs
-and vice versa. Applications can use the predefined bits to select a
-particular standard, although presenting the user a menu of supported
-standards is preferred. To enumerate and query the attributes of the
-supported standards applications use the &VIDIOC-ENUMSTD; ioctl.</para>
-
- <para>Many of the defined standards are actually just variations
-of a few major standards. The hardware may in fact not distinguish
-between them, or do so internal and switch automatically. Therefore
-enumerated standards also contain sets of one or more standard
-bits.</para>
-
- <para>Assume a hypothetic tuner capable of demodulating B/PAL,
-G/PAL and I/PAL signals. The first enumerated standard is a set of B
-and G/PAL, switched automatically depending on the selected radio
-frequency in UHF or VHF band. Enumeration gives a "PAL-B/G" or "PAL-I"
-choice. Similar a Composite input may collapse standards, enumerating
-"PAL-B/G/H/I", "NTSC-M" and "SECAM-D/K".<footnote>
- <para>Some users are already confused by technical terms PAL,
-NTSC and SECAM. There is no point asking them to distinguish between
-B, G, D, or K when the software or hardware can do that
-automatically.</para>
- </footnote></para>
-
- <para>To query and select the standard used by the current video
-input or output applications call the &VIDIOC-G-STD; and
-&VIDIOC-S-STD; ioctl, respectively. The <emphasis>received</emphasis>
-standard can be sensed with the &VIDIOC-QUERYSTD; ioctl. Note parameter of all these ioctls is a pointer to a &v4l2-std-id; type (a standard set), <emphasis>not</emphasis> an index into the standard enumeration.<footnote>
- <para>An alternative to the current scheme is to use pointers
-to indices as arguments of <constant>VIDIOC_G_STD</constant> and
-<constant>VIDIOC_S_STD</constant>, the &v4l2-input; and
-&v4l2-output; <structfield>std</structfield> field would be a set of
-indices like <structfield>audioset</structfield>.</para>
- <para>Indices are consistent with the rest of the API
-and identify the standard unambiguously. In the present scheme of
-things an enumerated standard is looked up by &v4l2-std-id;. Now the
-standards supported by the inputs of a device can overlap. Just
-assume the tuner and composite input in the example above both
-exist on a device. An enumeration of "PAL-B/G", "PAL-H/I" suggests
-a choice which does not exist. We cannot merge or omit sets, because
-applications would be unable to find the standards reported by
-<constant>VIDIOC_G_STD</constant>. That leaves separate enumerations
-for each input. Also selecting a standard by &v4l2-std-id; can be
-ambiguous. Advantage of this method is that applications need not
-identify the standard indirectly, after enumerating.</para><para>So in
-summary, the lookup itself is unavoidable. The difference is only
-whether the lookup is necessary to find an enumerated standard or to
-switch to a standard by &v4l2-std-id;.</para>
- </footnote> Drivers must implement all video standard ioctls
-when the device has one or more video inputs or outputs.</para>
-
- <para>Special rules apply to USB cameras where the notion of video
-standards makes little sense. More generally any capture device,
-output devices accordingly, which is <itemizedlist>
- <listitem>
- <para>incapable of capturing fields or frames at the nominal
-rate of the video standard, or</para>
- </listitem>
- <listitem>
- <para>where <link linkend="buffer">timestamps</link> refer
-to the instant the field or frame was received by the driver, not the
-capture time, or</para>
- </listitem>
- <listitem>
- <para>where <link linkend="buffer">sequence numbers</link>
-refer to the frames received by the driver, not the captured
-frames.</para>
- </listitem>
- </itemizedlist> Here the driver shall set the
-<structfield>std</structfield> field of &v4l2-input; and &v4l2-output;
-to zero, the <constant>VIDIOC_G_STD</constant>,
-<constant>VIDIOC_S_STD</constant>,
-<constant>VIDIOC_QUERYSTD</constant> and
-<constant>VIDIOC_ENUMSTD</constant> ioctls shall return the
-&EINVAL;.<footnote>
- <para>See <xref linkend="buffer" /> for a rationale. Probably
-even USB cameras follow some well known video standard. It might have
-been better to explicitly indicate elsewhere if a device cannot live
-up to normal expectations, instead of this exception.</para>
- </footnote></para>
-
- <example>
- <title>Information about the current video standard</title>
-
- <programlisting>
-&v4l2-std-id; std_id;
-&v4l2-standard; standard;
-
-if (-1 == ioctl (fd, &VIDIOC-G-STD;, &std_id)) {
- /* Note when VIDIOC_ENUMSTD always returns EINVAL this
- is no video device or it falls under the USB exception,
- and VIDIOC_G_STD returning EINVAL is no error. */
-
- perror ("VIDIOC_G_STD");
- exit (EXIT_FAILURE);
-}
-
-memset (&standard, 0, sizeof (standard));
-standard.index = 0;
-
-while (0 == ioctl (fd, &VIDIOC-ENUMSTD;, &standard)) {
- if (standard.id & std_id) {
- printf ("Current video standard: %s\n", standard.name);
- exit (EXIT_SUCCESS);
- }
-
- standard.index++;
-}
-
-/* EINVAL indicates the end of the enumeration, which cannot be
- empty unless this device falls under the USB exception. */
-
-if (errno == EINVAL || standard.index == 0) {
- perror ("VIDIOC_ENUMSTD");
- exit (EXIT_FAILURE);
-}
- </programlisting>
- </example>
-
- <example>
- <title>Listing the video standards supported by the current
-input</title>
-
- <programlisting>
-&v4l2-input; input;
-&v4l2-standard; standard;
-
-memset (&input, 0, sizeof (input));
-
-if (-1 == ioctl (fd, &VIDIOC-G-INPUT;, &input.index)) {
- perror ("VIDIOC_G_INPUT");
- exit (EXIT_FAILURE);
-}
-
-if (-1 == ioctl (fd, &VIDIOC-ENUMINPUT;, &input)) {
- perror ("VIDIOC_ENUM_INPUT");
- exit (EXIT_FAILURE);
-}
-
-printf ("Current input %s supports:\n", input.name);
-
-memset (&standard, 0, sizeof (standard));
-standard.index = 0;
-
-while (0 == ioctl (fd, &VIDIOC-ENUMSTD;, &standard)) {
- if (standard.id & input.std)
- printf ("%s\n", standard.name);
-
- standard.index++;
-}
-
-/* EINVAL indicates the end of the enumeration, which cannot be
- empty unless this device falls under the USB exception. */
-
-if (errno != EINVAL || standard.index == 0) {
- perror ("VIDIOC_ENUMSTD");
- exit (EXIT_FAILURE);
-}
- </programlisting>
- </example>
-
- <example>
- <title>Selecting a new video standard</title>
-
- <programlisting>
-&v4l2-input; input;
-&v4l2-std-id; std_id;
-
-memset (&input, 0, sizeof (input));
-
-if (-1 == ioctl (fd, &VIDIOC-G-INPUT;, &input.index)) {
- perror ("VIDIOC_G_INPUT");
- exit (EXIT_FAILURE);
-}
-
-if (-1 == ioctl (fd, &VIDIOC-ENUMINPUT;, &input)) {
- perror ("VIDIOC_ENUM_INPUT");
- exit (EXIT_FAILURE);
-}
-
-if (0 == (input.std & V4L2_STD_PAL_BG)) {
- fprintf (stderr, "Oops. B/G PAL is not supported.\n");
- exit (EXIT_FAILURE);
-}
-
-/* Note this is also supposed to work when only B
- <emphasis>or</emphasis> G/PAL is supported. */
-
-std_id = V4L2_STD_PAL_BG;
-
-if (-1 == ioctl (fd, &VIDIOC-S-STD;, &std_id)) {
- perror ("VIDIOC_S_STD");
- exit (EXIT_FAILURE);
-}
- </programlisting>
- </example>
- <section id="dv-timings">
- <title>Digital Video (DV) Timings</title>
- <para>
- The video standards discussed so far has been dealing with Analog TV and the
-corresponding video timings. Today there are many more different hardware interfaces
-such as High Definition TV interfaces (HDMI), VGA, DVI connectors etc., that carry
-video signals and there is a need to extend the API to select the video timings
-for these interfaces. Since it is not possible to extend the &v4l2-std-id; due to
-the limited bits available, a new set of IOCTLs is added to set/get video timings at
-the input and output: </para><itemizedlist>
- <listitem>
- <para>DV Presets: Digital Video (DV) presets. These are IDs representing a
-video timing at the input/output. Presets are pre-defined timings implemented
-by the hardware according to video standards. A __u32 data type is used to represent
-a preset unlike the bit mask that is used in &v4l2-std-id; allowing future extensions
-to support as many different presets as needed.</para>
- </listitem>
- <listitem>
- <para>Custom DV Timings: This will allow applications to define more detailed
-custom video timings for the interface. This includes parameters such as width, height,
-polarities, frontporch, backporch etc.
- </para>
- </listitem>
- </itemizedlist>
- <para>To enumerate and query the attributes of DV presets supported by a device,
-applications use the &VIDIOC-ENUM-DV-PRESETS; ioctl. To get the current DV preset,
-applications use the &VIDIOC-G-DV-PRESET; ioctl and to set a preset they use the
-&VIDIOC-S-DV-PRESET; ioctl.</para>
- <para>To set custom DV timings for the device, applications use the
-&VIDIOC-S-DV-TIMINGS; ioctl and to get current custom DV timings they use the
-&VIDIOC-G-DV-TIMINGS; ioctl.</para>
- <para>Applications can make use of the <xref linkend="input-capabilities" /> and
-<xref linkend="output-capabilities"/> flags to decide what ioctls are available to set the
-video timings for the device.</para>
- </section>
- </section>
-
- &sub-controls;
-
- <section id="format">
- <title>Data Formats</title>
-
- <section>
- <title>Data Format Negotiation</title>
-
- <para>Different devices exchange different kinds of data with
-applications, for example video images, raw or sliced VBI data, RDS
-datagrams. Even within one kind many different formats are possible,
-in particular an abundance of image formats. Although drivers must
-provide a default and the selection persists across closing and
-reopening a device, applications should always negotiate a data format
-before engaging in data exchange. Negotiation means the application
-asks for a particular format and the driver selects and reports the
-best the hardware can do to satisfy the request. Of course
-applications can also just query the current selection.</para>
-
- <para>A single mechanism exists to negotiate all data formats
-using the aggregate &v4l2-format; and the &VIDIOC-G-FMT; and
-&VIDIOC-S-FMT; ioctls. Additionally the &VIDIOC-TRY-FMT; ioctl can be
-used to examine what the hardware <emphasis>could</emphasis> do,
-without actually selecting a new data format. The data formats
-supported by the V4L2 API are covered in the respective device section
-in <xref linkend="devices" />. For a closer look at image formats see
-<xref linkend="pixfmt" />.</para>
-
- <para>The <constant>VIDIOC_S_FMT</constant> ioctl is a major
-turning-point in the initialization sequence. Prior to this point
-multiple panel applications can access the same device concurrently to
-select the current input, change controls or modify other properties.
-The first <constant>VIDIOC_S_FMT</constant> assigns a logical stream
-(video data, VBI data etc.) exclusively to one file descriptor.</para>
-
- <para>Exclusive means no other application, more precisely no
-other file descriptor, can grab this stream or change device
-properties inconsistent with the negotiated parameters. A video
-standard change for example, when the new standard uses a different
-number of scan lines, can invalidate the selected image format.
-Therefore only the file descriptor owning the stream can make
-invalidating changes. Accordingly multiple file descriptors which
-grabbed different logical streams prevent each other from interfering
-with their settings. When for example video overlay is about to start
-or already in progress, simultaneous video capturing may be restricted
-to the same cropping and image size.</para>
-
- <para>When applications omit the
-<constant>VIDIOC_S_FMT</constant> ioctl its locking side effects are
-implied by the next step, the selection of an I/O method with the
-&VIDIOC-REQBUFS; ioctl or implicit with the first &func-read; or
-&func-write; call.</para>
-
- <para>Generally only one logical stream can be assigned to a
-file descriptor, the exception being drivers permitting simultaneous
-video capturing and overlay using the same file descriptor for
-compatibility with V4L and earlier versions of V4L2. Switching the
-logical stream or returning into "panel mode" is possible by closing
-and reopening the device. Drivers <emphasis>may</emphasis> support a
-switch using <constant>VIDIOC_S_FMT</constant>.</para>
-
- <para>All drivers exchanging data with
-applications must support the <constant>VIDIOC_G_FMT</constant> and
-<constant>VIDIOC_S_FMT</constant> ioctl. Implementation of the
-<constant>VIDIOC_TRY_FMT</constant> is highly recommended but
-optional.</para>
- </section>
-
- <section>
- <title>Image Format Enumeration</title>
-
- <para>Apart of the generic format negotiation functions
-a special ioctl to enumerate all image formats supported by video
-capture, overlay or output devices is available.<footnote>
- <para>Enumerating formats an application has no a-priori
-knowledge of (otherwise it could explicitly ask for them and need not
-enumerate) seems useless, but there are applications serving as proxy
-between drivers and the actual video applications for which this is
-useful.</para>
- </footnote></para>
-
- <para>The &VIDIOC-ENUM-FMT; ioctl must be supported
-by all drivers exchanging image data with applications.</para>
-
- <important>
- <para>Drivers are not supposed to convert image formats in
-kernel space. They must enumerate only formats directly supported by
-the hardware. If necessary driver writers should publish an example
-conversion routine or library for integration into applications.</para>
- </important>
- </section>
- </section>
-
- &sub-planar-apis;
-
- <section id="crop">
- <title>Image Cropping, Insertion and Scaling</title>
-
- <para>Some video capture devices can sample a subsection of the
-picture and shrink or enlarge it to an image of arbitrary size. We
-call these abilities cropping and scaling. Some video output devices
-can scale an image up or down and insert it at an arbitrary scan line
-and horizontal offset into a video signal.</para>
-
- <para>Applications can use the following API to select an area in
-the video signal, query the default area and the hardware limits.
-<emphasis>Despite their name, the &VIDIOC-CROPCAP;, &VIDIOC-G-CROP;
-and &VIDIOC-S-CROP; ioctls apply to input as well as output
-devices.</emphasis></para>
-
- <para>Scaling requires a source and a target. On a video capture
-or overlay device the source is the video signal, and the cropping
-ioctls determine the area actually sampled. The target are images
-read by the application or overlaid onto the graphics screen. Their
-size (and position for an overlay) is negotiated with the
-&VIDIOC-G-FMT; and &VIDIOC-S-FMT; ioctls.</para>
-
- <para>On a video output device the source are the images passed in
-by the application, and their size is again negotiated with the
-<constant>VIDIOC_G/S_FMT</constant> ioctls, or may be encoded in a
-compressed video stream. The target is the video signal, and the
-cropping ioctls determine the area where the images are
-inserted.</para>
-
- <para>Source and target rectangles are defined even if the device
-does not support scaling or the <constant>VIDIOC_G/S_CROP</constant>
-ioctls. Their size (and position where applicable) will be fixed in
-this case. <emphasis>All capture and output device must support the
-<constant>VIDIOC_CROPCAP</constant> ioctl such that applications can
-determine if scaling takes place.</emphasis></para>
-
- <section>
- <title>Cropping Structures</title>
-
- <figure id="crop-scale">
- <title>Image Cropping, Insertion and Scaling</title>
- <mediaobject>
- <imageobject>
- <imagedata fileref="crop.pdf" format="PS" />
- </imageobject>
- <imageobject>
- <imagedata fileref="crop.gif" format="GIF" />
- </imageobject>
- <textobject>
- <phrase>The cropping, insertion and scaling process</phrase>
- </textobject>
- </mediaobject>
- </figure>
-
- <para>For capture devices the coordinates of the top left
-corner, width and height of the area which can be sampled is given by
-the <structfield>bounds</structfield> substructure of the
-&v4l2-cropcap; returned by the <constant>VIDIOC_CROPCAP</constant>
-ioctl. To support a wide range of hardware this specification does not
-define an origin or units. However by convention drivers should
-horizontally count unscaled samples relative to 0H (the leading edge
-of the horizontal sync pulse, see <xref linkend="vbi-hsync" />).
-Vertically ITU-R line
-numbers of the first field (<xref linkend="vbi-525" />, <xref
-linkend="vbi-625" />), multiplied by two if the driver can capture both
-fields.</para>
-
- <para>The top left corner, width and height of the source
-rectangle, that is the area actually sampled, is given by &v4l2-crop;
-using the same coordinate system as &v4l2-cropcap;. Applications can
-use the <constant>VIDIOC_G_CROP</constant> and
-<constant>VIDIOC_S_CROP</constant> ioctls to get and set this
-rectangle. It must lie completely within the capture boundaries and
-the driver may further adjust the requested size and/or position
-according to hardware limitations.</para>
-
- <para>Each capture device has a default source rectangle, given
-by the <structfield>defrect</structfield> substructure of
-&v4l2-cropcap;. The center of this rectangle shall align with the
-center of the active picture area of the video signal, and cover what
-the driver writer considers the complete picture. Drivers shall reset
-the source rectangle to the default when the driver is first loaded,
-but not later.</para>
-
- <para>For output devices these structures and ioctls are used
-accordingly, defining the <emphasis>target</emphasis> rectangle where
-the images will be inserted into the video signal.</para>
-
- </section>
-
- <section>
- <title>Scaling Adjustments</title>
-
- <para>Video hardware can have various cropping, insertion and
-scaling limitations. It may only scale up or down, support only
-discrete scaling factors, or have different scaling abilities in
-horizontal and vertical direction. Also it may not support scaling at
-all. At the same time the &v4l2-crop; rectangle may have to be
-aligned, and both the source and target rectangles may have arbitrary
-upper and lower size limits. In particular the maximum
-<structfield>width</structfield> and <structfield>height</structfield>
-in &v4l2-crop; may be smaller than the
-&v4l2-cropcap;.<structfield>bounds</structfield> area. Therefore, as
-usual, drivers are expected to adjust the requested parameters and
-return the actual values selected.</para>
-
- <para>Applications can change the source or the target rectangle
-first, as they may prefer a particular image size or a certain area in
-the video signal. If the driver has to adjust both to satisfy hardware
-limitations, the last requested rectangle shall take priority, and the
-driver should preferably adjust the opposite one. The &VIDIOC-TRY-FMT;
-ioctl however shall not change the driver state and therefore only
-adjust the requested rectangle.</para>
-
- <para>Suppose scaling on a video capture device is restricted to
-a factor 1:1 or 2:1 in either direction and the target image size must
-be a multiple of 16 × 16 pixels. The source cropping
-rectangle is set to defaults, which are also the upper limit in this
-example, of 640 × 400 pixels at offset 0, 0. An
-application requests an image size of 300 × 225
-pixels, assuming video will be scaled down from the "full picture"
-accordingly. The driver sets the image size to the closest possible
-values 304 × 224, then chooses the cropping rectangle
-closest to the requested size, that is 608 × 224
-(224 × 2:1 would exceed the limit 400). The offset
-0, 0 is still valid, thus unmodified. Given the default cropping
-rectangle reported by <constant>VIDIOC_CROPCAP</constant> the
-application can easily propose another offset to center the cropping
-rectangle.</para>
-
- <para>Now the application may insist on covering an area using a
-picture aspect ratio closer to the original request, so it asks for a
-cropping rectangle of 608 × 456 pixels. The present
-scaling factors limit cropping to 640 × 384, so the
-driver returns the cropping size 608 × 384 and adjusts
-the image size to closest possible 304 × 192.</para>
-
- </section>
-
- <section>
- <title>Examples</title>
-
- <para>Source and target rectangles shall remain unchanged across
-closing and reopening a device, such that piping data into or out of a
-device will work without special preparations. More advanced
-applications should ensure the parameters are suitable before starting
-I/O.</para>
-
- <example>
- <title>Resetting the cropping parameters</title>
-
- <para>(A video capture device is assumed; change
-<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant> for other
-devices.)</para>
-
- <programlisting>
-&v4l2-cropcap; cropcap;
-&v4l2-crop; crop;
-
-memset (&cropcap, 0, sizeof (cropcap));
-cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
-if (-1 == ioctl (fd, &VIDIOC-CROPCAP;, &cropcap)) {
- perror ("VIDIOC_CROPCAP");
- exit (EXIT_FAILURE);
-}
-
-memset (&crop, 0, sizeof (crop));
-crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-crop.c = cropcap.defrect;
-
-/* Ignore if cropping is not supported (EINVAL). */
-
-if (-1 == ioctl (fd, &VIDIOC-S-CROP;, &crop)
- && errno != EINVAL) {
- perror ("VIDIOC_S_CROP");
- exit (EXIT_FAILURE);
-}
- </programlisting>
- </example>
-
- <example>
- <title>Simple downscaling</title>
-
- <para>(A video capture device is assumed.)</para>
-
- <programlisting>
-&v4l2-cropcap; cropcap;
-&v4l2-format; format;
-
-reset_cropping_parameters ();
-
-/* Scale down to 1/4 size of full picture. */
-
-memset (&format, 0, sizeof (format)); /* defaults */
-
-format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
-format.fmt.pix.width = cropcap.defrect.width >> 1;
-format.fmt.pix.height = cropcap.defrect.height >> 1;
-format.fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
-
-if (-1 == ioctl (fd, &VIDIOC-S-FMT;, &format)) {
- perror ("VIDIOC_S_FORMAT");
- exit (EXIT_FAILURE);
-}
-
-/* We could check the actual image size now, the actual scaling factor
- or if the driver can scale at all. */
- </programlisting>
- </example>
-
- <example>
- <title>Selecting an output area</title>
-
- <programlisting>
-&v4l2-cropcap; cropcap;
-&v4l2-crop; crop;
-
-memset (&cropcap, 0, sizeof (cropcap));
-cropcap.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
-
-if (-1 == ioctl (fd, VIDIOC_CROPCAP;, &cropcap)) {
- perror ("VIDIOC_CROPCAP");
- exit (EXIT_FAILURE);
-}
-
-memset (&crop, 0, sizeof (crop));
-
-crop.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
-crop.c = cropcap.defrect;
-
-/* Scale the width and height to 50 % of their original size
- and center the output. */
-
-crop.c.width /= 2;
-crop.c.height /= 2;
-crop.c.left += crop.c.width / 2;
-crop.c.top += crop.c.height / 2;
-
-/* Ignore if cropping is not supported (EINVAL). */
-
-if (-1 == ioctl (fd, VIDIOC_S_CROP, &crop)
- && errno != EINVAL) {
- perror ("VIDIOC_S_CROP");
- exit (EXIT_FAILURE);
-}
-</programlisting>
- </example>
-
- <example>
- <title>Current scaling factor and pixel aspect</title>
-
- <para>(A video capture device is assumed.)</para>
-
- <programlisting>
-&v4l2-cropcap; cropcap;
-&v4l2-crop; crop;
-&v4l2-format; format;
-double hscale, vscale;
-double aspect;
-int dwidth, dheight;
-
-memset (&cropcap, 0, sizeof (cropcap));
-cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
-if (-1 == ioctl (fd, &VIDIOC-CROPCAP;, &cropcap)) {
- perror ("VIDIOC_CROPCAP");
- exit (EXIT_FAILURE);
-}
-
-memset (&crop, 0, sizeof (crop));
-crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
-if (-1 == ioctl (fd, &VIDIOC-G-CROP;, &crop)) {
- if (errno != EINVAL) {
- perror ("VIDIOC_G_CROP");
- exit (EXIT_FAILURE);
- }
-
- /* Cropping not supported. */
- crop.c = cropcap.defrect;
-}
-
-memset (&format, 0, sizeof (format));
-format.fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
-if (-1 == ioctl (fd, &VIDIOC-G-FMT;, &format)) {
- perror ("VIDIOC_G_FMT");
- exit (EXIT_FAILURE);
-}
-
-/* The scaling applied by the driver. */
-
-hscale = format.fmt.pix.width / (double) crop.c.width;
-vscale = format.fmt.pix.height / (double) crop.c.height;
-
-aspect = cropcap.pixelaspect.numerator /
- (double) cropcap.pixelaspect.denominator;
-aspect = aspect * hscale / vscale;
-
-/* Devices following ITU-R BT.601 do not capture
- square pixels. For playback on a computer monitor
- we should scale the images to this size. */
-
-dwidth = format.fmt.pix.width / aspect;
-dheight = format.fmt.pix.height;
- </programlisting>
- </example>
- </section>
- </section>
-
- <section id="streaming-par">
- <title>Streaming Parameters</title>
-
- <para>Streaming parameters are intended to optimize the video
-capture process as well as I/O. Presently applications can request a
-high quality capture mode with the &VIDIOC-S-PARM; ioctl.</para>
-
- <para>The current video standard determines a nominal number of
-frames per second. If less than this number of frames is to be
-captured or output, applications can request frame skipping or
-duplicating on the driver side. This is especially useful when using
-the &func-read; or &func-write;, which are not augmented by timestamps
-or sequence counters, and to avoid unnecessary data copying.</para>
-
- <para>Finally these ioctls can be used to determine the number of
-buffers used internally by a driver in read/write mode. For
-implications see the section discussing the &func-read;
-function.</para>
-
- <para>To get and set the streaming parameters applications call
-the &VIDIOC-G-PARM; and &VIDIOC-S-PARM; ioctl, respectively. They take
-a pointer to a &v4l2-streamparm;, which contains a union holding
-separate parameters for input and output devices.</para>
-
- <para>These ioctls are optional, drivers need not implement
-them. If so, they return the &EINVAL;.</para>
- </section>
-
- <!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
- -->
diff --git a/Documentation/DocBook/v4l/compat.xml b/Documentation/DocBook/v4l/compat.xml
deleted file mode 100644
index 9f7cd4f..0000000
--- a/Documentation/DocBook/v4l/compat.xml
+++ /dev/null
@@ -1,2500 +0,0 @@
- <title>Changes</title>
-
- <para>The following chapters document the evolution of the V4L2 API,
-errata or extensions. They are also intended to help application and
-driver writers to port or update their code.</para>
-
- <section id="diff-v4l">
- <title>Differences between V4L and V4L2</title>
-
- <para>The Video For Linux API was first introduced in Linux 2.1 to
-unify and replace various TV and radio device related interfaces,
-developed independently by driver writers in prior years. Starting
-with Linux 2.5 the much improved V4L2 API replaces the V4L API,
-although existing drivers will continue to support V4L applications in
-the future, either directly or through the V4L2 compatibility layer in
-the <filename>videodev</filename> kernel module translating ioctls on
-the fly. For a transition period not all drivers will support the V4L2
-API.</para>
-
- <section>
- <title>Opening and Closing Devices</title>
-
- <para>For compatibility reasons the character device file names
-recommended for V4L2 video capture, overlay, radio and raw
-vbi capture devices did not change from those used by V4L. They are
-listed in <xref linkend="devices" /> and below in <xref
- linkend="v4l-dev" />.</para>
-
- <para>The teletext devices (minor range 192-223) have been removed in
-V4L2 and no longer exist. There is no hardware available anymore for handling
-pure teletext. Instead raw or sliced VBI is used.</para>
-
- <para>The V4L <filename>videodev</filename> module automatically
-assigns minor numbers to drivers in load order, depending on the
-registered device type. We recommend that V4L2 drivers by default
-register devices with the same numbers, but the system administrator
-can assign arbitrary minor numbers using driver module options. The
-major device number remains 81.</para>
-
- <table id="v4l-dev">
- <title>V4L Device Types, Names and Numbers</title>
- <tgroup cols="3">
- <thead>
- <row>
- <entry>Device Type</entry>
- <entry>File Name</entry>
- <entry>Minor Numbers</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry>Video capture and overlay</entry>
- <entry><para><filename>/dev/video</filename> and
-<filename>/dev/bttv0</filename><footnote> <para>According to
-Documentation/devices.txt these should be symbolic links to
-<filename>/dev/video0</filename>. Note the original bttv interface is
-not compatible with V4L or V4L2.</para> </footnote>,
-<filename>/dev/video0</filename> to
-<filename>/dev/video63</filename></para></entry>
- <entry>0-63</entry>
- </row>
- <row>
- <entry>Radio receiver</entry>
- <entry><para><filename>/dev/radio</filename><footnote>
- <para>According to
-<filename>Documentation/devices.txt</filename> a symbolic link to
-<filename>/dev/radio0</filename>.</para>
- </footnote>, <filename>/dev/radio0</filename> to
-<filename>/dev/radio63</filename></para></entry>
- <entry>64-127</entry>
- </row>
- <row>
- <entry>Raw VBI capture</entry>
- <entry><para><filename>/dev/vbi</filename>,
-<filename>/dev/vbi0</filename> to
-<filename>/dev/vbi31</filename></para></entry>
- <entry>224-255</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <para>V4L prohibits (or used to prohibit) multiple opens of a
-device file. V4L2 drivers <emphasis>may</emphasis> support multiple
-opens, see <xref linkend="open" /> for details and consequences.</para>
-
- <para>V4L drivers respond to V4L2 ioctls with an &EINVAL;. The
-compatibility layer in the V4L2 <filename>videodev</filename> module
-can translate V4L ioctl requests to their V4L2 counterpart, however a
-V4L2 driver usually needs more preparation to become fully V4L
-compatible. This is covered in more detail in <xref
- linkend="driver" />.</para>
- </section>
-
- <section>
- <title>Querying Capabilities</title>
-
- <para>The V4L <constant>VIDIOCGCAP</constant> ioctl is
-equivalent to V4L2's &VIDIOC-QUERYCAP;.</para>
-
- <para>The <structfield>name</structfield> field in struct
-<structname>video_capability</structname> became
-<structfield>card</structfield> in &v4l2-capability;,
-<structfield>type</structfield> was replaced by
-<structfield>capabilities</structfield>. Note V4L2 does not
-distinguish between device types like this, better think of basic
-video input, video output and radio devices supporting a set of
-related functions like video capturing, video overlay and VBI
-capturing. See <xref linkend="open" /> for an
-introduction.<informaltable>
- <tgroup cols="3">
- <thead>
- <row>
- <entry>struct
-<structname>video_capability</structname>
-<structfield>type</structfield></entry>
- <entry>&v4l2-capability;
-<structfield>capabilities</structfield> flags</entry>
- <entry>Purpose</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry><constant>VID_TYPE_CAPTURE</constant></entry>
- <entry><constant>V4L2_CAP_VIDEO_CAPTURE</constant></entry>
- <entry>The <link linkend="capture">video
-capture</link> interface is supported.</entry>
- </row>
- <row>
- <entry><constant>VID_TYPE_TUNER</constant></entry>
- <entry><constant>V4L2_CAP_TUNER</constant></entry>
- <entry>The device has a <link linkend="tuner">tuner or
-modulator</link>.</entry>
- </row>
- <row>
- <entry><constant>VID_TYPE_TELETEXT</constant></entry>
- <entry><constant>V4L2_CAP_VBI_CAPTURE</constant></entry>
- <entry>The <link linkend="raw-vbi">raw VBI
-capture</link> interface is supported.</entry>
- </row>
- <row>
- <entry><constant>VID_TYPE_OVERLAY</constant></entry>
- <entry><constant>V4L2_CAP_VIDEO_OVERLAY</constant></entry>
- <entry>The <link linkend="overlay">video
-overlay</link> interface is supported.</entry>
- </row>
- <row>
- <entry><constant>VID_TYPE_CHROMAKEY</constant></entry>
- <entry><constant>V4L2_FBUF_CAP_CHROMAKEY</constant> in
-field <structfield>capability</structfield> of
-&v4l2-framebuffer;</entry>
- <entry>Whether chromakey overlay is supported. For
-more information on overlay see
-<xref linkend="overlay" />.</entry>
- </row>
- <row>
- <entry><constant>VID_TYPE_CLIPPING</constant></entry>
- <entry><constant>V4L2_FBUF_CAP_LIST_CLIPPING</constant>
-and <constant>V4L2_FBUF_CAP_BITMAP_CLIPPING</constant> in field
-<structfield>capability</structfield> of &v4l2-framebuffer;</entry>
- <entry>Whether clipping the overlaid image is
-supported, see <xref linkend="overlay" />.</entry>
- </row>
- <row>
- <entry><constant>VID_TYPE_FRAMERAM</constant></entry>
- <entry><constant>V4L2_FBUF_CAP_EXTERNOVERLAY</constant>
-<emphasis>not set</emphasis> in field
-<structfield>capability</structfield> of &v4l2-framebuffer;</entry>
- <entry>Whether overlay overwrites frame buffer memory,
-see <xref linkend="overlay" />.</entry>
- </row>
- <row>
- <entry><constant>VID_TYPE_SCALES</constant></entry>
- <entry><constant>-</constant></entry>
- <entry>This flag indicates if the hardware can scale
-images. The V4L2 API implies the scale factor by setting the cropping
-dimensions and image size with the &VIDIOC-S-CROP; and &VIDIOC-S-FMT;
-ioctl, respectively. The driver returns the closest sizes possible.
-For more information on cropping and scaling see <xref
- linkend="crop" />.</entry>
- </row>
- <row>
- <entry><constant>VID_TYPE_MONOCHROME</constant></entry>
- <entry><constant>-</constant></entry>
- <entry>Applications can enumerate the supported image
-formats with the &VIDIOC-ENUM-FMT; ioctl to determine if the device
-supports grey scale capturing only. For more information on image
-formats see <xref linkend="pixfmt" />.</entry>
- </row>
- <row>
- <entry><constant>VID_TYPE_SUBCAPTURE</constant></entry>
- <entry><constant>-</constant></entry>
- <entry>Applications can call the &VIDIOC-G-CROP; ioctl
-to determine if the device supports capturing a subsection of the full
-picture ("cropping" in V4L2). If not, the ioctl returns the &EINVAL;.
-For more information on cropping and scaling see <xref
- linkend="crop" />.</entry>
- </row>
- <row>
- <entry><constant>VID_TYPE_MPEG_DECODER</constant></entry>
- <entry><constant>-</constant></entry>
- <entry>Applications can enumerate the supported image
-formats with the &VIDIOC-ENUM-FMT; ioctl to determine if the device
-supports MPEG streams.</entry>
- </row>
- <row>
- <entry><constant>VID_TYPE_MPEG_ENCODER</constant></entry>
- <entry><constant>-</constant></entry>
- <entry>See above.</entry>
- </row>
- <row>
- <entry><constant>VID_TYPE_MJPEG_DECODER</constant></entry>
- <entry><constant>-</constant></entry>
- <entry>See above.</entry>
- </row>
- <row>
- <entry><constant>VID_TYPE_MJPEG_ENCODER</constant></entry>
- <entry><constant>-</constant></entry>
- <entry>See above.</entry>
- </row>
- </tbody>
- </tgroup>
- </informaltable></para>
-
- <para>The <structfield>audios</structfield> field was replaced
-by <structfield>capabilities</structfield> flag
-<constant>V4L2_CAP_AUDIO</constant>, indicating
-<emphasis>if</emphasis> the device has any audio inputs or outputs. To
-determine their number applications can enumerate audio inputs with
-the &VIDIOC-G-AUDIO; ioctl. The audio ioctls are described in <xref
- linkend="audio" />.</para>
-
- <para>The <structfield>maxwidth</structfield>,
-<structfield>maxheight</structfield>,
-<structfield>minwidth</structfield> and
-<structfield>minheight</structfield> fields were removed. Calling the
-&VIDIOC-S-FMT; or &VIDIOC-TRY-FMT; ioctl with the desired dimensions
-returns the closest size possible, taking into account the current
-video standard, cropping and scaling limitations.</para>
- </section>
-
- <section>
- <title>Video Sources</title>
-
- <para>V4L provides the <constant>VIDIOCGCHAN</constant> and
-<constant>VIDIOCSCHAN</constant> ioctl using struct
-<structname>video_channel</structname> to enumerate
-the video inputs of a V4L device. The equivalent V4L2 ioctls
-are &VIDIOC-ENUMINPUT;, &VIDIOC-G-INPUT; and &VIDIOC-S-INPUT;
-using &v4l2-input; as discussed in <xref linkend="video" />.</para>
-
- <para>The <structfield>channel</structfield> field counting
-inputs was renamed to <structfield>index</structfield>, the video
-input types were renamed as follows: <informaltable>
- <tgroup cols="2">
- <thead>
- <row>
- <entry>struct <structname>video_channel</structname>
-<structfield>type</structfield></entry>
- <entry>&v4l2-input;
-<structfield>type</structfield></entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry><constant>VIDEO_TYPE_TV</constant></entry>
- <entry><constant>V4L2_INPUT_TYPE_TUNER</constant></entry>
- </row>
- <row>
- <entry><constant>VIDEO_TYPE_CAMERA</constant></entry>
- <entry><constant>V4L2_INPUT_TYPE_CAMERA</constant></entry>
- </row>
- </tbody>
- </tgroup>
- </informaltable></para>
-
- <para>Unlike the <structfield>tuners</structfield> field
-expressing the number of tuners of this input, V4L2 assumes each video
-input is connected to at most one tuner. However a tuner can have more
-than one input, &ie; RF connectors, and a device can have multiple
-tuners. The index number of the tuner associated with the input, if
-any, is stored in field <structfield>tuner</structfield> of
-&v4l2-input;. Enumeration of tuners is discussed in <xref
- linkend="tuner" />.</para>
-
- <para>The redundant <constant>VIDEO_VC_TUNER</constant> flag was
-dropped. Video inputs associated with a tuner are of type
-<constant>V4L2_INPUT_TYPE_TUNER</constant>. The
-<constant>VIDEO_VC_AUDIO</constant> flag was replaced by the
-<structfield>audioset</structfield> field. V4L2 considers devices with
-up to 32 audio inputs. Each set bit in the
-<structfield>audioset</structfield> field represents one audio input
-this video input combines with. For information about audio inputs and
-how to switch between them see <xref linkend="audio" />.</para>
-
- <para>The <structfield>norm</structfield> field describing the
-supported video standards was replaced by
-<structfield>std</structfield>. The V4L specification mentions a flag
-<constant>VIDEO_VC_NORM</constant> indicating whether the standard can
-be changed. This flag was a later addition together with the
-<structfield>norm</structfield> field and has been removed in the
-meantime. V4L2 has a similar, albeit more comprehensive approach
-to video standards, see <xref linkend="standard" /> for more
-information.</para>
- </section>
-
- <section>
- <title>Tuning</title>
-
- <para>The V4L <constant>VIDIOCGTUNER</constant> and
-<constant>VIDIOCSTUNER</constant> ioctl and struct
-<structname>video_tuner</structname> can be used to enumerate the
-tuners of a V4L TV or radio device. The equivalent V4L2 ioctls are
-&VIDIOC-G-TUNER; and &VIDIOC-S-TUNER; using &v4l2-tuner;. Tuners are
-covered in <xref linkend="tuner" />.</para>
-
- <para>The <structfield>tuner</structfield> field counting tuners
-was renamed to <structfield>index</structfield>. The fields
-<structfield>name</structfield>, <structfield>rangelow</structfield>
-and <structfield>rangehigh</structfield> remained unchanged.</para>
-
- <para>The <constant>VIDEO_TUNER_PAL</constant>,
-<constant>VIDEO_TUNER_NTSC</constant> and
-<constant>VIDEO_TUNER_SECAM</constant> flags indicating the supported
-video standards were dropped. This information is now contained in the
-associated &v4l2-input;. No replacement exists for the
-<constant>VIDEO_TUNER_NORM</constant> flag indicating whether the
-video standard can be switched. The <structfield>mode</structfield>
-field to select a different video standard was replaced by a whole new
-set of ioctls and structures described in <xref linkend="standard" />.
-Due to its ubiquity it should be mentioned the BTTV driver supports
-several standards in addition to the regular
-<constant>VIDEO_MODE_PAL</constant> (0),
-<constant>VIDEO_MODE_NTSC</constant>,
-<constant>VIDEO_MODE_SECAM</constant> and
-<constant>VIDEO_MODE_AUTO</constant> (3). Namely N/PAL Argentina,
-M/PAL, N/PAL, and NTSC Japan with numbers 3-6 (sic).</para>
-
- <para>The <constant>VIDEO_TUNER_STEREO_ON</constant> flag
-indicating stereo reception became
-<constant>V4L2_TUNER_SUB_STEREO</constant> in field
-<structfield>rxsubchans</structfield>. This field also permits the
-detection of monaural and bilingual audio, see the definition of
-&v4l2-tuner; for details. Presently no replacement exists for the
-<constant>VIDEO_TUNER_RDS_ON</constant> and
-<constant>VIDEO_TUNER_MBS_ON</constant> flags.</para>
-
- <para> The <constant>VIDEO_TUNER_LOW</constant> flag was renamed
-to <constant>V4L2_TUNER_CAP_LOW</constant> in the &v4l2-tuner;
-<structfield>capability</structfield> field.</para>
-
- <para>The <constant>VIDIOCGFREQ</constant> and
-<constant>VIDIOCSFREQ</constant> ioctl to change the tuner frequency
-where renamed to &VIDIOC-G-FREQUENCY; and &VIDIOC-S-FREQUENCY;. They
-take a pointer to a &v4l2-frequency; instead of an unsigned long
-integer.</para>
- </section>
-
- <section id="v4l-image-properties">
- <title>Image Properties</title>
-
- <para>V4L2 has no equivalent of the
-<constant>VIDIOCGPICT</constant> and <constant>VIDIOCSPICT</constant>
-ioctl and struct <structname>video_picture</structname>. The following
-fields where replaced by V4L2 controls accessible with the
-&VIDIOC-QUERYCTRL;, &VIDIOC-G-CTRL; and &VIDIOC-S-CTRL; ioctls:<informaltable>
- <tgroup cols="2">
- <thead>
- <row>
- <entry>struct <structname>video_picture</structname></entry>
- <entry>V4L2 Control ID</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry><structfield>brightness</structfield></entry>
- <entry><constant>V4L2_CID_BRIGHTNESS</constant></entry>
- </row>
- <row>
- <entry><structfield>hue</structfield></entry>
- <entry><constant>V4L2_CID_HUE</constant></entry>
- </row>
- <row>
- <entry><structfield>colour</structfield></entry>
- <entry><constant>V4L2_CID_SATURATION</constant></entry>
- </row>
- <row>
- <entry><structfield>contrast</structfield></entry>
- <entry><constant>V4L2_CID_CONTRAST</constant></entry>
- </row>
- <row>
- <entry><structfield>whiteness</structfield></entry>
- <entry><constant>V4L2_CID_WHITENESS</constant></entry>
- </row>
- </tbody>
- </tgroup>
- </informaltable></para>
-
- <para>The V4L picture controls are assumed to range from 0 to
-65535 with no particular reset value. The V4L2 API permits arbitrary
-limits and defaults which can be queried with the &VIDIOC-QUERYCTRL;
-ioctl. For general information about controls see <xref
-linkend="control" />.</para>
-
- <para>The <structfield>depth</structfield> (average number of
-bits per pixel) of a video image is implied by the selected image
-format. V4L2 does not explicitely provide such information assuming
-applications recognizing the format are aware of the image depth and
-others need not know. The <structfield>palette</structfield> field
-moved into the &v4l2-pix-format;:<informaltable>
- <tgroup cols="2">
- <thead>
- <row>
- <entry>struct <structname>video_picture</structname>
-<structfield>palette</structfield></entry>
- <entry>&v4l2-pix-format;
-<structfield>pixfmt</structfield></entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry><constant>VIDEO_PALETTE_GREY</constant></entry>
- <entry><para><link
-linkend="V4L2-PIX-FMT-GREY"><constant>V4L2_PIX_FMT_GREY</constant></link></para></entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_HI240</constant></entry>
- <entry><para><link
-linkend="pixfmt-reserved"><constant>V4L2_PIX_FMT_HI240</constant></link><footnote>
- <para>This is a custom format used by the BTTV
-driver, not one of the V4L2 standard formats.</para>
- </footnote></para></entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_RGB565</constant></entry>
- <entry><para><link
-linkend="pixfmt-rgb"><constant>V4L2_PIX_FMT_RGB565</constant></link></para></entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_RGB555</constant></entry>
- <entry><para><link
-linkend="pixfmt-rgb"><constant>V4L2_PIX_FMT_RGB555</constant></link></para></entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_RGB24</constant></entry>
- <entry><para><link
-linkend="pixfmt-rgb"><constant>V4L2_PIX_FMT_BGR24</constant></link></para></entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_RGB32</constant></entry>
- <entry><para><link
-linkend="pixfmt-rgb"><constant>V4L2_PIX_FMT_BGR32</constant></link><footnote>
- <para>Presumably all V4L RGB formats are
-little-endian, although some drivers might interpret them according to machine endianess. V4L2 defines little-endian, big-endian and red/blue
-swapped variants. For details see <xref linkend="pixfmt-rgb" />.</para>
- </footnote></para></entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_YUV422</constant></entry>
- <entry><para><link
-linkend="V4L2-PIX-FMT-YUYV"><constant>V4L2_PIX_FMT_YUYV</constant></link></para></entry>
- </row>
- <row>
- <entry><para><constant>VIDEO_PALETTE_YUYV</constant><footnote>
- <para><constant>VIDEO_PALETTE_YUV422</constant>
-and <constant>VIDEO_PALETTE_YUYV</constant> are the same formats. Some
-V4L drivers respond to one, some to the other.</para>
- </footnote></para></entry>
- <entry><para><link
-linkend="V4L2-PIX-FMT-YUYV"><constant>V4L2_PIX_FMT_YUYV</constant></link></para></entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_UYVY</constant></entry>
- <entry><para><link
-linkend="V4L2-PIX-FMT-UYVY"><constant>V4L2_PIX_FMT_UYVY</constant></link></para></entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_YUV420</constant></entry>
- <entry>None</entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_YUV411</constant></entry>
- <entry><para><link
-linkend="V4L2-PIX-FMT-Y41P"><constant>V4L2_PIX_FMT_Y41P</constant></link><footnote>
- <para>Not to be confused with
-<constant>V4L2_PIX_FMT_YUV411P</constant>, which is a planar
-format.</para> </footnote></para></entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_RAW</constant></entry>
- <entry><para>None<footnote> <para>V4L explains this
-as: "RAW capture (BT848)"</para> </footnote></para></entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_YUV422P</constant></entry>
- <entry><para><link
-linkend="V4L2-PIX-FMT-YUV422P"><constant>V4L2_PIX_FMT_YUV422P</constant></link></para></entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_YUV411P</constant></entry>
- <entry><para><link
-linkend="V4L2-PIX-FMT-YUV411P"><constant>V4L2_PIX_FMT_YUV411P</constant></link><footnote>
- <para>Not to be confused with
-<constant>V4L2_PIX_FMT_Y41P</constant>, which is a packed
-format.</para> </footnote></para></entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_YUV420P</constant></entry>
- <entry><para><link
-linkend="V4L2-PIX-FMT-YVU420"><constant>V4L2_PIX_FMT_YVU420</constant></link></para></entry>
- </row>
- <row>
- <entry><constant>VIDEO_PALETTE_YUV410P</constant></entry>
- <entry><para><link
-linkend="V4L2-PIX-FMT-YVU410"><constant>V4L2_PIX_FMT_YVU410</constant></link></para></entry>
- </row>
- </tbody>
- </tgroup>
- </informaltable></para>
-
- <para>V4L2 image formats are defined in <xref
-linkend="pixfmt" />. The image format can be selected with the
-&VIDIOC-S-FMT; ioctl.</para>
- </section>
-
- <section>
- <title>Audio</title>
-
- <para>The <constant>VIDIOCGAUDIO</constant> and
-<constant>VIDIOCSAUDIO</constant> ioctl and struct
-<structname>video_audio</structname> are used to enumerate the
-audio inputs of a V4L device. The equivalent V4L2 ioctls are
-&VIDIOC-G-AUDIO; and &VIDIOC-S-AUDIO; using &v4l2-audio; as
-discussed in <xref linkend="audio" />.</para>
-
- <para>The <structfield>audio</structfield> "channel number"
-field counting audio inputs was renamed to
-<structfield>index</structfield>.</para>
-
- <para>On <constant>VIDIOCSAUDIO</constant> the
-<structfield>mode</structfield> field selects <emphasis>one</emphasis>
-of the <constant>VIDEO_SOUND_MONO</constant>,
-<constant>VIDEO_SOUND_STEREO</constant>,
-<constant>VIDEO_SOUND_LANG1</constant> or
-<constant>VIDEO_SOUND_LANG2</constant> audio demodulation modes. When
-the current audio standard is BTSC
-<constant>VIDEO_SOUND_LANG2</constant> refers to SAP and
-<constant>VIDEO_SOUND_LANG1</constant> is meaningless. Also
-undocumented in the V4L specification, there is no way to query the
-selected mode. On <constant>VIDIOCGAUDIO</constant> the driver returns
-the <emphasis>actually received</emphasis> audio programmes in this
-field. In the V4L2 API this information is stored in the &v4l2-tuner;
-<structfield>rxsubchans</structfield> and
-<structfield>audmode</structfield> fields, respectively. See <xref
-linkend="tuner" /> for more information on tuners. Related to audio
-modes &v4l2-audio; also reports if this is a mono or stereo
-input, regardless if the source is a tuner.</para>
-
- <para>The following fields where replaced by V4L2 controls
-accessible with the &VIDIOC-QUERYCTRL;, &VIDIOC-G-CTRL; and
-&VIDIOC-S-CTRL; ioctls:<informaltable>
- <tgroup cols="2">
- <thead>
- <row>
- <entry>struct
-<structname>video_audio</structname></entry>
- <entry>V4L2 Control ID</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry><structfield>volume</structfield></entry>
- <entry><constant>V4L2_CID_AUDIO_VOLUME</constant></entry>
- </row>
- <row>
- <entry><structfield>bass</structfield></entry>
- <entry><constant>V4L2_CID_AUDIO_BASS</constant></entry>
- </row>
- <row>
- <entry><structfield>treble</structfield></entry>
- <entry><constant>V4L2_CID_AUDIO_TREBLE</constant></entry>
- </row>
- <row>
- <entry><structfield>balance</structfield></entry>
- <entry><constant>V4L2_CID_AUDIO_BALANCE</constant></entry>
- </row>
- </tbody>
- </tgroup>
- </informaltable></para>
-
- <para>To determine which of these controls are supported by a
-driver V4L provides the <structfield>flags</structfield>
-<constant>VIDEO_AUDIO_VOLUME</constant>,
-<constant>VIDEO_AUDIO_BASS</constant>,
-<constant>VIDEO_AUDIO_TREBLE</constant> and
-<constant>VIDEO_AUDIO_BALANCE</constant>. In the V4L2 API the
-&VIDIOC-QUERYCTRL; ioctl reports if the respective control is
-supported. Accordingly the <constant>VIDEO_AUDIO_MUTABLE</constant>
-and <constant>VIDEO_AUDIO_MUTE</constant> flags where replaced by the
-boolean <constant>V4L2_CID_AUDIO_MUTE</constant> control.</para>
-
- <para>All V4L2 controls have a <structfield>step</structfield>
-attribute replacing the struct <structname>video_audio</structname>
-<structfield>step</structfield> field. The V4L audio controls are
-assumed to range from 0 to 65535 with no particular reset value. The
-V4L2 API permits arbitrary limits and defaults which can be queried
-with the &VIDIOC-QUERYCTRL; ioctl. For general information about
-controls see <xref linkend="control" />.</para>
- </section>
-
- <section>
- <title>Frame Buffer Overlay</title>
-
- <para>The V4L2 ioctls equivalent to
-<constant>VIDIOCGFBUF</constant> and <constant>VIDIOCSFBUF</constant>
-are &VIDIOC-G-FBUF; and &VIDIOC-S-FBUF;. The
-<structfield>base</structfield> field of struct
-<structname>video_buffer</structname> remained unchanged, except V4L2
-defines a flag to indicate non-destructive overlays instead of a
-<constant>NULL</constant> pointer. All other fields moved into the
-&v4l2-pix-format; <structfield>fmt</structfield> substructure of
-&v4l2-framebuffer;. The <structfield>depth</structfield> field was
-replaced by <structfield>pixelformat</structfield>. See <xref
- linkend="pixfmt-rgb" /> for a list of RGB formats and their
-respective color depths.</para>
-
- <para>Instead of the special ioctls
-<constant>VIDIOCGWIN</constant> and <constant>VIDIOCSWIN</constant>
-V4L2 uses the general-purpose data format negotiation ioctls
-&VIDIOC-G-FMT; and &VIDIOC-S-FMT;. They take a pointer to a
-&v4l2-format; as argument. Here the <structfield>win</structfield>
-member of the <structfield>fmt</structfield> union is used, a
-&v4l2-window;.</para>
-
- <para>The <structfield>x</structfield>,
-<structfield>y</structfield>, <structfield>width</structfield> and
-<structfield>height</structfield> fields of struct
-<structname>video_window</structname> moved into &v4l2-rect;
-substructure <structfield>w</structfield> of struct
-<structname>v4l2_window</structname>. The
-<structfield>chromakey</structfield>,
-<structfield>clips</structfield>, and
-<structfield>clipcount</structfield> fields remained unchanged. Struct
-<structname>video_clip</structname> was renamed to &v4l2-clip;, also
-containing a struct <structname>v4l2_rect</structname>, but the
-semantics are still the same.</para>
-
- <para>The <constant>VIDEO_WINDOW_INTERLACE</constant> flag was
-dropped. Instead applications must set the
-<structfield>field</structfield> field to
-<constant>V4L2_FIELD_ANY</constant> or
-<constant>V4L2_FIELD_INTERLACED</constant>. The
-<constant>VIDEO_WINDOW_CHROMAKEY</constant> flag moved into
-&v4l2-framebuffer;, under the new name
-<constant>V4L2_FBUF_FLAG_CHROMAKEY</constant>.</para>
-
- <para>In V4L, storing a bitmap pointer in
-<structfield>clips</structfield> and setting
-<structfield>clipcount</structfield> to
-<constant>VIDEO_CLIP_BITMAP</constant> (-1) requests bitmap
-clipping, using a fixed size bitmap of 1024 × 625 bits. Struct
-<structname>v4l2_window</structname> has a separate
-<structfield>bitmap</structfield> pointer field for this purpose and
-the bitmap size is determined by <structfield>w.width</structfield> and
-<structfield>w.height</structfield>.</para>
-
- <para>The <constant>VIDIOCCAPTURE</constant> ioctl to enable or
-disable overlay was renamed to &VIDIOC-OVERLAY;.</para>
- </section>
-
- <section>
- <title>Cropping</title>
-
- <para>To capture only a subsection of the full picture V4L
-defines the <constant>VIDIOCGCAPTURE</constant> and
-<constant>VIDIOCSCAPTURE</constant> ioctls using struct
-<structname>video_capture</structname>. The equivalent V4L2 ioctls are
-&VIDIOC-G-CROP; and &VIDIOC-S-CROP; using &v4l2-crop;, and the related
-&VIDIOC-CROPCAP; ioctl. This is a rather complex matter, see
-<xref linkend="crop" /> for details.</para>
-
- <para>The <structfield>x</structfield>,
-<structfield>y</structfield>, <structfield>width</structfield> and
-<structfield>height</structfield> fields moved into &v4l2-rect;
-substructure <structfield>c</structfield> of struct
-<structname>v4l2_crop</structname>. The
-<structfield>decimation</structfield> field was dropped. In the V4L2
-API the scaling factor is implied by the size of the cropping
-rectangle and the size of the captured or overlaid image.</para>
-
- <para>The <constant>VIDEO_CAPTURE_ODD</constant>
-and <constant>VIDEO_CAPTURE_EVEN</constant> flags to capture only the
-odd or even field, respectively, were replaced by
-<constant>V4L2_FIELD_TOP</constant> and
-<constant>V4L2_FIELD_BOTTOM</constant> in the field named
-<structfield>field</structfield> of &v4l2-pix-format; and
-&v4l2-window;. These structures are used to select a capture or
-overlay format with the &VIDIOC-S-FMT; ioctl.</para>
- </section>
-
- <section>
- <title>Reading Images, Memory Mapping</title>
-
- <section>
- <title>Capturing using the read method</title>
-
- <para>There is no essential difference between reading images
-from a V4L or V4L2 device using the &func-read; function, however V4L2
-drivers are not required to support this I/O method. Applications can
-determine if the function is available with the &VIDIOC-QUERYCAP;
-ioctl. All V4L2 devices exchanging data with applications must support
-the &func-select; and &func-poll; functions.</para>
-
- <para>To select an image format and size, V4L provides the
-<constant>VIDIOCSPICT</constant> and <constant>VIDIOCSWIN</constant>
-ioctls. V4L2 uses the general-purpose data format negotiation ioctls
-&VIDIOC-G-FMT; and &VIDIOC-S-FMT;. They take a pointer to a
-&v4l2-format; as argument, here the &v4l2-pix-format; named
-<structfield>pix</structfield> of its <structfield>fmt</structfield>
-union is used.</para>
-
- <para>For more information about the V4L2 read interface see
-<xref linkend="rw" />.</para>
- </section>
- <section>
- <title>Capturing using memory mapping</title>
-
- <para>Applications can read from V4L devices by mapping
-buffers in device memory, or more often just buffers allocated in
-DMA-able system memory, into their address space. This avoids the data
-copying overhead of the read method. V4L2 supports memory mapping as
-well, with a few differences.</para>
-
- <informaltable>
- <tgroup cols="2">
- <thead>
- <row>
- <entry>V4L</entry>
- <entry>V4L2</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry></entry>
- <entry>The image format must be selected before
-buffers are allocated, with the &VIDIOC-S-FMT; ioctl. When no format
-is selected the driver may use the last, possibly by another
-application requested format.</entry>
- </row>
- <row>
- <entry><para>Applications cannot change the number of
-buffers. The it is built into the driver, unless it has a module
-option to change the number when the driver module is
-loaded.</para></entry>
- <entry><para>The &VIDIOC-REQBUFS; ioctl allocates the
-desired number of buffers, this is a required step in the initialization
-sequence.</para></entry>
- </row>
- <row>
- <entry><para>Drivers map all buffers as one contiguous
-range of memory. The <constant>VIDIOCGMBUF</constant> ioctl is
-available to query the number of buffers, the offset of each buffer
-from the start of the virtual file, and the overall amount of memory
-used, which can be used as arguments for the &func-mmap;
-function.</para></entry>
- <entry><para>Buffers are individually mapped. The
-offset and size of each buffer can be determined with the
-&VIDIOC-QUERYBUF; ioctl.</para></entry>
- </row>
- <row>
- <entry><para>The <constant>VIDIOCMCAPTURE</constant>
-ioctl prepares a buffer for capturing. It also determines the image
-format for this buffer. The ioctl returns immediately, eventually with
-an &EAGAIN; if no video signal had been detected. When the driver
-supports more than one buffer applications can call the ioctl multiple
-times and thus have multiple outstanding capture
-requests.</para><para>The <constant>VIDIOCSYNC</constant> ioctl
-suspends execution until a particular buffer has been
-filled.</para></entry>
- <entry><para>Drivers maintain an incoming and outgoing
-queue. &VIDIOC-QBUF; enqueues any empty buffer into the incoming
-queue. Filled buffers are dequeued from the outgoing queue with the
-&VIDIOC-DQBUF; ioctl. To wait until filled buffers become available this
-function, &func-select; or &func-poll; can be used. The
-&VIDIOC-STREAMON; ioctl must be called once after enqueuing one or
-more buffers to start capturing. Its counterpart
-&VIDIOC-STREAMOFF; stops capturing and dequeues all buffers from both
-queues. Applications can query the signal status, if known, with the
-&VIDIOC-ENUMINPUT; ioctl.</para></entry>
- </row>
- </tbody>
- </tgroup>
- </informaltable>
-
- <para>For a more in-depth discussion of memory mapping and
-examples, see <xref linkend="mmap" />.</para>
- </section>
- </section>
-
- <section>
- <title>Reading Raw VBI Data</title>
-
- <para>Originally the V4L API did not specify a raw VBI capture
-interface, only the device file <filename>/dev/vbi</filename> was
-reserved for this purpose. The only driver supporting this interface
-was the BTTV driver, de-facto defining the V4L VBI interface. Reading
-from the device yields a raw VBI image with the following
-parameters:<informaltable>
- <tgroup cols="2">
- <thead>
- <row>
- <entry>&v4l2-vbi-format;</entry>
- <entry>V4L, BTTV driver</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry>sampling_rate</entry>
- <entry>28636363 Hz NTSC (or any other 525-line
-standard); 35468950 Hz PAL and SECAM (625-line standards)</entry>
- </row>
- <row>
- <entry>offset</entry>
- <entry>?</entry>
- </row>
- <row>
- <entry>samples_per_line</entry>
- <entry>2048</entry>
- </row>
- <row>
- <entry>sample_format</entry>
- <entry>V4L2_PIX_FMT_GREY. The last four bytes (a
-machine endianess integer) contain a frame counter.</entry>
- </row>
- <row>
- <entry>start[]</entry>
- <entry>10, 273 NTSC; 22, 335 PAL and SECAM</entry>
- </row>
- <row>
- <entry>count[]</entry>
- <entry><para>16, 16<footnote><para>Old driver
-versions used different values, eventually the custom
-<constant>BTTV_VBISIZE</constant> ioctl was added to query the
-correct values.</para></footnote></para></entry>
- </row>
- <row>
- <entry>flags</entry>
- <entry>0</entry>
- </row>
- </tbody>
- </tgroup>
- </informaltable></para>
-
- <para>Undocumented in the V4L specification, in Linux 2.3 the
-<constant>VIDIOCGVBIFMT</constant> and
-<constant>VIDIOCSVBIFMT</constant> ioctls using struct
-<structname>vbi_format</structname> were added to determine the VBI
-image parameters. These ioctls are only partially compatible with the
-V4L2 VBI interface specified in <xref linkend="raw-vbi" />.</para>
-
- <para>An <structfield>offset</structfield> field does not
-exist, <structfield>sample_format</structfield> is supposed to be
-<constant>VIDEO_PALETTE_RAW</constant>, equivalent to
-<constant>V4L2_PIX_FMT_GREY</constant>. The remaining fields are
-probably equivalent to &v4l2-vbi-format;.</para>
-
- <para>Apparently only the Zoran (ZR 36120) driver implements
-these ioctls. The semantics differ from those specified for V4L2 in two
-ways. The parameters are reset on &func-open; and
-<constant>VIDIOCSVBIFMT</constant> always returns an &EINVAL; if the
-parameters are invalid.</para>
- </section>
-
- <section>
- <title>Miscellaneous</title>
-
- <para>V4L2 has no equivalent of the
-<constant>VIDIOCGUNIT</constant> ioctl. Applications can find the VBI
-device associated with a video capture device (or vice versa) by
-reopening the device and requesting VBI data. For details see
-<xref linkend="open" />.</para>
-
- <para>No replacement exists for <constant>VIDIOCKEY</constant>,
-and the V4L functions for microcode programming. A new interface for
-MPEG compression and playback devices is documented in <xref
- linkend="extended-controls" />.</para>
- </section>
-
- </section>
-
- <section id="hist-v4l2">
- <title>Changes of the V4L2 API</title>
-
- <para>Soon after the V4L API was added to the kernel it was
-criticised as too inflexible. In August 1998 Bill Dirks proposed a
-number of improvements and began to work on documentation, example
-drivers and applications. With the help of other volunteers this
-eventually became the V4L2 API, not just an extension but a
-replacement for the V4L API. However it took another four years and
-two stable kernel releases until the new API was finally accepted for
-inclusion into the kernel in its present form.</para>
-
- <section>
- <title>Early Versions</title>
- <para>1998-08-20: First version.</para>
-
- <para>1998-08-27: The &func-select; function was introduced.</para>
-
- <para>1998-09-10: New video standard interface.</para>
-
- <para>1998-09-18: The <constant>VIDIOC_NONCAP</constant> ioctl
-was replaced by the otherwise meaningless <constant>O_TRUNC</constant>
-&func-open; flag, and the aliases <constant>O_NONCAP</constant> and
-<constant>O_NOIO</constant> were defined. Applications can set this
-flag if they intend to access controls only, as opposed to capture
-applications which need exclusive access. The
-<constant>VIDEO_STD_XXX</constant> identifiers are now ordinals
-instead of flags, and the <function>video_std_construct()</function>
-helper function takes id and transmission arguments.</para>
-
- <para>1998-09-28: Revamped video standard. Made video controls
-individually enumerable.</para>
-
- <para>1998-10-02: The <structfield>id</structfield> field was
-removed from struct <structname>video_standard</structname> and the
-color subcarrier fields were renamed. The &VIDIOC-QUERYSTD; ioctl was
-renamed to &VIDIOC-ENUMSTD;, &VIDIOC-G-INPUT; to &VIDIOC-ENUMINPUT;. A
-first draft of the Codec API was released.</para>
-
- <para>1998-11-08: Many minor changes. Most symbols have been
-renamed. Some material changes to &v4l2-capability;.</para>
-
- <para>1998-11-12: The read/write directon of some ioctls was misdefined.</para>
-
- <para>1998-11-14: <constant>V4L2_PIX_FMT_RGB24</constant>
-changed to <constant>V4L2_PIX_FMT_BGR24</constant>, and
-<constant>V4L2_PIX_FMT_RGB32</constant> changed to
-<constant>V4L2_PIX_FMT_BGR32</constant>. Audio controls are now
-accessible with the &VIDIOC-G-CTRL; and &VIDIOC-S-CTRL; ioctls under
-names starting with <constant>V4L2_CID_AUDIO</constant>. The
-<constant>V4L2_MAJOR</constant> define was removed from
-<filename>videodev.h</filename> since it was only used once in the
-<filename>videodev</filename> kernel module. The
-<constant>YUV422</constant> and <constant>YUV411</constant> planar
-image formats were added.</para>
-
- <para>1998-11-28: A few ioctl symbols changed. Interfaces for codecs and
-video output devices were added.</para>
-
- <para>1999-01-14: A raw VBI capture interface was added.</para>
-
- <para>1999-01-19: The <constant>VIDIOC_NEXTBUF</constant> ioctl
- was removed.</para>
- </section>
-
- <section>
- <title>V4L2 Version 0.16 1999-01-31</title>
- <para>1999-01-27: There is now one QBUF ioctl, VIDIOC_QWBUF and VIDIOC_QRBUF
-are gone. VIDIOC_QBUF takes a v4l2_buffer as a parameter. Added
-digital zoom (cropping) controls.</para>
- </section>
-
- <!-- Where's 0.17? mhs couldn't find that videodev.h, perhaps Bill
- forgot to bump the version number or never released it. -->
-
- <section>
- <title>V4L2 Version 0.18 1999-03-16</title>
- <para>Added a v4l to V4L2 ioctl compatibility layer to
-videodev.c. Driver writers, this changes how you implement your ioctl
-handler. See the Driver Writer's Guide. Added some more control id
-codes.</para>
- </section>
-
- <section>
- <title>V4L2 Version 0.19 1999-06-05</title>
- <para>1999-03-18: Fill in the category and catname fields of
-v4l2_queryctrl objects before passing them to the driver. Required a
-minor change to the VIDIOC_QUERYCTRL handlers in the sample
-drivers.</para>
- <para>1999-03-31: Better compatibility for v4l memory capture
-ioctls. Requires changes to drivers to fully support new compatibility
-features, see Driver Writer's Guide and v4l2cap.c. Added new control
-IDs: V4L2_CID_HFLIP, _VFLIP. Changed V4L2_PIX_FMT_YUV422P to _YUV422P,
-and _YUV411P to _YUV411P.</para>
- <para>1999-04-04: Added a few more control IDs.</para>
- <para>1999-04-07: Added the button control type.</para>
- <para>1999-05-02: Fixed a typo in videodev.h, and added the
-V4L2_CTRL_FLAG_GRAYED (later V4L2_CTRL_FLAG_GRABBED) flag.</para>
- <para>1999-05-20: Definition of VIDIOC_G_CTRL was wrong causing
-a malfunction of this ioctl.</para>
- <para>1999-06-05: Changed the value of
-V4L2_CID_WHITENESS.</para>
- </section>
-
- <section>
- <title>V4L2 Version 0.20 (1999-09-10)</title>
-
- <para>Version 0.20 introduced a number of changes which were
-<emphasis>not backward compatible</emphasis> with 0.19 and earlier
-versions. Purpose of these changes was to simplify the API, while
-making it more extensible and following common Linux driver API
-conventions.</para>
-
- <orderedlist>
- <listitem>
- <para>Some typos in <constant>V4L2_FMT_FLAG</constant>
-symbols were fixed. &v4l2-clip; was changed for compatibility with
-v4l. (1999-08-30)</para>
- </listitem>
-
- <listitem>
- <para><constant>V4L2_TUNER_SUB_LANG1</constant> was added.
-(1999-09-05)</para>
- </listitem>
-
- <listitem>
- <para>All ioctl() commands that used an integer argument now
-take a pointer to an integer. Where it makes sense, ioctls will return
-the actual new value in the integer pointed to by the argument, a
-common convention in the V4L2 API. The affected ioctls are:
-VIDIOC_PREVIEW, VIDIOC_STREAMON, VIDIOC_STREAMOFF, VIDIOC_S_FREQ,
-VIDIOC_S_INPUT, VIDIOC_S_OUTPUT, VIDIOC_S_EFFECT. For example
-<programlisting>
-err = ioctl (fd, VIDIOC_XXX, V4L2_XXX);
-</programlisting> becomes <programlisting>
-int a = V4L2_XXX; err = ioctl(fd, VIDIOC_XXX, &a);
-</programlisting>
- </para>
- </listitem>
-
- <listitem>
- <para>All the different get- and set-format commands were
-swept into one &VIDIOC-G-FMT; and &VIDIOC-S-FMT; ioctl taking a union
-and a type field selecting the union member as parameter. Purpose is to
-simplify the API by eliminating several ioctls and to allow new and
-driver private data streams without adding new ioctls.</para>
-
- <para>This change obsoletes the following ioctls:
-<constant>VIDIOC_S_INFMT</constant>,
-<constant>VIDIOC_G_INFMT</constant>,
-<constant>VIDIOC_S_OUTFMT</constant>,
-<constant>VIDIOC_G_OUTFMT</constant>,
-<constant>VIDIOC_S_VBIFMT</constant> and
-<constant>VIDIOC_G_VBIFMT</constant>. The image format structure
-<structname>v4l2_format</structname> was renamed to &v4l2-pix-format;,
-while &v4l2-format; is now the envelopping structure for all format
-negotiations.</para>
- </listitem>
-
- <listitem>
- <para>Similar to the changes above, the
-<constant>VIDIOC_G_PARM</constant> and
-<constant>VIDIOC_S_PARM</constant> ioctls were merged with
-<constant>VIDIOC_G_OUTPARM</constant> and
-<constant>VIDIOC_S_OUTPARM</constant>. A
-<structfield>type</structfield> field in the new &v4l2-streamparm;
-selects the respective union member.</para>
-
- <para>This change obsoletes the
-<constant>VIDIOC_G_OUTPARM</constant> and
-<constant>VIDIOC_S_OUTPARM</constant> ioctls.</para>
- </listitem>
-
- <listitem>
- <para>Control enumeration was simplified, and two new
-control flags were introduced and one dropped. The
-<structfield>catname</structfield> field was replaced by a
-<structfield>group</structfield> field.</para>
-
- <para>Drivers can now flag unsupported and temporarily
-unavailable controls with <constant>V4L2_CTRL_FLAG_DISABLED</constant>
-and <constant>V4L2_CTRL_FLAG_GRABBED</constant> respectively. The
-<structfield>group</structfield> name indicates a possibly narrower
-classification than the <structfield>category</structfield>. In other
-words, there may be multiple groups within a category. Controls within
-a group would typically be drawn within a group box. Controls in
-different categories might have a greater separation, or may even
-appear in separate windows.</para>
- </listitem>
-
- <listitem>
- <para>The &v4l2-buffer; <structfield>timestamp</structfield>
-was changed to a 64 bit integer, containing the sampling or output
-time of the frame in nanoseconds. Additionally timestamps will be in
-absolute system time, not starting from zero at the beginning of a
-stream. The data type name for timestamps is stamp_t, defined as a
-signed 64-bit integer. Output devices should not send a buffer out
-until the time in the timestamp field has arrived. I would like to
-follow SGI's lead, and adopt a multimedia timestamping system like
-their UST (Unadjusted System Time). See
-http://web.archive.org/web/*/http://reality.sgi.com
-/cpirazzi_engr/lg/time/intro.html.
-UST uses timestamps that are 64-bit signed integers
-(not struct timeval's) and given in nanosecond units. The UST clock
-starts at zero when the system is booted and runs continuously and
-uniformly. It takes a little over 292 years for UST to overflow. There
-is no way to set the UST clock. The regular Linux time-of-day clock
-can be changed periodically, which would cause errors if it were being
-used for timestamping a multimedia stream. A real UST style clock will
-require some support in the kernel that is not there yet. But in
-anticipation, I will change the timestamp field to a 64-bit integer,
-and I will change the v4l2_masterclock_gettime() function (used only
-by drivers) to return a 64-bit integer.</para>
- </listitem>
-
- <listitem>
- <para>A <structfield>sequence</structfield> field was added
-to &v4l2-buffer;. The <structfield>sequence</structfield> field counts
-captured frames, it is ignored by output devices. When a capture
-driver drops a frame, the sequence number of that frame is
-skipped.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 Version 0.20 incremental changes</title>
- <!-- Version number didn't change anymore, reason unknown. -->
-
- <para>1999-12-23: In &v4l2-vbi-format; the
-<structfield>reserved1</structfield> field became
-<structfield>offset</structfield>. Previously drivers were required to
-clear the <structfield>reserved1</structfield> field.</para>
-
- <para>2000-01-13: The
- <constant>V4L2_FMT_FLAG_NOT_INTERLACED</constant> flag was added.</para>
-
- <para>2000-07-31: The <filename>linux/poll.h</filename> header
-is now included by <filename>videodev.h</filename> for compatibility
-with the original <filename>videodev.h</filename> file.</para>
-
- <para>2000-11-20: <constant>V4L2_TYPE_VBI_OUTPUT</constant> and
-<constant>V4L2_PIX_FMT_Y41P</constant> were added.</para>
-
- <para>2000-11-25: <constant>V4L2_TYPE_VBI_INPUT</constant> was
-added.</para>
-
- <para>2000-12-04: A couple typos in symbol names were fixed.</para>
-
- <para>2001-01-18: To avoid namespace conflicts the
-<constant>fourcc</constant> macro defined in the
-<filename>videodev.h</filename> header file was renamed to
-<constant>v4l2_fourcc</constant>.</para>
-
- <para>2001-01-25: A possible driver-level compatibility problem
-between the <filename>videodev.h</filename> file in Linux 2.4.0 and
-the <filename>videodev.h</filename> file included in the
-<filename>videodevX</filename> patch was fixed. Users of an earlier
-version of <filename>videodevX</filename> on Linux 2.4.0 should
-recompile their V4L and V4L2 drivers.</para>
-
- <para>2001-01-26: A possible kernel-level incompatibility
-between the <filename>videodev.h</filename> file in the
-<filename>videodevX</filename> patch and the
-<filename>videodev.h</filename> file in Linux 2.2.x with devfs patches
-applied was fixed.</para>
-
- <para>2001-03-02: Certain V4L ioctls which pass data in both
-direction although they are defined with read-only parameter, did not
-work correctly through the backward compatibility layer.
-[Solution?]</para>
-
- <para>2001-04-13: Big endian 16-bit RGB formats were added.</para>
-
- <para>2001-09-17: New YUV formats and the &VIDIOC-G-FREQUENCY; and
-&VIDIOC-S-FREQUENCY; ioctls were added. (The old
-<constant>VIDIOC_G_FREQ</constant> and
-<constant>VIDIOC_S_FREQ</constant> ioctls did not take multiple tuners
-into account.)</para>
-
- <para>2000-09-18: <constant>V4L2_BUF_TYPE_VBI</constant> was
-added. This may <emphasis>break compatibility</emphasis> as the
-&VIDIOC-G-FMT; and &VIDIOC-S-FMT; ioctls may fail now if the struct
-<structname>v4l2_fmt</structname> <structfield>type</structfield>
-field does not contain <constant>V4L2_BUF_TYPE_VBI</constant>. In the
-documentation of the &v4l2-vbi-format;
-<structfield>offset</structfield> field the ambiguous phrase "rising
-edge" was changed to "leading edge".</para>
- </section>
-
- <section>
- <title>V4L2 Version 0.20 2000-11-23</title>
-
- <para>A number of changes were made to the raw VBI
-interface.</para>
-
- <orderedlist>
- <listitem>
- <para>Figures clarifying the line numbering scheme were
-added to the V4L2 API specification. The
-<structfield>start</structfield>[0] and
-<structfield>start</structfield>[1] fields no longer count line
-numbers beginning at zero. Rationale: a) The previous definition was
-unclear. b) The <structfield>start</structfield>[] values are ordinal
-numbers. c) There is no point in inventing a new line numbering
-scheme. We now use line number as defined by ITU-R, period.
-Compatibility: Add one to the start values. Applications depending on
-the previous semantics may not function correctly.</para>
- </listitem>
-
- <listitem>
- <para>The restriction "count[0] > 0 and count[1] > 0"
-has been relaxed to "(count[0] + count[1]) > 0". Rationale:
-Drivers may allocate resources at scan line granularity and some data
-services are transmitted only on the first field. The comment that
-both <structfield>count</structfield> values will usually be equal is
-misleading and pointless and has been removed. This change
-<emphasis>breaks compatibility</emphasis> with earlier versions:
-Drivers may return EINVAL, applications may not function
-correctly.</para>
- </listitem>
-
- <listitem>
- <para>Drivers are again permitted to return negative
-(unknown) start values as proposed earlier. Why this feature was
-dropped is unclear. This change may <emphasis>break
-compatibility</emphasis> with applications depending on the start
-values being positive. The use of <constant>EBUSY</constant> and
-<constant>EINVAL</constant> error codes with the &VIDIOC-S-FMT; ioctl
-was clarified. The &EBUSY; was finally documented, and the
-<structfield>reserved2</structfield> field which was previously
-mentioned only in the <filename>videodev.h</filename> header
-file.</para>
- </listitem>
-
- <listitem>
- <para>New buffer types
-<constant>V4L2_TYPE_VBI_INPUT</constant> and
-<constant>V4L2_TYPE_VBI_OUTPUT</constant> were added. The former is an
-alias for the old <constant>V4L2_TYPE_VBI</constant>, the latter was
-missing in the <filename>videodev.h</filename> file.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 Version 0.20 2002-07-25</title>
- <para>Added sliced VBI interface proposal.</para>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.5.46, 2002-10</title>
-
- <para>Around October-November 2002, prior to an announced
-feature freeze of Linux 2.5, the API was revised, drawing from
-experience with V4L2 0.20. This unnamed version was finally merged
-into Linux 2.5.46.</para>
-
- <orderedlist>
- <listitem>
- <para>As specified in <xref linkend="related" />, drivers
-must make related device functions available under all minor device
-numbers.</para>
- </listitem>
-
- <listitem>
- <para>The &func-open; function requires access mode
-<constant>O_RDWR</constant> regardless of the device type. All V4L2
-drivers exchanging data with applications must support the
-<constant>O_NONBLOCK</constant> flag. The <constant>O_NOIO</constant>
-flag, a V4L2 symbol which aliased the meaningless
-<constant>O_TRUNC</constant> to indicate accesses without data
-exchange (panel applications) was dropped. Drivers must stay in "panel
-mode" until the application attempts to initiate a data exchange, see
-<xref linkend="open" />.</para>
- </listitem>
-
- <listitem>
- <para>The &v4l2-capability; changed dramatically. Note that
-also the size of the structure changed, which is encoded in the ioctl
-request code, thus older V4L2 devices will respond with an &EINVAL; to
-the new &VIDIOC-QUERYCAP; ioctl.</para>
-
- <para>There are new fields to identify the driver, a new RDS
-device function <constant>V4L2_CAP_RDS_CAPTURE</constant>, the
-<constant>V4L2_CAP_AUDIO</constant> flag indicates if the device has
-any audio connectors, another I/O capability
-<constant>V4L2_CAP_ASYNCIO</constant> can be flagged. In response to
-these changes the <structfield>type</structfield> field became a bit
-set and was merged into the <structfield>flags</structfield> field.
-<constant>V4L2_FLAG_TUNER</constant> was renamed to
-<constant>V4L2_CAP_TUNER</constant>,
-<constant>V4L2_CAP_VIDEO_OVERLAY</constant> replaced
-<constant>V4L2_FLAG_PREVIEW</constant> and
-<constant>V4L2_CAP_VBI_CAPTURE</constant> and
-<constant>V4L2_CAP_VBI_OUTPUT</constant> replaced
-<constant>V4L2_FLAG_DATA_SERVICE</constant>.
-<constant>V4L2_FLAG_READ</constant> and
-<constant>V4L2_FLAG_WRITE</constant> were merged into
-<constant>V4L2_CAP_READWRITE</constant>.</para>
-
- <para>The redundant fields
-<structfield>inputs</structfield>, <structfield>outputs</structfield>
-and <structfield>audios</structfield> were removed. These properties
-can be determined as described in <xref linkend="video" /> and <xref
-linkend="audio" />.</para>
-
- <para>The somewhat volatile and therefore barely useful
-fields <structfield>maxwidth</structfield>,
-<structfield>maxheight</structfield>,
-<structfield>minwidth</structfield>,
-<structfield>minheight</structfield>,
-<structfield>maxframerate</structfield> were removed. This information
-is available as described in <xref linkend="format" /> and
-<xref linkend="standard" />.</para>
-
- <para><constant>V4L2_FLAG_SELECT</constant> was removed. We
-believe the select() function is important enough to require support
-of it in all V4L2 drivers exchanging data with applications. The
-redundant <constant>V4L2_FLAG_MONOCHROME</constant> flag was removed,
-this information is available as described in <xref
- linkend="format" />.</para>
- </listitem>
-
- <listitem>
- <para>In &v4l2-input; the
-<structfield>assoc_audio</structfield> field and the
-<structfield>capability</structfield> field and its only flag
-<constant>V4L2_INPUT_CAP_AUDIO</constant> was replaced by the new
-<structfield>audioset</structfield> field. Instead of linking one
-video input to one audio input this field reports all audio inputs
-this video input combines with.</para>
-
- <para>New fields are <structfield>tuner</structfield>
-(reversing the former link from tuners to video inputs),
-<structfield>std</structfield> and
-<structfield>status</structfield>.</para>
-
- <para>Accordingly &v4l2-output; lost its
-<structfield>capability</structfield> and
-<structfield>assoc_audio</structfield> fields.
-<structfield>audioset</structfield>,
-<structfield>modulator</structfield> and
-<structfield>std</structfield> where added instead.</para>
- </listitem>
-
- <listitem>
- <para>The &v4l2-audio; field
-<structfield>audio</structfield> was renamed to
-<structfield>index</structfield>, for consistency with other
-structures. A new capability flag
-<constant>V4L2_AUDCAP_STEREO</constant> was added to indicated if the
-audio input in question supports stereo sound.
-<constant>V4L2_AUDCAP_EFFECTS</constant> and the corresponding
-<constant>V4L2_AUDMODE</constant> flags where removed. This can be
-easily implemented using controls. (However the same applies to AVL
-which is still there.)</para>
-
- <para>Again for consistency the &v4l2-audioout; field
-<structfield>audio</structfield> was renamed to
-<structfield>index</structfield>.</para>
- </listitem>
-
- <listitem>
- <para>The &v4l2-tuner;
-<structfield>input</structfield> field was replaced by an
-<structfield>index</structfield> field, permitting devices with
-multiple tuners. The link between video inputs and tuners is now
-reversed, inputs point to their tuner. The
-<structfield>std</structfield> substructure became a
-simple set (more about this below) and moved into &v4l2-input;. A
-<structfield>type</structfield> field was added.</para>
-
- <para>Accordingly in &v4l2-modulator; the
-<structfield>output</structfield> was replaced by an
-<structfield>index</structfield> field.</para>
-
- <para>In &v4l2-frequency; the
-<structfield>port</structfield> field was replaced by a
-<structfield>tuner</structfield> field containing the respective tuner
-or modulator index number. A tuner <structfield>type</structfield>
-field was added and the <structfield>reserved</structfield> field
-became larger for future extensions (satellite tuners in
-particular).</para>
- </listitem>
-
- <listitem>
- <para>The idea of completely transparent video standards was
-dropped. Experience showed that applications must be able to work with
-video standards beyond presenting the user a menu. Instead of
-enumerating supported standards with an ioctl applications can now
-refer to standards by &v4l2-std-id; and symbols defined in the
-<filename>videodev2.h</filename> header file. For details see <xref
- linkend="standard" />. The &VIDIOC-G-STD; and
-&VIDIOC-S-STD; now take a pointer to this type as argument.
-&VIDIOC-QUERYSTD; was added to autodetect the received standard, if
-the hardware has this capability. In &v4l2-standard; an
-<structfield>index</structfield> field was added for &VIDIOC-ENUMSTD;.
-A &v4l2-std-id; field named <structfield>id</structfield> was added as
-machine readable identifier, also replacing the
-<structfield>transmission</structfield> field. The misleading
-<structfield>framerate</structfield> field was renamed
-to <structfield>frameperiod</structfield>. The now obsolete
-<structfield>colorstandard</structfield> information, originally
-needed to distguish between variations of standards, were
-removed.</para>
-
- <para>Struct <structname>v4l2_enumstd</structname> ceased to
-be. &VIDIOC-ENUMSTD; now takes a pointer to a &v4l2-standard;
-directly. The information which standards are supported by a
-particular video input or output moved into &v4l2-input; and
-&v4l2-output; fields named <structfield>std</structfield>,
-respectively.</para>
- </listitem>
-
- <listitem>
- <para>The &v4l2-queryctrl; fields
-<structfield>category</structfield> and
-<structfield>group</structfield> did not catch on and/or were not
-implemented as expected and therefore removed.</para>
- </listitem>
-
- <listitem>
- <para>The &VIDIOC-TRY-FMT; ioctl was added to negotiate data
-formats as with &VIDIOC-S-FMT;, but without the overhead of
-programming the hardware and regardless of I/O in progress.</para>
-
- <para>In &v4l2-format; the <structfield>fmt</structfield>
-union was extended to contain &v4l2-window;. All image format
-negotiations are now possible with <constant>VIDIOC_G_FMT</constant>,
-<constant>VIDIOC_S_FMT</constant> and
-<constant>VIDIOC_TRY_FMT</constant>; ioctl. The
-<constant>VIDIOC_G_WIN</constant> and
-<constant>VIDIOC_S_WIN</constant> ioctls to prepare for a video
-overlay were removed. The <structfield>type</structfield> field
-changed to type &v4l2-buf-type; and the buffer type names changed as
-follows.<informaltable>
- <tgroup cols="2">
- <thead>
- <row>
- <entry>Old defines</entry>
- <entry>&v4l2-buf-type;</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_BUF_TYPE_CAPTURE</constant></entry>
- <entry><constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant></entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_CODECIN</constant></entry>
- <entry>Omitted for now</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_CODECOUT</constant></entry>
- <entry>Omitted for now</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_EFFECTSIN</constant></entry>
- <entry>Omitted for now</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_EFFECTSIN2</constant></entry>
- <entry>Omitted for now</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_EFFECTSOUT</constant></entry>
- <entry>Omitted for now</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_VIDEOOUT</constant></entry>
- <entry><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant></entry>
- </row>
- <row>
- <entry><constant>-</constant></entry>
- <entry><constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant></entry>
- </row>
- <row>
- <entry><constant>-</constant></entry>
- <entry><constant>V4L2_BUF_TYPE_VBI_CAPTURE</constant></entry>
- </row>
- <row>
- <entry><constant>-</constant></entry>
- <entry><constant>V4L2_BUF_TYPE_VBI_OUTPUT</constant></entry>
- </row>
- <row>
- <entry><constant>-</constant></entry>
- <entry><constant>V4L2_BUF_TYPE_SLICED_VBI_CAPTURE</constant></entry>
- </row>
- <row>
- <entry><constant>-</constant></entry>
- <entry><constant>V4L2_BUF_TYPE_SLICED_VBI_OUTPUT</constant></entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_PRIVATE_BASE</constant></entry>
- <entry><constant>V4L2_BUF_TYPE_PRIVATE</constant></entry>
- </row>
- </tbody>
- </tgroup>
- </informaltable></para>
- </listitem>
-
- <listitem>
- <para>In &v4l2-fmtdesc; a &v4l2-buf-type; field named
-<structfield>type</structfield> was added as in &v4l2-format;. The
-<constant>VIDIOC_ENUM_FBUFFMT</constant> ioctl is no longer needed and
-was removed. These calls can be replaced by &VIDIOC-ENUM-FMT; with
-type <constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>.</para>
- </listitem>
-
- <listitem>
- <para>In &v4l2-pix-format; the
-<structfield>depth</structfield> field was removed, assuming
-applications which recognize the format by its four-character-code
-already know the color depth, and others do not care about it. The
-same rationale lead to the removal of the
-<constant>V4L2_FMT_FLAG_COMPRESSED</constant> flag. The
-<constant>V4L2_FMT_FLAG_SWCONVECOMPRESSED</constant> flag was removed
-because drivers are not supposed to convert images in kernel space. A
-user library of conversion functions should be provided instead. The
-<constant>V4L2_FMT_FLAG_BYTESPERLINE</constant> flag was redundant.
-Applications can set the <structfield>bytesperline</structfield> field
-to zero to get a reasonable default. Since the remaining flags were
-replaced as well, the <structfield>flags</structfield> field itself
-was removed.</para>
- <para>The interlace flags were replaced by a &v4l2-field;
-value in a newly added <structfield>field</structfield>
-field.<informaltable>
- <tgroup cols="2">
- <thead>
- <row>
- <entry>Old flag</entry>
- <entry>&v4l2-field;</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_FMT_FLAG_NOT_INTERLACED</constant></entry>
- <entry>?</entry>
- </row>
- <row>
- <entry><constant>V4L2_FMT_FLAG_INTERLACED</constant>
-= <constant>V4L2_FMT_FLAG_COMBINED</constant></entry>
- <entry><constant>V4L2_FIELD_INTERLACED</constant></entry>
- </row>
- <row>
- <entry><constant>V4L2_FMT_FLAG_TOPFIELD</constant>
-= <constant>V4L2_FMT_FLAG_ODDFIELD</constant></entry>
- <entry><constant>V4L2_FIELD_TOP</constant></entry>
- </row>
- <row>
- <entry><constant>V4L2_FMT_FLAG_BOTFIELD</constant>
-= <constant>V4L2_FMT_FLAG_EVENFIELD</constant></entry>
- <entry><constant>V4L2_FIELD_BOTTOM</constant></entry>
- </row>
- <row>
- <entry><constant>-</constant></entry>
- <entry><constant>V4L2_FIELD_SEQ_TB</constant></entry>
- </row>
- <row>
- <entry><constant>-</constant></entry>
- <entry><constant>V4L2_FIELD_SEQ_BT</constant></entry>
- </row>
- <row>
- <entry><constant>-</constant></entry>
- <entry><constant>V4L2_FIELD_ALTERNATE</constant></entry>
- </row>
- </tbody>
- </tgroup>
- </informaltable></para>
-
- <para>The color space flags were replaced by a
-&v4l2-colorspace; value in a newly added
-<structfield>colorspace</structfield> field, where one of
-<constant>V4L2_COLORSPACE_SMPTE170M</constant>,
-<constant>V4L2_COLORSPACE_BT878</constant>,
-<constant>V4L2_COLORSPACE_470_SYSTEM_M</constant> or
-<constant>V4L2_COLORSPACE_470_SYSTEM_BG</constant> replaces
-<constant>V4L2_FMT_CS_601YUV</constant>.</para>
- </listitem>
-
- <listitem>
- <para>In &v4l2-requestbuffers; the
-<structfield>type</structfield> field was properly defined as
-&v4l2-buf-type;. Buffer types changed as mentioned above. A new
-<structfield>memory</structfield> field of type &v4l2-memory; was
-added to distinguish between I/O methods using buffers allocated
-by the driver or the application. See <xref linkend="io" /> for
-details.</para>
- </listitem>
-
- <listitem>
- <para>In &v4l2-buffer; the <structfield>type</structfield>
-field was properly defined as &v4l2-buf-type;. Buffer types changed as
-mentioned above. A <structfield>field</structfield> field of type
-&v4l2-field; was added to indicate if a buffer contains a top or
-bottom field. The old field flags were removed. Since no unadjusted
-system time clock was added to the kernel as planned, the
-<structfield>timestamp</structfield> field changed back from type
-stamp_t, an unsigned 64 bit integer expressing the sample time in
-nanoseconds, to struct <structname>timeval</structname>. With the
-addition of a second memory mapping method the
-<structfield>offset</structfield> field moved into union
-<structfield>m</structfield>, and a new
-<structfield>memory</structfield> field of type &v4l2-memory; was
-added to distinguish between I/O methods. See <xref linkend="io" />
-for details.</para>
-
- <para>The <constant>V4L2_BUF_REQ_CONTIG</constant>
-flag was used by the V4L compatibility layer, after changes to this
-code it was no longer needed. The
-<constant>V4L2_BUF_ATTR_DEVICEMEM</constant> flag would indicate if
-the buffer was indeed allocated in device memory rather than DMA-able
-system memory. It was barely useful and so was removed.</para>
- </listitem>
-
- <listitem>
- <para>In &v4l2-framebuffer; the
-<structfield>base[3]</structfield> array anticipating double- and
-triple-buffering in off-screen video memory, however without defining
-a synchronization mechanism, was replaced by a single pointer. The
-<constant>V4L2_FBUF_CAP_SCALEUP</constant> and
-<constant>V4L2_FBUF_CAP_SCALEDOWN</constant> flags were removed.
-Applications can determine this capability more accurately using the
-new cropping and scaling interface. The
-<constant>V4L2_FBUF_CAP_CLIPPING</constant> flag was replaced by
-<constant>V4L2_FBUF_CAP_LIST_CLIPPING</constant> and
-<constant>V4L2_FBUF_CAP_BITMAP_CLIPPING</constant>.</para>
- </listitem>
-
- <listitem>
- <para>In &v4l2-clip; the <structfield>x</structfield>,
-<structfield>y</structfield>, <structfield>width</structfield> and
-<structfield>height</structfield> field moved into a
-<structfield>c</structfield> substructure of type &v4l2-rect;. The
-<structfield>x</structfield> and <structfield>y</structfield> fields
-were renamed to <structfield>left</structfield> and
-<structfield>top</structfield>, &ie; offsets to a context dependent
-origin.</para>
- </listitem>
-
- <listitem>
- <para>In &v4l2-window; the <structfield>x</structfield>,
-<structfield>y</structfield>, <structfield>width</structfield> and
-<structfield>height</structfield> field moved into a
-<structfield>w</structfield> substructure as above. A
-<structfield>field</structfield> field of type %v4l2-field; was added
-to distinguish between field and frame (interlaced) overlay.</para>
- </listitem>
-
- <listitem>
- <para>The digital zoom interface, including struct
-<structname>v4l2_zoomcap</structname>, struct
-<structname>v4l2_zoom</structname>,
-<constant>V4L2_ZOOM_NONCAP</constant> and
-<constant>V4L2_ZOOM_WHILESTREAMING</constant> was replaced by a new
-cropping and scaling interface. The previously unused struct
-<structname>v4l2_cropcap</structname> and
-<structname>v4l2_crop</structname> where redefined for this purpose.
-See <xref linkend="crop" /> for details.</para>
- </listitem>
-
- <listitem>
- <para>In &v4l2-vbi-format; the
-<structfield>SAMPLE_FORMAT</structfield> field now contains a
-four-character-code as used to identify video image formats and
-<constant>V4L2_PIX_FMT_GREY</constant> replaces the
-<constant>V4L2_VBI_SF_UBYTE</constant> define. The
-<structfield>reserved</structfield> field was extended.</para>
- </listitem>
-
- <listitem>
- <para>In &v4l2-captureparm; the type of the
-<structfield>timeperframe</structfield> field changed from unsigned
-long to &v4l2-fract;. This allows the accurate expression of multiples
-of the NTSC-M frame rate 30000 / 1001. A new field
-<structfield>readbuffers</structfield> was added to control the driver
-behaviour in read I/O mode.</para>
-
- <para>Similar changes were made to &v4l2-outputparm;.</para>
- </listitem>
-
- <listitem>
- <para>The struct <structname>v4l2_performance</structname>
-and <constant>VIDIOC_G_PERF</constant> ioctl were dropped. Except when
-using the <link linkend="rw">read/write I/O method</link>, which is
-limited anyway, this information is already available to
-applications.</para>
- </listitem>
-
- <listitem>
- <para>The example transformation from RGB to YCbCr color
-space in the old V4L2 documentation was inaccurate, this has been
-corrected in <xref linkend="pixfmt" />.<!-- 0.5670G should be
-0.587, and 127/112 != 255/224 --></para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 2003-06-19</title>
-
- <orderedlist>
- <listitem>
- <para>A new capability flag
-<constant>V4L2_CAP_RADIO</constant> was added for radio devices. Prior
-to this change radio devices would identify solely by having exactly one
-tuner whose type field reads <constant>V4L2_TUNER_RADIO</constant>.</para>
- </listitem>
-
- <listitem>
- <para>An optional driver access priority mechanism was
-added, see <xref linkend="app-pri" /> for details.</para>
- </listitem>
-
- <listitem>
- <para>The audio input and output interface was found to be
-incomplete.</para>
- <para>Previously the &VIDIOC-G-AUDIO;
-ioctl would enumerate the available audio inputs. An ioctl to
-determine the current audio input, if more than one combines with the
-current video input, did not exist. So
-<constant>VIDIOC_G_AUDIO</constant> was renamed to
-<constant>VIDIOC_G_AUDIO_OLD</constant>, this ioctl was removed on
-Kernel 2.6.39. The &VIDIOC-ENUMAUDIO; ioctl was added to enumerate
-audio inputs, while &VIDIOC-G-AUDIO; now reports the current audio
-input.</para>
- <para>The same changes were made to &VIDIOC-G-AUDOUT; and
-&VIDIOC-ENUMAUDOUT;.</para>
- <para>Until further the "videodev" module will automatically
-translate between the old and new ioctls, but drivers and applications
-must be updated to successfully compile again.</para>
- </listitem>
-
- <listitem>
- <para>The &VIDIOC-OVERLAY; ioctl was incorrectly defined with
-write-read parameter. It was changed to write-only, while the write-read
-version was renamed to <constant>VIDIOC_OVERLAY_OLD</constant>. The old
-ioctl was removed on Kernel 2.6.39. Until further the "videodev"
-kernel module will automatically translate to the new version, so drivers
-must be recompiled, but not applications.</para>
- </listitem>
-
- <listitem>
- <para><xref linkend="overlay" /> incorrectly stated that
-clipping rectangles define regions where the video can be seen.
-Correct is that clipping rectangles define regions where
-<emphasis>no</emphasis> video shall be displayed and so the graphics
-surface can be seen.</para>
- </listitem>
-
- <listitem>
- <para>The &VIDIOC-S-PARM; and &VIDIOC-S-CTRL; ioctls were
-defined with write-only parameter, inconsistent with other ioctls
-modifying their argument. They were changed to write-read, while a
-<constant>_OLD</constant> suffix was added to the write-only versions.
-The old ioctls were removed on Kernel 2.6.39. Drivers and
-applications assuming a constant parameter need an update.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 2003-11-05</title>
- <orderedlist>
- <listitem>
- <para>In <xref linkend="pixfmt-rgb" /> the following pixel
-formats were incorrectly transferred from Bill Dirks' V4L2
-specification. Descriptions below refer to bytes in memory, in
-ascending address order.<informaltable>
- <tgroup cols="3">
- <thead>
- <row>
- <entry>Symbol</entry>
- <entry>In this document prior to revision
-0.5</entry>
- <entry>Corrected</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_PIX_FMT_RGB24</constant></entry>
- <entry>B, G, R</entry>
- <entry>R, G, B</entry>
- </row>
- <row>
- <entry><constant>V4L2_PIX_FMT_BGR24</constant></entry>
- <entry>R, G, B</entry>
- <entry>B, G, R</entry>
- </row>
- <row>
- <entry><constant>V4L2_PIX_FMT_RGB32</constant></entry>
- <entry>B, G, R, X</entry>
- <entry>R, G, B, X</entry>
- </row>
- <row>
- <entry><constant>V4L2_PIX_FMT_BGR32</constant></entry>
- <entry>R, G, B, X</entry>
- <entry>B, G, R, X</entry>
- </row>
- </tbody>
- </tgroup>
- </informaltable> The
-<constant>V4L2_PIX_FMT_BGR24</constant> example was always
-correct.</para>
- <para>In <xref linkend="v4l-image-properties" /> the mapping
-of the V4L <constant>VIDEO_PALETTE_RGB24</constant> and
-<constant>VIDEO_PALETTE_RGB32</constant> formats to V4L2 pixel formats
-was accordingly corrected.</para>
- </listitem>
-
- <listitem>
- <para>Unrelated to the fixes above, drivers may still
-interpret some V4L2 RGB pixel formats differently. These issues have
-yet to be addressed, for details see <xref
- linkend="pixfmt-rgb" />.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.6, 2004-05-09</title>
- <orderedlist>
- <listitem>
- <para>The &VIDIOC-CROPCAP; ioctl was incorrectly defined
-with read-only parameter. It is now defined as write-read ioctl, while
-the read-only version was renamed to
-<constant>VIDIOC_CROPCAP_OLD</constant>. The old ioctl was removed
-on Kernel 2.6.39.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.8</title>
- <orderedlist>
- <listitem>
- <para>A new field <structfield>input</structfield> (former
-<structfield>reserved[0]</structfield>) was added to the &v4l2-buffer;
-structure. Purpose of this field is to alternate between video inputs
-(⪚ cameras) in step with the video capturing process. This function
-must be enabled with the new <constant>V4L2_BUF_FLAG_INPUT</constant>
-flag. The <structfield>flags</structfield> field is no longer
-read-only.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 spec erratum 2004-08-01</title>
-
- <orderedlist>
- <listitem>
- <para>The return value of the
-<xref linkend="func-open" /> function was incorrectly documented.</para>
- </listitem>
-
- <listitem>
- <para>Audio output ioctls end in -AUDOUT, not -AUDIOOUT.</para>
- </listitem>
-
- <listitem>
- <para>In the Current Audio Input example the
-<constant>VIDIOC_G_AUDIO</constant> ioctl took the wrong
-argument.</para>
- </listitem>
-
- <listitem>
- <para>The documentation of the &VIDIOC-QBUF; and
-&VIDIOC-DQBUF; ioctls did not mention the &v4l2-buffer;
-<structfield>memory</structfield> field. It was also missing from
-examples. Also on the <constant>VIDIOC_DQBUF</constant> page the &EIO;
-was not documented.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.14</title>
- <orderedlist>
- <listitem>
- <para>A new sliced VBI interface was added. It is documented
-in <xref linkend="sliced" /> and replaces the interface first
-proposed in V4L2 specification 0.8.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.15</title>
- <orderedlist>
- <listitem>
- <para>The &VIDIOC-LOG-STATUS; ioctl was added.</para>
- </listitem>
-
- <listitem>
- <para>New video standards
-<constant>V4L2_STD_NTSC_443</constant>,
-<constant>V4L2_STD_SECAM_LC</constant>,
-<constant>V4L2_STD_SECAM_DK</constant> (a set of SECAM D, K and K1),
-and <constant>V4L2_STD_ATSC</constant> (a set of
-<constant>V4L2_STD_ATSC_8_VSB</constant> and
-<constant>V4L2_STD_ATSC_16_VSB</constant>) were defined. Note the
-<constant>V4L2_STD_525_60</constant> set now includes
-<constant>V4L2_STD_NTSC_443</constant>. See also <xref
- linkend="v4l2-std-id" />.</para>
- </listitem>
-
- <listitem>
- <para>The <constant>VIDIOC_G_COMP</constant> and
-<constant>VIDIOC_S_COMP</constant> ioctl were renamed to
-<constant>VIDIOC_G_MPEGCOMP</constant> and
-<constant>VIDIOC_S_MPEGCOMP</constant> respectively. Their argument
-was replaced by a struct
-<structname>v4l2_mpeg_compression</structname> pointer. (The
-<constant>VIDIOC_G_MPEGCOMP</constant> and
-<constant>VIDIOC_S_MPEGCOMP</constant> ioctls where removed in Linux
-2.6.25.)</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 spec erratum 2005-11-27</title>
- <para>The capture example in <xref linkend="capture-example" />
-called the &VIDIOC-S-CROP; ioctl without checking if cropping is
-supported. In the video standard selection example in
-<xref linkend="standard" /> the &VIDIOC-S-STD; call used the wrong
-argument type.</para>
- </section>
-
- <section>
- <title>V4L2 spec erratum 2006-01-10</title>
- <orderedlist>
- <listitem>
- <para>The <constant>V4L2_IN_ST_COLOR_KILL</constant> flag in
-&v4l2-input; not only indicates if the color killer is enabled, but
-also if it is active. (The color killer disables color decoding when
-it detects no color in the video signal to improve the image
-quality.)</para>
- </listitem>
-
- <listitem>
- <para>&VIDIOC-S-PARM; is a write-read ioctl, not write-only as
-stated on its reference page. The ioctl changed in 2003 as noted above.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 spec erratum 2006-02-03</title>
- <orderedlist>
- <listitem>
- <para>In &v4l2-captureparm; and &v4l2-outputparm; the
-<structfield>timeperframe</structfield> field gives the time in
-seconds, not microseconds.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 spec erratum 2006-02-04</title>
- <orderedlist>
- <listitem>
- <para>The <structfield>clips</structfield> field in
-&v4l2-window; must point to an array of &v4l2-clip;, not a linked
-list, because drivers ignore the struct
-<structname>v4l2_clip</structname>.<structfield>next</structfield>
-pointer.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.17</title>
- <orderedlist>
- <listitem>
- <para>New video standard macros were added:
-<constant>V4L2_STD_NTSC_M_KR</constant> (NTSC M South Korea), and the
-sets <constant>V4L2_STD_MN</constant>,
-<constant>V4L2_STD_B</constant>, <constant>V4L2_STD_GH</constant> and
-<constant>V4L2_STD_DK</constant>. The
-<constant>V4L2_STD_NTSC</constant> and
-<constant>V4L2_STD_SECAM</constant> sets now include
-<constant>V4L2_STD_NTSC_M_KR</constant> and
-<constant>V4L2_STD_SECAM_LC</constant> respectively.</para>
- </listitem>
-
- <listitem>
- <para>A new <constant>V4L2_TUNER_MODE_LANG1_LANG2</constant>
-was defined to record both languages of a bilingual program. The
-use of <constant>V4L2_TUNER_MODE_STEREO</constant> for this purpose
-is deprecated now. See the &VIDIOC-G-TUNER; section for
-details.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 spec erratum 2006-09-23 (Draft 0.15)</title>
- <orderedlist>
- <listitem>
- <para>In various places
-<constant>V4L2_BUF_TYPE_SLICED_VBI_CAPTURE</constant> and
-<constant>V4L2_BUF_TYPE_SLICED_VBI_OUTPUT</constant> of the sliced VBI
-interface were not mentioned along with other buffer types.</para>
- </listitem>
-
- <listitem>
- <para>In <xref linkend="vidioc-g-audio" /> it was clarified
-that the &v4l2-audio; <structfield>mode</structfield> field is a flags
-field.</para>
- </listitem>
-
- <listitem>
- <para><xref linkend="vidioc-querycap" /> did not mention the
-sliced VBI and radio capability flags.</para>
- </listitem>
-
- <listitem>
- <para>In <xref linkend="vidioc-g-frequency" /> it was
-clarified that applications must initialize the tuner
-<structfield>type</structfield> field of &v4l2-frequency; before
-calling &VIDIOC-S-FREQUENCY;.</para>
- </listitem>
-
- <listitem>
- <para>The <structfield>reserved</structfield> array
-in &v4l2-requestbuffers; has 2 elements, not 32.</para>
- </listitem>
-
- <listitem>
- <para>In <xref linkend="output" /> and <xref
- linkend="raw-vbi" /> the device file names
-<filename>/dev/vout</filename> which never caught on were replaced
-by <filename>/dev/video</filename>.</para>
- </listitem>
-
- <listitem>
- <para>With Linux 2.6.15 the possible range for VBI device minor
-numbers was extended from 224-239 to 224-255. Accordingly device file names
-<filename>/dev/vbi0</filename> to <filename>/dev/vbi31</filename> are
-possible now.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.18</title>
- <orderedlist>
- <listitem>
- <para>New ioctls &VIDIOC-G-EXT-CTRLS;, &VIDIOC-S-EXT-CTRLS;
-and &VIDIOC-TRY-EXT-CTRLS; were added, a flag to skip unsupported
-controls with &VIDIOC-QUERYCTRL;, new control types
-<constant>V4L2_CTRL_TYPE_INTEGER64</constant> and
-<constant>V4L2_CTRL_TYPE_CTRL_CLASS</constant> (<xref
- linkend="v4l2-ctrl-type" />), and new control flags
-<constant>V4L2_CTRL_FLAG_READ_ONLY</constant>,
-<constant>V4L2_CTRL_FLAG_UPDATE</constant>,
-<constant>V4L2_CTRL_FLAG_INACTIVE</constant> and
-<constant>V4L2_CTRL_FLAG_SLIDER</constant> (<xref
- linkend="control-flags" />). See <xref
- linkend="extended-controls" /> for details.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.19</title>
- <orderedlist>
- <listitem>
- <para>In &v4l2-sliced-vbi-cap; a buffer type field was added
-replacing a reserved field. Note on architectures where the size of
-enum types differs from int types the size of the structure changed.
-The &VIDIOC-G-SLICED-VBI-CAP; ioctl was redefined from being read-only
-to write-read. Applications must initialize the type field and clear
-the reserved fields now. These changes may <emphasis>break the
-compatibility</emphasis> with older drivers and applications.</para>
- </listitem>
-
- <listitem>
- <para>The ioctls &VIDIOC-ENUM-FRAMESIZES; and
-&VIDIOC-ENUM-FRAMEINTERVALS; were added.</para>
- </listitem>
-
- <listitem>
- <para>A new pixel format <constant>V4L2_PIX_FMT_RGB444</constant> (<xref
-linkend="rgb-formats" />) was added.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 spec erratum 2006-10-12 (Draft 0.17)</title>
- <orderedlist>
- <listitem>
- <para><constant>V4L2_PIX_FMT_HM12</constant> (<xref
-linkend="reserved-formats" />) is a YUV 4:2:0, not 4:2:2 format.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.21</title>
- <orderedlist>
- <listitem>
- <para>The <filename>videodev2.h</filename> header file is
-now dual licensed under GNU General Public License version two or
-later, and under a 3-clause BSD-style license.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.22</title>
- <orderedlist>
- <listitem>
- <para>Two new field orders
- <constant>V4L2_FIELD_INTERLACED_TB</constant> and
- <constant>V4L2_FIELD_INTERLACED_BT</constant> were
- added. See <xref linkend="v4l2-field" /> for details.</para>
- </listitem>
-
- <listitem>
- <para>Three new clipping/blending methods with a global or
-straight or inverted local alpha value were added to the video overlay
-interface. See the description of the &VIDIOC-G-FBUF; and
-&VIDIOC-S-FBUF; ioctls for details.</para>
- <para>A new <structfield>global_alpha</structfield> field
-was added to <link
-linkend="v4l2-window"><structname>v4l2_window</structname></link>,
-extending the structure. This may <emphasis>break
-compatibility</emphasis> with applications using a struct
-<structname>v4l2_window</structname> directly. However the <link
-linkend="vidioc-g-fmt">VIDIOC_G/S/TRY_FMT</link> ioctls, which take a
-pointer to a <link linkend="v4l2-format">v4l2_format</link> parent
-structure with padding bytes at the end, are not affected.</para>
- </listitem>
-
- <listitem>
- <para>The format of the <structfield>chromakey</structfield>
-field in &v4l2-window; changed from "host order RGB32" to a pixel
-value in the same format as the framebuffer. This may <emphasis>break
-compatibility</emphasis> with existing applications. Drivers
-supporting the "host order RGB32" format are not known.</para>
- </listitem>
-
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.24</title>
- <orderedlist>
- <listitem>
- <para>The pixel formats
-<constant>V4L2_PIX_FMT_PAL8</constant>,
-<constant>V4L2_PIX_FMT_YUV444</constant>,
-<constant>V4L2_PIX_FMT_YUV555</constant>,
-<constant>V4L2_PIX_FMT_YUV565</constant> and
-<constant>V4L2_PIX_FMT_YUV32</constant> were added.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.25</title>
- <orderedlist>
- <listitem>
- <para>The pixel formats <link linkend="V4L2-PIX-FMT-Y16">
-<constant>V4L2_PIX_FMT_Y16</constant></link> and <link
-linkend="V4L2-PIX-FMT-SBGGR16">
-<constant>V4L2_PIX_FMT_SBGGR16</constant></link> were added.</para>
- </listitem>
- <listitem>
- <para>New <link linkend="control">controls</link>
-<constant>V4L2_CID_POWER_LINE_FREQUENCY</constant>,
-<constant>V4L2_CID_HUE_AUTO</constant>,
-<constant>V4L2_CID_WHITE_BALANCE_TEMPERATURE</constant>,
-<constant>V4L2_CID_SHARPNESS</constant> and
-<constant>V4L2_CID_BACKLIGHT_COMPENSATION</constant> were added. The
-controls <constant>V4L2_CID_BLACK_LEVEL</constant>,
-<constant>V4L2_CID_WHITENESS</constant>,
-<constant>V4L2_CID_HCENTER</constant> and
-<constant>V4L2_CID_VCENTER</constant> were deprecated.
-</para>
- </listitem>
- <listitem>
- <para>A <link linkend="camera-controls">Camera controls
-class</link> was added, with the new controls
-<constant>V4L2_CID_EXPOSURE_AUTO</constant>,
-<constant>V4L2_CID_EXPOSURE_ABSOLUTE</constant>,
-<constant>V4L2_CID_EXPOSURE_AUTO_PRIORITY</constant>,
-<constant>V4L2_CID_PAN_RELATIVE</constant>,
-<constant>V4L2_CID_TILT_RELATIVE</constant>,
-<constant>V4L2_CID_PAN_RESET</constant>,
-<constant>V4L2_CID_TILT_RESET</constant>,
-<constant>V4L2_CID_PAN_ABSOLUTE</constant>,
-<constant>V4L2_CID_TILT_ABSOLUTE</constant>,
-<constant>V4L2_CID_FOCUS_ABSOLUTE</constant>,
-<constant>V4L2_CID_FOCUS_RELATIVE</constant> and
-<constant>V4L2_CID_FOCUS_AUTO</constant>.</para>
- </listitem>
- <listitem>
- <para>The <constant>VIDIOC_G_MPEGCOMP</constant> and
-<constant>VIDIOC_S_MPEGCOMP</constant> ioctls, which were superseded
-by the <link linkend="extended-controls">extended controls</link>
-interface in Linux 2.6.18, where finally removed from the
-<filename>videodev2.h</filename> header file.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.26</title>
- <orderedlist>
- <listitem>
- <para>The pixel formats
-<constant>V4L2_PIX_FMT_Y16</constant> and
-<constant>V4L2_PIX_FMT_SBGGR16</constant> were added.</para>
- </listitem>
- <listitem>
- <para>Added user controls
-<constant>V4L2_CID_CHROMA_AGC</constant> and
-<constant>V4L2_CID_COLOR_KILLER</constant>.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.27</title>
- <orderedlist>
- <listitem>
- <para>The &VIDIOC-S-HW-FREQ-SEEK; ioctl and the
-<constant>V4L2_CAP_HW_FREQ_SEEK</constant> capability were added.</para>
- </listitem>
- <listitem>
- <para>The pixel formats
-<constant>V4L2_PIX_FMT_YVYU</constant>,
-<constant>V4L2_PIX_FMT_PCA501</constant>,
-<constant>V4L2_PIX_FMT_PCA505</constant>,
-<constant>V4L2_PIX_FMT_PCA508</constant>,
-<constant>V4L2_PIX_FMT_PCA561</constant>,
-<constant>V4L2_PIX_FMT_SGBRG8</constant>,
-<constant>V4L2_PIX_FMT_PAC207</constant> and
-<constant>V4L2_PIX_FMT_PJPG</constant> were added.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.28</title>
- <orderedlist>
- <listitem>
- <para>Added <constant>V4L2_MPEG_AUDIO_ENCODING_AAC</constant> and
-<constant>V4L2_MPEG_AUDIO_ENCODING_AC3</constant> MPEG audio encodings.</para>
- </listitem>
- <listitem>
- <para>Added <constant>V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC</constant> MPEG
-video encoding.</para>
- </listitem>
- <listitem>
- <para>The pixel formats
-<constant>V4L2_PIX_FMT_SGRBG10</constant> and
-<constant>V4L2_PIX_FMT_SGRBG10DPCM8</constant> were added.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section>
- <title>V4L2 in Linux 2.6.29</title>
- <orderedlist>
- <listitem>
- <para>The <constant>VIDIOC_G_CHIP_IDENT</constant> ioctl was renamed
-to <constant>VIDIOC_G_CHIP_IDENT_OLD</constant> and &VIDIOC-DBG-G-CHIP-IDENT;
-was introduced in its place. The old struct <structname>v4l2_chip_ident</structname>
-was renamed to <structname id="v4l2-chip-ident-old">v4l2_chip_ident_old</structname>.</para>
- </listitem>
- <listitem>
- <para>The pixel formats
-<constant>V4L2_PIX_FMT_VYUY</constant>,
-<constant>V4L2_PIX_FMT_NV16</constant> and
-<constant>V4L2_PIX_FMT_NV61</constant> were added.</para>
- </listitem>
- <listitem>
- <para>Added camera controls
-<constant>V4L2_CID_ZOOM_ABSOLUTE</constant>,
-<constant>V4L2_CID_ZOOM_RELATIVE</constant>,
-<constant>V4L2_CID_ZOOM_CONTINUOUS</constant> and
-<constant>V4L2_CID_PRIVACY</constant>.</para>
- </listitem>
- </orderedlist>
- </section>
- <section>
- <title>V4L2 in Linux 2.6.30</title>
- <orderedlist>
- <listitem>
- <para>New control flag <constant>V4L2_CTRL_FLAG_WRITE_ONLY</constant> was added.</para>
- </listitem>
- <listitem>
- <para>New control <constant>V4L2_CID_COLORFX</constant> was added.</para>
- </listitem>
- </orderedlist>
- </section>
- <section>
- <title>V4L2 in Linux 2.6.32</title>
- <orderedlist>
- <listitem>
- <para>In order to be easier to compare a V4L2 API and a kernel
-version, now V4L2 API is numbered using the Linux Kernel version numeration.</para>
- </listitem>
- <listitem>
- <para>Finalized the RDS capture API. See <xref linkend="rds" /> for
-more information.</para>
- </listitem>
- <listitem>
- <para>Added new capabilities for modulators and RDS encoders.</para>
- </listitem>
- <listitem>
- <para>Add description for libv4l API.</para>
- </listitem>
- <listitem>
- <para>Added support for string controls via new type <constant>V4L2_CTRL_TYPE_STRING</constant>.</para>
- </listitem>
- <listitem>
- <para>Added <constant>V4L2_CID_BAND_STOP_FILTER</constant> documentation.</para>
- </listitem>
- <listitem>
- <para>Added FM Modulator (FM TX) Extended Control Class: <constant>V4L2_CTRL_CLASS_FM_TX</constant> and their Control IDs.</para>
- </listitem>
- <listitem>
- <para>Added Remote Controller chapter, describing the default Remote Controller mapping for media devices.</para>
- </listitem>
- </orderedlist>
- </section>
- <section>
- <title>V4L2 in Linux 2.6.33</title>
- <orderedlist>
- <listitem>
- <para>Added support for Digital Video timings in order to support HDTV receivers and transmitters.</para>
- </listitem>
- </orderedlist>
- </section>
- <section>
- <title>V4L2 in Linux 2.6.34</title>
- <orderedlist>
- <listitem>
- <para>Added
-<constant>V4L2_CID_IRIS_ABSOLUTE</constant> and
-<constant>V4L2_CID_IRIS_RELATIVE</constant> controls to the
- <link linkend="camera-controls">Camera controls class</link>.
- </para>
- </listitem>
- </orderedlist>
- </section>
- <section>
- <title>V4L2 in Linux 2.6.37</title>
- <orderedlist>
- <listitem>
- <para>Remove the vtx (videotext/teletext) API. This API was no longer
-used and no hardware exists to verify the API. Nor were any userspace applications found
-that used it. It was originally scheduled for removal in 2.6.35.
- </para>
- </listitem>
- </orderedlist>
- </section>
- <section>
- <title>V4L2 in Linux 2.6.39</title>
- <orderedlist>
- <listitem>
- <para>The old VIDIOC_*_OLD symbols and V4L1 support were removed.</para>
- </listitem>
- <listitem>
- <para>Multi-planar API added. Does not affect the compatibility of
- current drivers and applications. See
- <link linkend="planar-apis">multi-planar API</link>
- for details.</para>
- </listitem>
- </orderedlist>
- </section>
-
- <section id="other">
- <title>Relation of V4L2 to other Linux multimedia APIs</title>
-
- <section id="xvideo">
- <title>X Video Extension</title>
-
- <para>The X Video Extension (abbreviated XVideo or just Xv) is
-an extension of the X Window system, implemented for example by the
-XFree86 project. Its scope is similar to V4L2, an API to video capture
-and output devices for X clients. Xv allows applications to display
-live video in a window, send window contents to a TV output, and
-capture or output still images in XPixmaps<footnote>
- <para>This is not implemented in XFree86.</para>
- </footnote>. With their implementation XFree86 makes the
-extension available across many operating systems and
-architectures.</para>
-
- <para>Because the driver is embedded into the X server Xv has a
-number of advantages over the V4L2 <link linkend="overlay">video
-overlay interface</link>. The driver can easily determine the overlay
-target, &ie; visible graphics memory or off-screen buffers for a
-destructive overlay. It can program the RAMDAC for a non-destructive
-overlay, scaling or color-keying, or the clipping functions of the
-video capture hardware, always in sync with drawing operations or
-windows moving or changing their stacking order.</para>
-
- <para>To combine the advantages of Xv and V4L a special Xv
-driver exists in XFree86 and XOrg, just programming any overlay capable
-Video4Linux device it finds. To enable it
-<filename>/etc/X11/XF86Config</filename> must contain these lines:</para>
- <para><screen>
-Section "Module"
- Load "v4l"
-EndSection</screen></para>
-
- <para>As of XFree86 4.2 this driver still supports only V4L
-ioctls, however it should work just fine with all V4L2 devices through
-the V4L2 backward-compatibility layer. Since V4L2 permits multiple
-opens it is possible (if supported by the V4L2 driver) to capture
-video while an X client requested video overlay. Restrictions of
-simultaneous capturing and overlay are discussed in <xref
- linkend="overlay" /> apply.</para>
-
- <para>Only marginally related to V4L2, XFree86 extended Xv to
-support hardware YUV to RGB conversion and scaling for faster video
-playback, and added an interface to MPEG-2 decoding hardware. This API
-is useful to display images captured with V4L2 devices.</para>
- </section>
-
- <section>
- <title>Digital Video</title>
-
- <para>V4L2 does not support digital terrestrial, cable or
-satellite broadcast. A separate project aiming at digital receivers
-exists. You can find its homepage at <ulink
-url="http://linuxtv.org">http://linuxtv.org</ulink>. The Linux DVB API
-has no connection to the V4L2 API except that drivers for hybrid
-hardware may support both.</para>
- </section>
-
- <section>
- <title>Audio Interfaces</title>
-
- <para>[to do - OSS/ALSA]</para>
- </section>
- </section>
-
- <section id="experimental">
- <title>Experimental API Elements</title>
-
- <para>The following V4L2 API elements are currently experimental
-and may change in the future.</para>
-
- <itemizedlist>
- <listitem>
- <para>Video Output Overlay (OSD) Interface, <xref
- linkend="osd" />.</para>
- </listitem>
- <listitem>
- <para><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY</constant>,
- &v4l2-buf-type;, <xref linkend="v4l2-buf-type" />.</para>
- </listitem>
- <listitem>
- <para><constant>V4L2_CAP_VIDEO_OUTPUT_OVERLAY</constant>,
-&VIDIOC-QUERYCAP; ioctl, <xref linkend="device-capabilities" />.</para>
- </listitem>
- <listitem>
- <para>&VIDIOC-ENUM-FRAMESIZES; and
-&VIDIOC-ENUM-FRAMEINTERVALS; ioctls.</para>
- </listitem>
- <listitem>
- <para>&VIDIOC-G-ENC-INDEX; ioctl.</para>
- </listitem>
- <listitem>
- <para>&VIDIOC-ENCODER-CMD; and &VIDIOC-TRY-ENCODER-CMD;
-ioctls.</para>
- </listitem>
- <listitem>
- <para>&VIDIOC-DBG-G-REGISTER; and &VIDIOC-DBG-S-REGISTER;
-ioctls.</para>
- </listitem>
- <listitem>
- <para>&VIDIOC-DBG-G-CHIP-IDENT; ioctl.</para>
- </listitem>
- </itemizedlist>
- </section>
-
- <section id="obsolete">
- <title>Obsolete API Elements</title>
-
- <para>The following V4L2 API elements were superseded by new
-interfaces and should not be implemented in new drivers.</para>
-
- <itemizedlist>
- <listitem>
- <para><constant>VIDIOC_G_MPEGCOMP</constant> and
-<constant>VIDIOC_S_MPEGCOMP</constant> ioctls. Use Extended Controls,
-<xref linkend="extended-controls" />.</para>
- </listitem>
- </itemizedlist>
- </section>
- </section>
-
- <!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
- -->
diff --git a/Documentation/DocBook/v4l/controls.xml b/Documentation/DocBook/v4l/controls.xml
deleted file mode 100644
index a920ee8..0000000
--- a/Documentation/DocBook/v4l/controls.xml
+++ /dev/null
@@ -1,2103 +0,0 @@
- <section id="control">
- <title>User Controls</title>
-
- <para>Devices typically have a number of user-settable controls
-such as brightness, saturation and so on, which would be presented to
-the user on a graphical user interface. But, different devices
-will have different controls available, and furthermore, the range of
-possible values, and the default value will vary from device to
-device. The control ioctls provide the information and a mechanism to
-create a nice user interface for these controls that will work
-correctly with any device.</para>
-
- <para>All controls are accessed using an ID value. V4L2 defines
-several IDs for specific purposes. Drivers can also implement their
-own custom controls using <constant>V4L2_CID_PRIVATE_BASE</constant>
-and higher values. The pre-defined control IDs have the prefix
-<constant>V4L2_CID_</constant>, and are listed in <xref
-linkend="control-id" />. The ID is used when querying the attributes of
-a control, and when getting or setting the current value.</para>
-
- <para>Generally applications should present controls to the user
-without assumptions about their purpose. Each control comes with a
-name string the user is supposed to understand. When the purpose is
-non-intuitive the driver writer should provide a user manual, a user
-interface plug-in or a driver specific panel application. Predefined
-IDs were introduced to change a few controls programmatically, for
-example to mute a device during a channel switch.</para>
-
- <para>Drivers may enumerate different controls after switching
-the current video input or output, tuner or modulator, or audio input
-or output. Different in the sense of other bounds, another default and
-current value, step size or other menu items. A control with a certain
-<emphasis>custom</emphasis> ID can also change name and
-type.<footnote>
- <para>It will be more convenient for applications if drivers
-make use of the <constant>V4L2_CTRL_FLAG_DISABLED</constant> flag, but
-that was never required.</para>
- </footnote> Control values are stored globally, they do not
-change when switching except to stay within the reported bounds. They
-also do not change ⪚ when the device is opened or closed, when the
-tuner radio frequency is changed or generally never without
-application request. Since V4L2 specifies no event mechanism, panel
-applications intended to cooperate with other panel applications (be
-they built into a larger application, as a TV viewer) may need to
-regularly poll control values to update their user
-interface.<footnote>
- <para>Applications could call an ioctl to request events.
-After another process called &VIDIOC-S-CTRL; or another ioctl changing
-shared properties the &func-select; function would indicate
-readability until any ioctl (querying the properties) is
-called.</para>
- </footnote></para>
-
- <table pgwide="1" frame="none" id="control-id">
- <title>Control IDs</title>
- <tgroup cols="3">
- &cs-def;
- <thead>
- <row>
- <entry>ID</entry>
- <entry>Type</entry>
- <entry>Description</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_CID_BASE</constant></entry>
- <entry></entry>
- <entry>First predefined ID, equal to
-<constant>V4L2_CID_BRIGHTNESS</constant>.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_USER_BASE</constant></entry>
- <entry></entry>
- <entry>Synonym of <constant>V4L2_CID_BASE</constant>.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_BRIGHTNESS</constant></entry>
- <entry>integer</entry>
- <entry>Picture brightness, or more precisely, the black
-level.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_CONTRAST</constant></entry>
- <entry>integer</entry>
- <entry>Picture contrast or luma gain.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_SATURATION</constant></entry>
- <entry>integer</entry>
- <entry>Picture color saturation or chroma gain.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_HUE</constant></entry>
- <entry>integer</entry>
- <entry>Hue or color balance.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_AUDIO_VOLUME</constant></entry>
- <entry>integer</entry>
- <entry>Overall audio volume. Note some drivers also
-provide an OSS or ALSA mixer interface.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_AUDIO_BALANCE</constant></entry>
- <entry>integer</entry>
- <entry>Audio stereo balance. Minimum corresponds to all
-the way left, maximum to right.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_AUDIO_BASS</constant></entry>
- <entry>integer</entry>
- <entry>Audio bass adjustment.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_AUDIO_TREBLE</constant></entry>
- <entry>integer</entry>
- <entry>Audio treble adjustment.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_AUDIO_MUTE</constant></entry>
- <entry>boolean</entry>
- <entry>Mute audio, &ie; set the volume to zero, however
-without affecting <constant>V4L2_CID_AUDIO_VOLUME</constant>. Like
-ALSA drivers, V4L2 drivers must mute at load time to avoid excessive
-noise. Actually the entire device should be reset to a low power
-consumption state.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_AUDIO_LOUDNESS</constant></entry>
- <entry>boolean</entry>
- <entry>Loudness mode (bass boost).</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_BLACK_LEVEL</constant></entry>
- <entry>integer</entry>
- <entry>Another name for brightness (not a synonym of
-<constant>V4L2_CID_BRIGHTNESS</constant>). This control is deprecated
-and should not be used in new drivers and applications.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_AUTO_WHITE_BALANCE</constant></entry>
- <entry>boolean</entry>
- <entry>Automatic white balance (cameras).</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_DO_WHITE_BALANCE</constant></entry>
- <entry>button</entry>
- <entry>This is an action control. When set (the value is
-ignored), the device will do a white balance and then hold the current
-setting. Contrast this with the boolean
-<constant>V4L2_CID_AUTO_WHITE_BALANCE</constant>, which, when
-activated, keeps adjusting the white balance.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_RED_BALANCE</constant></entry>
- <entry>integer</entry>
- <entry>Red chroma balance.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_BLUE_BALANCE</constant></entry>
- <entry>integer</entry>
- <entry>Blue chroma balance.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_GAMMA</constant></entry>
- <entry>integer</entry>
- <entry>Gamma adjust.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_WHITENESS</constant></entry>
- <entry>integer</entry>
- <entry>Whiteness for grey-scale devices. This is a synonym
-for <constant>V4L2_CID_GAMMA</constant>. This control is deprecated
-and should not be used in new drivers and applications.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_EXPOSURE</constant></entry>
- <entry>integer</entry>
- <entry>Exposure (cameras). [Unit?]</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_AUTOGAIN</constant></entry>
- <entry>boolean</entry>
- <entry>Automatic gain/exposure control.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_GAIN</constant></entry>
- <entry>integer</entry>
- <entry>Gain control.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_HFLIP</constant></entry>
- <entry>boolean</entry>
- <entry>Mirror the picture horizontally.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_VFLIP</constant></entry>
- <entry>boolean</entry>
- <entry>Mirror the picture vertically.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_HCENTER_DEPRECATED</constant> (formerly <constant>V4L2_CID_HCENTER</constant>)</entry>
- <entry>integer</entry>
- <entry>Horizontal image centering. This control is
-deprecated. New drivers and applications should use the <link
-linkend="camera-controls">Camera class controls</link>
-<constant>V4L2_CID_PAN_ABSOLUTE</constant>,
-<constant>V4L2_CID_PAN_RELATIVE</constant> and
-<constant>V4L2_CID_PAN_RESET</constant> instead.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_VCENTER_DEPRECATED</constant>
- (formerly <constant>V4L2_CID_VCENTER</constant>)</entry>
- <entry>integer</entry>
- <entry>Vertical image centering. Centering is intended to
-<emphasis>physically</emphasis> adjust cameras. For image cropping see
-<xref linkend="crop" />, for clipping <xref linkend="overlay" />. This
-control is deprecated. New drivers and applications should use the
-<link linkend="camera-controls">Camera class controls</link>
-<constant>V4L2_CID_TILT_ABSOLUTE</constant>,
-<constant>V4L2_CID_TILT_RELATIVE</constant> and
-<constant>V4L2_CID_TILT_RESET</constant> instead.</entry>
- </row>
- <row id="v4l2-power-line-frequency">
- <entry><constant>V4L2_CID_POWER_LINE_FREQUENCY</constant></entry>
- <entry>enum</entry>
- <entry>Enables a power line frequency filter to avoid
-flicker. Possible values for <constant>enum v4l2_power_line_frequency</constant> are:
-<constant>V4L2_CID_POWER_LINE_FREQUENCY_DISABLED</constant> (0),
-<constant>V4L2_CID_POWER_LINE_FREQUENCY_50HZ</constant> (1) and
-<constant>V4L2_CID_POWER_LINE_FREQUENCY_60HZ</constant> (2).</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_HUE_AUTO</constant></entry>
- <entry>boolean</entry>
- <entry>Enables automatic hue control by the device. The
-effect of setting <constant>V4L2_CID_HUE</constant> while automatic
-hue control is enabled is undefined, drivers should ignore such
-request.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_WHITE_BALANCE_TEMPERATURE</constant></entry>
- <entry>integer</entry>
- <entry>This control specifies the white balance settings
-as a color temperature in Kelvin. A driver should have a minimum of
-2800 (incandescent) to 6500 (daylight). For more information about
-color temperature see <ulink
-url="http://en.wikipedia.org/wiki/Color_temperature">Wikipedia</ulink>.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_SHARPNESS</constant></entry>
- <entry>integer</entry>
- <entry>Adjusts the sharpness filters in a camera. The
-minimum value disables the filters, higher values give a sharper
-picture.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_BACKLIGHT_COMPENSATION</constant></entry>
- <entry>integer</entry>
- <entry>Adjusts the backlight compensation in a camera. The
-minimum value disables backlight compensation.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_CHROMA_AGC</constant></entry>
- <entry>boolean</entry>
- <entry>Chroma automatic gain control.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_CHROMA_GAIN</constant></entry>
- <entry>integer</entry>
- <entry>Adjusts the Chroma gain control (for use when chroma AGC
- is disabled).</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_COLOR_KILLER</constant></entry>
- <entry>boolean</entry>
- <entry>Enable the color killer (&ie; force a black & white image in case of a weak video signal).</entry>
- </row>
- <row id="v4l2-colorfx">
- <entry><constant>V4L2_CID_COLORFX</constant></entry>
- <entry>enum</entry>
- <entry>Selects a color effect. Possible values for
-<constant>enum v4l2_colorfx</constant> are:
-<constant>V4L2_COLORFX_NONE</constant> (0),
-<constant>V4L2_COLORFX_BW</constant> (1),
-<constant>V4L2_COLORFX_SEPIA</constant> (2),
-<constant>V4L2_COLORFX_NEGATIVE</constant> (3),
-<constant>V4L2_COLORFX_EMBOSS</constant> (4),
-<constant>V4L2_COLORFX_SKETCH</constant> (5),
-<constant>V4L2_COLORFX_SKY_BLUE</constant> (6),
-<constant>V4L2_COLORFX_GRASS_GREEN</constant> (7),
-<constant>V4L2_COLORFX_SKIN_WHITEN</constant> (8) and
-<constant>V4L2_COLORFX_VIVID</constant> (9).</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_ROTATE</constant></entry>
- <entry>integer</entry>
- <entry>Rotates the image by specified angle. Common angles are 90,
- 270 and 180. Rotating the image to 90 and 270 will reverse the height
- and width of the display window. It is necessary to set the new height and
- width of the picture using the &VIDIOC-S-FMT; ioctl according to
- the rotation angle selected.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_BG_COLOR</constant></entry>
- <entry>integer</entry>
- <entry>Sets the background color on the current output device.
- Background color needs to be specified in the RGB24 format. The
- supplied 32 bit value is interpreted as bits 0-7 Red color information,
- bits 8-15 Green color information, bits 16-23 Blue color
- information and bits 24-31 must be zero.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_ILLUMINATORS_1</constant>
- <constant>V4L2_CID_ILLUMINATORS_2</constant></entry>
- <entry>boolean</entry>
- <entry>Switch on or off the illuminator 1 or 2 of the device
- (usually a microscope).</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_LASTP1</constant></entry>
- <entry></entry>
- <entry>End of the predefined control IDs (currently
-<constant>V4L2_CID_ILLUMINATORS_2</constant> + 1).</entry>
- </row>
- <row>
- <entry><constant>V4L2_CID_PRIVATE_BASE</constant></entry>
- <entry></entry>
- <entry>ID of the first custom (driver specific) control.
-Applications depending on particular custom controls should check the
-driver name and version, see <xref linkend="querycap" />.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <para>Applications can enumerate the available controls with the
-&VIDIOC-QUERYCTRL; and &VIDIOC-QUERYMENU; ioctls, get and set a
-control value with the &VIDIOC-G-CTRL; and &VIDIOC-S-CTRL; ioctls.
-Drivers must implement <constant>VIDIOC_QUERYCTRL</constant>,
-<constant>VIDIOC_G_CTRL</constant> and
-<constant>VIDIOC_S_CTRL</constant> when the device has one or more
-controls, <constant>VIDIOC_QUERYMENU</constant> when it has one or
-more menu type controls.</para>
-
- <example>
- <title>Enumerating all controls</title>
-
- <programlisting>
-&v4l2-queryctrl; queryctrl;
-&v4l2-querymenu; querymenu;
-
-static void
-enumerate_menu (void)
-{
- printf (" Menu items:\n");
-
- memset (&querymenu, 0, sizeof (querymenu));
- querymenu.id = queryctrl.id;
-
- for (querymenu.index = queryctrl.minimum;
- querymenu.index <= queryctrl.maximum;
- querymenu.index++) {
- if (0 == ioctl (fd, &VIDIOC-QUERYMENU;, &querymenu)) {
- printf (" %s\n", querymenu.name);
- }
- }
-}
-
-memset (&queryctrl, 0, sizeof (queryctrl));
-
-for (queryctrl.id = V4L2_CID_BASE;
- queryctrl.id < V4L2_CID_LASTP1;
- queryctrl.id++) {
- if (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &queryctrl)) {
- if (queryctrl.flags & V4L2_CTRL_FLAG_DISABLED)
- continue;
-
- printf ("Control %s\n", queryctrl.name);
-
- if (queryctrl.type == V4L2_CTRL_TYPE_MENU)
- enumerate_menu ();
- } else {
- if (errno == EINVAL)
- continue;
-
- perror ("VIDIOC_QUERYCTRL");
- exit (EXIT_FAILURE);
- }
-}
-
-for (queryctrl.id = V4L2_CID_PRIVATE_BASE;;
- queryctrl.id++) {
- if (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &queryctrl)) {
- if (queryctrl.flags & V4L2_CTRL_FLAG_DISABLED)
- continue;
-
- printf ("Control %s\n", queryctrl.name);
-
- if (queryctrl.type == V4L2_CTRL_TYPE_MENU)
- enumerate_menu ();
- } else {
- if (errno == EINVAL)
- break;
-
- perror ("VIDIOC_QUERYCTRL");
- exit (EXIT_FAILURE);
- }
-}
-</programlisting>
- </example>
-
- <example>
- <title>Changing controls</title>
-
- <programlisting>
-&v4l2-queryctrl; queryctrl;
-&v4l2-control; control;
-
-memset (&queryctrl, 0, sizeof (queryctrl));
-queryctrl.id = V4L2_CID_BRIGHTNESS;
-
-if (-1 == ioctl (fd, &VIDIOC-QUERYCTRL;, &queryctrl)) {
- if (errno != EINVAL) {
- perror ("VIDIOC_QUERYCTRL");
- exit (EXIT_FAILURE);
- } else {
- printf ("V4L2_CID_BRIGHTNESS is not supported\n");
- }
-} else if (queryctrl.flags & V4L2_CTRL_FLAG_DISABLED) {
- printf ("V4L2_CID_BRIGHTNESS is not supported\n");
-} else {
- memset (&control, 0, sizeof (control));
- control.id = V4L2_CID_BRIGHTNESS;
- control.value = queryctrl.default_value;
-
- if (-1 == ioctl (fd, &VIDIOC-S-CTRL;, &control)) {
- perror ("VIDIOC_S_CTRL");
- exit (EXIT_FAILURE);
- }
-}
-
-memset (&control, 0, sizeof (control));
-control.id = V4L2_CID_CONTRAST;
-
-if (0 == ioctl (fd, &VIDIOC-G-CTRL;, &control)) {
- control.value += 1;
-
- /* The driver may clamp the value or return ERANGE, ignored here */
-
- if (-1 == ioctl (fd, &VIDIOC-S-CTRL;, &control)
- && errno != ERANGE) {
- perror ("VIDIOC_S_CTRL");
- exit (EXIT_FAILURE);
- }
-/* Ignore if V4L2_CID_CONTRAST is unsupported */
-} else if (errno != EINVAL) {
- perror ("VIDIOC_G_CTRL");
- exit (EXIT_FAILURE);
-}
-
-control.id = V4L2_CID_AUDIO_MUTE;
-control.value = TRUE; /* silence */
-
-/* Errors ignored */
-ioctl (fd, VIDIOC_S_CTRL, &control);
-</programlisting>
- </example>
- </section>
-
- <section id="extended-controls">
- <title>Extended Controls</title>
-
- <section>
- <title>Introduction</title>
-
- <para>The control mechanism as originally designed was meant
-to be used for user settings (brightness, saturation, etc). However,
-it turned out to be a very useful model for implementing more
-complicated driver APIs where each driver implements only a subset of
-a larger API.</para>
-
- <para>The MPEG encoding API was the driving force behind
-designing and implementing this extended control mechanism: the MPEG
-standard is quite large and the currently supported hardware MPEG
-encoders each only implement a subset of this standard. Further more,
-many parameters relating to how the video is encoded into an MPEG
-stream are specific to the MPEG encoding chip since the MPEG standard
-only defines the format of the resulting MPEG stream, not how the
-video is actually encoded into that format.</para>
-
- <para>Unfortunately, the original control API lacked some
-features needed for these new uses and so it was extended into the
-(not terribly originally named) extended control API.</para>
-
- <para>Even though the MPEG encoding API was the first effort
-to use the Extended Control API, nowadays there are also other classes
-of Extended Controls, such as Camera Controls and FM Transmitter Controls.
-The Extended Controls API as well as all Extended Controls classes are
-described in the following text.</para>
- </section>
-
- <section>
- <title>The Extended Control API</title>
-
- <para>Three new ioctls are available: &VIDIOC-G-EXT-CTRLS;,
-&VIDIOC-S-EXT-CTRLS; and &VIDIOC-TRY-EXT-CTRLS;. These ioctls act on
-arrays of controls (as opposed to the &VIDIOC-G-CTRL; and
-&VIDIOC-S-CTRL; ioctls that act on a single control). This is needed
-since it is often required to atomically change several controls at
-once.</para>
-
- <para>Each of the new ioctls expects a pointer to a
-&v4l2-ext-controls;. This structure contains a pointer to the control
-array, a count of the number of controls in that array and a control
-class. Control classes are used to group similar controls into a
-single class. For example, control class
-<constant>V4L2_CTRL_CLASS_USER</constant> contains all user controls
-(&ie; all controls that can also be set using the old
-<constant>VIDIOC_S_CTRL</constant> ioctl). Control class
-<constant>V4L2_CTRL_CLASS_MPEG</constant> contains all controls
-relating to MPEG encoding, etc.</para>
-
- <para>All controls in the control array must belong to the
-specified control class. An error is returned if this is not the
-case.</para>
-
- <para>It is also possible to use an empty control array (count
-== 0) to check whether the specified control class is
-supported.</para>
-
- <para>The control array is a &v4l2-ext-control; array. The
-<structname>v4l2_ext_control</structname> structure is very similar to
-&v4l2-control;, except for the fact that it also allows for 64-bit
-values and pointers to be passed.</para>
-
- <para>It is important to realize that due to the flexibility of
-controls it is necessary to check whether the control you want to set
-actually is supported in the driver and what the valid range of values
-is. So use the &VIDIOC-QUERYCTRL; and &VIDIOC-QUERYMENU; ioctls to
-check this. Also note that it is possible that some of the menu
-indices in a control of type <constant>V4L2_CTRL_TYPE_MENU</constant>
-may not be supported (<constant>VIDIOC_QUERYMENU</constant> will
-return an error). A good example is the list of supported MPEG audio
-bitrates. Some drivers only support one or two bitrates, others
-support a wider range.</para>
- </section>
-
- <section>
- <title>Enumerating Extended Controls</title>
-
- <para>The recommended way to enumerate over the extended
-controls is by using &VIDIOC-QUERYCTRL; in combination with the
-<constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant> flag:</para>
-
- <informalexample>
- <programlisting>
-&v4l2-queryctrl; qctrl;
-
-qctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL;
-while (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &qctrl)) {
- /* ... */
- qctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
-}
-</programlisting>
- </informalexample>
-
- <para>The initial control ID is set to 0 ORed with the
-<constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant> flag. The
-<constant>VIDIOC_QUERYCTRL</constant> ioctl will return the first
-control with a higher ID than the specified one. When no such controls
-are found an error is returned.</para>
-
- <para>If you want to get all controls within a specific control
-class, then you can set the initial
-<structfield>qctrl.id</structfield> value to the control class and add
-an extra check to break out of the loop when a control of another
-control class is found:</para>
-
- <informalexample>
- <programlisting>
-qctrl.id = V4L2_CTRL_CLASS_MPEG | V4L2_CTRL_FLAG_NEXT_CTRL;
-while (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &qctrl)) {
- if (V4L2_CTRL_ID2CLASS (qctrl.id) != V4L2_CTRL_CLASS_MPEG)
- break;
- /* ... */
- qctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
- }
-</programlisting>
- </informalexample>
-
- <para>The 32-bit <structfield>qctrl.id</structfield> value is
-subdivided into three bit ranges: the top 4 bits are reserved for
-flags (⪚ <constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant>) and are not
-actually part of the ID. The remaining 28 bits form the control ID, of
-which the most significant 12 bits define the control class and the
-least significant 16 bits identify the control within the control
-class. It is guaranteed that these last 16 bits are always non-zero
-for controls. The range of 0x1000 and up are reserved for
-driver-specific controls. The macro
-<constant>V4L2_CTRL_ID2CLASS(id)</constant> returns the control class
-ID based on a control ID.</para>
-
- <para>If the driver does not support extended controls, then
-<constant>VIDIOC_QUERYCTRL</constant> will fail when used in
-combination with <constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant>. In
-that case the old method of enumerating control should be used (see
-1.8). But if it is supported, then it is guaranteed to enumerate over
-all controls, including driver-private controls.</para>
- </section>
-
- <section>
- <title>Creating Control Panels</title>
-
- <para>It is possible to create control panels for a graphical
-user interface where the user can select the various controls.
-Basically you will have to iterate over all controls using the method
-described above. Each control class starts with a control of type
-<constant>V4L2_CTRL_TYPE_CTRL_CLASS</constant>.
-<constant>VIDIOC_QUERYCTRL</constant> will return the name of this
-control class which can be used as the title of a tab page within a
-control panel.</para>
-
- <para>The flags field of &v4l2-queryctrl; also contains hints on
-the behavior of the control. See the &VIDIOC-QUERYCTRL; documentation
-for more details.</para>
- </section>
-
- <section id="mpeg-controls">
- <title>MPEG Control Reference</title>
-
- <para>Below all controls within the MPEG control class are
-described. First the generic controls, then controls specific for
-certain hardware.</para>
-
- <section>
- <title>Generic MPEG Controls</title>
-
- <table pgwide="1" frame="none" id="mpeg-control-id">
- <title>MPEG Control IDs</title>
- <tgroup cols="4">
- <colspec colname="c1" colwidth="1*" />
- <colspec colname="c2" colwidth="6*" />
- <colspec colname="c3" colwidth="2*" />
- <colspec colname="c4" colwidth="6*" />
- <spanspec namest="c1" nameend="c2" spanname="id" />
- <spanspec namest="c2" nameend="c4" spanname="descr" />
- <thead>
- <row>
- <entry spanname="id" align="left">ID</entry>
- <entry align="left">Type</entry>
- </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_CLASS</constant> </entry>
- <entry>class</entry>
- </row><row><entry spanname="descr">The MPEG class
-descriptor. Calling &VIDIOC-QUERYCTRL; for this control will return a
-description of this control class. This description can be used as the
-caption of a Tab page in a GUI, for example.</entry>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-stream-type">
- <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_TYPE</constant> </entry>
- <entry>enum v4l2_mpeg_stream_type</entry>
- </row><row><entry spanname="descr">The MPEG-1, -2 or -4
-output stream type. One cannot assume anything here. Each hardware
-MPEG encoder tends to support different subsets of the available MPEG
-stream types. The currently defined stream types are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG2_PS</constant> </entry>
- <entry>MPEG-2 program stream</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG2_TS</constant> </entry>
- <entry>MPEG-2 transport stream</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG1_SS</constant> </entry>
- <entry>MPEG-1 system stream</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG2_DVD</constant> </entry>
- <entry>MPEG-2 DVD-compatible stream</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG1_VCD</constant> </entry>
- <entry>MPEG-1 VCD-compatible stream</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD</constant> </entry>
- <entry>MPEG-2 SVCD-compatible stream</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PID_PMT</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Program Map Table
-Packet ID for the MPEG transport stream (default 16)</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PID_AUDIO</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Audio Packet ID for
-the MPEG transport stream (default 256)</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PID_VIDEO</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Video Packet ID for
-the MPEG transport stream (default 260)</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PID_PCR</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Packet ID for the
-MPEG transport stream carrying PCR fields (default 259)</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PES_ID_AUDIO</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Audio ID for MPEG
-PES</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PES_ID_VIDEO</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Video ID for MPEG
-PES</entry>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-stream-vbi-fmt">
- <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_VBI_FMT</constant> </entry>
- <entry>enum v4l2_mpeg_stream_vbi_fmt</entry>
- </row><row><entry spanname="descr">Some cards can embed
-VBI data (⪚ Closed Caption, Teletext) into the MPEG stream. This
-control selects whether VBI data should be embedded, and if so, what
-embedding method should be used. The list of possible VBI formats
-depends on the driver. The currently defined VBI format types
-are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_STREAM_VBI_FMT_NONE</constant> </entry>
- <entry>No VBI in the MPEG stream</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_STREAM_VBI_FMT_IVTV</constant> </entry>
- <entry>VBI in private packets, IVTV format (documented
-in the kernel sources in the file <filename>Documentation/video4linux/cx2341x/README.vbi</filename>)</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-audio-sampling-freq">
- <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ</constant> </entry>
- <entry>enum v4l2_mpeg_audio_sampling_freq</entry>
- </row><row><entry spanname="descr">MPEG Audio sampling
-frequency. Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100</constant> </entry>
- <entry>44.1 kHz</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000</constant> </entry>
- <entry>48 kHz</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000</constant> </entry>
- <entry>32 kHz</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-audio-encoding">
- <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_ENCODING</constant> </entry>
- <entry>enum v4l2_mpeg_audio_encoding</entry>
- </row><row><entry spanname="descr">MPEG Audio encoding.
-Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_ENCODING_LAYER_1</constant> </entry>
- <entry>MPEG-1/2 Layer I encoding</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_ENCODING_LAYER_2</constant> </entry>
- <entry>MPEG-1/2 Layer II encoding</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_ENCODING_LAYER_3</constant> </entry>
- <entry>MPEG-1/2 Layer III encoding</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_ENCODING_AAC</constant> </entry>
- <entry>MPEG-2/4 AAC (Advanced Audio Coding)</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_ENCODING_AC3</constant> </entry>
- <entry>AC-3 aka ATSC A/52 encoding</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-audio-l1-bitrate">
- <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_L1_BITRATE</constant> </entry>
- <entry>enum v4l2_mpeg_audio_l1_bitrate</entry>
- </row><row><entry spanname="descr">MPEG-1/2 Layer I bitrate.
-Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_32K</constant> </entry>
- <entry>32 kbit/s</entry></row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_64K</constant> </entry>
- <entry>64 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_96K</constant> </entry>
- <entry>96 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_128K</constant> </entry>
- <entry>128 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_160K</constant> </entry>
- <entry>160 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_192K</constant> </entry>
- <entry>192 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_224K</constant> </entry>
- <entry>224 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_256K</constant> </entry>
- <entry>256 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_288K</constant> </entry>
- <entry>288 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_320K</constant> </entry>
- <entry>320 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_352K</constant> </entry>
- <entry>352 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_384K</constant> </entry>
- <entry>384 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_416K</constant> </entry>
- <entry>416 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_448K</constant> </entry>
- <entry>448 kbit/s</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-audio-l2-bitrate">
- <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_L2_BITRATE</constant> </entry>
- <entry>enum v4l2_mpeg_audio_l2_bitrate</entry>
- </row><row><entry spanname="descr">MPEG-1/2 Layer II bitrate.
-Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_32K</constant> </entry>
- <entry>32 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_48K</constant> </entry>
- <entry>48 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_56K</constant> </entry>
- <entry>56 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_64K</constant> </entry>
- <entry>64 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_80K</constant> </entry>
- <entry>80 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_96K</constant> </entry>
- <entry>96 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_112K</constant> </entry>
- <entry>112 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_128K</constant> </entry>
- <entry>128 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_160K</constant> </entry>
- <entry>160 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_192K</constant> </entry>
- <entry>192 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_224K</constant> </entry>
- <entry>224 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_256K</constant> </entry>
- <entry>256 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_320K</constant> </entry>
- <entry>320 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_384K</constant> </entry>
- <entry>384 kbit/s</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-audio-l3-bitrate">
- <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_L3_BITRATE</constant> </entry>
- <entry>enum v4l2_mpeg_audio_l3_bitrate</entry>
- </row><row><entry spanname="descr">MPEG-1/2 Layer III bitrate.
-Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_32K</constant> </entry>
- <entry>32 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_40K</constant> </entry>
- <entry>40 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_48K</constant> </entry>
- <entry>48 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_56K</constant> </entry>
- <entry>56 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_64K</constant> </entry>
- <entry>64 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_80K</constant> </entry>
- <entry>80 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_96K</constant> </entry>
- <entry>96 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_112K</constant> </entry>
- <entry>112 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_128K</constant> </entry>
- <entry>128 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_160K</constant> </entry>
- <entry>160 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_192K</constant> </entry>
- <entry>192 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_224K</constant> </entry>
- <entry>224 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_256K</constant> </entry>
- <entry>256 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_320K</constant> </entry>
- <entry>320 kbit/s</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_AAC_BITRATE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">AAC bitrate in bits per second.</entry>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-audio-ac3-bitrate">
- <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_AC3_BITRATE</constant> </entry>
- <entry>enum v4l2_mpeg_audio_ac3_bitrate</entry>
- </row><row><entry spanname="descr">AC-3 bitrate.
-Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_32K</constant> </entry>
- <entry>32 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_40K</constant> </entry>
- <entry>40 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_48K</constant> </entry>
- <entry>48 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_56K</constant> </entry>
- <entry>56 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_64K</constant> </entry>
- <entry>64 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_80K</constant> </entry>
- <entry>80 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_96K</constant> </entry>
- <entry>96 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_112K</constant> </entry>
- <entry>112 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_128K</constant> </entry>
- <entry>128 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_160K</constant> </entry>
- <entry>160 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_192K</constant> </entry>
- <entry>192 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_224K</constant> </entry>
- <entry>224 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_256K</constant> </entry>
- <entry>256 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_320K</constant> </entry>
- <entry>320 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_384K</constant> </entry>
- <entry>384 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_448K</constant> </entry>
- <entry>448 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_512K</constant> </entry>
- <entry>512 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_576K</constant> </entry>
- <entry>576 kbit/s</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_640K</constant> </entry>
- <entry>640 kbit/s</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-audio-mode">
- <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_MODE</constant> </entry>
- <entry>enum v4l2_mpeg_audio_mode</entry>
- </row><row><entry spanname="descr">MPEG Audio mode.
-Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_MODE_STEREO</constant> </entry>
- <entry>Stereo</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_MODE_JOINT_STEREO</constant> </entry>
- <entry>Joint Stereo</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_MODE_DUAL</constant> </entry>
- <entry>Bilingual</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_MODE_MONO</constant> </entry>
- <entry>Mono</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-audio-mode-extension">
- <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_MODE_EXTENSION</constant> </entry>
- <entry>enum v4l2_mpeg_audio_mode_extension</entry>
- </row><row><entry spanname="descr">Joint Stereo
-audio mode extension. In Layer I and II they indicate which subbands
-are in intensity stereo. All other subbands are coded in stereo. Layer
-III is not (yet) supported. Possible values
-are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4</constant> </entry>
- <entry>Subbands 4-31 in intensity stereo</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_8</constant> </entry>
- <entry>Subbands 8-31 in intensity stereo</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_12</constant> </entry>
- <entry>Subbands 12-31 in intensity stereo</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_16</constant> </entry>
- <entry>Subbands 16-31 in intensity stereo</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-audio-emphasis">
- <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_EMPHASIS</constant> </entry>
- <entry>enum v4l2_mpeg_audio_emphasis</entry>
- </row><row><entry spanname="descr">Audio Emphasis.
-Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_EMPHASIS_NONE</constant> </entry>
- <entry>None</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_EMPHASIS_50_DIV_15_uS</constant> </entry>
- <entry>50/15 microsecond emphasis</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17</constant> </entry>
- <entry>CCITT J.17</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-audio-crc">
- <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_CRC</constant> </entry>
- <entry>enum v4l2_mpeg_audio_crc</entry>
- </row><row><entry spanname="descr">CRC method. Possible
-values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_CRC_NONE</constant> </entry>
- <entry>None</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_AUDIO_CRC_CRC16</constant> </entry>
- <entry>16 bit parity check</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_MUTE</constant> </entry>
- <entry>boolean</entry>
- </row><row><entry spanname="descr">Mutes the audio when
-capturing. This is not done by muting audio hardware, which can still
-produce a slight hiss, but in the encoder itself, guaranteeing a fixed
-and reproducible audio bitstream. 0 = unmuted, 1 = muted.</entry>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-video-encoding">
- <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_ENCODING</constant> </entry>
- <entry>enum v4l2_mpeg_video_encoding</entry>
- </row><row><entry spanname="descr">MPEG Video encoding
-method. Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_VIDEO_ENCODING_MPEG_1</constant> </entry>
- <entry>MPEG-1 Video encoding</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_VIDEO_ENCODING_MPEG_2</constant> </entry>
- <entry>MPEG-2 Video encoding</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC</constant> </entry>
- <entry>MPEG-4 AVC (H.264) Video encoding</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-video-aspect">
- <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_ASPECT</constant> </entry>
- <entry>enum v4l2_mpeg_video_aspect</entry>
- </row><row><entry spanname="descr">Video aspect.
-Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_VIDEO_ASPECT_1x1</constant> </entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_VIDEO_ASPECT_4x3</constant> </entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_VIDEO_ASPECT_16x9</constant> </entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_VIDEO_ASPECT_221x100</constant> </entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_B_FRAMES</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Number of B-Frames
-(default 2)</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_GOP_SIZE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">GOP size (default
-12)</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_GOP_CLOSURE</constant> </entry>
- <entry>boolean</entry>
- </row><row><entry spanname="descr">GOP closure (default
-1)</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_PULLDOWN</constant> </entry>
- <entry>boolean</entry>
- </row><row><entry spanname="descr">Enable 3:2 pulldown
-(default 0)</entry>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-video-bitrate-mode">
- <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_BITRATE_MODE</constant> </entry>
- <entry>enum v4l2_mpeg_video_bitrate_mode</entry>
- </row><row><entry spanname="descr">Video bitrate mode.
-Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_VIDEO_BITRATE_MODE_VBR</constant> </entry>
- <entry>Variable bitrate</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_VIDEO_BITRATE_MODE_CBR</constant> </entry>
- <entry>Constant bitrate</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_BITRATE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Video bitrate in bits
-per second.</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_BITRATE_PEAK</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Peak video bitrate in
-bits per second. Must be larger or equal to the average video bitrate.
-It is ignored if the video bitrate mode is set to constant
-bitrate.</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">For every captured
-frame, skip this many subsequent frames (default 0).</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MUTE</constant> </entry>
- <entry>boolean</entry>
- </row>
- <row><entry spanname="descr">"Mutes" the video to a
-fixed color when capturing. This is useful for testing, to produce a
-fixed video bitstream. 0 = unmuted, 1 = muted.</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MUTE_YUV</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Sets the "mute" color
-of the video. The supplied 32-bit integer is interpreted as follows (bit
-0 = least significant bit):</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry>Bit 0:7</entry>
- <entry>V chrominance information</entry>
- </row>
- <row>
- <entry>Bit 8:15</entry>
- <entry>U chrominance information</entry>
- </row>
- <row>
- <entry>Bit 16:23</entry>
- <entry>Y luminance information</entry>
- </row>
- <row>
- <entry>Bit 24:31</entry>
- <entry>Must be zero.</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- </tbody>
- </tgroup>
- </table>
- </section>
-
- <section>
- <title>CX2341x MPEG Controls</title>
-
- <para>The following MPEG class controls deal with MPEG
-encoding settings that are specific to the Conexant CX23415 and
-CX23416 MPEG encoding chips.</para>
-
- <table pgwide="1" frame="none" id="cx2341x-control-id">
- <title>CX2341x Control IDs</title>
- <tgroup cols="4">
- <colspec colname="c1" colwidth="1*" />
- <colspec colname="c2" colwidth="6*" />
- <colspec colname="c3" colwidth="2*" />
- <colspec colname="c4" colwidth="6*" />
- <spanspec namest="c1" nameend="c2" spanname="id" />
- <spanspec namest="c2" nameend="c4" spanname="descr" />
- <thead>
- <row>
- <entry spanname="id" align="left">ID</entry>
- <entry align="left">Type</entry>
- </row><row><entry spanname="descr" align="left">Description</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row><entry></entry></row>
- <row id="v4l2-mpeg-cx2341x-video-spatial-filter-mode">
- <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE</constant> </entry>
- <entry>enum v4l2_mpeg_cx2341x_video_spatial_filter_mode</entry>
- </row><row><entry spanname="descr">Sets the Spatial
-Filter mode (default <constant>MANUAL</constant>). Possible values
-are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL</constant> </entry>
- <entry>Choose the filter manually</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO</constant> </entry>
- <entry>Choose the filter automatically</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER</constant> </entry>
- <entry>integer (0-15)</entry>
- </row><row><entry spanname="descr">The setting for the
-Spatial Filter. 0 = off, 15 = maximum. (Default is 0.)</entry>
- </row>
- <row><entry></entry></row>
- <row id="luma-spatial-filter-type">
- <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE</constant> </entry>
- <entry>enum v4l2_mpeg_cx2341x_video_luma_spatial_filter_type</entry>
- </row><row><entry spanname="descr">Select the algorithm
-to use for the Luma Spatial Filter (default
-<constant>1D_HOR</constant>). Possible values:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_OFF</constant> </entry>
- <entry>No filter</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_HOR</constant> </entry>
- <entry>One-dimensional horizontal</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_VERT</constant> </entry>
- <entry>One-dimensional vertical</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_HV_SEPARABLE</constant> </entry>
- <entry>Two-dimensional separable</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_SYM_NON_SEPARABLE</constant> </entry>
- <entry>Two-dimensional symmetrical
-non-separable</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row id="chroma-spatial-filter-type">
- <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE</constant> </entry>
- <entry>enum v4l2_mpeg_cx2341x_video_chroma_spatial_filter_type</entry>
- </row><row><entry spanname="descr">Select the algorithm
-for the Chroma Spatial Filter (default <constant>1D_HOR</constant>).
-Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_OFF</constant> </entry>
- <entry>No filter</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_1D_HOR</constant> </entry>
- <entry>One-dimensional horizontal</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-cx2341x-video-temporal-filter-mode">
- <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE</constant> </entry>
- <entry>enum v4l2_mpeg_cx2341x_video_temporal_filter_mode</entry>
- </row><row><entry spanname="descr">Sets the Temporal
-Filter mode (default <constant>MANUAL</constant>). Possible values
-are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL</constant> </entry>
- <entry>Choose the filter manually</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_AUTO</constant> </entry>
- <entry>Choose the filter automatically</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER</constant> </entry>
- <entry>integer (0-31)</entry>
- </row><row><entry spanname="descr">The setting for the
-Temporal Filter. 0 = off, 31 = maximum. (Default is 8 for full-scale
-capturing and 0 for scaled capturing.)</entry>
- </row>
- <row><entry></entry></row>
- <row id="v4l2-mpeg-cx2341x-video-median-filter-type">
- <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE</constant> </entry>
- <entry>enum v4l2_mpeg_cx2341x_video_median_filter_type</entry>
- </row><row><entry spanname="descr">Median Filter Type
-(default <constant>OFF</constant>). Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF</constant> </entry>
- <entry>No filter</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR</constant> </entry>
- <entry>Horizontal filter</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_VERT</constant> </entry>
- <entry>Vertical filter</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR_VERT</constant> </entry>
- <entry>Horizontal and vertical filter</entry>
- </row>
- <row>
- <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_DIAG</constant> </entry>
- <entry>Diagonal filter</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM</constant> </entry>
- <entry>integer (0-255)</entry>
- </row><row><entry spanname="descr">Threshold above which
-the luminance median filter is enabled (default 0)</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP</constant> </entry>
- <entry>integer (0-255)</entry>
- </row><row><entry spanname="descr">Threshold below which
-the luminance median filter is enabled (default 255)</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM</constant> </entry>
- <entry>integer (0-255)</entry>
- </row><row><entry spanname="descr">Threshold above which
-the chroma median filter is enabled (default 0)</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP</constant> </entry>
- <entry>integer (0-255)</entry>
- </row><row><entry spanname="descr">Threshold below which
-the chroma median filter is enabled (default 255)</entry>
- </row>
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS</constant> </entry>
- <entry>boolean</entry>
- </row>
- <row><entry spanname="descr">The CX2341X MPEG encoder
-can insert one empty MPEG-2 PES packet into the stream between every
-four video frames. The packet size is 2048 bytes, including the
-packet_start_code_prefix and stream_id fields. The stream_id is 0xBF
-(private stream 2). The payload consists of 0x00 bytes, to be filled
-in by the application. 0 = do not insert, 1 = insert packets.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </section>
- </section>
-
- <section id="camera-controls">
- <title>Camera Control Reference</title>
-
- <para>The Camera class includes controls for mechanical (or
-equivalent digital) features of a device such as controllable lenses
-or sensors.</para>
-
- <table pgwide="1" frame="none" id="camera-control-id">
- <title>Camera Control IDs</title>
- <tgroup cols="4">
- <colspec colname="c1" colwidth="1*" />
- <colspec colname="c2" colwidth="6*" />
- <colspec colname="c3" colwidth="2*" />
- <colspec colname="c4" colwidth="6*" />
- <spanspec namest="c1" nameend="c2" spanname="id" />
- <spanspec namest="c2" nameend="c4" spanname="descr" />
- <thead>
- <row>
- <entry spanname="id" align="left">ID</entry>
- <entry align="left">Type</entry>
- </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_CAMERA_CLASS</constant> </entry>
- <entry>class</entry>
- </row><row><entry spanname="descr">The Camera class
-descriptor. Calling &VIDIOC-QUERYCTRL; for this control will return a
-description of this control class.</entry>
- </row>
- <row><entry></entry></row>
-
- <row id="v4l2-exposure-auto-type">
- <entry spanname="id"><constant>V4L2_CID_EXPOSURE_AUTO</constant> </entry>
- <entry>enum v4l2_exposure_auto_type</entry>
- </row><row><entry spanname="descr">Enables automatic
-adjustments of the exposure time and/or iris aperture. The effect of
-manual changes of the exposure time or iris aperture while these
-features are enabled is undefined, drivers should ignore such
-requests. Possible values are:</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_EXPOSURE_AUTO</constant> </entry>
- <entry>Automatic exposure time, automatic iris
-aperture.</entry>
- </row>
- <row>
- <entry><constant>V4L2_EXPOSURE_MANUAL</constant> </entry>
- <entry>Manual exposure time, manual iris.</entry>
- </row>
- <row>
- <entry><constant>V4L2_EXPOSURE_SHUTTER_PRIORITY</constant> </entry>
- <entry>Manual exposure time, auto iris.</entry>
- </row>
- <row>
- <entry><constant>V4L2_EXPOSURE_APERTURE_PRIORITY</constant> </entry>
- <entry>Auto exposure time, manual iris.</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_EXPOSURE_ABSOLUTE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Determines the exposure
-time of the camera sensor. The exposure time is limited by the frame
-interval. Drivers should interpret the values as 100 µs units,
-where the value 1 stands for 1/10000th of a second, 10000 for 1 second
-and 100000 for 10 seconds.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_EXPOSURE_AUTO_PRIORITY</constant> </entry>
- <entry>boolean</entry>
- </row><row><entry spanname="descr">When
-<constant>V4L2_CID_EXPOSURE_AUTO</constant> is set to
-<constant>AUTO</constant> or <constant>APERTURE_PRIORITY</constant>,
-this control determines if the device may dynamically vary the frame
-rate. By default this feature is disabled (0) and the frame rate must
-remain constant.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_PAN_RELATIVE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">This control turns the
-camera horizontally by the specified amount. The unit is undefined. A
-positive value moves the camera to the right (clockwise when viewed
-from above), a negative value to the left. A value of zero does not
-cause motion. This is a write-only control.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_TILT_RELATIVE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">This control turns the
-camera vertically by the specified amount. The unit is undefined. A
-positive value moves the camera up, a negative value down. A value of
-zero does not cause motion. This is a write-only control.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_PAN_RESET</constant> </entry>
- <entry>button</entry>
- </row><row><entry spanname="descr">When this control is set,
-the camera moves horizontally to the default position.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_TILT_RESET</constant> </entry>
- <entry>button</entry>
- </row><row><entry spanname="descr">When this control is set,
-the camera moves vertically to the default position.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_PAN_ABSOLUTE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">This control
-turns the camera horizontally to the specified position. Positive
-values move the camera to the right (clockwise when viewed from above),
-negative values to the left. Drivers should interpret the values as arc
-seconds, with valid values between -180 * 3600 and +180 * 3600
-inclusive.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_TILT_ABSOLUTE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">This control
-turns the camera vertically to the specified position. Positive values
-move the camera up, negative values down. Drivers should interpret the
-values as arc seconds, with valid values between -180 * 3600 and +180
-* 3600 inclusive.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_FOCUS_ABSOLUTE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">This control sets the
-focal point of the camera to the specified position. The unit is
-undefined. Positive values set the focus closer to the camera,
-negative values towards infinity.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_FOCUS_RELATIVE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">This control moves the
-focal point of the camera by the specified amount. The unit is
-undefined. Positive values move the focus closer to the camera,
-negative values towards infinity. This is a write-only control.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_FOCUS_AUTO</constant> </entry>
- <entry>boolean</entry>
- </row><row><entry spanname="descr">Enables automatic focus
-adjustments. The effect of manual focus adjustments while this feature
-is enabled is undefined, drivers should ignore such requests.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_ZOOM_ABSOLUTE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Specify the objective lens
-focal length as an absolute value. The zoom unit is driver-specific and its
-value should be a positive integer.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_ZOOM_RELATIVE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Specify the objective lens
-focal length relatively to the current value. Positive values move the zoom
-lens group towards the telephoto direction, negative values towards the
-wide-angle direction. The zoom unit is driver-specific. This is a write-only control.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_ZOOM_CONTINUOUS</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Move the objective lens group
-at the specified speed until it reaches physical device limits or until an
-explicit request to stop the movement. A positive value moves the zoom lens
-group towards the telephoto direction. A value of zero stops the zoom lens
-group movement. A negative value moves the zoom lens group towards the
-wide-angle direction. The zoom speed unit is driver-specific.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_IRIS_ABSOLUTE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">This control sets the
-camera's aperture to the specified value. The unit is undefined.
-Larger values open the iris wider, smaller values close it.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_IRIS_RELATIVE</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">This control modifies the
-camera's aperture by the specified amount. The unit is undefined.
-Positive values open the iris one step further, negative values close
-it one step further. This is a write-only control.</entry>
- </row>
- <row><entry></entry></row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_PRIVACY</constant> </entry>
- <entry>boolean</entry>
- </row><row><entry spanname="descr">Prevent video from being acquired
-by the camera. When this control is set to <constant>TRUE</constant> (1), no
-image can be captured by the camera. Common means to enforce privacy are
-mechanical obturation of the sensor and firmware image processing, but the
-device is not restricted to these methods. Devices that implement the privacy
-control must support read access and may support write access.</entry>
- </row>
-
- <row>
- <entry spanname="id"><constant>V4L2_CID_BAND_STOP_FILTER</constant> </entry>
- <entry>integer</entry>
- </row><row><entry spanname="descr">Switch the band-stop filter of a
-camera sensor on or off, or specify its strength. Such band-stop filters can
-be used, for example, to filter out the fluorescent light component.</entry>
- </row>
- <row><entry></entry></row>
- </tbody>
- </tgroup>
- </table>
- </section>
-
- <section id="fm-tx-controls">
- <title>FM Transmitter Control Reference</title>
-
- <para>The FM Transmitter (FM_TX) class includes controls for common features of
-FM transmissions capable devices. Currently this class includes parameters for audio
-compression, pilot tone generation, audio deviation limiter, RDS transmission and
-tuning power features.</para>
-
- <table pgwide="1" frame="none" id="fm-tx-control-id">
- <title>FM_TX Control IDs</title>
-
- <tgroup cols="4">
- <colspec colname="c1" colwidth="1*" />
- <colspec colname="c2" colwidth="6*" />
- <colspec colname="c3" colwidth="2*" />
- <colspec colname="c4" colwidth="6*" />
- <spanspec namest="c1" nameend="c2" spanname="id" />
- <spanspec namest="c2" nameend="c4" spanname="descr" />
- <thead>
- <row>
- <entry spanname="id" align="left">ID</entry>
- <entry align="left">Type</entry>
- </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FM_TX_CLASS</constant> </entry>
- <entry>class</entry>
- </row><row><entry spanname="descr">The FM_TX class
-descriptor. Calling &VIDIOC-QUERYCTRL; for this control will return a
-description of this control class.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_RDS_TX_DEVIATION</constant> </entry>
- <entry>integer</entry>
- </row>
- <row><entry spanname="descr">Configures RDS signal frequency deviation level in Hz.
-The range and step are driver-specific.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_RDS_TX_PI</constant> </entry>
- <entry>integer</entry>
- </row>
- <row><entry spanname="descr">Sets the RDS Programme Identification field
-for transmission.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_RDS_TX_PTY</constant> </entry>
- <entry>integer</entry>
- </row>
- <row><entry spanname="descr">Sets the RDS Programme Type field for transmission.
-This encodes up to 31 pre-defined programme types.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_RDS_TX_PS_NAME</constant> </entry>
- <entry>string</entry>
- </row>
- <row><entry spanname="descr">Sets the Programme Service name (PS_NAME) for transmission.
-It is intended for static display on a receiver. It is the primary aid to listeners in programme service
-identification and selection. In Annex E of <xref linkend="en50067" />, the RDS specification,
-there is a full description of the correct character encoding for Programme Service name strings.
-Also from RDS specification, PS is usually a single eight character text. However, it is also possible
-to find receivers which can scroll strings sized as 8 x N characters. So, this control must be configured
-with steps of 8 characters. The result is it must always contain a string with size multiple of 8.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_RDS_TX_RADIO_TEXT</constant> </entry>
- <entry>string</entry>
- </row>
- <row><entry spanname="descr">Sets the Radio Text info for transmission. It is a textual description of
-what is being broadcasted. RDS Radio Text can be applied when broadcaster wishes to transmit longer PS names,
-programme-related information or any other text. In these cases, RadioText should be used in addition to
-<constant>V4L2_CID_RDS_TX_PS_NAME</constant>. The encoding for Radio Text strings is also fully described
-in Annex E of <xref linkend="en50067" />. The length of Radio Text strings depends on which RDS Block is being
-used to transmit it, either 32 (2A block) or 64 (2B block). However, it is also possible
-to find receivers which can scroll strings sized as 32 x N or 64 x N characters. So, this control must be configured
-with steps of 32 or 64 characters. The result is it must always contain a string with size multiple of 32 or 64. </entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_AUDIO_LIMITER_ENABLED</constant> </entry>
- <entry>boolean</entry>
- </row>
- <row><entry spanname="descr">Enables or disables the audio deviation limiter feature.
-The limiter is useful when trying to maximize the audio volume, minimize receiver-generated
-distortion and prevent overmodulation.
-</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_AUDIO_LIMITER_RELEASE_TIME</constant> </entry>
- <entry>integer</entry>
- </row>
- <row><entry spanname="descr">Sets the audio deviation limiter feature release time.
-Unit is in useconds. Step and range are driver-specific.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_AUDIO_LIMITER_DEVIATION</constant> </entry>
- <entry>integer</entry>
- </row>
- <row><entry spanname="descr">Configures audio frequency deviation level in Hz.
-The range and step are driver-specific.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_ENABLED</constant> </entry>
- <entry>boolean</entry>
- </row>
- <row><entry spanname="descr">Enables or disables the audio compression feature.
-This feature amplifies signals below the threshold by a fixed gain and compresses audio
-signals above the threshold by the ratio of Threshold/(Gain + Threshold).</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_GAIN</constant> </entry>
- <entry>integer</entry>
- </row>
- <row><entry spanname="descr">Sets the gain for audio compression feature. It is
-a dB value. The range and step are driver-specific.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_THRESHOLD</constant> </entry>
- <entry>integer</entry>
- </row>
- <row><entry spanname="descr">Sets the threshold level for audio compression freature.
-It is a dB value. The range and step are driver-specific.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME</constant> </entry>
- <entry>integer</entry>
- </row>
- <row><entry spanname="descr">Sets the attack time for audio compression feature.
-It is a useconds value. The range and step are driver-specific.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME</constant> </entry>
- <entry>integer</entry>
- </row>
- <row><entry spanname="descr">Sets the release time for audio compression feature.
-It is a useconds value. The range and step are driver-specific.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_PILOT_TONE_ENABLED</constant> </entry>
- <entry>boolean</entry>
- </row>
- <row><entry spanname="descr">Enables or disables the pilot tone generation feature.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_PILOT_TONE_DEVIATION</constant> </entry>
- <entry>integer</entry>
- </row>
- <row><entry spanname="descr">Configures pilot tone frequency deviation level. Unit is
-in Hz. The range and step are driver-specific.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_PILOT_TONE_FREQUENCY</constant> </entry>
- <entry>integer</entry>
- </row>
- <row><entry spanname="descr">Configures pilot tone frequency value. Unit is
-in Hz. The range and step are driver-specific.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_TUNE_PREEMPHASIS</constant> </entry>
- <entry>integer</entry>
- </row>
- <row id="v4l2-preemphasis"><entry spanname="descr">Configures the pre-emphasis value for broadcasting.
-A pre-emphasis filter is applied to the broadcast to accentuate the high audio frequencies.
-Depending on the region, a time constant of either 50 or 75 useconds is used. The enum v4l2_preemphasis
-defines possible values for pre-emphasis. Here they are:</entry>
- </row><row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_PREEMPHASIS_DISABLED</constant> </entry>
- <entry>No pre-emphasis is applied.</entry>
- </row>
- <row>
- <entry><constant>V4L2_PREEMPHASIS_50_uS</constant> </entry>
- <entry>A pre-emphasis of 50 uS is used.</entry>
- </row>
- <row>
- <entry><constant>V4L2_PREEMPHASIS_75_uS</constant> </entry>
- <entry>A pre-emphasis of 75 uS is used.</entry>
- </row>
- </tbody>
- </entrytbl>
-
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_TUNE_POWER_LEVEL</constant> </entry>
- <entry>integer</entry>
- </row>
- <row><entry spanname="descr">Sets the output power level for signal transmission.
-Unit is in dBuV. Range and step are driver-specific.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_TUNE_ANTENNA_CAPACITOR</constant> </entry>
- <entry>integer</entry>
- </row>
- <row><entry spanname="descr">This selects the value of antenna tuning capacitor
-manually or automatically if set to zero. Unit, range and step are driver-specific.</entry>
- </row>
- <row><entry></entry></row>
- </tbody>
- </tgroup>
- </table>
-
-<para>For more details about RDS specification, refer to
-<xref linkend="en50067" /> document, from CENELEC.</para>
- </section>
-</section>
-
- <!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "common.sgml"
-indent-tabs-mode: nil
-End:
- -->
diff --git a/Documentation/DocBook/v4l/crop.gif b/Documentation/DocBook/v4l/crop.gif
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diff --git a/Documentation/DocBook/v4l/dev-event.xml b/Documentation/DocBook/v4l/dev-event.xml
deleted file mode 100644
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- <title>Event Interface</title>
-
- <para>The V4L2 event interface provides means for user to get
- immediately notified on certain conditions taking place on a device.
- This might include start of frame or loss of signal events, for
- example.
- </para>
-
- <para>To receive events, the events the user is interested in first must
- be subscribed using the &VIDIOC-SUBSCRIBE-EVENT; ioctl. Once an event is
- subscribed, the events of subscribed types are dequeueable using the
- &VIDIOC-DQEVENT; ioctl. Events may be unsubscribed using
- VIDIOC_UNSUBSCRIBE_EVENT ioctl. The special event type V4L2_EVENT_ALL may
- be used to unsubscribe all the events the driver supports.</para>
-
- <para>The event subscriptions and event queues are specific to file
- handles. Subscribing an event on one file handle does not affect
- other file handles.
- </para>
-
- <para>The information on dequeueable events is obtained by using select or
- poll system calls on video devices. The V4L2 events use POLLPRI events on
- poll system call and exceptions on select system call. </para>
-
- <!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
- -->
diff --git a/Documentation/DocBook/v4l/dev-subdev.xml b/Documentation/DocBook/v4l/dev-subdev.xml
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- <title>Sub-device Interface</title>
-
- <note>
- <title>Experimental</title>
- <para>This is an <link linkend="experimental">experimental</link>
- interface and may change in the future.</para>
- </note>
-
- <para>The complex nature of V4L2 devices, where hardware is often made of
- several integrated circuits that need to interact with each other in a
- controlled way, leads to complex V4L2 drivers. The drivers usually reflect
- the hardware model in software, and model the different hardware components
- as software blocks called sub-devices.</para>
-
- <para>V4L2 sub-devices are usually kernel-only objects. If the V4L2 driver
- implements the media device API, they will automatically inherit from media
- entities. Applications will be able to enumerate the sub-devices and discover
- the hardware topology using the media entities, pads and links enumeration
- API.</para>
-
- <para>In addition to make sub-devices discoverable, drivers can also choose
- to make them directly configurable by applications. When both the sub-device
- driver and the V4L2 device driver support this, sub-devices will feature a
- character device node on which ioctls can be called to
- <itemizedlist>
- <listitem><para>query, read and write sub-devices controls</para></listitem>
- <listitem><para>subscribe and unsubscribe to events and retrieve them</para></listitem>
- <listitem><para>negotiate image formats on individual pads</para></listitem>
- </itemizedlist>
- </para>
-
- <para>Sub-device character device nodes, conventionally named
- <filename>/dev/v4l-subdev*</filename>, use major number 81.</para>
-
- <section>
- <title>Controls</title>
- <para>Most V4L2 controls are implemented by sub-device hardware. Drivers
- usually merge all controls and expose them through video device nodes.
- Applications can control all sub-devices through a single interface.</para>
-
- <para>Complex devices sometimes implement the same control in different
- pieces of hardware. This situation is common in embedded platforms, where
- both sensors and image processing hardware implement identical functions,
- such as contrast adjustment, white balance or faulty pixels correction. As
- the V4L2 controls API doesn't support several identical controls in a single
- device, all but one of the identical controls are hidden.</para>
-
- <para>Applications can access those hidden controls through the sub-device
- node with the V4L2 control API described in <xref linkend="control" />. The
- ioctls behave identically as when issued on V4L2 device nodes, with the
- exception that they deal only with controls implemented in the sub-device.
- </para>
-
- <para>Depending on the driver, those controls might also be exposed through
- one (or several) V4L2 device nodes.</para>
- </section>
-
- <section>
- <title>Events</title>
- <para>V4L2 sub-devices can notify applications of events as described in
- <xref linkend="event" />. The API behaves identically as when used on V4L2
- device nodes, with the exception that it only deals with events generated by
- the sub-device. Depending on the driver, those events might also be reported
- on one (or several) V4L2 device nodes.</para>
- </section>
-
- <section id="pad-level-formats">
- <title>Pad-level Formats</title>
-
- <warning><para>Pad-level formats are only applicable to very complex device that
- need to expose low-level format configuration to user space. Generic V4L2
- applications do <emphasis>not</emphasis> need to use the API described in
- this section.</para></warning>
-
- <note><para>For the purpose of this section, the term
- <wordasword>format</wordasword> means the combination of media bus data
- format, frame width and frame height.</para></note>
-
- <para>Image formats are typically negotiated on video capture and output
- devices using the <link linkend="crop">cropping and scaling</link> ioctls.
- The driver is responsible for configuring every block in the video pipeline
- according to the requested format at the pipeline input and/or
- output.</para>
-
- <para>For complex devices, such as often found in embedded systems,
- identical image sizes at the output of a pipeline can be achieved using
- different hardware configurations. One such example is shown on
- <xref linkend="pipeline-scaling" />, where
- image scaling can be performed on both the video sensor and the host image
- processing hardware.</para>
-
- <figure id="pipeline-scaling">
- <title>Image Format Negotiation on Pipelines</title>
- <mediaobject>
- <imageobject>
- <imagedata fileref="pipeline.pdf" format="PS" />
- </imageobject>
- <imageobject>
- <imagedata fileref="pipeline.png" format="PNG" />
- </imageobject>
- <textobject>
- <phrase>High quality and high speed pipeline configuration</phrase>
- </textobject>
- </mediaobject>
- </figure>
-
- <para>The sensor scaler is usually of less quality than the host scaler, but
- scaling on the sensor is required to achieve higher frame rates. Depending
- on the use case (quality vs. speed), the pipeline must be configured
- differently. Applications need to configure the formats at every point in
- the pipeline explicitly.</para>
-
- <para>Drivers that implement the <link linkend="media-controller-intro">media
- API</link> can expose pad-level image format configuration to applications.
- When they do, applications can use the &VIDIOC-SUBDEV-G-FMT; and
- &VIDIOC-SUBDEV-S-FMT; ioctls. to negotiate formats on a per-pad basis.</para>
-
- <para>Applications are responsible for configuring coherent parameters on
- the whole pipeline and making sure that connected pads have compatible
- formats. The pipeline is checked for formats mismatch at &VIDIOC-STREAMON;
- time, and an &EPIPE; is then returned if the configuration is
- invalid.</para>
-
- <para>Pad-level image format configuration support can be tested by calling
- the &VIDIOC-SUBDEV-G-FMT; ioctl on pad 0. If the driver returns an &EINVAL;
- pad-level format configuration is not supported by the sub-device.</para>
-
- <section>
- <title>Format Negotiation</title>
-
- <para>Acceptable formats on pads can (and usually do) depend on a number
- of external parameters, such as formats on other pads, active links, or
- even controls. Finding a combination of formats on all pads in a video
- pipeline, acceptable to both application and driver, can't rely on formats
- enumeration only. A format negotiation mechanism is required.</para>
-
- <para>Central to the format negotiation mechanism are the get/set format
- operations. When called with the <structfield>which</structfield> argument
- set to <constant>V4L2_SUBDEV_FORMAT_TRY</constant>, the
- &VIDIOC-SUBDEV-G-FMT; and &VIDIOC-SUBDEV-S-FMT; ioctls operate on a set of
- formats parameters that are not connected to the hardware configuration.
- Modifying those 'try' formats leaves the device state untouched (this
- applies to both the software state stored in the driver and the hardware
- state stored in the device itself).</para>
-
- <para>While not kept as part of the device state, try formats are stored
- in the sub-device file handles. A &VIDIOC-SUBDEV-G-FMT; call will return
- the last try format set <emphasis>on the same sub-device file
- handle</emphasis>. Several applications querying the same sub-device at
- the same time will thus not interact with each other.</para>
-
- <para>To find out whether a particular format is supported by the device,
- applications use the &VIDIOC-SUBDEV-S-FMT; ioctl. Drivers verify and, if
- needed, change the requested <structfield>format</structfield> based on
- device requirements and return the possibly modified value. Applications
- can then choose to try a different format or accept the returned value and
- continue.</para>
-
- <para>Formats returned by the driver during a negotiation iteration are
- guaranteed to be supported by the device. In particular, drivers guarantee
- that a returned format will not be further changed if passed to an
- &VIDIOC-SUBDEV-S-FMT; call as-is (as long as external parameters, such as
- formats on other pads or links' configuration are not changed).</para>
-
- <para>Drivers automatically propagate formats inside sub-devices. When a
- try or active format is set on a pad, corresponding formats on other pads
- of the same sub-device can be modified by the driver. Drivers are free to
- modify formats as required by the device. However, they should comply with
- the following rules when possible:
- <itemizedlist>
- <listitem><para>Formats should be propagated from sink pads to source pads.
- Modifying a format on a source pad should not modify the format on any
- sink pad.</para></listitem>
- <listitem><para>Sub-devices that scale frames using variable scaling factors
- should reset the scale factors to default values when sink pads formats
- are modified. If the 1:1 scaling ratio is supported, this means that
- source pads formats should be reset to the sink pads formats.</para></listitem>
- </itemizedlist>
- </para>
-
- <para>Formats are not propagated across links, as that would involve
- propagating them from one sub-device file handle to another. Applications
- must then take care to configure both ends of every link explicitly with
- compatible formats. Identical formats on the two ends of a link are
- guaranteed to be compatible. Drivers are free to accept different formats
- matching device requirements as being compatible.</para>
-
- <para><xref linkend="sample-pipeline-config" />
- shows a sample configuration sequence for the pipeline described in
- <xref linkend="pipeline-scaling" /> (table
- columns list entity names and pad numbers).</para>
-
- <table pgwide="0" frame="none" id="sample-pipeline-config">
- <title>Sample Pipeline Configuration</title>
- <tgroup cols="3">
- <colspec colname="what"/>
- <colspec colname="sensor-0" />
- <colspec colname="frontend-0" />
- <colspec colname="frontend-1" />
- <colspec colname="scaler-0" />
- <colspec colname="scaler-1" />
- <thead>
- <row>
- <entry></entry>
- <entry>Sensor/0</entry>
- <entry>Frontend/0</entry>
- <entry>Frontend/1</entry>
- <entry>Scaler/0</entry>
- <entry>Scaler/1</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry>Initial state</entry>
- <entry>2048x1536</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- </row>
- <row>
- <entry>Configure frontend input</entry>
- <entry>2048x1536</entry>
- <entry><emphasis>2048x1536</emphasis></entry>
- <entry><emphasis>2046x1534</emphasis></entry>
- <entry>-</entry>
- <entry>-</entry>
- </row>
- <row>
- <entry>Configure scaler input</entry>
- <entry>2048x1536</entry>
- <entry>2048x1536</entry>
- <entry>2046x1534</entry>
- <entry><emphasis>2046x1534</emphasis></entry>
- <entry><emphasis>2046x1534</emphasis></entry>
- </row>
- <row>
- <entry>Configure scaler output</entry>
- <entry>2048x1536</entry>
- <entry>2048x1536</entry>
- <entry>2046x1534</entry>
- <entry>2046x1534</entry>
- <entry><emphasis>1280x960</emphasis></entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <para>
- <orderedlist>
- <listitem><para>Initial state. The sensor output is set to its native 3MP
- resolution. Resolutions on the host frontend and scaler input and output
- pads are undefined.</para></listitem>
- <listitem><para>The application configures the frontend input pad resolution to
- 2048x1536. The driver propagates the format to the frontend output pad.
- Note that the propagated output format can be different, as in this case,
- than the input format, as the hardware might need to crop pixels (for
- instance when converting a Bayer filter pattern to RGB or YUV).</para></listitem>
- <listitem><para>The application configures the scaler input pad resolution to
- 2046x1534 to match the frontend output resolution. The driver propagates
- the format to the scaler output pad.</para></listitem>
- <listitem><para>The application configures the scaler output pad resolution to
- 1280x960.</para></listitem>
- </orderedlist>
- </para>
-
- <para>When satisfied with the try results, applications can set the active
- formats by setting the <structfield>which</structfield> argument to
- <constant>V4L2_SUBDEV_FORMAT_TRY</constant>. Active formats are changed
- exactly as try formats by drivers. To avoid modifying the hardware state
- during format negotiation, applications should negotiate try formats first
- and then modify the active settings using the try formats returned during
- the last negotiation iteration. This guarantees that the active format
- will be applied as-is by the driver without being modified.
- </para>
- </section>
-
- <section>
- <title>Cropping and scaling</title>
-
- <para>Many sub-devices support cropping frames on their input or output
- pads (or possible even on both). Cropping is used to select the area of
- interest in an image, typically on a video sensor or video decoder. It can
- also be used as part of digital zoom implementations to select the area of
- the image that will be scaled up.</para>
-
- <para>Crop settings are defined by a crop rectangle and represented in a
- &v4l2-rect; by the coordinates of the top left corner and the rectangle
- size. Both the coordinates and sizes are expressed in pixels.</para>
-
- <para>The crop rectangle is retrieved and set using the
- &VIDIOC-SUBDEV-G-CROP; and &VIDIOC-SUBDEV-S-CROP; ioctls. Like for pad
- formats, drivers store try and active crop rectangles. The format
- negotiation mechanism applies to crop settings as well.</para>
-
- <para>On input pads, cropping is applied relatively to the current pad
- format. The pad format represents the image size as received by the
- sub-device from the previous block in the pipeline, and the crop rectangle
- represents the sub-image that will be transmitted further inside the
- sub-device for processing. The crop rectangle be entirely containted
- inside the input image size.</para>
-
- <para>Input crop rectangle are reset to their default value when the input
- image format is modified. Drivers should use the input image size as the
- crop rectangle default value, but hardware requirements may prevent this.
- </para>
-
- <para>Cropping behaviour on output pads is not defined.</para>
-
- </section>
- </section>
-
- &sub-subdev-formats;
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-<refentry id="func-ioctl">
- <refmeta>
- <refentrytitle>V4L2 ioctl()</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>v4l2-ioctl</refname>
- <refpurpose>Program a V4L2 device</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcsynopsisinfo>#include <sys/ioctl.h></funcsynopsisinfo>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>void *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>V4L2 ioctl request code as defined in the <filename>videodev2.h</filename> header file, for example
-VIDIOC_QUERYCAP.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para>Pointer to a function parameter, usually a structure.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>The <function>ioctl()</function> function is used to program
-V4L2 devices. The argument <parameter>fd</parameter> must be an open
-file descriptor. An ioctl <parameter>request</parameter> has encoded
-in it whether the argument is an input, output or read/write
-parameter, and the size of the argument <parameter>argp</parameter> in
-bytes. Macros and defines specifying V4L2 ioctl requests are located
-in the <filename>videodev2.h</filename> header file.
-Applications should use their own copy, not include the version in the
-kernel sources on the system they compile on. All V4L2 ioctl requests,
-their respective function and parameters are specified in <xref
- linkend="user-func" />.</para>
- </refsect1>
-
- <refsect1>
- <title>Return Value</title>
-
- <para>On success the <function>ioctl()</function> function returns
-<returnvalue>0</returnvalue> and does not reset the
-<varname>errno</varname> variable. On failure
-<returnvalue>-1</returnvalue> is returned, when the ioctl takes an
-output or read/write parameter it remains unmodified, and the
-<varname>errno</varname> variable is set appropriately. See below for
-possible error codes. Generic errors like <errorcode>EBADF</errorcode>
-or <errorcode>EFAULT</errorcode> are not listed in the sections
-discussing individual ioctl requests.</para>
- <para>Note ioctls may return undefined error codes. Since errors
-may have side effects such as a driver reset applications should
-abort on unexpected errors.</para>
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EBADF</errorcode></term>
- <listitem>
- <para><parameter>fd</parameter> is not a valid open file
-descriptor.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The property cannot be changed right now. Typically
-this error code is returned when I/O is in progress or the driver
-supports multiple opens and another process locked the property.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EFAULT</errorcode></term>
- <listitem>
- <para><parameter>argp</parameter> references an inaccessible
-memory area.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>ENOTTY</errorcode></term>
- <listitem>
- <para><parameter>fd</parameter> is not associated with a
-character special device.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The <parameter>request</parameter> or the data pointed
-to by <parameter>argp</parameter> is not valid. This is a very common
-error code, see the individual ioctl requests listed in <xref
- linkend="user-func" /> for actual causes.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>ENOMEM</errorcode></term>
- <listitem>
- <para>Not enough physical or virtual memory was available to
-complete the request.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>ERANGE</errorcode></term>
- <listitem>
- <para>The application attempted to set a control with the
-&VIDIOC-S-CTRL; ioctl to a value which is out of bounds.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/io.xml b/Documentation/DocBook/v4l/io.xml
deleted file mode 100644
index 227e7ac..0000000
--- a/Documentation/DocBook/v4l/io.xml
+++ /dev/null
@@ -1,1265 +0,0 @@
- <title>Input/Output</title>
-
- <para>The V4L2 API defines several different methods to read from or
-write to a device. All drivers exchanging data with applications must
-support at least one of them.</para>
-
- <para>The classic I/O method using the <function>read()</function>
-and <function>write()</function> function is automatically selected
-after opening a V4L2 device. When the driver does not support this
-method attempts to read or write will fail at any time.</para>
-
- <para>Other methods must be negotiated. To select the streaming I/O
-method with memory mapped or user buffers applications call the
-&VIDIOC-REQBUFS; ioctl. The asynchronous I/O method is not defined
-yet.</para>
-
- <para>Video overlay can be considered another I/O method, although
-the application does not directly receive the image data. It is
-selected by initiating video overlay with the &VIDIOC-S-FMT; ioctl.
-For more information see <xref linkend="overlay" />.</para>
-
- <para>Generally exactly one I/O method, including overlay, is
-associated with each file descriptor. The only exceptions are
-applications not exchanging data with a driver ("panel applications",
-see <xref linkend="open" />) and drivers permitting simultaneous video capturing
-and overlay using the same file descriptor, for compatibility with V4L
-and earlier versions of V4L2.</para>
-
- <para><constant>VIDIOC_S_FMT</constant> and
-<constant>VIDIOC_REQBUFS</constant> would permit this to some degree,
-but for simplicity drivers need not support switching the I/O method
-(after first switching away from read/write) other than by closing
-and reopening the device.</para>
-
- <para>The following sections describe the various I/O methods in
-more detail.</para>
-
- <section id="rw">
- <title>Read/Write</title>
-
- <para>Input and output devices support the
-<function>read()</function> and <function>write()</function> function,
-respectively, when the <constant>V4L2_CAP_READWRITE</constant> flag in
-the <structfield>capabilities</structfield> field of &v4l2-capability;
-returned by the &VIDIOC-QUERYCAP; ioctl is set.</para>
-
- <para>Drivers may need the CPU to copy the data, but they may also
-support DMA to or from user memory, so this I/O method is not
-necessarily less efficient than other methods merely exchanging buffer
-pointers. It is considered inferior though because no meta-information
-like frame counters or timestamps are passed. This information is
-necessary to recognize frame dropping and to synchronize with other
-data streams. However this is also the simplest I/O method, requiring
-little or no setup to exchange data. It permits command line stunts
-like this (the <application>vidctrl</application> tool is
-fictitious):</para>
-
- <informalexample>
- <screen>
-> vidctrl /dev/video --input=0 --format=YUYV --size=352x288
-> dd if=/dev/video of=myimage.422 bs=202752 count=1
-</screen>
- </informalexample>
-
- <para>To read from the device applications use the
-&func-read; function, to write the &func-write; function.
-Drivers must implement one I/O method if they
-exchange data with applications, but it need not be this.<footnote>
- <para>It would be desirable if applications could depend on
-drivers supporting all I/O interfaces, but as much as the complex
-memory mapping I/O can be inadequate for some devices we have no
-reason to require this interface, which is most useful for simple
-applications capturing still images.</para>
- </footnote> When reading or writing is supported, the driver
-must also support the &func-select; and &func-poll;
-function.<footnote>
- <para>At the driver level <function>select()</function> and
-<function>poll()</function> are the same, and
-<function>select()</function> is too important to be optional.</para>
- </footnote></para>
- </section>
-
- <section id="mmap">
- <title>Streaming I/O (Memory Mapping)</title>
-
- <para>Input and output devices support this I/O method when the
-<constant>V4L2_CAP_STREAMING</constant> flag in the
-<structfield>capabilities</structfield> field of &v4l2-capability;
-returned by the &VIDIOC-QUERYCAP; ioctl is set. There are two
-streaming methods, to determine if the memory mapping flavor is
-supported applications must call the &VIDIOC-REQBUFS; ioctl.</para>
-
- <para>Streaming is an I/O method where only pointers to buffers
-are exchanged between application and driver, the data itself is not
-copied. Memory mapping is primarily intended to map buffers in device
-memory into the application's address space. Device memory can be for
-example the video memory on a graphics card with a video capture
-add-on. However, being the most efficient I/O method available for a
-long time, many other drivers support streaming as well, allocating
-buffers in DMA-able main memory.</para>
-
- <para>A driver can support many sets of buffers. Each set is
-identified by a unique buffer type value. The sets are independent and
-each set can hold a different type of data. To access different sets
-at the same time different file descriptors must be used.<footnote>
- <para>One could use one file descriptor and set the buffer
-type field accordingly when calling &VIDIOC-QBUF; etc., but it makes
-the <function>select()</function> function ambiguous. We also like the
-clean approach of one file descriptor per logical stream. Video
-overlay for example is also a logical stream, although the CPU is not
-needed for continuous operation.</para>
- </footnote></para>
-
- <para>To allocate device buffers applications call the
-&VIDIOC-REQBUFS; ioctl with the desired number of buffers and buffer
-type, for example <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>.
-This ioctl can also be used to change the number of buffers or to free
-the allocated memory, provided none of the buffers are still
-mapped.</para>
-
- <para>Before applications can access the buffers they must map
-them into their address space with the &func-mmap; function. The
-location of the buffers in device memory can be determined with the
-&VIDIOC-QUERYBUF; ioctl. In the single-planar API case, the
-<structfield>m.offset</structfield> and <structfield>length</structfield>
-returned in a &v4l2-buffer; are passed as sixth and second parameter to the
-<function>mmap()</function> function. When using the multi-planar API,
-struct &v4l2-buffer; contains an array of &v4l2-plane; structures, each
-containing its own <structfield>m.offset</structfield> and
-<structfield>length</structfield>. When using the multi-planar API, every
-plane of every buffer has to be mapped separately, so the number of
-calls to &func-mmap; should be equal to number of buffers times number of
-planes in each buffer. The offset and length values must not be modified.
-Remember, the buffers are allocated in physical memory, as opposed to virtual
-memory, which can be swapped out to disk. Applications should free the buffers
-as soon as possible with the &func-munmap; function.</para>
-
- <example>
- <title>Mapping buffers in the single-planar API</title>
- <programlisting>
-&v4l2-requestbuffers; reqbuf;
-struct {
- void *start;
- size_t length;
-} *buffers;
-unsigned int i;
-
-memset(&reqbuf, 0, sizeof(reqbuf));
-reqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-reqbuf.memory = V4L2_MEMORY_MMAP;
-reqbuf.count = 20;
-
-if (-1 == ioctl (fd, &VIDIOC-REQBUFS;, &reqbuf)) {
- if (errno == EINVAL)
- printf("Video capturing or mmap-streaming is not supported\n");
- else
- perror("VIDIOC_REQBUFS");
-
- exit(EXIT_FAILURE);
-}
-
-/* We want at least five buffers. */
-
-if (reqbuf.count < 5) {
- /* You may need to free the buffers here. */
- printf("Not enough buffer memory\n");
- exit(EXIT_FAILURE);
-}
-
-buffers = calloc(reqbuf.count, sizeof(*buffers));
-assert(buffers != NULL);
-
-for (i = 0; i < reqbuf.count; i++) {
- &v4l2-buffer; buffer;
-
- memset(&buffer, 0, sizeof(buffer));
- buffer.type = reqbuf.type;
- buffer.memory = V4L2_MEMORY_MMAP;
- buffer.index = i;
-
- if (-1 == ioctl (fd, &VIDIOC-QUERYBUF;, &buffer)) {
- perror("VIDIOC_QUERYBUF");
- exit(EXIT_FAILURE);
- }
-
- buffers[i].length = buffer.length; /* remember for munmap() */
-
- buffers[i].start = mmap(NULL, buffer.length,
- PROT_READ | PROT_WRITE, /* recommended */
- MAP_SHARED, /* recommended */
- fd, buffer.m.offset);
-
- if (MAP_FAILED == buffers[i].start) {
- /* If you do not exit here you should unmap() and free()
- the buffers mapped so far. */
- perror("mmap");
- exit(EXIT_FAILURE);
- }
-}
-
-/* Cleanup. */
-
-for (i = 0; i < reqbuf.count; i++)
- munmap(buffers[i].start, buffers[i].length);
- </programlisting>
- </example>
-
- <example>
- <title>Mapping buffers in the multi-planar API</title>
- <programlisting>
-&v4l2-requestbuffers; reqbuf;
-/* Our current format uses 3 planes per buffer */
-#define FMT_NUM_PLANES = 3;
-
-struct {
- void *start[FMT_NUM_PLANES];
- size_t length[FMT_NUM_PLANES];
-} *buffers;
-unsigned int i, j;
-
-memset(&reqbuf, 0, sizeof(reqbuf));
-reqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
-reqbuf.memory = V4L2_MEMORY_MMAP;
-reqbuf.count = 20;
-
-if (ioctl(fd, &VIDIOC-REQBUFS;, &reqbuf) < 0) {
- if (errno == EINVAL)
- printf("Video capturing or mmap-streaming is not supported\n");
- else
- perror("VIDIOC_REQBUFS");
-
- exit(EXIT_FAILURE);
-}
-
-/* We want at least five buffers. */
-
-if (reqbuf.count < 5) {
- /* You may need to free the buffers here. */
- printf("Not enough buffer memory\n");
- exit(EXIT_FAILURE);
-}
-
-buffers = calloc(reqbuf.count, sizeof(*buffers));
-assert(buffers != NULL);
-
-for (i = 0; i < reqbuf.count; i++) {
- &v4l2-buffer; buffer;
- &v4l2-plane; planes[FMT_NUM_PLANES];
-
- memset(&buffer, 0, sizeof(buffer));
- buffer.type = reqbuf.type;
- buffer.memory = V4L2_MEMORY_MMAP;
- buffer.index = i;
- /* length in struct v4l2_buffer in multi-planar API stores the size
- * of planes array. */
- buffer.length = FMT_NUM_PLANES;
- buffer.m.planes = planes;
-
- if (ioctl(fd, &VIDIOC-QUERYBUF;, &buffer) < 0) {
- perror("VIDIOC_QUERYBUF");
- exit(EXIT_FAILURE);
- }
-
- /* Every plane has to be mapped separately */
- for (j = 0; j < FMT_NUM_PLANES; j++) {
- buffers[i].length[j] = buffer.m.planes[j].length; /* remember for munmap() */
-
- buffers[i].start[j] = mmap(NULL, buffer.m.planes[j].length,
- PROT_READ | PROT_WRITE, /* recommended */
- MAP_SHARED, /* recommended */
- fd, buffer.m.planes[j].m.offset);
-
- if (MAP_FAILED == buffers[i].start[j]) {
- /* If you do not exit here you should unmap() and free()
- the buffers and planes mapped so far. */
- perror("mmap");
- exit(EXIT_FAILURE);
- }
- }
-}
-
-/* Cleanup. */
-
-for (i = 0; i < reqbuf.count; i++)
- for (j = 0; j < FMT_NUM_PLANES; j++)
- munmap(buffers[i].start[j], buffers[i].length[j]);
- </programlisting>
- </example>
-
- <para>Conceptually streaming drivers maintain two buffer queues, an incoming
-and an outgoing queue. They separate the synchronous capture or output
-operation locked to a video clock from the application which is
-subject to random disk or network delays and preemption by
-other processes, thereby reducing the probability of data loss.
-The queues are organized as FIFOs, buffers will be
-output in the order enqueued in the incoming FIFO, and were
-captured in the order dequeued from the outgoing FIFO.</para>
-
- <para>The driver may require a minimum number of buffers enqueued
-at all times to function, apart of this no limit exists on the number
-of buffers applications can enqueue in advance, or dequeue and
-process. They can also enqueue in a different order than buffers have
-been dequeued, and the driver can <emphasis>fill</emphasis> enqueued
-<emphasis>empty</emphasis> buffers in any order. <footnote>
- <para>Random enqueue order permits applications processing
-images out of order (such as video codecs) to return buffers earlier,
-reducing the probability of data loss. Random fill order allows
-drivers to reuse buffers on a LIFO-basis, taking advantage of caches
-holding scatter-gather lists and the like.</para>
- </footnote> The index number of a buffer (&v4l2-buffer;
-<structfield>index</structfield>) plays no role here, it only
-identifies the buffer.</para>
-
- <para>Initially all mapped buffers are in dequeued state,
-inaccessible by the driver. For capturing applications it is customary
-to first enqueue all mapped buffers, then to start capturing and enter
-the read loop. Here the application waits until a filled buffer can be
-dequeued, and re-enqueues the buffer when the data is no longer
-needed. Output applications fill and enqueue buffers, when enough
-buffers are stacked up the output is started with
-<constant>VIDIOC_STREAMON</constant>. In the write loop, when
-the application runs out of free buffers, it must wait until an empty
-buffer can be dequeued and reused.</para>
-
- <para>To enqueue and dequeue a buffer applications use the
-&VIDIOC-QBUF; and &VIDIOC-DQBUF; ioctl. The status of a buffer being
-mapped, enqueued, full or empty can be determined at any time using the
-&VIDIOC-QUERYBUF; ioctl. Two methods exist to suspend execution of the
-application until one or more buffers can be dequeued. By default
-<constant>VIDIOC_DQBUF</constant> blocks when no buffer is in the
-outgoing queue. When the <constant>O_NONBLOCK</constant> flag was
-given to the &func-open; function, <constant>VIDIOC_DQBUF</constant>
-returns immediately with an &EAGAIN; when no buffer is available. The
-&func-select; or &func-poll; function are always available.</para>
-
- <para>To start and stop capturing or output applications call the
-&VIDIOC-STREAMON; and &VIDIOC-STREAMOFF; ioctl. Note
-<constant>VIDIOC_STREAMOFF</constant> removes all buffers from both
-queues as a side effect. Since there is no notion of doing anything
-"now" on a multitasking system, if an application needs to synchronize
-with another event it should examine the &v4l2-buffer;
-<structfield>timestamp</structfield> of captured buffers, or set the
-field before enqueuing buffers for output.</para>
-
- <para>Drivers implementing memory mapping I/O must
-support the <constant>VIDIOC_REQBUFS</constant>,
-<constant>VIDIOC_QUERYBUF</constant>,
-<constant>VIDIOC_QBUF</constant>, <constant>VIDIOC_DQBUF</constant>,
-<constant>VIDIOC_STREAMON</constant> and
-<constant>VIDIOC_STREAMOFF</constant> ioctl, the
-<function>mmap()</function>, <function>munmap()</function>,
-<function>select()</function> and <function>poll()</function>
-function.<footnote>
- <para>At the driver level <function>select()</function> and
-<function>poll()</function> are the same, and
-<function>select()</function> is too important to be optional. The
-rest should be evident.</para>
- </footnote></para>
-
- <para>[capture example]</para>
-
- </section>
-
- <section id="userp">
- <title>Streaming I/O (User Pointers)</title>
-
- <para>Input and output devices support this I/O method when the
-<constant>V4L2_CAP_STREAMING</constant> flag in the
-<structfield>capabilities</structfield> field of &v4l2-capability;
-returned by the &VIDIOC-QUERYCAP; ioctl is set. If the particular user
-pointer method (not only memory mapping) is supported must be
-determined by calling the &VIDIOC-REQBUFS; ioctl.</para>
-
- <para>This I/O method combines advantages of the read/write and
-memory mapping methods. Buffers (planes) are allocated by the application
-itself, and can reside for example in virtual or shared memory. Only
-pointers to data are exchanged, these pointers and meta-information
-are passed in &v4l2-buffer; (or in &v4l2-plane; in the multi-planar API case).
-The driver must be switched into user pointer I/O mode by calling the
-&VIDIOC-REQBUFS; with the desired buffer type. No buffers (planes) are allocated
-beforehand, consequently they are not indexed and cannot be queried like mapped
-buffers with the <constant>VIDIOC_QUERYBUF</constant> ioctl.</para>
-
- <example>
- <title>Initiating streaming I/O with user pointers</title>
-
- <programlisting>
-&v4l2-requestbuffers; reqbuf;
-
-memset (&reqbuf, 0, sizeof (reqbuf));
-reqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-reqbuf.memory = V4L2_MEMORY_USERPTR;
-
-if (ioctl (fd, &VIDIOC-REQBUFS;, &reqbuf) == -1) {
- if (errno == EINVAL)
- printf ("Video capturing or user pointer streaming is not supported\n");
- else
- perror ("VIDIOC_REQBUFS");
-
- exit (EXIT_FAILURE);
-}
- </programlisting>
- </example>
-
- <para>Buffer (plane) addresses and sizes are passed on the fly with the
-&VIDIOC-QBUF; ioctl. Although buffers are commonly cycled,
-applications can pass different addresses and sizes at each
-<constant>VIDIOC_QBUF</constant> call. If required by the hardware the
-driver swaps memory pages within physical memory to create a
-continuous area of memory. This happens transparently to the
-application in the virtual memory subsystem of the kernel. When buffer
-pages have been swapped out to disk they are brought back and finally
-locked in physical memory for DMA.<footnote>
- <para>We expect that frequently used buffers are typically not
-swapped out. Anyway, the process of swapping, locking or generating
-scatter-gather lists may be time consuming. The delay can be masked by
-the depth of the incoming buffer queue, and perhaps by maintaining
-caches assuming a buffer will be soon enqueued again. On the other
-hand, to optimize memory usage drivers can limit the number of buffers
-locked in advance and recycle the most recently used buffers first. Of
-course, the pages of empty buffers in the incoming queue need not be
-saved to disk. Output buffers must be saved on the incoming and
-outgoing queue because an application may share them with other
-processes.</para>
- </footnote></para>
-
- <para>Filled or displayed buffers are dequeued with the
-&VIDIOC-DQBUF; ioctl. The driver can unlock the memory pages at any
-time between the completion of the DMA and this ioctl. The memory is
-also unlocked when &VIDIOC-STREAMOFF; is called, &VIDIOC-REQBUFS;, or
-when the device is closed. Applications must take care not to free
-buffers without dequeuing. For once, the buffers remain locked until
-further, wasting physical memory. Second the driver will not be
-notified when the memory is returned to the application's free list
-and subsequently reused for other purposes, possibly completing the
-requested DMA and overwriting valuable data.</para>
-
- <para>For capturing applications it is customary to enqueue a
-number of empty buffers, to start capturing and enter the read loop.
-Here the application waits until a filled buffer can be dequeued, and
-re-enqueues the buffer when the data is no longer needed. Output
-applications fill and enqueue buffers, when enough buffers are stacked
-up output is started. In the write loop, when the application
-runs out of free buffers it must wait until an empty buffer can be
-dequeued and reused. Two methods exist to suspend execution of the
-application until one or more buffers can be dequeued. By default
-<constant>VIDIOC_DQBUF</constant> blocks when no buffer is in the
-outgoing queue. When the <constant>O_NONBLOCK</constant> flag was
-given to the &func-open; function, <constant>VIDIOC_DQBUF</constant>
-returns immediately with an &EAGAIN; when no buffer is available. The
-&func-select; or &func-poll; function are always available.</para>
-
- <para>To start and stop capturing or output applications call the
-&VIDIOC-STREAMON; and &VIDIOC-STREAMOFF; ioctl. Note
-<constant>VIDIOC_STREAMOFF</constant> removes all buffers from both
-queues and unlocks all buffers as a side effect. Since there is no
-notion of doing anything "now" on a multitasking system, if an
-application needs to synchronize with another event it should examine
-the &v4l2-buffer; <structfield>timestamp</structfield> of captured
-buffers, or set the field before enqueuing buffers for output.</para>
-
- <para>Drivers implementing user pointer I/O must
-support the <constant>VIDIOC_REQBUFS</constant>,
-<constant>VIDIOC_QBUF</constant>, <constant>VIDIOC_DQBUF</constant>,
-<constant>VIDIOC_STREAMON</constant> and
-<constant>VIDIOC_STREAMOFF</constant> ioctl, the
-<function>select()</function> and <function>poll()</function> function.<footnote>
- <para>At the driver level <function>select()</function> and
-<function>poll()</function> are the same, and
-<function>select()</function> is too important to be optional. The
-rest should be evident.</para>
- </footnote></para>
- </section>
-
- <section id="async">
- <title>Asynchronous I/O</title>
-
- <para>This method is not defined yet.</para>
- </section>
-
- <section id="buffer">
- <title>Buffers</title>
-
- <para>A buffer contains data exchanged by application and
-driver using one of the Streaming I/O methods. In the multi-planar API, the
-data is held in planes, while the buffer structure acts as a container
-for the planes. Only pointers to buffers (planes) are exchanged, the data
-itself is not copied. These pointers, together with meta-information like
-timestamps or field parity, are stored in a struct
-<structname>v4l2_buffer</structname>, argument to
-the &VIDIOC-QUERYBUF;, &VIDIOC-QBUF; and &VIDIOC-DQBUF; ioctl.
-In the multi-planar API, some plane-specific members of struct
-<structname>v4l2_buffer</structname>, such as pointers and sizes for each
-plane, are stored in struct <structname>v4l2_plane</structname> instead.
-In that case, struct <structname>v4l2_buffer</structname> contains an array of
-plane structures.</para>
-
- <para>Nominally timestamps refer to the first data byte transmitted.
-In practice however the wide range of hardware covered by the V4L2 API
-limits timestamp accuracy. Often an interrupt routine will
-sample the system clock shortly after the field or frame was stored
-completely in memory. So applications must expect a constant
-difference up to one field or frame period plus a small (few scan
-lines) random error. The delay and error can be much
-larger due to compression or transmission over an external bus when
-the frames are not properly stamped by the sender. This is frequently
-the case with USB cameras. Here timestamps refer to the instant the
-field or frame was received by the driver, not the capture time. These
-devices identify by not enumerating any video standards, see <xref
-linkend="standard" />.</para>
-
- <para>Similar limitations apply to output timestamps. Typically
-the video hardware locks to a clock controlling the video timing, the
-horizontal and vertical synchronization pulses. At some point in the
-line sequence, possibly the vertical blanking, an interrupt routine
-samples the system clock, compares against the timestamp and programs
-the hardware to repeat the previous field or frame, or to display the
-buffer contents.</para>
-
- <para>Apart of limitations of the video device and natural
-inaccuracies of all clocks, it should be noted system time itself is
-not perfectly stable. It can be affected by power saving cycles,
-warped to insert leap seconds, or even turned back or forth by the
-system administrator affecting long term measurements. <footnote>
- <para>Since no other Linux multimedia
-API supports unadjusted time it would be foolish to introduce here. We
-must use a universally supported clock to synchronize different media,
-hence time of day.</para>
- </footnote></para>
-
- <table frame="none" pgwide="1" id="v4l2-buffer">
- <title>struct <structname>v4l2_buffer</structname></title>
- <tgroup cols="4">
- &cs-ustr;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>index</structfield></entry>
- <entry></entry>
- <entry>Number of the buffer, set by the application. This
-field is only used for <link linkend="mmap">memory mapping</link> I/O
-and can range from zero to the number of buffers allocated
-with the &VIDIOC-REQBUFS; ioctl (&v4l2-requestbuffers; <structfield>count</structfield>) minus one.</entry>
- </row>
- <row>
- <entry>&v4l2-buf-type;</entry>
- <entry><structfield>type</structfield></entry>
- <entry></entry>
- <entry>Type of the buffer, same as &v4l2-format;
-<structfield>type</structfield> or &v4l2-requestbuffers;
-<structfield>type</structfield>, set by the application.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>bytesused</structfield></entry>
- <entry></entry>
- <entry>The number of bytes occupied by the data in the
-buffer. It depends on the negotiated data format and may change with
-each buffer for compressed variable size data like JPEG images.
-Drivers must set this field when <structfield>type</structfield>
-refers to an input stream, applications when an output stream.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>flags</structfield></entry>
- <entry></entry>
- <entry>Flags set by the application or driver, see <xref
-linkend="buffer-flags" />.</entry>
- </row>
- <row>
- <entry>&v4l2-field;</entry>
- <entry><structfield>field</structfield></entry>
- <entry></entry>
- <entry>Indicates the field order of the image in the
-buffer, see <xref linkend="v4l2-field" />. This field is not used when
-the buffer contains VBI data. Drivers must set it when
-<structfield>type</structfield> refers to an input stream,
-applications when an output stream.</entry>
- </row>
- <row>
- <entry>struct timeval</entry>
- <entry><structfield>timestamp</structfield></entry>
- <entry></entry>
- <entry><para>For input streams this is the
-system time (as returned by the <function>gettimeofday()</function>
-function) when the first data byte was captured. For output streams
-the data will not be displayed before this time, secondary to the
-nominal frame rate determined by the current video standard in
-enqueued order. Applications can for example zero this field to
-display frames as soon as possible. The driver stores the time at
-which the first data byte was actually sent out in the
-<structfield>timestamp</structfield> field. This permits
-applications to monitor the drift between the video and system
-clock.</para></entry>
- </row>
- <row>
- <entry>&v4l2-timecode;</entry>
- <entry><structfield>timecode</structfield></entry>
- <entry></entry>
- <entry>When <structfield>type</structfield> is
-<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant> and the
-<constant>V4L2_BUF_FLAG_TIMECODE</constant> flag is set in
-<structfield>flags</structfield>, this structure contains a frame
-timecode. In <link linkend="v4l2-field">V4L2_FIELD_ALTERNATE</link>
-mode the top and bottom field contain the same timecode.
-Timecodes are intended to help video editing and are typically recorded on
-video tapes, but also embedded in compressed formats like MPEG. This
-field is independent of the <structfield>timestamp</structfield> and
-<structfield>sequence</structfield> fields.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>sequence</structfield></entry>
- <entry></entry>
- <entry>Set by the driver, counting the frames in the
-sequence.</entry>
- </row>
- <row>
- <entry spanname="hspan"><para>In <link
-linkend="v4l2-field">V4L2_FIELD_ALTERNATE</link> mode the top and
-bottom field have the same sequence number. The count starts at zero
-and includes dropped or repeated frames. A dropped frame was received
-by an input device but could not be stored due to lack of free buffer
-space. A repeated frame was displayed again by an output device
-because the application did not pass new data in
-time.</para><para>Note this may count the frames received
-e.g. over USB, without taking into account the frames dropped by the
-remote hardware due to limited compression throughput or bus
-bandwidth. These devices identify by not enumerating any video
-standards, see <xref linkend="standard" />.</para></entry>
- </row>
- <row>
- <entry>&v4l2-memory;</entry>
- <entry><structfield>memory</structfield></entry>
- <entry></entry>
- <entry>This field must be set by applications and/or drivers
-in accordance with the selected I/O method.</entry>
- </row>
- <row>
- <entry>union</entry>
- <entry><structfield>m</structfield></entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u32</entry>
- <entry><structfield>offset</structfield></entry>
- <entry>For the single-planar API and when
-<structfield>memory</structfield> is <constant>V4L2_MEMORY_MMAP</constant> this
-is the offset of the buffer from the start of the device memory. The value is
-returned by the driver and apart of serving as parameter to the &func-mmap;
-function not useful for applications. See <xref linkend="mmap" /> for details
- </entry>
- </row>
- <row>
- <entry></entry>
- <entry>unsigned long</entry>
- <entry><structfield>userptr</structfield></entry>
- <entry>For the single-planar API and when
-<structfield>memory</structfield> is <constant>V4L2_MEMORY_USERPTR</constant>
-this is a pointer to the buffer (casted to unsigned long type) in virtual
-memory, set by the application. See <xref linkend="userp" /> for details.
- </entry>
- </row>
- <row>
- <entry></entry>
- <entry>struct v4l2_plane</entry>
- <entry><structfield>*planes</structfield></entry>
- <entry>When using the multi-planar API, contains a userspace pointer
- to an array of &v4l2-plane;. The size of the array should be put
- in the <structfield>length</structfield> field of this
- <structname>v4l2_buffer</structname> structure.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>length</structfield></entry>
- <entry></entry>
- <entry>Size of the buffer (not the payload) in bytes for the
- single-planar API. For the multi-planar API should contain the
- number of elements in the <structfield>planes</structfield> array.
- </entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>input</structfield></entry>
- <entry></entry>
- <entry>Some video capture drivers support rapid and
-synchronous video input changes, a function useful for example in
-video surveillance applications. For this purpose applications set the
-<constant>V4L2_BUF_FLAG_INPUT</constant> flag, and this field to the
-number of a video input as in &v4l2-input; field
-<structfield>index</structfield>.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield></entry>
- <entry></entry>
- <entry>A place holder for future extensions and custom
-(driver defined) buffer types
-<constant>V4L2_BUF_TYPE_PRIVATE</constant> and higher. Applications
-should set this to 0.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table frame="none" pgwide="1" id="v4l2-plane">
- <title>struct <structname>v4l2_plane</structname></title>
- <tgroup cols="4">
- &cs-ustr;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>bytesused</structfield></entry>
- <entry></entry>
- <entry>The number of bytes occupied by data in the plane
- (its payload).</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>length</structfield></entry>
- <entry></entry>
- <entry>Size in bytes of the plane (not its payload).</entry>
- </row>
- <row>
- <entry>union</entry>
- <entry><structfield>m</structfield></entry>
- <entry></entry>
- <entry></entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u32</entry>
- <entry><structfield>mem_offset</structfield></entry>
- <entry>When the memory type in the containing &v4l2-buffer; is
- <constant>V4L2_MEMORY_MMAP</constant>, this is the value that
- should be passed to &func-mmap;, similar to the
- <structfield>offset</structfield> field in &v4l2-buffer;.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>__unsigned long</entry>
- <entry><structfield>userptr</structfield></entry>
- <entry>When the memory type in the containing &v4l2-buffer; is
- <constant>V4L2_MEMORY_USERPTR</constant>, this is a userspace
- pointer to the memory allocated for this plane by an application.
- </entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>data_offset</structfield></entry>
- <entry></entry>
- <entry>Offset in bytes to video data in the plane, if applicable.
- </entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved[11]</structfield></entry>
- <entry></entry>
- <entry>Reserved for future use. Should be zeroed by an
- application.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table frame="none" pgwide="1" id="v4l2-buf-type">
- <title>enum v4l2_buf_type</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant></entry>
- <entry>1</entry>
- <entry>Buffer of a single-planar video capture stream, see <xref
- linkend="capture" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant>
- </entry>
- <entry>9</entry>
- <entry>Buffer of a multi-planar video capture stream, see <xref
- linkend="capture" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant></entry>
- <entry>2</entry>
- <entry>Buffer of a single-planar video output stream, see <xref
- linkend="output" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant>
- </entry>
- <entry>10</entry>
- <entry>Buffer of a multi-planar video output stream, see <xref
- linkend="output" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant></entry>
- <entry>3</entry>
- <entry>Buffer for video overlay, see <xref linkend="overlay" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_VBI_CAPTURE</constant></entry>
- <entry>4</entry>
- <entry>Buffer of a raw VBI capture stream, see <xref
- linkend="raw-vbi" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_VBI_OUTPUT</constant></entry>
- <entry>5</entry>
- <entry>Buffer of a raw VBI output stream, see <xref
- linkend="raw-vbi" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_SLICED_VBI_CAPTURE</constant></entry>
- <entry>6</entry>
- <entry>Buffer of a sliced VBI capture stream, see <xref
- linkend="sliced" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_SLICED_VBI_OUTPUT</constant></entry>
- <entry>7</entry>
- <entry>Buffer of a sliced VBI output stream, see <xref
- linkend="sliced" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY</constant></entry>
- <entry>8</entry>
- <entry>Buffer for video output overlay (OSD), see <xref
- linkend="osd" />. Status: <link
-linkend="experimental">Experimental</link>.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_PRIVATE</constant></entry>
- <entry>0x80</entry>
- <entry>This and higher values are reserved for custom
-(driver defined) buffer types.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table frame="none" pgwide="1" id="buffer-flags">
- <title>Buffer Flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_BUF_FLAG_MAPPED</constant></entry>
- <entry>0x0001</entry>
- <entry>The buffer resides in device memory and has been mapped
-into the application's address space, see <xref linkend="mmap" /> for details.
-Drivers set or clear this flag when the
-<link linkend="vidioc-querybuf">VIDIOC_QUERYBUF</link>, <link
- linkend="vidioc-qbuf">VIDIOC_QBUF</link> or <link
- linkend="vidioc-qbuf">VIDIOC_DQBUF</link> ioctl is called. Set by the driver.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_FLAG_QUEUED</constant></entry>
- <entry>0x0002</entry>
- <entry>Internally drivers maintain two buffer queues, an
-incoming and outgoing queue. When this flag is set, the buffer is
-currently on the incoming queue. It automatically moves to the
-outgoing queue after the buffer has been filled (capture devices) or
-displayed (output devices). Drivers set or clear this flag when the
-<constant>VIDIOC_QUERYBUF</constant> ioctl is called. After
-(successful) calling the <constant>VIDIOC_QBUF </constant>ioctl it is
-always set and after <constant>VIDIOC_DQBUF</constant> always
-cleared.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_FLAG_DONE</constant></entry>
- <entry>0x0004</entry>
- <entry>When this flag is set, the buffer is currently on
-the outgoing queue, ready to be dequeued from the driver. Drivers set
-or clear this flag when the <constant>VIDIOC_QUERYBUF</constant> ioctl
-is called. After calling the <constant>VIDIOC_QBUF</constant> or
-<constant>VIDIOC_DQBUF</constant> it is always cleared. Of course a
-buffer cannot be on both queues at the same time, the
-<constant>V4L2_BUF_FLAG_QUEUED</constant> and
-<constant>V4L2_BUF_FLAG_DONE</constant> flag are mutually exclusive.
-They can be both cleared however, then the buffer is in "dequeued"
-state, in the application domain to say so.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_FLAG_ERROR</constant></entry>
- <entry>0x0040</entry>
- <entry>When this flag is set, the buffer has been dequeued
- successfully, although the data might have been corrupted.
- This is recoverable, streaming may continue as normal and
- the buffer may be reused normally.
- Drivers set this flag when the <constant>VIDIOC_DQBUF</constant>
- ioctl is called.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_FLAG_KEYFRAME</constant></entry>
- <entry>0x0008</entry>
- <entry>Drivers set or clear this flag when calling the
-<constant>VIDIOC_DQBUF</constant> ioctl. It may be set by video
-capture devices when the buffer contains a compressed image which is a
-key frame (or field), &ie; can be decompressed on its own.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_FLAG_PFRAME</constant></entry>
- <entry>0x0010</entry>
- <entry>Similar to <constant>V4L2_BUF_FLAG_KEYFRAME</constant>
-this flags predicted frames or fields which contain only differences to a
-previous key frame.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_FLAG_BFRAME</constant></entry>
- <entry>0x0020</entry>
- <entry>Similar to <constant>V4L2_BUF_FLAG_PFRAME</constant>
- this is a bidirectional predicted frame or field. [ooc tbd]</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_FLAG_TIMECODE</constant></entry>
- <entry>0x0100</entry>
- <entry>The <structfield>timecode</structfield> field is valid.
-Drivers set or clear this flag when the <constant>VIDIOC_DQBUF</constant>
-ioctl is called.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_FLAG_INPUT</constant></entry>
- <entry>0x0200</entry>
- <entry>The <structfield>input</structfield> field is valid.
-Applications set or clear this flag before calling the
-<constant>VIDIOC_QBUF</constant> ioctl.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-memory">
- <title>enum v4l2_memory</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MEMORY_MMAP</constant></entry>
- <entry>1</entry>
- <entry>The buffer is used for <link linkend="mmap">memory
-mapping</link> I/O.</entry>
- </row>
- <row>
- <entry><constant>V4L2_MEMORY_USERPTR</constant></entry>
- <entry>2</entry>
- <entry>The buffer is used for <link linkend="userp">user
-pointer</link> I/O.</entry>
- </row>
- <row>
- <entry><constant>V4L2_MEMORY_OVERLAY</constant></entry>
- <entry>3</entry>
- <entry>[to do]</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <section>
- <title>Timecodes</title>
-
- <para>The <structname>v4l2_timecode</structname> structure is
-designed to hold a <xref linkend="smpte12m" /> or similar timecode.
-(struct <structname>timeval</structname> timestamps are stored in
-&v4l2-buffer; field <structfield>timestamp</structfield>.)</para>
-
- <table frame="none" pgwide="1" id="v4l2-timecode">
- <title>struct <structname>v4l2_timecode</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>type</structfield></entry>
- <entry>Frame rate the timecodes are based on, see <xref
- linkend="timecode-type" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>flags</structfield></entry>
- <entry>Timecode flags, see <xref linkend="timecode-flags" />.</entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>frames</structfield></entry>
- <entry>Frame count, 0 ... 23/24/29/49/59, depending on the
- type of timecode.</entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>seconds</structfield></entry>
- <entry>Seconds count, 0 ... 59. This is a binary, not BCD number.</entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>minutes</structfield></entry>
- <entry>Minutes count, 0 ... 59. This is a binary, not BCD number.</entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>hours</structfield></entry>
- <entry>Hours count, 0 ... 29. This is a binary, not BCD number.</entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>userbits</structfield>[4]</entry>
- <entry>The "user group" bits from the timecode.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table frame="none" pgwide="1" id="timecode-type">
- <title>Timecode Types</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_TC_TYPE_24FPS</constant></entry>
- <entry>1</entry>
- <entry>24 frames per second, i. e. film.</entry>
- </row>
- <row>
- <entry><constant>V4L2_TC_TYPE_25FPS</constant></entry>
- <entry>2</entry>
- <entry>25 frames per second, &ie; PAL or SECAM video.</entry>
- </row>
- <row>
- <entry><constant>V4L2_TC_TYPE_30FPS</constant></entry>
- <entry>3</entry>
- <entry>30 frames per second, &ie; NTSC video.</entry>
- </row>
- <row>
- <entry><constant>V4L2_TC_TYPE_50FPS</constant></entry>
- <entry>4</entry>
- <entry></entry>
- </row>
- <row>
- <entry><constant>V4L2_TC_TYPE_60FPS</constant></entry>
- <entry>5</entry>
- <entry></entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table frame="none" pgwide="1" id="timecode-flags">
- <title>Timecode Flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_TC_FLAG_DROPFRAME</constant></entry>
- <entry>0x0001</entry>
- <entry>Indicates "drop frame" semantics for counting frames
-in 29.97 fps material. When set, frame numbers 0 and 1 at the start of
-each minute, except minutes 0, 10, 20, 30, 40, 50 are omitted from the
-count.</entry>
- </row>
- <row>
- <entry><constant>V4L2_TC_FLAG_COLORFRAME</constant></entry>
- <entry>0x0002</entry>
- <entry>The "color frame" flag.</entry>
- </row>
- <row>
- <entry><constant>V4L2_TC_USERBITS_field</constant></entry>
- <entry>0x000C</entry>
- <entry>Field mask for the "binary group flags".</entry>
- </row>
- <row>
- <entry><constant>V4L2_TC_USERBITS_USERDEFINED</constant></entry>
- <entry>0x0000</entry>
- <entry>Unspecified format.</entry>
- </row>
- <row>
- <entry><constant>V4L2_TC_USERBITS_8BITCHARS</constant></entry>
- <entry>0x0008</entry>
- <entry>8-bit ISO characters.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </section>
- </section>
-
- <section id="field-order">
- <title>Field Order</title>
-
- <para>We have to distinguish between progressive and interlaced
-video. Progressive video transmits all lines of a video image
-sequentially. Interlaced video divides an image into two fields,
-containing only the odd and even lines of the image, respectively.
-Alternating the so called odd and even field are transmitted, and due
-to a small delay between fields a cathode ray TV displays the lines
-interleaved, yielding the original frame. This curious technique was
-invented because at refresh rates similar to film the image would
-fade out too quickly. Transmitting fields reduces the flicker without
-the necessity of doubling the frame rate and with it the bandwidth
-required for each channel.</para>
-
- <para>It is important to understand a video camera does not expose
-one frame at a time, merely transmitting the frames separated into
-fields. The fields are in fact captured at two different instances in
-time. An object on screen may well move between one field and the
-next. For applications analysing motion it is of paramount importance
-to recognize which field of a frame is older, the <emphasis>temporal
-order</emphasis>.</para>
-
- <para>When the driver provides or accepts images field by field
-rather than interleaved, it is also important applications understand
-how the fields combine to frames. We distinguish between top (aka odd) and
-bottom (aka even) fields, the <emphasis>spatial order</emphasis>: The first line
-of the top field is the first line of an interlaced frame, the first
-line of the bottom field is the second line of that frame.</para>
-
- <para>However because fields were captured one after the other,
-arguing whether a frame commences with the top or bottom field is
-pointless. Any two successive top and bottom, or bottom and top fields
-yield a valid frame. Only when the source was progressive to begin
-with, ⪚ when transferring film to video, two fields may come from
-the same frame, creating a natural order.</para>
-
- <para>Counter to intuition the top field is not necessarily the
-older field. Whether the older field contains the top or bottom lines
-is a convention determined by the video standard. Hence the
-distinction between temporal and spatial order of fields. The diagrams
-below should make this clearer.</para>
-
- <para>All video capture and output devices must report the current
-field order. Some drivers may permit the selection of a different
-order, to this end applications initialize the
-<structfield>field</structfield> field of &v4l2-pix-format; before
-calling the &VIDIOC-S-FMT; ioctl. If this is not desired it should
-have the value <constant>V4L2_FIELD_ANY</constant> (0).</para>
-
- <table frame="none" pgwide="1" id="v4l2-field">
- <title>enum v4l2_field</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_FIELD_ANY</constant></entry>
- <entry>0</entry>
- <entry>Applications request this field order when any
-one of the <constant>V4L2_FIELD_NONE</constant>,
-<constant>V4L2_FIELD_TOP</constant>,
-<constant>V4L2_FIELD_BOTTOM</constant>, or
-<constant>V4L2_FIELD_INTERLACED</constant> formats is acceptable.
-Drivers choose depending on hardware capabilities or e. g. the
-requested image size, and return the actual field order. &v4l2-buffer;
-<structfield>field</structfield> can never be
-<constant>V4L2_FIELD_ANY</constant>.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FIELD_NONE</constant></entry>
- <entry>1</entry>
- <entry>Images are in progressive format, not interlaced.
-The driver may also indicate this order when it cannot distinguish
-between <constant>V4L2_FIELD_TOP</constant> and
-<constant>V4L2_FIELD_BOTTOM</constant>.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FIELD_TOP</constant></entry>
- <entry>2</entry>
- <entry>Images consist of the top (aka odd) field only.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FIELD_BOTTOM</constant></entry>
- <entry>3</entry>
- <entry>Images consist of the bottom (aka even) field only.
-Applications may wish to prevent a device from capturing interlaced
-images because they will have "comb" or "feathering" artefacts around
-moving objects.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FIELD_INTERLACED</constant></entry>
- <entry>4</entry>
- <entry>Images contain both fields, interleaved line by
-line. The temporal order of the fields (whether the top or bottom
-field is first transmitted) depends on the current video standard.
-M/NTSC transmits the bottom field first, all other standards the top
-field first.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FIELD_SEQ_TB</constant></entry>
- <entry>5</entry>
- <entry>Images contain both fields, the top field lines
-are stored first in memory, immediately followed by the bottom field
-lines. Fields are always stored in temporal order, the older one first
-in memory. Image sizes refer to the frame, not fields.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FIELD_SEQ_BT</constant></entry>
- <entry>6</entry>
- <entry>Images contain both fields, the bottom field
-lines are stored first in memory, immediately followed by the top
-field lines. Fields are always stored in temporal order, the older one
-first in memory. Image sizes refer to the frame, not fields.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FIELD_ALTERNATE</constant></entry>
- <entry>7</entry>
- <entry>The two fields of a frame are passed in separate
-buffers, in temporal order, &ie; the older one first. To indicate the field
-parity (whether the current field is a top or bottom field) the driver
-or application, depending on data direction, must set &v4l2-buffer;
-<structfield>field</structfield> to
-<constant>V4L2_FIELD_TOP</constant> or
-<constant>V4L2_FIELD_BOTTOM</constant>. Any two successive fields pair
-to build a frame. If fields are successive, without any dropped fields
-between them (fields can drop individually), can be determined from
-the &v4l2-buffer; <structfield>sequence</structfield> field. Image
-sizes refer to the frame, not fields. This format cannot be selected
-when using the read/write I/O method.<!-- Where it's indistinguishable
-from V4L2_FIELD_SEQ_*. --></entry>
- </row>
- <row>
- <entry><constant>V4L2_FIELD_INTERLACED_TB</constant></entry>
- <entry>8</entry>
- <entry>Images contain both fields, interleaved line by
-line, top field first. The top field is transmitted first.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FIELD_INTERLACED_BT</constant></entry>
- <entry>9</entry>
- <entry>Images contain both fields, interleaved line by
-line, top field first. The bottom field is transmitted first.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <figure id="fieldseq-tb">
- <title>Field Order, Top Field First Transmitted</title>
- <mediaobject>
- <imageobject>
- <imagedata fileref="fieldseq_tb.pdf" format="PS" />
- </imageobject>
- <imageobject>
- <imagedata fileref="fieldseq_tb.gif" format="GIF" />
- </imageobject>
- </mediaobject>
- </figure>
-
- <figure id="fieldseq-bt">
- <title>Field Order, Bottom Field First Transmitted</title>
- <mediaobject>
- <imageobject>
- <imagedata fileref="fieldseq_bt.pdf" format="PS" />
- </imageobject>
- <imageobject>
- <imagedata fileref="fieldseq_bt.gif" format="GIF" />
- </imageobject>
- </mediaobject>
- </figure>
- </section>
-
- <!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
- -->
diff --git a/Documentation/DocBook/v4l/lirc_device_interface.xml b/Documentation/DocBook/v4l/lirc_device_interface.xml
deleted file mode 100644
index 0e0453f..0000000
--- a/Documentation/DocBook/v4l/lirc_device_interface.xml
+++ /dev/null
@@ -1,251 +0,0 @@
-<section id="lirc_dev">
-<title>LIRC Device Interface</title>
-
-
-<section id="lirc_dev_intro">
-<title>Introduction</title>
-
-<para>The LIRC device interface is a bi-directional interface for
-transporting raw IR data between userspace and kernelspace. Fundamentally,
-it is just a chardev (/dev/lircX, for X = 0, 1, 2, ...), with a number
-of standard struct file_operations defined on it. With respect to
-transporting raw IR data to and fro, the essential fops are read, write
-and ioctl.</para>
-
-<para>Example dmesg output upon a driver registering w/LIRC:</para>
- <blockquote>
- <para>$ dmesg |grep lirc_dev</para>
- <para>lirc_dev: IR Remote Control driver registered, major 248</para>
- <para>rc rc0: lirc_dev: driver ir-lirc-codec (mceusb) registered at minor = 0</para>
- </blockquote>
-
-<para>What you should see for a chardev:</para>
- <blockquote>
- <para>$ ls -l /dev/lirc*</para>
- <para>crw-rw---- 1 root root 248, 0 Jul 2 22:20 /dev/lirc0</para>
- </blockquote>
-</section>
-
-<section id="lirc_read">
-<title>LIRC read fop</title>
-
-<para>The lircd userspace daemon reads raw IR data from the LIRC chardev. The
-exact format of the data depends on what modes a driver supports, and what
-mode has been selected. lircd obtains supported modes and sets the active mode
-via the ioctl interface, detailed at <xref linkend="lirc_ioctl"/>. The generally
-preferred mode is LIRC_MODE_MODE2, in which packets containing an int value
-describing an IR signal are read from the chardev.</para>
-
-<para>See also <ulink url="http://www.lirc.org/html/technical.html">http://www.lirc.org/html/technical.html</ulink> for more info.</para>
-</section>
-
-<section id="lirc_write">
-<title>LIRC write fop</title>
-
-<para>The data written to the chardev is a pulse/space sequence of integer
-values. Pulses and spaces are only marked implicitly by their position. The
-data must start and end with a pulse, therefore, the data must always include
-an uneven number of samples. The write function must block until the data has
-been transmitted by the hardware.</para>
-</section>
-
-<section id="lirc_ioctl">
-<title>LIRC ioctl fop</title>
-
-<para>The LIRC device's ioctl definition is bound by the ioctl function
-definition of struct file_operations, leaving us with an unsigned int
-for the ioctl command and an unsigned long for the arg. For the purposes
-of ioctl portability across 32-bit and 64-bit, these values are capped
-to their 32-bit sizes.</para>
-
-<para>The following ioctls can be used to change specific hardware settings.
-In general each driver should have a default set of settings. The driver
-implementation is expected to re-apply the default settings when the device
-is closed by user-space, so that every application opening the device can rely
-on working with the default settings initially.</para>
-
-<variablelist>
- <varlistentry>
- <term>LIRC_GET_FEATURES</term>
- <listitem>
- <para>Obviously, get the underlying hardware device's features. If a driver
- does not announce support of certain features, calling of the corresponding
- ioctls is undefined.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_GET_SEND_MODE</term>
- <listitem>
- <para>Get supported transmit mode. Only LIRC_MODE_PULSE is supported by lircd.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_GET_REC_MODE</term>
- <listitem>
- <para>Get supported receive modes. Only LIRC_MODE_MODE2 and LIRC_MODE_LIRCCODE
- are supported by lircd.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_GET_SEND_CARRIER</term>
- <listitem>
- <para>Get carrier frequency (in Hz) currently used for transmit.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_GET_REC_CARRIER</term>
- <listitem>
- <para>Get carrier frequency (in Hz) currently used for IR reception.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_{G,S}ET_{SEND,REC}_DUTY_CYCLE</term>
- <listitem>
- <para>Get/set the duty cycle (from 0 to 100) of the carrier signal. Currently,
- no special meaning is defined for 0 or 100, but this could be used to switch
- off carrier generation in the future, so these values should be reserved.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_GET_REC_RESOLUTION</term>
- <listitem>
- <para>Some receiver have maximum resolution which is defined by internal
- sample rate or data format limitations. E.g. it's common that signals can
- only be reported in 50 microsecond steps. This integer value is used by
- lircd to automatically adjust the aeps tolerance value in the lircd
- config file.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_GET_M{IN,AX}_TIMEOUT</term>
- <listitem>
- <para>Some devices have internal timers that can be used to detect when
- there's no IR activity for a long time. This can help lircd in detecting
- that a IR signal is finished and can speed up the decoding process.
- Returns an integer value with the minimum/maximum timeout that can be
- set. Some devices have a fixed timeout, in that case both ioctls will
- return the same value even though the timeout cannot be changed.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_GET_M{IN,AX}_FILTER_{PULSE,SPACE}</term>
- <listitem>
- <para>Some devices are able to filter out spikes in the incoming signal
- using given filter rules. These ioctls return the hardware capabilities
- that describe the bounds of the possible filters. Filter settings depend
- on the IR protocols that are expected. lircd derives the settings from
- all protocols definitions found in its config file.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_GET_LENGTH</term>
- <listitem>
- <para>Retrieves the code length in bits (only for LIRC_MODE_LIRCCODE).
- Reads on the device must be done in blocks matching the bit count.
- The bit could should be rounded up so that it matches full bytes.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_SET_{SEND,REC}_MODE</term>
- <listitem>
- <para>Set send/receive mode. Largely obsolete for send, as only
- LIRC_MODE_PULSE is supported.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_SET_{SEND,REC}_CARRIER</term>
- <listitem>
- <para>Set send/receive carrier (in Hz).</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_SET_TRANSMITTER_MASK</term>
- <listitem>
- <para>This enables the given set of transmitters. The first transmitter
- is encoded by the least significant bit, etc. When an invalid bit mask
- is given, i.e. a bit is set, even though the device does not have so many
- transitters, then this ioctl returns the number of available transitters
- and does nothing otherwise.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_SET_REC_TIMEOUT</term>
- <listitem>
- <para>Sets the integer value for IR inactivity timeout (cf.
- LIRC_GET_MIN_TIMEOUT and LIRC_GET_MAX_TIMEOUT). A value of 0 (if
- supported by the hardware) disables all hardware timeouts and data should
- be reported as soon as possible. If the exact value cannot be set, then
- the next possible value _greater_ than the given value should be set.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_SET_REC_TIMEOUT_REPORTS</term>
- <listitem>
- <para>Enable (1) or disable (0) timeout reports in LIRC_MODE_MODE2. By
- default, timeout reports should be turned off.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_SET_REC_FILTER_{,PULSE,SPACE}</term>
- <listitem>
- <para>Pulses/spaces shorter than this are filtered out by hardware. If
- filters cannot be set independently for pulse/space, the corresponding
- ioctls must return an error and LIRC_SET_REC_FILTER shall be used instead.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_SET_MEASURE_CARRIER_MODE</term>
- <listitem>
- <para>Enable (1)/disable (0) measure mode. If enabled, from the next key
- press on, the driver will send LIRC_MODE2_FREQUENCY packets. By default
- this should be turned off.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_SET_REC_{DUTY_CYCLE,CARRIER}_RANGE</term>
- <listitem>
- <para>To set a range use LIRC_SET_REC_DUTY_CYCLE_RANGE/LIRC_SET_REC_CARRIER_RANGE
- with the lower bound first and later LIRC_SET_REC_DUTY_CYCLE/LIRC_SET_REC_CARRIER
- with the upper bound.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_NOTIFY_DECODE</term>
- <listitem>
- <para>This ioctl is called by lircd whenever a successful decoding of an
- incoming IR signal could be done. This can be used by supporting hardware
- to give visual feedback to the user e.g. by flashing a LED.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_SETUP_{START,END}</term>
- <listitem>
- <para>Setting of several driver parameters can be optimized by encapsulating
- the according ioctl calls with LIRC_SETUP_START/LIRC_SETUP_END. When a
- driver receives a LIRC_SETUP_START ioctl it can choose to not commit
- further setting changes to the hardware until a LIRC_SETUP_END is received.
- But this is open to the driver implementation and every driver must also
- handle parameter changes which are not encapsulated by LIRC_SETUP_START
- and LIRC_SETUP_END. Drivers can also choose to ignore these ioctls.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>LIRC_SET_WIDEBAND_RECEIVER</term>
- <listitem>
- <para>Some receivers are equipped with special wide band receiver which is intended
- to be used to learn output of existing remote.
- Calling that ioctl with (1) will enable it, and with (0) disable it.
- This might be useful of receivers that have otherwise narrow band receiver
- that prevents them to be used with some remotes.
- Wide band receiver might also be more precise
- On the other hand its disadvantage it usually reduced range of reception.
- Note: wide band receiver might be implictly enabled if you enable
- carrier reports. In that case it will be disabled as soon as you disable
- carrier reports. Trying to disable wide band receiver while carrier
- reports are active will do nothing.</para>
- </listitem>
- </varlistentry>
-</variablelist>
-
-</section>
-</section>
diff --git a/Documentation/DocBook/v4l/media-func-ioctl.xml b/Documentation/DocBook/v4l/media-func-ioctl.xml
deleted file mode 100644
index bda8604..0000000
--- a/Documentation/DocBook/v4l/media-func-ioctl.xml
+++ /dev/null
@@ -1,116 +0,0 @@
-<refentry id="media-func-ioctl">
- <refmeta>
- <refentrytitle>media ioctl()</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>media-ioctl</refname>
- <refpurpose>Control a media device</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcsynopsisinfo>#include <sys/ioctl.h></funcsynopsisinfo>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>void *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>Media ioctl request code as defined in the media.h header file,
- for example MEDIA_IOC_SETUP_LINK.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para>Pointer to a request-specific structure.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
- <para>The <function>ioctl()</function> function manipulates media device
- parameters. The argument <parameter>fd</parameter> must be an open file
- descriptor.</para>
- <para>The ioctl <parameter>request</parameter> code specifies the media
- function to be called. It has encoded in it whether the argument is an
- input, output or read/write parameter, and the size of the argument
- <parameter>argp</parameter> in bytes.</para>
- <para>Macros and structures definitions specifying media ioctl requests and
- their parameters are located in the media.h header file. All media ioctl
- requests, their respective function and parameters are specified in
- <xref linkend="media-user-func" />.</para>
- </refsect1>
-
- <refsect1>
- <title>Return Value</title>
-
- <para><function>ioctl()</function> returns <returnvalue>0</returnvalue> on
- success. On failure, <returnvalue>-1</returnvalue> is returned, and the
- <varname>errno</varname> variable is set appropriately. Generic error codes
- are listed below, and request-specific error codes are listed in the
- individual requests descriptions.</para>
- <para>When an ioctl that takes an output or read/write parameter fails,
- the parameter remains unmodified.</para>
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EBADF</errorcode></term>
- <listitem>
- <para><parameter>fd</parameter> is not a valid open file descriptor.
- </para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EFAULT</errorcode></term>
- <listitem>
- <para><parameter>argp</parameter> references an inaccessible memory
- area.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The <parameter>request</parameter> or the data pointed to by
- <parameter>argp</parameter> is not valid. This is a very common error
- code, see the individual ioctl requests listed in
- <xref linkend="media-user-func" /> for actual causes.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>ENOMEM</errorcode></term>
- <listitem>
- <para>Insufficient kernel memory was available to complete the
- request.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>ENOTTY</errorcode></term>
- <listitem>
- <para><parameter>fd</parameter> is not associated with a character
- special device.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
diff --git a/Documentation/DocBook/v4l/media-ioc-device-info.xml b/Documentation/DocBook/v4l/media-ioc-device-info.xml
deleted file mode 100644
index 1f32373..0000000
--- a/Documentation/DocBook/v4l/media-ioc-device-info.xml
+++ /dev/null
@@ -1,133 +0,0 @@
-<refentry id="media-ioc-device-info">
- <refmeta>
- <refentrytitle>ioctl MEDIA_IOC_DEVICE_INFO</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>MEDIA_IOC_DEVICE_INFO</refname>
- <refpurpose>Query device information</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct media_device_info *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>File descriptor returned by
- <link linkend='media-func-open'><function>open()</function></link>.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>MEDIA_IOC_DEVICE_INFO</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>All media devices must support the <constant>MEDIA_IOC_DEVICE_INFO</constant>
- ioctl. To query device information, applications call the ioctl with a
- pointer to a &media-device-info;. The driver fills the structure and returns
- the information to the application.
- The ioctl never fails.</para>
-
- <table pgwide="1" frame="none" id="media-device-info">
- <title>struct <structname>media_device_info</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>char</entry>
- <entry><structfield>driver</structfield>[16]</entry>
- <entry><para>Name of the driver implementing the media API as a
- NUL-terminated ASCII string. The driver version is stored in the
- <structfield>driver_version</structfield> field.</para>
- <para>Driver specific applications can use this information to
- verify the driver identity. It is also useful to work around
- known bugs, or to identify drivers in error reports.</para></entry>
- </row>
- <row>
- <entry>char</entry>
- <entry><structfield>model</structfield>[32]</entry>
- <entry>Device model name as a NUL-terminated UTF-8 string. The
- device version is stored in the <structfield>device_version</structfield>
- field and is not be appended to the model name.</entry>
- </row>
- <row>
- <entry>char</entry>
- <entry><structfield>serial</structfield>[40]</entry>
- <entry>Serial number as a NUL-terminated ASCII string.</entry>
- </row>
- <row>
- <entry>char</entry>
- <entry><structfield>bus_info</structfield>[32]</entry>
- <entry>Location of the device in the system as a NUL-terminated
- ASCII string. This includes the bus type name (PCI, USB, ...) and a
- bus-specific identifier.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>media_version</structfield></entry>
- <entry>Media API version, formatted with the
- <constant>KERNEL_VERSION()</constant> macro.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>hw_revision</structfield></entry>
- <entry>Hardware device revision in a driver-specific format.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>media_version</structfield></entry>
- <entry>Media device driver version, formatted with the
- <constant>KERNEL_VERSION()</constant> macro. Together with the
- <structfield>driver</structfield> field this identifies a particular
- driver.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[31]</entry>
- <entry>Reserved for future extensions. Drivers and applications must
- set this array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- <para>The <structfield>serial</structfield> and <structfield>bus_info</structfield>
- fields can be used to distinguish between multiple instances of otherwise
- identical hardware. The serial number takes precedence when provided and can
- be assumed to be unique. If the serial number is an empty string, the
- <structfield>bus_info</structfield> field can be used instead. The
- <structfield>bus_info</structfield> field is guaranteed to be unique, but
- can vary across reboots or device unplug/replug.</para>
- </refsect1>
-
- <refsect1>
- <title>Return value</title>
- <para>This function doesn't return specific error codes.</para>
- </refsect1>
-</refentry>
diff --git a/Documentation/DocBook/v4l/media-ioc-enum-links.xml b/Documentation/DocBook/v4l/media-ioc-enum-links.xml
deleted file mode 100644
index d2fc73e..0000000
--- a/Documentation/DocBook/v4l/media-ioc-enum-links.xml
+++ /dev/null
@@ -1,207 +0,0 @@
-<refentry id="media-ioc-enum-links">
- <refmeta>
- <refentrytitle>ioctl MEDIA_IOC_ENUM_LINKS</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>MEDIA_IOC_ENUM_LINKS</refname>
- <refpurpose>Enumerate all pads and links for a given entity</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct media_links_enum *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>File descriptor returned by
- <link linkend='media-func-open'><function>open()</function></link>.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>MEDIA_IOC_ENUM_LINKS</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To enumerate pads and/or links for a given entity, applications set
- the entity field of a &media-links-enum; structure and initialize the
- &media-pad-desc; and &media-link-desc; structure arrays pointed by the
- <structfield>pads</structfield> and <structfield>links</structfield> fields.
- They then call the MEDIA_IOC_ENUM_LINKS ioctl with a pointer to this
- structure.</para>
- <para>If the <structfield>pads</structfield> field is not NULL, the driver
- fills the <structfield>pads</structfield> array with information about the
- entity's pads. The array must have enough room to store all the entity's
- pads. The number of pads can be retrieved with the &MEDIA-IOC-ENUM-ENTITIES;
- ioctl.</para>
- <para>If the <structfield>links</structfield> field is not NULL, the driver
- fills the <structfield>links</structfield> array with information about the
- entity's outbound links. The array must have enough room to store all the
- entity's outbound links. The number of outbound links can be retrieved with
- the &MEDIA-IOC-ENUM-ENTITIES; ioctl.</para>
- <para>Only forward links that originate at one of the entity's source pads
- are returned during the enumeration process.</para>
-
- <table pgwide="1" frame="none" id="media-links-enum">
- <title>struct <structname>media_links_enum</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>entity</structfield></entry>
- <entry>Entity id, set by the application.</entry>
- </row>
- <row>
- <entry>struct &media-pad-desc;</entry>
- <entry>*<structfield>pads</structfield></entry>
- <entry>Pointer to a pads array allocated by the application. Ignored
- if NULL.</entry>
- </row>
- <row>
- <entry>struct &media-link-desc;</entry>
- <entry>*<structfield>links</structfield></entry>
- <entry>Pointer to a links array allocated by the application. Ignored
- if NULL.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="media-pad-desc">
- <title>struct <structname>media_pad_desc</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>entity</structfield></entry>
- <entry>ID of the entity this pad belongs to.</entry>
- </row>
- <row>
- <entry>__u16</entry>
- <entry><structfield>index</structfield></entry>
- <entry>0-based pad index.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>flags</structfield></entry>
- <entry>Pad flags, see <xref linkend="media-pad-flag" /> for more details.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table frame="none" pgwide="1" id="media-pad-flag">
- <title>Media pad flags</title>
- <tgroup cols="2">
- <colspec colname="c1"/>
- <colspec colname="c2"/>
- <tbody valign="top">
- <row>
- <entry><constant>MEDIA_PAD_FL_SINK</constant></entry>
- <entry>Input pad, relative to the entity. Input pads sink data and
- are targets of links.</entry>
- </row>
- <row>
- <entry><constant>MEDIA_PAD_FL_SOURCE</constant></entry>
- <entry>Output pad, relative to the entity. Output pads source data
- and are origins of links.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="media-link-desc">
- <title>struct <structname>media_links_desc</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>struct &media-pad-desc;</entry>
- <entry><structfield>source</structfield></entry>
- <entry>Pad at the origin of this link.</entry>
- </row>
- <row>
- <entry>struct &media-pad-desc;</entry>
- <entry><structfield>sink</structfield></entry>
- <entry>Pad at the target of this link.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>flags</structfield></entry>
- <entry>Link flags, see <xref linkend="media-link-flag" /> for more details.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table frame="none" pgwide="1" id="media-link-flag">
- <title>Media link flags</title>
- <tgroup cols="2">
- <colspec colname="c1"/>
- <colspec colname="c2"/>
- <tbody valign="top">
- <row>
- <entry><constant>MEDIA_LNK_FL_ENABLED</constant></entry>
- <entry>The link is enabled and can be used to transfer media data.
- When two or more links target a sink pad, only one of them can be
- enabled at a time.</entry>
- </row>
- <row>
- <entry><constant>MEDIA_LNK_FL_IMMUTABLE</constant></entry>
- <entry>The link enabled state can't be modified at runtime. An
- immutable link is always enabled.</entry>
- </row>
- <row>
- <entry><constant>MEDIA_LNK_FL_DYNAMIC</constant></entry>
- <entry>The link enabled state can be modified during streaming. This
- flag is set by drivers and is read-only for applications.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- <para>One and only one of <constant>MEDIA_PAD_FL_SINK</constant> and
- <constant>MEDIA_PAD_FL_SOURCE</constant> must be set for every pad.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The &media-links-enum; <structfield>id</structfield> references
- a non-existing entity.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
diff --git a/Documentation/DocBook/v4l/media-ioc-setup-link.xml b/Documentation/DocBook/v4l/media-ioc-setup-link.xml
deleted file mode 100644
index cec97af..0000000
--- a/Documentation/DocBook/v4l/media-ioc-setup-link.xml
+++ /dev/null
@@ -1,93 +0,0 @@
-<refentry id="media-ioc-setup-link">
- <refmeta>
- <refentrytitle>ioctl MEDIA_IOC_SETUP_LINK</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>MEDIA_IOC_SETUP_LINK</refname>
- <refpurpose>Modify the properties of a link</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct media_link_desc *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>File descriptor returned by
- <link linkend='media-func-open'><function>open()</function></link>.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>MEDIA_IOC_SETUP_LINK</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To change link properties applications fill a &media-link-desc; with
- link identification information (source and sink pad) and the new requested
- link flags. They then call the MEDIA_IOC_SETUP_LINK ioctl with a pointer to
- that structure.</para>
- <para>The only configurable property is the <constant>ENABLED</constant>
- link flag to enable/disable a link. Links marked with the
- <constant>IMMUTABLE</constant> link flag can not be enabled or disabled.
- </para>
- <para>Link configuration has no side effect on other links. If an enabled
- link at the sink pad prevents the link from being enabled, the driver
- returns with an &EBUSY;.</para>
- <para>Only links marked with the <constant>DYNAMIC</constant> link flag can
- be enabled/disabled while streaming media data. Attempting to enable or
- disable a streaming non-dynamic link will return an &EBUSY;.</para>
- <para>If the specified link can't be found the driver returns with an
- &EINVAL;.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The link properties can't be changed because the link is
- currently busy. This can be caused, for instance, by an active media
- stream (audio or video) on the link. The ioctl shouldn't be retried if
- no other action is performed before to fix the problem.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The &media-link-desc; references a non-existing link, or the
- link is immutable and an attempt to modify its configuration was made.
- </para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
diff --git a/Documentation/DocBook/v4l/nv12mt.gif b/Documentation/DocBook/v4l/nv12mt.gif
deleted file mode 100644
index ef2d4cf..0000000
--- a/Documentation/DocBook/v4l/nv12mt.gif
+++ /dev/null
Binary files differ
diff --git a/Documentation/DocBook/v4l/nv12mt_example.gif b/Documentation/DocBook/v4l/nv12mt_example.gif
deleted file mode 100644
index df81d68..0000000
--- a/Documentation/DocBook/v4l/nv12mt_example.gif
+++ /dev/null
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diff --git a/Documentation/DocBook/v4l/pipeline.png b/Documentation/DocBook/v4l/pipeline.png
deleted file mode 100644
index f19b86c..0000000
--- a/Documentation/DocBook/v4l/pipeline.png
+++ /dev/null
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diff --git a/Documentation/DocBook/v4l/pixfmt.xml b/Documentation/DocBook/v4l/pixfmt.xml
deleted file mode 100644
index deb6602..0000000
--- a/Documentation/DocBook/v4l/pixfmt.xml
+++ /dev/null
@@ -1,951 +0,0 @@
- <title>Image Formats</title>
-
- <para>The V4L2 API was primarily designed for devices exchanging
-image data with applications. The
-<structname>v4l2_pix_format</structname> and <structname>v4l2_pix_format_mplane
-</structname> structures define the format and layout of an image in memory.
-The former is used with the single-planar API, while the latter is used with the
-multi-planar version (see <xref linkend="planar-apis"/>). Image formats are
-negotiated with the &VIDIOC-S-FMT; ioctl. (The explanations here focus on video
-capturing and output, for overlay frame buffer formats see also
-&VIDIOC-G-FBUF;.)</para>
-
-<section>
- <title>Single-planar format structure</title>
- <table pgwide="1" frame="none" id="v4l2-pix-format">
- <title>struct <structname>v4l2_pix_format</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>width</structfield></entry>
- <entry>Image width in pixels.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>height</structfield></entry>
- <entry>Image height in pixels.</entry>
- </row>
- <row>
- <entry spanname="hspan">Applications set these fields to
-request an image size, drivers return the closest possible values. In
-case of planar formats the <structfield>width</structfield> and
-<structfield>height</structfield> applies to the largest plane. To
-avoid ambiguities drivers must return values rounded up to a multiple
-of the scale factor of any smaller planes. For example when the image
-format is YUV 4:2:0, <structfield>width</structfield> and
-<structfield>height</structfield> must be multiples of two.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>pixelformat</structfield></entry>
- <entry>The pixel format or type of compression, set by the
-application. This is a little endian <link
-linkend="v4l2-fourcc">four character code</link>. V4L2 defines
-standard RGB formats in <xref linkend="rgb-formats" />, YUV formats in <xref
-linkend="yuv-formats" />, and reserved codes in <xref
-linkend="reserved-formats" /></entry>
- </row>
- <row>
- <entry>&v4l2-field;</entry>
- <entry><structfield>field</structfield></entry>
- <entry>Video images are typically interlaced. Applications
-can request to capture or output only the top or bottom field, or both
-fields interlaced or sequentially stored in one buffer or alternating
-in separate buffers. Drivers return the actual field order selected.
-For details see <xref linkend="field-order" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>bytesperline</structfield></entry>
- <entry>Distance in bytes between the leftmost pixels in two
-adjacent lines.</entry>
- </row>
- <row>
- <entry spanname="hspan"><para>Both applications and drivers
-can set this field to request padding bytes at the end of each line.
-Drivers however may ignore the value requested by the application,
-returning <structfield>width</structfield> times bytes per pixel or a
-larger value required by the hardware. That implies applications can
-just set this field to zero to get a reasonable
-default.</para><para>Video hardware may access padding bytes,
-therefore they must reside in accessible memory. Consider cases where
-padding bytes after the last line of an image cross a system page
-boundary. Input devices may write padding bytes, the value is
-undefined. Output devices ignore the contents of padding
-bytes.</para><para>When the image format is planar the
-<structfield>bytesperline</structfield> value applies to the largest
-plane and is divided by the same factor as the
-<structfield>width</structfield> field for any smaller planes. For
-example the Cb and Cr planes of a YUV 4:2:0 image have half as many
-padding bytes following each line as the Y plane. To avoid ambiguities
-drivers must return a <structfield>bytesperline</structfield> value
-rounded up to a multiple of the scale factor.</para></entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>sizeimage</structfield></entry>
- <entry>Size in bytes of the buffer to hold a complete image,
-set by the driver. Usually this is
-<structfield>bytesperline</structfield> times
-<structfield>height</structfield>. When the image consists of variable
-length compressed data this is the maximum number of bytes required to
-hold an image.</entry>
- </row>
- <row>
- <entry>&v4l2-colorspace;</entry>
- <entry><structfield>colorspace</structfield></entry>
- <entry>This information supplements the
-<structfield>pixelformat</structfield> and must be set by the driver,
-see <xref linkend="colorspaces" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>priv</structfield></entry>
- <entry>Reserved for custom (driver defined) additional
-information about formats. When not used drivers and applications must
-set this field to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-</section>
-
-<section>
- <title>Multi-planar format structures</title>
- <para>The <structname>v4l2_plane_pix_format</structname> structures define
- size and layout for each of the planes in a multi-planar format.
- The <structname>v4l2_pix_format_mplane</structname> structure contains
- information common to all planes (such as image width and height) and
- an array of <structname>v4l2_plane_pix_format</structname> structures,
- describing all planes of that format.</para>
- <table pgwide="1" frame="none" id="v4l2-plane-pix-format">
- <title>struct <structname>vl42_plane_pix_format</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>sizeimage</structfield></entry>
- <entry>Maximum size in bytes required for image data in this plane.
- </entry>
- </row>
- <row>
- <entry>__u16</entry>
- <entry><structfield>bytesperline</structfield></entry>
- <entry>Distance in bytes between the leftmost pixels in two adjacent
- lines.</entry>
- </row>
- <row>
- <entry>__u16</entry>
- <entry><structfield>reserved[7]</structfield></entry>
- <entry>Reserved for future extensions. Should be zeroed by the
- application.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- <table pgwide="1" frame="none" id="v4l2-pix-format-mplane">
- <title>struct <structname>v4l2_pix_format_mplane</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>width</structfield></entry>
- <entry>Image width in pixels.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>height</structfield></entry>
- <entry>Image height in pixels.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>pixelformat</structfield></entry>
- <entry>The pixel format. Both single- and multi-planar four character
-codes can be used.</entry>
- </row>
- <row>
- <entry>&v4l2-field;</entry>
- <entry><structfield>field</structfield></entry>
- <entry>See &v4l2-pix-format;.</entry>
- </row>
- <row>
- <entry>&v4l2-colorspace;</entry>
- <entry><structfield>colorspace</structfield></entry>
- <entry>See &v4l2-pix-format;.</entry>
- </row>
- <row>
- <entry>&v4l2-plane-pix-format;</entry>
- <entry><structfield>plane_fmt[VIDEO_MAX_PLANES]</structfield></entry>
- <entry>An array of structures describing format of each plane this
- pixel format consists of. The number of valid entries in this array
- has to be put in the <structfield>num_planes</structfield>
- field.</entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>num_planes</structfield></entry>
- <entry>Number of planes (i.e. separate memory buffers) for this format
- and the number of valid entries in the
- <structfield>plane_fmt</structfield> array.</entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>reserved[11]</structfield></entry>
- <entry>Reserved for future extensions. Should be zeroed by the
- application.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-</section>
-
- <section>
- <title>Standard Image Formats</title>
-
- <para>In order to exchange images between drivers and
-applications, it is necessary to have standard image data formats
-which both sides will interpret the same way. V4L2 includes several
-such formats, and this section is intended to be an unambiguous
-specification of the standard image data formats in V4L2.</para>
-
- <para>V4L2 drivers are not limited to these formats, however.
-Driver-specific formats are possible. In that case the application may
-depend on a codec to convert images to one of the standard formats
-when needed. But the data can still be stored and retrieved in the
-proprietary format. For example, a device may support a proprietary
-compressed format. Applications can still capture and save the data in
-the compressed format, saving much disk space, and later use a codec
-to convert the images to the X Windows screen format when the video is
-to be displayed.</para>
-
- <para>Even so, ultimately, some standard formats are needed, so
-the V4L2 specification would not be complete without well-defined
-standard formats.</para>
-
- <para>The V4L2 standard formats are mainly uncompressed formats. The
-pixels are always arranged in memory from left to right, and from top
-to bottom. The first byte of data in the image buffer is always for
-the leftmost pixel of the topmost row. Following that is the pixel
-immediately to its right, and so on until the end of the top row of
-pixels. Following the rightmost pixel of the row there may be zero or
-more bytes of padding to guarantee that each row of pixel data has a
-certain alignment. Following the pad bytes, if any, is data for the
-leftmost pixel of the second row from the top, and so on. The last row
-has just as many pad bytes after it as the other rows.</para>
-
- <para>In V4L2 each format has an identifier which looks like
-<constant>PIX_FMT_XXX</constant>, defined in the <link
-linkend="videodev">videodev.h</link> header file. These identifiers
-represent <link linkend="v4l2-fourcc">four character (FourCC) codes</link>
-which are also listed below, however they are not the same as those
-used in the Windows world.</para>
-
- <para>For some formats, data is stored in separate, discontiguous
-memory buffers. Those formats are identified by a separate set of FourCC codes
-and are referred to as "multi-planar formats". For example, a YUV422 frame is
-normally stored in one memory buffer, but it can also be placed in two or three
-separate buffers, with Y component in one buffer and CbCr components in another
-in the 2-planar version or with each component in its own buffer in the
-3-planar case. Those sub-buffers are referred to as "planes".</para>
- </section>
-
- <section id="colorspaces">
- <title>Colorspaces</title>
-
- <para>[intro]</para>
-
- <!-- See proposal by Billy Biggs, video4linux-list@redhat.com
-on 11 Oct 2002, subject: "Re: [V4L] Re: v4l2 api", and
-http://vektor.theorem.ca/graphics/ycbcr/ and
-http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html -->
-
- <para>
- <variablelist>
- <varlistentry>
- <term>Gamma Correction</term>
- <listitem>
- <para>[to do]</para>
- <para>E'<subscript>R</subscript> = f(R)</para>
- <para>E'<subscript>G</subscript> = f(G)</para>
- <para>E'<subscript>B</subscript> = f(B)</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>Construction of luminance and color-difference
-signals</term>
- <listitem>
- <para>[to do]</para>
- <para>E'<subscript>Y</subscript> =
-Coeff<subscript>R</subscript> E'<subscript>R</subscript>
-+ Coeff<subscript>G</subscript> E'<subscript>G</subscript>
-+ Coeff<subscript>B</subscript> E'<subscript>B</subscript></para>
- <para>(E'<subscript>R</subscript> - E'<subscript>Y</subscript>) = E'<subscript>R</subscript>
-- Coeff<subscript>R</subscript> E'<subscript>R</subscript>
-- Coeff<subscript>G</subscript> E'<subscript>G</subscript>
-- Coeff<subscript>B</subscript> E'<subscript>B</subscript></para>
- <para>(E'<subscript>B</subscript> - E'<subscript>Y</subscript>) = E'<subscript>B</subscript>
-- Coeff<subscript>R</subscript> E'<subscript>R</subscript>
-- Coeff<subscript>G</subscript> E'<subscript>G</subscript>
-- Coeff<subscript>B</subscript> E'<subscript>B</subscript></para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>Re-normalized color-difference signals</term>
- <listitem>
- <para>The color-difference signals are scaled back to unity
-range [-0.5;+0.5]:</para>
- <para>K<subscript>B</subscript> = 0.5 / (1 - Coeff<subscript>B</subscript>)</para>
- <para>K<subscript>R</subscript> = 0.5 / (1 - Coeff<subscript>R</subscript>)</para>
- <para>P<subscript>B</subscript> =
-K<subscript>B</subscript> (E'<subscript>B</subscript> - E'<subscript>Y</subscript>) =
- 0.5 (Coeff<subscript>R</subscript> / Coeff<subscript>B</subscript>) E'<subscript>R</subscript>
-+ 0.5 (Coeff<subscript>G</subscript> / Coeff<subscript>B</subscript>) E'<subscript>G</subscript>
-+ 0.5 E'<subscript>B</subscript></para>
- <para>P<subscript>R</subscript> =
-K<subscript>R</subscript> (E'<subscript>R</subscript> - E'<subscript>Y</subscript>) =
- 0.5 E'<subscript>R</subscript>
-+ 0.5 (Coeff<subscript>G</subscript> / Coeff<subscript>R</subscript>) E'<subscript>G</subscript>
-+ 0.5 (Coeff<subscript>B</subscript> / Coeff<subscript>R</subscript>) E'<subscript>B</subscript></para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>Quantization</term>
- <listitem>
- <para>[to do]</para>
- <para>Y' = (Lum. Levels - 1) · E'<subscript>Y</subscript> + Lum. Offset</para>
- <para>C<subscript>B</subscript> = (Chrom. Levels - 1)
-· P<subscript>B</subscript> + Chrom. Offset</para>
- <para>C<subscript>R</subscript> = (Chrom. Levels - 1)
-· P<subscript>R</subscript> + Chrom. Offset</para>
- <para>Rounding to the nearest integer and clamping to the range
-[0;255] finally yields the digital color components Y'CbCr
-stored in YUV images.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </para>
-
- <example>
- <title>ITU-R Rec. BT.601 color conversion</title>
-
- <para>Forward Transformation</para>
-
- <programlisting>
-int ER, EG, EB; /* gamma corrected RGB input [0;255] */
-int Y1, Cb, Cr; /* output [0;255] */
-
-double r, g, b; /* temporaries */
-double y1, pb, pr;
-
-int
-clamp (double x)
-{
- int r = x; /* round to nearest */
-
- if (r < 0) return 0;
- else if (r > 255) return 255;
- else return r;
-}
-
-r = ER / 255.0;
-g = EG / 255.0;
-b = EB / 255.0;
-
-y1 = 0.299 * r + 0.587 * g + 0.114 * b;
-pb = -0.169 * r - 0.331 * g + 0.5 * b;
-pr = 0.5 * r - 0.419 * g - 0.081 * b;
-
-Y1 = clamp (219 * y1 + 16);
-Cb = clamp (224 * pb + 128);
-Cr = clamp (224 * pr + 128);
-
-/* or shorter */
-
-y1 = 0.299 * ER + 0.587 * EG + 0.114 * EB;
-
-Y1 = clamp ( (219 / 255.0) * y1 + 16);
-Cb = clamp (((224 / 255.0) / (2 - 2 * 0.114)) * (EB - y1) + 128);
-Cr = clamp (((224 / 255.0) / (2 - 2 * 0.299)) * (ER - y1) + 128);
- </programlisting>
-
- <para>Inverse Transformation</para>
-
- <programlisting>
-int Y1, Cb, Cr; /* gamma pre-corrected input [0;255] */
-int ER, EG, EB; /* output [0;255] */
-
-double r, g, b; /* temporaries */
-double y1, pb, pr;
-
-int
-clamp (double x)
-{
- int r = x; /* round to nearest */
-
- if (r < 0) return 0;
- else if (r > 255) return 255;
- else return r;
-}
-
-y1 = (255 / 219.0) * (Y1 - 16);
-pb = (255 / 224.0) * (Cb - 128);
-pr = (255 / 224.0) * (Cr - 128);
-
-r = 1.0 * y1 + 0 * pb + 1.402 * pr;
-g = 1.0 * y1 - 0.344 * pb - 0.714 * pr;
-b = 1.0 * y1 + 1.772 * pb + 0 * pr;
-
-ER = clamp (r * 255); /* [ok? one should prob. limit y1,pb,pr] */
-EG = clamp (g * 255);
-EB = clamp (b * 255);
- </programlisting>
- </example>
-
- <table pgwide="1" id="v4l2-colorspace" orient="land">
- <title>enum v4l2_colorspace</title>
- <tgroup cols="11" align="center">
- <colspec align="left" />
- <colspec align="center" />
- <colspec align="left" />
- <colspec colname="cr" />
- <colspec colname="cg" />
- <colspec colname="cb" />
- <colspec colname="wp" />
- <colspec colname="gc" />
- <colspec colname="lum" />
- <colspec colname="qy" />
- <colspec colname="qc" />
- <spanspec namest="cr" nameend="cb" spanname="chrom" />
- <spanspec namest="qy" nameend="qc" spanname="quant" />
- <spanspec namest="lum" nameend="qc" spanname="spam" />
- <thead>
- <row>
- <entry morerows="1">Identifier</entry>
- <entry morerows="1">Value</entry>
- <entry morerows="1">Description</entry>
- <entry spanname="chrom">Chromaticities<footnote>
- <para>The coordinates of the color primaries are
-given in the CIE system (1931)</para>
- </footnote></entry>
- <entry morerows="1">White Point</entry>
- <entry morerows="1">Gamma Correction</entry>
- <entry morerows="1">Luminance E'<subscript>Y</subscript></entry>
- <entry spanname="quant">Quantization</entry>
- </row>
- <row>
- <entry>Red</entry>
- <entry>Green</entry>
- <entry>Blue</entry>
- <entry>Y'</entry>
- <entry>Cb, Cr</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_COLORSPACE_SMPTE170M</constant></entry>
- <entry>1</entry>
- <entry>NTSC/PAL according to <xref linkend="smpte170m" />,
-<xref linkend="itu601" /></entry>
- <entry>x = 0.630, y = 0.340</entry>
- <entry>x = 0.310, y = 0.595</entry>
- <entry>x = 0.155, y = 0.070</entry>
- <entry>x = 0.3127, y = 0.3290,
- Illuminant D<subscript>65</subscript></entry>
- <entry>E' = 4.5 I for I ≤0.018,
-1.099 I<superscript>0.45</superscript> - 0.099 for 0.018 < I</entry>
- <entry>0.299 E'<subscript>R</subscript>
-+ 0.587 E'<subscript>G</subscript>
-+ 0.114 E'<subscript>B</subscript></entry>
- <entry>219 E'<subscript>Y</subscript> + 16</entry>
- <entry>224 P<subscript>B,R</subscript> + 128</entry>
- </row>
- <row>
- <entry><constant>V4L2_COLORSPACE_SMPTE240M</constant></entry>
- <entry>2</entry>
- <entry>1125-Line (US) HDTV, see <xref
-linkend="smpte240m" /></entry>
- <entry>x = 0.630, y = 0.340</entry>
- <entry>x = 0.310, y = 0.595</entry>
- <entry>x = 0.155, y = 0.070</entry>
- <entry>x = 0.3127, y = 0.3290,
- Illuminant D<subscript>65</subscript></entry>
- <entry>E' = 4 I for I ≤0.0228,
-1.1115 I<superscript>0.45</superscript> - 0.1115 for 0.0228 < I</entry>
- <entry>0.212 E'<subscript>R</subscript>
-+ 0.701 E'<subscript>G</subscript>
-+ 0.087 E'<subscript>B</subscript></entry>
- <entry>219 E'<subscript>Y</subscript> + 16</entry>
- <entry>224 P<subscript>B,R</subscript> + 128</entry>
- </row>
- <row>
- <entry><constant>V4L2_COLORSPACE_REC709</constant></entry>
- <entry>3</entry>
- <entry>HDTV and modern devices, see <xref
-linkend="itu709" /></entry>
- <entry>x = 0.640, y = 0.330</entry>
- <entry>x = 0.300, y = 0.600</entry>
- <entry>x = 0.150, y = 0.060</entry>
- <entry>x = 0.3127, y = 0.3290,
- Illuminant D<subscript>65</subscript></entry>
- <entry>E' = 4.5 I for I ≤0.018,
-1.099 I<superscript>0.45</superscript> - 0.099 for 0.018 < I</entry>
- <entry>0.2125 E'<subscript>R</subscript>
-+ 0.7154 E'<subscript>G</subscript>
-+ 0.0721 E'<subscript>B</subscript></entry>
- <entry>219 E'<subscript>Y</subscript> + 16</entry>
- <entry>224 P<subscript>B,R</subscript> + 128</entry>
- </row>
- <row>
- <entry><constant>V4L2_COLORSPACE_BT878</constant></entry>
- <entry>4</entry>
- <entry>Broken Bt878 extents<footnote>
- <para>The ubiquitous Bt878 video capture chip
-quantizes E'<subscript>Y</subscript> to 238 levels, yielding a range
-of Y' = 16 … 253, unlike Rec. 601 Y' = 16 …
-235. This is not a typo in the Bt878 documentation, it has been
-implemented in silicon. The chroma extents are unclear.</para>
- </footnote>, <xref linkend="itu601" /></entry>
- <entry>?</entry>
- <entry>?</entry>
- <entry>?</entry>
- <entry>?</entry>
- <entry>?</entry>
- <entry>0.299 E'<subscript>R</subscript>
-+ 0.587 E'<subscript>G</subscript>
-+ 0.114 E'<subscript>B</subscript></entry>
- <entry><emphasis>237</emphasis> E'<subscript>Y</subscript> + 16</entry>
- <entry>224 P<subscript>B,R</subscript> + 128 (probably)</entry>
- </row>
- <row>
- <entry><constant>V4L2_COLORSPACE_470_SYSTEM_M</constant></entry>
- <entry>5</entry>
- <entry>M/NTSC<footnote>
- <para>No identifier exists for M/PAL which uses
-the chromaticities of M/NTSC, the remaining parameters are equal to B and
-G/PAL.</para>
- </footnote> according to <xref linkend="itu470" />, <xref
- linkend="itu601" /></entry>
- <entry>x = 0.67, y = 0.33</entry>
- <entry>x = 0.21, y = 0.71</entry>
- <entry>x = 0.14, y = 0.08</entry>
- <entry>x = 0.310, y = 0.316, Illuminant C</entry>
- <entry>?</entry>
- <entry>0.299 E'<subscript>R</subscript>
-+ 0.587 E'<subscript>G</subscript>
-+ 0.114 E'<subscript>B</subscript></entry>
- <entry>219 E'<subscript>Y</subscript> + 16</entry>
- <entry>224 P<subscript>B,R</subscript> + 128</entry>
- </row>
- <row>
- <entry><constant>V4L2_COLORSPACE_470_SYSTEM_BG</constant></entry>
- <entry>6</entry>
- <entry>625-line PAL and SECAM systems according to <xref
-linkend="itu470" />, <xref linkend="itu601" /></entry>
- <entry>x = 0.64, y = 0.33</entry>
- <entry>x = 0.29, y = 0.60</entry>
- <entry>x = 0.15, y = 0.06</entry>
- <entry>x = 0.313, y = 0.329,
-Illuminant D<subscript>65</subscript></entry>
- <entry>?</entry>
- <entry>0.299 E'<subscript>R</subscript>
-+ 0.587 E'<subscript>G</subscript>
-+ 0.114 E'<subscript>B</subscript></entry>
- <entry>219 E'<subscript>Y</subscript> + 16</entry>
- <entry>224 P<subscript>B,R</subscript> + 128</entry>
- </row>
- <row>
- <entry><constant>V4L2_COLORSPACE_JPEG</constant></entry>
- <entry>7</entry>
- <entry>JPEG Y'CbCr, see <xref linkend="jfif" />, <xref linkend="itu601" /></entry>
- <entry>?</entry>
- <entry>?</entry>
- <entry>?</entry>
- <entry>?</entry>
- <entry>?</entry>
- <entry>0.299 E'<subscript>R</subscript>
-+ 0.587 E'<subscript>G</subscript>
-+ 0.114 E'<subscript>B</subscript></entry>
- <entry>256 E'<subscript>Y</subscript> + 16<footnote>
- <para>Note JFIF quantizes
-Y'P<subscript>B</subscript>P<subscript>R</subscript> in range [0;+1] and
-[-0.5;+0.5] to <emphasis>257</emphasis> levels, however Y'CbCr signals
-are still clamped to [0;255].</para>
- </footnote></entry>
- <entry>256 P<subscript>B,R</subscript> + 128</entry>
- </row>
- <row>
- <entry><constant>V4L2_COLORSPACE_SRGB</constant></entry>
- <entry>8</entry>
- <entry>[?]</entry>
- <entry>x = 0.640, y = 0.330</entry>
- <entry>x = 0.300, y = 0.600</entry>
- <entry>x = 0.150, y = 0.060</entry>
- <entry>x = 0.3127, y = 0.3290,
- Illuminant D<subscript>65</subscript></entry>
- <entry>E' = 4.5 I for I ≤0.018,
-1.099 I<superscript>0.45</superscript> - 0.099 for 0.018 < I</entry>
- <entry spanname="spam">n/a</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </section>
-
- <section id="pixfmt-indexed">
- <title>Indexed Format</title>
-
- <para>In this format each pixel is represented by an 8 bit index
-into a 256 entry ARGB palette. It is intended for <link
-linkend="osd">Video Output Overlays</link> only. There are no ioctls to
-access the palette, this must be done with ioctls of the Linux framebuffer API.</para>
-
- <table pgwide="0" frame="none">
- <title>Indexed Image Format</title>
- <tgroup cols="37" align="center">
- <colspec colname="id" align="left" />
- <colspec colname="fourcc" />
- <colspec colname="bit" />
-
- <colspec colnum="4" colname="b07" align="center" />
- <colspec colnum="5" colname="b06" align="center" />
- <colspec colnum="6" colname="b05" align="center" />
- <colspec colnum="7" colname="b04" align="center" />
- <colspec colnum="8" colname="b03" align="center" />
- <colspec colnum="9" colname="b02" align="center" />
- <colspec colnum="10" colname="b01" align="center" />
- <colspec colnum="11" colname="b00" align="center" />
-
- <spanspec namest="b07" nameend="b00" spanname="b0" />
- <spanspec namest="b17" nameend="b10" spanname="b1" />
- <spanspec namest="b27" nameend="b20" spanname="b2" />
- <spanspec namest="b37" nameend="b30" spanname="b3" />
- <thead>
- <row>
- <entry>Identifier</entry>
- <entry>Code</entry>
- <entry> </entry>
- <entry spanname="b0">Byte 0</entry>
- </row>
- <row>
- <entry> </entry>
- <entry> </entry>
- <entry>Bit</entry>
- <entry>7</entry>
- <entry>6</entry>
- <entry>5</entry>
- <entry>4</entry>
- <entry>3</entry>
- <entry>2</entry>
- <entry>1</entry>
- <entry>0</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row id="V4L2-PIX-FMT-PAL8">
- <entry><constant>V4L2_PIX_FMT_PAL8</constant></entry>
- <entry>'PAL8'</entry>
- <entry></entry>
- <entry>i<subscript>7</subscript></entry>
- <entry>i<subscript>6</subscript></entry>
- <entry>i<subscript>5</subscript></entry>
- <entry>i<subscript>4</subscript></entry>
- <entry>i<subscript>3</subscript></entry>
- <entry>i<subscript>2</subscript></entry>
- <entry>i<subscript>1</subscript></entry>
- <entry>i<subscript>0</subscript></entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </section>
-
- <section id="pixfmt-rgb">
- <title>RGB Formats</title>
-
- &sub-packed-rgb;
- &sub-sbggr8;
- &sub-sgbrg8;
- &sub-sgrbg8;
- &sub-srggb8;
- &sub-sbggr16;
- &sub-srggb10;
- &sub-srggb12;
- </section>
-
- <section id="yuv-formats">
- <title>YUV Formats</title>
-
- <para>YUV is the format native to TV broadcast and composite video
-signals. It separates the brightness information (Y) from the color
-information (U and V or Cb and Cr). The color information consists of
-red and blue <emphasis>color difference</emphasis> signals, this way
-the green component can be reconstructed by subtracting from the
-brightness component. See <xref linkend="colorspaces" /> for conversion
-examples. YUV was chosen because early television would only transmit
-brightness information. To add color in a way compatible with existing
-receivers a new signal carrier was added to transmit the color
-difference signals. Secondary in the YUV format the U and V components
-usually have lower resolution than the Y component. This is an analog
-video compression technique taking advantage of a property of the
-human visual system, being more sensitive to brightness
-information.</para>
-
- &sub-packed-yuv;
- &sub-grey;
- &sub-y10;
- &sub-y12;
- &sub-y10b;
- &sub-y16;
- &sub-yuyv;
- &sub-uyvy;
- &sub-yvyu;
- &sub-vyuy;
- &sub-y41p;
- &sub-yuv420;
- &sub-yuv420m;
- &sub-yuv410;
- &sub-yuv422p;
- &sub-yuv411p;
- &sub-nv12;
- &sub-nv12m;
- &sub-nv12mt;
- &sub-nv16;
- &sub-m420;
- </section>
-
- <section>
- <title>Compressed Formats</title>
-
- <table pgwide="1" frame="none" id="compressed-formats">
- <title>Compressed Image Formats</title>
- <tgroup cols="3" align="left">
- &cs-def;
- <thead>
- <row>
- <entry>Identifier</entry>
- <entry>Code</entry>
- <entry>Details</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row id="V4L2-PIX-FMT-JPEG">
- <entry><constant>V4L2_PIX_FMT_JPEG</constant></entry>
- <entry>'JPEG'</entry>
- <entry>TBD. See also &VIDIOC-G-JPEGCOMP;,
- &VIDIOC-S-JPEGCOMP;.</entry>
- </row>
- <row id="V4L2-PIX-FMT-MPEG">
- <entry><constant>V4L2_PIX_FMT_MPEG</constant></entry>
- <entry>'MPEG'</entry>
- <entry>MPEG stream. The actual format is determined by
-extended control <constant>V4L2_CID_MPEG_STREAM_TYPE</constant>, see
-<xref linkend="mpeg-control-id" />.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </section>
-
- <section id="pixfmt-reserved">
- <title>Reserved Format Identifiers</title>
-
- <para>These formats are not defined by this specification, they
-are just listed for reference and to avoid naming conflicts. If you
-want to register your own format, send an e-mail to the linux-media mailing
-list &v4l-ml; for inclusion in the <filename>videodev2.h</filename>
-file. If you want to share your format with other developers add a
-link to your documentation and send a copy to the linux-media mailing list
-for inclusion in this section. If you think your format should be listed
-in a standard format section please make a proposal on the linux-media mailing
-list.</para>
-
- <table pgwide="1" frame="none" id="reserved-formats">
- <title>Reserved Image Formats</title>
- <tgroup cols="3" align="left">
- &cs-def;
- <thead>
- <row>
- <entry>Identifier</entry>
- <entry>Code</entry>
- <entry>Details</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row id="V4L2-PIX-FMT-DV">
- <entry><constant>V4L2_PIX_FMT_DV</constant></entry>
- <entry>'dvsd'</entry>
- <entry>unknown</entry>
- </row>
- <row id="V4L2-PIX-FMT-ET61X251">
- <entry><constant>V4L2_PIX_FMT_ET61X251</constant></entry>
- <entry>'E625'</entry>
- <entry>Compressed format of the ET61X251 driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-HI240">
- <entry><constant>V4L2_PIX_FMT_HI240</constant></entry>
- <entry>'HI24'</entry>
- <entry><para>8 bit RGB format used by the BTTV driver.</para></entry>
- </row>
- <row id="V4L2-PIX-FMT-HM12">
- <entry><constant>V4L2_PIX_FMT_HM12</constant></entry>
- <entry>'HM12'</entry>
- <entry><para>YUV 4:2:0 format used by the
-IVTV driver, <ulink url="http://www.ivtvdriver.org/">
-http://www.ivtvdriver.org/</ulink></para><para>The format is documented in the
-kernel sources in the file <filename>Documentation/video4linux/cx2341x/README.hm12</filename>
-</para></entry>
- </row>
- <row id="V4L2-PIX-FMT-CPIA1">
- <entry><constant>V4L2_PIX_FMT_CPIA1</constant></entry>
- <entry>'CPIA'</entry>
- <entry>YUV format used by the gspca cpia1 driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-SPCA501">
- <entry><constant>V4L2_PIX_FMT_SPCA501</constant></entry>
- <entry>'S501'</entry>
- <entry>YUYV per line used by the gspca driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-SPCA505">
- <entry><constant>V4L2_PIX_FMT_SPCA505</constant></entry>
- <entry>'S505'</entry>
- <entry>YYUV per line used by the gspca driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-SPCA508">
- <entry><constant>V4L2_PIX_FMT_SPCA508</constant></entry>
- <entry>'S508'</entry>
- <entry>YUVY per line used by the gspca driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-SPCA561">
- <entry><constant>V4L2_PIX_FMT_SPCA561</constant></entry>
- <entry>'S561'</entry>
- <entry>Compressed GBRG Bayer format used by the gspca driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-SGRBG10DPCM8">
- <entry><constant>V4L2_PIX_FMT_SGRBG10DPCM8</constant></entry>
- <entry>'DB10'</entry>
- <entry>10 bit raw Bayer DPCM compressed to 8 bits.</entry>
- </row>
- <row id="V4L2-PIX-FMT-PAC207">
- <entry><constant>V4L2_PIX_FMT_PAC207</constant></entry>
- <entry>'P207'</entry>
- <entry>Compressed BGGR Bayer format used by the gspca driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-MR97310A">
- <entry><constant>V4L2_PIX_FMT_MR97310A</constant></entry>
- <entry>'M310'</entry>
- <entry>Compressed BGGR Bayer format used by the gspca driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-OV511">
- <entry><constant>V4L2_PIX_FMT_OV511</constant></entry>
- <entry>'O511'</entry>
- <entry>OV511 JPEG format used by the gspca driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-OV518">
- <entry><constant>V4L2_PIX_FMT_OV518</constant></entry>
- <entry>'O518'</entry>
- <entry>OV518 JPEG format used by the gspca driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-PJPG">
- <entry><constant>V4L2_PIX_FMT_PJPG</constant></entry>
- <entry>'PJPG'</entry>
- <entry>Pixart 73xx JPEG format used by the gspca driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-SQ905C">
- <entry><constant>V4L2_PIX_FMT_SQ905C</constant></entry>
- <entry>'905C'</entry>
- <entry>Compressed RGGB bayer format used by the gspca driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-MJPEG">
- <entry><constant>V4L2_PIX_FMT_MJPEG</constant></entry>
- <entry>'MJPG'</entry>
- <entry>Compressed format used by the Zoran driver</entry>
- </row>
- <row id="V4L2-PIX-FMT-PWC1">
- <entry><constant>V4L2_PIX_FMT_PWC1</constant></entry>
- <entry>'PWC1'</entry>
- <entry>Compressed format of the PWC driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-PWC2">
- <entry><constant>V4L2_PIX_FMT_PWC2</constant></entry>
- <entry>'PWC2'</entry>
- <entry>Compressed format of the PWC driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-SN9C10X">
- <entry><constant>V4L2_PIX_FMT_SN9C10X</constant></entry>
- <entry>'S910'</entry>
- <entry>Compressed format of the SN9C102 driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-SN9C20X-I420">
- <entry><constant>V4L2_PIX_FMT_SN9C20X_I420</constant></entry>
- <entry>'S920'</entry>
- <entry>YUV 4:2:0 format of the gspca sn9c20x driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-SN9C2028">
- <entry><constant>V4L2_PIX_FMT_SN9C2028</constant></entry>
- <entry>'SONX'</entry>
- <entry>Compressed GBRG bayer format of the gspca sn9c2028 driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-STV0680">
- <entry><constant>V4L2_PIX_FMT_STV0680</constant></entry>
- <entry>'S680'</entry>
- <entry>Bayer format of the gspca stv0680 driver.</entry>
- </row>
- <row id="V4L2-PIX-FMT-WNVA">
- <entry><constant>V4L2_PIX_FMT_WNVA</constant></entry>
- <entry>'WNVA'</entry>
- <entry><para>Used by the Winnov Videum driver, <ulink
-url="http://www.thedirks.org/winnov/">
-http://www.thedirks.org/winnov/</ulink></para></entry>
- </row>
- <row id="V4L2-PIX-FMT-TM6000">
- <entry><constant>V4L2_PIX_FMT_TM6000</constant></entry>
- <entry>'TM60'</entry>
- <entry><para>Used by Trident tm6000</para></entry>
- </row>
- <row id="V4L2-PIX-FMT-CIT-YYVYUY">
- <entry><constant>V4L2_PIX_FMT_CIT_YYVYUY</constant></entry>
- <entry>'CITV'</entry>
- <entry><para>Used by xirlink CIT, found at IBM webcams.</para>
- <para>Uses one line of Y then 1 line of VYUY</para>
- </entry>
- </row>
- <row id="V4L2-PIX-FMT-KONICA420">
- <entry><constant>V4L2_PIX_FMT_KONICA420</constant></entry>
- <entry>'KONI'</entry>
- <entry><para>Used by Konica webcams.</para>
- <para>YUV420 planar in blocks of 256 pixels.</para>
- </entry>
- </row>
- <row id="V4L2-PIX-FMT-YYUV">
- <entry><constant>V4L2_PIX_FMT_YYUV</constant></entry>
- <entry>'YYUV'</entry>
- <entry>unknown</entry>
- </row>
- <row id="V4L2-PIX-FMT-Y4">
- <entry><constant>V4L2_PIX_FMT_Y4</constant></entry>
- <entry>'Y04 '</entry>
- <entry>Old 4-bit greyscale format. Only the least significant 4 bits of each byte are used,
-the other bits are set to 0.</entry>
- </row>
- <row id="V4L2-PIX-FMT-Y6">
- <entry><constant>V4L2_PIX_FMT_Y6</constant></entry>
- <entry>'Y06 '</entry>
- <entry>Old 6-bit greyscale format. Only the least significant 6 bits of each byte are used,
-the other bits are set to 0.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </section>
-
- <!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
- -->
diff --git a/Documentation/DocBook/v4l/subdev-formats.xml b/Documentation/DocBook/v4l/subdev-formats.xml
deleted file mode 100644
index 8d3409d..0000000
--- a/Documentation/DocBook/v4l/subdev-formats.xml
+++ /dev/null
@@ -1,2572 +0,0 @@
-<section id="v4l2-mbus-format">
- <title>Media Bus Formats</title>
-
- <table pgwide="1" frame="none" id="v4l2-mbus-framefmt">
- <title>struct <structname>v4l2_mbus_framefmt</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>width</structfield></entry>
- <entry>Image width, in pixels.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>height</structfield></entry>
- <entry>Image height, in pixels.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>code</structfield></entry>
- <entry>Format code, from &v4l2-mbus-pixelcode;.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>field</structfield></entry>
- <entry>Field order, from &v4l2-field;. See
- <xref linkend="field-order" /> for details.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>colorspace</structfield></entry>
- <entry>Image colorspace, from &v4l2-colorspace;. See
- <xref linkend="colorspaces" /> for details.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[7]</entry>
- <entry>Reserved for future extensions. Applications and drivers must
- set the array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <section id="v4l2-mbus-pixelcode">
- <title>Media Bus Pixel Codes</title>
-
- <para>The media bus pixel codes describe image formats as flowing over
- physical busses (both between separate physical components and inside SoC
- devices). This should not be confused with the V4L2 pixel formats that
- describe, using four character codes, image formats as stored in memory.
- </para>
-
- <para>While there is a relationship between image formats on busses and
- image formats in memory (a raw Bayer image won't be magically converted to
- JPEG just by storing it to memory), there is no one-to-one correspondance
- between them.</para>
-
- <section>
- <title>Packed RGB Formats</title>
-
- <para>Those formats transfer pixel data as red, green and blue components.
- The format code is made of the following information.
- <itemizedlist>
- <listitem><para>The red, green and blue components order code, as encoded in a
- pixel sample. Possible values are RGB and BGR.</para></listitem>
- <listitem><para>The number of bits per component, for each component. The values
- can be different for all components. Common values are 555 and 565.</para>
- </listitem>
- <listitem><para>The number of bus samples per pixel. Pixels that are wider than
- the bus width must be transferred in multiple samples. Common values are
- 1 and 2.</para></listitem>
- <listitem><para>The bus width.</para></listitem>
- <listitem><para>For formats where the total number of bits per pixel is smaller
- than the number of bus samples per pixel times the bus width, a padding
- value stating if the bytes are padded in their most high order bits
- (PADHI) or low order bits (PADLO).</para></listitem>
- <listitem><para>For formats where the number of bus samples per pixel is larger
- than 1, an endianness value stating if the pixel is transferred MSB first
- (BE) or LSB first (LE).</para></listitem>
- </itemizedlist>
- </para>
-
- <para>For instance, a format where pixels are encoded as 5-bits red, 5-bits
- green and 5-bit blue values padded on the high bit, transferred as 2 8-bit
- samples per pixel with the most significant bits (padding, red and half of
- the green value) transferred first will be named
- <constant>V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE</constant>.
- </para>
-
- <para>The following tables list existing packet RGB formats.</para>
-
- <table pgwide="0" frame="none" id="v4l2-mbus-pixelcode-rgb">
- <title>RGB formats</title>
- <tgroup cols="11">
- <colspec colname="id" align="left" />
- <colspec colname="code" align="center"/>
- <colspec colname="bit" />
- <colspec colnum="4" colname="b07" align="center" />
- <colspec colnum="5" colname="b06" align="center" />
- <colspec colnum="6" colname="b05" align="center" />
- <colspec colnum="7" colname="b04" align="center" />
- <colspec colnum="8" colname="b03" align="center" />
- <colspec colnum="9" colname="b02" align="center" />
- <colspec colnum="10" colname="b01" align="center" />
- <colspec colnum="11" colname="b00" align="center" />
- <spanspec namest="b07" nameend="b00" spanname="b0" />
- <thead>
- <row>
- <entry>Identifier</entry>
- <entry>Code</entry>
- <entry></entry>
- <entry spanname="b0">Data organization</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry>Bit</entry>
- <entry>7</entry>
- <entry>6</entry>
- <entry>5</entry>
- <entry>4</entry>
- <entry>3</entry>
- <entry>2</entry>
- <entry>1</entry>
- <entry>0</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row id="V4L2-MBUS-FMT-RGB444-2X8-PADHI-BE">
- <entry>V4L2_MBUS_FMT_RGB444_2X8_PADHI_BE</entry>
- <entry>0x1001</entry>
- <entry></entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>r<subscript>3</subscript></entry>
- <entry>r<subscript>2</subscript></entry>
- <entry>r<subscript>1</subscript></entry>
- <entry>r<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>g<subscript>3</subscript></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-RGB444-2X8-PADHI-LE">
- <entry>V4L2_MBUS_FMT_RGB444_2X8_PADHI_LE</entry>
- <entry>0x1002</entry>
- <entry></entry>
- <entry>g<subscript>3</subscript></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>r<subscript>3</subscript></entry>
- <entry>r<subscript>2</subscript></entry>
- <entry>r<subscript>1</subscript></entry>
- <entry>r<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-RGB555-2X8-PADHI-BE">
- <entry>V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE</entry>
- <entry>0x1003</entry>
- <entry></entry>
- <entry>0</entry>
- <entry>r<subscript>4</subscript></entry>
- <entry>r<subscript>3</subscript></entry>
- <entry>r<subscript>2</subscript></entry>
- <entry>r<subscript>1</subscript></entry>
- <entry>r<subscript>0</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-RGB555-2X8-PADHI-LE">
- <entry>V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE</entry>
- <entry>0x1004</entry>
- <entry></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>0</entry>
- <entry>r<subscript>4</subscript></entry>
- <entry>r<subscript>3</subscript></entry>
- <entry>r<subscript>2</subscript></entry>
- <entry>r<subscript>1</subscript></entry>
- <entry>r<subscript>0</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-BGR565-2X8-BE">
- <entry>V4L2_MBUS_FMT_BGR565_2X8_BE</entry>
- <entry>0x1005</entry>
- <entry></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- <entry>g<subscript>5</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- <entry>r<subscript>4</subscript></entry>
- <entry>r<subscript>3</subscript></entry>
- <entry>r<subscript>2</subscript></entry>
- <entry>r<subscript>1</subscript></entry>
- <entry>r<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-BGR565-2X8-LE">
- <entry>V4L2_MBUS_FMT_BGR565_2X8_LE</entry>
- <entry>0x1006</entry>
- <entry></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- <entry>r<subscript>4</subscript></entry>
- <entry>r<subscript>3</subscript></entry>
- <entry>r<subscript>2</subscript></entry>
- <entry>r<subscript>1</subscript></entry>
- <entry>r<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- <entry>g<subscript>5</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-RGB565-2X8-BE">
- <entry>V4L2_MBUS_FMT_RGB565_2X8_BE</entry>
- <entry>0x1007</entry>
- <entry></entry>
- <entry>r<subscript>4</subscript></entry>
- <entry>r<subscript>3</subscript></entry>
- <entry>r<subscript>2</subscript></entry>
- <entry>r<subscript>1</subscript></entry>
- <entry>r<subscript>0</subscript></entry>
- <entry>g<subscript>5</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-RGB565-2X8-LE">
- <entry>V4L2_MBUS_FMT_RGB565_2X8_LE</entry>
- <entry>0x1008</entry>
- <entry></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>r<subscript>4</subscript></entry>
- <entry>r<subscript>3</subscript></entry>
- <entry>r<subscript>2</subscript></entry>
- <entry>r<subscript>1</subscript></entry>
- <entry>r<subscript>0</subscript></entry>
- <entry>g<subscript>5</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </section>
-
- <section>
- <title>Bayer Formats</title>
-
- <para>Those formats transfer pixel data as red, green and blue components.
- The format code is made of the following information.
- <itemizedlist>
- <listitem><para>The red, green and blue components order code, as encoded in a
- pixel sample. The possible values are shown in <xref
- linkend="bayer-patterns" />.</para></listitem>
- <listitem><para>The number of bits per pixel component. All components are
- transferred on the same number of bits. Common values are 8, 10 and 12.</para>
- </listitem>
- <listitem><para>If the pixel components are DPCM-compressed, a mention of the
- DPCM compression and the number of bits per compressed pixel component.</para>
- </listitem>
- <listitem><para>The number of bus samples per pixel. Pixels that are wider than
- the bus width must be transferred in multiple samples. Common values are
- 1 and 2.</para></listitem>
- <listitem><para>The bus width.</para></listitem>
- <listitem><para>For formats where the total number of bits per pixel is smaller
- than the number of bus samples per pixel times the bus width, a padding
- value stating if the bytes are padded in their most high order bits
- (PADHI) or low order bits (PADLO).</para></listitem>
- <listitem><para>For formats where the number of bus samples per pixel is larger
- than 1, an endianness value stating if the pixel is transferred MSB first
- (BE) or LSB first (LE).</para></listitem>
- </itemizedlist>
- </para>
-
- <para>For instance, a format with uncompressed 10-bit Bayer components
- arranged in a red, green, green, blue pattern transferred as 2 8-bit
- samples per pixel with the least significant bits transferred first will
- be named <constant>V4L2_MBUS_FMT_SRGGB10_2X8_PADHI_LE</constant>.
- </para>
-
- <figure id="bayer-patterns">
- <title>Bayer Patterns</title>
- <mediaobject>
- <imageobject>
- <imagedata fileref="bayer.pdf" format="PS" />
- </imageobject>
- <imageobject>
- <imagedata fileref="bayer.png" format="PNG" />
- </imageobject>
- <textobject>
- <phrase>Bayer filter color patterns</phrase>
- </textobject>
- </mediaobject>
- </figure>
-
- <para>The following table lists existing packet Bayer formats. The data
- organization is given as an example for the first pixel only.</para>
-
- <table pgwide="0" frame="none" id="v4l2-mbus-pixelcode-bayer">
- <title>Bayer Formats</title>
- <tgroup cols="15">
- <colspec colname="id" align="left" />
- <colspec colname="code" align="center"/>
- <colspec colname="bit" />
- <colspec colnum="4" colname="b11" align="center" />
- <colspec colnum="5" colname="b10" align="center" />
- <colspec colnum="6" colname="b09" align="center" />
- <colspec colnum="7" colname="b08" align="center" />
- <colspec colnum="8" colname="b07" align="center" />
- <colspec colnum="9" colname="b06" align="center" />
- <colspec colnum="10" colname="b05" align="center" />
- <colspec colnum="11" colname="b04" align="center" />
- <colspec colnum="12" colname="b03" align="center" />
- <colspec colnum="13" colname="b02" align="center" />
- <colspec colnum="14" colname="b01" align="center" />
- <colspec colnum="15" colname="b00" align="center" />
- <spanspec namest="b11" nameend="b00" spanname="b0" />
- <thead>
- <row>
- <entry>Identifier</entry>
- <entry>Code</entry>
- <entry></entry>
- <entry spanname="b0">Data organization</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry>Bit</entry>
- <entry>11</entry>
- <entry>10</entry>
- <entry>9</entry>
- <entry>8</entry>
- <entry>7</entry>
- <entry>6</entry>
- <entry>5</entry>
- <entry>4</entry>
- <entry>3</entry>
- <entry>2</entry>
- <entry>1</entry>
- <entry>0</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row id="V4L2-MBUS-FMT-SBGGR8-1X8">
- <entry>V4L2_MBUS_FMT_SBGGR8_1X8</entry>
- <entry>0x3001</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>b<subscript>7</subscript></entry>
- <entry>b<subscript>6</subscript></entry>
- <entry>b<subscript>5</subscript></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SGBRG8-1X8">
- <entry>V4L2_MBUS_FMT_SGBRG8_1X8</entry>
- <entry>0x3013</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>g<subscript>7</subscript></entry>
- <entry>g<subscript>6</subscript></entry>
- <entry>g<subscript>5</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SGRBG8-1X8">
- <entry>V4L2_MBUS_FMT_SGRBG8_1X8</entry>
- <entry>0x3002</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>g<subscript>7</subscript></entry>
- <entry>g<subscript>6</subscript></entry>
- <entry>g<subscript>5</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SRGGB8-1X8">
- <entry>V4L2_MBUS_FMT_SRGGB8_1X8</entry>
- <entry>0x3014</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>r<subscript>7</subscript></entry>
- <entry>r<subscript>6</subscript></entry>
- <entry>r<subscript>5</subscript></entry>
- <entry>r<subscript>4</subscript></entry>
- <entry>r<subscript>3</subscript></entry>
- <entry>r<subscript>2</subscript></entry>
- <entry>r<subscript>1</subscript></entry>
- <entry>r<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SBGGR10-DPCM8-1X8">
- <entry>V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8</entry>
- <entry>0x300b</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>b<subscript>7</subscript></entry>
- <entry>b<subscript>6</subscript></entry>
- <entry>b<subscript>5</subscript></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SGBRG10-DPCM8-1X8">
- <entry>V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8</entry>
- <entry>0x300c</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>g<subscript>7</subscript></entry>
- <entry>g<subscript>6</subscript></entry>
- <entry>g<subscript>5</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SGRBG10-DPCM8-1X8">
- <entry>V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8</entry>
- <entry>0x3009</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>g<subscript>7</subscript></entry>
- <entry>g<subscript>6</subscript></entry>
- <entry>g<subscript>5</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SRGGB10-DPCM8-1X8">
- <entry>V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8</entry>
- <entry>0x300d</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>r<subscript>7</subscript></entry>
- <entry>r<subscript>6</subscript></entry>
- <entry>r<subscript>5</subscript></entry>
- <entry>r<subscript>4</subscript></entry>
- <entry>r<subscript>3</subscript></entry>
- <entry>r<subscript>2</subscript></entry>
- <entry>r<subscript>1</subscript></entry>
- <entry>r<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SBGGR10-2X8-PADHI-BE">
- <entry>V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE</entry>
- <entry>0x3003</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>b<subscript>9</subscript></entry>
- <entry>b<subscript>8</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>b<subscript>7</subscript></entry>
- <entry>b<subscript>6</subscript></entry>
- <entry>b<subscript>5</subscript></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SBGGR10-2X8-PADHI-LE">
- <entry>V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE</entry>
- <entry>0x3004</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>b<subscript>7</subscript></entry>
- <entry>b<subscript>6</subscript></entry>
- <entry>b<subscript>5</subscript></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>b<subscript>9</subscript></entry>
- <entry>b<subscript>8</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SBGGR10-2X8-PADLO-BE">
- <entry>V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE</entry>
- <entry>0x3005</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>b<subscript>9</subscript></entry>
- <entry>b<subscript>8</subscript></entry>
- <entry>b<subscript>7</subscript></entry>
- <entry>b<subscript>6</subscript></entry>
- <entry>b<subscript>5</subscript></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- </row>
- <row id="V4L2-MBUS-FMT-SBGGR10-2X8-PADLO-LE">
- <entry>V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE</entry>
- <entry>0x3006</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>b<subscript>9</subscript></entry>
- <entry>b<subscript>8</subscript></entry>
- <entry>b<subscript>7</subscript></entry>
- <entry>b<subscript>6</subscript></entry>
- <entry>b<subscript>5</subscript></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SBGGR10-1X10">
- <entry>V4L2_MBUS_FMT_SBGGR10_1X10</entry>
- <entry>0x3007</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>b<subscript>9</subscript></entry>
- <entry>b<subscript>8</subscript></entry>
- <entry>b<subscript>7</subscript></entry>
- <entry>b<subscript>6</subscript></entry>
- <entry>b<subscript>5</subscript></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SGBRG10-1X10">
- <entry>V4L2_MBUS_FMT_SGBRG10_1X10</entry>
- <entry>0x300e</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>g<subscript>9</subscript></entry>
- <entry>g<subscript>8</subscript></entry>
- <entry>g<subscript>7</subscript></entry>
- <entry>g<subscript>6</subscript></entry>
- <entry>g<subscript>5</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SGRBG10-1X10">
- <entry>V4L2_MBUS_FMT_SGRBG10_1X10</entry>
- <entry>0x300a</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>g<subscript>9</subscript></entry>
- <entry>g<subscript>8</subscript></entry>
- <entry>g<subscript>7</subscript></entry>
- <entry>g<subscript>6</subscript></entry>
- <entry>g<subscript>5</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SRGGB10-1X10">
- <entry>V4L2_MBUS_FMT_SRGGB10_1X10</entry>
- <entry>0x300f</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>r<subscript>9</subscript></entry>
- <entry>r<subscript>8</subscript></entry>
- <entry>r<subscript>7</subscript></entry>
- <entry>r<subscript>6</subscript></entry>
- <entry>r<subscript>5</subscript></entry>
- <entry>r<subscript>4</subscript></entry>
- <entry>r<subscript>3</subscript></entry>
- <entry>r<subscript>2</subscript></entry>
- <entry>r<subscript>1</subscript></entry>
- <entry>r<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SBGGR12-1X12">
- <entry>V4L2_MBUS_FMT_SBGGR12_1X12</entry>
- <entry>0x3008</entry>
- <entry></entry>
- <entry>b<subscript>11</subscript></entry>
- <entry>b<subscript>10</subscript></entry>
- <entry>b<subscript>9</subscript></entry>
- <entry>b<subscript>8</subscript></entry>
- <entry>b<subscript>7</subscript></entry>
- <entry>b<subscript>6</subscript></entry>
- <entry>b<subscript>5</subscript></entry>
- <entry>b<subscript>4</subscript></entry>
- <entry>b<subscript>3</subscript></entry>
- <entry>b<subscript>2</subscript></entry>
- <entry>b<subscript>1</subscript></entry>
- <entry>b<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SGBRG12-1X12">
- <entry>V4L2_MBUS_FMT_SGBRG12_1X12</entry>
- <entry>0x3010</entry>
- <entry></entry>
- <entry>g<subscript>11</subscript></entry>
- <entry>g<subscript>10</subscript></entry>
- <entry>g<subscript>9</subscript></entry>
- <entry>g<subscript>8</subscript></entry>
- <entry>g<subscript>7</subscript></entry>
- <entry>g<subscript>6</subscript></entry>
- <entry>g<subscript>5</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SGRBG12-1X12">
- <entry>V4L2_MBUS_FMT_SGRBG12_1X12</entry>
- <entry>0x3011</entry>
- <entry></entry>
- <entry>g<subscript>11</subscript></entry>
- <entry>g<subscript>10</subscript></entry>
- <entry>g<subscript>9</subscript></entry>
- <entry>g<subscript>8</subscript></entry>
- <entry>g<subscript>7</subscript></entry>
- <entry>g<subscript>6</subscript></entry>
- <entry>g<subscript>5</subscript></entry>
- <entry>g<subscript>4</subscript></entry>
- <entry>g<subscript>3</subscript></entry>
- <entry>g<subscript>2</subscript></entry>
- <entry>g<subscript>1</subscript></entry>
- <entry>g<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-SRGGB12-1X12">
- <entry>V4L2_MBUS_FMT_SRGGB12_1X12</entry>
- <entry>0x3012</entry>
- <entry></entry>
- <entry>r<subscript>11</subscript></entry>
- <entry>r<subscript>10</subscript></entry>
- <entry>r<subscript>9</subscript></entry>
- <entry>r<subscript>8</subscript></entry>
- <entry>r<subscript>7</subscript></entry>
- <entry>r<subscript>6</subscript></entry>
- <entry>r<subscript>5</subscript></entry>
- <entry>r<subscript>4</subscript></entry>
- <entry>r<subscript>3</subscript></entry>
- <entry>r<subscript>2</subscript></entry>
- <entry>r<subscript>1</subscript></entry>
- <entry>r<subscript>0</subscript></entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </section>
-
- <section>
- <title>Packed YUV Formats</title>
-
- <para>Those data formats transfer pixel data as (possibly downsampled) Y, U
- and V components. The format code is made of the following information.
- <itemizedlist>
- <listitem><para>The Y, U and V components order code, as transferred on the
- bus. Possible values are YUYV, UYVY, YVYU and VYUY.</para></listitem>
- <listitem><para>The number of bits per pixel component. All components are
- transferred on the same number of bits. Common values are 8, 10 and 12.</para>
- </listitem>
- <listitem><para>The number of bus samples per pixel. Pixels that are wider than
- the bus width must be transferred in multiple samples. Common values are
- 1, 1.5 (encoded as 1_5) and 2.</para></listitem>
- <listitem><para>The bus width. When the bus width is larger than the number of
- bits per pixel component, several components are packed in a single bus
- sample. The components are ordered as specified by the order code, with
- components on the left of the code transferred in the high order bits.
- Common values are 8 and 16.</para>
- </listitem>
- </itemizedlist>
- </para>
-
- <para>For instance, a format where pixels are encoded as 8-bit YUV values
- downsampled to 4:2:2 and transferred as 2 8-bit bus samples per pixel in the
- U, Y, V, Y order will be named <constant>V4L2_MBUS_FMT_UYVY8_2X8</constant>.
- </para>
-
- <para>The following table lisst existing packet YUV formats.</para>
-
- <table pgwide="0" frame="none" id="v4l2-mbus-pixelcode-yuv8">
- <title>YUV Formats</title>
- <tgroup cols="23">
- <colspec colname="id" align="left" />
- <colspec colname="code" align="center"/>
- <colspec colname="bit" />
- <colspec colnum="4" colname="b19" align="center" />
- <colspec colnum="5" colname="b18" align="center" />
- <colspec colnum="6" colname="b17" align="center" />
- <colspec colnum="7" colname="b16" align="center" />
- <colspec colnum="8" colname="b15" align="center" />
- <colspec colnum="9" colname="b14" align="center" />
- <colspec colnum="10" colname="b13" align="center" />
- <colspec colnum="11" colname="b12" align="center" />
- <colspec colnum="12" colname="b11" align="center" />
- <colspec colnum="13" colname="b10" align="center" />
- <colspec colnum="14" colname="b09" align="center" />
- <colspec colnum="15" colname="b08" align="center" />
- <colspec colnum="16" colname="b07" align="center" />
- <colspec colnum="17" colname="b06" align="center" />
- <colspec colnum="18" colname="b05" align="center" />
- <colspec colnum="19" colname="b04" align="center" />
- <colspec colnum="20" colname="b03" align="center" />
- <colspec colnum="21" colname="b02" align="center" />
- <colspec colnum="22" colname="b01" align="center" />
- <colspec colnum="23" colname="b00" align="center" />
- <spanspec namest="b19" nameend="b00" spanname="b0" />
- <thead>
- <row>
- <entry>Identifier</entry>
- <entry>Code</entry>
- <entry></entry>
- <entry spanname="b0">Data organization</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry>Bit</entry>
- <entry>19</entry>
- <entry>18</entry>
- <entry>17</entry>
- <entry>16</entry>
- <entry>15</entry>
- <entry>14</entry>
- <entry>13</entry>
- <entry>12</entry>
- <entry>11</entry>
- <entry>10</entry>
- <entry>9</entry>
- <entry>8</entry>
- <entry>7</entry>
- <entry>6</entry>
- <entry>5</entry>
- <entry>4</entry>
- <entry>3</entry>
- <entry>2</entry>
- <entry>1</entry>
- <entry>0</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row id="V4L2-MBUS-FMT-Y8-1X8">
- <entry>V4L2_MBUS_FMT_Y8_1X8</entry>
- <entry>0x2001</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-UYVY8-1_5X8">
- <entry>V4L2_MBUS_FMT_UYVY8_1_5X8</entry>
- <entry>0x2002</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-VYUY8-1_5X8">
- <entry>V4L2_MBUS_FMT_VYUY8_1_5X8</entry>
- <entry>0x2003</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-YUYV8-1_5X8">
- <entry>V4L2_MBUS_FMT_YUYV8_1_5X8</entry>
- <entry>0x2004</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-YVYU8-1_5X8">
- <entry>V4L2_MBUS_FMT_YVYU8_1_5X8</entry>
- <entry>0x2005</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-UYVY8-2X8">
- <entry>V4L2_MBUS_FMT_UYVY8_2X8</entry>
- <entry>0x2006</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-VYUY8-2X8">
- <entry>V4L2_MBUS_FMT_VYUY8_2X8</entry>
- <entry>0x2007</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-YUYV8-2X8">
- <entry>V4L2_MBUS_FMT_YUYV8_2X8</entry>
- <entry>0x2008</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-YVYU8-2X8">
- <entry>V4L2_MBUS_FMT_YVYU8_2X8</entry>
- <entry>0x2009</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-Y10-1X10">
- <entry>V4L2_MBUS_FMT_Y10_1X10</entry>
- <entry>0x200a</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>9</subscript></entry>
- <entry>y<subscript>8</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-YUYV10-2X10">
- <entry>V4L2_MBUS_FMT_YUYV10_2X10</entry>
- <entry>0x200b</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>9</subscript></entry>
- <entry>y<subscript>8</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>u<subscript>9</subscript></entry>
- <entry>u<subscript>8</subscript></entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>9</subscript></entry>
- <entry>y<subscript>8</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>v<subscript>9</subscript></entry>
- <entry>v<subscript>8</subscript></entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-YVYU10-2X10">
- <entry>V4L2_MBUS_FMT_YVYU10_2X10</entry>
- <entry>0x200c</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>9</subscript></entry>
- <entry>y<subscript>8</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>v<subscript>9</subscript></entry>
- <entry>v<subscript>8</subscript></entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>9</subscript></entry>
- <entry>y<subscript>8</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>u<subscript>9</subscript></entry>
- <entry>u<subscript>8</subscript></entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-Y12-1X12">
- <entry>V4L2_MBUS_FMT_Y12_1X12</entry>
- <entry>0x2013</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>11</subscript></entry>
- <entry>y<subscript>10</subscript></entry>
- <entry>y<subscript>9</subscript></entry>
- <entry>y<subscript>8</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-UYVY8-1X16">
- <entry>V4L2_MBUS_FMT_UYVY8_1X16</entry>
- <entry>0x200f</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-VYUY8-1X16">
- <entry>V4L2_MBUS_FMT_VYUY8_1X16</entry>
- <entry>0x2010</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-YUYV8-1X16">
- <entry>V4L2_MBUS_FMT_YUYV8_1X16</entry>
- <entry>0x2011</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-YVYU8-1X16">
- <entry>V4L2_MBUS_FMT_YVYU8_1X16</entry>
- <entry>0x2012</entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>-</entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-YUYV10-1X20">
- <entry>V4L2_MBUS_FMT_YUYV10_1X20</entry>
- <entry>0x200d</entry>
- <entry></entry>
- <entry>y<subscript>9</subscript></entry>
- <entry>y<subscript>8</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- <entry>u<subscript>9</subscript></entry>
- <entry>u<subscript>8</subscript></entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>y<subscript>9</subscript></entry>
- <entry>y<subscript>8</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- <entry>v<subscript>9</subscript></entry>
- <entry>v<subscript>8</subscript></entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row id="V4L2-MBUS-FMT-YVYU10-1X20">
- <entry>V4L2_MBUS_FMT_YVYU10_1X20</entry>
- <entry>0x200e</entry>
- <entry></entry>
- <entry>y<subscript>9</subscript></entry>
- <entry>y<subscript>8</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- <entry>v<subscript>9</subscript></entry>
- <entry>v<subscript>8</subscript></entry>
- <entry>v<subscript>7</subscript></entry>
- <entry>v<subscript>6</subscript></entry>
- <entry>v<subscript>5</subscript></entry>
- <entry>v<subscript>4</subscript></entry>
- <entry>v<subscript>3</subscript></entry>
- <entry>v<subscript>2</subscript></entry>
- <entry>v<subscript>1</subscript></entry>
- <entry>v<subscript>0</subscript></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>y<subscript>9</subscript></entry>
- <entry>y<subscript>8</subscript></entry>
- <entry>y<subscript>7</subscript></entry>
- <entry>y<subscript>6</subscript></entry>
- <entry>y<subscript>5</subscript></entry>
- <entry>y<subscript>4</subscript></entry>
- <entry>y<subscript>3</subscript></entry>
- <entry>y<subscript>2</subscript></entry>
- <entry>y<subscript>1</subscript></entry>
- <entry>y<subscript>0</subscript></entry>
- <entry>u<subscript>9</subscript></entry>
- <entry>u<subscript>8</subscript></entry>
- <entry>u<subscript>7</subscript></entry>
- <entry>u<subscript>6</subscript></entry>
- <entry>u<subscript>5</subscript></entry>
- <entry>u<subscript>4</subscript></entry>
- <entry>u<subscript>3</subscript></entry>
- <entry>u<subscript>2</subscript></entry>
- <entry>u<subscript>1</subscript></entry>
- <entry>u<subscript>0</subscript></entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </section>
-
- <section>
- <title>JPEG Compressed Formats</title>
-
- <para>Those data formats consist of an ordered sequence of 8-bit bytes
- obtained from JPEG compression process. Additionally to the
- <constant>_JPEG</constant> prefix the format code is made of
- the following information.
- <itemizedlist>
- <listitem><para>The number of bus samples per entropy encoded byte.</para></listitem>
- <listitem><para>The bus width.</para></listitem>
- </itemizedlist>
- </para>
-
- <para>For instance, for a JPEG baseline process and an 8-bit bus width
- the format will be named <constant>V4L2_MBUS_FMT_JPEG_1X8</constant>.
- </para>
-
- <para>The following table lists existing JPEG compressed formats.</para>
-
- <table pgwide="0" frame="none" id="v4l2-mbus-pixelcode-jpeg">
- <title>JPEG Formats</title>
- <tgroup cols="3">
- <colspec colname="id" align="left" />
- <colspec colname="code" align="left"/>
- <colspec colname="remarks" align="left"/>
- <thead>
- <row>
- <entry>Identifier</entry>
- <entry>Code</entry>
- <entry>Remarks</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row id="V4L2-MBUS-FMT-JPEG-1X8">
- <entry>V4L2_MBUS_FMT_JPEG_1X8</entry>
- <entry>0x4001</entry>
- <entry>Besides of its usage for the parallel bus this format is
- recommended for transmission of JPEG data over MIPI CSI bus
- using the User Defined 8-bit Data types.
- </entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </section>
- </section>
-</section>
diff --git a/Documentation/DocBook/v4l/v4l2.xml b/Documentation/DocBook/v4l/v4l2.xml
deleted file mode 100644
index a7fd76d..0000000
--- a/Documentation/DocBook/v4l/v4l2.xml
+++ /dev/null
@@ -1,539 +0,0 @@
- <partinfo>
- <authorgroup>
- <author>
- <firstname>Michael</firstname>
- <surname>Schimek</surname>
- <othername role="mi">H</othername>
- <affiliation>
- <address>
- <email>mschimek@gmx.at</email>
- </address>
- </affiliation>
- </author>
-
- <author>
- <firstname>Bill</firstname>
- <surname>Dirks</surname>
- <!-- Commented until Bill opts in to be spammed.
- <affiliation>
- <address>
- <email>bill@thedirks.org</email>
- </address>
- </affiliation> -->
- <contrib>Original author of the V4L2 API and
-documentation.</contrib>
- </author>
-
- <author>
- <firstname>Hans</firstname>
- <surname>Verkuil</surname>
- <contrib>Designed and documented the VIDIOC_LOG_STATUS ioctl,
-the extended control ioctls and major parts of the sliced VBI
-API.</contrib>
- <affiliation>
- <address>
- <email>hverkuil@xs4all.nl</email>
- </address>
- </affiliation>
- </author>
-
- <author>
- <firstname>Martin</firstname>
- <surname>Rubli</surname>
- <!--
- <affiliation>
- <address>
- <email>martin_rubli@logitech.com</email>
- </address>
- </affiliation> -->
- <contrib>Designed and documented the VIDIOC_ENUM_FRAMESIZES
-and VIDIOC_ENUM_FRAMEINTERVALS ioctls.</contrib>
- </author>
-
- <author>
- <firstname>Andy</firstname>
- <surname>Walls</surname>
- <contrib>Documented the fielded V4L2_MPEG_STREAM_VBI_FMT_IVTV
-MPEG stream embedded, sliced VBI data format in this specification.
-</contrib>
- <affiliation>
- <address>
- <email>awalls@md.metrocast.net</email>
- </address>
- </affiliation>
- </author>
-
- <author>
- <firstname>Mauro</firstname>
- <surname>Carvalho Chehab</surname>
- <contrib>Documented libv4l, designed and added v4l2grab example,
-Remote Controller chapter.</contrib>
- <affiliation>
- <address>
- <email>mchehab@redhat.com</email>
- </address>
- </affiliation>
- </author>
-
- <author>
- <firstname>Muralidharan</firstname>
- <surname>Karicheri</surname>
- <contrib>Documented the Digital Video timings API.</contrib>
- <affiliation>
- <address>
- <email>m-karicheri2@ti.com</email>
- </address>
- </affiliation>
- </author>
-
- <author>
- <firstname>Pawel</firstname>
- <surname>Osciak</surname>
- <contrib>Designed and documented the multi-planar API.</contrib>
- <affiliation>
- <address>
- <email>pawel AT osciak.com</email>
- </address>
- </affiliation>
- </author>
- </authorgroup>
-
- <copyright>
- <year>1999</year>
- <year>2000</year>
- <year>2001</year>
- <year>2002</year>
- <year>2003</year>
- <year>2004</year>
- <year>2005</year>
- <year>2006</year>
- <year>2007</year>
- <year>2008</year>
- <year>2009</year>
- <year>2010</year>
- <year>2011</year>
- <holder>Bill Dirks, Michael H. Schimek, Hans Verkuil, Martin
-Rubli, Andy Walls, Muralidharan Karicheri, Mauro Carvalho Chehab,
- Pawel Osciak</holder>
- </copyright>
- <legalnotice>
- <para>Except when explicitly stated as GPL, programming examples within
- this part can be used and distributed without restrictions.</para>
- </legalnotice>
- <revhistory>
- <!-- Put document revisions here, newest first. -->
- <!-- API revisions (changes and additions of defines, enums,
-structs, ioctls) must be noted in more detail in the history chapter
-(compat.xml), along with the possible impact on existing drivers and
-applications. -->
-
- <revision>
- <revnumber>2.6.39</revnumber>
- <date>2011-03-01</date>
- <authorinitials>mcc, po</authorinitials>
- <revremark>Removed VIDIOC_*_OLD from videodev2.h header and update it to reflect latest changes. Added the <link linkend="planar-apis">multi-planar API</link>.</revremark>
- </revision>
-
- <revision>
- <revnumber>2.6.37</revnumber>
- <date>2010-08-06</date>
- <authorinitials>hv</authorinitials>
- <revremark>Removed obsolete vtx (videotext) API.</revremark>
- </revision>
-
- <revision>
- <revnumber>2.6.33</revnumber>
- <date>2009-12-03</date>
- <authorinitials>mk</authorinitials>
- <revremark>Added documentation for the Digital Video timings API.</revremark>
- </revision>
-
- <revision>
- <revnumber>2.6.32</revnumber>
- <date>2009-08-31</date>
- <authorinitials>mcc</authorinitials>
- <revremark>Now, revisions will match the kernel version where
-the V4L2 API changes will be used by the Linux Kernel.
-Also added Remote Controller chapter.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.29</revnumber>
- <date>2009-08-26</date>
- <authorinitials>ev</authorinitials>
- <revremark>Added documentation for string controls and for FM Transmitter controls.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.28</revnumber>
- <date>2009-08-26</date>
- <authorinitials>gl</authorinitials>
- <revremark>Added V4L2_CID_BAND_STOP_FILTER documentation.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.27</revnumber>
- <date>2009-08-15</date>
- <authorinitials>mcc</authorinitials>
- <revremark>Added libv4l and Remote Controller documentation;
-added v4l2grab and keytable application examples.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.26</revnumber>
- <date>2009-07-23</date>
- <authorinitials>hv</authorinitials>
- <revremark>Finalized the RDS capture API. Added modulator and RDS encoder
-capabilities. Added support for string controls.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.25</revnumber>
- <date>2009-01-18</date>
- <authorinitials>hv</authorinitials>
- <revremark>Added pixel formats VYUY, NV16 and NV61, and changed
-the debug ioctls VIDIOC_DBG_G/S_REGISTER and VIDIOC_DBG_G_CHIP_IDENT.
-Added camera controls V4L2_CID_ZOOM_ABSOLUTE, V4L2_CID_ZOOM_RELATIVE,
-V4L2_CID_ZOOM_CONTINUOUS and V4L2_CID_PRIVACY.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.24</revnumber>
- <date>2008-03-04</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Added pixel formats Y16 and SBGGR16, new controls
-and a camera controls class. Removed VIDIOC_G/S_MPEGCOMP.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.23</revnumber>
- <date>2007-08-30</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Fixed a typo in VIDIOC_DBG_G/S_REGISTER.
-Clarified the byte order of packed pixel formats.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.22</revnumber>
- <date>2007-08-29</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Added the Video Output Overlay interface, new MPEG
-controls, V4L2_FIELD_INTERLACED_TB and V4L2_FIELD_INTERLACED_BT,
-VIDIOC_DBG_G/S_REGISTER, VIDIOC_(TRY_)ENCODER_CMD,
-VIDIOC_G_CHIP_IDENT, VIDIOC_G_ENC_INDEX, new pixel formats.
-Clarifications in the cropping chapter, about RGB pixel formats, the
-mmap(), poll(), select(), read() and write() functions. Typographical
-fixes.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.21</revnumber>
- <date>2006-12-19</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Fixed a link in the VIDIOC_G_EXT_CTRLS section.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.20</revnumber>
- <date>2006-11-24</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Clarified the purpose of the audioset field in
-struct v4l2_input and v4l2_output.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.19</revnumber>
- <date>2006-10-19</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Documented V4L2_PIX_FMT_RGB444.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.18</revnumber>
- <date>2006-10-18</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Added the description of extended controls by Hans
-Verkuil. Linked V4L2_PIX_FMT_MPEG to V4L2_CID_MPEG_STREAM_TYPE.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.17</revnumber>
- <date>2006-10-12</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Corrected V4L2_PIX_FMT_HM12 description.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.16</revnumber>
- <date>2006-10-08</date>
- <authorinitials>mhs</authorinitials>
- <revremark>VIDIOC_ENUM_FRAMESIZES and
-VIDIOC_ENUM_FRAMEINTERVALS are now part of the API.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.15</revnumber>
- <date>2006-09-23</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Cleaned up the bibliography, added BT.653 and
-BT.1119. capture.c/start_capturing() for user pointer I/O did not
-initialize the buffer index. Documented the V4L MPEG and MJPEG
-VID_TYPEs and V4L2_PIX_FMT_SBGGR8. Updated the list of reserved pixel
-formats. See the history chapter for API changes.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.14</revnumber>
- <date>2006-09-14</date>
- <authorinitials>mr</authorinitials>
- <revremark>Added VIDIOC_ENUM_FRAMESIZES and
-VIDIOC_ENUM_FRAMEINTERVALS proposal for frame format enumeration of
-digital devices.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.13</revnumber>
- <date>2006-04-07</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Corrected the description of struct v4l2_window
-clips. New V4L2_STD_ and V4L2_TUNER_MODE_LANG1_LANG2
-defines.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.12</revnumber>
- <date>2006-02-03</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Corrected the description of struct
-v4l2_captureparm and v4l2_outputparm.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.11</revnumber>
- <date>2006-01-27</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Improved the description of struct
-v4l2_tuner.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.10</revnumber>
- <date>2006-01-10</date>
- <authorinitials>mhs</authorinitials>
- <revremark>VIDIOC_G_INPUT and VIDIOC_S_PARM
-clarifications.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.9</revnumber>
- <date>2005-11-27</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Improved the 525 line numbering diagram. Hans
-Verkuil and I rewrote the sliced VBI section. He also contributed a
-VIDIOC_LOG_STATUS page. Fixed VIDIOC_S_STD call in the video standard
-selection example. Various updates.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.8</revnumber>
- <date>2004-10-04</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Somehow a piece of junk slipped into the capture
-example, removed.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.7</revnumber>
- <date>2004-09-19</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Fixed video standard selection, control
-enumeration, downscaling and aspect example. Added read and user
-pointer i/o to video capture example.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.6</revnumber>
- <date>2004-08-01</date>
- <authorinitials>mhs</authorinitials>
- <revremark>v4l2_buffer changes, added video capture example,
-various corrections.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.5</revnumber>
- <date>2003-11-05</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Pixel format erratum.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.4</revnumber>
- <date>2003-09-17</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Corrected source and Makefile to generate a PDF.
-SGML fixes. Added latest API changes. Closed gaps in the history
-chapter.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.3</revnumber>
- <date>2003-02-05</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Another draft, more corrections.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.2</revnumber>
- <date>2003-01-15</date>
- <authorinitials>mhs</authorinitials>
- <revremark>Second draft, with corrections pointed out by Gerd
-Knorr.</revremark>
- </revision>
-
- <revision>
- <revnumber>0.1</revnumber>
- <date>2002-12-01</date>
- <authorinitials>mhs</authorinitials>
- <revremark>First draft, based on documentation by Bill Dirks
-and discussions on the V4L mailing list.</revremark>
- </revision>
- </revhistory>
-</partinfo>
-
-<title>Video for Linux Two API Specification</title>
- <subtitle>Revision 2.6.39</subtitle>
-
- <chapter id="common">
- &sub-common;
- </chapter>
-
- <chapter id="pixfmt">
- &sub-pixfmt;
- </chapter>
-
- <chapter id="io">
- &sub-io;
- </chapter>
-
- <chapter id="devices">
- <title>Interfaces</title>
-
- <section id="capture"> &sub-dev-capture; </section>
- <section id="overlay"> &sub-dev-overlay; </section>
- <section id="output"> &sub-dev-output; </section>
- <section id="osd"> &sub-dev-osd; </section>
- <section id="codec"> &sub-dev-codec; </section>
- <section id="effect"> &sub-dev-effect; </section>
- <section id="raw-vbi"> &sub-dev-raw-vbi; </section>
- <section id="sliced"> &sub-dev-sliced-vbi; </section>
- <section id="ttx"> &sub-dev-teletext; </section>
- <section id="radio"> &sub-dev-radio; </section>
- <section id="rds"> &sub-dev-rds; </section>
- <section id="event"> &sub-dev-event; </section>
- <section id="subdev"> &sub-dev-subdev; </section>
- </chapter>
-
- <chapter id="driver">
- &sub-driver;
- </chapter>
-
- <chapter id="libv4l">
- &sub-libv4l;
- </chapter>
-
- <chapter id="compat">
- &sub-compat;
- </chapter>
-
- <appendix id="user-func">
- <title>Function Reference</title>
-
- <!-- Keep this alphabetically sorted. -->
-
- &sub-close;
- &sub-ioctl;
- <!-- All ioctls go here. -->
- &sub-cropcap;
- &sub-dbg-g-chip-ident;
- &sub-dbg-g-register;
- &sub-dqevent;
- &sub-encoder-cmd;
- &sub-enumaudio;
- &sub-enumaudioout;
- &sub-enum-dv-presets;
- &sub-enum-fmt;
- &sub-enum-framesizes;
- &sub-enum-frameintervals;
- &sub-enuminput;
- &sub-enumoutput;
- &sub-enumstd;
- &sub-g-audio;
- &sub-g-audioout;
- &sub-g-crop;
- &sub-g-ctrl;
- &sub-g-dv-preset;
- &sub-g-dv-timings;
- &sub-g-enc-index;
- &sub-g-ext-ctrls;
- &sub-g-fbuf;
- &sub-g-fmt;
- &sub-g-frequency;
- &sub-g-input;
- &sub-g-jpegcomp;
- &sub-g-modulator;
- &sub-g-output;
- &sub-g-parm;
- &sub-g-priority;
- &sub-g-sliced-vbi-cap;
- &sub-g-std;
- &sub-g-tuner;
- &sub-log-status;
- &sub-overlay;
- &sub-qbuf;
- &sub-querybuf;
- &sub-querycap;
- &sub-queryctrl;
- &sub-query-dv-preset;
- &sub-querystd;
- &sub-reqbufs;
- &sub-s-hw-freq-seek;
- &sub-streamon;
- &sub-subdev-enum-frame-interval;
- &sub-subdev-enum-frame-size;
- &sub-subdev-enum-mbus-code;
- &sub-subdev-g-crop;
- &sub-subdev-g-fmt;
- &sub-subdev-g-frame-interval;
- &sub-subscribe-event;
- <!-- End of ioctls. -->
- &sub-mmap;
- &sub-munmap;
- &sub-open;
- &sub-poll;
- &sub-read;
- &sub-select;
- &sub-write;
- </appendix>
-
- <appendix id="videodev">
- <title>Video For Linux Two Header File</title>
- &sub-videodev2-h;
- </appendix>
-
- <appendix id="capture-example">
- <title>Video Capture Example</title>
- &sub-capture-c;
- </appendix>
-
- <appendix id="v4l2grab-example">
- <title>Video Grabber example using libv4l</title>
- <para>This program demonstrates how to grab V4L2 images in ppm format by
-using libv4l handlers. The advantage is that this grabber can potentially work
-with any V4L2 driver.</para>
- &sub-v4l2grab-c;
- </appendix>
-
- &sub-media-indices;
-
- &sub-biblio;
-
diff --git a/Documentation/DocBook/v4l/vbi_525.gif b/Documentation/DocBook/v4l/vbi_525.gif
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diff --git a/Documentation/DocBook/v4l/videodev2.h.xml b/Documentation/DocBook/v4l/videodev2.h.xml
deleted file mode 100644
index c50536a..0000000
--- a/Documentation/DocBook/v4l/videodev2.h.xml
+++ /dev/null
@@ -1,1946 +0,0 @@
-<programlisting>
-/*
- * Video for Linux Two header file
- *
- * Copyright (C) 1999-2007 the contributors
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * Alternatively you can redistribute this file under the terms of the
- * BSD license as stated below:
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. The names of its contributors may not be used to endorse or promote
- * products derived from this software without specific prior written
- * permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Header file for v4l or V4L2 drivers and applications
- * with public API.
- * All kernel-specific stuff were moved to media/v4l2-dev.h, so
- * no #if __KERNEL tests are allowed here
- *
- * See http://linuxtv.org for more info
- *
- * Author: Bill Dirks <bill@thedirks.org>
- * Justin Schoeman
- * Hans Verkuil <hverkuil@xs4all.nl>
- * et al.
- */
-#ifndef __LINUX_VIDEODEV2_H
-#define __LINUX_VIDEODEV2_H
-
-#ifdef __KERNEL__
-#include <linux/time.h> /* need struct timeval */
-#else
-#include <sys/time.h>
-#endif
-#include <linux/compiler.h>
-#include <linux/ioctl.h>
-#include <linux/types.h>
-
-/*
- * Common stuff for both V4L1 and V4L2
- * Moved from videodev.h
- */
-#define VIDEO_MAX_FRAME 32
-#define VIDEO_MAX_PLANES 8
-
-#ifndef __KERNEL__
-
-/* These defines are V4L1 specific and should not be used with the V4L2 API!
- They will be removed from this header in the future. */
-
-#define VID_TYPE_CAPTURE 1 /* Can capture */
-#define VID_TYPE_TUNER 2 /* Can tune */
-#define VID_TYPE_TELETEXT 4 /* Does teletext */
-#define VID_TYPE_OVERLAY 8 /* Overlay onto frame buffer */
-#define VID_TYPE_CHROMAKEY 16 /* Overlay by chromakey */
-#define VID_TYPE_CLIPPING 32 /* Can clip */
-#define VID_TYPE_FRAMERAM 64 /* Uses the frame buffer memory */
-#define VID_TYPE_SCALES 128 /* Scalable */
-#define VID_TYPE_MONOCHROME 256 /* Monochrome only */
-#define VID_TYPE_SUBCAPTURE 512 /* Can capture subareas of the image */
-#define VID_TYPE_MPEG_DECODER 1024 /* Can decode MPEG streams */
-#define VID_TYPE_MPEG_ENCODER 2048 /* Can encode MPEG streams */
-#define VID_TYPE_MJPEG_DECODER 4096 /* Can decode MJPEG streams */
-#define VID_TYPE_MJPEG_ENCODER 8192 /* Can encode MJPEG streams */
-#endif
-
-/*
- * M I S C E L L A N E O U S
- */
-
-/* Four-character-code (FOURCC) */
-#define v4l2_fourcc(a, b, c, d)\
- ((__u32)(a) | ((__u32)(b) << 8) | ((__u32)(c) << 16) | ((__u32)(d) << 24))
-
-/*
- * E N U M S
- */
-enum <link linkend="v4l2-field">v4l2_field</link> {
- V4L2_FIELD_ANY = 0, /* driver can choose from none,
- top, bottom, interlaced
- depending on whatever it thinks
- is approximate ... */
- V4L2_FIELD_NONE = 1, /* this device has no fields ... */
- V4L2_FIELD_TOP = 2, /* top field only */
- V4L2_FIELD_BOTTOM = 3, /* bottom field only */
- V4L2_FIELD_INTERLACED = 4, /* both fields interlaced */
- V4L2_FIELD_SEQ_TB = 5, /* both fields sequential into one
- buffer, top-bottom order */
- V4L2_FIELD_SEQ_BT = 6, /* same as above + bottom-top order */
- V4L2_FIELD_ALTERNATE = 7, /* both fields alternating into
- separate buffers */
- V4L2_FIELD_INTERLACED_TB = 8, /* both fields interlaced, top field
- first and the top field is
- transmitted first */
- V4L2_FIELD_INTERLACED_BT = 9, /* both fields interlaced, top field
- first and the bottom field is
- transmitted first */
-};
-#define V4L2_FIELD_HAS_TOP(field) \
- ((field) == V4L2_FIELD_TOP ||\
- (field) == V4L2_FIELD_INTERLACED ||\
- (field) == V4L2_FIELD_INTERLACED_TB ||\
- (field) == V4L2_FIELD_INTERLACED_BT ||\
- (field) == V4L2_FIELD_SEQ_TB ||\
- (field) == V4L2_FIELD_SEQ_BT)
-#define V4L2_FIELD_HAS_BOTTOM(field) \
- ((field) == V4L2_FIELD_BOTTOM ||\
- (field) == V4L2_FIELD_INTERLACED ||\
- (field) == V4L2_FIELD_INTERLACED_TB ||\
- (field) == V4L2_FIELD_INTERLACED_BT ||\
- (field) == V4L2_FIELD_SEQ_TB ||\
- (field) == V4L2_FIELD_SEQ_BT)
-#define V4L2_FIELD_HAS_BOTH(field) \
- ((field) == V4L2_FIELD_INTERLACED ||\
- (field) == V4L2_FIELD_INTERLACED_TB ||\
- (field) == V4L2_FIELD_INTERLACED_BT ||\
- (field) == V4L2_FIELD_SEQ_TB ||\
- (field) == V4L2_FIELD_SEQ_BT)
-
-enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> {
- V4L2_BUF_TYPE_VIDEO_CAPTURE = 1,
- V4L2_BUF_TYPE_VIDEO_OUTPUT = 2,
- V4L2_BUF_TYPE_VIDEO_OVERLAY = 3,
- V4L2_BUF_TYPE_VBI_CAPTURE = 4,
- V4L2_BUF_TYPE_VBI_OUTPUT = 5,
- V4L2_BUF_TYPE_SLICED_VBI_CAPTURE = 6,
- V4L2_BUF_TYPE_SLICED_VBI_OUTPUT = 7,
-#if 1
- /* Experimental */
- V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY = 8,
-#endif
- V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE = 9,
- V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE = 10,
- V4L2_BUF_TYPE_PRIVATE = 0x80,
-};
-
-#define V4L2_TYPE_IS_MULTIPLANAR(type) \
- ((type) == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE \
- || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
-
-#define V4L2_TYPE_IS_OUTPUT(type) \
- ((type) == V4L2_BUF_TYPE_VIDEO_OUTPUT \
- || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE \
- || (type) == V4L2_BUF_TYPE_VIDEO_OVERLAY \
- || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY \
- || (type) == V4L2_BUF_TYPE_VBI_OUTPUT \
- || (type) == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT)
-
-enum <link linkend="v4l2-tuner-type">v4l2_tuner_type</link> {
- V4L2_TUNER_RADIO = 1,
- V4L2_TUNER_ANALOG_TV = 2,
- V4L2_TUNER_DIGITAL_TV = 3,
-};
-
-enum <link linkend="v4l2-memory">v4l2_memory</link> {
- V4L2_MEMORY_MMAP = 1,
- V4L2_MEMORY_USERPTR = 2,
- V4L2_MEMORY_OVERLAY = 3,
-};
-
-/* see also http://vektor.theorem.ca/graphics/ycbcr/ */
-enum <link linkend="v4l2-colorspace">v4l2_colorspace</link> {
- /* ITU-R 601 -- broadcast NTSC/PAL */
- V4L2_COLORSPACE_SMPTE170M = 1,
-
- /* 1125-Line (US) HDTV */
- V4L2_COLORSPACE_SMPTE240M = 2,
-
- /* HD and modern captures. */
- V4L2_COLORSPACE_REC709 = 3,
-
- /* broken BT878 extents (601, luma range 16-253 instead of 16-235) */
- V4L2_COLORSPACE_BT878 = 4,
-
- /* These should be useful. Assume 601 extents. */
- V4L2_COLORSPACE_470_SYSTEM_M = 5,
- V4L2_COLORSPACE_470_SYSTEM_BG = 6,
-
- /* I know there will be cameras that send this. So, this is
- * unspecified chromaticities and full 0-255 on each of the
- * Y'CbCr components
- */
- V4L2_COLORSPACE_JPEG = 7,
-
- /* For RGB colourspaces, this is probably a good start. */
- V4L2_COLORSPACE_SRGB = 8,
-};
-
-enum <link linkend="v4l2-priority">v4l2_priority</link> {
- V4L2_PRIORITY_UNSET = 0, /* not initialized */
- V4L2_PRIORITY_BACKGROUND = 1,
- V4L2_PRIORITY_INTERACTIVE = 2,
- V4L2_PRIORITY_RECORD = 3,
- V4L2_PRIORITY_DEFAULT = V4L2_PRIORITY_INTERACTIVE,
-};
-
-struct <link linkend="v4l2-rect">v4l2_rect</link> {
- __s32 left;
- __s32 top;
- __s32 width;
- __s32 height;
-};
-
-struct <link linkend="v4l2-fract">v4l2_fract</link> {
- __u32 numerator;
- __u32 denominator;
-};
-
-/*
- * D R I V E R C A P A B I L I T I E S
- */
-struct <link linkend="v4l2-capability">v4l2_capability</link> {
- __u8 driver[16]; /* i.e.ie; "bttv" */
- __u8 card[32]; /* i.e.ie; "Hauppauge WinTV" */
- __u8 bus_info[32]; /* "PCI:" + pci_name(pci_dev) */
- __u32 version; /* should use KERNEL_VERSION() */
- __u32 capabilities; /* Device capabilities */
- __u32 reserved[4];
-};
-
-/* Values for 'capabilities' field */
-#define V4L2_CAP_VIDEO_CAPTURE 0x00000001 /* Is a video capture device */
-#define V4L2_CAP_VIDEO_OUTPUT 0x00000002 /* Is a video output device */
-#define V4L2_CAP_VIDEO_OVERLAY 0x00000004 /* Can do video overlay */
-#define V4L2_CAP_VBI_CAPTURE 0x00000010 /* Is a raw VBI capture device */
-#define V4L2_CAP_VBI_OUTPUT 0x00000020 /* Is a raw VBI output device */
-#define V4L2_CAP_SLICED_VBI_CAPTURE 0x00000040 /* Is a sliced VBI capture device */
-#define V4L2_CAP_SLICED_VBI_OUTPUT 0x00000080 /* Is a sliced VBI output device */
-#define V4L2_CAP_RDS_CAPTURE 0x00000100 /* RDS data capture */
-#define V4L2_CAP_VIDEO_OUTPUT_OVERLAY 0x00000200 /* Can do video output overlay */
-#define V4L2_CAP_HW_FREQ_SEEK 0x00000400 /* Can do hardware frequency seek */
-#define V4L2_CAP_RDS_OUTPUT 0x00000800 /* Is an RDS encoder */
-
-/* Is a video capture device that supports multiplanar formats */
-#define V4L2_CAP_VIDEO_CAPTURE_MPLANE 0x00001000
-/* Is a video output device that supports multiplanar formats */
-#define V4L2_CAP_VIDEO_OUTPUT_MPLANE 0x00002000
-
-#define V4L2_CAP_TUNER 0x00010000 /* has a tuner */
-#define V4L2_CAP_AUDIO 0x00020000 /* has audio support */
-#define V4L2_CAP_RADIO 0x00040000 /* is a radio device */
-#define V4L2_CAP_MODULATOR 0x00080000 /* has a modulator */
-
-#define V4L2_CAP_READWRITE 0x01000000 /* read/write systemcalls */
-#define V4L2_CAP_ASYNCIO 0x02000000 /* async I/O */
-#define V4L2_CAP_STREAMING 0x04000000 /* streaming I/O ioctls */
-
-/*
- * V I D E O I M A G E F O R M A T
- */
-struct <link linkend="v4l2-pix-format">v4l2_pix_format</link> {
- __u32 width;
- __u32 height;
- __u32 pixelformat;
- enum <link linkend="v4l2-field">v4l2_field</link> field;
- __u32 bytesperline; /* for padding, zero if unused */
- __u32 sizeimage;
- enum <link linkend="v4l2-colorspace">v4l2_colorspace</link> colorspace;
- __u32 priv; /* private data, depends on pixelformat */
-};
-
-/* Pixel format FOURCC depth Description */
-
-/* RGB formats */
-#define <link linkend="V4L2-PIX-FMT-RGB332">V4L2_PIX_FMT_RGB332</link> v4l2_fourcc('R', 'G', 'B', '1') /* 8 RGB-3-3-2 */
-#define <link linkend="V4L2-PIX-FMT-RGB444">V4L2_PIX_FMT_RGB444</link> v4l2_fourcc('R', '4', '4', '4') /* 16 xxxxrrrr ggggbbbb */
-#define <link linkend="V4L2-PIX-FMT-RGB555">V4L2_PIX_FMT_RGB555</link> v4l2_fourcc('R', 'G', 'B', 'O') /* 16 RGB-5-5-5 */
-#define <link linkend="V4L2-PIX-FMT-RGB565">V4L2_PIX_FMT_RGB565</link> v4l2_fourcc('R', 'G', 'B', 'P') /* 16 RGB-5-6-5 */
-#define <link linkend="V4L2-PIX-FMT-RGB555X">V4L2_PIX_FMT_RGB555X</link> v4l2_fourcc('R', 'G', 'B', 'Q') /* 16 RGB-5-5-5 BE */
-#define <link linkend="V4L2-PIX-FMT-RGB565X">V4L2_PIX_FMT_RGB565X</link> v4l2_fourcc('R', 'G', 'B', 'R') /* 16 RGB-5-6-5 BE */
-#define <link linkend="V4L2-PIX-FMT-BGR666">V4L2_PIX_FMT_BGR666</link> v4l2_fourcc('B', 'G', 'R', 'H') /* 18 BGR-6-6-6 */
-#define <link linkend="V4L2-PIX-FMT-BGR24">V4L2_PIX_FMT_BGR24</link> v4l2_fourcc('B', 'G', 'R', '3') /* 24 BGR-8-8-8 */
-#define <link linkend="V4L2-PIX-FMT-RGB24">V4L2_PIX_FMT_RGB24</link> v4l2_fourcc('R', 'G', 'B', '3') /* 24 RGB-8-8-8 */
-#define <link linkend="V4L2-PIX-FMT-BGR32">V4L2_PIX_FMT_BGR32</link> v4l2_fourcc('B', 'G', 'R', '4') /* 32 BGR-8-8-8-8 */
-#define <link linkend="V4L2-PIX-FMT-RGB32">V4L2_PIX_FMT_RGB32</link> v4l2_fourcc('R', 'G', 'B', '4') /* 32 RGB-8-8-8-8 */
-
-/* Grey formats */
-#define <link linkend="V4L2-PIX-FMT-GREY">V4L2_PIX_FMT_GREY</link> v4l2_fourcc('G', 'R', 'E', 'Y') /* 8 Greyscale */
-#define <link linkend="V4L2-PIX-FMT-Y4">V4L2_PIX_FMT_Y4</link> v4l2_fourcc('Y', '0', '4', ' ') /* 4 Greyscale */
-#define <link linkend="V4L2-PIX-FMT-Y6">V4L2_PIX_FMT_Y6</link> v4l2_fourcc('Y', '0', '6', ' ') /* 6 Greyscale */
-#define <link linkend="V4L2-PIX-FMT-Y10">V4L2_PIX_FMT_Y10</link> v4l2_fourcc('Y', '1', '0', ' ') /* 10 Greyscale */
-#define <link linkend="V4L2-PIX-FMT-Y16">V4L2_PIX_FMT_Y16</link> v4l2_fourcc('Y', '1', '6', ' ') /* 16 Greyscale */
-
-/* Grey bit-packed formats */
-#define <link linkend="V4L2-PIX-FMT-Y10BPACK">V4L2_PIX_FMT_Y10BPACK</link> v4l2_fourcc('Y', '1', '0', 'B') /* 10 Greyscale bit-packed */
-
-/* Palette formats */
-#define <link linkend="V4L2-PIX-FMT-PAL8">V4L2_PIX_FMT_PAL8</link> v4l2_fourcc('P', 'A', 'L', '8') /* 8 8-bit palette */
-
-/* Luminance+Chrominance formats */
-#define <link linkend="V4L2-PIX-FMT-YVU410">V4L2_PIX_FMT_YVU410</link> v4l2_fourcc('Y', 'V', 'U', '9') /* 9 YVU 4:1:0 */
-#define <link linkend="V4L2-PIX-FMT-YVU420">V4L2_PIX_FMT_YVU420</link> v4l2_fourcc('Y', 'V', '1', '2') /* 12 YVU 4:2:0 */
-#define <link linkend="V4L2-PIX-FMT-YUYV">V4L2_PIX_FMT_YUYV</link> v4l2_fourcc('Y', 'U', 'Y', 'V') /* 16 YUV 4:2:2 */
-#define <link linkend="V4L2-PIX-FMT-YYUV">V4L2_PIX_FMT_YYUV</link> v4l2_fourcc('Y', 'Y', 'U', 'V') /* 16 YUV 4:2:2 */
-#define <link linkend="V4L2-PIX-FMT-YVYU">V4L2_PIX_FMT_YVYU</link> v4l2_fourcc('Y', 'V', 'Y', 'U') /* 16 YVU 4:2:2 */
-#define <link linkend="V4L2-PIX-FMT-UYVY">V4L2_PIX_FMT_UYVY</link> v4l2_fourcc('U', 'Y', 'V', 'Y') /* 16 YUV 4:2:2 */
-#define <link linkend="V4L2-PIX-FMT-VYUY">V4L2_PIX_FMT_VYUY</link> v4l2_fourcc('V', 'Y', 'U', 'Y') /* 16 YUV 4:2:2 */
-#define <link linkend="V4L2-PIX-FMT-YUV422P">V4L2_PIX_FMT_YUV422P</link> v4l2_fourcc('4', '2', '2', 'P') /* 16 YVU422 planar */
-#define <link linkend="V4L2-PIX-FMT-YUV411P">V4L2_PIX_FMT_YUV411P</link> v4l2_fourcc('4', '1', '1', 'P') /* 16 YVU411 planar */
-#define <link linkend="V4L2-PIX-FMT-Y41P">V4L2_PIX_FMT_Y41P</link> v4l2_fourcc('Y', '4', '1', 'P') /* 12 YUV 4:1:1 */
-#define <link linkend="V4L2-PIX-FMT-YUV444">V4L2_PIX_FMT_YUV444</link> v4l2_fourcc('Y', '4', '4', '4') /* 16 xxxxyyyy uuuuvvvv */
-#define <link linkend="V4L2-PIX-FMT-YUV555">V4L2_PIX_FMT_YUV555</link> v4l2_fourcc('Y', 'U', 'V', 'O') /* 16 YUV-5-5-5 */
-#define <link linkend="V4L2-PIX-FMT-YUV565">V4L2_PIX_FMT_YUV565</link> v4l2_fourcc('Y', 'U', 'V', 'P') /* 16 YUV-5-6-5 */
-#define <link linkend="V4L2-PIX-FMT-YUV32">V4L2_PIX_FMT_YUV32</link> v4l2_fourcc('Y', 'U', 'V', '4') /* 32 YUV-8-8-8-8 */
-#define <link linkend="V4L2-PIX-FMT-YUV410">V4L2_PIX_FMT_YUV410</link> v4l2_fourcc('Y', 'U', 'V', '9') /* 9 YUV 4:1:0 */
-#define <link linkend="V4L2-PIX-FMT-YUV420">V4L2_PIX_FMT_YUV420</link> v4l2_fourcc('Y', 'U', '1', '2') /* 12 YUV 4:2:0 */
-#define <link linkend="V4L2-PIX-FMT-HI240">V4L2_PIX_FMT_HI240</link> v4l2_fourcc('H', 'I', '2', '4') /* 8 8-bit color */
-#define <link linkend="V4L2-PIX-FMT-HM12">V4L2_PIX_FMT_HM12</link> v4l2_fourcc('H', 'M', '1', '2') /* 8 YUV 4:2:0 16x16 macroblocks */
-#define <link linkend="V4L2-PIX-FMT-M420">V4L2_PIX_FMT_M420</link> v4l2_fourcc('M', '4', '2', '0') /* 12 YUV 4:2:0 2 lines y, 1 line uv interleaved */
-
-/* two planes -- one Y, one Cr + Cb interleaved */
-#define <link linkend="V4L2-PIX-FMT-NV12">V4L2_PIX_FMT_NV12</link> v4l2_fourcc('N', 'V', '1', '2') /* 12 Y/CbCr 4:2:0 */
-#define <link linkend="V4L2-PIX-FMT-NV21">V4L2_PIX_FMT_NV21</link> v4l2_fourcc('N', 'V', '2', '1') /* 12 Y/CrCb 4:2:0 */
-#define <link linkend="V4L2-PIX-FMT-NV16">V4L2_PIX_FMT_NV16</link> v4l2_fourcc('N', 'V', '1', '6') /* 16 Y/CbCr 4:2:2 */
-#define <link linkend="V4L2-PIX-FMT-NV61">V4L2_PIX_FMT_NV61</link> v4l2_fourcc('N', 'V', '6', '1') /* 16 Y/CrCb 4:2:2 */
-
-/* two non contiguous planes - one Y, one Cr + Cb interleaved */
-#define <link linkend="V4L2-PIX-FMT-NV12M">V4L2_PIX_FMT_NV12M</link> v4l2_fourcc('N', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 */
-#define <link linkend="V4L2-PIX-FMT-NV12MT">V4L2_PIX_FMT_NV12MT</link> v4l2_fourcc('T', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 64x32 macroblocks */
-
-/* three non contiguous planes - Y, Cb, Cr */
-#define <link linkend="V4L2-PIX-FMT-YUV420M">V4L2_PIX_FMT_YUV420M</link> v4l2_fourcc('Y', 'M', '1', '2') /* 12 YUV420 planar */
-
-/* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */
-#define <link linkend="V4L2-PIX-FMT-SBGGR8">V4L2_PIX_FMT_SBGGR8</link> v4l2_fourcc('B', 'A', '8', '1') /* 8 BGBG.. GRGR.. */
-#define <link linkend="V4L2-PIX-FMT-SGBRG8">V4L2_PIX_FMT_SGBRG8</link> v4l2_fourcc('G', 'B', 'R', 'G') /* 8 GBGB.. RGRG.. */
-#define <link linkend="V4L2-PIX-FMT-SGRBG8">V4L2_PIX_FMT_SGRBG8</link> v4l2_fourcc('G', 'R', 'B', 'G') /* 8 GRGR.. BGBG.. */
-#define <link linkend="V4L2-PIX-FMT-SRGGB8">V4L2_PIX_FMT_SRGGB8</link> v4l2_fourcc('R', 'G', 'G', 'B') /* 8 RGRG.. GBGB.. */
-#define <link linkend="V4L2-PIX-FMT-SBGGR10">V4L2_PIX_FMT_SBGGR10</link> v4l2_fourcc('B', 'G', '1', '0') /* 10 BGBG.. GRGR.. */
-#define <link linkend="V4L2-PIX-FMT-SGBRG10">V4L2_PIX_FMT_SGBRG10</link> v4l2_fourcc('G', 'B', '1', '0') /* 10 GBGB.. RGRG.. */
-#define <link linkend="V4L2-PIX-FMT-SGRBG10">V4L2_PIX_FMT_SGRBG10</link> v4l2_fourcc('B', 'A', '1', '0') /* 10 GRGR.. BGBG.. */
-#define <link linkend="V4L2-PIX-FMT-SRGGB10">V4L2_PIX_FMT_SRGGB10</link> v4l2_fourcc('R', 'G', '1', '0') /* 10 RGRG.. GBGB.. */
- /* 10bit raw bayer DPCM compressed to 8 bits */
-#define <link linkend="V4L2-PIX-FMT-SGRBG10DPCM8">V4L2_PIX_FMT_SGRBG10DPCM8</link> v4l2_fourcc('B', 'D', '1', '0')
- /*
- * 10bit raw bayer, expanded to 16 bits
- * xxxxrrrrrrrrrrxxxxgggggggggg xxxxggggggggggxxxxbbbbbbbbbb...
- */
-#define <link linkend="V4L2-PIX-FMT-SBGGR16">V4L2_PIX_FMT_SBGGR16</link> v4l2_fourcc('B', 'Y', 'R', '2') /* 16 BGBG.. GRGR.. */
-
-/* compressed formats */
-#define <link linkend="V4L2-PIX-FMT-MJPEG">V4L2_PIX_FMT_MJPEG</link> v4l2_fourcc('M', 'J', 'P', 'G') /* Motion-JPEG */
-#define <link linkend="V4L2-PIX-FMT-JPEG">V4L2_PIX_FMT_JPEG</link> v4l2_fourcc('J', 'P', 'E', 'G') /* JFIF JPEG */
-#define <link linkend="V4L2-PIX-FMT-DV">V4L2_PIX_FMT_DV</link> v4l2_fourcc('d', 'v', 's', 'd') /* 1394 */
-#define <link linkend="V4L2-PIX-FMT-MPEG">V4L2_PIX_FMT_MPEG</link> v4l2_fourcc('M', 'P', 'E', 'G') /* MPEG-1/2/4 */
-
-/* Vendor-specific formats */
-#define <link linkend="V4L2-PIX-FMT-CPIA1">V4L2_PIX_FMT_CPIA1</link> v4l2_fourcc('C', 'P', 'I', 'A') /* cpia1 YUV */
-#define <link linkend="V4L2-PIX-FMT-WNVA">V4L2_PIX_FMT_WNVA</link> v4l2_fourcc('W', 'N', 'V', 'A') /* Winnov hw compress */
-#define <link linkend="V4L2-PIX-FMT-SN9C10X">V4L2_PIX_FMT_SN9C10X</link> v4l2_fourcc('S', '9', '1', '0') /* SN9C10x compression */
-#define <link linkend="V4L2-PIX-FMT-SN9C20X-I420">V4L2_PIX_FMT_SN9C20X_I420</link> v4l2_fourcc('S', '9', '2', '0') /* SN9C20x YUV 4:2:0 */
-#define <link linkend="V4L2-PIX-FMT-PWC1">V4L2_PIX_FMT_PWC1</link> v4l2_fourcc('P', 'W', 'C', '1') /* pwc older webcam */
-#define <link linkend="V4L2-PIX-FMT-PWC2">V4L2_PIX_FMT_PWC2</link> v4l2_fourcc('P', 'W', 'C', '2') /* pwc newer webcam */
-#define <link linkend="V4L2-PIX-FMT-ET61X251">V4L2_PIX_FMT_ET61X251</link> v4l2_fourcc('E', '6', '2', '5') /* ET61X251 compression */
-#define <link linkend="V4L2-PIX-FMT-SPCA501">V4L2_PIX_FMT_SPCA501</link> v4l2_fourcc('S', '5', '0', '1') /* YUYV per line */
-#define <link linkend="V4L2-PIX-FMT-SPCA505">V4L2_PIX_FMT_SPCA505</link> v4l2_fourcc('S', '5', '0', '5') /* YYUV per line */
-#define <link linkend="V4L2-PIX-FMT-SPCA508">V4L2_PIX_FMT_SPCA508</link> v4l2_fourcc('S', '5', '0', '8') /* YUVY per line */
-#define <link linkend="V4L2-PIX-FMT-SPCA561">V4L2_PIX_FMT_SPCA561</link> v4l2_fourcc('S', '5', '6', '1') /* compressed GBRG bayer */
-#define <link linkend="V4L2-PIX-FMT-PAC207">V4L2_PIX_FMT_PAC207</link> v4l2_fourcc('P', '2', '0', '7') /* compressed BGGR bayer */
-#define <link linkend="V4L2-PIX-FMT-MR97310A">V4L2_PIX_FMT_MR97310A</link> v4l2_fourcc('M', '3', '1', '0') /* compressed BGGR bayer */
-#define <link linkend="V4L2-PIX-FMT-SN9C2028">V4L2_PIX_FMT_SN9C2028</link> v4l2_fourcc('S', 'O', 'N', 'X') /* compressed GBRG bayer */
-#define <link linkend="V4L2-PIX-FMT-SQ905C">V4L2_PIX_FMT_SQ905C</link> v4l2_fourcc('9', '0', '5', 'C') /* compressed RGGB bayer */
-#define <link linkend="V4L2-PIX-FMT-PJPG">V4L2_PIX_FMT_PJPG</link> v4l2_fourcc('P', 'J', 'P', 'G') /* Pixart 73xx JPEG */
-#define <link linkend="V4L2-PIX-FMT-OV511">V4L2_PIX_FMT_OV511</link> v4l2_fourcc('O', '5', '1', '1') /* ov511 JPEG */
-#define <link linkend="V4L2-PIX-FMT-OV518">V4L2_PIX_FMT_OV518</link> v4l2_fourcc('O', '5', '1', '8') /* ov518 JPEG */
-#define <link linkend="V4L2-PIX-FMT-STV0680">V4L2_PIX_FMT_STV0680</link> v4l2_fourcc('S', '6', '8', '0') /* stv0680 bayer */
-#define <link linkend="V4L2-PIX-FMT-TM6000">V4L2_PIX_FMT_TM6000</link> v4l2_fourcc('T', 'M', '6', '0') /* tm5600/tm60x0 */
-#define <link linkend="V4L2-PIX-FMT-CIT-YYVYUY">V4L2_PIX_FMT_CIT_YYVYUY</link> v4l2_fourcc('C', 'I', 'T', 'V') /* one line of Y then 1 line of VYUY */
-#define <link linkend="V4L2-PIX-FMT-KONICA420">V4L2_PIX_FMT_KONICA420</link> v4l2_fourcc('K', 'O', 'N', 'I') /* YUV420 planar in blocks of 256 pixels */
-
-/*
- * F O R M A T E N U M E R A T I O N
- */
-struct <link linkend="v4l2-fmtdesc">v4l2_fmtdesc</link> {
- __u32 index; /* Format number */
- enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type; /* buffer type */
- __u32 flags;
- __u8 description[32]; /* Description string */
- __u32 pixelformat; /* Format fourcc */
- __u32 reserved[4];
-};
-
-#define V4L2_FMT_FLAG_COMPRESSED 0x0001
-#define V4L2_FMT_FLAG_EMULATED 0x0002
-
-#if 1
- /* Experimental Frame Size and frame rate enumeration */
-/*
- * F R A M E S I Z E E N U M E R A T I O N
- */
-enum <link linkend="v4l2-frmsizetypes">v4l2_frmsizetypes</link> {
- V4L2_FRMSIZE_TYPE_DISCRETE = 1,
- V4L2_FRMSIZE_TYPE_CONTINUOUS = 2,
- V4L2_FRMSIZE_TYPE_STEPWISE = 3,
-};
-
-struct <link linkend="v4l2-frmsize-discrete">v4l2_frmsize_discrete</link> {
- __u32 width; /* Frame width [pixel] */
- __u32 height; /* Frame height [pixel] */
-};
-
-struct <link linkend="v4l2-frmsize-stepwise">v4l2_frmsize_stepwise</link> {
- __u32 min_width; /* Minimum frame width [pixel] */
- __u32 max_width; /* Maximum frame width [pixel] */
- __u32 step_width; /* Frame width step size [pixel] */
- __u32 min_height; /* Minimum frame height [pixel] */
- __u32 max_height; /* Maximum frame height [pixel] */
- __u32 step_height; /* Frame height step size [pixel] */
-};
-
-struct <link linkend="v4l2-frmsizeenum">v4l2_frmsizeenum</link> {
- __u32 index; /* Frame size number */
- __u32 pixel_format; /* Pixel format */
- __u32 type; /* Frame size type the device supports. */
-
- union { /* Frame size */
- struct <link linkend="v4l2-frmsize-discrete">v4l2_frmsize_discrete</link> discrete;
- struct <link linkend="v4l2-frmsize-stepwise">v4l2_frmsize_stepwise</link> stepwise;
- };
-
- __u32 reserved[2]; /* Reserved space for future use */
-};
-
-/*
- * F R A M E R A T E E N U M E R A T I O N
- */
-enum <link linkend="v4l2-frmivaltypes">v4l2_frmivaltypes</link> {
- V4L2_FRMIVAL_TYPE_DISCRETE = 1,
- V4L2_FRMIVAL_TYPE_CONTINUOUS = 2,
- V4L2_FRMIVAL_TYPE_STEPWISE = 3,
-};
-
-struct <link linkend="v4l2-frmival-stepwise">v4l2_frmival_stepwise</link> {
- struct <link linkend="v4l2-fract">v4l2_fract</link> min; /* Minimum frame interval [s] */
- struct <link linkend="v4l2-fract">v4l2_fract</link> max; /* Maximum frame interval [s] */
- struct <link linkend="v4l2-fract">v4l2_fract</link> step; /* Frame interval step size [s] */
-};
-
-struct <link linkend="v4l2-frmivalenum">v4l2_frmivalenum</link> {
- __u32 index; /* Frame format index */
- __u32 pixel_format; /* Pixel format */
- __u32 width; /* Frame width */
- __u32 height; /* Frame height */
- __u32 type; /* Frame interval type the device supports. */
-
- union { /* Frame interval */
- struct <link linkend="v4l2-fract">v4l2_fract</link> discrete;
- struct <link linkend="v4l2-frmival-stepwise">v4l2_frmival_stepwise</link> stepwise;
- };
-
- __u32 reserved[2]; /* Reserved space for future use */
-};
-#endif
-
-/*
- * T I M E C O D E
- */
-struct <link linkend="v4l2-timecode">v4l2_timecode</link> {
- __u32 type;
- __u32 flags;
- __u8 frames;
- __u8 seconds;
- __u8 minutes;
- __u8 hours;
- __u8 userbits[4];
-};
-
-/* Type */
-#define V4L2_TC_TYPE_24FPS 1
-#define V4L2_TC_TYPE_25FPS 2
-#define V4L2_TC_TYPE_30FPS 3
-#define V4L2_TC_TYPE_50FPS 4
-#define V4L2_TC_TYPE_60FPS 5
-
-/* Flags */
-#define V4L2_TC_FLAG_DROPFRAME 0x0001 /* "drop-frame" mode */
-#define V4L2_TC_FLAG_COLORFRAME 0x0002
-#define V4L2_TC_USERBITS_field 0x000C
-#define V4L2_TC_USERBITS_USERDEFINED 0x0000
-#define V4L2_TC_USERBITS_8BITCHARS 0x0008
-/* The above is based on SMPTE timecodes */
-
-struct <link linkend="v4l2-jpegcompression">v4l2_jpegcompression</link> {
- int quality;
-
- int APPn; /* Number of APP segment to be written,
- * must be 0..15 */
- int APP_len; /* Length of data in JPEG APPn segment */
- char APP_data[60]; /* Data in the JPEG APPn segment. */
-
- int COM_len; /* Length of data in JPEG COM segment */
- char COM_data[60]; /* Data in JPEG COM segment */
-
- __u32 jpeg_markers; /* Which markers should go into the JPEG
- * output. Unless you exactly know what
- * you do, leave them untouched.
- * Inluding less markers will make the
- * resulting code smaller, but there will
- * be fewer applications which can read it.
- * The presence of the APP and COM marker
- * is influenced by APP_len and COM_len
- * ONLY, not by this property! */
-
-#define V4L2_JPEG_MARKER_DHT (1<<3) /* Define Huffman Tables */
-#define V4L2_JPEG_MARKER_DQT (1<<4) /* Define Quantization Tables */
-#define V4L2_JPEG_MARKER_DRI (1<<5) /* Define Restart Interval */
-#define V4L2_JPEG_MARKER_COM (1<<6) /* Comment segment */
-#define V4L2_JPEG_MARKER_APP (1<<7) /* App segment, driver will
- * allways use APP0 */
-};
-
-/*
- * M E M O R Y - M A P P I N G B U F F E R S
- */
-struct <link linkend="v4l2-requestbuffers">v4l2_requestbuffers</link> {
- __u32 count;
- enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type;
- enum <link linkend="v4l2-memory">v4l2_memory</link> memory;
- __u32 reserved[2];
-};
-
-/**
- * struct <link linkend="v4l2-plane">v4l2_plane</link> - plane info for multi-planar buffers
- * @bytesused: number of bytes occupied by data in the plane (payload)
- * @length: size of this plane (NOT the payload) in bytes
- * @mem_offset: when memory in the associated struct <link linkend="v4l2-buffer">v4l2_buffer</link> is
- * V4L2_MEMORY_MMAP, equals the offset from the start of
- * the device memory for this plane (or is a "cookie" that
- * should be passed to mmap() called on the video node)
- * @userptr: when memory is V4L2_MEMORY_USERPTR, a userspace pointer
- * pointing to this plane
- * @data_offset: offset in the plane to the start of data; usually 0,
- * unless there is a header in front of the data
- *
- * Multi-planar buffers consist of one or more planes, e.g. an YCbCr buffer
- * with two planes can have one plane for Y, and another for interleaved CbCr
- * components. Each plane can reside in a separate memory buffer, or even in
- * a completely separate memory node (e.g. in embedded devices).
- */
-struct <link linkend="v4l2-plane">v4l2_plane</link> {
- __u32 bytesused;
- __u32 length;
- union {
- __u32 mem_offset;
- unsigned long userptr;
- } m;
- __u32 data_offset;
- __u32 reserved[11];
-};
-
-/**
- * struct <link linkend="v4l2-buffer">v4l2_buffer</link> - video buffer info
- * @index: id number of the buffer
- * @type: buffer type (type == *_MPLANE for multiplanar buffers)
- * @bytesused: number of bytes occupied by data in the buffer (payload);
- * unused (set to 0) for multiplanar buffers
- * @flags: buffer informational flags
- * @field: field order of the image in the buffer
- * @timestamp: frame timestamp
- * @timecode: frame timecode
- * @sequence: sequence count of this frame
- * @memory: the method, in which the actual video data is passed
- * @offset: for non-multiplanar buffers with memory == V4L2_MEMORY_MMAP;
- * offset from the start of the device memory for this plane,
- * (or a "cookie" that should be passed to mmap() as offset)
- * @userptr: for non-multiplanar buffers with memory == V4L2_MEMORY_USERPTR;
- * a userspace pointer pointing to this buffer
- * @planes: for multiplanar buffers; userspace pointer to the array of plane
- * info structs for this buffer
- * @length: size in bytes of the buffer (NOT its payload) for single-plane
- * buffers (when type != *_MPLANE); number of elements in the
- * planes array for multi-plane buffers
- * @input: input number from which the video data has has been captured
- *
- * Contains data exchanged by application and driver using one of the Streaming
- * I/O methods.
- */
-struct <link linkend="v4l2-buffer">v4l2_buffer</link> {
- __u32 index;
- enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type;
- __u32 bytesused;
- __u32 flags;
- enum <link linkend="v4l2-field">v4l2_field</link> field;
- struct timeval timestamp;
- struct <link linkend="v4l2-timecode">v4l2_timecode</link> timecode;
- __u32 sequence;
-
- /* memory location */
- enum <link linkend="v4l2-memory">v4l2_memory</link> memory;
- union {
- __u32 offset;
- unsigned long userptr;
- struct <link linkend="v4l2-plane">v4l2_plane</link> *planes;
- } m;
- __u32 length;
- __u32 input;
- __u32 reserved;
-};
-
-/* Flags for 'flags' field */
-#define V4L2_BUF_FLAG_MAPPED 0x0001 /* Buffer is mapped (flag) */
-#define V4L2_BUF_FLAG_QUEUED 0x0002 /* Buffer is queued for processing */
-#define V4L2_BUF_FLAG_DONE 0x0004 /* Buffer is ready */
-#define V4L2_BUF_FLAG_KEYFRAME 0x0008 /* Image is a keyframe (I-frame) */
-#define V4L2_BUF_FLAG_PFRAME 0x0010 /* Image is a P-frame */
-#define V4L2_BUF_FLAG_BFRAME 0x0020 /* Image is a B-frame */
-/* Buffer is ready, but the data contained within is corrupted. */
-#define V4L2_BUF_FLAG_ERROR 0x0040
-#define V4L2_BUF_FLAG_TIMECODE 0x0100 /* timecode field is valid */
-#define V4L2_BUF_FLAG_INPUT 0x0200 /* input field is valid */
-
-/*
- * O V E R L A Y P R E V I E W
- */
-struct <link linkend="v4l2-framebuffer">v4l2_framebuffer</link> {
- __u32 capability;
- __u32 flags;
-/* FIXME: in theory we should pass something like PCI device + memory
- * region + offset instead of some physical address */
- void *base;
- struct <link linkend="v4l2-pix-format">v4l2_pix_format</link> fmt;
-};
-/* Flags for the 'capability' field. Read only */
-#define V4L2_FBUF_CAP_EXTERNOVERLAY 0x0001
-#define V4L2_FBUF_CAP_CHROMAKEY 0x0002
-#define V4L2_FBUF_CAP_LIST_CLIPPING 0x0004
-#define V4L2_FBUF_CAP_BITMAP_CLIPPING 0x0008
-#define V4L2_FBUF_CAP_LOCAL_ALPHA 0x0010
-#define V4L2_FBUF_CAP_GLOBAL_ALPHA 0x0020
-#define V4L2_FBUF_CAP_LOCAL_INV_ALPHA 0x0040
-#define V4L2_FBUF_CAP_SRC_CHROMAKEY 0x0080
-/* Flags for the 'flags' field. */
-#define V4L2_FBUF_FLAG_PRIMARY 0x0001
-#define V4L2_FBUF_FLAG_OVERLAY 0x0002
-#define V4L2_FBUF_FLAG_CHROMAKEY 0x0004
-#define V4L2_FBUF_FLAG_LOCAL_ALPHA 0x0008
-#define V4L2_FBUF_FLAG_GLOBAL_ALPHA 0x0010
-#define V4L2_FBUF_FLAG_LOCAL_INV_ALPHA 0x0020
-#define V4L2_FBUF_FLAG_SRC_CHROMAKEY 0x0040
-
-struct <link linkend="v4l2-clip">v4l2_clip</link> {
- struct <link linkend="v4l2-rect">v4l2_rect</link> c;
- struct <link linkend="v4l2-clip">v4l2_clip</link> __user *next;
-};
-
-struct <link linkend="v4l2-window">v4l2_window</link> {
- struct <link linkend="v4l2-rect">v4l2_rect</link> w;
- enum <link linkend="v4l2-field">v4l2_field</link> field;
- __u32 chromakey;
- struct <link linkend="v4l2-clip">v4l2_clip</link> __user *clips;
- __u32 clipcount;
- void __user *bitmap;
- __u8 global_alpha;
-};
-
-/*
- * C A P T U R E P A R A M E T E R S
- */
-struct <link linkend="v4l2-captureparm">v4l2_captureparm</link> {
- __u32 capability; /* Supported modes */
- __u32 capturemode; /* Current mode */
- struct <link linkend="v4l2-fract">v4l2_fract</link> timeperframe; /* Time per frame in .1us units */
- __u32 extendedmode; /* Driver-specific extensions */
- __u32 readbuffers; /* # of buffers for read */
- __u32 reserved[4];
-};
-
-/* Flags for 'capability' and 'capturemode' fields */
-#define V4L2_MODE_HIGHQUALITY 0x0001 /* High quality imaging mode */
-#define V4L2_CAP_TIMEPERFRAME 0x1000 /* timeperframe field is supported */
-
-struct <link linkend="v4l2-outputparm">v4l2_outputparm</link> {
- __u32 capability; /* Supported modes */
- __u32 outputmode; /* Current mode */
- struct <link linkend="v4l2-fract">v4l2_fract</link> timeperframe; /* Time per frame in seconds */
- __u32 extendedmode; /* Driver-specific extensions */
- __u32 writebuffers; /* # of buffers for write */
- __u32 reserved[4];
-};
-
-/*
- * I N P U T I M A G E C R O P P I N G
- */
-struct <link linkend="v4l2-cropcap">v4l2_cropcap</link> {
- enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type;
- struct <link linkend="v4l2-rect">v4l2_rect</link> bounds;
- struct <link linkend="v4l2-rect">v4l2_rect</link> defrect;
- struct <link linkend="v4l2-fract">v4l2_fract</link> pixelaspect;
-};
-
-struct <link linkend="v4l2-crop">v4l2_crop</link> {
- enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type;
- struct <link linkend="v4l2-rect">v4l2_rect</link> c;
-};
-
-/*
- * A N A L O G V I D E O S T A N D A R D
- */
-
-typedef __u64 v4l2_std_id;
-
-/* one bit for each */
-#define V4L2_STD_PAL_B ((v4l2_std_id)0x00000001)
-#define V4L2_STD_PAL_B1 ((v4l2_std_id)0x00000002)
-#define V4L2_STD_PAL_G ((v4l2_std_id)0x00000004)
-#define V4L2_STD_PAL_H ((v4l2_std_id)0x00000008)
-#define V4L2_STD_PAL_I ((v4l2_std_id)0x00000010)
-#define V4L2_STD_PAL_D ((v4l2_std_id)0x00000020)
-#define V4L2_STD_PAL_D1 ((v4l2_std_id)0x00000040)
-#define V4L2_STD_PAL_K ((v4l2_std_id)0x00000080)
-
-#define V4L2_STD_PAL_M ((v4l2_std_id)0x00000100)
-#define V4L2_STD_PAL_N ((v4l2_std_id)0x00000200)
-#define V4L2_STD_PAL_Nc ((v4l2_std_id)0x00000400)
-#define V4L2_STD_PAL_60 ((v4l2_std_id)0x00000800)
-
-#define V4L2_STD_NTSC_M ((v4l2_std_id)0x00001000)
-#define V4L2_STD_NTSC_M_JP ((v4l2_std_id)0x00002000)
-#define V4L2_STD_NTSC_443 ((v4l2_std_id)0x00004000)
-#define V4L2_STD_NTSC_M_KR ((v4l2_std_id)0x00008000)
-
-#define V4L2_STD_SECAM_B ((v4l2_std_id)0x00010000)
-#define V4L2_STD_SECAM_D ((v4l2_std_id)0x00020000)
-#define V4L2_STD_SECAM_G ((v4l2_std_id)0x00040000)
-#define V4L2_STD_SECAM_H ((v4l2_std_id)0x00080000)
-#define V4L2_STD_SECAM_K ((v4l2_std_id)0x00100000)
-#define V4L2_STD_SECAM_K1 ((v4l2_std_id)0x00200000)
-#define V4L2_STD_SECAM_L ((v4l2_std_id)0x00400000)
-#define V4L2_STD_SECAM_LC ((v4l2_std_id)0x00800000)
-
-/* ATSC/HDTV */
-#define V4L2_STD_ATSC_8_VSB ((v4l2_std_id)0x01000000)
-#define V4L2_STD_ATSC_16_VSB ((v4l2_std_id)0x02000000)
-
-/* FIXME:
- Although std_id is 64 bits, there is an issue on PPC32 architecture that
- makes switch(__u64) to break. So, there's a hack on v4l2-common.c rounding
- this value to 32 bits.
- As, currently, the max value is for V4L2_STD_ATSC_16_VSB (30 bits wide),
- it should work fine. However, if needed to add more than two standards,
- v4l2-common.c should be fixed.
- */
-
-/* some merged standards */
-#define V4L2_STD_MN (V4L2_STD_PAL_M|V4L2_STD_PAL_N|V4L2_STD_PAL_Nc|V4L2_STD_NTSC)
-#define V4L2_STD_B (V4L2_STD_PAL_B|V4L2_STD_PAL_B1|V4L2_STD_SECAM_B)
-#define V4L2_STD_GH (V4L2_STD_PAL_G|V4L2_STD_PAL_H|V4L2_STD_SECAM_G|V4L2_STD_SECAM_H)
-#define V4L2_STD_DK (V4L2_STD_PAL_DK|V4L2_STD_SECAM_DK)
-
-/* some common needed stuff */
-#define V4L2_STD_PAL_BG (V4L2_STD_PAL_B |\
- V4L2_STD_PAL_B1 |\
- V4L2_STD_PAL_G)
-#define V4L2_STD_PAL_DK (V4L2_STD_PAL_D |\
- V4L2_STD_PAL_D1 |\
- V4L2_STD_PAL_K)
-#define V4L2_STD_PAL (V4L2_STD_PAL_BG |\
- V4L2_STD_PAL_DK |\
- V4L2_STD_PAL_H |\
- V4L2_STD_PAL_I)
-#define V4L2_STD_NTSC (V4L2_STD_NTSC_M |\
- V4L2_STD_NTSC_M_JP |\
- V4L2_STD_NTSC_M_KR)
-#define V4L2_STD_SECAM_DK (V4L2_STD_SECAM_D |\
- V4L2_STD_SECAM_K |\
- V4L2_STD_SECAM_K1)
-#define V4L2_STD_SECAM (V4L2_STD_SECAM_B |\
- V4L2_STD_SECAM_G |\
- V4L2_STD_SECAM_H |\
- V4L2_STD_SECAM_DK |\
- V4L2_STD_SECAM_L |\
- V4L2_STD_SECAM_LC)
-
-#define V4L2_STD_525_60 (V4L2_STD_PAL_M |\
- V4L2_STD_PAL_60 |\
- V4L2_STD_NTSC |\
- V4L2_STD_NTSC_443)
-#define V4L2_STD_625_50 (V4L2_STD_PAL |\
- V4L2_STD_PAL_N |\
- V4L2_STD_PAL_Nc |\
- V4L2_STD_SECAM)
-#define V4L2_STD_ATSC (V4L2_STD_ATSC_8_VSB |\
- V4L2_STD_ATSC_16_VSB)
-
-#define V4L2_STD_UNKNOWN 0
-#define V4L2_STD_ALL (V4L2_STD_525_60 |\
- V4L2_STD_625_50)
-
-struct <link linkend="v4l2-standard">v4l2_standard</link> {
- __u32 index;
- v4l2_std_id id;
- __u8 name[24];
- struct <link linkend="v4l2-fract">v4l2_fract</link> frameperiod; /* Frames, not fields */
- __u32 framelines;
- __u32 reserved[4];
-};
-
-/*
- * V I D E O T I M I N G S D V P R E S E T
- */
-struct <link linkend="v4l2-dv-preset">v4l2_dv_preset</link> {
- __u32 preset;
- __u32 reserved[4];
-};
-
-/*
- * D V P R E S E T S E N U M E R A T I O N
- */
-struct <link linkend="v4l2-dv-enum-preset">v4l2_dv_enum_preset</link> {
- __u32 index;
- __u32 preset;
- __u8 name[32]; /* Name of the preset timing */
- __u32 width;
- __u32 height;
- __u32 reserved[4];
-};
-
-/*
- * D V P R E S E T V A L U E S
- */
-#define V4L2_DV_INVALID 0
-#define V4L2_DV_480P59_94 1 /* BT.1362 */
-#define V4L2_DV_576P50 2 /* BT.1362 */
-#define V4L2_DV_720P24 3 /* SMPTE 296M */
-#define V4L2_DV_720P25 4 /* SMPTE 296M */
-#define V4L2_DV_720P30 5 /* SMPTE 296M */
-#define V4L2_DV_720P50 6 /* SMPTE 296M */
-#define V4L2_DV_720P59_94 7 /* SMPTE 274M */
-#define V4L2_DV_720P60 8 /* SMPTE 274M/296M */
-#define V4L2_DV_1080I29_97 9 /* BT.1120/ SMPTE 274M */
-#define V4L2_DV_1080I30 10 /* BT.1120/ SMPTE 274M */
-#define V4L2_DV_1080I25 11 /* BT.1120 */
-#define V4L2_DV_1080I50 12 /* SMPTE 296M */
-#define V4L2_DV_1080I60 13 /* SMPTE 296M */
-#define V4L2_DV_1080P24 14 /* SMPTE 296M */
-#define V4L2_DV_1080P25 15 /* SMPTE 296M */
-#define V4L2_DV_1080P30 16 /* SMPTE 296M */
-#define V4L2_DV_1080P50 17 /* BT.1120 */
-#define V4L2_DV_1080P60 18 /* BT.1120 */
-
-/*
- * D V B T T I M I N G S
- */
-
-/* BT.656/BT.1120 timing data */
-struct <link linkend="v4l2-bt-timings">v4l2_bt_timings</link> {
- __u32 width; /* width in pixels */
- __u32 height; /* height in lines */
- __u32 interlaced; /* Interlaced or progressive */
- __u32 polarities; /* Positive or negative polarity */
- __u64 pixelclock; /* Pixel clock in HZ. Ex. 74.25MHz->74250000 */
- __u32 hfrontporch; /* Horizpontal front porch in pixels */
- __u32 hsync; /* Horizontal Sync length in pixels */
- __u32 hbackporch; /* Horizontal back porch in pixels */
- __u32 vfrontporch; /* Vertical front porch in pixels */
- __u32 vsync; /* Vertical Sync length in lines */
- __u32 vbackporch; /* Vertical back porch in lines */
- __u32 il_vfrontporch; /* Vertical front porch for bottom field of
- * interlaced field formats
- */
- __u32 il_vsync; /* Vertical sync length for bottom field of
- * interlaced field formats
- */
- __u32 il_vbackporch; /* Vertical back porch for bottom field of
- * interlaced field formats
- */
- __u32 reserved[16];
-} __attribute__ ((packed));
-
-/* Interlaced or progressive format */
-#define V4L2_DV_PROGRESSIVE 0
-#define V4L2_DV_INTERLACED 1
-
-/* Polarities. If bit is not set, it is assumed to be negative polarity */
-#define V4L2_DV_VSYNC_POS_POL 0x00000001
-#define V4L2_DV_HSYNC_POS_POL 0x00000002
-
-
-/* DV timings */
-struct <link linkend="v4l2-dv-timings">v4l2_dv_timings</link> {
- __u32 type;
- union {
- struct <link linkend="v4l2-bt-timings">v4l2_bt_timings</link> bt;
- __u32 reserved[32];
- };
-} __attribute__ ((packed));
-
-/* Values for the type field */
-#define V4L2_DV_BT_656_1120 0 /* BT.656/1120 timing type */
-
-/*
- * V I D E O I N P U T S
- */
-struct <link linkend="v4l2-input">v4l2_input</link> {
- __u32 index; /* Which input */
- __u8 name[32]; /* Label */
- __u32 type; /* Type of input */
- __u32 audioset; /* Associated audios (bitfield) */
- __u32 tuner; /* Associated tuner */
- v4l2_std_id std;
- __u32 status;
- __u32 capabilities;
- __u32 reserved[3];
-};
-
-/* Values for the 'type' field */
-#define V4L2_INPUT_TYPE_TUNER 1
-#define V4L2_INPUT_TYPE_CAMERA 2
-
-/* field 'status' - general */
-#define V4L2_IN_ST_NO_POWER 0x00000001 /* Attached device is off */
-#define V4L2_IN_ST_NO_SIGNAL 0x00000002
-#define V4L2_IN_ST_NO_COLOR 0x00000004
-
-/* field 'status' - sensor orientation */
-/* If sensor is mounted upside down set both bits */
-#define V4L2_IN_ST_HFLIP 0x00000010 /* Frames are flipped horizontally */
-#define V4L2_IN_ST_VFLIP 0x00000020 /* Frames are flipped vertically */
-
-/* field 'status' - analog */
-#define V4L2_IN_ST_NO_H_LOCK 0x00000100 /* No horizontal sync lock */
-#define V4L2_IN_ST_COLOR_KILL 0x00000200 /* Color killer is active */
-
-/* field 'status' - digital */
-#define V4L2_IN_ST_NO_SYNC 0x00010000 /* No synchronization lock */
-#define V4L2_IN_ST_NO_EQU 0x00020000 /* No equalizer lock */
-#define V4L2_IN_ST_NO_CARRIER 0x00040000 /* Carrier recovery failed */
-
-/* field 'status' - VCR and set-top box */
-#define V4L2_IN_ST_MACROVISION 0x01000000 /* Macrovision detected */
-#define V4L2_IN_ST_NO_ACCESS 0x02000000 /* Conditional access denied */
-#define V4L2_IN_ST_VTR 0x04000000 /* VTR time constant */
-
-/* capabilities flags */
-#define V4L2_IN_CAP_PRESETS 0x00000001 /* Supports S_DV_PRESET */
-#define V4L2_IN_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports S_DV_TIMINGS */
-#define V4L2_IN_CAP_STD 0x00000004 /* Supports S_STD */
-
-/*
- * V I D E O O U T P U T S
- */
-struct <link linkend="v4l2-output">v4l2_output</link> {
- __u32 index; /* Which output */
- __u8 name[32]; /* Label */
- __u32 type; /* Type of output */
- __u32 audioset; /* Associated audios (bitfield) */
- __u32 modulator; /* Associated modulator */
- v4l2_std_id std;
- __u32 capabilities;
- __u32 reserved[3];
-};
-/* Values for the 'type' field */
-#define V4L2_OUTPUT_TYPE_MODULATOR 1
-#define V4L2_OUTPUT_TYPE_ANALOG 2
-#define V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY 3
-
-/* capabilities flags */
-#define V4L2_OUT_CAP_PRESETS 0x00000001 /* Supports S_DV_PRESET */
-#define V4L2_OUT_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports S_DV_TIMINGS */
-#define V4L2_OUT_CAP_STD 0x00000004 /* Supports S_STD */
-
-/*
- * C O N T R O L S
- */
-struct <link linkend="v4l2-control">v4l2_control</link> {
- __u32 id;
- __s32 value;
-};
-
-struct <link linkend="v4l2-ext-control">v4l2_ext_control</link> {
- __u32 id;
- __u32 size;
- __u32 reserved2[1];
- union {
- __s32 value;
- __s64 value64;
- char *string;
- };
-} __attribute__ ((packed));
-
-struct <link linkend="v4l2-ext-controls">v4l2_ext_controls</link> {
- __u32 ctrl_class;
- __u32 count;
- __u32 error_idx;
- __u32 reserved[2];
- struct <link linkend="v4l2-ext-control">v4l2_ext_control</link> *controls;
-};
-
-/* Values for ctrl_class field */
-#define V4L2_CTRL_CLASS_USER 0x00980000 /* Old-style 'user' controls */
-#define V4L2_CTRL_CLASS_MPEG 0x00990000 /* MPEG-compression controls */
-#define V4L2_CTRL_CLASS_CAMERA 0x009a0000 /* Camera class controls */
-#define V4L2_CTRL_CLASS_FM_TX 0x009b0000 /* FM Modulator control class */
-
-#define V4L2_CTRL_ID_MASK (0x0fffffff)
-#define V4L2_CTRL_ID2CLASS(id) ((id) & 0x0fff0000UL)
-#define V4L2_CTRL_DRIVER_PRIV(id) (((id) & 0xffff) >= 0x1000)
-
-enum <link linkend="v4l2-ctrl-type">v4l2_ctrl_type</link> {
- V4L2_CTRL_TYPE_INTEGER = 1,
- V4L2_CTRL_TYPE_BOOLEAN = 2,
- V4L2_CTRL_TYPE_MENU = 3,
- V4L2_CTRL_TYPE_BUTTON = 4,
- V4L2_CTRL_TYPE_INTEGER64 = 5,
- V4L2_CTRL_TYPE_CTRL_CLASS = 6,
- V4L2_CTRL_TYPE_STRING = 7,
-};
-
-/* Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
-struct <link linkend="v4l2-queryctrl">v4l2_queryctrl</link> {
- __u32 id;
- enum <link linkend="v4l2-ctrl-type">v4l2_ctrl_type</link> type;
- __u8 name[32]; /* Whatever */
- __s32 minimum; /* Note signedness */
- __s32 maximum;
- __s32 step;
- __s32 default_value;
- __u32 flags;
- __u32 reserved[2];
-};
-
-/* Used in the VIDIOC_QUERYMENU ioctl for querying menu items */
-struct <link linkend="v4l2-querymenu">v4l2_querymenu</link> {
- __u32 id;
- __u32 index;
- __u8 name[32]; /* Whatever */
- __u32 reserved;
-};
-
-/* Control flags */
-#define V4L2_CTRL_FLAG_DISABLED 0x0001
-#define V4L2_CTRL_FLAG_GRABBED 0x0002
-#define V4L2_CTRL_FLAG_READ_ONLY 0x0004
-#define V4L2_CTRL_FLAG_UPDATE 0x0008
-#define V4L2_CTRL_FLAG_INACTIVE 0x0010
-#define V4L2_CTRL_FLAG_SLIDER 0x0020
-#define V4L2_CTRL_FLAG_WRITE_ONLY 0x0040
-
-/* Query flag, to be ORed with the control ID */
-#define V4L2_CTRL_FLAG_NEXT_CTRL 0x80000000
-
-/* User-class control IDs defined by V4L2 */
-#define V4L2_CID_BASE (V4L2_CTRL_CLASS_USER | 0x900)
-#define V4L2_CID_USER_BASE V4L2_CID_BASE
-/* IDs reserved for driver specific controls */
-#define V4L2_CID_PRIVATE_BASE 0x08000000
-
-#define V4L2_CID_USER_CLASS (V4L2_CTRL_CLASS_USER | 1)
-#define V4L2_CID_BRIGHTNESS (V4L2_CID_BASE+0)
-#define V4L2_CID_CONTRAST (V4L2_CID_BASE+1)
-#define V4L2_CID_SATURATION (V4L2_CID_BASE+2)
-#define V4L2_CID_HUE (V4L2_CID_BASE+3)
-#define V4L2_CID_AUDIO_VOLUME (V4L2_CID_BASE+5)
-#define V4L2_CID_AUDIO_BALANCE (V4L2_CID_BASE+6)
-#define V4L2_CID_AUDIO_BASS (V4L2_CID_BASE+7)
-#define V4L2_CID_AUDIO_TREBLE (V4L2_CID_BASE+8)
-#define V4L2_CID_AUDIO_MUTE (V4L2_CID_BASE+9)
-#define V4L2_CID_AUDIO_LOUDNESS (V4L2_CID_BASE+10)
-#define V4L2_CID_BLACK_LEVEL (V4L2_CID_BASE+11) /* Deprecated */
-#define V4L2_CID_AUTO_WHITE_BALANCE (V4L2_CID_BASE+12)
-#define V4L2_CID_DO_WHITE_BALANCE (V4L2_CID_BASE+13)
-#define V4L2_CID_RED_BALANCE (V4L2_CID_BASE+14)
-#define V4L2_CID_BLUE_BALANCE (V4L2_CID_BASE+15)
-#define V4L2_CID_GAMMA (V4L2_CID_BASE+16)
-#define V4L2_CID_WHITENESS (V4L2_CID_GAMMA) /* Deprecated */
-#define V4L2_CID_EXPOSURE (V4L2_CID_BASE+17)
-#define V4L2_CID_AUTOGAIN (V4L2_CID_BASE+18)
-#define V4L2_CID_GAIN (V4L2_CID_BASE+19)
-#define V4L2_CID_HFLIP (V4L2_CID_BASE+20)
-#define V4L2_CID_VFLIP (V4L2_CID_BASE+21)
-
-/* Deprecated; use V4L2_CID_PAN_RESET and V4L2_CID_TILT_RESET */
-#define V4L2_CID_HCENTER (V4L2_CID_BASE+22)
-#define V4L2_CID_VCENTER (V4L2_CID_BASE+23)
-
-#define V4L2_CID_POWER_LINE_FREQUENCY (V4L2_CID_BASE+24)
-enum <link linkend="v4l2-power-line-frequency">v4l2_power_line_frequency</link> {
- V4L2_CID_POWER_LINE_FREQUENCY_DISABLED = 0,
- V4L2_CID_POWER_LINE_FREQUENCY_50HZ = 1,
- V4L2_CID_POWER_LINE_FREQUENCY_60HZ = 2,
-};
-#define V4L2_CID_HUE_AUTO (V4L2_CID_BASE+25)
-#define V4L2_CID_WHITE_BALANCE_TEMPERATURE (V4L2_CID_BASE+26)
-#define V4L2_CID_SHARPNESS (V4L2_CID_BASE+27)
-#define V4L2_CID_BACKLIGHT_COMPENSATION (V4L2_CID_BASE+28)
-#define V4L2_CID_CHROMA_AGC (V4L2_CID_BASE+29)
-#define V4L2_CID_COLOR_KILLER (V4L2_CID_BASE+30)
-#define V4L2_CID_COLORFX (V4L2_CID_BASE+31)
-enum <link linkend="v4l2-colorfx">v4l2_colorfx</link> {
- V4L2_COLORFX_NONE = 0,
- V4L2_COLORFX_BW = 1,
- V4L2_COLORFX_SEPIA = 2,
- V4L2_COLORFX_NEGATIVE = 3,
- V4L2_COLORFX_EMBOSS = 4,
- V4L2_COLORFX_SKETCH = 5,
- V4L2_COLORFX_SKY_BLUE = 6,
- V4L2_COLORFX_GRASS_GREEN = 7,
- V4L2_COLORFX_SKIN_WHITEN = 8,
- V4L2_COLORFX_VIVID = 9,
-};
-#define V4L2_CID_AUTOBRIGHTNESS (V4L2_CID_BASE+32)
-#define V4L2_CID_BAND_STOP_FILTER (V4L2_CID_BASE+33)
-
-#define V4L2_CID_ROTATE (V4L2_CID_BASE+34)
-#define V4L2_CID_BG_COLOR (V4L2_CID_BASE+35)
-
-#define V4L2_CID_CHROMA_GAIN (V4L2_CID_BASE+36)
-
-#define V4L2_CID_ILLUMINATORS_1 (V4L2_CID_BASE+37)
-#define V4L2_CID_ILLUMINATORS_2 (V4L2_CID_BASE+38)
-
-/* last CID + 1 */
-#define V4L2_CID_LASTP1 (V4L2_CID_BASE+39)
-
-/* MPEG-class control IDs defined by V4L2 */
-#define V4L2_CID_MPEG_BASE (V4L2_CTRL_CLASS_MPEG | 0x900)
-#define V4L2_CID_MPEG_CLASS (V4L2_CTRL_CLASS_MPEG | 1)
-
-/* MPEG streams */
-#define V4L2_CID_MPEG_STREAM_TYPE (V4L2_CID_MPEG_BASE+0)
-enum <link linkend="v4l2-mpeg-stream-type">v4l2_mpeg_stream_type</link> {
- V4L2_MPEG_STREAM_TYPE_MPEG2_PS = 0, /* MPEG-2 program stream */
- V4L2_MPEG_STREAM_TYPE_MPEG2_TS = 1, /* MPEG-2 transport stream */
- V4L2_MPEG_STREAM_TYPE_MPEG1_SS = 2, /* MPEG-1 system stream */
- V4L2_MPEG_STREAM_TYPE_MPEG2_DVD = 3, /* MPEG-2 DVD-compatible stream */
- V4L2_MPEG_STREAM_TYPE_MPEG1_VCD = 4, /* MPEG-1 VCD-compatible stream */
- V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD = 5, /* MPEG-2 SVCD-compatible stream */
-};
-#define V4L2_CID_MPEG_STREAM_PID_PMT (V4L2_CID_MPEG_BASE+1)
-#define V4L2_CID_MPEG_STREAM_PID_AUDIO (V4L2_CID_MPEG_BASE+2)
-#define V4L2_CID_MPEG_STREAM_PID_VIDEO (V4L2_CID_MPEG_BASE+3)
-#define V4L2_CID_MPEG_STREAM_PID_PCR (V4L2_CID_MPEG_BASE+4)
-#define V4L2_CID_MPEG_STREAM_PES_ID_AUDIO (V4L2_CID_MPEG_BASE+5)
-#define V4L2_CID_MPEG_STREAM_PES_ID_VIDEO (V4L2_CID_MPEG_BASE+6)
-#define V4L2_CID_MPEG_STREAM_VBI_FMT (V4L2_CID_MPEG_BASE+7)
-enum <link linkend="v4l2-mpeg-stream-vbi-fmt">v4l2_mpeg_stream_vbi_fmt</link> {
- V4L2_MPEG_STREAM_VBI_FMT_NONE = 0, /* No VBI in the MPEG stream */
- V4L2_MPEG_STREAM_VBI_FMT_IVTV = 1, /* VBI in private packets, IVTV format */
-};
-
-/* MPEG audio */
-#define V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ (V4L2_CID_MPEG_BASE+100)
-enum <link linkend="v4l2-mpeg-audio-sampling-freq">v4l2_mpeg_audio_sampling_freq</link> {
- V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100 = 0,
- V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000 = 1,
- V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000 = 2,
-};
-#define V4L2_CID_MPEG_AUDIO_ENCODING (V4L2_CID_MPEG_BASE+101)
-enum <link linkend="v4l2-mpeg-audio-encoding">v4l2_mpeg_audio_encoding</link> {
- V4L2_MPEG_AUDIO_ENCODING_LAYER_1 = 0,
- V4L2_MPEG_AUDIO_ENCODING_LAYER_2 = 1,
- V4L2_MPEG_AUDIO_ENCODING_LAYER_3 = 2,
- V4L2_MPEG_AUDIO_ENCODING_AAC = 3,
- V4L2_MPEG_AUDIO_ENCODING_AC3 = 4,
-};
-#define V4L2_CID_MPEG_AUDIO_L1_BITRATE (V4L2_CID_MPEG_BASE+102)
-enum <link linkend="v4l2-mpeg-audio-l1-bitrate">v4l2_mpeg_audio_l1_bitrate</link> {
- V4L2_MPEG_AUDIO_L1_BITRATE_32K = 0,
- V4L2_MPEG_AUDIO_L1_BITRATE_64K = 1,
- V4L2_MPEG_AUDIO_L1_BITRATE_96K = 2,
- V4L2_MPEG_AUDIO_L1_BITRATE_128K = 3,
- V4L2_MPEG_AUDIO_L1_BITRATE_160K = 4,
- V4L2_MPEG_AUDIO_L1_BITRATE_192K = 5,
- V4L2_MPEG_AUDIO_L1_BITRATE_224K = 6,
- V4L2_MPEG_AUDIO_L1_BITRATE_256K = 7,
- V4L2_MPEG_AUDIO_L1_BITRATE_288K = 8,
- V4L2_MPEG_AUDIO_L1_BITRATE_320K = 9,
- V4L2_MPEG_AUDIO_L1_BITRATE_352K = 10,
- V4L2_MPEG_AUDIO_L1_BITRATE_384K = 11,
- V4L2_MPEG_AUDIO_L1_BITRATE_416K = 12,
- V4L2_MPEG_AUDIO_L1_BITRATE_448K = 13,
-};
-#define V4L2_CID_MPEG_AUDIO_L2_BITRATE (V4L2_CID_MPEG_BASE+103)
-enum <link linkend="v4l2-mpeg-audio-l2-bitrate">v4l2_mpeg_audio_l2_bitrate</link> {
- V4L2_MPEG_AUDIO_L2_BITRATE_32K = 0,
- V4L2_MPEG_AUDIO_L2_BITRATE_48K = 1,
- V4L2_MPEG_AUDIO_L2_BITRATE_56K = 2,
- V4L2_MPEG_AUDIO_L2_BITRATE_64K = 3,
- V4L2_MPEG_AUDIO_L2_BITRATE_80K = 4,
- V4L2_MPEG_AUDIO_L2_BITRATE_96K = 5,
- V4L2_MPEG_AUDIO_L2_BITRATE_112K = 6,
- V4L2_MPEG_AUDIO_L2_BITRATE_128K = 7,
- V4L2_MPEG_AUDIO_L2_BITRATE_160K = 8,
- V4L2_MPEG_AUDIO_L2_BITRATE_192K = 9,
- V4L2_MPEG_AUDIO_L2_BITRATE_224K = 10,
- V4L2_MPEG_AUDIO_L2_BITRATE_256K = 11,
- V4L2_MPEG_AUDIO_L2_BITRATE_320K = 12,
- V4L2_MPEG_AUDIO_L2_BITRATE_384K = 13,
-};
-#define V4L2_CID_MPEG_AUDIO_L3_BITRATE (V4L2_CID_MPEG_BASE+104)
-enum <link linkend="v4l2-mpeg-audio-l3-bitrate">v4l2_mpeg_audio_l3_bitrate</link> {
- V4L2_MPEG_AUDIO_L3_BITRATE_32K = 0,
- V4L2_MPEG_AUDIO_L3_BITRATE_40K = 1,
- V4L2_MPEG_AUDIO_L3_BITRATE_48K = 2,
- V4L2_MPEG_AUDIO_L3_BITRATE_56K = 3,
- V4L2_MPEG_AUDIO_L3_BITRATE_64K = 4,
- V4L2_MPEG_AUDIO_L3_BITRATE_80K = 5,
- V4L2_MPEG_AUDIO_L3_BITRATE_96K = 6,
- V4L2_MPEG_AUDIO_L3_BITRATE_112K = 7,
- V4L2_MPEG_AUDIO_L3_BITRATE_128K = 8,
- V4L2_MPEG_AUDIO_L3_BITRATE_160K = 9,
- V4L2_MPEG_AUDIO_L3_BITRATE_192K = 10,
- V4L2_MPEG_AUDIO_L3_BITRATE_224K = 11,
- V4L2_MPEG_AUDIO_L3_BITRATE_256K = 12,
- V4L2_MPEG_AUDIO_L3_BITRATE_320K = 13,
-};
-#define V4L2_CID_MPEG_AUDIO_MODE (V4L2_CID_MPEG_BASE+105)
-enum <link linkend="v4l2-mpeg-audio-mode">v4l2_mpeg_audio_mode</link> {
- V4L2_MPEG_AUDIO_MODE_STEREO = 0,
- V4L2_MPEG_AUDIO_MODE_JOINT_STEREO = 1,
- V4L2_MPEG_AUDIO_MODE_DUAL = 2,
- V4L2_MPEG_AUDIO_MODE_MONO = 3,
-};
-#define V4L2_CID_MPEG_AUDIO_MODE_EXTENSION (V4L2_CID_MPEG_BASE+106)
-enum <link linkend="v4l2-mpeg-audio-mode-extension">v4l2_mpeg_audio_mode_extension</link> {
- V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4 = 0,
- V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_8 = 1,
- V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_12 = 2,
- V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_16 = 3,
-};
-#define V4L2_CID_MPEG_AUDIO_EMPHASIS (V4L2_CID_MPEG_BASE+107)
-enum <link linkend="v4l2-mpeg-audio-emphasis">v4l2_mpeg_audio_emphasis</link> {
- V4L2_MPEG_AUDIO_EMPHASIS_NONE = 0,
- V4L2_MPEG_AUDIO_EMPHASIS_50_DIV_15_uS = 1,
- V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17 = 2,
-};
-#define V4L2_CID_MPEG_AUDIO_CRC (V4L2_CID_MPEG_BASE+108)
-enum <link linkend="v4l2-mpeg-audio-crc">v4l2_mpeg_audio_crc</link> {
- V4L2_MPEG_AUDIO_CRC_NONE = 0,
- V4L2_MPEG_AUDIO_CRC_CRC16 = 1,
-};
-#define V4L2_CID_MPEG_AUDIO_MUTE (V4L2_CID_MPEG_BASE+109)
-#define V4L2_CID_MPEG_AUDIO_AAC_BITRATE (V4L2_CID_MPEG_BASE+110)
-#define V4L2_CID_MPEG_AUDIO_AC3_BITRATE (V4L2_CID_MPEG_BASE+111)
-enum <link linkend="v4l2-mpeg-audio-ac3-bitrate">v4l2_mpeg_audio_ac3_bitrate</link> {
- V4L2_MPEG_AUDIO_AC3_BITRATE_32K = 0,
- V4L2_MPEG_AUDIO_AC3_BITRATE_40K = 1,
- V4L2_MPEG_AUDIO_AC3_BITRATE_48K = 2,
- V4L2_MPEG_AUDIO_AC3_BITRATE_56K = 3,
- V4L2_MPEG_AUDIO_AC3_BITRATE_64K = 4,
- V4L2_MPEG_AUDIO_AC3_BITRATE_80K = 5,
- V4L2_MPEG_AUDIO_AC3_BITRATE_96K = 6,
- V4L2_MPEG_AUDIO_AC3_BITRATE_112K = 7,
- V4L2_MPEG_AUDIO_AC3_BITRATE_128K = 8,
- V4L2_MPEG_AUDIO_AC3_BITRATE_160K = 9,
- V4L2_MPEG_AUDIO_AC3_BITRATE_192K = 10,
- V4L2_MPEG_AUDIO_AC3_BITRATE_224K = 11,
- V4L2_MPEG_AUDIO_AC3_BITRATE_256K = 12,
- V4L2_MPEG_AUDIO_AC3_BITRATE_320K = 13,
- V4L2_MPEG_AUDIO_AC3_BITRATE_384K = 14,
- V4L2_MPEG_AUDIO_AC3_BITRATE_448K = 15,
- V4L2_MPEG_AUDIO_AC3_BITRATE_512K = 16,
- V4L2_MPEG_AUDIO_AC3_BITRATE_576K = 17,
- V4L2_MPEG_AUDIO_AC3_BITRATE_640K = 18,
-};
-
-/* MPEG video */
-#define V4L2_CID_MPEG_VIDEO_ENCODING (V4L2_CID_MPEG_BASE+200)
-enum <link linkend="v4l2-mpeg-video-encoding">v4l2_mpeg_video_encoding</link> {
- V4L2_MPEG_VIDEO_ENCODING_MPEG_1 = 0,
- V4L2_MPEG_VIDEO_ENCODING_MPEG_2 = 1,
- V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC = 2,
-};
-#define V4L2_CID_MPEG_VIDEO_ASPECT (V4L2_CID_MPEG_BASE+201)
-enum <link linkend="v4l2-mpeg-video-aspect">v4l2_mpeg_video_aspect</link> {
- V4L2_MPEG_VIDEO_ASPECT_1x1 = 0,
- V4L2_MPEG_VIDEO_ASPECT_4x3 = 1,
- V4L2_MPEG_VIDEO_ASPECT_16x9 = 2,
- V4L2_MPEG_VIDEO_ASPECT_221x100 = 3,
-};
-#define V4L2_CID_MPEG_VIDEO_B_FRAMES (V4L2_CID_MPEG_BASE+202)
-#define V4L2_CID_MPEG_VIDEO_GOP_SIZE (V4L2_CID_MPEG_BASE+203)
-#define V4L2_CID_MPEG_VIDEO_GOP_CLOSURE (V4L2_CID_MPEG_BASE+204)
-#define V4L2_CID_MPEG_VIDEO_PULLDOWN (V4L2_CID_MPEG_BASE+205)
-#define V4L2_CID_MPEG_VIDEO_BITRATE_MODE (V4L2_CID_MPEG_BASE+206)
-enum <link linkend="v4l2-mpeg-video-bitrate-mode">v4l2_mpeg_video_bitrate_mode</link> {
- V4L2_MPEG_VIDEO_BITRATE_MODE_VBR = 0,
- V4L2_MPEG_VIDEO_BITRATE_MODE_CBR = 1,
-};
-#define V4L2_CID_MPEG_VIDEO_BITRATE (V4L2_CID_MPEG_BASE+207)
-#define V4L2_CID_MPEG_VIDEO_BITRATE_PEAK (V4L2_CID_MPEG_BASE+208)
-#define V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION (V4L2_CID_MPEG_BASE+209)
-#define V4L2_CID_MPEG_VIDEO_MUTE (V4L2_CID_MPEG_BASE+210)
-#define V4L2_CID_MPEG_VIDEO_MUTE_YUV (V4L2_CID_MPEG_BASE+211)
-
-/* MPEG-class control IDs specific to the CX2341x driver as defined by V4L2 */
-#define V4L2_CID_MPEG_CX2341X_BASE (V4L2_CTRL_CLASS_MPEG | 0x1000)
-#define V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE (V4L2_CID_MPEG_CX2341X_BASE+0)
-enum <link linkend="v4l2-mpeg-cx2341x-video-spatial-filter-mode">v4l2_mpeg_cx2341x_video_spatial_filter_mode</link> {
- V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL = 0,
- V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO = 1,
-};
-#define V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER (V4L2_CID_MPEG_CX2341X_BASE+1)
-#define V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE (V4L2_CID_MPEG_CX2341X_BASE+2)
-enum <link linkend="luma-spatial-filter-type">v4l2_mpeg_cx2341x_video_luma_spatial_filter_type</link> {
- V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_OFF = 0,
- V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_HOR = 1,
- V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_VERT = 2,
- V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_HV_SEPARABLE = 3,
- V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_SYM_NON_SEPARABLE = 4,
-};
-#define V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE (V4L2_CID_MPEG_CX2341X_BASE+3)
-enum <link linkend="chroma-spatial-filter-type">v4l2_mpeg_cx2341x_video_chroma_spatial_filter_type</link> {
- V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_OFF = 0,
- V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_1D_HOR = 1,
-};
-#define V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE (V4L2_CID_MPEG_CX2341X_BASE+4)
-enum <link linkend="v4l2-mpeg-cx2341x-video-temporal-filter-mode">v4l2_mpeg_cx2341x_video_temporal_filter_mode</link> {
- V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL = 0,
- V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_AUTO = 1,
-};
-#define V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER (V4L2_CID_MPEG_CX2341X_BASE+5)
-#define V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE (V4L2_CID_MPEG_CX2341X_BASE+6)
-enum <link linkend="v4l2-mpeg-cx2341x-video-median-filter-type">v4l2_mpeg_cx2341x_video_median_filter_type</link> {
- V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF = 0,
- V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR = 1,
- V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_VERT = 2,
- V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR_VERT = 3,
- V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_DIAG = 4,
-};
-#define V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM (V4L2_CID_MPEG_CX2341X_BASE+7)
-#define V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP (V4L2_CID_MPEG_CX2341X_BASE+8)
-#define V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM (V4L2_CID_MPEG_CX2341X_BASE+9)
-#define V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP (V4L2_CID_MPEG_CX2341X_BASE+10)
-#define V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS (V4L2_CID_MPEG_CX2341X_BASE+11)
-
-/* Camera class control IDs */
-#define V4L2_CID_CAMERA_CLASS_BASE (V4L2_CTRL_CLASS_CAMERA | 0x900)
-#define V4L2_CID_CAMERA_CLASS (V4L2_CTRL_CLASS_CAMERA | 1)
-
-#define V4L2_CID_EXPOSURE_AUTO (V4L2_CID_CAMERA_CLASS_BASE+1)
-enum <link linkend="v4l2-exposure-auto-type">v4l2_exposure_auto_type</link> {
- V4L2_EXPOSURE_AUTO = 0,
- V4L2_EXPOSURE_MANUAL = 1,
- V4L2_EXPOSURE_SHUTTER_PRIORITY = 2,
- V4L2_EXPOSURE_APERTURE_PRIORITY = 3
-};
-#define V4L2_CID_EXPOSURE_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+2)
-#define V4L2_CID_EXPOSURE_AUTO_PRIORITY (V4L2_CID_CAMERA_CLASS_BASE+3)
-
-#define V4L2_CID_PAN_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+4)
-#define V4L2_CID_TILT_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+5)
-#define V4L2_CID_PAN_RESET (V4L2_CID_CAMERA_CLASS_BASE+6)
-#define V4L2_CID_TILT_RESET (V4L2_CID_CAMERA_CLASS_BASE+7)
-
-#define V4L2_CID_PAN_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+8)
-#define V4L2_CID_TILT_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+9)
-
-#define V4L2_CID_FOCUS_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+10)
-#define V4L2_CID_FOCUS_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+11)
-#define V4L2_CID_FOCUS_AUTO (V4L2_CID_CAMERA_CLASS_BASE+12)
-
-#define V4L2_CID_ZOOM_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+13)
-#define V4L2_CID_ZOOM_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+14)
-#define V4L2_CID_ZOOM_CONTINUOUS (V4L2_CID_CAMERA_CLASS_BASE+15)
-
-#define V4L2_CID_PRIVACY (V4L2_CID_CAMERA_CLASS_BASE+16)
-
-#define V4L2_CID_IRIS_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+17)
-#define V4L2_CID_IRIS_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+18)
-
-/* FM Modulator class control IDs */
-#define V4L2_CID_FM_TX_CLASS_BASE (V4L2_CTRL_CLASS_FM_TX | 0x900)
-#define V4L2_CID_FM_TX_CLASS (V4L2_CTRL_CLASS_FM_TX | 1)
-
-#define V4L2_CID_RDS_TX_DEVIATION (V4L2_CID_FM_TX_CLASS_BASE + 1)
-#define V4L2_CID_RDS_TX_PI (V4L2_CID_FM_TX_CLASS_BASE + 2)
-#define V4L2_CID_RDS_TX_PTY (V4L2_CID_FM_TX_CLASS_BASE + 3)
-#define V4L2_CID_RDS_TX_PS_NAME (V4L2_CID_FM_TX_CLASS_BASE + 5)
-#define V4L2_CID_RDS_TX_RADIO_TEXT (V4L2_CID_FM_TX_CLASS_BASE + 6)
-
-#define V4L2_CID_AUDIO_LIMITER_ENABLED (V4L2_CID_FM_TX_CLASS_BASE + 64)
-#define V4L2_CID_AUDIO_LIMITER_RELEASE_TIME (V4L2_CID_FM_TX_CLASS_BASE + 65)
-#define V4L2_CID_AUDIO_LIMITER_DEVIATION (V4L2_CID_FM_TX_CLASS_BASE + 66)
-
-#define V4L2_CID_AUDIO_COMPRESSION_ENABLED (V4L2_CID_FM_TX_CLASS_BASE + 80)
-#define V4L2_CID_AUDIO_COMPRESSION_GAIN (V4L2_CID_FM_TX_CLASS_BASE + 81)
-#define V4L2_CID_AUDIO_COMPRESSION_THRESHOLD (V4L2_CID_FM_TX_CLASS_BASE + 82)
-#define V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME (V4L2_CID_FM_TX_CLASS_BASE + 83)
-#define V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME (V4L2_CID_FM_TX_CLASS_BASE + 84)
-
-#define V4L2_CID_PILOT_TONE_ENABLED (V4L2_CID_FM_TX_CLASS_BASE + 96)
-#define V4L2_CID_PILOT_TONE_DEVIATION (V4L2_CID_FM_TX_CLASS_BASE + 97)
-#define V4L2_CID_PILOT_TONE_FREQUENCY (V4L2_CID_FM_TX_CLASS_BASE + 98)
-
-#define V4L2_CID_TUNE_PREEMPHASIS (V4L2_CID_FM_TX_CLASS_BASE + 112)
-enum <link linkend="v4l2-preemphasis">v4l2_preemphasis</link> {
- V4L2_PREEMPHASIS_DISABLED = 0,
- V4L2_PREEMPHASIS_50_uS = 1,
- V4L2_PREEMPHASIS_75_uS = 2,
-};
-#define V4L2_CID_TUNE_POWER_LEVEL (V4L2_CID_FM_TX_CLASS_BASE + 113)
-#define V4L2_CID_TUNE_ANTENNA_CAPACITOR (V4L2_CID_FM_TX_CLASS_BASE + 114)
-
-/*
- * T U N I N G
- */
-struct <link linkend="v4l2-tuner">v4l2_tuner</link> {
- __u32 index;
- __u8 name[32];
- enum <link linkend="v4l2-tuner-type">v4l2_tuner_type</link> type;
- __u32 capability;
- __u32 rangelow;
- __u32 rangehigh;
- __u32 rxsubchans;
- __u32 audmode;
- __s32 signal;
- __s32 afc;
- __u32 reserved[4];
-};
-
-struct <link linkend="v4l2-modulator">v4l2_modulator</link> {
- __u32 index;
- __u8 name[32];
- __u32 capability;
- __u32 rangelow;
- __u32 rangehigh;
- __u32 txsubchans;
- __u32 reserved[4];
-};
-
-/* Flags for the 'capability' field */
-#define V4L2_TUNER_CAP_LOW 0x0001
-#define V4L2_TUNER_CAP_NORM 0x0002
-#define V4L2_TUNER_CAP_STEREO 0x0010
-#define V4L2_TUNER_CAP_LANG2 0x0020
-#define V4L2_TUNER_CAP_SAP 0x0020
-#define V4L2_TUNER_CAP_LANG1 0x0040
-#define V4L2_TUNER_CAP_RDS 0x0080
-#define V4L2_TUNER_CAP_RDS_BLOCK_IO 0x0100
-#define V4L2_TUNER_CAP_RDS_CONTROLS 0x0200
-
-/* Flags for the 'rxsubchans' field */
-#define V4L2_TUNER_SUB_MONO 0x0001
-#define V4L2_TUNER_SUB_STEREO 0x0002
-#define V4L2_TUNER_SUB_LANG2 0x0004
-#define V4L2_TUNER_SUB_SAP 0x0004
-#define V4L2_TUNER_SUB_LANG1 0x0008
-#define V4L2_TUNER_SUB_RDS 0x0010
-
-/* Values for the 'audmode' field */
-#define V4L2_TUNER_MODE_MONO 0x0000
-#define V4L2_TUNER_MODE_STEREO 0x0001
-#define V4L2_TUNER_MODE_LANG2 0x0002
-#define V4L2_TUNER_MODE_SAP 0x0002
-#define V4L2_TUNER_MODE_LANG1 0x0003
-#define V4L2_TUNER_MODE_LANG1_LANG2 0x0004
-
-struct <link linkend="v4l2-frequency">v4l2_frequency</link> {
- __u32 tuner;
- enum <link linkend="v4l2-tuner-type">v4l2_tuner_type</link> type;
- __u32 frequency;
- __u32 reserved[8];
-};
-
-struct <link linkend="v4l2-hw-freq-seek">v4l2_hw_freq_seek</link> {
- __u32 tuner;
- enum <link linkend="v4l2-tuner-type">v4l2_tuner_type</link> type;
- __u32 seek_upward;
- __u32 wrap_around;
- __u32 spacing;
- __u32 reserved[7];
-};
-
-/*
- * R D S
- */
-
-struct <link linkend="v4l2-rds-data">v4l2_rds_data</link> {
- __u8 lsb;
- __u8 msb;
- __u8 block;
-} __attribute__ ((packed));
-
-#define V4L2_RDS_BLOCK_MSK 0x7
-#define V4L2_RDS_BLOCK_A 0
-#define V4L2_RDS_BLOCK_B 1
-#define V4L2_RDS_BLOCK_C 2
-#define V4L2_RDS_BLOCK_D 3
-#define V4L2_RDS_BLOCK_C_ALT 4
-#define V4L2_RDS_BLOCK_INVALID 7
-
-#define V4L2_RDS_BLOCK_CORRECTED 0x40
-#define V4L2_RDS_BLOCK_ERROR 0x80
-
-/*
- * A U D I O
- */
-struct <link linkend="v4l2-audio">v4l2_audio</link> {
- __u32 index;
- __u8 name[32];
- __u32 capability;
- __u32 mode;
- __u32 reserved[2];
-};
-
-/* Flags for the 'capability' field */
-#define V4L2_AUDCAP_STEREO 0x00001
-#define V4L2_AUDCAP_AVL 0x00002
-
-/* Flags for the 'mode' field */
-#define V4L2_AUDMODE_AVL 0x00001
-
-struct <link linkend="v4l2-audioout">v4l2_audioout</link> {
- __u32 index;
- __u8 name[32];
- __u32 capability;
- __u32 mode;
- __u32 reserved[2];
-};
-
-/*
- * M P E G S E R V I C E S
- *
- * NOTE: EXPERIMENTAL API
- */
-#if 1
-#define V4L2_ENC_IDX_FRAME_I (0)
-#define V4L2_ENC_IDX_FRAME_P (1)
-#define V4L2_ENC_IDX_FRAME_B (2)
-#define V4L2_ENC_IDX_FRAME_MASK (0xf)
-
-struct <link linkend="v4l2-enc-idx-entry">v4l2_enc_idx_entry</link> {
- __u64 offset;
- __u64 pts;
- __u32 length;
- __u32 flags;
- __u32 reserved[2];
-};
-
-#define V4L2_ENC_IDX_ENTRIES (64)
-struct <link linkend="v4l2-enc-idx">v4l2_enc_idx</link> {
- __u32 entries;
- __u32 entries_cap;
- __u32 reserved[4];
- struct <link linkend="v4l2-enc-idx-entry">v4l2_enc_idx_entry</link> entry[V4L2_ENC_IDX_ENTRIES];
-};
-
-
-#define V4L2_ENC_CMD_START (0)
-#define V4L2_ENC_CMD_STOP (1)
-#define V4L2_ENC_CMD_PAUSE (2)
-#define V4L2_ENC_CMD_RESUME (3)
-
-/* Flags for V4L2_ENC_CMD_STOP */
-#define V4L2_ENC_CMD_STOP_AT_GOP_END (1 << 0)
-
-struct <link linkend="v4l2-encoder-cmd">v4l2_encoder_cmd</link> {
- __u32 cmd;
- __u32 flags;
- union {
- struct {
- __u32 data[8];
- } raw;
- };
-};
-
-#endif
-
-
-/*
- * D A T A S E R V I C E S ( V B I )
- *
- * Data services API by Michael Schimek
- */
-
-/* Raw VBI */
-struct <link linkend="v4l2-vbi-format">v4l2_vbi_format</link> {
- __u32 sampling_rate; /* in 1 Hz */
- __u32 offset;
- __u32 samples_per_line;
- __u32 sample_format; /* V4L2_PIX_FMT_* */
- __s32 start[2];
- __u32 count[2];
- __u32 flags; /* V4L2_VBI_* */
- __u32 reserved[2]; /* must be zero */
-};
-
-/* VBI flags */
-#define V4L2_VBI_UNSYNC (1 << 0)
-#define V4L2_VBI_INTERLACED (1 << 1)
-
-/* Sliced VBI
- *
- * This implements is a proposal V4L2 API to allow SLICED VBI
- * required for some hardware encoders. It should change without
- * notice in the definitive implementation.
- */
-
-struct <link linkend="v4l2-sliced-vbi-format">v4l2_sliced_vbi_format</link> {
- __u16 service_set;
- /* service_lines[0][...] specifies lines 0-23 (1-23 used) of the first field
- service_lines[1][...] specifies lines 0-23 (1-23 used) of the second field
- (equals frame lines 313-336 for 625 line video
- standards, 263-286 for 525 line standards) */
- __u16 service_lines[2][24];
- __u32 io_size;
- __u32 reserved[2]; /* must be zero */
-};
-
-/* Teletext World System Teletext
- (WST), defined on ITU-R BT.653-2 */
-#define V4L2_SLICED_TELETEXT_B (0x0001)
-/* Video Program System, defined on ETS 300 231*/
-#define V4L2_SLICED_VPS (0x0400)
-/* Closed Caption, defined on EIA-608 */
-#define V4L2_SLICED_CAPTION_525 (0x1000)
-/* Wide Screen System, defined on ITU-R BT1119.1 */
-#define V4L2_SLICED_WSS_625 (0x4000)
-
-#define V4L2_SLICED_VBI_525 (V4L2_SLICED_CAPTION_525)
-#define V4L2_SLICED_VBI_625 (V4L2_SLICED_TELETEXT_B | V4L2_SLICED_VPS | V4L2_SLICED_WSS_625)
-
-struct <link linkend="v4l2-sliced-vbi-cap">v4l2_sliced_vbi_cap</link> {
- __u16 service_set;
- /* service_lines[0][...] specifies lines 0-23 (1-23 used) of the first field
- service_lines[1][...] specifies lines 0-23 (1-23 used) of the second field
- (equals frame lines 313-336 for 625 line video
- standards, 263-286 for 525 line standards) */
- __u16 service_lines[2][24];
- enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type;
- __u32 reserved[3]; /* must be 0 */
-};
-
-struct <link linkend="v4l2-sliced-vbi-data">v4l2_sliced_vbi_data</link> {
- __u32 id;
- __u32 field; /* 0: first field, 1: second field */
- __u32 line; /* 1-23 */
- __u32 reserved; /* must be 0 */
- __u8 data[48];
-};
-
-/*
- * Sliced VBI data inserted into MPEG Streams
- */
-
-/*
- * V4L2_MPEG_STREAM_VBI_FMT_IVTV:
- *
- * Structure of payload contained in an MPEG 2 Private Stream 1 PES Packet in an
- * MPEG-2 Program Pack that contains V4L2_MPEG_STREAM_VBI_FMT_IVTV Sliced VBI
- * data
- *
- * Note, the MPEG-2 Program Pack and Private Stream 1 PES packet header
- * definitions are not included here. See the MPEG-2 specifications for details
- * on these headers.
- */
-
-/* Line type IDs */
-#define V4L2_MPEG_VBI_IVTV_TELETEXT_B (1)
-#define V4L2_MPEG_VBI_IVTV_CAPTION_525 (4)
-#define V4L2_MPEG_VBI_IVTV_WSS_625 (5)
-#define V4L2_MPEG_VBI_IVTV_VPS (7)
-
-struct <link linkend="v4l2-mpeg-vbi-itv0-line">v4l2_mpeg_vbi_itv0_line</link> {
- __u8 id; /* One of V4L2_MPEG_VBI_IVTV_* above */
- __u8 data[42]; /* Sliced VBI data for the line */
-} __attribute__ ((packed));
-
-struct <link linkend="v4l2-mpeg-vbi-itv0">v4l2_mpeg_vbi_itv0</link> {
- __le32 linemask[2]; /* Bitmasks of VBI service lines present */
- struct <link linkend="v4l2-mpeg-vbi-itv0-line">v4l2_mpeg_vbi_itv0_line</link> line[35];
-} __attribute__ ((packed));
-
-struct <link linkend="v4l2-mpeg-vbi-itv0-1">v4l2_mpeg_vbi_ITV0</link> {
- struct <link linkend="v4l2-mpeg-vbi-itv0-line">v4l2_mpeg_vbi_itv0_line</link> line[36];
-} __attribute__ ((packed));
-
-#define V4L2_MPEG_VBI_IVTV_MAGIC0 "itv0"
-#define V4L2_MPEG_VBI_IVTV_MAGIC1 "ITV0"
-
-struct <link linkend="v4l2-mpeg-vbi-fmt-ivtv">v4l2_mpeg_vbi_fmt_ivtv</link> {
- __u8 magic[4];
- union {
- struct <link linkend="v4l2-mpeg-vbi-itv0">v4l2_mpeg_vbi_itv0</link> itv0;
- struct <link linkend="v4l2-mpeg-vbi-itv0-1">v4l2_mpeg_vbi_ITV0</link> ITV0;
- };
-} __attribute__ ((packed));
-
-/*
- * A G G R E G A T E S T R U C T U R E S
- */
-
-/**
- * struct <link linkend="v4l2-plane-pix-format">v4l2_plane_pix_format</link> - additional, per-plane format definition
- * @sizeimage: maximum size in bytes required for data, for which
- * this plane will be used
- * @bytesperline: distance in bytes between the leftmost pixels in two
- * adjacent lines
- */
-struct <link linkend="v4l2-plane-pix-format">v4l2_plane_pix_format</link> {
- __u32 sizeimage;
- __u16 bytesperline;
- __u16 reserved[7];
-} __attribute__ ((packed));
-
-/**
- * struct <link linkend="v4l2-pix-format-mplane">v4l2_pix_format_mplane</link> - multiplanar format definition
- * @width: image width in pixels
- * @height: image height in pixels
- * @pixelformat: little endian four character code (fourcc)
- * @field: field order (for interlaced video)
- * @colorspace: supplemental to pixelformat
- * @plane_fmt: per-plane information
- * @num_planes: number of planes for this format
- */
-struct <link linkend="v4l2-pix-format-mplane">v4l2_pix_format_mplane</link> {
- __u32 width;
- __u32 height;
- __u32 pixelformat;
- enum <link linkend="v4l2-field">v4l2_field</link> field;
- enum <link linkend="v4l2-colorspace">v4l2_colorspace</link> colorspace;
-
- struct <link linkend="v4l2-plane-pix-format">v4l2_plane_pix_format</link> plane_fmt[VIDEO_MAX_PLANES];
- __u8 num_planes;
- __u8 reserved[11];
-} __attribute__ ((packed));
-
-/**
- * struct <link linkend="v4l2-format">v4l2_format</link> - stream data format
- * @type: type of the data stream
- * @pix: definition of an image format
- * @pix_mp: definition of a multiplanar image format
- * @win: definition of an overlaid image
- * @vbi: raw VBI capture or output parameters
- * @sliced: sliced VBI capture or output parameters
- * @raw_data: placeholder for future extensions and custom formats
- */
-struct <link linkend="v4l2-format">v4l2_format</link> {
- enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type;
- union {
- struct <link linkend="v4l2-pix-format">v4l2_pix_format</link> pix; /* V4L2_BUF_TYPE_VIDEO_CAPTURE */
- struct <link linkend="v4l2-pix-format-mplane">v4l2_pix_format_mplane</link> pix_mp; /* V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE */
- struct <link linkend="v4l2-window">v4l2_window</link> win; /* V4L2_BUF_TYPE_VIDEO_OVERLAY */
- struct <link linkend="v4l2-vbi-format">v4l2_vbi_format</link> vbi; /* V4L2_BUF_TYPE_VBI_CAPTURE */
- struct <link linkend="v4l2-sliced-vbi-format">v4l2_sliced_vbi_format</link> sliced; /* V4L2_BUF_TYPE_SLICED_VBI_CAPTURE */
- __u8 raw_data[200]; /* user-defined */
- } fmt;
-};
-
-/* Stream type-dependent parameters
- */
-struct <link linkend="v4l2-streamparm">v4l2_streamparm</link> {
- enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type;
- union {
- struct <link linkend="v4l2-captureparm">v4l2_captureparm</link> capture;
- struct <link linkend="v4l2-outputparm">v4l2_outputparm</link> output;
- __u8 raw_data[200]; /* user-defined */
- } parm;
-};
-
-/*
- * E V E N T S
- */
-
-#define V4L2_EVENT_ALL 0
-#define V4L2_EVENT_VSYNC 1
-#define V4L2_EVENT_EOS 2
-#define V4L2_EVENT_PRIVATE_START 0x08000000
-
-/* Payload for V4L2_EVENT_VSYNC */
-struct <link linkend="v4l2-event-vsync">v4l2_event_vsync</link> {
- /* Can be V4L2_FIELD_ANY, _NONE, _TOP or _BOTTOM */
- __u8 field;
-} __attribute__ ((packed));
-
-struct <link linkend="v4l2-event">v4l2_event</link> {
- __u32 type;
- union {
- struct <link linkend="v4l2-event-vsync">v4l2_event_vsync</link> vsync;
- __u8 data[64];
- } u;
- __u32 pending;
- __u32 sequence;
- struct timespec timestamp;
- __u32 reserved[9];
-};
-
-struct <link linkend="v4l2-event-subscription">v4l2_event_subscription</link> {
- __u32 type;
- __u32 reserved[7];
-};
-
-/*
- * A D V A N C E D D E B U G G I N G
- *
- * NOTE: EXPERIMENTAL API, NEVER RELY ON THIS IN APPLICATIONS!
- * FOR DEBUGGING, TESTING AND INTERNAL USE ONLY!
- */
-
-/* VIDIOC_DBG_G_REGISTER and VIDIOC_DBG_S_REGISTER */
-
-#define V4L2_CHIP_MATCH_HOST 0 /* Match against chip ID on host (0 for the host) */
-#define V4L2_CHIP_MATCH_I2C_DRIVER 1 /* Match against I2C driver name */
-#define V4L2_CHIP_MATCH_I2C_ADDR 2 /* Match against I2C 7-bit address */
-#define V4L2_CHIP_MATCH_AC97 3 /* Match against anciliary AC97 chip */
-
-struct <link linkend="v4l2-dbg-match">v4l2_dbg_match</link> {
- __u32 type; /* Match type */
- union { /* Match this chip, meaning determined by type */
- __u32 addr;
- char name[32];
- };
-} __attribute__ ((packed));
-
-struct <link linkend="v4l2-dbg-register">v4l2_dbg_register</link> {
- struct <link linkend="v4l2-dbg-match">v4l2_dbg_match</link> match;
- __u32 size; /* register size in bytes */
- __u64 reg;
- __u64 val;
-} __attribute__ ((packed));
-
-/* VIDIOC_DBG_G_CHIP_IDENT */
-struct <link linkend="v4l2-dbg-chip-ident">v4l2_dbg_chip_ident</link> {
- struct <link linkend="v4l2-dbg-match">v4l2_dbg_match</link> match;
- __u32 ident; /* chip identifier as specified in <media/v4l2-chip-ident.h> */
- __u32 revision; /* chip revision, chip specific */
-} __attribute__ ((packed));
-
-/*
- * I O C T L C O D E S F O R V I D E O D E V I C E S
- *
- */
-#define VIDIOC_QUERYCAP _IOR('V', 0, struct <link linkend="v4l2-capability">v4l2_capability</link>)
-#define VIDIOC_RESERVED _IO('V', 1)
-#define VIDIOC_ENUM_FMT _IOWR('V', 2, struct <link linkend="v4l2-fmtdesc">v4l2_fmtdesc</link>)
-#define VIDIOC_G_FMT _IOWR('V', 4, struct <link linkend="v4l2-format">v4l2_format</link>)
-#define VIDIOC_S_FMT _IOWR('V', 5, struct <link linkend="v4l2-format">v4l2_format</link>)
-#define VIDIOC_REQBUFS _IOWR('V', 8, struct <link linkend="v4l2-requestbuffers">v4l2_requestbuffers</link>)
-#define VIDIOC_QUERYBUF _IOWR('V', 9, struct <link linkend="v4l2-buffer">v4l2_buffer</link>)
-#define VIDIOC_G_FBUF _IOR('V', 10, struct <link linkend="v4l2-framebuffer">v4l2_framebuffer</link>)
-#define VIDIOC_S_FBUF _IOW('V', 11, struct <link linkend="v4l2-framebuffer">v4l2_framebuffer</link>)
-#define VIDIOC_OVERLAY _IOW('V', 14, int)
-#define VIDIOC_QBUF _IOWR('V', 15, struct <link linkend="v4l2-buffer">v4l2_buffer</link>)
-#define VIDIOC_DQBUF _IOWR('V', 17, struct <link linkend="v4l2-buffer">v4l2_buffer</link>)
-#define VIDIOC_STREAMON _IOW('V', 18, int)
-#define VIDIOC_STREAMOFF _IOW('V', 19, int)
-#define VIDIOC_G_PARM _IOWR('V', 21, struct <link linkend="v4l2-streamparm">v4l2_streamparm</link>)
-#define VIDIOC_S_PARM _IOWR('V', 22, struct <link linkend="v4l2-streamparm">v4l2_streamparm</link>)
-#define VIDIOC_G_STD _IOR('V', 23, v4l2_std_id)
-#define VIDIOC_S_STD _IOW('V', 24, v4l2_std_id)
-#define VIDIOC_ENUMSTD _IOWR('V', 25, struct <link linkend="v4l2-standard">v4l2_standard</link>)
-#define VIDIOC_ENUMINPUT _IOWR('V', 26, struct <link linkend="v4l2-input">v4l2_input</link>)
-#define VIDIOC_G_CTRL _IOWR('V', 27, struct <link linkend="v4l2-control">v4l2_control</link>)
-#define VIDIOC_S_CTRL _IOWR('V', 28, struct <link linkend="v4l2-control">v4l2_control</link>)
-#define VIDIOC_G_TUNER _IOWR('V', 29, struct <link linkend="v4l2-tuner">v4l2_tuner</link>)
-#define VIDIOC_S_TUNER _IOW('V', 30, struct <link linkend="v4l2-tuner">v4l2_tuner</link>)
-#define VIDIOC_G_AUDIO _IOR('V', 33, struct <link linkend="v4l2-audio">v4l2_audio</link>)
-#define VIDIOC_S_AUDIO _IOW('V', 34, struct <link linkend="v4l2-audio">v4l2_audio</link>)
-#define VIDIOC_QUERYCTRL _IOWR('V', 36, struct <link linkend="v4l2-queryctrl">v4l2_queryctrl</link>)
-#define VIDIOC_QUERYMENU _IOWR('V', 37, struct <link linkend="v4l2-querymenu">v4l2_querymenu</link>)
-#define VIDIOC_G_INPUT _IOR('V', 38, int)
-#define VIDIOC_S_INPUT _IOWR('V', 39, int)
-#define VIDIOC_G_OUTPUT _IOR('V', 46, int)
-#define VIDIOC_S_OUTPUT _IOWR('V', 47, int)
-#define VIDIOC_ENUMOUTPUT _IOWR('V', 48, struct <link linkend="v4l2-output">v4l2_output</link>)
-#define VIDIOC_G_AUDOUT _IOR('V', 49, struct <link linkend="v4l2-audioout">v4l2_audioout</link>)
-#define VIDIOC_S_AUDOUT _IOW('V', 50, struct <link linkend="v4l2-audioout">v4l2_audioout</link>)
-#define VIDIOC_G_MODULATOR _IOWR('V', 54, struct <link linkend="v4l2-modulator">v4l2_modulator</link>)
-#define VIDIOC_S_MODULATOR _IOW('V', 55, struct <link linkend="v4l2-modulator">v4l2_modulator</link>)
-#define VIDIOC_G_FREQUENCY _IOWR('V', 56, struct <link linkend="v4l2-frequency">v4l2_frequency</link>)
-#define VIDIOC_S_FREQUENCY _IOW('V', 57, struct <link linkend="v4l2-frequency">v4l2_frequency</link>)
-#define VIDIOC_CROPCAP _IOWR('V', 58, struct <link linkend="v4l2-cropcap">v4l2_cropcap</link>)
-#define VIDIOC_G_CROP _IOWR('V', 59, struct <link linkend="v4l2-crop">v4l2_crop</link>)
-#define VIDIOC_S_CROP _IOW('V', 60, struct <link linkend="v4l2-crop">v4l2_crop</link>)
-#define VIDIOC_G_JPEGCOMP _IOR('V', 61, struct <link linkend="v4l2-jpegcompression">v4l2_jpegcompression</link>)
-#define VIDIOC_S_JPEGCOMP _IOW('V', 62, struct <link linkend="v4l2-jpegcompression">v4l2_jpegcompression</link>)
-#define VIDIOC_QUERYSTD _IOR('V', 63, v4l2_std_id)
-#define VIDIOC_TRY_FMT _IOWR('V', 64, struct <link linkend="v4l2-format">v4l2_format</link>)
-#define VIDIOC_ENUMAUDIO _IOWR('V', 65, struct <link linkend="v4l2-audio">v4l2_audio</link>)
-#define VIDIOC_ENUMAUDOUT _IOWR('V', 66, struct <link linkend="v4l2-audioout">v4l2_audioout</link>)
-#define VIDIOC_G_PRIORITY _IOR('V', 67, enum <link linkend="v4l2-priority">v4l2_priority</link>)
-#define VIDIOC_S_PRIORITY _IOW('V', 68, enum <link linkend="v4l2-priority">v4l2_priority</link>)
-#define VIDIOC_G_SLICED_VBI_CAP _IOWR('V', 69, struct <link linkend="v4l2-sliced-vbi-cap">v4l2_sliced_vbi_cap</link>)
-#define VIDIOC_LOG_STATUS _IO('V', 70)
-#define VIDIOC_G_EXT_CTRLS _IOWR('V', 71, struct <link linkend="v4l2-ext-controls">v4l2_ext_controls</link>)
-#define VIDIOC_S_EXT_CTRLS _IOWR('V', 72, struct <link linkend="v4l2-ext-controls">v4l2_ext_controls</link>)
-#define VIDIOC_TRY_EXT_CTRLS _IOWR('V', 73, struct <link linkend="v4l2-ext-controls">v4l2_ext_controls</link>)
-#if 1
-#define VIDIOC_ENUM_FRAMESIZES _IOWR('V', 74, struct <link linkend="v4l2-frmsizeenum">v4l2_frmsizeenum</link>)
-#define VIDIOC_ENUM_FRAMEINTERVALS _IOWR('V', 75, struct <link linkend="v4l2-frmivalenum">v4l2_frmivalenum</link>)
-#define VIDIOC_G_ENC_INDEX _IOR('V', 76, struct <link linkend="v4l2-enc-idx">v4l2_enc_idx</link>)
-#define VIDIOC_ENCODER_CMD _IOWR('V', 77, struct <link linkend="v4l2-encoder-cmd">v4l2_encoder_cmd</link>)
-#define VIDIOC_TRY_ENCODER_CMD _IOWR('V', 78, struct <link linkend="v4l2-encoder-cmd">v4l2_encoder_cmd</link>)
-#endif
-
-#if 1
-/* Experimental, meant for debugging, testing and internal use.
- Only implemented if CONFIG_VIDEO_ADV_DEBUG is defined.
- You must be root to use these ioctls. Never use these in applications! */
-#define VIDIOC_DBG_S_REGISTER _IOW('V', 79, struct <link linkend="v4l2-dbg-register">v4l2_dbg_register</link>)
-#define VIDIOC_DBG_G_REGISTER _IOWR('V', 80, struct <link linkend="v4l2-dbg-register">v4l2_dbg_register</link>)
-
-/* Experimental, meant for debugging, testing and internal use.
- Never use this ioctl in applications! */
-#define VIDIOC_DBG_G_CHIP_IDENT _IOWR('V', 81, struct <link linkend="v4l2-dbg-chip-ident">v4l2_dbg_chip_ident</link>)
-#endif
-
-#define VIDIOC_S_HW_FREQ_SEEK _IOW('V', 82, struct <link linkend="v4l2-hw-freq-seek">v4l2_hw_freq_seek</link>)
-#define VIDIOC_ENUM_DV_PRESETS _IOWR('V', 83, struct <link linkend="v4l2-dv-enum-preset">v4l2_dv_enum_preset</link>)
-#define VIDIOC_S_DV_PRESET _IOWR('V', 84, struct <link linkend="v4l2-dv-preset">v4l2_dv_preset</link>)
-#define VIDIOC_G_DV_PRESET _IOWR('V', 85, struct <link linkend="v4l2-dv-preset">v4l2_dv_preset</link>)
-#define VIDIOC_QUERY_DV_PRESET _IOR('V', 86, struct <link linkend="v4l2-dv-preset">v4l2_dv_preset</link>)
-#define VIDIOC_S_DV_TIMINGS _IOWR('V', 87, struct <link linkend="v4l2-dv-timings">v4l2_dv_timings</link>)
-#define VIDIOC_G_DV_TIMINGS _IOWR('V', 88, struct <link linkend="v4l2-dv-timings">v4l2_dv_timings</link>)
-#define VIDIOC_DQEVENT _IOR('V', 89, struct <link linkend="v4l2-event">v4l2_event</link>)
-#define VIDIOC_SUBSCRIBE_EVENT _IOW('V', 90, struct <link linkend="v4l2-event-subscription">v4l2_event_subscription</link>)
-#define VIDIOC_UNSUBSCRIBE_EVENT _IOW('V', 91, struct <link linkend="v4l2-event-subscription">v4l2_event_subscription</link>)
-
-/* Reminder: when adding new ioctls please add support for them to
- drivers/media/video/v4l2-compat-ioctl32.c as well! */
-
-#define BASE_VIDIOC_PRIVATE 192 /* 192-255 are private */
-
-#endif /* __LINUX_VIDEODEV2_H */
-</programlisting>
diff --git a/Documentation/DocBook/v4l/vidioc-cropcap.xml b/Documentation/DocBook/v4l/vidioc-cropcap.xml
deleted file mode 100644
index 816e90e..0000000
--- a/Documentation/DocBook/v4l/vidioc-cropcap.xml
+++ /dev/null
@@ -1,174 +0,0 @@
-<refentry id="vidioc-cropcap">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_CROPCAP</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_CROPCAP</refname>
- <refpurpose>Information about the video cropping and scaling abilities</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_cropcap
-*<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_CROPCAP</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>Applications use this function to query the cropping
-limits, the pixel aspect of images and to calculate scale factors.
-They set the <structfield>type</structfield> field of a v4l2_cropcap
-structure to the respective buffer (stream) type and call the
-<constant>VIDIOC_CROPCAP</constant> ioctl with a pointer to this
-structure. Drivers fill the rest of the structure. The results are
-constant except when switching the video standard. Remember this
-switch can occur implicit when switching the video input or
-output.</para>
-
- <table pgwide="1" frame="none" id="v4l2-cropcap">
- <title>struct <structname>v4l2_cropcap</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>&v4l2-buf-type;</entry>
- <entry><structfield>type</structfield></entry>
- <entry>Type of the data stream, set by the application.
-Only these types are valid here:
-<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>,
-<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>,
-<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>, and custom (driver
-defined) types with code <constant>V4L2_BUF_TYPE_PRIVATE</constant>
-and higher.</entry>
- </row>
- <row>
- <entry>struct <link linkend="v4l2-rect-crop">v4l2_rect</link></entry>
- <entry><structfield>bounds</structfield></entry>
- <entry>Defines the window within capturing or output is
-possible, this may exclude for example the horizontal and vertical
-blanking areas. The cropping rectangle cannot exceed these limits.
-Width and height are defined in pixels, the driver writer is free to
-choose origin and units of the coordinate system in the analog
-domain.</entry>
- </row>
- <row>
- <entry>struct <link linkend="v4l2-rect-crop">v4l2_rect</link></entry>
- <entry><structfield>defrect</structfield></entry>
- <entry>Default cropping rectangle, it shall cover the
-"whole picture". Assuming pixel aspect 1/1 this could be for example a
-640 × 480 rectangle for NTSC, a
-768 × 576 rectangle for PAL and SECAM centered over
-the active picture area. The same co-ordinate system as for
- <structfield>bounds</structfield> is used.</entry>
- </row>
- <row>
- <entry>&v4l2-fract;</entry>
- <entry><structfield>pixelaspect</structfield></entry>
- <entry><para>This is the pixel aspect (y / x) when no
-scaling is applied, the ratio of the actual sampling
-frequency and the frequency required to get square
-pixels.</para><para>When cropping coordinates refer to square pixels,
-the driver sets <structfield>pixelaspect</structfield> to 1/1. Other
-common values are 54/59 for PAL and SECAM, 11/10 for NTSC sampled
-according to [<xref linkend="itu601" />].</para></entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <!-- NB this table is duplicated in the overlay chapter. -->
-
- <table pgwide="1" frame="none" id="v4l2-rect-crop">
- <title>struct <structname>v4l2_rect</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__s32</entry>
- <entry><structfield>left</structfield></entry>
- <entry>Horizontal offset of the top, left corner of the
-rectangle, in pixels.</entry>
- </row>
- <row>
- <entry>__s32</entry>
- <entry><structfield>top</structfield></entry>
- <entry>Vertical offset of the top, left corner of the
-rectangle, in pixels.</entry>
- </row>
- <row>
- <entry>__s32</entry>
- <entry><structfield>width</structfield></entry>
- <entry>Width of the rectangle, in pixels.</entry>
- </row>
- <row>
- <entry>__s32</entry>
- <entry><structfield>height</structfield></entry>
- <entry>Height of the rectangle, in pixels. Width
-and height cannot be negative, the fields are signed for
-hysterical reasons. <!-- video4linux-list@redhat.com
-on 22 Oct 2002 subject "Re:[V4L][patches!] Re:v4l2/kernel-2.5" -->
-</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The &v4l2-cropcap; <structfield>type</structfield> is
-invalid or the ioctl is not supported. This is not permitted for
-video capture, output and overlay devices, which must support
-<constant>VIDIOC_CROPCAP</constant>.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-dbg-g-chip-ident.xml b/Documentation/DocBook/v4l/vidioc-dbg-g-chip-ident.xml
deleted file mode 100644
index 4a09e20..0000000
--- a/Documentation/DocBook/v4l/vidioc-dbg-g-chip-ident.xml
+++ /dev/null
@@ -1,275 +0,0 @@
-<refentry id="vidioc-dbg-g-chip-ident">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_DBG_G_CHIP_IDENT</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_DBG_G_CHIP_IDENT</refname>
- <refpurpose>Identify the chips on a TV card</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_dbg_chip_ident
-*<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_DBG_G_CHIP_IDENT</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <note>
- <title>Experimental</title>
-
- <para>This is an <link
-linkend="experimental">experimental</link> interface and may change in
-the future.</para>
- </note>
-
- <para>For driver debugging purposes this ioctl allows test
-applications to query the driver about the chips present on the TV
-card. Regular applications must not use it. When you found a chip
-specific bug, please contact the linux-media mailing list (&v4l-ml;)
-so it can be fixed.</para>
-
- <para>To query the driver applications must initialize the
-<structfield>match.type</structfield> and
-<structfield>match.addr</structfield> or <structfield>match.name</structfield>
-fields of a &v4l2-dbg-chip-ident;
-and call <constant>VIDIOC_DBG_G_CHIP_IDENT</constant> with a pointer to
-this structure. On success the driver stores information about the
-selected chip in the <structfield>ident</structfield> and
-<structfield>revision</structfield> fields. On failure the structure
-remains unchanged.</para>
-
- <para>When <structfield>match.type</structfield> is
-<constant>V4L2_CHIP_MATCH_HOST</constant>,
-<structfield>match.addr</structfield> selects the nth non-&i2c; chip
-on the TV card. You can enumerate all chips by starting at zero and
-incrementing <structfield>match.addr</structfield> by one until
-<constant>VIDIOC_DBG_G_CHIP_IDENT</constant> fails with an &EINVAL;.
-The number zero always selects the host chip, ⪚ the chip connected
-to the PCI or USB bus.</para>
-
- <para>When <structfield>match.type</structfield> is
-<constant>V4L2_CHIP_MATCH_I2C_DRIVER</constant>,
-<structfield>match.name</structfield> contains the I2C driver name.
-For instance
-<constant>"saa7127"</constant> will match any chip
-supported by the saa7127 driver, regardless of its &i2c; bus address.
-When multiple chips supported by the same driver are present, the
-ioctl will return <constant>V4L2_IDENT_AMBIGUOUS</constant> in the
-<structfield>ident</structfield> field.</para>
-
- <para>When <structfield>match.type</structfield> is
-<constant>V4L2_CHIP_MATCH_I2C_ADDR</constant>,
-<structfield>match.addr</structfield> selects a chip by its 7 bit
-&i2c; bus address.</para>
-
- <para>When <structfield>match.type</structfield> is
-<constant>V4L2_CHIP_MATCH_AC97</constant>,
-<structfield>match.addr</structfield> selects the nth AC97 chip
-on the TV card. You can enumerate all chips by starting at zero and
-incrementing <structfield>match.addr</structfield> by one until
-<constant>VIDIOC_DBG_G_CHIP_IDENT</constant> fails with an &EINVAL;.</para>
-
- <para>On success, the <structfield>ident</structfield> field will
-contain a chip ID from the Linux
-<filename>media/v4l2-chip-ident.h</filename> header file, and the
-<structfield>revision</structfield> field will contain a driver
-specific value, or zero if no particular revision is associated with
-this chip.</para>
-
- <para>When the driver could not identify the selected chip,
-<structfield>ident</structfield> will contain
-<constant>V4L2_IDENT_UNKNOWN</constant>. When no chip matched
-the ioctl will succeed but the
-<structfield>ident</structfield> field will contain
-<constant>V4L2_IDENT_NONE</constant>. If multiple chips matched,
-<structfield>ident</structfield> will contain
-<constant>V4L2_IDENT_AMBIGUOUS</constant>. In all these cases the
-<structfield>revision</structfield> field remains unchanged.</para>
-
- <para>This ioctl is optional, not all drivers may support it. It
-was introduced in Linux 2.6.21, but the API was changed to the
-one described here in 2.6.29.</para>
-
- <para>We recommended the <application>v4l2-dbg</application>
-utility over calling this ioctl directly. It is available from the
-LinuxTV v4l-dvb repository; see <ulink
-url="http://linuxtv.org/repo/">http://linuxtv.org/repo/</ulink> for
-access instructions.</para>
-
- <!-- Note for convenience vidioc-dbg-g-register.sgml
- contains a duplicate of this table. -->
- <table pgwide="1" frame="none" id="ident-v4l2-dbg-match">
- <title>struct <structname>v4l2_dbg_match</structname></title>
- <tgroup cols="4">
- &cs-ustr;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>type</structfield></entry>
- <entry>See <xref linkend="ident-chip-match-types" /> for a list of
-possible types.</entry>
- </row>
- <row>
- <entry>union</entry>
- <entry>(anonymous)</entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u32</entry>
- <entry><structfield>addr</structfield></entry>
- <entry>Match a chip by this number, interpreted according
-to the <structfield>type</structfield> field.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>char</entry>
- <entry><structfield>name[32]</structfield></entry>
- <entry>Match a chip by this name, interpreted according
-to the <structfield>type</structfield> field.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-dbg-chip-ident">
- <title>struct <structname>v4l2_dbg_chip_ident</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>struct v4l2_dbg_match</entry>
- <entry><structfield>match</structfield></entry>
- <entry>How to match the chip, see <xref linkend="ident-v4l2-dbg-match" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>ident</structfield></entry>
- <entry>A chip identifier as defined in the Linux
-<filename>media/v4l2-chip-ident.h</filename> header file, or one of
-the values from <xref linkend="chip-ids" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>revision</structfield></entry>
- <entry>A chip revision, chip and driver specific.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <!-- Note for convenience vidioc-dbg-g-register.sgml
- contains a duplicate of this table. -->
- <table pgwide="1" frame="none" id="ident-chip-match-types">
- <title>Chip Match Types</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_CHIP_MATCH_HOST</constant></entry>
- <entry>0</entry>
- <entry>Match the nth chip on the card, zero for the
- host chip. Does not match &i2c; chips.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CHIP_MATCH_I2C_DRIVER</constant></entry>
- <entry>1</entry>
- <entry>Match an &i2c; chip by its driver name.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CHIP_MATCH_I2C_ADDR</constant></entry>
- <entry>2</entry>
- <entry>Match a chip by its 7 bit &i2c; bus address.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CHIP_MATCH_AC97</constant></entry>
- <entry>3</entry>
- <entry>Match the nth anciliary AC97 chip.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <!-- This is an anonymous enum in media/v4l2-chip-ident.h. -->
- <table pgwide="1" frame="none" id="chip-ids">
- <title>Chip Identifiers</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_IDENT_NONE</constant></entry>
- <entry>0</entry>
- <entry>No chip matched.</entry>
- </row>
- <row>
- <entry><constant>V4L2_IDENT_AMBIGUOUS</constant></entry>
- <entry>1</entry>
- <entry>Multiple chips matched.</entry>
- </row>
- <row>
- <entry><constant>V4L2_IDENT_UNKNOWN</constant></entry>
- <entry>2</entry>
- <entry>A chip is present at this address, but the driver
-could not identify it.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The driver does not support this ioctl, or the
-<structfield>match_type</structfield> is invalid.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-dbg-g-register.xml b/Documentation/DocBook/v4l/vidioc-dbg-g-register.xml
deleted file mode 100644
index 980c7f3..0000000
--- a/Documentation/DocBook/v4l/vidioc-dbg-g-register.xml
+++ /dev/null
@@ -1,275 +0,0 @@
-<refentry id="vidioc-dbg-g-register">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_DBG_G_REGISTER, VIDIOC_DBG_S_REGISTER</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_DBG_G_REGISTER</refname>
- <refname>VIDIOC_DBG_S_REGISTER</refname>
- <refpurpose>Read or write hardware registers</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_dbg_register *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>const struct v4l2_dbg_register
-*<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_DBG_G_REGISTER, VIDIOC_DBG_S_REGISTER</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <note>
- <title>Experimental</title>
-
- <para>This is an <link linkend="experimental">experimental</link>
-interface and may change in the future.</para>
- </note>
-
- <para>For driver debugging purposes these ioctls allow test
-applications to access hardware registers directly. Regular
-applications must not use them.</para>
-
- <para>Since writing or even reading registers can jeopardize the
-system security, its stability and damage the hardware, both ioctls
-require superuser privileges. Additionally the Linux kernel must be
-compiled with the <constant>CONFIG_VIDEO_ADV_DEBUG</constant> option
-to enable these ioctls.</para>
-
- <para>To write a register applications must initialize all fields
-of a &v4l2-dbg-register; and call
-<constant>VIDIOC_DBG_S_REGISTER</constant> with a pointer to this
-structure. The <structfield>match.type</structfield> and
-<structfield>match.addr</structfield> or <structfield>match.name</structfield>
-fields select a chip on the TV
-card, the <structfield>reg</structfield> field specifies a register
-number and the <structfield>val</structfield> field the value to be
-written into the register.</para>
-
- <para>To read a register applications must initialize the
-<structfield>match.type</structfield>,
-<structfield>match.chip</structfield> or <structfield>match.name</structfield> and
-<structfield>reg</structfield> fields, and call
-<constant>VIDIOC_DBG_G_REGISTER</constant> with a pointer to this
-structure. On success the driver stores the register value in the
-<structfield>val</structfield> field. On failure the structure remains
-unchanged.</para>
-
- <para>When <structfield>match.type</structfield> is
-<constant>V4L2_CHIP_MATCH_HOST</constant>,
-<structfield>match.addr</structfield> selects the nth non-&i2c; chip
-on the TV card. The number zero always selects the host chip, ⪚ the
-chip connected to the PCI or USB bus. You can find out which chips are
-present with the &VIDIOC-DBG-G-CHIP-IDENT; ioctl.</para>
-
- <para>When <structfield>match.type</structfield> is
-<constant>V4L2_CHIP_MATCH_I2C_DRIVER</constant>,
-<structfield>match.name</structfield> contains the I2C driver name.
-For instance
-<constant>"saa7127"</constant> will match any chip
-supported by the saa7127 driver, regardless of its &i2c; bus address.
-When multiple chips supported by the same driver are present, the
-effect of these ioctls is undefined. Again with the
-&VIDIOC-DBG-G-CHIP-IDENT; ioctl you can find out which &i2c; chips are
-present.</para>
-
- <para>When <structfield>match.type</structfield> is
-<constant>V4L2_CHIP_MATCH_I2C_ADDR</constant>,
-<structfield>match.addr</structfield> selects a chip by its 7 bit &i2c;
-bus address.</para>
-
- <para>When <structfield>match.type</structfield> is
-<constant>V4L2_CHIP_MATCH_AC97</constant>,
-<structfield>match.addr</structfield> selects the nth AC97 chip
-on the TV card.</para>
-
- <note>
- <title>Success not guaranteed</title>
-
- <para>Due to a flaw in the Linux &i2c; bus driver these ioctls may
-return successfully without actually reading or writing a register. To
-catch the most likely failure we recommend a &VIDIOC-DBG-G-CHIP-IDENT;
-call confirming the presence of the selected &i2c; chip.</para>
- </note>
-
- <para>These ioctls are optional, not all drivers may support them.
-However when a driver supports these ioctls it must also support
-&VIDIOC-DBG-G-CHIP-IDENT;. Conversely it may support
-<constant>VIDIOC_DBG_G_CHIP_IDENT</constant> but not these ioctls.</para>
-
- <para><constant>VIDIOC_DBG_G_REGISTER</constant> and
-<constant>VIDIOC_DBG_S_REGISTER</constant> were introduced in Linux
-2.6.21, but their API was changed to the one described here in kernel 2.6.29.</para>
-
- <para>We recommended the <application>v4l2-dbg</application>
-utility over calling these ioctls directly. It is available from the
-LinuxTV v4l-dvb repository; see <ulink
-url="http://linuxtv.org/repo/">http://linuxtv.org/repo/</ulink> for
-access instructions.</para>
-
- <!-- Note for convenience vidioc-dbg-g-chip-ident.sgml
- contains a duplicate of this table. -->
- <table pgwide="1" frame="none" id="v4l2-dbg-match">
- <title>struct <structname>v4l2_dbg_match</structname></title>
- <tgroup cols="4">
- &cs-ustr;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>type</structfield></entry>
- <entry>See <xref linkend="ident-chip-match-types" /> for a list of
-possible types.</entry>
- </row>
- <row>
- <entry>union</entry>
- <entry>(anonymous)</entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u32</entry>
- <entry><structfield>addr</structfield></entry>
- <entry>Match a chip by this number, interpreted according
-to the <structfield>type</structfield> field.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>char</entry>
- <entry><structfield>name[32]</structfield></entry>
- <entry>Match a chip by this name, interpreted according
-to the <structfield>type</structfield> field.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
-
- <table pgwide="1" frame="none" id="v4l2-dbg-register">
- <title>struct <structname>v4l2_dbg_register</structname></title>
- <tgroup cols="4">
- <colspec colname="c1" />
- <colspec colname="c2" />
- <colspec colname="c4" />
- <tbody valign="top">
- <row>
- <entry>struct v4l2_dbg_match</entry>
- <entry><structfield>match</structfield></entry>
- <entry>How to match the chip, see <xref linkend="v4l2-dbg-match" />.</entry>
- </row>
- <row>
- <entry>__u64</entry>
- <entry><structfield>reg</structfield></entry>
- <entry>A register number.</entry>
- </row>
- <row>
- <entry>__u64</entry>
- <entry><structfield>val</structfield></entry>
- <entry>The value read from, or to be written into the
-register.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <!-- Note for convenience vidioc-dbg-g-chip-ident.sgml
- contains a duplicate of this table. -->
- <table pgwide="1" frame="none" id="chip-match-types">
- <title>Chip Match Types</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_CHIP_MATCH_HOST</constant></entry>
- <entry>0</entry>
- <entry>Match the nth chip on the card, zero for the
- host chip. Does not match &i2c; chips.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CHIP_MATCH_I2C_DRIVER</constant></entry>
- <entry>1</entry>
- <entry>Match an &i2c; chip by its driver name.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CHIP_MATCH_I2C_ADDR</constant></entry>
- <entry>2</entry>
- <entry>Match a chip by its 7 bit &i2c; bus address.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CHIP_MATCH_AC97</constant></entry>
- <entry>3</entry>
- <entry>Match the nth anciliary AC97 chip.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The driver does not support this ioctl, or the kernel
-was not compiled with the <constant>CONFIG_VIDEO_ADV_DEBUG</constant>
-option, or the <structfield>match_type</structfield> is invalid, or the
-selected chip or register does not exist.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EPERM</errorcode></term>
- <listitem>
- <para>Insufficient permissions. Root privileges are required
-to execute these ioctls.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-dqevent.xml b/Documentation/DocBook/v4l/vidioc-dqevent.xml
deleted file mode 100644
index 4e0a7cc..0000000
--- a/Documentation/DocBook/v4l/vidioc-dqevent.xml
+++ /dev/null
@@ -1,131 +0,0 @@
-<refentry id="vidioc-dqevent">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_DQEVENT</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_DQEVENT</refname>
- <refpurpose>Dequeue event</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_event
-*<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_DQEVENT</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>Dequeue an event from a video device. No input is required
- for this ioctl. All the fields of the &v4l2-event; structure are
- filled by the driver. The file handle will also receive exceptions
- which the application may get by e.g. using the select system
- call.</para>
-
- <table frame="none" pgwide="1" id="v4l2-event">
- <title>struct <structname>v4l2_event</structname></title>
- <tgroup cols="4">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>type</structfield></entry>
- <entry></entry>
- <entry>Type of the event.</entry>
- </row>
- <row>
- <entry>union</entry>
- <entry><structfield>u</structfield></entry>
- <entry></entry>
- <entry></entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-event-vsync;</entry>
- <entry><structfield>vsync</structfield></entry>
- <entry>Event data for event V4L2_EVENT_VSYNC.
- </entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u8</entry>
- <entry><structfield>data</structfield>[64]</entry>
- <entry>Event data. Defined by the event type. The union
- should be used to define easily accessible type for
- events.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>pending</structfield></entry>
- <entry></entry>
- <entry>Number of pending events excluding this one.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>sequence</structfield></entry>
- <entry></entry>
- <entry>Event sequence number. The sequence number is
- incremented for every subscribed event that takes place.
- If sequence numbers are not contiguous it means that
- events have been lost.
- </entry>
- </row>
- <row>
- <entry>struct timespec</entry>
- <entry><structfield>timestamp</structfield></entry>
- <entry></entry>
- <entry>Event timestamp.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[9]</entry>
- <entry></entry>
- <entry>Reserved for future extensions. Drivers must set
- the array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- </refsect1>
-</refentry>
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-encoder-cmd.xml b/Documentation/DocBook/v4l/vidioc-encoder-cmd.xml
deleted file mode 100644
index b0dde94..0000000
--- a/Documentation/DocBook/v4l/vidioc-encoder-cmd.xml
+++ /dev/null
@@ -1,204 +0,0 @@
-<refentry id="vidioc-encoder-cmd">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_ENCODER_CMD, VIDIOC_TRY_ENCODER_CMD</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_ENCODER_CMD</refname>
- <refname>VIDIOC_TRY_ENCODER_CMD</refname>
- <refpurpose>Execute an encoder command</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_encoder_cmd *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_ENCODER_CMD, VIDIOC_TRY_ENCODER_CMD</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <note>
- <title>Experimental</title>
-
- <para>This is an <link linkend="experimental">experimental</link>
-interface and may change in the future.</para>
- </note>
-
- <para>These ioctls control an audio/video (usually MPEG-) encoder.
-<constant>VIDIOC_ENCODER_CMD</constant> sends a command to the
-encoder, <constant>VIDIOC_TRY_ENCODER_CMD</constant> can be used to
-try a command without actually executing it.</para>
-
- <para>To send a command applications must initialize all fields of a
- &v4l2-encoder-cmd; and call
- <constant>VIDIOC_ENCODER_CMD</constant> or
- <constant>VIDIOC_TRY_ENCODER_CMD</constant> with a pointer to this
- structure.</para>
-
- <para>The <structfield>cmd</structfield> field must contain the
-command code. The <structfield>flags</structfield> field is currently
-only used by the STOP command and contains one bit: If the
-<constant>V4L2_ENC_CMD_STOP_AT_GOP_END</constant> flag is set,
-encoding will continue until the end of the current <wordasword>Group
-Of Pictures</wordasword>, otherwise it will stop immediately.</para>
-
- <para>A <function>read</function>() call sends a START command to
-the encoder if it has not been started yet. After a STOP command,
-<function>read</function>() calls will read the remaining data
-buffered by the driver. When the buffer is empty,
-<function>read</function>() will return zero and the next
-<function>read</function>() call will restart the encoder.</para>
-
- <para>A <function>close</function>() call sends an immediate STOP
-to the encoder, and all buffered data is discarded.</para>
-
- <para>These ioctls are optional, not all drivers may support
-them. They were introduced in Linux 2.6.21.</para>
-
- <table pgwide="1" frame="none" id="v4l2-encoder-cmd">
- <title>struct <structname>v4l2_encoder_cmd</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>cmd</structfield></entry>
- <entry>The encoder command, see <xref linkend="encoder-cmds" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>flags</structfield></entry>
- <entry>Flags to go with the command, see <xref
- linkend="encoder-flags" />. If no flags are defined for
-this command, drivers and applications must set this field to
-zero.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>data</structfield>[8]</entry>
- <entry>Reserved for future extensions. Drivers and
-applications must set the array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="encoder-cmds">
- <title>Encoder Commands</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_ENC_CMD_START</constant></entry>
- <entry>0</entry>
- <entry>Start the encoder. When the encoder is already
-running or paused, this command does nothing. No flags are defined for
-this command.</entry>
- </row>
- <row>
- <entry><constant>V4L2_ENC_CMD_STOP</constant></entry>
- <entry>1</entry>
- <entry>Stop the encoder. When the
-<constant>V4L2_ENC_CMD_STOP_AT_GOP_END</constant> flag is set,
-encoding will continue until the end of the current <wordasword>Group
-Of Pictures</wordasword>, otherwise encoding will stop immediately.
-When the encoder is already stopped, this command does
-nothing.</entry>
- </row>
- <row>
- <entry><constant>V4L2_ENC_CMD_PAUSE</constant></entry>
- <entry>2</entry>
- <entry>Pause the encoder. When the encoder has not been
-started yet, the driver will return an &EPERM;. When the encoder is
-already paused, this command does nothing. No flags are defined for
-this command.</entry>
- </row>
- <row>
- <entry><constant>V4L2_ENC_CMD_RESUME</constant></entry>
- <entry>3</entry>
- <entry>Resume encoding after a PAUSE command. When the
-encoder has not been started yet, the driver will return an &EPERM;.
-When the encoder is already running, this command does nothing. No
-flags are defined for this command.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="encoder-flags">
- <title>Encoder Command Flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_ENC_CMD_STOP_AT_GOP_END</constant></entry>
- <entry>0x0001</entry>
- <entry>Stop encoding at the end of the current <wordasword>Group Of
-Pictures</wordasword>, rather than immediately.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The driver does not support this ioctl, or the
-<structfield>cmd</structfield> field is invalid.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EPERM</errorcode></term>
- <listitem>
- <para>The application sent a PAUSE or RESUME command when
-the encoder was not running.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-enum-frameintervals.xml b/Documentation/DocBook/v4l/vidioc-enum-frameintervals.xml
deleted file mode 100644
index 3c216e1..0000000
--- a/Documentation/DocBook/v4l/vidioc-enum-frameintervals.xml
+++ /dev/null
@@ -1,270 +0,0 @@
-<refentry id="vidioc-enum-frameintervals">
-
- <refmeta>
- <refentrytitle>ioctl VIDIOC_ENUM_FRAMEINTERVALS</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_ENUM_FRAMEINTERVALS</refname>
- <refpurpose>Enumerate frame intervals</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_frmivalenum *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_ENUM_FRAMEINTERVALS</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para>Pointer to a &v4l2-frmivalenum; structure that
-contains a pixel format and size and receives a frame interval.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>This ioctl allows applications to enumerate all frame
-intervals that the device supports for the given pixel format and
-frame size.</para>
- <para>The supported pixel formats and frame sizes can be obtained
-by using the &VIDIOC-ENUM-FMT; and &VIDIOC-ENUM-FRAMESIZES;
-functions.</para>
- <para>The return value and the content of the
-<structfield>v4l2_frmivalenum.type</structfield> field depend on the
-type of frame intervals the device supports. Here are the semantics of
-the function for the different cases:</para>
- <itemizedlist>
- <listitem>
- <para><emphasis role="bold">Discrete:</emphasis> The function
-returns success if the given index value (zero-based) is valid. The
-application should increase the index by one for each call until
-<constant>EINVAL</constant> is returned. The `v4l2_frmivalenum.type`
-field is set to `V4L2_FRMIVAL_TYPE_DISCRETE` by the driver. Of the
-union only the `discrete` member is valid.</para>
- </listitem>
- <listitem>
- <para><emphasis role="bold">Step-wise:</emphasis> The function
-returns success if the given index value is zero and
-<constant>EINVAL</constant> for any other index value. The
-<structfield>v4l2_frmivalenum.type</structfield> field is set to
-<constant>V4L2_FRMIVAL_TYPE_STEPWISE</constant> by the driver. Of the
-union only the <structfield>stepwise</structfield> member is
-valid.</para>
- </listitem>
- <listitem>
- <para><emphasis role="bold">Continuous:</emphasis> This is a
-special case of the step-wise type above. The function returns success
-if the given index value is zero and <constant>EINVAL</constant> for
-any other index value. The
-<structfield>v4l2_frmivalenum.type</structfield> field is set to
-<constant>V4L2_FRMIVAL_TYPE_CONTINUOUS</constant> by the driver. Of
-the union only the <structfield>stepwise</structfield> member is valid
-and the <structfield>step</structfield> value is set to 1.</para>
- </listitem>
- </itemizedlist>
-
- <para>When the application calls the function with index zero, it
-must check the <structfield>type</structfield> field to determine the
-type of frame interval enumeration the device supports. Only for the
-<constant>V4L2_FRMIVAL_TYPE_DISCRETE</constant> type does it make
-sense to increase the index value to receive more frame
-intervals.</para>
- <para>Note that the order in which the frame intervals are
-returned has no special meaning. In particular does it not say
-anything about potential default frame intervals.</para>
- <para>Applications can assume that the enumeration data does not
-change without any interaction from the application itself. This means
-that the enumeration data is consistent if the application does not
-perform any other ioctl calls while it runs the frame interval
-enumeration.</para>
- </refsect1>
-
- <refsect1>
- <title>Notes</title>
-
- <itemizedlist>
- <listitem>
- <para><emphasis role="bold">Frame intervals and frame
-rates:</emphasis> The V4L2 API uses frame intervals instead of frame
-rates. Given the frame interval the frame rate can be computed as
-follows:<screen>frame_rate = 1 / frame_interval</screen></para>
- </listitem>
- </itemizedlist>
-
- </refsect1>
-
- <refsect1>
- <title>Structs</title>
-
- <para>In the structs below, <emphasis>IN</emphasis> denotes a
-value that has to be filled in by the application,
-<emphasis>OUT</emphasis> denotes values that the driver fills in. The
-application should zero out all members except for the
-<emphasis>IN</emphasis> fields.</para>
-
- <table pgwide="1" frame="none" id="v4l2-frmival-stepwise">
- <title>struct <structname>v4l2_frmival_stepwise</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>&v4l2-fract;</entry>
- <entry><structfield>min</structfield></entry>
- <entry>Minimum frame interval [s].</entry>
- </row>
- <row>
- <entry>&v4l2-fract;</entry>
- <entry><structfield>max</structfield></entry>
- <entry>Maximum frame interval [s].</entry>
- </row>
- <row>
- <entry>&v4l2-fract;</entry>
- <entry><structfield>step</structfield></entry>
- <entry>Frame interval step size [s].</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-frmivalenum">
- <title>struct <structname>v4l2_frmivalenum</structname></title>
- <tgroup cols="4">
- <colspec colname="c1" />
- <colspec colname="c2" />
- <colspec colname="c3" />
- <colspec colname="c4" />
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>index</structfield></entry>
- <entry></entry>
- <entry>IN: Index of the given frame interval in the
-enumeration.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>pixel_format</structfield></entry>
- <entry></entry>
- <entry>IN: Pixel format for which the frame intervals are
-enumerated.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>width</structfield></entry>
- <entry></entry>
- <entry>IN: Frame width for which the frame intervals are
-enumerated.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>height</structfield></entry>
- <entry></entry>
- <entry>IN: Frame height for which the frame intervals are
-enumerated.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>type</structfield></entry>
- <entry></entry>
- <entry>OUT: Frame interval type the device supports.</entry>
- </row>
- <row>
- <entry>union</entry>
- <entry></entry>
- <entry></entry>
- <entry>OUT: Frame interval with the given index.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-fract;</entry>
- <entry><structfield>discrete</structfield></entry>
- <entry>Frame interval [s].</entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-frmival-stepwise;</entry>
- <entry><structfield>stepwise</structfield></entry>
- <entry></entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved[2]</structfield></entry>
- <entry></entry>
- <entry>Reserved space for future use.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- <title>Enums</title>
-
- <table pgwide="1" frame="none" id="v4l2-frmivaltypes">
- <title>enum <structname>v4l2_frmivaltypes</structname></title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_FRMIVAL_TYPE_DISCRETE</constant></entry>
- <entry>1</entry>
- <entry>Discrete frame interval.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FRMIVAL_TYPE_CONTINUOUS</constant></entry>
- <entry>2</entry>
- <entry>Continuous frame interval.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FRMIVAL_TYPE_STEPWISE</constant></entry>
- <entry>3</entry>
- <entry>Step-wise defined frame interval.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <para>See the description section above for a list of return
-values that <varname>errno</varname> can have.</para>
- </refsect1>
-
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-enum-framesizes.xml b/Documentation/DocBook/v4l/vidioc-enum-framesizes.xml
deleted file mode 100644
index 6afa454..0000000
--- a/Documentation/DocBook/v4l/vidioc-enum-framesizes.xml
+++ /dev/null
@@ -1,282 +0,0 @@
-<refentry id="vidioc-enum-framesizes">
-
- <refmeta>
- <refentrytitle>ioctl VIDIOC_ENUM_FRAMESIZES</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_ENUM_FRAMESIZES</refname>
- <refpurpose>Enumerate frame sizes</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_frmsizeenum *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_ENUM_FRAMESIZES</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para>Pointer to a &v4l2-frmsizeenum; that contains an index
-and pixel format and receives a frame width and height.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <note>
- <title>Experimental</title>
-
- <para>This is an <link linkend="experimental">experimental</link>
-interface and may change in the future.</para>
- </note>
-
- <para>This ioctl allows applications to enumerate all frame sizes
-(&ie; width and height in pixels) that the device supports for the
-given pixel format.</para>
- <para>The supported pixel formats can be obtained by using the
-&VIDIOC-ENUM-FMT; function.</para>
- <para>The return value and the content of the
-<structfield>v4l2_frmsizeenum.type</structfield> field depend on the
-type of frame sizes the device supports. Here are the semantics of the
-function for the different cases:</para>
-
- <itemizedlist>
- <listitem>
- <para><emphasis role="bold">Discrete:</emphasis> The function
-returns success if the given index value (zero-based) is valid. The
-application should increase the index by one for each call until
-<constant>EINVAL</constant> is returned. The
-<structfield>v4l2_frmsizeenum.type</structfield> field is set to
-<constant>V4L2_FRMSIZE_TYPE_DISCRETE</constant> by the driver. Of the
-union only the <structfield>discrete</structfield> member is
-valid.</para>
- </listitem>
- <listitem>
- <para><emphasis role="bold">Step-wise:</emphasis> The function
-returns success if the given index value is zero and
-<constant>EINVAL</constant> for any other index value. The
-<structfield>v4l2_frmsizeenum.type</structfield> field is set to
-<constant>V4L2_FRMSIZE_TYPE_STEPWISE</constant> by the driver. Of the
-union only the <structfield>stepwise</structfield> member is
-valid.</para>
- </listitem>
- <listitem>
- <para><emphasis role="bold">Continuous:</emphasis> This is a
-special case of the step-wise type above. The function returns success
-if the given index value is zero and <constant>EINVAL</constant> for
-any other index value. The
-<structfield>v4l2_frmsizeenum.type</structfield> field is set to
-<constant>V4L2_FRMSIZE_TYPE_CONTINUOUS</constant> by the driver. Of
-the union only the <structfield>stepwise</structfield> member is valid
-and the <structfield>step_width</structfield> and
-<structfield>step_height</structfield> values are set to 1.</para>
- </listitem>
- </itemizedlist>
-
- <para>When the application calls the function with index zero, it
-must check the <structfield>type</structfield> field to determine the
-type of frame size enumeration the device supports. Only for the
-<constant>V4L2_FRMSIZE_TYPE_DISCRETE</constant> type does it make
-sense to increase the index value to receive more frame sizes.</para>
- <para>Note that the order in which the frame sizes are returned
-has no special meaning. In particular does it not say anything about
-potential default format sizes.</para>
- <para>Applications can assume that the enumeration data does not
-change without any interaction from the application itself. This means
-that the enumeration data is consistent if the application does not
-perform any other ioctl calls while it runs the frame size
-enumeration.</para>
- </refsect1>
-
- <refsect1>
- <title>Structs</title>
-
- <para>In the structs below, <emphasis>IN</emphasis> denotes a
-value that has to be filled in by the application,
-<emphasis>OUT</emphasis> denotes values that the driver fills in. The
-application should zero out all members except for the
-<emphasis>IN</emphasis> fields.</para>
-
- <table pgwide="1" frame="none" id="v4l2-frmsize-discrete">
- <title>struct <structname>v4l2_frmsize_discrete</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>width</structfield></entry>
- <entry>Width of the frame [pixel].</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>height</structfield></entry>
- <entry>Height of the frame [pixel].</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-frmsize-stepwise">
- <title>struct <structname>v4l2_frmsize_stepwise</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>min_width</structfield></entry>
- <entry>Minimum frame width [pixel].</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>max_width</structfield></entry>
- <entry>Maximum frame width [pixel].</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>step_width</structfield></entry>
- <entry>Frame width step size [pixel].</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>min_height</structfield></entry>
- <entry>Minimum frame height [pixel].</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>max_height</structfield></entry>
- <entry>Maximum frame height [pixel].</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>step_height</structfield></entry>
- <entry>Frame height step size [pixel].</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-frmsizeenum">
- <title>struct <structname>v4l2_frmsizeenum</structname></title>
- <tgroup cols="4">
- <colspec colname="c1" />
- <colspec colname="c2" />
- <colspec colname="c3" />
- <colspec colname="c4" />
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>index</structfield></entry>
- <entry></entry>
- <entry>IN: Index of the given frame size in the enumeration.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>pixel_format</structfield></entry>
- <entry></entry>
- <entry>IN: Pixel format for which the frame sizes are enumerated.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>type</structfield></entry>
- <entry></entry>
- <entry>OUT: Frame size type the device supports.</entry>
- </row>
- <row>
- <entry>union</entry>
- <entry></entry>
- <entry></entry>
- <entry>OUT: Frame size with the given index.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-frmsize-discrete;</entry>
- <entry><structfield>discrete</structfield></entry>
- <entry></entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-frmsize-stepwise;</entry>
- <entry><structfield>stepwise</structfield></entry>
- <entry></entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved[2]</structfield></entry>
- <entry></entry>
- <entry>Reserved space for future use.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- <title>Enums</title>
-
- <table pgwide="1" frame="none" id="v4l2-frmsizetypes">
- <title>enum <structname>v4l2_frmsizetypes</structname></title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_FRMSIZE_TYPE_DISCRETE</constant></entry>
- <entry>1</entry>
- <entry>Discrete frame size.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FRMSIZE_TYPE_CONTINUOUS</constant></entry>
- <entry>2</entry>
- <entry>Continuous frame size.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FRMSIZE_TYPE_STEPWISE</constant></entry>
- <entry>3</entry>
- <entry>Step-wise defined frame size.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <para>See the description section above for a list of return
-values that <varname>errno</varname> can have.</para>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-enumaudio.xml b/Documentation/DocBook/v4l/vidioc-enumaudio.xml
deleted file mode 100644
index 9ae8f2d..0000000
--- a/Documentation/DocBook/v4l/vidioc-enumaudio.xml
+++ /dev/null
@@ -1,86 +0,0 @@
-<refentry id="vidioc-enumaudio">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_ENUMAUDIO</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_ENUMAUDIO</refname>
- <refpurpose>Enumerate audio inputs</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_audio *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_ENUMAUDIO</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To query the attributes of an audio input applications
-initialize the <structfield>index</structfield> field and zero out the
-<structfield>reserved</structfield> array of a &v4l2-audio;
-and call the <constant>VIDIOC_ENUMAUDIO</constant> ioctl with a pointer
-to this structure. Drivers fill the rest of the structure or return an
-&EINVAL; when the index is out of bounds. To enumerate all audio
-inputs applications shall begin at index zero, incrementing by one
-until the driver returns <errorcode>EINVAL</errorcode>.</para>
-
- <para>See <xref linkend="vidioc-g-audio" /> for a description of
-&v4l2-audio;.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The number of the audio input is out of bounds, or
-there are no audio inputs at all and this ioctl is not
-supported.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-enumaudioout.xml b/Documentation/DocBook/v4l/vidioc-enumaudioout.xml
deleted file mode 100644
index d3d7c0a..0000000
--- a/Documentation/DocBook/v4l/vidioc-enumaudioout.xml
+++ /dev/null
@@ -1,89 +0,0 @@
-<refentry id="vidioc-enumaudioout">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_ENUMAUDOUT</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_ENUMAUDOUT</refname>
- <refpurpose>Enumerate audio outputs</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_audioout *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_ENUMAUDOUT</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To query the attributes of an audio output applications
-initialize the <structfield>index</structfield> field and zero out the
-<structfield>reserved</structfield> array of a &v4l2-audioout; and
-call the <constant>VIDIOC_G_AUDOUT</constant> ioctl with a pointer
-to this structure. Drivers fill the rest of the structure or return an
-&EINVAL; when the index is out of bounds. To enumerate all audio
-outputs applications shall begin at index zero, incrementing by one
-until the driver returns <errorcode>EINVAL</errorcode>.</para>
-
- <para>Note connectors on a TV card to loop back the received audio
-signal to a sound card are not audio outputs in this sense.</para>
-
- <para>See <xref linkend="vidioc-g-audioout" /> for a description of
-&v4l2-audioout;.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The number of the audio output is out of bounds, or
-there are no audio outputs at all and this ioctl is not
-supported.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-audio.xml b/Documentation/DocBook/v4l/vidioc-g-audio.xml
deleted file mode 100644
index 65361a8..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-audio.xml
+++ /dev/null
@@ -1,188 +0,0 @@
-<refentry id="vidioc-g-audio">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_AUDIO, VIDIOC_S_AUDIO</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_AUDIO</refname>
- <refname>VIDIOC_S_AUDIO</refname>
- <refpurpose>Query or select the current audio input and its
-attributes</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_audio *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>const struct v4l2_audio *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_AUDIO, VIDIOC_S_AUDIO</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To query the current audio input applications zero out the
-<structfield>reserved</structfield> array of a &v4l2-audio;
-and call the <constant>VIDIOC_G_AUDIO</constant> ioctl with a pointer
-to this structure. Drivers fill the rest of the structure or return an
-&EINVAL; when the device has no audio inputs, or none which combine
-with the current video input.</para>
-
- <para>Audio inputs have one writable property, the audio mode. To
-select the current audio input <emphasis>and</emphasis> change the
-audio mode, applications initialize the
-<structfield>index</structfield> and <structfield>mode</structfield>
-fields, and the
-<structfield>reserved</structfield> array of a
-<structname>v4l2_audio</structname> structure and call the
-<constant>VIDIOC_S_AUDIO</constant> ioctl. Drivers may switch to a
-different audio mode if the request cannot be satisfied. However, this
-is a write-only ioctl, it does not return the actual new audio
-mode.</para>
-
- <table pgwide="1" frame="none" id="v4l2-audio">
- <title>struct <structname>v4l2_audio</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>index</structfield></entry>
- <entry>Identifies the audio input, set by the
-driver or application.</entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>name</structfield>[32]</entry>
- <entry>Name of the audio input, a NUL-terminated ASCII
-string, for example: "Line In". This information is intended for the
-user, preferably the connector label on the device itself.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>capability</structfield></entry>
- <entry>Audio capability flags, see <xref
- linkend="audio-capability" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>mode</structfield></entry>
- <entry>Audio mode flags set by drivers and applications (on
- <constant>VIDIOC_S_AUDIO</constant> ioctl), see <xref linkend="audio-mode" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[2]</entry>
- <entry>Reserved for future extensions. Drivers and
-applications must set the array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="audio-capability">
- <title>Audio Capability Flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_AUDCAP_STEREO</constant></entry>
- <entry>0x00001</entry>
- <entry>This is a stereo input. The flag is intended to
-automatically disable stereo recording etc. when the signal is always
-monaural. The API provides no means to detect if stereo is
-<emphasis>received</emphasis>, unless the audio input belongs to a
-tuner.</entry>
- </row>
- <row>
- <entry><constant>V4L2_AUDCAP_AVL</constant></entry>
- <entry>0x00002</entry>
- <entry>Automatic Volume Level mode is supported.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="audio-mode">
- <title>Audio Mode Flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_AUDMODE_AVL</constant></entry>
- <entry>0x00001</entry>
- <entry>AVL mode is on.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>No audio inputs combine with the current video input,
-or the number of the selected audio input is out of bounds or it does
-not combine, or there are no audio inputs at all and the ioctl is not
-supported.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>I/O is in progress, the input cannot be
-switched.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-audioout.xml b/Documentation/DocBook/v4l/vidioc-g-audioout.xml
deleted file mode 100644
index 3632730..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-audioout.xml
+++ /dev/null
@@ -1,154 +0,0 @@
-<refentry id="vidioc-g-audioout">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_AUDOUT, VIDIOC_S_AUDOUT</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_AUDOUT</refname>
- <refname>VIDIOC_S_AUDOUT</refname>
- <refpurpose>Query or select the current audio output</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_audioout *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>const struct v4l2_audioout *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_AUDOUT, VIDIOC_S_AUDOUT</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To query the current audio output applications zero out the
-<structfield>reserved</structfield> array of a &v4l2-audioout; and
-call the <constant>VIDIOC_G_AUDOUT</constant> ioctl with a pointer
-to this structure. Drivers fill the rest of the structure or return an
-&EINVAL; when the device has no audio inputs, or none which combine
-with the current video output.</para>
-
- <para>Audio outputs have no writable properties. Nevertheless, to
-select the current audio output applications can initialize the
-<structfield>index</structfield> field and
-<structfield>reserved</structfield> array (which in the future may
-contain writable properties) of a
-<structname>v4l2_audioout</structname> structure and call the
-<constant>VIDIOC_S_AUDOUT</constant> ioctl. Drivers switch to the
-requested output or return the &EINVAL; when the index is out of
-bounds. This is a write-only ioctl, it does not return the current
-audio output attributes as <constant>VIDIOC_G_AUDOUT</constant>
-does.</para>
-
- <para>Note connectors on a TV card to loop back the received audio
-signal to a sound card are not audio outputs in this sense.</para>
-
- <table pgwide="1" frame="none" id="v4l2-audioout">
- <title>struct <structname>v4l2_audioout</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>index</structfield></entry>
- <entry>Identifies the audio output, set by the
-driver or application.</entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>name</structfield>[32]</entry>
- <entry>Name of the audio output, a NUL-terminated ASCII
-string, for example: "Line Out". This information is intended for the
-user, preferably the connector label on the device itself.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>capability</structfield></entry>
- <entry>Audio capability flags, none defined yet. Drivers
-must set this field to zero.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>mode</structfield></entry>
- <entry>Audio mode, none defined yet. Drivers and
-applications (on <constant>VIDIOC_S_AUDOUT</constant>) must set this
-field to zero.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[2]</entry>
- <entry>Reserved for future extensions. Drivers and
-applications must set the array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>No audio outputs combine with the current video
-output, or the number of the selected audio output is out of bounds or
-it does not combine, or there are no audio outputs at all and the
-ioctl is not supported.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>I/O is in progress, the output cannot be
-switched.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-crop.xml b/Documentation/DocBook/v4l/vidioc-g-crop.xml
deleted file mode 100644
index d235b1d..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-crop.xml
+++ /dev/null
@@ -1,143 +0,0 @@
-<refentry id="vidioc-g-crop">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_CROP, VIDIOC_S_CROP</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_CROP</refname>
- <refname>VIDIOC_S_CROP</refname>
- <refpurpose>Get or set the current cropping rectangle</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_crop *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>const struct v4l2_crop *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_CROP, VIDIOC_S_CROP</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To query the cropping rectangle size and position
-applications set the <structfield>type</structfield> field of a
-<structname>v4l2_crop</structname> structure to the respective buffer
-(stream) type and call the <constant>VIDIOC_G_CROP</constant> ioctl
-with a pointer to this structure. The driver fills the rest of the
-structure or returns the &EINVAL; if cropping is not supported.</para>
-
- <para>To change the cropping rectangle applications initialize the
-<structfield>type</structfield> and &v4l2-rect; substructure named
-<structfield>c</structfield> of a v4l2_crop structure and call the
-<constant>VIDIOC_S_CROP</constant> ioctl with a pointer to this
-structure.</para>
-
- <para>The driver first adjusts the requested dimensions against
-hardware limits, &ie; the bounds given by the capture/output window,
-and it rounds to the closest possible values of horizontal and
-vertical offset, width and height. In particular the driver must round
-the vertical offset of the cropping rectangle to frame lines modulo
-two, such that the field order cannot be confused.</para>
-
- <para>Second the driver adjusts the image size (the opposite
-rectangle of the scaling process, source or target depending on the
-data direction) to the closest size possible while maintaining the
-current horizontal and vertical scaling factor.</para>
-
- <para>Finally the driver programs the hardware with the actual
-cropping and image parameters. <constant>VIDIOC_S_CROP</constant> is a
-write-only ioctl, it does not return the actual parameters. To query
-them applications must call <constant>VIDIOC_G_CROP</constant> and
-&VIDIOC-G-FMT;. When the parameters are unsuitable the application may
-modify the cropping or image parameters and repeat the cycle until
-satisfactory parameters have been negotiated.</para>
-
- <para>When cropping is not supported then no parameters are
-changed and <constant>VIDIOC_S_CROP</constant> returns the
-&EINVAL;.</para>
-
- <table pgwide="1" frame="none" id="v4l2-crop">
- <title>struct <structname>v4l2_crop</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>&v4l2-buf-type;</entry>
- <entry><structfield>type</structfield></entry>
- <entry>Type of the data stream, set by the application.
-Only these types are valid here: <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>,
-<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>,
-<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>, and custom (driver
-defined) types with code <constant>V4L2_BUF_TYPE_PRIVATE</constant>
-and higher.</entry>
- </row>
- <row>
- <entry>&v4l2-rect;</entry>
- <entry><structfield>c</structfield></entry>
- <entry>Cropping rectangle. The same co-ordinate system as
-for &v4l2-cropcap; <structfield>bounds</structfield> is used.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>Cropping is not supported.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-ctrl.xml b/Documentation/DocBook/v4l/vidioc-g-ctrl.xml
deleted file mode 100644
index 8b5e6ff..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-ctrl.xml
+++ /dev/null
@@ -1,130 +0,0 @@
-<refentry id="vidioc-g-ctrl">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_CTRL, VIDIOC_S_CTRL</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_CTRL</refname>
- <refname>VIDIOC_S_CTRL</refname>
- <refpurpose>Get or set the value of a control</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_control
-*<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_CTRL, VIDIOC_S_CTRL</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To get the current value of a control applications
-initialize the <structfield>id</structfield> field of a struct
-<structname>v4l2_control</structname> and call the
-<constant>VIDIOC_G_CTRL</constant> ioctl with a pointer to this
-structure. To change the value of a control applications initialize
-the <structfield>id</structfield> and <structfield>value</structfield>
-fields of a struct <structname>v4l2_control</structname> and call the
-<constant>VIDIOC_S_CTRL</constant> ioctl.</para>
-
- <para>When the <structfield>id</structfield> is invalid drivers
-return an &EINVAL;. When the <structfield>value</structfield> is out
-of bounds drivers can choose to take the closest valid value or return
-an &ERANGE;, whatever seems more appropriate. However,
-<constant>VIDIOC_S_CTRL</constant> is a write-only ioctl, it does not
-return the actual new value.</para>
-
- <para>These ioctls work only with user controls. For other
-control classes the &VIDIOC-G-EXT-CTRLS;, &VIDIOC-S-EXT-CTRLS; or
-&VIDIOC-TRY-EXT-CTRLS; must be used.</para>
-
- <table pgwide="1" frame="none" id="v4l2-control">
- <title>struct <structname>v4l2_control</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>id</structfield></entry>
- <entry>Identifies the control, set by the
-application.</entry>
- </row>
- <row>
- <entry>__s32</entry>
- <entry><structfield>value</structfield></entry>
- <entry>New value or current value.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The &v4l2-control; <structfield>id</structfield> is
-invalid.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>ERANGE</errorcode></term>
- <listitem>
- <para>The &v4l2-control; <structfield>value</structfield>
-is out of bounds.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The control is temporarily not changeable, possibly
-because another applications took over control of the device function
-this control belongs to.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-dv-preset.xml b/Documentation/DocBook/v4l/vidioc-g-dv-preset.xml
deleted file mode 100644
index d733721..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-dv-preset.xml
+++ /dev/null
@@ -1,110 +0,0 @@
-<refentry id="vidioc-g-dv-preset">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_DV_PRESET, VIDIOC_S_DV_PRESET</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_DV_PRESET</refname>
- <refname>VIDIOC_S_DV_PRESET</refname>
- <refpurpose>Query or select the DV preset of the current input or output</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_dv_preset *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_DV_PRESET, VIDIOC_S_DV_PRESET</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
- <para>To query and select the current DV preset, applications
-use the <constant>VIDIOC_G_DV_PRESET</constant> and <constant>VIDIOC_S_DV_PRESET</constant>
-ioctls which take a pointer to a &v4l2-dv-preset; type as argument.
-Applications must zero the reserved array in &v4l2-dv-preset;.
-<constant>VIDIOC_G_DV_PRESET</constant> returns a dv preset in the field
-<structfield>preset</structfield> of &v4l2-dv-preset;.</para>
-
- <para><constant>VIDIOC_S_DV_PRESET</constant> accepts a pointer to a &v4l2-dv-preset;
-that has the preset value to be set. Applications must zero the reserved array in &v4l2-dv-preset;.
-If the preset is not supported, it returns an &EINVAL; </para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>This ioctl is not supported, or the
-<constant>VIDIOC_S_DV_PRESET</constant>,<constant>VIDIOC_S_DV_PRESET</constant> parameter was unsuitable.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The device is busy and therefore can not change the preset.</para>
- </listitem>
- </varlistentry>
- </variablelist>
-
- <table pgwide="1" frame="none" id="v4l2-dv-preset">
- <title>struct <structname>v4l2_dv_preset</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>preset</structfield></entry>
- <entry>Preset value to represent the digital video timings</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved[4]</structfield></entry>
- <entry>Reserved fields for future use</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-dv-timings.xml b/Documentation/DocBook/v4l/vidioc-g-dv-timings.xml
deleted file mode 100644
index d5ec6ab..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-dv-timings.xml
+++ /dev/null
@@ -1,223 +0,0 @@
-<refentry id="vidioc-g-dv-timings">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_DV_TIMINGS, VIDIOC_S_DV_TIMINGS</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_DV_TIMINGS</refname>
- <refname>VIDIOC_S_DV_TIMINGS</refname>
- <refpurpose>Get or set custom DV timings for input or output</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_dv_timings *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_DV_TIMINGS, VIDIOC_S_DV_TIMINGS</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
- <para>To set custom DV timings for the input or output, applications use the
-<constant>VIDIOC_S_DV_TIMINGS</constant> ioctl and to get the current custom timings,
-applications use the <constant>VIDIOC_G_DV_TIMINGS</constant> ioctl. The detailed timing
-information is filled in using the structure &v4l2-dv-timings;. These ioctls take
-a pointer to the &v4l2-dv-timings; structure as argument. If the ioctl is not supported
-or the timing values are not correct, the driver returns &EINVAL;.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>This ioctl is not supported, or the
-<constant>VIDIOC_S_DV_TIMINGS</constant> parameter was unsuitable.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The device is busy and therefore can not change the timings.</para>
- </listitem>
- </varlistentry>
- </variablelist>
-
- <table pgwide="1" frame="none" id="v4l2-bt-timings">
- <title>struct <structname>v4l2_bt_timings</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>width</structfield></entry>
- <entry>Width of the active video in pixels</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>height</structfield></entry>
- <entry>Height of the active video in lines</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>interlaced</structfield></entry>
- <entry>Progressive (0) or interlaced (1)</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>polarities</structfield></entry>
- <entry>This is a bit mask that defines polarities of sync signals.
-bit 0 (V4L2_DV_VSYNC_POS_POL) is for vertical sync polarity and bit 1 (V4L2_DV_HSYNC_POS_POL) is for horizontal sync polarity. If the bit is set
-(1) it is positive polarity and if is cleared (0), it is negative polarity.</entry>
- </row>
- <row>
- <entry>__u64</entry>
- <entry><structfield>pixelclock</structfield></entry>
- <entry>Pixel clock in Hz. Ex. 74.25MHz->74250000</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>hfrontporch</structfield></entry>
- <entry>Horizontal front porch in pixels</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>hsync</structfield></entry>
- <entry>Horizontal sync length in pixels</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>hbackporch</structfield></entry>
- <entry>Horizontal back porch in pixels</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>vfrontporch</structfield></entry>
- <entry>Vertical front porch in lines</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>vsync</structfield></entry>
- <entry>Vertical sync length in lines</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>vbackporch</structfield></entry>
- <entry>Vertical back porch in lines</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>il_vfrontporch</structfield></entry>
- <entry>Vertical front porch in lines for bottom field of interlaced field formats</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>il_vsync</structfield></entry>
- <entry>Vertical sync length in lines for bottom field of interlaced field formats</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>il_vbackporch</structfield></entry>
- <entry>Vertical back porch in lines for bottom field of interlaced field formats</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-dv-timings">
- <title>struct <structname>v4l2_dv_timings</structname></title>
- <tgroup cols="4">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>type</structfield></entry>
- <entry></entry>
- <entry>Type of DV timings as listed in <xref linkend="dv-timing-types"/>.</entry>
- </row>
- <row>
- <entry>union</entry>
- <entry><structfield></structfield></entry>
- <entry></entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-bt-timings;</entry>
- <entry><structfield>bt</structfield></entry>
- <entry>Timings defined by BT.656/1120 specifications</entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[32]</entry>
- <entry></entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="dv-timing-types">
- <title>DV Timing types</title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>Timing type</entry>
- <entry>value</entry>
- <entry>Description</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- </row>
- <row>
- <entry>V4L2_DV_BT_656_1120</entry>
- <entry>0</entry>
- <entry>BT.656/1120 timings</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-enc-index.xml b/Documentation/DocBook/v4l/vidioc-g-enc-index.xml
deleted file mode 100644
index 9f242e4..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-enc-index.xml
+++ /dev/null
@@ -1,213 +0,0 @@
-<refentry id="vidioc-g-enc-index">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_ENC_INDEX</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_ENC_INDEX</refname>
- <refpurpose>Get meta data about a compressed video stream</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_enc_idx *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_ENC_INDEX</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <note>
- <title>Experimental</title>
-
- <para>This is an <link linkend="experimental">experimental</link>
-interface and may change in the future.</para>
- </note>
-
- <para>The <constant>VIDIOC_G_ENC_INDEX</constant> ioctl provides
-meta data about a compressed video stream the same or another
-application currently reads from the driver, which is useful for
-random access into the stream without decoding it.</para>
-
- <para>To read the data applications must call
-<constant>VIDIOC_G_ENC_INDEX</constant> with a pointer to a
-&v4l2-enc-idx;. On success the driver fills the
-<structfield>entry</structfield> array, stores the number of elements
-written in the <structfield>entries</structfield> field, and
-initializes the <structfield>entries_cap</structfield> field.</para>
-
- <para>Each element of the <structfield>entry</structfield> array
-contains meta data about one picture. A
-<constant>VIDIOC_G_ENC_INDEX</constant> call reads up to
-<constant>V4L2_ENC_IDX_ENTRIES</constant> entries from a driver
-buffer, which can hold up to <structfield>entries_cap</structfield>
-entries. This number can be lower or higher than
-<constant>V4L2_ENC_IDX_ENTRIES</constant>, but not zero. When the
-application fails to read the meta data in time the oldest entries
-will be lost. When the buffer is empty or no capturing/encoding is in
-progress, <structfield>entries</structfield> will be zero.</para>
-
- <para>Currently this ioctl is only defined for MPEG-2 program
-streams and video elementary streams.</para>
-
- <table pgwide="1" frame="none" id="v4l2-enc-idx">
- <title>struct <structname>v4l2_enc_idx</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>entries</structfield></entry>
- <entry>The number of entries the driver stored in the
-<structfield>entry</structfield> array.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>entries_cap</structfield></entry>
- <entry>The number of entries the driver can
-buffer. Must be greater than zero.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[4]</entry>
- <entry spanname="hspan">Reserved for future extensions.
-Drivers must set the array to zero.</entry>
- </row>
- <row>
- <entry>&v4l2-enc-idx-entry;</entry>
- <entry><structfield>entry</structfield>[<constant>V4L2_ENC_IDX_ENTRIES</constant>]</entry>
- <entry>Meta data about a compressed video stream. Each
-element of the array corresponds to one picture, sorted in ascending
-order by their <structfield>offset</structfield>.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-enc-idx-entry">
- <title>struct <structname>v4l2_enc_idx_entry</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u64</entry>
- <entry><structfield>offset</structfield></entry>
- <entry>The offset in bytes from the beginning of the
-compressed video stream to the beginning of this picture, that is a
-<wordasword>PES packet header</wordasword> as defined in <xref
- linkend="mpeg2part1" /> or a <wordasword>picture
-header</wordasword> as defined in <xref linkend="mpeg2part2" />. When
-the encoder is stopped, the driver resets the offset to zero.</entry>
- </row>
- <row>
- <entry>__u64</entry>
- <entry><structfield>pts</structfield></entry>
- <entry>The 33 bit <wordasword>Presentation Time
-Stamp</wordasword> of this picture as defined in <xref
- linkend="mpeg2part1" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>length</structfield></entry>
- <entry>The length of this picture in bytes.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>flags</structfield></entry>
- <entry>Flags containing the coding type of this picture, see <xref
- linkend="enc-idx-flags" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[2]</entry>
- <entry>Reserved for future extensions.
-Drivers must set the array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="enc-idx-flags">
- <title>Index Entry Flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_ENC_IDX_FRAME_I</constant></entry>
- <entry>0x00</entry>
- <entry>This is an Intra-coded picture.</entry>
- </row>
- <row>
- <entry><constant>V4L2_ENC_IDX_FRAME_P</constant></entry>
- <entry>0x01</entry>
- <entry>This is a Predictive-coded picture.</entry>
- </row>
- <row>
- <entry><constant>V4L2_ENC_IDX_FRAME_B</constant></entry>
- <entry>0x02</entry>
- <entry>This is a Bidirectionally predictive-coded
-picture.</entry>
- </row>
- <row>
- <entry><constant>V4L2_ENC_IDX_FRAME_MASK</constant></entry>
- <entry>0x0F</entry>
- <entry><wordasword>AND</wordasword> the flags field with
-this mask to obtain the picture coding type.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The driver does not support this ioctl.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-ext-ctrls.xml b/Documentation/DocBook/v4l/vidioc-g-ext-ctrls.xml
deleted file mode 100644
index 3aa7f8f..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-ext-ctrls.xml
+++ /dev/null
@@ -1,307 +0,0 @@
-<refentry id="vidioc-g-ext-ctrls">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_EXT_CTRLS, VIDIOC_S_EXT_CTRLS,
-VIDIOC_TRY_EXT_CTRLS</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_EXT_CTRLS</refname>
- <refname>VIDIOC_S_EXT_CTRLS</refname>
- <refname>VIDIOC_TRY_EXT_CTRLS</refname>
- <refpurpose>Get or set the value of several controls, try control
-values</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_ext_controls
-*<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_EXT_CTRLS, VIDIOC_S_EXT_CTRLS,
-VIDIOC_TRY_EXT_CTRLS</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>These ioctls allow the caller to get or set multiple
-controls atomically. Control IDs are grouped into control classes (see
-<xref linkend="ctrl-class" />) and all controls in the control array
-must belong to the same control class.</para>
-
- <para>Applications must always fill in the
-<structfield>count</structfield>,
-<structfield>ctrl_class</structfield>,
-<structfield>controls</structfield> and
-<structfield>reserved</structfield> fields of &v4l2-ext-controls;, and
-initialize the &v4l2-ext-control; array pointed to by the
-<structfield>controls</structfield> fields.</para>
-
- <para>To get the current value of a set of controls applications
-initialize the <structfield>id</structfield>,
-<structfield>size</structfield> and <structfield>reserved2</structfield> fields
-of each &v4l2-ext-control; and call the
-<constant>VIDIOC_G_EXT_CTRLS</constant> ioctl. String controls controls
-must also set the <structfield>string</structfield> field.</para>
-
- <para>If the <structfield>size</structfield> is too small to
-receive the control result (only relevant for pointer-type controls
-like strings), then the driver will set <structfield>size</structfield>
-to a valid value and return an &ENOSPC;. You should re-allocate the
-string memory to this new size and try again. It is possible that the
-same issue occurs again if the string has grown in the meantime. It is
-recommended to call &VIDIOC-QUERYCTRL; first and use
-<structfield>maximum</structfield>+1 as the new <structfield>size</structfield>
-value. It is guaranteed that that is sufficient memory.
-</para>
-
- <para>To change the value of a set of controls applications
-initialize the <structfield>id</structfield>, <structfield>size</structfield>,
-<structfield>reserved2</structfield> and
-<structfield>value/string</structfield> fields of each &v4l2-ext-control; and
-call the <constant>VIDIOC_S_EXT_CTRLS</constant> ioctl. The controls
-will only be set if <emphasis>all</emphasis> control values are
-valid.</para>
-
- <para>To check if a set of controls have correct values applications
-initialize the <structfield>id</structfield>, <structfield>size</structfield>,
-<structfield>reserved2</structfield> and
-<structfield>value/string</structfield> fields of each &v4l2-ext-control; and
-call the <constant>VIDIOC_TRY_EXT_CTRLS</constant> ioctl. It is up to
-the driver whether wrong values are automatically adjusted to a valid
-value or if an error is returned.</para>
-
- <para>When the <structfield>id</structfield> or
-<structfield>ctrl_class</structfield> is invalid drivers return an
-&EINVAL;. When the value is out of bounds drivers can choose to take
-the closest valid value or return an &ERANGE;, whatever seems more
-appropriate. In the first case the new value is set in
-&v4l2-ext-control;.</para>
-
- <para>The driver will only set/get these controls if all control
-values are correct. This prevents the situation where only some of the
-controls were set/get. Only low-level errors (⪚ a failed i2c
-command) can still cause this situation.</para>
-
- <table pgwide="1" frame="none" id="v4l2-ext-control">
- <title>struct <structname>v4l2_ext_control</structname></title>
- <tgroup cols="4">
- &cs-ustr;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>id</structfield></entry>
- <entry></entry>
- <entry>Identifies the control, set by the
-application.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>size</structfield></entry>
- <entry></entry>
- <entry>The total size in bytes of the payload of this
-control. This is normally 0, but for pointer controls this should be
-set to the size of the memory containing the payload, or that will
-receive the payload. If <constant>VIDIOC_G_EXT_CTRLS</constant> finds
-that this value is less than is required to store
-the payload result, then it is set to a value large enough to store the
-payload result and ENOSPC is returned. Note that for string controls
-this <structfield>size</structfield> field should not be confused with the length of the string.
-This field refers to the size of the memory that contains the string.
-The actual <emphasis>length</emphasis> of the string may well be much smaller.
-</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved2</structfield>[1]</entry>
- <entry></entry>
- <entry>Reserved for future extensions. Drivers and
-applications must set the array to zero.</entry>
- </row>
- <row>
- <entry>union</entry>
- <entry>(anonymous)</entry>
- </row>
- <row>
- <entry></entry>
- <entry>__s32</entry>
- <entry><structfield>value</structfield></entry>
- <entry>New value or current value.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>__s64</entry>
- <entry><structfield>value64</structfield></entry>
- <entry>New value or current value.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>char *</entry>
- <entry><structfield>string</structfield></entry>
- <entry>A pointer to a string.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-ext-controls">
- <title>struct <structname>v4l2_ext_controls</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>ctrl_class</structfield></entry>
- <entry>The control class to which all controls belong, see
-<xref linkend="ctrl-class" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>count</structfield></entry>
- <entry>The number of controls in the controls array. May
-also be zero.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>error_idx</structfield></entry>
- <entry>Set by the driver in case of an error. It is the
-index of the control causing the error or equal to 'count' when the
-error is not associated with a particular control. Undefined when the
-ioctl returns 0 (success).</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[2]</entry>
- <entry>Reserved for future extensions. Drivers and
-applications must set the array to zero.</entry>
- </row>
- <row>
- <entry>&v4l2-ext-control; *</entry>
- <entry><structfield>controls</structfield></entry>
- <entry>Pointer to an array of
-<structfield>count</structfield> v4l2_ext_control structures. Ignored
-if <structfield>count</structfield> equals zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="ctrl-class">
- <title>Control classes</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_CTRL_CLASS_USER</constant></entry>
- <entry>0x980000</entry>
- <entry>The class containing user controls. These controls
-are described in <xref linkend="control" />. All controls that can be set
-using the &VIDIOC-S-CTRL; and &VIDIOC-G-CTRL; ioctl belong to this
-class.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_CLASS_MPEG</constant></entry>
- <entry>0x990000</entry>
- <entry>The class containing MPEG compression controls.
-These controls are described in <xref
- linkend="mpeg-controls" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_CLASS_CAMERA</constant></entry>
- <entry>0x9a0000</entry>
- <entry>The class containing camera controls.
-These controls are described in <xref
- linkend="camera-controls" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_CLASS_FM_TX</constant></entry>
- <entry>0x9b0000</entry>
- <entry>The class containing FM Transmitter (FM TX) controls.
-These controls are described in <xref
- linkend="fm-tx-controls" />.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The &v4l2-ext-control; <structfield>id</structfield>
-is invalid or the &v4l2-ext-controls;
-<structfield>ctrl_class</structfield> is invalid. This error code is
-also returned by the <constant>VIDIOC_S_EXT_CTRLS</constant> and
-<constant>VIDIOC_TRY_EXT_CTRLS</constant> ioctls if two or more
-control values are in conflict.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>ERANGE</errorcode></term>
- <listitem>
- <para>The &v4l2-ext-control; <structfield>value</structfield>
-is out of bounds.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The control is temporarily not changeable, possibly
-because another applications took over control of the device function
-this control belongs to.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>ENOSPC</errorcode></term>
- <listitem>
- <para>The space reserved for the control's payload is insufficient.
-The field <structfield>size</structfield> is set to a value that is enough
-to store the payload and this error code is returned.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-fbuf.xml b/Documentation/DocBook/v4l/vidioc-g-fbuf.xml
deleted file mode 100644
index e7dda48..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-fbuf.xml
+++ /dev/null
@@ -1,473 +0,0 @@
-<refentry id="vidioc-g-fbuf">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_FBUF, VIDIOC_S_FBUF</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_FBUF</refname>
- <refname>VIDIOC_S_FBUF</refname>
- <refpurpose>Get or set frame buffer overlay parameters</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_framebuffer *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>const struct v4l2_framebuffer *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_FBUF, VIDIOC_S_FBUF</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>Applications can use the <constant>VIDIOC_G_FBUF</constant> and
-<constant>VIDIOC_S_FBUF</constant> ioctl to get and set the
-framebuffer parameters for a <link linkend="overlay">Video
-Overlay</link> or <link linkend="osd">Video Output Overlay</link>
-(OSD). The type of overlay is implied by the device type (capture or
-output device) and can be determined with the &VIDIOC-QUERYCAP; ioctl.
-One <filename>/dev/videoN</filename> device must not support both
-kinds of overlay.</para>
-
- <para>The V4L2 API distinguishes destructive and non-destructive
-overlays. A destructive overlay copies captured video images into the
-video memory of a graphics card. A non-destructive overlay blends
-video images into a VGA signal or graphics into a video signal.
-<wordasword>Video Output Overlays</wordasword> are always
-non-destructive.</para>
-
- <para>To get the current parameters applications call the
-<constant>VIDIOC_G_FBUF</constant> ioctl with a pointer to a
-<structname>v4l2_framebuffer</structname> structure. The driver fills
-all fields of the structure or returns an &EINVAL; when overlays are
-not supported.</para>
-
- <para>To set the parameters for a <wordasword>Video Output
-Overlay</wordasword>, applications must initialize the
-<structfield>flags</structfield> field of a struct
-<structname>v4l2_framebuffer</structname>. Since the framebuffer is
-implemented on the TV card all other parameters are determined by the
-driver. When an application calls <constant>VIDIOC_S_FBUF</constant>
-with a pointer to this structure, the driver prepares for the overlay
-and returns the framebuffer parameters as
-<constant>VIDIOC_G_FBUF</constant> does, or it returns an error
-code.</para>
-
- <para>To set the parameters for a <wordasword>non-destructive
-Video Overlay</wordasword>, applications must initialize the
-<structfield>flags</structfield> field, the
-<structfield>fmt</structfield> substructure, and call
-<constant>VIDIOC_S_FBUF</constant>. Again the driver prepares for the
-overlay and returns the framebuffer parameters as
-<constant>VIDIOC_G_FBUF</constant> does, or it returns an error
-code.</para>
-
- <para>For a <wordasword>destructive Video Overlay</wordasword>
-applications must additionally provide a
-<structfield>base</structfield> address. Setting up a DMA to a
-random memory location can jeopardize the system security, its
-stability or even damage the hardware, therefore only the superuser
-can set the parameters for a destructive video overlay.</para>
-
- <!-- NB v4l2_pix_format is also specified in pixfmt.sgml.-->
-
- <table pgwide="1" frame="none" id="v4l2-framebuffer">
- <title>struct <structname>v4l2_framebuffer</structname></title>
- <tgroup cols="4">
- &cs-ustr;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>capability</structfield></entry>
- <entry></entry>
- <entry>Overlay capability flags set by the driver, see
-<xref linkend="framebuffer-cap" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>flags</structfield></entry>
- <entry></entry>
- <entry>Overlay control flags set by application and
-driver, see <xref linkend="framebuffer-flags" /></entry>
- </row>
- <row>
- <entry>void *</entry>
- <entry><structfield>base</structfield></entry>
- <entry></entry>
- <entry>Physical base address of the framebuffer,
-that is the address of the pixel in the top left corner of the
-framebuffer.<footnote><para>A physical base address may not suit all
-platforms. GK notes in theory we should pass something like PCI device
-+ memory region + offset instead. If you encounter problems please
-discuss on the linux-media mailing list: &v4l-ml;.</para></footnote></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>This field is irrelevant to
-<wordasword>non-destructive Video Overlays</wordasword>. For
-<wordasword>destructive Video Overlays</wordasword> applications must
-provide a base address. The driver may accept only base addresses
-which are a multiple of two, four or eight bytes. For
-<wordasword>Video Output Overlays</wordasword> the driver must return
-a valid base address, so applications can find the corresponding Linux
-framebuffer device (see <xref linkend="osd" />).</entry>
- </row>
- <row>
- <entry>&v4l2-pix-format;</entry>
- <entry><structfield>fmt</structfield></entry>
- <entry></entry>
- <entry>Layout of the frame buffer. The
-<structname>v4l2_pix_format</structname> structure is defined in <xref
-linkend="pixfmt" />, for clarification the fields and acceptable values
- are listed below:</entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u32</entry>
- <entry><structfield>width</structfield></entry>
- <entry>Width of the frame buffer in pixels.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u32</entry>
- <entry><structfield>height</structfield></entry>
- <entry>Height of the frame buffer in pixels.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u32</entry>
- <entry><structfield>pixelformat</structfield></entry>
- <entry>The pixel format of the
-framebuffer.</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>For <wordasword>non-destructive Video
-Overlays</wordasword> this field only defines a format for the
-&v4l2-window; <structfield>chromakey</structfield> field.</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>For <wordasword>destructive Video
-Overlays</wordasword> applications must initialize this field. For
-<wordasword>Video Output Overlays</wordasword> the driver must return
-a valid format.</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- <entry>Usually this is an RGB format (for example
-<link linkend="V4L2-PIX-FMT-RGB565"><constant>V4L2_PIX_FMT_RGB565</constant></link>)
-but YUV formats (only packed YUV formats when chroma keying is used,
-not including <constant>V4L2_PIX_FMT_YUYV</constant> and
-<constant>V4L2_PIX_FMT_UYVY</constant>) and the
-<constant>V4L2_PIX_FMT_PAL8</constant> format are also permitted. The
-behavior of the driver when an application requests a compressed
-format is undefined. See <xref linkend="pixfmt" /> for information on
-pixel formats.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-field;</entry>
- <entry><structfield>field</structfield></entry>
- <entry>Drivers and applications shall ignore this field.
-If applicable, the field order is selected with the &VIDIOC-S-FMT;
-ioctl, using the <structfield>field</structfield> field of
-&v4l2-window;.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u32</entry>
- <entry><structfield>bytesperline</structfield></entry>
- <entry>Distance in bytes between the leftmost pixels in
-two adjacent lines.</entry>
- </row>
- <row>
- <entry spanname="hspan"><para>This field is irrelevant to
-<wordasword>non-destructive Video
-Overlays</wordasword>.</para><para>For <wordasword>destructive Video
-Overlays</wordasword> both applications and drivers can set this field
-to request padding bytes at the end of each line. Drivers however may
-ignore the requested value, returning <structfield>width</structfield>
-times bytes-per-pixel or a larger value required by the hardware. That
-implies applications can just set this field to zero to get a
-reasonable default.</para><para>For <wordasword>Video Output
-Overlays</wordasword> the driver must return a valid
-value.</para><para>Video hardware may access padding bytes, therefore
-they must reside in accessible memory. Consider for example the case
-where padding bytes after the last line of an image cross a system
-page boundary. Capture devices may write padding bytes, the value is
-undefined. Output devices ignore the contents of padding
-bytes.</para><para>When the image format is planar the
-<structfield>bytesperline</structfield> value applies to the largest
-plane and is divided by the same factor as the
-<structfield>width</structfield> field for any smaller planes. For
-example the Cb and Cr planes of a YUV 4:2:0 image have half as many
-padding bytes following each line as the Y plane. To avoid ambiguities
-drivers must return a <structfield>bytesperline</structfield> value
-rounded up to a multiple of the scale factor.</para></entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u32</entry>
- <entry><structfield>sizeimage</structfield></entry>
- <entry><para>This field is irrelevant to
-<wordasword>non-destructive Video Overlays</wordasword>. For
-<wordasword>destructive Video Overlays</wordasword> applications must
-initialize this field. For <wordasword>Video Output
-Overlays</wordasword> the driver must return a valid
-format.</para><para>Together with <structfield>base</structfield> it
-defines the framebuffer memory accessible by the
-driver.</para></entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-colorspace;</entry>
- <entry><structfield>colorspace</structfield></entry>
- <entry>This information supplements the
-<structfield>pixelformat</structfield> and must be set by the driver,
-see <xref linkend="colorspaces" />.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u32</entry>
- <entry><structfield>priv</structfield></entry>
- <entry>Reserved for additional information about custom
-(driver defined) formats. When not used drivers and applications must
-set this field to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="framebuffer-cap">
- <title>Frame Buffer Capability Flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_FBUF_CAP_EXTERNOVERLAY</constant></entry>
- <entry>0x0001</entry>
- <entry>The device is capable of non-destructive overlays.
-When the driver clears this flag, only destructive overlays are
-supported. There are no drivers yet which support both destructive and
-non-destructive overlays.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FBUF_CAP_CHROMAKEY</constant></entry>
- <entry>0x0002</entry>
- <entry>The device supports clipping by chroma-keying the
-images. That is, image pixels replace pixels in the VGA or video
-signal only where the latter assume a certain color. Chroma-keying
-makes no sense for destructive overlays.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FBUF_CAP_LIST_CLIPPING</constant></entry>
- <entry>0x0004</entry>
- <entry>The device supports clipping using a list of clip
-rectangles.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FBUF_CAP_BITMAP_CLIPPING</constant></entry>
- <entry>0x0008</entry>
- <entry>The device supports clipping using a bit mask.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FBUF_CAP_LOCAL_ALPHA</constant></entry>
- <entry>0x0010</entry>
- <entry>The device supports clipping/blending using the
-alpha channel of the framebuffer or VGA signal. Alpha blending makes
-no sense for destructive overlays.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FBUF_CAP_GLOBAL_ALPHA</constant></entry>
- <entry>0x0020</entry>
- <entry>The device supports alpha blending using a global
-alpha value. Alpha blending makes no sense for destructive overlays.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FBUF_CAP_LOCAL_INV_ALPHA</constant></entry>
- <entry>0x0040</entry>
- <entry>The device supports clipping/blending using the
-inverted alpha channel of the framebuffer or VGA signal. Alpha
-blending makes no sense for destructive overlays.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FBUF_CAP_SRC_CHROMAKEY</constant></entry>
- <entry>0x0080</entry>
- <entry>The device supports Source Chroma-keying. Framebuffer pixels
-with the chroma-key colors are replaced by video pixels, which is exactly opposite of
-<constant>V4L2_FBUF_CAP_CHROMAKEY</constant></entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="framebuffer-flags">
- <title>Frame Buffer Flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_FBUF_FLAG_PRIMARY</constant></entry>
- <entry>0x0001</entry>
- <entry>The framebuffer is the primary graphics surface.
-In other words, the overlay is destructive. [?]</entry>
- </row>
- <row>
- <entry><constant>V4L2_FBUF_FLAG_OVERLAY</constant></entry>
- <entry>0x0002</entry>
- <entry>The frame buffer is an overlay surface the same
-size as the capture. [?]</entry>
- </row>
- <row>
- <entry spanname="hspan">The purpose of
-<constant>V4L2_FBUF_FLAG_PRIMARY</constant> and
-<constant>V4L2_FBUF_FLAG_OVERLAY</constant> was never quite clear.
-Most drivers seem to ignore these flags. For compatibility with the
-<wordasword>bttv</wordasword> driver applications should set the
-<constant>V4L2_FBUF_FLAG_OVERLAY</constant> flag.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FBUF_FLAG_CHROMAKEY</constant></entry>
- <entry>0x0004</entry>
- <entry>Use chroma-keying. The chroma-key color is
-determined by the <structfield>chromakey</structfield> field of
-&v4l2-window; and negotiated with the &VIDIOC-S-FMT; ioctl, see <xref
- linkend="overlay" />
-and
- <xref linkend="osd" />.</entry>
- </row>
- <row>
- <entry spanname="hspan">There are no flags to enable
-clipping using a list of clip rectangles or a bitmap. These methods
-are negotiated with the &VIDIOC-S-FMT; ioctl, see <xref
- linkend="overlay" /> and <xref linkend="osd" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FBUF_FLAG_LOCAL_ALPHA</constant></entry>
- <entry>0x0008</entry>
- <entry>Use the alpha channel of the framebuffer to clip or
-blend framebuffer pixels with video images. The blend
-function is: output = framebuffer pixel * alpha + video pixel * (1 -
-alpha). The actual alpha depth depends on the framebuffer pixel
-format.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FBUF_FLAG_GLOBAL_ALPHA</constant></entry>
- <entry>0x0010</entry>
- <entry>Use a global alpha value to blend the framebuffer
-with video images. The blend function is: output = (framebuffer pixel
-* alpha + video pixel * (255 - alpha)) / 255. The alpha value is
-determined by the <structfield>global_alpha</structfield> field of
-&v4l2-window; and negotiated with the &VIDIOC-S-FMT; ioctl, see <xref
- linkend="overlay" />
-and <xref linkend="osd" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FBUF_FLAG_LOCAL_INV_ALPHA</constant></entry>
- <entry>0x0020</entry>
- <entry>Like
-<constant>V4L2_FBUF_FLAG_LOCAL_ALPHA</constant>, use the alpha channel
-of the framebuffer to clip or blend framebuffer pixels with video
-images, but with an inverted alpha value. The blend function is:
-output = framebuffer pixel * (1 - alpha) + video pixel * alpha. The
-actual alpha depth depends on the framebuffer pixel format.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FBUF_FLAG_SRC_CHROMAKEY</constant></entry>
- <entry>0x0040</entry>
- <entry>Use source chroma-keying. The source chroma-key color is
-determined by the <structfield>chromakey</structfield> field of
-&v4l2-window; and negotiated with the &VIDIOC-S-FMT; ioctl, see <xref
-linkend="overlay" /> and <xref linkend="osd" />.
-Both chroma-keying are mutual exclusive to each other, so same
-<structfield>chromakey</structfield> field of &v4l2-window; is being used.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EPERM</errorcode></term>
- <listitem>
- <para><constant>VIDIOC_S_FBUF</constant> can only be called
-by a privileged user to negotiate the parameters for a destructive
-overlay.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The framebuffer parameters cannot be changed at this
-time because overlay is already enabled, or capturing is enabled
-and the hardware cannot capture and overlay simultaneously.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The ioctl is not supported or the
-<constant>VIDIOC_S_FBUF</constant> parameters are unsuitable.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-fmt.xml b/Documentation/DocBook/v4l/vidioc-g-fmt.xml
deleted file mode 100644
index a4ae59b..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-fmt.xml
+++ /dev/null
@@ -1,212 +0,0 @@
-<refentry id="vidioc-g-fmt">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_FMT, VIDIOC_S_FMT,
-VIDIOC_TRY_FMT</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_FMT</refname>
- <refname>VIDIOC_S_FMT</refname>
- <refname>VIDIOC_TRY_FMT</refname>
- <refpurpose>Get or set the data format, try a format</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_format
-*<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_FMT, VIDIOC_S_FMT, VIDIOC_TRY_FMT</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>These ioctls are used to negotiate the format of data
-(typically image format) exchanged between driver and
-application.</para>
-
- <para>To query the current parameters applications set the
-<structfield>type</structfield> field of a struct
-<structname>v4l2_format</structname> to the respective buffer (stream)
-type. For example video capture devices use
-<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant> or
-<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant>. When the application
-calls the <constant>VIDIOC_G_FMT</constant> ioctl with a pointer to
-this structure the driver fills the respective member of the
-<structfield>fmt</structfield> union. In case of video capture devices
-that is either the &v4l2-pix-format; <structfield>pix</structfield> or
-the &v4l2-pix-format-mplane; <structfield>pix_mp</structfield> member.
-When the requested buffer type is not supported drivers return an
-&EINVAL;.</para>
-
- <para>To change the current format parameters applications
-initialize the <structfield>type</structfield> field and all
-fields of the respective <structfield>fmt</structfield>
-union member. For details see the documentation of the various devices
-types in <xref linkend="devices" />. Good practice is to query the
-current parameters first, and to
-modify only those parameters not suitable for the application. When
-the application calls the <constant>VIDIOC_S_FMT</constant> ioctl
-with a pointer to a <structname>v4l2_format</structname> structure
-the driver checks
-and adjusts the parameters against hardware abilities. Drivers
-should not return an error code unless the input is ambiguous, this is
-a mechanism to fathom device capabilities and to approach parameters
-acceptable for both the application and driver. On success the driver
-may program the hardware, allocate resources and generally prepare for
-data exchange.
-Finally the <constant>VIDIOC_S_FMT</constant> ioctl returns the
-current format parameters as <constant>VIDIOC_G_FMT</constant> does.
-Very simple, inflexible devices may even ignore all input and always
-return the default parameters. However all V4L2 devices exchanging
-data with the application must implement the
-<constant>VIDIOC_G_FMT</constant> and
-<constant>VIDIOC_S_FMT</constant> ioctl. When the requested buffer
-type is not supported drivers return an &EINVAL; on a
-<constant>VIDIOC_S_FMT</constant> attempt. When I/O is already in
-progress or the resource is not available for other reasons drivers
-return the &EBUSY;.</para>
-
- <para>The <constant>VIDIOC_TRY_FMT</constant> ioctl is equivalent
-to <constant>VIDIOC_S_FMT</constant> with one exception: it does not
-change driver state. It can also be called at any time, never
-returning <errorcode>EBUSY</errorcode>. This function is provided to
-negotiate parameters, to learn about hardware limitations, without
-disabling I/O or possibly time consuming hardware preparations.
-Although strongly recommended drivers are not required to implement
-this ioctl.</para>
-
- <table pgwide="1" frame="none" id="v4l2-format">
- <title>struct <structname>v4l2_format</structname></title>
- <tgroup cols="4">
- <colspec colname="c1" />
- <colspec colname="c2" />
- <colspec colname="c3" />
- <colspec colname="c4" />
- <tbody valign="top">
- <row>
- <entry>&v4l2-buf-type;</entry>
- <entry><structfield>type</structfield></entry>
- <entry></entry>
- <entry>Type of the data stream, see <xref
- linkend="v4l2-buf-type" />.</entry>
- </row>
- <row>
- <entry>union</entry>
- <entry><structfield>fmt</structfield></entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-pix-format;</entry>
- <entry><structfield>pix</structfield></entry>
- <entry>Definition of an image format, see <xref
- linkend="pixfmt" />, used by video capture and output
-devices.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-pix-format-mplane;</entry>
- <entry><structfield>pix_mp</structfield></entry>
- <entry>Definition of an image format, see <xref
- linkend="pixfmt" />, used by video capture and output
-devices that support the <link linkend="planar-apis">multi-planar
-version of the API</link>.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-window;</entry>
- <entry><structfield>win</structfield></entry>
- <entry>Definition of an overlaid image, see <xref
- linkend="overlay" />, used by video overlay devices.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-vbi-format;</entry>
- <entry><structfield>vbi</structfield></entry>
- <entry>Raw VBI capture or output parameters. This is
-discussed in more detail in <xref linkend="raw-vbi" />. Used by raw VBI
-capture and output devices.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-sliced-vbi-format;</entry>
- <entry><structfield>sliced</structfield></entry>
- <entry>Sliced VBI capture or output parameters. See
-<xref linkend="sliced" /> for details. Used by sliced VBI
-capture and output devices.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u8</entry>
- <entry><structfield>raw_data</structfield>[200]</entry>
- <entry>Place holder for future extensions and custom
-(driver defined) formats with <structfield>type</structfield>
-<constant>V4L2_BUF_TYPE_PRIVATE</constant> and higher.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The data format cannot be changed at this
-time, for example because I/O is already in progress.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The &v4l2-format; <structfield>type</structfield>
-field is invalid, the requested buffer type not supported, or
-<constant>VIDIOC_TRY_FMT</constant> was called and is not
-supported with this buffer type.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-input.xml b/Documentation/DocBook/v4l/vidioc-g-input.xml
deleted file mode 100644
index ed076e9..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-input.xml
+++ /dev/null
@@ -1,100 +0,0 @@
-<refentry id="vidioc-g-input">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_INPUT, VIDIOC_S_INPUT</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_INPUT</refname>
- <refname>VIDIOC_S_INPUT</refname>
- <refpurpose>Query or select the current video input</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>int *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_INPUT, VIDIOC_S_INPUT</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To query the current video input applications call the
-<constant>VIDIOC_G_INPUT</constant> ioctl with a pointer to an integer
-where the driver stores the number of the input, as in the
-&v4l2-input; <structfield>index</structfield> field. This ioctl will
-fail only when there are no video inputs, returning
-<errorcode>EINVAL</errorcode>.</para>
-
- <para>To select a video input applications store the number of the
-desired input in an integer and call the
-<constant>VIDIOC_S_INPUT</constant> ioctl with a pointer to this
-integer. Side effects are possible. For example inputs may support
-different video standards, so the driver may implicitly switch the
-current standard. It is good practice to select an input before
-querying or negotiating any other parameters.</para>
-
- <para>Information about video inputs is available using the
-&VIDIOC-ENUMINPUT; ioctl.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The number of the video input is out of bounds, or
-there are no video inputs at all and this ioctl is not
-supported.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>I/O is in progress, the input cannot be
-switched.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-jpegcomp.xml b/Documentation/DocBook/v4l/vidioc-g-jpegcomp.xml
deleted file mode 100644
index 77394b2..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-jpegcomp.xml
+++ /dev/null
@@ -1,180 +0,0 @@
-<refentry id="vidioc-g-jpegcomp">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_JPEGCOMP, VIDIOC_S_JPEGCOMP</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_JPEGCOMP</refname>
- <refname>VIDIOC_S_JPEGCOMP</refname>
- <refpurpose></refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>v4l2_jpegcompression *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>const v4l2_jpegcompression *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_JPEGCOMP, VIDIOC_S_JPEGCOMP</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>[to do]</para>
-
- <para>Ronald Bultje elaborates:</para>
-
- <!-- See video4linux-list@redhat.com on 16 Oct 2002, subject
-"Re: [V4L] Re: v4l2 api / Zoran v4l2_jpegcompression" -->
-
- <para>APP is some application-specific information. The
-application can set it itself, and it'll be stored in the JPEG-encoded
-fields (eg; interlacing information for in an AVI or so). COM is the
-same, but it's comments, like 'encoded by me' or so.</para>
-
- <para>jpeg_markers describes whether the huffman tables,
-quantization tables and the restart interval information (all
-JPEG-specific stuff) should be stored in the JPEG-encoded fields.
-These define how the JPEG field is encoded. If you omit them,
-applications assume you've used standard encoding. You usually do want
-to add them.</para>
-
- <!-- NB VIDIOC_S_JPEGCOMP is w/o. -->
-
- <table pgwide="1" frame="none" id="v4l2-jpegcompression">
- <title>struct <structname>v4l2_jpegcompression</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>int</entry>
- <entry><structfield>quality</structfield></entry>
- <entry></entry>
- </row>
- <row>
- <entry>int</entry>
- <entry><structfield>APPn</structfield></entry>
- <entry></entry>
- </row>
- <row>
- <entry>int</entry>
- <entry><structfield>APP_len</structfield></entry>
- <entry></entry>
- </row>
- <row>
- <entry>char</entry>
- <entry><structfield>APP_data</structfield>[60]</entry>
- <entry></entry>
- </row>
- <row>
- <entry>int</entry>
- <entry><structfield>COM_len</structfield></entry>
- <entry></entry>
- </row>
- <row>
- <entry>char</entry>
- <entry><structfield>COM_data</structfield>[60]</entry>
- <entry></entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>jpeg_markers</structfield></entry>
- <entry>See <xref linkend="jpeg-markers" />.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="jpeg-markers">
- <title>JPEG Markers Flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_JPEG_MARKER_DHT</constant></entry>
- <entry>(1<<3)</entry>
- <entry>Define Huffman Tables</entry>
- </row>
- <row>
- <entry><constant>V4L2_JPEG_MARKER_DQT</constant></entry>
- <entry>(1<<4)</entry>
- <entry>Define Quantization Tables</entry>
- </row>
- <row>
- <entry><constant>V4L2_JPEG_MARKER_DRI</constant></entry>
- <entry>(1<<5)</entry>
- <entry>Define Restart Interval</entry>
- </row>
- <row>
- <entry><constant>V4L2_JPEG_MARKER_COM</constant></entry>
- <entry>(1<<6)</entry>
- <entry>Comment segment</entry>
- </row>
- <row>
- <entry><constant>V4L2_JPEG_MARKER_APP</constant></entry>
- <entry>(1<<7)</entry>
- <entry>App segment, driver will always use APP0</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>This ioctl is not supported.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-output.xml b/Documentation/DocBook/v4l/vidioc-g-output.xml
deleted file mode 100644
index 3ea8c0e..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-output.xml
+++ /dev/null
@@ -1,100 +0,0 @@
-<refentry id="vidioc-g-output">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_OUTPUT, VIDIOC_S_OUTPUT</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_OUTPUT</refname>
- <refname>VIDIOC_S_OUTPUT</refname>
- <refpurpose>Query or select the current video output</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>int *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_OUTPUT, VIDIOC_S_OUTPUT</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To query the current video output applications call the
-<constant>VIDIOC_G_OUTPUT</constant> ioctl with a pointer to an integer
-where the driver stores the number of the output, as in the
-&v4l2-output; <structfield>index</structfield> field. This ioctl
-will fail only when there are no video outputs, returning the
-&EINVAL;.</para>
-
- <para>To select a video output applications store the number of the
-desired output in an integer and call the
-<constant>VIDIOC_S_OUTPUT</constant> ioctl with a pointer to this integer.
-Side effects are possible. For example outputs may support different
-video standards, so the driver may implicitly switch the current
-standard. It is good practice to select an output before querying or
-negotiating any other parameters.</para>
-
- <para>Information about video outputs is available using the
-&VIDIOC-ENUMOUTPUT; ioctl.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The number of the video output is out of bounds, or
-there are no video outputs at all and this ioctl is not
-supported.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>I/O is in progress, the output cannot be
-switched.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-parm.xml b/Documentation/DocBook/v4l/vidioc-g-parm.xml
deleted file mode 100644
index 392aa9e..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-parm.xml
+++ /dev/null
@@ -1,332 +0,0 @@
-<refentry id="vidioc-g-parm">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_PARM, VIDIOC_S_PARM</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_PARM</refname>
- <refname>VIDIOC_S_PARM</refname>
- <refpurpose>Get or set streaming parameters</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>v4l2_streamparm *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_PARM, VIDIOC_S_PARM</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>The current video standard determines a nominal number of
-frames per second. If less than this number of frames is to be
-captured or output, applications can request frame skipping or
-duplicating on the driver side. This is especially useful when using
-the <function>read()</function> or <function>write()</function>, which
-are not augmented by timestamps or sequence counters, and to avoid
-unnecessary data copying.</para>
-
- <para>Further these ioctls can be used to determine the number of
-buffers used internally by a driver in read/write mode. For
-implications see the section discussing the &func-read;
-function.</para>
-
- <para>To get and set the streaming parameters applications call
-the <constant>VIDIOC_G_PARM</constant> and
-<constant>VIDIOC_S_PARM</constant> ioctl, respectively. They take a
-pointer to a struct <structname>v4l2_streamparm</structname> which
-contains a union holding separate parameters for input and output
-devices.</para>
-
- <table pgwide="1" frame="none" id="v4l2-streamparm">
- <title>struct <structname>v4l2_streamparm</structname></title>
- <tgroup cols="4">
- &cs-ustr;
- <tbody valign="top">
- <row>
- <entry>&v4l2-buf-type;</entry>
- <entry><structfield>type</structfield></entry>
- <entry></entry>
- <entry>The buffer (stream) type, same as &v4l2-format;
-<structfield>type</structfield>, set by the application.</entry>
- </row>
- <row>
- <entry>union</entry>
- <entry><structfield>parm</structfield></entry>
- <entry></entry>
- <entry></entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-captureparm;</entry>
- <entry><structfield>capture</structfield></entry>
- <entry>Parameters for capture devices, used when
-<structfield>type</structfield> is
-<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>&v4l2-outputparm;</entry>
- <entry><structfield>output</structfield></entry>
- <entry>Parameters for output devices, used when
-<structfield>type</structfield> is
-<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>.</entry>
- </row>
- <row>
- <entry></entry>
- <entry>__u8</entry>
- <entry><structfield>raw_data</structfield>[200]</entry>
- <entry>A place holder for future extensions and custom
-(driver defined) buffer types <constant>V4L2_BUF_TYPE_PRIVATE</constant> and
-higher.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-captureparm">
- <title>struct <structname>v4l2_captureparm</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>capability</structfield></entry>
- <entry>See <xref linkend="parm-caps" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>capturemode</structfield></entry>
- <entry>Set by drivers and applications, see <xref linkend="parm-flags" />.</entry>
- </row>
- <row>
- <entry>&v4l2-fract;</entry>
- <entry><structfield>timeperframe</structfield></entry>
- <entry><para>This is is the desired period between
-successive frames captured by the driver, in seconds. The
-field is intended to skip frames on the driver side, saving I/O
-bandwidth.</para><para>Applications store here the desired frame
-period, drivers return the actual frame period, which must be greater
-or equal to the nominal frame period determined by the current video
-standard (&v4l2-standard; <structfield>frameperiod</structfield>
-field). Changing the video standard (also implicitly by switching the
-video input) may reset this parameter to the nominal frame period. To
-reset manually applications can just set this field to
-zero.</para><para>Drivers support this function only when they set the
-<constant>V4L2_CAP_TIMEPERFRAME</constant> flag in the
-<structfield>capability</structfield> field.</para></entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>extendedmode</structfield></entry>
- <entry>Custom (driver specific) streaming parameters. When
-unused, applications and drivers must set this field to zero.
-Applications using this field should check the driver name and
-version, see <xref linkend="querycap" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>readbuffers</structfield></entry>
- <entry>Applications set this field to the desired number
-of buffers used internally by the driver in &func-read; mode. Drivers
-return the actual number of buffers. When an application requests zero
-buffers, drivers should just return the current setting rather than
-the minimum or an error code. For details see <xref
- linkend="rw" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[4]</entry>
- <entry>Reserved for future extensions. Drivers and
-applications must set the array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-outputparm">
- <title>struct <structname>v4l2_outputparm</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>capability</structfield></entry>
- <entry>See <xref linkend="parm-caps" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>outputmode</structfield></entry>
- <entry>Set by drivers and applications, see <xref
- linkend="parm-flags" />.</entry>
- </row>
- <row>
- <entry>&v4l2-fract;</entry>
- <entry><structfield>timeperframe</structfield></entry>
- <entry>This is is the desired period between
-successive frames output by the driver, in seconds.</entry>
- </row>
- <row>
- <entry spanname="hspan"><para>The field is intended to
-repeat frames on the driver side in &func-write; mode (in streaming
-mode timestamps can be used to throttle the output), saving I/O
-bandwidth.</para><para>Applications store here the desired frame
-period, drivers return the actual frame period, which must be greater
-or equal to the nominal frame period determined by the current video
-standard (&v4l2-standard; <structfield>frameperiod</structfield>
-field). Changing the video standard (also implicitly by switching the
-video output) may reset this parameter to the nominal frame period. To
-reset manually applications can just set this field to
-zero.</para><para>Drivers support this function only when they set the
-<constant>V4L2_CAP_TIMEPERFRAME</constant> flag in the
-<structfield>capability</structfield> field.</para></entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>extendedmode</structfield></entry>
- <entry>Custom (driver specific) streaming parameters. When
-unused, applications and drivers must set this field to zero.
-Applications using this field should check the driver name and
-version, see <xref linkend="querycap" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>writebuffers</structfield></entry>
- <entry>Applications set this field to the desired number
-of buffers used internally by the driver in
-<function>write()</function> mode. Drivers return the actual number of
-buffers. When an application requests zero buffers, drivers should
-just return the current setting rather than the minimum or an error
-code. For details see <xref linkend="rw" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[4]</entry>
- <entry>Reserved for future extensions. Drivers and
-applications must set the array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="parm-caps">
- <title>Streaming Parameters Capabilites</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_CAP_TIMEPERFRAME</constant></entry>
- <entry>0x1000</entry>
- <entry>The frame skipping/repeating controlled by the
-<structfield>timeperframe</structfield> field is supported.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="parm-flags">
- <title>Capture Parameters Flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_MODE_HIGHQUALITY</constant></entry>
- <entry>0x0001</entry>
- <entry><para>High quality imaging mode. High quality mode
-is intended for still imaging applications. The idea is to get the
-best possible image quality that the hardware can deliver. It is not
-defined how the driver writer may achieve that; it will depend on the
-hardware and the ingenuity of the driver writer. High quality mode is
-a different mode from the the regular motion video capture modes. In
-high quality mode:<itemizedlist>
- <listitem>
- <para>The driver may be able to capture higher
-resolutions than for motion capture.</para>
- </listitem>
- <listitem>
- <para>The driver may support fewer pixel formats
-than motion capture (eg; true color).</para>
- </listitem>
- <listitem>
- <para>The driver may capture and arithmetically
-combine multiple successive fields or frames to remove color edge
-artifacts and reduce the noise in the video data.
-</para>
- </listitem>
- <listitem>
- <para>The driver may capture images in slices like
-a scanner in order to handle larger format images than would otherwise
-be possible. </para>
- </listitem>
- <listitem>
- <para>An image capture operation may be
-significantly slower than motion capture. </para>
- </listitem>
- <listitem>
- <para>Moving objects in the image might have
-excessive motion blur. </para>
- </listitem>
- <listitem>
- <para>Capture might only work through the
-<function>read()</function> call.</para>
- </listitem>
- </itemizedlist></para></entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>This ioctl is not supported.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-priority.xml b/Documentation/DocBook/v4l/vidioc-g-priority.xml
deleted file mode 100644
index 5fb0019..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-priority.xml
+++ /dev/null
@@ -1,144 +0,0 @@
-<refentry id="vidioc-g-priority">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_PRIORITY, VIDIOC_S_PRIORITY</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_PRIORITY</refname>
- <refname>VIDIOC_S_PRIORITY</refname>
- <refpurpose>Query or request the access priority associated with a
-file descriptor</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>enum v4l2_priority *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>const enum v4l2_priority *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_PRIORITY, VIDIOC_S_PRIORITY</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para>Pointer to an enum v4l2_priority type.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To query the current access priority
-applications call the <constant>VIDIOC_G_PRIORITY</constant> ioctl
-with a pointer to an enum v4l2_priority variable where the driver stores
-the current priority.</para>
-
- <para>To request an access priority applications store the
-desired priority in an enum v4l2_priority variable and call
-<constant>VIDIOC_S_PRIORITY</constant> ioctl with a pointer to this
-variable.</para>
-
- <table frame="none" pgwide="1" id="v4l2-priority">
- <title>enum v4l2_priority</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_PRIORITY_UNSET</constant></entry>
- <entry>0</entry>
- <entry></entry>
- </row>
- <row>
- <entry><constant>V4L2_PRIORITY_BACKGROUND</constant></entry>
- <entry>1</entry>
- <entry>Lowest priority, usually applications running in
-background, for example monitoring VBI transmissions. A proxy
-application running in user space will be necessary if multiple
-applications want to read from a device at this priority.</entry>
- </row>
- <row>
- <entry><constant>V4L2_PRIORITY_INTERACTIVE</constant></entry>
- <entry>2</entry>
- <entry></entry>
- </row>
- <row>
- <entry><constant>V4L2_PRIORITY_DEFAULT</constant></entry>
- <entry>2</entry>
- <entry>Medium priority, usually applications started and
-interactively controlled by the user. For example TV viewers, Teletext
-browsers, or just "panel" applications to change the channel or video
-controls. This is the default priority unless an application requests
-another.</entry>
- </row>
- <row>
- <entry><constant>V4L2_PRIORITY_RECORD</constant></entry>
- <entry>3</entry>
- <entry>Highest priority. Only one file descriptor can have
-this priority, it blocks any other fd from changing device properties.
-Usually applications which must not be interrupted, like video
-recording.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The requested priority value is invalid, or the
-driver does not support access priorities.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>Another application already requested higher
-priority.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-sliced-vbi-cap.xml b/Documentation/DocBook/v4l/vidioc-g-sliced-vbi-cap.xml
deleted file mode 100644
index 10e721b..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-sliced-vbi-cap.xml
+++ /dev/null
@@ -1,264 +0,0 @@
-<refentry id="vidioc-g-sliced-vbi-cap">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_SLICED_VBI_CAP</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_SLICED_VBI_CAP</refname>
- <refpurpose>Query sliced VBI capabilities</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_sliced_vbi_cap *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_SLICED_VBI_CAP</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To find out which data services are supported by a sliced
-VBI capture or output device, applications initialize the
-<structfield>type</structfield> field of a &v4l2-sliced-vbi-cap;,
-clear the <structfield>reserved</structfield> array and
-call the <constant>VIDIOC_G_SLICED_VBI_CAP</constant> ioctl. The
-driver fills in the remaining fields or returns an &EINVAL; if the
-sliced VBI API is unsupported or <structfield>type</structfield>
-is invalid.</para>
-
- <para>Note the <structfield>type</structfield> field was added,
-and the ioctl changed from read-only to write-read, in Linux 2.6.19.</para>
-
- <table pgwide="1" frame="none" id="v4l2-sliced-vbi-cap">
- <title>struct <structname>v4l2_sliced_vbi_cap</structname></title>
- <tgroup cols="5">
- <colspec colname="c1" colwidth="3*" />
- <colspec colname="c2" colwidth="3*" />
- <colspec colname="c3" colwidth="2*" />
- <colspec colname="c4" colwidth="2*" />
- <colspec colname="c5" colwidth="2*" />
- <spanspec spanname="hspan" namest="c3" nameend="c5" />
- <tbody valign="top">
- <row>
- <entry>__u16</entry>
- <entry><structfield>service_set</structfield></entry>
- <entry spanname="hspan">A set of all data services
-supported by the driver. Equal to the union of all elements of the
-<structfield>service_lines </structfield> array.</entry>
- </row>
- <row>
- <entry>__u16</entry>
- <entry><structfield>service_lines</structfield>[2][24]</entry>
- <entry spanname="hspan">Each element of this array
-contains a set of data services the hardware can look for or insert
-into a particular scan line. Data services are defined in <xref
- linkend="vbi-services" />. Array indices map to ITU-R
-line numbers (see also <xref
- linkend="vbi-525" /> and <xref
-linkend="vbi-625" />) as follows:</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry>Element</entry>
- <entry>525 line systems</entry>
- <entry>625 line systems</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry><structfield>service_lines</structfield>[0][1]</entry>
- <entry align="center">1</entry>
- <entry align="center">1</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry><structfield>service_lines</structfield>[0][23]</entry>
- <entry align="center">23</entry>
- <entry align="center">23</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry><structfield>service_lines</structfield>[1][1]</entry>
- <entry align="center">264</entry>
- <entry align="center">314</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry><structfield>service_lines</structfield>[1][23]</entry>
- <entry align="center">286</entry>
- <entry align="center">336</entry>
- </row>
- <row>
- <entry></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry spanname="hspan">The number of VBI lines the
-hardware can capture or output per frame, or the number of services it
-can identify on a given line may be limited. For example on PAL line
-16 the hardware may be able to look for a VPS or Teletext signal, but
-not both at the same time. Applications can learn about these limits
-using the &VIDIOC-S-FMT; ioctl as described in <xref
- linkend="sliced" />.</entry>
- </row>
- <row>
- <entry></entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry spanname="hspan">Drivers must set
-<structfield>service_lines</structfield>[0][0] and
-<structfield>service_lines</structfield>[1][0] to zero.</entry>
- </row>
- <row>
- <entry>&v4l2-buf-type;</entry>
- <entry><structfield>type</structfield></entry>
- <entry>Type of the data stream, see <xref
- linkend="v4l2-buf-type" />. Should be
-<constant>V4L2_BUF_TYPE_SLICED_VBI_CAPTURE</constant> or
-<constant>V4L2_BUF_TYPE_SLICED_VBI_OUTPUT</constant>.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[3]</entry>
- <entry spanname="hspan">This array is reserved for future
-extensions. Applications and drivers must set it to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <!-- See also dev-sliced-vbi.sgml -->
- <table pgwide="1" frame="none" id="vbi-services">
- <title>Sliced VBI services</title>
- <tgroup cols="5">
- <colspec colname="c1" colwidth="2*" />
- <colspec colname="c2" colwidth="1*" />
- <colspec colname="c3" colwidth="1*" />
- <colspec colname="c4" colwidth="2*" />
- <colspec colname="c5" colwidth="2*" />
- <spanspec spanname='rlp' namest='c3' nameend='c5' />
- <thead>
- <row>
- <entry>Symbol</entry>
- <entry>Value</entry>
- <entry>Reference</entry>
- <entry>Lines, usually</entry>
- <entry>Payload</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_SLICED_TELETEXT_B</constant> (Teletext
-System B)</entry>
- <entry>0x0001</entry>
- <entry><xref linkend="ets300706" />, <xref linkend="itu653" /></entry>
- <entry>PAL/SECAM line 7-22, 320-335 (second field 7-22)</entry>
- <entry>Last 42 of the 45 byte Teletext packet, that is
-without clock run-in and framing code, lsb first transmitted.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SLICED_VPS</constant></entry>
- <entry>0x0400</entry>
- <entry><xref linkend="ets300231" /></entry>
- <entry>PAL line 16</entry>
- <entry>Byte number 3 to 15 according to Figure 9 of
-ETS 300 231, lsb first transmitted.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SLICED_CAPTION_525</constant></entry>
- <entry>0x1000</entry>
- <entry><xref linkend="eia608" /></entry>
- <entry>NTSC line 21, 284 (second field 21)</entry>
- <entry>Two bytes in transmission order, including parity
-bit, lsb first transmitted.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SLICED_WSS_625</constant></entry>
- <entry>0x4000</entry>
- <entry><xref linkend="en300294" />, <xref linkend="itu1119" /></entry>
- <entry>PAL/SECAM line 23</entry>
- <entry><screen>
-Byte 0 1
- msb lsb msb lsb
-Bit 7 6 5 4 3 2 1 0 x x 13 12 11 10 9
-</screen></entry>
- </row>
- <row>
- <entry><constant>V4L2_SLICED_VBI_525</constant></entry>
- <entry>0x1000</entry>
- <entry spanname="rlp">Set of services applicable to 525
-line systems.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SLICED_VBI_625</constant></entry>
- <entry>0x4401</entry>
- <entry spanname="rlp">Set of services applicable to 625
-line systems.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The device does not support sliced VBI capturing or
-output, or the value in the <structfield>type</structfield> field is
-wrong.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-g-std.xml b/Documentation/DocBook/v4l/vidioc-g-std.xml
deleted file mode 100644
index 912f851..0000000
--- a/Documentation/DocBook/v4l/vidioc-g-std.xml
+++ /dev/null
@@ -1,105 +0,0 @@
-<refentry id="vidioc-g-std">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_STD, VIDIOC_S_STD</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_STD</refname>
- <refname>VIDIOC_S_STD</refname>
- <refpurpose>Query or select the video standard of the current input</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>v4l2_std_id
-*<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>const v4l2_std_id
-*<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_G_STD, VIDIOC_S_STD</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To query and select the current video standard applications
-use the <constant>VIDIOC_G_STD</constant> and <constant>VIDIOC_S_STD</constant> ioctls which take a pointer to a
-&v4l2-std-id; type as argument. <constant>VIDIOC_G_STD</constant> can
-return a single flag or a set of flags as in &v4l2-standard; field
-<structfield>id</structfield>. The flags must be unambiguous such
-that they appear in only one enumerated <structname>v4l2_standard</structname> structure.</para>
-
- <para><constant>VIDIOC_S_STD</constant> accepts one or more
-flags, being a write-only ioctl it does not return the actual new standard as
-<constant>VIDIOC_G_STD</constant> does. When no flags are given or
-the current input does not support the requested standard the driver
-returns an &EINVAL;. When the standard set is ambiguous drivers may
-return <errorcode>EINVAL</errorcode> or choose any of the requested
-standards.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>This ioctl is not supported, or the
-<constant>VIDIOC_S_STD</constant> parameter was unsuitable.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The device is busy and therefore can not change the standard</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-log-status.xml b/Documentation/DocBook/v4l/vidioc-log-status.xml
deleted file mode 100644
index 2634b7c..0000000
--- a/Documentation/DocBook/v4l/vidioc-log-status.xml
+++ /dev/null
@@ -1,58 +0,0 @@
-<refentry id="vidioc-log-status">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_LOG_STATUS</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_LOG_STATUS</refname>
- <refpurpose>Log driver status information</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para>As the video/audio devices become more complicated it
-becomes harder to debug problems. When this ioctl is called the driver
-will output the current device status to the kernel log. This is
-particular useful when dealing with problems like no sound, no video
-and incorrectly tuned channels. Also many modern devices autodetect
-video and audio standards and this ioctl will report what the device
-thinks what the standard is. Mismatches may give an indication where
-the problem is.</para>
-
- <para>This ioctl is optional and not all drivers support it. It
-was introduced in Linux 2.6.15.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The driver does not support this ioctl.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-overlay.xml b/Documentation/DocBook/v4l/vidioc-overlay.xml
deleted file mode 100644
index 1036c58..0000000
--- a/Documentation/DocBook/v4l/vidioc-overlay.xml
+++ /dev/null
@@ -1,83 +0,0 @@
-<refentry id="vidioc-overlay">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_OVERLAY</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_OVERLAY</refname>
- <refpurpose>Start or stop video overlay</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>const int *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_OVERLAY</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>This ioctl is part of the <link linkend="overlay">video
- overlay</link> I/O method. Applications call
- <constant>VIDIOC_OVERLAY</constant> to start or stop the
- overlay. It takes a pointer to an integer which must be set to
- zero by the application to stop overlay, to one to start.</para>
-
- <para>Drivers do not support &VIDIOC-STREAMON; or
-&VIDIOC-STREAMOFF; with <constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>Video overlay is not supported, or the
-parameters have not been set up. See <xref
-linkend="overlay" /> for the necessary steps.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-qbuf.xml b/Documentation/DocBook/v4l/vidioc-qbuf.xml
deleted file mode 100644
index f2b11f8..0000000
--- a/Documentation/DocBook/v4l/vidioc-qbuf.xml
+++ /dev/null
@@ -1,194 +0,0 @@
-<refentry id="vidioc-qbuf">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_QBUF, VIDIOC_DQBUF</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_QBUF</refname>
- <refname>VIDIOC_DQBUF</refname>
- <refpurpose>Exchange a buffer with the driver</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_buffer *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_QBUF, VIDIOC_DQBUF</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>Applications call the <constant>VIDIOC_QBUF</constant> ioctl
-to enqueue an empty (capturing) or filled (output) buffer in the
-driver's incoming queue. The semantics depend on the selected I/O
-method.</para>
-
- <para>To enqueue a buffer applications set the <structfield>type</structfield>
-field of a &v4l2-buffer; to the same buffer type as was previously used
-with &v4l2-format; <structfield>type</structfield> and &v4l2-requestbuffers;
-<structfield>type</structfield>. Applications must also set the
-<structfield>index</structfield> field. Valid index numbers range from
-zero to the number of buffers allocated with &VIDIOC-REQBUFS;
-(&v4l2-requestbuffers; <structfield>count</structfield>) minus one. The
-contents of the struct <structname>v4l2_buffer</structname> returned
-by a &VIDIOC-QUERYBUF; ioctl will do as well. When the buffer is
-intended for output (<structfield>type</structfield> is
-<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>,
-<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant>, or
-<constant>V4L2_BUF_TYPE_VBI_OUTPUT</constant>) applications must also
-initialize the <structfield>bytesused</structfield>,
-<structfield>field</structfield> and
-<structfield>timestamp</structfield> fields, see <xref
-linkend="buffer" /> for details.
-Applications must also set <structfield>flags</structfield> to 0. If a driver
-supports capturing from specific video inputs and you want to specify a video
-input, then <structfield>flags</structfield> should be set to
-<constant>V4L2_BUF_FLAG_INPUT</constant> and the field
-<structfield>input</structfield> must be initialized to the desired input.
-The <structfield>reserved</structfield> field must be set to 0. When using
-the <link linkend="planar-apis">multi-planar API</link>, the
-<structfield>m.planes</structfield> field must contain a userspace pointer
-to a filled-in array of &v4l2-plane; and the <structfield>length</structfield>
-field must be set to the number of elements in that array.
-</para>
-
- <para>To enqueue a <link linkend="mmap">memory mapped</link>
-buffer applications set the <structfield>memory</structfield>
-field to <constant>V4L2_MEMORY_MMAP</constant>. When
-<constant>VIDIOC_QBUF</constant> is called with a pointer to this
-structure the driver sets the
-<constant>V4L2_BUF_FLAG_MAPPED</constant> and
-<constant>V4L2_BUF_FLAG_QUEUED</constant> flags and clears the
-<constant>V4L2_BUF_FLAG_DONE</constant> flag in the
-<structfield>flags</structfield> field, or it returns an
-&EINVAL;.</para>
-
- <para>To enqueue a <link linkend="userp">user pointer</link>
-buffer applications set the <structfield>memory</structfield>
-field to <constant>V4L2_MEMORY_USERPTR</constant>, the
-<structfield>m.userptr</structfield> field to the address of the
-buffer and <structfield>length</structfield> to its size. When the multi-planar
-API is used, <structfield>m.userptr</structfield> and
-<structfield>length</structfield> members of the passed array of &v4l2-plane;
-have to be used instead. When <constant>VIDIOC_QBUF</constant> is called with
-a pointer to this structure the driver sets the
-<constant>V4L2_BUF_FLAG_QUEUED</constant> flag and clears the
-<constant>V4L2_BUF_FLAG_MAPPED</constant> and
-<constant>V4L2_BUF_FLAG_DONE</constant> flags in the
-<structfield>flags</structfield> field, or it returns an error code.
-This ioctl locks the memory pages of the buffer in physical memory,
-they cannot be swapped out to disk. Buffers remain locked until
-dequeued, until the &VIDIOC-STREAMOFF; or &VIDIOC-REQBUFS; ioctl is
-called, or until the device is closed.</para>
-
- <para>Applications call the <constant>VIDIOC_DQBUF</constant>
-ioctl to dequeue a filled (capturing) or displayed (output) buffer
-from the driver's outgoing queue. They just set the
-<structfield>type</structfield>, <structfield>memory</structfield>
-and <structfield>reserved</structfield>
-fields of a &v4l2-buffer; as above, when <constant>VIDIOC_DQBUF</constant>
-is called with a pointer to this structure the driver fills the
-remaining fields or returns an error code. The driver may also set
-<constant>V4L2_BUF_FLAG_ERROR</constant> in the <structfield>flags</structfield>
-field. It indicates a non-critical (recoverable) streaming error. In such case
-the application may continue as normal, but should be aware that data in the
-dequeued buffer might be corrupted. When using the multi-planar API, the
-planes array does not have to be passed; the <structfield>m.planes</structfield>
-member must be set to NULL in that case.</para>
-
- <para>By default <constant>VIDIOC_DQBUF</constant> blocks when no
-buffer is in the outgoing queue. When the
-<constant>O_NONBLOCK</constant> flag was given to the &func-open;
-function, <constant>VIDIOC_DQBUF</constant> returns immediately
-with an &EAGAIN; when no buffer is available.</para>
-
- <para>The <structname>v4l2_buffer</structname> structure is
-specified in <xref linkend="buffer" />.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EAGAIN</errorcode></term>
- <listitem>
- <para>Non-blocking I/O has been selected using
-<constant>O_NONBLOCK</constant> and no buffer was in the outgoing
-queue.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The buffer <structfield>type</structfield> is not
-supported, or the <structfield>index</structfield> is out of bounds,
-or no buffers have been allocated yet, or the
-<structfield>userptr</structfield> or
-<structfield>length</structfield> are invalid.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>ENOMEM</errorcode></term>
- <listitem>
- <para>Not enough physical or virtual memory was available to
-enqueue a user pointer buffer.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EIO</errorcode></term>
- <listitem>
- <para><constant>VIDIOC_DQBUF</constant> failed due to an
-internal error. Can also indicate temporary problems like signal
-loss. Note the driver might dequeue an (empty) buffer despite
-returning an error, or even stop capturing. Reusing such buffer may be unsafe
-though and its details (e.g. <structfield>index</structfield>) may not be
-returned either. It is recommended that drivers indicate recoverable errors
-by setting the <constant>V4L2_BUF_FLAG_ERROR</constant> and returning 0 instead.
-In that case the application should be able to safely reuse the buffer and
-continue streaming.
- </para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-query-dv-preset.xml b/Documentation/DocBook/v4l/vidioc-query-dv-preset.xml
deleted file mode 100644
index d272f7a..0000000
--- a/Documentation/DocBook/v4l/vidioc-query-dv-preset.xml
+++ /dev/null
@@ -1,87 +0,0 @@
-<refentry id="vidioc-query-dv-preset">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_QUERY_DV_PRESET</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_QUERY_DV_PRESET</refname>
- <refpurpose>Sense the DV preset received by the current
-input</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_dv_preset *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_QUERY_DV_PRESET</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>The hardware may be able to detect the current DV preset
-automatically, similar to sensing the video standard. To do so, applications
-call <constant> VIDIOC_QUERY_DV_PRESET</constant> with a pointer to a
-&v4l2-dv-preset; type. Once the hardware detects a preset, that preset is
-returned in the preset field of &v4l2-dv-preset;. If the preset could not be
-detected because there was no signal, or the signal was unreliable, or the
-signal did not map to a supported preset, then the value V4L2_DV_INVALID is
-returned.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>This ioctl is not supported.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The device is busy and therefore can not sense the preset</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-querycap.xml b/Documentation/DocBook/v4l/vidioc-querycap.xml
deleted file mode 100644
index f29f1b8..0000000
--- a/Documentation/DocBook/v4l/vidioc-querycap.xml
+++ /dev/null
@@ -1,303 +0,0 @@
-<refentry id="vidioc-querycap">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_QUERYCAP</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_QUERYCAP</refname>
- <refpurpose>Query device capabilities</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_capability *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_QUERYCAP</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>All V4L2 devices support the
-<constant>VIDIOC_QUERYCAP</constant> ioctl. It is used to identify
-kernel devices compatible with this specification and to obtain
-information about driver and hardware capabilities. The ioctl takes a
-pointer to a &v4l2-capability; which is filled by the driver. When the
-driver is not compatible with this specification the ioctl returns an
-&EINVAL;.</para>
-
- <table pgwide="1" frame="none" id="v4l2-capability">
- <title>struct <structname>v4l2_capability</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u8</entry>
- <entry><structfield>driver</structfield>[16]</entry>
- <entry><para>Name of the driver, a unique NUL-terminated
-ASCII string. For example: "bttv". Driver specific applications can
-use this information to verify the driver identity. It is also useful
-to work around known bugs, or to identify drivers in error reports.
-The driver version is stored in the <structfield>version</structfield>
-field.</para><para>Storing strings in fixed sized arrays is bad
-practice but unavoidable here. Drivers and applications should take
-precautions to never read or write beyond the end of the array and to
-make sure the strings are properly NUL-terminated.</para></entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>card</structfield>[32]</entry>
- <entry>Name of the device, a NUL-terminated ASCII string.
-For example: "Yoyodyne TV/FM". One driver may support different brands
-or models of video hardware. This information is intended for users,
-for example in a menu of available devices. Since multiple TV cards of
-the same brand may be installed which are supported by the same
-driver, this name should be combined with the character device file
-name (⪚ <filename>/dev/video2</filename>) or the
-<structfield>bus_info</structfield> string to avoid
-ambiguities.</entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>bus_info</structfield>[32]</entry>
- <entry>Location of the device in the system, a
-NUL-terminated ASCII string. For example: "PCI Slot 4". This
-information is intended for users, to distinguish multiple
-identical devices. If no such information is available the field may
-simply count the devices controlled by the driver, or contain the
-empty string (<structfield>bus_info</structfield>[0] = 0).<!-- XXX pci_dev->slot_name example --></entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>version</structfield></entry>
- <entry><para>Version number of the driver. Together with
-the <structfield>driver</structfield> field this identifies a
-particular driver. The version number is formatted using the
-<constant>KERNEL_VERSION()</constant> macro:</para></entry>
- </row>
- <row>
- <entry spanname="hspan"><para>
-<programlisting>
-#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
-
-__u32 version = KERNEL_VERSION(0, 8, 1);
-
-printf ("Version: %u.%u.%u\n",
- (version >> 16) & 0xFF,
- (version >> 8) & 0xFF,
- version & 0xFF);
-</programlisting></para></entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>capabilities</structfield></entry>
- <entry>Device capabilities, see <xref
- linkend="device-capabilities" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[4]</entry>
- <entry>Reserved for future extensions. Drivers must set
-this array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="device-capabilities">
- <title>Device Capabilities Flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_CAP_VIDEO_CAPTURE</constant></entry>
- <entry>0x00000001</entry>
- <entry>The device supports the single-planar API through the <link
-linkend="capture">Video Capture</link> interface.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_VIDEO_CAPTURE_MPLANE</constant></entry>
- <entry>0x00001000</entry>
- <entry>The device supports the
- <link linkend="planar-apis">multi-planar API</link> through the
- <link linkend="capture">Video Capture</link> interface.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_VIDEO_OUTPUT</constant></entry>
- <entry>0x00000002</entry>
- <entry>The device supports the single-planar API through the <link
-linkend="output">Video Output</link> interface.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_VIDEO_OUTPUT_MPLANE</constant></entry>
- <entry>0x00002000</entry>
- <entry>The device supports the
- <link linkend="planar-apis">multi-planar API</link> through the
- <link linkend="output">Video Output</link> interface.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_VIDEO_OVERLAY</constant></entry>
- <entry>0x00000004</entry>
- <entry>The device supports the <link
-linkend="overlay">Video Overlay</link> interface. A video overlay device
-typically stores captured images directly in the video memory of a
-graphics card, with hardware clipping and scaling.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_VBI_CAPTURE</constant></entry>
- <entry>0x00000010</entry>
- <entry>The device supports the <link linkend="raw-vbi">Raw
-VBI Capture</link> interface, providing Teletext and Closed Caption
-data.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_VBI_OUTPUT</constant></entry>
- <entry>0x00000020</entry>
- <entry>The device supports the <link linkend="raw-vbi">Raw VBI Output</link> interface.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_SLICED_VBI_CAPTURE</constant></entry>
- <entry>0x00000040</entry>
- <entry>The device supports the <link linkend="sliced">Sliced VBI Capture</link> interface.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_SLICED_VBI_OUTPUT</constant></entry>
- <entry>0x00000080</entry>
- <entry>The device supports the <link linkend="sliced">Sliced VBI Output</link> interface.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_RDS_CAPTURE</constant></entry>
- <entry>0x00000100</entry>
- <entry>The device supports the <link linkend="rds">RDS</link> capture interface.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_VIDEO_OUTPUT_OVERLAY</constant></entry>
- <entry>0x00000200</entry>
- <entry>The device supports the <link linkend="osd">Video
-Output Overlay</link> (OSD) interface. Unlike the <wordasword>Video
-Overlay</wordasword> interface, this is a secondary function of video
-output devices and overlays an image onto an outgoing video signal.
-When the driver sets this flag, it must clear the
-<constant>V4L2_CAP_VIDEO_OVERLAY</constant> flag and vice
-versa.<footnote><para>The &v4l2-framebuffer; lacks an
-&v4l2-buf-type; field, therefore the type of overlay is implied by the
-driver capabilities.</para></footnote></entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_HW_FREQ_SEEK</constant></entry>
- <entry>0x00000400</entry>
- <entry>The device supports the &VIDIOC-S-HW-FREQ-SEEK; ioctl for
-hardware frequency seeking.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_RDS_OUTPUT</constant></entry>
- <entry>0x00000800</entry>
- <entry>The device supports the <link linkend="rds">RDS</link> output interface.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_TUNER</constant></entry>
- <entry>0x00010000</entry>
- <entry>The device has some sort of tuner to
-receive RF-modulated video signals. For more information about
-tuner programming see
-<xref linkend="tuner" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_AUDIO</constant></entry>
- <entry>0x00020000</entry>
- <entry>The device has audio inputs or outputs. It may or
-may not support audio recording or playback, in PCM or compressed
-formats. PCM audio support must be implemented as ALSA or OSS
-interface. For more information on audio inputs and outputs see <xref
- linkend="audio" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_RADIO</constant></entry>
- <entry>0x00040000</entry>
- <entry>This is a radio receiver.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_MODULATOR</constant></entry>
- <entry>0x00080000</entry>
- <entry>The device has some sort of modulator to
-emit RF-modulated video/audio signals. For more information about
-modulator programming see
-<xref linkend="tuner" />.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_READWRITE</constant></entry>
- <entry>0x01000000</entry>
- <entry>The device supports the <link
-linkend="rw">read()</link> and/or <link linkend="rw">write()</link>
-I/O methods.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_ASYNCIO</constant></entry>
- <entry>0x02000000</entry>
- <entry>The device supports the <link
-linkend="async">asynchronous</link> I/O methods.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CAP_STREAMING</constant></entry>
- <entry>0x04000000</entry>
- <entry>The device supports the <link
-linkend="mmap">streaming</link> I/O method.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The device is not compatible with this
-specification.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
-
diff --git a/Documentation/DocBook/v4l/vidioc-queryctrl.xml b/Documentation/DocBook/v4l/vidioc-queryctrl.xml
deleted file mode 100644
index 0d5e828..0000000
--- a/Documentation/DocBook/v4l/vidioc-queryctrl.xml
+++ /dev/null
@@ -1,434 +0,0 @@
-<refentry id="vidioc-queryctrl">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_QUERYCTRL, VIDIOC_QUERYMENU</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_QUERYCTRL</refname>
- <refname>VIDIOC_QUERYMENU</refname>
- <refpurpose>Enumerate controls and menu control items</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_queryctrl *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_querymenu *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_QUERYCTRL, VIDIOC_QUERYMENU</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>To query the attributes of a control applications set the
-<structfield>id</structfield> field of a &v4l2-queryctrl; and call the
-<constant>VIDIOC_QUERYCTRL</constant> ioctl with a pointer to this
-structure. The driver fills the rest of the structure or returns an
-&EINVAL; when the <structfield>id</structfield> is invalid.</para>
-
- <para>It is possible to enumerate controls by calling
-<constant>VIDIOC_QUERYCTRL</constant> with successive
-<structfield>id</structfield> values starting from
-<constant>V4L2_CID_BASE</constant> up to and exclusive
-<constant>V4L2_CID_BASE_LASTP1</constant>. Drivers may return
-<errorcode>EINVAL</errorcode> if a control in this range is not
-supported. Further applications can enumerate private controls, which
-are not defined in this specification, by starting at
-<constant>V4L2_CID_PRIVATE_BASE</constant> and incrementing
-<structfield>id</structfield> until the driver returns
-<errorcode>EINVAL</errorcode>.</para>
-
- <para>In both cases, when the driver sets the
-<constant>V4L2_CTRL_FLAG_DISABLED</constant> flag in the
-<structfield>flags</structfield> field this control is permanently
-disabled and should be ignored by the application.<footnote>
- <para><constant>V4L2_CTRL_FLAG_DISABLED</constant> was
-intended for two purposes: Drivers can skip predefined controls not
-supported by the hardware (although returning EINVAL would do as
-well), or disable predefined and private controls after hardware
-detection without the trouble of reordering control arrays and indices
-(EINVAL cannot be used to skip private controls because it would
-prematurely end the enumeration).</para></footnote></para>
-
- <para>When the application ORs <structfield>id</structfield> with
-<constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant> the driver returns the
-next supported control, or <errorcode>EINVAL</errorcode> if there is
-none. Drivers which do not support this flag yet always return
-<errorcode>EINVAL</errorcode>.</para>
-
- <para>Additional information is required for menu controls: the
-names of the menu items. To query them applications set the
-<structfield>id</structfield> and <structfield>index</structfield>
-fields of &v4l2-querymenu; and call the
-<constant>VIDIOC_QUERYMENU</constant> ioctl with a pointer to this
-structure. The driver fills the rest of the structure or returns an
-&EINVAL; when the <structfield>id</structfield> or
-<structfield>index</structfield> is invalid. Menu items are enumerated
-by calling <constant>VIDIOC_QUERYMENU</constant> with successive
-<structfield>index</structfield> values from &v4l2-queryctrl;
-<structfield>minimum</structfield> to
-<structfield>maximum</structfield>, inclusive. Note that it is possible
-for <constant>VIDIOC_QUERYMENU</constant> to return an &EINVAL; for some
-indices between <structfield>minimum</structfield> and <structfield>maximum</structfield>.
-In that case that particular menu item is not supported by this driver. Also note that
-the <structfield>minimum</structfield> value is not necessarily 0.</para>
-
- <para>See also the examples in <xref linkend="control" />.</para>
-
- <table pgwide="1" frame="none" id="v4l2-queryctrl">
- <title>struct <structname>v4l2_queryctrl</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>id</structfield></entry>
- <entry>Identifies the control, set by the application. See
-<xref linkend="control-id" /> for predefined IDs. When the ID is ORed
-with V4L2_CTRL_FLAG_NEXT_CTRL the driver clears the flag and returns
-the first control with a higher ID. Drivers which do not support this
-flag yet always return an &EINVAL;.</entry>
- </row>
- <row>
- <entry>&v4l2-ctrl-type;</entry>
- <entry><structfield>type</structfield></entry>
- <entry>Type of control, see <xref
- linkend="v4l2-ctrl-type" />.</entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>name</structfield>[32]</entry>
- <entry>Name of the control, a NUL-terminated ASCII
-string. This information is intended for the user.</entry>
- </row>
- <row>
- <entry>__s32</entry>
- <entry><structfield>minimum</structfield></entry>
- <entry>Minimum value, inclusive. This field gives a lower
-bound for <constant>V4L2_CTRL_TYPE_INTEGER</constant> controls and the
-lowest valid index for <constant>V4L2_CTRL_TYPE_MENU</constant> controls.
-For <constant>V4L2_CTRL_TYPE_STRING</constant> controls the minimum value
-gives the minimum length of the string. This length <emphasis>does not include the terminating
-zero</emphasis>. It may not be valid for any other type of control, including
-<constant>V4L2_CTRL_TYPE_INTEGER64</constant> controls. Note that this is a
-signed value.</entry>
- </row>
- <row>
- <entry>__s32</entry>
- <entry><structfield>maximum</structfield></entry>
- <entry>Maximum value, inclusive. This field gives an upper
-bound for <constant>V4L2_CTRL_TYPE_INTEGER</constant> controls and the
-highest valid index for <constant>V4L2_CTRL_TYPE_MENU</constant>
-controls.
-For <constant>V4L2_CTRL_TYPE_STRING</constant> controls the maximum value
-gives the maximum length of the string. This length <emphasis>does not include the terminating
-zero</emphasis>. It may not be valid for any other type of control, including
-<constant>V4L2_CTRL_TYPE_INTEGER64</constant> controls. Note that this is a
-signed value.</entry>
- </row>
- <row>
- <entry>__s32</entry>
- <entry><structfield>step</structfield></entry>
- <entry><para>This field gives a step size for
-<constant>V4L2_CTRL_TYPE_INTEGER</constant> controls. For
-<constant>V4L2_CTRL_TYPE_STRING</constant> controls this field refers to
-the string length that has to be a multiple of this step size.
-It may not be valid for any other type of control, including
-<constant>V4L2_CTRL_TYPE_INTEGER64</constant>
-controls.</para><para>Generally drivers should not scale hardware
-control values. It may be necessary for example when the
-<structfield>name</structfield> or <structfield>id</structfield> imply
-a particular unit and the hardware actually accepts only multiples of
-said unit. If so, drivers must take care values are properly rounded
-when scaling, such that errors will not accumulate on repeated
-read-write cycles.</para><para>This field gives the smallest change of
-an integer control actually affecting hardware. Often the information
-is needed when the user can change controls by keyboard or GUI
-buttons, rather than a slider. When for example a hardware register
-accepts values 0-511 and the driver reports 0-65535, step should be
-128.</para><para>Note that although signed, the step value is supposed to
-be always positive.</para></entry>
- </row>
- <row>
- <entry>__s32</entry>
- <entry><structfield>default_value</structfield></entry>
- <entry>The default value of a
-<constant>V4L2_CTRL_TYPE_INTEGER</constant>,
-<constant>_BOOLEAN</constant> or <constant>_MENU</constant> control.
-Not valid for other types of controls. Drivers reset controls only
-when the driver is loaded, not later, in particular not when the
-func-open; is called.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>flags</structfield></entry>
- <entry>Control flags, see <xref
- linkend="control-flags" />.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[2]</entry>
- <entry>Reserved for future extensions. Drivers must set
-the array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-querymenu">
- <title>struct <structname>v4l2_querymenu</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>id</structfield></entry>
- <entry>Identifies the control, set by the application
-from the respective &v4l2-queryctrl;
-<structfield>id</structfield>.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>index</structfield></entry>
- <entry>Index of the menu item, starting at zero, set by
- the application.</entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>name</structfield>[32]</entry>
- <entry>Name of the menu item, a NUL-terminated ASCII
-string. This information is intended for the user.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield></entry>
- <entry>Reserved for future extensions. Drivers must set
-the array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-ctrl-type">
- <title>enum v4l2_ctrl_type</title>
- <tgroup cols="5" align="left">
- <colspec colwidth="30*" />
- <colspec colwidth="5*" align="center" />
- <colspec colwidth="5*" align="center" />
- <colspec colwidth="5*" align="center" />
- <colspec colwidth="55*" />
- <thead>
- <row>
- <entry>Type</entry>
- <entry><structfield>minimum</structfield></entry>
- <entry><structfield>step</structfield></entry>
- <entry><structfield>maximum</structfield></entry>
- <entry>Description</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_CTRL_TYPE_INTEGER</constant></entry>
- <entry>any</entry>
- <entry>any</entry>
- <entry>any</entry>
- <entry>An integer-valued control ranging from minimum to
-maximum inclusive. The step value indicates the increment between
-values which are actually different on the hardware.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_TYPE_BOOLEAN</constant></entry>
- <entry>0</entry>
- <entry>1</entry>
- <entry>1</entry>
- <entry>A boolean-valued control. Zero corresponds to
-"disabled", and one means "enabled".</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_TYPE_MENU</constant></entry>
- <entry>≥ 0</entry>
- <entry>1</entry>
- <entry>N-1</entry>
- <entry>The control has a menu of N choices. The names of
-the menu items can be enumerated with the
-<constant>VIDIOC_QUERYMENU</constant> ioctl.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_TYPE_BUTTON</constant></entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>0</entry>
- <entry>A control which performs an action when set.
-Drivers must ignore the value passed with
-<constant>VIDIOC_S_CTRL</constant> and return an &EINVAL; on a
-<constant>VIDIOC_G_CTRL</constant> attempt.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_TYPE_INTEGER64</constant></entry>
- <entry>n/a</entry>
- <entry>n/a</entry>
- <entry>n/a</entry>
- <entry>A 64-bit integer valued control. Minimum, maximum
-and step size cannot be queried.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_TYPE_STRING</constant></entry>
- <entry>≥ 0</entry>
- <entry>≥ 1</entry>
- <entry>≥ 0</entry>
- <entry>The minimum and maximum string lengths. The step size
-means that the string must be (minimum + N * step) characters long for
-N ≥ 0. These lengths do not include the terminating zero, so in order to
-pass a string of length 8 to &VIDIOC-S-EXT-CTRLS; you need to set the
-<structfield>size</structfield> field of &v4l2-ext-control; to 9. For &VIDIOC-G-EXT-CTRLS; you can
-set the <structfield>size</structfield> field to <structfield>maximum</structfield> + 1.
-Which character encoding is used will depend on the string control itself and
-should be part of the control documentation.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_TYPE_CTRL_CLASS</constant></entry>
- <entry>n/a</entry>
- <entry>n/a</entry>
- <entry>n/a</entry>
- <entry>This is not a control. When
-<constant>VIDIOC_QUERYCTRL</constant> is called with a control ID
-equal to a control class code (see <xref linkend="ctrl-class" />) + 1, the
-ioctl returns the name of the control class and this control type.
-Older drivers which do not support this feature return an
-&EINVAL;.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="control-flags">
- <title>Control Flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_CTRL_FLAG_DISABLED</constant></entry>
- <entry>0x0001</entry>
- <entry>This control is permanently disabled and should be
-ignored by the application. Any attempt to change the control will
-result in an &EINVAL;.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_FLAG_GRABBED</constant></entry>
- <entry>0x0002</entry>
- <entry>This control is temporarily unchangeable, for
-example because another application took over control of the
-respective resource. Such controls may be displayed specially in a
-user interface. Attempts to change the control may result in an
-&EBUSY;.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_FLAG_READ_ONLY</constant></entry>
- <entry>0x0004</entry>
- <entry>This control is permanently readable only. Any
-attempt to change the control will result in an &EINVAL;.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_FLAG_UPDATE</constant></entry>
- <entry>0x0008</entry>
- <entry>A hint that changing this control may affect the
-value of other controls within the same control class. Applications
-should update their user interface accordingly.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_FLAG_INACTIVE</constant></entry>
- <entry>0x0010</entry>
- <entry>This control is not applicable to the current
-configuration and should be displayed accordingly in a user interface.
-For example the flag may be set on a MPEG audio level 2 bitrate
-control when MPEG audio encoding level 1 was selected with another
-control.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_FLAG_SLIDER</constant></entry>
- <entry>0x0020</entry>
- <entry>A hint that this control is best represented as a
-slider-like element in a user interface.</entry>
- </row>
- <row>
- <entry><constant>V4L2_CTRL_FLAG_WRITE_ONLY</constant></entry>
- <entry>0x0040</entry>
- <entry>This control is permanently writable only. Any
-attempt to read the control will result in an &EACCES; error code. This
-flag is typically present for relative controls or action controls where
-writing a value will cause the device to carry out a given action
-(⪚ motor control) but no meaningful value can be returned.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The &v4l2-queryctrl; <structfield>id</structfield>
-is invalid. The &v4l2-querymenu; <structfield>id</structfield> is
-invalid or <structfield>index</structfield> is out of range (less than
-<structfield>minimum</structfield> or greater than <structfield>maximum</structfield>)
-or this particular menu item is not supported by the driver.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EACCES</errorcode></term>
- <listitem>
- <para>An attempt was made to read a write-only control.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-querystd.xml b/Documentation/DocBook/v4l/vidioc-querystd.xml
deleted file mode 100644
index 1a9e603..0000000
--- a/Documentation/DocBook/v4l/vidioc-querystd.xml
+++ /dev/null
@@ -1,89 +0,0 @@
-<refentry id="vidioc-querystd">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_QUERYSTD</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_QUERYSTD</refname>
- <refpurpose>Sense the video standard received by the current
-input</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>v4l2_std_id *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_QUERYSTD</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>The hardware may be able to detect the current video
-standard automatically. To do so, applications call <constant>
-VIDIOC_QUERYSTD</constant> with a pointer to a &v4l2-std-id; type. The
-driver stores here a set of candidates, this can be a single flag or a
-set of supported standards if for example the hardware can only
-distinguish between 50 and 60 Hz systems. When detection is not
-possible or fails, the set must contain all standards supported by the
-current video input or output.</para>
-
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>This ioctl is not supported.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The device is busy and therefore can not detect the standard</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-reqbufs.xml b/Documentation/DocBook/v4l/vidioc-reqbufs.xml
deleted file mode 100644
index 69800ae..0000000
--- a/Documentation/DocBook/v4l/vidioc-reqbufs.xml
+++ /dev/null
@@ -1,150 +0,0 @@
-<refentry id="vidioc-reqbufs">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_REQBUFS</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_REQBUFS</refname>
- <refpurpose>Initiate Memory Mapping or User Pointer I/O</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_requestbuffers *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_REQBUFS</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>This ioctl is used to initiate <link linkend="mmap">memory
-mapped</link> or <link linkend="userp">user pointer</link>
-I/O. Memory mapped buffers are located in device memory and must be
-allocated with this ioctl before they can be mapped into the
-application's address space. User buffers are allocated by
-applications themselves, and this ioctl is merely used to switch the
-driver into user pointer I/O mode and to setup some internal structures.</para>
-
- <para>To allocate device buffers applications initialize all
-fields of the <structname>v4l2_requestbuffers</structname> structure.
-They set the <structfield>type</structfield> field to the respective
-stream or buffer type, the <structfield>count</structfield> field to
-the desired number of buffers, <structfield>memory</structfield>
-must be set to the requested I/O method and the <structfield>reserved</structfield> array
-must be zeroed. When the ioctl
-is called with a pointer to this structure the driver will attempt to allocate
-the requested number of buffers and it stores the actual number
-allocated in the <structfield>count</structfield> field. It can be
-smaller than the number requested, even zero, when the driver runs out
-of free memory. A larger number is also possible when the driver requires
-more buffers to function correctly. For example video output requires at least two buffers,
-one displayed and one filled by the application.</para>
- <para>When the I/O method is not supported the ioctl
-returns an &EINVAL;.</para>
-
- <para>Applications can call <constant>VIDIOC_REQBUFS</constant>
-again to change the number of buffers, however this cannot succeed
-when any buffers are still mapped. A <structfield>count</structfield>
-value of zero frees all buffers, after aborting or finishing any DMA
-in progress, an implicit &VIDIOC-STREAMOFF;. <!-- mhs: I see no
-reason why munmap()ping one or even all buffers must imply
-streamoff.--></para>
-
- <table pgwide="1" frame="none" id="v4l2-requestbuffers">
- <title>struct <structname>v4l2_requestbuffers</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>count</structfield></entry>
- <entry>The number of buffers requested or granted.</entry>
- </row>
- <row>
- <entry>&v4l2-buf-type;</entry>
- <entry><structfield>type</structfield></entry>
- <entry>Type of the stream or buffers, this is the same
-as the &v4l2-format; <structfield>type</structfield> field. See <xref
- linkend="v4l2-buf-type" /> for valid values.</entry>
- </row>
- <row>
- <entry>&v4l2-memory;</entry>
- <entry><structfield>memory</structfield></entry>
- <entry>Applications set this field to
-<constant>V4L2_MEMORY_MMAP</constant> or
-<constant>V4L2_MEMORY_USERPTR</constant>.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[2]</entry>
- <entry>A place holder for future extensions and custom
-(driver defined) buffer types <constant>V4L2_BUF_TYPE_PRIVATE</constant> and
-higher. This array should be zeroed by applications.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The driver supports multiple opens and I/O is already
-in progress, or reallocation of buffers was attempted although one or
-more are still mapped.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The buffer type (<structfield>type</structfield> field) or the
-requested I/O method (<structfield>memory</structfield>) is not
-supported.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-streamon.xml b/Documentation/DocBook/v4l/vidioc-streamon.xml
deleted file mode 100644
index 75ed39b..0000000
--- a/Documentation/DocBook/v4l/vidioc-streamon.xml
+++ /dev/null
@@ -1,115 +0,0 @@
-<refentry id="vidioc-streamon">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_STREAMON, VIDIOC_STREAMOFF</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_STREAMON</refname>
- <refname>VIDIOC_STREAMOFF</refname>
- <refpurpose>Start or stop streaming I/O</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>const int *<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_STREAMON, VIDIOC_STREAMOFF</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>The <constant>VIDIOC_STREAMON</constant> and
-<constant>VIDIOC_STREAMOFF</constant> ioctl start and stop the capture
-or output process during streaming (<link linkend="mmap">memory
-mapping</link> or <link linkend="userp">user pointer</link>) I/O.</para>
-
- <para>Specifically the capture hardware is disabled and no input
-buffers are filled (if there are any empty buffers in the incoming
-queue) until <constant>VIDIOC_STREAMON</constant> has been called.
-Accordingly the output hardware is disabled, no video signal is
-produced until <constant>VIDIOC_STREAMON</constant> has been called.
-The ioctl will succeed only when at least one output buffer is in the
-incoming queue.</para>
-
- <para>The <constant>VIDIOC_STREAMOFF</constant> ioctl, apart of
-aborting or finishing any DMA in progress, unlocks any user pointer
-buffers locked in physical memory, and it removes all buffers from the
-incoming and outgoing queues. That means all images captured but not
-dequeued yet will be lost, likewise all images enqueued for output but
-not transmitted yet. I/O returns to the same state as after calling
-&VIDIOC-REQBUFS; and can be restarted accordingly.</para>
-
- <para>Both ioctls take a pointer to an integer, the desired buffer or
-stream type. This is the same as &v4l2-requestbuffers;
-<structfield>type</structfield>.</para>
-
- <para>Note applications can be preempted for unknown periods right
-before or after the <constant>VIDIOC_STREAMON</constant> or
-<constant>VIDIOC_STREAMOFF</constant> calls, there is no notion of
-starting or stopping "now". Buffer timestamps can be used to
-synchronize with other events.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>Streaming I/O is not supported, the buffer
-<structfield>type</structfield> is not supported, or no buffers have
-been allocated (memory mapping) or enqueued (output) yet.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EPIPE</errorcode></term>
- <listitem>
- <para>The driver implements <link
- linkend="pad-level-formats">pad-level format configuration</link> and
- the pipeline configuration is invalid.
- </para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
-
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/v4l/vidioc-subdev-g-fmt.xml b/Documentation/DocBook/v4l/vidioc-subdev-g-fmt.xml
deleted file mode 100644
index f367c57..0000000
--- a/Documentation/DocBook/v4l/vidioc-subdev-g-fmt.xml
+++ /dev/null
@@ -1,180 +0,0 @@
-<refentry id="vidioc-subdev-g-fmt">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_SUBDEV_G_FMT, VIDIOC_SUBDEV_S_FMT</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_SUBDEV_G_FMT</refname>
- <refname>VIDIOC_SUBDEV_S_FMT</refname>
- <refpurpose>Get or set the data format on a subdev pad</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_subdev_format *<parameter>argp</parameter>
- </paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_SUBDEV_G_FMT, VIDIOC_SUBDEV_S_FMT</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <note>
- <title>Experimental</title>
- <para>This is an <link linkend="experimental">experimental</link>
- interface and may change in the future.</para>
- </note>
-
- <para>These ioctls are used to negotiate the frame format at specific
- subdev pads in the image pipeline.</para>
-
- <para>To retrieve the current format applications set the
- <structfield>pad</structfield> field of a &v4l2-subdev-format; to the
- desired pad number as reported by the media API and the
- <structfield>which</structfield> field to
- <constant>V4L2_SUBDEV_FORMAT_ACTIVE</constant>. When they call the
- <constant>VIDIOC_SUBDEV_G_FMT</constant> ioctl with a pointer to this
- structure the driver fills the members of the <structfield>format</structfield>
- field.</para>
-
- <para>To change the current format applications set both the
- <structfield>pad</structfield> and <structfield>which</structfield> fields
- and all members of the <structfield>format</structfield> field. When they
- call the <constant>VIDIOC_SUBDEV_S_FMT</constant> ioctl with a pointer to this
- structure the driver verifies the requested format, adjusts it based on the
- hardware capabilities and configures the device. Upon return the
- &v4l2-subdev-format; contains the current format as would be returned by a
- <constant>VIDIOC_SUBDEV_G_FMT</constant> call.</para>
-
- <para>Applications can query the device capabilities by setting the
- <structfield>which</structfield> to
- <constant>V4L2_SUBDEV_FORMAT_TRY</constant>. When set, 'try' formats are not
- applied to the device by the driver, but are changed exactly as active
- formats and stored in the sub-device file handle. Two applications querying
- the same sub-device would thus not interact with each other.</para>
-
- <para>For instance, to try a format at the output pad of a sub-device,
- applications would first set the try format at the sub-device input with the
- <constant>VIDIOC_SUBDEV_S_FMT</constant> ioctl. They would then either
- retrieve the default format at the output pad with the
- <constant>VIDIOC_SUBDEV_G_FMT</constant> ioctl, or set the desired output
- pad format with the <constant>VIDIOC_SUBDEV_S_FMT</constant> ioctl and check
- the returned value.</para>
-
- <para>Try formats do not depend on active formats, but can depend on the
- current links configuration or sub-device controls value. For instance, a
- low-pass noise filter might crop pixels at the frame boundaries, modifying
- its output frame size.</para>
-
- <para>Drivers must not return an error solely because the requested format
- doesn't match the device capabilities. They must instead modify the format
- to match what the hardware can provide. The modified format should be as
- close as possible to the original request.</para>
-
- <table pgwide="1" frame="none" id="v4l2-subdev-format">
- <title>struct <structname>v4l2_subdev_format</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>pad</structfield></entry>
- <entry>Pad number as reported by the media controller API.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>which</structfield></entry>
- <entry>Format to modified, from &v4l2-subdev-format-whence;.</entry>
- </row>
- <row>
- <entry>&v4l2-mbus-framefmt;</entry>
- <entry><structfield>format</structfield></entry>
- <entry>Definition of an image format, see <xref
- linkend="v4l2-mbus-framefmt" /> for details.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[8]</entry>
- <entry>Reserved for future extensions. Applications and drivers must
- set the array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-subdev-format-whence">
- <title>enum <structname>v4l2_subdev_format_whence</structname></title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry>V4L2_SUBDEV_FORMAT_TRY</entry>
- <entry>0</entry>
- <entry>Try formats, used for querying device capabilities.</entry>
- </row>
- <row>
- <entry>V4L2_SUBDEV_FORMAT_ACTIVE</entry>
- <entry>1</entry>
- <entry>Active formats, applied to the hardware.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The format can't be changed because the pad is currently busy.
- This can be caused, for instance, by an active video stream on the
- pad. The ioctl must not be retried without performing another action
- to fix the problem first. Only returned by
- <constant>VIDIOC_SUBDEV_S_FMT</constant></para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The &v4l2-subdev-format; <structfield>pad</structfield>
- references a non-existing pad, or the <structfield>which</structfield>
- field references a non-existing format.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
diff --git a/Documentation/DocBook/v4l/vidioc-subscribe-event.xml b/Documentation/DocBook/v4l/vidioc-subscribe-event.xml
deleted file mode 100644
index 8b50179..0000000
--- a/Documentation/DocBook/v4l/vidioc-subscribe-event.xml
+++ /dev/null
@@ -1,133 +0,0 @@
-<refentry id="vidioc-subscribe-event">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</refname>
- <refpurpose>Subscribe or unsubscribe event</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcprototype>
- <funcdef>int <function>ioctl</function></funcdef>
- <paramdef>int <parameter>fd</parameter></paramdef>
- <paramdef>int <parameter>request</parameter></paramdef>
- <paramdef>struct v4l2_event_subscription
-*<parameter>argp</parameter></paramdef>
- </funcprototype>
- </funcsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Arguments</title>
-
- <variablelist>
- <varlistentry>
- <term><parameter>fd</parameter></term>
- <listitem>
- <para>&fd;</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>request</parameter></term>
- <listitem>
- <para>VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>Subscribe or unsubscribe V4L2 event. Subscribed events are
- dequeued by using the &VIDIOC-DQEVENT; ioctl.</para>
-
- <table frame="none" pgwide="1" id="v4l2-event-subscription">
- <title>struct <structname>v4l2_event_subscription</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>type</structfield></entry>
- <entry>Type of the event.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[7]</entry>
- <entry>Reserved for future extensions. Drivers and applications
- must set the array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table frame="none" pgwide="1" id="event-type">
- <title>Event Types</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_EVENT_ALL</constant></entry>
- <entry>0</entry>
- <entry>All events. V4L2_EVENT_ALL is valid only for
- VIDIOC_UNSUBSCRIBE_EVENT for unsubscribing all events at once.
- </entry>
- </row>
- <row>
- <entry><constant>V4L2_EVENT_VSYNC</constant></entry>
- <entry>1</entry>
- <entry>This event is triggered on the vertical sync.
- This event has &v4l2-event-vsync; associated with it.
- </entry>
- </row>
- <row>
- <entry><constant>V4L2_EVENT_EOS</constant></entry>
- <entry>2</entry>
- <entry>This event is triggered when the end of a stream is reached.
- This is typically used with MPEG decoders to report to the application
- when the last of the MPEG stream has been decoded.
- </entry>
- </row>
- <row>
- <entry><constant>V4L2_EVENT_PRIVATE_START</constant></entry>
- <entry>0x08000000</entry>
- <entry>Base event number for driver-private events.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table frame="none" pgwide="1" id="v4l2-event-vsync">
- <title>struct <structname>v4l2_event_vsync</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u8</entry>
- <entry><structfield>field</structfield></entry>
- <entry>The upcoming field. See &v4l2-field;.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- </refsect1>
-</refentry>
-<!--
-Local Variables:
-mode: sgml
-sgml-parent-document: "v4l2.sgml"
-indent-tabs-mode: nil
-End:
--->
diff --git a/Documentation/DocBook/writing-an-alsa-driver.tmpl b/Documentation/DocBook/writing-an-alsa-driver.tmpl
index 598c22f..5de23c0 100644
--- a/Documentation/DocBook/writing-an-alsa-driver.tmpl
+++ b/Documentation/DocBook/writing-an-alsa-driver.tmpl
@@ -4288,7 +4288,7 @@
<![CDATA[
struct snd_rawmidi *rmidi;
snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port, info_flags,
- irq, irq_flags, &rmidi);
+ irq, &rmidi);
]]>
</programlisting>
</informalexample>
@@ -4343,6 +4343,13 @@
by itself to start processing the output stream in the irq handler.
</para>
+ <para>
+ If the MPU-401 interface shares its interrupt with the other logical
+ devices on the card, set <constant>MPU401_INFO_IRQ_HOOK</constant>
+ (see <link linkend="midi-interface-interrupt-handler"><citetitle>
+ below</citetitle></link>).
+ </para>
+
<para>
Usually, the port address corresponds to the command port and
port + 1 corresponds to the data port. If not, you may change
@@ -4375,14 +4382,12 @@
</para>
<para>
- The 6th argument specifies the irq number for UART. If the irq
- is already allocated, pass 0 to the 7th argument
- (<parameter>irq_flags</parameter>). Otherwise, pass the flags
- for irq allocation
- (<constant>SA_XXX</constant> bits) to it, and the irq will be
- reserved by the mpu401-uart layer. If the card doesn't generate
- UART interrupts, pass -1 as the irq number. Then a timer
- interrupt will be invoked for polling.
+ The 6th argument specifies the ISA irq number that will be
+ allocated. If no interrupt is to be allocated (because your
+ code is already allocating a shared interrupt, or because the
+ device does not use interrupts), pass -1 instead.
+ For a MPU-401 device without an interrupt, a polling timer
+ will be used instead.
</para>
</section>
@@ -4390,12 +4395,13 @@
<title>Interrupt Handler</title>
<para>
When the interrupt is allocated in
- <function>snd_mpu401_uart_new()</function>, the private
- interrupt handler is used, hence you don't have anything else to do
- than creating the mpu401 stuff. Otherwise, you have to call
- <function>snd_mpu401_uart_interrupt()</function> explicitly when
- a UART interrupt is invoked and checked in your own interrupt
- handler.
+ <function>snd_mpu401_uart_new()</function>, an exclusive ISA
+ interrupt handler is automatically used, hence you don't have
+ anything else to do than creating the mpu401 stuff. Otherwise, you
+ have to set <constant>MPU401_INFO_IRQ_HOOK</constant>, and call
+ <function>snd_mpu401_uart_interrupt()</function> explicitly from your
+ own interrupt handler when it has determined that a UART interrupt
+ has occurred.
</para>
<para>
diff --git a/Documentation/PCI/MSI-HOWTO.txt b/Documentation/PCI/MSI-HOWTO.txt
index 3f5e0b0..53e6fca 100644
--- a/Documentation/PCI/MSI-HOWTO.txt
+++ b/Documentation/PCI/MSI-HOWTO.txt
@@ -45,7 +45,7 @@
bridges). In order to ensure that all the data has arrived in memory,
the interrupt handler must read a register on the device which raised
the interrupt. PCI transaction ordering rules require that all the data
-arrives in memory before the value can be returned from the register.
+arrive in memory before the value may be returned from the register.
Using MSIs avoids this problem as the interrupt-generating write cannot
pass the data writes, so by the time the interrupt is raised, the driver
knows that all the data has arrived in memory.
@@ -86,13 +86,13 @@
int pci_enable_msi(struct pci_dev *dev)
-A successful call will allocate ONE interrupt to the device, regardless
-of how many MSIs the device supports. The device will be switched from
+A successful call allocates ONE interrupt to the device, regardless
+of how many MSIs the device supports. The device is switched from
pin-based interrupt mode to MSI mode. The dev->irq number is changed
-to a new number which represents the message signaled interrupt.
-This function should be called before the driver calls request_irq()
-since enabling MSIs disables the pin-based IRQ and the driver will not
-receive interrupts on the old interrupt.
+to a new number which represents the message signaled interrupt;
+consequently, this function should be called before the driver calls
+request_irq(), because an MSI is delivered via a vector that is
+different from the vector of a pin-based interrupt.
4.2.2 pci_enable_msi_block
@@ -111,20 +111,20 @@
If this function returns a negative number, it indicates an error and
the driver should not attempt to request any more MSI interrupts for
-this device. If this function returns a positive number, it will be
-less than 'count' and indicate the number of interrupts that could have
-been allocated. In neither case will the irq value have been
-updated, nor will the device have been switched into MSI mode.
+this device. If this function returns a positive number, it is
+less than 'count' and indicates the number of interrupts that could have
+been allocated. In neither case is the irq value updated or the device
+switched into MSI mode.
The device driver must decide what action to take if
-pci_enable_msi_block() returns a value less than the number asked for.
-Some devices can make use of fewer interrupts than the maximum they
-request; in this case the driver should call pci_enable_msi_block()
+pci_enable_msi_block() returns a value less than the number requested.
+For instance, the driver could still make use of fewer interrupts;
+in this case the driver should call pci_enable_msi_block()
again. Note that it is not guaranteed to succeed, even when the
'count' has been reduced to the value returned from a previous call to
pci_enable_msi_block(). This is because there are multiple constraints
on the number of vectors that can be allocated; pci_enable_msi_block()
-will return as soon as it finds any constraint that doesn't allow the
+returns as soon as it finds any constraint that doesn't allow the
call to succeed.
4.2.3 pci_disable_msi
@@ -137,10 +137,10 @@
interrupt(s). The interrupt may subsequently be assigned to another
device, so drivers should not cache the value of dev->irq.
-A device driver must always call free_irq() on the interrupt(s)
-for which it has called request_irq() before calling this function.
-Failure to do so will result in a BUG_ON(), the device will be left with
-MSI enabled and will leak its vector.
+Before calling this function, a device driver must always call free_irq()
+on any interrupt for which it previously called request_irq().
+Failure to do so results in a BUG_ON(), leaving the device with
+MSI enabled and thus leaking its vector.
4.3 Using MSI-X
@@ -155,10 +155,10 @@
};
This allows for the device to use these interrupts in a sparse fashion;
-for example it could use interrupts 3 and 1027 and allocate only a
+for example, it could use interrupts 3 and 1027 and yet allocate only a
two-element array. The driver is expected to fill in the 'entry' value
-in each element of the array to indicate which entries it wants the kernel
-to assign interrupts for. It is invalid to fill in two entries with the
+in each element of the array to indicate for which entries the kernel
+should assign interrupts; it is invalid to fill in two entries with the
same number.
4.3.1 pci_enable_msix
@@ -168,10 +168,11 @@
Calling this function asks the PCI subsystem to allocate 'nvec' MSIs.
The 'entries' argument is a pointer to an array of msix_entry structs
which should be at least 'nvec' entries in size. On success, the
-function will return 0 and the device will have been switched into
-MSI-X interrupt mode. The 'vector' elements in each entry will have
-been filled in with the interrupt number. The driver should then call
-request_irq() for each 'vector' that it decides to use.
+device is switched into MSI-X mode and the function returns 0.
+The 'vector' member in each entry is populated with the interrupt number;
+the driver should then call request_irq() for each 'vector' that it
+decides to use. The device driver is responsible for keeping track of the
+interrupts assigned to the MSI-X vectors so it can free them again later.
If this function returns a negative number, it indicates an error and
the driver should not attempt to allocate any more MSI-X interrupts for
@@ -181,16 +182,14 @@
This function, in contrast with pci_enable_msi(), does not adjust
dev->irq. The device will not generate interrupts for this interrupt
-number once MSI-X is enabled. The device driver is responsible for
-keeping track of the interrupts assigned to the MSI-X vectors so it can
-free them again later.
+number once MSI-X is enabled.
Device drivers should normally call this function once per device
during the initialization phase.
-It is ideal if drivers can cope with a variable number of MSI-X interrupts,
+It is ideal if drivers can cope with a variable number of MSI-X interrupts;
there are many reasons why the platform may not be able to provide the
-exact number a driver asks for.
+exact number that a driver asks for.
A request loop to achieve that might look like:
@@ -212,15 +211,15 @@
void pci_disable_msix(struct pci_dev *dev)
-This API should be used to undo the effect of pci_enable_msix(). It frees
+This function should be used to undo the effect of pci_enable_msix(). It frees
the previously allocated message signaled interrupts. The interrupts may
subsequently be assigned to another device, so drivers should not cache
the value of the 'vector' elements over a call to pci_disable_msix().
-A device driver must always call free_irq() on the interrupt(s)
-for which it has called request_irq() before calling this function.
-Failure to do so will result in a BUG_ON(), the device will be left with
-MSI enabled and will leak its vector.
+Before calling this function, a device driver must always call free_irq()
+on any interrupt for which it previously called request_irq().
+Failure to do so results in a BUG_ON(), leaving the device with
+MSI-X enabled and thus leaking its vector.
4.3.3 The MSI-X Table
@@ -232,10 +231,10 @@
4.4 Handling devices implementing both MSI and MSI-X capabilities
If a device implements both MSI and MSI-X capabilities, it can
-run in either MSI mode or MSI-X mode but not both simultaneously.
+run in either MSI mode or MSI-X mode, but not both simultaneously.
This is a requirement of the PCI spec, and it is enforced by the
PCI layer. Calling pci_enable_msi() when MSI-X is already enabled or
-pci_enable_msix() when MSI is already enabled will result in an error.
+pci_enable_msix() when MSI is already enabled results in an error.
If a device driver wishes to switch between MSI and MSI-X at runtime,
it must first quiesce the device, then switch it back to pin-interrupt
mode, before calling pci_enable_msi() or pci_enable_msix() and resuming
@@ -251,7 +250,7 @@
above, MSI-X supports any number of interrupts between 1 and 2048.
In constrast, MSI is restricted to a maximum of 32 interrupts (and
must be a power of two). In addition, the MSI interrupt vectors must
-be allocated consecutively, so the system may not be able to allocate
+be allocated consecutively, so the system might not be able to allocate
as many vectors for MSI as it could for MSI-X. On some platforms, MSI
interrupts must all be targeted at the same set of CPUs whereas MSI-X
interrupts can all be targeted at different CPUs.
@@ -281,7 +280,7 @@
Using 'lspci -v' (as root) may show some devices with "MSI", "Message
Signalled Interrupts" or "MSI-X" capabilities. Each of these capabilities
-has an 'Enable' flag which will be followed with either "+" (enabled)
+has an 'Enable' flag which is followed with either "+" (enabled)
or "-" (disabled).
@@ -298,7 +297,7 @@
Some host chipsets simply don't support MSIs properly. If we're
lucky, the manufacturer knows this and has indicated it in the ACPI
-FADT table. In this case, Linux will automatically disable MSIs.
+FADT table. In this case, Linux automatically disables MSIs.
Some boards don't include this information in the table and so we have
to detect them ourselves. The complete list of these is found near the
quirk_disable_all_msi() function in drivers/pci/quirks.c.
@@ -317,7 +316,7 @@
PCI configuration space (especially the Hypertransport chipsets such
as the nVidia nForce and Serverworks HT2000). As with host chipsets,
Linux mostly knows about them and automatically enables MSIs if it can.
-If you have a bridge which Linux doesn't yet know about, you can enable
+If you have a bridge unknown to Linux, you can enable
MSIs in configuration space using whatever method you know works, then
enable MSIs on that bridge by doing:
@@ -327,7 +326,7 @@
0000:00:0e.0).
To disable MSIs, echo 0 instead of 1. Changing this value should be
-done with caution as it can break interrupt handling for all devices
+done with caution as it could break interrupt handling for all devices
below this bridge.
Again, please notify linux-pci@vger.kernel.org of any bridges that need
@@ -336,7 +335,7 @@
5.3. Disabling MSIs on a single device
Some devices are known to have faulty MSI implementations. Usually this
-is handled in the individual device driver but occasionally it's necessary
+is handled in the individual device driver, but occasionally it's necessary
to handle this with a quirk. Some drivers have an option to disable use
of MSI. While this is a convenient workaround for the driver author,
it is not good practise, and should not be emulated.
@@ -350,7 +349,7 @@
have enabled CONFIG_PCI_MSI.
Then, 'lspci -t' gives the list of bridges above a device. Reading
-/sys/bus/pci/devices/*/msi_bus will tell you whether MSI are enabled (1)
+/sys/bus/pci/devices/*/msi_bus will tell you whether MSIs are enabled (1)
or disabled (0). If 0 is found in any of the msi_bus files belonging
to bridges between the PCI root and the device, MSIs are disabled.
diff --git a/Documentation/PCI/pci.txt b/Documentation/PCI/pci.txt
index 6148d40..aa09e54 100644
--- a/Documentation/PCI/pci.txt
+++ b/Documentation/PCI/pci.txt
@@ -314,7 +314,7 @@
as the PCI "bus address" might have been remapped to a "host physical"
address by the arch/chip-set specific kernel support.
-See Documentation/IO-mapping.txt for how to access device registers
+See Documentation/io-mapping.txt for how to access device registers
or device memory.
The device driver needs to call pci_request_region() to verify
diff --git a/Documentation/RCU/NMI-RCU.txt b/Documentation/RCU/NMI-RCU.txt
index a8536cb..687777f 100644
--- a/Documentation/RCU/NMI-RCU.txt
+++ b/Documentation/RCU/NMI-RCU.txt
@@ -5,8 +5,8 @@
it is possible to use RCU to provide dynamic non-maskable interrupt
handlers, as well as dynamic irq handlers. This document describes
how to do this, drawing loosely from Zwane Mwaikambo's NMI-timer
-work in "arch/i386/oprofile/nmi_timer_int.c" and in
-"arch/i386/kernel/traps.c".
+work in "arch/x86/oprofile/nmi_timer_int.c" and in
+"arch/x86/kernel/traps.c".
The relevant pieces of code are listed below, each followed by a
brief explanation.
@@ -95,7 +95,7 @@
to free up the handler's data as soon as synchronize_sched() returns.
Important note: for this to work, the architecture in question must
-invoke irq_enter() and irq_exit() on NMI entry and exit, respectively.
+invoke nmi_enter() and nmi_exit() on NMI entry and exit, respectively.
Answer to Quick Quiz
diff --git a/Documentation/RCU/lockdep-splat.txt b/Documentation/RCU/lockdep-splat.txt
new file mode 100644
index 0000000..bf90611
--- /dev/null
+++ b/Documentation/RCU/lockdep-splat.txt
@@ -0,0 +1,110 @@
+Lockdep-RCU was added to the Linux kernel in early 2010
+(http://lwn.net/Articles/371986/). This facility checks for some common
+misuses of the RCU API, most notably using one of the rcu_dereference()
+family to access an RCU-protected pointer without the proper protection.
+When such misuse is detected, an lockdep-RCU splat is emitted.
+
+The usual cause of a lockdep-RCU slat is someone accessing an
+RCU-protected data structure without either (1) being in the right kind of
+RCU read-side critical section or (2) holding the right update-side lock.
+This problem can therefore be serious: it might result in random memory
+overwriting or worse. There can of course be false positives, this
+being the real world and all that.
+
+So let's look at an example RCU lockdep splat from 3.0-rc5, one that
+has long since been fixed:
+
+===============================
+[ INFO: suspicious RCU usage. ]
+-------------------------------
+block/cfq-iosched.c:2776 suspicious rcu_dereference_protected() usage!
+
+other info that might help us debug this:
+
+
+rcu_scheduler_active = 1, debug_locks = 0
+3 locks held by scsi_scan_6/1552:
+ #0: (&shost->scan_mutex){+.+.+.}, at: [<ffffffff8145efca>]
+scsi_scan_host_selected+0x5a/0x150
+ #1: (&eq->sysfs_lock){+.+...}, at: [<ffffffff812a5032>]
+elevator_exit+0x22/0x60
+ #2: (&(&q->__queue_lock)->rlock){-.-...}, at: [<ffffffff812b6233>]
+cfq_exit_queue+0x43/0x190
+
+stack backtrace:
+Pid: 1552, comm: scsi_scan_6 Not tainted 3.0.0-rc5 #17
+Call Trace:
+ [<ffffffff810abb9b>] lockdep_rcu_dereference+0xbb/0xc0
+ [<ffffffff812b6139>] __cfq_exit_single_io_context+0xe9/0x120
+ [<ffffffff812b626c>] cfq_exit_queue+0x7c/0x190
+ [<ffffffff812a5046>] elevator_exit+0x36/0x60
+ [<ffffffff812a802a>] blk_cleanup_queue+0x4a/0x60
+ [<ffffffff8145cc09>] scsi_free_queue+0x9/0x10
+ [<ffffffff81460944>] __scsi_remove_device+0x84/0xd0
+ [<ffffffff8145dca3>] scsi_probe_and_add_lun+0x353/0xb10
+ [<ffffffff817da069>] ? error_exit+0x29/0xb0
+ [<ffffffff817d98ed>] ? _raw_spin_unlock_irqrestore+0x3d/0x80
+ [<ffffffff8145e722>] __scsi_scan_target+0x112/0x680
+ [<ffffffff812c690d>] ? trace_hardirqs_off_thunk+0x3a/0x3c
+ [<ffffffff817da069>] ? error_exit+0x29/0xb0
+ [<ffffffff812bcc60>] ? kobject_del+0x40/0x40
+ [<ffffffff8145ed16>] scsi_scan_channel+0x86/0xb0
+ [<ffffffff8145f0b0>] scsi_scan_host_selected+0x140/0x150
+ [<ffffffff8145f149>] do_scsi_scan_host+0x89/0x90
+ [<ffffffff8145f170>] do_scan_async+0x20/0x160
+ [<ffffffff8145f150>] ? do_scsi_scan_host+0x90/0x90
+ [<ffffffff810975b6>] kthread+0xa6/0xb0
+ [<ffffffff817db154>] kernel_thread_helper+0x4/0x10
+ [<ffffffff81066430>] ? finish_task_switch+0x80/0x110
+ [<ffffffff817d9c04>] ? retint_restore_args+0xe/0xe
+ [<ffffffff81097510>] ? __init_kthread_worker+0x70/0x70
+ [<ffffffff817db150>] ? gs_change+0xb/0xb
+
+Line 2776 of block/cfq-iosched.c in v3.0-rc5 is as follows:
+
+ if (rcu_dereference(ioc->ioc_data) == cic) {
+
+This form says that it must be in a plain vanilla RCU read-side critical
+section, but the "other info" list above shows that this is not the
+case. Instead, we hold three locks, one of which might be RCU related.
+And maybe that lock really does protect this reference. If so, the fix
+is to inform RCU, perhaps by changing __cfq_exit_single_io_context() to
+take the struct request_queue "q" from cfq_exit_queue() as an argument,
+which would permit us to invoke rcu_dereference_protected as follows:
+
+ if (rcu_dereference_protected(ioc->ioc_data,
+ lockdep_is_held(&q->queue_lock)) == cic) {
+
+With this change, there would be no lockdep-RCU splat emitted if this
+code was invoked either from within an RCU read-side critical section
+or with the ->queue_lock held. In particular, this would have suppressed
+the above lockdep-RCU splat because ->queue_lock is held (see #2 in the
+list above).
+
+On the other hand, perhaps we really do need an RCU read-side critical
+section. In this case, the critical section must span the use of the
+return value from rcu_dereference(), or at least until there is some
+reference count incremented or some such. One way to handle this is to
+add rcu_read_lock() and rcu_read_unlock() as follows:
+
+ rcu_read_lock();
+ if (rcu_dereference(ioc->ioc_data) == cic) {
+ spin_lock(&ioc->lock);
+ rcu_assign_pointer(ioc->ioc_data, NULL);
+ spin_unlock(&ioc->lock);
+ }
+ rcu_read_unlock();
+
+With this change, the rcu_dereference() is always within an RCU
+read-side critical section, which again would have suppressed the
+above lockdep-RCU splat.
+
+But in this particular case, we don't actually deference the pointer
+returned from rcu_dereference(). Instead, that pointer is just compared
+to the cic pointer, which means that the rcu_dereference() can be replaced
+by rcu_access_pointer() as follows:
+
+ if (rcu_access_pointer(ioc->ioc_data) == cic) {
+
+Because it is legal to invoke rcu_access_pointer() without protection,
+this change would also suppress the above lockdep-RCU splat.
diff --git a/Documentation/RCU/lockdep.txt b/Documentation/RCU/lockdep.txt
index d7a49b2..a102d4b 100644
--- a/Documentation/RCU/lockdep.txt
+++ b/Documentation/RCU/lockdep.txt
@@ -32,9 +32,27 @@
srcu_dereference(p, sp):
Check for SRCU read-side critical section.
rcu_dereference_check(p, c):
- Use explicit check expression "c". This is useful in
- code that is invoked by both readers and updaters.
- rcu_dereference_raw(p)
+ Use explicit check expression "c" along with
+ rcu_read_lock_held(). This is useful in code that is
+ invoked by both RCU readers and updaters.
+ rcu_dereference_bh_check(p, c):
+ Use explicit check expression "c" along with
+ rcu_read_lock_bh_held(). This is useful in code that
+ is invoked by both RCU-bh readers and updaters.
+ rcu_dereference_sched_check(p, c):
+ Use explicit check expression "c" along with
+ rcu_read_lock_sched_held(). This is useful in code that
+ is invoked by both RCU-sched readers and updaters.
+ srcu_dereference_check(p, c):
+ Use explicit check expression "c" along with
+ srcu_read_lock_held()(). This is useful in code that
+ is invoked by both SRCU readers and updaters.
+ rcu_dereference_index_check(p, c):
+ Use explicit check expression "c", but the caller
+ must supply one of the rcu_read_lock_held() functions.
+ This is useful in code that uses RCU-protected arrays
+ that is invoked by both RCU readers and updaters.
+ rcu_dereference_raw(p):
Don't check. (Use sparingly, if at all.)
rcu_dereference_protected(p, c):
Use explicit check expression "c", and omit all barriers
@@ -48,13 +66,11 @@
value of the pointer itself, for example, against NULL.
The rcu_dereference_check() check expression can be any boolean
-expression, but would normally include one of the rcu_read_lock_held()
-family of functions and a lockdep expression. However, any boolean
-expression can be used. For a moderately ornate example, consider
-the following:
+expression, but would normally include a lockdep expression. However,
+any boolean expression can be used. For a moderately ornate example,
+consider the following:
file = rcu_dereference_check(fdt->fd[fd],
- rcu_read_lock_held() ||
lockdep_is_held(&files->file_lock) ||
atomic_read(&files->count) == 1);
@@ -62,7 +78,7 @@
and, if CONFIG_PROVE_RCU is configured, verifies that this expression
is used in:
-1. An RCU read-side critical section, or
+1. An RCU read-side critical section (implicit), or
2. with files->file_lock held, or
3. on an unshared files_struct.
diff --git a/Documentation/RCU/torture.txt b/Documentation/RCU/torture.txt
index 5d90167..783d6c1 100644
--- a/Documentation/RCU/torture.txt
+++ b/Documentation/RCU/torture.txt
@@ -42,7 +42,7 @@
fqs_stutter Wait time (in seconds) between consecutive bursts
of calls to force_quiescent_state().
-irqreaders Says to invoke RCU readers from irq level. This is currently
+irqreader Says to invoke RCU readers from irq level. This is currently
done via timers. Defaults to "1" for variants of RCU that
permit this. (Or, more accurately, variants of RCU that do
-not- permit this know to ignore this variable.)
@@ -79,19 +79,68 @@
Specifying "stutter=0" causes the test to run continuously
without pausing, which is the old default behavior.
+test_boost Whether or not to test the ability of RCU to do priority
+ boosting. Defaults to "test_boost=1", which performs
+ RCU priority-inversion testing only if the selected
+ RCU implementation supports priority boosting. Specifying
+ "test_boost=0" never performs RCU priority-inversion
+ testing. Specifying "test_boost=2" performs RCU
+ priority-inversion testing even if the selected RCU
+ implementation does not support RCU priority boosting,
+ which can be used to test rcutorture's ability to
+ carry out RCU priority-inversion testing.
+
+test_boost_interval
+ The number of seconds in an RCU priority-inversion test
+ cycle. Defaults to "test_boost_interval=7". It is
+ usually wise for this value to be relatively prime to
+ the value selected for "stutter".
+
+test_boost_duration
+ The number of seconds to do RCU priority-inversion testing
+ within any given "test_boost_interval". Defaults to
+ "test_boost_duration=4".
+
test_no_idle_hz Whether or not to test the ability of RCU to operate in
a kernel that disables the scheduling-clock interrupt to
idle CPUs. Boolean parameter, "1" to test, "0" otherwise.
Defaults to omitting this test.
-torture_type The type of RCU to test: "rcu" for the rcu_read_lock() API,
- "rcu_sync" for rcu_read_lock() with synchronous reclamation,
- "rcu_bh" for the rcu_read_lock_bh() API, "rcu_bh_sync" for
- rcu_read_lock_bh() with synchronous reclamation, "srcu" for
- the "srcu_read_lock()" API, "sched" for the use of
- preempt_disable() together with synchronize_sched(),
- and "sched_expedited" for the use of preempt_disable()
- with synchronize_sched_expedited().
+torture_type The type of RCU to test, with string values as follows:
+
+ "rcu": rcu_read_lock(), rcu_read_unlock() and call_rcu().
+
+ "rcu_sync": rcu_read_lock(), rcu_read_unlock(), and
+ synchronize_rcu().
+
+ "rcu_expedited": rcu_read_lock(), rcu_read_unlock(), and
+ synchronize_rcu_expedited().
+
+ "rcu_bh": rcu_read_lock_bh(), rcu_read_unlock_bh(), and
+ call_rcu_bh().
+
+ "rcu_bh_sync": rcu_read_lock_bh(), rcu_read_unlock_bh(),
+ and synchronize_rcu_bh().
+
+ "rcu_bh_expedited": rcu_read_lock_bh(), rcu_read_unlock_bh(),
+ and synchronize_rcu_bh_expedited().
+
+ "srcu": srcu_read_lock(), srcu_read_unlock() and
+ synchronize_srcu().
+
+ "srcu_expedited": srcu_read_lock(), srcu_read_unlock() and
+ synchronize_srcu_expedited().
+
+ "sched": preempt_disable(), preempt_enable(), and
+ call_rcu_sched().
+
+ "sched_sync": preempt_disable(), preempt_enable(), and
+ synchronize_sched().
+
+ "sched_expedited": preempt_disable(), preempt_enable(), and
+ synchronize_sched_expedited().
+
+ Defaults to "rcu".
verbose Enable debug printk()s. Default is disabled.
@@ -100,12 +149,12 @@
The statistics output is as follows:
- rcu-torture: --- Start of test: nreaders=16 stat_interval=0 verbose=0
- rcu-torture: rtc: 0000000000000000 ver: 1916 tfle: 0 rta: 1916 rtaf: 0 rtf: 1915
- rcu-torture: Reader Pipe: 1466408 9747 0 0 0 0 0 0 0 0 0
- rcu-torture: Reader Batch: 1464477 11678 0 0 0 0 0 0 0 0
- rcu-torture: Free-Block Circulation: 1915 1915 1915 1915 1915 1915 1915 1915 1915 1915 0
- rcu-torture: --- End of test
+ rcu-torture:--- Start of test: nreaders=16 nfakewriters=4 stat_interval=30 verbose=0 test_no_idle_hz=1 shuffle_interval=3 stutter=5 irqreader=1 fqs_duration=0 fqs_holdoff=0 fqs_stutter=3 test_boost=1/0 test_boost_interval=7 test_boost_duration=4
+ rcu-torture: rtc: (null) ver: 155441 tfle: 0 rta: 155441 rtaf: 8884 rtf: 155440 rtmbe: 0 rtbke: 0 rtbre: 0 rtbf: 0 rtb: 0 nt: 3055767
+ rcu-torture: Reader Pipe: 727860534 34213 0 0 0 0 0 0 0 0 0
+ rcu-torture: Reader Batch: 727877838 17003 0 0 0 0 0 0 0 0 0
+ rcu-torture: Free-Block Circulation: 155440 155440 155440 155440 155440 155440 155440 155440 155440 155440 0
+ rcu-torture:--- End of test: SUCCESS: nreaders=16 nfakewriters=4 stat_interval=30 verbose=0 test_no_idle_hz=1 shuffle_interval=3 stutter=5 irqreader=1 fqs_duration=0 fqs_holdoff=0 fqs_stutter=3 test_boost=1/0 test_boost_interval=7 test_boost_duration=4
The command "dmesg | grep torture:" will extract this information on
most systems. On more esoteric configurations, it may be necessary to
@@ -113,26 +162,55 @@
the RCU torture test. The printk()s use KERN_ALERT, so they should
be evident. ;-)
+The first and last lines show the rcutorture module parameters, and the
+last line shows either "SUCCESS" or "FAILURE", based on rcutorture's
+automatic determination as to whether RCU operated correctly.
+
The entries are as follows:
o "rtc": The hexadecimal address of the structure currently visible
to readers.
-o "ver": The number of times since boot that the rcutw writer task
+o "ver": The number of times since boot that the RCU writer task
has changed the structure visible to readers.
o "tfle": If non-zero, indicates that the "torture freelist"
- containing structure to be placed into the "rtc" area is empty.
+ containing structures to be placed into the "rtc" area is empty.
This condition is important, since it can fool you into thinking
that RCU is working when it is not. :-/
o "rta": Number of structures allocated from the torture freelist.
o "rtaf": Number of allocations from the torture freelist that have
- failed due to the list being empty.
+ failed due to the list being empty. It is not unusual for this
+ to be non-zero, but it is bad for it to be a large fraction of
+ the value indicated by "rta".
o "rtf": Number of frees into the torture freelist.
+o "rtmbe": A non-zero value indicates that rcutorture believes that
+ rcu_assign_pointer() and rcu_dereference() are not working
+ correctly. This value should be zero.
+
+o "rtbke": rcutorture was unable to create the real-time kthreads
+ used to force RCU priority inversion. This value should be zero.
+
+o "rtbre": Although rcutorture successfully created the kthreads
+ used to force RCU priority inversion, it was unable to set them
+ to the real-time priority level of 1. This value should be zero.
+
+o "rtbf": The number of times that RCU priority boosting failed
+ to resolve RCU priority inversion.
+
+o "rtb": The number of times that rcutorture attempted to force
+ an RCU priority inversion condition. If you are testing RCU
+ priority boosting via the "test_boost" module parameter, this
+ value should be non-zero.
+
+o "nt": The number of times rcutorture ran RCU read-side code from
+ within a timer handler. This value should be non-zero only
+ if you specified the "irqreader" module parameter.
+
o "Reader Pipe": Histogram of "ages" of structures seen by readers.
If any entries past the first two are non-zero, RCU is broken.
And rcutorture prints the error flag string "!!!" to make sure
@@ -162,26 +240,15 @@
somehow gets incremented farther than it should.
Different implementations of RCU can provide implementation-specific
-additional information. For example, SRCU provides the following:
+additional information. For example, SRCU provides the following
+additional line:
- srcu-torture: rtc: f8cf46a8 ver: 355 tfle: 0 rta: 356 rtaf: 0 rtf: 346 rtmbe: 0
- srcu-torture: Reader Pipe: 559738 939 0 0 0 0 0 0 0 0 0
- srcu-torture: Reader Batch: 560434 243 0 0 0 0 0 0 0 0
- srcu-torture: Free-Block Circulation: 355 354 353 352 351 350 349 348 347 346 0
srcu-torture: per-CPU(idx=1): 0(0,1) 1(0,1) 2(0,0) 3(0,1)
-The first four lines are similar to those for RCU. The last line shows
-the per-CPU counter state. The numbers in parentheses are the values
-of the "old" and "current" counters for the corresponding CPU. The
-"idx" value maps the "old" and "current" values to the underlying array,
-and is useful for debugging.
-
-Similarly, sched_expedited RCU provides the following:
-
- sched_expedited-torture: rtc: d0000000016c1880 ver: 1090796 tfle: 0 rta: 1090796 rtaf: 0 rtf: 1090787 rtmbe: 0 nt: 27713319
- sched_expedited-torture: Reader Pipe: 12660320201 95875 0 0 0 0 0 0 0 0 0
- sched_expedited-torture: Reader Batch: 12660424885 0 0 0 0 0 0 0 0 0 0
- sched_expedited-torture: Free-Block Circulation: 1090795 1090795 1090794 1090793 1090792 1090791 1090790 1090789 1090788 1090787 0
+This line shows the per-CPU counter state. The numbers in parentheses are
+the values of the "old" and "current" counters for the corresponding CPU.
+The "idx" value maps the "old" and "current" values to the underlying
+array, and is useful for debugging.
USAGE
diff --git a/Documentation/RCU/trace.txt b/Documentation/RCU/trace.txt
index 8173cec..aaf65f6 100644
--- a/Documentation/RCU/trace.txt
+++ b/Documentation/RCU/trace.txt
@@ -33,23 +33,23 @@
The output of "cat rcu/rcudata" looks as follows:
rcu_sched:
- 0 c=20972 g=20973 pq=1 pqc=20972 qp=0 dt=545/1/0 df=50 of=0 ri=0 ql=163 qs=NRW. kt=0/W/0 ktl=ebc3 b=10 ci=153737 co=0 ca=0
- 1 c=20972 g=20973 pq=1 pqc=20972 qp=0 dt=967/1/0 df=58 of=0 ri=0 ql=634 qs=NRW. kt=0/W/1 ktl=58c b=10 ci=191037 co=0 ca=0
- 2 c=20972 g=20973 pq=1 pqc=20972 qp=0 dt=1081/1/0 df=175 of=0 ri=0 ql=74 qs=N.W. kt=0/W/2 ktl=da94 b=10 ci=75991 co=0 ca=0
- 3 c=20942 g=20943 pq=1 pqc=20942 qp=1 dt=1846/0/0 df=404 of=0 ri=0 ql=0 qs=.... kt=0/W/3 ktl=d1cd b=10 ci=72261 co=0 ca=0
- 4 c=20972 g=20973 pq=1 pqc=20972 qp=0 dt=369/1/0 df=83 of=0 ri=0 ql=48 qs=N.W. kt=0/W/4 ktl=e0e7 b=10 ci=128365 co=0 ca=0
- 5 c=20972 g=20973 pq=1 pqc=20972 qp=0 dt=381/1/0 df=64 of=0 ri=0 ql=169 qs=NRW. kt=0/W/5 ktl=fb2f b=10 ci=164360 co=0 ca=0
- 6 c=20972 g=20973 pq=1 pqc=20972 qp=0 dt=1037/1/0 df=183 of=0 ri=0 ql=62 qs=N.W. kt=0/W/6 ktl=d2ad b=10 ci=65663 co=0 ca=0
- 7 c=20897 g=20897 pq=1 pqc=20896 qp=0 dt=1572/0/0 df=382 of=0 ri=0 ql=0 qs=.... kt=0/W/7 ktl=cf15 b=10 ci=75006 co=0 ca=0
+ 0 c=20972 g=20973 pq=1 pgp=20973 qp=0 dt=545/1/0 df=50 of=0 ri=0 ql=163 qs=NRW. kt=0/W/0 ktl=ebc3 b=10 ci=153737 co=0 ca=0
+ 1 c=20972 g=20973 pq=1 pgp=20973 qp=0 dt=967/1/0 df=58 of=0 ri=0 ql=634 qs=NRW. kt=0/W/1 ktl=58c b=10 ci=191037 co=0 ca=0
+ 2 c=20972 g=20973 pq=1 pgp=20973 qp=0 dt=1081/1/0 df=175 of=0 ri=0 ql=74 qs=N.W. kt=0/W/2 ktl=da94 b=10 ci=75991 co=0 ca=0
+ 3 c=20942 g=20943 pq=1 pgp=20942 qp=1 dt=1846/0/0 df=404 of=0 ri=0 ql=0 qs=.... kt=0/W/3 ktl=d1cd b=10 ci=72261 co=0 ca=0
+ 4 c=20972 g=20973 pq=1 pgp=20973 qp=0 dt=369/1/0 df=83 of=0 ri=0 ql=48 qs=N.W. kt=0/W/4 ktl=e0e7 b=10 ci=128365 co=0 ca=0
+ 5 c=20972 g=20973 pq=1 pgp=20973 qp=0 dt=381/1/0 df=64 of=0 ri=0 ql=169 qs=NRW. kt=0/W/5 ktl=fb2f b=10 ci=164360 co=0 ca=0
+ 6 c=20972 g=20973 pq=1 pgp=20973 qp=0 dt=1037/1/0 df=183 of=0 ri=0 ql=62 qs=N.W. kt=0/W/6 ktl=d2ad b=10 ci=65663 co=0 ca=0
+ 7 c=20897 g=20897 pq=1 pgp=20896 qp=0 dt=1572/0/0 df=382 of=0 ri=0 ql=0 qs=.... kt=0/W/7 ktl=cf15 b=10 ci=75006 co=0 ca=0
rcu_bh:
- 0 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=545/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/0 ktl=ebc3 b=10 ci=0 co=0 ca=0
- 1 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=967/1/0 df=3 of=0 ri=1 ql=0 qs=.... kt=0/W/1 ktl=58c b=10 ci=151 co=0 ca=0
- 2 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=1081/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/2 ktl=da94 b=10 ci=0 co=0 ca=0
- 3 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=1846/0/0 df=8 of=0 ri=1 ql=0 qs=.... kt=0/W/3 ktl=d1cd b=10 ci=0 co=0 ca=0
- 4 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=369/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/4 ktl=e0e7 b=10 ci=0 co=0 ca=0
- 5 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=381/1/0 df=4 of=0 ri=1 ql=0 qs=.... kt=0/W/5 ktl=fb2f b=10 ci=0 co=0 ca=0
- 6 c=1480 g=1480 pq=1 pqc=1479 qp=0 dt=1037/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/6 ktl=d2ad b=10 ci=0 co=0 ca=0
- 7 c=1474 g=1474 pq=1 pqc=1473 qp=0 dt=1572/0/0 df=8 of=0 ri=1 ql=0 qs=.... kt=0/W/7 ktl=cf15 b=10 ci=0 co=0 ca=0
+ 0 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=545/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/0 ktl=ebc3 b=10 ci=0 co=0 ca=0
+ 1 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=967/1/0 df=3 of=0 ri=1 ql=0 qs=.... kt=0/W/1 ktl=58c b=10 ci=151 co=0 ca=0
+ 2 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=1081/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/2 ktl=da94 b=10 ci=0 co=0 ca=0
+ 3 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=1846/0/0 df=8 of=0 ri=1 ql=0 qs=.... kt=0/W/3 ktl=d1cd b=10 ci=0 co=0 ca=0
+ 4 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=369/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/4 ktl=e0e7 b=10 ci=0 co=0 ca=0
+ 5 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=381/1/0 df=4 of=0 ri=1 ql=0 qs=.... kt=0/W/5 ktl=fb2f b=10 ci=0 co=0 ca=0
+ 6 c=1480 g=1480 pq=1 pgp=1480 qp=0 dt=1037/1/0 df=6 of=0 ri=1 ql=0 qs=.... kt=0/W/6 ktl=d2ad b=10 ci=0 co=0 ca=0
+ 7 c=1474 g=1474 pq=1 pgp=1473 qp=0 dt=1572/0/0 df=8 of=0 ri=1 ql=0 qs=.... kt=0/W/7 ktl=cf15 b=10 ci=0 co=0 ca=0
The first section lists the rcu_data structures for rcu_sched, the second
for rcu_bh. Note that CONFIG_TREE_PREEMPT_RCU kernels will have an
@@ -84,7 +84,7 @@
CPU has not yet reported that fact, (2) some other CPU has not
yet reported for this grace period, or (3) both.
-o "pqc" indicates which grace period the last-observed quiescent
+o "pgp" indicates which grace period the last-observed quiescent
state for this CPU corresponds to. This is important for handling
the race between CPU 0 reporting an extended dynticks-idle
quiescent state for CPU 1 and CPU 1 suddenly waking up and
@@ -184,10 +184,14 @@
The number after the final slash is the CPU that the kthread
is actually running on.
+ This field is displayed only for CONFIG_RCU_BOOST kernels.
+
o "ktl" is the low-order 16 bits (in hexadecimal) of the count of
the number of times that this CPU's per-CPU kthread has gone
through its loop servicing invoke_rcu_cpu_kthread() requests.
+ This field is displayed only for CONFIG_RCU_BOOST kernels.
+
o "b" is the batch limit for this CPU. If more than this number
of RCU callbacks is ready to invoke, then the remainder will
be deferred.
diff --git a/Documentation/SubmitChecklist b/Documentation/SubmitChecklist
index 7b13be4..dc0e332 100644
--- a/Documentation/SubmitChecklist
+++ b/Documentation/SubmitChecklist
@@ -53,8 +53,8 @@
12: Has been tested with CONFIG_PREEMPT, CONFIG_DEBUG_PREEMPT,
CONFIG_DEBUG_SLAB, CONFIG_DEBUG_PAGEALLOC, CONFIG_DEBUG_MUTEXES,
- CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_ATOMIC_SLEEP all simultaneously
- enabled.
+ CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_ATOMIC_SLEEP, CONFIG_PROVE_RCU
+ and CONFIG_DEBUG_OBJECTS_RCU_HEAD all simultaneously enabled.
13: Has been build- and runtime tested with and without CONFIG_SMP and
CONFIG_PREEMPT.
diff --git a/Documentation/SubmittingDrivers b/Documentation/SubmittingDrivers
index 319baa8..36d16bb 100644
--- a/Documentation/SubmittingDrivers
+++ b/Documentation/SubmittingDrivers
@@ -130,7 +130,7 @@
ftp.??.kernel.org:/pub/linux/kernel/...
?? == your country code, such as "us", "uk", "fr", etc.
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git
+ http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git
Linux kernel mailing list:
linux-kernel@vger.kernel.org
diff --git a/Documentation/SubmittingPatches b/Documentation/SubmittingPatches
index 569f353..4468ce2 100644
--- a/Documentation/SubmittingPatches
+++ b/Documentation/SubmittingPatches
@@ -303,7 +303,7 @@
The sign-off is a simple line at the end of the explanation for the
patch, which certifies that you wrote it or otherwise have the right to
-pass it on as a open-source patch. The rules are pretty simple: if you
+pass it on as an open-source patch. The rules are pretty simple: if you
can certify the below:
Developer's Certificate of Origin 1.1
diff --git a/Documentation/acpi/apei/einj.txt b/Documentation/acpi/apei/einj.txt
index dfab718..5cc699b 100644
--- a/Documentation/acpi/apei/einj.txt
+++ b/Documentation/acpi/apei/einj.txt
@@ -48,12 +48,19 @@
- param1
This file is used to set the first error parameter value. Effect of
parameter depends on error_type specified. For memory error, this is
- physical memory address.
+ physical memory address. Only available if param_extension module
+ parameter is specified.
- param2
This file is used to set the second error parameter value. Effect of
parameter depends on error_type specified. For memory error, this is
- physical memory address mask.
+ physical memory address mask. Only available if param_extension
+ module parameter is specified.
+
+Injecting parameter support is a BIOS version specific extension, that
+is, it only works on some BIOS version. If you want to use it, please
+make sure your BIOS version has the proper support and specify
+"param_extension=y" in module parameter.
For more information about EINJ, please refer to ACPI specification
version 4.0, section 17.5.
diff --git a/Documentation/arm/Samsung-S3C24XX/Overview.txt b/Documentation/arm/Samsung-S3C24XX/Overview.txt
index c12bfc1..359587b 100644
--- a/Documentation/arm/Samsung-S3C24XX/Overview.txt
+++ b/Documentation/arm/Samsung-S3C24XX/Overview.txt
@@ -8,10 +8,13 @@
The Samsung S3C24XX range of ARM9 System-on-Chip CPUs are supported
by the 's3c2410' architecture of ARM Linux. Currently the S3C2410,
- S3C2412, S3C2413, S3C2416 S3C2440, S3C2442, S3C2443 and S3C2450 devices
+ S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443 and S3C2450 devices
are supported.
- Support for the S3C2400 and S3C24A0 series are in progress.
+ Support for the S3C2400 and S3C24A0 series was never completed and the
+ corresponding code has been removed after a while. If someone wishes to
+ revive this effort, partial support can be retrieved from earlier Linux
+ versions.
The S3C2416 and S3C2450 devices are very similar and S3C2450 support is
included under the arch/arm/mach-s3c2416 directory. Note, whilst core
diff --git a/Documentation/blackfin/bfin-gpio-notes.txt b/Documentation/blackfin/bfin-gpio-notes.txt
index f731c1e..d36b01f 100644
--- a/Documentation/blackfin/bfin-gpio-notes.txt
+++ b/Documentation/blackfin/bfin-gpio-notes.txt
@@ -1,5 +1,5 @@
/*
- * File: Documentation/blackfin/bfin-gpio-note.txt
+ * File: Documentation/blackfin/bfin-gpio-notes.txt
* Based on:
* Author:
*
diff --git a/Documentation/block/biodoc.txt b/Documentation/block/biodoc.txt
index c6d84cf..e418dc0 100644
--- a/Documentation/block/biodoc.txt
+++ b/Documentation/block/biodoc.txt
@@ -186,7 +186,7 @@
do not have a corresponding kernel virtual address space mapping) and
low-memory pages.
-Note: Please refer to Documentation/PCI/PCI-DMA-mapping.txt for a discussion
+Note: Please refer to Documentation/DMA-API-HOWTO.txt for a discussion
on PCI high mem DMA aspects and mapping of scatter gather lists, and support
for 64 bit PCI.
diff --git a/Documentation/block/cfq-iosched.txt b/Documentation/block/cfq-iosched.txt
index e578fee..6d670f5 100644
--- a/Documentation/block/cfq-iosched.txt
+++ b/Documentation/block/cfq-iosched.txt
@@ -43,3 +43,74 @@
to IOPS mode and starts providing fairness in terms of number of requests
dispatched. Note that this mode switching takes effect only for group
scheduling. For non-cgroup users nothing should change.
+
+CFQ IO scheduler Idling Theory
+===============================
+Idling on a queue is primarily about waiting for the next request to come
+on same queue after completion of a request. In this process CFQ will not
+dispatch requests from other cfq queues even if requests are pending there.
+
+The rationale behind idling is that it can cut down on number of seeks
+on rotational media. For example, if a process is doing dependent
+sequential reads (next read will come on only after completion of previous
+one), then not dispatching request from other queue should help as we
+did not move the disk head and kept on dispatching sequential IO from
+one queue.
+
+CFQ has following service trees and various queues are put on these trees.
+
+ sync-idle sync-noidle async
+
+All cfq queues doing synchronous sequential IO go on to sync-idle tree.
+On this tree we idle on each queue individually.
+
+All synchronous non-sequential queues go on sync-noidle tree. Also any
+request which are marked with REQ_NOIDLE go on this service tree. On this
+tree we do not idle on individual queues instead idle on the whole group
+of queues or the tree. So if there are 4 queues waiting for IO to dispatch
+we will idle only once last queue has dispatched the IO and there is
+no more IO on this service tree.
+
+All async writes go on async service tree. There is no idling on async
+queues.
+
+CFQ has some optimizations for SSDs and if it detects a non-rotational
+media which can support higher queue depth (multiple requests at in
+flight at a time), then it cuts down on idling of individual queues and
+all the queues move to sync-noidle tree and only tree idle remains. This
+tree idling provides isolation with buffered write queues on async tree.
+
+FAQ
+===
+Q1. Why to idle at all on queues marked with REQ_NOIDLE.
+
+A1. We only do tree idle (all queues on sync-noidle tree) on queues marked
+ with REQ_NOIDLE. This helps in providing isolation with all the sync-idle
+ queues. Otherwise in presence of many sequential readers, other
+ synchronous IO might not get fair share of disk.
+
+ For example, if there are 10 sequential readers doing IO and they get
+ 100ms each. If a REQ_NOIDLE request comes in, it will be scheduled
+ roughly after 1 second. If after completion of REQ_NOIDLE request we
+ do not idle, and after a couple of milli seconds a another REQ_NOIDLE
+ request comes in, again it will be scheduled after 1second. Repeat it
+ and notice how a workload can lose its disk share and suffer due to
+ multiple sequential readers.
+
+ fsync can generate dependent IO where bunch of data is written in the
+ context of fsync, and later some journaling data is written. Journaling
+ data comes in only after fsync has finished its IO (atleast for ext4
+ that seemed to be the case). Now if one decides not to idle on fsync
+ thread due to REQ_NOIDLE, then next journaling write will not get
+ scheduled for another second. A process doing small fsync, will suffer
+ badly in presence of multiple sequential readers.
+
+ Hence doing tree idling on threads using REQ_NOIDLE flag on requests
+ provides isolation from multiple sequential readers and at the same
+ time we do not idle on individual threads.
+
+Q2. When to specify REQ_NOIDLE
+A2. I would think whenever one is doing synchronous write and not expecting
+ more writes to be dispatched from same context soon, should be able
+ to specify REQ_NOIDLE on writes and that probably should work well for
+ most of the cases.
diff --git a/Documentation/block/queue-sysfs.txt b/Documentation/block/queue-sysfs.txt
index f652740..d8147b3 100644
--- a/Documentation/block/queue-sysfs.txt
+++ b/Documentation/block/queue-sysfs.txt
@@ -45,9 +45,13 @@
rq_affinity (RW)
----------------
-If this option is enabled, the block layer will migrate request completions
-to the CPU that originally submitted the request. For some workloads
-this provides a significant reduction in CPU cycles due to caching effects.
+If this option is '1', the block layer will migrate request completions to the
+cpu "group" that originally submitted the request. For some workloads this
+provides a significant reduction in CPU cycles due to caching effects.
+
+For storage configurations that need to maximize distribution of completion
+processing setting this option to '2' forces the completion to run on the
+requesting cpu (bypassing the "group" aggregation logic).
scheduler (RW)
--------------
diff --git a/Documentation/block/switching-sched.txt b/Documentation/block/switching-sched.txt
index 71cfbdc..3b2612e 100644
--- a/Documentation/block/switching-sched.txt
+++ b/Documentation/block/switching-sched.txt
@@ -1,6 +1,6 @@
To choose IO schedulers at boot time, use the argument 'elevator=deadline'.
-'noop', 'as' and 'cfq' (the default) are also available. IO schedulers are
-assigned globally at boot time only presently.
+'noop' and 'cfq' (the default) are also available. IO schedulers are assigned
+globally at boot time only presently.
Each io queue has a set of io scheduler tunables associated with it. These
tunables control how the io scheduler works. You can find these entries
diff --git a/Documentation/blockdev/README.DAC960 b/Documentation/blockdev/README.DAC960
index 0e8f618..bd85fb9 100644
--- a/Documentation/blockdev/README.DAC960
+++ b/Documentation/blockdev/README.DAC960
@@ -214,7 +214,7 @@
make config
make bzImage (or zImage)
-Then install "arch/i386/boot/bzImage" or "arch/i386/boot/zImage" as your
+Then install "arch/x86/boot/bzImage" or "arch/x86/boot/zImage" as your
standard kernel, run lilo if appropriate, and reboot.
To create the necessary devices in /dev, the "make_rd" script included in
diff --git a/Documentation/blockdev/cciss.txt b/Documentation/blockdev/cciss.txt
index c00c6a5..b79d0a1 100644
--- a/Documentation/blockdev/cciss.txt
+++ b/Documentation/blockdev/cciss.txt
@@ -78,6 +78,16 @@
/dev/cciss/c1d1p2 Controller 1, disk 1, partition 2
/dev/cciss/c1d1p3 Controller 1, disk 1, partition 3
+CCISS simple mode support
+-------------------------
+
+The "cciss_simple_mode=1" boot parameter may be used to prevent the driver
+from putting the controller into "performant" mode. The difference is that
+with simple mode, each command completion requires an interrupt, while with
+"performant mode" (the default, and ordinarily better performing) it is
+possible to have multiple command completions indicated by a single
+interrupt.
+
SCSI tape drive and medium changer support
------------------------------------------
@@ -88,14 +98,12 @@
"SCSI support" in your kernel configuration to be able to use SCSI
tape drives with your Smart Array 5xxx controller.
-Additionally, note that the driver will not engage the SCSI core at init
-time. The driver must be directed to dynamically engage the SCSI core via
-the /proc filesystem entry which the "block" side of the driver creates as
-/proc/driver/cciss/cciss* at runtime. This is because at driver init time,
-the SCSI core may not yet be initialized (because the driver is a block
-driver) and attempting to register it with the SCSI core in such a case
-would cause a hang. This is best done via an initialization script
-(typically in /etc/init.d, but could vary depending on distribution).
+Additionally, note that the driver will engage the SCSI core at init
+time if any tape drives or medium changers are detected. The driver may
+also be directed to dynamically engage the SCSI core via the /proc filesystem
+entry which the "block" side of the driver creates as
+/proc/driver/cciss/cciss* at runtime. This is best done via a script.
+
For example:
for x in /proc/driver/cciss/cciss[0-9]*
diff --git a/Documentation/blockdev/ramdisk.txt b/Documentation/blockdev/ramdisk.txt
index 6c820ba..fa72e97 100644
--- a/Documentation/blockdev/ramdisk.txt
+++ b/Documentation/blockdev/ramdisk.txt
@@ -64,9 +64,9 @@
is not required. Bits 11 to 13 are not currently used and may as well be zero.
These numbers are no magical secrets, as seen below:
-./arch/i386/kernel/setup.c:#define RAMDISK_IMAGE_START_MASK 0x07FF
-./arch/i386/kernel/setup.c:#define RAMDISK_PROMPT_FLAG 0x8000
-./arch/i386/kernel/setup.c:#define RAMDISK_LOAD_FLAG 0x4000
+./arch/x86/kernel/setup.c:#define RAMDISK_IMAGE_START_MASK 0x07FF
+./arch/x86/kernel/setup.c:#define RAMDISK_PROMPT_FLAG 0x8000
+./arch/x86/kernel/setup.c:#define RAMDISK_LOAD_FLAG 0x4000
Consider a typical two floppy disk setup, where you will have the
kernel on disk one, and have already put a RAM disk image onto disk #2.
@@ -85,7 +85,7 @@
Putting that together gives 2^15 + 2^14 + 0 = 49152 for an rdev word.
So to create disk one of the set, you would do:
- /usr/src/linux# cat arch/i386/boot/zImage > /dev/fd0
+ /usr/src/linux# cat arch/x86/boot/zImage > /dev/fd0
/usr/src/linux# rdev /dev/fd0 /dev/fd0
/usr/src/linux# rdev -r /dev/fd0 49152
diff --git a/Documentation/bus-virt-phys-mapping.txt b/Documentation/bus-virt-phys-mapping.txt
index 1b5aa10..2bc55ff 100644
--- a/Documentation/bus-virt-phys-mapping.txt
+++ b/Documentation/bus-virt-phys-mapping.txt
@@ -1,6 +1,6 @@
[ NOTE: The virt_to_bus() and bus_to_virt() functions have been
superseded by the functionality provided by the PCI DMA interface
- (see Documentation/PCI/PCI-DMA-mapping.txt). They continue
+ (see Documentation/DMA-API-HOWTO.txt). They continue
to be documented below for historical purposes, but new code
must not use them. --davidm 00/12/12 ]
diff --git a/Documentation/cdrom/packet-writing.txt b/Documentation/cdrom/packet-writing.txt
index 13c251d..2834170 100644
--- a/Documentation/cdrom/packet-writing.txt
+++ b/Documentation/cdrom/packet-writing.txt
@@ -109,7 +109,7 @@
For a description of the sysfs interface look into the file:
- Documentation/ABI/testing/sysfs-block-pktcdvd
+ Documentation/ABI/testing/sysfs-class-pktcdvd
Using the pktcdvd debugfs interface
diff --git a/Documentation/cgroups/cgroups.txt b/Documentation/cgroups/cgroups.txt
index cd67e90..9c452ef 100644
--- a/Documentation/cgroups/cgroups.txt
+++ b/Documentation/cgroups/cgroups.txt
@@ -454,8 +454,8 @@
move it into a new cgroup (possibly the root cgroup) by writing to the
new cgroup's tasks file.
-Note: If the ns cgroup is active, moving a process to another cgroup can
-fail.
+Note: Due to some restrictions enforced by some cgroup subsystems, moving
+a process to another cgroup can fail.
2.3 Mounting hierarchies by name
--------------------------------
diff --git a/Documentation/cgroups/freezer-subsystem.txt b/Documentation/cgroups/freezer-subsystem.txt
index c21d777..7e62de1 100644
--- a/Documentation/cgroups/freezer-subsystem.txt
+++ b/Documentation/cgroups/freezer-subsystem.txt
@@ -33,9 +33,9 @@
From a second, unrelated bash shell:
$ kill -SIGSTOP 16690
- $ kill -SIGCONT 16990
+ $ kill -SIGCONT 16690
- <at this point 16990 exits and causes 16644 to exit too>
+ <at this point 16690 exits and causes 16644 to exit too>
This happens because bash can observe both signals and choose how it
responds to them.
diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
index 06eb6d9..cc0ebc5 100644
--- a/Documentation/cgroups/memory.txt
+++ b/Documentation/cgroups/memory.txt
@@ -418,7 +418,6 @@
# The following additional stats are dependent on CONFIG_DEBUG_VM.
-inactive_ratio - VM internal parameter. (see mm/page_alloc.c)
recent_rotated_anon - VM internal parameter. (see mm/vmscan.c)
recent_rotated_file - VM internal parameter. (see mm/vmscan.c)
recent_scanned_anon - VM internal parameter. (see mm/vmscan.c)
diff --git a/Documentation/cpu-freq/cpu-drivers.txt b/Documentation/cpu-freq/cpu-drivers.txt
index 6c30e93..c436096 100644
--- a/Documentation/cpu-freq/cpu-drivers.txt
+++ b/Documentation/cpu-freq/cpu-drivers.txt
@@ -168,7 +168,7 @@
to policy->max, and -if supported- select a performance-oriented
setting when policy->policy is CPUFREQ_POLICY_PERFORMANCE, and a
powersaving-oriented setting when CPUFREQ_POLICY_POWERSAVE. Also check
-the reference implementation in arch/i386/kernel/cpu/cpufreq/longrun.c
+the reference implementation in drivers/cpufreq/longrun.c
diff --git a/Documentation/cpu-freq/governors.txt b/Documentation/cpu-freq/governors.txt
index e74d0a2..d221781 100644
--- a/Documentation/cpu-freq/governors.txt
+++ b/Documentation/cpu-freq/governors.txt
@@ -132,7 +132,7 @@
transition_latency * 100
Or by kernel restrictions:
If CONFIG_NO_HZ is set, the limit is 10ms fixed.
-If CONFIG_NO_HZ is not set or no_hz=off boot parameter is used, the
+If CONFIG_NO_HZ is not set or nohz=off boot parameter is used, the
limits depend on the CONFIG_HZ option:
HZ=1000: min=20000us (20ms)
HZ=250: min=80000us (80ms)
diff --git a/Documentation/development-process/4.Coding b/Documentation/development-process/4.Coding
index 83f5f5b..e3cb6a5 100644
--- a/Documentation/development-process/4.Coding
+++ b/Documentation/development-process/4.Coding
@@ -278,7 +278,7 @@
fail; these failures can be restricted to a specific range of code.
Running with fault injection enabled allows the programmer to see how the
code responds when things go badly. See
-Documentation/fault-injection/fault-injection.text for more information on
+Documentation/fault-injection/fault-injection.txt for more information on
how to use this facility.
Other kinds of errors can be found with the "sparse" static analysis tool.
diff --git a/Documentation/device-mapper/dm-crypt.txt b/Documentation/device-mapper/dm-crypt.txt
index 6b5c42d..2c656ae 100644
--- a/Documentation/device-mapper/dm-crypt.txt
+++ b/Documentation/device-mapper/dm-crypt.txt
@@ -4,7 +4,8 @@
Device-Mapper's "crypt" target provides transparent encryption of block devices
using the kernel crypto API.
-Parameters: <cipher> <key> <iv_offset> <device path> <offset>
+Parameters: <cipher> <key> <iv_offset> <device path> \
+ <offset> [<#opt_params> <opt_params>]
<cipher>
Encryption cipher and an optional IV generation mode.
@@ -37,6 +38,24 @@
<offset>
Starting sector within the device where the encrypted data begins.
+<#opt_params>
+ Number of optional parameters. If there are no optional parameters,
+ the optional paramaters section can be skipped or #opt_params can be zero.
+ Otherwise #opt_params is the number of following arguments.
+
+ Example of optional parameters section:
+ 1 allow_discards
+
+allow_discards
+ Block discard requests (a.k.a. TRIM) are passed through the crypt device.
+ The default is to ignore discard requests.
+
+ WARNING: Assess the specific security risks carefully before enabling this
+ option. For example, allowing discards on encrypted devices may lead to
+ the leak of information about the ciphertext device (filesystem type,
+ used space etc.) if the discarded blocks can be located easily on the
+ device later.
+
Example scripts
===============
LUKS (Linux Unified Key Setup) is now the preferred way to set up disk
diff --git a/Documentation/device-mapper/dm-flakey.txt b/Documentation/device-mapper/dm-flakey.txt
index c8efdfd..6ff5c23 100644
--- a/Documentation/device-mapper/dm-flakey.txt
+++ b/Documentation/device-mapper/dm-flakey.txt
@@ -1,17 +1,53 @@
dm-flakey
=========
-This target is the same as the linear target except that it returns I/O
-errors periodically. It's been found useful in simulating failing
-devices for testing purposes.
+This target is the same as the linear target except that it exhibits
+unreliable behaviour periodically. It's been found useful in simulating
+failing devices for testing purposes.
Starting from the time the table is loaded, the device is available for
-<up interval> seconds, then returns errors for <down interval> seconds,
-and then this cycle repeats.
+<up interval> seconds, then exhibits unreliable behaviour for <down
+interval> seconds, and then this cycle repeats.
-Parameters: <dev path> <offset> <up interval> <down interval>
+Also, consider using this in combination with the dm-delay target too,
+which can delay reads and writes and/or send them to different
+underlying devices.
+
+Table parameters
+----------------
+ <dev path> <offset> <up interval> <down interval> \
+ [<num_features> [<feature arguments>]]
+
+Mandatory parameters:
<dev path>: Full pathname to the underlying block-device, or a
"major:minor" device-number.
<offset>: Starting sector within the device.
<up interval>: Number of seconds device is available.
<down interval>: Number of seconds device returns errors.
+
+Optional feature parameters:
+ If no feature parameters are present, during the periods of
+ unreliability, all I/O returns errors.
+
+ drop_writes:
+ All write I/O is silently ignored.
+ Read I/O is handled correctly.
+
+ corrupt_bio_byte <Nth_byte> <direction> <value> <flags>:
+ During <down interval>, replace <Nth_byte> of the data of
+ each matching bio with <value>.
+
+ <Nth_byte>: The offset of the byte to replace.
+ Counting starts at 1, to replace the first byte.
+ <direction>: Either 'r' to corrupt reads or 'w' to corrupt writes.
+ 'w' is incompatible with drop_writes.
+ <value>: The value (from 0-255) to write.
+ <flags>: Perform the replacement only if bio->bi_rw has all the
+ selected flags set.
+
+Examples:
+ corrupt_bio_byte 32 r 1 0
+ - replaces the 32nd byte of READ bios with the value 1
+
+ corrupt_bio_byte 224 w 0 32
+ - replaces the 224th byte of REQ_META (=32) bios with the value 0
diff --git a/Documentation/device-mapper/dm-log.txt b/Documentation/device-mapper/dm-log.txt
index 994dd75..c155ac5 100644
--- a/Documentation/device-mapper/dm-log.txt
+++ b/Documentation/device-mapper/dm-log.txt
@@ -48,7 +48,7 @@
communication.
There are currently two userspace log implementations that leverage this
-framework - "clustered_disk" and "clustered_core". These implementations
+framework - "clustered-disk" and "clustered-core". These implementations
provide a cluster-coherent log for shared-storage. Device-mapper mirroring
can be used in a shared-storage environment when the cluster log implementations
are employed.
diff --git a/Documentation/device-mapper/dm-raid.txt b/Documentation/device-mapper/dm-raid.txt
index 33b6b70..2a8c113 100644
--- a/Documentation/device-mapper/dm-raid.txt
+++ b/Documentation/device-mapper/dm-raid.txt
@@ -1,70 +1,108 @@
-Device-mapper RAID (dm-raid) is a bridge from DM to MD. It
-provides a way to use device-mapper interfaces to access the MD RAID
-drivers.
+dm-raid
+-------
-As with all device-mapper targets, the nominal public interfaces are the
-constructor (CTR) tables and the status outputs (both STATUSTYPE_INFO
-and STATUSTYPE_TABLE). The CTR table looks like the following:
+The device-mapper RAID (dm-raid) target provides a bridge from DM to MD.
+It allows the MD RAID drivers to be accessed using a device-mapper
+interface.
-1: <s> <l> raid \
-2: <raid_type> <#raid_params> <raid_params> \
-3: <#raid_devs> <meta_dev1> <dev1> .. <meta_devN> <devN>
+The target is named "raid" and it accepts the following parameters:
-Line 1 contains the standard first three arguments to any device-mapper
-target - the start, length, and target type fields. The target type in
-this case is "raid".
+ <raid_type> <#raid_params> <raid_params> \
+ <#raid_devs> <metadata_dev0> <dev0> [.. <metadata_devN> <devN>]
-Line 2 contains the arguments that define the particular raid
-type/personality/level, the required arguments for that raid type, and
-any optional arguments. Possible raid types include: raid4, raid5_la,
-raid5_ls, raid5_rs, raid6_zr, raid6_nr, and raid6_nc. (raid1 is
-planned for the future.) The list of required and optional parameters
-is the same for all the current raid types. The required parameters are
-positional, while the optional parameters are given as key/value pairs.
-The possible parameters are as follows:
- <chunk_size> Chunk size in sectors.
- [[no]sync] Force/Prevent RAID initialization
- [rebuild <idx>] Rebuild the drive indicated by the index
- [daemon_sleep <ms>] Time between bitmap daemon work to clear bits
- [min_recovery_rate <kB/sec/disk>] Throttle RAID initialization
- [max_recovery_rate <kB/sec/disk>] Throttle RAID initialization
- [max_write_behind <sectors>] See '-write-behind=' (man mdadm)
- [stripe_cache <sectors>] Stripe cache size for higher RAIDs
+<raid_type>:
+ raid1 RAID1 mirroring
+ raid4 RAID4 dedicated parity disk
+ raid5_la RAID5 left asymmetric
+ - rotating parity 0 with data continuation
+ raid5_ra RAID5 right asymmetric
+ - rotating parity N with data continuation
+ raid5_ls RAID5 left symmetric
+ - rotating parity 0 with data restart
+ raid5_rs RAID5 right symmetric
+ - rotating parity N with data restart
+ raid6_zr RAID6 zero restart
+ - rotating parity zero (left-to-right) with data restart
+ raid6_nr RAID6 N restart
+ - rotating parity N (right-to-left) with data restart
+ raid6_nc RAID6 N continue
+ - rotating parity N (right-to-left) with data continuation
-Line 3 contains the list of devices that compose the array in
-metadata/data device pairs. If the metadata is stored separately, a '-'
-is given for the metadata device position. If a drive has failed or is
-missing at creation time, a '-' can be given for both the metadata and
-data drives for a given position.
+ Refererence: Chapter 4 of
+ http://www.snia.org/sites/default/files/SNIA_DDF_Technical_Position_v2.0.pdf
-NB. Currently all metadata devices must be specified as '-'.
+<#raid_params>: The number of parameters that follow.
-Examples:
-# RAID4 - 4 data drives, 1 parity
+<raid_params> consists of
+ Mandatory parameters:
+ <chunk_size>: Chunk size in sectors. This parameter is often known as
+ "stripe size". It is the only mandatory parameter and
+ is placed first.
+
+ followed by optional parameters (in any order):
+ [sync|nosync] Force or prevent RAID initialization.
+
+ [rebuild <idx>] Rebuild drive number idx (first drive is 0).
+
+ [daemon_sleep <ms>]
+ Interval between runs of the bitmap daemon that
+ clear bits. A longer interval means less bitmap I/O but
+ resyncing after a failure is likely to take longer.
+
+ [min_recovery_rate <kB/sec/disk>] Throttle RAID initialization
+ [max_recovery_rate <kB/sec/disk>] Throttle RAID initialization
+ [write_mostly <idx>] Drive index is write-mostly
+ [max_write_behind <sectors>] See '-write-behind=' (man mdadm)
+ [stripe_cache <sectors>] Stripe cache size (higher RAIDs only)
+ [region_size <sectors>]
+ The region_size multiplied by the number of regions is the
+ logical size of the array. The bitmap records the device
+ synchronisation state for each region.
+
+<#raid_devs>: The number of devices composing the array.
+ Each device consists of two entries. The first is the device
+ containing the metadata (if any); the second is the one containing the
+ data.
+
+ If a drive has failed or is missing at creation time, a '-' can be
