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swscale/utils: Allocate more dithererror

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Fixes: out of array read
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 18f26f8a2f8dc3b9ec3ac3ab8e03fce15cc8c88d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-02-17 01:04:13 +01:00
parent 4f8ef0c274
commit facfb2d25d
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1 changed files with 1 additions and 1 deletions
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libswscale/utils.c
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@ -1748,7 +1748,7 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter,
}
for (i = 0; i < 4; i++)
FF_ALLOCZ_OR_GOTO(c, c->dither_error[i], (c->dstW+2) * sizeof(int), fail);
FF_ALLOCZ_OR_GOTO(c, c->dither_error[i], (c->dstW+3) * sizeof(int), fail);
c->needAlpha = (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat)) ? 1 : 0;