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[media] vivid: Local optimization

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Avoid duplicated clamps when possible.

Suggested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Ricardo Ribalda Delgado 2016-07-16 06:34:19 -03:00 committed by Mauro Carvalho Chehab
parent 7a20f3985f
commit f1eb926d1d
1 changed files with 10 additions and 6 deletions
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16
drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
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@ -916,14 +916,18 @@ static void precalculate_color(struct tpg_data *tpg, int k)
if (!ycbcr_valid)
color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr);
y >>= 4;
cb >>= 4;
cr >>= 4;
if (tpg->real_quantization == V4L2_QUANTIZATION_LIM_RANGE) {
y = clamp(y, 16 << 4, 235 << 4);
cb = clamp(cb, 16 << 4, 240 << 4);
cr = clamp(cr, 16 << 4, 240 << 4);
y = clamp(y, 16, 235);
cb = clamp(cb, 16, 240);
cr = clamp(cr, 16, 240);
} else {
y = clamp(y, 1, 254);
cb = clamp(cb, 1, 254);
cr = clamp(cr, 1, 254);
}
y = clamp(y >> 4, 1, 254);
cb = clamp(cb >> 4, 1, 254);
cr = clamp(cr >> 4, 1, 254);
switch (tpg->fourcc) {
case V4L2_PIX_FMT_YUV444:
y >>= 4;