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swscale/utils: Allocate more dithererror 

Fixes: out of array read
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-02-17 01:04:13 +01:00
parent 6ef32ea574
commit 18f26f8a2f
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1 changed files with 1 additions and 1 deletions
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2
libswscale/utils.c
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@ -1885,7 +1885,7 @@ static av_cold int sws_init_single_context(SwsContext *c, SwsFilter *srcFilter,
}
for (i = 0; i < 4; i++)
if (!FF_ALLOCZ_TYPED_ARRAY(c->dither_error[i], c->dstW + 2))
if (!FF_ALLOCZ_TYPED_ARRAY(c->dither_error[i], c->dstW + 3))
goto nomem;
c->needAlpha = (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat)) ? 1 : 0;