From: Hans Verkuil <hans.verk...@cisco.com>
The grayscale values are still full range sRGB, so don't add the
limited range offset.
Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
---
drivers/media/platform/vivid/vivid-tpg.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/vivid/vivid-tpg.c
b/drivers/media/platform/vivid/vivid-tpg.c
index e2af384..c1476a2 100644
--- a/drivers/media/platform/vivid/vivid-tpg.c
+++ b/drivers/media/platform/vivid/vivid-tpg.c
@@ -530,7 +530,7 @@ static void precalculate_color(struct tpg_data *tpg, int k)
if (tpg->qual == TPG_QUAL_GRAY) {
/* Rec. 709 Luma function */
/* (0.2126, 0.7152, 0.0722) * (255 * 256) */
- r = g = b = ((13879 * r + 46688 * g + 4713 * b) >> 16) + (16 <<
4);
+ r = g = b = (13879 * r + 46688 * g + 4713 * b) >> 16;
}
/*
--
2.1.4
--
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