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 bool 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;
977 bool use_alternate = false;
982 if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough)) {
983 pa_log_debug("Default and alternate sample rates are the same.");
987 if (PA_SOURCE_IS_RUNNING(s->state)) {
988 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u Hz",
989 s->sample_spec.rate);
993 if (PA_UNLIKELY (desired_rate < 8000 ||
994 desired_rate > PA_RATE_MAX))
998 pa_assert((default_rate % 4000 == 0) || (default_rate % 11025 == 0));
999 pa_assert((alternate_rate % 4000 == 0) || (alternate_rate % 11025 == 0));
1001 if (default_rate % 11025 == 0) {
1002 if ((alternate_rate % 4000 == 0) && (desired_rate % 4000 == 0))
1005 /* default is 4000 multiple */
1006 if ((alternate_rate % 11025 == 0) && (desired_rate % 11025 == 0))
1011 desired_rate = alternate_rate;
1013 desired_rate = default_rate;
1015 desired_rate = rate; /* use stream sampling rate, discard default/alternate settings */
1018 if (desired_rate == s->sample_spec.rate)
1021 if (!passthrough && pa_source_used_by(s) > 0)
1024 pa_log_debug("Suspending source %s due to changing the sample rate.", s->name);
1025 pa_source_suspend(s, true, PA_SUSPEND_INTERNAL);
1027 if (s->update_rate(s, desired_rate) == true) {
1028 pa_log_info("Changed sampling rate successfully ");
1030 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1031 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1032 pa_source_output_update_rate(o);
1037 pa_source_suspend(s, false, PA_SUSPEND_INTERNAL);
1042 /* Called from main thread */
1043 pa_usec_t pa_source_get_latency(pa_source *s) {
1046 pa_source_assert_ref(s);
1047 pa_assert_ctl_context();
1048 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1050 if (s->state == PA_SOURCE_SUSPENDED)
1053 if (!(s->flags & PA_SOURCE_LATENCY))
1056 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1058 /* usec is unsigned, so check that the offset can be added to usec without
1060 if (-s->latency_offset <= (int64_t) usec)
1061 usec += s->latency_offset;
1068 /* Called from IO thread */
1069 pa_usec_t pa_source_get_latency_within_thread(pa_source *s) {
1073 pa_source_assert_ref(s);
1074 pa_source_assert_io_context(s);
1075 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1077 /* The returned value is supposed to be in the time domain of the sound card! */
1079 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1082 if (!(s->flags & PA_SOURCE_LATENCY))
1085 o = PA_MSGOBJECT(s);
1087 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1089 if (o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1092 /* usec is unsigned, so check that the offset can be added to usec without
1094 if (-s->thread_info.latency_offset <= (int64_t) usec)
1095 usec += s->thread_info.latency_offset;
1102 /* Called from the main thread (and also from the IO thread while the main
1103 * thread is waiting).
1105 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1106 * set. Instead, flat volume mode is detected by checking whether the root source
1107 * has the flag set. */
1108 bool pa_source_flat_volume_enabled(pa_source *s) {
1109 pa_source_assert_ref(s);
1111 s = pa_source_get_master(s);
1114 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1119 /* Called from the main thread (and also from the IO thread while the main
1120 * thread is waiting). */
1121 pa_source *pa_source_get_master(pa_source *s) {
1122 pa_source_assert_ref(s);
1124 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1125 if (PA_UNLIKELY(!s->output_from_master))
1128 s = s->output_from_master->source;
1134 /* Called from main context */
1135 bool pa_source_is_passthrough(pa_source *s) {
1137 pa_source_assert_ref(s);
1139 /* NB Currently only monitor sources support passthrough mode */
1140 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1143 /* Called from main context */
1144 void pa_source_enter_passthrough(pa_source *s) {
1147 /* set the volume to NORM */
1148 s->saved_volume = *pa_source_get_volume(s, true);
1149 s->saved_save_volume = s->save_volume;
1151 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1152 pa_source_set_volume(s, &volume, true, false);
1155 /* Called from main context */
1156 void pa_source_leave_passthrough(pa_source *s) {
1157 /* Restore source volume to what it was before we entered passthrough mode */
1158 pa_source_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
1160 pa_cvolume_init(&s->saved_volume);
1161 s->saved_save_volume = false;
1164 /* Called from main context. */
1165 static void compute_reference_ratio(pa_source_output *o) {
1167 pa_cvolume remapped;
1170 pa_assert(pa_source_flat_volume_enabled(o->source));
1173 * Calculates the reference ratio from the source's reference
1174 * volume. This basically calculates:
1176 * o->reference_ratio = o->volume / o->source->reference_volume
1179 remapped = o->source->reference_volume;
1180 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1182 o->reference_ratio.channels = o->sample_spec.channels;
1184 for (c = 0; c < o->sample_spec.channels; c++) {
1186 /* We don't update when the source volume is 0 anyway */
1187 if (remapped.values[c] <= PA_VOLUME_MUTED)
1190 /* Don't update the reference ratio unless necessary */
1191 if (pa_sw_volume_multiply(
1192 o->reference_ratio.values[c],
1193 remapped.values[c]) == o->volume.values[c])
1196 o->reference_ratio.values[c] = pa_sw_volume_divide(
1197 o->volume.values[c],
1198 remapped.values[c]);
1202 /* Called from main context. Only called for the root source in volume sharing
1203 * cases, except for internal recursive calls. */
1204 static void compute_reference_ratios(pa_source *s) {
1206 pa_source_output *o;
1208 pa_source_assert_ref(s);
1209 pa_assert_ctl_context();
1210 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1211 pa_assert(pa_source_flat_volume_enabled(s));
1213 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1214 compute_reference_ratio(o);
1216 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1217 compute_reference_ratios(o->destination_source);
1221 /* Called from main context. Only called for the root source in volume sharing
1222 * cases, except for internal recursive calls. */
1223 static void compute_real_ratios(pa_source *s) {
1224 pa_source_output *o;
1227 pa_source_assert_ref(s);
1228 pa_assert_ctl_context();
1229 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1230 pa_assert(pa_source_flat_volume_enabled(s));
1232 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1234 pa_cvolume remapped;
1236 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1237 /* The origin source uses volume sharing, so this input's real ratio
1238 * is handled as a special case - the real ratio must be 0 dB, and
1239 * as a result i->soft_volume must equal i->volume_factor. */
1240 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1241 o->soft_volume = o->volume_factor;
1243 compute_real_ratios(o->destination_source);
1249 * This basically calculates:
1251 * i->real_ratio := i->volume / s->real_volume
1252 * i->soft_volume := i->real_ratio * i->volume_factor
1255 remapped = s->real_volume;
1256 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1258 o->real_ratio.channels = o->sample_spec.channels;
1259 o->soft_volume.channels = o->sample_spec.channels;
1261 for (c = 0; c < o->sample_spec.channels; c++) {
1263 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1264 /* We leave o->real_ratio untouched */
1265 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1269 /* Don't lose accuracy unless necessary */
1270 if (pa_sw_volume_multiply(
1271 o->real_ratio.values[c],
1272 remapped.values[c]) != o->volume.values[c])
1274 o->real_ratio.values[c] = pa_sw_volume_divide(
1275 o->volume.values[c],
1276 remapped.values[c]);
1278 o->soft_volume.values[c] = pa_sw_volume_multiply(
1279 o->real_ratio.values[c],
1280 o->volume_factor.values[c]);
1283 /* We don't copy the soft_volume to the thread_info data
1284 * here. That must be done by the caller */
1288 static pa_cvolume *cvolume_remap_minimal_impact(
1290 const pa_cvolume *template,
1291 const pa_channel_map *from,
1292 const pa_channel_map *to) {
1297 pa_assert(template);
1300 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1301 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1303 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1304 * mapping from source output to source volumes:
1306 * If template is a possible remapping from v it is used instead
1307 * of remapping anew.
1309 * If the channel maps don't match we set an all-channel volume on
1310 * the source to ensure that changing a volume on one stream has no
1311 * effect that cannot be compensated for in another stream that
1312 * does not have the same channel map as the source. */
1314 if (pa_channel_map_equal(from, to))
1318 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1323 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1327 /* Called from main thread. Only called for the root source in volume sharing
1328 * cases, except for internal recursive calls. */
1329 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1330 pa_source_output *o;
1333 pa_source_assert_ref(s);
1334 pa_assert(max_volume);
1335 pa_assert(channel_map);
1336 pa_assert(pa_source_flat_volume_enabled(s));
1338 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1339 pa_cvolume remapped;
1341 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1342 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1344 /* Ignore this output. The origin source uses volume sharing, so this
1345 * output's volume will be set to be equal to the root source's real
1346 * volume. Obviously this output's current volume must not then
1347 * affect what the root source's real volume will be. */
1351 remapped = o->volume;
1352 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1353 pa_cvolume_merge(max_volume, max_volume, &remapped);
1357 /* Called from main thread. Only called for the root source in volume sharing
1358 * cases, except for internal recursive calls. */
1359 static bool has_outputs(pa_source *s) {
1360 pa_source_output *o;
1363 pa_source_assert_ref(s);
1365 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1366 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1373 /* Called from main thread. Only called for the root source in volume sharing
1374 * cases, except for internal recursive calls. */
1375 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1376 pa_source_output *o;
1379 pa_source_assert_ref(s);
1380 pa_assert(new_volume);
1381 pa_assert(channel_map);
1383 s->real_volume = *new_volume;
1384 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1386 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1387 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1388 if (pa_source_flat_volume_enabled(s)) {
1389 pa_cvolume old_volume = o->volume;
1391 /* Follow the root source's real volume. */
1392 o->volume = *new_volume;
1393 pa_cvolume_remap(&o->volume, channel_map, &o->channel_map);
1394 compute_reference_ratio(o);
1396 /* The volume changed, let's tell people so */
1397 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1398 if (o->volume_changed)
1399 o->volume_changed(o);
1401 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1405 update_real_volume(o->destination_source, new_volume, channel_map);
1410 /* Called from main thread. Only called for the root source in shared volume
1412 static void compute_real_volume(pa_source *s) {
1413 pa_source_assert_ref(s);
1414 pa_assert_ctl_context();
1415 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1416 pa_assert(pa_source_flat_volume_enabled(s));
1417 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1419 /* This determines the maximum volume of all streams and sets
1420 * s->real_volume accordingly. */
1422 if (!has_outputs(s)) {
1423 /* In the special case that we have no source outputs we leave the
1424 * volume unmodified. */
1425 update_real_volume(s, &s->reference_volume, &s->channel_map);
1429 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1431 /* First let's determine the new maximum volume of all outputs
1432 * connected to this source */
1433 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1434 update_real_volume(s, &s->real_volume, &s->channel_map);
1436 /* Then, let's update the real ratios/soft volumes of all outputs
1437 * connected to this source */
1438 compute_real_ratios(s);
1441 /* Called from main thread. Only called for the root source in shared volume
1442 * cases, except for internal recursive calls. */
1443 static void propagate_reference_volume(pa_source *s) {
1444 pa_source_output *o;
1447 pa_source_assert_ref(s);
1448 pa_assert_ctl_context();
1449 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1450 pa_assert(pa_source_flat_volume_enabled(s));
1452 /* This is called whenever the source volume changes that is not
1453 * caused by a source output volume change. We need to fix up the
1454 * source output volumes accordingly */
1456 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1457 pa_cvolume old_volume;
1459 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1460 propagate_reference_volume(o->destination_source);
1462 /* Since the origin source uses volume sharing, this output's volume
1463 * needs to be updated to match the root source's real volume, but
1464 * that will be done later in update_shared_real_volume(). */
1468 old_volume = o->volume;
1470 /* This basically calculates:
1472 * o->volume := o->reference_volume * o->reference_ratio */
1474 o->volume = s->reference_volume;
1475 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1476 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1478 /* The volume changed, let's tell people so */
1479 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1481 if (o->volume_changed)
1482 o->volume_changed(o);
1484 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1489 /* Called from main thread. Only called for the root source in volume sharing
1490 * cases, except for internal recursive calls. The return value indicates
1491 * whether any reference volume actually changed. */
1492 static bool update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
1494 bool reference_volume_changed;
1495 pa_source_output *o;
1498 pa_source_assert_ref(s);
1499 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1501 pa_assert(channel_map);
1502 pa_assert(pa_cvolume_valid(v));
1505 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1507 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1508 s->reference_volume = volume;
1510 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1512 if (reference_volume_changed)
1513 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1514 else if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1515 /* If the root source's volume doesn't change, then there can't be any
1516 * changes in the other source in the source tree either.
1518 * It's probably theoretically possible that even if the root source's
1519 * volume changes slightly, some filter source doesn't change its volume
1520 * due to rounding errors. If that happens, we still want to propagate
1521 * the changed root source volume to the sources connected to the
1522 * intermediate source that didn't change its volume. This theoretical
1523 * possibility is the reason why we have that !(s->flags &
1524 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1525 * notice even if we returned here false always if
1526 * reference_volume_changed is false. */
1529 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1530 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1531 update_reference_volume(o->destination_source, v, channel_map, false);
1537 /* Called from main thread */
1538 void pa_source_set_volume(
1540 const pa_cvolume *volume,
1544 pa_cvolume new_reference_volume;
1545 pa_source *root_source;
1547 pa_source_assert_ref(s);
1548 pa_assert_ctl_context();
1549 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1550 pa_assert(!volume || pa_cvolume_valid(volume));
1551 pa_assert(volume || pa_source_flat_volume_enabled(s));
1552 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1554 /* make sure we don't change the volume in PASSTHROUGH mode ...
1555 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1556 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1557 pa_log_warn("Cannot change volume, source is monitor of a PASSTHROUGH sink");
1561 /* In case of volume sharing, the volume is set for the root source first,
1562 * from which it's then propagated to the sharing sources. */
1563 root_source = pa_source_get_master(s);
1565 if (PA_UNLIKELY(!root_source))
1568 /* As a special exception we accept mono volumes on all sources --
1569 * even on those with more complex channel maps */
1572 if (pa_cvolume_compatible(volume, &s->sample_spec))
1573 new_reference_volume = *volume;
1575 new_reference_volume = s->reference_volume;
1576 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1579 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1581 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1582 if (pa_source_flat_volume_enabled(root_source)) {
1583 /* OK, propagate this volume change back to the outputs */
1584 propagate_reference_volume(root_source);
1586 /* And now recalculate the real volume */
1587 compute_real_volume(root_source);
1589 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1593 /* If volume is NULL we synchronize the source's real and
1594 * reference volumes with the stream volumes. */
1596 pa_assert(pa_source_flat_volume_enabled(root_source));
1598 /* Ok, let's determine the new real volume */
1599 compute_real_volume(root_source);
1601 /* Let's 'push' the reference volume if necessary */
1602 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_source->real_volume);
1603 /* If the source and it's root don't have the same number of channels, we need to remap */
1604 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1605 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1606 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1608 /* Now that the reference volume is updated, we can update the streams'
1609 * reference ratios. */
1610 compute_reference_ratios(root_source);
1613 if (root_source->set_volume) {
1614 /* If we have a function set_volume(), then we do not apply a
1615 * soft volume by default. However, set_volume() is free to
1616 * apply one to root_source->soft_volume */
1618 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1619 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1620 root_source->set_volume(root_source);
1623 /* If we have no function set_volume(), then the soft volume
1624 * becomes the real volume */
1625 root_source->soft_volume = root_source->real_volume;
1627 /* This tells the source that soft volume and/or real volume changed */
1629 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1632 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1633 * Only to be called by source implementor */
1634 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1636 pa_source_assert_ref(s);
1637 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1639 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1640 pa_source_assert_io_context(s);
1642 pa_assert_ctl_context();
1645 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1647 s->soft_volume = *volume;
1649 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1650 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1652 s->thread_info.soft_volume = s->soft_volume;
1655 /* Called from the main thread. Only called for the root source in volume sharing
1656 * cases, except for internal recursive calls. */
1657 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1658 pa_source_output *o;
1661 pa_source_assert_ref(s);
1662 pa_assert(old_real_volume);
1663 pa_assert_ctl_context();
1664 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1666 /* This is called when the hardware's real volume changes due to
1667 * some external event. We copy the real volume into our
1668 * reference volume and then rebuild the stream volumes based on
1669 * i->real_ratio which should stay fixed. */
1671 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1672 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1675 /* 1. Make the real volume the reference volume */
1676 update_reference_volume(s, &s->real_volume, &s->channel_map, true);
1679 if (pa_source_flat_volume_enabled(s)) {
1681 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1682 pa_cvolume old_volume = o->volume;
1684 /* 2. Since the source's reference and real volumes are equal
1685 * now our ratios should be too. */
1686 o->reference_ratio = o->real_ratio;
1688 /* 3. Recalculate the new stream reference volume based on the
1689 * reference ratio and the sink's reference volume.
1691 * This basically calculates:
1693 * o->volume = s->reference_volume * o->reference_ratio
1695 * This is identical to propagate_reference_volume() */
1696 o->volume = s->reference_volume;
1697 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1698 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1700 /* Notify if something changed */
1701 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1703 if (o->volume_changed)
1704 o->volume_changed(o);
1706 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1709 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1710 propagate_real_volume(o->destination_source, old_real_volume);
1714 /* Something got changed in the hardware. It probably makes sense
1715 * to save changed hw settings given that hw volume changes not
1716 * triggered by PA are almost certainly done by the user. */
1717 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1718 s->save_volume = true;
1721 /* Called from io thread */
1722 void pa_source_update_volume_and_mute(pa_source *s) {
1724 pa_source_assert_io_context(s);
1726 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1729 /* Called from main thread */
1730 const pa_cvolume *pa_source_get_volume(pa_source *s, bool force_refresh) {
1731 pa_source_assert_ref(s);
1732 pa_assert_ctl_context();
1733 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1735 if (s->refresh_volume || force_refresh) {
1736 struct pa_cvolume old_real_volume;
1738 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1740 old_real_volume = s->real_volume;
1742 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1745 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1747 update_real_volume(s, &s->real_volume, &s->channel_map);
1748 propagate_real_volume(s, &old_real_volume);
1751 return &s->reference_volume;
1754 /* Called from main thread. In volume sharing cases, only the root source may
1756 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1757 pa_cvolume old_real_volume;
1759 pa_source_assert_ref(s);
1760 pa_assert_ctl_context();
1761 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1762 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1764 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1766 old_real_volume = s->real_volume;
1767 update_real_volume(s, new_real_volume, &s->channel_map);
1768 propagate_real_volume(s, &old_real_volume);
1771 /* Called from main thread */
1772 void pa_source_set_mute(pa_source *s, bool mute, bool save) {
1775 pa_source_assert_ref(s);
1776 pa_assert_ctl_context();
1777 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1779 old_muted = s->muted;
1781 s->save_muted = (old_muted == s->muted && s->save_muted) || save;
1783 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute)
1786 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1788 if (old_muted != s->muted)
1789 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1792 /* Called from main thread */
1793 bool pa_source_get_mute(pa_source *s, bool force_refresh) {
1795 pa_source_assert_ref(s);
1796 pa_assert_ctl_context();
1797 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1799 if (s->refresh_muted || force_refresh) {
1800 bool old_muted = s->muted;
1802 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_mute)
1805 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, NULL, 0, NULL) == 0);
1807 if (old_muted != s->muted) {
1808 s->save_muted = true;
1810 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1812 /* Make sure the soft mute status stays in sync */
1813 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1820 /* Called from main thread */
1821 void pa_source_mute_changed(pa_source *s, bool new_muted) {
1822 pa_source_assert_ref(s);
1823 pa_assert_ctl_context();
1824 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1826 /* The source implementor may call this if the mute state changed to make sure everyone is notified */
1828 if (s->muted == new_muted)
1831 s->muted = new_muted;
1832 s->save_muted = true;
1834 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1837 /* Called from main thread */
1838 bool pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1839 pa_source_assert_ref(s);
1840 pa_assert_ctl_context();
1843 pa_proplist_update(s->proplist, mode, p);
1845 if (PA_SOURCE_IS_LINKED(s->state)) {
1846 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1847 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1853 /* Called from main thread */
1854 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1855 void pa_source_set_description(pa_source *s, const char *description) {
1857 pa_source_assert_ref(s);
1858 pa_assert_ctl_context();
1860 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1863 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1865 if (old && description && pa_streq(old, description))
1869 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1871 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1873 if (PA_SOURCE_IS_LINKED(s->state)) {
1874 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1875 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1879 /* Called from main thread */
1880 unsigned pa_source_linked_by(pa_source *s) {
1881 pa_source_assert_ref(s);
1882 pa_assert_ctl_context();
1883 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1885 return pa_idxset_size(s->outputs);
1888 /* Called from main thread */
1889 unsigned pa_source_used_by(pa_source *s) {
1892 pa_source_assert_ref(s);
1893 pa_assert_ctl_context();
1894 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1896 ret = pa_idxset_size(s->outputs);
1897 pa_assert(ret >= s->n_corked);
1899 return ret - s->n_corked;
1902 /* Called from main thread */
1903 unsigned pa_source_check_suspend(pa_source *s) {
1905 pa_source_output *o;
1908 pa_source_assert_ref(s);
1909 pa_assert_ctl_context();
1911 if (!PA_SOURCE_IS_LINKED(s->state))
1916 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1917 pa_source_output_state_t st;
1919 st = pa_source_output_get_state(o);
1921 /* We do not assert here. It is perfectly valid for a source output to
1922 * be in the INIT state (i.e. created, marked done but not yet put)
1923 * and we should not care if it's unlinked as it won't contribute
1924 * towards our busy status.
1926 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1929 if (st == PA_SOURCE_OUTPUT_CORKED)
1932 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
1941 /* Called from the IO thread */
1942 static void sync_output_volumes_within_thread(pa_source *s) {
1943 pa_source_output *o;
1946 pa_source_assert_ref(s);
1947 pa_source_assert_io_context(s);
1949 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1950 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
1953 o->thread_info.soft_volume = o->soft_volume;
1954 //pa_source_output_request_rewind(o, 0, true, false, false);
1958 /* Called from the IO thread. Only called for the root source in volume sharing
1959 * cases, except for internal recursive calls. */
1960 static void set_shared_volume_within_thread(pa_source *s) {
1961 pa_source_output *o;
1964 pa_source_assert_ref(s);
1966 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
1968 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1969 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1970 set_shared_volume_within_thread(o->destination_source);
1974 /* Called from IO thread, except when it is not */
1975 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1976 pa_source *s = PA_SOURCE(object);
1977 pa_source_assert_ref(s);
1979 switch ((pa_source_message_t) code) {
1981 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
1982 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
1984 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
1986 if (o->direct_on_input) {
1987 o->thread_info.direct_on_input = o->direct_on_input;
1988 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
1991 pa_assert(!o->thread_info.attached);
1992 o->thread_info.attached = true;
1997 pa_source_output_set_state_within_thread(o, o->state);
1999 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
2000 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2002 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2004 /* We don't just invalidate the requested latency here,
2005 * because if we are in a move we might need to fix up the
2006 * requested latency. */
2007 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2009 /* In flat volume mode we need to update the volume as
2011 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2014 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
2015 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2017 pa_source_output_set_state_within_thread(o, o->state);
2022 pa_assert(o->thread_info.attached);
2023 o->thread_info.attached = false;
2025 if (o->thread_info.direct_on_input) {
2026 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
2027 o->thread_info.direct_on_input = NULL;
2030 if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
2031 pa_source_output_unref(o);
2033 pa_source_invalidate_requested_latency(s, true);
2035 /* In flat volume mode we need to update the volume as
2037 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2040 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
2041 pa_source *root_source = pa_source_get_master(s);
2043 if (PA_LIKELY(root_source))
2044 set_shared_volume_within_thread(root_source);
2049 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
2051 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2053 pa_source_volume_change_push(s);
2055 /* Fall through ... */
2057 case PA_SOURCE_MESSAGE_SET_VOLUME:
2059 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2060 s->thread_info.soft_volume = s->soft_volume;
2063 /* Fall through ... */
2065 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
2066 sync_output_volumes_within_thread(s);
2069 case PA_SOURCE_MESSAGE_GET_VOLUME:
2071 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
2073 pa_source_volume_change_flush(s);
2074 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2077 /* In case source implementor reset SW volume. */
2078 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2079 s->thread_info.soft_volume = s->soft_volume;
2084 case PA_SOURCE_MESSAGE_SET_MUTE:
2086 if (s->thread_info.soft_muted != s->muted) {
2087 s->thread_info.soft_muted = s->muted;
2090 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2095 case PA_SOURCE_MESSAGE_GET_MUTE:
2097 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2102 case PA_SOURCE_MESSAGE_SET_STATE: {
2104 bool suspend_change =
2105 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2106 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
2108 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2110 if (suspend_change) {
2111 pa_source_output *o;
2114 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2115 if (o->suspend_within_thread)
2116 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2122 case PA_SOURCE_MESSAGE_DETACH:
2124 /* Detach all streams */
2125 pa_source_detach_within_thread(s);
2128 case PA_SOURCE_MESSAGE_ATTACH:
2130 /* Reattach all streams */
2131 pa_source_attach_within_thread(s);
2134 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2136 pa_usec_t *usec = userdata;
2137 *usec = pa_source_get_requested_latency_within_thread(s);
2139 /* Yes, that's right, the IO thread will see -1 when no
2140 * explicit requested latency is configured, the main
2141 * thread will see max_latency */
2142 if (*usec == (pa_usec_t) -1)
2143 *usec = s->thread_info.max_latency;
2148 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2149 pa_usec_t *r = userdata;
2151 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2156 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2157 pa_usec_t *r = userdata;
2159 r[0] = s->thread_info.min_latency;
2160 r[1] = s->thread_info.max_latency;
2165 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2167 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2170 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2172 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2175 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2177 *((size_t*) userdata) = s->thread_info.max_rewind;
2180 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2182 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2185 case PA_SOURCE_MESSAGE_GET_LATENCY:
2187 if (s->monitor_of) {
2188 *((pa_usec_t*) userdata) = 0;
2192 /* Implementors need to overwrite this implementation! */
2195 case PA_SOURCE_MESSAGE_SET_PORT:
2197 pa_assert(userdata);
2199 struct source_message_set_port *msg_data = userdata;
2200 msg_data->ret = s->set_port(s, msg_data->port);
2204 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2205 /* This message is sent from IO-thread and handled in main thread. */
2206 pa_assert_ctl_context();
2208 /* Make sure we're not messing with main thread when no longer linked */
2209 if (!PA_SOURCE_IS_LINKED(s->state))
2212 pa_source_get_volume(s, true);
2213 pa_source_get_mute(s, true);
2216 case PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET:
2217 s->thread_info.latency_offset = offset;
2220 case PA_SOURCE_MESSAGE_MAX:
2227 /* Called from main thread */
2228 int pa_source_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
2233 pa_core_assert_ref(c);
2234 pa_assert_ctl_context();
2235 pa_assert(cause != 0);
2237 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2240 if (source->monitor_of)
2243 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2250 /* Called from main thread */
2251 void pa_source_detach(pa_source *s) {
2252 pa_source_assert_ref(s);
2253 pa_assert_ctl_context();
2254 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2256 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL) == 0);
2259 /* Called from main thread */
2260 void pa_source_attach(pa_source *s) {
2261 pa_source_assert_ref(s);
2262 pa_assert_ctl_context();
2263 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2265 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
2268 /* Called from IO thread */
2269 void pa_source_detach_within_thread(pa_source *s) {
2270 pa_source_output *o;
2273 pa_source_assert_ref(s);
2274 pa_source_assert_io_context(s);
2275 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2277 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2282 /* Called from IO thread */
2283 void pa_source_attach_within_thread(pa_source *s) {
2284 pa_source_output *o;
2287 pa_source_assert_ref(s);
2288 pa_source_assert_io_context(s);
2289 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2291 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2296 /* Called from IO thread */
2297 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2298 pa_usec_t result = (pa_usec_t) -1;
2299 pa_source_output *o;
2302 pa_source_assert_ref(s);
2303 pa_source_assert_io_context(s);
2305 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2306 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2308 if (s->thread_info.requested_latency_valid)
2309 return s->thread_info.requested_latency;
2311 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2312 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2313 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2314 result = o->thread_info.requested_source_latency;
2316 if (result != (pa_usec_t) -1)
2317 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2319 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2320 /* Only cache this if we are fully set up */
2321 s->thread_info.requested_latency = result;
2322 s->thread_info.requested_latency_valid = true;
2328 /* Called from main thread */
2329 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2332 pa_source_assert_ref(s);
2333 pa_assert_ctl_context();
2334 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2336 if (s->state == PA_SOURCE_SUSPENDED)
2339 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2344 /* Called from IO thread */
2345 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2346 pa_source_output *o;
2349 pa_source_assert_ref(s);
2350 pa_source_assert_io_context(s);
2352 if (max_rewind == s->thread_info.max_rewind)
2355 s->thread_info.max_rewind = max_rewind;
2357 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2358 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2359 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2362 /* Called from main thread */
2363 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2364 pa_source_assert_ref(s);
2365 pa_assert_ctl_context();
2367 if (PA_SOURCE_IS_LINKED(s->state))
2368 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2370 pa_source_set_max_rewind_within_thread(s, max_rewind);
2373 /* Called from IO thread */
2374 void pa_source_invalidate_requested_latency(pa_source *s, bool dynamic) {
2375 pa_source_output *o;
2378 pa_source_assert_ref(s);
2379 pa_source_assert_io_context(s);
2381 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2382 s->thread_info.requested_latency_valid = false;
2386 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2388 if (s->update_requested_latency)
2389 s->update_requested_latency(s);
2391 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2392 if (o->update_source_requested_latency)
2393 o->update_source_requested_latency(o);
2397 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2400 /* Called from main thread */
2401 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2402 pa_source_assert_ref(s);
2403 pa_assert_ctl_context();
2405 /* min_latency == 0: no limit
2406 * min_latency anything else: specified limit
2408 * Similar for max_latency */
2410 if (min_latency < ABSOLUTE_MIN_LATENCY)
2411 min_latency = ABSOLUTE_MIN_LATENCY;
2413 if (max_latency <= 0 ||
2414 max_latency > ABSOLUTE_MAX_LATENCY)
2415 max_latency = ABSOLUTE_MAX_LATENCY;
2417 pa_assert(min_latency <= max_latency);
2419 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2420 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2421 max_latency == ABSOLUTE_MAX_LATENCY) ||
2422 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2424 if (PA_SOURCE_IS_LINKED(s->state)) {
2430 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2432 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2435 /* Called from main thread */
2436 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2437 pa_source_assert_ref(s);
2438 pa_assert_ctl_context();
2439 pa_assert(min_latency);
2440 pa_assert(max_latency);
2442 if (PA_SOURCE_IS_LINKED(s->state)) {
2443 pa_usec_t r[2] = { 0, 0 };
2445 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2447 *min_latency = r[0];
2448 *max_latency = r[1];
2450 *min_latency = s->thread_info.min_latency;
2451 *max_latency = s->thread_info.max_latency;
2455 /* Called from IO thread, and from main thread before pa_source_put() is called */
2456 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2457 pa_source_assert_ref(s);
2458 pa_source_assert_io_context(s);
2460 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2461 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2462 pa_assert(min_latency <= max_latency);
2464 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2465 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2466 max_latency == ABSOLUTE_MAX_LATENCY) ||
2467 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2470 if (s->thread_info.min_latency == min_latency &&
2471 s->thread_info.max_latency == max_latency)
2474 s->thread_info.min_latency = min_latency;
2475 s->thread_info.max_latency = max_latency;
2477 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2478 pa_source_output *o;
2481 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2482 if (o->update_source_latency_range)
2483 o->update_source_latency_range(o);
2486 pa_source_invalidate_requested_latency(s, false);
2489 /* Called from main thread, before the source is put */
2490 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2491 pa_source_assert_ref(s);
2492 pa_assert_ctl_context();
2494 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2495 pa_assert(latency == 0);
2499 if (latency < ABSOLUTE_MIN_LATENCY)
2500 latency = ABSOLUTE_MIN_LATENCY;
2502 if (latency > ABSOLUTE_MAX_LATENCY)
2503 latency = ABSOLUTE_MAX_LATENCY;
2505 if (PA_SOURCE_IS_LINKED(s->state))
2506 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2508 s->thread_info.fixed_latency = latency;
2511 /* Called from main thread */
2512 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2515 pa_source_assert_ref(s);
2516 pa_assert_ctl_context();
2518 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2521 if (PA_SOURCE_IS_LINKED(s->state))
2522 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2524 latency = s->thread_info.fixed_latency;
2529 /* Called from IO thread */
2530 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2531 pa_source_assert_ref(s);
2532 pa_source_assert_io_context(s);
2534 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2535 pa_assert(latency == 0);
2536 s->thread_info.fixed_latency = 0;
2541 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2542 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2544 if (s->thread_info.fixed_latency == latency)
2547 s->thread_info.fixed_latency = latency;
2549 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2550 pa_source_output *o;
2553 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2554 if (o->update_source_fixed_latency)
2555 o->update_source_fixed_latency(o);
2558 pa_source_invalidate_requested_latency(s, false);
2561 /* Called from main thread */
2562 void pa_source_set_latency_offset(pa_source *s, int64_t offset) {
2563 pa_source_assert_ref(s);
2565 s->latency_offset = offset;
2567 if (PA_SOURCE_IS_LINKED(s->state))
2568 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET, NULL, offset, NULL) == 0);
2570 s->thread_info.latency_offset = offset;
2573 /* Called from main thread */
2574 size_t pa_source_get_max_rewind(pa_source *s) {
2576 pa_assert_ctl_context();
2577 pa_source_assert_ref(s);
2579 if (!PA_SOURCE_IS_LINKED(s->state))
2580 return s->thread_info.max_rewind;
2582 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2587 /* Called from main context */
2588 int pa_source_set_port(pa_source *s, const char *name, bool save) {
2589 pa_device_port *port;
2592 pa_source_assert_ref(s);
2593 pa_assert_ctl_context();
2596 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2597 return -PA_ERR_NOTIMPLEMENTED;
2601 return -PA_ERR_NOENTITY;
2603 if (!(port = pa_hashmap_get(s->ports, name)))
2604 return -PA_ERR_NOENTITY;
2606 if (s->active_port == port) {
2607 s->save_port = s->save_port || save;
2611 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2612 struct source_message_set_port msg = { .port = port, .ret = 0 };
2613 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2617 ret = s->set_port(s, port);
2620 return -PA_ERR_NOENTITY;
2622 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2624 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2626 s->active_port = port;
2627 s->save_port = save;
2629 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2634 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2636 /* Called from the IO thread. */
2637 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2638 pa_source_volume_change *c;
2639 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2640 c = pa_xnew(pa_source_volume_change, 1);
2642 PA_LLIST_INIT(pa_source_volume_change, c);
2644 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2648 /* Called from the IO thread. */
2649 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2651 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2655 /* Called from the IO thread. */
2656 void pa_source_volume_change_push(pa_source *s) {
2657 pa_source_volume_change *c = NULL;
2658 pa_source_volume_change *nc = NULL;
2659 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2661 const char *direction = NULL;
2664 nc = pa_source_volume_change_new(s);
2666 /* NOTE: There is already more different volumes in pa_source that I can remember.
2667 * Adding one more volume for HW would get us rid of this, but I am trying
2668 * to survive with the ones we already have. */
2669 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2671 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2672 pa_log_debug("Volume not changing");
2673 pa_source_volume_change_free(nc);
2677 nc->at = pa_source_get_latency_within_thread(s);
2678 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2680 if (s->thread_info.volume_changes_tail) {
2681 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2682 /* If volume is going up let's do it a bit late. If it is going
2683 * down let's do it a bit early. */
2684 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2685 if (nc->at + safety_margin > c->at) {
2686 nc->at += safety_margin;
2691 else if (nc->at - safety_margin > c->at) {
2692 nc->at -= safety_margin;
2700 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2701 nc->at += safety_margin;
2704 nc->at -= safety_margin;
2707 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2710 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2713 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2715 /* We can ignore volume events that came earlier but should happen later than this. */
2716 PA_LLIST_FOREACH(c, nc->next) {
2717 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2718 pa_source_volume_change_free(c);
2721 s->thread_info.volume_changes_tail = nc;
2724 /* Called from the IO thread. */
2725 static void pa_source_volume_change_flush(pa_source *s) {
2726 pa_source_volume_change *c = s->thread_info.volume_changes;
2728 s->thread_info.volume_changes = NULL;
2729 s->thread_info.volume_changes_tail = NULL;
2731 pa_source_volume_change *next = c->next;
2732 pa_source_volume_change_free(c);
2737 /* Called from the IO thread. */
2738 bool pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2744 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2750 pa_assert(s->write_volume);
2752 now = pa_rtclock_now();
2754 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2755 pa_source_volume_change *c = s->thread_info.volume_changes;
2756 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2757 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2758 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2760 s->thread_info.current_hw_volume = c->hw_volume;
2761 pa_source_volume_change_free(c);
2767 if (s->thread_info.volume_changes) {
2769 *usec_to_next = s->thread_info.volume_changes->at - now;
2770 if (pa_log_ratelimit(PA_LOG_DEBUG))
2771 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2776 s->thread_info.volume_changes_tail = NULL;
2781 /* Called from the main thread */
2782 /* Gets the list of formats supported by the source. The members and idxset must
2783 * be freed by the caller. */
2784 pa_idxset* pa_source_get_formats(pa_source *s) {
2789 if (s->get_formats) {
2790 /* Source supports format query, all is good */
2791 ret = s->get_formats(s);
2793 /* Source doesn't support format query, so assume it does PCM */
2794 pa_format_info *f = pa_format_info_new();
2795 f->encoding = PA_ENCODING_PCM;
2797 ret = pa_idxset_new(NULL, NULL);
2798 pa_idxset_put(ret, f, NULL);
2804 /* Called from the main thread */
2805 /* Checks if the source can accept this format */
2806 bool pa_source_check_format(pa_source *s, pa_format_info *f) {
2807 pa_idxset *formats = NULL;
2813 formats = pa_source_get_formats(s);
2816 pa_format_info *finfo_device;
2819 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2820 if (pa_format_info_is_compatible(finfo_device, f)) {
2826 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
2832 /* Called from the main thread */
2833 /* Calculates the intersection between formats supported by the source and
2834 * in_formats, and returns these, in the order of the source's formats. */
2835 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2836 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2837 pa_format_info *f_source, *f_in;
2842 if (!in_formats || pa_idxset_isempty(in_formats))
2845 source_formats = pa_source_get_formats(s);
2847 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2848 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2849 if (pa_format_info_is_compatible(f_source, f_in))
2850 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2856 pa_idxset_free(source_formats, (pa_free_cb_t) pa_format_info_free);