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[media] v4l: Add new alpha component control

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The V4L2_CID_ALPHA_COMPONENT control is intended for the video capture
or memory-to-memory devices that are capable of setting up the per-pixel
alpha component to some arbitrary value. It allows to set the alpha
component for all pixels to an arbitrary value.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sylwester Nawrocki
2011-11-14 08:48:18 -03:00
committed by Mauro Carvalho Chehab
parent b4d48c942c
commit cc1d327232
5 changed files with 39 additions and 11 deletions
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6
include/linux/videodev2.h
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@@ -1204,10 +1204,10 @@ enum v4l2_colorfx {
#define V4L2_CID_MIN_BUFFERS_FOR_CAPTURE (V4L2_CID_BASE+39)
#define V4L2_CID_MIN_BUFFERS_FOR_OUTPUT (V4L2_CID_BASE+40)
/* last CID + 1 */
#define V4L2_CID_LASTP1 (V4L2_CID_BASE+41)
#define V4L2_CID_ALPHA_COMPONENT (V4L2_CID_BASE+41)
/* Minimum number of buffer neede by the device */
/* last CID + 1 */
#define V4L2_CID_LASTP1 (V4L2_CID_BASE+42)
/* MPEG-class control IDs defined by V4L2 */
#define V4L2_CID_MPEG_BASE (V4L2_CTRL_CLASS_MPEG | 0x900)