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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 a2d356d382
commit dad88178f3
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GPG Key ID: B18E8928B3948D64
1 changed files with 1 additions and 1 deletions
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libswscale/utils.c
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@ -1763,7 +1763,7 @@ av_cold int sws_init_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;