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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-06 12:17:01 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-06 12:17:54 +0200 |
| commit | c0ffcb34c7e94817be934a1ee4a0b4c054723549 (patch) | |
| tree | 0fcec81b18c22e9d3165bd7f1f0d39aafb6b4fe4 | |
| parent | b20c71409b24460983ba5d9afa0716714f9e0f7d (diff) | |
| download | ffmpeg-c0ffcb34c7e94817be934a1ee4a0b4c054723549.tar.gz | |
avcodec/clearvideo: Fix multiple runtime error: left shift of negative value -1024
Fixes: 1360/clusterfuzz-testcase-minimized-5606472043986944
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/clearvideo.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/clearvideo.c b/libavcodec/clearvideo.c index 437c459aa5..060affeafd 100644 --- a/libavcodec/clearvideo.c +++ b/libavcodec/clearvideo.c @@ -185,8 +185,8 @@ static inline int decode_block(CLVContext *ctx, int16_t *blk, int has_ac, const int t3 = OP( 2408 * blk[5 * step] - 1609 * blk[3 * step]); \ const int t4 = OP( 1108 * blk[2 * step] - 2676 * blk[6 * step]); \ const int t5 = OP( 2676 * blk[2 * step] + 1108 * blk[6 * step]); \ - const int t6 = ((blk[0 * step] + blk[4 * step]) << dshift) + bias; \ - const int t7 = ((blk[0 * step] - blk[4 * step]) << dshift) + bias; \ + const int t6 = ((blk[0 * step] + blk[4 * step]) * (1 << dshift)) + bias; \ + const int t7 = ((blk[0 * step] - blk[4 * step]) * (1 << dshift)) + bias; \ const int t8 = t0 + t2; \ const int t9 = t0 - t2; \ const int tA = 181 * (t9 + (t1 - t3)) + 0x80 >> 8; \ |