diff options
Diffstat (limited to 'drivers/media/common/v4l2-tpg/v4l2-tpg-core.c')
| -rw-r--r-- | drivers/media/common/v4l2-tpg/v4l2-tpg-core.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c index e47b46e..3dd22da 100644 --- a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c +++ b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c @@ -927,7 +927,14 @@ static void precalculate_color(struct tpg_data *tpg, int k) y >>= 4; cb >>= 4; cr >>= 4; - if (tpg->real_quantization == V4L2_QUANTIZATION_LIM_RANGE) { + /* + * XV601/709 use the header/footer margins to encode R', G' + * and B' values outside the range [0-1]. So do not clamp + * XV601/709 values. + */ + if (tpg->real_quantization == V4L2_QUANTIZATION_LIM_RANGE && + tpg->real_ycbcr_enc != V4L2_YCBCR_ENC_XV601 && + tpg->real_ycbcr_enc != V4L2_YCBCR_ENC_XV709) { y = clamp(y, 16, 235); cb = clamp(cb, 16, 240); cr = clamp(cr, 16, 240); |
