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prevent O(n^2) execution of ff_mpa_decode_header() for valid mp3 files 

Originally committed as revision 11144 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2007-12-03 04:49:01 +00:00
parent e515221618
commit 5110d151b6
1 changed files with 2 additions and 0 deletions
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libavformat/mp3.c
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@ -418,6 +418,8 @@ static int mp3_read_probe(AVProbeData *p)
max_frames = FFMAX(max_frames, frames);
if(buf == p->buf)
first_frames= frames;
if(buf2 > end)
break;
}
if (first_frames>=3) return AVPROBE_SCORE_MAX/2+1;
else if(max_frames>=3) return AVPROBE_SCORE_MAX/4;