2 This file is part of PulseAudio.
4 Copyright 2004-2006 Lennart Poettering
5 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
7 PulseAudio is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published
9 by the Free Software Foundation; either version 2.1 of the License,
10 or (at your option) any later version.
12 PulseAudio is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
28 #include <pulse/format.h>
29 #include <pulse/utf8.h>
30 #include <pulse/xmalloc.h>
31 #include <pulse/timeval.h>
32 #include <pulse/util.h>
33 #include <pulse/rtclock.h>
34 #include <pulse/internal.h>
36 #include <pulsecore/core-util.h>
37 #include <pulsecore/source-output.h>
38 #include <pulsecore/namereg.h>
39 #include <pulsecore/core-subscribe.h>
40 #include <pulsecore/log.h>
41 #include <pulsecore/mix.h>
42 #include <pulsecore/flist.h>
46 #define ABSOLUTE_MIN_LATENCY (500)
47 #define ABSOLUTE_MAX_LATENCY (10*PA_USEC_PER_SEC)
48 #define DEFAULT_FIXED_LATENCY (250*PA_USEC_PER_MSEC)
50 PA_DEFINE_PUBLIC_CLASS(pa_source, pa_msgobject);
52 struct pa_source_volume_change {
56 PA_LLIST_FIELDS(pa_source_volume_change);
59 struct source_message_set_port {
64 static void source_free(pa_object *o);
66 static void pa_source_volume_change_push(pa_source *s);
67 static void pa_source_volume_change_flush(pa_source *s);
69 pa_source_new_data* pa_source_new_data_init(pa_source_new_data *data) {
73 data->proplist = pa_proplist_new();
74 data->ports = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL, (pa_free_cb_t) pa_device_port_unref);
79 void pa_source_new_data_set_name(pa_source_new_data *data, const char *name) {
83 data->name = pa_xstrdup(name);
86 void pa_source_new_data_set_sample_spec(pa_source_new_data *data, const pa_sample_spec *spec) {
89 if ((data->sample_spec_is_set = !!spec))
90 data->sample_spec = *spec;
93 void pa_source_new_data_set_channel_map(pa_source_new_data *data, const pa_channel_map *map) {
96 if ((data->channel_map_is_set = !!map))
97 data->channel_map = *map;
100 void pa_source_new_data_set_alternate_sample_rate(pa_source_new_data *data, const uint32_t alternate_sample_rate) {
103 data->alternate_sample_rate_is_set = true;
104 data->alternate_sample_rate = alternate_sample_rate;
107 void pa_source_new_data_set_volume(pa_source_new_data *data, const pa_cvolume *volume) {
110 if ((data->volume_is_set = !!volume))
111 data->volume = *volume;
114 void pa_source_new_data_set_muted(pa_source_new_data *data, bool mute) {
117 data->muted_is_set = true;
121 void pa_source_new_data_set_port(pa_source_new_data *data, const char *port) {
124 pa_xfree(data->active_port);
125 data->active_port = pa_xstrdup(port);
128 void pa_source_new_data_done(pa_source_new_data *data) {
131 pa_proplist_free(data->proplist);
134 pa_hashmap_free(data->ports);
136 pa_xfree(data->name);
137 pa_xfree(data->active_port);
140 /* Called from main context */
141 static void reset_callbacks(pa_source *s) {
145 s->get_volume = NULL;
146 s->set_volume = NULL;
147 s->write_volume = NULL;
150 s->update_requested_latency = NULL;
152 s->get_formats = NULL;
153 s->update_rate = NULL;
156 /* Called from main context */
157 pa_source* pa_source_new(
159 pa_source_new_data *data,
160 pa_source_flags_t flags) {
164 char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
169 pa_assert(data->name);
170 pa_assert_ctl_context();
172 s = pa_msgobject_new(pa_source);
174 if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
175 pa_log_debug("Failed to register name %s.", data->name);
180 pa_source_new_data_set_name(data, name);
182 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
184 pa_namereg_unregister(core, name);
188 /* FIXME, need to free s here on failure */
190 pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
191 pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
193 pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
195 if (!data->channel_map_is_set)
196 pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
198 pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
199 pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
201 /* FIXME: There should probably be a general function for checking whether
202 * the source volume is allowed to be set, like there is for source outputs. */
203 pa_assert(!data->volume_is_set || !(flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
205 if (!data->volume_is_set) {
206 pa_cvolume_reset(&data->volume, data->sample_spec.channels);
207 data->save_volume = false;
210 pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
211 pa_return_null_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec));
213 if (!data->muted_is_set)
217 pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
219 pa_device_init_description(data->proplist, data->card);
220 pa_device_init_icon(data->proplist, false);
221 pa_device_init_intended_roles(data->proplist);
223 if (!data->active_port) {
224 pa_device_port *p = pa_device_port_find_best(data->ports);
226 pa_source_new_data_set_port(data, p->name);
229 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
231 pa_namereg_unregister(core, name);
235 s->parent.parent.free = source_free;
236 s->parent.process_msg = pa_source_process_msg;
239 s->state = PA_SOURCE_INIT;
242 s->suspend_cause = data->suspend_cause;
243 pa_source_set_mixer_dirty(s, false);
244 s->name = pa_xstrdup(name);
245 s->proplist = pa_proplist_copy(data->proplist);
246 s->driver = pa_xstrdup(pa_path_get_filename(data->driver));
247 s->module = data->module;
248 s->card = data->card;
250 s->priority = pa_device_init_priority(s->proplist);
252 s->sample_spec = data->sample_spec;
253 s->channel_map = data->channel_map;
254 s->default_sample_rate = s->sample_spec.rate;
256 if (data->alternate_sample_rate_is_set)
257 s->alternate_sample_rate = data->alternate_sample_rate;
259 s->alternate_sample_rate = s->core->alternate_sample_rate;
261 if (s->sample_spec.rate == s->alternate_sample_rate) {
262 pa_log_warn("Default and alternate sample rates are the same.");
263 s->alternate_sample_rate = 0;
266 s->outputs = pa_idxset_new(NULL, NULL);
268 s->monitor_of = NULL;
269 s->output_from_master = NULL;
271 s->reference_volume = s->real_volume = data->volume;
272 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
273 s->base_volume = PA_VOLUME_NORM;
274 s->n_volume_steps = PA_VOLUME_NORM+1;
275 s->muted = data->muted;
276 s->refresh_volume = s->refresh_muted = false;
283 /* As a minor optimization we just steal the list instead of
285 s->ports = data->ports;
288 s->active_port = NULL;
289 s->save_port = false;
291 if (data->active_port)
292 if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
293 s->save_port = data->save_port;
295 /* Hopefully the active port has already been assigned in the previous call
296 to pa_device_port_find_best, but better safe than sorry */
298 s->active_port = pa_device_port_find_best(s->ports);
301 s->port_latency_offset = s->active_port->latency_offset;
303 s->port_latency_offset = 0;
305 s->save_volume = data->save_volume;
306 s->save_muted = data->save_muted;
308 pa_silence_memchunk_get(
309 &core->silence_cache,
315 s->thread_info.rtpoll = NULL;
316 s->thread_info.outputs = pa_hashmap_new_full(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func, NULL,
317 (pa_free_cb_t) pa_source_output_unref);
318 s->thread_info.soft_volume = s->soft_volume;
319 s->thread_info.soft_muted = s->muted;
320 s->thread_info.state = s->state;
321 s->thread_info.max_rewind = 0;
322 s->thread_info.requested_latency_valid = false;
323 s->thread_info.requested_latency = 0;
324 s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
325 s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
326 s->thread_info.fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
328 PA_LLIST_HEAD_INIT(pa_source_volume_change, s->thread_info.volume_changes);
329 s->thread_info.volume_changes_tail = NULL;
330 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
331 s->thread_info.volume_change_safety_margin = core->deferred_volume_safety_margin_usec;
332 s->thread_info.volume_change_extra_delay = core->deferred_volume_extra_delay_usec;
333 s->thread_info.port_latency_offset = s->port_latency_offset;
335 /* FIXME: This should probably be moved to pa_source_put() */
336 pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
339 pa_assert_se(pa_idxset_put(s->card->sources, s, NULL) >= 0);
341 pt = pa_proplist_to_string_sep(s->proplist, "\n ");
342 pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s\n %s",
345 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
346 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
353 /* Called from main context */
354 static int source_set_state(pa_source *s, pa_source_state_t state) {
357 pa_source_state_t original_state;
360 pa_assert_ctl_context();
362 if (s->state == state)
365 original_state = s->state;
368 (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
369 (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
372 if ((ret = s->set_state(s, state)) < 0)
376 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
379 s->set_state(s, original_state);
386 if (state != PA_SOURCE_UNLINKED) { /* if we enter UNLINKED state pa_source_unlink() will fire the appropriate events */
387 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
388 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
391 if (suspend_change) {
395 /* We're suspending or resuming, tell everyone about it */
397 PA_IDXSET_FOREACH(o, s->outputs, idx)
398 if (s->state == PA_SOURCE_SUSPENDED &&
399 (o->flags & PA_SOURCE_OUTPUT_KILL_ON_SUSPEND))
400 pa_source_output_kill(o);
402 o->suspend(o, state == PA_SOURCE_SUSPENDED);
408 void pa_source_set_get_volume_callback(pa_source *s, pa_source_cb_t cb) {
414 void pa_source_set_set_volume_callback(pa_source *s, pa_source_cb_t cb) {
415 pa_source_flags_t flags;
418 pa_assert(!s->write_volume || cb);
422 /* Save the current flags so we can tell if they've changed */
426 /* The source implementor is responsible for setting decibel volume support */
427 s->flags |= PA_SOURCE_HW_VOLUME_CTRL;
429 s->flags &= ~PA_SOURCE_HW_VOLUME_CTRL;
430 /* See note below in pa_source_put() about volume sharing and decibel volumes */
431 pa_source_enable_decibel_volume(s, !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
434 /* If the flags have changed after init, let any clients know via a change event */
435 if (s->state != PA_SOURCE_INIT && flags != s->flags)
436 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
439 void pa_source_set_write_volume_callback(pa_source *s, pa_source_cb_t cb) {
440 pa_source_flags_t flags;
443 pa_assert(!cb || s->set_volume);
445 s->write_volume = cb;
447 /* Save the current flags so we can tell if they've changed */
451 s->flags |= PA_SOURCE_DEFERRED_VOLUME;
453 s->flags &= ~PA_SOURCE_DEFERRED_VOLUME;
455 /* If the flags have changed after init, let any clients know via a change event */
456 if (s->state != PA_SOURCE_INIT && flags != s->flags)
457 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
460 void pa_source_set_get_mute_callback(pa_source *s, pa_source_get_mute_cb_t cb) {
466 void pa_source_set_set_mute_callback(pa_source *s, pa_source_cb_t cb) {
467 pa_source_flags_t flags;
473 /* Save the current flags so we can tell if they've changed */
477 s->flags |= PA_SOURCE_HW_MUTE_CTRL;
479 s->flags &= ~PA_SOURCE_HW_MUTE_CTRL;
481 /* If the flags have changed after init, let any clients know via a change event */
482 if (s->state != PA_SOURCE_INIT && flags != s->flags)
483 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
486 static void enable_flat_volume(pa_source *s, bool enable) {
487 pa_source_flags_t flags;
491 /* Always follow the overall user preference here */
492 enable = enable && s->core->flat_volumes;
494 /* Save the current flags so we can tell if they've changed */
498 s->flags |= PA_SOURCE_FLAT_VOLUME;
500 s->flags &= ~PA_SOURCE_FLAT_VOLUME;
502 /* If the flags have changed after init, let any clients know via a change event */
503 if (s->state != PA_SOURCE_INIT && flags != s->flags)
504 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
507 void pa_source_enable_decibel_volume(pa_source *s, bool enable) {
508 pa_source_flags_t flags;
512 /* Save the current flags so we can tell if they've changed */
516 s->flags |= PA_SOURCE_DECIBEL_VOLUME;
517 enable_flat_volume(s, true);
519 s->flags &= ~PA_SOURCE_DECIBEL_VOLUME;
520 enable_flat_volume(s, false);
523 /* If the flags have changed after init, let any clients know via a change event */
524 if (s->state != PA_SOURCE_INIT && flags != s->flags)
525 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
528 /* Called from main context */
529 void pa_source_put(pa_source *s) {
530 pa_source_assert_ref(s);
531 pa_assert_ctl_context();
533 pa_assert(s->state == PA_SOURCE_INIT);
534 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || pa_source_is_filter(s));
536 /* The following fields must be initialized properly when calling _put() */
537 pa_assert(s->asyncmsgq);
538 pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
540 /* Generally, flags should be initialized via pa_source_new(). As a
541 * special exception we allow some volume related flags to be set
542 * between _new() and _put() by the callback setter functions above.
544 * Thus we implement a couple safeguards here which ensure the above
545 * setters were used (or at least the implementor made manual changes
546 * in a compatible way).
548 * Note: All of these flags set here can change over the life time
550 pa_assert(!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) || s->set_volume);
551 pa_assert(!(s->flags & PA_SOURCE_DEFERRED_VOLUME) || s->write_volume);
552 pa_assert(!(s->flags & PA_SOURCE_HW_MUTE_CTRL) || s->set_mute);
554 /* XXX: Currently decibel volume is disabled for all sources that use volume
555 * sharing. When the master source supports decibel volume, it would be good
556 * to have the flag also in the filter source, but currently we don't do that
557 * so that the flags of the filter source never change when it's moved from
558 * a master source to another. One solution for this problem would be to
559 * remove user-visible volume altogether from filter sources when volume
560 * sharing is used, but the current approach was easier to implement... */
561 /* We always support decibel volumes in software, otherwise we leave it to
562 * the source implementor to set this flag as needed.
564 * Note: This flag can also change over the life time of the source. */
565 if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
566 pa_source_enable_decibel_volume(s, true);
567 s->soft_volume = s->reference_volume;
570 /* If the source implementor support DB volumes by itself, we should always
571 * try and enable flat volumes too */
572 if ((s->flags & PA_SOURCE_DECIBEL_VOLUME))
573 enable_flat_volume(s, true);
575 if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
576 pa_source *root_source = pa_source_get_master(s);
578 pa_assert(PA_LIKELY(root_source));
580 s->reference_volume = root_source->reference_volume;
581 pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
583 s->real_volume = root_source->real_volume;
584 pa_cvolume_remap(&s->real_volume, &root_source->channel_map, &s->channel_map);
586 /* We assume that if the sink implementor changed the default
587 * volume he did so in real_volume, because that is the usual
588 * place where he is supposed to place his changes. */
589 s->reference_volume = s->real_volume;
591 s->thread_info.soft_volume = s->soft_volume;
592 s->thread_info.soft_muted = s->muted;
593 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
595 pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL)
596 || (s->base_volume == PA_VOLUME_NORM
597 && ((s->flags & PA_SOURCE_DECIBEL_VOLUME || (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)))));
598 pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
599 pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == !(s->thread_info.fixed_latency == 0));
601 if (s->suspend_cause)
602 pa_assert_se(source_set_state(s, PA_SOURCE_SUSPENDED) == 0);
604 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
606 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
607 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
610 /* Called from main context */
611 void pa_source_unlink(pa_source *s) {
613 pa_source_output *o, PA_UNUSED *j = NULL;
615 pa_source_assert_ref(s);
616 pa_assert_ctl_context();
618 /* See pa_sink_unlink() for a couple of comments how this function
621 if (s->unlink_requested)
624 s->unlink_requested = true;
626 linked = PA_SOURCE_IS_LINKED(s->state);
629 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
631 if (s->state != PA_SOURCE_UNLINKED)
632 pa_namereg_unregister(s->core, s->name);
633 pa_idxset_remove_by_data(s->core->sources, s, NULL);
636 pa_idxset_remove_by_data(s->card->sources, s, NULL);
638 while ((o = pa_idxset_first(s->outputs, NULL))) {
640 pa_source_output_kill(o);
645 source_set_state(s, PA_SOURCE_UNLINKED);
647 s->state = PA_SOURCE_UNLINKED;
652 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
653 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
657 /* Called from main context */
658 static void source_free(pa_object *o) {
659 pa_source *s = PA_SOURCE(o);
662 pa_assert_ctl_context();
663 pa_assert(pa_source_refcnt(s) == 0);
664 pa_assert(!PA_SOURCE_IS_LINKED(s->state));
666 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
668 pa_source_volume_change_flush(s);
670 pa_idxset_free(s->outputs, NULL);
671 pa_hashmap_free(s->thread_info.outputs);
673 if (s->silence.memblock)
674 pa_memblock_unref(s->silence.memblock);
680 pa_proplist_free(s->proplist);
683 pa_hashmap_free(s->ports);
688 /* Called from main context, and not while the IO thread is active, please */
689 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
690 pa_source_assert_ref(s);
691 pa_assert_ctl_context();
696 /* Called from main context, and not while the IO thread is active, please */
697 void pa_source_update_flags(pa_source *s, pa_source_flags_t mask, pa_source_flags_t value) {
698 pa_source_flags_t old_flags;
699 pa_source_output *output;
702 pa_source_assert_ref(s);
703 pa_assert_ctl_context();
705 /* For now, allow only a minimal set of flags to be changed. */
706 pa_assert((mask & ~(PA_SOURCE_DYNAMIC_LATENCY|PA_SOURCE_LATENCY)) == 0);
708 old_flags = s->flags;
709 s->flags = (s->flags & ~mask) | (value & mask);
711 if (s->flags == old_flags)
714 if ((s->flags & PA_SOURCE_LATENCY) != (old_flags & PA_SOURCE_LATENCY))
715 pa_log_debug("Source %s: LATENCY flag %s.", s->name, (s->flags & PA_SOURCE_LATENCY) ? "enabled" : "disabled");
717 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY) != (old_flags & PA_SOURCE_DYNAMIC_LATENCY))
718 pa_log_debug("Source %s: DYNAMIC_LATENCY flag %s.",
719 s->name, (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ? "enabled" : "disabled");
721 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
722 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_FLAGS_CHANGED], s);
724 PA_IDXSET_FOREACH(output, s->outputs, idx) {
725 if (output->destination_source)
726 pa_source_update_flags(output->destination_source, mask, value);
730 /* Called from IO context, or before _put() from main context */
731 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
732 pa_source_assert_ref(s);
733 pa_source_assert_io_context(s);
735 s->thread_info.rtpoll = p;
738 /* Called from main context */
739 int pa_source_update_status(pa_source*s) {
740 pa_source_assert_ref(s);
741 pa_assert_ctl_context();
742 pa_assert(PA_SOURCE_IS_LINKED(s->state));
744 if (s->state == PA_SOURCE_SUSPENDED)
747 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
750 /* Called from any context - must be threadsafe */
751 void pa_source_set_mixer_dirty(pa_source *s, bool is_dirty) {
752 pa_atomic_store(&s->mixer_dirty, is_dirty ? 1 : 0);
755 /* Called from main context */
756 int pa_source_suspend(pa_source *s, bool suspend, pa_suspend_cause_t cause) {
757 pa_source_assert_ref(s);
758 pa_assert_ctl_context();
759 pa_assert(PA_SOURCE_IS_LINKED(s->state));
760 pa_assert(cause != 0);
762 if (s->monitor_of && cause != PA_SUSPEND_PASSTHROUGH)
763 return -PA_ERR_NOTSUPPORTED;
766 s->suspend_cause |= cause;
768 s->suspend_cause &= ~cause;
770 if (!(s->suspend_cause & PA_SUSPEND_SESSION) && (pa_atomic_load(&s->mixer_dirty) != 0)) {
771 /* This might look racy but isn't: If somebody sets mixer_dirty exactly here,
772 it'll be handled just fine. */
773 pa_source_set_mixer_dirty(s, false);
774 pa_log_debug("Mixer is now accessible. Updating alsa mixer settings.");
775 if (s->active_port && s->set_port) {
776 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
777 struct source_message_set_port msg = { .port = s->active_port, .ret = 0 };
778 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
781 s->set_port(s, s->active_port);
791 if ((pa_source_get_state(s) == PA_SOURCE_SUSPENDED) == !!s->suspend_cause)
794 pa_log_debug("Suspend cause of source %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
796 if (s->suspend_cause)
797 return source_set_state(s, PA_SOURCE_SUSPENDED);
799 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
802 /* Called from main context */
803 int pa_source_sync_suspend(pa_source *s) {
804 pa_sink_state_t state;
806 pa_source_assert_ref(s);
807 pa_assert_ctl_context();
808 pa_assert(PA_SOURCE_IS_LINKED(s->state));
809 pa_assert(s->monitor_of);
811 state = pa_sink_get_state(s->monitor_of);
813 if (state == PA_SINK_SUSPENDED)
814 return source_set_state(s, PA_SOURCE_SUSPENDED);
816 pa_assert(PA_SINK_IS_OPENED(state));
818 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
821 /* Called from main context */
822 pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q) {
823 pa_source_output *o, *n;
826 pa_source_assert_ref(s);
827 pa_assert_ctl_context();
828 pa_assert(PA_SOURCE_IS_LINKED(s->state));
833 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = n) {
834 n = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx));
836 pa_source_output_ref(o);
838 if (pa_source_output_start_move(o) >= 0)
841 pa_source_output_unref(o);
847 /* Called from main context */
848 void pa_source_move_all_finish(pa_source *s, pa_queue *q, bool save) {
851 pa_source_assert_ref(s);
852 pa_assert_ctl_context();
853 pa_assert(PA_SOURCE_IS_LINKED(s->state));
856 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
857 if (pa_source_output_finish_move(o, s, save) < 0)
858 pa_source_output_fail_move(o);
860 pa_source_output_unref(o);
863 pa_queue_free(q, NULL);
866 /* Called from main context */
867 void pa_source_move_all_fail(pa_queue *q) {
870 pa_assert_ctl_context();
873 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
874 pa_source_output_fail_move(o);
875 pa_source_output_unref(o);
878 pa_queue_free(q, NULL);
881 /* Called from IO thread context */
882 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
886 pa_source_assert_ref(s);
887 pa_source_assert_io_context(s);
888 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
893 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
896 pa_log_debug("Processing rewind...");
898 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
899 pa_source_output_assert_ref(o);
900 pa_source_output_process_rewind(o, nbytes);
904 /* Called from IO thread context */
905 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
909 pa_source_assert_ref(s);
910 pa_source_assert_io_context(s);
911 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
914 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
917 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
918 pa_memchunk vchunk = *chunk;
920 pa_memblock_ref(vchunk.memblock);
921 pa_memchunk_make_writable(&vchunk, 0);
923 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
924 pa_silence_memchunk(&vchunk, &s->sample_spec);
926 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
928 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
929 pa_source_output_assert_ref(o);
931 if (!o->thread_info.direct_on_input)
932 pa_source_output_push(o, &vchunk);
935 pa_memblock_unref(vchunk.memblock);
938 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
939 pa_source_output_assert_ref(o);
941 if (!o->thread_info.direct_on_input)
942 pa_source_output_push(o, chunk);
947 /* Called from IO thread context */
948 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
949 pa_source_assert_ref(s);
950 pa_source_assert_io_context(s);
951 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
952 pa_source_output_assert_ref(o);
953 pa_assert(o->thread_info.direct_on_input);
956 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
959 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
960 pa_memchunk vchunk = *chunk;
962 pa_memblock_ref(vchunk.memblock);
963 pa_memchunk_make_writable(&vchunk, 0);
965 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
966 pa_silence_memchunk(&vchunk, &s->sample_spec);
968 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
970 pa_source_output_push(o, &vchunk);
972 pa_memblock_unref(vchunk.memblock);
974 pa_source_output_push(o, chunk);
977 /* Called from main thread */
978 int pa_source_update_rate(pa_source *s, uint32_t rate, bool passthrough) {
980 uint32_t desired_rate;
981 uint32_t default_rate = s->default_sample_rate;
982 uint32_t alternate_rate = s->alternate_sample_rate;
983 bool default_rate_is_usable = false;
984 bool alternate_rate_is_usable = false;
985 bool avoid_resampling = s->core->avoid_resampling;
987 if (rate == s->sample_spec.rate)
990 if (!s->update_rate && !s->monitor_of)
993 if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough && !avoid_resampling)) {
994 pa_log_debug("Default and alternate sample rates are the same, so there is no point in switching.");
998 if (PA_SOURCE_IS_RUNNING(s->state)) {
999 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u Hz",
1000 s->sample_spec.rate);
1004 if (s->monitor_of) {
1005 if (PA_SINK_IS_RUNNING(s->monitor_of->state)) {
1006 pa_log_info("Cannot update rate, this is a monitor source and the sink is running.");
1011 if (PA_UNLIKELY(!pa_sample_rate_valid(rate)))
1015 /* We have to try to use the source output rate */
1016 desired_rate = rate;
1018 } else if (avoid_resampling && (rate >= default_rate || rate >= alternate_rate)) {
1019 /* We just try to set the source output's sample rate if it's not too low */
1020 desired_rate = rate;
1022 } else if (default_rate == rate || alternate_rate == rate) {
1023 /* We can directly try to use this rate */
1024 desired_rate = rate;
1027 /* See if we can pick a rate that results in less resampling effort */
1028 if (default_rate % 11025 == 0 && rate % 11025 == 0)
1029 default_rate_is_usable = true;
1030 if (default_rate % 4000 == 0 && rate % 4000 == 0)
1031 default_rate_is_usable = true;
1032 if (alternate_rate && alternate_rate % 11025 == 0 && rate % 11025 == 0)
1033 alternate_rate_is_usable = true;
1034 if (alternate_rate && alternate_rate % 4000 == 0 && rate % 4000 == 0)
1035 alternate_rate_is_usable = true;
1037 if (alternate_rate_is_usable && !default_rate_is_usable)
1038 desired_rate = alternate_rate;
1040 desired_rate = default_rate;
1043 if (desired_rate == s->sample_spec.rate)
1046 if (!passthrough && pa_source_used_by(s) > 0)
1049 pa_log_debug("Suspending source %s due to changing the sample rate.", s->name);
1050 pa_source_suspend(s, true, PA_SUSPEND_INTERNAL);
1053 ret = s->update_rate(s, desired_rate);
1055 /* This is a monitor source. */
1057 /* XXX: This code is written with non-passthrough streams in mind. I
1058 * have no idea whether the behaviour with passthrough streams is
1061 uint32_t old_rate = s->sample_spec.rate;
1063 s->sample_spec.rate = desired_rate;
1064 ret = pa_sink_update_rate(s->monitor_of, desired_rate, false);
1067 /* Changing the sink rate failed, roll back the old rate for
1068 * the monitor source. Why did we set the source rate before
1069 * calling pa_sink_update_rate(), you may ask. The reason is
1070 * that pa_sink_update_rate() tries to update the monitor
1071 * source rate, but we are already in the process of updating
1072 * the monitor source rate, so there's a risk of entering an
1073 * infinite loop. Setting the source rate before calling
1074 * pa_sink_update_rate() makes the rate == s->sample_spec.rate
1075 * check in the beginning of this function return early, so we
1077 s->sample_spec.rate = old_rate;
1085 pa_source_output *o;
1087 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1088 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1089 pa_source_output_update_rate(o);
1092 pa_log_info("Changed sampling rate successfully");
1095 pa_source_suspend(s, false, PA_SUSPEND_INTERNAL);
1100 /* Called from main thread */
1101 pa_usec_t pa_source_get_latency(pa_source *s) {
1104 pa_source_assert_ref(s);
1105 pa_assert_ctl_context();
1106 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1108 if (s->state == PA_SOURCE_SUSPENDED)
1111 if (!(s->flags & PA_SOURCE_LATENCY))
1114 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1116 /* The return value is unsigned, so check that the offset can be added to usec without
1118 if (-s->port_latency_offset <= usec)
1119 usec += s->port_latency_offset;
1123 return (pa_usec_t)usec;
1126 /* Called from IO thread */
1127 int64_t pa_source_get_latency_within_thread(pa_source *s, bool allow_negative) {
1131 pa_source_assert_ref(s);
1132 pa_source_assert_io_context(s);
1133 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1135 /* The returned value is supposed to be in the time domain of the sound card! */
1137 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1140 if (!(s->flags & PA_SOURCE_LATENCY))
1143 o = PA_MSGOBJECT(s);
1145 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1147 o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL);
1149 /* If allow_negative is false, the call should only return positive values, */
1150 usec += s->thread_info.port_latency_offset;
1151 if (!allow_negative && usec < 0)
1157 /* Called from the main thread (and also from the IO thread while the main
1158 * thread is waiting).
1160 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1161 * set. Instead, flat volume mode is detected by checking whether the root source
1162 * has the flag set. */
1163 bool pa_source_flat_volume_enabled(pa_source *s) {
1164 pa_source_assert_ref(s);
1166 s = pa_source_get_master(s);
1169 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1174 /* Called from the main thread (and also from the IO thread while the main
1175 * thread is waiting). */
1176 pa_source *pa_source_get_master(pa_source *s) {
1177 pa_source_assert_ref(s);
1179 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1180 if (PA_UNLIKELY(!s->output_from_master))
1183 s = s->output_from_master->source;
1189 /* Called from main context */
1190 bool pa_source_is_filter(pa_source *s) {
1191 pa_source_assert_ref(s);
1193 return (s->output_from_master != NULL);
1196 /* Called from main context */
1197 bool pa_source_is_passthrough(pa_source *s) {
1199 pa_source_assert_ref(s);
1201 /* NB Currently only monitor sources support passthrough mode */
1202 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1205 /* Called from main context */
1206 void pa_source_enter_passthrough(pa_source *s) {
1209 /* set the volume to NORM */
1210 s->saved_volume = *pa_source_get_volume(s, true);
1211 s->saved_save_volume = s->save_volume;
1213 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1214 pa_source_set_volume(s, &volume, true, false);
1217 /* Called from main context */
1218 void pa_source_leave_passthrough(pa_source *s) {
1219 /* Restore source volume to what it was before we entered passthrough mode */
1220 pa_source_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
1222 pa_cvolume_init(&s->saved_volume);
1223 s->saved_save_volume = false;
1226 /* Called from main context. */
1227 static void compute_reference_ratio(pa_source_output *o) {
1229 pa_cvolume remapped;
1233 pa_assert(pa_source_flat_volume_enabled(o->source));
1236 * Calculates the reference ratio from the source's reference
1237 * volume. This basically calculates:
1239 * o->reference_ratio = o->volume / o->source->reference_volume
1242 remapped = o->source->reference_volume;
1243 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1245 ratio = o->reference_ratio;
1247 for (c = 0; c < o->sample_spec.channels; c++) {
1249 /* We don't update when the source volume is 0 anyway */
1250 if (remapped.values[c] <= PA_VOLUME_MUTED)
1253 /* Don't update the reference ratio unless necessary */
1254 if (pa_sw_volume_multiply(
1256 remapped.values[c]) == o->volume.values[c])
1259 ratio.values[c] = pa_sw_volume_divide(
1260 o->volume.values[c],
1261 remapped.values[c]);
1264 pa_source_output_set_reference_ratio(o, &ratio);
1267 /* Called from main context. Only called for the root source in volume sharing
1268 * cases, except for internal recursive calls. */
1269 static void compute_reference_ratios(pa_source *s) {
1271 pa_source_output *o;
1273 pa_source_assert_ref(s);
1274 pa_assert_ctl_context();
1275 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1276 pa_assert(pa_source_flat_volume_enabled(s));
1278 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1279 compute_reference_ratio(o);
1281 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1282 compute_reference_ratios(o->destination_source);
1286 /* Called from main context. Only called for the root source in volume sharing
1287 * cases, except for internal recursive calls. */
1288 static void compute_real_ratios(pa_source *s) {
1289 pa_source_output *o;
1292 pa_source_assert_ref(s);
1293 pa_assert_ctl_context();
1294 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1295 pa_assert(pa_source_flat_volume_enabled(s));
1297 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1299 pa_cvolume remapped;
1301 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1302 /* The origin source uses volume sharing, so this input's real ratio
1303 * is handled as a special case - the real ratio must be 0 dB, and
1304 * as a result i->soft_volume must equal i->volume_factor. */
1305 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1306 o->soft_volume = o->volume_factor;
1308 compute_real_ratios(o->destination_source);
1314 * This basically calculates:
1316 * i->real_ratio := i->volume / s->real_volume
1317 * i->soft_volume := i->real_ratio * i->volume_factor
1320 remapped = s->real_volume;
1321 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1323 o->real_ratio.channels = o->sample_spec.channels;
1324 o->soft_volume.channels = o->sample_spec.channels;
1326 for (c = 0; c < o->sample_spec.channels; c++) {
1328 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1329 /* We leave o->real_ratio untouched */
1330 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1334 /* Don't lose accuracy unless necessary */
1335 if (pa_sw_volume_multiply(
1336 o->real_ratio.values[c],
1337 remapped.values[c]) != o->volume.values[c])
1339 o->real_ratio.values[c] = pa_sw_volume_divide(
1340 o->volume.values[c],
1341 remapped.values[c]);
1343 o->soft_volume.values[c] = pa_sw_volume_multiply(
1344 o->real_ratio.values[c],
1345 o->volume_factor.values[c]);
1348 /* We don't copy the soft_volume to the thread_info data
1349 * here. That must be done by the caller */
1353 static pa_cvolume *cvolume_remap_minimal_impact(
1355 const pa_cvolume *template,
1356 const pa_channel_map *from,
1357 const pa_channel_map *to) {
1362 pa_assert(template);
1365 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1366 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1368 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1369 * mapping from source output to source volumes:
1371 * If template is a possible remapping from v it is used instead
1372 * of remapping anew.
1374 * If the channel maps don't match we set an all-channel volume on
1375 * the source to ensure that changing a volume on one stream has no
1376 * effect that cannot be compensated for in another stream that
1377 * does not have the same channel map as the source. */
1379 if (pa_channel_map_equal(from, to))
1383 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1388 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1392 /* Called from main thread. Only called for the root source in volume sharing
1393 * cases, except for internal recursive calls. */
1394 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1395 pa_source_output *o;
1398 pa_source_assert_ref(s);
1399 pa_assert(max_volume);
1400 pa_assert(channel_map);
1401 pa_assert(pa_source_flat_volume_enabled(s));
1403 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1404 pa_cvolume remapped;
1406 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1407 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1409 /* Ignore this output. The origin source uses volume sharing, so this
1410 * output's volume will be set to be equal to the root source's real
1411 * volume. Obviously this output's current volume must not then
1412 * affect what the root source's real volume will be. */
1416 remapped = o->volume;
1417 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1418 pa_cvolume_merge(max_volume, max_volume, &remapped);
1422 /* Called from main thread. Only called for the root source in volume sharing
1423 * cases, except for internal recursive calls. */
1424 static bool has_outputs(pa_source *s) {
1425 pa_source_output *o;
1428 pa_source_assert_ref(s);
1430 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1431 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1438 /* Called from main thread. Only called for the root source in volume sharing
1439 * cases, except for internal recursive calls. */
1440 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1441 pa_source_output *o;
1444 pa_source_assert_ref(s);
1445 pa_assert(new_volume);
1446 pa_assert(channel_map);
1448 s->real_volume = *new_volume;
1449 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1451 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1452 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1453 if (pa_source_flat_volume_enabled(s)) {
1454 pa_cvolume new_output_volume;
1456 /* Follow the root source's real volume. */
1457 new_output_volume = *new_volume;
1458 pa_cvolume_remap(&new_output_volume, channel_map, &o->channel_map);
1459 pa_source_output_set_volume_direct(o, &new_output_volume);
1460 compute_reference_ratio(o);
1463 update_real_volume(o->destination_source, new_volume, channel_map);
1468 /* Called from main thread. Only called for the root source in shared volume
1470 static void compute_real_volume(pa_source *s) {
1471 pa_source_assert_ref(s);
1472 pa_assert_ctl_context();
1473 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1474 pa_assert(pa_source_flat_volume_enabled(s));
1475 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1477 /* This determines the maximum volume of all streams and sets
1478 * s->real_volume accordingly. */
1480 if (!has_outputs(s)) {
1481 /* In the special case that we have no source outputs we leave the
1482 * volume unmodified. */
1483 update_real_volume(s, &s->reference_volume, &s->channel_map);
1487 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1489 /* First let's determine the new maximum volume of all outputs
1490 * connected to this source */
1491 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1492 update_real_volume(s, &s->real_volume, &s->channel_map);
1494 /* Then, let's update the real ratios/soft volumes of all outputs
1495 * connected to this source */
1496 compute_real_ratios(s);
1499 /* Called from main thread. Only called for the root source in shared volume
1500 * cases, except for internal recursive calls. */
1501 static void propagate_reference_volume(pa_source *s) {
1502 pa_source_output *o;
1505 pa_source_assert_ref(s);
1506 pa_assert_ctl_context();
1507 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1508 pa_assert(pa_source_flat_volume_enabled(s));
1510 /* This is called whenever the source volume changes that is not
1511 * caused by a source output volume change. We need to fix up the
1512 * source output volumes accordingly */
1514 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1515 pa_cvolume new_volume;
1517 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1518 propagate_reference_volume(o->destination_source);
1520 /* Since the origin source uses volume sharing, this output's volume
1521 * needs to be updated to match the root source's real volume, but
1522 * that will be done later in update_shared_real_volume(). */
1526 /* This basically calculates:
1528 * o->volume := o->reference_volume * o->reference_ratio */
1530 new_volume = s->reference_volume;
1531 pa_cvolume_remap(&new_volume, &s->channel_map, &o->channel_map);
1532 pa_sw_cvolume_multiply(&new_volume, &new_volume, &o->reference_ratio);
1533 pa_source_output_set_volume_direct(o, &new_volume);
1537 /* Called from main thread. Only called for the root source in volume sharing
1538 * cases, except for internal recursive calls. The return value indicates
1539 * whether any reference volume actually changed. */
1540 static bool update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
1542 bool reference_volume_changed;
1543 pa_source_output *o;
1546 pa_source_assert_ref(s);
1547 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1549 pa_assert(channel_map);
1550 pa_assert(pa_cvolume_valid(v));
1553 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1555 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1556 pa_source_set_reference_volume_direct(s, &volume);
1558 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1560 if (!reference_volume_changed && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1561 /* If the root source's volume doesn't change, then there can't be any
1562 * changes in the other source in the source tree either.
1564 * It's probably theoretically possible that even if the root source's
1565 * volume changes slightly, some filter source doesn't change its volume
1566 * due to rounding errors. If that happens, we still want to propagate
1567 * the changed root source volume to the sources connected to the
1568 * intermediate source that didn't change its volume. This theoretical
1569 * possibility is the reason why we have that !(s->flags &
1570 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1571 * notice even if we returned here false always if
1572 * reference_volume_changed is false. */
1575 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1576 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1577 update_reference_volume(o->destination_source, v, channel_map, false);
1583 /* Called from main thread */
1584 void pa_source_set_volume(
1586 const pa_cvolume *volume,
1590 pa_cvolume new_reference_volume, root_real_volume;
1591 pa_source *root_source;
1593 pa_source_assert_ref(s);
1594 pa_assert_ctl_context();
1595 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1596 pa_assert(!volume || pa_cvolume_valid(volume));
1597 pa_assert(volume || pa_source_flat_volume_enabled(s));
1598 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1600 /* make sure we don't change the volume in PASSTHROUGH mode ...
1601 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1602 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1603 pa_log_warn("Cannot change volume, source is monitor of a PASSTHROUGH sink");
1607 /* In case of volume sharing, the volume is set for the root source first,
1608 * from which it's then propagated to the sharing sources. */
1609 root_source = pa_source_get_master(s);
1611 if (PA_UNLIKELY(!root_source))
1614 /* As a special exception we accept mono volumes on all sources --
1615 * even on those with more complex channel maps */
1618 if (pa_cvolume_compatible(volume, &s->sample_spec))
1619 new_reference_volume = *volume;
1621 new_reference_volume = s->reference_volume;
1622 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1625 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1627 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1628 if (pa_source_flat_volume_enabled(root_source)) {
1629 /* OK, propagate this volume change back to the outputs */
1630 propagate_reference_volume(root_source);
1632 /* And now recalculate the real volume */
1633 compute_real_volume(root_source);
1635 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1639 /* If volume is NULL we synchronize the source's real and
1640 * reference volumes with the stream volumes. */
1642 pa_assert(pa_source_flat_volume_enabled(root_source));
1644 /* Ok, let's determine the new real volume */
1645 compute_real_volume(root_source);
1647 /* To propagate the reference volume from the filter to the root source,
1648 * we first take the real volume from the root source and remap it to
1649 * match the filter. Then, we merge in the reference volume from the
1650 * filter on top of this, and remap it back to the root source channel
1652 root_real_volume = root_source->real_volume;
1653 /* First we remap root's real volume to filter channel count and map if needed */
1654 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1655 pa_cvolume_remap(&root_real_volume, &root_source->channel_map, &s->channel_map);
1656 /* Then let's 'push' the reference volume if necessary */
1657 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_real_volume);
1658 /* If the source and its root don't have the same number of channels, we need to remap back */
1659 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1660 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1662 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1664 /* Now that the reference volume is updated, we can update the streams'
1665 * reference ratios. */
1666 compute_reference_ratios(root_source);
1669 if (root_source->set_volume) {
1670 /* If we have a function set_volume(), then we do not apply a
1671 * soft volume by default. However, set_volume() is free to
1672 * apply one to root_source->soft_volume */
1674 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1675 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1676 root_source->set_volume(root_source);
1679 /* If we have no function set_volume(), then the soft volume
1680 * becomes the real volume */
1681 root_source->soft_volume = root_source->real_volume;
1683 /* This tells the source that soft volume and/or real volume changed */
1685 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1688 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1689 * Only to be called by source implementor */
1690 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1692 pa_source_assert_ref(s);
1693 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1695 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1696 pa_source_assert_io_context(s);
1698 pa_assert_ctl_context();
1701 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1703 s->soft_volume = *volume;
1705 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1706 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1708 s->thread_info.soft_volume = s->soft_volume;
1711 /* Called from the main thread. Only called for the root source in volume sharing
1712 * cases, except for internal recursive calls. */
1713 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1714 pa_source_output *o;
1717 pa_source_assert_ref(s);
1718 pa_assert(old_real_volume);
1719 pa_assert_ctl_context();
1720 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1722 /* This is called when the hardware's real volume changes due to
1723 * some external event. We copy the real volume into our
1724 * reference volume and then rebuild the stream volumes based on
1725 * i->real_ratio which should stay fixed. */
1727 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1728 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1731 /* 1. Make the real volume the reference volume */
1732 update_reference_volume(s, &s->real_volume, &s->channel_map, true);
1735 if (pa_source_flat_volume_enabled(s)) {
1736 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1737 pa_cvolume new_volume;
1739 /* 2. Since the source's reference and real volumes are equal
1740 * now our ratios should be too. */
1741 pa_source_output_set_reference_ratio(o, &o->real_ratio);
1743 /* 3. Recalculate the new stream reference volume based on the
1744 * reference ratio and the sink's reference volume.
1746 * This basically calculates:
1748 * o->volume = s->reference_volume * o->reference_ratio
1750 * This is identical to propagate_reference_volume() */
1751 new_volume = s->reference_volume;
1752 pa_cvolume_remap(&new_volume, &s->channel_map, &o->channel_map);
1753 pa_sw_cvolume_multiply(&new_volume, &new_volume, &o->reference_ratio);
1754 pa_source_output_set_volume_direct(o, &new_volume);
1756 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1757 propagate_real_volume(o->destination_source, old_real_volume);
1761 /* Something got changed in the hardware. It probably makes sense
1762 * to save changed hw settings given that hw volume changes not
1763 * triggered by PA are almost certainly done by the user. */
1764 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1765 s->save_volume = true;
1768 /* Called from io thread */
1769 void pa_source_update_volume_and_mute(pa_source *s) {
1771 pa_source_assert_io_context(s);
1773 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1776 /* Called from main thread */
1777 const pa_cvolume *pa_source_get_volume(pa_source *s, bool force_refresh) {
1778 pa_source_assert_ref(s);
1779 pa_assert_ctl_context();
1780 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1782 if (s->refresh_volume || force_refresh) {
1783 struct pa_cvolume old_real_volume;
1785 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1787 old_real_volume = s->real_volume;
1789 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1792 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1794 update_real_volume(s, &s->real_volume, &s->channel_map);
1795 propagate_real_volume(s, &old_real_volume);
1798 return &s->reference_volume;
1801 /* Called from main thread. In volume sharing cases, only the root source may
1803 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1804 pa_cvolume old_real_volume;
1806 pa_source_assert_ref(s);
1807 pa_assert_ctl_context();
1808 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1809 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1811 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1813 old_real_volume = s->real_volume;
1814 update_real_volume(s, new_real_volume, &s->channel_map);
1815 propagate_real_volume(s, &old_real_volume);
1818 /* Called from main thread */
1819 void pa_source_set_mute(pa_source *s, bool mute, bool save) {
1822 pa_source_assert_ref(s);
1823 pa_assert_ctl_context();
1825 old_muted = s->muted;
1827 if (mute == old_muted) {
1828 s->save_muted |= save;
1833 s->save_muted = save;
1835 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute) {
1836 s->set_mute_in_progress = true;
1838 s->set_mute_in_progress = false;
1841 if (!PA_SOURCE_IS_LINKED(s->state))
1844 pa_log_debug("The mute of source %s changed from %s to %s.", s->name, pa_yes_no(old_muted), pa_yes_no(mute));
1845 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1846 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1847 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_MUTE_CHANGED], s);
1850 /* Called from main thread */
1851 bool pa_source_get_mute(pa_source *s, bool force_refresh) {
1853 pa_source_assert_ref(s);
1854 pa_assert_ctl_context();
1855 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1857 if ((s->refresh_muted || force_refresh) && s->get_mute) {
1860 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
1861 if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &mute, 0, NULL) >= 0)
1862 pa_source_mute_changed(s, mute);
1864 if (s->get_mute(s, &mute) >= 0)
1865 pa_source_mute_changed(s, mute);
1872 /* Called from main thread */
1873 void pa_source_mute_changed(pa_source *s, bool new_muted) {
1874 pa_source_assert_ref(s);
1875 pa_assert_ctl_context();
1876 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1878 if (s->set_mute_in_progress)
1881 /* pa_source_set_mute() does this same check, so this may appear redundant,
1882 * but we must have this here also, because the save parameter of
1883 * pa_source_set_mute() would otherwise have unintended side effects
1884 * (saving the mute state when it shouldn't be saved). */
1885 if (new_muted == s->muted)
1888 pa_source_set_mute(s, new_muted, true);
1891 /* Called from main thread */
1892 bool pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1893 pa_source_assert_ref(s);
1894 pa_assert_ctl_context();
1897 pa_proplist_update(s->proplist, mode, p);
1899 if (PA_SOURCE_IS_LINKED(s->state)) {
1900 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1901 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1907 /* Called from main thread */
1908 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1909 void pa_source_set_description(pa_source *s, const char *description) {
1911 pa_source_assert_ref(s);
1912 pa_assert_ctl_context();
1914 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1917 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1919 if (old && description && pa_streq(old, description))
1923 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1925 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1927 if (PA_SOURCE_IS_LINKED(s->state)) {
1928 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1929 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1933 /* Called from main thread */
1934 unsigned pa_source_linked_by(pa_source *s) {
1935 pa_source_assert_ref(s);
1936 pa_assert_ctl_context();
1937 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1939 return pa_idxset_size(s->outputs);
1942 /* Called from main thread */
1943 unsigned pa_source_used_by(pa_source *s) {
1946 pa_source_assert_ref(s);
1947 pa_assert_ctl_context();
1948 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1950 ret = pa_idxset_size(s->outputs);
1951 pa_assert(ret >= s->n_corked);
1953 return ret - s->n_corked;
1956 /* Called from main thread */
1957 unsigned pa_source_check_suspend(pa_source *s, pa_source_output *ignore) {
1959 pa_source_output *o;
1962 pa_source_assert_ref(s);
1963 pa_assert_ctl_context();
1965 if (!PA_SOURCE_IS_LINKED(s->state))
1970 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1971 pa_source_output_state_t st;
1976 st = pa_source_output_get_state(o);
1978 /* We do not assert here. It is perfectly valid for a source output to
1979 * be in the INIT state (i.e. created, marked done but not yet put)
1980 * and we should not care if it's unlinked as it won't contribute
1981 * towards our busy status.
1983 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1986 if (st == PA_SOURCE_OUTPUT_CORKED)
1989 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
1998 /* Called from the IO thread */
1999 static void sync_output_volumes_within_thread(pa_source *s) {
2000 pa_source_output *o;
2003 pa_source_assert_ref(s);
2004 pa_source_assert_io_context(s);
2006 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
2007 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
2010 o->thread_info.soft_volume = o->soft_volume;
2011 //pa_source_output_request_rewind(o, 0, true, false, false);
2015 /* Called from the IO thread. Only called for the root source in volume sharing
2016 * cases, except for internal recursive calls. */
2017 static void set_shared_volume_within_thread(pa_source *s) {
2018 pa_source_output *o;
2021 pa_source_assert_ref(s);
2023 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
2025 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
2026 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
2027 set_shared_volume_within_thread(o->destination_source);
2031 /* Called from IO thread, except when it is not */
2032 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
2033 pa_source *s = PA_SOURCE(object);
2034 pa_source_assert_ref(s);
2036 switch ((pa_source_message_t) code) {
2038 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
2039 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2041 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
2043 if (o->direct_on_input) {
2044 o->thread_info.direct_on_input = o->direct_on_input;
2045 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
2048 pa_source_output_attach(o);
2050 pa_source_output_set_state_within_thread(o, o->state);
2052 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
2053 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2055 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2057 /* We don't just invalidate the requested latency here,
2058 * because if we are in a move we might need to fix up the
2059 * requested latency. */
2060 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2062 /* In flat volume mode we need to update the volume as
2064 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2067 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
2068 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2070 pa_source_output_set_state_within_thread(o, o->state);
2072 pa_source_output_detach(o);
2074 if (o->thread_info.direct_on_input) {
2075 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
2076 o->thread_info.direct_on_input = NULL;
2079 pa_hashmap_remove_and_free(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index));
2080 pa_source_invalidate_requested_latency(s, true);
2082 /* In flat volume mode we need to update the volume as
2084 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2087 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
2088 pa_source *root_source = pa_source_get_master(s);
2090 if (PA_LIKELY(root_source))
2091 set_shared_volume_within_thread(root_source);
2096 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
2098 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2100 pa_source_volume_change_push(s);
2102 /* Fall through ... */
2104 case PA_SOURCE_MESSAGE_SET_VOLUME:
2106 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2107 s->thread_info.soft_volume = s->soft_volume;
2110 /* Fall through ... */
2112 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
2113 sync_output_volumes_within_thread(s);
2116 case PA_SOURCE_MESSAGE_GET_VOLUME:
2118 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
2120 pa_source_volume_change_flush(s);
2121 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2124 /* In case source implementor reset SW volume. */
2125 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2126 s->thread_info.soft_volume = s->soft_volume;
2131 case PA_SOURCE_MESSAGE_SET_MUTE:
2133 if (s->thread_info.soft_muted != s->muted) {
2134 s->thread_info.soft_muted = s->muted;
2137 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2142 case PA_SOURCE_MESSAGE_GET_MUTE:
2144 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2145 return s->get_mute(s, userdata);
2149 case PA_SOURCE_MESSAGE_SET_STATE: {
2151 bool suspend_change =
2152 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2153 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
2155 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2157 if (suspend_change) {
2158 pa_source_output *o;
2161 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2162 if (o->suspend_within_thread)
2163 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2169 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2171 pa_usec_t *usec = userdata;
2172 *usec = pa_source_get_requested_latency_within_thread(s);
2174 /* Yes, that's right, the IO thread will see -1 when no
2175 * explicit requested latency is configured, the main
2176 * thread will see max_latency */
2177 if (*usec == (pa_usec_t) -1)
2178 *usec = s->thread_info.max_latency;
2183 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2184 pa_usec_t *r = userdata;
2186 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2191 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2192 pa_usec_t *r = userdata;
2194 r[0] = s->thread_info.min_latency;
2195 r[1] = s->thread_info.max_latency;
2200 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2202 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2205 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2207 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2210 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2212 *((size_t*) userdata) = s->thread_info.max_rewind;
2215 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2217 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2220 case PA_SOURCE_MESSAGE_GET_LATENCY:
2222 if (s->monitor_of) {
2223 *((int64_t*) userdata) = -pa_sink_get_latency_within_thread(s->monitor_of, true);
2227 /* Implementors need to overwrite this implementation! */
2230 case PA_SOURCE_MESSAGE_SET_PORT:
2232 pa_assert(userdata);
2234 struct source_message_set_port *msg_data = userdata;
2235 msg_data->ret = s->set_port(s, msg_data->port);
2239 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2240 /* This message is sent from IO-thread and handled in main thread. */
2241 pa_assert_ctl_context();
2243 /* Make sure we're not messing with main thread when no longer linked */
2244 if (!PA_SOURCE_IS_LINKED(s->state))
2247 pa_source_get_volume(s, true);
2248 pa_source_get_mute(s, true);
2251 case PA_SOURCE_MESSAGE_SET_PORT_LATENCY_OFFSET:
2252 s->thread_info.port_latency_offset = offset;
2255 case PA_SOURCE_MESSAGE_MAX:
2262 /* Called from main thread */
2263 int pa_source_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
2268 pa_core_assert_ref(c);
2269 pa_assert_ctl_context();
2270 pa_assert(cause != 0);
2272 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2275 if (source->monitor_of)
2278 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2285 /* Called from IO thread */
2286 void pa_source_detach_within_thread(pa_source *s) {
2287 pa_source_output *o;
2290 pa_source_assert_ref(s);
2291 pa_source_assert_io_context(s);
2292 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2294 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2295 pa_source_output_detach(o);
2298 /* Called from IO thread */
2299 void pa_source_attach_within_thread(pa_source *s) {
2300 pa_source_output *o;
2303 pa_source_assert_ref(s);
2304 pa_source_assert_io_context(s);
2305 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2307 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2308 pa_source_output_attach(o);
2311 /* Called from IO thread */
2312 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2313 pa_usec_t result = (pa_usec_t) -1;
2314 pa_source_output *o;
2317 pa_source_assert_ref(s);
2318 pa_source_assert_io_context(s);
2320 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2321 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2323 if (s->thread_info.requested_latency_valid)
2324 return s->thread_info.requested_latency;
2326 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2327 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2328 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2329 result = o->thread_info.requested_source_latency;
2331 if (result != (pa_usec_t) -1)
2332 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2334 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2335 /* Only cache this if we are fully set up */
2336 s->thread_info.requested_latency = result;
2337 s->thread_info.requested_latency_valid = true;
2343 /* Called from main thread */
2344 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2347 pa_source_assert_ref(s);
2348 pa_assert_ctl_context();
2349 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2351 if (s->state == PA_SOURCE_SUSPENDED)
2354 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2359 /* Called from IO thread */
2360 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2361 pa_source_output *o;
2364 pa_source_assert_ref(s);
2365 pa_source_assert_io_context(s);
2367 if (max_rewind == s->thread_info.max_rewind)
2370 s->thread_info.max_rewind = max_rewind;
2372 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2373 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2374 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2377 /* Called from main thread */
2378 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2379 pa_source_assert_ref(s);
2380 pa_assert_ctl_context();
2382 if (PA_SOURCE_IS_LINKED(s->state))
2383 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2385 pa_source_set_max_rewind_within_thread(s, max_rewind);
2388 /* Called from IO thread */
2389 void pa_source_invalidate_requested_latency(pa_source *s, bool dynamic) {
2390 pa_source_output *o;
2393 pa_source_assert_ref(s);
2394 pa_source_assert_io_context(s);
2396 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2397 s->thread_info.requested_latency_valid = false;
2401 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2403 if (s->update_requested_latency)
2404 s->update_requested_latency(s);
2406 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2407 if (o->update_source_requested_latency)
2408 o->update_source_requested_latency(o);
2412 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2415 /* Called from main thread */
2416 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2417 pa_source_assert_ref(s);
2418 pa_assert_ctl_context();
2420 /* min_latency == 0: no limit
2421 * min_latency anything else: specified limit
2423 * Similar for max_latency */
2425 if (min_latency < ABSOLUTE_MIN_LATENCY)
2426 min_latency = ABSOLUTE_MIN_LATENCY;
2428 if (max_latency <= 0 ||
2429 max_latency > ABSOLUTE_MAX_LATENCY)
2430 max_latency = ABSOLUTE_MAX_LATENCY;
2432 pa_assert(min_latency <= max_latency);
2434 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2435 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2436 max_latency == ABSOLUTE_MAX_LATENCY) ||
2437 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2439 if (PA_SOURCE_IS_LINKED(s->state)) {
2445 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2447 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2450 /* Called from main thread */
2451 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2452 pa_source_assert_ref(s);
2453 pa_assert_ctl_context();
2454 pa_assert(min_latency);
2455 pa_assert(max_latency);
2457 if (PA_SOURCE_IS_LINKED(s->state)) {
2458 pa_usec_t r[2] = { 0, 0 };
2460 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2462 *min_latency = r[0];
2463 *max_latency = r[1];
2465 *min_latency = s->thread_info.min_latency;
2466 *max_latency = s->thread_info.max_latency;
2470 /* Called from IO thread, and from main thread before pa_source_put() is called */
2471 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2472 pa_source_assert_ref(s);
2473 pa_source_assert_io_context(s);
2475 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2476 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2477 pa_assert(min_latency <= max_latency);
2479 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2480 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2481 max_latency == ABSOLUTE_MAX_LATENCY) ||
2482 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2485 if (s->thread_info.min_latency == min_latency &&
2486 s->thread_info.max_latency == max_latency)
2489 s->thread_info.min_latency = min_latency;
2490 s->thread_info.max_latency = max_latency;
2492 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2493 pa_source_output *o;
2496 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2497 if (o->update_source_latency_range)
2498 o->update_source_latency_range(o);
2501 pa_source_invalidate_requested_latency(s, false);
2504 /* Called from main thread, before the source is put */
2505 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2506 pa_source_assert_ref(s);
2507 pa_assert_ctl_context();
2509 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2510 pa_assert(latency == 0);
2514 if (latency < ABSOLUTE_MIN_LATENCY)
2515 latency = ABSOLUTE_MIN_LATENCY;
2517 if (latency > ABSOLUTE_MAX_LATENCY)
2518 latency = ABSOLUTE_MAX_LATENCY;
2520 if (PA_SOURCE_IS_LINKED(s->state))
2521 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2523 s->thread_info.fixed_latency = latency;
2526 /* Called from main thread */
2527 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2530 pa_source_assert_ref(s);
2531 pa_assert_ctl_context();
2533 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2536 if (PA_SOURCE_IS_LINKED(s->state))
2537 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2539 latency = s->thread_info.fixed_latency;
2544 /* Called from IO thread */
2545 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2546 pa_source_assert_ref(s);
2547 pa_source_assert_io_context(s);
2549 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2550 pa_assert(latency == 0);
2551 s->thread_info.fixed_latency = 0;
2556 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2557 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2559 if (s->thread_info.fixed_latency == latency)
2562 s->thread_info.fixed_latency = latency;
2564 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2565 pa_source_output *o;
2568 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2569 if (o->update_source_fixed_latency)
2570 o->update_source_fixed_latency(o);
2573 pa_source_invalidate_requested_latency(s, false);
2576 /* Called from main thread */
2577 void pa_source_set_port_latency_offset(pa_source *s, int64_t offset) {
2578 pa_source_assert_ref(s);
2580 s->port_latency_offset = offset;
2582 if (PA_SOURCE_IS_LINKED(s->state))
2583 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT_LATENCY_OFFSET, NULL, offset, NULL) == 0);
2585 s->thread_info.port_latency_offset = offset;
2587 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_LATENCY_OFFSET_CHANGED], s);
2590 /* Called from main thread */
2591 size_t pa_source_get_max_rewind(pa_source *s) {
2593 pa_assert_ctl_context();
2594 pa_source_assert_ref(s);
2596 if (!PA_SOURCE_IS_LINKED(s->state))
2597 return s->thread_info.max_rewind;
2599 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2604 /* Called from main context */
2605 int pa_source_set_port(pa_source *s, const char *name, bool save) {
2606 pa_device_port *port;
2609 pa_source_assert_ref(s);
2610 pa_assert_ctl_context();
2613 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2614 return -PA_ERR_NOTIMPLEMENTED;
2618 return -PA_ERR_NOENTITY;
2620 if (!(port = pa_hashmap_get(s->ports, name)))
2621 return -PA_ERR_NOENTITY;
2623 if (s->active_port == port) {
2624 s->save_port = s->save_port || save;
2628 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2629 struct source_message_set_port msg = { .port = port, .ret = 0 };
2630 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2634 ret = s->set_port(s, port);
2637 return -PA_ERR_NOENTITY;
2639 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2641 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2643 s->active_port = port;
2644 s->save_port = save;
2646 pa_source_set_port_latency_offset(s, s->active_port->latency_offset);
2648 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2653 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2655 /* Called from the IO thread. */
2656 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2657 pa_source_volume_change *c;
2658 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2659 c = pa_xnew(pa_source_volume_change, 1);
2661 PA_LLIST_INIT(pa_source_volume_change, c);
2663 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2667 /* Called from the IO thread. */
2668 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2670 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2674 /* Called from the IO thread. */
2675 void pa_source_volume_change_push(pa_source *s) {
2676 pa_source_volume_change *c = NULL;
2677 pa_source_volume_change *nc = NULL;
2678 pa_source_volume_change *pc = NULL;
2679 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2681 const char *direction = NULL;
2684 nc = pa_source_volume_change_new(s);
2686 /* NOTE: There is already more different volumes in pa_source that I can remember.
2687 * Adding one more volume for HW would get us rid of this, but I am trying
2688 * to survive with the ones we already have. */
2689 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2691 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2692 pa_log_debug("Volume not changing");
2693 pa_source_volume_change_free(nc);
2697 nc->at = pa_source_get_latency_within_thread(s, false);
2698 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2700 if (s->thread_info.volume_changes_tail) {
2701 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2702 /* If volume is going up let's do it a bit late. If it is going
2703 * down let's do it a bit early. */
2704 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2705 if (nc->at + safety_margin > c->at) {
2706 nc->at += safety_margin;
2711 else if (nc->at - safety_margin > c->at) {
2712 nc->at -= safety_margin;
2720 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2721 nc->at += safety_margin;
2724 nc->at -= safety_margin;
2727 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2730 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2733 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2735 /* We can ignore volume events that came earlier but should happen later than this. */
2736 PA_LLIST_FOREACH_SAFE(c, pc, nc->next) {
2737 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2738 pa_source_volume_change_free(c);
2741 s->thread_info.volume_changes_tail = nc;
2744 /* Called from the IO thread. */
2745 static void pa_source_volume_change_flush(pa_source *s) {
2746 pa_source_volume_change *c = s->thread_info.volume_changes;
2748 s->thread_info.volume_changes = NULL;
2749 s->thread_info.volume_changes_tail = NULL;
2751 pa_source_volume_change *next = c->next;
2752 pa_source_volume_change_free(c);
2757 /* Called from the IO thread. */
2758 bool pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2764 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2770 pa_assert(s->write_volume);
2772 now = pa_rtclock_now();
2774 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2775 pa_source_volume_change *c = s->thread_info.volume_changes;
2776 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2777 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2778 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2780 s->thread_info.current_hw_volume = c->hw_volume;
2781 pa_source_volume_change_free(c);
2787 if (s->thread_info.volume_changes) {
2789 *usec_to_next = s->thread_info.volume_changes->at - now;
2790 if (pa_log_ratelimit(PA_LOG_DEBUG))
2791 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2796 s->thread_info.volume_changes_tail = NULL;
2801 /* Called from the main thread */
2802 /* Gets the list of formats supported by the source. The members and idxset must
2803 * be freed by the caller. */
2804 pa_idxset* pa_source_get_formats(pa_source *s) {
2809 if (s->get_formats) {
2810 /* Source supports format query, all is good */
2811 ret = s->get_formats(s);
2813 /* Source doesn't support format query, so assume it does PCM */
2814 pa_format_info *f = pa_format_info_new();
2815 f->encoding = PA_ENCODING_PCM;
2817 ret = pa_idxset_new(NULL, NULL);
2818 pa_idxset_put(ret, f, NULL);
2824 /* Called from the main thread */
2825 /* Checks if the source can accept this format */
2826 bool pa_source_check_format(pa_source *s, pa_format_info *f) {
2827 pa_idxset *formats = NULL;
2833 formats = pa_source_get_formats(s);
2836 pa_format_info *finfo_device;
2839 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2840 if (pa_format_info_is_compatible(finfo_device, f)) {
2846 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
2852 /* Called from the main thread */
2853 /* Calculates the intersection between formats supported by the source and
2854 * in_formats, and returns these, in the order of the source's formats. */
2855 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2856 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2857 pa_format_info *f_source, *f_in;
2862 if (!in_formats || pa_idxset_isempty(in_formats))
2865 source_formats = pa_source_get_formats(s);
2867 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2868 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2869 if (pa_format_info_is_compatible(f_source, f_in))
2870 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2876 pa_idxset_free(source_formats, (pa_free_cb_t) pa_format_info_free);
2881 /* Called from the main thread. */
2882 void pa_source_set_reference_volume_direct(pa_source *s, const pa_cvolume *volume) {
2883 pa_cvolume old_volume;
2884 char old_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
2885 char new_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
2890 old_volume = s->reference_volume;
2892 if (pa_cvolume_equal(volume, &old_volume))
2895 s->reference_volume = *volume;
2896 pa_log_debug("The reference volume of source %s changed from %s to %s.", s->name,
2897 pa_cvolume_snprint_verbose(old_volume_str, sizeof(old_volume_str), &old_volume, &s->channel_map,
2898 s->flags & PA_SOURCE_DECIBEL_VOLUME),
2899 pa_cvolume_snprint_verbose(new_volume_str, sizeof(new_volume_str), volume, &s->channel_map,
2900 s->flags & PA_SOURCE_DECIBEL_VOLUME));
2902 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2903 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_VOLUME_CHANGED], s);