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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2007-06-04 09:55:36 +0200 |
|---|---|---|
| committer | Hans Verkuil <hverkuil@xs4all.nl> | 2007-06-04 09:55:36 +0200 |
| commit | e36359f5879610745dfad30cc8d2a03554b82b74 (patch) | |
| tree | a062778b831499e5c5629201fe1115ac4b7d0730 /linux | |
| parent | 64ef6853d9cf35dbd0239ece3502f782056d7d6d (diff) | |
| download | mediapointer-dvb-s2-e36359f5879610745dfad30cc8d2a03554b82b74.tar.gz mediapointer-dvb-s2-e36359f5879610745dfad30cc8d2a03554b82b74.tar.bz2 | |
Add V4L2_FBUF_CAP/FLAG_LOCAL/GLOBAL_INV_ALPHA
From: Hans Verkuil <hverkuil@xs4all.nl>
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>
Diffstat (limited to 'linux')
| -rw-r--r-- | linux/include/linux/videodev2.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/linux/include/linux/videodev2.h b/linux/include/linux/videodev2.h index c316693ec..dc4fb4588 100644 --- a/linux/include/linux/videodev2.h +++ b/linux/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 { |