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(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
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, (pa_free_cb_t) pa_device_port_unref);
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 (!s->active_port || p->priority > s->active_port->priority)
301 s->latency_offset = s->active_port->latency_offset;
303 s->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(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
317 s->thread_info.soft_volume = s->soft_volume;
318 s->thread_info.soft_muted = s->muted;
319 s->thread_info.state = s->state;
320 s->thread_info.max_rewind = 0;
321 s->thread_info.requested_latency_valid = false;
322 s->thread_info.requested_latency = 0;
323 s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
324 s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
325 s->thread_info.fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
327 PA_LLIST_HEAD_INIT(pa_source_volume_change, s->thread_info.volume_changes);
328 s->thread_info.volume_changes_tail = NULL;
329 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
330 s->thread_info.volume_change_safety_margin = core->deferred_volume_safety_margin_usec;
331 s->thread_info.volume_change_extra_delay = core->deferred_volume_extra_delay_usec;
332 s->thread_info.latency_offset = s->latency_offset;
334 /* FIXME: This should probably be moved to pa_source_put() */
335 pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
338 pa_assert_se(pa_idxset_put(s->card->sources, s, NULL) >= 0);
340 pt = pa_proplist_to_string_sep(s->proplist, "\n ");
341 pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s\n %s",
344 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
345 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
352 /* Called from main context */
353 static int source_set_state(pa_source *s, pa_source_state_t state) {
356 pa_source_state_t original_state;
359 pa_assert_ctl_context();
361 if (s->state == state)
364 original_state = s->state;
367 (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
368 (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
371 if ((ret = s->set_state(s, state)) < 0)
375 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
378 s->set_state(s, original_state);
385 if (state != PA_SOURCE_UNLINKED) { /* if we enter UNLINKED state pa_source_unlink() will fire the appropriate events */
386 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
387 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
390 if (suspend_change) {
394 /* We're suspending or resuming, tell everyone about it */
396 PA_IDXSET_FOREACH(o, s->outputs, idx)
397 if (s->state == PA_SOURCE_SUSPENDED &&
398 (o->flags & PA_SOURCE_OUTPUT_KILL_ON_SUSPEND))
399 pa_source_output_kill(o);
401 o->suspend(o, state == PA_SOURCE_SUSPENDED);
407 void pa_source_set_get_volume_callback(pa_source *s, pa_source_cb_t cb) {
413 void pa_source_set_set_volume_callback(pa_source *s, pa_source_cb_t cb) {
414 pa_source_flags_t flags;
417 pa_assert(!s->write_volume || cb);
421 /* Save the current flags so we can tell if they've changed */
425 /* The source implementor is responsible for setting decibel volume support */
426 s->flags |= PA_SOURCE_HW_VOLUME_CTRL;
428 s->flags &= ~PA_SOURCE_HW_VOLUME_CTRL;
429 /* See note below in pa_source_put() about volume sharing and decibel volumes */
430 pa_source_enable_decibel_volume(s, !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
433 /* If the flags have changed after init, let any clients know via a change event */
434 if (s->state != PA_SOURCE_INIT && flags != s->flags)
435 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
438 void pa_source_set_write_volume_callback(pa_source *s, pa_source_cb_t cb) {
439 pa_source_flags_t flags;
442 pa_assert(!cb || s->set_volume);
444 s->write_volume = cb;
446 /* Save the current flags so we can tell if they've changed */
450 s->flags |= PA_SOURCE_DEFERRED_VOLUME;
452 s->flags &= ~PA_SOURCE_DEFERRED_VOLUME;
454 /* If the flags have changed after init, let any clients know via a change event */
455 if (s->state != PA_SOURCE_INIT && flags != s->flags)
456 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
459 void pa_source_set_get_mute_callback(pa_source *s, pa_source_cb_t cb) {
465 void pa_source_set_set_mute_callback(pa_source *s, pa_source_cb_t cb) {
466 pa_source_flags_t flags;
472 /* Save the current flags so we can tell if they've changed */
476 s->flags |= PA_SOURCE_HW_MUTE_CTRL;
478 s->flags &= ~PA_SOURCE_HW_MUTE_CTRL;
480 /* If the flags have changed after init, let any clients know via a change event */
481 if (s->state != PA_SOURCE_INIT && flags != s->flags)
482 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
485 static void enable_flat_volume(pa_source *s, bool enable) {
486 pa_source_flags_t flags;
490 /* Always follow the overall user preference here */
491 enable = enable && s->core->flat_volumes;
493 /* Save the current flags so we can tell if they've changed */
497 s->flags |= PA_SOURCE_FLAT_VOLUME;
499 s->flags &= ~PA_SOURCE_FLAT_VOLUME;
501 /* If the flags have changed after init, let any clients know via a change event */
502 if (s->state != PA_SOURCE_INIT && flags != s->flags)
503 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
506 void pa_source_enable_decibel_volume(pa_source *s, bool enable) {
507 pa_source_flags_t flags;
511 /* Save the current flags so we can tell if they've changed */
515 s->flags |= PA_SOURCE_DECIBEL_VOLUME;
516 enable_flat_volume(s, true);
518 s->flags &= ~PA_SOURCE_DECIBEL_VOLUME;
519 enable_flat_volume(s, false);
522 /* If the flags have changed after init, let any clients know via a change event */
523 if (s->state != PA_SOURCE_INIT && flags != s->flags)
524 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
527 /* Called from main context */
528 void pa_source_put(pa_source *s) {
529 pa_source_assert_ref(s);
530 pa_assert_ctl_context();
532 pa_assert(s->state == PA_SOURCE_INIT);
533 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || s->output_from_master);
535 /* The following fields must be initialized properly when calling _put() */
536 pa_assert(s->asyncmsgq);
537 pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
539 /* Generally, flags should be initialized via pa_source_new(). As a
540 * special exception we allow some volume related flags to be set
541 * between _new() and _put() by the callback setter functions above.
543 * Thus we implement a couple safeguards here which ensure the above
544 * setters were used (or at least the implementor made manual changes
545 * in a compatible way).
547 * Note: All of these flags set here can change over the life time
549 pa_assert(!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) || s->set_volume);
550 pa_assert(!(s->flags & PA_SOURCE_DEFERRED_VOLUME) || s->write_volume);
551 pa_assert(!(s->flags & PA_SOURCE_HW_MUTE_CTRL) || s->set_mute);
553 /* XXX: Currently decibel volume is disabled for all sources that use volume
554 * sharing. When the master source supports decibel volume, it would be good
555 * to have the flag also in the filter source, but currently we don't do that
556 * so that the flags of the filter source never change when it's moved from
557 * a master source to another. One solution for this problem would be to
558 * remove user-visible volume altogether from filter sources when volume
559 * sharing is used, but the current approach was easier to implement... */
560 /* We always support decibel volumes in software, otherwise we leave it to
561 * the source implementor to set this flag as needed.
563 * Note: This flag can also change over the life time of the source. */
564 if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
565 pa_source_enable_decibel_volume(s, true);
567 /* If the source implementor support DB volumes by itself, we should always
568 * try and enable flat volumes too */
569 if ((s->flags & PA_SOURCE_DECIBEL_VOLUME))
570 enable_flat_volume(s, true);
572 if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
573 pa_source *root_source = pa_source_get_master(s);
575 pa_assert(PA_LIKELY(root_source));
577 s->reference_volume = root_source->reference_volume;
578 pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
580 s->real_volume = root_source->real_volume;
581 pa_cvolume_remap(&s->real_volume, &root_source->channel_map, &s->channel_map);
583 /* We assume that if the sink implementor changed the default
584 * volume he did so in real_volume, because that is the usual
585 * place where he is supposed to place his changes. */
586 s->reference_volume = s->real_volume;
588 s->thread_info.soft_volume = s->soft_volume;
589 s->thread_info.soft_muted = s->muted;
590 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
592 pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL)
593 || (s->base_volume == PA_VOLUME_NORM
594 && ((s->flags & PA_SOURCE_DECIBEL_VOLUME || (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)))));
595 pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
596 pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == (s->thread_info.fixed_latency != 0));
598 if (s->suspend_cause)
599 pa_assert_se(source_set_state(s, PA_SOURCE_SUSPENDED) == 0);
601 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
603 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
604 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
607 /* Called from main context */
608 void pa_source_unlink(pa_source *s) {
610 pa_source_output *o, *j = NULL;
613 pa_assert_ctl_context();
615 /* See pa_sink_unlink() for a couple of comments how this function
618 linked = PA_SOURCE_IS_LINKED(s->state);
621 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
623 if (s->state != PA_SOURCE_UNLINKED)
624 pa_namereg_unregister(s->core, s->name);
625 pa_idxset_remove_by_data(s->core->sources, s, NULL);
628 pa_idxset_remove_by_data(s->card->sources, s, NULL);
630 while ((o = pa_idxset_first(s->outputs, NULL))) {
632 pa_source_output_kill(o);
637 source_set_state(s, PA_SOURCE_UNLINKED);
639 s->state = PA_SOURCE_UNLINKED;
644 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
645 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
649 /* Called from main context */
650 static void source_free(pa_object *o) {
651 pa_source *s = PA_SOURCE(o);
654 pa_assert_ctl_context();
655 pa_assert(pa_source_refcnt(s) == 0);
657 if (PA_SOURCE_IS_LINKED(s->state))
660 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
662 pa_idxset_free(s->outputs, NULL);
663 pa_hashmap_free(s->thread_info.outputs, (pa_free_cb_t) pa_source_output_unref);
665 if (s->silence.memblock)
666 pa_memblock_unref(s->silence.memblock);
672 pa_proplist_free(s->proplist);
675 pa_hashmap_free(s->ports, (pa_free_cb_t) pa_device_port_unref);
680 /* Called from main context, and not while the IO thread is active, please */
681 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
682 pa_source_assert_ref(s);
683 pa_assert_ctl_context();
688 /* Called from main context, and not while the IO thread is active, please */
689 void pa_source_update_flags(pa_source *s, pa_source_flags_t mask, pa_source_flags_t value) {
690 pa_source_flags_t old_flags;
691 pa_source_output *output;
694 pa_source_assert_ref(s);
695 pa_assert_ctl_context();
697 /* For now, allow only a minimal set of flags to be changed. */
698 pa_assert((mask & ~(PA_SOURCE_DYNAMIC_LATENCY|PA_SOURCE_LATENCY)) == 0);
700 old_flags = s->flags;
701 s->flags = (s->flags & ~mask) | (value & mask);
703 if (s->flags == old_flags)
706 if ((s->flags & PA_SOURCE_LATENCY) != (old_flags & PA_SOURCE_LATENCY))
707 pa_log_debug("Source %s: LATENCY flag %s.", s->name, (s->flags & PA_SOURCE_LATENCY) ? "enabled" : "disabled");
709 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY) != (old_flags & PA_SOURCE_DYNAMIC_LATENCY))
710 pa_log_debug("Source %s: DYNAMIC_LATENCY flag %s.",
711 s->name, (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ? "enabled" : "disabled");
713 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
714 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_FLAGS_CHANGED], s);
716 PA_IDXSET_FOREACH(output, s->outputs, idx) {
717 if (output->destination_source)
718 pa_source_update_flags(output->destination_source, mask, value);
722 /* Called from IO context, or before _put() from main context */
723 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
724 pa_source_assert_ref(s);
725 pa_source_assert_io_context(s);
727 s->thread_info.rtpoll = p;
730 /* Called from main context */
731 int pa_source_update_status(pa_source*s) {
732 pa_source_assert_ref(s);
733 pa_assert_ctl_context();
734 pa_assert(PA_SOURCE_IS_LINKED(s->state));
736 if (s->state == PA_SOURCE_SUSPENDED)
739 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
742 /* Called from any context - must be threadsafe */
743 void pa_source_set_mixer_dirty(pa_source *s, bool is_dirty) {
744 pa_atomic_store(&s->mixer_dirty, is_dirty ? 1 : 0);
747 /* Called from main context */
748 int pa_source_suspend(pa_source *s, bool suspend, pa_suspend_cause_t cause) {
749 pa_source_assert_ref(s);
750 pa_assert_ctl_context();
751 pa_assert(PA_SOURCE_IS_LINKED(s->state));
752 pa_assert(cause != 0);
754 if (s->monitor_of && cause != PA_SUSPEND_PASSTHROUGH)
755 return -PA_ERR_NOTSUPPORTED;
758 s->suspend_cause |= cause;
760 s->suspend_cause &= ~cause;
762 if (!(s->suspend_cause & PA_SUSPEND_SESSION) && (pa_atomic_load(&s->mixer_dirty) != 0)) {
763 /* This might look racy but isn't: If somebody sets mixer_dirty exactly here,
764 it'll be handled just fine. */
765 pa_source_set_mixer_dirty(s, false);
766 pa_log_debug("Mixer is now accessible. Updating alsa mixer settings.");
767 if (s->active_port && s->set_port) {
768 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
769 struct source_message_set_port msg = { .port = s->active_port, .ret = 0 };
770 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
773 s->set_port(s, s->active_port);
783 if ((pa_source_get_state(s) == PA_SOURCE_SUSPENDED) == !!s->suspend_cause)
786 pa_log_debug("Suspend cause of source %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
788 if (s->suspend_cause)
789 return source_set_state(s, PA_SOURCE_SUSPENDED);
791 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
794 /* Called from main context */
795 int pa_source_sync_suspend(pa_source *s) {
796 pa_sink_state_t state;
798 pa_source_assert_ref(s);
799 pa_assert_ctl_context();
800 pa_assert(PA_SOURCE_IS_LINKED(s->state));
801 pa_assert(s->monitor_of);
803 state = pa_sink_get_state(s->monitor_of);
805 if (state == PA_SINK_SUSPENDED)
806 return source_set_state(s, PA_SOURCE_SUSPENDED);
808 pa_assert(PA_SINK_IS_OPENED(state));
810 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
813 /* Called from main context */
814 pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q) {
815 pa_source_output *o, *n;
818 pa_source_assert_ref(s);
819 pa_assert_ctl_context();
820 pa_assert(PA_SOURCE_IS_LINKED(s->state));
825 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = n) {
826 n = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx));
828 pa_source_output_ref(o);
830 if (pa_source_output_start_move(o) >= 0)
833 pa_source_output_unref(o);
839 /* Called from main context */
840 void pa_source_move_all_finish(pa_source *s, pa_queue *q, bool save) {
843 pa_source_assert_ref(s);
844 pa_assert_ctl_context();
845 pa_assert(PA_SOURCE_IS_LINKED(s->state));
848 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
849 if (pa_source_output_finish_move(o, s, save) < 0)
850 pa_source_output_fail_move(o);
852 pa_source_output_unref(o);
855 pa_queue_free(q, NULL);
858 /* Called from main context */
859 void pa_source_move_all_fail(pa_queue *q) {
862 pa_assert_ctl_context();
865 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
866 pa_source_output_fail_move(o);
867 pa_source_output_unref(o);
870 pa_queue_free(q, NULL);
873 /* Called from IO thread context */
874 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
878 pa_source_assert_ref(s);
879 pa_source_assert_io_context(s);
880 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
885 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
888 pa_log_debug("Processing rewind...");
890 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
891 pa_source_output_assert_ref(o);
892 pa_source_output_process_rewind(o, nbytes);
896 /* Called from IO thread context */
897 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
901 pa_source_assert_ref(s);
902 pa_source_assert_io_context(s);
903 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
906 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
909 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
910 pa_memchunk vchunk = *chunk;
912 pa_memblock_ref(vchunk.memblock);
913 pa_memchunk_make_writable(&vchunk, 0);
915 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
916 pa_silence_memchunk(&vchunk, &s->sample_spec);
918 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
920 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
921 pa_source_output_assert_ref(o);
923 if (!o->thread_info.direct_on_input)
924 pa_source_output_push(o, &vchunk);
927 pa_memblock_unref(vchunk.memblock);
930 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
931 pa_source_output_assert_ref(o);
933 if (!o->thread_info.direct_on_input)
934 pa_source_output_push(o, chunk);
939 /* Called from IO thread context */
940 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
941 pa_source_assert_ref(s);
942 pa_source_assert_io_context(s);
943 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
944 pa_source_output_assert_ref(o);
945 pa_assert(o->thread_info.direct_on_input);
948 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
951 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
952 pa_memchunk vchunk = *chunk;
954 pa_memblock_ref(vchunk.memblock);
955 pa_memchunk_make_writable(&vchunk, 0);
957 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
958 pa_silence_memchunk(&vchunk, &s->sample_spec);
960 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
962 pa_source_output_push(o, &vchunk);
964 pa_memblock_unref(vchunk.memblock);
966 pa_source_output_push(o, chunk);
969 /* Called from main thread */
970 int pa_source_update_rate(pa_source *s, uint32_t rate, bool passthrough) {
972 uint32_t desired_rate = rate;
973 uint32_t default_rate = s->default_sample_rate;
974 uint32_t alternate_rate = s->alternate_sample_rate;
975 bool use_alternate = false;
977 if (rate == s->sample_spec.rate)
980 if (!s->update_rate && !s->monitor_of)
983 if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough)) {
984 pa_log_debug("Default and alternate sample rates are the same.");
988 if (PA_SOURCE_IS_RUNNING(s->state)) {
989 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u Hz",
990 s->sample_spec.rate);
995 if (PA_SINK_IS_RUNNING(s->monitor_of->state)) {
996 pa_log_info("Cannot update rate, this is a monitor source and the sink is running.");
1001 if (PA_UNLIKELY (desired_rate < 8000 ||
1002 desired_rate > PA_RATE_MAX))
1006 pa_assert((default_rate % 4000 == 0) || (default_rate % 11025 == 0));
1007 pa_assert((alternate_rate % 4000 == 0) || (alternate_rate % 11025 == 0));
1009 if (default_rate % 11025 == 0) {
1010 if ((alternate_rate % 4000 == 0) && (desired_rate % 4000 == 0))
1013 /* default is 4000 multiple */
1014 if ((alternate_rate % 11025 == 0) && (desired_rate % 11025 == 0))
1019 desired_rate = alternate_rate;
1021 desired_rate = default_rate;
1023 desired_rate = rate; /* use stream sampling rate, discard default/alternate settings */
1026 if (desired_rate == s->sample_spec.rate)
1029 if (!passthrough && pa_source_used_by(s) > 0)
1032 pa_log_debug("Suspending source %s due to changing the sample rate.", s->name);
1033 pa_source_suspend(s, true, PA_SUSPEND_INTERNAL);
1036 ret = s->update_rate(s, desired_rate);
1038 /* This is a monitor source. */
1040 /* XXX: This code is written with non-passthrough streams in mind. I
1041 * have no idea whether the behaviour with passthrough streams is
1044 uint32_t old_rate = s->sample_spec.rate;
1046 s->sample_spec.rate = desired_rate;
1047 ret = pa_sink_update_rate(s->monitor_of, desired_rate, false);
1050 /* Changing the sink rate failed, roll back the old rate for
1051 * the monitor source. Why did we set the source rate before
1052 * calling pa_sink_update_rate(), you may ask. The reason is
1053 * that pa_sink_update_rate() tries to update the monitor
1054 * source rate, but we are already in the process of updating
1055 * the monitor source rate, so there's a risk of entering an
1056 * infinite loop. Setting the source rate before calling
1057 * pa_sink_update_rate() makes the rate == s->sample_spec.rate
1058 * check in the beginning of this function return early, so we
1060 s->sample_spec.rate = old_rate;
1068 pa_source_output *o;
1070 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1071 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1072 pa_source_output_update_rate(o);
1075 pa_log_info("Changed sampling rate successfully");
1078 pa_source_suspend(s, false, PA_SUSPEND_INTERNAL);
1083 /* Called from main thread */
1084 pa_usec_t pa_source_get_latency(pa_source *s) {
1087 pa_source_assert_ref(s);
1088 pa_assert_ctl_context();
1089 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1091 if (s->state == PA_SOURCE_SUSPENDED)
1094 if (!(s->flags & PA_SOURCE_LATENCY))
1097 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1099 /* usec is unsigned, so check that the offset can be added to usec without
1101 if (-s->latency_offset <= (int64_t) usec)
1102 usec += s->latency_offset;
1109 /* Called from IO thread */
1110 pa_usec_t pa_source_get_latency_within_thread(pa_source *s) {
1114 pa_source_assert_ref(s);
1115 pa_source_assert_io_context(s);
1116 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1118 /* The returned value is supposed to be in the time domain of the sound card! */
1120 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1123 if (!(s->flags & PA_SOURCE_LATENCY))
1126 o = PA_MSGOBJECT(s);
1128 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1130 if (o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1133 /* usec is unsigned, so check that the offset can be added to usec without
1135 if (-s->thread_info.latency_offset <= (int64_t) usec)
1136 usec += s->thread_info.latency_offset;
1143 /* Called from the main thread (and also from the IO thread while the main
1144 * thread is waiting).
1146 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1147 * set. Instead, flat volume mode is detected by checking whether the root source
1148 * has the flag set. */
1149 bool pa_source_flat_volume_enabled(pa_source *s) {
1150 pa_source_assert_ref(s);
1152 s = pa_source_get_master(s);
1155 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1160 /* Called from the main thread (and also from the IO thread while the main
1161 * thread is waiting). */
1162 pa_source *pa_source_get_master(pa_source *s) {
1163 pa_source_assert_ref(s);
1165 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1166 if (PA_UNLIKELY(!s->output_from_master))
1169 s = s->output_from_master->source;
1175 /* Called from main context */
1176 bool pa_source_is_passthrough(pa_source *s) {
1178 pa_source_assert_ref(s);
1180 /* NB Currently only monitor sources support passthrough mode */
1181 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1184 /* Called from main context */
1185 void pa_source_enter_passthrough(pa_source *s) {
1188 /* set the volume to NORM */
1189 s->saved_volume = *pa_source_get_volume(s, true);
1190 s->saved_save_volume = s->save_volume;
1192 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1193 pa_source_set_volume(s, &volume, true, false);
1196 /* Called from main context */
1197 void pa_source_leave_passthrough(pa_source *s) {
1198 /* Restore source volume to what it was before we entered passthrough mode */
1199 pa_source_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
1201 pa_cvolume_init(&s->saved_volume);
1202 s->saved_save_volume = false;
1205 /* Called from main context. */
1206 static void compute_reference_ratio(pa_source_output *o) {
1208 pa_cvolume remapped;
1211 pa_assert(pa_source_flat_volume_enabled(o->source));
1214 * Calculates the reference ratio from the source's reference
1215 * volume. This basically calculates:
1217 * o->reference_ratio = o->volume / o->source->reference_volume
1220 remapped = o->source->reference_volume;
1221 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1223 o->reference_ratio.channels = o->sample_spec.channels;
1225 for (c = 0; c < o->sample_spec.channels; c++) {
1227 /* We don't update when the source volume is 0 anyway */
1228 if (remapped.values[c] <= PA_VOLUME_MUTED)
1231 /* Don't update the reference ratio unless necessary */
1232 if (pa_sw_volume_multiply(
1233 o->reference_ratio.values[c],
1234 remapped.values[c]) == o->volume.values[c])
1237 o->reference_ratio.values[c] = pa_sw_volume_divide(
1238 o->volume.values[c],
1239 remapped.values[c]);
1243 /* Called from main context. Only called for the root source in volume sharing
1244 * cases, except for internal recursive calls. */
1245 static void compute_reference_ratios(pa_source *s) {
1247 pa_source_output *o;
1249 pa_source_assert_ref(s);
1250 pa_assert_ctl_context();
1251 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1252 pa_assert(pa_source_flat_volume_enabled(s));
1254 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1255 compute_reference_ratio(o);
1257 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1258 compute_reference_ratios(o->destination_source);
1262 /* Called from main context. Only called for the root source in volume sharing
1263 * cases, except for internal recursive calls. */
1264 static void compute_real_ratios(pa_source *s) {
1265 pa_source_output *o;
1268 pa_source_assert_ref(s);
1269 pa_assert_ctl_context();
1270 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1271 pa_assert(pa_source_flat_volume_enabled(s));
1273 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1275 pa_cvolume remapped;
1277 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1278 /* The origin source uses volume sharing, so this input's real ratio
1279 * is handled as a special case - the real ratio must be 0 dB, and
1280 * as a result i->soft_volume must equal i->volume_factor. */
1281 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1282 o->soft_volume = o->volume_factor;
1284 compute_real_ratios(o->destination_source);
1290 * This basically calculates:
1292 * i->real_ratio := i->volume / s->real_volume
1293 * i->soft_volume := i->real_ratio * i->volume_factor
1296 remapped = s->real_volume;
1297 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1299 o->real_ratio.channels = o->sample_spec.channels;
1300 o->soft_volume.channels = o->sample_spec.channels;
1302 for (c = 0; c < o->sample_spec.channels; c++) {
1304 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1305 /* We leave o->real_ratio untouched */
1306 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1310 /* Don't lose accuracy unless necessary */
1311 if (pa_sw_volume_multiply(
1312 o->real_ratio.values[c],
1313 remapped.values[c]) != o->volume.values[c])
1315 o->real_ratio.values[c] = pa_sw_volume_divide(
1316 o->volume.values[c],
1317 remapped.values[c]);
1319 o->soft_volume.values[c] = pa_sw_volume_multiply(
1320 o->real_ratio.values[c],
1321 o->volume_factor.values[c]);
1324 /* We don't copy the soft_volume to the thread_info data
1325 * here. That must be done by the caller */
1329 static pa_cvolume *cvolume_remap_minimal_impact(
1331 const pa_cvolume *template,
1332 const pa_channel_map *from,
1333 const pa_channel_map *to) {
1338 pa_assert(template);
1341 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1342 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1344 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1345 * mapping from source output to source volumes:
1347 * If template is a possible remapping from v it is used instead
1348 * of remapping anew.
1350 * If the channel maps don't match we set an all-channel volume on
1351 * the source to ensure that changing a volume on one stream has no
1352 * effect that cannot be compensated for in another stream that
1353 * does not have the same channel map as the source. */
1355 if (pa_channel_map_equal(from, to))
1359 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1364 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1368 /* Called from main thread. Only called for the root source in volume sharing
1369 * cases, except for internal recursive calls. */
1370 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1371 pa_source_output *o;
1374 pa_source_assert_ref(s);
1375 pa_assert(max_volume);
1376 pa_assert(channel_map);
1377 pa_assert(pa_source_flat_volume_enabled(s));
1379 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1380 pa_cvolume remapped;
1382 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1383 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1385 /* Ignore this output. The origin source uses volume sharing, so this
1386 * output's volume will be set to be equal to the root source's real
1387 * volume. Obviously this output's current volume must not then
1388 * affect what the root source's real volume will be. */
1392 remapped = o->volume;
1393 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1394 pa_cvolume_merge(max_volume, max_volume, &remapped);
1398 /* Called from main thread. Only called for the root source in volume sharing
1399 * cases, except for internal recursive calls. */
1400 static bool has_outputs(pa_source *s) {
1401 pa_source_output *o;
1404 pa_source_assert_ref(s);
1406 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1407 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1414 /* Called from main thread. Only called for the root source in volume sharing
1415 * cases, except for internal recursive calls. */
1416 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1417 pa_source_output *o;
1420 pa_source_assert_ref(s);
1421 pa_assert(new_volume);
1422 pa_assert(channel_map);
1424 s->real_volume = *new_volume;
1425 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1427 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1428 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1429 if (pa_source_flat_volume_enabled(s)) {
1430 pa_cvolume old_volume = o->volume;
1432 /* Follow the root source's real volume. */
1433 o->volume = *new_volume;
1434 pa_cvolume_remap(&o->volume, channel_map, &o->channel_map);
1435 compute_reference_ratio(o);
1437 /* The volume changed, let's tell people so */
1438 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1439 if (o->volume_changed)
1440 o->volume_changed(o);
1442 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1446 update_real_volume(o->destination_source, new_volume, channel_map);
1451 /* Called from main thread. Only called for the root source in shared volume
1453 static void compute_real_volume(pa_source *s) {
1454 pa_source_assert_ref(s);
1455 pa_assert_ctl_context();
1456 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1457 pa_assert(pa_source_flat_volume_enabled(s));
1458 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1460 /* This determines the maximum volume of all streams and sets
1461 * s->real_volume accordingly. */
1463 if (!has_outputs(s)) {
1464 /* In the special case that we have no source outputs we leave the
1465 * volume unmodified. */
1466 update_real_volume(s, &s->reference_volume, &s->channel_map);
1470 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1472 /* First let's determine the new maximum volume of all outputs
1473 * connected to this source */
1474 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1475 update_real_volume(s, &s->real_volume, &s->channel_map);
1477 /* Then, let's update the real ratios/soft volumes of all outputs
1478 * connected to this source */
1479 compute_real_ratios(s);
1482 /* Called from main thread. Only called for the root source in shared volume
1483 * cases, except for internal recursive calls. */
1484 static void propagate_reference_volume(pa_source *s) {
1485 pa_source_output *o;
1488 pa_source_assert_ref(s);
1489 pa_assert_ctl_context();
1490 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1491 pa_assert(pa_source_flat_volume_enabled(s));
1493 /* This is called whenever the source volume changes that is not
1494 * caused by a source output volume change. We need to fix up the
1495 * source output volumes accordingly */
1497 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1498 pa_cvolume old_volume;
1500 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1501 propagate_reference_volume(o->destination_source);
1503 /* Since the origin source uses volume sharing, this output's volume
1504 * needs to be updated to match the root source's real volume, but
1505 * that will be done later in update_shared_real_volume(). */
1509 old_volume = o->volume;
1511 /* This basically calculates:
1513 * o->volume := o->reference_volume * o->reference_ratio */
1515 o->volume = s->reference_volume;
1516 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1517 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1519 /* The volume changed, let's tell people so */
1520 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1522 if (o->volume_changed)
1523 o->volume_changed(o);
1525 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1530 /* Called from main thread. Only called for the root source in volume sharing
1531 * cases, except for internal recursive calls. The return value indicates
1532 * whether any reference volume actually changed. */
1533 static bool update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
1535 bool reference_volume_changed;
1536 pa_source_output *o;
1539 pa_source_assert_ref(s);
1540 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1542 pa_assert(channel_map);
1543 pa_assert(pa_cvolume_valid(v));
1546 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1548 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1549 s->reference_volume = volume;
1551 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1553 if (reference_volume_changed)
1554 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1555 else if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1556 /* If the root source's volume doesn't change, then there can't be any
1557 * changes in the other source in the source tree either.
1559 * It's probably theoretically possible that even if the root source's
1560 * volume changes slightly, some filter source doesn't change its volume
1561 * due to rounding errors. If that happens, we still want to propagate
1562 * the changed root source volume to the sources connected to the
1563 * intermediate source that didn't change its volume. This theoretical
1564 * possibility is the reason why we have that !(s->flags &
1565 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1566 * notice even if we returned here false always if
1567 * reference_volume_changed is false. */
1570 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1571 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1572 update_reference_volume(o->destination_source, v, channel_map, false);
1578 /* Called from main thread */
1579 void pa_source_set_volume(
1581 const pa_cvolume *volume,
1585 pa_cvolume new_reference_volume;
1586 pa_source *root_source;
1588 pa_source_assert_ref(s);
1589 pa_assert_ctl_context();
1590 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1591 pa_assert(!volume || pa_cvolume_valid(volume));
1592 pa_assert(volume || pa_source_flat_volume_enabled(s));
1593 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1595 /* make sure we don't change the volume in PASSTHROUGH mode ...
1596 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1597 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1598 pa_log_warn("Cannot change volume, source is monitor of a PASSTHROUGH sink");
1602 /* In case of volume sharing, the volume is set for the root source first,
1603 * from which it's then propagated to the sharing sources. */
1604 root_source = pa_source_get_master(s);
1606 if (PA_UNLIKELY(!root_source))
1609 /* As a special exception we accept mono volumes on all sources --
1610 * even on those with more complex channel maps */
1613 if (pa_cvolume_compatible(volume, &s->sample_spec))
1614 new_reference_volume = *volume;
1616 new_reference_volume = s->reference_volume;
1617 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1620 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1622 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1623 if (pa_source_flat_volume_enabled(root_source)) {
1624 /* OK, propagate this volume change back to the outputs */
1625 propagate_reference_volume(root_source);
1627 /* And now recalculate the real volume */
1628 compute_real_volume(root_source);
1630 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1634 /* If volume is NULL we synchronize the source's real and
1635 * reference volumes with the stream volumes. */
1637 pa_assert(pa_source_flat_volume_enabled(root_source));
1639 /* Ok, let's determine the new real volume */
1640 compute_real_volume(root_source);
1642 /* Let's 'push' the reference volume if necessary */
1643 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_source->real_volume);
1644 /* If the source and it's root don't have the same number of channels, we need to remap */
1645 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1646 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1647 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1649 /* Now that the reference volume is updated, we can update the streams'
1650 * reference ratios. */
1651 compute_reference_ratios(root_source);
1654 if (root_source->set_volume) {
1655 /* If we have a function set_volume(), then we do not apply a
1656 * soft volume by default. However, set_volume() is free to
1657 * apply one to root_source->soft_volume */
1659 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1660 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1661 root_source->set_volume(root_source);
1664 /* If we have no function set_volume(), then the soft volume
1665 * becomes the real volume */
1666 root_source->soft_volume = root_source->real_volume;
1668 /* This tells the source that soft volume and/or real volume changed */
1670 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1673 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1674 * Only to be called by source implementor */
1675 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1677 pa_source_assert_ref(s);
1678 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1680 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1681 pa_source_assert_io_context(s);
1683 pa_assert_ctl_context();
1686 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1688 s->soft_volume = *volume;
1690 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1691 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1693 s->thread_info.soft_volume = s->soft_volume;
1696 /* Called from the main thread. Only called for the root source in volume sharing
1697 * cases, except for internal recursive calls. */
1698 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1699 pa_source_output *o;
1702 pa_source_assert_ref(s);
1703 pa_assert(old_real_volume);
1704 pa_assert_ctl_context();
1705 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1707 /* This is called when the hardware's real volume changes due to
1708 * some external event. We copy the real volume into our
1709 * reference volume and then rebuild the stream volumes based on
1710 * i->real_ratio which should stay fixed. */
1712 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1713 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1716 /* 1. Make the real volume the reference volume */
1717 update_reference_volume(s, &s->real_volume, &s->channel_map, true);
1720 if (pa_source_flat_volume_enabled(s)) {
1722 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1723 pa_cvolume old_volume = o->volume;
1725 /* 2. Since the source's reference and real volumes are equal
1726 * now our ratios should be too. */
1727 o->reference_ratio = o->real_ratio;
1729 /* 3. Recalculate the new stream reference volume based on the
1730 * reference ratio and the sink's reference volume.
1732 * This basically calculates:
1734 * o->volume = s->reference_volume * o->reference_ratio
1736 * This is identical to propagate_reference_volume() */
1737 o->volume = s->reference_volume;
1738 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1739 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1741 /* Notify if something changed */
1742 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1744 if (o->volume_changed)
1745 o->volume_changed(o);
1747 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1750 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1751 propagate_real_volume(o->destination_source, old_real_volume);
1755 /* Something got changed in the hardware. It probably makes sense
1756 * to save changed hw settings given that hw volume changes not
1757 * triggered by PA are almost certainly done by the user. */
1758 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1759 s->save_volume = true;
1762 /* Called from io thread */
1763 void pa_source_update_volume_and_mute(pa_source *s) {
1765 pa_source_assert_io_context(s);
1767 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1770 /* Called from main thread */
1771 const pa_cvolume *pa_source_get_volume(pa_source *s, bool force_refresh) {
1772 pa_source_assert_ref(s);
1773 pa_assert_ctl_context();
1774 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1776 if (s->refresh_volume || force_refresh) {
1777 struct pa_cvolume old_real_volume;
1779 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1781 old_real_volume = s->real_volume;
1783 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1786 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1788 update_real_volume(s, &s->real_volume, &s->channel_map);
1789 propagate_real_volume(s, &old_real_volume);
1792 return &s->reference_volume;
1795 /* Called from main thread. In volume sharing cases, only the root source may
1797 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1798 pa_cvolume old_real_volume;
1800 pa_source_assert_ref(s);
1801 pa_assert_ctl_context();
1802 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1803 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1805 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1807 old_real_volume = s->real_volume;
1808 update_real_volume(s, new_real_volume, &s->channel_map);
1809 propagate_real_volume(s, &old_real_volume);
1812 /* Called from main thread */
1813 void pa_source_set_mute(pa_source *s, bool mute, bool save) {
1816 pa_source_assert_ref(s);
1817 pa_assert_ctl_context();
1818 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1820 old_muted = s->muted;
1822 s->save_muted = (old_muted == s->muted && s->save_muted) || save;
1824 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute)
1827 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1829 if (old_muted != s->muted)
1830 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1833 /* Called from main thread */
1834 bool pa_source_get_mute(pa_source *s, bool force_refresh) {
1836 pa_source_assert_ref(s);
1837 pa_assert_ctl_context();
1838 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1840 if (s->refresh_muted || force_refresh) {
1841 bool old_muted = s->muted;
1843 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_mute)
1846 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, NULL, 0, NULL) == 0);
1848 if (old_muted != s->muted) {
1849 s->save_muted = true;
1851 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1853 /* Make sure the soft mute status stays in sync */
1854 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1861 /* Called from main thread */
1862 void pa_source_mute_changed(pa_source *s, bool new_muted) {
1863 pa_source_assert_ref(s);
1864 pa_assert_ctl_context();
1865 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1867 /* The source implementor may call this if the mute state changed to make sure everyone is notified */
1869 if (s->muted == new_muted)
1872 s->muted = new_muted;
1873 s->save_muted = true;
1875 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1878 /* Called from main thread */
1879 bool pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1880 pa_source_assert_ref(s);
1881 pa_assert_ctl_context();
1884 pa_proplist_update(s->proplist, mode, p);
1886 if (PA_SOURCE_IS_LINKED(s->state)) {
1887 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1888 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1894 /* Called from main thread */
1895 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1896 void pa_source_set_description(pa_source *s, const char *description) {
1898 pa_source_assert_ref(s);
1899 pa_assert_ctl_context();
1901 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1904 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1906 if (old && description && pa_streq(old, description))
1910 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1912 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1914 if (PA_SOURCE_IS_LINKED(s->state)) {
1915 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1916 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1920 /* Called from main thread */
1921 unsigned pa_source_linked_by(pa_source *s) {
1922 pa_source_assert_ref(s);
1923 pa_assert_ctl_context();
1924 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1926 return pa_idxset_size(s->outputs);
1929 /* Called from main thread */
1930 unsigned pa_source_used_by(pa_source *s) {
1933 pa_source_assert_ref(s);
1934 pa_assert_ctl_context();
1935 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1937 ret = pa_idxset_size(s->outputs);
1938 pa_assert(ret >= s->n_corked);
1940 return ret - s->n_corked;
1943 /* Called from main thread */
1944 unsigned pa_source_check_suspend(pa_source *s) {
1946 pa_source_output *o;
1949 pa_source_assert_ref(s);
1950 pa_assert_ctl_context();
1952 if (!PA_SOURCE_IS_LINKED(s->state))
1957 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1958 pa_source_output_state_t st;
1960 st = pa_source_output_get_state(o);
1962 /* We do not assert here. It is perfectly valid for a source output to
1963 * be in the INIT state (i.e. created, marked done but not yet put)
1964 * and we should not care if it's unlinked as it won't contribute
1965 * towards our busy status.
1967 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1970 if (st == PA_SOURCE_OUTPUT_CORKED)
1973 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
1982 /* Called from the IO thread */
1983 static void sync_output_volumes_within_thread(pa_source *s) {
1984 pa_source_output *o;
1987 pa_source_assert_ref(s);
1988 pa_source_assert_io_context(s);
1990 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1991 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
1994 o->thread_info.soft_volume = o->soft_volume;
1995 //pa_source_output_request_rewind(o, 0, true, false, false);
1999 /* Called from the IO thread. Only called for the root source in volume sharing
2000 * cases, except for internal recursive calls. */
2001 static void set_shared_volume_within_thread(pa_source *s) {
2002 pa_source_output *o;
2005 pa_source_assert_ref(s);
2007 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
2009 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
2010 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
2011 set_shared_volume_within_thread(o->destination_source);
2015 /* Called from IO thread, except when it is not */
2016 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
2017 pa_source *s = PA_SOURCE(object);
2018 pa_source_assert_ref(s);
2020 switch ((pa_source_message_t) code) {
2022 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
2023 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2025 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
2027 if (o->direct_on_input) {
2028 o->thread_info.direct_on_input = o->direct_on_input;
2029 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
2032 pa_assert(!o->thread_info.attached);
2033 o->thread_info.attached = true;
2038 pa_source_output_set_state_within_thread(o, o->state);
2040 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
2041 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2043 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2045 /* We don't just invalidate the requested latency here,
2046 * because if we are in a move we might need to fix up the
2047 * requested latency. */
2048 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2050 /* In flat volume mode we need to update the volume as
2052 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2055 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
2056 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2058 pa_source_output_set_state_within_thread(o, o->state);
2063 pa_assert(o->thread_info.attached);
2064 o->thread_info.attached = false;
2066 if (o->thread_info.direct_on_input) {
2067 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
2068 o->thread_info.direct_on_input = NULL;
2071 if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
2072 pa_source_output_unref(o);
2074 pa_source_invalidate_requested_latency(s, true);
2076 /* In flat volume mode we need to update the volume as
2078 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2081 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
2082 pa_source *root_source = pa_source_get_master(s);
2084 if (PA_LIKELY(root_source))
2085 set_shared_volume_within_thread(root_source);
2090 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
2092 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2094 pa_source_volume_change_push(s);
2096 /* Fall through ... */
2098 case PA_SOURCE_MESSAGE_SET_VOLUME:
2100 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2101 s->thread_info.soft_volume = s->soft_volume;
2104 /* Fall through ... */
2106 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
2107 sync_output_volumes_within_thread(s);
2110 case PA_SOURCE_MESSAGE_GET_VOLUME:
2112 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
2114 pa_source_volume_change_flush(s);
2115 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2118 /* In case source implementor reset SW volume. */
2119 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2120 s->thread_info.soft_volume = s->soft_volume;
2125 case PA_SOURCE_MESSAGE_SET_MUTE:
2127 if (s->thread_info.soft_muted != s->muted) {
2128 s->thread_info.soft_muted = s->muted;
2131 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2136 case PA_SOURCE_MESSAGE_GET_MUTE:
2138 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2143 case PA_SOURCE_MESSAGE_SET_STATE: {
2145 bool suspend_change =
2146 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2147 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
2149 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2151 if (suspend_change) {
2152 pa_source_output *o;
2155 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2156 if (o->suspend_within_thread)
2157 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2163 case PA_SOURCE_MESSAGE_DETACH:
2165 /* Detach all streams */
2166 pa_source_detach_within_thread(s);
2169 case PA_SOURCE_MESSAGE_ATTACH:
2171 /* Reattach all streams */
2172 pa_source_attach_within_thread(s);
2175 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2177 pa_usec_t *usec = userdata;
2178 *usec = pa_source_get_requested_latency_within_thread(s);
2180 /* Yes, that's right, the IO thread will see -1 when no
2181 * explicit requested latency is configured, the main
2182 * thread will see max_latency */
2183 if (*usec == (pa_usec_t) -1)
2184 *usec = s->thread_info.max_latency;
2189 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2190 pa_usec_t *r = userdata;
2192 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2197 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2198 pa_usec_t *r = userdata;
2200 r[0] = s->thread_info.min_latency;
2201 r[1] = s->thread_info.max_latency;
2206 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2208 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2211 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2213 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2216 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2218 *((size_t*) userdata) = s->thread_info.max_rewind;
2221 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2223 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2226 case PA_SOURCE_MESSAGE_GET_LATENCY:
2228 if (s->monitor_of) {
2229 *((pa_usec_t*) userdata) = 0;
2233 /* Implementors need to overwrite this implementation! */
2236 case PA_SOURCE_MESSAGE_SET_PORT:
2238 pa_assert(userdata);
2240 struct source_message_set_port *msg_data = userdata;
2241 msg_data->ret = s->set_port(s, msg_data->port);
2245 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2246 /* This message is sent from IO-thread and handled in main thread. */
2247 pa_assert_ctl_context();
2249 /* Make sure we're not messing with main thread when no longer linked */
2250 if (!PA_SOURCE_IS_LINKED(s->state))
2253 pa_source_get_volume(s, true);
2254 pa_source_get_mute(s, true);
2257 case PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET:
2258 s->thread_info.latency_offset = offset;
2261 case PA_SOURCE_MESSAGE_MAX:
2268 /* Called from main thread */
2269 int pa_source_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
2274 pa_core_assert_ref(c);
2275 pa_assert_ctl_context();
2276 pa_assert(cause != 0);
2278 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2281 if (source->monitor_of)
2284 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2291 /* Called from main thread */
2292 void pa_source_detach(pa_source *s) {
2293 pa_source_assert_ref(s);
2294 pa_assert_ctl_context();
2295 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2297 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL) == 0);
2300 /* Called from main thread */
2301 void pa_source_attach(pa_source *s) {
2302 pa_source_assert_ref(s);
2303 pa_assert_ctl_context();
2304 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2306 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
2309 /* Called from IO thread */
2310 void pa_source_detach_within_thread(pa_source *s) {
2311 pa_source_output *o;
2314 pa_source_assert_ref(s);
2315 pa_source_assert_io_context(s);
2316 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2318 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2323 /* Called from IO thread */
2324 void pa_source_attach_within_thread(pa_source *s) {
2325 pa_source_output *o;
2328 pa_source_assert_ref(s);
2329 pa_source_assert_io_context(s);
2330 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2332 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2337 /* Called from IO thread */
2338 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2339 pa_usec_t result = (pa_usec_t) -1;
2340 pa_source_output *o;
2343 pa_source_assert_ref(s);
2344 pa_source_assert_io_context(s);
2346 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2347 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2349 if (s->thread_info.requested_latency_valid)
2350 return s->thread_info.requested_latency;
2352 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2353 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2354 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2355 result = o->thread_info.requested_source_latency;
2357 if (result != (pa_usec_t) -1)
2358 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2360 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2361 /* Only cache this if we are fully set up */
2362 s->thread_info.requested_latency = result;
2363 s->thread_info.requested_latency_valid = true;
2369 /* Called from main thread */
2370 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2373 pa_source_assert_ref(s);
2374 pa_assert_ctl_context();
2375 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2377 if (s->state == PA_SOURCE_SUSPENDED)
2380 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2385 /* Called from IO thread */
2386 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2387 pa_source_output *o;
2390 pa_source_assert_ref(s);
2391 pa_source_assert_io_context(s);
2393 if (max_rewind == s->thread_info.max_rewind)
2396 s->thread_info.max_rewind = max_rewind;
2398 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2399 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2400 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2403 /* Called from main thread */
2404 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2405 pa_source_assert_ref(s);
2406 pa_assert_ctl_context();
2408 if (PA_SOURCE_IS_LINKED(s->state))
2409 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2411 pa_source_set_max_rewind_within_thread(s, max_rewind);
2414 /* Called from IO thread */
2415 void pa_source_invalidate_requested_latency(pa_source *s, bool dynamic) {
2416 pa_source_output *o;
2419 pa_source_assert_ref(s);
2420 pa_source_assert_io_context(s);
2422 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2423 s->thread_info.requested_latency_valid = false;
2427 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2429 if (s->update_requested_latency)
2430 s->update_requested_latency(s);
2432 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2433 if (o->update_source_requested_latency)
2434 o->update_source_requested_latency(o);
2438 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2441 /* Called from main thread */
2442 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2443 pa_source_assert_ref(s);
2444 pa_assert_ctl_context();
2446 /* min_latency == 0: no limit
2447 * min_latency anything else: specified limit
2449 * Similar for max_latency */
2451 if (min_latency < ABSOLUTE_MIN_LATENCY)
2452 min_latency = ABSOLUTE_MIN_LATENCY;
2454 if (max_latency <= 0 ||
2455 max_latency > ABSOLUTE_MAX_LATENCY)
2456 max_latency = ABSOLUTE_MAX_LATENCY;
2458 pa_assert(min_latency <= max_latency);
2460 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2461 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2462 max_latency == ABSOLUTE_MAX_LATENCY) ||
2463 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2465 if (PA_SOURCE_IS_LINKED(s->state)) {
2471 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2473 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2476 /* Called from main thread */
2477 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2478 pa_source_assert_ref(s);
2479 pa_assert_ctl_context();
2480 pa_assert(min_latency);
2481 pa_assert(max_latency);
2483 if (PA_SOURCE_IS_LINKED(s->state)) {
2484 pa_usec_t r[2] = { 0, 0 };
2486 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2488 *min_latency = r[0];
2489 *max_latency = r[1];
2491 *min_latency = s->thread_info.min_latency;
2492 *max_latency = s->thread_info.max_latency;
2496 /* Called from IO thread, and from main thread before pa_source_put() is called */
2497 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2498 pa_source_assert_ref(s);
2499 pa_source_assert_io_context(s);
2501 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2502 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2503 pa_assert(min_latency <= max_latency);
2505 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2506 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2507 max_latency == ABSOLUTE_MAX_LATENCY) ||
2508 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2511 if (s->thread_info.min_latency == min_latency &&
2512 s->thread_info.max_latency == max_latency)
2515 s->thread_info.min_latency = min_latency;
2516 s->thread_info.max_latency = max_latency;
2518 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2519 pa_source_output *o;
2522 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2523 if (o->update_source_latency_range)
2524 o->update_source_latency_range(o);
2527 pa_source_invalidate_requested_latency(s, false);
2530 /* Called from main thread, before the source is put */
2531 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2532 pa_source_assert_ref(s);
2533 pa_assert_ctl_context();
2535 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2536 pa_assert(latency == 0);
2540 if (latency < ABSOLUTE_MIN_LATENCY)
2541 latency = ABSOLUTE_MIN_LATENCY;
2543 if (latency > ABSOLUTE_MAX_LATENCY)
2544 latency = ABSOLUTE_MAX_LATENCY;
2546 if (PA_SOURCE_IS_LINKED(s->state))
2547 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2549 s->thread_info.fixed_latency = latency;
2552 /* Called from main thread */
2553 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2556 pa_source_assert_ref(s);
2557 pa_assert_ctl_context();
2559 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2562 if (PA_SOURCE_IS_LINKED(s->state))
2563 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2565 latency = s->thread_info.fixed_latency;
2570 /* Called from IO thread */
2571 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2572 pa_source_assert_ref(s);
2573 pa_source_assert_io_context(s);
2575 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2576 pa_assert(latency == 0);
2577 s->thread_info.fixed_latency = 0;
2582 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2583 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2585 if (s->thread_info.fixed_latency == latency)
2588 s->thread_info.fixed_latency = latency;
2590 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2591 pa_source_output *o;
2594 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2595 if (o->update_source_fixed_latency)
2596 o->update_source_fixed_latency(o);
2599 pa_source_invalidate_requested_latency(s, false);
2602 /* Called from main thread */
2603 void pa_source_set_latency_offset(pa_source *s, int64_t offset) {
2604 pa_source_assert_ref(s);
2606 s->latency_offset = offset;
2608 if (PA_SOURCE_IS_LINKED(s->state))
2609 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET, NULL, offset, NULL) == 0);
2611 s->thread_info.latency_offset = offset;
2614 /* Called from main thread */
2615 size_t pa_source_get_max_rewind(pa_source *s) {
2617 pa_assert_ctl_context();
2618 pa_source_assert_ref(s);
2620 if (!PA_SOURCE_IS_LINKED(s->state))
2621 return s->thread_info.max_rewind;
2623 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2628 /* Called from main context */
2629 int pa_source_set_port(pa_source *s, const char *name, bool save) {
2630 pa_device_port *port;
2633 pa_source_assert_ref(s);
2634 pa_assert_ctl_context();
2637 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2638 return -PA_ERR_NOTIMPLEMENTED;
2642 return -PA_ERR_NOENTITY;
2644 if (!(port = pa_hashmap_get(s->ports, name)))
2645 return -PA_ERR_NOENTITY;
2647 if (s->active_port == port) {
2648 s->save_port = s->save_port || save;
2652 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2653 struct source_message_set_port msg = { .port = port, .ret = 0 };
2654 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2658 ret = s->set_port(s, port);
2661 return -PA_ERR_NOENTITY;
2663 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2665 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2667 s->active_port = port;
2668 s->save_port = save;
2670 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2675 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2677 /* Called from the IO thread. */
2678 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2679 pa_source_volume_change *c;
2680 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2681 c = pa_xnew(pa_source_volume_change, 1);
2683 PA_LLIST_INIT(pa_source_volume_change, c);
2685 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2689 /* Called from the IO thread. */
2690 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2692 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2696 /* Called from the IO thread. */
2697 void pa_source_volume_change_push(pa_source *s) {
2698 pa_source_volume_change *c = NULL;
2699 pa_source_volume_change *nc = NULL;
2700 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2702 const char *direction = NULL;
2705 nc = pa_source_volume_change_new(s);
2707 /* NOTE: There is already more different volumes in pa_source that I can remember.
2708 * Adding one more volume for HW would get us rid of this, but I am trying
2709 * to survive with the ones we already have. */
2710 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2712 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2713 pa_log_debug("Volume not changing");
2714 pa_source_volume_change_free(nc);
2718 nc->at = pa_source_get_latency_within_thread(s);
2719 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2721 if (s->thread_info.volume_changes_tail) {
2722 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2723 /* If volume is going up let's do it a bit late. If it is going
2724 * down let's do it a bit early. */
2725 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2726 if (nc->at + safety_margin > c->at) {
2727 nc->at += safety_margin;
2732 else if (nc->at - safety_margin > c->at) {
2733 nc->at -= safety_margin;
2741 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2742 nc->at += safety_margin;
2745 nc->at -= safety_margin;
2748 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2751 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2754 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2756 /* We can ignore volume events that came earlier but should happen later than this. */
2757 PA_LLIST_FOREACH(c, nc->next) {
2758 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2759 pa_source_volume_change_free(c);
2762 s->thread_info.volume_changes_tail = nc;
2765 /* Called from the IO thread. */
2766 static void pa_source_volume_change_flush(pa_source *s) {
2767 pa_source_volume_change *c = s->thread_info.volume_changes;
2769 s->thread_info.volume_changes = NULL;
2770 s->thread_info.volume_changes_tail = NULL;
2772 pa_source_volume_change *next = c->next;
2773 pa_source_volume_change_free(c);
2778 /* Called from the IO thread. */
2779 bool pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2785 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2791 pa_assert(s->write_volume);
2793 now = pa_rtclock_now();
2795 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2796 pa_source_volume_change *c = s->thread_info.volume_changes;
2797 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2798 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2799 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2801 s->thread_info.current_hw_volume = c->hw_volume;
2802 pa_source_volume_change_free(c);
2808 if (s->thread_info.volume_changes) {
2810 *usec_to_next = s->thread_info.volume_changes->at - now;
2811 if (pa_log_ratelimit(PA_LOG_DEBUG))
2812 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2817 s->thread_info.volume_changes_tail = NULL;
2822 /* Called from the main thread */
2823 /* Gets the list of formats supported by the source. The members and idxset must
2824 * be freed by the caller. */
2825 pa_idxset* pa_source_get_formats(pa_source *s) {
2830 if (s->get_formats) {
2831 /* Source supports format query, all is good */
2832 ret = s->get_formats(s);
2834 /* Source doesn't support format query, so assume it does PCM */
2835 pa_format_info *f = pa_format_info_new();
2836 f->encoding = PA_ENCODING_PCM;
2838 ret = pa_idxset_new(NULL, NULL);
2839 pa_idxset_put(ret, f, NULL);
2845 /* Called from the main thread */
2846 /* Checks if the source can accept this format */
2847 bool pa_source_check_format(pa_source *s, pa_format_info *f) {
2848 pa_idxset *formats = NULL;
2854 formats = pa_source_get_formats(s);
2857 pa_format_info *finfo_device;
2860 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2861 if (pa_format_info_is_compatible(finfo_device, f)) {
2867 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
2873 /* Called from the main thread */
2874 /* Calculates the intersection between formats supported by the source and
2875 * in_formats, and returns these, in the order of the source's formats. */
2876 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2877 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2878 pa_format_info *f_source, *f_in;
2883 if (!in_formats || pa_idxset_isempty(in_formats))
2886 source_formats = pa_source_get_formats(s);
2888 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2889 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2890 if (pa_format_info_is_compatible(f_source, f_in))
2891 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2897 pa_idxset_free(source_formats, (pa_free_cb_t) pa_format_info_free);