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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-05-31 16:19:26 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-06-07 00:55:24 +0200 |
| commit | 0a311df6d96e5155bbfb1824be50f2e2b3f7a30e (patch) | |
| tree | 7490358ab2cc9ff92ba54bba3a58fee092287679 | |
| parent | 48094cb23a8222f7e31ddd60a59f84a825837426 (diff) | |
| download | ffmpeg-0a311df6d96e5155bbfb1824be50f2e2b3f7a30e.tar.gz | |
ipmovie_probe: speedup by avoiding memcmp() call
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit cc4d80c99ff3169b71c62691d5c7602ef673c3dc)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavformat/ipmovie.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavformat/ipmovie.c b/libavformat/ipmovie.c index a60b961573..30ed16dd78 100644 --- a/libavformat/ipmovie.c +++ b/libavformat/ipmovie.c @@ -529,8 +529,9 @@ static int ipmovie_probe(AVProbeData *p) uint8_t *b = p->buf; uint8_t *b_end = p->buf + p->buf_size - sizeof(signature); do { - if (memcmp(b++, signature, sizeof(signature)) == 0) + if (b[0] == signature[0] && memcmp(b, signature, sizeof(signature)) == 0) return AVPROBE_SCORE_MAX; + b++; } while (b < b_end); return 0; |