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avcodec/texturedsp: Fix runtime error: left shift of 255 by 24 places cannot be represented in type 'int'

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Fixes: 1505/clusterfuzz-testcase-minimized-4561688818876416

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-12 13:15:33 +02:00
parent c4c0245686
commit f225003d17
1 changed files with 1 additions and 1 deletions
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2
libavcodec/texturedsp.c
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@ -158,7 +158,7 @@ static inline void dxt3_block_internal(uint8_t *dst, ptrdiff_t stride,
for (x = 0; x < 4; x++) {
uint8_t alpha = alpha_values[x];
uint32_t pixel = colors[code & 3] | (alpha << 24);
uint32_t pixel = colors[code & 3] | ((unsigned)alpha << 24);
code >>= 2;
AV_WL32(dst + x * 4, pixel);