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authorHans Verkuil <hverkuil@xs4all.nl>2007-06-04 04:55:36 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2007-06-08 08:21:15 -0300
commitb6cfe6af6bfb101212b217cba55012d1d35ab3a8 (patch)
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parent987e00ba5cf667beed2b88bd1d01150334cdb6dc (diff)
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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>
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