On Fri, Nov 04, 2011 at 12:19:29PM -0700, Ronald S. Bultje wrote:
> From: "Ronald S. Bultje" <[email protected]>
> 
> 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 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/libswscale/utils.c b/libswscale/utils.c
> index 64ac77d..862b273 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;
>  
> -- 

looks OK (for swscale)
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