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avcodec/mlpdsp: Fix runtime error: signed integer overflow: -24419392 * 128 cannot be represented in type 'int'

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Fixes: 1711/clusterfuzz-testcase-minimized-5248503515185152

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-21 02:42:12 +02:00
parent 384508b2ff
commit 1d04fc94e1
1 changed files with 1 additions and 1 deletions
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libavcodec/mlpdsp.c
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@ -114,7 +114,7 @@ int32_t ff_mlp_pack_output(int32_t lossless_check_data,
for (out_ch = 0; out_ch <= max_matrix_channel; out_ch++) { for (out_ch = 0; out_ch <= max_matrix_channel; out_ch++) {
int mat_ch = ch_assign[out_ch]; int mat_ch = ch_assign[out_ch];
int32_t sample = sample_buffer[i][mat_ch] * int32_t sample = sample_buffer[i][mat_ch] *
(1 << output_shift[mat_ch]); (1U << output_shift[mat_ch]);
lossless_check_data ^= (sample & 0xffffff) << mat_ch; lossless_check_data ^= (sample & 0xffffff) << mat_ch;
if (is32) if (is32)
*data_32++ = sample << 8; *data_32++ = sample << 8;