static int idcin_probe(AVProbeData *p)
{
unsigned int number, sample_rate;
+ unsigned int w, h;
+ int i;
/*
* This is what you could call a "probabilistic" file check: id CIN
/* check we have enough data to do all checks, otherwise the
0-padding may cause a wrong recognition */
- if (p->buf_size < 20)
+ if (p->buf_size < 20 + HUFFMAN_TABLE_SIZE + 12)
return 0;
/* check the video width */
- number = AV_RL32(&p->buf[0]);
- if ((number == 0) || (number > 1024))
+ w = AV_RL32(&p->buf[0]);
+ if ((w == 0) || (w > 1024))
return 0;
/* check the video height */
- number = AV_RL32(&p->buf[4]);
- if ((number == 0) || (number > 1024))
+ h = AV_RL32(&p->buf[4]);
+ if ((h == 0) || (h > 1024))
return 0;
/* check the audio sample rate */
if (number > 2 || sample_rate && !number)
return 0;
+ i = 20 + HUFFMAN_TABLE_SIZE;
+ if (AV_RL32(&p->buf[i]) == 1)
+ i += 768;
+
+ if (i+12 > p->buf_size || AV_RL32(&p->buf[i+8]) != w*h)
+ return 1;
+
/* return half certainty since this check is a bit sketchy */
return AVPROBE_SCORE_EXTENSION;
}