avformat/avidec: optimize probe

about 2x as fast Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago · 0d7a14e236
parent f7f4a90174
commit 0d7a14e236
1 changed files with 2 additions and 2 deletions
--- a/libavformat/avidec.c
+++ b/libavformat/avidec.c
@ -1863,8 +1863,8 @@ static int avi_probe(AVProbeData *p)

    /* check file header */
    for (i = 0; avi_headers[i][0]; i++)
-        if (!memcmp(p->buf,     avi_headers[i],     4) &&
-            !memcmp(p->buf + 8, avi_headers[i] + 4, 4))
+        if (AV_RL32(p->buf    ) == AV_RL32(avi_headers[i]    ) &&
+            AV_RL32(p->buf + 8) == AV_RL32(avi_headers[i] + 4))
            return AVPROBE_SCORE_MAX;

    return 0;