From d0a3bc13025baab8d48cbcf4c698daf2f0c44adc Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Thu, 17 Oct 2013 13:39:28 +0200
Subject: [PATCH] swscale/yuv2rgb: clip cy, avoid division by 0 with 0 contrast
Found-by: durandal_1707
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libswscale/yuv2rgb.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/libswscale/yuv2rgb.c b/libswscale/yuv2rgb.c
index c0263cdfb5a..77c56a97722 100644
--- a/libswscale/yuv2rgb.c
+++ b/libswscale/yuv2rgb.c
@@ -768,10 +768,10 @@ av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
c->yuv2rgb_u2b_coeff = (int16_t)roundToInt16(cbu << 13);
//scale coefficients by cy
- crv = ((crv << 16) + 0x8000) / cy;
- cbu = ((cbu << 16) + 0x8000) / cy;
- cgu = ((cgu << 16) + 0x8000) / cy;
- cgv = ((cgv << 16) + 0x8000) / cy;
+ crv = ((crv << 16) + 0x8000) / FFMAX(cy, 1);
+ cbu = ((cbu << 16) + 0x8000) / FFMAX(cy, 1);
+ cgu = ((cgu << 16) + 0x8000) / FFMAX(cy, 1);
+ cgv = ((cgv << 16) + 0x8000) / FFMAX(cy, 1);
av_freep(&c->yuvTable);
--
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