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libavformat/mtv: donwgrade probe score for < 512

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MTV has a 512 bytes header. We should be able to
parse required fiels from the first 57 (rest is
padding) but if we haven't seen enough data then
go with SCORE_EXTENSION.

Signed-off-by: Reynaldo H. Verdejo Pinochet <r.verdejo@sisa.samsung.com>
This commit is contained in:
Reynaldo H. Verdejo Pinochet 2014-01-23 16:03:09 -03:00
parent 30f4c58f6f
commit d467e7df1a
1 changed files with 7 additions and 0 deletions
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7
libavformat/mtv.c
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@ -78,6 +78,13 @@ static int mtv_probe(AVProbeData *p)
if(p->buf[51] != 16)
return AVPROBE_SCORE_EXTENSION / 2; // But we are going to assume 16bpp anyway ..
/* We had enough data to parse header values
* but we expect to be able to get 512 bytes
* of header to be sure.
*/
if (p->buf_size < MTV_HEADER_SIZE)
return AVPROBE_SCORE_EXTENSION;
return AVPROBE_SCORE_MAX;
}