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avformat/mp3dec: check the number of frames per buffer size 

Fixes misdetection of issue3327-libc-2.17.so

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-05-12 21:02:06 +02:00
parent b3b505c73b
commit a8bc175dd9
1 changed files with 2 additions and 2 deletions
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4
libavformat/mp3dec.c
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@ -90,10 +90,10 @@ static int mp3_read_probe(AVProbeData *p)
// issues with MPEG-files!
if (first_frames>=4) return AVPROBE_SCORE_EXTENSION + 1;
else if(max_frames>200)return AVPROBE_SCORE_EXTENSION;
else if(max_frames>=4) return AVPROBE_SCORE_EXTENSION / 2;
else if(max_frames>=4 && max_frames >= p->buf_size/10000) return AVPROBE_SCORE_EXTENSION / 2;
else if(ff_id3v2_match(buf0, ID3v2_DEFAULT_MAGIC) && 2*ff_id3v2_tag_len(buf0) >= p->buf_size)
return p->buf_size < PROBE_BUF_MAX ? AVPROBE_SCORE_EXTENSION / 4 : AVPROBE_SCORE_EXTENSION - 2;
else if(max_frames>=1) return 1;
else if(max_frames>=1 && max_frames >= p->buf_size/10000) return 1;
else return 0;
//mpegps_mp3_unrecognized_format.mpg has max_frames=3
}