2 This file is part of PulseAudio.
4 Copyright 2004-2006 Lennart Poettering
5 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
7 PulseAudio is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published
9 by the Free Software Foundation; either version 2.1 of the License,
10 or (at your option) any later version.
12 PulseAudio is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
28 #include <pulse/format.h>
29 #include <pulse/utf8.h>
30 #include <pulse/xmalloc.h>
31 #include <pulse/timeval.h>
32 #include <pulse/util.h>
33 #include <pulse/rtclock.h>
34 #include <pulse/internal.h>
36 #include <pulsecore/core-util.h>
37 #include <pulsecore/source-output.h>
38 #include <pulsecore/namereg.h>
39 #include <pulsecore/core-subscribe.h>
40 #include <pulsecore/log.h>
41 #include <pulsecore/mix.h>
42 #include <pulsecore/flist.h>
46 #define ABSOLUTE_MIN_LATENCY (500)
47 #define ABSOLUTE_MAX_LATENCY (10*PA_USEC_PER_SEC)
48 #define DEFAULT_FIXED_LATENCY (250*PA_USEC_PER_MSEC)
50 PA_DEFINE_PUBLIC_CLASS(pa_source, pa_msgobject);
52 struct pa_source_volume_change {
56 PA_LLIST_FIELDS(pa_source_volume_change);
59 struct set_state_data {
60 pa_source_state_t state;
61 pa_suspend_cause_t suspend_cause;
64 static void source_free(pa_object *o);
66 static void pa_source_volume_change_push(pa_source *s);
67 static void pa_source_volume_change_flush(pa_source *s);
69 pa_source_new_data* pa_source_new_data_init(pa_source_new_data *data) {
73 data->proplist = pa_proplist_new();
74 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);
79 void pa_source_new_data_set_name(pa_source_new_data *data, const char *name) {
83 data->name = pa_xstrdup(name);
86 void pa_source_new_data_set_sample_spec(pa_source_new_data *data, const pa_sample_spec *spec) {
89 if ((data->sample_spec_is_set = !!spec))
90 data->sample_spec = *spec;
93 void pa_source_new_data_set_channel_map(pa_source_new_data *data, const pa_channel_map *map) {
96 if ((data->channel_map_is_set = !!map))
97 data->channel_map = *map;
100 void pa_source_new_data_set_alternate_sample_rate(pa_source_new_data *data, const uint32_t alternate_sample_rate) {
103 data->alternate_sample_rate_is_set = true;
104 data->alternate_sample_rate = alternate_sample_rate;
107 void pa_source_new_data_set_volume(pa_source_new_data *data, const pa_cvolume *volume) {
110 if ((data->volume_is_set = !!volume))
111 data->volume = *volume;
114 void pa_source_new_data_set_muted(pa_source_new_data *data, bool mute) {
117 data->muted_is_set = true;
121 void pa_source_new_data_set_port(pa_source_new_data *data, const char *port) {
124 pa_xfree(data->active_port);
125 data->active_port = pa_xstrdup(port);
128 void pa_source_new_data_done(pa_source_new_data *data) {
131 pa_proplist_free(data->proplist);
134 pa_hashmap_free(data->ports);
136 pa_xfree(data->name);
137 pa_xfree(data->active_port);
140 /* Called from main context */
141 static void reset_callbacks(pa_source *s) {
144 s->set_state_in_main_thread = NULL;
145 s->set_state_in_io_thread = NULL;
146 s->get_volume = NULL;
147 s->set_volume = NULL;
148 s->write_volume = NULL;
151 s->update_requested_latency = NULL;
153 s->get_formats = NULL;
154 s->reconfigure = NULL;
157 /* Called from main context */
158 pa_source* pa_source_new(
160 pa_source_new_data *data,
161 pa_source_flags_t flags) {
165 char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
170 pa_assert(data->name);
171 pa_assert_ctl_context();
173 s = pa_msgobject_new(pa_source);
175 if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
176 pa_log_debug("Failed to register name %s.", data->name);
181 pa_source_new_data_set_name(data, name);
183 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
185 pa_namereg_unregister(core, name);
189 /* FIXME, need to free s here on failure */
191 pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
192 pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
194 pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
196 if (!data->channel_map_is_set)
197 pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
199 pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
200 pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
202 /* FIXME: There should probably be a general function for checking whether
203 * the source volume is allowed to be set, like there is for source outputs. */
204 pa_assert(!data->volume_is_set || !(flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
206 if (!data->volume_is_set) {
207 pa_cvolume_reset(&data->volume, data->sample_spec.channels);
208 data->save_volume = false;
211 pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
212 pa_return_null_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec));
214 if (!data->muted_is_set)
218 pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
220 pa_device_init_description(data->proplist, data->card);
221 pa_device_init_icon(data->proplist, false);
222 pa_device_init_intended_roles(data->proplist);
224 if (!data->active_port) {
225 pa_device_port *p = pa_device_port_find_best(data->ports);
227 pa_source_new_data_set_port(data, p->name);
230 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
232 pa_namereg_unregister(core, name);
236 s->parent.parent.free = source_free;
237 s->parent.process_msg = pa_source_process_msg;
240 s->state = PA_SOURCE_INIT;
243 s->suspend_cause = data->suspend_cause;
244 s->name = pa_xstrdup(name);
245 s->proplist = pa_proplist_copy(data->proplist);
246 s->driver = pa_xstrdup(pa_path_get_filename(data->driver));
247 s->module = data->module;
248 s->card = data->card;
250 s->priority = pa_device_init_priority(s->proplist);
252 s->sample_spec = data->sample_spec;
253 s->channel_map = data->channel_map;
254 s->default_sample_rate = s->sample_spec.rate;
256 if (data->alternate_sample_rate_is_set)
257 s->alternate_sample_rate = data->alternate_sample_rate;
259 s->alternate_sample_rate = s->core->alternate_sample_rate;
261 s->avoid_resampling = data->avoid_resampling;
263 s->outputs = pa_idxset_new(NULL, NULL);
265 s->monitor_of = NULL;
266 s->output_from_master = NULL;
268 s->reference_volume = s->real_volume = data->volume;
269 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
270 s->base_volume = PA_VOLUME_NORM;
271 s->n_volume_steps = PA_VOLUME_NORM+1;
272 s->muted = data->muted;
273 s->refresh_volume = s->refresh_muted = false;
280 /* As a minor optimization we just steal the list instead of
282 s->ports = data->ports;
285 s->active_port = NULL;
286 s->save_port = false;
288 if (data->active_port)
289 if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
290 s->save_port = data->save_port;
292 /* Hopefully the active port has already been assigned in the previous call
293 to pa_device_port_find_best, but better safe than sorry */
295 s->active_port = pa_device_port_find_best(s->ports);
298 s->port_latency_offset = s->active_port->latency_offset;
300 s->port_latency_offset = 0;
302 s->save_volume = data->save_volume;
303 s->save_muted = data->save_muted;
305 pa_silence_memchunk_get(
306 &core->silence_cache,
312 s->thread_info.rtpoll = NULL;
313 s->thread_info.outputs = pa_hashmap_new_full(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func, NULL,
314 (pa_free_cb_t) pa_source_output_unref);
315 s->thread_info.soft_volume = s->soft_volume;
316 s->thread_info.soft_muted = s->muted;
317 s->thread_info.state = s->state;
318 s->thread_info.max_rewind = 0;
319 s->thread_info.requested_latency_valid = false;
320 s->thread_info.requested_latency = 0;
321 s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
322 s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
323 s->thread_info.fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
325 PA_LLIST_HEAD_INIT(pa_source_volume_change, s->thread_info.volume_changes);
326 s->thread_info.volume_changes_tail = NULL;
327 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
328 s->thread_info.volume_change_safety_margin = core->deferred_volume_safety_margin_usec;
329 s->thread_info.volume_change_extra_delay = core->deferred_volume_extra_delay_usec;
330 s->thread_info.port_latency_offset = s->port_latency_offset;
332 /* FIXME: This should probably be moved to pa_source_put() */
333 pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
336 pa_assert_se(pa_idxset_put(s->card->sources, s, NULL) >= 0);
338 pt = pa_proplist_to_string_sep(s->proplist, "\n ");
339 pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s\n %s",
342 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
343 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
350 /* Called from main context */
351 static int source_set_state(pa_source *s, pa_source_state_t state, pa_suspend_cause_t suspend_cause) {
354 bool suspend_cause_changed;
359 pa_assert_ctl_context();
361 state_changed = state != s->state;
362 suspend_cause_changed = suspend_cause != s->suspend_cause;
364 if (!state_changed && !suspend_cause_changed)
367 suspending = PA_SOURCE_IS_OPENED(s->state) && state == PA_SOURCE_SUSPENDED;
368 resuming = s->state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state);
370 /* If we are resuming, suspend_cause must be 0. */
371 pa_assert(!resuming || !suspend_cause);
373 /* Here's something to think about: what to do with the suspend cause if
374 * resuming the source fails? The old suspend cause will be incorrect, so we
375 * can't use that. On the other hand, if we set no suspend cause (as is the
376 * case currently), then it looks strange to have a source suspended without
377 * any cause. It might be a good idea to add a new "resume failed" suspend
378 * cause, or it might just add unnecessary complexity, given that the
379 * current approach of not setting any suspend cause works well enough. */
381 if (s->set_state_in_main_thread) {
382 if ((ret = s->set_state_in_main_thread(s, state, suspend_cause)) < 0) {
383 /* set_state_in_main_thread() is allowed to fail only when resuming. */
386 /* If resuming fails, we set the state to SUSPENDED and
387 * suspend_cause to 0. */
388 state = PA_SOURCE_SUSPENDED;
390 state_changed = false;
391 suspend_cause_changed = suspend_cause != s->suspend_cause;
394 /* We know the state isn't changing. If the suspend cause isn't
395 * changing either, then there's nothing more to do. */
396 if (!suspend_cause_changed)
402 struct set_state_data data = { .state = state, .suspend_cause = suspend_cause };
404 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, &data, 0, NULL)) < 0) {
405 /* SET_STATE is allowed to fail only when resuming. */
408 if (s->set_state_in_main_thread)
409 s->set_state_in_main_thread(s, PA_SOURCE_SUSPENDED, 0);
411 /* If resuming fails, we set the state to SUSPENDED and
412 * suspend_cause to 0. */
413 state = PA_SOURCE_SUSPENDED;
415 state_changed = false;
416 suspend_cause_changed = suspend_cause != s->suspend_cause;
419 /* We know the state isn't changing. If the suspend cause isn't
420 * changing either, then there's nothing more to do. */
421 if (!suspend_cause_changed)
426 if (suspend_cause_changed) {
427 char old_cause_buf[PA_SUSPEND_CAUSE_TO_STRING_BUF_SIZE];
428 char new_cause_buf[PA_SUSPEND_CAUSE_TO_STRING_BUF_SIZE];
430 pa_log_debug("%s: suspend_cause: %s -> %s", s->name, pa_suspend_cause_to_string(s->suspend_cause, old_cause_buf),
431 pa_suspend_cause_to_string(suspend_cause, new_cause_buf));
432 s->suspend_cause = suspend_cause;
436 pa_log_debug("%s: state: %s -> %s", s->name, pa_source_state_to_string(s->state), pa_source_state_to_string(state));
439 /* If we enter UNLINKED state, then we don't send change notifications.
440 * pa_source_unlink() will send unlink notifications instead. */
441 if (state == PA_SOURCE_UNLINKED) {
442 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
443 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
447 if (suspending || resuming) {
451 /* We're suspending or resuming, tell everyone about it */
453 PA_IDXSET_FOREACH(o, s->outputs, idx)
454 if (s->state == PA_SOURCE_SUSPENDED &&
455 (o->flags & PA_SOURCE_OUTPUT_KILL_ON_SUSPEND))
456 pa_source_output_kill(o);
458 o->suspend(o, state == PA_SOURCE_SUSPENDED);
464 void pa_source_set_get_volume_callback(pa_source *s, pa_source_cb_t cb) {
470 void pa_source_set_set_volume_callback(pa_source *s, pa_source_cb_t cb) {
471 pa_source_flags_t flags;
474 pa_assert(!s->write_volume || cb);
478 /* Save the current flags so we can tell if they've changed */
482 /* The source implementor is responsible for setting decibel volume support */
483 s->flags |= PA_SOURCE_HW_VOLUME_CTRL;
485 s->flags &= ~PA_SOURCE_HW_VOLUME_CTRL;
486 /* See note below in pa_source_put() about volume sharing and decibel volumes */
487 pa_source_enable_decibel_volume(s, !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
490 /* If the flags have changed after init, let any clients know via a change event */
491 if (s->state != PA_SOURCE_INIT && flags != s->flags)
492 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
495 void pa_source_set_write_volume_callback(pa_source *s, pa_source_cb_t cb) {
496 pa_source_flags_t flags;
499 pa_assert(!cb || s->set_volume);
501 s->write_volume = cb;
503 /* Save the current flags so we can tell if they've changed */
507 s->flags |= PA_SOURCE_DEFERRED_VOLUME;
509 s->flags &= ~PA_SOURCE_DEFERRED_VOLUME;
511 /* If the flags have changed after init, let any clients know via a change event */
512 if (s->state != PA_SOURCE_INIT && flags != s->flags)
513 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
516 void pa_source_set_get_mute_callback(pa_source *s, pa_source_get_mute_cb_t cb) {
522 void pa_source_set_set_mute_callback(pa_source *s, pa_source_cb_t cb) {
523 pa_source_flags_t flags;
529 /* Save the current flags so we can tell if they've changed */
533 s->flags |= PA_SOURCE_HW_MUTE_CTRL;
535 s->flags &= ~PA_SOURCE_HW_MUTE_CTRL;
537 /* If the flags have changed after init, let any clients know via a change event */
538 if (s->state != PA_SOURCE_INIT && flags != s->flags)
539 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
542 static void enable_flat_volume(pa_source *s, bool enable) {
543 pa_source_flags_t flags;
547 /* Always follow the overall user preference here */
548 enable = enable && s->core->flat_volumes;
550 /* Save the current flags so we can tell if they've changed */
554 s->flags |= PA_SOURCE_FLAT_VOLUME;
556 s->flags &= ~PA_SOURCE_FLAT_VOLUME;
558 /* If the flags have changed after init, let any clients know via a change event */
559 if (s->state != PA_SOURCE_INIT && flags != s->flags)
560 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
563 void pa_source_enable_decibel_volume(pa_source *s, bool enable) {
564 pa_source_flags_t flags;
568 /* Save the current flags so we can tell if they've changed */
572 s->flags |= PA_SOURCE_DECIBEL_VOLUME;
573 enable_flat_volume(s, true);
575 s->flags &= ~PA_SOURCE_DECIBEL_VOLUME;
576 enable_flat_volume(s, false);
579 /* If the flags have changed after init, let any clients know via a change event */
580 if (s->state != PA_SOURCE_INIT && flags != s->flags)
581 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
584 /* Called from main context */
585 void pa_source_put(pa_source *s) {
586 pa_source_assert_ref(s);
587 pa_assert_ctl_context();
589 pa_assert(s->state == PA_SOURCE_INIT);
590 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || pa_source_is_filter(s));
592 /* The following fields must be initialized properly when calling _put() */
593 pa_assert(s->asyncmsgq);
594 pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
596 /* Generally, flags should be initialized via pa_source_new(). As a
597 * special exception we allow some volume related flags to be set
598 * between _new() and _put() by the callback setter functions above.
600 * Thus we implement a couple safeguards here which ensure the above
601 * setters were used (or at least the implementor made manual changes
602 * in a compatible way).
604 * Note: All of these flags set here can change over the life time
606 pa_assert(!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) || s->set_volume);
607 pa_assert(!(s->flags & PA_SOURCE_DEFERRED_VOLUME) || s->write_volume);
608 pa_assert(!(s->flags & PA_SOURCE_HW_MUTE_CTRL) || s->set_mute);
610 /* XXX: Currently decibel volume is disabled for all sources that use volume
611 * sharing. When the master source supports decibel volume, it would be good
612 * to have the flag also in the filter source, but currently we don't do that
613 * so that the flags of the filter source never change when it's moved from
614 * a master source to another. One solution for this problem would be to
615 * remove user-visible volume altogether from filter sources when volume
616 * sharing is used, but the current approach was easier to implement... */
617 /* We always support decibel volumes in software, otherwise we leave it to
618 * the source implementor to set this flag as needed.
620 * Note: This flag can also change over the life time of the source. */
621 if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
622 pa_source_enable_decibel_volume(s, true);
623 s->soft_volume = s->reference_volume;
626 /* If the source implementor support DB volumes by itself, we should always
627 * try and enable flat volumes too */
628 if ((s->flags & PA_SOURCE_DECIBEL_VOLUME))
629 enable_flat_volume(s, true);
631 if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
632 pa_source *root_source = pa_source_get_master(s);
634 pa_assert(PA_LIKELY(root_source));
636 s->reference_volume = root_source->reference_volume;
637 pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
639 s->real_volume = root_source->real_volume;
640 pa_cvolume_remap(&s->real_volume, &root_source->channel_map, &s->channel_map);
642 /* We assume that if the sink implementor changed the default
643 * volume he did so in real_volume, because that is the usual
644 * place where he is supposed to place his changes. */
645 s->reference_volume = s->real_volume;
647 s->thread_info.soft_volume = s->soft_volume;
648 s->thread_info.soft_muted = s->muted;
649 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
651 pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL)
652 || (s->base_volume == PA_VOLUME_NORM
653 && ((s->flags & PA_SOURCE_DECIBEL_VOLUME || (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)))));
654 pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
655 pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == !(s->thread_info.fixed_latency == 0));
657 if (s->suspend_cause)
658 pa_assert_se(source_set_state(s, PA_SOURCE_SUSPENDED, s->suspend_cause) == 0);
660 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE, 0) == 0);
662 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
663 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
665 /* This function must be called after the PA_CORE_HOOK_SOURCE_PUT hook,
666 * because module-switch-on-connect needs to know the old default source */
667 pa_core_update_default_source(s->core);
670 /* Called from main context */
671 void pa_source_unlink(pa_source *s) {
673 pa_source_output *o, PA_UNUSED *j = NULL;
675 pa_source_assert_ref(s);
676 pa_assert_ctl_context();
678 /* See pa_sink_unlink() for a couple of comments how this function
681 if (s->unlink_requested)
684 s->unlink_requested = true;
686 linked = PA_SOURCE_IS_LINKED(s->state);
689 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
691 if (s->state != PA_SOURCE_UNLINKED)
692 pa_namereg_unregister(s->core, s->name);
693 pa_idxset_remove_by_data(s->core->sources, s, NULL);
695 pa_core_update_default_source(s->core);
698 pa_idxset_remove_by_data(s->card->sources, s, NULL);
700 while ((o = pa_idxset_first(s->outputs, NULL))) {
702 pa_source_output_kill(o);
707 source_set_state(s, PA_SOURCE_UNLINKED, 0);
709 s->state = PA_SOURCE_UNLINKED;
714 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
715 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
719 /* Called from main context */
720 static void source_free(pa_object *o) {
721 pa_source *s = PA_SOURCE(o);
724 pa_assert_ctl_context();
725 pa_assert(pa_source_refcnt(s) == 0);
726 pa_assert(!PA_SOURCE_IS_LINKED(s->state));
728 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
730 pa_source_volume_change_flush(s);
732 pa_idxset_free(s->outputs, NULL);
733 pa_hashmap_free(s->thread_info.outputs);
735 if (s->silence.memblock)
736 pa_memblock_unref(s->silence.memblock);
742 pa_proplist_free(s->proplist);
745 pa_hashmap_free(s->ports);
750 /* Called from main context, and not while the IO thread is active, please */
751 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
752 pa_source_assert_ref(s);
753 pa_assert_ctl_context();
758 /* Called from main context, and not while the IO thread is active, please */
759 void pa_source_update_flags(pa_source *s, pa_source_flags_t mask, pa_source_flags_t value) {
760 pa_source_flags_t old_flags;
761 pa_source_output *output;
764 pa_source_assert_ref(s);
765 pa_assert_ctl_context();
767 /* For now, allow only a minimal set of flags to be changed. */
768 pa_assert((mask & ~(PA_SOURCE_DYNAMIC_LATENCY|PA_SOURCE_LATENCY)) == 0);
770 old_flags = s->flags;
771 s->flags = (s->flags & ~mask) | (value & mask);
773 if (s->flags == old_flags)
776 if ((s->flags & PA_SOURCE_LATENCY) != (old_flags & PA_SOURCE_LATENCY))
777 pa_log_debug("Source %s: LATENCY flag %s.", s->name, (s->flags & PA_SOURCE_LATENCY) ? "enabled" : "disabled");
779 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY) != (old_flags & PA_SOURCE_DYNAMIC_LATENCY))
780 pa_log_debug("Source %s: DYNAMIC_LATENCY flag %s.",
781 s->name, (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ? "enabled" : "disabled");
783 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
784 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_FLAGS_CHANGED], s);
786 PA_IDXSET_FOREACH(output, s->outputs, idx) {
787 if (output->destination_source)
788 pa_source_update_flags(output->destination_source, mask, value);
792 /* Called from IO context, or before _put() from main context */
793 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
794 pa_source_assert_ref(s);
795 pa_source_assert_io_context(s);
797 s->thread_info.rtpoll = p;
800 /* Called from main context */
801 int pa_source_update_status(pa_source*s) {
802 pa_source_assert_ref(s);
803 pa_assert_ctl_context();
804 pa_assert(PA_SOURCE_IS_LINKED(s->state));
806 if (s->state == PA_SOURCE_SUSPENDED)
809 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE, 0);
812 /* Called from main context */
813 int pa_source_suspend(pa_source *s, bool suspend, pa_suspend_cause_t cause) {
814 pa_suspend_cause_t merged_cause;
816 pa_source_assert_ref(s);
817 pa_assert_ctl_context();
818 pa_assert(PA_SOURCE_IS_LINKED(s->state));
819 pa_assert(cause != 0);
821 if (s->monitor_of && cause != PA_SUSPEND_PASSTHROUGH)
822 return -PA_ERR_NOTSUPPORTED;
825 merged_cause = s->suspend_cause | cause;
827 merged_cause = s->suspend_cause & ~cause;
830 return source_set_state(s, PA_SOURCE_SUSPENDED, merged_cause);
832 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE, 0);
835 /* Called from main context */
836 int pa_source_sync_suspend(pa_source *s) {
837 pa_sink_state_t state;
838 pa_suspend_cause_t suspend_cause;
840 pa_source_assert_ref(s);
841 pa_assert_ctl_context();
842 pa_assert(PA_SOURCE_IS_LINKED(s->state));
843 pa_assert(s->monitor_of);
845 state = s->monitor_of->state;
846 suspend_cause = s->monitor_of->suspend_cause;
848 /* The monitor source usually has the same state and suspend cause as the
849 * sink, the only exception is when the monitor source is suspended due to
850 * the sink being in the passthrough mode. If the monitor currently has the
851 * PASSTHROUGH suspend cause, then we have to keep the monitor suspended
852 * even if the sink is running. */
853 if (s->suspend_cause & PA_SUSPEND_PASSTHROUGH)
854 suspend_cause |= PA_SUSPEND_PASSTHROUGH;
856 if (state == PA_SINK_SUSPENDED || suspend_cause)
857 return source_set_state(s, PA_SOURCE_SUSPENDED, suspend_cause);
859 pa_assert(PA_SINK_IS_OPENED(state));
861 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE, 0);
864 /* Called from main context */
865 pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q) {
866 pa_source_output *o, *n;
869 pa_source_assert_ref(s);
870 pa_assert_ctl_context();
871 pa_assert(PA_SOURCE_IS_LINKED(s->state));
876 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = n) {
877 n = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx));
879 pa_source_output_ref(o);
881 if (pa_source_output_start_move(o) >= 0)
884 pa_source_output_unref(o);
890 /* Called from main context */
891 void pa_source_move_all_finish(pa_source *s, pa_queue *q, bool save) {
894 pa_source_assert_ref(s);
895 pa_assert_ctl_context();
896 pa_assert(PA_SOURCE_IS_LINKED(s->state));
899 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
900 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state)) {
901 if (pa_source_output_finish_move(o, s, save) < 0)
902 pa_source_output_fail_move(o);
905 pa_source_output_unref(o);
908 pa_queue_free(q, NULL);
911 /* Called from main context */
912 void pa_source_move_all_fail(pa_queue *q) {
915 pa_assert_ctl_context();
918 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
919 pa_source_output_fail_move(o);
920 pa_source_output_unref(o);
923 pa_queue_free(q, NULL);
926 /* Called from IO thread context */
927 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
931 pa_source_assert_ref(s);
932 pa_source_assert_io_context(s);
933 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
938 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
941 pa_log_debug("Processing rewind...");
943 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
944 pa_source_output_assert_ref(o);
945 pa_source_output_process_rewind(o, nbytes);
949 /* Called from IO thread context */
950 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
954 pa_source_assert_ref(s);
955 pa_source_assert_io_context(s);
956 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
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 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
974 pa_source_output_assert_ref(o);
976 if (!o->thread_info.direct_on_input)
977 pa_source_output_push(o, &vchunk);
980 pa_memblock_unref(vchunk.memblock);
983 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
984 pa_source_output_assert_ref(o);
986 if (!o->thread_info.direct_on_input)
987 pa_source_output_push(o, chunk);
992 /* Called from IO thread context */
993 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
994 pa_source_assert_ref(s);
995 pa_source_assert_io_context(s);
996 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
997 pa_source_output_assert_ref(o);
998 pa_assert(o->thread_info.direct_on_input);
1001 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1004 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
1005 pa_memchunk vchunk = *chunk;
1007 pa_memblock_ref(vchunk.memblock);
1008 pa_memchunk_make_writable(&vchunk, 0);
1010 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
1011 pa_silence_memchunk(&vchunk, &s->sample_spec);
1013 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
1015 pa_source_output_push(o, &vchunk);
1017 pa_memblock_unref(vchunk.memblock);
1019 pa_source_output_push(o, chunk);
1022 /* Called from main thread */
1023 int pa_source_reconfigure(pa_source *s, pa_sample_spec *spec, bool passthrough) {
1025 pa_sample_spec desired_spec;
1026 uint32_t default_rate = s->default_sample_rate;
1027 uint32_t alternate_rate = s->alternate_sample_rate;
1028 bool default_rate_is_usable = false;
1029 bool alternate_rate_is_usable = false;
1030 bool avoid_resampling = s->avoid_resampling;
1032 /* We currently only try to reconfigure the sample rate */
1034 if (pa_sample_spec_equal(spec, &s->sample_spec))
1037 if (!s->reconfigure && !s->monitor_of)
1040 if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough && !avoid_resampling)) {
1041 pa_log_debug("Default and alternate sample rates are the same, so there is no point in switching.");
1045 if (PA_SOURCE_IS_RUNNING(s->state)) {
1046 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u Hz",
1047 s->sample_spec.rate);
1051 if (s->monitor_of) {
1052 if (PA_SINK_IS_RUNNING(s->monitor_of->state)) {
1053 pa_log_info("Cannot update rate, this is a monitor source and the sink is running.");
1058 if (PA_UNLIKELY(!pa_sample_spec_valid(spec)))
1061 desired_spec = s->sample_spec;
1064 /* We have to try to use the source output rate */
1065 desired_spec.rate = spec->rate;
1067 } else if (avoid_resampling && (spec->rate >= default_rate || spec->rate >= alternate_rate)) {
1068 /* We just try to set the source output's sample rate if it's not too low */
1069 desired_spec.rate = spec->rate;
1071 } else if (default_rate == spec->rate || alternate_rate == spec->rate) {
1072 /* We can directly try to use this rate */
1073 desired_spec.rate = spec->rate;
1076 /* See if we can pick a rate that results in less resampling effort */
1077 if (default_rate % 11025 == 0 && spec->rate % 11025 == 0)
1078 default_rate_is_usable = true;
1079 if (default_rate % 4000 == 0 && spec->rate % 4000 == 0)
1080 default_rate_is_usable = true;
1081 if (alternate_rate % 11025 == 0 && spec->rate % 11025 == 0)
1082 alternate_rate_is_usable = true;
1083 if (alternate_rate % 4000 == 0 && spec->rate % 4000 == 0)
1084 alternate_rate_is_usable = true;
1086 if (alternate_rate_is_usable && !default_rate_is_usable)
1087 desired_spec.rate = alternate_rate;
1089 desired_spec.rate = default_rate;
1092 if (pa_sample_spec_equal(&desired_spec, &s->sample_spec) && passthrough == pa_source_is_passthrough(s))
1095 if (!passthrough && pa_source_used_by(s) > 0)
1098 pa_log_debug("Suspending source %s due to changing the sample rate to %u", s->name, desired_spec.rate);
1099 pa_source_suspend(s, true, PA_SUSPEND_INTERNAL);
1102 ret = s->reconfigure(s, &desired_spec, passthrough);
1104 /* This is a monitor source. */
1106 /* XXX: This code is written with non-passthrough streams in mind. I
1107 * have no idea whether the behaviour with passthrough streams is
1110 pa_sample_spec old_spec = s->sample_spec;
1112 s->sample_spec = desired_spec;
1113 ret = pa_sink_reconfigure(s->monitor_of, &desired_spec, false);
1116 /* Changing the sink rate failed, roll back the old rate for
1117 * the monitor source. Why did we set the source rate before
1118 * calling pa_sink_reconfigure(), you may ask. The reason is
1119 * that pa_sink_reconfigure() tries to update the monitor
1120 * source rate, but we are already in the process of updating
1121 * the monitor source rate, so there's a risk of entering an
1122 * infinite loop. Setting the source rate before calling
1123 * pa_sink_reconfigure() makes the rate == s->sample_spec.rate
1124 * check in the beginning of this function return early, so we
1126 s->sample_spec = old_spec;
1134 pa_source_output *o;
1136 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1137 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1138 pa_source_output_update_rate(o);
1141 pa_log_info("Changed sampling rate successfully");
1144 pa_source_suspend(s, false, PA_SUSPEND_INTERNAL);
1149 /* Called from main thread */
1150 pa_usec_t pa_source_get_latency(pa_source *s) {
1153 pa_source_assert_ref(s);
1154 pa_assert_ctl_context();
1155 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1157 if (s->state == PA_SOURCE_SUSPENDED)
1160 if (!(s->flags & PA_SOURCE_LATENCY))
1163 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1165 /* The return value is unsigned, so check that the offset can be added to usec without
1167 if (-s->port_latency_offset <= usec)
1168 usec += s->port_latency_offset;
1172 return (pa_usec_t)usec;
1175 /* Called from IO thread */
1176 int64_t pa_source_get_latency_within_thread(pa_source *s, bool allow_negative) {
1180 pa_source_assert_ref(s);
1181 pa_source_assert_io_context(s);
1182 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1184 /* The returned value is supposed to be in the time domain of the sound card! */
1186 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1189 if (!(s->flags & PA_SOURCE_LATENCY))
1192 o = PA_MSGOBJECT(s);
1194 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1196 o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL);
1198 /* If allow_negative is false, the call should only return positive values, */
1199 usec += s->thread_info.port_latency_offset;
1200 if (!allow_negative && usec < 0)
1206 /* Called from the main thread (and also from the IO thread while the main
1207 * thread is waiting).
1209 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1210 * set. Instead, flat volume mode is detected by checking whether the root source
1211 * has the flag set. */
1212 bool pa_source_flat_volume_enabled(pa_source *s) {
1213 pa_source_assert_ref(s);
1215 s = pa_source_get_master(s);
1218 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1223 /* Called from the main thread (and also from the IO thread while the main
1224 * thread is waiting). */
1225 pa_source *pa_source_get_master(pa_source *s) {
1226 pa_source_assert_ref(s);
1228 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1229 if (PA_UNLIKELY(!s->output_from_master))
1232 s = s->output_from_master->source;
1238 /* Called from main context */
1239 bool pa_source_is_filter(pa_source *s) {
1240 pa_source_assert_ref(s);
1242 return (s->output_from_master != NULL);
1245 /* Called from main context */
1246 bool pa_source_is_passthrough(pa_source *s) {
1248 pa_source_assert_ref(s);
1250 /* NB Currently only monitor sources support passthrough mode */
1251 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1254 /* Called from main context */
1255 void pa_source_enter_passthrough(pa_source *s) {
1258 /* set the volume to NORM */
1259 s->saved_volume = *pa_source_get_volume(s, true);
1260 s->saved_save_volume = s->save_volume;
1262 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1263 pa_source_set_volume(s, &volume, true, false);
1266 /* Called from main context */
1267 void pa_source_leave_passthrough(pa_source *s) {
1268 /* Restore source volume to what it was before we entered passthrough mode */
1269 pa_source_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
1271 pa_cvolume_init(&s->saved_volume);
1272 s->saved_save_volume = false;
1275 /* Called from main context. */
1276 static void compute_reference_ratio(pa_source_output *o) {
1278 pa_cvolume remapped;
1282 pa_assert(pa_source_flat_volume_enabled(o->source));
1285 * Calculates the reference ratio from the source's reference
1286 * volume. This basically calculates:
1288 * o->reference_ratio = o->volume / o->source->reference_volume
1291 remapped = o->source->reference_volume;
1292 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1294 ratio = o->reference_ratio;
1296 for (c = 0; c < o->sample_spec.channels; c++) {
1298 /* We don't update when the source volume is 0 anyway */
1299 if (remapped.values[c] <= PA_VOLUME_MUTED)
1302 /* Don't update the reference ratio unless necessary */
1303 if (pa_sw_volume_multiply(
1305 remapped.values[c]) == o->volume.values[c])
1308 ratio.values[c] = pa_sw_volume_divide(
1309 o->volume.values[c],
1310 remapped.values[c]);
1313 pa_source_output_set_reference_ratio(o, &ratio);
1316 /* Called from main context. Only called for the root source in volume sharing
1317 * cases, except for internal recursive calls. */
1318 static void compute_reference_ratios(pa_source *s) {
1320 pa_source_output *o;
1322 pa_source_assert_ref(s);
1323 pa_assert_ctl_context();
1324 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1325 pa_assert(pa_source_flat_volume_enabled(s));
1327 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1328 compute_reference_ratio(o);
1330 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
1331 && PA_SOURCE_IS_LINKED(o->destination_source->state))
1332 compute_reference_ratios(o->destination_source);
1336 /* Called from main context. Only called for the root source in volume sharing
1337 * cases, except for internal recursive calls. */
1338 static void compute_real_ratios(pa_source *s) {
1339 pa_source_output *o;
1342 pa_source_assert_ref(s);
1343 pa_assert_ctl_context();
1344 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1345 pa_assert(pa_source_flat_volume_enabled(s));
1347 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1349 pa_cvolume remapped;
1351 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1352 /* The origin source uses volume sharing, so this input's real ratio
1353 * is handled as a special case - the real ratio must be 0 dB, and
1354 * as a result i->soft_volume must equal i->volume_factor. */
1355 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1356 o->soft_volume = o->volume_factor;
1358 if (PA_SOURCE_IS_LINKED(o->destination_source->state))
1359 compute_real_ratios(o->destination_source);
1365 * This basically calculates:
1367 * i->real_ratio := i->volume / s->real_volume
1368 * i->soft_volume := i->real_ratio * i->volume_factor
1371 remapped = s->real_volume;
1372 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1374 o->real_ratio.channels = o->sample_spec.channels;
1375 o->soft_volume.channels = o->sample_spec.channels;
1377 for (c = 0; c < o->sample_spec.channels; c++) {
1379 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1380 /* We leave o->real_ratio untouched */
1381 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1385 /* Don't lose accuracy unless necessary */
1386 if (pa_sw_volume_multiply(
1387 o->real_ratio.values[c],
1388 remapped.values[c]) != o->volume.values[c])
1390 o->real_ratio.values[c] = pa_sw_volume_divide(
1391 o->volume.values[c],
1392 remapped.values[c]);
1394 o->soft_volume.values[c] = pa_sw_volume_multiply(
1395 o->real_ratio.values[c],
1396 o->volume_factor.values[c]);
1399 /* We don't copy the soft_volume to the thread_info data
1400 * here. That must be done by the caller */
1404 static pa_cvolume *cvolume_remap_minimal_impact(
1406 const pa_cvolume *template,
1407 const pa_channel_map *from,
1408 const pa_channel_map *to) {
1413 pa_assert(template);
1416 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1417 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1419 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1420 * mapping from source output to source volumes:
1422 * If template is a possible remapping from v it is used instead
1423 * of remapping anew.
1425 * If the channel maps don't match we set an all-channel volume on
1426 * the source to ensure that changing a volume on one stream has no
1427 * effect that cannot be compensated for in another stream that
1428 * does not have the same channel map as the source. */
1430 if (pa_channel_map_equal(from, to))
1434 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1439 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1443 /* Called from main thread. Only called for the root source in volume sharing
1444 * cases, except for internal recursive calls. */
1445 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1446 pa_source_output *o;
1449 pa_source_assert_ref(s);
1450 pa_assert(max_volume);
1451 pa_assert(channel_map);
1452 pa_assert(pa_source_flat_volume_enabled(s));
1454 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1455 pa_cvolume remapped;
1457 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1458 if (PA_SOURCE_IS_LINKED(o->destination_source->state))
1459 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1461 /* Ignore this output. The origin source uses volume sharing, so this
1462 * output's volume will be set to be equal to the root source's real
1463 * volume. Obviously this output's current volume must not then
1464 * affect what the root source's real volume will be. */
1468 remapped = o->volume;
1469 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1470 pa_cvolume_merge(max_volume, max_volume, &remapped);
1474 /* Called from main thread. Only called for the root source in volume sharing
1475 * cases, except for internal recursive calls. */
1476 static bool has_outputs(pa_source *s) {
1477 pa_source_output *o;
1480 pa_source_assert_ref(s);
1482 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1483 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1490 /* Called from main thread. Only called for the root source in volume sharing
1491 * cases, except for internal recursive calls. */
1492 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1493 pa_source_output *o;
1496 pa_source_assert_ref(s);
1497 pa_assert(new_volume);
1498 pa_assert(channel_map);
1500 s->real_volume = *new_volume;
1501 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1503 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1504 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1505 if (pa_source_flat_volume_enabled(s)) {
1506 pa_cvolume new_output_volume;
1508 /* Follow the root source's real volume. */
1509 new_output_volume = *new_volume;
1510 pa_cvolume_remap(&new_output_volume, channel_map, &o->channel_map);
1511 pa_source_output_set_volume_direct(o, &new_output_volume);
1512 compute_reference_ratio(o);
1515 if (PA_SOURCE_IS_LINKED(o->destination_source->state))
1516 update_real_volume(o->destination_source, new_volume, channel_map);
1521 /* Called from main thread. Only called for the root source in shared volume
1523 static void compute_real_volume(pa_source *s) {
1524 pa_source_assert_ref(s);
1525 pa_assert_ctl_context();
1526 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1527 pa_assert(pa_source_flat_volume_enabled(s));
1528 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1530 /* This determines the maximum volume of all streams and sets
1531 * s->real_volume accordingly. */
1533 if (!has_outputs(s)) {
1534 /* In the special case that we have no source outputs we leave the
1535 * volume unmodified. */
1536 update_real_volume(s, &s->reference_volume, &s->channel_map);
1540 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1542 /* First let's determine the new maximum volume of all outputs
1543 * connected to this source */
1544 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1545 update_real_volume(s, &s->real_volume, &s->channel_map);
1547 /* Then, let's update the real ratios/soft volumes of all outputs
1548 * connected to this source */
1549 compute_real_ratios(s);
1552 /* Called from main thread. Only called for the root source in shared volume
1553 * cases, except for internal recursive calls. */
1554 static void propagate_reference_volume(pa_source *s) {
1555 pa_source_output *o;
1558 pa_source_assert_ref(s);
1559 pa_assert_ctl_context();
1560 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1561 pa_assert(pa_source_flat_volume_enabled(s));
1563 /* This is called whenever the source volume changes that is not
1564 * caused by a source output volume change. We need to fix up the
1565 * source output volumes accordingly */
1567 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1568 pa_cvolume new_volume;
1570 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1571 if (PA_SOURCE_IS_LINKED(o->destination_source->state))
1572 propagate_reference_volume(o->destination_source);
1574 /* Since the origin source uses volume sharing, this output's volume
1575 * needs to be updated to match the root source's real volume, but
1576 * that will be done later in update_real_volume(). */
1580 /* This basically calculates:
1582 * o->volume := o->reference_volume * o->reference_ratio */
1584 new_volume = s->reference_volume;
1585 pa_cvolume_remap(&new_volume, &s->channel_map, &o->channel_map);
1586 pa_sw_cvolume_multiply(&new_volume, &new_volume, &o->reference_ratio);
1587 pa_source_output_set_volume_direct(o, &new_volume);
1591 /* Called from main thread. Only called for the root source in volume sharing
1592 * cases, except for internal recursive calls. The return value indicates
1593 * whether any reference volume actually changed. */
1594 static bool update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
1596 bool reference_volume_changed;
1597 pa_source_output *o;
1600 pa_source_assert_ref(s);
1601 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1603 pa_assert(channel_map);
1604 pa_assert(pa_cvolume_valid(v));
1607 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1609 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1610 pa_source_set_reference_volume_direct(s, &volume);
1612 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1614 if (!reference_volume_changed && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1615 /* If the root source's volume doesn't change, then there can't be any
1616 * changes in the other source in the source tree either.
1618 * It's probably theoretically possible that even if the root source's
1619 * volume changes slightly, some filter source doesn't change its volume
1620 * due to rounding errors. If that happens, we still want to propagate
1621 * the changed root source volume to the sources connected to the
1622 * intermediate source that didn't change its volume. This theoretical
1623 * possibility is the reason why we have that !(s->flags &
1624 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1625 * notice even if we returned here false always if
1626 * reference_volume_changed is false. */
1629 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1630 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
1631 && PA_SOURCE_IS_LINKED(o->destination_source->state))
1632 update_reference_volume(o->destination_source, v, channel_map, false);
1638 /* Called from main thread */
1639 void pa_source_set_volume(
1641 const pa_cvolume *volume,
1645 pa_cvolume new_reference_volume, root_real_volume;
1646 pa_source *root_source;
1648 pa_source_assert_ref(s);
1649 pa_assert_ctl_context();
1650 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1651 pa_assert(!volume || pa_cvolume_valid(volume));
1652 pa_assert(volume || pa_source_flat_volume_enabled(s));
1653 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1655 /* make sure we don't change the volume in PASSTHROUGH mode ...
1656 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1657 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1658 pa_log_warn("Cannot change volume, source is monitor of a PASSTHROUGH sink");
1662 /* In case of volume sharing, the volume is set for the root source first,
1663 * from which it's then propagated to the sharing sources. */
1664 root_source = pa_source_get_master(s);
1666 if (PA_UNLIKELY(!root_source))
1669 /* As a special exception we accept mono volumes on all sources --
1670 * even on those with more complex channel maps */
1673 if (pa_cvolume_compatible(volume, &s->sample_spec))
1674 new_reference_volume = *volume;
1676 new_reference_volume = s->reference_volume;
1677 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1680 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1682 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1683 if (pa_source_flat_volume_enabled(root_source)) {
1684 /* OK, propagate this volume change back to the outputs */
1685 propagate_reference_volume(root_source);
1687 /* And now recalculate the real volume */
1688 compute_real_volume(root_source);
1690 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1694 /* If volume is NULL we synchronize the source's real and
1695 * reference volumes with the stream volumes. */
1697 pa_assert(pa_source_flat_volume_enabled(root_source));
1699 /* Ok, let's determine the new real volume */
1700 compute_real_volume(root_source);
1702 /* To propagate the reference volume from the filter to the root source,
1703 * we first take the real volume from the root source and remap it to
1704 * match the filter. Then, we merge in the reference volume from the
1705 * filter on top of this, and remap it back to the root source channel
1707 root_real_volume = root_source->real_volume;
1708 /* First we remap root's real volume to filter channel count and map if needed */
1709 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1710 pa_cvolume_remap(&root_real_volume, &root_source->channel_map, &s->channel_map);
1711 /* Then let's 'push' the reference volume if necessary */
1712 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_real_volume);
1713 /* If the source and its root don't have the same number of channels, we need to remap back */
1714 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1715 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1717 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1719 /* Now that the reference volume is updated, we can update the streams'
1720 * reference ratios. */
1721 compute_reference_ratios(root_source);
1724 if (root_source->set_volume) {
1725 /* If we have a function set_volume(), then we do not apply a
1726 * soft volume by default. However, set_volume() is free to
1727 * apply one to root_source->soft_volume */
1729 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1730 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1731 root_source->set_volume(root_source);
1734 /* If we have no function set_volume(), then the soft volume
1735 * becomes the real volume */
1736 root_source->soft_volume = root_source->real_volume;
1738 /* This tells the source that soft volume and/or real volume changed */
1740 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1743 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1744 * Only to be called by source implementor */
1745 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1747 pa_source_assert_ref(s);
1748 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1750 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1751 pa_source_assert_io_context(s);
1753 pa_assert_ctl_context();
1756 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1758 s->soft_volume = *volume;
1760 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1761 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1763 s->thread_info.soft_volume = s->soft_volume;
1766 /* Called from the main thread. Only called for the root source in volume sharing
1767 * cases, except for internal recursive calls. */
1768 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1769 pa_source_output *o;
1772 pa_source_assert_ref(s);
1773 pa_assert(old_real_volume);
1774 pa_assert_ctl_context();
1775 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1777 /* This is called when the hardware's real volume changes due to
1778 * some external event. We copy the real volume into our
1779 * reference volume and then rebuild the stream volumes based on
1780 * i->real_ratio which should stay fixed. */
1782 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1783 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1786 /* 1. Make the real volume the reference volume */
1787 update_reference_volume(s, &s->real_volume, &s->channel_map, true);
1790 if (pa_source_flat_volume_enabled(s)) {
1791 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1792 pa_cvolume new_volume;
1794 /* 2. Since the source's reference and real volumes are equal
1795 * now our ratios should be too. */
1796 pa_source_output_set_reference_ratio(o, &o->real_ratio);
1798 /* 3. Recalculate the new stream reference volume based on the
1799 * reference ratio and the sink's reference volume.
1801 * This basically calculates:
1803 * o->volume = s->reference_volume * o->reference_ratio
1805 * This is identical to propagate_reference_volume() */
1806 new_volume = s->reference_volume;
1807 pa_cvolume_remap(&new_volume, &s->channel_map, &o->channel_map);
1808 pa_sw_cvolume_multiply(&new_volume, &new_volume, &o->reference_ratio);
1809 pa_source_output_set_volume_direct(o, &new_volume);
1811 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
1812 && PA_SOURCE_IS_LINKED(o->destination_source->state))
1813 propagate_real_volume(o->destination_source, old_real_volume);
1817 /* Something got changed in the hardware. It probably makes sense
1818 * to save changed hw settings given that hw volume changes not
1819 * triggered by PA are almost certainly done by the user. */
1820 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1821 s->save_volume = true;
1824 /* Called from io thread */
1825 void pa_source_update_volume_and_mute(pa_source *s) {
1827 pa_source_assert_io_context(s);
1829 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1832 /* Called from main thread */
1833 const pa_cvolume *pa_source_get_volume(pa_source *s, bool force_refresh) {
1834 pa_source_assert_ref(s);
1835 pa_assert_ctl_context();
1836 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1838 if (s->refresh_volume || force_refresh) {
1839 struct pa_cvolume old_real_volume;
1841 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1843 old_real_volume = s->real_volume;
1845 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1848 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1850 update_real_volume(s, &s->real_volume, &s->channel_map);
1851 propagate_real_volume(s, &old_real_volume);
1854 return &s->reference_volume;
1857 /* Called from main thread. In volume sharing cases, only the root source may
1859 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1860 pa_cvolume old_real_volume;
1862 pa_source_assert_ref(s);
1863 pa_assert_ctl_context();
1864 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1865 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1867 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1869 old_real_volume = s->real_volume;
1870 update_real_volume(s, new_real_volume, &s->channel_map);
1871 propagate_real_volume(s, &old_real_volume);
1874 /* Called from main thread */
1875 void pa_source_set_mute(pa_source *s, bool mute, bool save) {
1878 pa_source_assert_ref(s);
1879 pa_assert_ctl_context();
1881 old_muted = s->muted;
1883 if (mute == old_muted) {
1884 s->save_muted |= save;
1889 s->save_muted = save;
1891 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute) {
1892 s->set_mute_in_progress = true;
1894 s->set_mute_in_progress = false;
1897 if (!PA_SOURCE_IS_LINKED(s->state))
1900 pa_log_debug("The mute of source %s changed from %s to %s.", s->name, pa_yes_no(old_muted), pa_yes_no(mute));
1901 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1902 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1903 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_MUTE_CHANGED], s);
1906 /* Called from main thread */
1907 bool pa_source_get_mute(pa_source *s, bool force_refresh) {
1909 pa_source_assert_ref(s);
1910 pa_assert_ctl_context();
1911 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1913 if ((s->refresh_muted || force_refresh) && s->get_mute) {
1916 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
1917 if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &mute, 0, NULL) >= 0)
1918 pa_source_mute_changed(s, mute);
1920 if (s->get_mute(s, &mute) >= 0)
1921 pa_source_mute_changed(s, mute);
1928 /* Called from main thread */
1929 void pa_source_mute_changed(pa_source *s, bool new_muted) {
1930 pa_source_assert_ref(s);
1931 pa_assert_ctl_context();
1932 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1934 if (s->set_mute_in_progress)
1937 /* pa_source_set_mute() does this same check, so this may appear redundant,
1938 * but we must have this here also, because the save parameter of
1939 * pa_source_set_mute() would otherwise have unintended side effects
1940 * (saving the mute state when it shouldn't be saved). */
1941 if (new_muted == s->muted)
1944 pa_source_set_mute(s, new_muted, true);
1947 /* Called from main thread */
1948 bool pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1949 pa_source_assert_ref(s);
1950 pa_assert_ctl_context();
1953 pa_proplist_update(s->proplist, mode, p);
1955 if (PA_SOURCE_IS_LINKED(s->state)) {
1956 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1957 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1963 /* Called from main thread */
1964 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1965 void pa_source_set_description(pa_source *s, const char *description) {
1967 pa_source_assert_ref(s);
1968 pa_assert_ctl_context();
1970 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1973 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1975 if (old && description && pa_streq(old, description))
1979 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1981 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1983 if (PA_SOURCE_IS_LINKED(s->state)) {
1984 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1985 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1989 /* Called from main thread */
1990 unsigned pa_source_linked_by(pa_source *s) {
1991 pa_source_assert_ref(s);
1992 pa_assert_ctl_context();
1993 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1995 return pa_idxset_size(s->outputs);
1998 /* Called from main thread */
1999 unsigned pa_source_used_by(pa_source *s) {
2002 pa_source_assert_ref(s);
2003 pa_assert_ctl_context();
2004 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2006 ret = pa_idxset_size(s->outputs);
2007 pa_assert(ret >= s->n_corked);
2009 return ret - s->n_corked;
2012 /* Called from main thread */
2013 unsigned pa_source_check_suspend(pa_source *s, pa_source_output *ignore) {
2015 pa_source_output *o;
2018 pa_source_assert_ref(s);
2019 pa_assert_ctl_context();
2021 if (!PA_SOURCE_IS_LINKED(s->state))
2026 PA_IDXSET_FOREACH(o, s->outputs, idx) {
2030 /* We do not assert here. It is perfectly valid for a source output to
2031 * be in the INIT state (i.e. created, marked done but not yet put)
2032 * and we should not care if it's unlinked as it won't contribute
2033 * towards our busy status.
2035 if (!PA_SOURCE_OUTPUT_IS_LINKED(o->state))
2038 if (o->state == PA_SOURCE_OUTPUT_CORKED)
2041 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
2050 const char *pa_source_state_to_string(pa_source_state_t state) {
2052 case PA_SOURCE_INIT: return "INIT";
2053 case PA_SOURCE_IDLE: return "IDLE";
2054 case PA_SOURCE_RUNNING: return "RUNNING";
2055 case PA_SOURCE_SUSPENDED: return "SUSPENDED";
2056 case PA_SOURCE_UNLINKED: return "UNLINKED";
2057 case PA_SOURCE_INVALID_STATE: return "INVALID_STATE";
2060 pa_assert_not_reached();
2063 /* Called from the IO thread */
2064 static void sync_output_volumes_within_thread(pa_source *s) {
2065 pa_source_output *o;
2068 pa_source_assert_ref(s);
2069 pa_source_assert_io_context(s);
2071 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
2072 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
2075 o->thread_info.soft_volume = o->soft_volume;
2076 //pa_source_output_request_rewind(o, 0, true, false, false);
2080 /* Called from the IO thread. Only called for the root source in volume sharing
2081 * cases, except for internal recursive calls. */
2082 static void set_shared_volume_within_thread(pa_source *s) {
2083 pa_source_output *o;
2086 pa_source_assert_ref(s);
2088 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
2090 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
2091 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
2092 set_shared_volume_within_thread(o->destination_source);
2096 /* Called from IO thread, except when it is not */
2097 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
2098 pa_source *s = PA_SOURCE(object);
2099 pa_source_assert_ref(s);
2101 switch ((pa_source_message_t) code) {
2103 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
2104 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2106 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
2108 if (o->direct_on_input) {
2109 o->thread_info.direct_on_input = o->direct_on_input;
2110 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
2113 pa_source_output_attach(o);
2115 pa_source_output_set_state_within_thread(o, o->state);
2117 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
2118 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2120 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2122 /* We don't just invalidate the requested latency here,
2123 * because if we are in a move we might need to fix up the
2124 * requested latency. */
2125 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2127 /* In flat volume mode we need to update the volume as
2129 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2132 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
2133 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2135 pa_source_output_set_state_within_thread(o, o->state);
2137 pa_source_output_detach(o);
2139 if (o->thread_info.direct_on_input) {
2140 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
2141 o->thread_info.direct_on_input = NULL;
2144 pa_hashmap_remove_and_free(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index));
2145 pa_source_invalidate_requested_latency(s, true);
2147 /* In flat volume mode we need to update the volume as
2149 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2152 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
2153 pa_source *root_source = pa_source_get_master(s);
2155 if (PA_LIKELY(root_source))
2156 set_shared_volume_within_thread(root_source);
2161 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
2163 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2165 pa_source_volume_change_push(s);
2167 /* Fall through ... */
2169 case PA_SOURCE_MESSAGE_SET_VOLUME:
2171 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2172 s->thread_info.soft_volume = s->soft_volume;
2175 /* Fall through ... */
2177 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
2178 sync_output_volumes_within_thread(s);
2181 case PA_SOURCE_MESSAGE_GET_VOLUME:
2183 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
2185 pa_source_volume_change_flush(s);
2186 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2189 /* In case source implementor reset SW volume. */
2190 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2191 s->thread_info.soft_volume = s->soft_volume;
2196 case PA_SOURCE_MESSAGE_SET_MUTE:
2198 if (s->thread_info.soft_muted != s->muted) {
2199 s->thread_info.soft_muted = s->muted;
2202 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2207 case PA_SOURCE_MESSAGE_GET_MUTE:
2209 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2210 return s->get_mute(s, userdata);
2214 case PA_SOURCE_MESSAGE_SET_STATE: {
2215 struct set_state_data *data = userdata;
2216 bool suspend_change =
2217 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(data->state)) ||
2218 (PA_SOURCE_IS_OPENED(s->thread_info.state) && data->state == PA_SOURCE_SUSPENDED);
2220 if (s->set_state_in_io_thread) {
2223 if ((r = s->set_state_in_io_thread(s, data->state, data->suspend_cause)) < 0)
2227 s->thread_info.state = data->state;
2229 if (suspend_change) {
2230 pa_source_output *o;
2233 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2234 if (o->suspend_within_thread)
2235 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2241 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2243 pa_usec_t *usec = userdata;
2244 *usec = pa_source_get_requested_latency_within_thread(s);
2246 /* Yes, that's right, the IO thread will see -1 when no
2247 * explicit requested latency is configured, the main
2248 * thread will see max_latency */
2249 if (*usec == (pa_usec_t) -1)
2250 *usec = s->thread_info.max_latency;
2255 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2256 pa_usec_t *r = userdata;
2258 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2263 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2264 pa_usec_t *r = userdata;
2266 r[0] = s->thread_info.min_latency;
2267 r[1] = s->thread_info.max_latency;
2272 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2274 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2277 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2279 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2282 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2284 *((size_t*) userdata) = s->thread_info.max_rewind;
2287 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2289 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2292 case PA_SOURCE_MESSAGE_GET_LATENCY:
2294 if (s->monitor_of) {
2295 *((int64_t*) userdata) = -pa_sink_get_latency_within_thread(s->monitor_of, true);
2299 /* Implementors need to overwrite this implementation! */
2302 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2303 /* This message is sent from IO-thread and handled in main thread. */
2304 pa_assert_ctl_context();
2306 /* Make sure we're not messing with main thread when no longer linked */
2307 if (!PA_SOURCE_IS_LINKED(s->state))
2310 pa_source_get_volume(s, true);
2311 pa_source_get_mute(s, true);
2314 case PA_SOURCE_MESSAGE_SET_PORT_LATENCY_OFFSET:
2315 s->thread_info.port_latency_offset = offset;
2318 case PA_SOURCE_MESSAGE_MAX:
2325 /* Called from main thread */
2326 int pa_source_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
2331 pa_core_assert_ref(c);
2332 pa_assert_ctl_context();
2333 pa_assert(cause != 0);
2335 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2338 if (source->monitor_of)
2341 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2348 /* Called from IO thread */
2349 void pa_source_detach_within_thread(pa_source *s) {
2350 pa_source_output *o;
2353 pa_source_assert_ref(s);
2354 pa_source_assert_io_context(s);
2355 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2357 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2358 pa_source_output_detach(o);
2361 /* Called from IO thread */
2362 void pa_source_attach_within_thread(pa_source *s) {
2363 pa_source_output *o;
2366 pa_source_assert_ref(s);
2367 pa_source_assert_io_context(s);
2368 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2370 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2371 pa_source_output_attach(o);
2374 /* Called from IO thread */
2375 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2376 pa_usec_t result = (pa_usec_t) -1;
2377 pa_source_output *o;
2380 pa_source_assert_ref(s);
2381 pa_source_assert_io_context(s);
2383 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2384 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2386 if (s->thread_info.requested_latency_valid)
2387 return s->thread_info.requested_latency;
2389 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2390 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2391 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2392 result = o->thread_info.requested_source_latency;
2394 if (result != (pa_usec_t) -1)
2395 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2397 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2398 /* Only cache this if we are fully set up */
2399 s->thread_info.requested_latency = result;
2400 s->thread_info.requested_latency_valid = true;
2406 /* Called from main thread */
2407 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2410 pa_source_assert_ref(s);
2411 pa_assert_ctl_context();
2412 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2414 if (s->state == PA_SOURCE_SUSPENDED)
2417 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2422 /* Called from IO thread */
2423 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2424 pa_source_output *o;
2427 pa_source_assert_ref(s);
2428 pa_source_assert_io_context(s);
2430 if (max_rewind == s->thread_info.max_rewind)
2433 s->thread_info.max_rewind = max_rewind;
2435 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2436 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2437 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2440 /* Called from main thread */
2441 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2442 pa_source_assert_ref(s);
2443 pa_assert_ctl_context();
2445 if (PA_SOURCE_IS_LINKED(s->state))
2446 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2448 pa_source_set_max_rewind_within_thread(s, max_rewind);
2451 /* Called from IO thread */
2452 void pa_source_invalidate_requested_latency(pa_source *s, bool dynamic) {
2453 pa_source_output *o;
2456 pa_source_assert_ref(s);
2457 pa_source_assert_io_context(s);
2459 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2460 s->thread_info.requested_latency_valid = false;
2464 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2466 if (s->update_requested_latency)
2467 s->update_requested_latency(s);
2469 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2470 if (o->update_source_requested_latency)
2471 o->update_source_requested_latency(o);
2475 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2478 /* Called from main thread */
2479 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2480 pa_source_assert_ref(s);
2481 pa_assert_ctl_context();
2483 /* min_latency == 0: no limit
2484 * min_latency anything else: specified limit
2486 * Similar for max_latency */
2488 if (min_latency < ABSOLUTE_MIN_LATENCY)
2489 min_latency = ABSOLUTE_MIN_LATENCY;
2491 if (max_latency <= 0 ||
2492 max_latency > ABSOLUTE_MAX_LATENCY)
2493 max_latency = ABSOLUTE_MAX_LATENCY;
2495 pa_assert(min_latency <= max_latency);
2497 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2498 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2499 max_latency == ABSOLUTE_MAX_LATENCY) ||
2500 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2502 if (PA_SOURCE_IS_LINKED(s->state)) {
2508 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2510 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2513 /* Called from main thread */
2514 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2515 pa_source_assert_ref(s);
2516 pa_assert_ctl_context();
2517 pa_assert(min_latency);
2518 pa_assert(max_latency);
2520 if (PA_SOURCE_IS_LINKED(s->state)) {
2521 pa_usec_t r[2] = { 0, 0 };
2523 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2525 *min_latency = r[0];
2526 *max_latency = r[1];
2528 *min_latency = s->thread_info.min_latency;
2529 *max_latency = s->thread_info.max_latency;
2533 /* Called from IO thread, and from main thread before pa_source_put() is called */
2534 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2535 pa_source_assert_ref(s);
2536 pa_source_assert_io_context(s);
2538 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2539 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2540 pa_assert(min_latency <= max_latency);
2542 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2543 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2544 max_latency == ABSOLUTE_MAX_LATENCY) ||
2545 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2548 if (s->thread_info.min_latency == min_latency &&
2549 s->thread_info.max_latency == max_latency)
2552 s->thread_info.min_latency = min_latency;
2553 s->thread_info.max_latency = max_latency;
2555 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2556 pa_source_output *o;
2559 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2560 if (o->update_source_latency_range)
2561 o->update_source_latency_range(o);
2564 pa_source_invalidate_requested_latency(s, false);
2567 /* Called from main thread, before the source is put */
2568 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2569 pa_source_assert_ref(s);
2570 pa_assert_ctl_context();
2572 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2573 pa_assert(latency == 0);
2577 if (latency < ABSOLUTE_MIN_LATENCY)
2578 latency = ABSOLUTE_MIN_LATENCY;
2580 if (latency > ABSOLUTE_MAX_LATENCY)
2581 latency = ABSOLUTE_MAX_LATENCY;
2583 if (PA_SOURCE_IS_LINKED(s->state))
2584 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2586 s->thread_info.fixed_latency = latency;
2589 /* Called from main thread */
2590 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2593 pa_source_assert_ref(s);
2594 pa_assert_ctl_context();
2596 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2599 if (PA_SOURCE_IS_LINKED(s->state))
2600 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2602 latency = s->thread_info.fixed_latency;
2607 /* Called from IO thread */
2608 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2609 pa_source_assert_ref(s);
2610 pa_source_assert_io_context(s);
2612 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2613 pa_assert(latency == 0);
2614 s->thread_info.fixed_latency = 0;
2619 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2620 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2622 if (s->thread_info.fixed_latency == latency)
2625 s->thread_info.fixed_latency = latency;
2627 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2628 pa_source_output *o;
2631 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2632 if (o->update_source_fixed_latency)
2633 o->update_source_fixed_latency(o);
2636 pa_source_invalidate_requested_latency(s, false);
2639 /* Called from main thread */
2640 void pa_source_set_port_latency_offset(pa_source *s, int64_t offset) {
2641 pa_source_assert_ref(s);
2643 s->port_latency_offset = offset;
2645 if (PA_SOURCE_IS_LINKED(s->state))
2646 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT_LATENCY_OFFSET, NULL, offset, NULL) == 0);
2648 s->thread_info.port_latency_offset = offset;
2650 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_LATENCY_OFFSET_CHANGED], s);
2653 /* Called from main thread */
2654 size_t pa_source_get_max_rewind(pa_source *s) {
2656 pa_assert_ctl_context();
2657 pa_source_assert_ref(s);
2659 if (!PA_SOURCE_IS_LINKED(s->state))
2660 return s->thread_info.max_rewind;
2662 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2667 /* Called from main context */
2668 int pa_source_set_port(pa_source *s, const char *name, bool save) {
2669 pa_device_port *port;
2671 pa_source_assert_ref(s);
2672 pa_assert_ctl_context();
2675 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2676 return -PA_ERR_NOTIMPLEMENTED;
2680 return -PA_ERR_NOENTITY;
2682 if (!(port = pa_hashmap_get(s->ports, name)))
2683 return -PA_ERR_NOENTITY;
2685 if (s->active_port == port) {
2686 s->save_port = s->save_port || save;
2690 if (s->set_port(s, port) < 0)
2691 return -PA_ERR_NOENTITY;
2693 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2695 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2697 s->active_port = port;
2698 s->save_port = save;
2700 /* The active port affects the default source selection. */
2701 pa_core_update_default_source(s->core);
2703 pa_source_set_port_latency_offset(s, s->active_port->latency_offset);
2705 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2710 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2712 /* Called from the IO thread. */
2713 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2714 pa_source_volume_change *c;
2715 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2716 c = pa_xnew(pa_source_volume_change, 1);
2718 PA_LLIST_INIT(pa_source_volume_change, c);
2720 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2724 /* Called from the IO thread. */
2725 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2727 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2731 /* Called from the IO thread. */
2732 void pa_source_volume_change_push(pa_source *s) {
2733 pa_source_volume_change *c = NULL;
2734 pa_source_volume_change *nc = NULL;
2735 pa_source_volume_change *pc = NULL;
2736 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2738 const char *direction = NULL;
2741 nc = pa_source_volume_change_new(s);
2743 /* NOTE: There is already more different volumes in pa_source that I can remember.
2744 * Adding one more volume for HW would get us rid of this, but I am trying
2745 * to survive with the ones we already have. */
2746 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2748 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2749 pa_log_debug("Volume not changing");
2750 pa_source_volume_change_free(nc);
2754 nc->at = pa_source_get_latency_within_thread(s, false);
2755 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2757 if (s->thread_info.volume_changes_tail) {
2758 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2759 /* If volume is going up let's do it a bit late. If it is going
2760 * down let's do it a bit early. */
2761 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2762 if (nc->at + safety_margin > c->at) {
2763 nc->at += safety_margin;
2768 else if (nc->at - safety_margin > c->at) {
2769 nc->at -= safety_margin;
2777 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2778 nc->at += safety_margin;
2781 nc->at -= safety_margin;
2784 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2787 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2790 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2792 /* We can ignore volume events that came earlier but should happen later than this. */
2793 PA_LLIST_FOREACH_SAFE(c, pc, nc->next) {
2794 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2795 pa_source_volume_change_free(c);
2798 s->thread_info.volume_changes_tail = nc;
2801 /* Called from the IO thread. */
2802 static void pa_source_volume_change_flush(pa_source *s) {
2803 pa_source_volume_change *c = s->thread_info.volume_changes;
2805 s->thread_info.volume_changes = NULL;
2806 s->thread_info.volume_changes_tail = NULL;
2808 pa_source_volume_change *next = c->next;
2809 pa_source_volume_change_free(c);
2814 /* Called from the IO thread. */
2815 bool pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2821 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2827 pa_assert(s->write_volume);
2829 now = pa_rtclock_now();
2831 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2832 pa_source_volume_change *c = s->thread_info.volume_changes;
2833 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2834 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2835 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2837 s->thread_info.current_hw_volume = c->hw_volume;
2838 pa_source_volume_change_free(c);
2844 if (s->thread_info.volume_changes) {
2846 *usec_to_next = s->thread_info.volume_changes->at - now;
2847 if (pa_log_ratelimit(PA_LOG_DEBUG))
2848 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2853 s->thread_info.volume_changes_tail = NULL;
2858 /* Called from the main thread */
2859 /* Gets the list of formats supported by the source. The members and idxset must
2860 * be freed by the caller. */
2861 pa_idxset* pa_source_get_formats(pa_source *s) {
2866 if (s->get_formats) {
2867 /* Source supports format query, all is good */
2868 ret = s->get_formats(s);
2870 /* Source doesn't support format query, so assume it does PCM */
2871 pa_format_info *f = pa_format_info_new();
2872 f->encoding = PA_ENCODING_PCM;
2874 ret = pa_idxset_new(NULL, NULL);
2875 pa_idxset_put(ret, f, NULL);
2881 /* Called from the main thread */
2882 /* Checks if the source can accept this format */
2883 bool pa_source_check_format(pa_source *s, pa_format_info *f) {
2884 pa_idxset *formats = NULL;
2890 formats = pa_source_get_formats(s);
2893 pa_format_info *finfo_device;
2896 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2897 if (pa_format_info_is_compatible(finfo_device, f)) {
2903 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
2909 /* Called from the main thread */
2910 /* Calculates the intersection between formats supported by the source and
2911 * in_formats, and returns these, in the order of the source's formats. */
2912 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2913 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2914 pa_format_info *f_source, *f_in;
2919 if (!in_formats || pa_idxset_isempty(in_formats))
2922 source_formats = pa_source_get_formats(s);
2924 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2925 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2926 if (pa_format_info_is_compatible(f_source, f_in))
2927 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2933 pa_idxset_free(source_formats, (pa_free_cb_t) pa_format_info_free);
2938 /* Called from the main thread. */
2939 void pa_source_set_reference_volume_direct(pa_source *s, const pa_cvolume *volume) {
2940 pa_cvolume old_volume;
2941 char old_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
2942 char new_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
2947 old_volume = s->reference_volume;
2949 if (pa_cvolume_equal(volume, &old_volume))
2952 s->reference_volume = *volume;
2953 pa_log_debug("The reference volume of source %s changed from %s to %s.", s->name,
2954 pa_cvolume_snprint_verbose(old_volume_str, sizeof(old_volume_str), &old_volume, &s->channel_map,
2955 s->flags & PA_SOURCE_DECIBEL_VOLUME),
2956 pa_cvolume_snprint_verbose(new_volume_str, sizeof(new_volume_str), volume, &s->channel_map,
2957 s->flags & PA_SOURCE_DECIBEL_VOLUME));
2959 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2960 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_VOLUME_CHANGED], s);