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swscale: fix another integer overflow.
author
Ronald S. Bultje
<rsbultje@gmail.com>
Wed, 29 Feb 2012 02:21:31 +0000
(18:21 -0800)
committer
Ronald S. Bultje
<rsbultje@gmail.com>
Wed, 29 Feb 2012 19:19:03 +0000
(11:19 -0800)
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
libswscale/utils.c
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diff --git
a/libswscale/utils.c
b/libswscale/utils.c
index
3b488ca
..
7c89a70
100644
(file)
--- a/
libswscale/utils.c
+++ b/
libswscale/utils.c
@@
-1014,7
+1014,7
@@
int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter)
c->vLumBufSize= c->vLumFilterSize;
c->vChrBufSize= c->vChrFilterSize;
for (i=0; i<dstH; i++) {
- int chrI
= i*
c->chrDstH / dstH;
+ int chrI
= (int64_t) i *
c->chrDstH / dstH;
int nextSlice= FFMAX(c->vLumFilterPos[i ] + c->vLumFilterSize - 1,
((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));