From 1deb08fcb678364f7cb2559d1e3497d1e5568910 Mon Sep 17 00:00:00 2001 From: "Ronald S. Bultje" Date: Fri, 4 Nov 2011 12:19:29 -0700 Subject: [PATCH] swscale: align vertical filtersize by 2 on x86. 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. --- libswscale/utils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libswscale/utils.c b/libswscale/utils.c index 64ac77d7b7..862b2736f6 100644 --- a/libswscale/utils.c +++ b/libswscale/utils.c @@ -962,7 +962,7 @@ int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter) /* precalculate vertical scaler filter coefficients */ { 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 : 1;