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avformat/aea: reduce false positives in probing 

Fixes probetest failure

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-12-23 18:41:53 +01:00
parent 0d7a14e236
commit e01467241f
1 changed files with 13 additions and 8 deletions
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21
libavformat/aea.c
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@ -34,12 +34,8 @@ static int aea_read_probe(AVProbeData *p)
/* Magic is '00 08 00 00' in Little Endian*/
if (AV_RL32(p->buf)==0x800) {
int bsm_s, bsm_e, inb_s, inb_e, ch;
ch = p->buf[264];
bsm_s = p->buf[2048];
inb_s = p->buf[2048+1];
inb_e = p->buf[2048+210];
bsm_e = p->buf[2048+211];
int ch, i;
ch = p->buf[264];
if (ch != 1 && ch != 2)
return 0;
@ -48,8 +44,17 @@ static int aea_read_probe(AVProbeData *p)
* the block size mode bytes have to be the same
* the info bytes have to be the same
*/
if (bsm_s == bsm_e && inb_s == inb_e)
return AVPROBE_SCORE_MAX / 4 + 1;
for (i = 2048; i + 211 < p->buf_size; i+= 212) {
int bsm_s, bsm_e, inb_s, inb_e;
bsm_s = p->buf[0];
inb_s = p->buf[1];
inb_e = p->buf[210];
bsm_e = p->buf[211];
if (bsm_s != bsm_e || inb_s != inb_e)
return 0;
}
return AVPROBE_SCORE_MAX / 4 + 1;
}
return 0;
}