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ac3_probe: speedup by checking for header earlier

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit ebfe0c6eb800222955d480b943b646e7a6ee2a1c)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-05-31 16:14:27 +02:00
parent d3d6849d17
commit 48094cb23a
1 changed files with 2 additions and 0 deletions

2
libavformat/ac3dec.c

@ -37,6 +37,8 @@ static int ac3_eac3_probe(AVProbeData *p, enum CodecID expected_codec_id)
end = buf + p->buf_size;
for(; buf < end; buf++) {
if(buf > p->buf && (buf[0] != 0x0B || buf[1] != 0x77) )
continue;
buf2 = buf;
for(frames = 0; buf2 < end; frames++) {