audio_subsegments would be 0 and cause floating point exceptions
Fixes bugzilla #144
---
libavformat/mtv.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/libavformat/mtv.c b/libavformat/mtv.c
index c3fb15c..77f176b 100644
--- a/libavformat/mtv.c
+++ b/libavformat/mtv.c
@@ -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, "audio_subsegments == 0 not supported\n");
+ return AVERROR_INVALIDDATA;
+ }
+
mtv->full_segment_size =
audio_subsegments * (MTV_AUDIO_PADDING_SIZE + MTV_ASUBCHUNK_DATA_SIZE)
+
mtv->img_segment_size;
--
1.7.5.4
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