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;
120 data->muted = !!mute;
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);
570 /* If the source implementor support DB volumes by itself, we should always
571 * try and enable flat volumes too */
572 if ((s->flags & PA_SOURCE_DECIBEL_VOLUME))
573 enable_flat_volume(s, true);
575 if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
576 pa_source *root_source = pa_source_get_master(s);
578 pa_assert(PA_LIKELY(root_source));
580 s->reference_volume = root_source->reference_volume;
581 pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
583 s->real_volume = root_source->real_volume;
584 pa_cvolume_remap(&s->real_volume, &root_source->channel_map, &s->channel_map);
586 /* We assume that if the sink implementor changed the default
587 * volume he did so in real_volume, because that is the usual
588 * place where he is supposed to place his changes. */
589 s->reference_volume = s->real_volume;
591 s->thread_info.soft_volume = s->soft_volume;
592 s->thread_info.soft_muted = s->muted;
593 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
595 pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL)
596 || (s->base_volume == PA_VOLUME_NORM
597 && ((s->flags & PA_SOURCE_DECIBEL_VOLUME || (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)))));
598 pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
599 pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == (s->thread_info.fixed_latency != 0));
601 if (s->suspend_cause)
602 pa_assert_se(source_set_state(s, PA_SOURCE_SUSPENDED) == 0);
604 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
606 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
607 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
610 /* Called from main context */
611 void pa_source_unlink(pa_source *s) {
613 pa_source_output *o, *j = NULL;
616 pa_assert_ctl_context();
618 /* See pa_sink_unlink() for a couple of comments how this function
621 linked = PA_SOURCE_IS_LINKED(s->state);
624 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
626 if (s->state != PA_SOURCE_UNLINKED)
627 pa_namereg_unregister(s->core, s->name);
628 pa_idxset_remove_by_data(s->core->sources, s, NULL);
631 pa_idxset_remove_by_data(s->card->sources, s, NULL);
633 while ((o = pa_idxset_first(s->outputs, NULL))) {
635 pa_source_output_kill(o);
640 source_set_state(s, PA_SOURCE_UNLINKED);
642 s->state = PA_SOURCE_UNLINKED;
647 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
648 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
652 /* Called from main context */
653 static void source_free(pa_object *o) {
654 pa_source *s = PA_SOURCE(o);
657 pa_assert_ctl_context();
658 pa_assert(pa_source_refcnt(s) == 0);
660 if (PA_SOURCE_IS_LINKED(s->state))
663 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
665 pa_idxset_free(s->outputs, NULL);
666 pa_hashmap_free(s->thread_info.outputs);
668 if (s->silence.memblock)
669 pa_memblock_unref(s->silence.memblock);
675 pa_proplist_free(s->proplist);
678 pa_hashmap_free(s->ports);
683 /* Called from main context, and not while the IO thread is active, please */
684 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
685 pa_source_assert_ref(s);
686 pa_assert_ctl_context();
691 /* Called from main context, and not while the IO thread is active, please */
692 void pa_source_update_flags(pa_source *s, pa_source_flags_t mask, pa_source_flags_t value) {
693 pa_source_flags_t old_flags;
694 pa_source_output *output;
697 pa_source_assert_ref(s);
698 pa_assert_ctl_context();
700 /* For now, allow only a minimal set of flags to be changed. */
701 pa_assert((mask & ~(PA_SOURCE_DYNAMIC_LATENCY|PA_SOURCE_LATENCY)) == 0);
703 old_flags = s->flags;
704 s->flags = (s->flags & ~mask) | (value & mask);
706 if (s->flags == old_flags)
709 if ((s->flags & PA_SOURCE_LATENCY) != (old_flags & PA_SOURCE_LATENCY))
710 pa_log_debug("Source %s: LATENCY flag %s.", s->name, (s->flags & PA_SOURCE_LATENCY) ? "enabled" : "disabled");
712 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY) != (old_flags & PA_SOURCE_DYNAMIC_LATENCY))
713 pa_log_debug("Source %s: DYNAMIC_LATENCY flag %s.",
714 s->name, (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ? "enabled" : "disabled");
716 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
717 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_FLAGS_CHANGED], s);
719 PA_IDXSET_FOREACH(output, s->outputs, idx) {
720 if (output->destination_source)
721 pa_source_update_flags(output->destination_source, mask, value);
725 /* Called from IO context, or before _put() from main context */
726 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
727 pa_source_assert_ref(s);
728 pa_source_assert_io_context(s);
730 s->thread_info.rtpoll = p;
733 /* Called from main context */
734 int pa_source_update_status(pa_source*s) {
735 pa_source_assert_ref(s);
736 pa_assert_ctl_context();
737 pa_assert(PA_SOURCE_IS_LINKED(s->state));
739 if (s->state == PA_SOURCE_SUSPENDED)
742 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
745 /* Called from any context - must be threadsafe */
746 void pa_source_set_mixer_dirty(pa_source *s, bool is_dirty) {
747 pa_atomic_store(&s->mixer_dirty, is_dirty ? 1 : 0);
750 /* Called from main context */
751 int pa_source_suspend(pa_source *s, bool suspend, pa_suspend_cause_t cause) {
752 pa_source_assert_ref(s);
753 pa_assert_ctl_context();
754 pa_assert(PA_SOURCE_IS_LINKED(s->state));
755 pa_assert(cause != 0);
757 if (s->monitor_of && cause != PA_SUSPEND_PASSTHROUGH)
758 return -PA_ERR_NOTSUPPORTED;
761 s->suspend_cause |= cause;
763 s->suspend_cause &= ~cause;
765 if (!(s->suspend_cause & PA_SUSPEND_SESSION) && (pa_atomic_load(&s->mixer_dirty) != 0)) {
766 /* This might look racy but isn't: If somebody sets mixer_dirty exactly here,
767 it'll be handled just fine. */
768 pa_source_set_mixer_dirty(s, false);
769 pa_log_debug("Mixer is now accessible. Updating alsa mixer settings.");
770 if (s->active_port && s->set_port) {
771 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
772 struct source_message_set_port msg = { .port = s->active_port, .ret = 0 };
773 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
776 s->set_port(s, s->active_port);
786 if ((pa_source_get_state(s) == PA_SOURCE_SUSPENDED) == !!s->suspend_cause)
789 pa_log_debug("Suspend cause of source %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
791 if (s->suspend_cause)
792 return source_set_state(s, PA_SOURCE_SUSPENDED);
794 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
797 /* Called from main context */
798 int pa_source_sync_suspend(pa_source *s) {
799 pa_sink_state_t state;
801 pa_source_assert_ref(s);
802 pa_assert_ctl_context();
803 pa_assert(PA_SOURCE_IS_LINKED(s->state));
804 pa_assert(s->monitor_of);
806 state = pa_sink_get_state(s->monitor_of);
808 if (state == PA_SINK_SUSPENDED)
809 return source_set_state(s, PA_SOURCE_SUSPENDED);
811 pa_assert(PA_SINK_IS_OPENED(state));
813 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
816 /* Called from main context */
817 pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q) {
818 pa_source_output *o, *n;
821 pa_source_assert_ref(s);
822 pa_assert_ctl_context();
823 pa_assert(PA_SOURCE_IS_LINKED(s->state));
828 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = n) {
829 n = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx));
831 pa_source_output_ref(o);
833 if (pa_source_output_start_move(o) >= 0)
836 pa_source_output_unref(o);
842 /* Called from main context */
843 void pa_source_move_all_finish(pa_source *s, pa_queue *q, bool save) {
846 pa_source_assert_ref(s);
847 pa_assert_ctl_context();
848 pa_assert(PA_SOURCE_IS_LINKED(s->state));
851 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
852 if (pa_source_output_finish_move(o, s, save) < 0)
853 pa_source_output_fail_move(o);
855 pa_source_output_unref(o);
858 pa_queue_free(q, NULL);
861 /* Called from main context */
862 void pa_source_move_all_fail(pa_queue *q) {
865 pa_assert_ctl_context();
868 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
869 pa_source_output_fail_move(o);
870 pa_source_output_unref(o);
873 pa_queue_free(q, NULL);
876 /* Called from IO thread context */
877 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
881 pa_source_assert_ref(s);
882 pa_source_assert_io_context(s);
883 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
888 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
891 pa_log_debug("Processing rewind...");
893 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
894 pa_source_output_assert_ref(o);
895 pa_source_output_process_rewind(o, nbytes);
899 /* Called from IO thread context */
900 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
904 pa_source_assert_ref(s);
905 pa_source_assert_io_context(s);
906 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
909 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
912 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
913 pa_memchunk vchunk = *chunk;
915 pa_memblock_ref(vchunk.memblock);
916 pa_memchunk_make_writable(&vchunk, 0);
918 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
919 pa_silence_memchunk(&vchunk, &s->sample_spec);
921 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
923 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
924 pa_source_output_assert_ref(o);
926 if (!o->thread_info.direct_on_input)
927 pa_source_output_push(o, &vchunk);
930 pa_memblock_unref(vchunk.memblock);
933 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
934 pa_source_output_assert_ref(o);
936 if (!o->thread_info.direct_on_input)
937 pa_source_output_push(o, chunk);
942 /* Called from IO thread context */
943 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
944 pa_source_assert_ref(s);
945 pa_source_assert_io_context(s);
946 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
947 pa_source_output_assert_ref(o);
948 pa_assert(o->thread_info.direct_on_input);
951 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
954 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
955 pa_memchunk vchunk = *chunk;
957 pa_memblock_ref(vchunk.memblock);
958 pa_memchunk_make_writable(&vchunk, 0);
960 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
961 pa_silence_memchunk(&vchunk, &s->sample_spec);
963 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
965 pa_source_output_push(o, &vchunk);
967 pa_memblock_unref(vchunk.memblock);
969 pa_source_output_push(o, chunk);
972 /* Called from main thread */
973 int pa_source_update_rate(pa_source *s, uint32_t rate, bool passthrough) {
975 uint32_t desired_rate = rate;
976 uint32_t default_rate = s->default_sample_rate;
977 uint32_t alternate_rate = s->alternate_sample_rate;
978 bool default_rate_is_usable = false;
979 bool alternate_rate_is_usable = false;
981 if (rate == s->sample_spec.rate)
984 if (!s->update_rate && !s->monitor_of)
987 if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough)) {
988 pa_log_debug("Default and alternate sample rates are the same, so there is no point in switching.");
992 if (PA_SOURCE_IS_RUNNING(s->state)) {
993 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u Hz",
994 s->sample_spec.rate);
999 if (PA_SINK_IS_RUNNING(s->monitor_of->state)) {
1000 pa_log_info("Cannot update rate, this is a monitor source and the sink is running.");
1005 if (PA_UNLIKELY(!pa_sample_rate_valid(desired_rate)))
1008 if (!passthrough && default_rate != desired_rate && alternate_rate != desired_rate) {
1009 if (default_rate % 11025 == 0 && desired_rate % 11025 == 0)
1010 default_rate_is_usable = true;
1011 if (default_rate % 4000 == 0 && desired_rate % 4000 == 0)
1012 default_rate_is_usable = true;
1013 if (alternate_rate && alternate_rate % 11025 == 0 && desired_rate % 11025 == 0)
1014 alternate_rate_is_usable = true;
1015 if (alternate_rate && alternate_rate % 4000 == 0 && desired_rate % 4000 == 0)
1016 alternate_rate_is_usable = true;
1018 if (alternate_rate_is_usable && !default_rate_is_usable)
1019 desired_rate = alternate_rate;
1021 desired_rate = default_rate;
1024 if (desired_rate == s->sample_spec.rate)
1027 if (!passthrough && pa_source_used_by(s) > 0)
1030 pa_log_debug("Suspending source %s due to changing the sample rate.", s->name);
1031 pa_source_suspend(s, true, PA_SUSPEND_INTERNAL);
1034 ret = s->update_rate(s, desired_rate);
1036 /* This is a monitor source. */
1038 /* XXX: This code is written with non-passthrough streams in mind. I
1039 * have no idea whether the behaviour with passthrough streams is
1042 uint32_t old_rate = s->sample_spec.rate;
1044 s->sample_spec.rate = desired_rate;
1045 ret = pa_sink_update_rate(s->monitor_of, desired_rate, false);
1048 /* Changing the sink rate failed, roll back the old rate for
1049 * the monitor source. Why did we set the source rate before
1050 * calling pa_sink_update_rate(), you may ask. The reason is
1051 * that pa_sink_update_rate() tries to update the monitor
1052 * source rate, but we are already in the process of updating
1053 * the monitor source rate, so there's a risk of entering an
1054 * infinite loop. Setting the source rate before calling
1055 * pa_sink_update_rate() makes the rate == s->sample_spec.rate
1056 * check in the beginning of this function return early, so we
1058 s->sample_spec.rate = old_rate;
1066 pa_source_output *o;
1068 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1069 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1070 pa_source_output_update_rate(o);
1073 pa_log_info("Changed sampling rate successfully");
1076 pa_source_suspend(s, false, PA_SUSPEND_INTERNAL);
1081 /* Called from main thread */
1082 pa_usec_t pa_source_get_latency(pa_source *s) {
1085 pa_source_assert_ref(s);
1086 pa_assert_ctl_context();
1087 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1089 if (s->state == PA_SOURCE_SUSPENDED)
1092 if (!(s->flags & PA_SOURCE_LATENCY))
1095 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1097 /* usec is unsigned, so check that the offset can be added to usec without
1099 if (-s->latency_offset <= (int64_t) usec)
1100 usec += s->latency_offset;
1107 /* Called from IO thread */
1108 pa_usec_t pa_source_get_latency_within_thread(pa_source *s) {
1112 pa_source_assert_ref(s);
1113 pa_source_assert_io_context(s);
1114 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1116 /* The returned value is supposed to be in the time domain of the sound card! */
1118 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1121 if (!(s->flags & PA_SOURCE_LATENCY))
1124 o = PA_MSGOBJECT(s);
1126 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1128 if (o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1131 /* usec is unsigned, so check that the offset can be added to usec without
1133 if (-s->thread_info.latency_offset <= (int64_t) usec)
1134 usec += s->thread_info.latency_offset;
1141 /* Called from the main thread (and also from the IO thread while the main
1142 * thread is waiting).
1144 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1145 * set. Instead, flat volume mode is detected by checking whether the root source
1146 * has the flag set. */
1147 bool pa_source_flat_volume_enabled(pa_source *s) {
1148 pa_source_assert_ref(s);
1150 s = pa_source_get_master(s);
1153 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1158 /* Called from the main thread (and also from the IO thread while the main
1159 * thread is waiting). */
1160 pa_source *pa_source_get_master(pa_source *s) {
1161 pa_source_assert_ref(s);
1163 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1164 if (PA_UNLIKELY(!s->output_from_master))
1167 s = s->output_from_master->source;
1173 /* Called from main context */
1174 bool pa_source_is_passthrough(pa_source *s) {
1176 pa_source_assert_ref(s);
1178 /* NB Currently only monitor sources support passthrough mode */
1179 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1182 /* Called from main context */
1183 void pa_source_enter_passthrough(pa_source *s) {
1186 /* set the volume to NORM */
1187 s->saved_volume = *pa_source_get_volume(s, true);
1188 s->saved_save_volume = s->save_volume;
1190 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1191 pa_source_set_volume(s, &volume, true, false);
1194 /* Called from main context */
1195 void pa_source_leave_passthrough(pa_source *s) {
1196 /* Restore source volume to what it was before we entered passthrough mode */
1197 pa_source_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
1199 pa_cvolume_init(&s->saved_volume);
1200 s->saved_save_volume = false;
1203 /* Called from main context. */
1204 static void compute_reference_ratio(pa_source_output *o) {
1206 pa_cvolume remapped;
1209 pa_assert(pa_source_flat_volume_enabled(o->source));
1212 * Calculates the reference ratio from the source's reference
1213 * volume. This basically calculates:
1215 * o->reference_ratio = o->volume / o->source->reference_volume
1218 remapped = o->source->reference_volume;
1219 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1221 o->reference_ratio.channels = o->sample_spec.channels;
1223 for (c = 0; c < o->sample_spec.channels; c++) {
1225 /* We don't update when the source volume is 0 anyway */
1226 if (remapped.values[c] <= PA_VOLUME_MUTED)
1229 /* Don't update the reference ratio unless necessary */
1230 if (pa_sw_volume_multiply(
1231 o->reference_ratio.values[c],
1232 remapped.values[c]) == o->volume.values[c])
1235 o->reference_ratio.values[c] = pa_sw_volume_divide(
1236 o->volume.values[c],
1237 remapped.values[c]);
1241 /* Called from main context. Only called for the root source in volume sharing
1242 * cases, except for internal recursive calls. */
1243 static void compute_reference_ratios(pa_source *s) {
1245 pa_source_output *o;
1247 pa_source_assert_ref(s);
1248 pa_assert_ctl_context();
1249 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1250 pa_assert(pa_source_flat_volume_enabled(s));
1252 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1253 compute_reference_ratio(o);
1255 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1256 compute_reference_ratios(o->destination_source);
1260 /* Called from main context. Only called for the root source in volume sharing
1261 * cases, except for internal recursive calls. */
1262 static void compute_real_ratios(pa_source *s) {
1263 pa_source_output *o;
1266 pa_source_assert_ref(s);
1267 pa_assert_ctl_context();
1268 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1269 pa_assert(pa_source_flat_volume_enabled(s));
1271 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1273 pa_cvolume remapped;
1275 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1276 /* The origin source uses volume sharing, so this input's real ratio
1277 * is handled as a special case - the real ratio must be 0 dB, and
1278 * as a result i->soft_volume must equal i->volume_factor. */
1279 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1280 o->soft_volume = o->volume_factor;
1282 compute_real_ratios(o->destination_source);
1288 * This basically calculates:
1290 * i->real_ratio := i->volume / s->real_volume
1291 * i->soft_volume := i->real_ratio * i->volume_factor
1294 remapped = s->real_volume;
1295 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1297 o->real_ratio.channels = o->sample_spec.channels;
1298 o->soft_volume.channels = o->sample_spec.channels;
1300 for (c = 0; c < o->sample_spec.channels; c++) {
1302 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1303 /* We leave o->real_ratio untouched */
1304 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1308 /* Don't lose accuracy unless necessary */
1309 if (pa_sw_volume_multiply(
1310 o->real_ratio.values[c],
1311 remapped.values[c]) != o->volume.values[c])
1313 o->real_ratio.values[c] = pa_sw_volume_divide(
1314 o->volume.values[c],
1315 remapped.values[c]);
1317 o->soft_volume.values[c] = pa_sw_volume_multiply(
1318 o->real_ratio.values[c],
1319 o->volume_factor.values[c]);
1322 /* We don't copy the soft_volume to the thread_info data
1323 * here. That must be done by the caller */
1327 static pa_cvolume *cvolume_remap_minimal_impact(
1329 const pa_cvolume *template,
1330 const pa_channel_map *from,
1331 const pa_channel_map *to) {
1336 pa_assert(template);
1339 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1340 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1342 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1343 * mapping from source output to source volumes:
1345 * If template is a possible remapping from v it is used instead
1346 * of remapping anew.
1348 * If the channel maps don't match we set an all-channel volume on
1349 * the source to ensure that changing a volume on one stream has no
1350 * effect that cannot be compensated for in another stream that
1351 * does not have the same channel map as the source. */
1353 if (pa_channel_map_equal(from, to))
1357 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1362 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1366 /* Called from main thread. Only called for the root source in volume sharing
1367 * cases, except for internal recursive calls. */
1368 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1369 pa_source_output *o;
1372 pa_source_assert_ref(s);
1373 pa_assert(max_volume);
1374 pa_assert(channel_map);
1375 pa_assert(pa_source_flat_volume_enabled(s));
1377 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1378 pa_cvolume remapped;
1380 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1381 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1383 /* Ignore this output. The origin source uses volume sharing, so this
1384 * output's volume will be set to be equal to the root source's real
1385 * volume. Obviously this output's current volume must not then
1386 * affect what the root source's real volume will be. */
1390 remapped = o->volume;
1391 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1392 pa_cvolume_merge(max_volume, max_volume, &remapped);
1396 /* Called from main thread. Only called for the root source in volume sharing
1397 * cases, except for internal recursive calls. */
1398 static bool has_outputs(pa_source *s) {
1399 pa_source_output *o;
1402 pa_source_assert_ref(s);
1404 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1405 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1412 /* Called from main thread. Only called for the root source in volume sharing
1413 * cases, except for internal recursive calls. */
1414 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1415 pa_source_output *o;
1418 pa_source_assert_ref(s);
1419 pa_assert(new_volume);
1420 pa_assert(channel_map);
1422 s->real_volume = *new_volume;
1423 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1425 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1426 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1427 if (pa_source_flat_volume_enabled(s)) {
1428 pa_cvolume new_output_volume;
1430 /* Follow the root source's real volume. */
1431 new_output_volume = *new_volume;
1432 pa_cvolume_remap(&new_output_volume, channel_map, &o->channel_map);
1433 pa_source_output_set_volume_direct(o, &new_output_volume);
1434 compute_reference_ratio(o);
1437 update_real_volume(o->destination_source, new_volume, channel_map);
1442 /* Called from main thread. Only called for the root source in shared volume
1444 static void compute_real_volume(pa_source *s) {
1445 pa_source_assert_ref(s);
1446 pa_assert_ctl_context();
1447 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1448 pa_assert(pa_source_flat_volume_enabled(s));
1449 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1451 /* This determines the maximum volume of all streams and sets
1452 * s->real_volume accordingly. */
1454 if (!has_outputs(s)) {
1455 /* In the special case that we have no source outputs we leave the
1456 * volume unmodified. */
1457 update_real_volume(s, &s->reference_volume, &s->channel_map);
1461 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1463 /* First let's determine the new maximum volume of all outputs
1464 * connected to this source */
1465 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1466 update_real_volume(s, &s->real_volume, &s->channel_map);
1468 /* Then, let's update the real ratios/soft volumes of all outputs
1469 * connected to this source */
1470 compute_real_ratios(s);
1473 /* Called from main thread. Only called for the root source in shared volume
1474 * cases, except for internal recursive calls. */
1475 static void propagate_reference_volume(pa_source *s) {
1476 pa_source_output *o;
1479 pa_source_assert_ref(s);
1480 pa_assert_ctl_context();
1481 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1482 pa_assert(pa_source_flat_volume_enabled(s));
1484 /* This is called whenever the source volume changes that is not
1485 * caused by a source output volume change. We need to fix up the
1486 * source output volumes accordingly */
1488 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1489 pa_cvolume new_volume;
1491 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1492 propagate_reference_volume(o->destination_source);
1494 /* Since the origin source uses volume sharing, this output's volume
1495 * needs to be updated to match the root source's real volume, but
1496 * that will be done later in update_shared_real_volume(). */
1500 /* This basically calculates:
1502 * o->volume := o->reference_volume * o->reference_ratio */
1504 new_volume = s->reference_volume;
1505 pa_cvolume_remap(&new_volume, &s->channel_map, &o->channel_map);
1506 pa_sw_cvolume_multiply(&new_volume, &new_volume, &o->reference_ratio);
1507 pa_source_output_set_volume_direct(o, &new_volume);
1511 /* Called from main thread. Only called for the root source in volume sharing
1512 * cases, except for internal recursive calls. The return value indicates
1513 * whether any reference volume actually changed. */
1514 static bool update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
1516 bool reference_volume_changed;
1517 pa_source_output *o;
1520 pa_source_assert_ref(s);
1521 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1523 pa_assert(channel_map);
1524 pa_assert(pa_cvolume_valid(v));
1527 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1529 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1530 pa_source_set_reference_volume_direct(s, &volume);
1532 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1534 if (!reference_volume_changed && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1535 /* If the root source's volume doesn't change, then there can't be any
1536 * changes in the other source in the source tree either.
1538 * It's probably theoretically possible that even if the root source's
1539 * volume changes slightly, some filter source doesn't change its volume
1540 * due to rounding errors. If that happens, we still want to propagate
1541 * the changed root source volume to the sources connected to the
1542 * intermediate source that didn't change its volume. This theoretical
1543 * possibility is the reason why we have that !(s->flags &
1544 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1545 * notice even if we returned here false always if
1546 * reference_volume_changed is false. */
1549 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1550 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1551 update_reference_volume(o->destination_source, v, channel_map, false);
1557 /* Called from main thread */
1558 void pa_source_set_volume(
1560 const pa_cvolume *volume,
1564 pa_cvolume new_reference_volume;
1565 pa_source *root_source;
1567 pa_source_assert_ref(s);
1568 pa_assert_ctl_context();
1569 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1570 pa_assert(!volume || pa_cvolume_valid(volume));
1571 pa_assert(volume || pa_source_flat_volume_enabled(s));
1572 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1574 /* make sure we don't change the volume in PASSTHROUGH mode ...
1575 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1576 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1577 pa_log_warn("Cannot change volume, source is monitor of a PASSTHROUGH sink");
1581 /* In case of volume sharing, the volume is set for the root source first,
1582 * from which it's then propagated to the sharing sources. */
1583 root_source = pa_source_get_master(s);
1585 if (PA_UNLIKELY(!root_source))
1588 /* As a special exception we accept mono volumes on all sources --
1589 * even on those with more complex channel maps */
1592 if (pa_cvolume_compatible(volume, &s->sample_spec))
1593 new_reference_volume = *volume;
1595 new_reference_volume = s->reference_volume;
1596 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1599 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1601 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1602 if (pa_source_flat_volume_enabled(root_source)) {
1603 /* OK, propagate this volume change back to the outputs */
1604 propagate_reference_volume(root_source);
1606 /* And now recalculate the real volume */
1607 compute_real_volume(root_source);
1609 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1613 /* If volume is NULL we synchronize the source's real and
1614 * reference volumes with the stream volumes. */
1616 pa_assert(pa_source_flat_volume_enabled(root_source));
1618 /* Ok, let's determine the new real volume */
1619 compute_real_volume(root_source);
1621 /* Let's 'push' the reference volume if necessary */
1622 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_source->real_volume);
1623 /* If the source and its root don't have the same number of channels, we need to remap */
1624 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1625 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1626 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1628 /* Now that the reference volume is updated, we can update the streams'
1629 * reference ratios. */
1630 compute_reference_ratios(root_source);
1633 if (root_source->set_volume) {
1634 /* If we have a function set_volume(), then we do not apply a
1635 * soft volume by default. However, set_volume() is free to
1636 * apply one to root_source->soft_volume */
1638 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1639 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1640 root_source->set_volume(root_source);
1643 /* If we have no function set_volume(), then the soft volume
1644 * becomes the real volume */
1645 root_source->soft_volume = root_source->real_volume;
1647 /* This tells the source that soft volume and/or real volume changed */
1649 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1652 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1653 * Only to be called by source implementor */
1654 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1656 pa_source_assert_ref(s);
1657 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1659 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1660 pa_source_assert_io_context(s);
1662 pa_assert_ctl_context();
1665 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1667 s->soft_volume = *volume;
1669 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1670 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1672 s->thread_info.soft_volume = s->soft_volume;
1675 /* Called from the main thread. Only called for the root source in volume sharing
1676 * cases, except for internal recursive calls. */
1677 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1678 pa_source_output *o;
1681 pa_source_assert_ref(s);
1682 pa_assert(old_real_volume);
1683 pa_assert_ctl_context();
1684 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1686 /* This is called when the hardware's real volume changes due to
1687 * some external event. We copy the real volume into our
1688 * reference volume and then rebuild the stream volumes based on
1689 * i->real_ratio which should stay fixed. */
1691 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1692 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1695 /* 1. Make the real volume the reference volume */
1696 update_reference_volume(s, &s->real_volume, &s->channel_map, true);
1699 if (pa_source_flat_volume_enabled(s)) {
1700 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1701 pa_cvolume new_volume;
1703 /* 2. Since the source's reference and real volumes are equal
1704 * now our ratios should be too. */
1705 o->reference_ratio = o->real_ratio;
1707 /* 3. Recalculate the new stream reference volume based on the
1708 * reference ratio and the sink's reference volume.
1710 * This basically calculates:
1712 * o->volume = s->reference_volume * o->reference_ratio
1714 * This is identical to propagate_reference_volume() */
1715 new_volume = s->reference_volume;
1716 pa_cvolume_remap(&new_volume, &s->channel_map, &o->channel_map);
1717 pa_sw_cvolume_multiply(&new_volume, &new_volume, &o->reference_ratio);
1718 pa_source_output_set_volume_direct(o, &new_volume);
1720 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1721 propagate_real_volume(o->destination_source, old_real_volume);
1725 /* Something got changed in the hardware. It probably makes sense
1726 * to save changed hw settings given that hw volume changes not
1727 * triggered by PA are almost certainly done by the user. */
1728 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1729 s->save_volume = true;
1732 /* Called from io thread */
1733 void pa_source_update_volume_and_mute(pa_source *s) {
1735 pa_source_assert_io_context(s);
1737 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1740 /* Called from main thread */
1741 const pa_cvolume *pa_source_get_volume(pa_source *s, bool force_refresh) {
1742 pa_source_assert_ref(s);
1743 pa_assert_ctl_context();
1744 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1746 if (s->refresh_volume || force_refresh) {
1747 struct pa_cvolume old_real_volume;
1749 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1751 old_real_volume = s->real_volume;
1753 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1756 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1758 update_real_volume(s, &s->real_volume, &s->channel_map);
1759 propagate_real_volume(s, &old_real_volume);
1762 return &s->reference_volume;
1765 /* Called from main thread. In volume sharing cases, only the root source may
1767 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1768 pa_cvolume old_real_volume;
1770 pa_source_assert_ref(s);
1771 pa_assert_ctl_context();
1772 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1773 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1775 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1777 old_real_volume = s->real_volume;
1778 update_real_volume(s, new_real_volume, &s->channel_map);
1779 propagate_real_volume(s, &old_real_volume);
1782 /* Called from main thread */
1783 void pa_source_set_mute(pa_source *s, bool mute, bool save) {
1786 pa_source_assert_ref(s);
1787 pa_assert_ctl_context();
1789 old_muted = s->muted;
1791 if (mute == old_muted) {
1792 s->save_muted |= save;
1797 s->save_muted = save;
1799 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute) {
1800 s->set_mute_in_progress = true;
1802 s->set_mute_in_progress = false;
1805 if (!PA_SOURCE_IS_LINKED(s->state))
1808 pa_log_debug("The mute of source %s changed from %s to %s.", s->name, pa_yes_no(old_muted), pa_yes_no(mute));
1809 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1810 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1811 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_MUTE_CHANGED], s);
1814 /* Called from main thread */
1815 bool pa_source_get_mute(pa_source *s, bool force_refresh) {
1817 pa_source_assert_ref(s);
1818 pa_assert_ctl_context();
1819 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1821 if ((s->refresh_muted || force_refresh) && s->get_mute) {
1824 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
1825 if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &mute, 0, NULL) >= 0)
1826 pa_source_mute_changed(s, mute);
1828 if (s->get_mute(s, &mute) >= 0)
1829 pa_source_mute_changed(s, mute);
1836 /* Called from main thread */
1837 void pa_source_mute_changed(pa_source *s, bool new_muted) {
1838 pa_source_assert_ref(s);
1839 pa_assert_ctl_context();
1840 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1842 if (s->set_mute_in_progress)
1845 /* pa_source_set_mute() does this same check, so this may appear redundant,
1846 * but we must have this here also, because the save parameter of
1847 * pa_source_set_mute() would otherwise have unintended side effects
1848 * (saving the mute state when it shouldn't be saved). */
1849 if (new_muted == s->muted)
1852 pa_source_set_mute(s, new_muted, true);
1855 /* Called from main thread */
1856 bool pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1857 pa_source_assert_ref(s);
1858 pa_assert_ctl_context();
1861 pa_proplist_update(s->proplist, mode, p);
1863 if (PA_SOURCE_IS_LINKED(s->state)) {
1864 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1865 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1871 /* Called from main thread */
1872 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1873 void pa_source_set_description(pa_source *s, const char *description) {
1875 pa_source_assert_ref(s);
1876 pa_assert_ctl_context();
1878 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1881 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1883 if (old && description && pa_streq(old, description))
1887 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1889 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1891 if (PA_SOURCE_IS_LINKED(s->state)) {
1892 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1893 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1897 /* Called from main thread */
1898 unsigned pa_source_linked_by(pa_source *s) {
1899 pa_source_assert_ref(s);
1900 pa_assert_ctl_context();
1901 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1903 return pa_idxset_size(s->outputs);
1906 /* Called from main thread */
1907 unsigned pa_source_used_by(pa_source *s) {
1910 pa_source_assert_ref(s);
1911 pa_assert_ctl_context();
1912 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1914 ret = pa_idxset_size(s->outputs);
1915 pa_assert(ret >= s->n_corked);
1917 return ret - s->n_corked;
1920 /* Called from main thread */
1921 unsigned pa_source_check_suspend(pa_source *s) {
1923 pa_source_output *o;
1926 pa_source_assert_ref(s);
1927 pa_assert_ctl_context();
1929 if (!PA_SOURCE_IS_LINKED(s->state))
1934 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1935 pa_source_output_state_t st;
1937 st = pa_source_output_get_state(o);
1939 /* We do not assert here. It is perfectly valid for a source output to
1940 * be in the INIT state (i.e. created, marked done but not yet put)
1941 * and we should not care if it's unlinked as it won't contribute
1942 * towards our busy status.
1944 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1947 if (st == PA_SOURCE_OUTPUT_CORKED)
1950 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
1959 /* Called from the IO thread */
1960 static void sync_output_volumes_within_thread(pa_source *s) {
1961 pa_source_output *o;
1964 pa_source_assert_ref(s);
1965 pa_source_assert_io_context(s);
1967 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1968 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
1971 o->thread_info.soft_volume = o->soft_volume;
1972 //pa_source_output_request_rewind(o, 0, true, false, false);
1976 /* Called from the IO thread. Only called for the root source in volume sharing
1977 * cases, except for internal recursive calls. */
1978 static void set_shared_volume_within_thread(pa_source *s) {
1979 pa_source_output *o;
1982 pa_source_assert_ref(s);
1984 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
1986 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1987 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1988 set_shared_volume_within_thread(o->destination_source);
1992 /* Called from IO thread, except when it is not */
1993 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1994 pa_source *s = PA_SOURCE(object);
1995 pa_source_assert_ref(s);
1997 switch ((pa_source_message_t) code) {
1999 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
2000 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2002 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
2004 if (o->direct_on_input) {
2005 o->thread_info.direct_on_input = o->direct_on_input;
2006 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
2009 pa_assert(!o->thread_info.attached);
2010 o->thread_info.attached = true;
2015 pa_source_output_set_state_within_thread(o, o->state);
2017 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
2018 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2020 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2022 /* We don't just invalidate the requested latency here,
2023 * because if we are in a move we might need to fix up the
2024 * requested latency. */
2025 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2027 /* In flat volume mode we need to update the volume as
2029 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2032 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
2033 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2035 pa_source_output_set_state_within_thread(o, o->state);
2040 pa_assert(o->thread_info.attached);
2041 o->thread_info.attached = false;
2043 if (o->thread_info.direct_on_input) {
2044 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
2045 o->thread_info.direct_on_input = NULL;
2048 pa_hashmap_remove_and_free(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index));
2049 pa_source_invalidate_requested_latency(s, true);
2051 /* In flat volume mode we need to update the volume as
2053 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2056 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
2057 pa_source *root_source = pa_source_get_master(s);
2059 if (PA_LIKELY(root_source))
2060 set_shared_volume_within_thread(root_source);
2065 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
2067 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2069 pa_source_volume_change_push(s);
2071 /* Fall through ... */
2073 case PA_SOURCE_MESSAGE_SET_VOLUME:
2075 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2076 s->thread_info.soft_volume = s->soft_volume;
2079 /* Fall through ... */
2081 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
2082 sync_output_volumes_within_thread(s);
2085 case PA_SOURCE_MESSAGE_GET_VOLUME:
2087 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
2089 pa_source_volume_change_flush(s);
2090 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2093 /* In case source implementor reset SW volume. */
2094 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2095 s->thread_info.soft_volume = s->soft_volume;
2100 case PA_SOURCE_MESSAGE_SET_MUTE:
2102 if (s->thread_info.soft_muted != s->muted) {
2103 s->thread_info.soft_muted = s->muted;
2106 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2111 case PA_SOURCE_MESSAGE_GET_MUTE:
2113 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2114 return s->get_mute(s, userdata);
2118 case PA_SOURCE_MESSAGE_SET_STATE: {
2120 bool suspend_change =
2121 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2122 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
2124 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2126 if (suspend_change) {
2127 pa_source_output *o;
2130 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2131 if (o->suspend_within_thread)
2132 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2138 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2140 pa_usec_t *usec = userdata;
2141 *usec = pa_source_get_requested_latency_within_thread(s);
2143 /* Yes, that's right, the IO thread will see -1 when no
2144 * explicit requested latency is configured, the main
2145 * thread will see max_latency */
2146 if (*usec == (pa_usec_t) -1)
2147 *usec = s->thread_info.max_latency;
2152 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2153 pa_usec_t *r = userdata;
2155 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2160 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2161 pa_usec_t *r = userdata;
2163 r[0] = s->thread_info.min_latency;
2164 r[1] = s->thread_info.max_latency;
2169 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2171 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2174 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2176 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2179 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2181 *((size_t*) userdata) = s->thread_info.max_rewind;
2184 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2186 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2189 case PA_SOURCE_MESSAGE_GET_LATENCY:
2191 if (s->monitor_of) {
2192 *((pa_usec_t*) userdata) = 0;
2196 /* Implementors need to overwrite this implementation! */
2199 case PA_SOURCE_MESSAGE_SET_PORT:
2201 pa_assert(userdata);
2203 struct source_message_set_port *msg_data = userdata;
2204 msg_data->ret = s->set_port(s, msg_data->port);
2208 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2209 /* This message is sent from IO-thread and handled in main thread. */
2210 pa_assert_ctl_context();
2212 /* Make sure we're not messing with main thread when no longer linked */
2213 if (!PA_SOURCE_IS_LINKED(s->state))
2216 pa_source_get_volume(s, true);
2217 pa_source_get_mute(s, true);
2220 case PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET:
2221 s->thread_info.latency_offset = offset;
2224 case PA_SOURCE_MESSAGE_MAX:
2231 /* Called from main thread */
2232 int pa_source_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
2237 pa_core_assert_ref(c);
2238 pa_assert_ctl_context();
2239 pa_assert(cause != 0);
2241 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2244 if (source->monitor_of)
2247 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2254 /* Called from IO thread */
2255 void pa_source_detach_within_thread(pa_source *s) {
2256 pa_source_output *o;
2259 pa_source_assert_ref(s);
2260 pa_source_assert_io_context(s);
2261 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2263 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2268 /* Called from IO thread */
2269 void pa_source_attach_within_thread(pa_source *s) {
2270 pa_source_output *o;
2273 pa_source_assert_ref(s);
2274 pa_source_assert_io_context(s);
2275 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2277 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2282 /* Called from IO thread */
2283 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2284 pa_usec_t result = (pa_usec_t) -1;
2285 pa_source_output *o;
2288 pa_source_assert_ref(s);
2289 pa_source_assert_io_context(s);
2291 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2292 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2294 if (s->thread_info.requested_latency_valid)
2295 return s->thread_info.requested_latency;
2297 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2298 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2299 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2300 result = o->thread_info.requested_source_latency;
2302 if (result != (pa_usec_t) -1)
2303 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2305 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2306 /* Only cache this if we are fully set up */
2307 s->thread_info.requested_latency = result;
2308 s->thread_info.requested_latency_valid = true;
2314 /* Called from main thread */
2315 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2318 pa_source_assert_ref(s);
2319 pa_assert_ctl_context();
2320 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2322 if (s->state == PA_SOURCE_SUSPENDED)
2325 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2330 /* Called from IO thread */
2331 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2332 pa_source_output *o;
2335 pa_source_assert_ref(s);
2336 pa_source_assert_io_context(s);
2338 if (max_rewind == s->thread_info.max_rewind)
2341 s->thread_info.max_rewind = max_rewind;
2343 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2344 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2345 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2348 /* Called from main thread */
2349 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2350 pa_source_assert_ref(s);
2351 pa_assert_ctl_context();
2353 if (PA_SOURCE_IS_LINKED(s->state))
2354 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2356 pa_source_set_max_rewind_within_thread(s, max_rewind);
2359 /* Called from IO thread */
2360 void pa_source_invalidate_requested_latency(pa_source *s, bool dynamic) {
2361 pa_source_output *o;
2364 pa_source_assert_ref(s);
2365 pa_source_assert_io_context(s);
2367 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2368 s->thread_info.requested_latency_valid = false;
2372 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2374 if (s->update_requested_latency)
2375 s->update_requested_latency(s);
2377 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2378 if (o->update_source_requested_latency)
2379 o->update_source_requested_latency(o);
2383 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2386 /* Called from main thread */
2387 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2388 pa_source_assert_ref(s);
2389 pa_assert_ctl_context();
2391 /* min_latency == 0: no limit
2392 * min_latency anything else: specified limit
2394 * Similar for max_latency */
2396 if (min_latency < ABSOLUTE_MIN_LATENCY)
2397 min_latency = ABSOLUTE_MIN_LATENCY;
2399 if (max_latency <= 0 ||
2400 max_latency > ABSOLUTE_MAX_LATENCY)
2401 max_latency = ABSOLUTE_MAX_LATENCY;
2403 pa_assert(min_latency <= max_latency);
2405 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2406 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2407 max_latency == ABSOLUTE_MAX_LATENCY) ||
2408 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2410 if (PA_SOURCE_IS_LINKED(s->state)) {
2416 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2418 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2421 /* Called from main thread */
2422 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2423 pa_source_assert_ref(s);
2424 pa_assert_ctl_context();
2425 pa_assert(min_latency);
2426 pa_assert(max_latency);
2428 if (PA_SOURCE_IS_LINKED(s->state)) {
2429 pa_usec_t r[2] = { 0, 0 };
2431 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2433 *min_latency = r[0];
2434 *max_latency = r[1];
2436 *min_latency = s->thread_info.min_latency;
2437 *max_latency = s->thread_info.max_latency;
2441 /* Called from IO thread, and from main thread before pa_source_put() is called */
2442 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2443 pa_source_assert_ref(s);
2444 pa_source_assert_io_context(s);
2446 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2447 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2448 pa_assert(min_latency <= max_latency);
2450 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2451 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2452 max_latency == ABSOLUTE_MAX_LATENCY) ||
2453 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2456 if (s->thread_info.min_latency == min_latency &&
2457 s->thread_info.max_latency == max_latency)
2460 s->thread_info.min_latency = min_latency;
2461 s->thread_info.max_latency = max_latency;
2463 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2464 pa_source_output *o;
2467 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2468 if (o->update_source_latency_range)
2469 o->update_source_latency_range(o);
2472 pa_source_invalidate_requested_latency(s, false);
2475 /* Called from main thread, before the source is put */
2476 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2477 pa_source_assert_ref(s);
2478 pa_assert_ctl_context();
2480 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2481 pa_assert(latency == 0);
2485 if (latency < ABSOLUTE_MIN_LATENCY)
2486 latency = ABSOLUTE_MIN_LATENCY;
2488 if (latency > ABSOLUTE_MAX_LATENCY)
2489 latency = ABSOLUTE_MAX_LATENCY;
2491 if (PA_SOURCE_IS_LINKED(s->state))
2492 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2494 s->thread_info.fixed_latency = latency;
2497 /* Called from main thread */
2498 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2501 pa_source_assert_ref(s);
2502 pa_assert_ctl_context();
2504 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2507 if (PA_SOURCE_IS_LINKED(s->state))
2508 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2510 latency = s->thread_info.fixed_latency;
2515 /* Called from IO thread */
2516 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2517 pa_source_assert_ref(s);
2518 pa_source_assert_io_context(s);
2520 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2521 pa_assert(latency == 0);
2522 s->thread_info.fixed_latency = 0;
2527 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2528 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2530 if (s->thread_info.fixed_latency == latency)
2533 s->thread_info.fixed_latency = latency;
2535 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2536 pa_source_output *o;
2539 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2540 if (o->update_source_fixed_latency)
2541 o->update_source_fixed_latency(o);
2544 pa_source_invalidate_requested_latency(s, false);
2547 /* Called from main thread */
2548 void pa_source_set_latency_offset(pa_source *s, int64_t offset) {
2549 pa_source_assert_ref(s);
2551 s->latency_offset = offset;
2553 if (PA_SOURCE_IS_LINKED(s->state))
2554 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET, NULL, offset, NULL) == 0);
2556 s->thread_info.latency_offset = offset;
2559 /* Called from main thread */
2560 size_t pa_source_get_max_rewind(pa_source *s) {
2562 pa_assert_ctl_context();
2563 pa_source_assert_ref(s);
2565 if (!PA_SOURCE_IS_LINKED(s->state))
2566 return s->thread_info.max_rewind;
2568 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2573 /* Called from main context */
2574 int pa_source_set_port(pa_source *s, const char *name, bool save) {
2575 pa_device_port *port;
2578 pa_source_assert_ref(s);
2579 pa_assert_ctl_context();
2582 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2583 return -PA_ERR_NOTIMPLEMENTED;
2587 return -PA_ERR_NOENTITY;
2589 if (!(port = pa_hashmap_get(s->ports, name)))
2590 return -PA_ERR_NOENTITY;
2592 if (s->active_port == port) {
2593 s->save_port = s->save_port || save;
2597 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2598 struct source_message_set_port msg = { .port = port, .ret = 0 };
2599 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2603 ret = s->set_port(s, port);
2606 return -PA_ERR_NOENTITY;
2608 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2610 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2612 s->active_port = port;
2613 s->save_port = save;
2615 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2620 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2622 /* Called from the IO thread. */
2623 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2624 pa_source_volume_change *c;
2625 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2626 c = pa_xnew(pa_source_volume_change, 1);
2628 PA_LLIST_INIT(pa_source_volume_change, c);
2630 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2634 /* Called from the IO thread. */
2635 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2637 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2641 /* Called from the IO thread. */
2642 void pa_source_volume_change_push(pa_source *s) {
2643 pa_source_volume_change *c = NULL;
2644 pa_source_volume_change *nc = NULL;
2645 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2647 const char *direction = NULL;
2650 nc = pa_source_volume_change_new(s);
2652 /* NOTE: There is already more different volumes in pa_source that I can remember.
2653 * Adding one more volume for HW would get us rid of this, but I am trying
2654 * to survive with the ones we already have. */
2655 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2657 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2658 pa_log_debug("Volume not changing");
2659 pa_source_volume_change_free(nc);
2663 nc->at = pa_source_get_latency_within_thread(s);
2664 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2666 if (s->thread_info.volume_changes_tail) {
2667 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2668 /* If volume is going up let's do it a bit late. If it is going
2669 * down let's do it a bit early. */
2670 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2671 if (nc->at + safety_margin > c->at) {
2672 nc->at += safety_margin;
2677 else if (nc->at - safety_margin > c->at) {
2678 nc->at -= safety_margin;
2686 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2687 nc->at += safety_margin;
2690 nc->at -= safety_margin;
2693 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2696 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2699 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2701 /* We can ignore volume events that came earlier but should happen later than this. */
2702 PA_LLIST_FOREACH(c, nc->next) {
2703 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2704 pa_source_volume_change_free(c);
2707 s->thread_info.volume_changes_tail = nc;
2710 /* Called from the IO thread. */
2711 static void pa_source_volume_change_flush(pa_source *s) {
2712 pa_source_volume_change *c = s->thread_info.volume_changes;
2714 s->thread_info.volume_changes = NULL;
2715 s->thread_info.volume_changes_tail = NULL;
2717 pa_source_volume_change *next = c->next;
2718 pa_source_volume_change_free(c);
2723 /* Called from the IO thread. */
2724 bool pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2730 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2736 pa_assert(s->write_volume);
2738 now = pa_rtclock_now();
2740 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2741 pa_source_volume_change *c = s->thread_info.volume_changes;
2742 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2743 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2744 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2746 s->thread_info.current_hw_volume = c->hw_volume;
2747 pa_source_volume_change_free(c);
2753 if (s->thread_info.volume_changes) {
2755 *usec_to_next = s->thread_info.volume_changes->at - now;
2756 if (pa_log_ratelimit(PA_LOG_DEBUG))
2757 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2762 s->thread_info.volume_changes_tail = NULL;
2767 /* Called from the main thread */
2768 /* Gets the list of formats supported by the source. The members and idxset must
2769 * be freed by the caller. */
2770 pa_idxset* pa_source_get_formats(pa_source *s) {
2775 if (s->get_formats) {
2776 /* Source supports format query, all is good */
2777 ret = s->get_formats(s);
2779 /* Source doesn't support format query, so assume it does PCM */
2780 pa_format_info *f = pa_format_info_new();
2781 f->encoding = PA_ENCODING_PCM;
2783 ret = pa_idxset_new(NULL, NULL);
2784 pa_idxset_put(ret, f, NULL);
2790 /* Called from the main thread */
2791 /* Checks if the source can accept this format */
2792 bool pa_source_check_format(pa_source *s, pa_format_info *f) {
2793 pa_idxset *formats = NULL;
2799 formats = pa_source_get_formats(s);
2802 pa_format_info *finfo_device;
2805 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2806 if (pa_format_info_is_compatible(finfo_device, f)) {
2812 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
2818 /* Called from the main thread */
2819 /* Calculates the intersection between formats supported by the source and
2820 * in_formats, and returns these, in the order of the source's formats. */
2821 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2822 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2823 pa_format_info *f_source, *f_in;
2828 if (!in_formats || pa_idxset_isempty(in_formats))
2831 source_formats = pa_source_get_formats(s);
2833 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2834 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2835 if (pa_format_info_is_compatible(f_source, f_in))
2836 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2842 pa_idxset_free(source_formats, (pa_free_cb_t) pa_format_info_free);
2847 /* Called from the main thread. */
2848 void pa_source_set_reference_volume_direct(pa_source *s, const pa_cvolume *volume) {
2849 pa_cvolume old_volume;
2850 char old_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
2851 char new_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
2856 old_volume = s->reference_volume;
2858 if (pa_cvolume_equal(volume, &old_volume))
2861 s->reference_volume = *volume;
2862 pa_log_debug("The reference volume of source %s changed from %s to %s.", s->name,
2863 pa_cvolume_snprint_verbose(old_volume_str, sizeof(old_volume_str), &old_volume, &s->channel_map,
2864 s->flags & PA_SOURCE_DECIBEL_VOLUME),
2865 pa_cvolume_snprint_verbose(new_volume_str, sizeof(new_volume_str), volume, &s->channel_map,
2866 s->flags & PA_SOURCE_DECIBEL_VOLUME));
2868 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2869 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_VOLUME_CHANGED], s);