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Make dnxhd probe more strict, fail if we detect values in header that would 

make our decoder fail anyway.
dnxhd probe now passes probetest.

Originally committed as revision 19847 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2009-09-14 21:50:23 +00:00
parent 9ecc414195
commit 98487a5b69
1 changed files with 12 additions and 3 deletions
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15
libavformat/raw.c
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@ -580,10 +580,19 @@ static int dirac_probe(AVProbeData *p)
static int dnxhd_probe(AVProbeData *p)
{
static const uint8_t header[] = {0x00,0x00,0x02,0x80,0x01};
if (!memcmp(p->buf, header, 5))
return AVPROBE_SCORE_MAX;
else
int w, h, compression_id;
if (p->buf_size < 0x2c)
return 0;
if (memcmp(p->buf, header, 5))
return 0;
h = AV_RB16(p->buf + 0x18);
w = AV_RB16(p->buf + 0x1a);
if (!w || !h)
return 0;
compression_id = AV_RB32(p->buf + 0x28);
if (compression_id < 1237 || compression_id > 1253)
return 0;
return AVPROBE_SCORE_MAX;
}
#endif