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swscale/utils: zero init filter memory as before

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Commit 795bb37a39 removed zeroing of those
buffers, without mention, which introduces corrupted output.

Fixes: 795bb37a39
Fixes: https://github.com/mpv-player/mpv/issues/17317
(cherry picked from commit 10db62d205)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Kacper Michajłow
2026-01-25 16:57:09 +01:00
committed by Michael Niedermayer
parent 503df884f2
commit 2dbfbd9b05
1 changed files with 2 additions and 2 deletions
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libswscale/utils.c
+2 -2
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@@ -532,7 +532,7 @@ static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos,
if (dstFilter)
filter2Size += dstFilter->length - 1;
av_assert0(filter2Size > 0);
filter2 = av_malloc_array(dstW, filter2Size * sizeof(*filter2));
filter2 = av_calloc(dstW, filter2Size * sizeof(*filter2));
if (!filter2)
goto nomem;
for (i = 0; i < dstW; i++) {
@@ -692,7 +692,7 @@ static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos,
// Note the +1 is for the MMX scaler which reads over the end
/* align at 16 for AltiVec (needed by hScale_altivec_real) */
*outFilter = av_malloc_array(dstW + 3, *outFilterSize * sizeof(**outFilter));
*outFilter = av_calloc(dstW + 3, *outFilterSize * sizeof(**outFilter));
if (!*outFilter)
goto nomem;