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 source_message_set_port {
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) {
145 s->get_volume = NULL;
146 s->set_volume = NULL;
147 s->write_volume = NULL;
150 s->update_requested_latency = NULL;
152 s->get_formats = NULL;
153 s->update_rate = NULL;
156 /* Called from main context */
157 pa_source* pa_source_new(
159 pa_source_new_data *data,
160 pa_source_flags_t flags) {
164 char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
169 pa_assert(data->name);
170 pa_assert_ctl_context();
172 s = pa_msgobject_new(pa_source);
174 if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
175 pa_log_debug("Failed to register name %s.", data->name);
180 pa_source_new_data_set_name(data, name);
182 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
184 pa_namereg_unregister(core, name);
188 /* FIXME, need to free s here on failure */
190 pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
191 pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
193 pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
195 if (!data->channel_map_is_set)
196 pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
198 pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
199 pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
201 /* FIXME: There should probably be a general function for checking whether
202 * the source volume is allowed to be set, like there is for source outputs. */
203 pa_assert(!data->volume_is_set || !(flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
205 if (!data->volume_is_set) {
206 pa_cvolume_reset(&data->volume, data->sample_spec.channels);
207 data->save_volume = false;
210 pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
211 pa_return_null_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec));
213 if (!data->muted_is_set)
217 pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
219 pa_device_init_description(data->proplist, data->card);
220 pa_device_init_icon(data->proplist, false);
221 pa_device_init_intended_roles(data->proplist);
223 if (!data->active_port) {
224 pa_device_port *p = pa_device_port_find_best(data->ports);
226 pa_source_new_data_set_port(data, p->name);
229 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
231 pa_namereg_unregister(core, name);
235 s->parent.parent.free = source_free;
236 s->parent.process_msg = pa_source_process_msg;
239 s->state = PA_SOURCE_INIT;
242 s->suspend_cause = data->suspend_cause;
243 pa_source_set_mixer_dirty(s, false);
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 if (s->sample_spec.rate == s->alternate_sample_rate) {
262 pa_log_warn("Default and alternate sample rates are the same.");
263 s->alternate_sample_rate = 0;
266 s->outputs = pa_idxset_new(NULL, NULL);
268 s->monitor_of = NULL;
269 s->output_from_master = NULL;
271 s->reference_volume = s->real_volume = data->volume;
272 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
273 s->base_volume = PA_VOLUME_NORM;
274 s->n_volume_steps = PA_VOLUME_NORM+1;
275 s->muted = data->muted;
276 s->refresh_volume = s->refresh_muted = false;
283 /* As a minor optimization we just steal the list instead of
285 s->ports = data->ports;
288 s->active_port = NULL;
289 s->save_port = false;
291 if (data->active_port)
292 if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
293 s->save_port = data->save_port;
295 /* Hopefully the active port has already been assigned in the previous call
296 to pa_device_port_find_best, but better safe than sorry */
298 s->active_port = pa_device_port_find_best(s->ports);
301 s->port_latency_offset = s->active_port->latency_offset;
303 s->port_latency_offset = 0;
305 s->save_volume = data->save_volume;
306 s->save_muted = data->save_muted;
308 pa_silence_memchunk_get(
309 &core->silence_cache,
315 s->thread_info.rtpoll = NULL;
316 s->thread_info.outputs = pa_hashmap_new_full(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func, NULL,
317 (pa_free_cb_t) pa_source_output_unref);
318 s->thread_info.soft_volume = s->soft_volume;
319 s->thread_info.soft_muted = s->muted;
320 s->thread_info.state = s->state;
321 s->thread_info.max_rewind = 0;
322 s->thread_info.requested_latency_valid = false;
323 s->thread_info.requested_latency = 0;
324 s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
325 s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
326 s->thread_info.fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
328 PA_LLIST_HEAD_INIT(pa_source_volume_change, s->thread_info.volume_changes);
329 s->thread_info.volume_changes_tail = NULL;
330 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
331 s->thread_info.volume_change_safety_margin = core->deferred_volume_safety_margin_usec;
332 s->thread_info.volume_change_extra_delay = core->deferred_volume_extra_delay_usec;
333 s->thread_info.port_latency_offset = s->port_latency_offset;
335 /* FIXME: This should probably be moved to pa_source_put() */
336 pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
339 pa_assert_se(pa_idxset_put(s->card->sources, s, NULL) >= 0);
341 pt = pa_proplist_to_string_sep(s->proplist, "\n ");
342 pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s\n %s",
345 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
346 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
353 /* Called from main context */
354 static int source_set_state(pa_source *s, pa_source_state_t state) {
357 pa_source_state_t original_state;
360 pa_assert_ctl_context();
362 if (s->state == state)
365 original_state = s->state;
368 (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
369 (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
372 if ((ret = s->set_state(s, state)) < 0)
376 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
379 s->set_state(s, original_state);
386 if (state != PA_SOURCE_UNLINKED) { /* if we enter UNLINKED state pa_source_unlink() will fire the appropriate events */
387 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
388 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
391 if (suspend_change) {
395 /* We're suspending or resuming, tell everyone about it */
397 PA_IDXSET_FOREACH(o, s->outputs, idx)
398 if (s->state == PA_SOURCE_SUSPENDED &&
399 (o->flags & PA_SOURCE_OUTPUT_KILL_ON_SUSPEND))
400 pa_source_output_kill(o);
402 o->suspend(o, state == PA_SOURCE_SUSPENDED);
408 void pa_source_set_get_volume_callback(pa_source *s, pa_source_cb_t cb) {
414 void pa_source_set_set_volume_callback(pa_source *s, pa_source_cb_t cb) {
415 pa_source_flags_t flags;
418 pa_assert(!s->write_volume || cb);
422 /* Save the current flags so we can tell if they've changed */
426 /* The source implementor is responsible for setting decibel volume support */
427 s->flags |= PA_SOURCE_HW_VOLUME_CTRL;
429 s->flags &= ~PA_SOURCE_HW_VOLUME_CTRL;
430 /* See note below in pa_source_put() about volume sharing and decibel volumes */
431 pa_source_enable_decibel_volume(s, !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
434 /* If the flags have changed after init, let any clients know via a change event */
435 if (s->state != PA_SOURCE_INIT && flags != s->flags)
436 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
439 void pa_source_set_write_volume_callback(pa_source *s, pa_source_cb_t cb) {
440 pa_source_flags_t flags;
443 pa_assert(!cb || s->set_volume);
445 s->write_volume = cb;
447 /* Save the current flags so we can tell if they've changed */
451 s->flags |= PA_SOURCE_DEFERRED_VOLUME;
453 s->flags &= ~PA_SOURCE_DEFERRED_VOLUME;
455 /* If the flags have changed after init, let any clients know via a change event */
456 if (s->state != PA_SOURCE_INIT && flags != s->flags)
457 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
460 void pa_source_set_get_mute_callback(pa_source *s, pa_source_get_mute_cb_t cb) {
466 void pa_source_set_set_mute_callback(pa_source *s, pa_source_cb_t cb) {
467 pa_source_flags_t flags;
473 /* Save the current flags so we can tell if they've changed */
477 s->flags |= PA_SOURCE_HW_MUTE_CTRL;
479 s->flags &= ~PA_SOURCE_HW_MUTE_CTRL;
481 /* If the flags have changed after init, let any clients know via a change event */
482 if (s->state != PA_SOURCE_INIT && flags != s->flags)
483 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
486 static void enable_flat_volume(pa_source *s, bool enable) {
487 pa_source_flags_t flags;
491 /* Always follow the overall user preference here */
492 enable = enable && s->core->flat_volumes;
494 /* Save the current flags so we can tell if they've changed */
498 s->flags |= PA_SOURCE_FLAT_VOLUME;
500 s->flags &= ~PA_SOURCE_FLAT_VOLUME;
502 /* If the flags have changed after init, let any clients know via a change event */
503 if (s->state != PA_SOURCE_INIT && flags != s->flags)
504 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
507 void pa_source_enable_decibel_volume(pa_source *s, bool enable) {
508 pa_source_flags_t flags;
512 /* Save the current flags so we can tell if they've changed */
516 s->flags |= PA_SOURCE_DECIBEL_VOLUME;
517 enable_flat_volume(s, true);
519 s->flags &= ~PA_SOURCE_DECIBEL_VOLUME;
520 enable_flat_volume(s, false);
523 /* If the flags have changed after init, let any clients know via a change event */
524 if (s->state != PA_SOURCE_INIT && flags != s->flags)
525 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
528 /* Called from main context */
529 void pa_source_put(pa_source *s) {
530 pa_source_assert_ref(s);
531 pa_assert_ctl_context();
533 pa_assert(s->state == PA_SOURCE_INIT);
534 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || pa_source_is_filter(s));
536 /* The following fields must be initialized properly when calling _put() */
537 pa_assert(s->asyncmsgq);
538 pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
540 /* Generally, flags should be initialized via pa_source_new(). As a
541 * special exception we allow some volume related flags to be set
542 * between _new() and _put() by the callback setter functions above.
544 * Thus we implement a couple safeguards here which ensure the above
545 * setters were used (or at least the implementor made manual changes
546 * in a compatible way).
548 * Note: All of these flags set here can change over the life time
550 pa_assert(!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) || s->set_volume);
551 pa_assert(!(s->flags & PA_SOURCE_DEFERRED_VOLUME) || s->write_volume);
552 pa_assert(!(s->flags & PA_SOURCE_HW_MUTE_CTRL) || s->set_mute);
554 /* XXX: Currently decibel volume is disabled for all sources that use volume
555 * sharing. When the master source supports decibel volume, it would be good
556 * to have the flag also in the filter source, but currently we don't do that
557 * so that the flags of the filter source never change when it's moved from
558 * a master source to another. One solution for this problem would be to
559 * remove user-visible volume altogether from filter sources when volume
560 * sharing is used, but the current approach was easier to implement... */
561 /* We always support decibel volumes in software, otherwise we leave it to
562 * the source implementor to set this flag as needed.
564 * Note: This flag can also change over the life time of the source. */
565 if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
566 pa_source_enable_decibel_volume(s, true);
567 s->soft_volume = s->reference_volume;
570 /* If the source implementor support DB volumes by itself, we should always
571 * try and enable flat volumes too */
572 if ((s->flags & PA_SOURCE_DECIBEL_VOLUME))
573 enable_flat_volume(s, true);
575 if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
576 pa_source *root_source = pa_source_get_master(s);
578 pa_assert(PA_LIKELY(root_source));
580 s->reference_volume = root_source->reference_volume;
581 pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
583 s->real_volume = root_source->real_volume;
584 pa_cvolume_remap(&s->real_volume, &root_source->channel_map, &s->channel_map);
586 /* We assume that if the sink implementor changed the default
587 * volume he did so in real_volume, because that is the usual
588 * place where he is supposed to place his changes. */
589 s->reference_volume = s->real_volume;
591 s->thread_info.soft_volume = s->soft_volume;
592 s->thread_info.soft_muted = s->muted;
593 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
595 pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL)
596 || (s->base_volume == PA_VOLUME_NORM
597 && ((s->flags & PA_SOURCE_DECIBEL_VOLUME || (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)))));
598 pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
599 pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == !(s->thread_info.fixed_latency == 0));
601 if (s->suspend_cause)
602 pa_assert_se(source_set_state(s, PA_SOURCE_SUSPENDED) == 0);
604 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
606 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
607 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
609 /* This function must be called after the PA_CORE_HOOK_SOURCE_PUT hook,
610 * because module-switch-on-connect needs to know the old default source */
611 pa_core_update_default_source(s->core);
614 /* Called from main context */
615 void pa_source_unlink(pa_source *s) {
617 pa_source_output *o, PA_UNUSED *j = NULL;
619 pa_source_assert_ref(s);
620 pa_assert_ctl_context();
622 /* See pa_sink_unlink() for a couple of comments how this function
625 if (s->unlink_requested)
628 s->unlink_requested = true;
630 linked = PA_SOURCE_IS_LINKED(s->state);
633 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
635 if (s->state != PA_SOURCE_UNLINKED)
636 pa_namereg_unregister(s->core, s->name);
637 pa_idxset_remove_by_data(s->core->sources, s, NULL);
639 pa_core_update_default_source(s->core);
642 pa_idxset_remove_by_data(s->card->sources, s, NULL);
644 while ((o = pa_idxset_first(s->outputs, NULL))) {
646 pa_source_output_kill(o);
651 source_set_state(s, PA_SOURCE_UNLINKED);
653 s->state = PA_SOURCE_UNLINKED;
658 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
659 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
663 /* Called from main context */
664 static void source_free(pa_object *o) {
665 pa_source *s = PA_SOURCE(o);
668 pa_assert_ctl_context();
669 pa_assert(pa_source_refcnt(s) == 0);
670 pa_assert(!PA_SOURCE_IS_LINKED(s->state));
672 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
674 pa_source_volume_change_flush(s);
676 pa_idxset_free(s->outputs, NULL);
677 pa_hashmap_free(s->thread_info.outputs);
679 if (s->silence.memblock)
680 pa_memblock_unref(s->silence.memblock);
686 pa_proplist_free(s->proplist);
689 pa_hashmap_free(s->ports);
694 /* Called from main context, and not while the IO thread is active, please */
695 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
696 pa_source_assert_ref(s);
697 pa_assert_ctl_context();
702 /* Called from main context, and not while the IO thread is active, please */
703 void pa_source_update_flags(pa_source *s, pa_source_flags_t mask, pa_source_flags_t value) {
704 pa_source_flags_t old_flags;
705 pa_source_output *output;
708 pa_source_assert_ref(s);
709 pa_assert_ctl_context();
711 /* For now, allow only a minimal set of flags to be changed. */
712 pa_assert((mask & ~(PA_SOURCE_DYNAMIC_LATENCY|PA_SOURCE_LATENCY)) == 0);
714 old_flags = s->flags;
715 s->flags = (s->flags & ~mask) | (value & mask);
717 if (s->flags == old_flags)
720 if ((s->flags & PA_SOURCE_LATENCY) != (old_flags & PA_SOURCE_LATENCY))
721 pa_log_debug("Source %s: LATENCY flag %s.", s->name, (s->flags & PA_SOURCE_LATENCY) ? "enabled" : "disabled");
723 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY) != (old_flags & PA_SOURCE_DYNAMIC_LATENCY))
724 pa_log_debug("Source %s: DYNAMIC_LATENCY flag %s.",
725 s->name, (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ? "enabled" : "disabled");
727 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
728 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_FLAGS_CHANGED], s);
730 PA_IDXSET_FOREACH(output, s->outputs, idx) {
731 if (output->destination_source)
732 pa_source_update_flags(output->destination_source, mask, value);
736 /* Called from IO context, or before _put() from main context */
737 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
738 pa_source_assert_ref(s);
739 pa_source_assert_io_context(s);
741 s->thread_info.rtpoll = p;
744 /* Called from main context */
745 int pa_source_update_status(pa_source*s) {
746 pa_source_assert_ref(s);
747 pa_assert_ctl_context();
748 pa_assert(PA_SOURCE_IS_LINKED(s->state));
750 if (s->state == PA_SOURCE_SUSPENDED)
753 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
756 /* Called from any context - must be threadsafe */
757 void pa_source_set_mixer_dirty(pa_source *s, bool is_dirty) {
758 pa_atomic_store(&s->mixer_dirty, is_dirty ? 1 : 0);
761 /* Called from main context */
762 int pa_source_suspend(pa_source *s, bool suspend, pa_suspend_cause_t cause) {
763 pa_source_assert_ref(s);
764 pa_assert_ctl_context();
765 pa_assert(PA_SOURCE_IS_LINKED(s->state));
766 pa_assert(cause != 0);
768 if (s->monitor_of && cause != PA_SUSPEND_PASSTHROUGH)
769 return -PA_ERR_NOTSUPPORTED;
772 s->suspend_cause |= cause;
774 s->suspend_cause &= ~cause;
776 if (!(s->suspend_cause & PA_SUSPEND_SESSION) && (pa_atomic_load(&s->mixer_dirty) != 0)) {
777 /* This might look racy but isn't: If somebody sets mixer_dirty exactly here,
778 it'll be handled just fine. */
779 pa_source_set_mixer_dirty(s, false);
780 pa_log_debug("Mixer is now accessible. Updating alsa mixer settings.");
781 if (s->active_port && s->set_port) {
782 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
783 struct source_message_set_port msg = { .port = s->active_port, .ret = 0 };
784 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
787 s->set_port(s, s->active_port);
797 if ((pa_source_get_state(s) == PA_SOURCE_SUSPENDED) == !!s->suspend_cause)
800 pa_log_debug("Suspend cause of source %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
802 if (s->suspend_cause)
803 return source_set_state(s, PA_SOURCE_SUSPENDED);
805 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
808 /* Called from main context */
809 int pa_source_sync_suspend(pa_source *s) {
810 pa_sink_state_t state;
812 pa_source_assert_ref(s);
813 pa_assert_ctl_context();
814 pa_assert(PA_SOURCE_IS_LINKED(s->state));
815 pa_assert(s->monitor_of);
817 state = pa_sink_get_state(s->monitor_of);
819 if (state == PA_SINK_SUSPENDED)
820 return source_set_state(s, PA_SOURCE_SUSPENDED);
822 pa_assert(PA_SINK_IS_OPENED(state));
824 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
827 /* Called from main context */
828 pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q) {
829 pa_source_output *o, *n;
832 pa_source_assert_ref(s);
833 pa_assert_ctl_context();
834 pa_assert(PA_SOURCE_IS_LINKED(s->state));
839 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = n) {
840 n = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx));
842 pa_source_output_ref(o);
844 if (pa_source_output_start_move(o) >= 0)
847 pa_source_output_unref(o);
853 /* Called from main context */
854 void pa_source_move_all_finish(pa_source *s, pa_queue *q, bool save) {
857 pa_source_assert_ref(s);
858 pa_assert_ctl_context();
859 pa_assert(PA_SOURCE_IS_LINKED(s->state));
862 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
863 if (pa_source_output_finish_move(o, s, save) < 0)
864 pa_source_output_fail_move(o);
866 pa_source_output_unref(o);
869 pa_queue_free(q, NULL);
872 /* Called from main context */
873 void pa_source_move_all_fail(pa_queue *q) {
876 pa_assert_ctl_context();
879 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
880 pa_source_output_fail_move(o);
881 pa_source_output_unref(o);
884 pa_queue_free(q, NULL);
887 /* Called from IO thread context */
888 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
892 pa_source_assert_ref(s);
893 pa_source_assert_io_context(s);
894 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
899 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
902 pa_log_debug("Processing rewind...");
904 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
905 pa_source_output_assert_ref(o);
906 pa_source_output_process_rewind(o, nbytes);
910 /* Called from IO thread context */
911 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
915 pa_source_assert_ref(s);
916 pa_source_assert_io_context(s);
917 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
920 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
923 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
924 pa_memchunk vchunk = *chunk;
926 pa_memblock_ref(vchunk.memblock);
927 pa_memchunk_make_writable(&vchunk, 0);
929 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
930 pa_silence_memchunk(&vchunk, &s->sample_spec);
932 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
934 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
935 pa_source_output_assert_ref(o);
937 if (!o->thread_info.direct_on_input)
938 pa_source_output_push(o, &vchunk);
941 pa_memblock_unref(vchunk.memblock);
944 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
945 pa_source_output_assert_ref(o);
947 if (!o->thread_info.direct_on_input)
948 pa_source_output_push(o, chunk);
953 /* Called from IO thread context */
954 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
955 pa_source_assert_ref(s);
956 pa_source_assert_io_context(s);
957 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
958 pa_source_output_assert_ref(o);
959 pa_assert(o->thread_info.direct_on_input);
962 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
965 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
966 pa_memchunk vchunk = *chunk;
968 pa_memblock_ref(vchunk.memblock);
969 pa_memchunk_make_writable(&vchunk, 0);
971 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
972 pa_silence_memchunk(&vchunk, &s->sample_spec);
974 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
976 pa_source_output_push(o, &vchunk);
978 pa_memblock_unref(vchunk.memblock);
980 pa_source_output_push(o, chunk);
983 /* Called from main thread */
984 int pa_source_update_rate(pa_source *s, uint32_t rate, bool passthrough) {
986 uint32_t desired_rate;
987 uint32_t default_rate = s->default_sample_rate;
988 uint32_t alternate_rate = s->alternate_sample_rate;
989 bool default_rate_is_usable = false;
990 bool alternate_rate_is_usable = false;
991 bool avoid_resampling = s->core->avoid_resampling;
993 if (rate == s->sample_spec.rate)
996 if (!s->update_rate && !s->monitor_of)
999 if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough && !avoid_resampling)) {
1000 pa_log_debug("Default and alternate sample rates are the same, so there is no point in switching.");
1004 if (PA_SOURCE_IS_RUNNING(s->state)) {
1005 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u Hz",
1006 s->sample_spec.rate);
1010 if (s->monitor_of) {
1011 if (PA_SINK_IS_RUNNING(s->monitor_of->state)) {
1012 pa_log_info("Cannot update rate, this is a monitor source and the sink is running.");
1017 if (PA_UNLIKELY(!pa_sample_rate_valid(rate)))
1021 /* We have to try to use the source output rate */
1022 desired_rate = rate;
1024 } else if (avoid_resampling && (rate >= default_rate || rate >= alternate_rate)) {
1025 /* We just try to set the source output's sample rate if it's not too low */
1026 desired_rate = rate;
1028 } else if (default_rate == rate || alternate_rate == rate) {
1029 /* We can directly try to use this rate */
1030 desired_rate = rate;
1033 /* See if we can pick a rate that results in less resampling effort */
1034 if (default_rate % 11025 == 0 && rate % 11025 == 0)
1035 default_rate_is_usable = true;
1036 if (default_rate % 4000 == 0 && rate % 4000 == 0)
1037 default_rate_is_usable = true;
1038 if (alternate_rate && alternate_rate % 11025 == 0 && rate % 11025 == 0)
1039 alternate_rate_is_usable = true;
1040 if (alternate_rate && alternate_rate % 4000 == 0 && rate % 4000 == 0)
1041 alternate_rate_is_usable = true;
1043 if (alternate_rate_is_usable && !default_rate_is_usable)
1044 desired_rate = alternate_rate;
1046 desired_rate = default_rate;
1049 if (desired_rate == s->sample_spec.rate)
1052 if (!passthrough && pa_source_used_by(s) > 0)
1055 pa_log_debug("Suspending source %s due to changing the sample rate.", s->name);
1056 pa_source_suspend(s, true, PA_SUSPEND_INTERNAL);
1059 ret = s->update_rate(s, desired_rate);
1061 /* This is a monitor source. */
1063 /* XXX: This code is written with non-passthrough streams in mind. I
1064 * have no idea whether the behaviour with passthrough streams is
1067 uint32_t old_rate = s->sample_spec.rate;
1069 s->sample_spec.rate = desired_rate;
1070 ret = pa_sink_update_rate(s->monitor_of, desired_rate, false);
1073 /* Changing the sink rate failed, roll back the old rate for
1074 * the monitor source. Why did we set the source rate before
1075 * calling pa_sink_update_rate(), you may ask. The reason is
1076 * that pa_sink_update_rate() tries to update the monitor
1077 * source rate, but we are already in the process of updating
1078 * the monitor source rate, so there's a risk of entering an
1079 * infinite loop. Setting the source rate before calling
1080 * pa_sink_update_rate() makes the rate == s->sample_spec.rate
1081 * check in the beginning of this function return early, so we
1083 s->sample_spec.rate = old_rate;
1091 pa_source_output *o;
1093 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1094 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1095 pa_source_output_update_rate(o);
1098 pa_log_info("Changed sampling rate successfully");
1101 pa_source_suspend(s, false, PA_SUSPEND_INTERNAL);
1106 /* Called from main thread */
1107 pa_usec_t pa_source_get_latency(pa_source *s) {
1110 pa_source_assert_ref(s);
1111 pa_assert_ctl_context();
1112 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1114 if (s->state == PA_SOURCE_SUSPENDED)
1117 if (!(s->flags & PA_SOURCE_LATENCY))
1120 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1122 /* The return value is unsigned, so check that the offset can be added to usec without
1124 if (-s->port_latency_offset <= usec)
1125 usec += s->port_latency_offset;
1129 return (pa_usec_t)usec;
1132 /* Called from IO thread */
1133 int64_t pa_source_get_latency_within_thread(pa_source *s, bool allow_negative) {
1137 pa_source_assert_ref(s);
1138 pa_source_assert_io_context(s);
1139 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1141 /* The returned value is supposed to be in the time domain of the sound card! */
1143 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1146 if (!(s->flags & PA_SOURCE_LATENCY))
1149 o = PA_MSGOBJECT(s);
1151 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1153 o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL);
1155 /* If allow_negative is false, the call should only return positive values, */
1156 usec += s->thread_info.port_latency_offset;
1157 if (!allow_negative && usec < 0)
1163 /* Called from the main thread (and also from the IO thread while the main
1164 * thread is waiting).
1166 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1167 * set. Instead, flat volume mode is detected by checking whether the root source
1168 * has the flag set. */
1169 bool pa_source_flat_volume_enabled(pa_source *s) {
1170 pa_source_assert_ref(s);
1172 s = pa_source_get_master(s);
1175 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1180 /* Called from the main thread (and also from the IO thread while the main
1181 * thread is waiting). */
1182 pa_source *pa_source_get_master(pa_source *s) {
1183 pa_source_assert_ref(s);
1185 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1186 if (PA_UNLIKELY(!s->output_from_master))
1189 s = s->output_from_master->source;
1195 /* Called from main context */
1196 bool pa_source_is_filter(pa_source *s) {
1197 pa_source_assert_ref(s);
1199 return (s->output_from_master != NULL);
1202 /* Called from main context */
1203 bool pa_source_is_passthrough(pa_source *s) {
1205 pa_source_assert_ref(s);
1207 /* NB Currently only monitor sources support passthrough mode */
1208 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1211 /* Called from main context */
1212 void pa_source_enter_passthrough(pa_source *s) {
1215 /* set the volume to NORM */
1216 s->saved_volume = *pa_source_get_volume(s, true);
1217 s->saved_save_volume = s->save_volume;
1219 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1220 pa_source_set_volume(s, &volume, true, false);
1223 /* Called from main context */
1224 void pa_source_leave_passthrough(pa_source *s) {
1225 /* Restore source volume to what it was before we entered passthrough mode */
1226 pa_source_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
1228 pa_cvolume_init(&s->saved_volume);
1229 s->saved_save_volume = false;
1232 /* Called from main context. */
1233 static void compute_reference_ratio(pa_source_output *o) {
1235 pa_cvolume remapped;
1239 pa_assert(pa_source_flat_volume_enabled(o->source));
1242 * Calculates the reference ratio from the source's reference
1243 * volume. This basically calculates:
1245 * o->reference_ratio = o->volume / o->source->reference_volume
1248 remapped = o->source->reference_volume;
1249 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1251 ratio = o->reference_ratio;
1253 for (c = 0; c < o->sample_spec.channels; c++) {
1255 /* We don't update when the source volume is 0 anyway */
1256 if (remapped.values[c] <= PA_VOLUME_MUTED)
1259 /* Don't update the reference ratio unless necessary */
1260 if (pa_sw_volume_multiply(
1262 remapped.values[c]) == o->volume.values[c])
1265 ratio.values[c] = pa_sw_volume_divide(
1266 o->volume.values[c],
1267 remapped.values[c]);
1270 pa_source_output_set_reference_ratio(o, &ratio);
1273 /* Called from main context. Only called for the root source in volume sharing
1274 * cases, except for internal recursive calls. */
1275 static void compute_reference_ratios(pa_source *s) {
1277 pa_source_output *o;
1279 pa_source_assert_ref(s);
1280 pa_assert_ctl_context();
1281 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1282 pa_assert(pa_source_flat_volume_enabled(s));
1284 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1285 compute_reference_ratio(o);
1287 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
1288 && PA_SOURCE_IS_LINKED(o->destination_source->state))
1289 compute_reference_ratios(o->destination_source);
1293 /* Called from main context. Only called for the root source in volume sharing
1294 * cases, except for internal recursive calls. */
1295 static void compute_real_ratios(pa_source *s) {
1296 pa_source_output *o;
1299 pa_source_assert_ref(s);
1300 pa_assert_ctl_context();
1301 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1302 pa_assert(pa_source_flat_volume_enabled(s));
1304 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1306 pa_cvolume remapped;
1308 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1309 /* The origin source uses volume sharing, so this input's real ratio
1310 * is handled as a special case - the real ratio must be 0 dB, and
1311 * as a result i->soft_volume must equal i->volume_factor. */
1312 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1313 o->soft_volume = o->volume_factor;
1315 if (PA_SOURCE_IS_LINKED(o->destination_source->state))
1316 compute_real_ratios(o->destination_source);
1322 * This basically calculates:
1324 * i->real_ratio := i->volume / s->real_volume
1325 * i->soft_volume := i->real_ratio * i->volume_factor
1328 remapped = s->real_volume;
1329 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1331 o->real_ratio.channels = o->sample_spec.channels;
1332 o->soft_volume.channels = o->sample_spec.channels;
1334 for (c = 0; c < o->sample_spec.channels; c++) {
1336 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1337 /* We leave o->real_ratio untouched */
1338 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1342 /* Don't lose accuracy unless necessary */
1343 if (pa_sw_volume_multiply(
1344 o->real_ratio.values[c],
1345 remapped.values[c]) != o->volume.values[c])
1347 o->real_ratio.values[c] = pa_sw_volume_divide(
1348 o->volume.values[c],
1349 remapped.values[c]);
1351 o->soft_volume.values[c] = pa_sw_volume_multiply(
1352 o->real_ratio.values[c],
1353 o->volume_factor.values[c]);
1356 /* We don't copy the soft_volume to the thread_info data
1357 * here. That must be done by the caller */
1361 static pa_cvolume *cvolume_remap_minimal_impact(
1363 const pa_cvolume *template,
1364 const pa_channel_map *from,
1365 const pa_channel_map *to) {
1370 pa_assert(template);
1373 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1374 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1376 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1377 * mapping from source output to source volumes:
1379 * If template is a possible remapping from v it is used instead
1380 * of remapping anew.
1382 * If the channel maps don't match we set an all-channel volume on
1383 * the source to ensure that changing a volume on one stream has no
1384 * effect that cannot be compensated for in another stream that
1385 * does not have the same channel map as the source. */
1387 if (pa_channel_map_equal(from, to))
1391 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1396 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1400 /* Called from main thread. Only called for the root source in volume sharing
1401 * cases, except for internal recursive calls. */
1402 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1403 pa_source_output *o;
1406 pa_source_assert_ref(s);
1407 pa_assert(max_volume);
1408 pa_assert(channel_map);
1409 pa_assert(pa_source_flat_volume_enabled(s));
1411 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1412 pa_cvolume remapped;
1414 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1415 if (PA_SOURCE_IS_LINKED(o->destination_source->state))
1416 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1418 /* Ignore this output. The origin source uses volume sharing, so this
1419 * output's volume will be set to be equal to the root source's real
1420 * volume. Obviously this output's current volume must not then
1421 * affect what the root source's real volume will be. */
1425 remapped = o->volume;
1426 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1427 pa_cvolume_merge(max_volume, max_volume, &remapped);
1431 /* Called from main thread. Only called for the root source in volume sharing
1432 * cases, except for internal recursive calls. */
1433 static bool has_outputs(pa_source *s) {
1434 pa_source_output *o;
1437 pa_source_assert_ref(s);
1439 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1440 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1447 /* Called from main thread. Only called for the root source in volume sharing
1448 * cases, except for internal recursive calls. */
1449 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1450 pa_source_output *o;
1453 pa_source_assert_ref(s);
1454 pa_assert(new_volume);
1455 pa_assert(channel_map);
1457 s->real_volume = *new_volume;
1458 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1460 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1461 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1462 if (pa_source_flat_volume_enabled(s)) {
1463 pa_cvolume new_output_volume;
1465 /* Follow the root source's real volume. */
1466 new_output_volume = *new_volume;
1467 pa_cvolume_remap(&new_output_volume, channel_map, &o->channel_map);
1468 pa_source_output_set_volume_direct(o, &new_output_volume);
1469 compute_reference_ratio(o);
1472 if (PA_SOURCE_IS_LINKED(o->destination_source->state))
1473 update_real_volume(o->destination_source, new_volume, channel_map);
1478 /* Called from main thread. Only called for the root source in shared volume
1480 static void compute_real_volume(pa_source *s) {
1481 pa_source_assert_ref(s);
1482 pa_assert_ctl_context();
1483 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1484 pa_assert(pa_source_flat_volume_enabled(s));
1485 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1487 /* This determines the maximum volume of all streams and sets
1488 * s->real_volume accordingly. */
1490 if (!has_outputs(s)) {
1491 /* In the special case that we have no source outputs we leave the
1492 * volume unmodified. */
1493 update_real_volume(s, &s->reference_volume, &s->channel_map);
1497 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1499 /* First let's determine the new maximum volume of all outputs
1500 * connected to this source */
1501 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1502 update_real_volume(s, &s->real_volume, &s->channel_map);
1504 /* Then, let's update the real ratios/soft volumes of all outputs
1505 * connected to this source */
1506 compute_real_ratios(s);
1509 /* Called from main thread. Only called for the root source in shared volume
1510 * cases, except for internal recursive calls. */
1511 static void propagate_reference_volume(pa_source *s) {
1512 pa_source_output *o;
1515 pa_source_assert_ref(s);
1516 pa_assert_ctl_context();
1517 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1518 pa_assert(pa_source_flat_volume_enabled(s));
1520 /* This is called whenever the source volume changes that is not
1521 * caused by a source output volume change. We need to fix up the
1522 * source output volumes accordingly */
1524 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1525 pa_cvolume new_volume;
1527 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1528 if (PA_SOURCE_IS_LINKED(o->destination_source->state))
1529 propagate_reference_volume(o->destination_source);
1531 /* Since the origin source uses volume sharing, this output's volume
1532 * needs to be updated to match the root source's real volume, but
1533 * that will be done later in update_real_volume(). */
1537 /* This basically calculates:
1539 * o->volume := o->reference_volume * o->reference_ratio */
1541 new_volume = s->reference_volume;
1542 pa_cvolume_remap(&new_volume, &s->channel_map, &o->channel_map);
1543 pa_sw_cvolume_multiply(&new_volume, &new_volume, &o->reference_ratio);
1544 pa_source_output_set_volume_direct(o, &new_volume);
1548 /* Called from main thread. Only called for the root source in volume sharing
1549 * cases, except for internal recursive calls. The return value indicates
1550 * whether any reference volume actually changed. */
1551 static bool update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
1553 bool reference_volume_changed;
1554 pa_source_output *o;
1557 pa_source_assert_ref(s);
1558 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1560 pa_assert(channel_map);
1561 pa_assert(pa_cvolume_valid(v));
1564 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1566 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1567 pa_source_set_reference_volume_direct(s, &volume);
1569 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1571 if (!reference_volume_changed && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1572 /* If the root source's volume doesn't change, then there can't be any
1573 * changes in the other source in the source tree either.
1575 * It's probably theoretically possible that even if the root source's
1576 * volume changes slightly, some filter source doesn't change its volume
1577 * due to rounding errors. If that happens, we still want to propagate
1578 * the changed root source volume to the sources connected to the
1579 * intermediate source that didn't change its volume. This theoretical
1580 * possibility is the reason why we have that !(s->flags &
1581 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1582 * notice even if we returned here false always if
1583 * reference_volume_changed is false. */
1586 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1587 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
1588 && PA_SOURCE_IS_LINKED(o->destination_source->state))
1589 update_reference_volume(o->destination_source, v, channel_map, false);
1595 /* Called from main thread */
1596 void pa_source_set_volume(
1598 const pa_cvolume *volume,
1602 pa_cvolume new_reference_volume, root_real_volume;
1603 pa_source *root_source;
1605 pa_source_assert_ref(s);
1606 pa_assert_ctl_context();
1607 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1608 pa_assert(!volume || pa_cvolume_valid(volume));
1609 pa_assert(volume || pa_source_flat_volume_enabled(s));
1610 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1612 /* make sure we don't change the volume in PASSTHROUGH mode ...
1613 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1614 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1615 pa_log_warn("Cannot change volume, source is monitor of a PASSTHROUGH sink");
1619 /* In case of volume sharing, the volume is set for the root source first,
1620 * from which it's then propagated to the sharing sources. */
1621 root_source = pa_source_get_master(s);
1623 if (PA_UNLIKELY(!root_source))
1626 /* As a special exception we accept mono volumes on all sources --
1627 * even on those with more complex channel maps */
1630 if (pa_cvolume_compatible(volume, &s->sample_spec))
1631 new_reference_volume = *volume;
1633 new_reference_volume = s->reference_volume;
1634 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1637 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1639 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1640 if (pa_source_flat_volume_enabled(root_source)) {
1641 /* OK, propagate this volume change back to the outputs */
1642 propagate_reference_volume(root_source);
1644 /* And now recalculate the real volume */
1645 compute_real_volume(root_source);
1647 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1651 /* If volume is NULL we synchronize the source's real and
1652 * reference volumes with the stream volumes. */
1654 pa_assert(pa_source_flat_volume_enabled(root_source));
1656 /* Ok, let's determine the new real volume */
1657 compute_real_volume(root_source);
1659 /* To propagate the reference volume from the filter to the root source,
1660 * we first take the real volume from the root source and remap it to
1661 * match the filter. Then, we merge in the reference volume from the
1662 * filter on top of this, and remap it back to the root source channel
1664 root_real_volume = root_source->real_volume;
1665 /* First we remap root's real volume to filter channel count and map if needed */
1666 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1667 pa_cvolume_remap(&root_real_volume, &root_source->channel_map, &s->channel_map);
1668 /* Then let's 'push' the reference volume if necessary */
1669 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_real_volume);
1670 /* If the source and its root don't have the same number of channels, we need to remap back */
1671 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1672 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1674 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1676 /* Now that the reference volume is updated, we can update the streams'
1677 * reference ratios. */
1678 compute_reference_ratios(root_source);
1681 if (root_source->set_volume) {
1682 /* If we have a function set_volume(), then we do not apply a
1683 * soft volume by default. However, set_volume() is free to
1684 * apply one to root_source->soft_volume */
1686 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1687 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1688 root_source->set_volume(root_source);
1691 /* If we have no function set_volume(), then the soft volume
1692 * becomes the real volume */
1693 root_source->soft_volume = root_source->real_volume;
1695 /* This tells the source that soft volume and/or real volume changed */
1697 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1700 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1701 * Only to be called by source implementor */
1702 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1704 pa_source_assert_ref(s);
1705 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1707 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1708 pa_source_assert_io_context(s);
1710 pa_assert_ctl_context();
1713 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1715 s->soft_volume = *volume;
1717 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1718 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1720 s->thread_info.soft_volume = s->soft_volume;
1723 /* Called from the main thread. Only called for the root source in volume sharing
1724 * cases, except for internal recursive calls. */
1725 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1726 pa_source_output *o;
1729 pa_source_assert_ref(s);
1730 pa_assert(old_real_volume);
1731 pa_assert_ctl_context();
1732 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1734 /* This is called when the hardware's real volume changes due to
1735 * some external event. We copy the real volume into our
1736 * reference volume and then rebuild the stream volumes based on
1737 * i->real_ratio which should stay fixed. */
1739 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1740 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1743 /* 1. Make the real volume the reference volume */
1744 update_reference_volume(s, &s->real_volume, &s->channel_map, true);
1747 if (pa_source_flat_volume_enabled(s)) {
1748 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1749 pa_cvolume new_volume;
1751 /* 2. Since the source's reference and real volumes are equal
1752 * now our ratios should be too. */
1753 pa_source_output_set_reference_ratio(o, &o->real_ratio);
1755 /* 3. Recalculate the new stream reference volume based on the
1756 * reference ratio and the sink's reference volume.
1758 * This basically calculates:
1760 * o->volume = s->reference_volume * o->reference_ratio
1762 * This is identical to propagate_reference_volume() */
1763 new_volume = s->reference_volume;
1764 pa_cvolume_remap(&new_volume, &s->channel_map, &o->channel_map);
1765 pa_sw_cvolume_multiply(&new_volume, &new_volume, &o->reference_ratio);
1766 pa_source_output_set_volume_direct(o, &new_volume);
1768 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
1769 && PA_SOURCE_IS_LINKED(o->destination_source->state))
1770 propagate_real_volume(o->destination_source, old_real_volume);
1774 /* Something got changed in the hardware. It probably makes sense
1775 * to save changed hw settings given that hw volume changes not
1776 * triggered by PA are almost certainly done by the user. */
1777 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1778 s->save_volume = true;
1781 /* Called from io thread */
1782 void pa_source_update_volume_and_mute(pa_source *s) {
1784 pa_source_assert_io_context(s);
1786 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1789 /* Called from main thread */
1790 const pa_cvolume *pa_source_get_volume(pa_source *s, bool force_refresh) {
1791 pa_source_assert_ref(s);
1792 pa_assert_ctl_context();
1793 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1795 if (s->refresh_volume || force_refresh) {
1796 struct pa_cvolume old_real_volume;
1798 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1800 old_real_volume = s->real_volume;
1802 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1805 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1807 update_real_volume(s, &s->real_volume, &s->channel_map);
1808 propagate_real_volume(s, &old_real_volume);
1811 return &s->reference_volume;
1814 /* Called from main thread. In volume sharing cases, only the root source may
1816 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1817 pa_cvolume old_real_volume;
1819 pa_source_assert_ref(s);
1820 pa_assert_ctl_context();
1821 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1822 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1824 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1826 old_real_volume = s->real_volume;
1827 update_real_volume(s, new_real_volume, &s->channel_map);
1828 propagate_real_volume(s, &old_real_volume);
1831 /* Called from main thread */
1832 void pa_source_set_mute(pa_source *s, bool mute, bool save) {
1835 pa_source_assert_ref(s);
1836 pa_assert_ctl_context();
1838 old_muted = s->muted;
1840 if (mute == old_muted) {
1841 s->save_muted |= save;
1846 s->save_muted = save;
1848 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute) {
1849 s->set_mute_in_progress = true;
1851 s->set_mute_in_progress = false;
1854 if (!PA_SOURCE_IS_LINKED(s->state))
1857 pa_log_debug("The mute of source %s changed from %s to %s.", s->name, pa_yes_no(old_muted), pa_yes_no(mute));
1858 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1859 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1860 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_MUTE_CHANGED], s);
1863 /* Called from main thread */
1864 bool pa_source_get_mute(pa_source *s, bool force_refresh) {
1866 pa_source_assert_ref(s);
1867 pa_assert_ctl_context();
1868 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1870 if ((s->refresh_muted || force_refresh) && s->get_mute) {
1873 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
1874 if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &mute, 0, NULL) >= 0)
1875 pa_source_mute_changed(s, mute);
1877 if (s->get_mute(s, &mute) >= 0)
1878 pa_source_mute_changed(s, mute);
1885 /* Called from main thread */
1886 void pa_source_mute_changed(pa_source *s, bool new_muted) {
1887 pa_source_assert_ref(s);
1888 pa_assert_ctl_context();
1889 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1891 if (s->set_mute_in_progress)
1894 /* pa_source_set_mute() does this same check, so this may appear redundant,
1895 * but we must have this here also, because the save parameter of
1896 * pa_source_set_mute() would otherwise have unintended side effects
1897 * (saving the mute state when it shouldn't be saved). */
1898 if (new_muted == s->muted)
1901 pa_source_set_mute(s, new_muted, true);
1904 /* Called from main thread */
1905 bool pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1906 pa_source_assert_ref(s);
1907 pa_assert_ctl_context();
1910 pa_proplist_update(s->proplist, mode, p);
1912 if (PA_SOURCE_IS_LINKED(s->state)) {
1913 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1914 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1920 /* Called from main thread */
1921 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1922 void pa_source_set_description(pa_source *s, const char *description) {
1924 pa_source_assert_ref(s);
1925 pa_assert_ctl_context();
1927 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1930 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1932 if (old && description && pa_streq(old, description))
1936 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1938 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1940 if (PA_SOURCE_IS_LINKED(s->state)) {
1941 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1942 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1946 /* Called from main thread */
1947 unsigned pa_source_linked_by(pa_source *s) {
1948 pa_source_assert_ref(s);
1949 pa_assert_ctl_context();
1950 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1952 return pa_idxset_size(s->outputs);
1955 /* Called from main thread */
1956 unsigned pa_source_used_by(pa_source *s) {
1959 pa_source_assert_ref(s);
1960 pa_assert_ctl_context();
1961 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1963 ret = pa_idxset_size(s->outputs);
1964 pa_assert(ret >= s->n_corked);
1966 return ret - s->n_corked;
1969 /* Called from main thread */
1970 unsigned pa_source_check_suspend(pa_source *s, pa_source_output *ignore) {
1972 pa_source_output *o;
1975 pa_source_assert_ref(s);
1976 pa_assert_ctl_context();
1978 if (!PA_SOURCE_IS_LINKED(s->state))
1983 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1984 pa_source_output_state_t st;
1989 st = pa_source_output_get_state(o);
1991 /* We do not assert here. It is perfectly valid for a source output to
1992 * be in the INIT state (i.e. created, marked done but not yet put)
1993 * and we should not care if it's unlinked as it won't contribute
1994 * towards our busy status.
1996 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1999 if (st == PA_SOURCE_OUTPUT_CORKED)
2002 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
2011 /* Called from the IO thread */
2012 static void sync_output_volumes_within_thread(pa_source *s) {
2013 pa_source_output *o;
2016 pa_source_assert_ref(s);
2017 pa_source_assert_io_context(s);
2019 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
2020 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
2023 o->thread_info.soft_volume = o->soft_volume;
2024 //pa_source_output_request_rewind(o, 0, true, false, false);
2028 /* Called from the IO thread. Only called for the root source in volume sharing
2029 * cases, except for internal recursive calls. */
2030 static void set_shared_volume_within_thread(pa_source *s) {
2031 pa_source_output *o;
2034 pa_source_assert_ref(s);
2036 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
2038 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
2039 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
2040 set_shared_volume_within_thread(o->destination_source);
2044 /* Called from IO thread, except when it is not */
2045 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
2046 pa_source *s = PA_SOURCE(object);
2047 pa_source_assert_ref(s);
2049 switch ((pa_source_message_t) code) {
2051 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
2052 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2054 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
2056 if (o->direct_on_input) {
2057 o->thread_info.direct_on_input = o->direct_on_input;
2058 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
2061 pa_source_output_attach(o);
2063 pa_source_output_set_state_within_thread(o, o->state);
2065 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
2066 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2068 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2070 /* We don't just invalidate the requested latency here,
2071 * because if we are in a move we might need to fix up the
2072 * requested latency. */
2073 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2075 /* In flat volume mode we need to update the volume as
2077 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2080 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
2081 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2083 pa_source_output_set_state_within_thread(o, o->state);
2085 pa_source_output_detach(o);
2087 if (o->thread_info.direct_on_input) {
2088 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
2089 o->thread_info.direct_on_input = NULL;
2092 pa_hashmap_remove_and_free(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index));
2093 pa_source_invalidate_requested_latency(s, true);
2095 /* In flat volume mode we need to update the volume as
2097 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2100 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
2101 pa_source *root_source = pa_source_get_master(s);
2103 if (PA_LIKELY(root_source))
2104 set_shared_volume_within_thread(root_source);
2109 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
2111 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2113 pa_source_volume_change_push(s);
2115 /* Fall through ... */
2117 case PA_SOURCE_MESSAGE_SET_VOLUME:
2119 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2120 s->thread_info.soft_volume = s->soft_volume;
2123 /* Fall through ... */
2125 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
2126 sync_output_volumes_within_thread(s);
2129 case PA_SOURCE_MESSAGE_GET_VOLUME:
2131 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
2133 pa_source_volume_change_flush(s);
2134 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2137 /* In case source implementor reset SW volume. */
2138 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2139 s->thread_info.soft_volume = s->soft_volume;
2144 case PA_SOURCE_MESSAGE_SET_MUTE:
2146 if (s->thread_info.soft_muted != s->muted) {
2147 s->thread_info.soft_muted = s->muted;
2150 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2155 case PA_SOURCE_MESSAGE_GET_MUTE:
2157 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2158 return s->get_mute(s, userdata);
2162 case PA_SOURCE_MESSAGE_SET_STATE: {
2164 bool suspend_change =
2165 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2166 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
2168 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2170 if (suspend_change) {
2171 pa_source_output *o;
2174 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2175 if (o->suspend_within_thread)
2176 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2182 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2184 pa_usec_t *usec = userdata;
2185 *usec = pa_source_get_requested_latency_within_thread(s);
2187 /* Yes, that's right, the IO thread will see -1 when no
2188 * explicit requested latency is configured, the main
2189 * thread will see max_latency */
2190 if (*usec == (pa_usec_t) -1)
2191 *usec = s->thread_info.max_latency;
2196 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2197 pa_usec_t *r = userdata;
2199 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2204 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2205 pa_usec_t *r = userdata;
2207 r[0] = s->thread_info.min_latency;
2208 r[1] = s->thread_info.max_latency;
2213 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2215 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2218 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2220 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2223 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2225 *((size_t*) userdata) = s->thread_info.max_rewind;
2228 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2230 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2233 case PA_SOURCE_MESSAGE_GET_LATENCY:
2235 if (s->monitor_of) {
2236 *((int64_t*) userdata) = -pa_sink_get_latency_within_thread(s->monitor_of, true);
2240 /* Implementors need to overwrite this implementation! */
2243 case PA_SOURCE_MESSAGE_SET_PORT:
2245 pa_assert(userdata);
2247 struct source_message_set_port *msg_data = userdata;
2248 msg_data->ret = s->set_port(s, msg_data->port);
2252 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2253 /* This message is sent from IO-thread and handled in main thread. */
2254 pa_assert_ctl_context();
2256 /* Make sure we're not messing with main thread when no longer linked */
2257 if (!PA_SOURCE_IS_LINKED(s->state))
2260 pa_source_get_volume(s, true);
2261 pa_source_get_mute(s, true);
2264 case PA_SOURCE_MESSAGE_SET_PORT_LATENCY_OFFSET:
2265 s->thread_info.port_latency_offset = offset;
2268 case PA_SOURCE_MESSAGE_MAX:
2275 /* Called from main thread */
2276 int pa_source_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
2281 pa_core_assert_ref(c);
2282 pa_assert_ctl_context();
2283 pa_assert(cause != 0);
2285 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2288 if (source->monitor_of)
2291 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2298 /* Called from IO thread */
2299 void pa_source_detach_within_thread(pa_source *s) {
2300 pa_source_output *o;
2303 pa_source_assert_ref(s);
2304 pa_source_assert_io_context(s);
2305 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2307 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2308 pa_source_output_detach(o);
2311 /* Called from IO thread */
2312 void pa_source_attach_within_thread(pa_source *s) {
2313 pa_source_output *o;
2316 pa_source_assert_ref(s);
2317 pa_source_assert_io_context(s);
2318 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2320 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2321 pa_source_output_attach(o);
2324 /* Called from IO thread */
2325 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2326 pa_usec_t result = (pa_usec_t) -1;
2327 pa_source_output *o;
2330 pa_source_assert_ref(s);
2331 pa_source_assert_io_context(s);
2333 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2334 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2336 if (s->thread_info.requested_latency_valid)
2337 return s->thread_info.requested_latency;
2339 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2340 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2341 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2342 result = o->thread_info.requested_source_latency;
2344 if (result != (pa_usec_t) -1)
2345 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2347 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2348 /* Only cache this if we are fully set up */
2349 s->thread_info.requested_latency = result;
2350 s->thread_info.requested_latency_valid = true;
2356 /* Called from main thread */
2357 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2360 pa_source_assert_ref(s);
2361 pa_assert_ctl_context();
2362 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2364 if (s->state == PA_SOURCE_SUSPENDED)
2367 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2372 /* Called from IO thread */
2373 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2374 pa_source_output *o;
2377 pa_source_assert_ref(s);
2378 pa_source_assert_io_context(s);
2380 if (max_rewind == s->thread_info.max_rewind)
2383 s->thread_info.max_rewind = max_rewind;
2385 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2386 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2387 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2390 /* Called from main thread */
2391 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2392 pa_source_assert_ref(s);
2393 pa_assert_ctl_context();
2395 if (PA_SOURCE_IS_LINKED(s->state))
2396 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2398 pa_source_set_max_rewind_within_thread(s, max_rewind);
2401 /* Called from IO thread */
2402 void pa_source_invalidate_requested_latency(pa_source *s, bool dynamic) {
2403 pa_source_output *o;
2406 pa_source_assert_ref(s);
2407 pa_source_assert_io_context(s);
2409 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2410 s->thread_info.requested_latency_valid = false;
2414 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2416 if (s->update_requested_latency)
2417 s->update_requested_latency(s);
2419 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2420 if (o->update_source_requested_latency)
2421 o->update_source_requested_latency(o);
2425 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2428 /* Called from main thread */
2429 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2430 pa_source_assert_ref(s);
2431 pa_assert_ctl_context();
2433 /* min_latency == 0: no limit
2434 * min_latency anything else: specified limit
2436 * Similar for max_latency */
2438 if (min_latency < ABSOLUTE_MIN_LATENCY)
2439 min_latency = ABSOLUTE_MIN_LATENCY;
2441 if (max_latency <= 0 ||
2442 max_latency > ABSOLUTE_MAX_LATENCY)
2443 max_latency = ABSOLUTE_MAX_LATENCY;
2445 pa_assert(min_latency <= max_latency);
2447 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2448 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2449 max_latency == ABSOLUTE_MAX_LATENCY) ||
2450 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2452 if (PA_SOURCE_IS_LINKED(s->state)) {
2458 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2460 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2463 /* Called from main thread */
2464 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2465 pa_source_assert_ref(s);
2466 pa_assert_ctl_context();
2467 pa_assert(min_latency);
2468 pa_assert(max_latency);
2470 if (PA_SOURCE_IS_LINKED(s->state)) {
2471 pa_usec_t r[2] = { 0, 0 };
2473 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2475 *min_latency = r[0];
2476 *max_latency = r[1];
2478 *min_latency = s->thread_info.min_latency;
2479 *max_latency = s->thread_info.max_latency;
2483 /* Called from IO thread, and from main thread before pa_source_put() is called */
2484 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2485 pa_source_assert_ref(s);
2486 pa_source_assert_io_context(s);
2488 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2489 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2490 pa_assert(min_latency <= max_latency);
2492 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2493 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2494 max_latency == ABSOLUTE_MAX_LATENCY) ||
2495 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2498 if (s->thread_info.min_latency == min_latency &&
2499 s->thread_info.max_latency == max_latency)
2502 s->thread_info.min_latency = min_latency;
2503 s->thread_info.max_latency = max_latency;
2505 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2506 pa_source_output *o;
2509 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2510 if (o->update_source_latency_range)
2511 o->update_source_latency_range(o);
2514 pa_source_invalidate_requested_latency(s, false);
2517 /* Called from main thread, before the source is put */
2518 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2519 pa_source_assert_ref(s);
2520 pa_assert_ctl_context();
2522 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2523 pa_assert(latency == 0);
2527 if (latency < ABSOLUTE_MIN_LATENCY)
2528 latency = ABSOLUTE_MIN_LATENCY;
2530 if (latency > ABSOLUTE_MAX_LATENCY)
2531 latency = ABSOLUTE_MAX_LATENCY;
2533 if (PA_SOURCE_IS_LINKED(s->state))
2534 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2536 s->thread_info.fixed_latency = latency;
2539 /* Called from main thread */
2540 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2543 pa_source_assert_ref(s);
2544 pa_assert_ctl_context();
2546 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2549 if (PA_SOURCE_IS_LINKED(s->state))
2550 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2552 latency = s->thread_info.fixed_latency;
2557 /* Called from IO thread */
2558 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2559 pa_source_assert_ref(s);
2560 pa_source_assert_io_context(s);
2562 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2563 pa_assert(latency == 0);
2564 s->thread_info.fixed_latency = 0;
2569 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2570 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2572 if (s->thread_info.fixed_latency == latency)
2575 s->thread_info.fixed_latency = latency;
2577 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2578 pa_source_output *o;
2581 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2582 if (o->update_source_fixed_latency)
2583 o->update_source_fixed_latency(o);
2586 pa_source_invalidate_requested_latency(s, false);
2589 /* Called from main thread */
2590 void pa_source_set_port_latency_offset(pa_source *s, int64_t offset) {
2591 pa_source_assert_ref(s);
2593 s->port_latency_offset = offset;
2595 if (PA_SOURCE_IS_LINKED(s->state))
2596 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT_LATENCY_OFFSET, NULL, offset, NULL) == 0);
2598 s->thread_info.port_latency_offset = offset;
2600 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_LATENCY_OFFSET_CHANGED], s);
2603 /* Called from main thread */
2604 size_t pa_source_get_max_rewind(pa_source *s) {
2606 pa_assert_ctl_context();
2607 pa_source_assert_ref(s);
2609 if (!PA_SOURCE_IS_LINKED(s->state))
2610 return s->thread_info.max_rewind;
2612 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2617 /* Called from main context */
2618 int pa_source_set_port(pa_source *s, const char *name, bool save) {
2619 pa_device_port *port;
2622 pa_source_assert_ref(s);
2623 pa_assert_ctl_context();
2626 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2627 return -PA_ERR_NOTIMPLEMENTED;
2631 return -PA_ERR_NOENTITY;
2633 if (!(port = pa_hashmap_get(s->ports, name)))
2634 return -PA_ERR_NOENTITY;
2636 if (s->active_port == port) {
2637 s->save_port = s->save_port || save;
2641 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2642 struct source_message_set_port msg = { .port = port, .ret = 0 };
2643 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2647 ret = s->set_port(s, port);
2650 return -PA_ERR_NOENTITY;
2652 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2654 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2656 s->active_port = port;
2657 s->save_port = save;
2659 /* The active port affects the default source selection. */
2660 pa_core_update_default_source(s->core);
2662 pa_source_set_port_latency_offset(s, s->active_port->latency_offset);
2664 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2669 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2671 /* Called from the IO thread. */
2672 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2673 pa_source_volume_change *c;
2674 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2675 c = pa_xnew(pa_source_volume_change, 1);
2677 PA_LLIST_INIT(pa_source_volume_change, c);
2679 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2683 /* Called from the IO thread. */
2684 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2686 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2690 /* Called from the IO thread. */
2691 void pa_source_volume_change_push(pa_source *s) {
2692 pa_source_volume_change *c = NULL;
2693 pa_source_volume_change *nc = NULL;
2694 pa_source_volume_change *pc = NULL;
2695 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2697 const char *direction = NULL;
2700 nc = pa_source_volume_change_new(s);
2702 /* NOTE: There is already more different volumes in pa_source that I can remember.
2703 * Adding one more volume for HW would get us rid of this, but I am trying
2704 * to survive with the ones we already have. */
2705 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2707 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2708 pa_log_debug("Volume not changing");
2709 pa_source_volume_change_free(nc);
2713 nc->at = pa_source_get_latency_within_thread(s, false);
2714 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2716 if (s->thread_info.volume_changes_tail) {
2717 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2718 /* If volume is going up let's do it a bit late. If it is going
2719 * down let's do it a bit early. */
2720 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2721 if (nc->at + safety_margin > c->at) {
2722 nc->at += safety_margin;
2727 else if (nc->at - safety_margin > c->at) {
2728 nc->at -= safety_margin;
2736 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2737 nc->at += safety_margin;
2740 nc->at -= safety_margin;
2743 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2746 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2749 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2751 /* We can ignore volume events that came earlier but should happen later than this. */
2752 PA_LLIST_FOREACH_SAFE(c, pc, nc->next) {
2753 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2754 pa_source_volume_change_free(c);
2757 s->thread_info.volume_changes_tail = nc;
2760 /* Called from the IO thread. */
2761 static void pa_source_volume_change_flush(pa_source *s) {
2762 pa_source_volume_change *c = s->thread_info.volume_changes;
2764 s->thread_info.volume_changes = NULL;
2765 s->thread_info.volume_changes_tail = NULL;
2767 pa_source_volume_change *next = c->next;
2768 pa_source_volume_change_free(c);
2773 /* Called from the IO thread. */
2774 bool pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2780 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2786 pa_assert(s->write_volume);
2788 now = pa_rtclock_now();
2790 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2791 pa_source_volume_change *c = s->thread_info.volume_changes;
2792 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2793 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2794 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2796 s->thread_info.current_hw_volume = c->hw_volume;
2797 pa_source_volume_change_free(c);
2803 if (s->thread_info.volume_changes) {
2805 *usec_to_next = s->thread_info.volume_changes->at - now;
2806 if (pa_log_ratelimit(PA_LOG_DEBUG))
2807 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2812 s->thread_info.volume_changes_tail = NULL;
2817 /* Called from the main thread */
2818 /* Gets the list of formats supported by the source. The members and idxset must
2819 * be freed by the caller. */
2820 pa_idxset* pa_source_get_formats(pa_source *s) {
2825 if (s->get_formats) {
2826 /* Source supports format query, all is good */
2827 ret = s->get_formats(s);
2829 /* Source doesn't support format query, so assume it does PCM */
2830 pa_format_info *f = pa_format_info_new();
2831 f->encoding = PA_ENCODING_PCM;
2833 ret = pa_idxset_new(NULL, NULL);
2834 pa_idxset_put(ret, f, NULL);
2840 /* Called from the main thread */
2841 /* Checks if the source can accept this format */
2842 bool pa_source_check_format(pa_source *s, pa_format_info *f) {
2843 pa_idxset *formats = NULL;
2849 formats = pa_source_get_formats(s);
2852 pa_format_info *finfo_device;
2855 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2856 if (pa_format_info_is_compatible(finfo_device, f)) {
2862 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
2868 /* Called from the main thread */
2869 /* Calculates the intersection between formats supported by the source and
2870 * in_formats, and returns these, in the order of the source's formats. */
2871 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2872 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2873 pa_format_info *f_source, *f_in;
2878 if (!in_formats || pa_idxset_isempty(in_formats))
2881 source_formats = pa_source_get_formats(s);
2883 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2884 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2885 if (pa_format_info_is_compatible(f_source, f_in))
2886 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2892 pa_idxset_free(source_formats, (pa_free_cb_t) pa_format_info_free);
2897 /* Called from the main thread. */
2898 void pa_source_set_reference_volume_direct(pa_source *s, const pa_cvolume *volume) {
2899 pa_cvolume old_volume;
2900 char old_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
2901 char new_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
2906 old_volume = s->reference_volume;
2908 if (pa_cvolume_equal(volume, &old_volume))
2911 s->reference_volume = *volume;
2912 pa_log_debug("The reference volume of source %s changed from %s to %s.", s->name,
2913 pa_cvolume_snprint_verbose(old_volume_str, sizeof(old_volume_str), &old_volume, &s->channel_map,
2914 s->flags & PA_SOURCE_DECIBEL_VOLUME),
2915 pa_cvolume_snprint_verbose(new_volume_str, sizeof(new_volume_str), volume, &s->channel_map,
2916 s->flags & PA_SOURCE_DECIBEL_VOLUME));
2918 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2919 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_VOLUME_CHANGED], s);