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Code Issues Releases Activity

ensure that the probe code runs in O(n)

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Originally committed as revision 11147 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
2007-12-03 08:27:04 +00:00
parent fda767bb4f
commit 5ef5501b71
1 changed files with 1 additions and 3 deletions
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4
libavformat/mp3.c
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@@ -405,7 +405,7 @@ static int mp3_read_probe(AVProbeData *p)
buf = p->buf; buf = p->buf;
end = buf + p->buf_size - sizeof(uint32_t); end = buf + p->buf_size - sizeof(uint32_t);
for(; buf < end; buf++) { for(; buf < end; buf= buf2+1) {
buf2 = buf; buf2 = buf;
for(frames = 0; buf2 < end; frames++) { for(frames = 0; buf2 < end; frames++) {
@@ -418,8 +418,6 @@ static int mp3_read_probe(AVProbeData *p)
max_frames = FFMAX(max_frames, frames); max_frames = FFMAX(max_frames, frames);
if(buf == p->buf) if(buf == p->buf)
first_frames= frames; first_frames= frames;
if(buf2 > end)
break;
} }
if (first_frames>=3) return AVPROBE_SCORE_MAX/2+1; if (first_frames>=3) return AVPROBE_SCORE_MAX/2+1;
else if(max_frames>=3) return AVPROBE_SCORE_MAX/4; else if(max_frames>=3) return AVPROBE_SCORE_MAX/4;