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avcodec/hq_hqa: Fix runtime error: left shift of negative value -207

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Fixes: 1375/clusterfuzz-testcase-minimized-6070134701555712

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 1283c42447)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-06 19:11:46 +02:00
parent 99bedf74ac
commit 66b7e165db
1 changed files with 2 additions and 2 deletions
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4
libavcodec/hq_hqa.c
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@ -68,11 +68,11 @@ static int hq_decode_block(HQContext *c, GetBitContext *gb, int16_t block[64],
memset(block, 0, 64 * sizeof(*block));
if (!is_hqa) {
block[0] = get_sbits(gb, 9) << 6;
block[0] = get_sbits(gb, 9) * 64;
q = ff_hq_quants[qsel][is_chroma][get_bits(gb, 2)];
} else {
q = ff_hq_quants[qsel][is_chroma][get_bits(gb, 2)];
block[0] = get_sbits(gb, 9) << 6;
block[0] = get_sbits(gb, 9) * 64;
}
for (;;) {