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);
222 pa_device_init_icon(data->proplist, false);
223 pa_device_init_intended_roles(data->proplist);
225 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
227 pa_namereg_unregister(core, name);
231 s->parent.parent.free = source_free;
232 s->parent.process_msg = pa_source_process_msg;
235 s->state = PA_SOURCE_INIT;
238 s->suspend_cause = data->suspend_cause;
239 pa_source_set_mixer_dirty(s, false);
240 s->name = pa_xstrdup(name);
241 s->proplist = pa_proplist_copy(data->proplist);
242 s->driver = pa_xstrdup(pa_path_get_filename(data->driver));
243 s->module = data->module;
244 s->card = data->card;
246 s->priority = pa_device_init_priority(s->proplist);
248 s->sample_spec = data->sample_spec;
249 s->channel_map = data->channel_map;
250 s->default_sample_rate = s->sample_spec.rate;
252 if (data->alternate_sample_rate_is_set)
253 s->alternate_sample_rate = data->alternate_sample_rate;
255 s->alternate_sample_rate = s->core->alternate_sample_rate;
257 if (s->sample_spec.rate == s->alternate_sample_rate) {
258 pa_log_warn("Default and alternate sample rates are the same.");
259 s->alternate_sample_rate = 0;
262 s->outputs = pa_idxset_new(NULL, NULL);
264 s->monitor_of = NULL;
265 s->output_from_master = NULL;
267 s->reference_volume = s->real_volume = data->volume;
268 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
269 s->base_volume = PA_VOLUME_NORM;
270 s->n_volume_steps = PA_VOLUME_NORM+1;
271 s->muted = data->muted;
272 s->refresh_volume = s->refresh_muted = false;
279 /* As a minor optimization we just steal the list instead of
281 s->ports = data->ports;
284 s->active_port = NULL;
285 s->save_port = false;
287 if (data->active_port)
288 if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
289 s->save_port = data->save_port;
291 if (!s->active_port) {
295 PA_HASHMAP_FOREACH(p, s->ports, state) {
296 if (p->available == PA_AVAILABLE_NO)
299 if (!s->active_port || p->priority > s->active_port->priority)
303 if (!s->active_port) {
304 PA_HASHMAP_FOREACH(p, s->ports, state)
305 if (!s->active_port || p->priority > s->active_port->priority)
311 s->latency_offset = s->active_port->latency_offset;
313 s->latency_offset = 0;
315 s->save_volume = data->save_volume;
316 s->save_muted = data->save_muted;
318 pa_silence_memchunk_get(
319 &core->silence_cache,
325 s->thread_info.rtpoll = NULL;
326 s->thread_info.outputs = pa_hashmap_new_full(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func, NULL,
327 (pa_free_cb_t) pa_source_output_unref);
328 s->thread_info.soft_volume = s->soft_volume;
329 s->thread_info.soft_muted = s->muted;
330 s->thread_info.state = s->state;
331 s->thread_info.max_rewind = 0;
332 s->thread_info.requested_latency_valid = false;
333 s->thread_info.requested_latency = 0;
334 s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
335 s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
336 s->thread_info.fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
338 PA_LLIST_HEAD_INIT(pa_source_volume_change, s->thread_info.volume_changes);
339 s->thread_info.volume_changes_tail = NULL;
340 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
341 s->thread_info.volume_change_safety_margin = core->deferred_volume_safety_margin_usec;
342 s->thread_info.volume_change_extra_delay = core->deferred_volume_extra_delay_usec;
343 s->thread_info.latency_offset = s->latency_offset;
345 /* FIXME: This should probably be moved to pa_source_put() */
346 pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
349 pa_assert_se(pa_idxset_put(s->card->sources, s, NULL) >= 0);
351 pt = pa_proplist_to_string_sep(s->proplist, "\n ");
352 pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s\n %s",
355 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
356 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
363 /* Called from main context */
364 static int source_set_state(pa_source *s, pa_source_state_t state) {
367 pa_source_state_t original_state;
370 pa_assert_ctl_context();
372 if (s->state == state)
375 original_state = s->state;
378 (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
379 (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
382 if ((ret = s->set_state(s, state)) < 0)
386 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
389 s->set_state(s, original_state);
396 if (state != PA_SOURCE_UNLINKED) { /* if we enter UNLINKED state pa_source_unlink() will fire the appropriate events */
397 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
398 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
401 if (suspend_change) {
405 /* We're suspending or resuming, tell everyone about it */
407 PA_IDXSET_FOREACH(o, s->outputs, idx)
408 if (s->state == PA_SOURCE_SUSPENDED &&
409 (o->flags & PA_SOURCE_OUTPUT_KILL_ON_SUSPEND))
410 pa_source_output_kill(o);
412 o->suspend(o, state == PA_SOURCE_SUSPENDED);
418 void pa_source_set_get_volume_callback(pa_source *s, pa_source_cb_t cb) {
424 void pa_source_set_set_volume_callback(pa_source *s, pa_source_cb_t cb) {
425 pa_source_flags_t flags;
428 pa_assert(!s->write_volume || cb);
432 /* Save the current flags so we can tell if they've changed */
436 /* The source implementor is responsible for setting decibel volume support */
437 s->flags |= PA_SOURCE_HW_VOLUME_CTRL;
439 s->flags &= ~PA_SOURCE_HW_VOLUME_CTRL;
440 /* See note below in pa_source_put() about volume sharing and decibel volumes */
441 pa_source_enable_decibel_volume(s, !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
444 /* If the flags have changed after init, let any clients know via a change event */
445 if (s->state != PA_SOURCE_INIT && flags != s->flags)
446 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
449 void pa_source_set_write_volume_callback(pa_source *s, pa_source_cb_t cb) {
450 pa_source_flags_t flags;
453 pa_assert(!cb || s->set_volume);
455 s->write_volume = cb;
457 /* Save the current flags so we can tell if they've changed */
461 s->flags |= PA_SOURCE_DEFERRED_VOLUME;
463 s->flags &= ~PA_SOURCE_DEFERRED_VOLUME;
465 /* If the flags have changed after init, let any clients know via a change event */
466 if (s->state != PA_SOURCE_INIT && flags != s->flags)
467 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
470 void pa_source_set_get_mute_callback(pa_source *s, pa_source_cb_t cb) {
476 void pa_source_set_set_mute_callback(pa_source *s, pa_source_cb_t cb) {
477 pa_source_flags_t flags;
483 /* Save the current flags so we can tell if they've changed */
487 s->flags |= PA_SOURCE_HW_MUTE_CTRL;
489 s->flags &= ~PA_SOURCE_HW_MUTE_CTRL;
491 /* If the flags have changed after init, let any clients know via a change event */
492 if (s->state != PA_SOURCE_INIT && flags != s->flags)
493 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
496 static void enable_flat_volume(pa_source *s, bool enable) {
497 pa_source_flags_t flags;
501 /* Always follow the overall user preference here */
502 enable = enable && s->core->flat_volumes;
504 /* Save the current flags so we can tell if they've changed */
508 s->flags |= PA_SOURCE_FLAT_VOLUME;
510 s->flags &= ~PA_SOURCE_FLAT_VOLUME;
512 /* If the flags have changed after init, let any clients know via a change event */
513 if (s->state != PA_SOURCE_INIT && flags != s->flags)
514 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
517 void pa_source_enable_decibel_volume(pa_source *s, bool enable) {
518 pa_source_flags_t flags;
522 /* Save the current flags so we can tell if they've changed */
526 s->flags |= PA_SOURCE_DECIBEL_VOLUME;
527 enable_flat_volume(s, true);
529 s->flags &= ~PA_SOURCE_DECIBEL_VOLUME;
530 enable_flat_volume(s, false);
533 /* If the flags have changed after init, let any clients know via a change event */
534 if (s->state != PA_SOURCE_INIT && flags != s->flags)
535 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
538 /* Called from main context */
539 void pa_source_put(pa_source *s) {
540 pa_source_assert_ref(s);
541 pa_assert_ctl_context();
543 pa_assert(s->state == PA_SOURCE_INIT);
544 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || s->output_from_master);
546 /* The following fields must be initialized properly when calling _put() */
547 pa_assert(s->asyncmsgq);
548 pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
550 /* Generally, flags should be initialized via pa_source_new(). As a
551 * special exception we allow some volume related flags to be set
552 * between _new() and _put() by the callback setter functions above.
554 * Thus we implement a couple safeguards here which ensure the above
555 * setters were used (or at least the implementor made manual changes
556 * in a compatible way).
558 * Note: All of these flags set here can change over the life time
560 pa_assert(!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) || s->set_volume);
561 pa_assert(!(s->flags & PA_SOURCE_DEFERRED_VOLUME) || s->write_volume);
562 pa_assert(!(s->flags & PA_SOURCE_HW_MUTE_CTRL) || s->set_mute);
564 /* XXX: Currently decibel volume is disabled for all sources that use volume
565 * sharing. When the master source supports decibel volume, it would be good
566 * to have the flag also in the filter source, but currently we don't do that
567 * so that the flags of the filter source never change when it's moved from
568 * a master source to another. One solution for this problem would be to
569 * remove user-visible volume altogether from filter sources when volume
570 * sharing is used, but the current approach was easier to implement... */
571 /* We always support decibel volumes in software, otherwise we leave it to
572 * the source implementor to set this flag as needed.
574 * Note: This flag can also change over the life time of the source. */
575 if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
576 pa_source_enable_decibel_volume(s, true);
578 /* If the source implementor support DB volumes by itself, we should always
579 * try and enable flat volumes too */
580 if ((s->flags & PA_SOURCE_DECIBEL_VOLUME))
581 enable_flat_volume(s, true);
583 if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
584 pa_source *root_source = pa_source_get_master(s);
586 pa_assert(PA_LIKELY(root_source));
588 s->reference_volume = root_source->reference_volume;
589 pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
591 s->real_volume = root_source->real_volume;
592 pa_cvolume_remap(&s->real_volume, &root_source->channel_map, &s->channel_map);
594 /* We assume that if the sink implementor changed the default
595 * volume he did so in real_volume, because that is the usual
596 * place where he is supposed to place his changes. */
597 s->reference_volume = s->real_volume;
599 s->thread_info.soft_volume = s->soft_volume;
600 s->thread_info.soft_muted = s->muted;
601 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
603 pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL)
604 || (s->base_volume == PA_VOLUME_NORM
605 && ((s->flags & PA_SOURCE_DECIBEL_VOLUME || (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)))));
606 pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
607 pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == (s->thread_info.fixed_latency != 0));
609 if (s->suspend_cause)
610 pa_assert_se(source_set_state(s, PA_SOURCE_SUSPENDED) == 0);
612 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
614 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
615 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
618 /* Called from main context */
619 void pa_source_unlink(pa_source *s) {
621 pa_source_output *o, *j = NULL;
624 pa_assert_ctl_context();
626 /* See pa_sink_unlink() for a couple of comments how this function
629 linked = PA_SOURCE_IS_LINKED(s->state);
632 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
634 if (s->state != PA_SOURCE_UNLINKED)
635 pa_namereg_unregister(s->core, s->name);
636 pa_idxset_remove_by_data(s->core->sources, s, NULL);
639 pa_idxset_remove_by_data(s->card->sources, s, NULL);
641 while ((o = pa_idxset_first(s->outputs, NULL))) {
643 pa_source_output_kill(o);
648 source_set_state(s, PA_SOURCE_UNLINKED);
650 s->state = PA_SOURCE_UNLINKED;
655 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
656 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
660 /* Called from main context */
661 static void source_free(pa_object *o) {
662 pa_source *s = PA_SOURCE(o);
665 pa_assert_ctl_context();
666 pa_assert(pa_source_refcnt(s) == 0);
668 if (PA_SOURCE_IS_LINKED(s->state))
671 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
673 pa_idxset_free(s->outputs, NULL);
674 pa_hashmap_free(s->thread_info.outputs);
676 if (s->silence.memblock)
677 pa_memblock_unref(s->silence.memblock);
683 pa_proplist_free(s->proplist);
686 pa_hashmap_free(s->ports);
691 /* Called from main context, and not while the IO thread is active, please */
692 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
693 pa_source_assert_ref(s);
694 pa_assert_ctl_context();
699 /* Called from main context, and not while the IO thread is active, please */
700 void pa_source_update_flags(pa_source *s, pa_source_flags_t mask, pa_source_flags_t value) {
701 pa_source_flags_t old_flags;
702 pa_source_output *output;
705 pa_source_assert_ref(s);
706 pa_assert_ctl_context();
708 /* For now, allow only a minimal set of flags to be changed. */
709 pa_assert((mask & ~(PA_SOURCE_DYNAMIC_LATENCY|PA_SOURCE_LATENCY)) == 0);
711 old_flags = s->flags;
712 s->flags = (s->flags & ~mask) | (value & mask);
714 if (s->flags == old_flags)
717 if ((s->flags & PA_SOURCE_LATENCY) != (old_flags & PA_SOURCE_LATENCY))
718 pa_log_debug("Source %s: LATENCY flag %s.", s->name, (s->flags & PA_SOURCE_LATENCY) ? "enabled" : "disabled");
720 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY) != (old_flags & PA_SOURCE_DYNAMIC_LATENCY))
721 pa_log_debug("Source %s: DYNAMIC_LATENCY flag %s.",
722 s->name, (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ? "enabled" : "disabled");
724 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
725 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_FLAGS_CHANGED], s);
727 PA_IDXSET_FOREACH(output, s->outputs, idx) {
728 if (output->destination_source)
729 pa_source_update_flags(output->destination_source, mask, value);
733 /* Called from IO context, or before _put() from main context */
734 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
735 pa_source_assert_ref(s);
736 pa_source_assert_io_context(s);
738 s->thread_info.rtpoll = p;
741 /* Called from main context */
742 int pa_source_update_status(pa_source*s) {
743 pa_source_assert_ref(s);
744 pa_assert_ctl_context();
745 pa_assert(PA_SOURCE_IS_LINKED(s->state));
747 if (s->state == PA_SOURCE_SUSPENDED)
750 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
753 /* Called from any context - must be threadsafe */
754 void pa_source_set_mixer_dirty(pa_source *s, bool is_dirty) {
755 pa_atomic_store(&s->mixer_dirty, is_dirty ? 1 : 0);
758 /* Called from main context */
759 int pa_source_suspend(pa_source *s, bool suspend, pa_suspend_cause_t cause) {
760 pa_source_assert_ref(s);
761 pa_assert_ctl_context();
762 pa_assert(PA_SOURCE_IS_LINKED(s->state));
763 pa_assert(cause != 0);
765 if (s->monitor_of && cause != PA_SUSPEND_PASSTHROUGH)
766 return -PA_ERR_NOTSUPPORTED;
769 s->suspend_cause |= cause;
771 s->suspend_cause &= ~cause;
773 if (!(s->suspend_cause & PA_SUSPEND_SESSION) && (pa_atomic_load(&s->mixer_dirty) != 0)) {
774 /* This might look racy but isn't: If somebody sets mixer_dirty exactly here,
775 it'll be handled just fine. */
776 pa_source_set_mixer_dirty(s, false);
777 pa_log_debug("Mixer is now accessible. Updating alsa mixer settings.");
778 if (s->active_port && s->set_port) {
779 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
780 struct source_message_set_port msg = { .port = s->active_port, .ret = 0 };
781 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
784 s->set_port(s, s->active_port);
794 if ((pa_source_get_state(s) == PA_SOURCE_SUSPENDED) == !!s->suspend_cause)
797 pa_log_debug("Suspend cause of source %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
799 if (s->suspend_cause)
800 return source_set_state(s, PA_SOURCE_SUSPENDED);
802 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
805 /* Called from main context */
806 int pa_source_sync_suspend(pa_source *s) {
807 pa_sink_state_t state;
809 pa_source_assert_ref(s);
810 pa_assert_ctl_context();
811 pa_assert(PA_SOURCE_IS_LINKED(s->state));
812 pa_assert(s->monitor_of);
814 state = pa_sink_get_state(s->monitor_of);
816 if (state == PA_SINK_SUSPENDED)
817 return source_set_state(s, PA_SOURCE_SUSPENDED);
819 pa_assert(PA_SINK_IS_OPENED(state));
821 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
824 /* Called from main context */
825 pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q) {
826 pa_source_output *o, *n;
829 pa_source_assert_ref(s);
830 pa_assert_ctl_context();
831 pa_assert(PA_SOURCE_IS_LINKED(s->state));
836 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = n) {
837 n = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx));
839 pa_source_output_ref(o);
841 if (pa_source_output_start_move(o) >= 0)
844 pa_source_output_unref(o);
850 /* Called from main context */
851 void pa_source_move_all_finish(pa_source *s, pa_queue *q, bool save) {
854 pa_source_assert_ref(s);
855 pa_assert_ctl_context();
856 pa_assert(PA_SOURCE_IS_LINKED(s->state));
859 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
860 if (pa_source_output_finish_move(o, s, save) < 0)
861 pa_source_output_fail_move(o);
863 pa_source_output_unref(o);
866 pa_queue_free(q, NULL);
869 /* Called from main context */
870 void pa_source_move_all_fail(pa_queue *q) {
873 pa_assert_ctl_context();
876 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
877 pa_source_output_fail_move(o);
878 pa_source_output_unref(o);
881 pa_queue_free(q, NULL);
884 /* Called from IO thread context */
885 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
889 pa_source_assert_ref(s);
890 pa_source_assert_io_context(s);
891 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
896 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
899 pa_log_debug("Processing rewind...");
901 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
902 pa_source_output_assert_ref(o);
903 pa_source_output_process_rewind(o, nbytes);
907 /* Called from IO thread context */
908 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
912 pa_source_assert_ref(s);
913 pa_source_assert_io_context(s);
914 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
917 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
920 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
921 pa_memchunk vchunk = *chunk;
923 pa_memblock_ref(vchunk.memblock);
924 pa_memchunk_make_writable(&vchunk, 0);
926 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
927 pa_silence_memchunk(&vchunk, &s->sample_spec);
929 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
931 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
932 pa_source_output_assert_ref(o);
934 if (!o->thread_info.direct_on_input)
935 pa_source_output_push(o, &vchunk);
938 pa_memblock_unref(vchunk.memblock);
941 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
942 pa_source_output_assert_ref(o);
944 if (!o->thread_info.direct_on_input)
945 pa_source_output_push(o, chunk);
950 /* Called from IO thread context */
951 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
952 pa_source_assert_ref(s);
953 pa_source_assert_io_context(s);
954 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
955 pa_source_output_assert_ref(o);
956 pa_assert(o->thread_info.direct_on_input);
959 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
962 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
963 pa_memchunk vchunk = *chunk;
965 pa_memblock_ref(vchunk.memblock);
966 pa_memchunk_make_writable(&vchunk, 0);
968 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
969 pa_silence_memchunk(&vchunk, &s->sample_spec);
971 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
973 pa_source_output_push(o, &vchunk);
975 pa_memblock_unref(vchunk.memblock);
977 pa_source_output_push(o, chunk);
980 /* Called from main thread */
981 int pa_source_update_rate(pa_source *s, uint32_t rate, bool passthrough) {
983 uint32_t desired_rate = rate;
984 uint32_t default_rate = s->default_sample_rate;
985 uint32_t alternate_rate = s->alternate_sample_rate;
986 bool use_alternate = false;
988 if (rate == s->sample_spec.rate)
991 if (!s->update_rate && !s->monitor_of)
994 if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough)) {
995 pa_log_debug("Default and alternate sample rates are the same.");
999 if (PA_SOURCE_IS_RUNNING(s->state)) {
1000 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u Hz",
1001 s->sample_spec.rate);
1005 if (s->monitor_of) {
1006 if (PA_SINK_IS_RUNNING(s->monitor_of->state)) {
1007 pa_log_info("Cannot update rate, this is a monitor source and the sink is running.");
1012 if (PA_UNLIKELY(!pa_sample_rate_valid(desired_rate)))
1016 pa_assert((default_rate % 4000 == 0) || (default_rate % 11025 == 0));
1017 pa_assert((alternate_rate % 4000 == 0) || (alternate_rate % 11025 == 0));
1019 if (default_rate % 11025 == 0) {
1020 if ((alternate_rate % 4000 == 0) && (desired_rate % 4000 == 0))
1023 /* default is 4000 multiple */
1024 if ((alternate_rate % 11025 == 0) && (desired_rate % 11025 == 0))
1029 desired_rate = alternate_rate;
1031 desired_rate = default_rate;
1033 desired_rate = rate; /* use stream sampling rate, discard default/alternate settings */
1036 if (desired_rate == s->sample_spec.rate)
1039 if (!passthrough && pa_source_used_by(s) > 0)
1042 pa_log_debug("Suspending source %s due to changing the sample rate.", s->name);
1043 pa_source_suspend(s, true, PA_SUSPEND_INTERNAL);
1046 ret = s->update_rate(s, desired_rate);
1048 /* This is a monitor source. */
1050 /* XXX: This code is written with non-passthrough streams in mind. I
1051 * have no idea whether the behaviour with passthrough streams is
1054 uint32_t old_rate = s->sample_spec.rate;
1056 s->sample_spec.rate = desired_rate;
1057 ret = pa_sink_update_rate(s->monitor_of, desired_rate, false);
1060 /* Changing the sink rate failed, roll back the old rate for
1061 * the monitor source. Why did we set the source rate before
1062 * calling pa_sink_update_rate(), you may ask. The reason is
1063 * that pa_sink_update_rate() tries to update the monitor
1064 * source rate, but we are already in the process of updating
1065 * the monitor source rate, so there's a risk of entering an
1066 * infinite loop. Setting the source rate before calling
1067 * pa_sink_update_rate() makes the rate == s->sample_spec.rate
1068 * check in the beginning of this function return early, so we
1070 s->sample_spec.rate = old_rate;
1078 pa_source_output *o;
1080 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1081 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1082 pa_source_output_update_rate(o);
1085 pa_log_info("Changed sampling rate successfully");
1088 pa_source_suspend(s, false, PA_SUSPEND_INTERNAL);
1093 /* Called from main thread */
1094 pa_usec_t pa_source_get_latency(pa_source *s) {
1097 pa_source_assert_ref(s);
1098 pa_assert_ctl_context();
1099 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1101 if (s->state == PA_SOURCE_SUSPENDED)
1104 if (!(s->flags & PA_SOURCE_LATENCY))
1107 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1109 /* usec is unsigned, so check that the offset can be added to usec without
1111 if (-s->latency_offset <= (int64_t) usec)
1112 usec += s->latency_offset;
1119 /* Called from IO thread */
1120 pa_usec_t pa_source_get_latency_within_thread(pa_source *s) {
1124 pa_source_assert_ref(s);
1125 pa_source_assert_io_context(s);
1126 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1128 /* The returned value is supposed to be in the time domain of the sound card! */
1130 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1133 if (!(s->flags & PA_SOURCE_LATENCY))
1136 o = PA_MSGOBJECT(s);
1138 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1140 if (o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1143 /* usec is unsigned, so check that the offset can be added to usec without
1145 if (-s->thread_info.latency_offset <= (int64_t) usec)
1146 usec += s->thread_info.latency_offset;
1153 /* Called from the main thread (and also from the IO thread while the main
1154 * thread is waiting).
1156 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1157 * set. Instead, flat volume mode is detected by checking whether the root source
1158 * has the flag set. */
1159 bool pa_source_flat_volume_enabled(pa_source *s) {
1160 pa_source_assert_ref(s);
1162 s = pa_source_get_master(s);
1165 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1170 /* Called from the main thread (and also from the IO thread while the main
1171 * thread is waiting). */
1172 pa_source *pa_source_get_master(pa_source *s) {
1173 pa_source_assert_ref(s);
1175 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1176 if (PA_UNLIKELY(!s->output_from_master))
1179 s = s->output_from_master->source;
1185 /* Called from main context */
1186 bool pa_source_is_passthrough(pa_source *s) {
1188 pa_source_assert_ref(s);
1190 /* NB Currently only monitor sources support passthrough mode */
1191 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1194 /* Called from main context */
1195 void pa_source_enter_passthrough(pa_source *s) {
1198 /* set the volume to NORM */
1199 s->saved_volume = *pa_source_get_volume(s, true);
1200 s->saved_save_volume = s->save_volume;
1202 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1203 pa_source_set_volume(s, &volume, true, false);
1206 /* Called from main context */
1207 void pa_source_leave_passthrough(pa_source *s) {
1208 /* Restore source volume to what it was before we entered passthrough mode */
1209 pa_source_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
1211 pa_cvolume_init(&s->saved_volume);
1212 s->saved_save_volume = false;
1215 /* Called from main context. */
1216 static void compute_reference_ratio(pa_source_output *o) {
1218 pa_cvolume remapped;
1221 pa_assert(pa_source_flat_volume_enabled(o->source));
1224 * Calculates the reference ratio from the source's reference
1225 * volume. This basically calculates:
1227 * o->reference_ratio = o->volume / o->source->reference_volume
1230 remapped = o->source->reference_volume;
1231 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1233 o->reference_ratio.channels = o->sample_spec.channels;
1235 for (c = 0; c < o->sample_spec.channels; c++) {
1237 /* We don't update when the source volume is 0 anyway */
1238 if (remapped.values[c] <= PA_VOLUME_MUTED)
1241 /* Don't update the reference ratio unless necessary */
1242 if (pa_sw_volume_multiply(
1243 o->reference_ratio.values[c],
1244 remapped.values[c]) == o->volume.values[c])
1247 o->reference_ratio.values[c] = pa_sw_volume_divide(
1248 o->volume.values[c],
1249 remapped.values[c]);
1253 /* Called from main context. Only called for the root source in volume sharing
1254 * cases, except for internal recursive calls. */
1255 static void compute_reference_ratios(pa_source *s) {
1257 pa_source_output *o;
1259 pa_source_assert_ref(s);
1260 pa_assert_ctl_context();
1261 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1262 pa_assert(pa_source_flat_volume_enabled(s));
1264 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1265 compute_reference_ratio(o);
1267 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1268 compute_reference_ratios(o->destination_source);
1272 /* Called from main context. Only called for the root source in volume sharing
1273 * cases, except for internal recursive calls. */
1274 static void compute_real_ratios(pa_source *s) {
1275 pa_source_output *o;
1278 pa_source_assert_ref(s);
1279 pa_assert_ctl_context();
1280 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1281 pa_assert(pa_source_flat_volume_enabled(s));
1283 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1285 pa_cvolume remapped;
1287 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1288 /* The origin source uses volume sharing, so this input's real ratio
1289 * is handled as a special case - the real ratio must be 0 dB, and
1290 * as a result i->soft_volume must equal i->volume_factor. */
1291 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1292 o->soft_volume = o->volume_factor;
1294 compute_real_ratios(o->destination_source);
1300 * This basically calculates:
1302 * i->real_ratio := i->volume / s->real_volume
1303 * i->soft_volume := i->real_ratio * i->volume_factor
1306 remapped = s->real_volume;
1307 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1309 o->real_ratio.channels = o->sample_spec.channels;
1310 o->soft_volume.channels = o->sample_spec.channels;
1312 for (c = 0; c < o->sample_spec.channels; c++) {
1314 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1315 /* We leave o->real_ratio untouched */
1316 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1320 /* Don't lose accuracy unless necessary */
1321 if (pa_sw_volume_multiply(
1322 o->real_ratio.values[c],
1323 remapped.values[c]) != o->volume.values[c])
1325 o->real_ratio.values[c] = pa_sw_volume_divide(
1326 o->volume.values[c],
1327 remapped.values[c]);
1329 o->soft_volume.values[c] = pa_sw_volume_multiply(
1330 o->real_ratio.values[c],
1331 o->volume_factor.values[c]);
1334 /* We don't copy the soft_volume to the thread_info data
1335 * here. That must be done by the caller */
1339 static pa_cvolume *cvolume_remap_minimal_impact(
1341 const pa_cvolume *template,
1342 const pa_channel_map *from,
1343 const pa_channel_map *to) {
1348 pa_assert(template);
1351 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1352 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1354 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1355 * mapping from source output to source volumes:
1357 * If template is a possible remapping from v it is used instead
1358 * of remapping anew.
1360 * If the channel maps don't match we set an all-channel volume on
1361 * the source to ensure that changing a volume on one stream has no
1362 * effect that cannot be compensated for in another stream that
1363 * does not have the same channel map as the source. */
1365 if (pa_channel_map_equal(from, to))
1369 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1374 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1378 /* Called from main thread. Only called for the root source in volume sharing
1379 * cases, except for internal recursive calls. */
1380 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1381 pa_source_output *o;
1384 pa_source_assert_ref(s);
1385 pa_assert(max_volume);
1386 pa_assert(channel_map);
1387 pa_assert(pa_source_flat_volume_enabled(s));
1389 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1390 pa_cvolume remapped;
1392 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1393 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1395 /* Ignore this output. The origin source uses volume sharing, so this
1396 * output's volume will be set to be equal to the root source's real
1397 * volume. Obviously this output's current volume must not then
1398 * affect what the root source's real volume will be. */
1402 remapped = o->volume;
1403 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1404 pa_cvolume_merge(max_volume, max_volume, &remapped);
1408 /* Called from main thread. Only called for the root source in volume sharing
1409 * cases, except for internal recursive calls. */
1410 static bool has_outputs(pa_source *s) {
1411 pa_source_output *o;
1414 pa_source_assert_ref(s);
1416 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1417 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1424 /* Called from main thread. Only called for the root source in volume sharing
1425 * cases, except for internal recursive calls. */
1426 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1427 pa_source_output *o;
1430 pa_source_assert_ref(s);
1431 pa_assert(new_volume);
1432 pa_assert(channel_map);
1434 s->real_volume = *new_volume;
1435 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1437 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1438 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1439 if (pa_source_flat_volume_enabled(s)) {
1440 pa_cvolume old_volume = o->volume;
1442 /* Follow the root source's real volume. */
1443 o->volume = *new_volume;
1444 pa_cvolume_remap(&o->volume, channel_map, &o->channel_map);
1445 compute_reference_ratio(o);
1447 /* The volume changed, let's tell people so */
1448 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1449 if (o->volume_changed)
1450 o->volume_changed(o);
1452 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1456 update_real_volume(o->destination_source, new_volume, channel_map);
1461 /* Called from main thread. Only called for the root source in shared volume
1463 static void compute_real_volume(pa_source *s) {
1464 pa_source_assert_ref(s);
1465 pa_assert_ctl_context();
1466 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1467 pa_assert(pa_source_flat_volume_enabled(s));
1468 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1470 /* This determines the maximum volume of all streams and sets
1471 * s->real_volume accordingly. */
1473 if (!has_outputs(s)) {
1474 /* In the special case that we have no source outputs we leave the
1475 * volume unmodified. */
1476 update_real_volume(s, &s->reference_volume, &s->channel_map);
1480 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1482 /* First let's determine the new maximum volume of all outputs
1483 * connected to this source */
1484 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1485 update_real_volume(s, &s->real_volume, &s->channel_map);
1487 /* Then, let's update the real ratios/soft volumes of all outputs
1488 * connected to this source */
1489 compute_real_ratios(s);
1492 /* Called from main thread. Only called for the root source in shared volume
1493 * cases, except for internal recursive calls. */
1494 static void propagate_reference_volume(pa_source *s) {
1495 pa_source_output *o;
1498 pa_source_assert_ref(s);
1499 pa_assert_ctl_context();
1500 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1501 pa_assert(pa_source_flat_volume_enabled(s));
1503 /* This is called whenever the source volume changes that is not
1504 * caused by a source output volume change. We need to fix up the
1505 * source output volumes accordingly */
1507 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1508 pa_cvolume old_volume;
1510 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1511 propagate_reference_volume(o->destination_source);
1513 /* Since the origin source uses volume sharing, this output's volume
1514 * needs to be updated to match the root source's real volume, but
1515 * that will be done later in update_shared_real_volume(). */
1519 old_volume = o->volume;
1521 /* This basically calculates:
1523 * o->volume := o->reference_volume * o->reference_ratio */
1525 o->volume = s->reference_volume;
1526 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1527 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1529 /* The volume changed, let's tell people so */
1530 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1532 if (o->volume_changed)
1533 o->volume_changed(o);
1535 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1540 /* Called from main thread. Only called for the root source in volume sharing
1541 * cases, except for internal recursive calls. The return value indicates
1542 * whether any reference volume actually changed. */
1543 static bool update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
1545 bool reference_volume_changed;
1546 pa_source_output *o;
1549 pa_source_assert_ref(s);
1550 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1552 pa_assert(channel_map);
1553 pa_assert(pa_cvolume_valid(v));
1556 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1558 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1559 s->reference_volume = volume;
1561 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1563 if (reference_volume_changed)
1564 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1565 else if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1566 /* If the root source's volume doesn't change, then there can't be any
1567 * changes in the other source in the source tree either.
1569 * It's probably theoretically possible that even if the root source's
1570 * volume changes slightly, some filter source doesn't change its volume
1571 * due to rounding errors. If that happens, we still want to propagate
1572 * the changed root source volume to the sources connected to the
1573 * intermediate source that didn't change its volume. This theoretical
1574 * possibility is the reason why we have that !(s->flags &
1575 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1576 * notice even if we returned here false always if
1577 * reference_volume_changed is false. */
1580 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1581 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1582 update_reference_volume(o->destination_source, v, channel_map, false);
1588 /* Called from main thread */
1589 void pa_source_set_volume(
1591 const pa_cvolume *volume,
1595 pa_cvolume new_reference_volume;
1596 pa_source *root_source;
1598 pa_source_assert_ref(s);
1599 pa_assert_ctl_context();
1600 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1601 pa_assert(!volume || pa_cvolume_valid(volume));
1602 pa_assert(volume || pa_source_flat_volume_enabled(s));
1603 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1605 /* make sure we don't change the volume in PASSTHROUGH mode ...
1606 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1607 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1608 pa_log_warn("Cannot change volume, source is monitor of a PASSTHROUGH sink");
1612 /* In case of volume sharing, the volume is set for the root source first,
1613 * from which it's then propagated to the sharing sources. */
1614 root_source = pa_source_get_master(s);
1616 if (PA_UNLIKELY(!root_source))
1619 /* As a special exception we accept mono volumes on all sources --
1620 * even on those with more complex channel maps */
1623 if (pa_cvolume_compatible(volume, &s->sample_spec))
1624 new_reference_volume = *volume;
1626 new_reference_volume = s->reference_volume;
1627 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1630 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1632 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1633 if (pa_source_flat_volume_enabled(root_source)) {
1634 /* OK, propagate this volume change back to the outputs */
1635 propagate_reference_volume(root_source);
1637 /* And now recalculate the real volume */
1638 compute_real_volume(root_source);
1640 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1644 /* If volume is NULL we synchronize the source's real and
1645 * reference volumes with the stream volumes. */
1647 pa_assert(pa_source_flat_volume_enabled(root_source));
1649 /* Ok, let's determine the new real volume */
1650 compute_real_volume(root_source);
1652 /* Let's 'push' the reference volume if necessary */
1653 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_source->real_volume);
1654 /* If the source and its root don't have the same number of channels, we need to remap */
1655 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1656 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1657 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1659 /* Now that the reference volume is updated, we can update the streams'
1660 * reference ratios. */
1661 compute_reference_ratios(root_source);
1664 if (root_source->set_volume) {
1665 /* If we have a function set_volume(), then we do not apply a
1666 * soft volume by default. However, set_volume() is free to
1667 * apply one to root_source->soft_volume */
1669 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1670 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1671 root_source->set_volume(root_source);
1674 /* If we have no function set_volume(), then the soft volume
1675 * becomes the real volume */
1676 root_source->soft_volume = root_source->real_volume;
1678 /* This tells the source that soft volume and/or real volume changed */
1680 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1683 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1684 * Only to be called by source implementor */
1685 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1687 pa_source_assert_ref(s);
1688 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1690 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1691 pa_source_assert_io_context(s);
1693 pa_assert_ctl_context();
1696 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1698 s->soft_volume = *volume;
1700 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1701 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1703 s->thread_info.soft_volume = s->soft_volume;
1706 /* Called from the main thread. Only called for the root source in volume sharing
1707 * cases, except for internal recursive calls. */
1708 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1709 pa_source_output *o;
1712 pa_source_assert_ref(s);
1713 pa_assert(old_real_volume);
1714 pa_assert_ctl_context();
1715 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1717 /* This is called when the hardware's real volume changes due to
1718 * some external event. We copy the real volume into our
1719 * reference volume and then rebuild the stream volumes based on
1720 * i->real_ratio which should stay fixed. */
1722 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1723 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1726 /* 1. Make the real volume the reference volume */
1727 update_reference_volume(s, &s->real_volume, &s->channel_map, true);
1730 if (pa_source_flat_volume_enabled(s)) {
1732 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1733 pa_cvolume old_volume = o->volume;
1735 /* 2. Since the source's reference and real volumes are equal
1736 * now our ratios should be too. */
1737 o->reference_ratio = o->real_ratio;
1739 /* 3. Recalculate the new stream reference volume based on the
1740 * reference ratio and the sink's reference volume.
1742 * This basically calculates:
1744 * o->volume = s->reference_volume * o->reference_ratio
1746 * This is identical to propagate_reference_volume() */
1747 o->volume = s->reference_volume;
1748 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1749 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1751 /* Notify if something changed */
1752 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1754 if (o->volume_changed)
1755 o->volume_changed(o);
1757 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1760 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1761 propagate_real_volume(o->destination_source, old_real_volume);
1765 /* Something got changed in the hardware. It probably makes sense
1766 * to save changed hw settings given that hw volume changes not
1767 * triggered by PA are almost certainly done by the user. */
1768 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1769 s->save_volume = true;
1772 /* Called from io thread */
1773 void pa_source_update_volume_and_mute(pa_source *s) {
1775 pa_source_assert_io_context(s);
1777 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1780 /* Called from main thread */
1781 const pa_cvolume *pa_source_get_volume(pa_source *s, bool force_refresh) {
1782 pa_source_assert_ref(s);
1783 pa_assert_ctl_context();
1784 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1786 if (s->refresh_volume || force_refresh) {
1787 struct pa_cvolume old_real_volume;
1789 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1791 old_real_volume = s->real_volume;
1793 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1796 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1798 update_real_volume(s, &s->real_volume, &s->channel_map);
1799 propagate_real_volume(s, &old_real_volume);
1802 return &s->reference_volume;
1805 /* Called from main thread. In volume sharing cases, only the root source may
1807 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1808 pa_cvolume old_real_volume;
1810 pa_source_assert_ref(s);
1811 pa_assert_ctl_context();
1812 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1813 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1815 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1817 old_real_volume = s->real_volume;
1818 update_real_volume(s, new_real_volume, &s->channel_map);
1819 propagate_real_volume(s, &old_real_volume);
1822 /* Called from main thread */
1823 void pa_source_set_mute(pa_source *s, bool mute, bool save) {
1826 pa_source_assert_ref(s);
1827 pa_assert_ctl_context();
1828 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1830 old_muted = s->muted;
1832 s->save_muted = (old_muted == s->muted && s->save_muted) || save;
1834 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute)
1837 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1839 if (old_muted != s->muted)
1840 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1843 /* Called from main thread */
1844 bool pa_source_get_mute(pa_source *s, bool force_refresh) {
1846 pa_source_assert_ref(s);
1847 pa_assert_ctl_context();
1848 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1850 if (s->refresh_muted || force_refresh) {
1851 bool old_muted = s->muted;
1853 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_mute)
1856 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, NULL, 0, NULL) == 0);
1858 if (old_muted != s->muted) {
1859 s->save_muted = true;
1861 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1863 /* Make sure the soft mute status stays in sync */
1864 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1871 /* Called from main thread */
1872 void pa_source_mute_changed(pa_source *s, bool new_muted) {
1873 pa_source_assert_ref(s);
1874 pa_assert_ctl_context();
1875 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1877 /* The source implementor may call this if the mute state changed to make sure everyone is notified */
1879 if (s->muted == new_muted)
1882 s->muted = new_muted;
1883 s->save_muted = true;
1885 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1888 /* Called from main thread */
1889 bool pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1890 pa_source_assert_ref(s);
1891 pa_assert_ctl_context();
1894 pa_proplist_update(s->proplist, mode, p);
1896 if (PA_SOURCE_IS_LINKED(s->state)) {
1897 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1898 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1904 /* Called from main thread */
1905 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1906 void pa_source_set_description(pa_source *s, const char *description) {
1908 pa_source_assert_ref(s);
1909 pa_assert_ctl_context();
1911 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1914 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1916 if (old && description && pa_streq(old, description))
1920 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1922 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1924 if (PA_SOURCE_IS_LINKED(s->state)) {
1925 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1926 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1930 /* Called from main thread */
1931 unsigned pa_source_linked_by(pa_source *s) {
1932 pa_source_assert_ref(s);
1933 pa_assert_ctl_context();
1934 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1936 return pa_idxset_size(s->outputs);
1939 /* Called from main thread */
1940 unsigned pa_source_used_by(pa_source *s) {
1943 pa_source_assert_ref(s);
1944 pa_assert_ctl_context();
1945 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1947 ret = pa_idxset_size(s->outputs);
1948 pa_assert(ret >= s->n_corked);
1950 return ret - s->n_corked;
1953 /* Called from main thread */
1954 unsigned pa_source_check_suspend(pa_source *s) {
1956 pa_source_output *o;
1959 pa_source_assert_ref(s);
1960 pa_assert_ctl_context();
1962 if (!PA_SOURCE_IS_LINKED(s->state))
1967 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1968 pa_source_output_state_t st;
1970 st = pa_source_output_get_state(o);
1972 /* We do not assert here. It is perfectly valid for a source output to
1973 * be in the INIT state (i.e. created, marked done but not yet put)
1974 * and we should not care if it's unlinked as it won't contribute
1975 * towards our busy status.
1977 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1980 if (st == PA_SOURCE_OUTPUT_CORKED)
1983 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
1992 /* Called from the IO thread */
1993 static void sync_output_volumes_within_thread(pa_source *s) {
1994 pa_source_output *o;
1997 pa_source_assert_ref(s);
1998 pa_source_assert_io_context(s);
2000 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
2001 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
2004 o->thread_info.soft_volume = o->soft_volume;
2005 //pa_source_output_request_rewind(o, 0, true, false, false);
2009 /* Called from the IO thread. Only called for the root source in volume sharing
2010 * cases, except for internal recursive calls. */
2011 static void set_shared_volume_within_thread(pa_source *s) {
2012 pa_source_output *o;
2015 pa_source_assert_ref(s);
2017 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
2019 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
2020 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
2021 set_shared_volume_within_thread(o->destination_source);
2025 /* Called from IO thread, except when it is not */
2026 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
2027 pa_source *s = PA_SOURCE(object);
2028 pa_source_assert_ref(s);
2030 switch ((pa_source_message_t) code) {
2032 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
2033 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2035 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
2037 if (o->direct_on_input) {
2038 o->thread_info.direct_on_input = o->direct_on_input;
2039 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
2042 pa_assert(!o->thread_info.attached);
2043 o->thread_info.attached = true;
2048 pa_source_output_set_state_within_thread(o, o->state);
2050 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
2051 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2053 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2055 /* We don't just invalidate the requested latency here,
2056 * because if we are in a move we might need to fix up the
2057 * requested latency. */
2058 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2060 /* In flat volume mode we need to update the volume as
2062 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2065 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
2066 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2068 pa_source_output_set_state_within_thread(o, o->state);
2073 pa_assert(o->thread_info.attached);
2074 o->thread_info.attached = false;
2076 if (o->thread_info.direct_on_input) {
2077 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
2078 o->thread_info.direct_on_input = NULL;
2081 if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
2082 pa_source_output_unref(o);
2084 pa_source_invalidate_requested_latency(s, true);
2086 /* In flat volume mode we need to update the volume as
2088 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2091 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
2092 pa_source *root_source = pa_source_get_master(s);
2094 if (PA_LIKELY(root_source))
2095 set_shared_volume_within_thread(root_source);
2100 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
2102 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2104 pa_source_volume_change_push(s);
2106 /* Fall through ... */
2108 case PA_SOURCE_MESSAGE_SET_VOLUME:
2110 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2111 s->thread_info.soft_volume = s->soft_volume;
2114 /* Fall through ... */
2116 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
2117 sync_output_volumes_within_thread(s);
2120 case PA_SOURCE_MESSAGE_GET_VOLUME:
2122 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
2124 pa_source_volume_change_flush(s);
2125 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2128 /* In case source implementor reset SW volume. */
2129 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2130 s->thread_info.soft_volume = s->soft_volume;
2135 case PA_SOURCE_MESSAGE_SET_MUTE:
2137 if (s->thread_info.soft_muted != s->muted) {
2138 s->thread_info.soft_muted = s->muted;
2141 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2146 case PA_SOURCE_MESSAGE_GET_MUTE:
2148 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2153 case PA_SOURCE_MESSAGE_SET_STATE: {
2155 bool suspend_change =
2156 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2157 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
2159 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2161 if (suspend_change) {
2162 pa_source_output *o;
2165 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2166 if (o->suspend_within_thread)
2167 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2173 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2175 pa_usec_t *usec = userdata;
2176 *usec = pa_source_get_requested_latency_within_thread(s);
2178 /* Yes, that's right, the IO thread will see -1 when no
2179 * explicit requested latency is configured, the main
2180 * thread will see max_latency */
2181 if (*usec == (pa_usec_t) -1)
2182 *usec = s->thread_info.max_latency;
2187 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2188 pa_usec_t *r = userdata;
2190 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2195 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2196 pa_usec_t *r = userdata;
2198 r[0] = s->thread_info.min_latency;
2199 r[1] = s->thread_info.max_latency;
2204 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2206 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2209 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2211 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2214 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2216 *((size_t*) userdata) = s->thread_info.max_rewind;
2219 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2221 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2224 case PA_SOURCE_MESSAGE_GET_LATENCY:
2226 if (s->monitor_of) {
2227 *((pa_usec_t*) userdata) = 0;
2231 /* Implementors need to overwrite this implementation! */
2234 case PA_SOURCE_MESSAGE_SET_PORT:
2236 pa_assert(userdata);
2238 struct source_message_set_port *msg_data = userdata;
2239 msg_data->ret = s->set_port(s, msg_data->port);
2243 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2244 /* This message is sent from IO-thread and handled in main thread. */
2245 pa_assert_ctl_context();
2247 /* Make sure we're not messing with main thread when no longer linked */
2248 if (!PA_SOURCE_IS_LINKED(s->state))
2251 pa_source_get_volume(s, true);
2252 pa_source_get_mute(s, true);
2255 case PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET:
2256 s->thread_info.latency_offset = offset;
2259 case PA_SOURCE_MESSAGE_MAX:
2266 /* Called from main thread */
2267 int pa_source_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
2272 pa_core_assert_ref(c);
2273 pa_assert_ctl_context();
2274 pa_assert(cause != 0);
2276 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2279 if (source->monitor_of)
2282 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2289 /* Called from IO thread */
2290 void pa_source_detach_within_thread(pa_source *s) {
2291 pa_source_output *o;
2294 pa_source_assert_ref(s);
2295 pa_source_assert_io_context(s);
2296 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2298 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2303 /* Called from IO thread */
2304 void pa_source_attach_within_thread(pa_source *s) {
2305 pa_source_output *o;
2308 pa_source_assert_ref(s);
2309 pa_source_assert_io_context(s);
2310 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2312 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2317 /* Called from IO thread */
2318 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2319 pa_usec_t result = (pa_usec_t) -1;
2320 pa_source_output *o;
2323 pa_source_assert_ref(s);
2324 pa_source_assert_io_context(s);
2326 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2327 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2329 if (s->thread_info.requested_latency_valid)
2330 return s->thread_info.requested_latency;
2332 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2333 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2334 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2335 result = o->thread_info.requested_source_latency;
2337 if (result != (pa_usec_t) -1)
2338 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2340 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2341 /* Only cache this if we are fully set up */
2342 s->thread_info.requested_latency = result;
2343 s->thread_info.requested_latency_valid = true;
2349 /* Called from main thread */
2350 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2353 pa_source_assert_ref(s);
2354 pa_assert_ctl_context();
2355 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2357 if (s->state == PA_SOURCE_SUSPENDED)
2360 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2365 /* Called from IO thread */
2366 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2367 pa_source_output *o;
2370 pa_source_assert_ref(s);
2371 pa_source_assert_io_context(s);
2373 if (max_rewind == s->thread_info.max_rewind)
2376 s->thread_info.max_rewind = max_rewind;
2378 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2379 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2380 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2383 /* Called from main thread */
2384 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2385 pa_source_assert_ref(s);
2386 pa_assert_ctl_context();
2388 if (PA_SOURCE_IS_LINKED(s->state))
2389 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2391 pa_source_set_max_rewind_within_thread(s, max_rewind);
2394 /* Called from IO thread */
2395 void pa_source_invalidate_requested_latency(pa_source *s, bool dynamic) {
2396 pa_source_output *o;
2399 pa_source_assert_ref(s);
2400 pa_source_assert_io_context(s);
2402 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2403 s->thread_info.requested_latency_valid = false;
2407 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2409 if (s->update_requested_latency)
2410 s->update_requested_latency(s);
2412 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2413 if (o->update_source_requested_latency)
2414 o->update_source_requested_latency(o);
2418 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2421 /* Called from main thread */
2422 void pa_source_set_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();
2426 /* min_latency == 0: no limit
2427 * min_latency anything else: specified limit
2429 * Similar for max_latency */
2431 if (min_latency < ABSOLUTE_MIN_LATENCY)
2432 min_latency = ABSOLUTE_MIN_LATENCY;
2434 if (max_latency <= 0 ||
2435 max_latency > ABSOLUTE_MAX_LATENCY)
2436 max_latency = ABSOLUTE_MAX_LATENCY;
2438 pa_assert(min_latency <= max_latency);
2440 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2441 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2442 max_latency == ABSOLUTE_MAX_LATENCY) ||
2443 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2445 if (PA_SOURCE_IS_LINKED(s->state)) {
2451 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2453 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2456 /* Called from main thread */
2457 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2458 pa_source_assert_ref(s);
2459 pa_assert_ctl_context();
2460 pa_assert(min_latency);
2461 pa_assert(max_latency);
2463 if (PA_SOURCE_IS_LINKED(s->state)) {
2464 pa_usec_t r[2] = { 0, 0 };
2466 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2468 *min_latency = r[0];
2469 *max_latency = r[1];
2471 *min_latency = s->thread_info.min_latency;
2472 *max_latency = s->thread_info.max_latency;
2476 /* Called from IO thread, and from main thread before pa_source_put() is called */
2477 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2478 pa_source_assert_ref(s);
2479 pa_source_assert_io_context(s);
2481 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2482 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2483 pa_assert(min_latency <= max_latency);
2485 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2486 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2487 max_latency == ABSOLUTE_MAX_LATENCY) ||
2488 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2491 if (s->thread_info.min_latency == min_latency &&
2492 s->thread_info.max_latency == max_latency)
2495 s->thread_info.min_latency = min_latency;
2496 s->thread_info.max_latency = max_latency;
2498 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2499 pa_source_output *o;
2502 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2503 if (o->update_source_latency_range)
2504 o->update_source_latency_range(o);
2507 pa_source_invalidate_requested_latency(s, false);
2510 /* Called from main thread, before the source is put */
2511 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2512 pa_source_assert_ref(s);
2513 pa_assert_ctl_context();
2515 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2516 pa_assert(latency == 0);
2520 if (latency < ABSOLUTE_MIN_LATENCY)
2521 latency = ABSOLUTE_MIN_LATENCY;
2523 if (latency > ABSOLUTE_MAX_LATENCY)
2524 latency = ABSOLUTE_MAX_LATENCY;
2526 if (PA_SOURCE_IS_LINKED(s->state))
2527 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2529 s->thread_info.fixed_latency = latency;
2532 /* Called from main thread */
2533 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2536 pa_source_assert_ref(s);
2537 pa_assert_ctl_context();
2539 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2542 if (PA_SOURCE_IS_LINKED(s->state))
2543 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2545 latency = s->thread_info.fixed_latency;
2550 /* Called from IO thread */
2551 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2552 pa_source_assert_ref(s);
2553 pa_source_assert_io_context(s);
2555 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2556 pa_assert(latency == 0);
2557 s->thread_info.fixed_latency = 0;
2562 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2563 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2565 if (s->thread_info.fixed_latency == latency)
2568 s->thread_info.fixed_latency = latency;
2570 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2571 pa_source_output *o;
2574 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2575 if (o->update_source_fixed_latency)
2576 o->update_source_fixed_latency(o);
2579 pa_source_invalidate_requested_latency(s, false);
2582 /* Called from main thread */
2583 void pa_source_set_latency_offset(pa_source *s, int64_t offset) {
2584 pa_source_assert_ref(s);
2586 s->latency_offset = offset;
2588 if (PA_SOURCE_IS_LINKED(s->state))
2589 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET, NULL, offset, NULL) == 0);
2591 s->thread_info.latency_offset = offset;
2594 /* Called from main thread */
2595 size_t pa_source_get_max_rewind(pa_source *s) {
2597 pa_assert_ctl_context();
2598 pa_source_assert_ref(s);
2600 if (!PA_SOURCE_IS_LINKED(s->state))
2601 return s->thread_info.max_rewind;
2603 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2608 /* Called from main context */
2609 int pa_source_set_port(pa_source *s, const char *name, bool save) {
2610 pa_device_port *port;
2613 pa_source_assert_ref(s);
2614 pa_assert_ctl_context();
2617 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2618 return -PA_ERR_NOTIMPLEMENTED;
2622 return -PA_ERR_NOENTITY;
2624 if (!(port = pa_hashmap_get(s->ports, name)))
2625 return -PA_ERR_NOENTITY;
2627 if (s->active_port == port) {
2628 s->save_port = s->save_port || save;
2632 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2633 struct source_message_set_port msg = { .port = port, .ret = 0 };
2634 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2638 ret = s->set_port(s, port);
2641 return -PA_ERR_NOENTITY;
2643 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2645 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2647 s->active_port = port;
2648 s->save_port = save;
2650 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2655 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2657 /* Called from the IO thread. */
2658 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2659 pa_source_volume_change *c;
2660 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2661 c = pa_xnew(pa_source_volume_change, 1);
2663 PA_LLIST_INIT(pa_source_volume_change, c);
2665 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2669 /* Called from the IO thread. */
2670 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2672 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2676 /* Called from the IO thread. */
2677 void pa_source_volume_change_push(pa_source *s) {
2678 pa_source_volume_change *c = NULL;
2679 pa_source_volume_change *nc = NULL;
2680 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2682 const char *direction = NULL;
2685 nc = pa_source_volume_change_new(s);
2687 /* NOTE: There is already more different volumes in pa_source that I can remember.
2688 * Adding one more volume for HW would get us rid of this, but I am trying
2689 * to survive with the ones we already have. */
2690 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2692 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2693 pa_log_debug("Volume not changing");
2694 pa_source_volume_change_free(nc);
2698 nc->at = pa_source_get_latency_within_thread(s);
2699 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2701 if (s->thread_info.volume_changes_tail) {
2702 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2703 /* If volume is going up let's do it a bit late. If it is going
2704 * down let's do it a bit early. */
2705 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2706 if (nc->at + safety_margin > c->at) {
2707 nc->at += safety_margin;
2712 else if (nc->at - safety_margin > c->at) {
2713 nc->at -= safety_margin;
2721 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2722 nc->at += safety_margin;
2725 nc->at -= safety_margin;
2728 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2731 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2734 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2736 /* We can ignore volume events that came earlier but should happen later than this. */
2737 PA_LLIST_FOREACH(c, nc->next) {
2738 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2739 pa_source_volume_change_free(c);
2742 s->thread_info.volume_changes_tail = nc;
2745 /* Called from the IO thread. */
2746 static void pa_source_volume_change_flush(pa_source *s) {
2747 pa_source_volume_change *c = s->thread_info.volume_changes;
2749 s->thread_info.volume_changes = NULL;
2750 s->thread_info.volume_changes_tail = NULL;
2752 pa_source_volume_change *next = c->next;
2753 pa_source_volume_change_free(c);
2758 /* Called from the IO thread. */
2759 bool pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2765 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2771 pa_assert(s->write_volume);
2773 now = pa_rtclock_now();
2775 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2776 pa_source_volume_change *c = s->thread_info.volume_changes;
2777 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2778 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2779 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2781 s->thread_info.current_hw_volume = c->hw_volume;
2782 pa_source_volume_change_free(c);
2788 if (s->thread_info.volume_changes) {
2790 *usec_to_next = s->thread_info.volume_changes->at - now;
2791 if (pa_log_ratelimit(PA_LOG_DEBUG))
2792 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2797 s->thread_info.volume_changes_tail = NULL;
2802 /* Called from the main thread */
2803 /* Gets the list of formats supported by the source. The members and idxset must
2804 * be freed by the caller. */
2805 pa_idxset* pa_source_get_formats(pa_source *s) {
2810 if (s->get_formats) {
2811 /* Source supports format query, all is good */
2812 ret = s->get_formats(s);
2814 /* Source doesn't support format query, so assume it does PCM */
2815 pa_format_info *f = pa_format_info_new();
2816 f->encoding = PA_ENCODING_PCM;
2818 ret = pa_idxset_new(NULL, NULL);
2819 pa_idxset_put(ret, f, NULL);
2825 /* Called from the main thread */
2826 /* Checks if the source can accept this format */
2827 bool pa_source_check_format(pa_source *s, pa_format_info *f) {
2828 pa_idxset *formats = NULL;
2834 formats = pa_source_get_formats(s);
2837 pa_format_info *finfo_device;
2840 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2841 if (pa_format_info_is_compatible(finfo_device, f)) {
2847 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
2853 /* Called from the main thread */
2854 /* Calculates the intersection between formats supported by the source and
2855 * in_formats, and returns these, in the order of the source's formats. */
2856 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2857 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2858 pa_format_info *f_source, *f_in;
2863 if (!in_formats || pa_idxset_isempty(in_formats))
2866 source_formats = pa_source_get_formats(s);
2868 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2869 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2870 if (pa_format_info_is_compatible(f_source, f_in))
2871 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2877 pa_idxset_free(source_formats, (pa_free_cb_t) pa_format_info_free);