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Diffstat (limited to 'sys/dev/audio.c')
-rw-r--r--sys/dev/audio.c99
1 files changed, 68 insertions, 31 deletions
diff --git a/sys/dev/audio.c b/sys/dev/audio.c
index 0daedec302c..4d2857a4fef 100644
--- a/sys/dev/audio.c
+++ b/sys/dev/audio.c
@@ -1,5 +1,5 @@
-/* $OpenBSD: audio.c,v 1.4 1996/02/27 09:43:15 niklas Exp $ */
-/* $NetBSD: audio.c,v 1.17 1996/02/16 02:25:43 mycroft Exp $ */
+/* $OpenBSD: audio.c,v 1.5 1996/03/02 00:29:19 niklas Exp $ */
+/* $NetBSD: audio.c,v 1.20 1996/02/20 11:47:22 mycroft Exp $ */
/*
* Copyright (c) 1991-1993 Regents of the University of California.
@@ -626,7 +626,7 @@ audio_init_play(sc)
int s = splaudio();
sc->sc_mode |= AUMODE_PLAY;
- sc->sc_rblks = 0;
+ sc->sc_rblks = sc->sc_wblks = 0;
if (sc->hw_if->speaker_ctl)
sc->hw_if->speaker_ctl(sc->hw_hdl, SPKR_ON);
splx(s);
@@ -647,7 +647,7 @@ audio_drain(sc)
* timeout.
*/
error = audio_sleep_timo(&sc->sc_wchan, "aud dr", 60*hz);
- if (error != 0)
+ if (error)
return (error);
}
return (0);
@@ -738,7 +738,7 @@ audio_read(dev, uio, ioflag)
return (EWOULDBLOCK);
}
error = audio_sleep(&sc->sc_rchan, "aud hr");
- if (error != 0) {
+ if (error) {
splx(s);
return (error);
}
@@ -747,7 +747,9 @@ audio_read(dev, uio, ioflag)
error = audio_silence_copyout(sc, blocksize, uio);
if (error)
break;
+ s = splaudio();
--sc->sc_rblks;
+ splx(s);
} while (uio->uio_resid >= blocksize);
return (error);
}
@@ -763,7 +765,7 @@ audio_read(dev, uio, ioflag)
audiostartr(sc);
error = audio_sleep(&sc->sc_rchan, "aud rd");
splx(s);
- if (error != 0)
+ if (error)
return (error);
}
hp = cb->hp;
@@ -796,6 +798,7 @@ audio_clear(sc)
}
AU_RING_INIT(&sc->rr);
AU_RING_INIT(&sc->pr);
+ sc->sc_rblks = sc->sc_wblks = 0;
splx(s);
}
@@ -1028,16 +1031,26 @@ audio_write(dev, uio, ioflag)
/* wrap the ring buffer if at end */
s = splaudio();
- if (tp >= cb->ep)
- tp = cb->bp;
- cb->tp = tp;
- ++cb->nblk; /* account for buffer filled */
+ if ((sc->sc_mode & AUMODE_PLAY_ALL) == 0 && sc->sc_wblks)
+ /*
+ * discard the block if we sent out a silence
+ * packet that hasn't yet been countered
+ * by user data. (They must supply enough
+ * data to catch up to "real time").
+ */
+ sc->sc_wblks--;
+ else {
+ if (tp >= cb->ep)
+ tp = cb->bp;
+ cb->tp = tp;
+ ++cb->nblk; /* account for buffer filled */
- /*
- * If output isn't active, start it up.
- */
- if (sc->sc_pbus == 0)
- audiostartp(sc);
+ /*
+ * If output isn't active, start it up.
+ */
+ if (sc->sc_pbus == 0)
+ audiostartp(sc);
+ }
splx(s);
}
return (error);
@@ -1060,6 +1073,15 @@ audio_ioctl(dev, cmd, addr, flag, p)
IOCPARM_LEN(cmd), IOCGROUP(cmd), cmd&0xff));
switch (cmd) {
+ case FIOASYNC:
+ if (*(int *)addr) {
+ if (sc->sc_async)
+ return (EBUSY);
+ sc->sc_async = p;
+ } else
+ sc->sc_async = 0;
+ break;
+
case AUDIO_FLUSH:
DPRINTF(("AUDIO_FLUSH\n"));
audio_clear(sc);
@@ -1075,11 +1097,15 @@ audio_ioctl(dev, cmd, addr, flag, p)
break;
/*
- * Number of read samples dropped. We don't know where or
+ * Number of read (write) samples dropped. We don't know where or
* when they were dropped.
*/
case AUDIO_RERROR:
- *(int *)addr = sc->rr.cb_drops != 0;
+ *(int *)addr = sc->rr.cb_drops;
+ break;
+
+ case AUDIO_PERROR:
+ *(int *)addr = sc->pr.cb_drops;
break;
/*
@@ -1310,7 +1336,8 @@ audio_pint(sc)
audio_pint, (void *)sc)) {
DPRINTF(("audio_pint zero failed: %d\n", err));
audio_clear(sc);
- }
+ } else
+ ++sc->sc_wblks;
}
#ifdef AUDIO_DEBUG
@@ -1321,6 +1348,8 @@ audio_pint(sc)
if (cb->nblk <= sc->sc_lowat) {
audio_wakeup(&sc->sc_wchan);
selwakeup(&sc->sc_wsel);
+ if (sc->sc_async)
+ psignal(sc->sc_async, SIGIO);
}
}
@@ -1332,6 +1361,8 @@ audio_pint(sc)
if (hw->full_duplex) {
audio_wakeup(&sc->sc_rchan);
selwakeup(&sc->sc_rsel);
+ if (sc->sc_async)
+ psignal(sc->sc_async, SIGIO);
}
}
@@ -1386,6 +1417,8 @@ audio_rint(sc)
audio_wakeup(&sc->sc_rchan);
selwakeup(&sc->sc_rsel);
+ if (sc->sc_async)
+ psignal(sc->sc_async, SIGIO);
}
}
@@ -1408,7 +1441,7 @@ audiosetinfo(sc, ai)
audio_clear(sc);
cleared = 1;
error = hw->set_out_sr(sc->hw_hdl, p->sample_rate);
- if (error != 0)
+ if (error)
return(error);
sc->sc_50ms = 50 * hw->get_out_sr(sc->hw_hdl) / 1000;
}
@@ -1417,7 +1450,7 @@ audiosetinfo(sc, ai)
audio_clear(sc);
cleared = 1;
error = hw->set_in_sr(sc->hw_hdl, r->sample_rate);
- if (error != 0)
+ if (error)
return(error);
sc->sc_50ms = 50 * hw->get_in_sr(sc->hw_hdl) / 1000;
}
@@ -1426,7 +1459,7 @@ audiosetinfo(sc, ai)
audio_clear(sc);
cleared = 1;
error = hw->set_encoding(sc->hw_hdl, p->encoding);
- if (error != 0)
+ if (error)
return(error);
sc->sc_pencoding = p->encoding;
}
@@ -1435,7 +1468,7 @@ audiosetinfo(sc, ai)
audio_clear(sc);
cleared = 1;
error = hw->set_encoding(sc->hw_hdl, r->encoding);
- if (error != 0)
+ if (error)
return(error);
sc->sc_rencoding = r->encoding;
}
@@ -1444,7 +1477,7 @@ audiosetinfo(sc, ai)
audio_clear(sc);
cleared = 1;
error = hw->set_precision(sc->hw_hdl, p->precision);
- if (error != 0)
+ if (error)
return(error);
sc->sc_blksize = audio_blocksize = audio_calc_blksize(sc);
@@ -1458,7 +1491,7 @@ audiosetinfo(sc, ai)
audio_clear(sc);
cleared = 1;
error = hw->set_precision(sc->hw_hdl, r->precision);
- if (error != 0)
+ if (error)
return(error);
sc->sc_blksize = audio_blocksize = audio_calc_blksize(sc);
@@ -1472,7 +1505,7 @@ audiosetinfo(sc, ai)
audio_clear(sc);
cleared = 1;
error = hw->set_channels(sc->hw_hdl, p->channels);
- if (error != 0)
+ if (error)
return(error);
sc->sc_blksize = audio_blocksize = audio_calc_blksize(sc);
@@ -1486,7 +1519,7 @@ audiosetinfo(sc, ai)
audio_clear(sc);
cleared = 1;
error = hw->set_channels(sc->hw_hdl, r->channels);
- if (error != 0)
+ if (error)
return(error);
sc->sc_blksize = audio_blocksize = audio_calc_blksize(sc);
@@ -1500,7 +1533,7 @@ audiosetinfo(sc, ai)
audio_clear(sc);
cleared = 1;
error = hw->set_out_port(sc->hw_hdl, p->port);
- if (error != 0)
+ if (error)
return(error);
}
if (r->port != ~0) {
@@ -1508,7 +1541,7 @@ audiosetinfo(sc, ai)
audio_clear(sc);
cleared = 1;
error = hw->set_in_port(sc->hw_hdl, r->port);
- if (error != 0)
+ if (error)
return(error);
}
if (p->gain != ~0) {
@@ -1516,14 +1549,18 @@ audiosetinfo(sc, ai)
ct.type = AUDIO_MIXER_VALUE;
ct.un.value.num_channels = 1;
ct.un.value.level[AUDIO_MIXER_LEVEL_MONO] = p->gain;
- hw->set_port(sc->hw_hdl, &ct);
+ error = hw->set_port(sc->hw_hdl, &ct);
+ if (error)
+ return(error);
}
if (r->gain != ~0) {
ct.dev = hw->get_in_port(sc->hw_hdl);
ct.type = AUDIO_MIXER_VALUE;
ct.un.value.num_channels = 1;
ct.un.value.level[AUDIO_MIXER_LEVEL_MONO] = r->gain;
- hw->set_port(sc->hw_hdl, &ct);
+ error = hw->set_port(sc->hw_hdl, &ct);
+ if (error)
+ return(error);
}
if (p->pause != (u_char)~0) {
@@ -1593,7 +1630,7 @@ audiosetinfo(sc, ai)
audio_init_record(sc);
}
error = hw->commit_settings(sc->hw_hdl);
- if (error != 0)
+ if (error)
return (error);
if (cleared) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-04 17:47:04 +0000