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authorHans Verkuil <hverkuil@xs4all.nl>2007-06-04 11:55:36 +0400
committerMauro Carvalho Chehab <mchehab@infradead.org>2007-06-08 15:21:15 +0400
commitb6cfe6af6bfb101212b217cba55012d1d35ab3a8 (patch)
tree296808730368f11291635b0d8dbd7b550f6ce55e /include/linux/videodev2.h
parent987e00ba5cf667beed2b88bd1d01150334cdb6dc (diff)
downloadlinux-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.h4
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
{