From e5e422bcc3e6deee8c5c5bf8f5aeca2c051542f5 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Tue, 8 Jan 2013 02:43:14 +0100
Subject: [PATCH] mxfdec: Fix integer overflow with many channels
Fixes division by zero
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Reviewed-by: Matthieu Bouron <matthieu.bouron@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavformat/mxfdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index bb5f4a78083..648a579bef0 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -2070,7 +2070,7 @@ static int mxf_set_audio_pts(MXFContext *mxf, AVCodecContext *codec, AVPacket *p
pkt->pts = track->sample_count;
if (codec->channels <= 0 || av_get_bits_per_sample(codec->codec_id) <= 0)
return AVERROR(EINVAL);
- track->sample_count += pkt->size / (codec->channels * av_get_bits_per_sample(codec->codec_id) / 8);
+ track->sample_count += pkt->size / (codec->channels * (int64_t)av_get_bits_per_sample(codec->codec_id) / 8);
return 0;
}
--
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