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avformat/matroskadec: check out_samplerate before using it in av_rescale()

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Prevent assertion failure with damaged input

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-08-18 02:20:54 +02:00
parent af248fa117
commit 338f8b2eaf
1 changed files with 2 additions and 0 deletions
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2
libavformat/matroskadec.c
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@ -1737,6 +1737,8 @@ static int matroska_read_header(AVFormatContext *s)
avio_wl16(&b, 1);
avio_wl16(&b, track->audio.channels);
avio_wl16(&b, track->audio.bitdepth);
if (track->audio.out_samplerate < 0 || track->audio.out_samplerate > INT_MAX)
return AVERROR_INVALIDDATA;
avio_wl32(&b, track->audio.out_samplerate);
avio_wl32(&b, av_rescale((matroska->duration * matroska->time_scale), track->audio.out_samplerate, AV_TIME_BASE * 1000));
} else if (codec_id == AV_CODEC_ID_RV10 || codec_id == AV_CODEC_ID_RV20 ||