ffmpeg | branch: release/2.8 | Michael Niedermayer <mich...@niedermayer.cc> | 
Tue May 21 01:35:08 2024 +0200| [ec2d476bb04bdce8a75c433d74819773450d6f8c] | 
committer: Michael Niedermayer

swscale/yuv2rgb: Use 64bit for brightness computation

This will not overflow for normal values
Fixes: CID1500280 Unintentional integer overflow

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
(cherry picked from commit bfc22f364d31d8f2dc2acae1bd03d5894a00b8c5)
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ec2d476bb04bdce8a75c433d74819773450d6f8c
---

 libswscale/yuv2rgb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libswscale/yuv2rgb.c b/libswscale/yuv2rgb.c
index ba8fd7b64b..c7bad9962c 100644
--- a/libswscale/yuv2rgb.c
+++ b/libswscale/yuv2rgb.c
@@ -803,7 +803,7 @@ av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const 
int inv_table[4],
     cbu  = (cbu * contrast * saturation) >> 32;
     cgu  = (cgu * contrast * saturation) >> 32;
     cgv  = (cgv * contrast * saturation) >> 32;
-    oy  -= 256 * brightness;
+    oy  -= 256LL * brightness;
 
     c->uOffset = 0x0400040004000400LL;
     c->vOffset = 0x0400040004000400LL;

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