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Do not detect "00000000..." (and other non-changing values) as adp.

This commit is contained in:
Carl Eugen Hoyos 2013-12-09 13:51:00 +01:00
parent 45fd4ec9ef
commit c5a837658a
1 changed files with 9 additions and 2 deletions
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11
libavformat/adp.c
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@ -26,14 +26,21 @@
static int adp_probe(AVProbeData *p)
{
int i;
int i, changes = 0;
char last = 0;
if (p->buf_size < 32)
return 0;
for (i = 0; i < p->buf_size - 3; i+=32)
for (i = 0; i < p->buf_size - 3; i+=32) {
if (p->buf[i] != p->buf[i+2] || p->buf[i+1] != p->buf[i+3])
return 0;
if (p->buf[i] != last)
changes++;
last = p->buf[i];
}
if (changes <= 1)
return 0;
return p->buf_size < 260 ? 1 : AVPROBE_SCORE_MAX / 4;
}