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Merge commit 'df33a58e5311ee9a64a573889b883a80e981af7b'

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* commit 'df33a58e5311ee9a64a573889b883a80e981af7b':
  lavf: avoid integer overflow when estimating bitrate

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2013-09-03 14:28:49 +02:00
parent b0ba2bf8c6 df33a58e53
commit d07d54fd56
1 changed files with 7 additions and 2 deletions
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9
libavformat/utils.c
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@@ -2222,8 +2222,13 @@ static void estimate_timings_from_bit_rate(AVFormatContext *ic)
int bit_rate = 0; int bit_rate = 0;
for(i=0;i<ic->nb_streams;i++) { for(i=0;i<ic->nb_streams;i++) {
st = ic->streams[i]; st = ic->streams[i];
if (st->codec->bit_rate > 0) if (st->codec->bit_rate > 0) {
bit_rate += st->codec->bit_rate; if (INT_MAX - st->codec->bit_rate > bit_rate) {
bit_rate = 0;
break;
}
bit_rate += st->codec->bit_rate;
}
} }
ic->bit_rate = bit_rate; ic->bit_rate = bit_rate;
} }