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 if (s->unlink_requested)
682 s->unlink_requested = true;
684 linked = PA_SINK_IS_LINKED(s->state);
687 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_UNLINK], s);
689 if (s->state != PA_SINK_UNLINKED)
690 pa_namereg_unregister(s->core, s->name);
691 pa_idxset_remove_by_data(s->core->sinks, s, NULL);
694 pa_idxset_remove_by_data(s->card->sinks, s, NULL);
696 while ((i = pa_idxset_first(s->inputs, NULL))) {
698 pa_sink_input_kill(i);
703 sink_set_state(s, PA_SINK_UNLINKED);
705 s->state = PA_SINK_UNLINKED;
709 if (s->monitor_source)
710 pa_source_unlink(s->monitor_source);
713 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
714 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_UNLINK_POST], s);
718 /* Called from main context */
719 static void sink_free(pa_object *o) {
720 pa_sink *s = PA_SINK(o);
723 pa_assert_ctl_context();
724 pa_assert(pa_sink_refcnt(s) == 0);
726 if (PA_SINK_IS_LINKED(s->state))
729 pa_log_info("Freeing sink %u \"%s\"", s->index, s->name);
731 pa_sink_volume_change_flush(s);
733 if (s->monitor_source) {
734 pa_source_unref(s->monitor_source);
735 s->monitor_source = NULL;
738 pa_idxset_free(s->inputs, NULL);
739 pa_hashmap_free(s->thread_info.inputs);
741 if (s->silence.memblock)
742 pa_memblock_unref(s->silence.memblock);
748 pa_proplist_free(s->proplist);
751 pa_hashmap_free(s->ports);
756 /* Called from main context, and not while the IO thread is active, please */
757 void pa_sink_set_asyncmsgq(pa_sink *s, pa_asyncmsgq *q) {
758 pa_sink_assert_ref(s);
759 pa_assert_ctl_context();
763 if (s->monitor_source)
764 pa_source_set_asyncmsgq(s->monitor_source, q);
767 /* Called from main context, and not while the IO thread is active, please */
768 void pa_sink_update_flags(pa_sink *s, pa_sink_flags_t mask, pa_sink_flags_t value) {
769 pa_sink_flags_t old_flags;
770 pa_sink_input *input;
773 pa_sink_assert_ref(s);
774 pa_assert_ctl_context();
776 /* For now, allow only a minimal set of flags to be changed. */
777 pa_assert((mask & ~(PA_SINK_DYNAMIC_LATENCY|PA_SINK_LATENCY)) == 0);
779 old_flags = s->flags;
780 s->flags = (s->flags & ~mask) | (value & mask);
782 if (s->flags == old_flags)
785 if ((s->flags & PA_SINK_LATENCY) != (old_flags & PA_SINK_LATENCY))
786 pa_log_debug("Sink %s: LATENCY flag %s.", s->name, (s->flags & PA_SINK_LATENCY) ? "enabled" : "disabled");
788 if ((s->flags & PA_SINK_DYNAMIC_LATENCY) != (old_flags & PA_SINK_DYNAMIC_LATENCY))
789 pa_log_debug("Sink %s: DYNAMIC_LATENCY flag %s.",
790 s->name, (s->flags & PA_SINK_DYNAMIC_LATENCY) ? "enabled" : "disabled");
792 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
793 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_FLAGS_CHANGED], s);
795 if (s->monitor_source)
796 pa_source_update_flags(s->monitor_source,
797 ((mask & PA_SINK_LATENCY) ? PA_SOURCE_LATENCY : 0) |
798 ((mask & PA_SINK_DYNAMIC_LATENCY) ? PA_SOURCE_DYNAMIC_LATENCY : 0),
799 ((value & PA_SINK_LATENCY) ? PA_SOURCE_LATENCY : 0) |
800 ((value & PA_SINK_DYNAMIC_LATENCY) ? PA_SOURCE_DYNAMIC_LATENCY : 0));
802 PA_IDXSET_FOREACH(input, s->inputs, idx) {
803 if (input->origin_sink)
804 pa_sink_update_flags(input->origin_sink, mask, value);
808 /* Called from IO context, or before _put() from main context */
809 void pa_sink_set_rtpoll(pa_sink *s, pa_rtpoll *p) {
810 pa_sink_assert_ref(s);
811 pa_sink_assert_io_context(s);
813 s->thread_info.rtpoll = p;
815 if (s->monitor_source)
816 pa_source_set_rtpoll(s->monitor_source, p);
819 /* Called from main context */
820 int pa_sink_update_status(pa_sink*s) {
821 pa_sink_assert_ref(s);
822 pa_assert_ctl_context();
823 pa_assert(PA_SINK_IS_LINKED(s->state));
825 if (s->state == PA_SINK_SUSPENDED)
828 return sink_set_state(s, pa_sink_used_by(s) ? PA_SINK_RUNNING : PA_SINK_IDLE);
831 /* Called from any context - must be threadsafe */
832 void pa_sink_set_mixer_dirty(pa_sink *s, bool is_dirty) {
833 pa_atomic_store(&s->mixer_dirty, is_dirty ? 1 : 0);
836 /* Called from main context */
837 int pa_sink_suspend(pa_sink *s, bool suspend, pa_suspend_cause_t cause) {
838 pa_sink_assert_ref(s);
839 pa_assert_ctl_context();
840 pa_assert(PA_SINK_IS_LINKED(s->state));
841 pa_assert(cause != 0);
844 s->suspend_cause |= cause;
845 s->monitor_source->suspend_cause |= cause;
847 s->suspend_cause &= ~cause;
848 s->monitor_source->suspend_cause &= ~cause;
851 if (!(s->suspend_cause & PA_SUSPEND_SESSION) && (pa_atomic_load(&s->mixer_dirty) != 0)) {
852 /* This might look racy but isn't: If somebody sets mixer_dirty exactly here,
853 it'll be handled just fine. */
854 pa_sink_set_mixer_dirty(s, false);
855 pa_log_debug("Mixer is now accessible. Updating alsa mixer settings.");
856 if (s->active_port && s->set_port) {
857 if (s->flags & PA_SINK_DEFERRED_VOLUME) {
858 struct sink_message_set_port msg = { .port = s->active_port, .ret = 0 };
859 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
862 s->set_port(s, s->active_port);
872 if ((pa_sink_get_state(s) == PA_SINK_SUSPENDED) == !!s->suspend_cause)
875 pa_log_debug("Suspend cause of sink %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
877 if (s->suspend_cause)
878 return sink_set_state(s, PA_SINK_SUSPENDED);
880 return sink_set_state(s, pa_sink_used_by(s) ? PA_SINK_RUNNING : PA_SINK_IDLE);
883 /* Called from main context */
884 pa_queue *pa_sink_move_all_start(pa_sink *s, pa_queue *q) {
885 pa_sink_input *i, *n;
888 pa_sink_assert_ref(s);
889 pa_assert_ctl_context();
890 pa_assert(PA_SINK_IS_LINKED(s->state));
895 for (i = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); i; i = n) {
896 n = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx));
898 pa_sink_input_ref(i);
900 if (pa_sink_input_start_move(i) >= 0)
903 pa_sink_input_unref(i);
909 /* Called from main context */
910 void pa_sink_move_all_finish(pa_sink *s, pa_queue *q, bool save) {
913 pa_sink_assert_ref(s);
914 pa_assert_ctl_context();
915 pa_assert(PA_SINK_IS_LINKED(s->state));
918 while ((i = PA_SINK_INPUT(pa_queue_pop(q)))) {
919 if (pa_sink_input_finish_move(i, s, save) < 0)
920 pa_sink_input_fail_move(i);
922 pa_sink_input_unref(i);
925 pa_queue_free(q, NULL);
928 /* Called from main context */
929 void pa_sink_move_all_fail(pa_queue *q) {
932 pa_assert_ctl_context();
935 while ((i = PA_SINK_INPUT(pa_queue_pop(q)))) {
936 pa_sink_input_fail_move(i);
937 pa_sink_input_unref(i);
940 pa_queue_free(q, NULL);
943 /* Called from IO thread context */
944 size_t pa_sink_process_input_underruns(pa_sink *s, size_t left_to_play) {
949 pa_sink_assert_ref(s);
950 pa_sink_assert_io_context(s);
952 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state) {
953 size_t uf = i->thread_info.underrun_for_sink;
955 /* Propagate down the filter tree */
956 if (i->origin_sink) {
957 size_t filter_result, left_to_play_origin;
959 /* The recursive call works in the origin sink domain ... */
960 left_to_play_origin = pa_convert_size(left_to_play, &i->sink->sample_spec, &i->origin_sink->sample_spec);
962 /* .. and returns the time to sleep before waking up. We need the
963 * underrun duration for comparisons, so we undo the subtraction on
964 * the return value... */
965 filter_result = left_to_play_origin - pa_sink_process_input_underruns(i->origin_sink, left_to_play_origin);
967 /* ... and convert it back to the master sink domain */
968 filter_result = pa_convert_size(filter_result, &i->origin_sink->sample_spec, &i->sink->sample_spec);
970 /* Remember the longest underrun so far */
971 if (filter_result > result)
972 result = filter_result;
976 /* No underrun here, move on */
978 } else if (uf >= left_to_play) {
979 /* The sink has possibly consumed all the data the sink input provided */
980 pa_sink_input_process_underrun(i);
981 } else if (uf > result) {
982 /* Remember the longest underrun so far */
988 pa_log_debug("%s: Found underrun %ld bytes ago (%ld bytes ahead in playback buffer)", s->name,
989 (long) result, (long) left_to_play - result);
990 return left_to_play - result;
993 /* Called from IO thread context */
994 void pa_sink_process_rewind(pa_sink *s, size_t nbytes) {
998 pa_sink_assert_ref(s);
999 pa_sink_assert_io_context(s);
1000 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1002 /* If nobody requested this and this is actually no real rewind
1003 * then we can short cut this. Please note that this means that
1004 * not all rewind requests triggered upstream will always be
1005 * translated in actual requests! */
1006 if (!s->thread_info.rewind_requested && nbytes <= 0)
1009 s->thread_info.rewind_nbytes = 0;
1010 s->thread_info.rewind_requested = false;
1013 pa_log_debug("Processing rewind...");
1014 if (s->flags & PA_SINK_DEFERRED_VOLUME)
1015 pa_sink_volume_change_rewind(s, nbytes);
1018 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state) {
1019 pa_sink_input_assert_ref(i);
1020 pa_sink_input_process_rewind(i, nbytes);
1024 if (s->monitor_source && PA_SOURCE_IS_LINKED(s->monitor_source->thread_info.state))
1025 pa_source_process_rewind(s->monitor_source, nbytes);
1029 /* Called from IO thread context */
1030 static unsigned fill_mix_info(pa_sink *s, size_t *length, pa_mix_info *info, unsigned maxinfo) {
1034 size_t mixlength = *length;
1036 pa_sink_assert_ref(s);
1037 pa_sink_assert_io_context(s);
1040 while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)) && maxinfo > 0) {
1041 pa_sink_input_assert_ref(i);
1043 pa_sink_input_peek(i, *length, &info->chunk, &info->volume);
1045 if (mixlength == 0 || info->chunk.length < mixlength)
1046 mixlength = info->chunk.length;
1048 if (pa_memblock_is_silence(info->chunk.memblock)) {
1049 pa_memblock_unref(info->chunk.memblock);
1053 info->userdata = pa_sink_input_ref(i);
1055 pa_assert(info->chunk.memblock);
1056 pa_assert(info->chunk.length > 0);
1064 *length = mixlength;
1069 /* Called from IO thread context */
1070 static void inputs_drop(pa_sink *s, pa_mix_info *info, unsigned n, pa_memchunk *result) {
1074 unsigned n_unreffed = 0;
1076 pa_sink_assert_ref(s);
1077 pa_sink_assert_io_context(s);
1079 pa_assert(result->memblock);
1080 pa_assert(result->length > 0);
1082 /* We optimize for the case where the order of the inputs has not changed */
1084 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state) {
1086 pa_mix_info* m = NULL;
1088 pa_sink_input_assert_ref(i);
1090 /* Let's try to find the matching entry info the pa_mix_info array */
1091 for (j = 0; j < n; j ++) {
1093 if (info[p].userdata == i) {
1103 /* Drop read data */
1104 pa_sink_input_drop(i, result->length);
1106 if (s->monitor_source && PA_SOURCE_IS_LINKED(s->monitor_source->thread_info.state)) {
1108 if (pa_hashmap_size(i->thread_info.direct_outputs) > 0) {
1109 void *ostate = NULL;
1110 pa_source_output *o;
1113 if (m && m->chunk.memblock) {
1115 pa_memblock_ref(c.memblock);
1116 pa_assert(result->length <= c.length);
1117 c.length = result->length;
1119 pa_memchunk_make_writable(&c, 0);
1120 pa_volume_memchunk(&c, &s->sample_spec, &m->volume);
1123 pa_memblock_ref(c.memblock);
1124 pa_assert(result->length <= c.length);
1125 c.length = result->length;
1128 while ((o = pa_hashmap_iterate(i->thread_info.direct_outputs, &ostate, NULL))) {
1129 pa_source_output_assert_ref(o);
1130 pa_assert(o->direct_on_input == i);
1131 pa_source_post_direct(s->monitor_source, o, &c);
1134 pa_memblock_unref(c.memblock);
1139 if (m->chunk.memblock) {
1140 pa_memblock_unref(m->chunk.memblock);
1141 pa_memchunk_reset(&m->chunk);
1144 pa_sink_input_unref(m->userdata);
1151 /* Now drop references to entries that are included in the
1152 * pa_mix_info array but don't exist anymore */
1154 if (n_unreffed < n) {
1155 for (; n > 0; info++, n--) {
1157 pa_sink_input_unref(info->userdata);
1158 if (info->chunk.memblock)
1159 pa_memblock_unref(info->chunk.memblock);
1163 if (s->monitor_source && PA_SOURCE_IS_LINKED(s->monitor_source->thread_info.state))
1164 pa_source_post(s->monitor_source, result);
1167 /* Called from IO thread context */
1168 void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result) {
1169 pa_mix_info info[MAX_MIX_CHANNELS];
1171 size_t block_size_max;
1173 pa_sink_assert_ref(s);
1174 pa_sink_assert_io_context(s);
1175 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1176 pa_assert(pa_frame_aligned(length, &s->sample_spec));
1179 pa_assert(!s->thread_info.rewind_requested);
1180 pa_assert(s->thread_info.rewind_nbytes == 0);
1182 if (s->thread_info.state == PA_SINK_SUSPENDED) {
1183 result->memblock = pa_memblock_ref(s->silence.memblock);
1184 result->index = s->silence.index;
1185 result->length = PA_MIN(s->silence.length, length);
1192 length = pa_frame_align(MIX_BUFFER_LENGTH, &s->sample_spec);
1194 block_size_max = pa_mempool_block_size_max(s->core->mempool);
1195 if (length > block_size_max)
1196 length = pa_frame_align(block_size_max, &s->sample_spec);
1198 pa_assert(length > 0);
1200 n = fill_mix_info(s, &length, info, MAX_MIX_CHANNELS);
1204 *result = s->silence;
1205 pa_memblock_ref(result->memblock);
1207 if (result->length > length)
1208 result->length = length;
1210 } else if (n == 1) {
1213 *result = info[0].chunk;
1214 pa_memblock_ref(result->memblock);
1216 if (result->length > length)
1217 result->length = length;
1219 pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume);
1221 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&volume)) {
1222 pa_memblock_unref(result->memblock);
1223 pa_silence_memchunk_get(&s->core->silence_cache,
1228 } else if (!pa_cvolume_is_norm(&volume)) {
1229 pa_memchunk_make_writable(result, 0);
1230 pa_volume_memchunk(result, &s->sample_spec, &volume);
1234 result->memblock = pa_memblock_new(s->core->mempool, length);
1236 ptr = pa_memblock_acquire(result->memblock);
1237 result->length = pa_mix(info, n,
1240 &s->thread_info.soft_volume,
1241 s->thread_info.soft_muted);
1242 pa_memblock_release(result->memblock);
1247 inputs_drop(s, info, n, result);
1252 /* Called from IO thread context */
1253 void pa_sink_render_into(pa_sink*s, pa_memchunk *target) {
1254 pa_mix_info info[MAX_MIX_CHANNELS];
1256 size_t length, block_size_max;
1258 pa_sink_assert_ref(s);
1259 pa_sink_assert_io_context(s);
1260 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1262 pa_assert(target->memblock);
1263 pa_assert(target->length > 0);
1264 pa_assert(pa_frame_aligned(target->length, &s->sample_spec));
1266 pa_assert(!s->thread_info.rewind_requested);
1267 pa_assert(s->thread_info.rewind_nbytes == 0);
1269 if (s->thread_info.state == PA_SINK_SUSPENDED) {
1270 pa_silence_memchunk(target, &s->sample_spec);
1276 length = target->length;
1277 block_size_max = pa_mempool_block_size_max(s->core->mempool);
1278 if (length > block_size_max)
1279 length = pa_frame_align(block_size_max, &s->sample_spec);
1281 pa_assert(length > 0);
1283 n = fill_mix_info(s, &length, info, MAX_MIX_CHANNELS);
1286 if (target->length > length)
1287 target->length = length;
1289 pa_silence_memchunk(target, &s->sample_spec);
1290 } else if (n == 1) {
1293 if (target->length > length)
1294 target->length = length;
1296 pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume);
1298 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&volume))
1299 pa_silence_memchunk(target, &s->sample_spec);
1303 vchunk = info[0].chunk;
1304 pa_memblock_ref(vchunk.memblock);
1306 if (vchunk.length > length)
1307 vchunk.length = length;
1309 if (!pa_cvolume_is_norm(&volume)) {
1310 pa_memchunk_make_writable(&vchunk, 0);
1311 pa_volume_memchunk(&vchunk, &s->sample_spec, &volume);
1314 pa_memchunk_memcpy(target, &vchunk);
1315 pa_memblock_unref(vchunk.memblock);
1321 ptr = pa_memblock_acquire(target->memblock);
1323 target->length = pa_mix(info, n,
1324 (uint8_t*) ptr + target->index, length,
1326 &s->thread_info.soft_volume,
1327 s->thread_info.soft_muted);
1329 pa_memblock_release(target->memblock);
1332 inputs_drop(s, info, n, target);
1337 /* Called from IO thread context */
1338 void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target) {
1342 pa_sink_assert_ref(s);
1343 pa_sink_assert_io_context(s);
1344 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1346 pa_assert(target->memblock);
1347 pa_assert(target->length > 0);
1348 pa_assert(pa_frame_aligned(target->length, &s->sample_spec));
1350 pa_assert(!s->thread_info.rewind_requested);
1351 pa_assert(s->thread_info.rewind_nbytes == 0);
1353 if (s->thread_info.state == PA_SINK_SUSPENDED) {
1354 pa_silence_memchunk(target, &s->sample_spec);
1367 pa_sink_render_into(s, &chunk);
1376 /* Called from IO thread context */
1377 void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result) {
1378 pa_sink_assert_ref(s);
1379 pa_sink_assert_io_context(s);
1380 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1381 pa_assert(length > 0);
1382 pa_assert(pa_frame_aligned(length, &s->sample_spec));
1385 pa_assert(!s->thread_info.rewind_requested);
1386 pa_assert(s->thread_info.rewind_nbytes == 0);
1390 pa_sink_render(s, length, result);
1392 if (result->length < length) {
1395 pa_memchunk_make_writable(result, length);
1397 chunk.memblock = result->memblock;
1398 chunk.index = result->index + result->length;
1399 chunk.length = length - result->length;
1401 pa_sink_render_into_full(s, &chunk);
1403 result->length = length;
1409 /* Called from main thread */
1410 int pa_sink_update_rate(pa_sink *s, uint32_t rate, bool passthrough) {
1412 uint32_t desired_rate = rate;
1413 uint32_t default_rate = s->default_sample_rate;
1414 uint32_t alternate_rate = s->alternate_sample_rate;
1417 bool default_rate_is_usable = false;
1418 bool alternate_rate_is_usable = false;
1420 if (rate == s->sample_spec.rate)
1423 if (!s->update_rate)
1426 if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough)) {
1427 pa_log_debug("Default and alternate sample rates are the same, so there is no point in switching.");
1431 if (PA_SINK_IS_RUNNING(s->state)) {
1432 pa_log_info("Cannot update rate, SINK_IS_RUNNING, will keep using %u Hz",
1433 s->sample_spec.rate);
1437 if (s->monitor_source) {
1438 if (PA_SOURCE_IS_RUNNING(s->monitor_source->state) == true) {
1439 pa_log_info("Cannot update rate, monitor source is RUNNING");
1444 if (PA_UNLIKELY(!pa_sample_rate_valid(desired_rate)))
1447 if (!passthrough && default_rate != desired_rate && alternate_rate != desired_rate) {
1448 if (default_rate % 11025 == 0 && desired_rate % 11025 == 0)
1449 default_rate_is_usable = true;
1450 if (default_rate % 4000 == 0 && desired_rate % 4000 == 0)
1451 default_rate_is_usable = true;
1452 if (alternate_rate && alternate_rate % 11025 == 0 && desired_rate % 11025 == 0)
1453 alternate_rate_is_usable = true;
1454 if (alternate_rate && alternate_rate % 4000 == 0 && desired_rate % 4000 == 0)
1455 alternate_rate_is_usable = true;
1457 if (alternate_rate_is_usable && !default_rate_is_usable)
1458 desired_rate = alternate_rate;
1460 desired_rate = default_rate;
1463 if (desired_rate == s->sample_spec.rate)
1466 if (!passthrough && pa_sink_used_by(s) > 0)
1469 pa_log_debug("Suspending sink %s due to changing the sample rate.", s->name);
1470 pa_sink_suspend(s, true, PA_SUSPEND_INTERNAL);
1472 if (s->update_rate(s, desired_rate) >= 0) {
1473 /* update monitor source as well */
1474 if (s->monitor_source && !passthrough)
1475 pa_source_update_rate(s->monitor_source, desired_rate, false);
1476 pa_log_info("Changed sampling rate successfully");
1478 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1479 if (i->state == PA_SINK_INPUT_CORKED)
1480 pa_sink_input_update_rate(i);
1486 pa_sink_suspend(s, false, PA_SUSPEND_INTERNAL);
1491 /* Called from main thread */
1492 pa_usec_t pa_sink_get_latency(pa_sink *s) {
1495 pa_sink_assert_ref(s);
1496 pa_assert_ctl_context();
1497 pa_assert(PA_SINK_IS_LINKED(s->state));
1499 /* The returned value is supposed to be in the time domain of the sound card! */
1501 if (s->state == PA_SINK_SUSPENDED)
1504 if (!(s->flags & PA_SINK_LATENCY))
1507 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1509 /* usec is unsigned, so check that the offset can be added to usec without
1511 if (-s->latency_offset <= (int64_t) usec)
1512 usec += s->latency_offset;
1519 /* Called from IO thread */
1520 pa_usec_t pa_sink_get_latency_within_thread(pa_sink *s) {
1524 pa_sink_assert_ref(s);
1525 pa_sink_assert_io_context(s);
1526 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1528 /* The returned value is supposed to be in the time domain of the sound card! */
1530 if (s->thread_info.state == PA_SINK_SUSPENDED)
1533 if (!(s->flags & PA_SINK_LATENCY))
1536 o = PA_MSGOBJECT(s);
1538 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1540 if (o->process_msg(o, PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1543 /* usec is unsigned, so check that the offset can be added to usec without
1545 if (-s->thread_info.latency_offset <= (int64_t) usec)
1546 usec += s->thread_info.latency_offset;
1553 /* Called from the main thread (and also from the IO thread while the main
1554 * thread is waiting).
1556 * When a sink uses volume sharing, it never has the PA_SINK_FLAT_VOLUME flag
1557 * set. Instead, flat volume mode is detected by checking whether the root sink
1558 * has the flag set. */
1559 bool pa_sink_flat_volume_enabled(pa_sink *s) {
1560 pa_sink_assert_ref(s);
1562 s = pa_sink_get_master(s);
1565 return (s->flags & PA_SINK_FLAT_VOLUME);
1570 /* Called from the main thread (and also from the IO thread while the main
1571 * thread is waiting). */
1572 pa_sink *pa_sink_get_master(pa_sink *s) {
1573 pa_sink_assert_ref(s);
1575 while (s && (s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
1576 if (PA_UNLIKELY(!s->input_to_master))
1579 s = s->input_to_master->sink;
1585 /* Called from main context */
1586 bool pa_sink_is_filter(pa_sink *s) {
1587 pa_sink_assert_ref(s);
1589 return (s->input_to_master != NULL);
1592 /* Called from main context */
1593 bool pa_sink_is_passthrough(pa_sink *s) {
1594 pa_sink_input *alt_i;
1597 pa_sink_assert_ref(s);
1599 /* one and only one PASSTHROUGH input can possibly be connected */
1600 if (pa_idxset_size(s->inputs) == 1) {
1601 alt_i = pa_idxset_first(s->inputs, &idx);
1603 if (pa_sink_input_is_passthrough(alt_i))
1610 /* Called from main context */
1611 void pa_sink_enter_passthrough(pa_sink *s) {
1614 /* disable the monitor in passthrough mode */
1615 if (s->monitor_source) {
1616 pa_log_debug("Suspending monitor source %s, because the sink is entering the passthrough mode.", s->monitor_source->name);
1617 pa_source_suspend(s->monitor_source, true, PA_SUSPEND_PASSTHROUGH);
1620 /* set the volume to NORM */
1621 s->saved_volume = *pa_sink_get_volume(s, true);
1622 s->saved_save_volume = s->save_volume;
1624 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1625 pa_sink_set_volume(s, &volume, true, false);
1628 /* Called from main context */
1629 void pa_sink_leave_passthrough(pa_sink *s) {
1630 /* Unsuspend monitor */
1631 if (s->monitor_source) {
1632 pa_log_debug("Resuming monitor source %s, because the sink is leaving the passthrough mode.", s->monitor_source->name);
1633 pa_source_suspend(s->monitor_source, false, PA_SUSPEND_PASSTHROUGH);
1636 /* Restore sink volume to what it was before we entered passthrough mode */
1637 pa_sink_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
1639 pa_cvolume_init(&s->saved_volume);
1640 s->saved_save_volume = false;
1643 /* Called from main context. */
1644 static void compute_reference_ratio(pa_sink_input *i) {
1646 pa_cvolume remapped;
1650 pa_assert(pa_sink_flat_volume_enabled(i->sink));
1653 * Calculates the reference ratio from the sink's reference
1654 * volume. This basically calculates:
1656 * i->reference_ratio = i->volume / i->sink->reference_volume
1659 remapped = i->sink->reference_volume;
1660 pa_cvolume_remap(&remapped, &i->sink->channel_map, &i->channel_map);
1662 ratio = i->reference_ratio;
1664 for (c = 0; c < i->sample_spec.channels; c++) {
1666 /* We don't update when the sink volume is 0 anyway */
1667 if (remapped.values[c] <= PA_VOLUME_MUTED)
1670 /* Don't update the reference ratio unless necessary */
1671 if (pa_sw_volume_multiply(
1673 remapped.values[c]) == i->volume.values[c])
1676 ratio.values[c] = pa_sw_volume_divide(
1677 i->volume.values[c],
1678 remapped.values[c]);
1681 pa_sink_input_set_reference_ratio(i, &ratio);
1684 /* Called from main context. Only called for the root sink in volume sharing
1685 * cases, except for internal recursive calls. */
1686 static void compute_reference_ratios(pa_sink *s) {
1690 pa_sink_assert_ref(s);
1691 pa_assert_ctl_context();
1692 pa_assert(PA_SINK_IS_LINKED(s->state));
1693 pa_assert(pa_sink_flat_volume_enabled(s));
1695 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1696 compute_reference_ratio(i);
1698 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER))
1699 compute_reference_ratios(i->origin_sink);
1703 /* Called from main context. Only called for the root sink in volume sharing
1704 * cases, except for internal recursive calls. */
1705 static void compute_real_ratios(pa_sink *s) {
1709 pa_sink_assert_ref(s);
1710 pa_assert_ctl_context();
1711 pa_assert(PA_SINK_IS_LINKED(s->state));
1712 pa_assert(pa_sink_flat_volume_enabled(s));
1714 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1716 pa_cvolume remapped;
1718 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
1719 /* The origin sink uses volume sharing, so this input's real ratio
1720 * is handled as a special case - the real ratio must be 0 dB, and
1721 * as a result i->soft_volume must equal i->volume_factor. */
1722 pa_cvolume_reset(&i->real_ratio, i->real_ratio.channels);
1723 i->soft_volume = i->volume_factor;
1725 compute_real_ratios(i->origin_sink);
1731 * This basically calculates:
1733 * i->real_ratio := i->volume / s->real_volume
1734 * i->soft_volume := i->real_ratio * i->volume_factor
1737 remapped = s->real_volume;
1738 pa_cvolume_remap(&remapped, &s->channel_map, &i->channel_map);
1740 i->real_ratio.channels = i->sample_spec.channels;
1741 i->soft_volume.channels = i->sample_spec.channels;
1743 for (c = 0; c < i->sample_spec.channels; c++) {
1745 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1746 /* We leave i->real_ratio untouched */
1747 i->soft_volume.values[c] = PA_VOLUME_MUTED;
1751 /* Don't lose accuracy unless necessary */
1752 if (pa_sw_volume_multiply(
1753 i->real_ratio.values[c],
1754 remapped.values[c]) != i->volume.values[c])
1756 i->real_ratio.values[c] = pa_sw_volume_divide(
1757 i->volume.values[c],
1758 remapped.values[c]);
1760 i->soft_volume.values[c] = pa_sw_volume_multiply(
1761 i->real_ratio.values[c],
1762 i->volume_factor.values[c]);
1765 /* We don't copy the soft_volume to the thread_info data
1766 * here. That must be done by the caller */
1770 static pa_cvolume *cvolume_remap_minimal_impact(
1772 const pa_cvolume *template,
1773 const pa_channel_map *from,
1774 const pa_channel_map *to) {
1779 pa_assert(template);
1782 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1783 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1785 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1786 * mapping from sink input to sink volumes:
1788 * If template is a possible remapping from v it is used instead
1789 * of remapping anew.
1791 * If the channel maps don't match we set an all-channel volume on
1792 * the sink to ensure that changing a volume on one stream has no
1793 * effect that cannot be compensated for in another stream that
1794 * does not have the same channel map as the sink. */
1796 if (pa_channel_map_equal(from, to))
1800 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1805 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1809 /* Called from main thread. Only called for the root sink in volume sharing
1810 * cases, except for internal recursive calls. */
1811 static void get_maximum_input_volume(pa_sink *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1815 pa_sink_assert_ref(s);
1816 pa_assert(max_volume);
1817 pa_assert(channel_map);
1818 pa_assert(pa_sink_flat_volume_enabled(s));
1820 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1821 pa_cvolume remapped;
1823 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
1824 get_maximum_input_volume(i->origin_sink, max_volume, channel_map);
1826 /* Ignore this input. The origin sink uses volume sharing, so this
1827 * input's volume will be set to be equal to the root sink's real
1828 * volume. Obviously this input's current volume must not then
1829 * affect what the root sink's real volume will be. */
1833 remapped = i->volume;
1834 cvolume_remap_minimal_impact(&remapped, max_volume, &i->channel_map, channel_map);
1835 pa_cvolume_merge(max_volume, max_volume, &remapped);
1839 /* Called from main thread. Only called for the root sink in volume sharing
1840 * cases, except for internal recursive calls. */
1841 static bool has_inputs(pa_sink *s) {
1845 pa_sink_assert_ref(s);
1847 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1848 if (!i->origin_sink || !(i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER) || has_inputs(i->origin_sink))
1855 /* Called from main thread. Only called for the root sink in volume sharing
1856 * cases, except for internal recursive calls. */
1857 static void update_real_volume(pa_sink *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1861 pa_sink_assert_ref(s);
1862 pa_assert(new_volume);
1863 pa_assert(channel_map);
1865 s->real_volume = *new_volume;
1866 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1868 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1869 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
1870 if (pa_sink_flat_volume_enabled(s)) {
1871 pa_cvolume new_input_volume;
1873 /* Follow the root sink's real volume. */
1874 new_input_volume = *new_volume;
1875 pa_cvolume_remap(&new_input_volume, channel_map, &i->channel_map);
1876 pa_sink_input_set_volume_direct(i, &new_input_volume);
1877 compute_reference_ratio(i);
1880 update_real_volume(i->origin_sink, new_volume, channel_map);
1885 /* Called from main thread. Only called for the root sink in shared volume
1887 static void compute_real_volume(pa_sink *s) {
1888 pa_sink_assert_ref(s);
1889 pa_assert_ctl_context();
1890 pa_assert(PA_SINK_IS_LINKED(s->state));
1891 pa_assert(pa_sink_flat_volume_enabled(s));
1892 pa_assert(!(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER));
1894 /* This determines the maximum volume of all streams and sets
1895 * s->real_volume accordingly. */
1897 if (!has_inputs(s)) {
1898 /* In the special case that we have no sink inputs we leave the
1899 * volume unmodified. */
1900 update_real_volume(s, &s->reference_volume, &s->channel_map);
1904 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1906 /* First let's determine the new maximum volume of all inputs
1907 * connected to this sink */
1908 get_maximum_input_volume(s, &s->real_volume, &s->channel_map);
1909 update_real_volume(s, &s->real_volume, &s->channel_map);
1911 /* Then, let's update the real ratios/soft volumes of all inputs
1912 * connected to this sink */
1913 compute_real_ratios(s);
1916 /* Called from main thread. Only called for the root sink in shared volume
1917 * cases, except for internal recursive calls. */
1918 static void propagate_reference_volume(pa_sink *s) {
1922 pa_sink_assert_ref(s);
1923 pa_assert_ctl_context();
1924 pa_assert(PA_SINK_IS_LINKED(s->state));
1925 pa_assert(pa_sink_flat_volume_enabled(s));
1927 /* This is called whenever the sink volume changes that is not
1928 * caused by a sink input volume change. We need to fix up the
1929 * sink input volumes accordingly */
1931 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1932 pa_cvolume new_volume;
1934 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
1935 propagate_reference_volume(i->origin_sink);
1937 /* Since the origin sink uses volume sharing, this input's volume
1938 * needs to be updated to match the root sink's real volume, but
1939 * that will be done later in update_shared_real_volume(). */
1943 /* This basically calculates:
1945 * i->volume := s->reference_volume * i->reference_ratio */
1947 new_volume = s->reference_volume;
1948 pa_cvolume_remap(&new_volume, &s->channel_map, &i->channel_map);
1949 pa_sw_cvolume_multiply(&new_volume, &new_volume, &i->reference_ratio);
1950 pa_sink_input_set_volume_direct(i, &new_volume);
1954 /* Called from main thread. Only called for the root sink in volume sharing
1955 * cases, except for internal recursive calls. The return value indicates
1956 * whether any reference volume actually changed. */
1957 static bool update_reference_volume(pa_sink *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
1959 bool reference_volume_changed;
1963 pa_sink_assert_ref(s);
1964 pa_assert(PA_SINK_IS_LINKED(s->state));
1966 pa_assert(channel_map);
1967 pa_assert(pa_cvolume_valid(v));
1970 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1972 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1973 pa_sink_set_reference_volume_direct(s, &volume);
1975 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1977 if (!reference_volume_changed && !(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER))
1978 /* If the root sink's volume doesn't change, then there can't be any
1979 * changes in the other sinks in the sink tree either.
1981 * It's probably theoretically possible that even if the root sink's
1982 * volume changes slightly, some filter sink doesn't change its volume
1983 * due to rounding errors. If that happens, we still want to propagate
1984 * the changed root sink volume to the sinks connected to the
1985 * intermediate sink that didn't change its volume. This theoretical
1986 * possibility is the reason why we have that !(s->flags &
1987 * PA_SINK_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1988 * notice even if we returned here false always if
1989 * reference_volume_changed is false. */
1992 PA_IDXSET_FOREACH(i, s->inputs, idx) {
1993 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER))
1994 update_reference_volume(i->origin_sink, v, channel_map, false);
2000 /* Called from main thread */
2001 void pa_sink_set_volume(
2003 const pa_cvolume *volume,
2007 pa_cvolume new_reference_volume;
2010 pa_sink_assert_ref(s);
2011 pa_assert_ctl_context();
2012 pa_assert(PA_SINK_IS_LINKED(s->state));
2013 pa_assert(!volume || pa_cvolume_valid(volume));
2014 pa_assert(volume || pa_sink_flat_volume_enabled(s));
2015 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
2017 /* make sure we don't change the volume when a PASSTHROUGH input is connected ...
2018 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
2019 if (pa_sink_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
2020 pa_log_warn("Cannot change volume, Sink is connected to PASSTHROUGH input");
2024 /* In case of volume sharing, the volume is set for the root sink first,
2025 * from which it's then propagated to the sharing sinks. */
2026 root_sink = pa_sink_get_master(s);
2028 if (PA_UNLIKELY(!root_sink))
2031 /* As a special exception we accept mono volumes on all sinks --
2032 * even on those with more complex channel maps */
2035 if (pa_cvolume_compatible(volume, &s->sample_spec))
2036 new_reference_volume = *volume;
2038 new_reference_volume = s->reference_volume;
2039 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
2042 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_sink->channel_map);
2044 if (update_reference_volume(root_sink, &new_reference_volume, &root_sink->channel_map, save)) {
2045 if (pa_sink_flat_volume_enabled(root_sink)) {
2046 /* OK, propagate this volume change back to the inputs */
2047 propagate_reference_volume(root_sink);
2049 /* And now recalculate the real volume */
2050 compute_real_volume(root_sink);
2052 update_real_volume(root_sink, &root_sink->reference_volume, &root_sink->channel_map);
2056 /* If volume is NULL we synchronize the sink's real and
2057 * reference volumes with the stream volumes. */
2059 pa_assert(pa_sink_flat_volume_enabled(root_sink));
2061 /* Ok, let's determine the new real volume */
2062 compute_real_volume(root_sink);
2064 /* Let's 'push' the reference volume if necessary */
2065 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_sink->real_volume);
2066 /* If the sink and its root don't have the same number of channels, we need to remap */
2067 if (s != root_sink && !pa_channel_map_equal(&s->channel_map, &root_sink->channel_map))
2068 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_sink->channel_map);
2069 update_reference_volume(root_sink, &new_reference_volume, &root_sink->channel_map, save);
2071 /* Now that the reference volume is updated, we can update the streams'
2072 * reference ratios. */
2073 compute_reference_ratios(root_sink);
2076 if (root_sink->set_volume) {
2077 /* If we have a function set_volume(), then we do not apply a
2078 * soft volume by default. However, set_volume() is free to
2079 * apply one to root_sink->soft_volume */
2081 pa_cvolume_reset(&root_sink->soft_volume, root_sink->sample_spec.channels);
2082 if (!(root_sink->flags & PA_SINK_DEFERRED_VOLUME))
2083 root_sink->set_volume(root_sink);
2086 /* If we have no function set_volume(), then the soft volume
2087 * becomes the real volume */
2088 root_sink->soft_volume = root_sink->real_volume;
2090 /* This tells the sink that soft volume and/or real volume changed */
2092 pa_assert_se(pa_asyncmsgq_send(root_sink->asyncmsgq, PA_MSGOBJECT(root_sink), PA_SINK_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
2095 /* Called from the io thread if sync volume is used, otherwise from the main thread.
2096 * Only to be called by sink implementor */
2097 void pa_sink_set_soft_volume(pa_sink *s, const pa_cvolume *volume) {
2099 pa_sink_assert_ref(s);
2100 pa_assert(!(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER));
2102 if (s->flags & PA_SINK_DEFERRED_VOLUME)
2103 pa_sink_assert_io_context(s);
2105 pa_assert_ctl_context();
2108 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
2110 s->soft_volume = *volume;
2112 if (PA_SINK_IS_LINKED(s->state) && !(s->flags & PA_SINK_DEFERRED_VOLUME))
2113 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
2115 s->thread_info.soft_volume = s->soft_volume;
2118 /* Called from the main thread. Only called for the root sink in volume sharing
2119 * cases, except for internal recursive calls. */
2120 static void propagate_real_volume(pa_sink *s, const pa_cvolume *old_real_volume) {
2124 pa_sink_assert_ref(s);
2125 pa_assert(old_real_volume);
2126 pa_assert_ctl_context();
2127 pa_assert(PA_SINK_IS_LINKED(s->state));
2129 /* This is called when the hardware's real volume changes due to
2130 * some external event. We copy the real volume into our
2131 * reference volume and then rebuild the stream volumes based on
2132 * i->real_ratio which should stay fixed. */
2134 if (!(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
2135 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
2138 /* 1. Make the real volume the reference volume */
2139 update_reference_volume(s, &s->real_volume, &s->channel_map, true);
2142 if (pa_sink_flat_volume_enabled(s)) {
2144 PA_IDXSET_FOREACH(i, s->inputs, idx) {
2145 pa_cvolume new_volume;
2147 /* 2. Since the sink's reference and real volumes are equal
2148 * now our ratios should be too. */
2149 pa_sink_input_set_reference_ratio(i, &i->real_ratio);
2151 /* 3. Recalculate the new stream reference volume based on the
2152 * reference ratio and the sink's reference volume.
2154 * This basically calculates:
2156 * i->volume = s->reference_volume * i->reference_ratio
2158 * This is identical to propagate_reference_volume() */
2159 new_volume = s->reference_volume;
2160 pa_cvolume_remap(&new_volume, &s->channel_map, &i->channel_map);
2161 pa_sw_cvolume_multiply(&new_volume, &new_volume, &i->reference_ratio);
2162 pa_sink_input_set_volume_direct(i, &new_volume);
2164 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER))
2165 propagate_real_volume(i->origin_sink, old_real_volume);
2169 /* Something got changed in the hardware. It probably makes sense
2170 * to save changed hw settings given that hw volume changes not
2171 * triggered by PA are almost certainly done by the user. */
2172 if (!(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER))
2173 s->save_volume = true;
2176 /* Called from io thread */
2177 void pa_sink_update_volume_and_mute(pa_sink *s) {
2179 pa_sink_assert_io_context(s);
2181 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
2184 /* Called from main thread */
2185 const pa_cvolume *pa_sink_get_volume(pa_sink *s, bool force_refresh) {
2186 pa_sink_assert_ref(s);
2187 pa_assert_ctl_context();
2188 pa_assert(PA_SINK_IS_LINKED(s->state));
2190 if (s->refresh_volume || force_refresh) {
2191 struct pa_cvolume old_real_volume;
2193 pa_assert(!(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER));
2195 old_real_volume = s->real_volume;
2197 if (!(s->flags & PA_SINK_DEFERRED_VOLUME) && s->get_volume)
2200 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
2202 update_real_volume(s, &s->real_volume, &s->channel_map);
2203 propagate_real_volume(s, &old_real_volume);
2206 return &s->reference_volume;
2209 /* Called from main thread. In volume sharing cases, only the root sink may
2211 void pa_sink_volume_changed(pa_sink *s, const pa_cvolume *new_real_volume) {
2212 pa_cvolume old_real_volume;
2214 pa_sink_assert_ref(s);
2215 pa_assert_ctl_context();
2216 pa_assert(PA_SINK_IS_LINKED(s->state));
2217 pa_assert(!(s->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER));
2219 /* The sink implementor may call this if the volume changed to make sure everyone is notified */
2221 old_real_volume = s->real_volume;
2222 update_real_volume(s, new_real_volume, &s->channel_map);
2223 propagate_real_volume(s, &old_real_volume);
2226 /* Called from main thread */
2227 void pa_sink_set_mute(pa_sink *s, bool mute, bool save) {
2230 pa_sink_assert_ref(s);
2231 pa_assert_ctl_context();
2233 old_muted = s->muted;
2235 if (mute == old_muted) {
2236 s->save_muted |= save;
2241 s->save_muted = save;
2243 if (!(s->flags & PA_SINK_DEFERRED_VOLUME) && s->set_mute) {
2244 s->set_mute_in_progress = true;
2246 s->set_mute_in_progress = false;
2249 if (!PA_SINK_IS_LINKED(s->state))
2252 pa_log_debug("The mute of sink %s changed from %s to %s.", s->name, pa_yes_no(old_muted), pa_yes_no(mute));
2253 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
2254 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2255 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_MUTE_CHANGED], s);
2258 /* Called from main thread */
2259 bool pa_sink_get_mute(pa_sink *s, bool force_refresh) {
2261 pa_sink_assert_ref(s);
2262 pa_assert_ctl_context();
2263 pa_assert(PA_SINK_IS_LINKED(s->state));
2265 if ((s->refresh_muted || force_refresh) && s->get_mute) {
2268 if (s->flags & PA_SINK_DEFERRED_VOLUME) {
2269 if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MUTE, &mute, 0, NULL) >= 0)
2270 pa_sink_mute_changed(s, mute);
2272 if (s->get_mute(s, &mute) >= 0)
2273 pa_sink_mute_changed(s, mute);
2280 /* Called from main thread */
2281 void pa_sink_mute_changed(pa_sink *s, bool new_muted) {
2282 pa_sink_assert_ref(s);
2283 pa_assert_ctl_context();
2284 pa_assert(PA_SINK_IS_LINKED(s->state));
2286 if (s->set_mute_in_progress)
2289 /* pa_sink_set_mute() does this same check, so this may appear redundant,
2290 * but we must have this here also, because the save parameter of
2291 * pa_sink_set_mute() would otherwise have unintended side effects (saving
2292 * the mute state when it shouldn't be saved). */
2293 if (new_muted == s->muted)
2296 pa_sink_set_mute(s, new_muted, true);
2299 /* Called from main thread */
2300 bool pa_sink_update_proplist(pa_sink *s, pa_update_mode_t mode, pa_proplist *p) {
2301 pa_sink_assert_ref(s);
2302 pa_assert_ctl_context();
2305 pa_proplist_update(s->proplist, mode, p);
2307 if (PA_SINK_IS_LINKED(s->state)) {
2308 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PROPLIST_CHANGED], s);
2309 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2315 /* Called from main thread */
2316 /* FIXME -- this should be dropped and be merged into pa_sink_update_proplist() */
2317 void pa_sink_set_description(pa_sink *s, const char *description) {
2319 pa_sink_assert_ref(s);
2320 pa_assert_ctl_context();
2322 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
2325 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
2327 if (old && description && pa_streq(old, description))
2331 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
2333 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
2335 if (s->monitor_source) {
2338 n = pa_sprintf_malloc("Monitor Source of %s", description ? description : s->name);
2339 pa_source_set_description(s->monitor_source, n);
2343 if (PA_SINK_IS_LINKED(s->state)) {
2344 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2345 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PROPLIST_CHANGED], s);
2349 /* Called from main thread */
2350 unsigned pa_sink_linked_by(pa_sink *s) {
2353 pa_sink_assert_ref(s);
2354 pa_assert_ctl_context();
2355 pa_assert(PA_SINK_IS_LINKED(s->state));
2357 ret = pa_idxset_size(s->inputs);
2359 /* We add in the number of streams connected to us here. Please
2360 * note the asymmetry to pa_sink_used_by()! */
2362 if (s->monitor_source)
2363 ret += pa_source_linked_by(s->monitor_source);
2368 /* Called from main thread */
2369 unsigned pa_sink_used_by(pa_sink *s) {
2372 pa_sink_assert_ref(s);
2373 pa_assert_ctl_context();
2374 pa_assert(PA_SINK_IS_LINKED(s->state));
2376 ret = pa_idxset_size(s->inputs);
2377 pa_assert(ret >= s->n_corked);
2379 /* Streams connected to our monitor source do not matter for
2380 * pa_sink_used_by()!.*/
2382 return ret - s->n_corked;
2385 /* Called from main thread */
2386 unsigned pa_sink_check_suspend(pa_sink *s) {
2391 pa_sink_assert_ref(s);
2392 pa_assert_ctl_context();
2394 if (!PA_SINK_IS_LINKED(s->state))
2399 PA_IDXSET_FOREACH(i, s->inputs, idx) {
2400 pa_sink_input_state_t st;
2402 st = pa_sink_input_get_state(i);
2404 /* We do not assert here. It is perfectly valid for a sink input to
2405 * be in the INIT state (i.e. created, marked done but not yet put)
2406 * and we should not care if it's unlinked as it won't contribute
2407 * towards our busy status.
2409 if (!PA_SINK_INPUT_IS_LINKED(st))
2412 if (st == PA_SINK_INPUT_CORKED)
2415 if (i->flags & PA_SINK_INPUT_DONT_INHIBIT_AUTO_SUSPEND)
2421 if (s->monitor_source)
2422 ret += pa_source_check_suspend(s->monitor_source);
2427 /* Called from the IO thread */
2428 static void sync_input_volumes_within_thread(pa_sink *s) {
2432 pa_sink_assert_ref(s);
2433 pa_sink_assert_io_context(s);
2435 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state) {
2436 if (pa_cvolume_equal(&i->thread_info.soft_volume, &i->soft_volume))
2439 i->thread_info.soft_volume = i->soft_volume;
2440 pa_sink_input_request_rewind(i, 0, true, false, false);
2444 /* Called from the IO thread. Only called for the root sink in volume sharing
2445 * cases, except for internal recursive calls. */
2446 static void set_shared_volume_within_thread(pa_sink *s) {
2447 pa_sink_input *i = NULL;
2450 pa_sink_assert_ref(s);
2452 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
2454 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state) {
2455 if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER))
2456 set_shared_volume_within_thread(i->origin_sink);
2460 /* Called from IO thread, except when it is not */
2461 int pa_sink_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
2462 pa_sink *s = PA_SINK(o);
2463 pa_sink_assert_ref(s);
2465 switch ((pa_sink_message_t) code) {
2467 case PA_SINK_MESSAGE_ADD_INPUT: {
2468 pa_sink_input *i = PA_SINK_INPUT(userdata);
2470 /* If you change anything here, make sure to change the
2471 * sink input handling a few lines down at
2472 * PA_SINK_MESSAGE_FINISH_MOVE, too. */
2474 pa_hashmap_put(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index), pa_sink_input_ref(i));
2476 /* Since the caller sleeps in pa_sink_input_put(), we can
2477 * safely access data outside of thread_info even though
2480 if ((i->thread_info.sync_prev = i->sync_prev)) {
2481 pa_assert(i->sink == i->thread_info.sync_prev->sink);
2482 pa_assert(i->sync_prev->sync_next == i);
2483 i->thread_info.sync_prev->thread_info.sync_next = i;
2486 if ((i->thread_info.sync_next = i->sync_next)) {
2487 pa_assert(i->sink == i->thread_info.sync_next->sink);
2488 pa_assert(i->sync_next->sync_prev == i);
2489 i->thread_info.sync_next->thread_info.sync_prev = i;
2492 pa_assert(!i->thread_info.attached);
2493 i->thread_info.attached = true;
2498 pa_sink_input_set_state_within_thread(i, i->state);
2500 /* The requested latency of the sink input needs to be fixed up and
2501 * then configured on the sink. If this causes the sink latency to
2502 * go down, the sink implementor is responsible for doing a rewind
2503 * in the update_requested_latency() callback to ensure that the
2504 * sink buffer doesn't contain more data than what the new latency
2507 * XXX: Does it really make sense to push this responsibility to
2508 * the sink implementors? Wouldn't it be better to do it once in
2509 * the core than many times in the modules? */
2511 if (i->thread_info.requested_sink_latency != (pa_usec_t) -1)
2512 pa_sink_input_set_requested_latency_within_thread(i, i->thread_info.requested_sink_latency);
2514 pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind);
2515 pa_sink_input_update_max_request(i, s->thread_info.max_request);
2517 /* We don't rewind here automatically. This is left to the
2518 * sink input implementor because some sink inputs need a
2519 * slow start, i.e. need some time to buffer client
2520 * samples before beginning streaming.
2522 * XXX: Does it really make sense to push this functionality to
2523 * the sink implementors? Wouldn't it be better to do it once in
2524 * the core than many times in the modules? */
2526 /* In flat volume mode we need to update the volume as
2528 return o->process_msg(o, PA_SINK_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2531 case PA_SINK_MESSAGE_REMOVE_INPUT: {
2532 pa_sink_input *i = PA_SINK_INPUT(userdata);
2534 /* If you change anything here, make sure to change the
2535 * sink input handling a few lines down at
2536 * PA_SINK_MESSAGE_START_MOVE, too. */
2541 pa_sink_input_set_state_within_thread(i, i->state);
2543 pa_assert(i->thread_info.attached);
2544 i->thread_info.attached = false;
2546 /* Since the caller sleeps in pa_sink_input_unlink(),
2547 * we can safely access data outside of thread_info even
2548 * though it is mutable */
2550 pa_assert(!i->sync_prev);
2551 pa_assert(!i->sync_next);
2553 if (i->thread_info.sync_prev) {
2554 i->thread_info.sync_prev->thread_info.sync_next = i->thread_info.sync_prev->sync_next;
2555 i->thread_info.sync_prev = NULL;
2558 if (i->thread_info.sync_next) {
2559 i->thread_info.sync_next->thread_info.sync_prev = i->thread_info.sync_next->sync_prev;
2560 i->thread_info.sync_next = NULL;
2563 pa_hashmap_remove_and_free(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index));
2564 pa_sink_invalidate_requested_latency(s, true);
2565 pa_sink_request_rewind(s, (size_t) -1);
2567 /* In flat volume mode we need to update the volume as
2569 return o->process_msg(o, PA_SINK_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2572 case PA_SINK_MESSAGE_START_MOVE: {
2573 pa_sink_input *i = PA_SINK_INPUT(userdata);
2575 /* We don't support moving synchronized streams. */
2576 pa_assert(!i->sync_prev);
2577 pa_assert(!i->sync_next);
2578 pa_assert(!i->thread_info.sync_next);
2579 pa_assert(!i->thread_info.sync_prev);
2581 if (i->thread_info.state != PA_SINK_INPUT_CORKED) {
2583 size_t sink_nbytes, total_nbytes;
2585 /* The old sink probably has some audio from this
2586 * stream in its buffer. We want to "take it back" as
2587 * much as possible and play it to the new sink. We
2588 * don't know at this point how much the old sink can
2589 * rewind. We have to pick something, and that
2590 * something is the full latency of the old sink here.
2591 * So we rewind the stream buffer by the sink latency
2592 * amount, which may be more than what we should
2593 * rewind. This can result in a chunk of audio being
2594 * played both to the old sink and the new sink.
2596 * FIXME: Fix this code so that we don't have to make
2597 * guesses about how much the sink will actually be
2598 * able to rewind. If someone comes up with a solution
2599 * for this, something to note is that the part of the
2600 * latency that the old sink couldn't rewind should
2601 * ideally be compensated after the stream has moved
2602 * to the new sink by adding silence. The new sink
2603 * most likely can't start playing the moved stream
2604 * immediately, and that gap should be removed from
2605 * the "compensation silence" (at least at the time of
2606 * writing this, the move finish code will actually
2607 * already take care of dropping the new sink's
2608 * unrewindable latency, so taking into account the
2609 * unrewindable latency of the old sink is the only
2612 * The render_memblockq contents are discarded,
2613 * because when the sink changes, the format of the
2614 * audio stored in the render_memblockq may change
2615 * too, making the stored audio invalid. FIXME:
2616 * However, the read and write indices are moved back
2617 * the same amount, so if they are not the same now,
2618 * they won't be the same after the rewind either. If
2619 * the write index of the render_memblockq is ahead of
2620 * the read index, then the render_memblockq will feed
2621 * the new sink some silence first, which it shouldn't
2622 * do. The write index should be flushed to be the
2623 * same as the read index. */
2625 /* Get the latency of the sink */
2626 usec = pa_sink_get_latency_within_thread(s);
2627 sink_nbytes = pa_usec_to_bytes(usec, &s->sample_spec);
2628 total_nbytes = sink_nbytes + pa_memblockq_get_length(i->thread_info.render_memblockq);
2630 if (total_nbytes > 0) {
2631 i->thread_info.rewrite_nbytes = i->thread_info.resampler ? pa_resampler_request(i->thread_info.resampler, total_nbytes) : total_nbytes;
2632 i->thread_info.rewrite_flush = true;
2633 pa_sink_input_process_rewind(i, sink_nbytes);
2640 pa_assert(i->thread_info.attached);
2641 i->thread_info.attached = false;
2643 /* Let's remove the sink input ...*/
2644 pa_hashmap_remove_and_free(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index));
2646 pa_sink_invalidate_requested_latency(s, true);
2648 pa_log_debug("Requesting rewind due to started move");
2649 pa_sink_request_rewind(s, (size_t) -1);
2651 /* In flat volume mode we need to update the volume as
2653 return o->process_msg(o, PA_SINK_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2656 case PA_SINK_MESSAGE_FINISH_MOVE: {
2657 pa_sink_input *i = PA_SINK_INPUT(userdata);
2659 /* We don't support moving synchronized streams. */
2660 pa_assert(!i->sync_prev);
2661 pa_assert(!i->sync_next);
2662 pa_assert(!i->thread_info.sync_next);
2663 pa_assert(!i->thread_info.sync_prev);
2665 pa_hashmap_put(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index), pa_sink_input_ref(i));
2667 pa_assert(!i->thread_info.attached);
2668 i->thread_info.attached = true;
2673 if (i->thread_info.state != PA_SINK_INPUT_CORKED) {
2677 /* In the ideal case the new sink would start playing
2678 * the stream immediately. That requires the sink to
2679 * be able to rewind all of its latency, which usually
2680 * isn't possible, so there will probably be some gap
2681 * before the moved stream becomes audible. We then
2682 * have two possibilities: 1) start playing the stream
2683 * from where it is now, or 2) drop the unrewindable
2684 * latency of the sink from the stream. With option 1
2685 * we won't lose any audio but the stream will have a
2686 * pause. With option 2 we may lose some audio but the
2687 * stream time will be somewhat in sync with the wall
2688 * clock. Lennart seems to have chosen option 2 (one
2689 * of the reasons might have been that option 1 is
2690 * actually much harder to implement), so we drop the
2691 * latency of the new sink from the moved stream and
2692 * hope that the sink will undo most of that in the
2695 /* Get the latency of the sink */
2696 usec = pa_sink_get_latency_within_thread(s);
2697 nbytes = pa_usec_to_bytes(usec, &s->sample_spec);
2700 pa_sink_input_drop(i, nbytes);
2702 pa_log_debug("Requesting rewind due to finished move");
2703 pa_sink_request_rewind(s, nbytes);
2706 /* Updating the requested sink latency has to be done
2707 * after the sink rewind request, not before, because
2708 * otherwise the sink may limit the rewind amount
2711 if (i->thread_info.requested_sink_latency != (pa_usec_t) -1)
2712 pa_sink_input_set_requested_latency_within_thread(i, i->thread_info.requested_sink_latency);
2714 pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind);
2715 pa_sink_input_update_max_request(i, s->thread_info.max_request);
2717 return o->process_msg(o, PA_SINK_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2720 case PA_SINK_MESSAGE_SET_SHARED_VOLUME: {
2721 pa_sink *root_sink = pa_sink_get_master(s);
2723 if (PA_LIKELY(root_sink))
2724 set_shared_volume_within_thread(root_sink);
2729 case PA_SINK_MESSAGE_SET_VOLUME_SYNCED:
2731 if (s->flags & PA_SINK_DEFERRED_VOLUME) {
2733 pa_sink_volume_change_push(s);
2735 /* Fall through ... */
2737 case PA_SINK_MESSAGE_SET_VOLUME:
2739 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2740 s->thread_info.soft_volume = s->soft_volume;
2741 pa_sink_request_rewind(s, (size_t) -1);
2744 /* Fall through ... */
2746 case PA_SINK_MESSAGE_SYNC_VOLUMES:
2747 sync_input_volumes_within_thread(s);
2750 case PA_SINK_MESSAGE_GET_VOLUME:
2752 if ((s->flags & PA_SINK_DEFERRED_VOLUME) && s->get_volume) {
2754 pa_sink_volume_change_flush(s);
2755 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2758 /* In case sink implementor reset SW volume. */
2759 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2760 s->thread_info.soft_volume = s->soft_volume;
2761 pa_sink_request_rewind(s, (size_t) -1);
2766 case PA_SINK_MESSAGE_SET_MUTE:
2768 if (s->thread_info.soft_muted != s->muted) {
2769 s->thread_info.soft_muted = s->muted;
2770 pa_sink_request_rewind(s, (size_t) -1);
2773 if (s->flags & PA_SINK_DEFERRED_VOLUME && s->set_mute)
2778 case PA_SINK_MESSAGE_GET_MUTE:
2780 if (s->flags & PA_SINK_DEFERRED_VOLUME && s->get_mute)
2781 return s->get_mute(s, userdata);
2785 case PA_SINK_MESSAGE_SET_STATE: {
2787 bool suspend_change =
2788 (s->thread_info.state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2789 (PA_SINK_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SINK_SUSPENDED);
2791 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2793 if (s->thread_info.state == PA_SINK_SUSPENDED) {
2794 s->thread_info.rewind_nbytes = 0;
2795 s->thread_info.rewind_requested = false;
2798 if (suspend_change) {
2802 while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)))
2803 if (i->suspend_within_thread)
2804 i->suspend_within_thread(i, s->thread_info.state == PA_SINK_SUSPENDED);
2810 case PA_SINK_MESSAGE_GET_REQUESTED_LATENCY: {
2812 pa_usec_t *usec = userdata;
2813 *usec = pa_sink_get_requested_latency_within_thread(s);
2815 /* Yes, that's right, the IO thread will see -1 when no
2816 * explicit requested latency is configured, the main
2817 * thread will see max_latency */
2818 if (*usec == (pa_usec_t) -1)
2819 *usec = s->thread_info.max_latency;
2824 case PA_SINK_MESSAGE_SET_LATENCY_RANGE: {
2825 pa_usec_t *r = userdata;
2827 pa_sink_set_latency_range_within_thread(s, r[0], r[1]);
2832 case PA_SINK_MESSAGE_GET_LATENCY_RANGE: {
2833 pa_usec_t *r = userdata;
2835 r[0] = s->thread_info.min_latency;
2836 r[1] = s->thread_info.max_latency;
2841 case PA_SINK_MESSAGE_GET_FIXED_LATENCY:
2843 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2846 case PA_SINK_MESSAGE_SET_FIXED_LATENCY:
2848 pa_sink_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2851 case PA_SINK_MESSAGE_GET_MAX_REWIND:
2853 *((size_t*) userdata) = s->thread_info.max_rewind;
2856 case PA_SINK_MESSAGE_GET_MAX_REQUEST:
2858 *((size_t*) userdata) = s->thread_info.max_request;
2861 case PA_SINK_MESSAGE_SET_MAX_REWIND:
2863 pa_sink_set_max_rewind_within_thread(s, (size_t) offset);
2866 case PA_SINK_MESSAGE_SET_MAX_REQUEST:
2868 pa_sink_set_max_request_within_thread(s, (size_t) offset);
2871 case PA_SINK_MESSAGE_SET_PORT:
2873 pa_assert(userdata);
2875 struct sink_message_set_port *msg_data = userdata;
2876 msg_data->ret = s->set_port(s, msg_data->port);
2880 case PA_SINK_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2881 /* This message is sent from IO-thread and handled in main thread. */
2882 pa_assert_ctl_context();
2884 /* Make sure we're not messing with main thread when no longer linked */
2885 if (!PA_SINK_IS_LINKED(s->state))
2888 pa_sink_get_volume(s, true);
2889 pa_sink_get_mute(s, true);
2892 case PA_SINK_MESSAGE_SET_LATENCY_OFFSET:
2893 s->thread_info.latency_offset = offset;
2896 case PA_SINK_MESSAGE_GET_LATENCY:
2897 case PA_SINK_MESSAGE_MAX:
2904 /* Called from main thread */
2905 int pa_sink_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
2910 pa_core_assert_ref(c);
2911 pa_assert_ctl_context();
2912 pa_assert(cause != 0);
2914 PA_IDXSET_FOREACH(sink, c->sinks, idx) {
2917 if ((r = pa_sink_suspend(sink, suspend, cause)) < 0)
2924 /* Called from IO thread */
2925 void pa_sink_detach_within_thread(pa_sink *s) {
2929 pa_sink_assert_ref(s);
2930 pa_sink_assert_io_context(s);
2931 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
2933 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2937 if (s->monitor_source)
2938 pa_source_detach_within_thread(s->monitor_source);
2941 /* Called from IO thread */
2942 void pa_sink_attach_within_thread(pa_sink *s) {
2946 pa_sink_assert_ref(s);
2947 pa_sink_assert_io_context(s);
2948 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
2950 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2954 if (s->monitor_source)
2955 pa_source_attach_within_thread(s->monitor_source);
2958 /* Called from IO thread */
2959 void pa_sink_request_rewind(pa_sink*s, size_t nbytes) {
2960 pa_sink_assert_ref(s);
2961 pa_sink_assert_io_context(s);
2962 pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
2964 if (nbytes == (size_t) -1)
2965 nbytes = s->thread_info.max_rewind;
2967 nbytes = PA_MIN(nbytes, s->thread_info.max_rewind);
2969 if (s->thread_info.rewind_requested &&
2970 nbytes <= s->thread_info.rewind_nbytes)
2973 s->thread_info.rewind_nbytes = nbytes;
2974 s->thread_info.rewind_requested = true;
2976 if (s->request_rewind)
2977 s->request_rewind(s);
2980 /* Called from IO thread */
2981 pa_usec_t pa_sink_get_requested_latency_within_thread(pa_sink *s) {
2982 pa_usec_t result = (pa_usec_t) -1;
2985 pa_usec_t monitor_latency;
2987 pa_sink_assert_ref(s);
2988 pa_sink_assert_io_context(s);
2990 if (!(s->flags & PA_SINK_DYNAMIC_LATENCY))
2991 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2993 if (s->thread_info.requested_latency_valid)
2994 return s->thread_info.requested_latency;
2996 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2997 if (i->thread_info.requested_sink_latency != (pa_usec_t) -1 &&
2998 (result == (pa_usec_t) -1 || result > i->thread_info.requested_sink_latency))
2999 result = i->thread_info.requested_sink_latency;
3001 monitor_latency = pa_source_get_requested_latency_within_thread(s->monitor_source);
3003 if (monitor_latency != (pa_usec_t) -1 &&
3004 (result == (pa_usec_t) -1 || result > monitor_latency))
3005 result = monitor_latency;
3007 if (result != (pa_usec_t) -1)
3008 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
3010 if (PA_SINK_IS_LINKED(s->thread_info.state)) {
3011 /* Only cache if properly initialized */
3012 s->thread_info.requested_latency = result;
3013 s->thread_info.requested_latency_valid = true;
3019 /* Called from main thread */
3020 pa_usec_t pa_sink_get_requested_latency(pa_sink *s) {
3023 pa_sink_assert_ref(s);
3024 pa_assert_ctl_context();
3025 pa_assert(PA_SINK_IS_LINKED(s->state));
3027 if (s->state == PA_SINK_SUSPENDED)
3030 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
3035 /* Called from IO as well as the main thread -- the latter only before the IO thread started up */
3036 void pa_sink_set_max_rewind_within_thread(pa_sink *s, size_t max_rewind) {
3040 pa_sink_assert_ref(s);
3041 pa_sink_assert_io_context(s);
3043 if (max_rewind == s->thread_info.max_rewind)
3046 s->thread_info.max_rewind = max_rewind;
3048 if (PA_SINK_IS_LINKED(s->thread_info.state))
3049 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
3050 pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind);
3052 if (s->monitor_source)
3053 pa_source_set_max_rewind_within_thread(s->monitor_source, s->thread_info.max_rewind);
3056 /* Called from main thread */
3057 void pa_sink_set_max_rewind(pa_sink *s, size_t max_rewind) {
3058 pa_sink_assert_ref(s);
3059 pa_assert_ctl_context();
3061 if (PA_SINK_IS_LINKED(s->state))
3062 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
3064 pa_sink_set_max_rewind_within_thread(s, max_rewind);
3067 /* Called from IO as well as the main thread -- the latter only before the IO thread started up */
3068 void pa_sink_set_max_request_within_thread(pa_sink *s, size_t max_request) {
3071 pa_sink_assert_ref(s);
3072 pa_sink_assert_io_context(s);
3074 if (max_request == s->thread_info.max_request)
3077 s->thread_info.max_request = max_request;
3079 if (PA_SINK_IS_LINKED(s->thread_info.state)) {
3082 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
3083 pa_sink_input_update_max_request(i, s->thread_info.max_request);
3087 /* Called from main thread */
3088 void pa_sink_set_max_request(pa_sink *s, size_t max_request) {
3089 pa_sink_assert_ref(s);
3090 pa_assert_ctl_context();
3092 if (PA_SINK_IS_LINKED(s->state))
3093 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MAX_REQUEST, NULL, max_request, NULL) == 0);
3095 pa_sink_set_max_request_within_thread(s, max_request);
3098 /* Called from IO thread */
3099 void pa_sink_invalidate_requested_latency(pa_sink *s, bool dynamic) {
3103 pa_sink_assert_ref(s);
3104 pa_sink_assert_io_context(s);
3106 if ((s->flags & PA_SINK_DYNAMIC_LATENCY))
3107 s->thread_info.requested_latency_valid = false;
3111 if (PA_SINK_IS_LINKED(s->thread_info.state)) {
3113 if (s->update_requested_latency)
3114 s->update_requested_latency(s);
3116 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
3117 if (i->update_sink_requested_latency)
3118 i->update_sink_requested_latency(i);
3122 /* Called from main thread */
3123 void pa_sink_set_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency) {
3124 pa_sink_assert_ref(s);
3125 pa_assert_ctl_context();
3127 /* min_latency == 0: no limit
3128 * min_latency anything else: specified limit
3130 * Similar for max_latency */
3132 if (min_latency < ABSOLUTE_MIN_LATENCY)
3133 min_latency = ABSOLUTE_MIN_LATENCY;
3135 if (max_latency <= 0 ||
3136 max_latency > ABSOLUTE_MAX_LATENCY)
3137 max_latency = ABSOLUTE_MAX_LATENCY;
3139 pa_assert(min_latency <= max_latency);
3141 /* Hmm, let's see if someone forgot to set PA_SINK_DYNAMIC_LATENCY here... */
3142 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
3143 max_latency == ABSOLUTE_MAX_LATENCY) ||
3144 (s->flags & PA_SINK_DYNAMIC_LATENCY));
3146 if (PA_SINK_IS_LINKED(s->state)) {
3152 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
3154 pa_sink_set_latency_range_within_thread(s, min_latency, max_latency);
3157 /* Called from main thread */
3158 void pa_sink_get_latency_range(pa_sink *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
3159 pa_sink_assert_ref(s);
3160 pa_assert_ctl_context();
3161 pa_assert(min_latency);
3162 pa_assert(max_latency);
3164 if (PA_SINK_IS_LINKED(s->state)) {
3165 pa_usec_t r[2] = { 0, 0 };
3167 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
3169 *min_latency = r[0];
3170 *max_latency = r[1];
3172 *min_latency = s->thread_info.min_latency;
3173 *max_latency = s->thread_info.max_latency;
3177 /* Called from IO thread */
3178 void pa_sink_set_latency_range_within_thread(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency) {
3179 pa_sink_assert_ref(s);
3180 pa_sink_assert_io_context(s);
3182 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
3183 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
3184 pa_assert(min_latency <= max_latency);
3186 /* Hmm, let's see if someone forgot to set PA_SINK_DYNAMIC_LATENCY here... */
3187 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
3188 max_latency == ABSOLUTE_MAX_LATENCY) ||
3189 (s->flags & PA_SINK_DYNAMIC_LATENCY));
3191 if (s->thread_info.min_latency == min_latency &&
3192 s->thread_info.max_latency == max_latency)
3195 s->thread_info.min_latency = min_latency;
3196 s->thread_info.max_latency = max_latency;
3198 if (PA_SINK_IS_LINKED(s->thread_info.state)) {
3202 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
3203 if (i->update_sink_latency_range)
3204 i->update_sink_latency_range(i);
3207 pa_sink_invalidate_requested_latency(s, false);
3209 pa_source_set_latency_range_within_thread(s->monitor_source, min_latency, max_latency);
3212 /* Called from main thread */
3213 void pa_sink_set_fixed_latency(pa_sink *s, pa_usec_t latency) {
3214 pa_sink_assert_ref(s);
3215 pa_assert_ctl_context();
3217 if (s->flags & PA_SINK_DYNAMIC_LATENCY) {
3218 pa_assert(latency == 0);
3222 if (latency < ABSOLUTE_MIN_LATENCY)
3223 latency = ABSOLUTE_MIN_LATENCY;
3225 if (latency > ABSOLUTE_MAX_LATENCY)
3226 latency = ABSOLUTE_MAX_LATENCY;
3228 if (PA_SINK_IS_LINKED(s->state))
3229 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
3231 s->thread_info.fixed_latency = latency;
3233 pa_source_set_fixed_latency(s->monitor_source, latency);
3236 /* Called from main thread */
3237 pa_usec_t pa_sink_get_fixed_latency(pa_sink *s) {
3240 pa_sink_assert_ref(s);
3241 pa_assert_ctl_context();
3243 if (s->flags & PA_SINK_DYNAMIC_LATENCY)
3246 if (PA_SINK_IS_LINKED(s->state))
3247 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
3249 latency = s->thread_info.fixed_latency;
3254 /* Called from IO thread */
3255 void pa_sink_set_fixed_latency_within_thread(pa_sink *s, pa_usec_t latency) {
3256 pa_sink_assert_ref(s);
3257 pa_sink_assert_io_context(s);
3259 if (s->flags & PA_SINK_DYNAMIC_LATENCY) {
3260 pa_assert(latency == 0);
3261 s->thread_info.fixed_latency = 0;
3263 if (s->monitor_source)
3264 pa_source_set_fixed_latency_within_thread(s->monitor_source, 0);
3269 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
3270 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
3272 if (s->thread_info.fixed_latency == latency)
3275 s->thread_info.fixed_latency = latency;
3277 if (PA_SINK_IS_LINKED(s->thread_info.state)) {
3281 PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
3282 if (i->update_sink_fixed_latency)
3283 i->update_sink_fixed_latency(i);
3286 pa_sink_invalidate_requested_latency(s, false);
3288 pa_source_set_fixed_latency_within_thread(s->monitor_source, latency);
3291 /* Called from main context */
3292 void pa_sink_set_latency_offset(pa_sink *s, int64_t offset) {
3293 pa_sink_assert_ref(s);
3295 s->latency_offset = offset;
3297 if (PA_SINK_IS_LINKED(s->state))
3298 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_LATENCY_OFFSET, NULL, offset, NULL) == 0);
3300 s->thread_info.latency_offset = offset;
3303 /* Called from main context */
3304 size_t pa_sink_get_max_rewind(pa_sink *s) {
3306 pa_assert_ctl_context();
3307 pa_sink_assert_ref(s);
3309 if (!PA_SINK_IS_LINKED(s->state))
3310 return s->thread_info.max_rewind;
3312 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
3317 /* Called from main context */
3318 size_t pa_sink_get_max_request(pa_sink *s) {
3320 pa_sink_assert_ref(s);
3321 pa_assert_ctl_context();
3323 if (!PA_SINK_IS_LINKED(s->state))
3324 return s->thread_info.max_request;
3326 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MAX_REQUEST, &r, 0, NULL) == 0);
3331 /* Called from main context */
3332 int pa_sink_set_port(pa_sink *s, const char *name, bool save) {
3333 pa_device_port *port;
3336 pa_sink_assert_ref(s);
3337 pa_assert_ctl_context();
3340 pa_log_debug("set_port() operation not implemented for sink %u \"%s\"", s->index, s->name);
3341 return -PA_ERR_NOTIMPLEMENTED;
3345 return -PA_ERR_NOENTITY;
3347 if (!(port = pa_hashmap_get(s->ports, name)))
3348 return -PA_ERR_NOENTITY;
3350 if (s->active_port == port) {
3351 s->save_port = s->save_port || save;
3355 if (s->flags & PA_SINK_DEFERRED_VOLUME) {
3356 struct sink_message_set_port msg = { .port = port, .ret = 0 };
3357 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
3361 ret = s->set_port(s, port);
3364 return -PA_ERR_NOENTITY;
3366 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
3368 pa_log_info("Changed port of sink %u \"%s\" to %s", s->index, s->name, port->name);
3370 s->active_port = port;
3371 s->save_port = save;
3373 pa_sink_set_latency_offset(s, s->active_port->latency_offset);
3375 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PORT_CHANGED], s);
3380 bool pa_device_init_icon(pa_proplist *p, bool is_sink) {
3381 const char *ff, *c, *t = NULL, *s = "", *profile, *bus;
3385 if (pa_proplist_contains(p, PA_PROP_DEVICE_ICON_NAME))
3388 if ((ff = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR))) {
3390 if (pa_streq(ff, "microphone"))
3391 t = "audio-input-microphone";
3392 else if (pa_streq(ff, "webcam"))
3394 else if (pa_streq(ff, "computer"))
3396 else if (pa_streq(ff, "handset"))
3398 else if (pa_streq(ff, "portable"))
3399 t = "multimedia-player";
3400 else if (pa_streq(ff, "tv"))
3401 t = "video-display";
3404 * The following icons are not part of the icon naming spec,
3405 * because Rodney Dawes sucks as the maintainer of that spec.
3407 * http://lists.freedesktop.org/archives/xdg/2009-May/010397.html
3409 else if (pa_streq(ff, "headset"))
3410 t = "audio-headset";
3411 else if (pa_streq(ff, "headphone"))
3412 t = "audio-headphones";
3413 else if (pa_streq(ff, "speaker"))
3414 t = "audio-speakers";
3415 else if (pa_streq(ff, "hands-free"))
3416 t = "audio-handsfree";
3420 if ((c = pa_proplist_gets(p, PA_PROP_DEVICE_CLASS)))
3421 if (pa_streq(c, "modem"))
3428 t = "audio-input-microphone";
3431 if ((profile = pa_proplist_gets(p, PA_PROP_DEVICE_PROFILE_NAME))) {
3432 if (strstr(profile, "analog"))
3434 else if (strstr(profile, "iec958"))
3436 else if (strstr(profile, "hdmi"))
3440 bus = pa_proplist_gets(p, PA_PROP_DEVICE_BUS);
3442 pa_proplist_setf(p, PA_PROP_DEVICE_ICON_NAME, "%s%s%s%s", t, pa_strempty(s), bus ? "-" : "", pa_strempty(bus));
3447 bool pa_device_init_description(pa_proplist *p, pa_card *card) {
3448 const char *s, *d = NULL, *k;
3451 if (pa_proplist_contains(p, PA_PROP_DEVICE_DESCRIPTION))
3455 if ((s = pa_proplist_gets(card->proplist, PA_PROP_DEVICE_DESCRIPTION)))
3459 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR)))
3460 if (pa_streq(s, "internal"))
3461 d = _("Built-in Audio");
3464 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_CLASS)))
3465 if (pa_streq(s, "modem"))
3469 d = pa_proplist_gets(p, PA_PROP_DEVICE_PRODUCT_NAME);
3474 k = pa_proplist_gets(p, PA_PROP_DEVICE_PROFILE_DESCRIPTION);
3477 pa_proplist_setf(p, PA_PROP_DEVICE_DESCRIPTION, "%s %s", d, k);
3479 pa_proplist_sets(p, PA_PROP_DEVICE_DESCRIPTION, d);
3484 bool pa_device_init_intended_roles(pa_proplist *p) {
3488 if (pa_proplist_contains(p, PA_PROP_DEVICE_INTENDED_ROLES))
3491 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR)))
3492 if (pa_streq(s, "handset") || pa_streq(s, "hands-free")
3493 || pa_streq(s, "headset")) {
3494 pa_proplist_sets(p, PA_PROP_DEVICE_INTENDED_ROLES, "phone");
3501 unsigned pa_device_init_priority(pa_proplist *p) {
3503 unsigned priority = 0;
3507 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_CLASS))) {
3509 if (pa_streq(s, "sound"))
3511 else if (!pa_streq(s, "modem"))
3515 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR))) {
3517 if (pa_streq(s, "internal"))
3519 else if (pa_streq(s, "speaker"))
3521 else if (pa_streq(s, "headphone"))
3525 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_BUS))) {
3527 if (pa_streq(s, "pci"))
3529 else if (pa_streq(s, "usb"))
3531 else if (pa_streq(s, "bluetooth"))
3535 if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_PROFILE_NAME))) {
3537 if (pa_startswith(s, "analog-"))
3539 else if (pa_startswith(s, "iec958-"))
3546 PA_STATIC_FLIST_DECLARE(pa_sink_volume_change, 0, pa_xfree);
3548 /* Called from the IO thread. */
3549 static pa_sink_volume_change *pa_sink_volume_change_new(pa_sink *s) {
3550 pa_sink_volume_change *c;
3551 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_sink_volume_change))))
3552 c = pa_xnew(pa_sink_volume_change, 1);
3554 PA_LLIST_INIT(pa_sink_volume_change, c);
3556 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
3560 /* Called from the IO thread. */
3561 static void pa_sink_volume_change_free(pa_sink_volume_change *c) {
3563 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_sink_volume_change), c) < 0)
3567 /* Called from the IO thread. */
3568 void pa_sink_volume_change_push(pa_sink *s) {
3569 pa_sink_volume_change *c = NULL;
3570 pa_sink_volume_change *nc = NULL;
3571 pa_sink_volume_change *pc = NULL;
3572 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
3574 const char *direction = NULL;
3577 nc = pa_sink_volume_change_new(s);
3579 /* NOTE: There is already more different volumes in pa_sink that I can remember.
3580 * Adding one more volume for HW would get us rid of this, but I am trying
3581 * to survive with the ones we already have. */
3582 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
3584 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
3585 pa_log_debug("Volume not changing");
3586 pa_sink_volume_change_free(nc);
3590 nc->at = pa_sink_get_latency_within_thread(s);
3591 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
3593 if (s->thread_info.volume_changes_tail) {
3594 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
3595 /* If volume is going up let's do it a bit late. If it is going
3596 * down let's do it a bit early. */
3597 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
3598 if (nc->at + safety_margin > c->at) {
3599 nc->at += safety_margin;
3604 else if (nc->at - safety_margin > c->at) {
3605 nc->at -= safety_margin;
3613 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
3614 nc->at += safety_margin;
3617 nc->at -= safety_margin;
3620 PA_LLIST_PREPEND(pa_sink_volume_change, s->thread_info.volume_changes, nc);
3623 PA_LLIST_INSERT_AFTER(pa_sink_volume_change, s->thread_info.volume_changes, c, nc);
3626 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
3628 /* We can ignore volume events that came earlier but should happen later than this. */
3629 PA_LLIST_FOREACH_SAFE(c, pc, nc->next) {
3630 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
3631 pa_sink_volume_change_free(c);
3634 s->thread_info.volume_changes_tail = nc;
3637 /* Called from the IO thread. */
3638 static void pa_sink_volume_change_flush(pa_sink *s) {
3639 pa_sink_volume_change *c = s->thread_info.volume_changes;
3641 s->thread_info.volume_changes = NULL;
3642 s->thread_info.volume_changes_tail = NULL;
3644 pa_sink_volume_change *next = c->next;
3645 pa_sink_volume_change_free(c);
3650 /* Called from the IO thread. */
3651 bool pa_sink_volume_change_apply(pa_sink *s, pa_usec_t *usec_to_next) {
3657 if (!s->thread_info.volume_changes || !PA_SINK_IS_LINKED(s->state)) {
3663 pa_assert(s->write_volume);
3665 now = pa_rtclock_now();
3667 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
3668 pa_sink_volume_change *c = s->thread_info.volume_changes;
3669 PA_LLIST_REMOVE(pa_sink_volume_change, s->thread_info.volume_changes, c);
3670 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
3671 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
3673 s->thread_info.current_hw_volume = c->hw_volume;
3674 pa_sink_volume_change_free(c);
3680 if (s->thread_info.volume_changes) {
3682 *usec_to_next = s->thread_info.volume_changes->at - now;
3683 if (pa_log_ratelimit(PA_LOG_DEBUG))
3684 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
3689 s->thread_info.volume_changes_tail = NULL;
3694 /* Called from the IO thread. */
3695 static void pa_sink_volume_change_rewind(pa_sink *s, size_t nbytes) {
3696 /* All the queued volume events later than current latency are shifted to happen earlier. */
3697 pa_sink_volume_change *c;
3698 pa_volume_t prev_vol = pa_cvolume_avg(&s->thread_info.current_hw_volume);
3699 pa_usec_t rewound = pa_bytes_to_usec(nbytes, &s->sample_spec);
3700 pa_usec_t limit = pa_sink_get_latency_within_thread(s);
3702 pa_log_debug("latency = %lld", (long long) limit);
3703 limit += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
3705 PA_LLIST_FOREACH(c, s->thread_info.volume_changes) {
3706 pa_usec_t modified_limit = limit;
3707 if (prev_vol > pa_cvolume_avg(&c->hw_volume))
3708 modified_limit -= s->thread_info.volume_change_safety_margin;
3710 modified_limit += s->thread_info.volume_change_safety_margin;
3711 if (c->at > modified_limit) {
3713 if (c->at < modified_limit)
3714 c->at = modified_limit;
3716 prev_vol = pa_cvolume_avg(&c->hw_volume);
3718 pa_sink_volume_change_apply(s, NULL);
3721 /* Called from the main thread */
3722 /* Gets the list of formats supported by the sink. The members and idxset must
3723 * be freed by the caller. */
3724 pa_idxset* pa_sink_get_formats(pa_sink *s) {
3729 if (s->get_formats) {
3730 /* Sink supports format query, all is good */
3731 ret = s->get_formats(s);
3733 /* Sink doesn't support format query, so assume it does PCM */
3734 pa_format_info *f = pa_format_info_new();
3735 f->encoding = PA_ENCODING_PCM;
3737 ret = pa_idxset_new(NULL, NULL);
3738 pa_idxset_put(ret, f, NULL);
3744 /* Called from the main thread */
3745 /* Allows an external source to set what formats a sink supports if the sink
3746 * permits this. The function makes a copy of the formats on success. */
3747 bool pa_sink_set_formats(pa_sink *s, pa_idxset *formats) {
3752 /* Sink supports setting formats -- let's give it a shot */
3753 return s->set_formats(s, formats);
3755 /* Sink doesn't support setting this -- bail out */
3759 /* Called from the main thread */
3760 /* Checks if the sink can accept this format */
3761 bool pa_sink_check_format(pa_sink *s, pa_format_info *f) {
3762 pa_idxset *formats = NULL;
3768 formats = pa_sink_get_formats(s);
3771 pa_format_info *finfo_device;
3774 PA_IDXSET_FOREACH(finfo_device, formats, i) {
3775 if (pa_format_info_is_compatible(finfo_device, f)) {
3781 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
3787 /* Called from the main thread */
3788 /* Calculates the intersection between formats supported by the sink and
3789 * in_formats, and returns these, in the order of the sink's formats. */
3790 pa_idxset* pa_sink_check_formats(pa_sink *s, pa_idxset *in_formats) {
3791 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *sink_formats = NULL;
3792 pa_format_info *f_sink, *f_in;
3797 if (!in_formats || pa_idxset_isempty(in_formats))
3800 sink_formats = pa_sink_get_formats(s);
3802 PA_IDXSET_FOREACH(f_sink, sink_formats, i) {
3803 PA_IDXSET_FOREACH(f_in, in_formats, j) {
3804 if (pa_format_info_is_compatible(f_sink, f_in))
3805 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
3811 pa_idxset_free(sink_formats, (pa_free_cb_t) pa_format_info_free);
3816 /* Called from the main thread. */
3817 void pa_sink_set_reference_volume_direct(pa_sink *s, const pa_cvolume *volume) {
3818 pa_cvolume old_volume;
3819 char old_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
3820 char new_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
3825 old_volume = s->reference_volume;
3827 if (pa_cvolume_equal(volume, &old_volume))
3830 s->reference_volume = *volume;
3831 pa_log_debug("The reference volume of sink %s changed from %s to %s.", s->name,
3832 pa_cvolume_snprint_verbose(old_volume_str, sizeof(old_volume_str), &old_volume, &s->channel_map,
3833 s->flags & PA_SINK_DECIBEL_VOLUME),
3834 pa_cvolume_snprint_verbose(new_volume_str, sizeof(new_volume_str), volume, &s->channel_map,
3835 s->flags & PA_SINK_DECIBEL_VOLUME));
3837 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
3838 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_VOLUME_CHANGED], s);