4 This file is part of PulseAudio.
6 Copyright 2004-2006 Lennart Poettering
7 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
9 PulseAudio is free software; you can redistribute it and/or modify
10 it under the terms of the GNU Lesser General Public License as published
11 by the Free Software Foundation; either version 2 of the License,
12 or (at your option) any later version.
14 PulseAudio is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 General Public License for more details.
19 You should have received a copy of the GNU Lesser General Public License
20 along with PulseAudio; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
31 #include <asoundlib.h>
33 #include <pulse/xmalloc.h>
34 #include <pulse/util.h>
36 #include <pulsecore/core.h>
37 #include <pulsecore/module.h>
38 #include <pulsecore/memchunk.h>
39 #include <pulsecore/sink.h>
40 #include <pulsecore/modargs.h>
41 #include <pulsecore/core-util.h>
42 #include <pulsecore/sample-util.h>
43 #include <pulsecore/log.h>
44 #include <pulsecore/macro.h>
45 #include <pulsecore/thread.h>
46 #include <pulsecore/core-error.h>
47 #include <pulsecore/thread-mq.h>
48 #include <pulsecore/rtpoll.h>
50 #include "alsa-util.h"
51 #include "module-alsa-sink-symdef.h"
53 PA_MODULE_AUTHOR("Lennart Poettering");
54 PA_MODULE_DESCRIPTION("ALSA Sink");
55 PA_MODULE_VERSION(PACKAGE_VERSION);
56 PA_MODULE_LOAD_ONCE(FALSE);
58 "sink_name=<name for the sink> "
59 "device=<ALSA device> "
60 "format=<sample format> "
61 "channels=<number of channels> "
63 "fragments=<number of fragments> "
64 "fragment_size=<fragment size> "
65 "channel_map=<channel map> "
66 "mmap=<enable memory mapping?>");
68 #define DEFAULT_DEVICE "default"
76 pa_thread_mq thread_mq;
79 snd_pcm_t *pcm_handle;
81 pa_alsa_fdlist *mixer_fdl;
82 snd_mixer_t *mixer_handle;
83 snd_mixer_elem_t *mixer_elem;
84 long hw_volume_max, hw_volume_min;
86 size_t frame_size, fragment_size, hwbuf_size;
96 pa_rtpoll_item *alsa_rtpoll_item;
99 static const char* const valid_modargs[] = {
112 static int mmap_write(struct userdata *u) {
116 pa_sink_assert_ref(u->sink);
123 const snd_pcm_channel_area_t *areas;
124 snd_pcm_uframes_t offset, frames;
126 if ((n = snd_pcm_avail_update(u->pcm_handle)) < 0) {
129 pa_log_debug("snd_pcm_avail_update: Buffer underrun!");
133 if ((err = snd_pcm_recover(u->pcm_handle, n, 1)) == 0)
139 pa_log("snd_pcm_avail_update: %s", snd_strerror(err));
143 /* pa_log("Got request for %i samples", (int) n); */
150 if ((err = snd_pcm_mmap_begin(u->pcm_handle, &areas, &offset, &frames)) < 0) {
153 pa_log_debug("snd_pcm_mmap_begin: Buffer underrun!");
157 if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) == 0)
163 pa_log("Failed to write data to DSP: %s", snd_strerror(err));
167 /* Check these are multiples of 8 bit */
168 pa_assert((areas[0].first & 7) == 0);
169 pa_assert((areas[0].step & 7)== 0);
171 /* We assume a single interleaved memory buffer */
172 pa_assert((areas[0].first >> 3) == 0);
173 pa_assert((areas[0].step >> 3) == u->frame_size);
175 p = (uint8_t*) areas[0].addr + (offset * u->frame_size);
177 chunk.memblock = pa_memblock_new_fixed(u->core->mempool, p, frames * u->frame_size, 1);
178 chunk.length = pa_memblock_get_length(chunk.memblock);
181 pa_sink_render_into_full(u->sink, &chunk);
183 /* FIXME: Maybe we can do something to keep this memory block
184 * a little bit longer around? */
185 pa_memblock_unref_fixed(chunk.memblock);
187 if ((err = snd_pcm_mmap_commit(u->pcm_handle, offset, frames)) < 0) {
190 pa_log_debug("snd_pcm_mmap_commit: Buffer underrun!");
194 if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) == 0)
200 pa_log("Failed to write data to DSP: %s", snd_strerror(err));
206 if (frames >= (snd_pcm_uframes_t) n)
209 /* pa_log("wrote %i samples", (int) frames); */
213 static int unix_write(struct userdata *u) {
214 snd_pcm_status_t *status;
217 snd_pcm_status_alloca(&status);
220 pa_sink_assert_ref(u->sink);
228 if ((err = snd_pcm_status(u->pcm_handle, status)) < 0) {
229 pa_log("Failed to query DSP status data: %s", snd_strerror(err));
233 if (snd_pcm_status_get_avail_max(status)*u->frame_size >= u->hwbuf_size)
234 pa_log_debug("Buffer underrun!");
236 l = snd_pcm_status_get_avail(status) * u->frame_size;
238 /* pa_log("%u bytes to write", l); */
243 if (u->memchunk.length <= 0)
244 pa_sink_render(u->sink, l, &u->memchunk);
246 pa_assert(u->memchunk.length > 0);
248 p = pa_memblock_acquire(u->memchunk.memblock);
249 t = snd_pcm_writei(u->pcm_handle, (const uint8_t*) p + u->memchunk.index, u->memchunk.length / u->frame_size);
250 pa_memblock_release(u->memchunk.memblock);
252 /* pa_log("wrote %i bytes of %u (%u)", t*u->frame_size, u->memchunk.length, l); */
258 if ((t = snd_pcm_recover(u->pcm_handle, t, 1)) == 0)
262 pa_log_debug("EAGAIN");
265 pa_log("Failed to write data to DSP: %s", snd_strerror(t));
270 u->memchunk.index += t * u->frame_size;
271 u->memchunk.length -= t * u->frame_size;
273 if (u->memchunk.length <= 0) {
274 pa_memblock_unref(u->memchunk.memblock);
275 pa_memchunk_reset(&u->memchunk);
280 if (t * u->frame_size >= (unsigned) l)
285 static pa_usec_t sink_get_latency(struct userdata *u) {
287 snd_pcm_status_t *status;
288 snd_pcm_sframes_t frames = 0;
291 snd_pcm_status_alloca(&status);
294 pa_assert(u->pcm_handle);
296 if ((err = snd_pcm_status(u->pcm_handle, status)) < 0)
297 pa_log("Failed to get delay: %s", snd_strerror(err));
299 frames = snd_pcm_status_get_delay(status);
302 r = pa_bytes_to_usec(frames * u->frame_size, &u->sink->sample_spec);
304 if (u->memchunk.memblock)
305 r += pa_bytes_to_usec(u->memchunk.length, &u->sink->sample_spec);
310 static int build_pollfd(struct userdata *u) {
312 struct pollfd *pollfd;
316 pa_assert(u->pcm_handle);
318 if ((n = snd_pcm_poll_descriptors_count(u->pcm_handle)) < 0) {
319 pa_log("snd_pcm_poll_descriptors_count() failed: %s", snd_strerror(n));
323 if (u->alsa_rtpoll_item)
324 pa_rtpoll_item_free(u->alsa_rtpoll_item);
326 u->alsa_rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, n);
327 pollfd = pa_rtpoll_item_get_pollfd(u->alsa_rtpoll_item, NULL);
329 if ((err = snd_pcm_poll_descriptors(u->pcm_handle, pollfd, n)) < 0) {
330 pa_log("snd_pcm_poll_descriptors() failed: %s", snd_strerror(err));
337 static int suspend(struct userdata *u) {
339 pa_assert(u->pcm_handle);
342 snd_pcm_drain(u->pcm_handle);
343 snd_pcm_close(u->pcm_handle);
344 u->pcm_handle = NULL;
346 if (u->alsa_rtpoll_item) {
347 pa_rtpoll_item_free(u->alsa_rtpoll_item);
348 u->alsa_rtpoll_item = NULL;
351 pa_log_info("Device suspended...");
356 static int unsuspend(struct userdata *u) {
360 snd_pcm_uframes_t period_size;
363 pa_assert(!u->pcm_handle);
365 pa_log_info("Trying resume...");
367 snd_config_update_free_global();
368 if ((err = snd_pcm_open(&u->pcm_handle, u->device_name, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK)) < 0) {
369 pa_log("Error opening PCM device %s: %s", u->device_name, snd_strerror(err));
373 ss = u->sink->sample_spec;
374 nfrags = u->nfragments;
375 period_size = u->fragment_size / u->frame_size;
378 if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, &b)) < 0) {
379 pa_log("Failed to set hardware parameters: %s", snd_strerror(err));
383 if (b != u->use_mmap) {
384 pa_log_warn("Resume failed, couldn't get original access mode.");
388 if (!pa_sample_spec_equal(&ss, &u->sink->sample_spec)) {
389 pa_log_warn("Resume failed, couldn't restore original sample settings.");
393 if (nfrags != u->nfragments || period_size*u->frame_size != u->fragment_size) {
394 pa_log_warn("Resume failed, couldn't restore original fragment settings.");
398 if ((err = pa_alsa_set_sw_params(u->pcm_handle)) < 0) {
399 pa_log("Failed to set software parameters: %s", snd_strerror(err));
403 if (build_pollfd(u) < 0)
406 /* FIXME: We need to reload the volume somehow */
410 pa_log_info("Resumed successfully...");
416 snd_pcm_close(u->pcm_handle);
417 u->pcm_handle = NULL;
423 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
424 struct userdata *u = PA_SINK(o)->userdata;
428 case PA_SINK_MESSAGE_GET_LATENCY: {
432 r = sink_get_latency(u);
434 *((pa_usec_t*) data) = r;
439 case PA_SINK_MESSAGE_SET_STATE:
441 switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
443 case PA_SINK_SUSPENDED:
444 pa_assert(PA_SINK_OPENED(u->sink->thread_info.state));
452 case PA_SINK_RUNNING:
454 if (u->sink->thread_info.state == PA_SINK_INIT) {
455 if (build_pollfd(u) < 0)
459 if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
460 if (unsuspend(u) < 0)
466 case PA_SINK_UNLINKED:
474 return pa_sink_process_msg(o, code, data, offset, chunk);
477 static int mixer_callback(snd_mixer_elem_t *elem, unsigned int mask) {
478 struct userdata *u = snd_mixer_elem_get_callback_private(elem);
481 pa_assert(u->mixer_handle);
483 if (mask == SND_CTL_EVENT_MASK_REMOVE)
486 if (mask & SND_CTL_EVENT_MASK_VALUE) {
487 pa_sink_get_volume(u->sink);
488 pa_sink_get_mute(u->sink);
494 static int sink_get_volume_cb(pa_sink *s) {
495 struct userdata *u = s->userdata;
500 pa_assert(u->mixer_elem);
502 for (i = 0; i < s->sample_spec.channels; i++) {
505 pa_assert(snd_mixer_selem_has_playback_channel(u->mixer_elem, i));
507 if ((err = snd_mixer_selem_get_playback_volume(u->mixer_elem, i, &vol)) < 0)
510 set_vol = (long) roundf(((float) s->volume.values[i] * (u->hw_volume_max - u->hw_volume_min)) / PA_VOLUME_NORM) + u->hw_volume_min;
512 /* Try to avoid superfluous volume changes */
514 s->volume.values[i] = (pa_volume_t) roundf(((float) (vol - u->hw_volume_min) * PA_VOLUME_NORM) / (u->hw_volume_max - u->hw_volume_min));
520 pa_log_error("Unable to read volume: %s", snd_strerror(err));
522 s->get_volume = NULL;
523 s->set_volume = NULL;
527 static int sink_set_volume_cb(pa_sink *s) {
528 struct userdata *u = s->userdata;
533 pa_assert(u->mixer_elem);
535 for (i = 0; i < s->sample_spec.channels; i++) {
539 pa_assert(snd_mixer_selem_has_playback_channel(u->mixer_elem, i));
541 vol = s->volume.values[i];
543 if (vol > PA_VOLUME_NORM)
544 vol = PA_VOLUME_NORM;
546 alsa_vol = (long) roundf(((float) vol * (u->hw_volume_max - u->hw_volume_min)) / PA_VOLUME_NORM) + u->hw_volume_min;
548 if ((err = snd_mixer_selem_set_playback_volume(u->mixer_elem, i, alsa_vol)) < 0)
555 pa_log_error("Unable to set volume: %s", snd_strerror(err));
557 s->get_volume = NULL;
558 s->set_volume = NULL;
562 static int sink_get_mute_cb(pa_sink *s) {
563 struct userdata *u = s->userdata;
567 pa_assert(u->mixer_elem);
569 if ((err = snd_mixer_selem_get_playback_switch(u->mixer_elem, 0, &sw)) < 0) {
570 pa_log_error("Unable to get switch: %s", snd_strerror(err));
582 static int sink_set_mute_cb(pa_sink *s) {
583 struct userdata *u = s->userdata;
587 pa_assert(u->mixer_elem);
589 if ((err = snd_mixer_selem_set_playback_switch_all(u->mixer_elem, !s->muted)) < 0) {
590 pa_log_error("Unable to set switch: %s", snd_strerror(err));
600 static void thread_func(void *userdata) {
601 struct userdata *u = userdata;
605 pa_log_debug("Thread starting up");
607 if (u->core->realtime_scheduling)
608 pa_make_realtime(u->core->realtime_priority);
610 pa_thread_mq_install(&u->thread_mq);
611 pa_rtpoll_install(u->rtpoll);
616 /* Render some data and write it to the dsp */
617 if (PA_SINK_OPENED(u->sink->thread_info.state)) {
621 if ((work_done = mmap_write(u)) < 0)
624 if ((work_done = unix_write(u)) < 0)
628 if (work_done && u->first) {
629 pa_log_info("Starting playback.");
630 snd_pcm_start(u->pcm_handle);
636 /* Hmm, nothing to do. Let's sleep */
637 if ((ret = pa_rtpoll_run(u->rtpoll, 1)) < 0)
643 /* Tell ALSA about this and process its response */
644 if (PA_SINK_OPENED(u->sink->thread_info.state)) {
645 struct pollfd *pollfd;
646 unsigned short revents = 0;
650 pollfd = pa_rtpoll_item_get_pollfd(u->alsa_rtpoll_item, &n);
652 if ((err = snd_pcm_poll_descriptors_revents(u->pcm_handle, pollfd, n, &revents)) < 0) {
653 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", snd_strerror(err));
657 if (revents & (POLLERR|POLLNVAL|POLLHUP)) {
659 if (revents & POLLERR)
660 pa_log_warn("Got POLLERR from ALSA");
661 if (revents & POLLNVAL)
662 pa_log_warn("Got POLLNVAL from ALSA");
663 if (revents & POLLHUP)
664 pa_log_warn("Got POLLHUP from ALSA");
666 /* Try to recover from this error */
668 switch (snd_pcm_state(u->pcm_handle)) {
670 case SND_PCM_STATE_XRUN:
671 if ((err = snd_pcm_recover(u->pcm_handle, -EPIPE, 1)) != 0) {
672 pa_log_warn("Could not recover from POLLERR|POLLNVAL|POLLHUP and XRUN: %s", snd_strerror(err));
677 case SND_PCM_STATE_SUSPENDED:
678 if ((err = snd_pcm_recover(u->pcm_handle, -ESTRPIPE, 1)) != 0) {
679 pa_log_warn("Could not recover from POLLERR|POLLNVAL|POLLHUP and SUSPENDED: %s", snd_strerror(err));
686 snd_pcm_drop(u->pcm_handle);
688 if ((err = snd_pcm_prepare(u->pcm_handle)) < 0) {
689 pa_log_warn("Could not recover from POLLERR|POLLNVAL|POLLHUP with snd_pcm_prepare(): %s", snd_strerror(err));
699 /* If this was no regular exit from the loop we have to continue
700 * processing messages until we received PA_MESSAGE_SHUTDOWN */
701 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
702 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
705 pa_log_debug("Thread shutting down");
708 int pa__init(pa_module*m) {
710 pa_modargs *ma = NULL;
711 struct userdata *u = NULL;
715 uint32_t nfrags, frag_size;
716 snd_pcm_uframes_t period_size;
718 snd_pcm_info_t *pcm_info = NULL;
722 char *name_buf = NULL;
726 snd_pcm_info_alloca(&pcm_info);
730 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
731 pa_log("Failed to parse module arguments");
735 ss = m->core->default_sample_spec;
736 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_ALSA) < 0) {
737 pa_log("Failed to parse sample specification and channel map");
741 frame_size = pa_frame_size(&ss);
743 nfrags = m->core->default_n_fragments;
744 frag_size = pa_usec_to_bytes(m->core->default_fragment_size_msec*1000, &ss);
746 frag_size = frame_size;
748 if (pa_modargs_get_value_u32(ma, "fragments", &nfrags) < 0 || pa_modargs_get_value_u32(ma, "fragment_size", &frag_size) < 0) {
749 pa_log("Failed to parse buffer metrics");
752 period_size = frag_size/frame_size;
754 if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
755 pa_log("Failed to parse mmap argument.");
759 u = pa_xnew0(struct userdata, 1);
763 u->use_mmap = use_mmap;
765 pa_thread_mq_init(&u->thread_mq, m->core->mainloop);
766 u->rtpoll = pa_rtpoll_new();
767 u->alsa_rtpoll_item = NULL;
768 pa_rtpoll_item_new_asyncmsgq(u->rtpoll, PA_RTPOLL_EARLY, u->thread_mq.inq);
770 snd_config_update_free_global();
772 dev = pa_xstrdup(pa_modargs_get_value(ma, "device", DEFAULT_DEVICE));
776 if ((err = snd_pcm_open(&u->pcm_handle, dev, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK)) < 0) {
777 pa_log("Error opening PCM device %s: %s", dev, snd_strerror(err));
783 if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, &b)) < 0) {
786 /* Hmm, some hw is very exotic, so we retry with plughw, if hw didn't work */
788 if (pa_startswith(dev, "hw:")) {
789 char *d = pa_sprintf_malloc("plughw:%s", dev+3);
790 pa_log_debug("Opening the device as '%s' didn't work, retrying with '%s'.", dev, d);
794 snd_pcm_close(u->pcm_handle);
795 u->pcm_handle = NULL;
800 pa_log("Failed to set hardware parameters: %s", snd_strerror(err));
808 u->device_name = dev;
810 if (use_mmap && !b) {
811 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
812 u->use_mmap = use_mmap = b;
816 pa_log_info("Successfully enabled mmap() mode.");
818 if ((err = snd_pcm_info(u->pcm_handle, pcm_info)) < 0) {
819 pa_log("Error fetching PCM info: %s", snd_strerror(err));
823 if ((err = pa_alsa_set_sw_params(u->pcm_handle)) < 0) {
824 pa_log("Failed to set software parameters: %s", snd_strerror(err));
828 /* ALSA might tweak the sample spec, so recalculate the frame size */
829 frame_size = pa_frame_size(&ss);
831 if (ss.channels != map.channels)
832 /* Seems ALSA didn't like the channel number, so let's fix the channel map */
833 pa_channel_map_init_auto(&map, ss.channels, PA_CHANNEL_MAP_ALSA);
835 if ((err = snd_mixer_open(&u->mixer_handle, 0)) < 0)
836 pa_log_warn("Error opening mixer: %s", snd_strerror(err));
839 if ((pa_alsa_prepare_mixer(u->mixer_handle, dev) < 0) ||
840 !(u->mixer_elem = pa_alsa_find_elem(u->mixer_handle, "Master", "PCM"))) {
842 snd_mixer_close(u->mixer_handle);
843 u->mixer_handle = NULL;
847 if ((name = pa_modargs_get_value(ma, "sink_name", NULL)))
850 name = name_buf = pa_sprintf_malloc("alsa_output.%s", dev);
854 u->sink = pa_sink_new(m->core, __FILE__, name, namereg_fail, &ss, &map);
858 pa_log("Failed to create sink object");
862 u->sink->parent.process_msg = sink_process_msg;
863 u->sink->userdata = u;
865 pa_sink_set_module(u->sink, m);
866 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
867 pa_sink_set_rtpoll(u->sink, u->rtpoll);
868 pa_sink_set_description(u->sink, t = pa_sprintf_malloc(
869 "ALSA PCM on %s (%s)%s",
871 snd_pcm_info_get_name(pcm_info),
872 use_mmap ? " via DMA" : ""));
875 u->sink->flags = PA_SINK_HARDWARE|PA_SINK_HW_VOLUME_CTRL|PA_SINK_LATENCY;
877 u->frame_size = frame_size;
878 u->fragment_size = frag_size = period_size * frame_size;
879 u->nfragments = nfrags;
880 u->hwbuf_size = u->fragment_size * nfrags;
882 pa_log_info("Using %u fragments of size %lu bytes.", nfrags, (long unsigned) u->fragment_size);
884 pa_memchunk_reset(&u->memchunk);
886 if (u->mixer_handle) {
887 /* Initialize mixer code */
889 pa_assert(u->mixer_elem);
891 if (snd_mixer_selem_has_playback_volume(u->mixer_elem)) {
894 for (i = 0; i < ss.channels; i++)
895 if (!snd_mixer_selem_has_playback_channel(u->mixer_elem, i))
898 if (i == ss.channels) {
899 pa_log_debug("ALSA device has separate volumes controls for all %u channels.", ss.channels);
900 u->sink->get_volume = sink_get_volume_cb;
901 u->sink->set_volume = sink_set_volume_cb;
902 snd_mixer_selem_get_playback_volume_range(u->mixer_elem, &u->hw_volume_min, &u->hw_volume_max);
904 pa_log_info("ALSA device lacks separate volumes controls for all %u channels (%u available), falling back to software volume control.", ss.channels, i+1);
907 if (snd_mixer_selem_has_playback_switch(u->mixer_elem)) {
908 u->sink->get_mute = sink_get_mute_cb;
909 u->sink->set_mute = sink_set_mute_cb;
912 u->mixer_fdl = pa_alsa_fdlist_new();
914 if (pa_alsa_fdlist_set_mixer(u->mixer_fdl, u->mixer_handle, m->core->mainloop) < 0) {
915 pa_log("failed to initialise file descriptor monitoring");
919 snd_mixer_elem_set_callback(u->mixer_elem, mixer_callback);
920 snd_mixer_elem_set_callback_private(u->mixer_elem, u);
924 if (!(u->thread = pa_thread_new(thread_func, u))) {
925 pa_log("Failed to create thread.");
929 /* Get initial mixer settings */
930 if (u->sink->get_volume)
931 u->sink->get_volume(u->sink);
932 if (u->sink->get_mute)
933 u->sink->get_mute(u->sink);
935 pa_sink_put(u->sink);
951 void pa__done(pa_module*m) {
956 if (!(u = m->userdata))
960 pa_sink_unlink(u->sink);
963 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
964 pa_thread_free(u->thread);
967 pa_thread_mq_done(&u->thread_mq);
970 pa_sink_unref(u->sink);
972 if (u->memchunk.memblock)
973 pa_memblock_unref(u->memchunk.memblock);
975 if (u->alsa_rtpoll_item)
976 pa_rtpoll_item_free(u->alsa_rtpoll_item);
979 pa_rtpoll_free(u->rtpoll);
982 pa_alsa_fdlist_free(u->mixer_fdl);
985 snd_mixer_close(u->mixer_handle);
988 snd_pcm_drop(u->pcm_handle);
989 snd_pcm_close(u->pcm_handle);
992 pa_xfree(u->device_name);
995 snd_config_update_free_global();