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, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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/core-util.h>
39 #include <pulsecore/source-output.h>
40 #include <pulsecore/namereg.h>
41 #include <pulsecore/core-subscribe.h>
42 #include <pulsecore/log.h>
43 #include <pulsecore/mix.h>
44 #include <pulsecore/flist.h>
48 #define ABSOLUTE_MIN_LATENCY (500)
49 #define ABSOLUTE_MAX_LATENCY (10*PA_USEC_PER_SEC)
50 #define DEFAULT_FIXED_LATENCY (250*PA_USEC_PER_MSEC)
52 PA_DEFINE_PUBLIC_CLASS(pa_source, pa_msgobject);
54 struct pa_source_volume_change {
58 PA_LLIST_FIELDS(pa_source_volume_change);
61 struct source_message_set_port {
66 static void source_free(pa_object *o);
68 static void pa_source_volume_change_push(pa_source *s);
69 static void pa_source_volume_change_flush(pa_source *s);
71 pa_source_new_data* pa_source_new_data_init(pa_source_new_data *data) {
75 data->proplist = pa_proplist_new();
76 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);
81 void pa_source_new_data_set_name(pa_source_new_data *data, const char *name) {
85 data->name = pa_xstrdup(name);
88 void pa_source_new_data_set_sample_spec(pa_source_new_data *data, const pa_sample_spec *spec) {
91 if ((data->sample_spec_is_set = !!spec))
92 data->sample_spec = *spec;
95 void pa_source_new_data_set_channel_map(pa_source_new_data *data, const pa_channel_map *map) {
98 if ((data->channel_map_is_set = !!map))
99 data->channel_map = *map;
102 void pa_source_new_data_set_alternate_sample_rate(pa_source_new_data *data, const uint32_t alternate_sample_rate) {
105 data->alternate_sample_rate_is_set = true;
106 data->alternate_sample_rate = alternate_sample_rate;
109 void pa_source_new_data_set_volume(pa_source_new_data *data, const pa_cvolume *volume) {
112 if ((data->volume_is_set = !!volume))
113 data->volume = *volume;
116 void pa_source_new_data_set_muted(pa_source_new_data *data, bool mute) {
119 data->muted_is_set = true;
123 void pa_source_new_data_set_port(pa_source_new_data *data, const char *port) {
126 pa_xfree(data->active_port);
127 data->active_port = pa_xstrdup(port);
130 void pa_source_new_data_done(pa_source_new_data *data) {
133 pa_proplist_free(data->proplist);
136 pa_hashmap_free(data->ports);
138 pa_xfree(data->name);
139 pa_xfree(data->active_port);
142 /* Called from main context */
143 static void reset_callbacks(pa_source *s) {
147 s->get_volume = NULL;
148 s->set_volume = NULL;
149 s->write_volume = NULL;
152 s->update_requested_latency = NULL;
154 s->get_formats = NULL;
155 s->update_rate = NULL;
158 /* Called from main context */
159 pa_source* pa_source_new(
161 pa_source_new_data *data,
162 pa_source_flags_t flags) {
166 char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
171 pa_assert(data->name);
172 pa_assert_ctl_context();
174 s = pa_msgobject_new(pa_source);
176 if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
177 pa_log_debug("Failed to register name %s.", data->name);
182 pa_source_new_data_set_name(data, name);
184 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
186 pa_namereg_unregister(core, name);
190 /* FIXME, need to free s here on failure */
192 pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
193 pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
195 pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
197 if (!data->channel_map_is_set)
198 pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
200 pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
201 pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
203 /* FIXME: There should probably be a general function for checking whether
204 * the source volume is allowed to be set, like there is for source outputs. */
205 pa_assert(!data->volume_is_set || !(flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
207 if (!data->volume_is_set) {
208 pa_cvolume_reset(&data->volume, data->sample_spec.channels);
209 data->save_volume = false;
212 pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
213 pa_return_null_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec));
215 if (!data->muted_is_set)
219 pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
221 pa_device_init_description(data->proplist, data->card);
222 pa_device_init_icon(data->proplist, false);
223 pa_device_init_intended_roles(data->proplist);
225 if (!data->active_port) {
226 pa_device_port *p = pa_device_port_find_best(data->ports);
228 pa_source_new_data_set_port(data, p->name);
231 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
233 pa_namereg_unregister(core, name);
237 s->parent.parent.free = source_free;
238 s->parent.process_msg = pa_source_process_msg;
241 s->state = PA_SOURCE_INIT;
244 s->suspend_cause = data->suspend_cause;
245 pa_source_set_mixer_dirty(s, false);
246 s->name = pa_xstrdup(name);
247 s->proplist = pa_proplist_copy(data->proplist);
248 s->driver = pa_xstrdup(pa_path_get_filename(data->driver));
249 s->module = data->module;
250 s->card = data->card;
252 s->priority = pa_device_init_priority(s->proplist);
254 s->sample_spec = data->sample_spec;
255 s->channel_map = data->channel_map;
256 s->default_sample_rate = s->sample_spec.rate;
258 if (data->alternate_sample_rate_is_set)
259 s->alternate_sample_rate = data->alternate_sample_rate;
261 s->alternate_sample_rate = s->core->alternate_sample_rate;
263 if (s->sample_spec.rate == s->alternate_sample_rate) {
264 pa_log_warn("Default and alternate sample rates are the same.");
265 s->alternate_sample_rate = 0;
268 s->outputs = pa_idxset_new(NULL, NULL);
270 s->monitor_of = NULL;
271 s->output_from_master = NULL;
273 s->reference_volume = s->real_volume = data->volume;
274 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
275 s->base_volume = PA_VOLUME_NORM;
276 s->n_volume_steps = PA_VOLUME_NORM+1;
277 s->muted = data->muted;
278 s->refresh_volume = s->refresh_muted = false;
285 /* As a minor optimization we just steal the list instead of
287 s->ports = data->ports;
290 s->active_port = NULL;
291 s->save_port = false;
293 if (data->active_port)
294 if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
295 s->save_port = data->save_port;
297 /* Hopefully the active port has already been assigned in the previous call
298 to pa_device_port_find_best, but better safe than sorry */
300 s->active_port = pa_device_port_find_best(s->ports);
303 s->latency_offset = s->active_port->latency_offset;
305 s->latency_offset = 0;
307 s->save_volume = data->save_volume;
308 s->save_muted = data->save_muted;
310 pa_silence_memchunk_get(
311 &core->silence_cache,
317 s->thread_info.rtpoll = NULL;
318 s->thread_info.outputs = pa_hashmap_new_full(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func, NULL,
319 (pa_free_cb_t) pa_source_output_unref);
320 s->thread_info.soft_volume = s->soft_volume;
321 s->thread_info.soft_muted = s->muted;
322 s->thread_info.state = s->state;
323 s->thread_info.max_rewind = 0;
324 s->thread_info.requested_latency_valid = false;
325 s->thread_info.requested_latency = 0;
326 s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
327 s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
328 s->thread_info.fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
330 PA_LLIST_HEAD_INIT(pa_source_volume_change, s->thread_info.volume_changes);
331 s->thread_info.volume_changes_tail = NULL;
332 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
333 s->thread_info.volume_change_safety_margin = core->deferred_volume_safety_margin_usec;
334 s->thread_info.volume_change_extra_delay = core->deferred_volume_extra_delay_usec;
335 s->thread_info.latency_offset = s->latency_offset;
337 /* FIXME: This should probably be moved to pa_source_put() */
338 pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
341 pa_assert_se(pa_idxset_put(s->card->sources, s, NULL) >= 0);
343 pt = pa_proplist_to_string_sep(s->proplist, "\n ");
344 pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s\n %s",
347 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
348 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
355 /* Called from main context */
356 static int source_set_state(pa_source *s, pa_source_state_t state) {
359 pa_source_state_t original_state;
362 pa_assert_ctl_context();
364 if (s->state == state)
367 original_state = s->state;
370 (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
371 (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
374 if ((ret = s->set_state(s, state)) < 0)
378 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
381 s->set_state(s, original_state);
388 if (state != PA_SOURCE_UNLINKED) { /* if we enter UNLINKED state pa_source_unlink() will fire the appropriate events */
389 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
390 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
393 if (suspend_change) {
397 /* We're suspending or resuming, tell everyone about it */
399 PA_IDXSET_FOREACH(o, s->outputs, idx)
400 if (s->state == PA_SOURCE_SUSPENDED &&
401 (o->flags & PA_SOURCE_OUTPUT_KILL_ON_SUSPEND))
402 pa_source_output_kill(o);
404 o->suspend(o, state == PA_SOURCE_SUSPENDED);
410 void pa_source_set_get_volume_callback(pa_source *s, pa_source_cb_t cb) {
416 void pa_source_set_set_volume_callback(pa_source *s, pa_source_cb_t cb) {
417 pa_source_flags_t flags;
420 pa_assert(!s->write_volume || cb);
424 /* Save the current flags so we can tell if they've changed */
428 /* The source implementor is responsible for setting decibel volume support */
429 s->flags |= PA_SOURCE_HW_VOLUME_CTRL;
431 s->flags &= ~PA_SOURCE_HW_VOLUME_CTRL;
432 /* See note below in pa_source_put() about volume sharing and decibel volumes */
433 pa_source_enable_decibel_volume(s, !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
436 /* If the flags have changed after init, let any clients know via a change event */
437 if (s->state != PA_SOURCE_INIT && flags != s->flags)
438 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
441 void pa_source_set_write_volume_callback(pa_source *s, pa_source_cb_t cb) {
442 pa_source_flags_t flags;
445 pa_assert(!cb || s->set_volume);
447 s->write_volume = cb;
449 /* Save the current flags so we can tell if they've changed */
453 s->flags |= PA_SOURCE_DEFERRED_VOLUME;
455 s->flags &= ~PA_SOURCE_DEFERRED_VOLUME;
457 /* If the flags have changed after init, let any clients know via a change event */
458 if (s->state != PA_SOURCE_INIT && flags != s->flags)
459 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
462 void pa_source_set_get_mute_callback(pa_source *s, pa_source_get_mute_cb_t cb) {
468 void pa_source_set_set_mute_callback(pa_source *s, pa_source_cb_t cb) {
469 pa_source_flags_t flags;
475 /* Save the current flags so we can tell if they've changed */
479 s->flags |= PA_SOURCE_HW_MUTE_CTRL;
481 s->flags &= ~PA_SOURCE_HW_MUTE_CTRL;
483 /* If the flags have changed after init, let any clients know via a change event */
484 if (s->state != PA_SOURCE_INIT && flags != s->flags)
485 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
488 static void enable_flat_volume(pa_source *s, bool enable) {
489 pa_source_flags_t flags;
493 /* Always follow the overall user preference here */
494 enable = enable && s->core->flat_volumes;
496 /* Save the current flags so we can tell if they've changed */
500 s->flags |= PA_SOURCE_FLAT_VOLUME;
502 s->flags &= ~PA_SOURCE_FLAT_VOLUME;
504 /* If the flags have changed after init, let any clients know via a change event */
505 if (s->state != PA_SOURCE_INIT && flags != s->flags)
506 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
509 void pa_source_enable_decibel_volume(pa_source *s, bool enable) {
510 pa_source_flags_t flags;
514 /* Save the current flags so we can tell if they've changed */
518 s->flags |= PA_SOURCE_DECIBEL_VOLUME;
519 enable_flat_volume(s, true);
521 s->flags &= ~PA_SOURCE_DECIBEL_VOLUME;
522 enable_flat_volume(s, false);
525 /* If the flags have changed after init, let any clients know via a change event */
526 if (s->state != PA_SOURCE_INIT && flags != s->flags)
527 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
530 /* Called from main context */
531 void pa_source_put(pa_source *s) {
532 pa_source_assert_ref(s);
533 pa_assert_ctl_context();
535 pa_assert(s->state == PA_SOURCE_INIT);
536 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || s->output_from_master);
538 /* The following fields must be initialized properly when calling _put() */
539 pa_assert(s->asyncmsgq);
540 pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
542 /* Generally, flags should be initialized via pa_source_new(). As a
543 * special exception we allow some volume related flags to be set
544 * between _new() and _put() by the callback setter functions above.
546 * Thus we implement a couple safeguards here which ensure the above
547 * setters were used (or at least the implementor made manual changes
548 * in a compatible way).
550 * Note: All of these flags set here can change over the life time
552 pa_assert(!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) || s->set_volume);
553 pa_assert(!(s->flags & PA_SOURCE_DEFERRED_VOLUME) || s->write_volume);
554 pa_assert(!(s->flags & PA_SOURCE_HW_MUTE_CTRL) || s->set_mute);
556 /* XXX: Currently decibel volume is disabled for all sources that use volume
557 * sharing. When the master source supports decibel volume, it would be good
558 * to have the flag also in the filter source, but currently we don't do that
559 * so that the flags of the filter source never change when it's moved from
560 * a master source to another. One solution for this problem would be to
561 * remove user-visible volume altogether from filter sources when volume
562 * sharing is used, but the current approach was easier to implement... */
563 /* We always support decibel volumes in software, otherwise we leave it to
564 * the source implementor to set this flag as needed.
566 * Note: This flag can also change over the life time of the source. */
567 if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
568 pa_source_enable_decibel_volume(s, true);
569 s->soft_volume = s->reference_volume;
572 /* If the source implementor support DB volumes by itself, we should always
573 * try and enable flat volumes too */
574 if ((s->flags & PA_SOURCE_DECIBEL_VOLUME))
575 enable_flat_volume(s, true);
577 if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
578 pa_source *root_source = pa_source_get_master(s);
580 pa_assert(PA_LIKELY(root_source));
582 s->reference_volume = root_source->reference_volume;
583 pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
585 s->real_volume = root_source->real_volume;
586 pa_cvolume_remap(&s->real_volume, &root_source->channel_map, &s->channel_map);
588 /* We assume that if the sink implementor changed the default
589 * volume he did so in real_volume, because that is the usual
590 * place where he is supposed to place his changes. */
591 s->reference_volume = s->real_volume;
593 s->thread_info.soft_volume = s->soft_volume;
594 s->thread_info.soft_muted = s->muted;
595 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
597 pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL)
598 || (s->base_volume == PA_VOLUME_NORM
599 && ((s->flags & PA_SOURCE_DECIBEL_VOLUME || (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)))));
600 pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
601 pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == (s->thread_info.fixed_latency != 0));
603 if (s->suspend_cause)
604 pa_assert_se(source_set_state(s, PA_SOURCE_SUSPENDED) == 0);
606 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
608 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
609 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
612 /* Called from main context */
613 void pa_source_unlink(pa_source *s) {
615 pa_source_output *o, PA_UNUSED *j = NULL;
618 pa_assert_ctl_context();
620 /* See pa_sink_unlink() for a couple of comments how this function
623 linked = PA_SOURCE_IS_LINKED(s->state);
626 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
628 if (s->state != PA_SOURCE_UNLINKED)
629 pa_namereg_unregister(s->core, s->name);
630 pa_idxset_remove_by_data(s->core->sources, s, NULL);
633 pa_idxset_remove_by_data(s->card->sources, s, NULL);
635 while ((o = pa_idxset_first(s->outputs, NULL))) {
637 pa_source_output_kill(o);
642 source_set_state(s, PA_SOURCE_UNLINKED);
644 s->state = PA_SOURCE_UNLINKED;
649 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
650 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
654 /* Called from main context */
655 static void source_free(pa_object *o) {
656 pa_source *s = PA_SOURCE(o);
659 pa_assert_ctl_context();
660 pa_assert(pa_source_refcnt(s) == 0);
662 if (PA_SOURCE_IS_LINKED(s->state))
665 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
667 pa_idxset_free(s->outputs, NULL);
668 pa_hashmap_free(s->thread_info.outputs);
670 if (s->silence.memblock)
671 pa_memblock_unref(s->silence.memblock);
677 pa_proplist_free(s->proplist);
680 pa_hashmap_free(s->ports);
685 /* Called from main context, and not while the IO thread is active, please */
686 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
687 pa_source_assert_ref(s);
688 pa_assert_ctl_context();
693 /* Called from main context, and not while the IO thread is active, please */
694 void pa_source_update_flags(pa_source *s, pa_source_flags_t mask, pa_source_flags_t value) {
695 pa_source_flags_t old_flags;
696 pa_source_output *output;
699 pa_source_assert_ref(s);
700 pa_assert_ctl_context();
702 /* For now, allow only a minimal set of flags to be changed. */
703 pa_assert((mask & ~(PA_SOURCE_DYNAMIC_LATENCY|PA_SOURCE_LATENCY)) == 0);
705 old_flags = s->flags;
706 s->flags = (s->flags & ~mask) | (value & mask);
708 if (s->flags == old_flags)
711 if ((s->flags & PA_SOURCE_LATENCY) != (old_flags & PA_SOURCE_LATENCY))
712 pa_log_debug("Source %s: LATENCY flag %s.", s->name, (s->flags & PA_SOURCE_LATENCY) ? "enabled" : "disabled");
714 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY) != (old_flags & PA_SOURCE_DYNAMIC_LATENCY))
715 pa_log_debug("Source %s: DYNAMIC_LATENCY flag %s.",
716 s->name, (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ? "enabled" : "disabled");
718 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
719 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_FLAGS_CHANGED], s);
721 PA_IDXSET_FOREACH(output, s->outputs, idx) {
722 if (output->destination_source)
723 pa_source_update_flags(output->destination_source, mask, value);
727 /* Called from IO context, or before _put() from main context */
728 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
729 pa_source_assert_ref(s);
730 pa_source_assert_io_context(s);
732 s->thread_info.rtpoll = p;
735 /* Called from main context */
736 int pa_source_update_status(pa_source*s) {
737 pa_source_assert_ref(s);
738 pa_assert_ctl_context();
739 pa_assert(PA_SOURCE_IS_LINKED(s->state));
741 if (s->state == PA_SOURCE_SUSPENDED)
744 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
747 /* Called from any context - must be threadsafe */
748 void pa_source_set_mixer_dirty(pa_source *s, bool is_dirty) {
749 pa_atomic_store(&s->mixer_dirty, is_dirty ? 1 : 0);
752 /* Called from main context */
753 int pa_source_suspend(pa_source *s, bool suspend, pa_suspend_cause_t cause) {
754 pa_source_assert_ref(s);
755 pa_assert_ctl_context();
756 pa_assert(PA_SOURCE_IS_LINKED(s->state));
757 pa_assert(cause != 0);
759 if (s->monitor_of && cause != PA_SUSPEND_PASSTHROUGH)
760 return -PA_ERR_NOTSUPPORTED;
763 s->suspend_cause |= cause;
765 s->suspend_cause &= ~cause;
767 if (!(s->suspend_cause & PA_SUSPEND_SESSION) && (pa_atomic_load(&s->mixer_dirty) != 0)) {
768 /* This might look racy but isn't: If somebody sets mixer_dirty exactly here,
769 it'll be handled just fine. */
770 pa_source_set_mixer_dirty(s, false);
771 pa_log_debug("Mixer is now accessible. Updating alsa mixer settings.");
772 if (s->active_port && s->set_port) {
773 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
774 struct source_message_set_port msg = { .port = s->active_port, .ret = 0 };
775 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
778 s->set_port(s, s->active_port);
788 if ((pa_source_get_state(s) == PA_SOURCE_SUSPENDED) == !!s->suspend_cause)
791 pa_log_debug("Suspend cause of source %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
793 if (s->suspend_cause)
794 return source_set_state(s, PA_SOURCE_SUSPENDED);
796 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
799 /* Called from main context */
800 int pa_source_sync_suspend(pa_source *s) {
801 pa_sink_state_t state;
803 pa_source_assert_ref(s);
804 pa_assert_ctl_context();
805 pa_assert(PA_SOURCE_IS_LINKED(s->state));
806 pa_assert(s->monitor_of);
808 state = pa_sink_get_state(s->monitor_of);
810 if (state == PA_SINK_SUSPENDED)
811 return source_set_state(s, PA_SOURCE_SUSPENDED);
813 pa_assert(PA_SINK_IS_OPENED(state));
815 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
818 /* Called from main context */
819 pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q) {
820 pa_source_output *o, *n;
823 pa_source_assert_ref(s);
824 pa_assert_ctl_context();
825 pa_assert(PA_SOURCE_IS_LINKED(s->state));
830 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = n) {
831 n = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx));
833 pa_source_output_ref(o);
835 if (pa_source_output_start_move(o) >= 0)
838 pa_source_output_unref(o);
844 /* Called from main context */
845 void pa_source_move_all_finish(pa_source *s, pa_queue *q, bool save) {
848 pa_source_assert_ref(s);
849 pa_assert_ctl_context();
850 pa_assert(PA_SOURCE_IS_LINKED(s->state));
853 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
854 if (pa_source_output_finish_move(o, s, save) < 0)
855 pa_source_output_fail_move(o);
857 pa_source_output_unref(o);
860 pa_queue_free(q, NULL);
863 /* Called from main context */
864 void pa_source_move_all_fail(pa_queue *q) {
867 pa_assert_ctl_context();
870 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
871 pa_source_output_fail_move(o);
872 pa_source_output_unref(o);
875 pa_queue_free(q, NULL);
878 /* Called from IO thread context */
879 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
883 pa_source_assert_ref(s);
884 pa_source_assert_io_context(s);
885 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
890 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
893 pa_log_debug("Processing rewind...");
895 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
896 pa_source_output_assert_ref(o);
897 pa_source_output_process_rewind(o, nbytes);
901 /* Called from IO thread context */
902 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
906 pa_source_assert_ref(s);
907 pa_source_assert_io_context(s);
908 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
911 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
914 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
915 pa_memchunk vchunk = *chunk;
917 pa_memblock_ref(vchunk.memblock);
918 pa_memchunk_make_writable(&vchunk, 0);
920 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
921 pa_silence_memchunk(&vchunk, &s->sample_spec);
923 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
925 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
926 pa_source_output_assert_ref(o);
928 if (!o->thread_info.direct_on_input)
929 pa_source_output_push(o, &vchunk);
932 pa_memblock_unref(vchunk.memblock);
935 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
936 pa_source_output_assert_ref(o);
938 if (!o->thread_info.direct_on_input)
939 pa_source_output_push(o, chunk);
944 /* Called from IO thread context */
945 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
946 pa_source_assert_ref(s);
947 pa_source_assert_io_context(s);
948 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
949 pa_source_output_assert_ref(o);
950 pa_assert(o->thread_info.direct_on_input);
953 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
956 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
957 pa_memchunk vchunk = *chunk;
959 pa_memblock_ref(vchunk.memblock);
960 pa_memchunk_make_writable(&vchunk, 0);
962 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
963 pa_silence_memchunk(&vchunk, &s->sample_spec);
965 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
967 pa_source_output_push(o, &vchunk);
969 pa_memblock_unref(vchunk.memblock);
971 pa_source_output_push(o, chunk);
974 /* Called from main thread */
975 int pa_source_update_rate(pa_source *s, uint32_t rate, bool passthrough) {
977 uint32_t desired_rate = rate;
978 uint32_t default_rate = s->default_sample_rate;
979 uint32_t alternate_rate = s->alternate_sample_rate;
980 bool default_rate_is_usable = false;
981 bool alternate_rate_is_usable = false;
983 if (rate == s->sample_spec.rate)
986 if (!s->update_rate && !s->monitor_of)
989 if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough)) {
990 pa_log_debug("Default and alternate sample rates are the same, so there is no point in switching.");
994 if (PA_SOURCE_IS_RUNNING(s->state)) {
995 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u Hz",
996 s->sample_spec.rate);
1000 if (s->monitor_of) {
1001 if (PA_SINK_IS_RUNNING(s->monitor_of->state)) {
1002 pa_log_info("Cannot update rate, this is a monitor source and the sink is running.");
1007 if (PA_UNLIKELY(!pa_sample_rate_valid(desired_rate)))
1010 if (!passthrough && default_rate != desired_rate && alternate_rate != desired_rate) {
1011 if (default_rate % 11025 == 0 && desired_rate % 11025 == 0)
1012 default_rate_is_usable = true;
1013 if (default_rate % 4000 == 0 && desired_rate % 4000 == 0)
1014 default_rate_is_usable = true;
1015 if (alternate_rate && alternate_rate % 11025 == 0 && desired_rate % 11025 == 0)
1016 alternate_rate_is_usable = true;
1017 if (alternate_rate && alternate_rate % 4000 == 0 && desired_rate % 4000 == 0)
1018 alternate_rate_is_usable = true;
1020 if (alternate_rate_is_usable && !default_rate_is_usable)
1021 desired_rate = alternate_rate;
1023 desired_rate = default_rate;
1026 if (desired_rate == s->sample_spec.rate)
1029 if (!passthrough && pa_source_used_by(s) > 0)
1032 pa_log_debug("Suspending source %s due to changing the sample rate.", s->name);
1033 pa_source_suspend(s, true, PA_SUSPEND_INTERNAL);
1036 ret = s->update_rate(s, desired_rate);
1038 /* This is a monitor source. */
1040 /* XXX: This code is written with non-passthrough streams in mind. I
1041 * have no idea whether the behaviour with passthrough streams is
1044 uint32_t old_rate = s->sample_spec.rate;
1046 s->sample_spec.rate = desired_rate;
1047 ret = pa_sink_update_rate(s->monitor_of, desired_rate, false);
1050 /* Changing the sink rate failed, roll back the old rate for
1051 * the monitor source. Why did we set the source rate before
1052 * calling pa_sink_update_rate(), you may ask. The reason is
1053 * that pa_sink_update_rate() tries to update the monitor
1054 * source rate, but we are already in the process of updating
1055 * the monitor source rate, so there's a risk of entering an
1056 * infinite loop. Setting the source rate before calling
1057 * pa_sink_update_rate() makes the rate == s->sample_spec.rate
1058 * check in the beginning of this function return early, so we
1060 s->sample_spec.rate = old_rate;
1068 pa_source_output *o;
1070 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1071 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1072 pa_source_output_update_rate(o);
1075 pa_log_info("Changed sampling rate successfully");
1078 pa_source_suspend(s, false, PA_SUSPEND_INTERNAL);
1083 /* Called from main thread */
1084 pa_usec_t pa_source_get_latency(pa_source *s) {
1087 pa_source_assert_ref(s);
1088 pa_assert_ctl_context();
1089 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1091 if (s->state == PA_SOURCE_SUSPENDED)
1094 if (!(s->flags & PA_SOURCE_LATENCY))
1097 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1099 /* usec is unsigned, so check that the offset can be added to usec without
1101 if (-s->latency_offset <= (int64_t) usec)
1102 usec += s->latency_offset;
1109 /* Called from IO thread */
1110 pa_usec_t pa_source_get_latency_within_thread(pa_source *s) {
1114 pa_source_assert_ref(s);
1115 pa_source_assert_io_context(s);
1116 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1118 /* The returned value is supposed to be in the time domain of the sound card! */
1120 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1123 if (!(s->flags & PA_SOURCE_LATENCY))
1126 o = PA_MSGOBJECT(s);
1128 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1130 if (o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1133 /* usec is unsigned, so check that the offset can be added to usec without
1135 if (-s->thread_info.latency_offset <= (int64_t) usec)
1136 usec += s->thread_info.latency_offset;
1143 /* Called from the main thread (and also from the IO thread while the main
1144 * thread is waiting).
1146 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1147 * set. Instead, flat volume mode is detected by checking whether the root source
1148 * has the flag set. */
1149 bool pa_source_flat_volume_enabled(pa_source *s) {
1150 pa_source_assert_ref(s);
1152 s = pa_source_get_master(s);
1155 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1160 /* Called from the main thread (and also from the IO thread while the main
1161 * thread is waiting). */
1162 pa_source *pa_source_get_master(pa_source *s) {
1163 pa_source_assert_ref(s);
1165 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1166 if (PA_UNLIKELY(!s->output_from_master))
1169 s = s->output_from_master->source;
1175 /* Called from main context */
1176 bool pa_source_is_passthrough(pa_source *s) {
1178 pa_source_assert_ref(s);
1180 /* NB Currently only monitor sources support passthrough mode */
1181 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1184 /* Called from main context */
1185 void pa_source_enter_passthrough(pa_source *s) {
1188 /* set the volume to NORM */
1189 s->saved_volume = *pa_source_get_volume(s, true);
1190 s->saved_save_volume = s->save_volume;
1192 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1193 pa_source_set_volume(s, &volume, true, false);
1196 /* Called from main context */
1197 void pa_source_leave_passthrough(pa_source *s) {
1198 /* Restore source volume to what it was before we entered passthrough mode */
1199 pa_source_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
1201 pa_cvolume_init(&s->saved_volume);
1202 s->saved_save_volume = false;
1205 /* Called from main context. */
1206 static void compute_reference_ratio(pa_source_output *o) {
1208 pa_cvolume remapped;
1212 pa_assert(pa_source_flat_volume_enabled(o->source));
1215 * Calculates the reference ratio from the source's reference
1216 * volume. This basically calculates:
1218 * o->reference_ratio = o->volume / o->source->reference_volume
1221 remapped = o->source->reference_volume;
1222 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1224 ratio = o->reference_ratio;
1226 for (c = 0; c < o->sample_spec.channels; c++) {
1228 /* We don't update when the source volume is 0 anyway */
1229 if (remapped.values[c] <= PA_VOLUME_MUTED)
1232 /* Don't update the reference ratio unless necessary */
1233 if (pa_sw_volume_multiply(
1235 remapped.values[c]) == o->volume.values[c])
1238 ratio.values[c] = pa_sw_volume_divide(
1239 o->volume.values[c],
1240 remapped.values[c]);
1243 pa_source_output_set_reference_ratio(o, &ratio);
1246 /* Called from main context. Only called for the root source in volume sharing
1247 * cases, except for internal recursive calls. */
1248 static void compute_reference_ratios(pa_source *s) {
1250 pa_source_output *o;
1252 pa_source_assert_ref(s);
1253 pa_assert_ctl_context();
1254 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1255 pa_assert(pa_source_flat_volume_enabled(s));
1257 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1258 compute_reference_ratio(o);
1260 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1261 compute_reference_ratios(o->destination_source);
1265 /* Called from main context. Only called for the root source in volume sharing
1266 * cases, except for internal recursive calls. */
1267 static void compute_real_ratios(pa_source *s) {
1268 pa_source_output *o;
1271 pa_source_assert_ref(s);
1272 pa_assert_ctl_context();
1273 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1274 pa_assert(pa_source_flat_volume_enabled(s));
1276 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1278 pa_cvolume remapped;
1280 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1281 /* The origin source uses volume sharing, so this input's real ratio
1282 * is handled as a special case - the real ratio must be 0 dB, and
1283 * as a result i->soft_volume must equal i->volume_factor. */
1284 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1285 o->soft_volume = o->volume_factor;
1287 compute_real_ratios(o->destination_source);
1293 * This basically calculates:
1295 * i->real_ratio := i->volume / s->real_volume
1296 * i->soft_volume := i->real_ratio * i->volume_factor
1299 remapped = s->real_volume;
1300 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1302 o->real_ratio.channels = o->sample_spec.channels;
1303 o->soft_volume.channels = o->sample_spec.channels;
1305 for (c = 0; c < o->sample_spec.channels; c++) {
1307 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1308 /* We leave o->real_ratio untouched */
1309 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1313 /* Don't lose accuracy unless necessary */
1314 if (pa_sw_volume_multiply(
1315 o->real_ratio.values[c],
1316 remapped.values[c]) != o->volume.values[c])
1318 o->real_ratio.values[c] = pa_sw_volume_divide(
1319 o->volume.values[c],
1320 remapped.values[c]);
1322 o->soft_volume.values[c] = pa_sw_volume_multiply(
1323 o->real_ratio.values[c],
1324 o->volume_factor.values[c]);
1327 /* We don't copy the soft_volume to the thread_info data
1328 * here. That must be done by the caller */
1332 static pa_cvolume *cvolume_remap_minimal_impact(
1334 const pa_cvolume *template,
1335 const pa_channel_map *from,
1336 const pa_channel_map *to) {
1341 pa_assert(template);
1344 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1345 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1347 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1348 * mapping from source output to source volumes:
1350 * If template is a possible remapping from v it is used instead
1351 * of remapping anew.
1353 * If the channel maps don't match we set an all-channel volume on
1354 * the source to ensure that changing a volume on one stream has no
1355 * effect that cannot be compensated for in another stream that
1356 * does not have the same channel map as the source. */
1358 if (pa_channel_map_equal(from, to))
1362 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1367 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1371 /* Called from main thread. Only called for the root source in volume sharing
1372 * cases, except for internal recursive calls. */
1373 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1374 pa_source_output *o;
1377 pa_source_assert_ref(s);
1378 pa_assert(max_volume);
1379 pa_assert(channel_map);
1380 pa_assert(pa_source_flat_volume_enabled(s));
1382 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1383 pa_cvolume remapped;
1385 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1386 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1388 /* Ignore this output. The origin source uses volume sharing, so this
1389 * output's volume will be set to be equal to the root source's real
1390 * volume. Obviously this output's current volume must not then
1391 * affect what the root source's real volume will be. */
1395 remapped = o->volume;
1396 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1397 pa_cvolume_merge(max_volume, max_volume, &remapped);
1401 /* Called from main thread. Only called for the root source in volume sharing
1402 * cases, except for internal recursive calls. */
1403 static bool has_outputs(pa_source *s) {
1404 pa_source_output *o;
1407 pa_source_assert_ref(s);
1409 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1410 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1417 /* Called from main thread. Only called for the root source in volume sharing
1418 * cases, except for internal recursive calls. */
1419 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1420 pa_source_output *o;
1423 pa_source_assert_ref(s);
1424 pa_assert(new_volume);
1425 pa_assert(channel_map);
1427 s->real_volume = *new_volume;
1428 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1430 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1431 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1432 if (pa_source_flat_volume_enabled(s)) {
1433 pa_cvolume new_output_volume;
1435 /* Follow the root source's real volume. */
1436 new_output_volume = *new_volume;
1437 pa_cvolume_remap(&new_output_volume, channel_map, &o->channel_map);
1438 pa_source_output_set_volume_direct(o, &new_output_volume);
1439 compute_reference_ratio(o);
1442 update_real_volume(o->destination_source, new_volume, channel_map);
1447 /* Called from main thread. Only called for the root source in shared volume
1449 static void compute_real_volume(pa_source *s) {
1450 pa_source_assert_ref(s);
1451 pa_assert_ctl_context();
1452 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1453 pa_assert(pa_source_flat_volume_enabled(s));
1454 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1456 /* This determines the maximum volume of all streams and sets
1457 * s->real_volume accordingly. */
1459 if (!has_outputs(s)) {
1460 /* In the special case that we have no source outputs we leave the
1461 * volume unmodified. */
1462 update_real_volume(s, &s->reference_volume, &s->channel_map);
1466 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1468 /* First let's determine the new maximum volume of all outputs
1469 * connected to this source */
1470 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1471 update_real_volume(s, &s->real_volume, &s->channel_map);
1473 /* Then, let's update the real ratios/soft volumes of all outputs
1474 * connected to this source */
1475 compute_real_ratios(s);
1478 /* Called from main thread. Only called for the root source in shared volume
1479 * cases, except for internal recursive calls. */
1480 static void propagate_reference_volume(pa_source *s) {
1481 pa_source_output *o;
1484 pa_source_assert_ref(s);
1485 pa_assert_ctl_context();
1486 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1487 pa_assert(pa_source_flat_volume_enabled(s));
1489 /* This is called whenever the source volume changes that is not
1490 * caused by a source output volume change. We need to fix up the
1491 * source output volumes accordingly */
1493 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1494 pa_cvolume new_volume;
1496 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1497 propagate_reference_volume(o->destination_source);
1499 /* Since the origin source uses volume sharing, this output's volume
1500 * needs to be updated to match the root source's real volume, but
1501 * that will be done later in update_shared_real_volume(). */
1505 /* This basically calculates:
1507 * o->volume := o->reference_volume * o->reference_ratio */
1509 new_volume = s->reference_volume;
1510 pa_cvolume_remap(&new_volume, &s->channel_map, &o->channel_map);
1511 pa_sw_cvolume_multiply(&new_volume, &new_volume, &o->reference_ratio);
1512 pa_source_output_set_volume_direct(o, &new_volume);
1516 /* Called from main thread. Only called for the root source in volume sharing
1517 * cases, except for internal recursive calls. The return value indicates
1518 * whether any reference volume actually changed. */
1519 static bool update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
1521 bool reference_volume_changed;
1522 pa_source_output *o;
1525 pa_source_assert_ref(s);
1526 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1528 pa_assert(channel_map);
1529 pa_assert(pa_cvolume_valid(v));
1532 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1534 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1535 pa_source_set_reference_volume_direct(s, &volume);
1537 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1539 if (!reference_volume_changed && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1540 /* If the root source's volume doesn't change, then there can't be any
1541 * changes in the other source in the source tree either.
1543 * It's probably theoretically possible that even if the root source's
1544 * volume changes slightly, some filter source doesn't change its volume
1545 * due to rounding errors. If that happens, we still want to propagate
1546 * the changed root source volume to the sources connected to the
1547 * intermediate source that didn't change its volume. This theoretical
1548 * possibility is the reason why we have that !(s->flags &
1549 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1550 * notice even if we returned here false always if
1551 * reference_volume_changed is false. */
1554 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1555 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1556 update_reference_volume(o->destination_source, v, channel_map, false);
1562 /* Called from main thread */
1563 void pa_source_set_volume(
1565 const pa_cvolume *volume,
1569 pa_cvolume new_reference_volume;
1570 pa_source *root_source;
1572 pa_source_assert_ref(s);
1573 pa_assert_ctl_context();
1574 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1575 pa_assert(!volume || pa_cvolume_valid(volume));
1576 pa_assert(volume || pa_source_flat_volume_enabled(s));
1577 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1579 /* make sure we don't change the volume in PASSTHROUGH mode ...
1580 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1581 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1582 pa_log_warn("Cannot change volume, source is monitor of a PASSTHROUGH sink");
1586 /* In case of volume sharing, the volume is set for the root source first,
1587 * from which it's then propagated to the sharing sources. */
1588 root_source = pa_source_get_master(s);
1590 if (PA_UNLIKELY(!root_source))
1593 /* As a special exception we accept mono volumes on all sources --
1594 * even on those with more complex channel maps */
1597 if (pa_cvolume_compatible(volume, &s->sample_spec))
1598 new_reference_volume = *volume;
1600 new_reference_volume = s->reference_volume;
1601 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1604 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1606 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1607 if (pa_source_flat_volume_enabled(root_source)) {
1608 /* OK, propagate this volume change back to the outputs */
1609 propagate_reference_volume(root_source);
1611 /* And now recalculate the real volume */
1612 compute_real_volume(root_source);
1614 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1618 /* If volume is NULL we synchronize the source's real and
1619 * reference volumes with the stream volumes. */
1621 pa_assert(pa_source_flat_volume_enabled(root_source));
1623 /* Ok, let's determine the new real volume */
1624 compute_real_volume(root_source);
1626 /* Let's 'push' the reference volume if necessary */
1627 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_source->real_volume);
1628 /* If the source and its root don't have the same number of channels, we need to remap */
1629 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1630 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1631 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1633 /* Now that the reference volume is updated, we can update the streams'
1634 * reference ratios. */
1635 compute_reference_ratios(root_source);
1638 if (root_source->set_volume) {
1639 /* If we have a function set_volume(), then we do not apply a
1640 * soft volume by default. However, set_volume() is free to
1641 * apply one to root_source->soft_volume */
1643 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1644 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1645 root_source->set_volume(root_source);
1648 /* If we have no function set_volume(), then the soft volume
1649 * becomes the real volume */
1650 root_source->soft_volume = root_source->real_volume;
1652 /* This tells the source that soft volume and/or real volume changed */
1654 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1657 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1658 * Only to be called by source implementor */
1659 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1661 pa_source_assert_ref(s);
1662 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1664 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1665 pa_source_assert_io_context(s);
1667 pa_assert_ctl_context();
1670 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1672 s->soft_volume = *volume;
1674 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1675 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1677 s->thread_info.soft_volume = s->soft_volume;
1680 /* Called from the main thread. Only called for the root source in volume sharing
1681 * cases, except for internal recursive calls. */
1682 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1683 pa_source_output *o;
1686 pa_source_assert_ref(s);
1687 pa_assert(old_real_volume);
1688 pa_assert_ctl_context();
1689 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1691 /* This is called when the hardware's real volume changes due to
1692 * some external event. We copy the real volume into our
1693 * reference volume and then rebuild the stream volumes based on
1694 * i->real_ratio which should stay fixed. */
1696 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1697 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1700 /* 1. Make the real volume the reference volume */
1701 update_reference_volume(s, &s->real_volume, &s->channel_map, true);
1704 if (pa_source_flat_volume_enabled(s)) {
1705 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1706 pa_cvolume new_volume;
1708 /* 2. Since the source's reference and real volumes are equal
1709 * now our ratios should be too. */
1710 pa_source_output_set_reference_ratio(o, &o->real_ratio);
1712 /* 3. Recalculate the new stream reference volume based on the
1713 * reference ratio and the sink's reference volume.
1715 * This basically calculates:
1717 * o->volume = s->reference_volume * o->reference_ratio
1719 * This is identical to propagate_reference_volume() */
1720 new_volume = s->reference_volume;
1721 pa_cvolume_remap(&new_volume, &s->channel_map, &o->channel_map);
1722 pa_sw_cvolume_multiply(&new_volume, &new_volume, &o->reference_ratio);
1723 pa_source_output_set_volume_direct(o, &new_volume);
1725 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1726 propagate_real_volume(o->destination_source, old_real_volume);
1730 /* Something got changed in the hardware. It probably makes sense
1731 * to save changed hw settings given that hw volume changes not
1732 * triggered by PA are almost certainly done by the user. */
1733 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1734 s->save_volume = true;
1737 /* Called from io thread */
1738 void pa_source_update_volume_and_mute(pa_source *s) {
1740 pa_source_assert_io_context(s);
1742 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1745 /* Called from main thread */
1746 const pa_cvolume *pa_source_get_volume(pa_source *s, bool force_refresh) {
1747 pa_source_assert_ref(s);
1748 pa_assert_ctl_context();
1749 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1751 if (s->refresh_volume || force_refresh) {
1752 struct pa_cvolume old_real_volume;
1754 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1756 old_real_volume = s->real_volume;
1758 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1761 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1763 update_real_volume(s, &s->real_volume, &s->channel_map);
1764 propagate_real_volume(s, &old_real_volume);
1767 return &s->reference_volume;
1770 /* Called from main thread. In volume sharing cases, only the root source may
1772 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1773 pa_cvolume old_real_volume;
1775 pa_source_assert_ref(s);
1776 pa_assert_ctl_context();
1777 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1778 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1780 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1782 old_real_volume = s->real_volume;
1783 update_real_volume(s, new_real_volume, &s->channel_map);
1784 propagate_real_volume(s, &old_real_volume);
1787 /* Called from main thread */
1788 void pa_source_set_mute(pa_source *s, bool mute, bool save) {
1791 pa_source_assert_ref(s);
1792 pa_assert_ctl_context();
1794 old_muted = s->muted;
1796 if (mute == old_muted) {
1797 s->save_muted |= save;
1802 s->save_muted = save;
1804 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute) {
1805 s->set_mute_in_progress = true;
1807 s->set_mute_in_progress = false;
1810 if (!PA_SOURCE_IS_LINKED(s->state))
1813 pa_log_debug("The mute of source %s changed from %s to %s.", s->name, pa_yes_no(old_muted), pa_yes_no(mute));
1814 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1815 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1816 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_MUTE_CHANGED], s);
1819 /* Called from main thread */
1820 bool pa_source_get_mute(pa_source *s, bool force_refresh) {
1822 pa_source_assert_ref(s);
1823 pa_assert_ctl_context();
1824 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1826 if ((s->refresh_muted || force_refresh) && s->get_mute) {
1829 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
1830 if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &mute, 0, NULL) >= 0)
1831 pa_source_mute_changed(s, mute);
1833 if (s->get_mute(s, &mute) >= 0)
1834 pa_source_mute_changed(s, mute);
1841 /* Called from main thread */
1842 void pa_source_mute_changed(pa_source *s, bool new_muted) {
1843 pa_source_assert_ref(s);
1844 pa_assert_ctl_context();
1845 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1847 if (s->set_mute_in_progress)
1850 /* pa_source_set_mute() does this same check, so this may appear redundant,
1851 * but we must have this here also, because the save parameter of
1852 * pa_source_set_mute() would otherwise have unintended side effects
1853 * (saving the mute state when it shouldn't be saved). */
1854 if (new_muted == s->muted)
1857 pa_source_set_mute(s, new_muted, true);
1860 /* Called from main thread */
1861 bool pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1862 pa_source_assert_ref(s);
1863 pa_assert_ctl_context();
1866 pa_proplist_update(s->proplist, mode, p);
1868 if (PA_SOURCE_IS_LINKED(s->state)) {
1869 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1870 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1876 /* Called from main thread */
1877 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1878 void pa_source_set_description(pa_source *s, const char *description) {
1880 pa_source_assert_ref(s);
1881 pa_assert_ctl_context();
1883 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1886 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1888 if (old && description && pa_streq(old, description))
1892 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1894 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1896 if (PA_SOURCE_IS_LINKED(s->state)) {
1897 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1898 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1902 /* Called from main thread */
1903 unsigned pa_source_linked_by(pa_source *s) {
1904 pa_source_assert_ref(s);
1905 pa_assert_ctl_context();
1906 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1908 return pa_idxset_size(s->outputs);
1911 /* Called from main thread */
1912 unsigned pa_source_used_by(pa_source *s) {
1915 pa_source_assert_ref(s);
1916 pa_assert_ctl_context();
1917 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1919 ret = pa_idxset_size(s->outputs);
1920 pa_assert(ret >= s->n_corked);
1922 return ret - s->n_corked;
1925 /* Called from main thread */
1926 unsigned pa_source_check_suspend(pa_source *s) {
1928 pa_source_output *o;
1931 pa_source_assert_ref(s);
1932 pa_assert_ctl_context();
1934 if (!PA_SOURCE_IS_LINKED(s->state))
1939 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1940 pa_source_output_state_t st;
1942 st = pa_source_output_get_state(o);
1944 /* We do not assert here. It is perfectly valid for a source output to
1945 * be in the INIT state (i.e. created, marked done but not yet put)
1946 * and we should not care if it's unlinked as it won't contribute
1947 * towards our busy status.
1949 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1952 if (st == PA_SOURCE_OUTPUT_CORKED)
1955 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
1964 /* Called from the IO thread */
1965 static void sync_output_volumes_within_thread(pa_source *s) {
1966 pa_source_output *o;
1969 pa_source_assert_ref(s);
1970 pa_source_assert_io_context(s);
1972 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1973 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
1976 o->thread_info.soft_volume = o->soft_volume;
1977 //pa_source_output_request_rewind(o, 0, true, false, false);
1981 /* Called from the IO thread. Only called for the root source in volume sharing
1982 * cases, except for internal recursive calls. */
1983 static void set_shared_volume_within_thread(pa_source *s) {
1984 pa_source_output *o;
1987 pa_source_assert_ref(s);
1989 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
1991 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1992 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1993 set_shared_volume_within_thread(o->destination_source);
1997 /* Called from IO thread, except when it is not */
1998 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1999 pa_source *s = PA_SOURCE(object);
2000 pa_source_assert_ref(s);
2002 switch ((pa_source_message_t) code) {
2004 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
2005 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2007 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
2009 if (o->direct_on_input) {
2010 o->thread_info.direct_on_input = o->direct_on_input;
2011 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
2014 pa_assert(!o->thread_info.attached);
2015 o->thread_info.attached = true;
2020 pa_source_output_set_state_within_thread(o, o->state);
2022 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
2023 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2025 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2027 /* We don't just invalidate the requested latency here,
2028 * because if we are in a move we might need to fix up the
2029 * requested latency. */
2030 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2032 /* In flat volume mode we need to update the volume as
2034 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2037 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
2038 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2040 pa_source_output_set_state_within_thread(o, o->state);
2045 pa_assert(o->thread_info.attached);
2046 o->thread_info.attached = false;
2048 if (o->thread_info.direct_on_input) {
2049 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
2050 o->thread_info.direct_on_input = NULL;
2053 pa_hashmap_remove_and_free(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index));
2054 pa_source_invalidate_requested_latency(s, true);
2056 /* In flat volume mode we need to update the volume as
2058 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2061 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
2062 pa_source *root_source = pa_source_get_master(s);
2064 if (PA_LIKELY(root_source))
2065 set_shared_volume_within_thread(root_source);
2070 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
2072 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2074 pa_source_volume_change_push(s);
2076 /* Fall through ... */
2078 case PA_SOURCE_MESSAGE_SET_VOLUME:
2080 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2081 s->thread_info.soft_volume = s->soft_volume;
2084 /* Fall through ... */
2086 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
2087 sync_output_volumes_within_thread(s);
2090 case PA_SOURCE_MESSAGE_GET_VOLUME:
2092 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
2094 pa_source_volume_change_flush(s);
2095 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2098 /* In case source implementor reset SW volume. */
2099 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2100 s->thread_info.soft_volume = s->soft_volume;
2105 case PA_SOURCE_MESSAGE_SET_MUTE:
2107 if (s->thread_info.soft_muted != s->muted) {
2108 s->thread_info.soft_muted = s->muted;
2111 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2116 case PA_SOURCE_MESSAGE_GET_MUTE:
2118 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2119 return s->get_mute(s, userdata);
2123 case PA_SOURCE_MESSAGE_SET_STATE: {
2125 bool suspend_change =
2126 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2127 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
2129 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2131 if (suspend_change) {
2132 pa_source_output *o;
2135 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2136 if (o->suspend_within_thread)
2137 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2143 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2145 pa_usec_t *usec = userdata;
2146 *usec = pa_source_get_requested_latency_within_thread(s);
2148 /* Yes, that's right, the IO thread will see -1 when no
2149 * explicit requested latency is configured, the main
2150 * thread will see max_latency */
2151 if (*usec == (pa_usec_t) -1)
2152 *usec = s->thread_info.max_latency;
2157 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2158 pa_usec_t *r = userdata;
2160 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2165 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2166 pa_usec_t *r = userdata;
2168 r[0] = s->thread_info.min_latency;
2169 r[1] = s->thread_info.max_latency;
2174 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2176 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2179 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2181 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2184 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2186 *((size_t*) userdata) = s->thread_info.max_rewind;
2189 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2191 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2194 case PA_SOURCE_MESSAGE_GET_LATENCY:
2196 if (s->monitor_of) {
2197 *((pa_usec_t*) userdata) = 0;
2201 /* Implementors need to overwrite this implementation! */
2204 case PA_SOURCE_MESSAGE_SET_PORT:
2206 pa_assert(userdata);
2208 struct source_message_set_port *msg_data = userdata;
2209 msg_data->ret = s->set_port(s, msg_data->port);
2213 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2214 /* This message is sent from IO-thread and handled in main thread. */
2215 pa_assert_ctl_context();
2217 /* Make sure we're not messing with main thread when no longer linked */
2218 if (!PA_SOURCE_IS_LINKED(s->state))
2221 pa_source_get_volume(s, true);
2222 pa_source_get_mute(s, true);
2225 case PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET:
2226 s->thread_info.latency_offset = offset;
2229 case PA_SOURCE_MESSAGE_MAX:
2236 /* Called from main thread */
2237 int pa_source_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
2242 pa_core_assert_ref(c);
2243 pa_assert_ctl_context();
2244 pa_assert(cause != 0);
2246 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2249 if (source->monitor_of)
2252 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2259 /* Called from IO thread */
2260 void pa_source_detach_within_thread(pa_source *s) {
2261 pa_source_output *o;
2264 pa_source_assert_ref(s);
2265 pa_source_assert_io_context(s);
2266 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2268 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2273 /* Called from IO thread */
2274 void pa_source_attach_within_thread(pa_source *s) {
2275 pa_source_output *o;
2278 pa_source_assert_ref(s);
2279 pa_source_assert_io_context(s);
2280 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2282 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2287 /* Called from IO thread */
2288 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2289 pa_usec_t result = (pa_usec_t) -1;
2290 pa_source_output *o;
2293 pa_source_assert_ref(s);
2294 pa_source_assert_io_context(s);
2296 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2297 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2299 if (s->thread_info.requested_latency_valid)
2300 return s->thread_info.requested_latency;
2302 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2303 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2304 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2305 result = o->thread_info.requested_source_latency;
2307 if (result != (pa_usec_t) -1)
2308 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2310 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2311 /* Only cache this if we are fully set up */
2312 s->thread_info.requested_latency = result;
2313 s->thread_info.requested_latency_valid = true;
2319 /* Called from main thread */
2320 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2323 pa_source_assert_ref(s);
2324 pa_assert_ctl_context();
2325 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2327 if (s->state == PA_SOURCE_SUSPENDED)
2330 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2335 /* Called from IO thread */
2336 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2337 pa_source_output *o;
2340 pa_source_assert_ref(s);
2341 pa_source_assert_io_context(s);
2343 if (max_rewind == s->thread_info.max_rewind)
2346 s->thread_info.max_rewind = max_rewind;
2348 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2349 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2350 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2353 /* Called from main thread */
2354 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2355 pa_source_assert_ref(s);
2356 pa_assert_ctl_context();
2358 if (PA_SOURCE_IS_LINKED(s->state))
2359 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2361 pa_source_set_max_rewind_within_thread(s, max_rewind);
2364 /* Called from IO thread */
2365 void pa_source_invalidate_requested_latency(pa_source *s, bool dynamic) {
2366 pa_source_output *o;
2369 pa_source_assert_ref(s);
2370 pa_source_assert_io_context(s);
2372 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2373 s->thread_info.requested_latency_valid = false;
2377 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2379 if (s->update_requested_latency)
2380 s->update_requested_latency(s);
2382 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2383 if (o->update_source_requested_latency)
2384 o->update_source_requested_latency(o);
2388 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2391 /* Called from main thread */
2392 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2393 pa_source_assert_ref(s);
2394 pa_assert_ctl_context();
2396 /* min_latency == 0: no limit
2397 * min_latency anything else: specified limit
2399 * Similar for max_latency */
2401 if (min_latency < ABSOLUTE_MIN_LATENCY)
2402 min_latency = ABSOLUTE_MIN_LATENCY;
2404 if (max_latency <= 0 ||
2405 max_latency > ABSOLUTE_MAX_LATENCY)
2406 max_latency = ABSOLUTE_MAX_LATENCY;
2408 pa_assert(min_latency <= max_latency);
2410 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2411 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2412 max_latency == ABSOLUTE_MAX_LATENCY) ||
2413 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2415 if (PA_SOURCE_IS_LINKED(s->state)) {
2421 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2423 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2426 /* Called from main thread */
2427 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2428 pa_source_assert_ref(s);
2429 pa_assert_ctl_context();
2430 pa_assert(min_latency);
2431 pa_assert(max_latency);
2433 if (PA_SOURCE_IS_LINKED(s->state)) {
2434 pa_usec_t r[2] = { 0, 0 };
2436 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2438 *min_latency = r[0];
2439 *max_latency = r[1];
2441 *min_latency = s->thread_info.min_latency;
2442 *max_latency = s->thread_info.max_latency;
2446 /* Called from IO thread, and from main thread before pa_source_put() is called */
2447 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2448 pa_source_assert_ref(s);
2449 pa_source_assert_io_context(s);
2451 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2452 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2453 pa_assert(min_latency <= max_latency);
2455 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2456 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2457 max_latency == ABSOLUTE_MAX_LATENCY) ||
2458 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2461 if (s->thread_info.min_latency == min_latency &&
2462 s->thread_info.max_latency == max_latency)
2465 s->thread_info.min_latency = min_latency;
2466 s->thread_info.max_latency = max_latency;
2468 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2469 pa_source_output *o;
2472 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2473 if (o->update_source_latency_range)
2474 o->update_source_latency_range(o);
2477 pa_source_invalidate_requested_latency(s, false);
2480 /* Called from main thread, before the source is put */
2481 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2482 pa_source_assert_ref(s);
2483 pa_assert_ctl_context();
2485 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2486 pa_assert(latency == 0);
2490 if (latency < ABSOLUTE_MIN_LATENCY)
2491 latency = ABSOLUTE_MIN_LATENCY;
2493 if (latency > ABSOLUTE_MAX_LATENCY)
2494 latency = ABSOLUTE_MAX_LATENCY;
2496 if (PA_SOURCE_IS_LINKED(s->state))
2497 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2499 s->thread_info.fixed_latency = latency;
2502 /* Called from main thread */
2503 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2506 pa_source_assert_ref(s);
2507 pa_assert_ctl_context();
2509 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2512 if (PA_SOURCE_IS_LINKED(s->state))
2513 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2515 latency = s->thread_info.fixed_latency;
2520 /* Called from IO thread */
2521 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2522 pa_source_assert_ref(s);
2523 pa_source_assert_io_context(s);
2525 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2526 pa_assert(latency == 0);
2527 s->thread_info.fixed_latency = 0;
2532 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2533 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2535 if (s->thread_info.fixed_latency == latency)
2538 s->thread_info.fixed_latency = latency;
2540 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2541 pa_source_output *o;
2544 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2545 if (o->update_source_fixed_latency)
2546 o->update_source_fixed_latency(o);
2549 pa_source_invalidate_requested_latency(s, false);
2552 /* Called from main thread */
2553 void pa_source_set_latency_offset(pa_source *s, int64_t offset) {
2554 pa_source_assert_ref(s);
2556 s->latency_offset = offset;
2558 if (PA_SOURCE_IS_LINKED(s->state))
2559 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET, NULL, offset, NULL) == 0);
2561 s->thread_info.latency_offset = offset;
2564 /* Called from main thread */
2565 size_t pa_source_get_max_rewind(pa_source *s) {
2567 pa_assert_ctl_context();
2568 pa_source_assert_ref(s);
2570 if (!PA_SOURCE_IS_LINKED(s->state))
2571 return s->thread_info.max_rewind;
2573 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2578 /* Called from main context */
2579 int pa_source_set_port(pa_source *s, const char *name, bool save) {
2580 pa_device_port *port;
2583 pa_source_assert_ref(s);
2584 pa_assert_ctl_context();
2587 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2588 return -PA_ERR_NOTIMPLEMENTED;
2592 return -PA_ERR_NOENTITY;
2594 if (!(port = pa_hashmap_get(s->ports, name)))
2595 return -PA_ERR_NOENTITY;
2597 if (s->active_port == port) {
2598 s->save_port = s->save_port || save;
2602 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2603 struct source_message_set_port msg = { .port = port, .ret = 0 };
2604 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2608 ret = s->set_port(s, port);
2611 return -PA_ERR_NOENTITY;
2613 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2615 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2617 s->active_port = port;
2618 s->save_port = save;
2620 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2625 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2627 /* Called from the IO thread. */
2628 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2629 pa_source_volume_change *c;
2630 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2631 c = pa_xnew(pa_source_volume_change, 1);
2633 PA_LLIST_INIT(pa_source_volume_change, c);
2635 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2639 /* Called from the IO thread. */
2640 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2642 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2646 /* Called from the IO thread. */
2647 void pa_source_volume_change_push(pa_source *s) {
2648 pa_source_volume_change *c = NULL;
2649 pa_source_volume_change *nc = NULL;
2650 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2652 const char *direction = NULL;
2655 nc = pa_source_volume_change_new(s);
2657 /* NOTE: There is already more different volumes in pa_source that I can remember.
2658 * Adding one more volume for HW would get us rid of this, but I am trying
2659 * to survive with the ones we already have. */
2660 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2662 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2663 pa_log_debug("Volume not changing");
2664 pa_source_volume_change_free(nc);
2668 nc->at = pa_source_get_latency_within_thread(s);
2669 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2671 if (s->thread_info.volume_changes_tail) {
2672 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2673 /* If volume is going up let's do it a bit late. If it is going
2674 * down let's do it a bit early. */
2675 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2676 if (nc->at + safety_margin > c->at) {
2677 nc->at += safety_margin;
2682 else if (nc->at - safety_margin > c->at) {
2683 nc->at -= safety_margin;
2691 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2692 nc->at += safety_margin;
2695 nc->at -= safety_margin;
2698 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2701 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2704 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2706 /* We can ignore volume events that came earlier but should happen later than this. */
2707 PA_LLIST_FOREACH(c, nc->next) {
2708 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2709 pa_source_volume_change_free(c);
2712 s->thread_info.volume_changes_tail = nc;
2715 /* Called from the IO thread. */
2716 static void pa_source_volume_change_flush(pa_source *s) {
2717 pa_source_volume_change *c = s->thread_info.volume_changes;
2719 s->thread_info.volume_changes = NULL;
2720 s->thread_info.volume_changes_tail = NULL;
2722 pa_source_volume_change *next = c->next;
2723 pa_source_volume_change_free(c);
2728 /* Called from the IO thread. */
2729 bool pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2735 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2741 pa_assert(s->write_volume);
2743 now = pa_rtclock_now();
2745 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2746 pa_source_volume_change *c = s->thread_info.volume_changes;
2747 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2748 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2749 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2751 s->thread_info.current_hw_volume = c->hw_volume;
2752 pa_source_volume_change_free(c);
2758 if (s->thread_info.volume_changes) {
2760 *usec_to_next = s->thread_info.volume_changes->at - now;
2761 if (pa_log_ratelimit(PA_LOG_DEBUG))
2762 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2767 s->thread_info.volume_changes_tail = NULL;
2772 /* Called from the main thread */
2773 /* Gets the list of formats supported by the source. The members and idxset must
2774 * be freed by the caller. */
2775 pa_idxset* pa_source_get_formats(pa_source *s) {
2780 if (s->get_formats) {
2781 /* Source supports format query, all is good */
2782 ret = s->get_formats(s);
2784 /* Source doesn't support format query, so assume it does PCM */
2785 pa_format_info *f = pa_format_info_new();
2786 f->encoding = PA_ENCODING_PCM;
2788 ret = pa_idxset_new(NULL, NULL);
2789 pa_idxset_put(ret, f, NULL);
2795 /* Called from the main thread */
2796 /* Checks if the source can accept this format */
2797 bool pa_source_check_format(pa_source *s, pa_format_info *f) {
2798 pa_idxset *formats = NULL;
2804 formats = pa_source_get_formats(s);
2807 pa_format_info *finfo_device;
2810 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2811 if (pa_format_info_is_compatible(finfo_device, f)) {
2817 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
2823 /* Called from the main thread */
2824 /* Calculates the intersection between formats supported by the source and
2825 * in_formats, and returns these, in the order of the source's formats. */
2826 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2827 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2828 pa_format_info *f_source, *f_in;
2833 if (!in_formats || pa_idxset_isempty(in_formats))
2836 source_formats = pa_source_get_formats(s);
2838 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2839 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2840 if (pa_format_info_is_compatible(f_source, f_in))
2841 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2847 pa_idxset_free(source_formats, (pa_free_cb_t) pa_format_info_free);
2852 /* Called from the main thread. */
2853 void pa_source_set_reference_volume_direct(pa_source *s, const pa_cvolume *volume) {
2854 pa_cvolume old_volume;
2855 char old_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
2856 char new_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
2861 old_volume = s->reference_volume;
2863 if (pa_cvolume_equal(volume, &old_volume))
2866 s->reference_volume = *volume;
2867 pa_log_debug("The reference volume of source %s changed from %s to %s.", s->name,
2868 pa_cvolume_snprint_verbose(old_volume_str, sizeof(old_volume_str), &old_volume, &s->channel_map,
2869 s->flags & PA_SOURCE_DECIBEL_VOLUME),
2870 pa_cvolume_snprint_verbose(new_volume_str, sizeof(new_volume_str), volume, &s->channel_map,
2871 s->flags & PA_SOURCE_DECIBEL_VOLUME));
2873 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2874 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_VOLUME_CHANGED], s);