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riffdec: Add sanity checks for the sample rate

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This avoids a division by zero for G726.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2013-09-28 23:32:39 +03:00
parent 28ff439efd
commit d07aa3f02b
1 changed files with 5 additions and 0 deletions
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5
libavformat/riffdec.c
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@ -120,6 +120,11 @@ int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)
if (size > 0)
avio_skip(pb, size);
}
if (codec->sample_rate <= 0) {
av_log(NULL, AV_LOG_ERROR,
"Invalid sample rate: %d\n", codec->sample_rate);
return AVERROR_INVALIDDATA;
}
if (codec->codec_id == AV_CODEC_ID_AAC_LATM) {
/* Channels and sample_rate values are those prior to applying SBR
* and/or PS. */