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;
979 if (rate == s->sample_spec.rate)
985 if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough)) {
986 pa_log_debug("Default and alternate sample rates are the same.");
990 if (PA_SOURCE_IS_RUNNING(s->state)) {
991 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u Hz",
992 s->sample_spec.rate);
996 if (PA_UNLIKELY (desired_rate < 8000 ||
997 desired_rate > PA_RATE_MAX))
1001 pa_assert((default_rate % 4000 == 0) || (default_rate % 11025 == 0));
1002 pa_assert((alternate_rate % 4000 == 0) || (alternate_rate % 11025 == 0));
1004 if (default_rate % 11025 == 0) {
1005 if ((alternate_rate % 4000 == 0) && (desired_rate % 4000 == 0))
1008 /* default is 4000 multiple */
1009 if ((alternate_rate % 11025 == 0) && (desired_rate % 11025 == 0))
1014 desired_rate = alternate_rate;
1016 desired_rate = default_rate;
1018 desired_rate = rate; /* use stream sampling rate, discard default/alternate settings */
1021 if (desired_rate == s->sample_spec.rate)
1024 if (!passthrough && pa_source_used_by(s) > 0)
1027 pa_log_debug("Suspending source %s due to changing the sample rate.", s->name);
1028 pa_source_suspend(s, true, PA_SUSPEND_INTERNAL);
1030 if (s->update_rate(s, desired_rate) == true) {
1031 pa_log_info("Changed sampling rate successfully ");
1033 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1034 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1035 pa_source_output_update_rate(o);
1040 pa_source_suspend(s, false, PA_SUSPEND_INTERNAL);
1045 /* Called from main thread */
1046 pa_usec_t pa_source_get_latency(pa_source *s) {
1049 pa_source_assert_ref(s);
1050 pa_assert_ctl_context();
1051 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1053 if (s->state == PA_SOURCE_SUSPENDED)
1056 if (!(s->flags & PA_SOURCE_LATENCY))
1059 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1061 /* usec is unsigned, so check that the offset can be added to usec without
1063 if (-s->latency_offset <= (int64_t) usec)
1064 usec += s->latency_offset;
1071 /* Called from IO thread */
1072 pa_usec_t pa_source_get_latency_within_thread(pa_source *s) {
1076 pa_source_assert_ref(s);
1077 pa_source_assert_io_context(s);
1078 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1080 /* The returned value is supposed to be in the time domain of the sound card! */
1082 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1085 if (!(s->flags & PA_SOURCE_LATENCY))
1088 o = PA_MSGOBJECT(s);
1090 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1092 if (o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1095 /* usec is unsigned, so check that the offset can be added to usec without
1097 if (-s->thread_info.latency_offset <= (int64_t) usec)
1098 usec += s->thread_info.latency_offset;
1105 /* Called from the main thread (and also from the IO thread while the main
1106 * thread is waiting).
1108 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1109 * set. Instead, flat volume mode is detected by checking whether the root source
1110 * has the flag set. */
1111 bool pa_source_flat_volume_enabled(pa_source *s) {
1112 pa_source_assert_ref(s);
1114 s = pa_source_get_master(s);
1117 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1122 /* Called from the main thread (and also from the IO thread while the main
1123 * thread is waiting). */
1124 pa_source *pa_source_get_master(pa_source *s) {
1125 pa_source_assert_ref(s);
1127 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1128 if (PA_UNLIKELY(!s->output_from_master))
1131 s = s->output_from_master->source;
1137 /* Called from main context */
1138 bool pa_source_is_passthrough(pa_source *s) {
1140 pa_source_assert_ref(s);
1142 /* NB Currently only monitor sources support passthrough mode */
1143 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1146 /* Called from main context */
1147 void pa_source_enter_passthrough(pa_source *s) {
1150 /* set the volume to NORM */
1151 s->saved_volume = *pa_source_get_volume(s, true);
1152 s->saved_save_volume = s->save_volume;
1154 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1155 pa_source_set_volume(s, &volume, true, false);
1158 /* Called from main context */
1159 void pa_source_leave_passthrough(pa_source *s) {
1160 /* Restore source volume to what it was before we entered passthrough mode */
1161 pa_source_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
1163 pa_cvolume_init(&s->saved_volume);
1164 s->saved_save_volume = false;
1167 /* Called from main context. */
1168 static void compute_reference_ratio(pa_source_output *o) {
1170 pa_cvolume remapped;
1173 pa_assert(pa_source_flat_volume_enabled(o->source));
1176 * Calculates the reference ratio from the source's reference
1177 * volume. This basically calculates:
1179 * o->reference_ratio = o->volume / o->source->reference_volume
1182 remapped = o->source->reference_volume;
1183 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1185 o->reference_ratio.channels = o->sample_spec.channels;
1187 for (c = 0; c < o->sample_spec.channels; c++) {
1189 /* We don't update when the source volume is 0 anyway */
1190 if (remapped.values[c] <= PA_VOLUME_MUTED)
1193 /* Don't update the reference ratio unless necessary */
1194 if (pa_sw_volume_multiply(
1195 o->reference_ratio.values[c],
1196 remapped.values[c]) == o->volume.values[c])
1199 o->reference_ratio.values[c] = pa_sw_volume_divide(
1200 o->volume.values[c],
1201 remapped.values[c]);
1205 /* Called from main context. Only called for the root source in volume sharing
1206 * cases, except for internal recursive calls. */
1207 static void compute_reference_ratios(pa_source *s) {
1209 pa_source_output *o;
1211 pa_source_assert_ref(s);
1212 pa_assert_ctl_context();
1213 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1214 pa_assert(pa_source_flat_volume_enabled(s));
1216 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1217 compute_reference_ratio(o);
1219 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1220 compute_reference_ratios(o->destination_source);
1224 /* Called from main context. Only called for the root source in volume sharing
1225 * cases, except for internal recursive calls. */
1226 static void compute_real_ratios(pa_source *s) {
1227 pa_source_output *o;
1230 pa_source_assert_ref(s);
1231 pa_assert_ctl_context();
1232 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1233 pa_assert(pa_source_flat_volume_enabled(s));
1235 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1237 pa_cvolume remapped;
1239 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1240 /* The origin source uses volume sharing, so this input's real ratio
1241 * is handled as a special case - the real ratio must be 0 dB, and
1242 * as a result i->soft_volume must equal i->volume_factor. */
1243 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1244 o->soft_volume = o->volume_factor;
1246 compute_real_ratios(o->destination_source);
1252 * This basically calculates:
1254 * i->real_ratio := i->volume / s->real_volume
1255 * i->soft_volume := i->real_ratio * i->volume_factor
1258 remapped = s->real_volume;
1259 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1261 o->real_ratio.channels = o->sample_spec.channels;
1262 o->soft_volume.channels = o->sample_spec.channels;
1264 for (c = 0; c < o->sample_spec.channels; c++) {
1266 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1267 /* We leave o->real_ratio untouched */
1268 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1272 /* Don't lose accuracy unless necessary */
1273 if (pa_sw_volume_multiply(
1274 o->real_ratio.values[c],
1275 remapped.values[c]) != o->volume.values[c])
1277 o->real_ratio.values[c] = pa_sw_volume_divide(
1278 o->volume.values[c],
1279 remapped.values[c]);
1281 o->soft_volume.values[c] = pa_sw_volume_multiply(
1282 o->real_ratio.values[c],
1283 o->volume_factor.values[c]);
1286 /* We don't copy the soft_volume to the thread_info data
1287 * here. That must be done by the caller */
1291 static pa_cvolume *cvolume_remap_minimal_impact(
1293 const pa_cvolume *template,
1294 const pa_channel_map *from,
1295 const pa_channel_map *to) {
1300 pa_assert(template);
1303 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1304 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1306 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1307 * mapping from source output to source volumes:
1309 * If template is a possible remapping from v it is used instead
1310 * of remapping anew.
1312 * If the channel maps don't match we set an all-channel volume on
1313 * the source to ensure that changing a volume on one stream has no
1314 * effect that cannot be compensated for in another stream that
1315 * does not have the same channel map as the source. */
1317 if (pa_channel_map_equal(from, to))
1321 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1326 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1330 /* Called from main thread. Only called for the root source in volume sharing
1331 * cases, except for internal recursive calls. */
1332 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1333 pa_source_output *o;
1336 pa_source_assert_ref(s);
1337 pa_assert(max_volume);
1338 pa_assert(channel_map);
1339 pa_assert(pa_source_flat_volume_enabled(s));
1341 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1342 pa_cvolume remapped;
1344 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1345 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1347 /* Ignore this output. The origin source uses volume sharing, so this
1348 * output's volume will be set to be equal to the root source's real
1349 * volume. Obviously this output's current volume must not then
1350 * affect what the root source's real volume will be. */
1354 remapped = o->volume;
1355 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1356 pa_cvolume_merge(max_volume, max_volume, &remapped);
1360 /* Called from main thread. Only called for the root source in volume sharing
1361 * cases, except for internal recursive calls. */
1362 static bool has_outputs(pa_source *s) {
1363 pa_source_output *o;
1366 pa_source_assert_ref(s);
1368 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1369 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1376 /* Called from main thread. Only called for the root source in volume sharing
1377 * cases, except for internal recursive calls. */
1378 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1379 pa_source_output *o;
1382 pa_source_assert_ref(s);
1383 pa_assert(new_volume);
1384 pa_assert(channel_map);
1386 s->real_volume = *new_volume;
1387 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1389 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1390 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1391 if (pa_source_flat_volume_enabled(s)) {
1392 pa_cvolume old_volume = o->volume;
1394 /* Follow the root source's real volume. */
1395 o->volume = *new_volume;
1396 pa_cvolume_remap(&o->volume, channel_map, &o->channel_map);
1397 compute_reference_ratio(o);
1399 /* The volume changed, let's tell people so */
1400 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1401 if (o->volume_changed)
1402 o->volume_changed(o);
1404 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1408 update_real_volume(o->destination_source, new_volume, channel_map);
1413 /* Called from main thread. Only called for the root source in shared volume
1415 static void compute_real_volume(pa_source *s) {
1416 pa_source_assert_ref(s);
1417 pa_assert_ctl_context();
1418 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1419 pa_assert(pa_source_flat_volume_enabled(s));
1420 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1422 /* This determines the maximum volume of all streams and sets
1423 * s->real_volume accordingly. */
1425 if (!has_outputs(s)) {
1426 /* In the special case that we have no source outputs we leave the
1427 * volume unmodified. */
1428 update_real_volume(s, &s->reference_volume, &s->channel_map);
1432 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1434 /* First let's determine the new maximum volume of all outputs
1435 * connected to this source */
1436 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1437 update_real_volume(s, &s->real_volume, &s->channel_map);
1439 /* Then, let's update the real ratios/soft volumes of all outputs
1440 * connected to this source */
1441 compute_real_ratios(s);
1444 /* Called from main thread. Only called for the root source in shared volume
1445 * cases, except for internal recursive calls. */
1446 static void propagate_reference_volume(pa_source *s) {
1447 pa_source_output *o;
1450 pa_source_assert_ref(s);
1451 pa_assert_ctl_context();
1452 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1453 pa_assert(pa_source_flat_volume_enabled(s));
1455 /* This is called whenever the source volume changes that is not
1456 * caused by a source output volume change. We need to fix up the
1457 * source output volumes accordingly */
1459 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1460 pa_cvolume old_volume;
1462 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1463 propagate_reference_volume(o->destination_source);
1465 /* Since the origin source uses volume sharing, this output's volume
1466 * needs to be updated to match the root source's real volume, but
1467 * that will be done later in update_shared_real_volume(). */
1471 old_volume = o->volume;
1473 /* This basically calculates:
1475 * o->volume := o->reference_volume * o->reference_ratio */
1477 o->volume = s->reference_volume;
1478 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1479 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1481 /* The volume changed, let's tell people so */
1482 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1484 if (o->volume_changed)
1485 o->volume_changed(o);
1487 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1492 /* Called from main thread. Only called for the root source in volume sharing
1493 * cases, except for internal recursive calls. The return value indicates
1494 * whether any reference volume actually changed. */
1495 static bool update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
1497 bool reference_volume_changed;
1498 pa_source_output *o;
1501 pa_source_assert_ref(s);
1502 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1504 pa_assert(channel_map);
1505 pa_assert(pa_cvolume_valid(v));
1508 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1510 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1511 s->reference_volume = volume;
1513 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1515 if (reference_volume_changed)
1516 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1517 else if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1518 /* If the root source's volume doesn't change, then there can't be any
1519 * changes in the other source in the source tree either.
1521 * It's probably theoretically possible that even if the root source's
1522 * volume changes slightly, some filter source doesn't change its volume
1523 * due to rounding errors. If that happens, we still want to propagate
1524 * the changed root source volume to the sources connected to the
1525 * intermediate source that didn't change its volume. This theoretical
1526 * possibility is the reason why we have that !(s->flags &
1527 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1528 * notice even if we returned here false always if
1529 * reference_volume_changed is false. */
1532 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1533 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1534 update_reference_volume(o->destination_source, v, channel_map, false);
1540 /* Called from main thread */
1541 void pa_source_set_volume(
1543 const pa_cvolume *volume,
1547 pa_cvolume new_reference_volume;
1548 pa_source *root_source;
1550 pa_source_assert_ref(s);
1551 pa_assert_ctl_context();
1552 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1553 pa_assert(!volume || pa_cvolume_valid(volume));
1554 pa_assert(volume || pa_source_flat_volume_enabled(s));
1555 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1557 /* make sure we don't change the volume in PASSTHROUGH mode ...
1558 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1559 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1560 pa_log_warn("Cannot change volume, source is monitor of a PASSTHROUGH sink");
1564 /* In case of volume sharing, the volume is set for the root source first,
1565 * from which it's then propagated to the sharing sources. */
1566 root_source = pa_source_get_master(s);
1568 if (PA_UNLIKELY(!root_source))
1571 /* As a special exception we accept mono volumes on all sources --
1572 * even on those with more complex channel maps */
1575 if (pa_cvolume_compatible(volume, &s->sample_spec))
1576 new_reference_volume = *volume;
1578 new_reference_volume = s->reference_volume;
1579 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1582 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1584 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1585 if (pa_source_flat_volume_enabled(root_source)) {
1586 /* OK, propagate this volume change back to the outputs */
1587 propagate_reference_volume(root_source);
1589 /* And now recalculate the real volume */
1590 compute_real_volume(root_source);
1592 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1596 /* If volume is NULL we synchronize the source's real and
1597 * reference volumes with the stream volumes. */
1599 pa_assert(pa_source_flat_volume_enabled(root_source));
1601 /* Ok, let's determine the new real volume */
1602 compute_real_volume(root_source);
1604 /* Let's 'push' the reference volume if necessary */
1605 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_source->real_volume);
1606 /* If the source and it's root don't have the same number of channels, we need to remap */
1607 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1608 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1609 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1611 /* Now that the reference volume is updated, we can update the streams'
1612 * reference ratios. */
1613 compute_reference_ratios(root_source);
1616 if (root_source->set_volume) {
1617 /* If we have a function set_volume(), then we do not apply a
1618 * soft volume by default. However, set_volume() is free to
1619 * apply one to root_source->soft_volume */
1621 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1622 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1623 root_source->set_volume(root_source);
1626 /* If we have no function set_volume(), then the soft volume
1627 * becomes the real volume */
1628 root_source->soft_volume = root_source->real_volume;
1630 /* This tells the source that soft volume and/or real volume changed */
1632 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1635 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1636 * Only to be called by source implementor */
1637 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1639 pa_source_assert_ref(s);
1640 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1642 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1643 pa_source_assert_io_context(s);
1645 pa_assert_ctl_context();
1648 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1650 s->soft_volume = *volume;
1652 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1653 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1655 s->thread_info.soft_volume = s->soft_volume;
1658 /* Called from the main thread. Only called for the root source in volume sharing
1659 * cases, except for internal recursive calls. */
1660 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1661 pa_source_output *o;
1664 pa_source_assert_ref(s);
1665 pa_assert(old_real_volume);
1666 pa_assert_ctl_context();
1667 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1669 /* This is called when the hardware's real volume changes due to
1670 * some external event. We copy the real volume into our
1671 * reference volume and then rebuild the stream volumes based on
1672 * i->real_ratio which should stay fixed. */
1674 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1675 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1678 /* 1. Make the real volume the reference volume */
1679 update_reference_volume(s, &s->real_volume, &s->channel_map, true);
1682 if (pa_source_flat_volume_enabled(s)) {
1684 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1685 pa_cvolume old_volume = o->volume;
1687 /* 2. Since the source's reference and real volumes are equal
1688 * now our ratios should be too. */
1689 o->reference_ratio = o->real_ratio;
1691 /* 3. Recalculate the new stream reference volume based on the
1692 * reference ratio and the sink's reference volume.
1694 * This basically calculates:
1696 * o->volume = s->reference_volume * o->reference_ratio
1698 * This is identical to propagate_reference_volume() */
1699 o->volume = s->reference_volume;
1700 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1701 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1703 /* Notify if something changed */
1704 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1706 if (o->volume_changed)
1707 o->volume_changed(o);
1709 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1712 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1713 propagate_real_volume(o->destination_source, old_real_volume);
1717 /* Something got changed in the hardware. It probably makes sense
1718 * to save changed hw settings given that hw volume changes not
1719 * triggered by PA are almost certainly done by the user. */
1720 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1721 s->save_volume = true;
1724 /* Called from io thread */
1725 void pa_source_update_volume_and_mute(pa_source *s) {
1727 pa_source_assert_io_context(s);
1729 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1732 /* Called from main thread */
1733 const pa_cvolume *pa_source_get_volume(pa_source *s, bool force_refresh) {
1734 pa_source_assert_ref(s);
1735 pa_assert_ctl_context();
1736 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1738 if (s->refresh_volume || force_refresh) {
1739 struct pa_cvolume old_real_volume;
1741 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1743 old_real_volume = s->real_volume;
1745 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1748 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1750 update_real_volume(s, &s->real_volume, &s->channel_map);
1751 propagate_real_volume(s, &old_real_volume);
1754 return &s->reference_volume;
1757 /* Called from main thread. In volume sharing cases, only the root source may
1759 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1760 pa_cvolume old_real_volume;
1762 pa_source_assert_ref(s);
1763 pa_assert_ctl_context();
1764 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1765 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1767 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1769 old_real_volume = s->real_volume;
1770 update_real_volume(s, new_real_volume, &s->channel_map);
1771 propagate_real_volume(s, &old_real_volume);
1774 /* Called from main thread */
1775 void pa_source_set_mute(pa_source *s, bool mute, bool save) {
1778 pa_source_assert_ref(s);
1779 pa_assert_ctl_context();
1780 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1782 old_muted = s->muted;
1784 s->save_muted = (old_muted == s->muted && s->save_muted) || save;
1786 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute)
1789 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1791 if (old_muted != s->muted)
1792 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1795 /* Called from main thread */
1796 bool pa_source_get_mute(pa_source *s, bool force_refresh) {
1798 pa_source_assert_ref(s);
1799 pa_assert_ctl_context();
1800 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1802 if (s->refresh_muted || force_refresh) {
1803 bool old_muted = s->muted;
1805 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_mute)
1808 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, NULL, 0, NULL) == 0);
1810 if (old_muted != s->muted) {
1811 s->save_muted = true;
1813 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1815 /* Make sure the soft mute status stays in sync */
1816 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1823 /* Called from main thread */
1824 void pa_source_mute_changed(pa_source *s, bool new_muted) {
1825 pa_source_assert_ref(s);
1826 pa_assert_ctl_context();
1827 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1829 /* The source implementor may call this if the mute state changed to make sure everyone is notified */
1831 if (s->muted == new_muted)
1834 s->muted = new_muted;
1835 s->save_muted = true;
1837 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1840 /* Called from main thread */
1841 bool pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1842 pa_source_assert_ref(s);
1843 pa_assert_ctl_context();
1846 pa_proplist_update(s->proplist, mode, p);
1848 if (PA_SOURCE_IS_LINKED(s->state)) {
1849 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1850 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1856 /* Called from main thread */
1857 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1858 void pa_source_set_description(pa_source *s, const char *description) {
1860 pa_source_assert_ref(s);
1861 pa_assert_ctl_context();
1863 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1866 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1868 if (old && description && pa_streq(old, description))
1872 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1874 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1876 if (PA_SOURCE_IS_LINKED(s->state)) {
1877 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1878 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1882 /* Called from main thread */
1883 unsigned pa_source_linked_by(pa_source *s) {
1884 pa_source_assert_ref(s);
1885 pa_assert_ctl_context();
1886 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1888 return pa_idxset_size(s->outputs);
1891 /* Called from main thread */
1892 unsigned pa_source_used_by(pa_source *s) {
1895 pa_source_assert_ref(s);
1896 pa_assert_ctl_context();
1897 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1899 ret = pa_idxset_size(s->outputs);
1900 pa_assert(ret >= s->n_corked);
1902 return ret - s->n_corked;
1905 /* Called from main thread */
1906 unsigned pa_source_check_suspend(pa_source *s) {
1908 pa_source_output *o;
1911 pa_source_assert_ref(s);
1912 pa_assert_ctl_context();
1914 if (!PA_SOURCE_IS_LINKED(s->state))
1919 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1920 pa_source_output_state_t st;
1922 st = pa_source_output_get_state(o);
1924 /* We do not assert here. It is perfectly valid for a source output to
1925 * be in the INIT state (i.e. created, marked done but not yet put)
1926 * and we should not care if it's unlinked as it won't contribute
1927 * towards our busy status.
1929 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1932 if (st == PA_SOURCE_OUTPUT_CORKED)
1935 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
1944 /* Called from the IO thread */
1945 static void sync_output_volumes_within_thread(pa_source *s) {
1946 pa_source_output *o;
1949 pa_source_assert_ref(s);
1950 pa_source_assert_io_context(s);
1952 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1953 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
1956 o->thread_info.soft_volume = o->soft_volume;
1957 //pa_source_output_request_rewind(o, 0, true, false, false);
1961 /* Called from the IO thread. Only called for the root source in volume sharing
1962 * cases, except for internal recursive calls. */
1963 static void set_shared_volume_within_thread(pa_source *s) {
1964 pa_source_output *o;
1967 pa_source_assert_ref(s);
1969 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
1971 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1972 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1973 set_shared_volume_within_thread(o->destination_source);
1977 /* Called from IO thread, except when it is not */
1978 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1979 pa_source *s = PA_SOURCE(object);
1980 pa_source_assert_ref(s);
1982 switch ((pa_source_message_t) code) {
1984 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
1985 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
1987 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
1989 if (o->direct_on_input) {
1990 o->thread_info.direct_on_input = o->direct_on_input;
1991 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
1994 pa_assert(!o->thread_info.attached);
1995 o->thread_info.attached = true;
2000 pa_source_output_set_state_within_thread(o, o->state);
2002 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
2003 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2005 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2007 /* We don't just invalidate the requested latency here,
2008 * because if we are in a move we might need to fix up the
2009 * requested latency. */
2010 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
2012 /* In flat volume mode we need to update the volume as
2014 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2017 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
2018 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
2020 pa_source_output_set_state_within_thread(o, o->state);
2025 pa_assert(o->thread_info.attached);
2026 o->thread_info.attached = false;
2028 if (o->thread_info.direct_on_input) {
2029 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
2030 o->thread_info.direct_on_input = NULL;
2033 if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
2034 pa_source_output_unref(o);
2036 pa_source_invalidate_requested_latency(s, true);
2038 /* In flat volume mode we need to update the volume as
2040 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2043 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
2044 pa_source *root_source = pa_source_get_master(s);
2046 if (PA_LIKELY(root_source))
2047 set_shared_volume_within_thread(root_source);
2052 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
2054 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2056 pa_source_volume_change_push(s);
2058 /* Fall through ... */
2060 case PA_SOURCE_MESSAGE_SET_VOLUME:
2062 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2063 s->thread_info.soft_volume = s->soft_volume;
2066 /* Fall through ... */
2068 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
2069 sync_output_volumes_within_thread(s);
2072 case PA_SOURCE_MESSAGE_GET_VOLUME:
2074 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
2076 pa_source_volume_change_flush(s);
2077 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2080 /* In case source implementor reset SW volume. */
2081 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2082 s->thread_info.soft_volume = s->soft_volume;
2087 case PA_SOURCE_MESSAGE_SET_MUTE:
2089 if (s->thread_info.soft_muted != s->muted) {
2090 s->thread_info.soft_muted = s->muted;
2093 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2098 case PA_SOURCE_MESSAGE_GET_MUTE:
2100 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2105 case PA_SOURCE_MESSAGE_SET_STATE: {
2107 bool suspend_change =
2108 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2109 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
2111 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2113 if (suspend_change) {
2114 pa_source_output *o;
2117 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2118 if (o->suspend_within_thread)
2119 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2125 case PA_SOURCE_MESSAGE_DETACH:
2127 /* Detach all streams */
2128 pa_source_detach_within_thread(s);
2131 case PA_SOURCE_MESSAGE_ATTACH:
2133 /* Reattach all streams */
2134 pa_source_attach_within_thread(s);
2137 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2139 pa_usec_t *usec = userdata;
2140 *usec = pa_source_get_requested_latency_within_thread(s);
2142 /* Yes, that's right, the IO thread will see -1 when no
2143 * explicit requested latency is configured, the main
2144 * thread will see max_latency */
2145 if (*usec == (pa_usec_t) -1)
2146 *usec = s->thread_info.max_latency;
2151 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2152 pa_usec_t *r = userdata;
2154 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2159 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2160 pa_usec_t *r = userdata;
2162 r[0] = s->thread_info.min_latency;
2163 r[1] = s->thread_info.max_latency;
2168 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2170 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2173 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2175 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2178 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2180 *((size_t*) userdata) = s->thread_info.max_rewind;
2183 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2185 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2188 case PA_SOURCE_MESSAGE_GET_LATENCY:
2190 if (s->monitor_of) {
2191 *((pa_usec_t*) userdata) = 0;
2195 /* Implementors need to overwrite this implementation! */
2198 case PA_SOURCE_MESSAGE_SET_PORT:
2200 pa_assert(userdata);
2202 struct source_message_set_port *msg_data = userdata;
2203 msg_data->ret = s->set_port(s, msg_data->port);
2207 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2208 /* This message is sent from IO-thread and handled in main thread. */
2209 pa_assert_ctl_context();
2211 /* Make sure we're not messing with main thread when no longer linked */
2212 if (!PA_SOURCE_IS_LINKED(s->state))
2215 pa_source_get_volume(s, true);
2216 pa_source_get_mute(s, true);
2219 case PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET:
2220 s->thread_info.latency_offset = offset;
2223 case PA_SOURCE_MESSAGE_MAX:
2230 /* Called from main thread */
2231 int pa_source_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
2236 pa_core_assert_ref(c);
2237 pa_assert_ctl_context();
2238 pa_assert(cause != 0);
2240 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2243 if (source->monitor_of)
2246 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2253 /* Called from main thread */
2254 void pa_source_detach(pa_source *s) {
2255 pa_source_assert_ref(s);
2256 pa_assert_ctl_context();
2257 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2259 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL) == 0);
2262 /* Called from main thread */
2263 void pa_source_attach(pa_source *s) {
2264 pa_source_assert_ref(s);
2265 pa_assert_ctl_context();
2266 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2268 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
2271 /* Called from IO thread */
2272 void pa_source_detach_within_thread(pa_source *s) {
2273 pa_source_output *o;
2276 pa_source_assert_ref(s);
2277 pa_source_assert_io_context(s);
2278 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2280 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2285 /* Called from IO thread */
2286 void pa_source_attach_within_thread(pa_source *s) {
2287 pa_source_output *o;
2290 pa_source_assert_ref(s);
2291 pa_source_assert_io_context(s);
2292 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2294 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2299 /* Called from IO thread */
2300 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2301 pa_usec_t result = (pa_usec_t) -1;
2302 pa_source_output *o;
2305 pa_source_assert_ref(s);
2306 pa_source_assert_io_context(s);
2308 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2309 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2311 if (s->thread_info.requested_latency_valid)
2312 return s->thread_info.requested_latency;
2314 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2315 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2316 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2317 result = o->thread_info.requested_source_latency;
2319 if (result != (pa_usec_t) -1)
2320 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2322 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2323 /* Only cache this if we are fully set up */
2324 s->thread_info.requested_latency = result;
2325 s->thread_info.requested_latency_valid = true;
2331 /* Called from main thread */
2332 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2335 pa_source_assert_ref(s);
2336 pa_assert_ctl_context();
2337 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2339 if (s->state == PA_SOURCE_SUSPENDED)
2342 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2347 /* Called from IO thread */
2348 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2349 pa_source_output *o;
2352 pa_source_assert_ref(s);
2353 pa_source_assert_io_context(s);
2355 if (max_rewind == s->thread_info.max_rewind)
2358 s->thread_info.max_rewind = max_rewind;
2360 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2361 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2362 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2365 /* Called from main thread */
2366 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2367 pa_source_assert_ref(s);
2368 pa_assert_ctl_context();
2370 if (PA_SOURCE_IS_LINKED(s->state))
2371 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2373 pa_source_set_max_rewind_within_thread(s, max_rewind);
2376 /* Called from IO thread */
2377 void pa_source_invalidate_requested_latency(pa_source *s, bool dynamic) {
2378 pa_source_output *o;
2381 pa_source_assert_ref(s);
2382 pa_source_assert_io_context(s);
2384 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2385 s->thread_info.requested_latency_valid = false;
2389 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2391 if (s->update_requested_latency)
2392 s->update_requested_latency(s);
2394 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2395 if (o->update_source_requested_latency)
2396 o->update_source_requested_latency(o);
2400 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2403 /* Called from main thread */
2404 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2405 pa_source_assert_ref(s);
2406 pa_assert_ctl_context();
2408 /* min_latency == 0: no limit
2409 * min_latency anything else: specified limit
2411 * Similar for max_latency */
2413 if (min_latency < ABSOLUTE_MIN_LATENCY)
2414 min_latency = ABSOLUTE_MIN_LATENCY;
2416 if (max_latency <= 0 ||
2417 max_latency > ABSOLUTE_MAX_LATENCY)
2418 max_latency = ABSOLUTE_MAX_LATENCY;
2420 pa_assert(min_latency <= max_latency);
2422 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2423 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2424 max_latency == ABSOLUTE_MAX_LATENCY) ||
2425 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2427 if (PA_SOURCE_IS_LINKED(s->state)) {
2433 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2435 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2438 /* Called from main thread */
2439 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2440 pa_source_assert_ref(s);
2441 pa_assert_ctl_context();
2442 pa_assert(min_latency);
2443 pa_assert(max_latency);
2445 if (PA_SOURCE_IS_LINKED(s->state)) {
2446 pa_usec_t r[2] = { 0, 0 };
2448 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2450 *min_latency = r[0];
2451 *max_latency = r[1];
2453 *min_latency = s->thread_info.min_latency;
2454 *max_latency = s->thread_info.max_latency;
2458 /* Called from IO thread, and from main thread before pa_source_put() is called */
2459 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2460 pa_source_assert_ref(s);
2461 pa_source_assert_io_context(s);
2463 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2464 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2465 pa_assert(min_latency <= max_latency);
2467 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2468 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2469 max_latency == ABSOLUTE_MAX_LATENCY) ||
2470 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2473 if (s->thread_info.min_latency == min_latency &&
2474 s->thread_info.max_latency == max_latency)
2477 s->thread_info.min_latency = min_latency;
2478 s->thread_info.max_latency = max_latency;
2480 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2481 pa_source_output *o;
2484 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2485 if (o->update_source_latency_range)
2486 o->update_source_latency_range(o);
2489 pa_source_invalidate_requested_latency(s, false);
2492 /* Called from main thread, before the source is put */
2493 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2494 pa_source_assert_ref(s);
2495 pa_assert_ctl_context();
2497 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2498 pa_assert(latency == 0);
2502 if (latency < ABSOLUTE_MIN_LATENCY)
2503 latency = ABSOLUTE_MIN_LATENCY;
2505 if (latency > ABSOLUTE_MAX_LATENCY)
2506 latency = ABSOLUTE_MAX_LATENCY;
2508 if (PA_SOURCE_IS_LINKED(s->state))
2509 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2511 s->thread_info.fixed_latency = latency;
2514 /* Called from main thread */
2515 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2518 pa_source_assert_ref(s);
2519 pa_assert_ctl_context();
2521 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2524 if (PA_SOURCE_IS_LINKED(s->state))
2525 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2527 latency = s->thread_info.fixed_latency;
2532 /* Called from IO thread */
2533 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2534 pa_source_assert_ref(s);
2535 pa_source_assert_io_context(s);
2537 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2538 pa_assert(latency == 0);
2539 s->thread_info.fixed_latency = 0;
2544 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2545 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2547 if (s->thread_info.fixed_latency == latency)
2550 s->thread_info.fixed_latency = latency;
2552 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2553 pa_source_output *o;
2556 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2557 if (o->update_source_fixed_latency)
2558 o->update_source_fixed_latency(o);
2561 pa_source_invalidate_requested_latency(s, false);
2564 /* Called from main thread */
2565 void pa_source_set_latency_offset(pa_source *s, int64_t offset) {
2566 pa_source_assert_ref(s);
2568 s->latency_offset = offset;
2570 if (PA_SOURCE_IS_LINKED(s->state))
2571 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET, NULL, offset, NULL) == 0);
2573 s->thread_info.latency_offset = offset;
2576 /* Called from main thread */
2577 size_t pa_source_get_max_rewind(pa_source *s) {
2579 pa_assert_ctl_context();
2580 pa_source_assert_ref(s);
2582 if (!PA_SOURCE_IS_LINKED(s->state))
2583 return s->thread_info.max_rewind;
2585 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2590 /* Called from main context */
2591 int pa_source_set_port(pa_source *s, const char *name, bool save) {
2592 pa_device_port *port;
2595 pa_source_assert_ref(s);
2596 pa_assert_ctl_context();
2599 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2600 return -PA_ERR_NOTIMPLEMENTED;
2604 return -PA_ERR_NOENTITY;
2606 if (!(port = pa_hashmap_get(s->ports, name)))
2607 return -PA_ERR_NOENTITY;
2609 if (s->active_port == port) {
2610 s->save_port = s->save_port || save;
2614 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2615 struct source_message_set_port msg = { .port = port, .ret = 0 };
2616 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2620 ret = s->set_port(s, port);
2623 return -PA_ERR_NOENTITY;
2625 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2627 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2629 s->active_port = port;
2630 s->save_port = save;
2632 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2637 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2639 /* Called from the IO thread. */
2640 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2641 pa_source_volume_change *c;
2642 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2643 c = pa_xnew(pa_source_volume_change, 1);
2645 PA_LLIST_INIT(pa_source_volume_change, c);
2647 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2651 /* Called from the IO thread. */
2652 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2654 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2658 /* Called from the IO thread. */
2659 void pa_source_volume_change_push(pa_source *s) {
2660 pa_source_volume_change *c = NULL;
2661 pa_source_volume_change *nc = NULL;
2662 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2664 const char *direction = NULL;
2667 nc = pa_source_volume_change_new(s);
2669 /* NOTE: There is already more different volumes in pa_source that I can remember.
2670 * Adding one more volume for HW would get us rid of this, but I am trying
2671 * to survive with the ones we already have. */
2672 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2674 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2675 pa_log_debug("Volume not changing");
2676 pa_source_volume_change_free(nc);
2680 nc->at = pa_source_get_latency_within_thread(s);
2681 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2683 if (s->thread_info.volume_changes_tail) {
2684 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2685 /* If volume is going up let's do it a bit late. If it is going
2686 * down let's do it a bit early. */
2687 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2688 if (nc->at + safety_margin > c->at) {
2689 nc->at += safety_margin;
2694 else if (nc->at - safety_margin > c->at) {
2695 nc->at -= safety_margin;
2703 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2704 nc->at += safety_margin;
2707 nc->at -= safety_margin;
2710 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2713 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2716 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2718 /* We can ignore volume events that came earlier but should happen later than this. */
2719 PA_LLIST_FOREACH(c, nc->next) {
2720 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2721 pa_source_volume_change_free(c);
2724 s->thread_info.volume_changes_tail = nc;
2727 /* Called from the IO thread. */
2728 static void pa_source_volume_change_flush(pa_source *s) {
2729 pa_source_volume_change *c = s->thread_info.volume_changes;
2731 s->thread_info.volume_changes = NULL;
2732 s->thread_info.volume_changes_tail = NULL;
2734 pa_source_volume_change *next = c->next;
2735 pa_source_volume_change_free(c);
2740 /* Called from the IO thread. */
2741 bool pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2747 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2753 pa_assert(s->write_volume);
2755 now = pa_rtclock_now();
2757 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2758 pa_source_volume_change *c = s->thread_info.volume_changes;
2759 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2760 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2761 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2763 s->thread_info.current_hw_volume = c->hw_volume;
2764 pa_source_volume_change_free(c);
2770 if (s->thread_info.volume_changes) {
2772 *usec_to_next = s->thread_info.volume_changes->at - now;
2773 if (pa_log_ratelimit(PA_LOG_DEBUG))
2774 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2779 s->thread_info.volume_changes_tail = NULL;
2784 /* Called from the main thread */
2785 /* Gets the list of formats supported by the source. The members and idxset must
2786 * be freed by the caller. */
2787 pa_idxset* pa_source_get_formats(pa_source *s) {
2792 if (s->get_formats) {
2793 /* Source supports format query, all is good */
2794 ret = s->get_formats(s);
2796 /* Source doesn't support format query, so assume it does PCM */
2797 pa_format_info *f = pa_format_info_new();
2798 f->encoding = PA_ENCODING_PCM;
2800 ret = pa_idxset_new(NULL, NULL);
2801 pa_idxset_put(ret, f, NULL);
2807 /* Called from the main thread */
2808 /* Checks if the source can accept this format */
2809 bool pa_source_check_format(pa_source *s, pa_format_info *f) {
2810 pa_idxset *formats = NULL;
2816 formats = pa_source_get_formats(s);
2819 pa_format_info *finfo_device;
2822 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2823 if (pa_format_info_is_compatible(finfo_device, f)) {
2829 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
2835 /* Called from the main thread */
2836 /* Calculates the intersection between formats supported by the source and
2837 * in_formats, and returns these, in the order of the source's formats. */
2838 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2839 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2840 pa_format_info *f_source, *f_in;
2845 if (!in_formats || pa_idxset_isempty(in_formats))
2848 source_formats = pa_source_get_formats(s);
2850 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2851 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2852 if (pa_format_info_is_compatible(f_source, f_in))
2853 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2859 pa_idxset_free(source_formats, (pa_free_cb_t) pa_format_info_free);