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avformat/vqf: check number of channels before use. 

Fixes division by zero

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-05-07 22:26:22 +02:00
parent 9dd04f6d8c
commit a527e69259
1 changed files with 5 additions and 0 deletions
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5
libavformat/vqf.c
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@ -132,6 +132,11 @@ static int vqf_read_header(AVFormatContext *s)
rate_flag = AV_RB32(comm_chunk + 8);
avio_skip(s->pb, len-12);
if (st->codec->channels <= 0) {
av_log(s, AV_LOG_ERROR, "Invalid number of channels\n");
return AVERROR_INVALIDDATA;
}
st->codec->bit_rate = read_bitrate*1000;
break;
case MKTAG('D','S','I','Z'): // size of compressed data