printf ("  detected .4xm file\n");
static int fourxm_probe(AVProbeData *p){    if ((BE_32(&p->buf[0]) != RIFF_TAG) ||        (BE_32(&p->buf[8]) != _4XMV_TAG))        return 0;printf ("  detected .4xm file\n");    return AVPROBE_SCORE_MAX;}