| /* (C) 1999-2003 Nemosoft Unv. (webcam@smcc.demon.nl) |
| |
| 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. |
| |
| You should have received a copy of the GNU 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 |
| */ |
| |
| /* This file is the bridge between the kernel module and the plugin; it |
| describes the structures and datatypes used in both modules. Any |
| significant change should be reflected by increasing the |
| pwc_decompressor_version major number. |
| */ |
| #ifndef PWC_UNCOMPRESS_H |
| #define PWC_UNCOMPRESS_H |
| |
| #include <linux/config.h> |
| #include <linux/list.h> |
| |
| #include "pwc.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* The decompressor structure. |
| Every type of decompressor registers itself with the main module. |
| When a device is opened, it looks up the correct compressor, and |
| uses that when a compressed video mode is requested. |
| */ |
| struct pwc_decompressor |
| { |
| int type; /* type of camera (645, 680, etc) */ |
| int table_size; /* memory needed */ |
| |
| void (* init)(int release, void *buffer, void *table); /* Initialization routine; should be called after each set_video_mode */ |
| void (* exit)(void); /* Cleanup routine */ |
| void (* decompress)(struct pwc_coord *image, struct pwc_coord *view, struct pwc_coord *offset, |
| void *src, void *dst, int planar, |
| void *table, int bandlength); |
| void (* lock)(void); /* make sure module cannot be unloaded */ |
| void (* unlock)(void); /* release lock on module */ |
| |
| struct list_head pwcd_list; |
| }; |
| |
| |
| /* Our structure version number. Is set to the version number major */ |
| extern const int pwc_decompressor_version; |
| |
| /* Adds decompressor to list, based on its 'type' field (which matches the 'type' field in pwc_device; ignores any double requests */ |
| extern void pwc_register_decompressor(struct pwc_decompressor *pwcd); |
| /* Removes decompressor, based on the type number */ |
| extern void pwc_unregister_decompressor(int type); |
| /* Returns pointer to decompressor struct, or NULL if it doesn't exist */ |
| extern struct pwc_decompressor *pwc_find_decompressor(int type); |
| |
| #ifdef CONFIG_USB_PWCX |
| /* If the decompressor is compiled in, we must call these manually */ |
| extern int usb_pwcx_init(void); |
| extern void usb_pwcx_exit(void); |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |