diff options
| author |   Hans Verkuil <hverkuil@xs4all.nl> | 2015-06-05 03:45:38 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-06-06 07:34:52 -0300 |
| commit | afeef4ee23b4865d6c3bf294b5ac9d55dbff5b82 (patch) | |
| tree | 57faa559191a8c0823b4a30ba07f8c67b31102e1 /drivers/media/platform | |
| parent | [media] radio-si470x-i2c: Pass the IRQF_ONESHOT flag (diff) | |
| download | linux-dev-afeef4ee23b4865d6c3bf294b5ac9d55dbff5b82.tar.xz linux-dev-afeef4ee23b4865d6c3bf294b5ac9d55dbff5b82.zip | |
[media] vivid-tpg: improve Y16 color setup
Currently the colors for the Y16 and Y16_BE pixelformats are in the range
0x0000-0xff00. So pure white (0xffff) is never created.
Improve this by making white really white. For other colors the lsb remains 0
so vivid can be used to detect endian problems.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Ricardo Ribalda <ricardo.ribalda@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/platform')
| -rw-r--r-- | drivers/media/platform/vivid/vivid-tpg.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/media/platform/vivid/vivid-tpg.c b/drivers/media/platform/vivid/vivid-tpg.c index 32ebf0d90d10..1458c7955547 100644 --- a/drivers/media/platform/vivid/vivid-tpg.c +++ b/drivers/media/platform/vivid/vivid-tpg.c @@ -900,12 +900,19 @@ static void gen_twopix(struct tpg_data *tpg, buf[0][offset] = r_y; break; case V4L2_PIX_FMT_Y16: - buf[0][offset] = 0; + /* + * Ideally both bytes should be set to r_y, but then you won't + * be able to detect endian problems. So keep it 0 except for + * the corner case where r_y is 0xff so white really will be + * white (0xffff). + */ + buf[0][offset] = r_y == 0xff ? r_y : 0; buf[0][offset+1] = r_y; break; case V4L2_PIX_FMT_Y16_BE: + /* See comment for V4L2_PIX_FMT_Y16 above */ buf[0][offset] = r_y; - buf[0][offset+1] = 0; + buf[0][offset+1] = r_y == 0xff ? r_y : 0; break; case V4L2_PIX_FMT_YUV422P: case V4L2_PIX_FMT_YUV420: |