2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
3 * (C) 1997 Luigi Rizzo (luigi@iet.unipi.it)
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * $FreeBSD: src/sys/dev/sound/pcm/sound.c,v 1.93.2.5 2007/06/04 09:06:05 ariff Exp $
28 * $DragonFly: src/sys/dev/sound/pcm/sound.c,v 1.12 2008/01/06 16:55:51 swildner Exp $
31 #include <dev/sound/pcm/sound.h>
32 #include <dev/sound/pcm/vchan.h>
33 #include <dev/sound/pcm/dsp.h>
34 #include <sys/sysctl.h>
35 #include <sys/devfs.h>
37 #include "feeder_if.h"
39 SND_DECLARE_FILE("$DragonFly: src/sys/dev/sound/pcm/sound.c,v 1.12 2008/01/06 16:55:51 swildner Exp $");
41 devclass_t pcm_devclass;
43 int pcm_veto_load = 1;
45 int snd_maxautovchans = 4;
46 TUNABLE_INT("hw.snd.maxautovchans", &snd_maxautovchans);
48 SYSCTL_NODE(_hw, OID_AUTO, snd, CTLFLAG_RD, 0, "Sound driver");
50 static int sndstat_prepare_pcm(struct sbuf *s, device_t dev, int verbose);
52 struct sysctl_ctx_list *
53 snd_sysctl_tree(device_t dev)
55 struct snddev_info *d = device_get_softc(dev);
57 return &d->sysctl_tree;
61 snd_sysctl_tree_top(device_t dev)
63 struct snddev_info *d = device_get_softc(dev);
65 return d->sysctl_tree_top;
69 snd_mtxcreate(const char *desc, const char *type)
74 m = kmalloc(sizeof(*m), M_DEVBUF, M_WAITOK | M_ZERO);
75 lockinit(m, __DECONST(char *, type), 0, LK_CANRECURSE);
78 return (void *)0xcafebabe;
93 snd_mtxassert(void *m)
108 lockmgr(lk, LK_EXCLUSIVE | LK_RETRY);
113 snd_mtxunlock(void *m)
118 lockmgr(lk, LK_RELEASE);
123 snd_mtxsleep(void *addr, sndlock_t lock, int flags, const char *wmesg, int timo)
127 tsleep_interlock(addr, flags);
129 r = tsleep(addr, flags | PINTERLOCKED, wmesg, timo);
137 snd_setup_intr(device_t dev, struct resource *res, int flags, driver_intr_t hand, void *param, void **cookiep)
140 flags &= INTR_MPSAFE;
141 flags |= INTR_TYPE_AV;
143 flags = INTR_TYPE_AV;
145 return bus_setup_intr(dev, res, flags, hand, param, cookiep, NULL);
148 #ifndef PCM_DEBUG_MTX
150 pcm_lock(struct snddev_info *d)
152 snd_mtxlock(d->lock);
156 pcm_unlock(struct snddev_info *d)
158 snd_mtxunlock(d->lock);
163 pcm_getfakechan(struct snddev_info *d)
169 pcm_setvchans(struct snddev_info *d, int newcnt)
171 struct snddev_channel *sce = NULL;
172 struct pcm_channel *c = NULL;
173 int err = 0, vcnt, dcnt, i;
177 if (!(d->flags & SD_F_AUTOVCHAN)) {
182 vcnt = d->vchancount;
183 dcnt = d->playcount + d->reccount;
185 if (newcnt < 0 || (dcnt + newcnt) > (PCMMAXCHAN + 1)) {
193 /* add new vchans - find a parent channel first */
194 SLIST_FOREACH(sce, &d->channels, link) {
197 if (c->direction == PCMDIR_PLAY &&
198 ((c->flags & CHN_F_HAS_VCHAN) ||
200 !(c->flags & (CHN_F_BUSY | CHN_F_VIRTUAL)))))
207 c->flags |= CHN_F_BUSY;
208 while (err == 0 && newcnt > vcnt) {
209 if (dcnt > PCMMAXCHAN) {
210 device_printf(d->dev, "%s: Maximum channel reached.\n", __func__);
213 err = vchan_create(c);
217 } else if (err == E2BIG && newcnt > vcnt)
218 device_printf(d->dev, "%s: err=%d Maximum channel reached.\n", __func__, err);
221 c->flags &= ~CHN_F_BUSY;
223 } else if (newcnt < vcnt) {
224 #define ORPHAN_CDEVT(cdevt) \
225 ((cdevt) == NULL || ((cdevt)->si_drv1 == NULL && \
226 (cdevt)->si_drv2 == NULL))
227 while (err == 0 && newcnt < vcnt) {
229 SLIST_FOREACH(sce, &d->channels, link) {
232 if (c->direction == PCMDIR_PLAY &&
233 (c->flags & CHN_F_VIRTUAL) &&
235 if (!(c->flags & CHN_F_BUSY) &&
236 ORPHAN_CDEVT(sce->dsp_dev))
239 * Either we're busy, or our cdev
240 * has been stolen by dsp_clone().
241 * Skip, and increase newcnt.
243 if (!(c->flags & CHN_F_BUSY))
244 device_printf(d->dev,
245 "%s: <%s> somebody steal my cdev!\n",
256 err = vchan_destroy(c);
260 device_printf(d->dev,
261 "%s: WARNING: vchan_destroy() failed!",
271 /* return error status and a locked channel */
273 pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction,
274 pid_t pid, int chnum)
276 struct pcm_channel *c;
277 struct snddev_channel *sce;
281 /* scan for a free channel */
282 SLIST_FOREACH(sce, &d->channels, link) {
285 if (c->direction == direction && !(c->flags & CHN_F_BUSY)) {
286 if (chnum < 0 || sce->chan_num == chnum) {
287 c->flags |= CHN_F_BUSY;
293 if (sce->chan_num == chnum) {
294 if (c->direction != direction)
296 else if (c->flags & CHN_F_BUSY)
302 } else if (c->direction == direction && (c->flags & CHN_F_BUSY))
310 /* release a locked channel and unlock it */
312 pcm_chnrelease(struct pcm_channel *c)
315 c->flags &= ~CHN_F_BUSY;
322 pcm_chnref(struct pcm_channel *c, int ref)
333 pcm_inprog(struct snddev_info *d, int delta)
349 pcm_setmaxautovchans(struct snddev_info *d, int num)
351 if (num > 0 && d->vchancount == 0)
353 else if (num == 0 && d->vchancount > 0)
359 sysctl_hw_snd_unit(SYSCTL_HANDLER_ARGS)
361 struct snddev_info *d;
365 error = sysctl_handle_int(oidp, &unit, sizeof(unit), req);
366 if (error == 0 && req->newptr != NULL) {
367 if (unit < 0 || (pcm_devclass != NULL &&
368 unit >= devclass_get_maxunit(pcm_devclass)))
370 d = devclass_get_softc(pcm_devclass, unit);
371 if (d == NULL || SLIST_EMPTY(&d->channels))
377 SYSCTL_PROC(_hw_snd, OID_AUTO, unit, CTLTYPE_INT | CTLFLAG_RW,
378 0, sizeof(int), sysctl_hw_snd_unit, "I", "");
382 sysctl_hw_snd_maxautovchans(SYSCTL_HANDLER_ARGS)
384 struct snddev_info *d;
387 v = snd_maxautovchans;
388 error = sysctl_handle_int(oidp, &v, sizeof(v), req);
389 if (error == 0 && req->newptr != NULL) {
390 if (v < 0 || v > PCMMAXCHAN)
392 if (pcm_devclass != NULL && v != snd_maxautovchans) {
393 for (i = 0; i < devclass_get_maxunit(pcm_devclass); i++) {
394 d = devclass_get_softc(pcm_devclass, i);
397 pcm_setmaxautovchans(d, v);
400 snd_maxautovchans = v;
404 SYSCTL_PROC(_hw_snd, OID_AUTO, maxautovchans, CTLTYPE_INT | CTLFLAG_RW,
405 0, sizeof(int), sysctl_hw_snd_maxautovchans, "I", "");
408 pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, void *devinfo)
410 struct snddev_channel *sce;
411 struct pcm_channel *ch, *c;
413 uint32_t flsearch = 0;
414 int direction, err, rpnum, *pnum;
419 direction = PCMDIR_PLAY;
420 pnum = &d->playcount;
425 direction = PCMDIR_REC;
431 direction = PCMDIR_PLAY;
432 pnum = &d->vchancount;
433 flsearch = CHN_F_VIRTUAL;
440 ch = kmalloc(sizeof(*ch), M_DEVBUF, M_WAITOK | M_ZERO);
442 ch->methods = kobj_create(cls, M_DEVBUF, M_WAITOK);
449 snd_mtxlock(d->lock);
452 SLIST_FOREACH(sce, &d->channels, link) {
454 if (direction != c->direction ||
455 (c->flags & CHN_F_VIRTUAL) != flsearch)
457 if (ch->num == c->num)
461 device_printf(d->dev,
462 "%s: %s channel numbering screwed (Expect: %d, Got: %d)\n",
463 __func__, dirs, ch->num, c->num);
465 goto retry_num_search;
469 goto retry_num_search_out;
472 SLIST_FOREACH(sce, &d->channels, link) {
474 if (direction != c->direction ||
475 (c->flags & CHN_F_VIRTUAL) != flsearch)
477 if (ch->num == c->num) {
479 goto retry_num_search;
483 retry_num_search_out:
484 if (*pnum != rpnum) {
485 device_printf(d->dev,
486 "%s: WARNING: pnum screwed : dirs=%s, pnum=%d, rpnum=%d\n",
487 __func__, dirs, *pnum, rpnum);
491 snd_mtxunlock(d->lock);
494 ch->parentsnddev = d;
495 ch->parentchannel = parent;
497 ksnprintf(ch->name, CHN_NAMELEN, "%s:%s:%d", device_get_nameunit(ch->dev), dirs, ch->num);
499 err = chn_init(ch, devinfo, dir, direction);
501 device_printf(d->dev, "chn_init(%s) failed: err = %d\n", ch->name, err);
502 kobj_delete(ch->methods, M_DEVBUF);
504 snd_mtxlock(d->lock);
506 snd_mtxunlock(d->lock);
515 pcm_chn_iterate(struct snddev_info *d, void **cookie)
517 struct snddev_channel **last = (struct snddev_channel **)cookie;
520 *last = SLIST_FIRST(&d->channels);
522 *last = SLIST_NEXT(*last, link);
527 return (*last)->channel;
531 pcm_chn_destroy(struct pcm_channel *ch)
533 struct snddev_info *d;
536 d = ch->parentsnddev;
539 device_printf(d->dev, "chn_kill(%s) failed, err = %d\n", ch->name, err);
543 kobj_delete(ch->methods, M_DEVBUF);
550 pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch)
552 struct snddev_channel *sce, *tmp, *after;
554 int device = device_get_unit(d->dev);
558 * Note it's confusing nomenclature.
560 * device -> pcm_device
561 * unit -> pcm_channel
562 * channel -> snddev_channel
567 sce = kmalloc(sizeof(*sce), M_DEVBUF, M_WAITOK | M_ZERO);
569 snd_mtxlock(d->lock);
574 SLIST_FOREACH(tmp, &d->channels, link) {
575 if (sce->chan_num == tmp->chan_num)
579 device_printf(d->dev,
580 "%s: cdev numbering screwed (Expect: %d, Got: %d)\n",
581 __func__, sce->chan_num, tmp->chan_num);
583 goto retry_chan_num_search;
588 goto retry_chan_num_search_out;
589 retry_chan_num_search:
591 * Look for possible channel numbering collision. This may not
592 * be optimized, but it will ensure that no collision occured.
593 * Can be considered cheap since none of the locking/unlocking
594 * operations involved.
598 SLIST_FOREACH(tmp, &d->channels, link) {
599 if (sce->chan_num == tmp->chan_num) {
601 goto retry_chan_num_search;
603 if (sce->chan_num > tmp->chan_num)
607 retry_chan_num_search_out:
609 * Don't overflow PCMMKMINOR / PCMMAXCHAN.
611 if (sce->chan_num > PCMMAXCHAN) {
612 snd_mtxunlock(d->lock);
613 device_printf(d->dev,
614 "%s: WARNING: sce->chan_num overflow! (%d)\n",
615 __func__, sce->chan_num);
616 kfree(sce, M_DEVBUF);
619 if (d->devcount != rdevcount) {
620 device_printf(d->dev,
621 "%s: WARNING: devcount screwed! d->devcount=%u, rdevcount=%u\n",
622 __func__, d->devcount, rdevcount);
623 d->devcount = rdevcount;
627 SLIST_INSERT_HEAD(&d->channels, sce, link);
629 SLIST_INSERT_AFTER(after, sce, link);
634 SLIST_FOREACH(tmp, &d->channels, link) {
635 if (cnum != tmp->chan_num)
636 device_printf(d->dev,
637 "%s: WARNING: inconsistent cdev numbering! (Expect: %d, Got: %d)\n",
638 __func__, cnum, tmp->chan_num);
644 namelen = strlen(ch->name);
645 if ((CHN_NAMELEN - namelen) > 10) { /* ":dspXX.YYY" */
646 ksnprintf(ch->name + namelen,
647 CHN_NAMELEN - namelen, ":dsp%d.%d",
648 device, sce->chan_num);
650 snd_mtxunlock(d->lock);
656 pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch)
658 struct snddev_channel *sce;
663 if (!mtx_owned(d->lock)) {
664 snd_mtxlock(d->lock);
669 SLIST_FOREACH(sce, &d->channels, link) {
670 if (sce->channel == ch)
675 snd_mtxunlock(d->lock);
679 SLIST_REMOVE(&d->channels, sce, snddev_channel, link);
681 if (ch->flags & CHN_F_VIRTUAL)
683 else if (ch->direction == PCMDIR_REC)
690 snd_mtxunlock(d->lock);
692 kfree(sce, M_DEVBUF);
698 pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo)
700 struct snddev_info *d = device_get_softc(dev);
701 struct pcm_channel *ch;
704 ch = pcm_chn_create(d, NULL, cls, dir, devinfo);
706 device_printf(d->dev, "pcm_chn_create(%s, %d, %p) failed\n", cls->name, dir, devinfo);
710 err = pcm_chn_add(d, ch);
712 device_printf(d->dev, "pcm_chn_add(%s) failed, err=%d\n", ch->name, err);
721 pcm_killchan(device_t dev)
723 struct snddev_info *d = device_get_softc(dev);
724 struct snddev_channel *sce;
725 struct pcm_channel *ch;
728 sce = SLIST_FIRST(&d->channels);
731 error = pcm_chn_remove(d, sce->channel);
734 return (pcm_chn_destroy(ch));
738 pcm_setstatus(device_t dev, char *str)
740 struct snddev_info *d = device_get_softc(dev);
742 snd_mtxlock(d->lock);
743 strncpy(d->status, str, SND_STATUSLEN);
744 snd_mtxunlock(d->lock);
745 if (snd_maxautovchans > 0)
751 pcm_getflags(device_t dev)
753 struct snddev_info *d = device_get_softc(dev);
759 pcm_setflags(device_t dev, uint32_t val)
761 struct snddev_info *d = device_get_softc(dev);
767 pcm_getdevinfo(device_t dev)
769 struct snddev_info *d = device_get_softc(dev);
775 pcm_getbuffersize(device_t dev, unsigned int min, unsigned int deflt, unsigned int max)
777 struct snddev_info *d = device_get_softc(dev);
781 if (resource_int_value(device_get_name(dev), device_get_unit(dev), "buffersize", &sz) == 0) {
785 device_printf(dev, "'buffersize=%d' hint is out of range (%d-%d), using %d\n", x, min, max, sz);
792 device_printf(dev, "'buffersize=%d' hint is not a power of 2, using %d\n", sz, x);
805 pcm_register(device_t dev, void *devinfo, int numplay, int numrec)
807 struct snddev_info *d = device_get_softc(dev);
810 device_printf(dev, "disabled due to an error while initialising: %d\n", pcm_veto_load);
815 d->lock = snd_mtxcreate(device_get_nameunit(dev), "sound cdev");
819 * d->flags should be cleared by the allocator of the softc.
820 * We cannot clear this field here because several devices set
821 * this flag before calling pcm_register().
826 d->devinfo = devinfo;
833 SLIST_INIT(&d->channels);
835 if ((numplay == 0 || numrec == 0) && numplay != numrec)
836 d->flags |= SD_F_SIMPLEX;
838 d->fakechan = fkchan_setup(dev);
839 chn_init(d->fakechan, NULL, 0, 0);
842 sysctl_ctx_init(&d->sysctl_tree);
843 d->sysctl_tree_top = SYSCTL_ADD_NODE(&d->sysctl_tree,
844 SYSCTL_STATIC_CHILDREN(_hw_snd), OID_AUTO,
845 device_get_nameunit(dev), CTLFLAG_RD, 0, "");
846 if (d->sysctl_tree_top == NULL) {
847 sysctl_ctx_free(&d->sysctl_tree);
850 SYSCTL_ADD_INT(snd_sysctl_tree(dev), SYSCTL_CHILDREN(snd_sysctl_tree_top(dev)),
851 OID_AUTO, "buffersize", CTLFLAG_RD, &d->bufsz, 0, "");
854 d->flags |= SD_F_AUTOVCHAN;
858 /* XXX use make_autoclone_dev? */
859 /* XXX PCMMAXCHAN can be created for regular channels */
860 d->dsp_clonedev = make_dev(&dsp_ops,
861 PCMMKMINOR(device_get_unit(dev), PCMMAXCHAN),
862 UID_ROOT, GID_WHEEL, 0666, "dsp%d",
863 device_get_unit(dev));
864 devfs_clone_handler_add(devtoname(d->dsp_clonedev), dsp_clone);
866 sndstat_register(dev, d->status, sndstat_prepare_pcm);
869 snd_mtxfree(d->lock);
874 pcm_unregister(device_t dev)
876 struct snddev_info *d = device_get_softc(dev);
877 struct snddev_channel *sce;
878 struct pcmchan_children *pce;
879 struct pcm_channel *ch;
881 if (sndstat_acquire() != 0) {
882 device_printf(dev, "unregister: sndstat busy\n");
886 snd_mtxlock(d->lock);
888 device_printf(dev, "unregister: operation in progress\n");
889 snd_mtxunlock(d->lock);
894 SLIST_FOREACH(sce, &d->channels, link) {
896 if (ch->refcount > 0) {
897 device_printf(dev, "unregister: channel %s busy (pid %d)\n", ch->name, ch->pid);
898 snd_mtxunlock(d->lock);
904 if (mixer_uninit(dev) == EBUSY) {
905 device_printf(dev, "unregister: mixer busy\n");
906 snd_mtxunlock(d->lock);
911 SLIST_FOREACH(sce, &d->channels, link) {
913 destroy_dev(sce->dsp_dev);
920 pce = SLIST_FIRST(&ch->children);
921 while (pce != NULL) {
923 device_printf(d->dev, "<%s> removing <%s>\n",
924 ch->name, (pce->channel != NULL) ?
925 pce->channel->name : "unknown");
927 SLIST_REMOVE(&ch->children, pce, pcmchan_children, link);
928 kfree(pce, M_DEVBUF);
929 pce = SLIST_FIRST(&ch->children);
934 d->sysctl_tree_top = NULL;
935 sysctl_ctx_free(&d->sysctl_tree);
939 SLIST_FOREACH(sce, &d->channels, link) {
943 if (!SLIST_EMPTY(&ch->children))
944 device_printf(d->dev, "%s: WARNING: <%s> dangling child!\n",
948 while (!SLIST_EMPTY(&d->channels))
951 chn_kill(d->fakechan);
952 fkchan_kill(d->fakechan);
954 destroy_autoclone_dev(d->dsp_clonedev, NULL);
957 device_printf(d->dev, "%s: devcount=%u, playcount=%u, "
958 "reccount=%u, vchancount=%u\n",
959 __func__, d->devcount, d->playcount, d->reccount,
962 snd_mtxunlock(d->lock);
963 snd_mtxfree(d->lock);
964 sndstat_unregister(dev);
969 /************************************************************************/
972 sndstat_prepare_pcm(struct sbuf *s, device_t dev, int verbose)
974 struct snddev_info *d;
975 struct snddev_channel *sce;
976 struct pcm_channel *c;
977 struct pcm_feeder *f;
983 d = device_get_softc(dev);
987 snd_mtxlock(d->lock);
988 if (!SLIST_EMPTY(&d->channels)) {
990 SLIST_FOREACH(sce, &d->channels, link) {
992 if (c->direction == PCMDIR_PLAY) {
993 if (c->flags & CHN_F_VIRTUAL)
1000 sbuf_printf(s, " (%dp/%dr/%dv channels%s%s)", d->playcount, d->reccount, d->vchancount,
1001 (d->flags & SD_F_SIMPLEX)? "" : " duplex",
1003 (device_get_unit(dev) == snd_unit)? " default" : ""
1010 snd_mtxunlock(d->lock);
1014 SLIST_FOREACH(sce, &d->channels, link) {
1017 KASSERT(c->bufhard != NULL && c->bufsoft != NULL,
1018 ("hosed pcm channel setup"));
1020 sbuf_printf(s, "\n\t");
1022 /* it would be better to indent child channels */
1023 sbuf_printf(s, "%s[%s]: ", c->parentchannel? c->parentchannel->name : "", c->name);
1024 sbuf_printf(s, "spd %d", c->speed);
1025 if (c->speed != sndbuf_getspd(c->bufhard))
1026 sbuf_printf(s, "/%d", sndbuf_getspd(c->bufhard));
1027 sbuf_printf(s, ", fmt 0x%08x", c->format);
1028 if (c->format != sndbuf_getfmt(c->bufhard))
1029 sbuf_printf(s, "/0x%08x", sndbuf_getfmt(c->bufhard));
1030 sbuf_printf(s, ", flags 0x%08x, 0x%08x", c->flags, c->feederflags);
1032 sbuf_printf(s, ", pid %d", c->pid);
1033 sbuf_printf(s, "\n\t");
1035 sbuf_printf(s, "interrupts %d, ", c->interrupts);
1036 if (c->direction == PCMDIR_REC)
1037 sbuf_printf(s, "overruns %d, hfree %d, sfree %d [b:%d/%d/%d|bs:%d/%d/%d]",
1038 c->xruns, sndbuf_getfree(c->bufhard), sndbuf_getfree(c->bufsoft),
1039 sndbuf_getsize(c->bufhard), sndbuf_getblksz(c->bufhard),
1040 sndbuf_getblkcnt(c->bufhard),
1041 sndbuf_getsize(c->bufsoft), sndbuf_getblksz(c->bufsoft),
1042 sndbuf_getblkcnt(c->bufsoft));
1044 sbuf_printf(s, "underruns %d, ready %d [b:%d/%d/%d|bs:%d/%d/%d]",
1045 c->xruns, sndbuf_getready(c->bufsoft),
1046 sndbuf_getsize(c->bufhard), sndbuf_getblksz(c->bufhard),
1047 sndbuf_getblkcnt(c->bufhard),
1048 sndbuf_getsize(c->bufsoft), sndbuf_getblksz(c->bufsoft),
1049 sndbuf_getblkcnt(c->bufsoft));
1050 sbuf_printf(s, "\n\t");
1052 sbuf_printf(s, "{%s}", (c->direction == PCMDIR_REC)? "hardware" : "userland");
1053 sbuf_printf(s, " -> ");
1055 while (f->source != NULL)
1058 sbuf_printf(s, "%s", f->class->name);
1059 if (f->desc->type == FEEDER_FMT)
1060 sbuf_printf(s, "(0x%08x -> 0x%08x)", f->desc->in, f->desc->out);
1061 if (f->desc->type == FEEDER_RATE)
1062 sbuf_printf(s, "(%d -> %d)", FEEDER_GET(f, FEEDRATE_SRC), FEEDER_GET(f, FEEDRATE_DST));
1063 if (f->desc->type == FEEDER_ROOT || f->desc->type == FEEDER_MIXER ||
1064 f->desc->type == FEEDER_VOLUME)
1065 sbuf_printf(s, "(0x%08x)", f->desc->out);
1066 sbuf_printf(s, " -> ");
1069 sbuf_printf(s, "{%s}", (c->direction == PCMDIR_REC)? "userland" : "hardware");
1072 sbuf_printf(s, " (mixer only)");
1073 snd_mtxunlock(d->lock);
1078 /************************************************************************/
1080 #ifdef SND_DYNSYSCTL
1082 sysctl_hw_snd_vchans(SYSCTL_HANDLER_ARGS)
1084 struct snddev_info *d;
1089 newcnt = d->vchancount;
1090 err = sysctl_handle_int(oidp, &newcnt, sizeof(newcnt), req);
1092 if (err == 0 && req->newptr != NULL && d->vchancount != newcnt)
1093 err = pcm_setvchans(d, newcnt);
1099 /************************************************************************/
1102 sound_modevent(module_t mod, int type, void *data)
1105 return (midi_modevent(mod, type, data));
1111 DEV_MODULE(sound, sound_modevent, NULL);
1112 MODULE_VERSION(sound, SOUND_MODVER);