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av_image_alloc: Align the width to 8 when align >= 8. 

This allows simd optimized routines to work in steps of 8 pixels
without going over the linesize. (this matters for yuv->rgb24 for example)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-12 21:03:19 +02:00
parent 41a052a6ba
commit 62e5ef95ca
1 changed files with 1 additions and 1 deletions
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2
libavutil/imgutils.c
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@ -188,7 +188,7 @@ int av_image_alloc(uint8_t *pointers[4], int linesizes[4],
if ((ret = av_image_check_size(w, h, 0, NULL)) < 0)
return ret;
if ((ret = av_image_fill_linesizes(linesizes, pix_fmt, w)) < 0)
if ((ret = av_image_fill_linesizes(linesizes, pix_fmt, align>7 ? FFALIGN(w, 8) : w)) < 0)
return ret;
for (i = 0; i < 4; i++)