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[media] vivid-tpg: add support for V4L2_PIX_FMT_GREY 

Add monochrome support to the TPG.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Hans Verkuil 2015-03-07 14:57:50 -03:00 committed by Mauro Carvalho Chehab
parent 68c90d6496
commit 51f3096835
1 changed files with 8 additions and 1 deletions
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9
drivers/media/platform/vivid/vivid-tpg.c
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@ -199,6 +199,7 @@ bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc)
case V4L2_PIX_FMT_XBGR32:
case V4L2_PIX_FMT_ARGB32:
case V4L2_PIX_FMT_ABGR32:
case V4L2_PIX_FMT_GREY:
tpg->is_yuv = false;
break;
case V4L2_PIX_FMT_YUV420M:
@ -279,6 +280,9 @@ bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc)
case V4L2_PIX_FMT_ABGR32:
tpg->twopixelsize[0] = 2 * 4;
break;
case V4L2_PIX_FMT_GREY:
tpg->twopixelsize[0] = 2;
break;
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV21:
case V4L2_PIX_FMT_NV12M:
@ -598,7 +602,7 @@ static void precalculate_color(struct tpg_data *tpg, int k)
g <<= 4;
b <<= 4;
}
if (tpg->qual == TPG_QUAL_GRAY) {
if (tpg->qual == TPG_QUAL_GRAY || tpg->fourcc == V4L2_PIX_FMT_GREY) {
/* Rec. 709 Luma function */
/* (0.2126, 0.7152, 0.0722) * (255 * 256) */
r = g = b = (13879 * r + 46688 * g + 4713 * b) >> 16;
@ -739,6 +743,9 @@ static void gen_twopix(struct tpg_data *tpg,
b_v = tpg->colors[color][2]; /* B or precalculated V */
switch (tpg->fourcc) {
case V4L2_PIX_FMT_GREY:
buf[0][offset] = r_y;
break;
case V4L2_PIX_FMT_YUV422P:
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_YUV420M: