Messages in this thread Patch in this message | | | From | Ricardo Ribalda Delgado <> | Subject | [PATCH v3 8/9] [media] vivid: Fix YUV555 and YUV565 handling | Date | Sat, 16 Jul 2016 12:41:55 +0200 |
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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> --- drivers/media/common/v4l2-tpg/v4l2-tpg-core.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c index e91bf3cbaab9..1c862465e335 100644 --- a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c +++ b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c @@ -797,6 +797,8 @@ 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 ycbbr_valid = false; if (k == TPG_COLOR_TEXTBG) { col = tpg_get_textbg_color(tpg); @@ -873,7 +875,6 @@ 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 */ @@ -890,13 +891,10 @@ 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_YUV) { - 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_YUV) + ycbbr_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; @@ -917,9 +915,8 @@ static void precalculate_color(struct tpg_data *tpg, int k) case TGP_COLOR_ENC_YUV: { /* Convert to YCbCr */ - int y, cb, cr; - - color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr); + if (!ycbbr_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); -- 2.8.1
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