sys/dev/audio.c

125 	struct audio_buf play, rec;
137 	int offs;			/* offset between play & rec dir */
474 		sc->rec.used = sc->rec.start = 0;
475 		sc->rec.pos = sc->rec.xrun = 0;
476 		audio_fill_sil(sc, sc->rec.data, sc->rec.len);
507 		nblk = sc->rec.len / sc->rec.blksz;
511 			DPRINTFN(1, "%s: rec ptr wrapped, moving %d blocks\n",
565 		printf("%s: rec interrupt but not recording\n", DEVNAME(sc));
569 		DPRINTF("%s: quiesced, skipping rec intr\n", DEVNAME(sc));
597 	sc->rec.pos += sc->rec.blksz;
601 		ptr = audio_buf_wgetblk(&sc->rec, &count);
602 		audio_fill_sil(sc, ptr, sc->rec.blksz);
604 	audio_buf_wcommit(&sc->rec, sc->rec.blksz);
605 	if (sc->rec.used > sc->rec.len - sc->rec.blksz) {
606 		DPRINTFN(1, "%s: rec overrun\n", DEVNAME(sc));
607 		sc->rec.xrun += sc->rec.blksz;
608 		audio_buf_rdiscard(&sc->rec, sc->rec.blksz);
610 	DPRINTFN(1, "%s: rec intr, used -> %zu\n", DEVNAME(sc), sc->rec.used);
613 		ptr = audio_buf_wgetblk(&sc->rec, &count);
615 		    ptr, sc->rec.blksz, audio_rintr, sc);
617 			printf("%s: rec restart failed: %d\n",
622 	if (sc->rec.used > 0) {
623 		DPRINTFN(1, "%s: rec wakeup, chan = %d\n",
624 		    DEVNAME(sc), sc->rec.blocking);
625 		audio_buf_wakeup(&sc->rec);
673 			    sc->rec.data,
674 			    sc->rec.data + sc->rec.len,
675 			    sc->rec.blksz,
679 			ptr = audio_buf_wgetblk(&sc->rec, &count);
681 			    ptr, sc->rec.blksz, audio_rintr, sc);
705 	sc->play.xrun = sc->play.pos = sc->rec.xrun = sc->rec.pos = 0;
727 	if ((sc->mode & AUMODE_RECORD) && sc->rec.used != 0)
751 			max = sc->rec.datalen / 2 / (sc->rchan * sc->bps);
803 	if ((sc->mode & AUMODE_RECORD) && blk_max > sc->rec.datalen / 2)
804 		blk_max = sc->rec.datalen / 2;
866 		max = sc->rec.datalen / (sc->round * sc->rchan * sc->bps);
870 			DPRINTF("%s: rec nblks -> %u\n", DEVNAME(sc), max);
872 		sc->rec.nblks = max;
1035 		sc->rec.blksz = sc->round * sc->rchan * sc->bps;
1036 		sc->rec.len = sc->rec.nblks * sc->rec.blksz;
1057 	if ((sc->mode & AUMODE_RECORD) && sc->rec.used != 0) {
1168 		    sc->rec.data, sc->rec.len);
1236 	error = audio_buf_init(sc, &sc->rec, AUMODE_RECORD);
1260 	sc->play.pos = sc->play.xrun = sc->rec.pos = sc->rec.xrun = 0;
1312 		 * good drivers run play and rec handlers in a single
1314 		 * sc->quiesce value to both play and rec handlers
1366 				sc->rec.start = sc->rec.len - sc->rec.used;
1367 				audio_fill_sil(sc, sc->rec.data, sc->rec.len);
1407 			wakeup(&sc->rec.blocking);
1416 	klist_invalidate(&sc->rec.klist);
1424 	audio_buf_done(sc, &sc->rec);
1491 	sc->rec.blocking = 0;
1614 	while (sc->rec.used == 0) {
1620 		sc->rec.blocking = 1;
1621 		error = msleep_nsec(&sc->rec.blocking,
1634 	while (uio->uio_resid > 0 && sc->rec.used > 0) {
1635 		ptr = audio_buf_rgetblk(&sc->rec, &count);
1640 		    DEVNAME(sc), ptr - sc->rec.data, count);
1647 		audio_buf_rdiscard(&sc->rec, count);
1764 		ap->rec_pos = sc->rec.pos;
1765 		ap->rec_xrun = sc->rec.xrun;
2158 			klist = &sc->rec.klist;
2195 	klist_remove(&sc->rec.klist, kn);
2205 	return (sc->mode & AUMODE_RECORD) && (sc->rec.used > 0);