From e1b0019568430ee80c3bb474829897700ef31f1c Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Fri, 29 May 2015 12:06:51 +0200
Subject: [PATCH] avformat/mov: Avoid float usage in yuv_to_rgba()
This avoids the possibility for rounding/precision differences between platforms
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavformat/mov.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/libavformat/mov.c b/libavformat/mov.c
index 51cdd21abd3..60729343dd2 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -1711,9 +1711,9 @@ static uint32_t yuv_to_rgba(uint32_t ycbcr)
cr = (ycbcr >> 8) & 0xFF;
cb = ycbcr & 0xFF;
- b = av_clip_uint8(1.164 * (y - 16) + 2.018 * (cb - 128));
- g = av_clip_uint8(1.164 * (y - 16) - 0.813 * (cr - 128) - 0.391 * (cb - 128));
- r = av_clip_uint8(1.164 * (y - 16) + 1.596 * (cr - 128));
+ b = av_clip_uint8((1164 * (y - 16) + 2018 * (cb - 128)) / 1000);
+ g = av_clip_uint8((1164 * (y - 16) - 813 * (cr - 128) - 391 * (cb - 128)) / 1000);
+ r = av_clip_uint8((1164 * (y - 16) + 1596 * (cr - 128) ) / 1000);
return (r << 16) | (g << 8) | b;
}
--
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