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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-11-15 00:56:33 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-11-15 00:56:54 +0100 |
| commit | a3cb7f992f88fcfa524bd9cd08b28e09d6718f75 (patch) | |
| tree | 1bc96a14e2c1a25bb53927f70ca8623bde67cbec | |
| parent | 12eb2fd5394813a6119912b22f5dfc17b4a6b4a0 (diff) | |
| download | ffmpeg-a3cb7f992f88fcfa524bd9cd08b28e09d6718f75.tar.gz | |
xwma: check bytes_per_sample, fix division by 0.
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavformat/xwma.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libavformat/xwma.c b/libavformat/xwma.c index 04c36296d1..db7d9716ca 100644 --- a/libavformat/xwma.c +++ b/libavformat/xwma.c @@ -200,6 +200,12 @@ static int xwma_read_header(AVFormatContext *s) /* Estimate the duration from the total number of output bytes. */ const uint64_t total_decoded_bytes = dpds_table[dpds_table_size - 1]; + + if(!bytes_per_sample) { + av_log(s, AV_LOG_ERROR, "bytes_per_sample is 0\n"); + return AVERROR_INVALIDDATA; + } + st->duration = total_decoded_bytes / bytes_per_sample; /* Use the dpds data to build a seek table. We can only do this after |