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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2007-06-04 11:55:36 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-06-08 15:21:15 +0400 |
| commit | b6cfe6af6bfb101212b217cba55012d1d35ab3a8 (patch) | |
| tree | 296808730368f11291635b0d8dbd7b550f6ce55e /include/linux/videodev2.h | |
| parent | 987e00ba5cf667beed2b88bd1d01150334cdb6dc (diff) | |
| download | linux-b6cfe6af6bfb101212b217cba55012d1d35ab3a8.tar.xz | |
V4L/DVB (5736): Add V4L2_FBUF_CAP/FLAG_LOCAL/GLOBAL_INV_ALPHA
Michael Schimek requested the addition of inverted alpha framebuffer
caps/flags to support such hardware.
'Normal' alpha uses this formula to mix the framebuffer and video:
output = fb pixel * fb alpha + video pixel * (1 - fb alpha)
and the 'inverted' alpha uses this formula:
output = fb pixel * (1 - fb alpha) + video pixel * fb alpha
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'include/linux/videodev2.h')
| -rw-r--r-- | include/linux/videodev2.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index 93971bb294e0..d16a2b57dc81 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -615,12 +615,16 @@ struct v4l2_framebuffer #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_GLOBAL_INV_ALPHA 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_GLOBAL_INV_ALPHA 0x0040 struct v4l2_clip { |