avformat/musx: improve probing

This commit is contained in:
Paul B Mahol 2020-09-03 17:50:45 +02:00
parent 4cfe8123ea
commit 69e22e21e3

View File

@ -20,12 +20,23 @@
*/
#include "libavutil/avassert.h"
#include "libavutil/intreadwrite.h"
#include "avformat.h"
#include "internal.h"
static int musx_probe(const AVProbeData *p)
{
if (memcmp(p->buf, "MUSX", 4))
unsigned version;
if (AV_RB32(p->buf) != MKBETAG('M','U','S','X'))
return 0;
version = AV_RL32(p->buf + 8);
if (version != 10 &&
version != 6 &&
version != 5 &&
version != 4 &&
version != 201)
return 0;
return AVPROBE_SCORE_MAX / 5 * 2;