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avformat/wavdec: add basic sanity check for the sample count 

Fixes Ticket3708

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-07-14 14:52:18 +02:00
parent 2a9b4c0f05
commit 47c84c0bf7
1 changed files with 5 additions and 0 deletions
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5
libavformat/wavdec.c
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@ -402,6 +402,11 @@ break_loop:
avio_seek(pb, data_ofs, SEEK_SET);
if (data_size > 0 && sample_count && data_size / sample_count / st->codec->channels > 8) {
av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);
sample_count = 0;
}
if (!sample_count || av_get_exact_bits_per_sample(st->codec->codec_id) > 0)
if ( st->codec->channels
&& data_size