From: Hans Verkuil Date: Mon, 4 Jun 2007 07:55:36 +0000 (-0300) Subject: V4L/DVB (5736): Add V4L2_FBUF_CAP/FLAG_LOCAL/GLOBAL_INV_ALPHA X-Git-Tag: v2.6.22-rc5~53^2~3 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b6cfe6af6bfb101212b217cba55012d1d35ab3a8;p=linux-2.6 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 Signed-off-by: Mauro Carvalho Chehab --- diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index 93971bb294..d16a2b57dc 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 {