From ebfe0c6eb800222955d480b943b646e7a6ee2a1c Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 31 May 2012 16:14:27 +0200 Subject: [PATCH] ac3_probe: speedup by checking for header earlier Signed-off-by: Michael Niedermayer --- libavformat/ac3dec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/ac3dec.c b/libavformat/ac3dec.c index ba05f740fd..3741ee44fc 100644 --- a/libavformat/ac3dec.c +++ b/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++) {