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lavf probe: prevent codec probe with no data at all seen

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This occurs with fuzzed mpeg-ts files. set_codec_from_probe_data() is
called with a zeroed AVProbeData since no packet made through for
specific stream.
This commit is contained in:
Janne Grunau 2012-09-07 16:27:21 +02:00
parent a34a609fc1
commit 6746cd7f61
1 changed files with 5 additions and 0 deletions
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5
libavformat/utils.c
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@ -625,6 +625,11 @@ static void probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
} else {
st->probe_packets = 0;
if (!pd->buf_size) {
av_log(s, AV_LOG_ERROR, "nothing to probe for stream %d\n",
st->index);
return;
}
}
if (!st->probe_packets ||