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swscale: align vertical filtersize by 2 on x86.

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The vertical scaler handles 2 rows at a time and thus requires
alignment by 2, or else it'll read invalid memory and result in
corrupt output.
This commit is contained in:
Ronald S. Bultje
2011-11-04 12:19:29 -07:00
parent 43317fd52c
commit 1deb08fcb6
1 changed files with 1 additions and 1 deletions
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2
libswscale/utils.c
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@@ -962,7 +962,7 @@ int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter)
/* precalculate vertical scaler filter coefficients */ /* precalculate vertical scaler filter coefficients */
{ {
const int filterAlign= const int filterAlign=
(HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) && (flags & SWS_ACCURATE_RND) ? 2 : (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) ? 2 :
(HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) ? 8 : (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) ? 8 :
1; 1;