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mtv: Make sure audio_subsegments is not 0

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audio_subsegments would be 0 and cause floating point exceptions
Fixes bugzilla #144

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
This commit is contained in:
Shitiz Garg 2011-12-16 00:36:27 +05:30 committed by Justin Ruggles
parent f13a9ca906
commit feb15cee5e
1 changed files with 6 additions and 0 deletions
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6
libavformat/mtv.c
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@ -106,6 +106,12 @@ static int mtv_read_header(AVFormatContext *s, AVFormatParameters *ap)
avio_skip(pb, 4);
audio_subsegments = avio_rl16(pb);
if (audio_subsegments == 0) {
av_log_ask_for_sample(s, "MTV files without audio are not supported\n");
return AVERROR_INVALIDDATA;
}
mtv->full_segment_size =
audio_subsegments * (MTV_AUDIO_PADDING_SIZE + MTV_ASUBCHUNK_DATA_SIZE) +
mtv->img_segment_size;