f->open(fn);
PARA_NOTICE_LOG("%s filter %d/%d (%s) started in slot %d\n",
audio_formats[s->format], i, nf, f->name, slot_num);
f->open(fn);
PARA_NOTICE_LOG("%s filter %d/%d (%s) started in slot %d\n",
audio_formats[s->format], i, nf, f->name, slot_num);