2 This file is part of PulseAudio.
4 Copyright 2004-2006 Lennart Poettering
5 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
7 PulseAudio is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published
9 by the Free Software Foundation; either version 2.1 of the License,
10 or (at your option) any later version.
12 PulseAudio is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
29 #include <pulse/introspect.h>
30 #include <pulse/format.h>
31 #include <pulse/utf8.h>
32 #include <pulse/xmalloc.h>
33 #include <pulse/timeval.h>
34 #include <pulse/util.h>
35 #include <pulse/rtclock.h>
36 #include <pulse/internal.h>
38 #include <pulsecore/i18n.h>
39 #include <pulsecore/sink-input.h>
40 #include <pulsecore/namereg.h>
41 #include <pulsecore/core-util.h>
42 #include <pulsecore/sample-util.h>
43 #include <pulsecore/mix.h>
44 #include <pulsecore/core-subscribe.h>
45 #include <pulsecore/log.h>
46 #include <pulsecore/macro.h>
47 #include <pulsecore/play-memblockq.h>
48 #include <pulsecore/flist.h>
52 #define MAX_MIX_CHANNELS 32
53 #define MIX_BUFFER_LENGTH (PA_PAGE_SIZE)
54 #define ABSOLUTE_MIN_LATENCY (500)
55 #define ABSOLUTE_MAX_LATENCY (10*PA_USEC_PER_SEC)
56 #define DEFAULT_FIXED_LATENCY (250*PA_USEC_PER_MSEC)
58 PA_DEFINE_PUBLIC_CLASS(pa_sink, pa_msgobject);
60 struct pa_sink_volume_change {
64 PA_LLIST_FIELDS(pa_sink_volume_change);
67 struct sink_message_set_port {
72 static void sink_free(pa_object *s);
74 static void pa_sink_volume_change_push(pa_sink *s);
75 static void pa_sink_volume_change_flush(pa_sink *s);
76 static void pa_sink_volume_change_rewind(pa_sink *s, size_t nbytes);
78 pa_sink_new_data* pa_sink_new_data_init(pa_sink_new_data *data) {
82 data->proplist = pa_proplist_new();
83 data->ports = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL, (pa_free_cb_t) pa_device_port_unref);
88 void pa_sink_new_data_set_name(pa_sink_new_data *data, const char *name) {
92 data->name = pa_xstrdup(name);
95 void pa_sink_new_data_set_sample_spec(pa_sink_new_data *data, const pa_sample_spec *spec) {
98 if ((data->sample_spec_is_set = !!spec))
99 data->sample_spec = *spec;
102 void pa_sink_new_data_set_channel_map(pa_sink_new_data *data, const pa_channel_map *map) {
105 if ((data->channel_map_is_set = !!map))
106 data->channel_map = *map;
109 void pa_sink_new_data_set_alternate_sample_rate(pa_sink_new_data *data, const uint32_t alternate_sample_rate) {
112 data->alternate_sample_rate_is_set = true;
113 data->alternate_sample_rate = alternate_sample_rate;
116 void pa_sink_new_data_set_volume(pa_sink_new_data *data, const pa_cvolume *volume) {
119 if ((data->volume_is_set = !!volume))
120 data->volume = *volume;
123 void pa_sink_new_data_set_muted(pa_sink_new_data *data, bool mute) {
126 data->muted_is_set = true;
130 void pa_sink_new_data_set_port(pa_sink_new_data *data, const char *port) {
133 pa_xfree(data->active_port);
134 data->active_port = pa_xstrdup(port);
137 void pa_sink_new_data_done(pa_sink_new_data *data) {
140 pa_proplist_free(data->proplist);
143 pa_hashmap_free(data->ports);
145 pa_xfree(data->name);
146 pa_xfree(data->active_port);
149 /* Called from main context */
150 static void reset_callbacks(pa_sink *s) {
154 s->get_volume = NULL;
155 s->set_volume = NULL;
156 s->write_volume = NULL;
159 s->request_rewind = NULL;
160 s->update_requested_latency = NULL;
162 s->get_formats = NULL;
163 s->set_formats = NULL;
164 s->update_rate = NULL;
167 /* Called from main context */
168 pa_sink* pa_sink_new(
170 pa_sink_new_data *data,
171 pa_sink_flags_t flags) {
175 char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
176 pa_source_new_data source_data;
182 pa_assert(data->name);
183 pa_assert_ctl_context();
185 s = pa_msgobject_new(pa_sink);
187 if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SINK, s, data->namereg_fail))) {
188 pa_log_debug("Failed to register name %s.", data->name);
193 pa_sink_new_data_set_name(data, name);
195 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_NEW], data) < 0) {
197 pa_namereg_unregister(core, name);
201 /* FIXME, need to free s here on failure */
203 pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
204 pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
206 pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
208 if (!data->channel_map_is_set)
209 pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
211 pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
212 pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
214 /* FIXME: There should probably be a general function for checking whether
215 * the sink volume is allowed to be set, like there is for sink inputs. */
216 pa_assert(!data->volume_is_set || !(flags & PA_SINK_SHARE_VOLUME_WITH_MASTER));
218 if (!data->volume_is_set) {
219 pa_cvolume_reset(&data->volume, data->sample_spec.channels);
220 data->save_volume = false;
223 pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
224 pa_return_null_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec));
226 if (!data->muted_is_set)
230 pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
232 pa_device_init_description(data->proplist, data->card);
233 pa_device_init_icon(data->proplist, true);
234 pa_device_init_intended_roles(data->proplist);
236 if (!data->active_port) {
237 pa_device_port *p = pa_device_port_find_best(data->ports);
239 pa_sink_new_data_set_port(data, p->name);
242 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_FIXATE], data) < 0) {
244 pa_namereg_unregister(core, name);
248 s->parent.parent.free = sink_free;
249 s->parent.process_msg = pa_sink_process_msg;
252 s->state = PA_SINK_INIT;
255 s->suspend_cause = data->suspend_cause;
256 pa_sink_set_mixer_dirty(s, false);
257 s->name = pa_xstrdup(name);
258 s->proplist = pa_proplist_copy(data->proplist);
259 s->driver = pa_xstrdup(pa_path_get_filename(data->driver));
260 s->module = data->module;
261 s->card = data->card;
263 s->priority = pa_device_init_priority(s->proplist);
265 s->sample_spec = data->sample_spec;
266 s->channel_map = data->channel_map;
267 s->default_sample_rate = s->sample_spec.rate;
269 if (data->alternate_sample_rate_is_set)
270 s->alternate_sample_rate = data->alternate_sample_rate;
272 s->alternate_sample_rate = s->core->alternate_sample_rate;
274 if (s->sample_spec.rate == s->alternate_sample_rate) {
275 pa_log_warn("Default and alternate sample rates are the same.");
276 s->alternate_sample_rate = 0;
279 s->inputs = pa_idxset_new(NULL, NULL);
281 s->input_to_master = NULL;
283 s->reference_volume = s->real_volume = data->volume;
284 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
285 s->base_volume = PA_VOLUME_NORM;
286 s->n_volume_steps = PA_VOLUME_NORM+1;
287 s->muted = data->muted;
288 s->refresh_volume = s->refresh_muted = false;
295 /* As a minor optimization we just steal the list instead of
297 s->ports = data->ports;
300 s->active_port = NULL;
301 s->save_port = false;
303 if (data->active_port)
304 if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
305 s->save_port = data->save_port;
307 /* Hopefully the active port has already been assigned in the previous call
308 to pa_device_port_find_best, but better safe than sorry */
310 s->active_port = pa_device_port_find_best(s->ports);
313 s->latency_offset = s->active_port->latency_offset;
315 s->latency_offset = 0;
317 s->save_volume = data->save_volume;
318 s->save_muted = data->save_muted;
320 pa_silence_memchunk_get(
321 &core->silence_cache,
327 s->thread_info.rtpoll = NULL;
328 s->thread_info.inputs = pa_hashmap_new_full(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func, NULL,
329 (pa_free_cb_t) pa_sink_input_unref);
330 s->thread_info.soft_volume = s->soft_volume;
331 s->thread_info.soft_muted = s->muted;
332 s->thread_info.state = s->state;
333 s->thread_info.rewind_nbytes = 0;
334 s->thread_info.rewind_requested = false;
335 s->thread_info.max_rewind = 0;
336 s->thread_info.max_request = 0;
337 s->thread_info.requested_latency_valid = false;
338 s->thread_info.requested_latency = 0;
339 s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
340 s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
341 s->thread_info.fixed_latency = flags & PA_SINK_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
343 PA_LLIST_HEAD_INIT(pa_sink_volume_change, s->thread_info.volume_changes);
344 s->thread_info.volume_changes_tail = NULL;
345 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
346 s->thread_info.volume_change_safety_margin = core->deferred_volume_safety_margin_usec;
347 s->thread_info.volume_change_extra_delay = core->deferred_volume_extra_delay_usec;
348 s->thread_info.latency_offset = s->latency_offset;
350 /* FIXME: This should probably be moved to pa_sink_put() */
351 pa_assert_se(pa_idxset_put(core->sinks, s, &s->index) >= 0);
354 pa_assert_se(pa_idxset_put(s->card->sinks, s, NULL) >= 0);
356 pt = pa_proplist_to_string_sep(s->proplist, "\n ");
357 pa_log_info("Created sink %u \"%s\" with sample spec %s and channel map %s\n %s",
360 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
361 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
365 pa_source_new_data_init(&source_data);
366 pa_source_new_data_set_sample_spec(&source_data, &s->sample_spec);
367 pa_source_new_data_set_channel_map(&source_data, &s->channel_map);
368 pa_source_new_data_set_alternate_sample_rate(&source_data, s->alternate_sample_rate);
369 source_data.name = pa_sprintf_malloc("%s.monitor", name);
370 source_data.driver = data->driver;
371 source_data.module = data->module;
372 source_data.card = data->card;
374 dn = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
375 pa_proplist_setf(source_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Monitor of %s", dn ? dn : s->name);
376 pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_CLASS, "monitor");
378 s->monitor_source = pa_source_new(core, &source_data,
379 ((flags & PA_SINK_LATENCY) ? PA_SOURCE_LATENCY : 0) |
380 ((flags & PA_SINK_DYNAMIC_LATENCY) ? PA_SOURCE_DYNAMIC_LATENCY : 0));
382 pa_source_new_data_done(&source_data);
384 if (!s->monitor_source) {
390 s->monitor_source->monitor_of = s;
392 pa_source_set_latency_range(s->monitor_source, s->thread_info.min_latency, s->thread_info.max_latency);
393 pa_source_set_fixed_latency(s->monitor_source, s->thread_info.fixed_latency);
394 pa_source_set_max_rewind(s->monitor_source, s->thread_info.max_rewind);
399 /* Called from main context */
400 static int sink_set_state(pa_sink *s, pa_sink_state_t state) {
403 pa_sink_state_t original_state;
406 pa_assert_ctl_context();
408 if (s->state == state)
411 original_state = s->state;
414 (original_state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(state)) ||
415 (PA_SINK_IS_OPENED(original_state) && state == PA_SINK_SUSPENDED);
418 if ((ret = s->set_state(s, state)) < 0)
422 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
425 s->set_state(s, original_state);
432 if (state != PA_SINK_UNLINKED) { /* if we enter UNLINKED state pa_sink_unlink() will fire the appropriate events */
433 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_STATE_CHANGED], s);
434 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
437 if (suspend_change) {
441 /* We're suspending or resuming, tell everyone about it */
443 PA_IDXSET_FOREACH(i, s->inputs, idx)
444 if (s->state == PA_SINK_SUSPENDED &&
445 (i->flags & PA_SINK_INPUT_KILL_ON_SUSPEND))
446 pa_sink_input_kill(i);
448 i->suspend(i, state == PA_SINK_SUSPENDED);
450 if (s->monitor_source)
451 pa_source_sync_suspend(s->monitor_source);
457 void pa_sink_set_get_volume_callback(pa_sink *s, pa_sink_cb_t cb) {
463 void pa_sink_set_set_volume_callback(pa_sink *s, pa_sink_cb_t cb) {
464 pa_sink_flags_t flags;
467 pa_assert(!s->write_volume || cb);
471 /* Save the current flags so we can tell if they've changed */
475 /* The sink implementor is responsible for setting decibel volume support */
476 s->flags |= PA_SINK_HW_VOLUME_CTRL;
478 s->flags &= ~PA_SINK_HW_VOLUME_CTRL;
479 /* See note below in pa_sink_put() about volume sharing and decibel volumes */
480 pa_sink_enable_decibel_volume(s, !(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER));
483 /* If the flags have changed after init, let any clients know via a change event */
484 if (s->state != PA_SINK_INIT && flags != s->flags)
485 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
488 void pa_sink_set_write_volume_callback(pa_sink *s, pa_sink_cb_t cb) {
489 pa_sink_flags_t flags;
492 pa_assert(!cb || s->set_volume);
494 s->write_volume = cb;
496 /* Save the current flags so we can tell if they've changed */
500 s->flags |= PA_SINK_DEFERRED_VOLUME;
502 s->flags &= ~PA_SINK_DEFERRED_VOLUME;
504 /* If the flags have changed after init, let any clients know via a change event */
505 if (s->state != PA_SINK_INIT && flags != s->flags)
506 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
509 void pa_sink_set_get_mute_callback(pa_sink *s, pa_sink_get_mute_cb_t cb) {
515 void pa_sink_set_set_mute_callback(pa_sink *s, pa_sink_cb_t cb) {
516 pa_sink_flags_t flags;
522 /* Save the current flags so we can tell if they've changed */
526 s->flags |= PA_SINK_HW_MUTE_CTRL;
528 s->flags &= ~PA_SINK_HW_MUTE_CTRL;
530 /* If the flags have changed after init, let any clients know via a change event */
531 if (s->state != PA_SINK_INIT && flags != s->flags)
532 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
535 static void enable_flat_volume(pa_sink *s, bool enable) {
536 pa_sink_flags_t flags;
540 /* Always follow the overall user preference here */
541 enable = enable && s->core->flat_volumes;
543 /* Save the current flags so we can tell if they've changed */
547 s->flags |= PA_SINK_FLAT_VOLUME;
549 s->flags &= ~PA_SINK_FLAT_VOLUME;
551 /* If the flags have changed after init, let any clients know via a change event */
552 if (s->state != PA_SINK_INIT && flags != s->flags)
553 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
556 void pa_sink_enable_decibel_volume(pa_sink *s, bool enable) {
557 pa_sink_flags_t flags;
561 /* Save the current flags so we can tell if they've changed */
565 s->flags |= PA_SINK_DECIBEL_VOLUME;
566 enable_flat_volume(s, true);
568 s->flags &= ~PA_SINK_DECIBEL_VOLUME;
569 enable_flat_volume(s, false);
572 /* If the flags have changed after init, let any clients know via a change event */
573 if (s->state != PA_SINK_INIT && flags != s->flags)
574 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
577 /* Called from main context */
578 void pa_sink_put(pa_sink* s) {
579 pa_sink_assert_ref(s);
580 pa_assert_ctl_context();
582 pa_assert(s->state == PA_SINK_INIT);
583 pa_assert(!(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER) || pa_sink_is_filter(s));
585 /* The following fields must be initialized properly when calling _put() */
586 pa_assert(s->asyncmsgq);
587 pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
589 /* Generally, flags should be initialized via pa_sink_new(). As a
590 * special exception we allow some volume related flags to be set
591 * between _new() and _put() by the callback setter functions above.
593 * Thus we implement a couple safeguards here which ensure the above
594 * setters were used (or at least the implementor made manual changes
595 * in a compatible way).
597 * Note: All of these flags set here can change over the life time
599 pa_assert(!(s->flags & PA_SINK_HW_VOLUME_CTRL) || s->set_volume);
600 pa_assert(!(s->flags & PA_SINK_DEFERRED_VOLUME) || s->write_volume);
601 pa_assert(!(s->flags & PA_SINK_HW_MUTE_CTRL) || s->set_mute);
603 /* XXX: Currently decibel volume is disabled for all sinks that use volume
604 * sharing. When the master sink supports decibel volume, it would be good
605 * to have the flag also in the filter sink, but currently we don't do that
606 * so that the flags of the filter sink never change when it's moved from
607 * a master sink to another. One solution for this problem would be to
608 * remove user-visible volume altogether from filter sinks when volume
609 * sharing is used, but the current approach was easier to implement... */
610 /* We always support decibel volumes in software, otherwise we leave it to
611 * the sink implementor to set this flag as needed.
613 * Note: This flag can also change over the life time of the sink. */
614 if (!(s->flags & PA_SINK_HW_VOLUME_CTRL) && !(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
615 pa_sink_enable_decibel_volume(s, true);
616 s->soft_volume = s->reference_volume;
619 /* If the sink implementor support DB volumes by itself, we should always
620 * try and enable flat volumes too */
621 if ((s->flags & PA_SINK_DECIBEL_VOLUME))
622 enable_flat_volume(s, true);
624 if (s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER) {
625 pa_sink *root_sink = pa_sink_get_master(s);
627 pa_assert(root_sink);
629 s->reference_volume = root_sink->reference_volume;
630 pa_cvolume_remap(&s->reference_volume, &root_sink->channel_map, &s->channel_map);
632 s->real_volume = root_sink->real_volume;
633 pa_cvolume_remap(&s->real_volume, &root_sink->channel_map, &s->channel_map);
635 /* We assume that if the sink implementor changed the default
636 * volume he did so in real_volume, because that is the usual
637 * place where he is supposed to place his changes. */
638 s->reference_volume = s->real_volume;
640 s->thread_info.soft_volume = s->soft_volume;
641 s->thread_info.soft_muted = s->muted;
642 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
644 pa_assert((s->flags & PA_SINK_HW_VOLUME_CTRL)
645 || (s->base_volume == PA_VOLUME_NORM
646 && ((s->flags & PA_SINK_DECIBEL_VOLUME || (s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)))));
647 pa_assert(!(s->flags & PA_SINK_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
648 pa_assert(!(s->flags & PA_SINK_DYNAMIC_LATENCY) == !(s->thread_info.fixed_latency == 0));
649 pa_assert(!(s->flags & PA_SINK_LATENCY) == !(s->monitor_source->flags & PA_SOURCE_LATENCY));
650 pa_assert(!(s->flags & PA_SINK_DYNAMIC_LATENCY) == !(s->monitor_source->flags & PA_SOURCE_DYNAMIC_LATENCY));
652 pa_assert(s->monitor_source->thread_info.fixed_latency == s->thread_info.fixed_latency);
653 pa_assert(s->monitor_source->thread_info.min_latency == s->thread_info.min_latency);
654 pa_assert(s->monitor_source->thread_info.max_latency == s->thread_info.max_latency);
656 if (s->suspend_cause)
657 pa_assert_se(sink_set_state(s, PA_SINK_SUSPENDED) == 0);
659 pa_assert_se(sink_set_state(s, PA_SINK_IDLE) == 0);
661 pa_source_put(s->monitor_source);
663 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_NEW, s->index);
664 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PUT], s);
667 /* Called from main context */
668 void pa_sink_unlink(pa_sink* s) {
670 pa_sink_input *i, PA_UNUSED *j = NULL;
673 pa_assert_ctl_context();
675 /* Please note that pa_sink_unlink() does more than simply
676 * reversing pa_sink_put(). It also undoes the registrations
677 * already done in pa_sink_new()! */
679 /* All operations here shall be idempotent, i.e. pa_sink_unlink()
680 * may be called multiple times on the same sink without bad
683 linked = PA_SINK_IS_LINKED(s->state);
686 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_UNLINK], s);
688 if (s->state != PA_SINK_UNLINKED)
689 pa_namereg_unregister(s->core, s->name);
690 pa_idxset_remove_by_data(s->core->sinks, s, NULL);
693 pa_idxset_remove_by_data(s->card->sinks, s, NULL);
695 while ((i = pa_idxset_first(s->inputs, NULL))) {
697 pa_sink_input_kill(i);
702 sink_set_state(s, PA_SINK_UNLINKED);
704 s->state = PA_SINK_UNLINKED;
708 if (s->monitor_source)
709 pa_source_unlink(s->monitor_source);
712 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
713 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_UNLINK_POST], s);
717 /* Called from main context */
718 static void sink_free(pa_object *o) {
719 pa_sink *s = PA_SINK(o);
722 pa_assert_ctl_context();
723 pa_assert(pa_sink_refcnt(s) == 0);
725 if (PA_SINK_IS_LINKED(s->state))
728 pa_log_info("Freeing sink %u \"%s\"", s->index, s->name);
730 pa_sink_volume_change_flush(s);
732 if (s->monitor_source) {
733 pa_source_unref(s->monitor_source);
734 s->monitor_source = NULL;
737 pa_idxset_free(s->inputs, NULL);
738 pa_hashmap_free(s->thread_info.inputs);
740 if (s->silence.memblock)
741 pa_memblock_unref(s->silence.memblock);
747 pa_proplist_free(s->proplist);
750 pa_hashmap_free(s->ports);
755 /* Called from main context, and not while the IO thread is active, please */
756 void pa_sink_set_asyncmsgq(pa_sink *s, pa_asyncmsgq *q) {
757 pa_sink_assert_ref(s);
758 pa_assert_ctl_context();
762 if (s->monitor_source)
763 pa_source_set_asyncmsgq(s->monitor_source, q);
766 /* Called from main context, and not while the IO thread is active, please */
767 void pa_sink_update_flags(pa_sink *s, pa_sink_flags_t mask, pa_sink_flags_t value) {
768 pa_sink_flags_t old_flags;
769 pa_sink_input *input;
772 pa_sink_assert_ref(s);
773 pa_assert_ctl_context();
775 /* For now, allow only a minimal set of flags to be changed. */
776 pa_assert((mask & ~(PA_SINK_DYNAMIC_LATENCY|PA_SINK_LATENCY)) == 0);
778 old_flags = s->flags;
779 s->flags = (s->flags & ~mask) | (value & mask);
781 if (s->flags == old_flags)
784 if ((s->flags & PA_SINK_LATENCY) != (old_flags & PA_SINK_LATENCY))
785 pa_log_debug("Sink %s: LATENCY flag %s.", s->name, (s->flags & PA_SINK_LATENCY) ? "enabled" : "disabled");
787 if ((s->flags & PA_SINK_DYNAMIC_LATENCY) != (old_flags & PA_SINK_DYNAMIC_LATENCY))
788 pa_log_debug("Sink %s: DYNAMIC_LATENCY flag %s.",
789 s->name, (s->flags & PA_SINK_DYNAMIC_LATENCY) ? "enabled" : "disabled");
791 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
792 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_FLAGS_CHANGED], s);
794 if (s->monitor_source)
795 pa_source_update_flags(s->monitor_source,
796 ((mask & PA_SINK_LATENCY) ? PA_SOURCE_LATENCY : 0) |
797 ((mask & PA_SINK_DYNAMIC_LATENCY) ? PA_SOURCE_DYNAMIC_LATENCY : 0),
798 ((value & PA_SINK_LATENCY) ? PA_SOURCE_LATENCY : 0) |
799 ((value & PA_SINK_DYNAMIC_LATENCY) ? PA_SOURCE_DYNAMIC_LATENCY : 0));
801 PA_IDXSET_FOREACH(input, s->inputs, idx) {
802 if (input->origin_sink)
803 pa_sink_update_flags(input->origin_sink, mask, value);
807 /* Called from IO context, or before _put() from main context */
808 void pa_sink_set_rtpoll(pa_sink *s, pa_rtpoll *p) {
809 pa_sink_assert_ref(s);
810 pa_sink_assert_io_context(s);
812 s->thread_info.rtpoll = p;
814 if (s->monitor_source)
815 pa_source_set_rtpoll(s->monitor_source, p);
818 /* Called from main context */
819 int pa_sink_update_status(pa_sink*s) {
820 pa_sink_assert_ref(s);
821 pa_assert_ctl_context();
822 pa_assert(PA_SINK_IS_LINKED(s->state));
824 if (s->state == PA_SINK_SUSPENDED)
827 return sink_set_state(s, pa_sink_used_by(s) ? PA_SINK_RUNNING : PA_SINK_IDLE);
830 /* Called from any context - must be threadsafe */
831 void pa_sink_set_mixer_dirty(pa_sink *s, bool is_dirty) {
832 pa_atomic_store(&s->mixer_dirty, is_dirty ? 1 : 0);
835 /* Called from main context */
836 int pa_sink_suspend(pa_sink *s, bool suspend, pa_suspend_cause_t cause) {
837 pa_sink_assert_ref(s);
838 pa_assert_ctl_context();
839 pa_assert(PA_SINK_IS_LINKED(s->state));
840 pa_assert(cause != 0);
843 s->suspend_cause |= cause;
844 s->monitor_source->suspend_cause |= cause;
846 s->suspend_cause &= ~cause;
847 s->monitor_source->suspend_cause &= ~cause;
850 if (!(s->suspend_cause & PA_SUSPEND_SESSION) && (pa_atomic_load(&s->mixer_dirty) != 0)) {
851 /* This might look racy but isn't: If somebody sets mixer_dirty exactly here,
852 it'll be handled just fine. */
853 pa_sink_set_mixer_dirty(s, false);
854 pa_log_debug("Mixer is now accessible. Updating alsa mixer settings.");
855 if (s->active_port && s->set_port) {
856 if (s->flags & PA_SINK_DEFERRED_VOLUME) {
857 struct sink_message_set_port msg = { .port = s->active_port, .ret = 0 };
858 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
861 s->set_port(s, s->active_port);
871 if ((pa_sink_get_state(s) == PA_SINK_SUSPENDED) == !!s->suspend_cause)
874 pa_log_debug("Suspend cause of sink %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
876 if (s->suspend_cause)
877 return sink_set_state(s, PA_SINK_SUSPENDED);
879 return sink_set_state(s, pa_sink_used_by(s) ? PA_SINK_RUNNING : PA_SINK_IDLE);
882 /* Called from main context */
883 pa_queue *pa_sink_move_all_start(pa_sink *s, pa_queue *q) {
884 pa_sink_input *i, *n;
887 pa_sink_assert_ref(s);
888 pa_assert_ctl_context();
889 pa_assert(PA_SINK_IS_LINKED(s->state));
894 for (i = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); i; i = n) {
895 n = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx));
897 pa_sink_input_ref(i);
899 if (pa_sink_input_start_move(i) >= 0)
902 pa_sink_input_unref(i);
908 /* Called from main context */
909 void pa_sink_move_all_finish(pa_sink *s, pa_queue *q, bool save) {
912 pa_sink_assert_ref(s);
913 pa_assert_ctl_context();
914 pa_assert(PA_SINK_IS_LINKED(s->state));
917 while ((i = PA_SINK_INPUT(pa_queue_pop(q)))) {
918 if (pa_sink_input_finish_move(i, s, save) < 0)
919 pa_sink_input_fail_move(i);
921 pa_sink_input_unref(i);
924 pa_queue_free(q, NULL);
927 /* Called from main context */
928 void pa_sink_move_all_fail(pa_queue *q) {
931 pa_assert_ctl_context();
934 while ((i = PA_SINK_INPUT(pa_queue_pop(q)))) {
935 pa_sink_input_fail_move(i);
936 pa_sink_input_unref(i);
939 pa_queue_free(q, NULL);
942 /* Called from IO thread context */
943 size_t pa_sink_process_input_underruns(pa_sink *s, size_t left_to_play) {
948 pa_sink_assert_ref(s);
949 pa_sink_assert_io_context(s);
951 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state) {
952 size_t uf = i->thread_info.underrun_for_sink;
954 /* Propagate down the filter tree */
955 if (i->origin_sink) {
956 size_t filter_result, left_to_play_origin;
958 /* The recursive call works in the origin sink domain ... */
959 left_to_play_origin = pa_convert_size(left_to_play, &i->sink->sample_spec, &i->origin_sink->sample_spec);
961 /* .. and returns the time to sleep before waking up. We need the
962 * underrun duration for comparisons, so we undo the subtraction on
963 * the return value... */
964 filter_result = left_to_play_origin - pa_sink_process_input_underruns(i->origin_sink, left_to_play_origin);
966 /* ... and convert it back to the master sink domain */
967 filter_result = pa_convert_size(filter_result, &i->origin_sink->sample_spec, &i->sink->sample_spec);
969 /* Remember the longest underrun so far */
970 if (filter_result > result)
971 result = filter_result;
975 /* No underrun here, move on */
977 } else if (uf >= left_to_play) {
978 /* The sink has possibly consumed all the data the sink input provided */
979 pa_sink_input_process_underrun(i);
980 } else if (uf > result) {
981 /* Remember the longest underrun so far */
987 pa_log_debug("%s: Found underrun %ld bytes ago (%ld bytes ahead in playback buffer)", s->name,
988 (long) result, (long) left_to_play - result);
989 return left_to_play - result;
992 /* Called from IO thread context */
993 void pa_sink_process_rewind(pa_sink *s, size_t nbytes) {
997 pa_sink_assert_ref(s);
998 pa_sink_assert_io_context(s);
999 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1001 /* If nobody requested this and this is actually no real rewind
1002 * then we can short cut this. Please note that this means that
1003 * not all rewind requests triggered upstream will always be
1004 * translated in actual requests! */
1005 if (!s->thread_info.rewind_requested && nbytes <= 0)
1008 s->thread_info.rewind_nbytes = 0;
1009 s->thread_info.rewind_requested = false;
1012 pa_log_debug("Processing rewind...");
1013 if (s->flags & PA_SINK_DEFERRED_VOLUME)
1014 pa_sink_volume_change_rewind(s, nbytes);
1017 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state) {
1018 pa_sink_input_assert_ref(i);
1019 pa_sink_input_process_rewind(i, nbytes);
1023 if (s->monitor_source && PA_SOURCE_IS_LINKED(s->monitor_source->thread_info.state))
1024 pa_source_process_rewind(s->monitor_source, nbytes);
1028 /* Called from IO thread context */
1029 static unsigned fill_mix_info(pa_sink *s, size_t *length, pa_mix_info *info, unsigned maxinfo) {
1033 size_t mixlength = *length;
1035 pa_sink_assert_ref(s);
1036 pa_sink_assert_io_context(s);
1039 while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)) && maxinfo > 0) {
1040 pa_sink_input_assert_ref(i);
1042 pa_sink_input_peek(i, *length, &info->chunk, &info->volume);
1044 if (mixlength == 0 || info->chunk.length < mixlength)
1045 mixlength = info->chunk.length;
1047 if (pa_memblock_is_silence(info->chunk.memblock)) {
1048 pa_memblock_unref(info->chunk.memblock);
1052 info->userdata = pa_sink_input_ref(i);
1054 pa_assert(info->chunk.memblock);
1055 pa_assert(info->chunk.length > 0);
1063 *length = mixlength;
1068 /* Called from IO thread context */
1069 static void inputs_drop(pa_sink *s, pa_mix_info *info, unsigned n, pa_memchunk *result) {
1073 unsigned n_unreffed = 0;
1075 pa_sink_assert_ref(s);
1076 pa_sink_assert_io_context(s);
1078 pa_assert(result->memblock);
1079 pa_assert(result->length > 0);
1081 /* We optimize for the case where the order of the inputs has not changed */
1083 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state) {
1085 pa_mix_info* m = NULL;
1087 pa_sink_input_assert_ref(i);
1089 /* Let's try to find the matching entry info the pa_mix_info array */
1090 for (j = 0; j < n; j ++) {
1092 if (info[p].userdata == i) {
1102 /* Drop read data */
1103 pa_sink_input_drop(i, result->length);
1105 if (s->monitor_source && PA_SOURCE_IS_LINKED(s->monitor_source->thread_info.state)) {
1107 if (pa_hashmap_size(i->thread_info.direct_outputs) > 0) {
1108 void *ostate = NULL;
1109 pa_source_output *o;
1112 if (m && m->chunk.memblock) {
1114 pa_memblock_ref(c.memblock);
1115 pa_assert(result->length <= c.length);
1116 c.length = result->length;
1118 pa_memchunk_make_writable(&c, 0);
1119 pa_volume_memchunk(&c, &s->sample_spec, &m->volume);
1122 pa_memblock_ref(c.memblock);
1123 pa_assert(result->length <= c.length);
1124 c.length = result->length;
1127 while ((o = pa_hashmap_iterate(i->thread_info.direct_outputs, &ostate, NULL))) {
1128 pa_source_output_assert_ref(o);
1129 pa_assert(o->direct_on_input == i);
1130 pa_source_post_direct(s->monitor_source, o, &c);
1133 pa_memblock_unref(c.memblock);
1138 if (m->chunk.memblock) {
1139 pa_memblock_unref(m->chunk.memblock);
1140 pa_memchunk_reset(&m->chunk);
1143 pa_sink_input_unref(m->userdata);
1150 /* Now drop references to entries that are included in the
1151 * pa_mix_info array but don't exist anymore */
1153 if (n_unreffed < n) {
1154 for (; n > 0; info++, n--) {
1156 pa_sink_input_unref(info->userdata);
1157 if (info->chunk.memblock)
1158 pa_memblock_unref(info->chunk.memblock);
1162 if (s->monitor_source && PA_SOURCE_IS_LINKED(s->monitor_source->thread_info.state))
1163 pa_source_post(s->monitor_source, result);
1166 /* Called from IO thread context */
1167 void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result) {
1168 pa_mix_info info[MAX_MIX_CHANNELS];
1170 size_t block_size_max;
1172 pa_sink_assert_ref(s);
1173 pa_sink_assert_io_context(s);
1174 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1175 pa_assert(pa_frame_aligned(length, &s->sample_spec));
1178 pa_assert(!s->thread_info.rewind_requested);
1179 pa_assert(s->thread_info.rewind_nbytes == 0);
1181 if (s->thread_info.state == PA_SINK_SUSPENDED) {
1182 result->memblock = pa_memblock_ref(s->silence.memblock);
1183 result->index = s->silence.index;
1184 result->length = PA_MIN(s->silence.length, length);
1191 length = pa_frame_align(MIX_BUFFER_LENGTH, &s->sample_spec);
1193 block_size_max = pa_mempool_block_size_max(s->core->mempool);
1194 if (length > block_size_max)
1195 length = pa_frame_align(block_size_max, &s->sample_spec);
1197 pa_assert(length > 0);
1199 n = fill_mix_info(s, &length, info, MAX_MIX_CHANNELS);
1203 *result = s->silence;
1204 pa_memblock_ref(result->memblock);
1206 if (result->length > length)
1207 result->length = length;
1209 } else if (n == 1) {
1212 *result = info[0].chunk;
1213 pa_memblock_ref(result->memblock);
1215 if (result->length > length)
1216 result->length = length;
1218 pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume);
1220 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&volume)) {
1221 pa_memblock_unref(result->memblock);
1222 pa_silence_memchunk_get(&s->core->silence_cache,
1227 } else if (!pa_cvolume_is_norm(&volume)) {
1228 pa_memchunk_make_writable(result, 0);
1229 pa_volume_memchunk(result, &s->sample_spec, &volume);
1233 result->memblock = pa_memblock_new(s->core->mempool, length);
1235 ptr = pa_memblock_acquire(result->memblock);
1236 result->length = pa_mix(info, n,
1239 &s->thread_info.soft_volume,
1240 s->thread_info.soft_muted);
1241 pa_memblock_release(result->memblock);
1246 inputs_drop(s, info, n, result);
1251 /* Called from IO thread context */
1252 void pa_sink_render_into(pa_sink*s, pa_memchunk *target) {
1253 pa_mix_info info[MAX_MIX_CHANNELS];
1255 size_t length, block_size_max;
1257 pa_sink_assert_ref(s);
1258 pa_sink_assert_io_context(s);
1259 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1261 pa_assert(target->memblock);
1262 pa_assert(target->length > 0);
1263 pa_assert(pa_frame_aligned(target->length, &s->sample_spec));
1265 pa_assert(!s->thread_info.rewind_requested);
1266 pa_assert(s->thread_info.rewind_nbytes == 0);
1268 if (s->thread_info.state == PA_SINK_SUSPENDED) {
1269 pa_silence_memchunk(target, &s->sample_spec);
1275 length = target->length;
1276 block_size_max = pa_mempool_block_size_max(s->core->mempool);
1277 if (length > block_size_max)
1278 length = pa_frame_align(block_size_max, &s->sample_spec);
1280 pa_assert(length > 0);
1282 n = fill_mix_info(s, &length, info, MAX_MIX_CHANNELS);
1285 if (target->length > length)
1286 target->length = length;
1288 pa_silence_memchunk(target, &s->sample_spec);
1289 } else if (n == 1) {
1292 if (target->length > length)
1293 target->length = length;
1295 pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume);
1297 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&volume))
1298 pa_silence_memchunk(target, &s->sample_spec);
1302 vchunk = info[0].chunk;
1303 pa_memblock_ref(vchunk.memblock);
1305 if (vchunk.length > length)
1306 vchunk.length = length;
1308 if (!pa_cvolume_is_norm(&volume)) {
1309 pa_memchunk_make_writable(&vchunk, 0);
1310 pa_volume_memchunk(&vchunk, &s->sample_spec, &volume);
1313 pa_memchunk_memcpy(target, &vchunk);
1314 pa_memblock_unref(vchunk.memblock);
1320 ptr = pa_memblock_acquire(target->memblock);
1322 target->length = pa_mix(info, n,
1323 (uint8_t*) ptr + target->index, length,
1325 &s->thread_info.soft_volume,
1326 s->thread_info.soft_muted);
1328 pa_memblock_release(target->memblock);
1331 inputs_drop(s, info, n, target);
1336 /* Called from IO thread context */
1337 void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target) {
1341 pa_sink_assert_ref(s);
1342 pa_sink_assert_io_context(s);
1343 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1345 pa_assert(target->memblock);
1346 pa_assert(target->length > 0);
1347 pa_assert(pa_frame_aligned(target->length, &s->sample_spec));
1349 pa_assert(!s->thread_info.rewind_requested);
1350 pa_assert(s->thread_info.rewind_nbytes == 0);
1352 if (s->thread_info.state == PA_SINK_SUSPENDED) {
1353 pa_silence_memchunk(target, &s->sample_spec);
1366 pa_sink_render_into(s, &chunk);
1375 /* Called from IO thread context */
1376 void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result) {
1377 pa_sink_assert_ref(s);
1378 pa_sink_assert_io_context(s);
1379 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1380 pa_assert(length > 0);
1381 pa_assert(pa_frame_aligned(length, &s->sample_spec));
1384 pa_assert(!s->thread_info.rewind_requested);
1385 pa_assert(s->thread_info.rewind_nbytes == 0);
1389 pa_sink_render(s, length, result);
1391 if (result->length < length) {
1394 pa_memchunk_make_writable(result, length);
1396 chunk.memblock = result->memblock;
1397 chunk.index = result->index + result->length;
1398 chunk.length = length - result->length;
1400 pa_sink_render_into_full(s, &chunk);
1402 result->length = length;
1408 /* Called from main thread */
1409 int pa_sink_update_rate(pa_sink *s, uint32_t rate, bool passthrough) {
1411 uint32_t desired_rate = rate;
1412 uint32_t default_rate = s->default_sample_rate;
1413 uint32_t alternate_rate = s->alternate_sample_rate;
1416 bool default_rate_is_usable = false;
1417 bool alternate_rate_is_usable = false;
1419 if (rate == s->sample_spec.rate)
1422 if (!s->update_rate)
1425 if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough)) {
1426 pa_log_debug("Default and alternate sample rates are the same, so there is no point in switching.");
1430 if (PA_SINK_IS_RUNNING(s->state)) {
1431 pa_log_info("Cannot update rate, SINK_IS_RUNNING, will keep using %u Hz",
1432 s->sample_spec.rate);
1436 if (s->monitor_source) {
1437 if (PA_SOURCE_IS_RUNNING(s->monitor_source->state) == true) {
1438 pa_log_info("Cannot update rate, monitor source is RUNNING");
1443 if (PA_UNLIKELY(!pa_sample_rate_valid(desired_rate)))
1446 if (!passthrough && default_rate != desired_rate && alternate_rate != desired_rate) {
1447 if (default_rate % 11025 == 0 && desired_rate % 11025 == 0)
1448 default_rate_is_usable = true;
1449 if (default_rate % 4000 == 0 && desired_rate % 4000 == 0)
1450 default_rate_is_usable = true;
1451 if (alternate_rate && alternate_rate % 11025 == 0 && desired_rate % 11025 == 0)
1452 alternate_rate_is_usable = true;
1453 if (alternate_rate && alternate_rate % 4000 == 0 && desired_rate % 4000 == 0)
1454 alternate_rate_is_usable = true;
1456 if (alternate_rate_is_usable && !default_rate_is_usable)
1457 desired_rate = alternate_rate;
1459 desired_rate = default_rate;
1462 if (desired_rate == s->sample_spec.rate)
1465 if (!passthrough && pa_sink_used_by(s) > 0)
1468 pa_log_debug("Suspending sink %s due to changing the sample rate.", s->name);
1469 pa_sink_suspend(s, true, PA_SUSPEND_INTERNAL);
1471 if (s->update_rate(s, desired_rate) >= 0) {
1472 /* update monitor source as well */
1473 if (s->monitor_source && !passthrough)
1474 pa_source_update_rate(s->monitor_source, desired_rate, false);
1475 pa_log_info("Changed sampling rate successfully");
1477 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1478 if (i->state == PA_SINK_INPUT_CORKED)
1479 pa_sink_input_update_rate(i);
1485 pa_sink_suspend(s, false, PA_SUSPEND_INTERNAL);
1490 /* Called from main thread */
1491 pa_usec_t pa_sink_get_latency(pa_sink *s) {
1494 pa_sink_assert_ref(s);
1495 pa_assert_ctl_context();
1496 pa_assert(PA_SINK_IS_LINKED(s->state));
1498 /* The returned value is supposed to be in the time domain of the sound card! */
1500 if (s->state == PA_SINK_SUSPENDED)
1503 if (!(s->flags & PA_SINK_LATENCY))
1506 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1508 /* usec is unsigned, so check that the offset can be added to usec without
1510 if (-s->latency_offset <= (int64_t) usec)
1511 usec += s->latency_offset;
1518 /* Called from IO thread */
1519 pa_usec_t pa_sink_get_latency_within_thread(pa_sink *s) {
1523 pa_sink_assert_ref(s);
1524 pa_sink_assert_io_context(s);
1525 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1527 /* The returned value is supposed to be in the time domain of the sound card! */
1529 if (s->thread_info.state == PA_SINK_SUSPENDED)
1532 if (!(s->flags & PA_SINK_LATENCY))
1535 o = PA_MSGOBJECT(s);
1537 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1539 if (o->process_msg(o, PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1542 /* usec is unsigned, so check that the offset can be added to usec without
1544 if (-s->thread_info.latency_offset <= (int64_t) usec)
1545 usec += s->thread_info.latency_offset;
1552 /* Called from the main thread (and also from the IO thread while the main
1553 * thread is waiting).
1555 * When a sink uses volume sharing, it never has the PA_SINK_FLAT_VOLUME flag
1556 * set. Instead, flat volume mode is detected by checking whether the root sink
1557 * has the flag set. */
1558 bool pa_sink_flat_volume_enabled(pa_sink *s) {
1559 pa_sink_assert_ref(s);
1561 s = pa_sink_get_master(s);
1564 return (s->flags & PA_SINK_FLAT_VOLUME);
1569 /* Called from the main thread (and also from the IO thread while the main
1570 * thread is waiting). */
1571 pa_sink *pa_sink_get_master(pa_sink *s) {
1572 pa_sink_assert_ref(s);
1574 while (s && (s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
1575 if (PA_UNLIKELY(!s->input_to_master))
1578 s = s->input_to_master->sink;
1584 /* Called from main context */
1585 bool pa_sink_is_filter(pa_sink *s) {
1586 pa_sink_assert_ref(s);
1588 return (s->input_to_master != NULL);
1591 /* Called from main context */
1592 bool pa_sink_is_passthrough(pa_sink *s) {
1593 pa_sink_input *alt_i;
1596 pa_sink_assert_ref(s);
1598 /* one and only one PASSTHROUGH input can possibly be connected */
1599 if (pa_idxset_size(s->inputs) == 1) {
1600 alt_i = pa_idxset_first(s->inputs, &idx);
1602 if (pa_sink_input_is_passthrough(alt_i))
1609 /* Called from main context */
1610 void pa_sink_enter_passthrough(pa_sink *s) {
1613 /* disable the monitor in passthrough mode */
1614 if (s->monitor_source) {
1615 pa_log_debug("Suspending monitor source %s, because the sink is entering the passthrough mode.", s->monitor_source->name);
1616 pa_source_suspend(s->monitor_source, true, PA_SUSPEND_PASSTHROUGH);
1619 /* set the volume to NORM */
1620 s->saved_volume = *pa_sink_get_volume(s, true);
1621 s->saved_save_volume = s->save_volume;
1623 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1624 pa_sink_set_volume(s, &volume, true, false);
1627 /* Called from main context */
1628 void pa_sink_leave_passthrough(pa_sink *s) {
1629 /* Unsuspend monitor */
1630 if (s->monitor_source) {
1631 pa_log_debug("Resuming monitor source %s, because the sink is leaving the passthrough mode.", s->monitor_source->name);
1632 pa_source_suspend(s->monitor_source, false, PA_SUSPEND_PASSTHROUGH);
1635 /* Restore sink volume to what it was before we entered passthrough mode */
1636 pa_sink_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
1638 pa_cvolume_init(&s->saved_volume);
1639 s->saved_save_volume = false;
1642 /* Called from main context. */
1643 static void compute_reference_ratio(pa_sink_input *i) {
1645 pa_cvolume remapped;
1649 pa_assert(pa_sink_flat_volume_enabled(i->sink));
1652 * Calculates the reference ratio from the sink's reference
1653 * volume. This basically calculates:
1655 * i->reference_ratio = i->volume / i->sink->reference_volume
1658 remapped = i->sink->reference_volume;
1659 pa_cvolume_remap(&remapped, &i->sink->channel_map, &i->channel_map);
1661 ratio = i->reference_ratio;
1663 for (c = 0; c < i->sample_spec.channels; c++) {
1665 /* We don't update when the sink volume is 0 anyway */
1666 if (remapped.values[c] <= PA_VOLUME_MUTED)
1669 /* Don't update the reference ratio unless necessary */
1670 if (pa_sw_volume_multiply(
1672 remapped.values[c]) == i->volume.values[c])
1675 ratio.values[c] = pa_sw_volume_divide(
1676 i->volume.values[c],
1677 remapped.values[c]);
1680 pa_sink_input_set_reference_ratio(i, &ratio);
1683 /* Called from main context. Only called for the root sink in volume sharing
1684 * cases, except for internal recursive calls. */
1685 static void compute_reference_ratios(pa_sink *s) {
1689 pa_sink_assert_ref(s);
1690 pa_assert_ctl_context();
1691 pa_assert(PA_SINK_IS_LINKED(s->state));
1692 pa_assert(pa_sink_flat_volume_enabled(s));
1694 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1695 compute_reference_ratio(i);
1697 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER))
1698 compute_reference_ratios(i->origin_sink);
1702 /* Called from main context. Only called for the root sink in volume sharing
1703 * cases, except for internal recursive calls. */
1704 static void compute_real_ratios(pa_sink *s) {
1708 pa_sink_assert_ref(s);
1709 pa_assert_ctl_context();
1710 pa_assert(PA_SINK_IS_LINKED(s->state));
1711 pa_assert(pa_sink_flat_volume_enabled(s));
1713 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1715 pa_cvolume remapped;
1717 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
1718 /* The origin sink uses volume sharing, so this input's real ratio
1719 * is handled as a special case - the real ratio must be 0 dB, and
1720 * as a result i->soft_volume must equal i->volume_factor. */
1721 pa_cvolume_reset(&i->real_ratio, i->real_ratio.channels);
1722 i->soft_volume = i->volume_factor;
1724 compute_real_ratios(i->origin_sink);
1730 * This basically calculates:
1732 * i->real_ratio := i->volume / s->real_volume
1733 * i->soft_volume := i->real_ratio * i->volume_factor
1736 remapped = s->real_volume;
1737 pa_cvolume_remap(&remapped, &s->channel_map, &i->channel_map);
1739 i->real_ratio.channels = i->sample_spec.channels;
1740 i->soft_volume.channels = i->sample_spec.channels;
1742 for (c = 0; c < i->sample_spec.channels; c++) {
1744 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1745 /* We leave i->real_ratio untouched */
1746 i->soft_volume.values[c] = PA_VOLUME_MUTED;
1750 /* Don't lose accuracy unless necessary */
1751 if (pa_sw_volume_multiply(
1752 i->real_ratio.values[c],
1753 remapped.values[c]) != i->volume.values[c])
1755 i->real_ratio.values[c] = pa_sw_volume_divide(
1756 i->volume.values[c],
1757 remapped.values[c]);
1759 i->soft_volume.values[c] = pa_sw_volume_multiply(
1760 i->real_ratio.values[c],
1761 i->volume_factor.values[c]);
1764 /* We don't copy the soft_volume to the thread_info data
1765 * here. That must be done by the caller */
1769 static pa_cvolume *cvolume_remap_minimal_impact(
1771 const pa_cvolume *template,
1772 const pa_channel_map *from,
1773 const pa_channel_map *to) {
1778 pa_assert(template);
1781 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1782 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1784 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1785 * mapping from sink input to sink volumes:
1787 * If template is a possible remapping from v it is used instead
1788 * of remapping anew.
1790 * If the channel maps don't match we set an all-channel volume on
1791 * the sink to ensure that changing a volume on one stream has no
1792 * effect that cannot be compensated for in another stream that
1793 * does not have the same channel map as the sink. */
1795 if (pa_channel_map_equal(from, to))
1799 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1804 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1808 /* Called from main thread. Only called for the root sink in volume sharing
1809 * cases, except for internal recursive calls. */
1810 static void get_maximum_input_volume(pa_sink *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1814 pa_sink_assert_ref(s);
1815 pa_assert(max_volume);
1816 pa_assert(channel_map);
1817 pa_assert(pa_sink_flat_volume_enabled(s));
1819 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1820 pa_cvolume remapped;
1822 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
1823 get_maximum_input_volume(i->origin_sink, max_volume, channel_map);
1825 /* Ignore this input. The origin sink uses volume sharing, so this
1826 * input's volume will be set to be equal to the root sink's real
1827 * volume. Obviously this input's current volume must not then
1828 * affect what the root sink's real volume will be. */
1832 remapped = i->volume;
1833 cvolume_remap_minimal_impact(&remapped, max_volume, &i->channel_map, channel_map);
1834 pa_cvolume_merge(max_volume, max_volume, &remapped);
1838 /* Called from main thread. Only called for the root sink in volume sharing
1839 * cases, except for internal recursive calls. */
1840 static bool has_inputs(pa_sink *s) {
1844 pa_sink_assert_ref(s);
1846 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1847 if (!i->origin_sink || !(i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER) || has_inputs(i->origin_sink))
1854 /* Called from main thread. Only called for the root sink in volume sharing
1855 * cases, except for internal recursive calls. */
1856 static void update_real_volume(pa_sink *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1860 pa_sink_assert_ref(s);
1861 pa_assert(new_volume);
1862 pa_assert(channel_map);
1864 s->real_volume = *new_volume;
1865 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1867 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1868 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
1869 if (pa_sink_flat_volume_enabled(s)) {
1870 pa_cvolume new_input_volume;
1872 /* Follow the root sink's real volume. */
1873 new_input_volume = *new_volume;
1874 pa_cvolume_remap(&new_input_volume, channel_map, &i->channel_map);
1875 pa_sink_input_set_volume_direct(i, &new_input_volume);
1876 compute_reference_ratio(i);
1879 update_real_volume(i->origin_sink, new_volume, channel_map);
1884 /* Called from main thread. Only called for the root sink in shared volume
1886 static void compute_real_volume(pa_sink *s) {
1887 pa_sink_assert_ref(s);
1888 pa_assert_ctl_context();
1889 pa_assert(PA_SINK_IS_LINKED(s->state));
1890 pa_assert(pa_sink_flat_volume_enabled(s));
1891 pa_assert(!(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER));
1893 /* This determines the maximum volume of all streams and sets
1894 * s->real_volume accordingly. */
1896 if (!has_inputs(s)) {
1897 /* In the special case that we have no sink inputs we leave the
1898 * volume unmodified. */
1899 update_real_volume(s, &s->reference_volume, &s->channel_map);
1903 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1905 /* First let's determine the new maximum volume of all inputs
1906 * connected to this sink */
1907 get_maximum_input_volume(s, &s->real_volume, &s->channel_map);
1908 update_real_volume(s, &s->real_volume, &s->channel_map);
1910 /* Then, let's update the real ratios/soft volumes of all inputs
1911 * connected to this sink */
1912 compute_real_ratios(s);
1915 /* Called from main thread. Only called for the root sink in shared volume
1916 * cases, except for internal recursive calls. */
1917 static void propagate_reference_volume(pa_sink *s) {
1921 pa_sink_assert_ref(s);
1922 pa_assert_ctl_context();
1923 pa_assert(PA_SINK_IS_LINKED(s->state));
1924 pa_assert(pa_sink_flat_volume_enabled(s));
1926 /* This is called whenever the sink volume changes that is not
1927 * caused by a sink input volume change. We need to fix up the
1928 * sink input volumes accordingly */
1930 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1931 pa_cvolume new_volume;
1933 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
1934 propagate_reference_volume(i->origin_sink);
1936 /* Since the origin sink uses volume sharing, this input's volume
1937 * needs to be updated to match the root sink's real volume, but
1938 * that will be done later in update_shared_real_volume(). */
1942 /* This basically calculates:
1944 * i->volume := s->reference_volume * i->reference_ratio */
1946 new_volume = s->reference_volume;
1947 pa_cvolume_remap(&new_volume, &s->channel_map, &i->channel_map);
1948 pa_sw_cvolume_multiply(&new_volume, &new_volume, &i->reference_ratio);
1949 pa_sink_input_set_volume_direct(i, &new_volume);
1953 /* Called from main thread. Only called for the root sink in volume sharing
1954 * cases, except for internal recursive calls. The return value indicates
1955 * whether any reference volume actually changed. */
1956 static bool update_reference_volume(pa_sink *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
1958 bool reference_volume_changed;
1962 pa_sink_assert_ref(s);
1963 pa_assert(PA_SINK_IS_LINKED(s->state));
1965 pa_assert(channel_map);
1966 pa_assert(pa_cvolume_valid(v));
1969 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1971 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1972 pa_sink_set_reference_volume_direct(s, &volume);
1974 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1976 if (!reference_volume_changed && !(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER))
1977 /* If the root sink's volume doesn't change, then there can't be any
1978 * changes in the other sinks in the sink tree either.
1980 * It's probably theoretically possible that even if the root sink's
1981 * volume changes slightly, some filter sink doesn't change its volume
1982 * due to rounding errors. If that happens, we still want to propagate
1983 * the changed root sink volume to the sinks connected to the
1984 * intermediate sink that didn't change its volume. This theoretical
1985 * possibility is the reason why we have that !(s->flags &
1986 * PA_SINK_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1987 * notice even if we returned here false always if
1988 * reference_volume_changed is false. */
1991 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1992 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER))
1993 update_reference_volume(i->origin_sink, v, channel_map, false);
1999 /* Called from main thread */
2000 void pa_sink_set_volume(
2002 const pa_cvolume *volume,
2006 pa_cvolume new_reference_volume;
2009 pa_sink_assert_ref(s);
2010 pa_assert_ctl_context();
2011 pa_assert(PA_SINK_IS_LINKED(s->state));
2012 pa_assert(!volume || pa_cvolume_valid(volume));
2013 pa_assert(volume || pa_sink_flat_volume_enabled(s));
2014 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
2016 /* make sure we don't change the volume when a PASSTHROUGH input is connected ...
2017 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
2018 if (pa_sink_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
2019 pa_log_warn("Cannot change volume, Sink is connected to PASSTHROUGH input");
2023 /* In case of volume sharing, the volume is set for the root sink first,
2024 * from which it's then propagated to the sharing sinks. */
2025 root_sink = pa_sink_get_master(s);
2027 if (PA_UNLIKELY(!root_sink))
2030 /* As a special exception we accept mono volumes on all sinks --
2031 * even on those with more complex channel maps */
2034 if (pa_cvolume_compatible(volume, &s->sample_spec))
2035 new_reference_volume = *volume;
2037 new_reference_volume = s->reference_volume;
2038 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
2041 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_sink->channel_map);
2043 if (update_reference_volume(root_sink, &new_reference_volume, &root_sink->channel_map, save)) {
2044 if (pa_sink_flat_volume_enabled(root_sink)) {
2045 /* OK, propagate this volume change back to the inputs */
2046 propagate_reference_volume(root_sink);
2048 /* And now recalculate the real volume */
2049 compute_real_volume(root_sink);
2051 update_real_volume(root_sink, &root_sink->reference_volume, &root_sink->channel_map);
2055 /* If volume is NULL we synchronize the sink's real and
2056 * reference volumes with the stream volumes. */
2058 pa_assert(pa_sink_flat_volume_enabled(root_sink));
2060 /* Ok, let's determine the new real volume */
2061 compute_real_volume(root_sink);
2063 /* Let's 'push' the reference volume if necessary */
2064 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_sink->real_volume);
2065 /* If the sink and its root don't have the same number of channels, we need to remap */
2066 if (s != root_sink && !pa_channel_map_equal(&s->channel_map, &root_sink->channel_map))
2067 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_sink->channel_map);
2068 update_reference_volume(root_sink, &new_reference_volume, &root_sink->channel_map, save);
2070 /* Now that the reference volume is updated, we can update the streams'
2071 * reference ratios. */
2072 compute_reference_ratios(root_sink);
2075 if (root_sink->set_volume) {
2076 /* If we have a function set_volume(), then we do not apply a
2077 * soft volume by default. However, set_volume() is free to
2078 * apply one to root_sink->soft_volume */
2080 pa_cvolume_reset(&root_sink->soft_volume, root_sink->sample_spec.channels);
2081 if (!(root_sink->flags & PA_SINK_DEFERRED_VOLUME))
2082 root_sink->set_volume(root_sink);
2085 /* If we have no function set_volume(), then the soft volume
2086 * becomes the real volume */
2087 root_sink->soft_volume = root_sink->real_volume;
2089 /* This tells the sink that soft volume and/or real volume changed */
2091 pa_assert_se(pa_asyncmsgq_send(root_sink->asyncmsgq, PA_MSGOBJECT(root_sink), PA_SINK_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
2094 /* Called from the io thread if sync volume is used, otherwise from the main thread.
2095 * Only to be called by sink implementor */
2096 void pa_sink_set_soft_volume(pa_sink *s, const pa_cvolume *volume) {
2098 pa_sink_assert_ref(s);
2099 pa_assert(!(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER));
2101 if (s->flags & PA_SINK_DEFERRED_VOLUME)
2102 pa_sink_assert_io_context(s);
2104 pa_assert_ctl_context();
2107 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
2109 s->soft_volume = *volume;
2111 if (PA_SINK_IS_LINKED(s->state) && !(s->flags & PA_SINK_DEFERRED_VOLUME))
2112 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
2114 s->thread_info.soft_volume = s->soft_volume;
2117 /* Called from the main thread. Only called for the root sink in volume sharing
2118 * cases, except for internal recursive calls. */
2119 static void propagate_real_volume(pa_sink *s, const pa_cvolume *old_real_volume) {
2123 pa_sink_assert_ref(s);
2124 pa_assert(old_real_volume);
2125 pa_assert_ctl_context();
2126 pa_assert(PA_SINK_IS_LINKED(s->state));
2128 /* This is called when the hardware's real volume changes due to
2129 * some external event. We copy the real volume into our
2130 * reference volume and then rebuild the stream volumes based on
2131 * i->real_ratio which should stay fixed. */
2133 if (!(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
2134 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
2137 /* 1. Make the real volume the reference volume */
2138 update_reference_volume(s, &s->real_volume, &s->channel_map, true);
2141 if (pa_sink_flat_volume_enabled(s)) {
2143 PA_IDXSET_FOREACH(i, s->inputs, idx) {
2144 pa_cvolume new_volume;
2146 /* 2. Since the sink's reference and real volumes are equal
2147 * now our ratios should be too. */
2148 pa_sink_input_set_reference_ratio(i, &i->real_ratio);
2150 /* 3. Recalculate the new stream reference volume based on the
2151 * reference ratio and the sink's reference volume.
2153 * This basically calculates:
2155 * i->volume = s->reference_volume * i->reference_ratio
2157 * This is identical to propagate_reference_volume() */
2158 new_volume = s->reference_volume;
2159 pa_cvolume_remap(&new_volume, &s->channel_map, &i->channel_map);
2160 pa_sw_cvolume_multiply(&new_volume, &new_volume, &i->reference_ratio);
2161 pa_sink_input_set_volume_direct(i, &new_volume);
2163 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER))
2164 propagate_real_volume(i->origin_sink, old_real_volume);
2168 /* Something got changed in the hardware. It probably makes sense
2169 * to save changed hw settings given that hw volume changes not
2170 * triggered by PA are almost certainly done by the user. */
2171 if (!(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER))
2172 s->save_volume = true;
2175 /* Called from io thread */
2176 void pa_sink_update_volume_and_mute(pa_sink *s) {
2178 pa_sink_assert_io_context(s);
2180 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
2183 /* Called from main thread */
2184 const pa_cvolume *pa_sink_get_volume(pa_sink *s, bool force_refresh) {
2185 pa_sink_assert_ref(s);
2186 pa_assert_ctl_context();
2187 pa_assert(PA_SINK_IS_LINKED(s->state));
2189 if (s->refresh_volume || force_refresh) {
2190 struct pa_cvolume old_real_volume;
2192 pa_assert(!(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER));
2194 old_real_volume = s->real_volume;
2196 if (!(s->flags & PA_SINK_DEFERRED_VOLUME) && s->get_volume)
2199 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
2201 update_real_volume(s, &s->real_volume, &s->channel_map);
2202 propagate_real_volume(s, &old_real_volume);
2205 return &s->reference_volume;
2208 /* Called from main thread. In volume sharing cases, only the root sink may
2210 void pa_sink_volume_changed(pa_sink *s, const pa_cvolume *new_real_volume) {
2211 pa_cvolume old_real_volume;
2213 pa_sink_assert_ref(s);
2214 pa_assert_ctl_context();
2215 pa_assert(PA_SINK_IS_LINKED(s->state));
2216 pa_assert(!(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER));
2218 /* The sink implementor may call this if the volume changed to make sure everyone is notified */
2220 old_real_volume = s->real_volume;
2221 update_real_volume(s, new_real_volume, &s->channel_map);
2222 propagate_real_volume(s, &old_real_volume);
2225 /* Called from main thread */
2226 void pa_sink_set_mute(pa_sink *s, bool mute, bool save) {
2229 pa_sink_assert_ref(s);
2230 pa_assert_ctl_context();
2232 old_muted = s->muted;
2234 if (mute == old_muted) {
2235 s->save_muted |= save;
2240 s->save_muted = save;
2242 if (!(s->flags & PA_SINK_DEFERRED_VOLUME) && s->set_mute) {
2243 s->set_mute_in_progress = true;
2245 s->set_mute_in_progress = false;
2248 if (!PA_SINK_IS_LINKED(s->state))
2251 pa_log_debug("The mute of sink %s changed from %s to %s.", s->name, pa_yes_no(old_muted), pa_yes_no(mute));
2252 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
2253 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2254 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_MUTE_CHANGED], s);
2257 /* Called from main thread */
2258 bool pa_sink_get_mute(pa_sink *s, bool force_refresh) {
2260 pa_sink_assert_ref(s);
2261 pa_assert_ctl_context();
2262 pa_assert(PA_SINK_IS_LINKED(s->state));
2264 if ((s->refresh_muted || force_refresh) && s->get_mute) {
2267 if (s->flags & PA_SINK_DEFERRED_VOLUME) {
2268 if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MUTE, &mute, 0, NULL) >= 0)
2269 pa_sink_mute_changed(s, mute);
2271 if (s->get_mute(s, &mute) >= 0)
2272 pa_sink_mute_changed(s, mute);
2279 /* Called from main thread */
2280 void pa_sink_mute_changed(pa_sink *s, bool new_muted) {
2281 pa_sink_assert_ref(s);
2282 pa_assert_ctl_context();
2283 pa_assert(PA_SINK_IS_LINKED(s->state));
2285 if (s->set_mute_in_progress)
2288 /* pa_sink_set_mute() does this same check, so this may appear redundant,
2289 * but we must have this here also, because the save parameter of
2290 * pa_sink_set_mute() would otherwise have unintended side effects (saving
2291 * the mute state when it shouldn't be saved). */
2292 if (new_muted == s->muted)
2295 pa_sink_set_mute(s, new_muted, true);
2298 /* Called from main thread */
2299 bool pa_sink_update_proplist(pa_sink *s, pa_update_mode_t mode, pa_proplist *p) {
2300 pa_sink_assert_ref(s);
2301 pa_assert_ctl_context();
2304 pa_proplist_update(s->proplist, mode, p);
2306 if (PA_SINK_IS_LINKED(s->state)) {
2307 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PROPLIST_CHANGED], s);
2308 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2314 /* Called from main thread */
2315 /* FIXME -- this should be dropped and be merged into pa_sink_update_proplist() */
2316 void pa_sink_set_description(pa_sink *s, const char *description) {
2318 pa_sink_assert_ref(s);
2319 pa_assert_ctl_context();
2321 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
2324 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
2326 if (old && description && pa_streq(old, description))
2330 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
2332 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
2334 if (s->monitor_source) {
2337 n = pa_sprintf_malloc("Monitor Source of %s", description ? description : s->name);
2338 pa_source_set_description(s->monitor_source, n);
2342 if (PA_SINK_IS_LINKED(s->state)) {
2343 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2344 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PROPLIST_CHANGED], s);
2348 /* Called from main thread */
2349 unsigned pa_sink_linked_by(pa_sink *s) {
2352 pa_sink_assert_ref(s);
2353 pa_assert_ctl_context();
2354 pa_assert(PA_SINK_IS_LINKED(s->state));
2356 ret = pa_idxset_size(s->inputs);
2358 /* We add in the number of streams connected to us here. Please
2359 * note the asymmetry to pa_sink_used_by()! */
2361 if (s->monitor_source)
2362 ret += pa_source_linked_by(s->monitor_source);
2367 /* Called from main thread */
2368 unsigned pa_sink_used_by(pa_sink *s) {
2371 pa_sink_assert_ref(s);
2372 pa_assert_ctl_context();
2373 pa_assert(PA_SINK_IS_LINKED(s->state));
2375 ret = pa_idxset_size(s->inputs);
2376 pa_assert(ret >= s->n_corked);
2378 /* Streams connected to our monitor source do not matter for
2379 * pa_sink_used_by()!.*/
2381 return ret - s->n_corked;
2384 /* Called from main thread */
2385 unsigned pa_sink_check_suspend(pa_sink *s) {
2390 pa_sink_assert_ref(s);
2391 pa_assert_ctl_context();
2393 if (!PA_SINK_IS_LINKED(s->state))
2398 PA_IDXSET_FOREACH(i, s->inputs, idx) {
2399 pa_sink_input_state_t st;
2401 st = pa_sink_input_get_state(i);
2403 /* We do not assert here. It is perfectly valid for a sink input to
2404 * be in the INIT state (i.e. created, marked done but not yet put)
2405 * and we should not care if it's unlinked as it won't contribute
2406 * towards our busy status.
2408 if (!PA_SINK_INPUT_IS_LINKED(st))
2411 if (st == PA_SINK_INPUT_CORKED)
2414 if (i->flags & PA_SINK_INPUT_DONT_INHIBIT_AUTO_SUSPEND)
2420 if (s->monitor_source)
2421 ret += pa_source_check_suspend(s->monitor_source);
2426 /* Called from the IO thread */
2427 static void sync_input_volumes_within_thread(pa_sink *s) {
2431 pa_sink_assert_ref(s);
2432 pa_sink_assert_io_context(s);
2434 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state) {
2435 if (pa_cvolume_equal(&i->thread_info.soft_volume, &i->soft_volume))
2438 i->thread_info.soft_volume = i->soft_volume;
2439 pa_sink_input_request_rewind(i, 0, true, false, false);
2443 /* Called from the IO thread. Only called for the root sink in volume sharing
2444 * cases, except for internal recursive calls. */
2445 static void set_shared_volume_within_thread(pa_sink *s) {
2446 pa_sink_input *i = NULL;
2449 pa_sink_assert_ref(s);
2451 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
2453 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state) {
2454 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER))
2455 set_shared_volume_within_thread(i->origin_sink);
2459 /* Called from IO thread, except when it is not */
2460 int pa_sink_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
2461 pa_sink *s = PA_SINK(o);
2462 pa_sink_assert_ref(s);
2464 switch ((pa_sink_message_t) code) {
2466 case PA_SINK_MESSAGE_ADD_INPUT: {
2467 pa_sink_input *i = PA_SINK_INPUT(userdata);
2469 /* If you change anything here, make sure to change the
2470 * sink input handling a few lines down at
2471 * PA_SINK_MESSAGE_FINISH_MOVE, too. */
2473 pa_hashmap_put(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index), pa_sink_input_ref(i));
2475 /* Since the caller sleeps in pa_sink_input_put(), we can
2476 * safely access data outside of thread_info even though
2479 if ((i->thread_info.sync_prev = i->sync_prev)) {
2480 pa_assert(i->sink == i->thread_info.sync_prev->sink);
2481 pa_assert(i->sync_prev->sync_next == i);
2482 i->thread_info.sync_prev->thread_info.sync_next = i;
2485 if ((i->thread_info.sync_next = i->sync_next)) {
2486 pa_assert(i->sink == i->thread_info.sync_next->sink);
2487 pa_assert(i->sync_next->sync_prev == i);
2488 i->thread_info.sync_next->thread_info.sync_prev = i;
2491 pa_assert(!i->thread_info.attached);
2492 i->thread_info.attached = true;
2497 pa_sink_input_set_state_within_thread(i, i->state);
2499 /* The requested latency of the sink input needs to be fixed up and
2500 * then configured on the sink. If this causes the sink latency to
2501 * go down, the sink implementor is responsible for doing a rewind
2502 * in the update_requested_latency() callback to ensure that the
2503 * sink buffer doesn't contain more data than what the new latency
2506 * XXX: Does it really make sense to push this responsibility to
2507 * the sink implementors? Wouldn't it be better to do it once in
2508 * the core than many times in the modules? */
2510 if (i->thread_info.requested_sink_latency != (pa_usec_t) -1)
2511 pa_sink_input_set_requested_latency_within_thread(i, i->thread_info.requested_sink_latency);
2513 pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind);
2514 pa_sink_input_update_max_request(i, s->thread_info.max_request);
2516 /* We don't rewind here automatically. This is left to the
2517 * sink input implementor because some sink inputs need a
2518 * slow start, i.e. need some time to buffer client
2519 * samples before beginning streaming.
2521 * XXX: Does it really make sense to push this functionality to
2522 * the sink implementors? Wouldn't it be better to do it once in
2523 * the core than many times in the modules? */
2525 /* In flat volume mode we need to update the volume as
2527 return o->process_msg(o, PA_SINK_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2530 case PA_SINK_MESSAGE_REMOVE_INPUT: {
2531 pa_sink_input *i = PA_SINK_INPUT(userdata);
2533 /* If you change anything here, make sure to change the
2534 * sink input handling a few lines down at
2535 * PA_SINK_MESSAGE_START_MOVE, too. */
2540 pa_sink_input_set_state_within_thread(i, i->state);
2542 pa_assert(i->thread_info.attached);
2543 i->thread_info.attached = false;
2545 /* Since the caller sleeps in pa_sink_input_unlink(),
2546 * we can safely access data outside of thread_info even
2547 * though it is mutable */
2549 pa_assert(!i->sync_prev);
2550 pa_assert(!i->sync_next);
2552 if (i->thread_info.sync_prev) {
2553 i->thread_info.sync_prev->thread_info.sync_next = i->thread_info.sync_prev->sync_next;
2554 i->thread_info.sync_prev = NULL;
2557 if (i->thread_info.sync_next) {
2558 i->thread_info.sync_next->thread_info.sync_prev = i->thread_info.sync_next->sync_prev;
2559 i->thread_info.sync_next = NULL;
2562 pa_hashmap_remove_and_free(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index));
2563 pa_sink_invalidate_requested_latency(s, true);
2564 pa_sink_request_rewind(s, (size_t) -1);
2566 /* In flat volume mode we need to update the volume as
2568 return o->process_msg(o, PA_SINK_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2571 case PA_SINK_MESSAGE_START_MOVE: {
2572 pa_sink_input *i = PA_SINK_INPUT(userdata);
2574 /* We don't support moving synchronized streams. */
2575 pa_assert(!i->sync_prev);
2576 pa_assert(!i->sync_next);
2577 pa_assert(!i->thread_info.sync_next);
2578 pa_assert(!i->thread_info.sync_prev);
2580 if (i->thread_info.state != PA_SINK_INPUT_CORKED) {
2582 size_t sink_nbytes, total_nbytes;
2584 /* The old sink probably has some audio from this
2585 * stream in its buffer. We want to "take it back" as
2586 * much as possible and play it to the new sink. We
2587 * don't know at this point how much the old sink can
2588 * rewind. We have to pick something, and that
2589 * something is the full latency of the old sink here.
2590 * So we rewind the stream buffer by the sink latency
2591 * amount, which may be more than what we should
2592 * rewind. This can result in a chunk of audio being
2593 * played both to the old sink and the new sink.
2595 * FIXME: Fix this code so that we don't have to make
2596 * guesses about how much the sink will actually be
2597 * able to rewind. If someone comes up with a solution
2598 * for this, something to note is that the part of the
2599 * latency that the old sink couldn't rewind should
2600 * ideally be compensated after the stream has moved
2601 * to the new sink by adding silence. The new sink
2602 * most likely can't start playing the moved stream
2603 * immediately, and that gap should be removed from
2604 * the "compensation silence" (at least at the time of
2605 * writing this, the move finish code will actually
2606 * already take care of dropping the new sink's
2607 * unrewindable latency, so taking into account the
2608 * unrewindable latency of the old sink is the only
2611 * The render_memblockq contents are discarded,
2612 * because when the sink changes, the format of the
2613 * audio stored in the render_memblockq may change
2614 * too, making the stored audio invalid. FIXME:
2615 * However, the read and write indices are moved back
2616 * the same amount, so if they are not the same now,
2617 * they won't be the same after the rewind either. If
2618 * the write index of the render_memblockq is ahead of
2619 * the read index, then the render_memblockq will feed
2620 * the new sink some silence first, which it shouldn't
2621 * do. The write index should be flushed to be the
2622 * same as the read index. */
2624 /* Get the latency of the sink */
2625 usec = pa_sink_get_latency_within_thread(s);
2626 sink_nbytes = pa_usec_to_bytes(usec, &s->sample_spec);
2627 total_nbytes = sink_nbytes + pa_memblockq_get_length(i->thread_info.render_memblockq);
2629 if (total_nbytes > 0) {
2630 i->thread_info.rewrite_nbytes = i->thread_info.resampler ? pa_resampler_request(i->thread_info.resampler, total_nbytes) : total_nbytes;
2631 i->thread_info.rewrite_flush = true;
2632 pa_sink_input_process_rewind(i, sink_nbytes);
2639 pa_assert(i->thread_info.attached);
2640 i->thread_info.attached = false;
2642 /* Let's remove the sink input ...*/
2643 pa_hashmap_remove_and_free(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index));
2645 pa_sink_invalidate_requested_latency(s, true);
2647 pa_log_debug("Requesting rewind due to started move");
2648 pa_sink_request_rewind(s, (size_t) -1);
2650 /* In flat volume mode we need to update the volume as
2652 return o->process_msg(o, PA_SINK_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2655 case PA_SINK_MESSAGE_FINISH_MOVE: {
2656 pa_sink_input *i = PA_SINK_INPUT(userdata);
2658 /* We don't support moving synchronized streams. */
2659 pa_assert(!i->sync_prev);
2660 pa_assert(!i->sync_next);
2661 pa_assert(!i->thread_info.sync_next);
2662 pa_assert(!i->thread_info.sync_prev);
2664 pa_hashmap_put(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index), pa_sink_input_ref(i));
2666 pa_assert(!i->thread_info.attached);
2667 i->thread_info.attached = true;
2672 if (i->thread_info.state != PA_SINK_INPUT_CORKED) {
2676 /* In the ideal case the new sink would start playing
2677 * the stream immediately. That requires the sink to
2678 * be able to rewind all of its latency, which usually
2679 * isn't possible, so there will probably be some gap
2680 * before the moved stream becomes audible. We then
2681 * have two possibilities: 1) start playing the stream
2682 * from where it is now, or 2) drop the unrewindable
2683 * latency of the sink from the stream. With option 1
2684 * we won't lose any audio but the stream will have a
2685 * pause. With option 2 we may lose some audio but the
2686 * stream time will be somewhat in sync with the wall
2687 * clock. Lennart seems to have chosen option 2 (one
2688 * of the reasons might have been that option 1 is
2689 * actually much harder to implement), so we drop the
2690 * latency of the new sink from the moved stream and
2691 * hope that the sink will undo most of that in the
2694 /* Get the latency of the sink */
2695 usec = pa_sink_get_latency_within_thread(s);
2696 nbytes = pa_usec_to_bytes(usec, &s->sample_spec);
2699 pa_sink_input_drop(i, nbytes);
2701 pa_log_debug("Requesting rewind due to finished move");
2702 pa_sink_request_rewind(s, nbytes);
2705 /* Updating the requested sink latency has to be done
2706 * after the sink rewind request, not before, because
2707 * otherwise the sink may limit the rewind amount
2710 if (i->thread_info.requested_sink_latency != (pa_usec_t) -1)
2711 pa_sink_input_set_requested_latency_within_thread(i, i->thread_info.requested_sink_latency);
2713 pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind);
2714 pa_sink_input_update_max_request(i, s->thread_info.max_request);
2716 return o->process_msg(o, PA_SINK_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2719 case PA_SINK_MESSAGE_SET_SHARED_VOLUME: {
2720 pa_sink *root_sink = pa_sink_get_master(s);
2722 if (PA_LIKELY(root_sink))
2723 set_shared_volume_within_thread(root_sink);
2728 case PA_SINK_MESSAGE_SET_VOLUME_SYNCED:
2730 if (s->flags & PA_SINK_DEFERRED_VOLUME) {
2732 pa_sink_volume_change_push(s);
2734 /* Fall through ... */
2736 case PA_SINK_MESSAGE_SET_VOLUME:
2738 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2739 s->thread_info.soft_volume = s->soft_volume;
2740 pa_sink_request_rewind(s, (size_t) -1);
2743 /* Fall through ... */
2745 case PA_SINK_MESSAGE_SYNC_VOLUMES:
2746 sync_input_volumes_within_thread(s);
2749 case PA_SINK_MESSAGE_GET_VOLUME:
2751 if ((s->flags & PA_SINK_DEFERRED_VOLUME) && s->get_volume) {
2753 pa_sink_volume_change_flush(s);
2754 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2757 /* In case sink implementor reset SW volume. */
2758 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2759 s->thread_info.soft_volume = s->soft_volume;
2760 pa_sink_request_rewind(s, (size_t) -1);
2765 case PA_SINK_MESSAGE_SET_MUTE:
2767 if (s->thread_info.soft_muted != s->muted) {
2768 s->thread_info.soft_muted = s->muted;
2769 pa_sink_request_rewind(s, (size_t) -1);
2772 if (s->flags & PA_SINK_DEFERRED_VOLUME && s->set_mute)
2777 case PA_SINK_MESSAGE_GET_MUTE:
2779 if (s->flags & PA_SINK_DEFERRED_VOLUME && s->get_mute)
2780 return s->get_mute(s, userdata);
2784 case PA_SINK_MESSAGE_SET_STATE: {
2786 bool suspend_change =
2787 (s->thread_info.state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2788 (PA_SINK_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SINK_SUSPENDED);
2790 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2792 if (s->thread_info.state == PA_SINK_SUSPENDED) {
2793 s->thread_info.rewind_nbytes = 0;
2794 s->thread_info.rewind_requested = false;
2797 if (suspend_change) {
2801 while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)))
2802 if (i->suspend_within_thread)
2803 i->suspend_within_thread(i, s->thread_info.state == PA_SINK_SUSPENDED);
2809 case PA_SINK_MESSAGE_GET_REQUESTED_LATENCY: {
2811 pa_usec_t *usec = userdata;
2812 *usec = pa_sink_get_requested_latency_within_thread(s);
2814 /* Yes, that's right, the IO thread will see -1 when no
2815 * explicit requested latency is configured, the main
2816 * thread will see max_latency */
2817 if (*usec == (pa_usec_t) -1)
2818 *usec = s->thread_info.max_latency;
2823 case PA_SINK_MESSAGE_SET_LATENCY_RANGE: {
2824 pa_usec_t *r = userdata;
2826 pa_sink_set_latency_range_within_thread(s, r[0], r[1]);
2831 case PA_SINK_MESSAGE_GET_LATENCY_RANGE: {
2832 pa_usec_t *r = userdata;
2834 r[0] = s->thread_info.min_latency;
2835 r[1] = s->thread_info.max_latency;
2840 case PA_SINK_MESSAGE_GET_FIXED_LATENCY:
2842 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2845 case PA_SINK_MESSAGE_SET_FIXED_LATENCY:
2847 pa_sink_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2850 case PA_SINK_MESSAGE_GET_MAX_REWIND:
2852 *((size_t*) userdata) = s->thread_info.max_rewind;
2855 case PA_SINK_MESSAGE_GET_MAX_REQUEST:
2857 *((size_t*) userdata) = s->thread_info.max_request;
2860 case PA_SINK_MESSAGE_SET_MAX_REWIND:
2862 pa_sink_set_max_rewind_within_thread(s, (size_t) offset);
2865 case PA_SINK_MESSAGE_SET_MAX_REQUEST:
2867 pa_sink_set_max_request_within_thread(s, (size_t) offset);
2870 case PA_SINK_MESSAGE_SET_PORT:
2872 pa_assert(userdata);
2874 struct sink_message_set_port *msg_data = userdata;
2875 msg_data->ret = s->set_port(s, msg_data->port);
2879 case PA_SINK_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2880 /* This message is sent from IO-thread and handled in main thread. */
2881 pa_assert_ctl_context();
2883 /* Make sure we're not messing with main thread when no longer linked */
2884 if (!PA_SINK_IS_LINKED(s->state))
2887 pa_sink_get_volume(s, true);
2888 pa_sink_get_mute(s, true);
2891 case PA_SINK_MESSAGE_SET_LATENCY_OFFSET:
2892 s->thread_info.latency_offset = offset;
2895 case PA_SINK_MESSAGE_GET_LATENCY:
2896 case PA_SINK_MESSAGE_MAX:
2903 /* Called from main thread */
2904 int pa_sink_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
2909 pa_core_assert_ref(c);
2910 pa_assert_ctl_context();
2911 pa_assert(cause != 0);
2913 PA_IDXSET_FOREACH(sink, c->sinks, idx) {
2916 if ((r = pa_sink_suspend(sink, suspend, cause)) < 0)
2923 /* Called from IO thread */
2924 void pa_sink_detach_within_thread(pa_sink *s) {
2928 pa_sink_assert_ref(s);
2929 pa_sink_assert_io_context(s);
2930 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
2932 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2936 if (s->monitor_source)
2937 pa_source_detach_within_thread(s->monitor_source);
2940 /* Called from IO thread */
2941 void pa_sink_attach_within_thread(pa_sink *s) {
2945 pa_sink_assert_ref(s);
2946 pa_sink_assert_io_context(s);
2947 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
2949 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2953 if (s->monitor_source)
2954 pa_source_attach_within_thread(s->monitor_source);
2957 /* Called from IO thread */
2958 void pa_sink_request_rewind(pa_sink*s, size_t nbytes) {
2959 pa_sink_assert_ref(s);
2960 pa_sink_assert_io_context(s);
2961 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
2963 if (nbytes == (size_t) -1)
2964 nbytes = s->thread_info.max_rewind;
2966 nbytes = PA_MIN(nbytes, s->thread_info.max_rewind);
2968 if (s->thread_info.rewind_requested &&
2969 nbytes <= s->thread_info.rewind_nbytes)
2972 s->thread_info.rewind_nbytes = nbytes;
2973 s->thread_info.rewind_requested = true;
2975 if (s->request_rewind)
2976 s->request_rewind(s);
2979 /* Called from IO thread */
2980 pa_usec_t pa_sink_get_requested_latency_within_thread(pa_sink *s) {
2981 pa_usec_t result = (pa_usec_t) -1;
2984 pa_usec_t monitor_latency;
2986 pa_sink_assert_ref(s);
2987 pa_sink_assert_io_context(s);
2989 if (!(s->flags & PA_SINK_DYNAMIC_LATENCY))
2990 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2992 if (s->thread_info.requested_latency_valid)
2993 return s->thread_info.requested_latency;
2995 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2996 if (i->thread_info.requested_sink_latency != (pa_usec_t) -1 &&
2997 (result == (pa_usec_t) -1 || result > i->thread_info.requested_sink_latency))
2998 result = i->thread_info.requested_sink_latency;
3000 monitor_latency = pa_source_get_requested_latency_within_thread(s->monitor_source);
3002 if (monitor_latency != (pa_usec_t) -1 &&
3003 (result == (pa_usec_t) -1 || result > monitor_latency))
3004 result = monitor_latency;
3006 if (result != (pa_usec_t) -1)
3007 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
3009 if (PA_SINK_IS_LINKED(s->thread_info.state)) {
3010 /* Only cache if properly initialized */
3011 s->thread_info.requested_latency = result;
3012 s->thread_info.requested_latency_valid = true;
3018 /* Called from main thread */
3019 pa_usec_t pa_sink_get_requested_latency(pa_sink *s) {
3022 pa_sink_assert_ref(s);
3023 pa_assert_ctl_context();
3024 pa_assert(PA_SINK_IS_LINKED(s->state));
3026 if (s->state == PA_SINK_SUSPENDED)
3029 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
3034 /* Called from IO as well as the main thread -- the latter only before the IO thread started up */
3035 void pa_sink_set_max_rewind_within_thread(pa_sink *s, size_t max_rewind) {
3039 pa_sink_assert_ref(s);
3040 pa_sink_assert_io_context(s);
3042 if (max_rewind == s->thread_info.max_rewind)
3045 s->thread_info.max_rewind = max_rewind;
3047 if (PA_SINK_IS_LINKED(s->thread_info.state))
3048 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
3049 pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind);
3051 if (s->monitor_source)
3052 pa_source_set_max_rewind_within_thread(s->monitor_source, s->thread_info.max_rewind);
3055 /* Called from main thread */
3056 void pa_sink_set_max_rewind(pa_sink *s, size_t max_rewind) {
3057 pa_sink_assert_ref(s);
3058 pa_assert_ctl_context();
3060 if (PA_SINK_IS_LINKED(s->state))
3061 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
3063 pa_sink_set_max_rewind_within_thread(s, max_rewind);
3066 /* Called from IO as well as the main thread -- the latter only before the IO thread started up */
3067 void pa_sink_set_max_request_within_thread(pa_sink *s, size_t max_request) {
3070 pa_sink_assert_ref(s);
3071 pa_sink_assert_io_context(s);
3073 if (max_request == s->thread_info.max_request)
3076 s->thread_info.max_request = max_request;
3078 if (PA_SINK_IS_LINKED(s->thread_info.state)) {
3081 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
3082 pa_sink_input_update_max_request(i, s->thread_info.max_request);
3086 /* Called from main thread */
3087 void pa_sink_set_max_request(pa_sink *s, size_t max_request) {
3088 pa_sink_assert_ref(s);
3089 pa_assert_ctl_context();
3091 if (PA_SINK_IS_LINKED(s->state))
3092 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MAX_REQUEST, NULL, max_request, NULL) == 0);
3094 pa_sink_set_max_request_within_thread(s, max_request);
3097 /* Called from IO thread */
3098 void pa_sink_invalidate_requested_latency(pa_sink *s, bool dynamic) {
3102 pa_sink_assert_ref(s);
3103 pa_sink_assert_io_context(s);
3105 if ((s->flags & PA_SINK_DYNAMIC_LATENCY))
3106 s->thread_info.requested_latency_valid = false;
3110 if (PA_SINK_IS_LINKED(s->thread_info.state)) {
3112 if (s->update_requested_latency)
3113 s->update_requested_latency(s);
3115 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
3116 if (i->update_sink_requested_latency)
3117 i->update_sink_requested_latency(i);
3121 /* Called from main thread */
3122 void pa_sink_set_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency) {
3123 pa_sink_assert_ref(s);
3124 pa_assert_ctl_context();
3126 /* min_latency == 0: no limit
3127 * min_latency anything else: specified limit
3129 * Similar for max_latency */
3131 if (min_latency < ABSOLUTE_MIN_LATENCY)
3132 min_latency = ABSOLUTE_MIN_LATENCY;
3134 if (max_latency <= 0 ||
3135 max_latency > ABSOLUTE_MAX_LATENCY)
3136 max_latency = ABSOLUTE_MAX_LATENCY;
3138 pa_assert(min_latency <= max_latency);
3140 /* Hmm, let's see if someone forgot to set PA_SINK_DYNAMIC_LATENCY here... */
3141 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
3142 max_latency == ABSOLUTE_MAX_LATENCY) ||
3143 (s->flags & PA_SINK_DYNAMIC_LATENCY));
3145 if (PA_SINK_IS_LINKED(s->state)) {
3151 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
3153 pa_sink_set_latency_range_within_thread(s, min_latency, max_latency);
3156 /* Called from main thread */
3157 void pa_sink_get_latency_range(pa_sink *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
3158 pa_sink_assert_ref(s);
3159 pa_assert_ctl_context();
3160 pa_assert(min_latency);
3161 pa_assert(max_latency);
3163 if (PA_SINK_IS_LINKED(s->state)) {
3164 pa_usec_t r[2] = { 0, 0 };
3166 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
3168 *min_latency = r[0];
3169 *max_latency = r[1];
3171 *min_latency = s->thread_info.min_latency;
3172 *max_latency = s->thread_info.max_latency;
3176 /* Called from IO thread */
3177 void pa_sink_set_latency_range_within_thread(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency) {
3178 pa_sink_assert_ref(s);
3179 pa_sink_assert_io_context(s);
3181 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
3182 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
3183 pa_assert(min_latency <= max_latency);
3185 /* Hmm, let's see if someone forgot to set PA_SINK_DYNAMIC_LATENCY here... */
3186 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
3187 max_latency == ABSOLUTE_MAX_LATENCY) ||
3188 (s->flags & PA_SINK_DYNAMIC_LATENCY));
3190 if (s->thread_info.min_latency == min_latency &&
3191 s->thread_info.max_latency == max_latency)
3194 s->thread_info.min_latency = min_latency;
3195 s->thread_info.max_latency = max_latency;
3197 if (PA_SINK_IS_LINKED(s->thread_info.state)) {
3201 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
3202 if (i->update_sink_latency_range)
3203 i->update_sink_latency_range(i);
3206 pa_sink_invalidate_requested_latency(s, false);
3208 pa_source_set_latency_range_within_thread(s->monitor_source, min_latency, max_latency);
3211 /* Called from main thread */
3212 void pa_sink_set_fixed_latency(pa_sink *s, pa_usec_t latency) {
3213 pa_sink_assert_ref(s);
3214 pa_assert_ctl_context();
3216 if (s->flags & PA_SINK_DYNAMIC_LATENCY) {
3217 pa_assert(latency == 0);
3221 if (latency < ABSOLUTE_MIN_LATENCY)
3222 latency = ABSOLUTE_MIN_LATENCY;
3224 if (latency > ABSOLUTE_MAX_LATENCY)
3225 latency = ABSOLUTE_MAX_LATENCY;
3227 if (PA_SINK_IS_LINKED(s->state))
3228 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
3230 s->thread_info.fixed_latency = latency;
3232 pa_source_set_fixed_latency(s->monitor_source, latency);
3235 /* Called from main thread */
3236 pa_usec_t pa_sink_get_fixed_latency(pa_sink *s) {
3239 pa_sink_assert_ref(s);
3240 pa_assert_ctl_context();
3242 if (s->flags & PA_SINK_DYNAMIC_LATENCY)
3245 if (PA_SINK_IS_LINKED(s->state))
3246 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
3248 latency = s->thread_info.fixed_latency;
3253 /* Called from IO thread */
3254 void pa_sink_set_fixed_latency_within_thread(pa_sink *s, pa_usec_t latency) {
3255 pa_sink_assert_ref(s);
3256 pa_sink_assert_io_context(s);
3258 if (s->flags & PA_SINK_DYNAMIC_LATENCY) {
3259 pa_assert(latency == 0);
3260 s->thread_info.fixed_latency = 0;
3262 if (s->monitor_source)
3263 pa_source_set_fixed_latency_within_thread(s->monitor_source, 0);
3268 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
3269 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
3271 if (s->thread_info.fixed_latency == latency)
3274 s->thread_info.fixed_latency = latency;
3276 if (PA_SINK_IS_LINKED(s->thread_info.state)) {
3280 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
3281 if (i->update_sink_fixed_latency)
3282 i->update_sink_fixed_latency(i);
3285 pa_sink_invalidate_requested_latency(s, false);
3287 pa_source_set_fixed_latency_within_thread(s->monitor_source, latency);
3290 /* Called from main context */
3291 void pa_sink_set_latency_offset(pa_sink *s, int64_t offset) {
3292 pa_sink_assert_ref(s);
3294 s->latency_offset = offset;
3296 if (PA_SINK_IS_LINKED(s->state))
3297 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_LATENCY_OFFSET, NULL, offset, NULL) == 0);
3299 s->thread_info.latency_offset = offset;
3302 /* Called from main context */
3303 size_t pa_sink_get_max_rewind(pa_sink *s) {
3305 pa_assert_ctl_context();
3306 pa_sink_assert_ref(s);
3308 if (!PA_SINK_IS_LINKED(s->state))
3309 return s->thread_info.max_rewind;
3311 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
3316 /* Called from main context */
3317 size_t pa_sink_get_max_request(pa_sink *s) {
3319 pa_sink_assert_ref(s);
3320 pa_assert_ctl_context();
3322 if (!PA_SINK_IS_LINKED(s->state))
3323 return s->thread_info.max_request;
3325 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MAX_REQUEST, &r, 0, NULL) == 0);
3330 /* Called from main context */
3331 int pa_sink_set_port(pa_sink *s, const char *name, bool save) {
3332 pa_device_port *port;
3335 pa_sink_assert_ref(s);
3336 pa_assert_ctl_context();
3339 pa_log_debug("set_port() operation not implemented for sink %u \"%s\"", s->index, s->name);
3340 return -PA_ERR_NOTIMPLEMENTED;
3344 return -PA_ERR_NOENTITY;
3346 if (!(port = pa_hashmap_get(s->ports, name)))
3347 return -PA_ERR_NOENTITY;
3349 if (s->active_port == port) {
3350 s->save_port = s->save_port || save;
3354 if (s->flags & PA_SINK_DEFERRED_VOLUME) {
3355 struct sink_message_set_port msg = { .port = port, .ret = 0 };
3356 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
3360 ret = s->set_port(s, port);
3363 return -PA_ERR_NOENTITY;
3365 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
3367 pa_log_info("Changed port of sink %u \"%s\" to %s", s->index, s->name, port->name);
3369 s->active_port = port;
3370 s->save_port = save;
3372 pa_sink_set_latency_offset(s, s->active_port->latency_offset);
3374 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PORT_CHANGED], s);
3379 bool pa_device_init_icon(pa_proplist *p, bool is_sink) {
3380 const char *ff, *c, *t = NULL, *s = "", *profile, *bus;
3384 if (pa_proplist_contains(p, PA_PROP_DEVICE_ICON_NAME))
3387 if ((ff = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR))) {
3389 if (pa_streq(ff, "microphone"))
3390 t = "audio-input-microphone";
3391 else if (pa_streq(ff, "webcam"))
3393 else if (pa_streq(ff, "computer"))
3395 else if (pa_streq(ff, "handset"))
3397 else if (pa_streq(ff, "portable"))
3398 t = "multimedia-player";
3399 else if (pa_streq(ff, "tv"))
3400 t = "video-display";
3403 * The following icons are not part of the icon naming spec,
3404 * because Rodney Dawes sucks as the maintainer of that spec.
3406 * http://lists.freedesktop.org/archives/xdg/2009-May/010397.html
3408 else if (pa_streq(ff, "headset"))
3409 t = "audio-headset";
3410 else if (pa_streq(ff, "headphone"))
3411 t = "audio-headphones";
3412 else if (pa_streq(ff, "speaker"))
3413 t = "audio-speakers";
3414 else if (pa_streq(ff, "hands-free"))
3415 t = "audio-handsfree";
3419 if ((c = pa_proplist_gets(p, PA_PROP_DEVICE_CLASS)))
3420 if (pa_streq(c, "modem"))
3427 t = "audio-input-microphone";
3430 if ((profile = pa_proplist_gets(p, PA_PROP_DEVICE_PROFILE_NAME))) {
3431 if (strstr(profile, "analog"))
3433 else if (strstr(profile, "iec958"))
3435 else if (strstr(profile, "hdmi"))
3439 bus = pa_proplist_gets(p, PA_PROP_DEVICE_BUS);
3441 pa_proplist_setf(p, PA_PROP_DEVICE_ICON_NAME, "%s%s%s%s", t, pa_strempty(s), bus ? "-" : "", pa_strempty(bus));
3446 bool pa_device_init_description(pa_proplist *p, pa_card *card) {
3447 const char *s, *d = NULL, *k;
3450 if (pa_proplist_contains(p, PA_PROP_DEVICE_DESCRIPTION))
3454 if ((s = pa_proplist_gets(card->proplist, PA_PROP_DEVICE_DESCRIPTION)))
3458 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR)))
3459 if (pa_streq(s, "internal"))
3460 d = _("Built-in Audio");
3463 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_CLASS)))
3464 if (pa_streq(s, "modem"))
3468 d = pa_proplist_gets(p, PA_PROP_DEVICE_PRODUCT_NAME);
3473 k = pa_proplist_gets(p, PA_PROP_DEVICE_PROFILE_DESCRIPTION);
3476 pa_proplist_setf(p, PA_PROP_DEVICE_DESCRIPTION, "%s %s", d, k);
3478 pa_proplist_sets(p, PA_PROP_DEVICE_DESCRIPTION, d);
3483 bool pa_device_init_intended_roles(pa_proplist *p) {
3487 if (pa_proplist_contains(p, PA_PROP_DEVICE_INTENDED_ROLES))
3490 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR)))
3491 if (pa_streq(s, "handset") || pa_streq(s, "hands-free")
3492 || pa_streq(s, "headset")) {
3493 pa_proplist_sets(p, PA_PROP_DEVICE_INTENDED_ROLES, "phone");
3500 unsigned pa_device_init_priority(pa_proplist *p) {
3502 unsigned priority = 0;
3506 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_CLASS))) {
3508 if (pa_streq(s, "sound"))
3510 else if (!pa_streq(s, "modem"))
3514 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR))) {
3516 if (pa_streq(s, "internal"))
3518 else if (pa_streq(s, "speaker"))
3520 else if (pa_streq(s, "headphone"))
3524 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_BUS))) {
3526 if (pa_streq(s, "pci"))
3528 else if (pa_streq(s, "usb"))
3530 else if (pa_streq(s, "bluetooth"))
3534 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_PROFILE_NAME))) {
3536 if (pa_startswith(s, "analog-"))
3538 else if (pa_startswith(s, "iec958-"))
3545 PA_STATIC_FLIST_DECLARE(pa_sink_volume_change, 0, pa_xfree);
3547 /* Called from the IO thread. */
3548 static pa_sink_volume_change *pa_sink_volume_change_new(pa_sink *s) {
3549 pa_sink_volume_change *c;
3550 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_sink_volume_change))))
3551 c = pa_xnew(pa_sink_volume_change, 1);
3553 PA_LLIST_INIT(pa_sink_volume_change, c);
3555 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
3559 /* Called from the IO thread. */
3560 static void pa_sink_volume_change_free(pa_sink_volume_change *c) {
3562 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_sink_volume_change), c) < 0)
3566 /* Called from the IO thread. */
3567 void pa_sink_volume_change_push(pa_sink *s) {
3568 pa_sink_volume_change *c = NULL;
3569 pa_sink_volume_change *nc = NULL;
3570 pa_sink_volume_change *pc = NULL;
3571 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
3573 const char *direction = NULL;
3576 nc = pa_sink_volume_change_new(s);
3578 /* NOTE: There is already more different volumes in pa_sink that I can remember.
3579 * Adding one more volume for HW would get us rid of this, but I am trying
3580 * to survive with the ones we already have. */
3581 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
3583 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
3584 pa_log_debug("Volume not changing");
3585 pa_sink_volume_change_free(nc);
3589 nc->at = pa_sink_get_latency_within_thread(s);
3590 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
3592 if (s->thread_info.volume_changes_tail) {
3593 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
3594 /* If volume is going up let's do it a bit late. If it is going
3595 * down let's do it a bit early. */
3596 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
3597 if (nc->at + safety_margin > c->at) {
3598 nc->at += safety_margin;
3603 else if (nc->at - safety_margin > c->at) {
3604 nc->at -= safety_margin;
3612 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
3613 nc->at += safety_margin;
3616 nc->at -= safety_margin;
3619 PA_LLIST_PREPEND(pa_sink_volume_change, s->thread_info.volume_changes, nc);
3622 PA_LLIST_INSERT_AFTER(pa_sink_volume_change, s->thread_info.volume_changes, c, nc);
3625 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
3627 /* We can ignore volume events that came earlier but should happen later than this. */
3628 PA_LLIST_FOREACH_SAFE(c, pc, nc->next) {
3629 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
3630 pa_sink_volume_change_free(c);
3633 s->thread_info.volume_changes_tail = nc;
3636 /* Called from the IO thread. */
3637 static void pa_sink_volume_change_flush(pa_sink *s) {
3638 pa_sink_volume_change *c = s->thread_info.volume_changes;
3640 s->thread_info.volume_changes = NULL;
3641 s->thread_info.volume_changes_tail = NULL;
3643 pa_sink_volume_change *next = c->next;
3644 pa_sink_volume_change_free(c);
3649 /* Called from the IO thread. */
3650 bool pa_sink_volume_change_apply(pa_sink *s, pa_usec_t *usec_to_next) {
3656 if (!s->thread_info.volume_changes || !PA_SINK_IS_LINKED(s->state)) {
3662 pa_assert(s->write_volume);
3664 now = pa_rtclock_now();
3666 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
3667 pa_sink_volume_change *c = s->thread_info.volume_changes;
3668 PA_LLIST_REMOVE(pa_sink_volume_change, s->thread_info.volume_changes, c);
3669 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
3670 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
3672 s->thread_info.current_hw_volume = c->hw_volume;
3673 pa_sink_volume_change_free(c);
3679 if (s->thread_info.volume_changes) {
3681 *usec_to_next = s->thread_info.volume_changes->at - now;
3682 if (pa_log_ratelimit(PA_LOG_DEBUG))
3683 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
3688 s->thread_info.volume_changes_tail = NULL;
3693 /* Called from the IO thread. */
3694 static void pa_sink_volume_change_rewind(pa_sink *s, size_t nbytes) {
3695 /* All the queued volume events later than current latency are shifted to happen earlier. */
3696 pa_sink_volume_change *c;
3697 pa_volume_t prev_vol = pa_cvolume_avg(&s->thread_info.current_hw_volume);
3698 pa_usec_t rewound = pa_bytes_to_usec(nbytes, &s->sample_spec);
3699 pa_usec_t limit = pa_sink_get_latency_within_thread(s);
3701 pa_log_debug("latency = %lld", (long long) limit);
3702 limit += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
3704 PA_LLIST_FOREACH(c, s->thread_info.volume_changes) {
3705 pa_usec_t modified_limit = limit;
3706 if (prev_vol > pa_cvolume_avg(&c->hw_volume))
3707 modified_limit -= s->thread_info.volume_change_safety_margin;
3709 modified_limit += s->thread_info.volume_change_safety_margin;
3710 if (c->at > modified_limit) {
3712 if (c->at < modified_limit)
3713 c->at = modified_limit;
3715 prev_vol = pa_cvolume_avg(&c->hw_volume);
3717 pa_sink_volume_change_apply(s, NULL);
3720 /* Called from the main thread */
3721 /* Gets the list of formats supported by the sink. The members and idxset must
3722 * be freed by the caller. */
3723 pa_idxset* pa_sink_get_formats(pa_sink *s) {
3728 if (s->get_formats) {
3729 /* Sink supports format query, all is good */
3730 ret = s->get_formats(s);
3732 /* Sink doesn't support format query, so assume it does PCM */
3733 pa_format_info *f = pa_format_info_new();
3734 f->encoding = PA_ENCODING_PCM;
3736 ret = pa_idxset_new(NULL, NULL);
3737 pa_idxset_put(ret, f, NULL);
3743 /* Called from the main thread */
3744 /* Allows an external source to set what formats a sink supports if the sink
3745 * permits this. The function makes a copy of the formats on success. */
3746 bool pa_sink_set_formats(pa_sink *s, pa_idxset *formats) {
3751 /* Sink supports setting formats -- let's give it a shot */
3752 return s->set_formats(s, formats);
3754 /* Sink doesn't support setting this -- bail out */
3758 /* Called from the main thread */
3759 /* Checks if the sink can accept this format */
3760 bool pa_sink_check_format(pa_sink *s, pa_format_info *f) {
3761 pa_idxset *formats = NULL;
3767 formats = pa_sink_get_formats(s);
3770 pa_format_info *finfo_device;
3773 PA_IDXSET_FOREACH(finfo_device, formats, i) {
3774 if (pa_format_info_is_compatible(finfo_device, f)) {
3780 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
3786 /* Called from the main thread */
3787 /* Calculates the intersection between formats supported by the sink and
3788 * in_formats, and returns these, in the order of the sink's formats. */
3789 pa_idxset* pa_sink_check_formats(pa_sink *s, pa_idxset *in_formats) {
3790 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *sink_formats = NULL;
3791 pa_format_info *f_sink, *f_in;
3796 if (!in_formats || pa_idxset_isempty(in_formats))
3799 sink_formats = pa_sink_get_formats(s);
3801 PA_IDXSET_FOREACH(f_sink, sink_formats, i) {
3802 PA_IDXSET_FOREACH(f_in, in_formats, j) {
3803 if (pa_format_info_is_compatible(f_sink, f_in))
3804 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
3810 pa_idxset_free(sink_formats, (pa_free_cb_t) pa_format_info_free);
3815 /* Called from the main thread. */
3816 void pa_sink_set_reference_volume_direct(pa_sink *s, const pa_cvolume *volume) {
3817 pa_cvolume old_volume;
3818 char old_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
3819 char new_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
3824 old_volume = s->reference_volume;
3826 if (pa_cvolume_equal(volume, &old_volume))
3829 s->reference_volume = *volume;
3830 pa_log_debug("The reference volume of sink %s changed from %s to %s.", s->name,
3831 pa_cvolume_snprint_verbose(old_volume_str, sizeof(old_volume_str), &old_volume, &s->channel_map,
3832 s->flags & PA_SINK_DECIBEL_VOLUME),
3833 pa_cvolume_snprint_verbose(new_volume_str, sizeof(new_volume_str), volume, &s->channel_map,
3834 s->flags & PA_SINK_DECIBEL_VOLUME));
3836 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
3837 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_VOLUME_CHANGED], s);