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| author | Martin Storsjö <martin@martin.st> | 2013-09-28 23:13:26 +0300 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2013-09-29 19:56:44 +0300 |
| commit | adc09136a4a63b152630abeacb22c56541eacf60 (patch) | |
| tree | f86d2aa1e8a6191ffe928d2c963d54cff14d18b5 | |
| parent | 8d07258bb6063d0780ce2d39443d6dc6d8eedc5a (diff) | |
| download | ffmpeg-adc09136a4a63b152630abeacb22c56541eacf60.tar.gz | |
xwma: Avoid division by zero
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
| -rw-r--r-- | libavformat/xwma.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavformat/xwma.c b/libavformat/xwma.c index 52e423cef7..f4ff8157f8 100644 --- a/libavformat/xwma.c +++ b/libavformat/xwma.c @@ -198,6 +198,14 @@ 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, + "Invalid bits_per_coded_sample %d for %d channels\n", + st->codec->bits_per_coded_sample, st->codec->channels); + 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 |