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[media] vivid: Fix YUV555 and YUV565 handling

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precalculate_color() had a optimization that avoided duplicated
conversion for YUV formats. This optimization did not take into
consideration YUV444, YUV555, YUV565 or limited range quantization.

This patch keeps the optimization, but fixes the wrong handling.

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 06:26:23 -03:00 committed by Mauro Carvalho Chehab
parent ca2b32da59
commit 7a20f3985f
1 changed files with 8 additions and 11 deletions
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19
drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
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@ -795,6 +795,8 @@ static void precalculate_color(struct tpg_data *tpg, int k)
int r = tpg_colors[col].r;
int g = tpg_colors[col].g;
int b = tpg_colors[col].b;
int y, cb, cr;
bool ycbcr_valid = false;
if (k == TPG_COLOR_TEXTBG) {
col = tpg_get_textbg_color(tpg);
@ -871,7 +873,6 @@ static void precalculate_color(struct tpg_data *tpg, int k)
tpg->saturation != 128 || tpg->hue) &&
tpg->color_enc != TGP_COLOR_ENC_LUMA) {
/* Implement these operations */
int y, cb, cr;
int tmp_cb, tmp_cr;
/* First convert to YCbCr */
@ -888,13 +889,10 @@ static void precalculate_color(struct tpg_data *tpg, int k)
cb = (128 << 4) + (tmp_cb * tpg->contrast * tpg->saturation) / (128 * 128);
cr = (128 << 4) + (tmp_cr * tpg->contrast * tpg->saturation) / (128 * 128);
if (tpg->color_enc == TGP_COLOR_ENC_YCBCR) {
tpg->colors[k][0] = clamp(y >> 4, 1, 254);
tpg->colors[k][1] = clamp(cb >> 4, 1, 254);
tpg->colors[k][2] = clamp(cr >> 4, 1, 254);
return;
}
ycbcr_to_color(tpg, y, cb, cr, &r, &g, &b);
if (tpg->color_enc == TGP_COLOR_ENC_YCBCR)
ycbcr_valid = true;
else
ycbcr_to_color(tpg, y, cb, cr, &r, &g, &b);
} else if ((tpg->brightness != 128 || tpg->contrast != 128) &&
tpg->color_enc == TGP_COLOR_ENC_LUMA) {
r = (16 << 4) + ((r - (16 << 4)) * tpg->contrast) / 128;
@ -915,9 +913,8 @@ static void precalculate_color(struct tpg_data *tpg, int k)
case TGP_COLOR_ENC_YCBCR:
{
/* Convert to YCbCr */
int y, cb, cr;
color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr);
if (!ycbcr_valid)
color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr);
if (tpg->real_quantization == V4L2_QUANTIZATION_LIM_RANGE) {
y = clamp(y, 16 << 4, 235 << 4);