2 This file is part of PulseAudio.
4 Copyright 2004-2006 Lennart Poettering
5 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
7 PulseAudio is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published
9 by the Free Software Foundation; either version 2.1 of the License,
10 or (at your option) any later version.
12 PulseAudio is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with PulseAudio; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
30 #include <pulse/format.h>
31 #include <pulse/utf8.h>
32 #include <pulse/xmalloc.h>
33 #include <pulse/timeval.h>
34 #include <pulse/util.h>
35 #include <pulse/rtclock.h>
36 #include <pulse/internal.h>
38 #include <pulsecore/core-util.h>
39 #include <pulsecore/source-output.h>
40 #include <pulsecore/namereg.h>
41 #include <pulsecore/core-subscribe.h>
42 #include <pulsecore/log.h>
43 #include <pulsecore/mix.h>
44 #include <pulsecore/flist.h>
48 #define ABSOLUTE_MIN_LATENCY (500)
49 #define ABSOLUTE_MAX_LATENCY (10*PA_USEC_PER_SEC)
50 #define DEFAULT_FIXED_LATENCY (250*PA_USEC_PER_MSEC)
52 PA_DEFINE_PUBLIC_CLASS(pa_source, pa_msgobject);
54 struct pa_source_volume_change {
58 PA_LLIST_FIELDS(pa_source_volume_change);
61 struct source_message_set_port {
66 static void source_free(pa_object *o);
68 static void pa_source_volume_change_push(pa_source *s);
69 static void pa_source_volume_change_flush(pa_source *s);
71 pa_source_new_data* pa_source_new_data_init(pa_source_new_data *data) {
75 data->proplist = pa_proplist_new();
76 data->ports = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL, (pa_free_cb_t) pa_device_port_unref);
81 void pa_source_new_data_set_name(pa_source_new_data *data, const char *name) {
85 data->name = pa_xstrdup(name);
88 void pa_source_new_data_set_sample_spec(pa_source_new_data *data, const pa_sample_spec *spec) {
91 if ((data->sample_spec_is_set = !!spec))
92 data->sample_spec = *spec;
95 void pa_source_new_data_set_channel_map(pa_source_new_data *data, const pa_channel_map *map) {
98 if ((data->channel_map_is_set = !!map))
99 data->channel_map = *map;
102 void pa_source_new_data_set_alternate_sample_rate(pa_source_new_data *data, const uint32_t alternate_sample_rate) {
105 data->alternate_sample_rate_is_set = true;
106 data->alternate_sample_rate = alternate_sample_rate;
109 void pa_source_new_data_set_volume(pa_source_new_data *data, const pa_cvolume *volume) {
112 if ((data->volume_is_set = !!volume))
113 data->volume = *volume;
116 void pa_source_new_data_set_muted(pa_source_new_data *data, bool mute) {
119 data->muted_is_set = true;
120 data->muted = !!mute;
123 void pa_source_new_data_set_port(pa_source_new_data *data, const char *port) {
126 pa_xfree(data->active_port);
127 data->active_port = pa_xstrdup(port);
130 void pa_source_new_data_done(pa_source_new_data *data) {
133 pa_proplist_free(data->proplist);
136 pa_hashmap_free(data->ports);
138 pa_xfree(data->name);
139 pa_xfree(data->active_port);
142 /* Called from main context */
143 static void reset_callbacks(pa_source *s) {
147 s->get_volume = NULL;
148 s->set_volume = NULL;
149 s->write_volume = NULL;
152 s->update_requested_latency = NULL;
154 s->get_formats = NULL;
155 s->update_rate = NULL;
158 /* Called from main context */
159 pa_source* pa_source_new(
161 pa_source_new_data *data,
162 pa_source_flags_t flags) {
166 char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
171 pa_assert(data->name);
172 pa_assert_ctl_context();
174 s = pa_msgobject_new(pa_source);
176 if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
177 pa_log_debug("Failed to register name %s.", data->name);
182 pa_source_new_data_set_name(data, name);
184 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
186 pa_namereg_unregister(core, name);
190 /* FIXME, need to free s here on failure */
192 pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
193 pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
195 pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
197 if (!data->channel_map_is_set)
198 pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
200 pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
201 pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
203 /* FIXME: There should probably be a general function for checking whether
204 * the source volume is allowed to be set, like there is for source outputs. */
205 pa_assert(!data->volume_is_set || !(flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
207 if (!data->volume_is_set) {
208 pa_cvolume_reset(&data->volume, data->sample_spec.channels);
209 data->save_volume = false;
212 pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
213 pa_return_null_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec));
215 if (!data->muted_is_set)
219 pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
221 pa_device_init_description(data->proplist);
222 pa_device_init_icon(data->proplist, false);
223 pa_device_init_intended_roles(data->proplist);
225 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
227 pa_namereg_unregister(core, name);
231 s->parent.parent.free = source_free;
232 s->parent.process_msg = pa_source_process_msg;
235 s->state = PA_SOURCE_INIT;
238 s->suspend_cause = data->suspend_cause;
239 pa_source_set_mixer_dirty(s, false);
240 s->name = pa_xstrdup(name);
241 s->proplist = pa_proplist_copy(data->proplist);
242 s->driver = pa_xstrdup(pa_path_get_filename(data->driver));
243 s->module = data->module;
244 s->card = data->card;
246 s->priority = pa_device_init_priority(s->proplist);
248 s->sample_spec = data->sample_spec;
249 s->channel_map = data->channel_map;
250 s->default_sample_rate = s->sample_spec.rate;
252 if (data->alternate_sample_rate_is_set)
253 s->alternate_sample_rate = data->alternate_sample_rate;
255 s->alternate_sample_rate = s->core->alternate_sample_rate;
257 if (s->sample_spec.rate == s->alternate_sample_rate) {
258 pa_log_warn("Default and alternate sample rates are the same.");
259 s->alternate_sample_rate = 0;
262 s->outputs = pa_idxset_new(NULL, NULL);
264 s->monitor_of = NULL;
265 s->output_from_master = NULL;
267 s->reference_volume = s->real_volume = data->volume;
268 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
269 s->base_volume = PA_VOLUME_NORM;
270 s->n_volume_steps = PA_VOLUME_NORM+1;
271 s->muted = data->muted;
272 s->refresh_volume = s->refresh_muted = false;
279 /* As a minor optimization we just steal the list instead of
281 s->ports = data->ports;
284 s->active_port = NULL;
285 s->save_port = false;
287 if (data->active_port)
288 if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
289 s->save_port = data->save_port;
291 if (!s->active_port) {
295 PA_HASHMAP_FOREACH(p, s->ports, state) {
296 if (p->available == PA_AVAILABLE_NO)
299 if (!s->active_port || p->priority > s->active_port->priority)
303 if (!s->active_port) {
304 PA_HASHMAP_FOREACH(p, s->ports, state)
305 if (!s->active_port || p->priority > s->active_port->priority)
311 s->latency_offset = s->active_port->latency_offset;
313 s->latency_offset = 0;
315 s->save_volume = data->save_volume;
316 s->save_muted = data->save_muted;
318 pa_silence_memchunk_get(
319 &core->silence_cache,
325 s->thread_info.rtpoll = NULL;
326 s->thread_info.outputs = pa_hashmap_new_full(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func, NULL,
327 (pa_free_cb_t) pa_source_output_unref);
328 s->thread_info.soft_volume = s->soft_volume;
329 s->thread_info.soft_muted = s->muted;
330 s->thread_info.state = s->state;
331 s->thread_info.max_rewind = 0;
332 s->thread_info.requested_latency_valid = false;
333 s->thread_info.requested_latency = 0;
334 s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
335 s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
336 s->thread_info.fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
338 PA_LLIST_HEAD_INIT(pa_source_volume_change, s->thread_info.volume_changes);
339 s->thread_info.volume_changes_tail = NULL;
340 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
341 s->thread_info.volume_change_safety_margin = core->deferred_volume_safety_margin_usec;
342 s->thread_info.volume_change_extra_delay = core->deferred_volume_extra_delay_usec;
343 s->thread_info.latency_offset = s->latency_offset;
345 /* FIXME: This should probably be moved to pa_source_put() */
346 pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
349 pa_assert_se(pa_idxset_put(s->card->sources, s, NULL) >= 0);
351 pt = pa_proplist_to_string_sep(s->proplist, "\n ");
352 pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s\n %s",
355 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
356 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
363 /* Called from main context */
364 static int source_set_state(pa_source *s, pa_source_state_t state) {
367 pa_source_state_t original_state;
370 pa_assert_ctl_context();
372 if (s->state == state)
375 original_state = s->state;
378 (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
379 (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
382 if ((ret = s->set_state(s, state)) < 0)
386 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
389 s->set_state(s, original_state);
396 if (state != PA_SOURCE_UNLINKED) { /* if we enter UNLINKED state pa_source_unlink() will fire the appropriate events */
397 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
398 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
401 if (suspend_change) {
405 /* We're suspending or resuming, tell everyone about it */
407 PA_IDXSET_FOREACH(o, s->outputs, idx)
408 if (s->state == PA_SOURCE_SUSPENDED &&
409 (o->flags & PA_SOURCE_OUTPUT_KILL_ON_SUSPEND))
410 pa_source_output_kill(o);
412 o->suspend(o, state == PA_SOURCE_SUSPENDED);
418 void pa_source_set_get_volume_callback(pa_source *s, pa_source_cb_t cb) {
424 void pa_source_set_set_volume_callback(pa_source *s, pa_source_cb_t cb) {
425 pa_source_flags_t flags;
428 pa_assert(!s->write_volume || cb);
432 /* Save the current flags so we can tell if they've changed */
436 /* The source implementor is responsible for setting decibel volume support */
437 s->flags |= PA_SOURCE_HW_VOLUME_CTRL;
439 s->flags &= ~PA_SOURCE_HW_VOLUME_CTRL;
440 /* See note below in pa_source_put() about volume sharing and decibel volumes */
441 pa_source_enable_decibel_volume(s, !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
444 /* If the flags have changed after init, let any clients know via a change event */
445 if (s->state != PA_SOURCE_INIT && flags != s->flags)
446 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
449 void pa_source_set_write_volume_callback(pa_source *s, pa_source_cb_t cb) {
450 pa_source_flags_t flags;
453 pa_assert(!cb || s->set_volume);
455 s->write_volume = cb;
457 /* Save the current flags so we can tell if they've changed */
461 s->flags |= PA_SOURCE_DEFERRED_VOLUME;
463 s->flags &= ~PA_SOURCE_DEFERRED_VOLUME;
465 /* If the flags have changed after init, let any clients know via a change event */
466 if (s->state != PA_SOURCE_INIT && flags != s->flags)
467 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
470 void pa_source_set_get_mute_callback(pa_source *s, pa_source_cb_t cb) {
476 void pa_source_set_set_mute_callback(pa_source *s, pa_source_cb_t cb) {
477 pa_source_flags_t flags;
483 /* Save the current flags so we can tell if they've changed */
487 s->flags |= PA_SOURCE_HW_MUTE_CTRL;
489 s->flags &= ~PA_SOURCE_HW_MUTE_CTRL;
491 /* If the flags have changed after init, let any clients know via a change event */
492 if (s->state != PA_SOURCE_INIT && flags != s->flags)
493 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
496 static void enable_flat_volume(pa_source *s, bool enable) {
497 pa_source_flags_t flags;
501 /* Always follow the overall user preference here */
502 enable = enable && s->core->flat_volumes;
504 /* Save the current flags so we can tell if they've changed */
508 s->flags |= PA_SOURCE_FLAT_VOLUME;
510 s->flags &= ~PA_SOURCE_FLAT_VOLUME;
512 /* If the flags have changed after init, let any clients know via a change event */
513 if (s->state != PA_SOURCE_INIT && flags != s->flags)
514 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
517 void pa_source_enable_decibel_volume(pa_source *s, bool enable) {
518 pa_source_flags_t flags;
522 /* Save the current flags so we can tell if they've changed */
526 s->flags |= PA_SOURCE_DECIBEL_VOLUME;
527 enable_flat_volume(s, true);
529 s->flags &= ~PA_SOURCE_DECIBEL_VOLUME;
530 enable_flat_volume(s, false);
533 /* If the flags have changed after init, let any clients know via a change event */
534 if (s->state != PA_SOURCE_INIT && flags != s->flags)
535 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
538 /* Called from main context */
539 void pa_source_put(pa_source *s) {
540 pa_source_assert_ref(s);
541 pa_assert_ctl_context();
543 pa_assert(s->state == PA_SOURCE_INIT);
544 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || s->output_from_master);
546 /* The following fields must be initialized properly when calling _put() */
547 pa_assert(s->asyncmsgq);
548 pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
550 /* Generally, flags should be initialized via pa_source_new(). As a
551 * special exception we allow some volume related flags to be set
552 * between _new() and _put() by the callback setter functions above.
554 * Thus we implement a couple safeguards here which ensure the above
555 * setters were used (or at least the implementor made manual changes
556 * in a compatible way).
558 * Note: All of these flags set here can change over the life time
560 pa_assert(!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) || s->set_volume);
561 pa_assert(!(s->flags & PA_SOURCE_DEFERRED_VOLUME) || s->write_volume);
562 pa_assert(!(s->flags & PA_SOURCE_HW_MUTE_CTRL) || s->set_mute);
564 /* XXX: Currently decibel volume is disabled for all sources that use volume
565 * sharing. When the master source supports decibel volume, it would be good
566 * to have the flag also in the filter source, but currently we don't do that
567 * so that the flags of the filter source never change when it's moved from
568 * a master source to another. One solution for this problem would be to
569 * remove user-visible volume altogether from filter sources when volume
570 * sharing is used, but the current approach was easier to implement... */
571 /* We always support decibel volumes in software, otherwise we leave it to
572 * the source implementor to set this flag as needed.
574 * Note: This flag can also change over the life time of the source. */
575 if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
576 pa_source_enable_decibel_volume(s, true);
578 /* If the source implementor support DB volumes by itself, we should always
579 * try and enable flat volumes too */
580 if ((s->flags & PA_SOURCE_DECIBEL_VOLUME))
581 enable_flat_volume(s, true);
583 if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
584 pa_source *root_source = pa_source_get_master(s);
586 pa_assert(PA_LIKELY(root_source));
588 s->reference_volume = root_source->reference_volume;
589 pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
591 s->real_volume = root_source->real_volume;
592 pa_cvolume_remap(&s->real_volume, &root_source->channel_map, &s->channel_map);
594 /* We assume that if the sink implementor changed the default
595 * volume he did so in real_volume, because that is the usual
596 * place where he is supposed to place his changes. */
597 s->reference_volume = s->real_volume;
599 s->thread_info.soft_volume = s->soft_volume;
600 s->thread_info.soft_muted = s->muted;
601 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
603 pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL)
604 || (s->base_volume == PA_VOLUME_NORM
605 && ((s->flags & PA_SOURCE_DECIBEL_VOLUME || (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)))));
606 pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
607 pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == (s->thread_info.fixed_latency != 0));
609 if (s->suspend_cause)
610 pa_assert_se(source_set_state(s, PA_SOURCE_SUSPENDED) == 0);
612 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
614 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
615 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
618 /* Called from main context */
619 void pa_source_unlink(pa_source *s) {
621 pa_source_output *o, *j = NULL;
624 pa_assert_ctl_context();
626 /* See pa_sink_unlink() for a couple of comments how this function
629 linked = PA_SOURCE_IS_LINKED(s->state);
632 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
634 if (s->state != PA_SOURCE_UNLINKED)
635 pa_namereg_unregister(s->core, s->name);
636 pa_idxset_remove_by_data(s->core->sources, s, NULL);
639 pa_idxset_remove_by_data(s->card->sources, s, NULL);
641 while ((o = pa_idxset_first(s->outputs, NULL))) {
643 pa_source_output_kill(o);
648 source_set_state(s, PA_SOURCE_UNLINKED);
650 s->state = PA_SOURCE_UNLINKED;
655 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
656 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
660 /* Called from main context */
661 static void source_free(pa_object *o) {
662 pa_source *s = PA_SOURCE(o);
665 pa_assert_ctl_context();
666 pa_assert(pa_source_refcnt(s) == 0);
668 if (PA_SOURCE_IS_LINKED(s->state))
671 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
673 pa_idxset_free(s->outputs, NULL);
674 pa_hashmap_free(s->thread_info.outputs);
676 if (s->silence.memblock)
677 pa_memblock_unref(s->silence.memblock);
683 pa_proplist_free(s->proplist);
686 pa_hashmap_free(s->ports);
691 /* Called from main context, and not while the IO thread is active, please */
692 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
693 pa_source_assert_ref(s);
694 pa_assert_ctl_context();
699 /* Called from main context, and not while the IO thread is active, please */
700 void pa_source_update_flags(pa_source *s, pa_source_flags_t mask, pa_source_flags_t value) {
701 pa_source_flags_t old_flags;
702 pa_source_output *output;
705 pa_source_assert_ref(s);
706 pa_assert_ctl_context();
708 /* For now, allow only a minimal set of flags to be changed. */
709 pa_assert((mask & ~(PA_SOURCE_DYNAMIC_LATENCY|PA_SOURCE_LATENCY)) == 0);
711 old_flags = s->flags;
712 s->flags = (s->flags & ~mask) | (value & mask);
714 if (s->flags == old_flags)
717 if ((s->flags & PA_SOURCE_LATENCY) != (old_flags & PA_SOURCE_LATENCY))
718 pa_log_debug("Source %s: LATENCY flag %s.", s->name, (s->flags & PA_SOURCE_LATENCY) ? "enabled" : "disabled");
720 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY) != (old_flags & PA_SOURCE_DYNAMIC_LATENCY))
721 pa_log_debug("Source %s: DYNAMIC_LATENCY flag %s.",
722 s->name, (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ? "enabled" : "disabled");
724 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
725 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_FLAGS_CHANGED], s);
727 PA_IDXSET_FOREACH(output, s->outputs, idx) {
728 if (output->destination_source)
729 pa_source_update_flags(output->destination_source, mask, value);
733 /* Called from IO context, or before _put() from main context */
734 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
735 pa_source_assert_ref(s);
736 pa_source_assert_io_context(s);
738 s->thread_info.rtpoll = p;
741 /* Called from main context */
742 int pa_source_update_status(pa_source*s) {
743 pa_source_assert_ref(s);
744 pa_assert_ctl_context();
745 pa_assert(PA_SOURCE_IS_LINKED(s->state));
747 if (s->state == PA_SOURCE_SUSPENDED)
750 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
753 /* Called from any context - must be threadsafe */
754 void pa_source_set_mixer_dirty(pa_source *s, bool is_dirty) {
755 pa_atomic_store(&s->mixer_dirty, is_dirty ? 1 : 0);
758 /* Called from main context */
759 int pa_source_suspend(pa_source *s, bool suspend, pa_suspend_cause_t cause) {
760 pa_source_assert_ref(s);
761 pa_assert_ctl_context();
762 pa_assert(PA_SOURCE_IS_LINKED(s->state));
763 pa_assert(cause != 0);
765 if (s->monitor_of && cause != PA_SUSPEND_PASSTHROUGH)
766 return -PA_ERR_NOTSUPPORTED;
769 s->suspend_cause |= cause;
771 s->suspend_cause &= ~cause;
773 if (!(s->suspend_cause & PA_SUSPEND_SESSION) && (pa_atomic_load(&s->mixer_dirty) != 0)) {
774 /* This might look racy but isn't: If somebody sets mixer_dirty exactly here,
775 it'll be handled just fine. */
776 pa_source_set_mixer_dirty(s, false);
777 pa_log_debug("Mixer is now accessible. Updating alsa mixer settings.");
778 if (s->active_port && s->set_port) {
779 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
780 struct source_message_set_port msg = { .port = s->active_port, .ret = 0 };
781 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
784 s->set_port(s, s->active_port);
794 if ((pa_source_get_state(s) == PA_SOURCE_SUSPENDED) == !!s->suspend_cause)
797 pa_log_debug("Suspend cause of source %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
799 if (s->suspend_cause)
800 return source_set_state(s, PA_SOURCE_SUSPENDED);
802 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
805 /* Called from main context */
806 int pa_source_sync_suspend(pa_source *s) {
807 pa_sink_state_t state;
809 pa_source_assert_ref(s);
810 pa_assert_ctl_context();
811 pa_assert(PA_SOURCE_IS_LINKED(s->state));
812 pa_assert(s->monitor_of);
814 state = pa_sink_get_state(s->monitor_of);
816 if (state == PA_SINK_SUSPENDED)
817 return source_set_state(s, PA_SOURCE_SUSPENDED);
819 pa_assert(PA_SINK_IS_OPENED(state));
821 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
824 /* Called from main context */
825 pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q) {
826 pa_source_output *o, *n;
829 pa_source_assert_ref(s);
830 pa_assert_ctl_context();
831 pa_assert(PA_SOURCE_IS_LINKED(s->state));
836 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = n) {
837 n = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx));
839 pa_source_output_ref(o);
841 if (pa_source_output_start_move(o) >= 0)
844 pa_source_output_unref(o);
850 /* Called from main context */
851 void pa_source_move_all_finish(pa_source *s, pa_queue *q, bool save) {
854 pa_source_assert_ref(s);
855 pa_assert_ctl_context();
856 pa_assert(PA_SOURCE_IS_LINKED(s->state));
859 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
860 if (pa_source_output_finish_move(o, s, save) < 0)
861 pa_source_output_fail_move(o);
863 pa_source_output_unref(o);
866 pa_queue_free(q, NULL);
869 /* Called from main context */
870 void pa_source_move_all_fail(pa_queue *q) {
873 pa_assert_ctl_context();
876 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
877 pa_source_output_fail_move(o);
878 pa_source_output_unref(o);
881 pa_queue_free(q, NULL);
884 /* Called from IO thread context */
885 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
889 pa_source_assert_ref(s);
890 pa_source_assert_io_context(s);
891 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
896 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
899 pa_log_debug("Processing rewind...");
901 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
902 pa_source_output_assert_ref(o);
903 pa_source_output_process_rewind(o, nbytes);
907 /* Called from IO thread context */
908 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
912 pa_source_assert_ref(s);
913 pa_source_assert_io_context(s);
914 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
917 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
920 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
921 pa_memchunk vchunk = *chunk;
923 pa_memblock_ref(vchunk.memblock);
924 pa_memchunk_make_writable(&vchunk, 0);
926 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
927 pa_silence_memchunk(&vchunk, &s->sample_spec);
929 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
931 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
932 pa_source_output_assert_ref(o);
934 if (!o->thread_info.direct_on_input)
935 pa_source_output_push(o, &vchunk);
938 pa_memblock_unref(vchunk.memblock);
941 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
942 pa_source_output_assert_ref(o);
944 if (!o->thread_info.direct_on_input)
945 pa_source_output_push(o, chunk);
950 /* Called from IO thread context */
951 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
952 pa_source_assert_ref(s);
953 pa_source_assert_io_context(s);
954 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
955 pa_source_output_assert_ref(o);
956 pa_assert(o->thread_info.direct_on_input);
959 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
962 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
963 pa_memchunk vchunk = *chunk;
965 pa_memblock_ref(vchunk.memblock);
966 pa_memchunk_make_writable(&vchunk, 0);
968 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
969 pa_silence_memchunk(&vchunk, &s->sample_spec);
971 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
973 pa_source_output_push(o, &vchunk);
975 pa_memblock_unref(vchunk.memblock);
977 pa_source_output_push(o, chunk);
980 /* Called from main thread */
981 int pa_source_update_rate(pa_source *s, uint32_t rate, bool passthrough) {
983 uint32_t desired_rate = rate;
984 uint32_t default_rate = s->default_sample_rate;
985 uint32_t alternate_rate = s->alternate_sample_rate;
986 bool use_alternate = false;
988 if (rate == s->sample_spec.rate)
991 if (!s->update_rate && !s->monitor_of)
994 if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough)) {
995 pa_log_debug("Default and alternate sample rates are the same.");
999 if (PA_SOURCE_IS_RUNNING(s->state)) {
1000 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u Hz",
1001 s->sample_spec.rate);
1005 if (s->monitor_of) {
1006 if (PA_SINK_IS_RUNNING(s->monitor_of->state)) {
1007 pa_log_info("Cannot update rate, this is a monitor source and the sink is running.");
1012 if (PA_UNLIKELY(!pa_sample_rate_valid(desired_rate)))
1016 pa_assert((default_rate % 4000 == 0) || (default_rate % 11025 == 0));
1017 pa_assert((alternate_rate % 4000 == 0) || (alternate_rate % 11025 == 0));
1019 if (default_rate % 11025 == 0) {
1020 if ((alternate_rate % 4000 == 0) && (desired_rate % 4000 == 0))
1023 /* default is 4000 multiple */
1024 if ((alternate_rate % 11025 == 0) && (desired_rate % 11025 == 0))
1029 desired_rate = alternate_rate;
1031 desired_rate = default_rate;
1033 desired_rate = rate; /* use stream sampling rate, discard default/alternate settings */
1036 if (desired_rate == s->sample_spec.rate)
1039 if (!passthrough && pa_source_used_by(s) > 0)
1042 pa_log_debug("Suspending source %s due to changing the sample rate.", s->name);
1043 pa_source_suspend(s, true, PA_SUSPEND_INTERNAL);
1046 ret = s->update_rate(s, desired_rate);
1048 /* This is a monitor source. */
1050 /* XXX: This code is written with non-passthrough streams in mind. I
1051 * have no idea whether the behaviour with passthrough streams is
1054 uint32_t old_rate = s->sample_spec.rate;
1056 s->sample_spec.rate = desired_rate;
1057 ret = pa_sink_update_rate(s->monitor_of, desired_rate, false);
1060 /* Changing the sink rate failed, roll back the old rate for
1061 * the monitor source. Why did we set the source rate before
1062 * calling pa_sink_update_rate(), you may ask. The reason is
1063 * that pa_sink_update_rate() tries to update the monitor
1064 * source rate, but we are already in the process of updating
1065 * the monitor source rate, so there's a risk of entering an
1066 * infinite loop. Setting the source rate before calling
1067 * pa_sink_update_rate() makes the rate == s->sample_spec.rate
1068 * check in the beginning of this function return early, so we
1070 s->sample_spec.rate = old_rate;
1078 pa_source_output *o;
1080 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1081 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1082 pa_source_output_update_rate(o);
1085 pa_log_info("Changed sampling rate successfully");
1088 pa_source_suspend(s, false, PA_SUSPEND_INTERNAL);
1093 /* Called from main thread */
1094 pa_usec_t pa_source_get_latency(pa_source *s) {
1097 pa_source_assert_ref(s);
1098 pa_assert_ctl_context();
1099 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1101 if (s->state == PA_SOURCE_SUSPENDED)
1104 if (!(s->flags & PA_SOURCE_LATENCY))
1107 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1109 /* usec is unsigned, so check that the offset can be added to usec without
1111 if (-s->latency_offset <= (int64_t) usec)
1112 usec += s->latency_offset;
1119 /* Called from IO thread */
1120 pa_usec_t pa_source_get_latency_within_thread(pa_source *s) {
1124 pa_source_assert_ref(s);
1125 pa_source_assert_io_context(s);
1126 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1128 /* The returned value is supposed to be in the time domain of the sound card! */
1130 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1133 if (!(s->flags & PA_SOURCE_LATENCY))
1136 o = PA_MSGOBJECT(s);
1138 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1140 if (o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1143 /* usec is unsigned, so check that the offset can be added to usec without
1145 if (-s->thread_info.latency_offset <= (int64_t) usec)
1146 usec += s->thread_info.latency_offset;
1153 /* Called from the main thread (and also from the IO thread while the main
1154 * thread is waiting).
1156 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1157 * set. Instead, flat volume mode is detected by checking whether the root source
1158 * has the flag set. */
1159 bool pa_source_flat_volume_enabled(pa_source *s) {
1160 pa_source_assert_ref(s);
1162 s = pa_source_get_master(s);
1165 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1170 /* Called from the main thread (and also from the IO thread while the main
1171 * thread is waiting). */
1172 pa_source *pa_source_get_master(pa_source *s) {
1173 pa_source_assert_ref(s);
1175 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1176 if (PA_UNLIKELY(!s->output_from_master))
1179 s = s->output_from_master->source;
1185 /* Called from main context */
1186 bool pa_source_is_passthrough(pa_source *s) {
1188 pa_source_assert_ref(s);
1190 /* NB Currently only monitor sources support passthrough mode */
1191 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1194 /* Called from main context */
1195 void pa_source_enter_passthrough(pa_source *s) {
1198 /* set the volume to NORM */
1199 s->saved_volume = *pa_source_get_volume(s, true);
1200 s->saved_save_volume = s->save_volume;
1202 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1203 pa_source_set_volume(s, &volume, true, false);
1206 /* Called from main context */
1207 void pa_source_leave_passthrough(pa_source *s) {
1208 /* Restore source volume to what it was before we entered passthrough mode */
1209 pa_source_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
1211 pa_cvolume_init(&s->saved_volume);
1212 s->saved_save_volume = false;
1215 /* Called from main context. */
1216 static void compute_reference_ratio(pa_source_output *o) {
1218 pa_cvolume remapped;
1221 pa_assert(pa_source_flat_volume_enabled(o->source));
1224 * Calculates the reference ratio from the source's reference
1225 * volume. This basically calculates:
1227 * o->reference_ratio = o->volume / o->source->reference_volume
1230 remapped = o->source->reference_volume;
1231 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1233 o->reference_ratio.channels = o->sample_spec.channels;
1235 for (c = 0; c < o->sample_spec.channels; c++) {
1237 /* We don't update when the source volume is 0 anyway */
1238 if (remapped.values[c] <= PA_VOLUME_MUTED)
1241 /* Don't update the reference ratio unless necessary */
1242 if (pa_sw_volume_multiply(
1243 o->reference_ratio.values[c],
1244 remapped.values[c]) == o->volume.values[c])
1247 o->reference_ratio.values[c] = pa_sw_volume_divide(
1248 o->volume.values[c],
1249 remapped.values[c]);
1253 /* Called from main context. Only called for the root source in volume sharing
1254 * cases, except for internal recursive calls. */
1255 static void compute_reference_ratios(pa_source *s) {
1257 pa_source_output *o;
1259 pa_source_assert_ref(s);
1260 pa_assert_ctl_context();
1261 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1262 pa_assert(pa_source_flat_volume_enabled(s));
1264 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1265 compute_reference_ratio(o);
1267 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1268 compute_reference_ratios(o->destination_source);
1272 /* Called from main context. Only called for the root source in volume sharing
1273 * cases, except for internal recursive calls. */
1274 static void compute_real_ratios(pa_source *s) {
1275 pa_source_output *o;
1278 pa_source_assert_ref(s);
1279 pa_assert_ctl_context();
1280 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1281 pa_assert(pa_source_flat_volume_enabled(s));
1283 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1285 pa_cvolume remapped;
1287 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1288 /* The origin source uses volume sharing, so this input's real ratio
1289 * is handled as a special case - the real ratio must be 0 dB, and
1290 * as a result i->soft_volume must equal i->volume_factor. */
1291 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1292 o->soft_volume = o->volume_factor;
1294 compute_real_ratios(o->destination_source);
1300 * This basically calculates:
1302 * i->real_ratio := i->volume / s->real_volume
1303 * i->soft_volume := i->real_ratio * i->volume_factor
1306 remapped = s->real_volume;
1307 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1309 o->real_ratio.channels = o->sample_spec.channels;
1310 o->soft_volume.channels = o->sample_spec.channels;
1312 for (c = 0; c < o->sample_spec.channels; c++) {
1314 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1315 /* We leave o->real_ratio untouched */
1316 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1320 /* Don't lose accuracy unless necessary */
1321 if (pa_sw_volume_multiply(
1322 o->real_ratio.values[c],
1323 remapped.values[c]) != o->volume.values[c])
1325 o->real_ratio.values[c] = pa_sw_volume_divide(
1326 o->volume.values[c],
1327 remapped.values[c]);
1329 o->soft_volume.values[c] = pa_sw_volume_multiply(
1330 o->real_ratio.values[c],
1331 o->volume_factor.values[c]);
1334 /* We don't copy the soft_volume to the thread_info data
1335 * here. That must be done by the caller */
1339 static pa_cvolume *cvolume_remap_minimal_impact(
1341 const pa_cvolume *template,
1342 const pa_channel_map *from,
1343 const pa_channel_map *to) {
1348 pa_assert(template);
1351 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1352 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1354 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1355 * mapping from source output to source volumes:
1357 * If template is a possible remapping from v it is used instead
1358 * of remapping anew.
1360 * If the channel maps don't match we set an all-channel volume on
1361 * the source to ensure that changing a volume on one stream has no
1362 * effect that cannot be compensated for in another stream that
1363 * does not have the same channel map as the source. */
1365 if (pa_channel_map_equal(from, to))
1369 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1374 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1378 /* Called from main thread. Only called for the root source in volume sharing
1379 * cases, except for internal recursive calls. */
1380 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1381 pa_source_output *o;
1384 pa_source_assert_ref(s);
1385 pa_assert(max_volume);
1386 pa_assert(channel_map);
1387 pa_assert(pa_source_flat_volume_enabled(s));
1389 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1390 pa_cvolume remapped;
1392 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1393 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1395 /* Ignore this output. The origin source uses volume sharing, so this
1396 * output's volume will be set to be equal to the root source's real
1397 * volume. Obviously this output's current volume must not then
1398 * affect what the root source's real volume will be. */
1402 remapped = o->volume;
1403 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1404 pa_cvolume_merge(max_volume, max_volume, &remapped);
1408 /* Called from main thread. Only called for the root source in volume sharing
1409 * cases, except for internal recursive calls. */
1410 static bool has_outputs(pa_source *s) {
1411 pa_source_output *o;
1414 pa_source_assert_ref(s);
1416 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1417 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1424 /* Called from main thread. Only called for the root source in volume sharing
1425 * cases, except for internal recursive calls. */
1426 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1427 pa_source_output *o;
1430 pa_source_assert_ref(s);
1431 pa_assert(new_volume);
1432 pa_assert(channel_map);
1434 s->real_volume = *new_volume;
1435 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1437 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1438 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1439 if (pa_source_flat_volume_enabled(s)) {
1440 pa_cvolume old_volume = o->volume;
1442 /* Follow the root source's real volume. */
1443 o->volume = *new_volume;
1444 pa_cvolume_remap(&o->volume, channel_map, &o->channel_map);
1445 compute_reference_ratio(o);
1447 /* The volume changed, let's tell people so */
1448 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1449 if (o->volume_changed)
1450 o->volume_changed(o);
1452 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1456 update_real_volume(o->destination_source, new_volume, channel_map);
1461 /* Called from main thread. Only called for the root source in shared volume
1463 static void compute_real_volume(pa_source *s) {
1464 pa_source_assert_ref(s);
1465 pa_assert_ctl_context();
1466 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1467 pa_assert(pa_source_flat_volume_enabled(s));
1468 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1470 /* This determines the maximum volume of all streams and sets
1471 * s->real_volume accordingly. */
1473 if (!has_outputs(s)) {
1474 /* In the special case that we have no source outputs we leave the
1475 * volume unmodified. */
1476 update_real_volume(s, &s->reference_volume, &s->channel_map);
1480 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1482 /* First let's determine the new maximum volume of all outputs
1483 * connected to this source */
1484 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1485 update_real_volume(s, &s->real_volume, &s->channel_map);
1487 /* Then, let's update the real ratios/soft volumes of all outputs
1488 * connected to this source */
1489 compute_real_ratios(s);
1492 /* Called from main thread. Only called for the root source in shared volume
1493 * cases, except for internal recursive calls. */
1494 static void propagate_reference_volume(pa_source *s) {
1495 pa_source_output *o;
1498 pa_source_assert_ref(s);
1499 pa_assert_ctl_context();
1500 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1501 pa_assert(pa_source_flat_volume_enabled(s));
1503 /* This is called whenever the source volume changes that is not
1504 * caused by a source output volume change. We need to fix up the
1505 * source output volumes accordingly */
1507 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1508 pa_cvolume old_volume;
1510 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1511 propagate_reference_volume(o->destination_source);
1513 /* Since the origin source uses volume sharing, this output's volume
1514 * needs to be updated to match the root source's real volume, but
1515 * that will be done later in update_shared_real_volume(). */
1519 old_volume = o->volume;
1521 /* This basically calculates:
1523 * o->volume := o->reference_volume * o->reference_ratio */
1525 o->volume = s->reference_volume;
1526 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1527 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1529 /* The volume changed, let's tell people so */
1530 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1532 if (o->volume_changed)
1533 o->volume_changed(o);
1535 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1540 /* Called from main thread. Only called for the root source in volume sharing
1541 * cases, except for internal recursive calls. The return value indicates
1542 * whether any reference volume actually changed. */
1543 static bool update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
1545 bool reference_volume_changed;
1546 pa_source_output *o;
1549 pa_source_assert_ref(s);
1550 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1552 pa_assert(channel_map);
1553 pa_assert(pa_cvolume_valid(v));
1556 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1558 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1559 s->reference_volume = volume;
1561 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1563 if (reference_volume_changed)
1564 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1565 else if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1566 /* If the root source's volume doesn't change, then there can't be any
1567 * changes in the other source in the source tree either.
1569 * It's probably theoretically possible that even if the root source's
1570 * volume changes slightly, some filter source doesn't change its volume
1571 * due to rounding errors. If that happens, we still want to propagate
1572 * the changed root source volume to the sources connected to the
1573 * intermediate source that didn't change its volume. This theoretical
1574 * possibility is the reason why we have that !(s->flags &
1575 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1576 * notice even if we returned here false always if
1577 * reference_volume_changed is false. */
1580 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1581 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1582 update_reference_volume(o->destination_source, v, channel_map, false);
1588 /* Called from main thread */
1589 void pa_source_set_volume(
1591 const pa_cvolume *volume,
1595 pa_cvolume new_reference_volume;
1596 pa_source *root_source;
1598 pa_source_assert_ref(s);
1599 pa_assert_ctl_context();
1600 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1601 pa_assert(!volume || pa_cvolume_valid(volume));
1602 pa_assert(volume || pa_source_flat_volume_enabled(s));
1603 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1605 /* make sure we don't change the volume in PASSTHROUGH mode ...
1606 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1607 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1608 pa_log_warn("Cannot change volume, source is monitor of a PASSTHROUGH sink");
1612 /* In case of volume sharing, the volume is set for the root source first,
1613 * from which it's then propagated to the sharing sources. */
1614 root_source = pa_source_get_master(s);
1616 if (PA_UNLIKELY(!root_source))
1619 /* As a special exception we accept mono volumes on all sources --
1620 * even on those with more complex channel maps */
1623 if (pa_cvolume_compatible(volume, &s->sample_spec))
1624 new_reference_volume = *volume;
1626 new_reference_volume = s->reference_volume;
1627 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1630 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1632 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1633 if (pa_source_flat_volume_enabled(root_source)) {
1634 /* OK, propagate this volume change back to the outputs */
1635 propagate_reference_volume(root_source);
1637 /* And now recalculate the real volume */
1638 compute_real_volume(root_source);
1640 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1644 /* If volume is NULL we synchronize the source's real and
1645 * reference volumes with the stream volumes. */
1647 pa_assert(pa_source_flat_volume_enabled(root_source));
1649 /* Ok, let's determine the new real volume */
1650 compute_real_volume(root_source);
1652 /* Let's 'push' the reference volume if necessary */
1653 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_source->real_volume);
1654 /* If the source and it's root don't have the same number of channels, we need to remap */
1655 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1656 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1657 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1659 /* Now that the reference volume is updated, we can update the streams'
1660 * reference ratios. */
1661 compute_reference_ratios(root_source);
1664 if (root_source->set_volume) {
1665 /* If we have a function set_volume(), then we do not apply a
1666 * soft volume by default. However, set_volume() is free to
1667 * apply one to root_source->soft_volume */
1669 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1670 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1671 root_source->set_volume(root_source);
1674 /* If we have no function set_volume(), then the soft volume
1675 * becomes the real volume */
1676 root_source->soft_volume = root_source->real_volume;
1678 /* This tells the source that soft volume and/or real volume changed */
1680 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1683 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1684 * Only to be called by source implementor */
1685 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1687 pa_source_assert_ref(s);
1688 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1690 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1691 pa_source_assert_io_context(s);
1693 pa_assert_ctl_context();
1696 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1698 s->soft_volume = *volume;
1700 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1701 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1703 s->thread_info.soft_volume = s->soft_volume;
1706 /* Called from the main thread. Only called for the root source in volume sharing
1707 * cases, except for internal recursive calls. */
1708 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1709 pa_source_output *o;
1712 pa_source_assert_ref(s);
1713 pa_assert(old_real_volume);
1714 pa_assert_ctl_context();
1715 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1717 /* This is called when the hardware's real volume changes due to
1718 * some external event. We copy the real volume into our
1719 * reference volume and then rebuild the stream volumes based on
1720 * i->real_ratio which should stay fixed. */
1722 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1723 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1726 /* 1. Make the real volume the reference volume */
1727 update_reference_volume(s, &s->real_volume, &s->channel_map, true);
1730 if (pa_source_flat_volume_enabled(s)) {
1732 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1733 pa_cvolume old_volume = o->volume;
1735 /* 2. Since the source's reference and real volumes are equal
1736 * now our ratios should be too. */
1737 o->reference_ratio = o->real_ratio;
1739 /* 3. Recalculate the new stream reference volume based on the
1740 * reference ratio and the sink's reference volume.
1742 * This basically calculates:
1744 * o->volume = s->reference_volume * o->reference_ratio
1746 * This is identical to propagate_reference_volume() */
1747 o->volume = s->reference_volume;
1748 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1749 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1751 /* Notify if something changed */
1752 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1754 if (o->volume_changed)
1755 o->volume_changed(o);
1757 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1760 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1761 propagate_real_volume(o->destination_source, old_real_volume);
1765 /* Something got changed in the hardware. It probably makes sense
1766 * to save changed hw settings given that hw volume changes not
1767 * triggered by PA are almost certainly done by the user. */
1768 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1769 s->save_volume = true;
1772 /* Called from io thread */
1773 void pa_source_update_volume_and_mute(pa_source *s) {
1775 pa_source_assert_io_context(s);
1777 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1780 /* Called from main thread */
1781 const pa_cvolume *pa_source_get_volume(pa_source *s, bool force_refresh) {
1782 pa_source_assert_ref(s);
1783 pa_assert_ctl_context();
1784 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1786 if (s->refresh_volume || force_refresh) {
1787 struct pa_cvolume old_real_volume;
1789 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1791 old_real_volume = s->real_volume;
1793 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1796 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1798 update_real_volume(s, &s->real_volume, &s->channel_map);
1799 propagate_real_volume(s, &old_real_volume);
1802 return &s->reference_volume;
1805 /* Called from main thread. In volume sharing cases, only the root source may
1807 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1808 pa_cvolume old_real_volume;
1810 pa_source_assert_ref(s);
1811 pa_assert_ctl_context();
1812 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1813 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1815 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1817 old_real_volume = s->real_volume;
1818 update_real_volume(s, new_real_volume, &s->channel_map);
1819 propagate_real_volume(s, &old_real_volume);
1822 /* Called from main thread */
1823 void pa_source_set_mute(pa_source *s, bool mute, bool save) {
1826 pa_source_assert_ref(s);
1827 pa_assert_ctl_context();
1828 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1830 old_muted = s->muted;
1832 s->save_muted = (old_muted == s->muted && s->save_muted) || save;
1834 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute)
1837 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1839 if (old_muted != s->muted)
1840 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1843 /* Called from main thread */
1844 bool pa_source_get_mute(pa_source *s, bool force_refresh) {
1846 pa_source_assert_ref(s);
1847 pa_assert_ctl_context();
1848 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1850 if (s->refresh_muted || force_refresh) {
1851 bool old_muted = s->muted;
1853 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_mute)
1856 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, NULL, 0, NULL) == 0);
1858 if (old_muted != s->muted) {
1859 s->save_muted = true;
1861 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1863 /* Make sure the soft mute status stays in sync */
1864 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1871 /* Called from main thread */
1872 void pa_source_mute_changed(pa_source *s, bool new_muted) {
1873 pa_source_assert_ref(s);
1874 pa_assert_ctl_context();
1875 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1877 /* The source implementor may call this if the mute state changed to make sure everyone is notified */
1879 if (s->muted == new_muted)
1882 s->muted = new_muted;
1883 s->save_muted = true;
1885 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1888 /* Called from main thread */
1889 bool pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1890 pa_source_assert_ref(s);
1891 pa_assert_ctl_context();
1894 pa_proplist_update(s->proplist, mode, p);
1896 if (PA_SOURCE_IS_LINKED(s->state)) {
1897 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1898 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1904 /* Called from main thread */
1905 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1906 void pa_source_set_description(pa_source *s, const char *description) {
1908 pa_source_assert_ref(s);
1909 pa_assert_ctl_context();
1911 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1914 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1916 if (old && description && pa_streq(old, description))
1920 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1922 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1924 if (PA_SOURCE_IS_LINKED(s->state)) {
1925 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1926 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1930 /* Called from main thread */
1931 unsigned pa_source_linked_by(pa_source *s) {
1932 pa_source_assert_ref(s);
1933 pa_assert_ctl_context();
1934 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1936 return pa_idxset_size(s->outputs);
1939 /* Called from main thread */
1940 unsigned pa_source_used_by(pa_source *s) {
1943 pa_source_assert_ref(s);
1944 pa_assert_ctl_context();
1945 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1947 ret = pa_idxset_size(s->outputs);
1948 pa_assert(ret >= s->n_corked);
1950 return ret - s->n_corked;
1953 /* Called from main thread */
1954 unsigned pa_source_check_suspend(pa_source *s) {
1956 pa_source_output *o;
1959 pa_source_assert_ref(s);
1960 pa_assert_ctl_context();
1962 if (!PA_SOURCE_IS_LINKED(s->state))
1967 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1968 pa_source_output_state_t st;
1970 st = pa_source_output_get_state(o);
1972 /* We do not assert here. It is perfectly valid for a source output to
1973 * be in the INIT state (i.e. created, marked done but not yet put)
1974 * and we should not care if it's unlinked as it won't contribute
1975 * towards our busy status.
1977 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1980 if (st == PA_SOURCE_OUTPUT_CORKED)
1983 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
1992 /* Called from the IO thread */
1993 static void sync_output_volumes_within_thread(pa_source *s) {
1994 pa_source_output *o;
1997 pa_source_assert_ref(s);
1998 pa_source_assert_io_context(s);
2000 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
2001 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
2004 o->thread_info.soft_volume = o->soft_volume;
2005 //pa_source_output_request_rewind(o, 0, true, false, false);
2009 /* Called from the IO thread. Only called for the root source in volume sharing
2010 * cases, except for internal recursive calls. */
2011 static void set_shared_volume_within_thread(pa_source *s) {
2012 pa_source_output *o;
2015 pa_source_assert_ref(s);
2017 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
2019 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
2020 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
2021 set_shared_volume_within_thread(o->destination_source);
2025 /* Called from IO thread, except when it is not */
2026 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
2027 pa_source *s = PA_SOURCE(object);
2028 pa_source_assert_ref(s);
2030 switch ((pa_source_message_t) code) {
2032 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
2033 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2035 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
2037 if (o->direct_on_input) {
2038 o->thread_info.direct_on_input = o->direct_on_input;
2039 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
2042 pa_assert(!o->thread_info.attached);
2043 o->thread_info.attached = true;
2048 pa_source_output_set_state_within_thread(o, o->state);
2050 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
2051 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2053 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2055 /* We don't just invalidate the requested latency here,
2056 * because if we are in a move we might need to fix up the
2057 * requested latency. */
2058 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2060 /* In flat volume mode we need to update the volume as
2062 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2065 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
2066 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2068 pa_source_output_set_state_within_thread(o, o->state);
2073 pa_assert(o->thread_info.attached);
2074 o->thread_info.attached = false;
2076 if (o->thread_info.direct_on_input) {
2077 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
2078 o->thread_info.direct_on_input = NULL;
2081 if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
2082 pa_source_output_unref(o);
2084 pa_source_invalidate_requested_latency(s, true);
2086 /* In flat volume mode we need to update the volume as
2088 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2091 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
2092 pa_source *root_source = pa_source_get_master(s);
2094 if (PA_LIKELY(root_source))
2095 set_shared_volume_within_thread(root_source);
2100 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
2102 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2104 pa_source_volume_change_push(s);
2106 /* Fall through ... */
2108 case PA_SOURCE_MESSAGE_SET_VOLUME:
2110 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2111 s->thread_info.soft_volume = s->soft_volume;
2114 /* Fall through ... */
2116 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
2117 sync_output_volumes_within_thread(s);
2120 case PA_SOURCE_MESSAGE_GET_VOLUME:
2122 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
2124 pa_source_volume_change_flush(s);
2125 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2128 /* In case source implementor reset SW volume. */
2129 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2130 s->thread_info.soft_volume = s->soft_volume;
2135 case PA_SOURCE_MESSAGE_SET_MUTE:
2137 if (s->thread_info.soft_muted != s->muted) {
2138 s->thread_info.soft_muted = s->muted;
2141 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2146 case PA_SOURCE_MESSAGE_GET_MUTE:
2148 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2153 case PA_SOURCE_MESSAGE_SET_STATE: {
2155 bool suspend_change =
2156 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2157 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
2159 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2161 if (suspend_change) {
2162 pa_source_output *o;
2165 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2166 if (o->suspend_within_thread)
2167 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2173 case PA_SOURCE_MESSAGE_DETACH:
2175 /* Detach all streams */
2176 pa_source_detach_within_thread(s);
2179 case PA_SOURCE_MESSAGE_ATTACH:
2181 /* Reattach all streams */
2182 pa_source_attach_within_thread(s);
2185 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2187 pa_usec_t *usec = userdata;
2188 *usec = pa_source_get_requested_latency_within_thread(s);
2190 /* Yes, that's right, the IO thread will see -1 when no
2191 * explicit requested latency is configured, the main
2192 * thread will see max_latency */
2193 if (*usec == (pa_usec_t) -1)
2194 *usec = s->thread_info.max_latency;
2199 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2200 pa_usec_t *r = userdata;
2202 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2207 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2208 pa_usec_t *r = userdata;
2210 r[0] = s->thread_info.min_latency;
2211 r[1] = s->thread_info.max_latency;
2216 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2218 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2221 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2223 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2226 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2228 *((size_t*) userdata) = s->thread_info.max_rewind;
2231 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2233 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2236 case PA_SOURCE_MESSAGE_GET_LATENCY:
2238 if (s->monitor_of) {
2239 *((pa_usec_t*) userdata) = 0;
2243 /* Implementors need to overwrite this implementation! */
2246 case PA_SOURCE_MESSAGE_SET_PORT:
2248 pa_assert(userdata);
2250 struct source_message_set_port *msg_data = userdata;
2251 msg_data->ret = s->set_port(s, msg_data->port);
2255 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2256 /* This message is sent from IO-thread and handled in main thread. */
2257 pa_assert_ctl_context();
2259 /* Make sure we're not messing with main thread when no longer linked */
2260 if (!PA_SOURCE_IS_LINKED(s->state))
2263 pa_source_get_volume(s, true);
2264 pa_source_get_mute(s, true);
2267 case PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET:
2268 s->thread_info.latency_offset = offset;
2271 case PA_SOURCE_MESSAGE_MAX:
2278 /* Called from main thread */
2279 int pa_source_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
2284 pa_core_assert_ref(c);
2285 pa_assert_ctl_context();
2286 pa_assert(cause != 0);
2288 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2291 if (source->monitor_of)
2294 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2301 /* Called from main thread */
2302 void pa_source_detach(pa_source *s) {
2303 pa_source_assert_ref(s);
2304 pa_assert_ctl_context();
2305 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2307 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL) == 0);
2310 /* Called from main thread */
2311 void pa_source_attach(pa_source *s) {
2312 pa_source_assert_ref(s);
2313 pa_assert_ctl_context();
2314 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2316 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
2319 /* Called from IO thread */
2320 void pa_source_detach_within_thread(pa_source *s) {
2321 pa_source_output *o;
2324 pa_source_assert_ref(s);
2325 pa_source_assert_io_context(s);
2326 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2328 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2333 /* Called from IO thread */
2334 void pa_source_attach_within_thread(pa_source *s) {
2335 pa_source_output *o;
2338 pa_source_assert_ref(s);
2339 pa_source_assert_io_context(s);
2340 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2342 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2347 /* Called from IO thread */
2348 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2349 pa_usec_t result = (pa_usec_t) -1;
2350 pa_source_output *o;
2353 pa_source_assert_ref(s);
2354 pa_source_assert_io_context(s);
2356 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2357 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2359 if (s->thread_info.requested_latency_valid)
2360 return s->thread_info.requested_latency;
2362 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2363 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2364 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2365 result = o->thread_info.requested_source_latency;
2367 if (result != (pa_usec_t) -1)
2368 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2370 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2371 /* Only cache this if we are fully set up */
2372 s->thread_info.requested_latency = result;
2373 s->thread_info.requested_latency_valid = true;
2379 /* Called from main thread */
2380 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2383 pa_source_assert_ref(s);
2384 pa_assert_ctl_context();
2385 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2387 if (s->state == PA_SOURCE_SUSPENDED)
2390 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2395 /* Called from IO thread */
2396 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2397 pa_source_output *o;
2400 pa_source_assert_ref(s);
2401 pa_source_assert_io_context(s);
2403 if (max_rewind == s->thread_info.max_rewind)
2406 s->thread_info.max_rewind = max_rewind;
2408 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2409 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2410 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2413 /* Called from main thread */
2414 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2415 pa_source_assert_ref(s);
2416 pa_assert_ctl_context();
2418 if (PA_SOURCE_IS_LINKED(s->state))
2419 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2421 pa_source_set_max_rewind_within_thread(s, max_rewind);
2424 /* Called from IO thread */
2425 void pa_source_invalidate_requested_latency(pa_source *s, bool dynamic) {
2426 pa_source_output *o;
2429 pa_source_assert_ref(s);
2430 pa_source_assert_io_context(s);
2432 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2433 s->thread_info.requested_latency_valid = false;
2437 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2439 if (s->update_requested_latency)
2440 s->update_requested_latency(s);
2442 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2443 if (o->update_source_requested_latency)
2444 o->update_source_requested_latency(o);
2448 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2451 /* Called from main thread */
2452 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2453 pa_source_assert_ref(s);
2454 pa_assert_ctl_context();
2456 /* min_latency == 0: no limit
2457 * min_latency anything else: specified limit
2459 * Similar for max_latency */
2461 if (min_latency < ABSOLUTE_MIN_LATENCY)
2462 min_latency = ABSOLUTE_MIN_LATENCY;
2464 if (max_latency <= 0 ||
2465 max_latency > ABSOLUTE_MAX_LATENCY)
2466 max_latency = ABSOLUTE_MAX_LATENCY;
2468 pa_assert(min_latency <= max_latency);
2470 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2471 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2472 max_latency == ABSOLUTE_MAX_LATENCY) ||
2473 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2475 if (PA_SOURCE_IS_LINKED(s->state)) {
2481 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2483 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2486 /* Called from main thread */
2487 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2488 pa_source_assert_ref(s);
2489 pa_assert_ctl_context();
2490 pa_assert(min_latency);
2491 pa_assert(max_latency);
2493 if (PA_SOURCE_IS_LINKED(s->state)) {
2494 pa_usec_t r[2] = { 0, 0 };
2496 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2498 *min_latency = r[0];
2499 *max_latency = r[1];
2501 *min_latency = s->thread_info.min_latency;
2502 *max_latency = s->thread_info.max_latency;
2506 /* Called from IO thread, and from main thread before pa_source_put() is called */
2507 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2508 pa_source_assert_ref(s);
2509 pa_source_assert_io_context(s);
2511 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2512 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2513 pa_assert(min_latency <= max_latency);
2515 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2516 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2517 max_latency == ABSOLUTE_MAX_LATENCY) ||
2518 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2521 if (s->thread_info.min_latency == min_latency &&
2522 s->thread_info.max_latency == max_latency)
2525 s->thread_info.min_latency = min_latency;
2526 s->thread_info.max_latency = max_latency;
2528 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2529 pa_source_output *o;
2532 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2533 if (o->update_source_latency_range)
2534 o->update_source_latency_range(o);
2537 pa_source_invalidate_requested_latency(s, false);
2540 /* Called from main thread, before the source is put */
2541 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2542 pa_source_assert_ref(s);
2543 pa_assert_ctl_context();
2545 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2546 pa_assert(latency == 0);
2550 if (latency < ABSOLUTE_MIN_LATENCY)
2551 latency = ABSOLUTE_MIN_LATENCY;
2553 if (latency > ABSOLUTE_MAX_LATENCY)
2554 latency = ABSOLUTE_MAX_LATENCY;
2556 if (PA_SOURCE_IS_LINKED(s->state))
2557 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2559 s->thread_info.fixed_latency = latency;
2562 /* Called from main thread */
2563 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2566 pa_source_assert_ref(s);
2567 pa_assert_ctl_context();
2569 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2572 if (PA_SOURCE_IS_LINKED(s->state))
2573 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2575 latency = s->thread_info.fixed_latency;
2580 /* Called from IO thread */
2581 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2582 pa_source_assert_ref(s);
2583 pa_source_assert_io_context(s);
2585 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2586 pa_assert(latency == 0);
2587 s->thread_info.fixed_latency = 0;
2592 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2593 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2595 if (s->thread_info.fixed_latency == latency)
2598 s->thread_info.fixed_latency = latency;
2600 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2601 pa_source_output *o;
2604 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2605 if (o->update_source_fixed_latency)
2606 o->update_source_fixed_latency(o);
2609 pa_source_invalidate_requested_latency(s, false);
2612 /* Called from main thread */
2613 void pa_source_set_latency_offset(pa_source *s, int64_t offset) {
2614 pa_source_assert_ref(s);
2616 s->latency_offset = offset;
2618 if (PA_SOURCE_IS_LINKED(s->state))
2619 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET, NULL, offset, NULL) == 0);
2621 s->thread_info.latency_offset = offset;
2624 /* Called from main thread */
2625 size_t pa_source_get_max_rewind(pa_source *s) {
2627 pa_assert_ctl_context();
2628 pa_source_assert_ref(s);
2630 if (!PA_SOURCE_IS_LINKED(s->state))
2631 return s->thread_info.max_rewind;
2633 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2638 /* Called from main context */
2639 int pa_source_set_port(pa_source *s, const char *name, bool save) {
2640 pa_device_port *port;
2643 pa_source_assert_ref(s);
2644 pa_assert_ctl_context();
2647 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2648 return -PA_ERR_NOTIMPLEMENTED;
2652 return -PA_ERR_NOENTITY;
2654 if (!(port = pa_hashmap_get(s->ports, name)))
2655 return -PA_ERR_NOENTITY;
2657 if (s->active_port == port) {
2658 s->save_port = s->save_port || save;
2662 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2663 struct source_message_set_port msg = { .port = port, .ret = 0 };
2664 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2668 ret = s->set_port(s, port);
2671 return -PA_ERR_NOENTITY;
2673 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2675 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2677 s->active_port = port;
2678 s->save_port = save;
2680 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2685 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2687 /* Called from the IO thread. */
2688 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2689 pa_source_volume_change *c;
2690 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2691 c = pa_xnew(pa_source_volume_change, 1);
2693 PA_LLIST_INIT(pa_source_volume_change, c);
2695 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2699 /* Called from the IO thread. */
2700 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2702 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2706 /* Called from the IO thread. */
2707 void pa_source_volume_change_push(pa_source *s) {
2708 pa_source_volume_change *c = NULL;
2709 pa_source_volume_change *nc = NULL;
2710 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2712 const char *direction = NULL;
2715 nc = pa_source_volume_change_new(s);
2717 /* NOTE: There is already more different volumes in pa_source that I can remember.
2718 * Adding one more volume for HW would get us rid of this, but I am trying
2719 * to survive with the ones we already have. */
2720 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2722 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2723 pa_log_debug("Volume not changing");
2724 pa_source_volume_change_free(nc);
2728 nc->at = pa_source_get_latency_within_thread(s);
2729 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2731 if (s->thread_info.volume_changes_tail) {
2732 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2733 /* If volume is going up let's do it a bit late. If it is going
2734 * down let's do it a bit early. */
2735 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2736 if (nc->at + safety_margin > c->at) {
2737 nc->at += safety_margin;
2742 else if (nc->at - safety_margin > c->at) {
2743 nc->at -= safety_margin;
2751 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2752 nc->at += safety_margin;
2755 nc->at -= safety_margin;
2758 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2761 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2764 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2766 /* We can ignore volume events that came earlier but should happen later than this. */
2767 PA_LLIST_FOREACH(c, nc->next) {
2768 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2769 pa_source_volume_change_free(c);
2772 s->thread_info.volume_changes_tail = nc;
2775 /* Called from the IO thread. */
2776 static void pa_source_volume_change_flush(pa_source *s) {
2777 pa_source_volume_change *c = s->thread_info.volume_changes;
2779 s->thread_info.volume_changes = NULL;
2780 s->thread_info.volume_changes_tail = NULL;
2782 pa_source_volume_change *next = c->next;
2783 pa_source_volume_change_free(c);
2788 /* Called from the IO thread. */
2789 bool pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2795 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2801 pa_assert(s->write_volume);
2803 now = pa_rtclock_now();
2805 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2806 pa_source_volume_change *c = s->thread_info.volume_changes;
2807 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2808 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2809 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2811 s->thread_info.current_hw_volume = c->hw_volume;
2812 pa_source_volume_change_free(c);
2818 if (s->thread_info.volume_changes) {
2820 *usec_to_next = s->thread_info.volume_changes->at - now;
2821 if (pa_log_ratelimit(PA_LOG_DEBUG))
2822 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2827 s->thread_info.volume_changes_tail = NULL;
2832 /* Called from the main thread */
2833 /* Gets the list of formats supported by the source. The members and idxset must
2834 * be freed by the caller. */
2835 pa_idxset* pa_source_get_formats(pa_source *s) {
2840 if (s->get_formats) {
2841 /* Source supports format query, all is good */
2842 ret = s->get_formats(s);
2844 /* Source doesn't support format query, so assume it does PCM */
2845 pa_format_info *f = pa_format_info_new();
2846 f->encoding = PA_ENCODING_PCM;
2848 ret = pa_idxset_new(NULL, NULL);
2849 pa_idxset_put(ret, f, NULL);
2855 /* Called from the main thread */
2856 /* Checks if the source can accept this format */
2857 bool pa_source_check_format(pa_source *s, pa_format_info *f) {
2858 pa_idxset *formats = NULL;
2864 formats = pa_source_get_formats(s);
2867 pa_format_info *finfo_device;
2870 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2871 if (pa_format_info_is_compatible(finfo_device, f)) {
2877 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
2883 /* Called from the main thread */
2884 /* Calculates the intersection between formats supported by the source and
2885 * in_formats, and returns these, in the order of the source's formats. */
2886 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2887 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2888 pa_format_info *f_source, *f_in;
2893 if (!in_formats || pa_idxset_isempty(in_formats))
2896 source_formats = pa_source_get_formats(s);
2898 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2899 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2900 if (pa_format_info_is_compatible(f_source, f_in))
2901 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2907 pa_idxset_free(source_formats, (pa_free_cb_t) pa_format_info_free);