patches.renesas/0158-media-videodev2.h-Add-HSV-encoding.patch

From f4b4deb8ecebeb058629d1c33c0121860002da2a Mon Sep 17 00:00:00 2001
From: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Date: Mon, 22 Aug 2016 06:28:07 -0300
Subject: [PATCH 158/299] [media] videodev2.h Add HSV encoding

Some hardware maps the Hue between 0 and 255 instead of 0-179. Support
this format with a new field hsv_enc.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit 8a0d62af93026de424d75906e3651ba653197668)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 include/uapi/linux/videodev2.h |   32 +++++++++++++++++++++++++++-----
 1 file changed, 27 insertions(+), 5 deletions(-)

--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -335,6 +335,19 @@ enum v4l2_ycbcr_encoding {
 };
 
 /*
+ * enum v4l2_hsv_encoding values should not collide with the ones from
+ * enum v4l2_ycbcr_encoding.
+ */
+enum v4l2_hsv_encoding {
+
+	/* Hue mapped to 0 - 179 */
+	V4L2_HSV_ENC_180		= 128,
+
+	/* Hue mapped to 0-255 */
+	V4L2_HSV_ENC_256		= 129,
+};
+
+/*
  * Determine how YCBCR_ENC_DEFAULT should map to a proper Y'CbCr encoding.
  * This depends on the colorspace.
  */
@@ -362,9 +375,10 @@ enum v4l2_quantization {
  * This depends on whether the image is RGB or not, the colorspace and the
  * Y'CbCr encoding.
  */
-#define V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb, colsp, ycbcr_enc) \
-	(((is_rgb) && (colsp) == V4L2_COLORSPACE_BT2020) ? V4L2_QUANTIZATION_LIM_RANGE : \
-	 (((is_rgb) || (ycbcr_enc) == V4L2_YCBCR_ENC_XV601 || \
+#define V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb_or_hsv, colsp, ycbcr_enc) \
+	(((is_rgb_or_hsv) && (colsp) == V4L2_COLORSPACE_BT2020) ? \
+	 V4L2_QUANTIZATION_LIM_RANGE : \
+	 (((is_rgb_or_hsv) || (ycbcr_enc) == V4L2_YCBCR_ENC_XV601 || \
 	  (ycbcr_enc) == V4L2_YCBCR_ENC_XV709 || (colsp) == V4L2_COLORSPACE_JPEG) ? \
 	 V4L2_QUANTIZATION_FULL_RANGE : V4L2_QUANTIZATION_LIM_RANGE))
 
@@ -461,7 +475,12 @@ struct v4l2_pix_format {
 	__u32			colorspace;	/* enum v4l2_colorspace */
 	__u32			priv;		/* private data, depends on pixelformat */
 	__u32			flags;		/* format flags (V4L2_PIX_FMT_FLAG_*) */
-	__u32			ycbcr_enc;	/* enum v4l2_ycbcr_encoding */
+	union {
+		/* enum v4l2_ycbcr_encoding */
+		__u32			ycbcr_enc;
+		/* enum v4l2_hsv_encoding */
+		__u32			hsv_enc;
+	};
 	__u32			quantization;	/* enum v4l2_quantization */
 	__u32			xfer_func;	/* enum v4l2_xfer_func */
 };
@@ -2009,7 +2028,10 @@ struct v4l2_pix_format_mplane {
 	struct v4l2_plane_pix_format	plane_fmt[VIDEO_MAX_PLANES];
 	__u8				num_planes;
 	__u8				flags;
-	__u8				ycbcr_enc;
+	 union {
+		__u8				ycbcr_enc;
+		__u8				hsv_enc;
+	};
 	__u8				quantization;
 	__u8				xfer_func;
 	__u8				reserved[7];