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avcodec/mlpdec: Fix runtime error: left shift of negative value -22

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Fixes: 1355/clusterfuzz-testcase-minimized-6662205472768000

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 2017-05-06 12:05:17 +02:00
parent e813df4fa3
commit c535436cbe
1 changed files with 1 additions and 1 deletions
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2
libavcodec/mlpdec.c
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@ -264,7 +264,7 @@ static inline int read_huff_channels(MLPDecodeContext *m, GetBitContext *gbp,
result = (result << lsb_bits) + get_bits(gbp, lsb_bits);
result += cp->sign_huff_offset;
result <<= quant_step_size;
result *= 1 << quant_step_size;
m->sample_buffer[pos + s->blockpos][channel] = result;
}