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;
975 bool use_alternate = false;
977 if (rate == s->sample_spec.rate)
980 if (!s->update_rate && !s->monitor_of)
983 if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough)) {
984 pa_log_debug("Default and alternate sample rates are the same.");
988 if (PA_SOURCE_IS_RUNNING(s->state)) {
989 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u Hz",
990 s->sample_spec.rate);
994 if (PA_UNLIKELY (desired_rate < 8000 ||
995 desired_rate > PA_RATE_MAX))
999 pa_assert((default_rate % 4000 == 0) || (default_rate % 11025 == 0));
1000 pa_assert((alternate_rate % 4000 == 0) || (alternate_rate % 11025 == 0));
1002 if (default_rate % 11025 == 0) {
1003 if ((alternate_rate % 4000 == 0) && (desired_rate % 4000 == 0))
1006 /* default is 4000 multiple */
1007 if ((alternate_rate % 11025 == 0) && (desired_rate % 11025 == 0))
1012 desired_rate = alternate_rate;
1014 desired_rate = default_rate;
1016 desired_rate = rate; /* use stream sampling rate, discard default/alternate settings */
1019 if (desired_rate == s->sample_spec.rate)
1022 if (!passthrough && pa_source_used_by(s) > 0)
1025 pa_log_debug("Suspending source %s due to changing the sample rate.", s->name);
1026 pa_source_suspend(s, true, PA_SUSPEND_INTERNAL);
1029 ret = s->update_rate(s, desired_rate);
1031 /* This is a monitor source. */
1032 s->sample_spec.rate = desired_rate;
1038 pa_source_output *o;
1040 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1041 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1042 pa_source_output_update_rate(o);
1045 pa_log_info("Changed sampling rate successfully");
1048 pa_source_suspend(s, false, PA_SUSPEND_INTERNAL);
1053 /* Called from main thread */
1054 pa_usec_t pa_source_get_latency(pa_source *s) {
1057 pa_source_assert_ref(s);
1058 pa_assert_ctl_context();
1059 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1061 if (s->state == PA_SOURCE_SUSPENDED)
1064 if (!(s->flags & PA_SOURCE_LATENCY))
1067 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1069 /* usec is unsigned, so check that the offset can be added to usec without
1071 if (-s->latency_offset <= (int64_t) usec)
1072 usec += s->latency_offset;
1079 /* Called from IO thread */
1080 pa_usec_t pa_source_get_latency_within_thread(pa_source *s) {
1084 pa_source_assert_ref(s);
1085 pa_source_assert_io_context(s);
1086 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1088 /* The returned value is supposed to be in the time domain of the sound card! */
1090 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1093 if (!(s->flags & PA_SOURCE_LATENCY))
1096 o = PA_MSGOBJECT(s);
1098 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1100 if (o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1103 /* usec is unsigned, so check that the offset can be added to usec without
1105 if (-s->thread_info.latency_offset <= (int64_t) usec)
1106 usec += s->thread_info.latency_offset;
1113 /* Called from the main thread (and also from the IO thread while the main
1114 * thread is waiting).
1116 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1117 * set. Instead, flat volume mode is detected by checking whether the root source
1118 * has the flag set. */
1119 bool pa_source_flat_volume_enabled(pa_source *s) {
1120 pa_source_assert_ref(s);
1122 s = pa_source_get_master(s);
1125 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1130 /* Called from the main thread (and also from the IO thread while the main
1131 * thread is waiting). */
1132 pa_source *pa_source_get_master(pa_source *s) {
1133 pa_source_assert_ref(s);
1135 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1136 if (PA_UNLIKELY(!s->output_from_master))
1139 s = s->output_from_master->source;
1145 /* Called from main context */
1146 bool pa_source_is_passthrough(pa_source *s) {
1148 pa_source_assert_ref(s);
1150 /* NB Currently only monitor sources support passthrough mode */
1151 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1154 /* Called from main context */
1155 void pa_source_enter_passthrough(pa_source *s) {
1158 /* set the volume to NORM */
1159 s->saved_volume = *pa_source_get_volume(s, true);
1160 s->saved_save_volume = s->save_volume;
1162 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1163 pa_source_set_volume(s, &volume, true, false);
1166 /* Called from main context */
1167 void pa_source_leave_passthrough(pa_source *s) {
1168 /* Restore source volume to what it was before we entered passthrough mode */
1169 pa_source_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
1171 pa_cvolume_init(&s->saved_volume);
1172 s->saved_save_volume = false;
1175 /* Called from main context. */
1176 static void compute_reference_ratio(pa_source_output *o) {
1178 pa_cvolume remapped;
1181 pa_assert(pa_source_flat_volume_enabled(o->source));
1184 * Calculates the reference ratio from the source's reference
1185 * volume. This basically calculates:
1187 * o->reference_ratio = o->volume / o->source->reference_volume
1190 remapped = o->source->reference_volume;
1191 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1193 o->reference_ratio.channels = o->sample_spec.channels;
1195 for (c = 0; c < o->sample_spec.channels; c++) {
1197 /* We don't update when the source volume is 0 anyway */
1198 if (remapped.values[c] <= PA_VOLUME_MUTED)
1201 /* Don't update the reference ratio unless necessary */
1202 if (pa_sw_volume_multiply(
1203 o->reference_ratio.values[c],
1204 remapped.values[c]) == o->volume.values[c])
1207 o->reference_ratio.values[c] = pa_sw_volume_divide(
1208 o->volume.values[c],
1209 remapped.values[c]);
1213 /* Called from main context. Only called for the root source in volume sharing
1214 * cases, except for internal recursive calls. */
1215 static void compute_reference_ratios(pa_source *s) {
1217 pa_source_output *o;
1219 pa_source_assert_ref(s);
1220 pa_assert_ctl_context();
1221 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1222 pa_assert(pa_source_flat_volume_enabled(s));
1224 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1225 compute_reference_ratio(o);
1227 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1228 compute_reference_ratios(o->destination_source);
1232 /* Called from main context. Only called for the root source in volume sharing
1233 * cases, except for internal recursive calls. */
1234 static void compute_real_ratios(pa_source *s) {
1235 pa_source_output *o;
1238 pa_source_assert_ref(s);
1239 pa_assert_ctl_context();
1240 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1241 pa_assert(pa_source_flat_volume_enabled(s));
1243 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1245 pa_cvolume remapped;
1247 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1248 /* The origin source uses volume sharing, so this input's real ratio
1249 * is handled as a special case - the real ratio must be 0 dB, and
1250 * as a result i->soft_volume must equal i->volume_factor. */
1251 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1252 o->soft_volume = o->volume_factor;
1254 compute_real_ratios(o->destination_source);
1260 * This basically calculates:
1262 * i->real_ratio := i->volume / s->real_volume
1263 * i->soft_volume := i->real_ratio * i->volume_factor
1266 remapped = s->real_volume;
1267 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1269 o->real_ratio.channels = o->sample_spec.channels;
1270 o->soft_volume.channels = o->sample_spec.channels;
1272 for (c = 0; c < o->sample_spec.channels; c++) {
1274 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1275 /* We leave o->real_ratio untouched */
1276 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1280 /* Don't lose accuracy unless necessary */
1281 if (pa_sw_volume_multiply(
1282 o->real_ratio.values[c],
1283 remapped.values[c]) != o->volume.values[c])
1285 o->real_ratio.values[c] = pa_sw_volume_divide(
1286 o->volume.values[c],
1287 remapped.values[c]);
1289 o->soft_volume.values[c] = pa_sw_volume_multiply(
1290 o->real_ratio.values[c],
1291 o->volume_factor.values[c]);
1294 /* We don't copy the soft_volume to the thread_info data
1295 * here. That must be done by the caller */
1299 static pa_cvolume *cvolume_remap_minimal_impact(
1301 const pa_cvolume *template,
1302 const pa_channel_map *from,
1303 const pa_channel_map *to) {
1308 pa_assert(template);
1311 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1312 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1314 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1315 * mapping from source output to source volumes:
1317 * If template is a possible remapping from v it is used instead
1318 * of remapping anew.
1320 * If the channel maps don't match we set an all-channel volume on
1321 * the source to ensure that changing a volume on one stream has no
1322 * effect that cannot be compensated for in another stream that
1323 * does not have the same channel map as the source. */
1325 if (pa_channel_map_equal(from, to))
1329 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1334 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1338 /* Called from main thread. Only called for the root source in volume sharing
1339 * cases, except for internal recursive calls. */
1340 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1341 pa_source_output *o;
1344 pa_source_assert_ref(s);
1345 pa_assert(max_volume);
1346 pa_assert(channel_map);
1347 pa_assert(pa_source_flat_volume_enabled(s));
1349 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1350 pa_cvolume remapped;
1352 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1353 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1355 /* Ignore this output. The origin source uses volume sharing, so this
1356 * output's volume will be set to be equal to the root source's real
1357 * volume. Obviously this output's current volume must not then
1358 * affect what the root source's real volume will be. */
1362 remapped = o->volume;
1363 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1364 pa_cvolume_merge(max_volume, max_volume, &remapped);
1368 /* Called from main thread. Only called for the root source in volume sharing
1369 * cases, except for internal recursive calls. */
1370 static bool has_outputs(pa_source *s) {
1371 pa_source_output *o;
1374 pa_source_assert_ref(s);
1376 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1377 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1384 /* Called from main thread. Only called for the root source in volume sharing
1385 * cases, except for internal recursive calls. */
1386 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1387 pa_source_output *o;
1390 pa_source_assert_ref(s);
1391 pa_assert(new_volume);
1392 pa_assert(channel_map);
1394 s->real_volume = *new_volume;
1395 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1397 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1398 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1399 if (pa_source_flat_volume_enabled(s)) {
1400 pa_cvolume old_volume = o->volume;
1402 /* Follow the root source's real volume. */
1403 o->volume = *new_volume;
1404 pa_cvolume_remap(&o->volume, channel_map, &o->channel_map);
1405 compute_reference_ratio(o);
1407 /* The volume changed, let's tell people so */
1408 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1409 if (o->volume_changed)
1410 o->volume_changed(o);
1412 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1416 update_real_volume(o->destination_source, new_volume, channel_map);
1421 /* Called from main thread. Only called for the root source in shared volume
1423 static void compute_real_volume(pa_source *s) {
1424 pa_source_assert_ref(s);
1425 pa_assert_ctl_context();
1426 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1427 pa_assert(pa_source_flat_volume_enabled(s));
1428 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1430 /* This determines the maximum volume of all streams and sets
1431 * s->real_volume accordingly. */
1433 if (!has_outputs(s)) {
1434 /* In the special case that we have no source outputs we leave the
1435 * volume unmodified. */
1436 update_real_volume(s, &s->reference_volume, &s->channel_map);
1440 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1442 /* First let's determine the new maximum volume of all outputs
1443 * connected to this source */
1444 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1445 update_real_volume(s, &s->real_volume, &s->channel_map);
1447 /* Then, let's update the real ratios/soft volumes of all outputs
1448 * connected to this source */
1449 compute_real_ratios(s);
1452 /* Called from main thread. Only called for the root source in shared volume
1453 * cases, except for internal recursive calls. */
1454 static void propagate_reference_volume(pa_source *s) {
1455 pa_source_output *o;
1458 pa_source_assert_ref(s);
1459 pa_assert_ctl_context();
1460 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1461 pa_assert(pa_source_flat_volume_enabled(s));
1463 /* This is called whenever the source volume changes that is not
1464 * caused by a source output volume change. We need to fix up the
1465 * source output volumes accordingly */
1467 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1468 pa_cvolume old_volume;
1470 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1471 propagate_reference_volume(o->destination_source);
1473 /* Since the origin source uses volume sharing, this output's volume
1474 * needs to be updated to match the root source's real volume, but
1475 * that will be done later in update_shared_real_volume(). */
1479 old_volume = o->volume;
1481 /* This basically calculates:
1483 * o->volume := o->reference_volume * o->reference_ratio */
1485 o->volume = s->reference_volume;
1486 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1487 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1489 /* The volume changed, let's tell people so */
1490 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1492 if (o->volume_changed)
1493 o->volume_changed(o);
1495 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1500 /* Called from main thread. Only called for the root source in volume sharing
1501 * cases, except for internal recursive calls. The return value indicates
1502 * whether any reference volume actually changed. */
1503 static bool update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
1505 bool reference_volume_changed;
1506 pa_source_output *o;
1509 pa_source_assert_ref(s);
1510 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1512 pa_assert(channel_map);
1513 pa_assert(pa_cvolume_valid(v));
1516 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1518 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1519 s->reference_volume = volume;
1521 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1523 if (reference_volume_changed)
1524 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1525 else if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1526 /* If the root source's volume doesn't change, then there can't be any
1527 * changes in the other source in the source tree either.
1529 * It's probably theoretically possible that even if the root source's
1530 * volume changes slightly, some filter source doesn't change its volume
1531 * due to rounding errors. If that happens, we still want to propagate
1532 * the changed root source volume to the sources connected to the
1533 * intermediate source that didn't change its volume. This theoretical
1534 * possibility is the reason why we have that !(s->flags &
1535 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1536 * notice even if we returned here false always if
1537 * reference_volume_changed is false. */
1540 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1541 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1542 update_reference_volume(o->destination_source, v, channel_map, false);
1548 /* Called from main thread */
1549 void pa_source_set_volume(
1551 const pa_cvolume *volume,
1555 pa_cvolume new_reference_volume;
1556 pa_source *root_source;
1558 pa_source_assert_ref(s);
1559 pa_assert_ctl_context();
1560 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1561 pa_assert(!volume || pa_cvolume_valid(volume));
1562 pa_assert(volume || pa_source_flat_volume_enabled(s));
1563 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1565 /* make sure we don't change the volume in PASSTHROUGH mode ...
1566 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1567 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1568 pa_log_warn("Cannot change volume, source is monitor of a PASSTHROUGH sink");
1572 /* In case of volume sharing, the volume is set for the root source first,
1573 * from which it's then propagated to the sharing sources. */
1574 root_source = pa_source_get_master(s);
1576 if (PA_UNLIKELY(!root_source))
1579 /* As a special exception we accept mono volumes on all sources --
1580 * even on those with more complex channel maps */
1583 if (pa_cvolume_compatible(volume, &s->sample_spec))
1584 new_reference_volume = *volume;
1586 new_reference_volume = s->reference_volume;
1587 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1590 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1592 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1593 if (pa_source_flat_volume_enabled(root_source)) {
1594 /* OK, propagate this volume change back to the outputs */
1595 propagate_reference_volume(root_source);
1597 /* And now recalculate the real volume */
1598 compute_real_volume(root_source);
1600 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1604 /* If volume is NULL we synchronize the source's real and
1605 * reference volumes with the stream volumes. */
1607 pa_assert(pa_source_flat_volume_enabled(root_source));
1609 /* Ok, let's determine the new real volume */
1610 compute_real_volume(root_source);
1612 /* Let's 'push' the reference volume if necessary */
1613 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_source->real_volume);
1614 /* If the source and it's root don't have the same number of channels, we need to remap */
1615 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1616 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1617 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1619 /* Now that the reference volume is updated, we can update the streams'
1620 * reference ratios. */
1621 compute_reference_ratios(root_source);
1624 if (root_source->set_volume) {
1625 /* If we have a function set_volume(), then we do not apply a
1626 * soft volume by default. However, set_volume() is free to
1627 * apply one to root_source->soft_volume */
1629 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1630 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1631 root_source->set_volume(root_source);
1634 /* If we have no function set_volume(), then the soft volume
1635 * becomes the real volume */
1636 root_source->soft_volume = root_source->real_volume;
1638 /* This tells the source that soft volume and/or real volume changed */
1640 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1643 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1644 * Only to be called by source implementor */
1645 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1647 pa_source_assert_ref(s);
1648 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1650 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1651 pa_source_assert_io_context(s);
1653 pa_assert_ctl_context();
1656 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1658 s->soft_volume = *volume;
1660 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1661 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1663 s->thread_info.soft_volume = s->soft_volume;
1666 /* Called from the main thread. Only called for the root source in volume sharing
1667 * cases, except for internal recursive calls. */
1668 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1669 pa_source_output *o;
1672 pa_source_assert_ref(s);
1673 pa_assert(old_real_volume);
1674 pa_assert_ctl_context();
1675 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1677 /* This is called when the hardware's real volume changes due to
1678 * some external event. We copy the real volume into our
1679 * reference volume and then rebuild the stream volumes based on
1680 * i->real_ratio which should stay fixed. */
1682 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1683 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1686 /* 1. Make the real volume the reference volume */
1687 update_reference_volume(s, &s->real_volume, &s->channel_map, true);
1690 if (pa_source_flat_volume_enabled(s)) {
1692 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1693 pa_cvolume old_volume = o->volume;
1695 /* 2. Since the source's reference and real volumes are equal
1696 * now our ratios should be too. */
1697 o->reference_ratio = o->real_ratio;
1699 /* 3. Recalculate the new stream reference volume based on the
1700 * reference ratio and the sink's reference volume.
1702 * This basically calculates:
1704 * o->volume = s->reference_volume * o->reference_ratio
1706 * This is identical to propagate_reference_volume() */
1707 o->volume = s->reference_volume;
1708 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1709 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1711 /* Notify if something changed */
1712 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1714 if (o->volume_changed)
1715 o->volume_changed(o);
1717 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1720 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1721 propagate_real_volume(o->destination_source, old_real_volume);
1725 /* Something got changed in the hardware. It probably makes sense
1726 * to save changed hw settings given that hw volume changes not
1727 * triggered by PA are almost certainly done by the user. */
1728 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1729 s->save_volume = true;
1732 /* Called from io thread */
1733 void pa_source_update_volume_and_mute(pa_source *s) {
1735 pa_source_assert_io_context(s);
1737 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1740 /* Called from main thread */
1741 const pa_cvolume *pa_source_get_volume(pa_source *s, bool force_refresh) {
1742 pa_source_assert_ref(s);
1743 pa_assert_ctl_context();
1744 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1746 if (s->refresh_volume || force_refresh) {
1747 struct pa_cvolume old_real_volume;
1749 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1751 old_real_volume = s->real_volume;
1753 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1756 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1758 update_real_volume(s, &s->real_volume, &s->channel_map);
1759 propagate_real_volume(s, &old_real_volume);
1762 return &s->reference_volume;
1765 /* Called from main thread. In volume sharing cases, only the root source may
1767 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1768 pa_cvolume old_real_volume;
1770 pa_source_assert_ref(s);
1771 pa_assert_ctl_context();
1772 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1773 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1775 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1777 old_real_volume = s->real_volume;
1778 update_real_volume(s, new_real_volume, &s->channel_map);
1779 propagate_real_volume(s, &old_real_volume);
1782 /* Called from main thread */
1783 void pa_source_set_mute(pa_source *s, bool mute, bool save) {
1786 pa_source_assert_ref(s);
1787 pa_assert_ctl_context();
1788 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1790 old_muted = s->muted;
1792 s->save_muted = (old_muted == s->muted && s->save_muted) || save;
1794 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute)
1797 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1799 if (old_muted != s->muted)
1800 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1803 /* Called from main thread */
1804 bool pa_source_get_mute(pa_source *s, bool force_refresh) {
1806 pa_source_assert_ref(s);
1807 pa_assert_ctl_context();
1808 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1810 if (s->refresh_muted || force_refresh) {
1811 bool old_muted = s->muted;
1813 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_mute)
1816 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, NULL, 0, NULL) == 0);
1818 if (old_muted != s->muted) {
1819 s->save_muted = true;
1821 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1823 /* Make sure the soft mute status stays in sync */
1824 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1831 /* Called from main thread */
1832 void pa_source_mute_changed(pa_source *s, bool new_muted) {
1833 pa_source_assert_ref(s);
1834 pa_assert_ctl_context();
1835 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1837 /* The source implementor may call this if the mute state changed to make sure everyone is notified */
1839 if (s->muted == new_muted)
1842 s->muted = new_muted;
1843 s->save_muted = true;
1845 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1848 /* Called from main thread */
1849 bool pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1850 pa_source_assert_ref(s);
1851 pa_assert_ctl_context();
1854 pa_proplist_update(s->proplist, mode, p);
1856 if (PA_SOURCE_IS_LINKED(s->state)) {
1857 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1858 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1864 /* Called from main thread */
1865 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1866 void pa_source_set_description(pa_source *s, const char *description) {
1868 pa_source_assert_ref(s);
1869 pa_assert_ctl_context();
1871 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1874 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1876 if (old && description && pa_streq(old, description))
1880 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1882 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1884 if (PA_SOURCE_IS_LINKED(s->state)) {
1885 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1886 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1890 /* Called from main thread */
1891 unsigned pa_source_linked_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 return pa_idxset_size(s->outputs);
1899 /* Called from main thread */
1900 unsigned pa_source_used_by(pa_source *s) {
1903 pa_source_assert_ref(s);
1904 pa_assert_ctl_context();
1905 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1907 ret = pa_idxset_size(s->outputs);
1908 pa_assert(ret >= s->n_corked);
1910 return ret - s->n_corked;
1913 /* Called from main thread */
1914 unsigned pa_source_check_suspend(pa_source *s) {
1916 pa_source_output *o;
1919 pa_source_assert_ref(s);
1920 pa_assert_ctl_context();
1922 if (!PA_SOURCE_IS_LINKED(s->state))
1927 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1928 pa_source_output_state_t st;
1930 st = pa_source_output_get_state(o);
1932 /* We do not assert here. It is perfectly valid for a source output to
1933 * be in the INIT state (i.e. created, marked done but not yet put)
1934 * and we should not care if it's unlinked as it won't contribute
1935 * towards our busy status.
1937 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1940 if (st == PA_SOURCE_OUTPUT_CORKED)
1943 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
1952 /* Called from the IO thread */
1953 static void sync_output_volumes_within_thread(pa_source *s) {
1954 pa_source_output *o;
1957 pa_source_assert_ref(s);
1958 pa_source_assert_io_context(s);
1960 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1961 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
1964 o->thread_info.soft_volume = o->soft_volume;
1965 //pa_source_output_request_rewind(o, 0, true, false, false);
1969 /* Called from the IO thread. Only called for the root source in volume sharing
1970 * cases, except for internal recursive calls. */
1971 static void set_shared_volume_within_thread(pa_source *s) {
1972 pa_source_output *o;
1975 pa_source_assert_ref(s);
1977 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
1979 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1980 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1981 set_shared_volume_within_thread(o->destination_source);
1985 /* Called from IO thread, except when it is not */
1986 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1987 pa_source *s = PA_SOURCE(object);
1988 pa_source_assert_ref(s);
1990 switch ((pa_source_message_t) code) {
1992 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
1993 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
1995 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
1997 if (o->direct_on_input) {
1998 o->thread_info.direct_on_input = o->direct_on_input;
1999 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
2002 pa_assert(!o->thread_info.attached);
2003 o->thread_info.attached = true;
2008 pa_source_output_set_state_within_thread(o, o->state);
2010 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
2011 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2013 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2015 /* We don't just invalidate the requested latency here,
2016 * because if we are in a move we might need to fix up the
2017 * requested latency. */
2018 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2020 /* In flat volume mode we need to update the volume as
2022 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2025 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
2026 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2028 pa_source_output_set_state_within_thread(o, o->state);
2033 pa_assert(o->thread_info.attached);
2034 o->thread_info.attached = false;
2036 if (o->thread_info.direct_on_input) {
2037 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
2038 o->thread_info.direct_on_input = NULL;
2041 if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
2042 pa_source_output_unref(o);
2044 pa_source_invalidate_requested_latency(s, true);
2046 /* In flat volume mode we need to update the volume as
2048 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2051 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
2052 pa_source *root_source = pa_source_get_master(s);
2054 if (PA_LIKELY(root_source))
2055 set_shared_volume_within_thread(root_source);
2060 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
2062 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2064 pa_source_volume_change_push(s);
2066 /* Fall through ... */
2068 case PA_SOURCE_MESSAGE_SET_VOLUME:
2070 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2071 s->thread_info.soft_volume = s->soft_volume;
2074 /* Fall through ... */
2076 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
2077 sync_output_volumes_within_thread(s);
2080 case PA_SOURCE_MESSAGE_GET_VOLUME:
2082 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
2084 pa_source_volume_change_flush(s);
2085 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2088 /* In case source implementor reset SW volume. */
2089 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2090 s->thread_info.soft_volume = s->soft_volume;
2095 case PA_SOURCE_MESSAGE_SET_MUTE:
2097 if (s->thread_info.soft_muted != s->muted) {
2098 s->thread_info.soft_muted = s->muted;
2101 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2106 case PA_SOURCE_MESSAGE_GET_MUTE:
2108 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2113 case PA_SOURCE_MESSAGE_SET_STATE: {
2115 bool suspend_change =
2116 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2117 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
2119 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2121 if (suspend_change) {
2122 pa_source_output *o;
2125 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2126 if (o->suspend_within_thread)
2127 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2133 case PA_SOURCE_MESSAGE_DETACH:
2135 /* Detach all streams */
2136 pa_source_detach_within_thread(s);
2139 case PA_SOURCE_MESSAGE_ATTACH:
2141 /* Reattach all streams */
2142 pa_source_attach_within_thread(s);
2145 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2147 pa_usec_t *usec = userdata;
2148 *usec = pa_source_get_requested_latency_within_thread(s);
2150 /* Yes, that's right, the IO thread will see -1 when no
2151 * explicit requested latency is configured, the main
2152 * thread will see max_latency */
2153 if (*usec == (pa_usec_t) -1)
2154 *usec = s->thread_info.max_latency;
2159 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2160 pa_usec_t *r = userdata;
2162 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2167 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2168 pa_usec_t *r = userdata;
2170 r[0] = s->thread_info.min_latency;
2171 r[1] = s->thread_info.max_latency;
2176 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2178 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2181 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2183 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2186 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2188 *((size_t*) userdata) = s->thread_info.max_rewind;
2191 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2193 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2196 case PA_SOURCE_MESSAGE_GET_LATENCY:
2198 if (s->monitor_of) {
2199 *((pa_usec_t*) userdata) = 0;
2203 /* Implementors need to overwrite this implementation! */
2206 case PA_SOURCE_MESSAGE_SET_PORT:
2208 pa_assert(userdata);
2210 struct source_message_set_port *msg_data = userdata;
2211 msg_data->ret = s->set_port(s, msg_data->port);
2215 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2216 /* This message is sent from IO-thread and handled in main thread. */
2217 pa_assert_ctl_context();
2219 /* Make sure we're not messing with main thread when no longer linked */
2220 if (!PA_SOURCE_IS_LINKED(s->state))
2223 pa_source_get_volume(s, true);
2224 pa_source_get_mute(s, true);
2227 case PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET:
2228 s->thread_info.latency_offset = offset;
2231 case PA_SOURCE_MESSAGE_MAX:
2238 /* Called from main thread */
2239 int pa_source_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
2244 pa_core_assert_ref(c);
2245 pa_assert_ctl_context();
2246 pa_assert(cause != 0);
2248 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2251 if (source->monitor_of)
2254 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2261 /* Called from main thread */
2262 void pa_source_detach(pa_source *s) {
2263 pa_source_assert_ref(s);
2264 pa_assert_ctl_context();
2265 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2267 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL) == 0);
2270 /* Called from main thread */
2271 void pa_source_attach(pa_source *s) {
2272 pa_source_assert_ref(s);
2273 pa_assert_ctl_context();
2274 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2276 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
2279 /* Called from IO thread */
2280 void pa_source_detach_within_thread(pa_source *s) {
2281 pa_source_output *o;
2284 pa_source_assert_ref(s);
2285 pa_source_assert_io_context(s);
2286 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2288 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2293 /* Called from IO thread */
2294 void pa_source_attach_within_thread(pa_source *s) {
2295 pa_source_output *o;
2298 pa_source_assert_ref(s);
2299 pa_source_assert_io_context(s);
2300 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2302 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2307 /* Called from IO thread */
2308 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2309 pa_usec_t result = (pa_usec_t) -1;
2310 pa_source_output *o;
2313 pa_source_assert_ref(s);
2314 pa_source_assert_io_context(s);
2316 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2317 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2319 if (s->thread_info.requested_latency_valid)
2320 return s->thread_info.requested_latency;
2322 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2323 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2324 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2325 result = o->thread_info.requested_source_latency;
2327 if (result != (pa_usec_t) -1)
2328 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2330 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2331 /* Only cache this if we are fully set up */
2332 s->thread_info.requested_latency = result;
2333 s->thread_info.requested_latency_valid = true;
2339 /* Called from main thread */
2340 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2343 pa_source_assert_ref(s);
2344 pa_assert_ctl_context();
2345 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2347 if (s->state == PA_SOURCE_SUSPENDED)
2350 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2355 /* Called from IO thread */
2356 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2357 pa_source_output *o;
2360 pa_source_assert_ref(s);
2361 pa_source_assert_io_context(s);
2363 if (max_rewind == s->thread_info.max_rewind)
2366 s->thread_info.max_rewind = max_rewind;
2368 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2369 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2370 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2373 /* Called from main thread */
2374 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2375 pa_source_assert_ref(s);
2376 pa_assert_ctl_context();
2378 if (PA_SOURCE_IS_LINKED(s->state))
2379 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2381 pa_source_set_max_rewind_within_thread(s, max_rewind);
2384 /* Called from IO thread */
2385 void pa_source_invalidate_requested_latency(pa_source *s, bool dynamic) {
2386 pa_source_output *o;
2389 pa_source_assert_ref(s);
2390 pa_source_assert_io_context(s);
2392 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2393 s->thread_info.requested_latency_valid = false;
2397 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2399 if (s->update_requested_latency)
2400 s->update_requested_latency(s);
2402 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2403 if (o->update_source_requested_latency)
2404 o->update_source_requested_latency(o);
2408 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2411 /* Called from main thread */
2412 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2413 pa_source_assert_ref(s);
2414 pa_assert_ctl_context();
2416 /* min_latency == 0: no limit
2417 * min_latency anything else: specified limit
2419 * Similar for max_latency */
2421 if (min_latency < ABSOLUTE_MIN_LATENCY)
2422 min_latency = ABSOLUTE_MIN_LATENCY;
2424 if (max_latency <= 0 ||
2425 max_latency > ABSOLUTE_MAX_LATENCY)
2426 max_latency = ABSOLUTE_MAX_LATENCY;
2428 pa_assert(min_latency <= max_latency);
2430 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2431 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2432 max_latency == ABSOLUTE_MAX_LATENCY) ||
2433 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2435 if (PA_SOURCE_IS_LINKED(s->state)) {
2441 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2443 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2446 /* Called from main thread */
2447 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2448 pa_source_assert_ref(s);
2449 pa_assert_ctl_context();
2450 pa_assert(min_latency);
2451 pa_assert(max_latency);
2453 if (PA_SOURCE_IS_LINKED(s->state)) {
2454 pa_usec_t r[2] = { 0, 0 };
2456 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2458 *min_latency = r[0];
2459 *max_latency = r[1];
2461 *min_latency = s->thread_info.min_latency;
2462 *max_latency = s->thread_info.max_latency;
2466 /* Called from IO thread, and from main thread before pa_source_put() is called */
2467 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2468 pa_source_assert_ref(s);
2469 pa_source_assert_io_context(s);
2471 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2472 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2473 pa_assert(min_latency <= max_latency);
2475 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2476 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2477 max_latency == ABSOLUTE_MAX_LATENCY) ||
2478 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2481 if (s->thread_info.min_latency == min_latency &&
2482 s->thread_info.max_latency == max_latency)
2485 s->thread_info.min_latency = min_latency;
2486 s->thread_info.max_latency = max_latency;
2488 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2489 pa_source_output *o;
2492 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2493 if (o->update_source_latency_range)
2494 o->update_source_latency_range(o);
2497 pa_source_invalidate_requested_latency(s, false);
2500 /* Called from main thread, before the source is put */
2501 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2502 pa_source_assert_ref(s);
2503 pa_assert_ctl_context();
2505 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2506 pa_assert(latency == 0);
2510 if (latency < ABSOLUTE_MIN_LATENCY)
2511 latency = ABSOLUTE_MIN_LATENCY;
2513 if (latency > ABSOLUTE_MAX_LATENCY)
2514 latency = ABSOLUTE_MAX_LATENCY;
2516 if (PA_SOURCE_IS_LINKED(s->state))
2517 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2519 s->thread_info.fixed_latency = latency;
2522 /* Called from main thread */
2523 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2526 pa_source_assert_ref(s);
2527 pa_assert_ctl_context();
2529 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2532 if (PA_SOURCE_IS_LINKED(s->state))
2533 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2535 latency = s->thread_info.fixed_latency;
2540 /* Called from IO thread */
2541 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2542 pa_source_assert_ref(s);
2543 pa_source_assert_io_context(s);
2545 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2546 pa_assert(latency == 0);
2547 s->thread_info.fixed_latency = 0;
2552 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2553 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2555 if (s->thread_info.fixed_latency == latency)
2558 s->thread_info.fixed_latency = latency;
2560 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2561 pa_source_output *o;
2564 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2565 if (o->update_source_fixed_latency)
2566 o->update_source_fixed_latency(o);
2569 pa_source_invalidate_requested_latency(s, false);
2572 /* Called from main thread */
2573 void pa_source_set_latency_offset(pa_source *s, int64_t offset) {
2574 pa_source_assert_ref(s);
2576 s->latency_offset = offset;
2578 if (PA_SOURCE_IS_LINKED(s->state))
2579 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET, NULL, offset, NULL) == 0);
2581 s->thread_info.latency_offset = offset;
2584 /* Called from main thread */
2585 size_t pa_source_get_max_rewind(pa_source *s) {
2587 pa_assert_ctl_context();
2588 pa_source_assert_ref(s);
2590 if (!PA_SOURCE_IS_LINKED(s->state))
2591 return s->thread_info.max_rewind;
2593 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2598 /* Called from main context */
2599 int pa_source_set_port(pa_source *s, const char *name, bool save) {
2600 pa_device_port *port;
2603 pa_source_assert_ref(s);
2604 pa_assert_ctl_context();
2607 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2608 return -PA_ERR_NOTIMPLEMENTED;
2612 return -PA_ERR_NOENTITY;
2614 if (!(port = pa_hashmap_get(s->ports, name)))
2615 return -PA_ERR_NOENTITY;
2617 if (s->active_port == port) {
2618 s->save_port = s->save_port || save;
2622 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2623 struct source_message_set_port msg = { .port = port, .ret = 0 };
2624 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2628 ret = s->set_port(s, port);
2631 return -PA_ERR_NOENTITY;
2633 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2635 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2637 s->active_port = port;
2638 s->save_port = save;
2640 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2645 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2647 /* Called from the IO thread. */
2648 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2649 pa_source_volume_change *c;
2650 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2651 c = pa_xnew(pa_source_volume_change, 1);
2653 PA_LLIST_INIT(pa_source_volume_change, c);
2655 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2659 /* Called from the IO thread. */
2660 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2662 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2666 /* Called from the IO thread. */
2667 void pa_source_volume_change_push(pa_source *s) {
2668 pa_source_volume_change *c = NULL;
2669 pa_source_volume_change *nc = NULL;
2670 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2672 const char *direction = NULL;
2675 nc = pa_source_volume_change_new(s);
2677 /* NOTE: There is already more different volumes in pa_source that I can remember.
2678 * Adding one more volume for HW would get us rid of this, but I am trying
2679 * to survive with the ones we already have. */
2680 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2682 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2683 pa_log_debug("Volume not changing");
2684 pa_source_volume_change_free(nc);
2688 nc->at = pa_source_get_latency_within_thread(s);
2689 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2691 if (s->thread_info.volume_changes_tail) {
2692 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2693 /* If volume is going up let's do it a bit late. If it is going
2694 * down let's do it a bit early. */
2695 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2696 if (nc->at + safety_margin > c->at) {
2697 nc->at += safety_margin;
2702 else if (nc->at - safety_margin > c->at) {
2703 nc->at -= safety_margin;
2711 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2712 nc->at += safety_margin;
2715 nc->at -= safety_margin;
2718 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2721 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2724 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2726 /* We can ignore volume events that came earlier but should happen later than this. */
2727 PA_LLIST_FOREACH(c, nc->next) {
2728 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2729 pa_source_volume_change_free(c);
2732 s->thread_info.volume_changes_tail = nc;
2735 /* Called from the IO thread. */
2736 static void pa_source_volume_change_flush(pa_source *s) {
2737 pa_source_volume_change *c = s->thread_info.volume_changes;
2739 s->thread_info.volume_changes = NULL;
2740 s->thread_info.volume_changes_tail = NULL;
2742 pa_source_volume_change *next = c->next;
2743 pa_source_volume_change_free(c);
2748 /* Called from the IO thread. */
2749 bool pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2755 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2761 pa_assert(s->write_volume);
2763 now = pa_rtclock_now();
2765 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2766 pa_source_volume_change *c = s->thread_info.volume_changes;
2767 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2768 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2769 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2771 s->thread_info.current_hw_volume = c->hw_volume;
2772 pa_source_volume_change_free(c);
2778 if (s->thread_info.volume_changes) {
2780 *usec_to_next = s->thread_info.volume_changes->at - now;
2781 if (pa_log_ratelimit(PA_LOG_DEBUG))
2782 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2787 s->thread_info.volume_changes_tail = NULL;
2792 /* Called from the main thread */
2793 /* Gets the list of formats supported by the source. The members and idxset must
2794 * be freed by the caller. */
2795 pa_idxset* pa_source_get_formats(pa_source *s) {
2800 if (s->get_formats) {
2801 /* Source supports format query, all is good */
2802 ret = s->get_formats(s);
2804 /* Source doesn't support format query, so assume it does PCM */
2805 pa_format_info *f = pa_format_info_new();
2806 f->encoding = PA_ENCODING_PCM;
2808 ret = pa_idxset_new(NULL, NULL);
2809 pa_idxset_put(ret, f, NULL);
2815 /* Called from the main thread */
2816 /* Checks if the source can accept this format */
2817 bool pa_source_check_format(pa_source *s, pa_format_info *f) {
2818 pa_idxset *formats = NULL;
2824 formats = pa_source_get_formats(s);
2827 pa_format_info *finfo_device;
2830 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2831 if (pa_format_info_is_compatible(finfo_device, f)) {
2837 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
2843 /* Called from the main thread */
2844 /* Calculates the intersection between formats supported by the source and
2845 * in_formats, and returns these, in the order of the source's formats. */
2846 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2847 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2848 pa_format_info *f_source, *f_in;
2853 if (!in_formats || pa_idxset_isempty(in_formats))
2856 source_formats = pa_source_get_formats(s);
2858 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2859 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2860 if (pa_format_info_is_compatible(f_source, f_in))
2861 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2867 pa_idxset_free(source_formats, (pa_free_cb_t) pa_format_info_free);