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/sample-util.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();
80 void pa_source_new_data_set_name(pa_source_new_data *data, const char *name) {
84 data->name = pa_xstrdup(name);
87 void pa_source_new_data_set_sample_spec(pa_source_new_data *data, const pa_sample_spec *spec) {
90 if ((data->sample_spec_is_set = !!spec))
91 data->sample_spec = *spec;
94 void pa_source_new_data_set_channel_map(pa_source_new_data *data, const pa_channel_map *map) {
97 if ((data->channel_map_is_set = !!map))
98 data->channel_map = *map;
101 void pa_source_new_data_set_alternate_sample_rate(pa_source_new_data *data, const uint32_t alternate_sample_rate) {
104 data->alternate_sample_rate_is_set = TRUE;
105 data->alternate_sample_rate = alternate_sample_rate;
108 void pa_source_new_data_set_volume(pa_source_new_data *data, const pa_cvolume *volume) {
111 if ((data->volume_is_set = !!volume))
112 data->volume = *volume;
115 void pa_source_new_data_set_muted(pa_source_new_data *data, pa_bool_t mute) {
118 data->muted_is_set = TRUE;
119 data->muted = !!mute;
122 void pa_source_new_data_set_port(pa_source_new_data *data, const char *port) {
125 pa_xfree(data->active_port);
126 data->active_port = pa_xstrdup(port);
129 void pa_source_new_data_done(pa_source_new_data *data) {
132 pa_proplist_free(data->proplist);
135 pa_device_port_hashmap_free(data->ports);
137 pa_xfree(data->name);
138 pa_xfree(data->active_port);
141 /* Called from main context */
142 static void reset_callbacks(pa_source *s) {
146 s->get_volume = NULL;
147 s->set_volume = NULL;
148 s->write_volume = NULL;
151 s->update_requested_latency = NULL;
153 s->get_formats = NULL;
154 s->update_rate = NULL;
157 /* Called from main context */
158 pa_source* pa_source_new(
160 pa_source_new_data *data,
161 pa_source_flags_t flags) {
165 char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
170 pa_assert(data->name);
171 pa_assert_ctl_context();
173 s = pa_msgobject_new(pa_source);
175 if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
176 pa_log_debug("Failed to register name %s.", data->name);
181 pa_source_new_data_set_name(data, name);
183 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
185 pa_namereg_unregister(core, name);
189 /* FIXME, need to free s here on failure */
191 pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
192 pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
194 pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
196 if (!data->channel_map_is_set)
197 pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
199 pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
200 pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
202 /* FIXME: There should probably be a general function for checking whether
203 * the source volume is allowed to be set, like there is for source outputs. */
204 pa_assert(!data->volume_is_set || !(flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
206 if (!data->volume_is_set) {
207 pa_cvolume_reset(&data->volume, data->sample_spec.channels);
208 data->save_volume = FALSE;
211 pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
212 pa_return_null_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec));
214 if (!data->muted_is_set)
218 pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
220 pa_device_init_description(data->proplist);
221 pa_device_init_icon(data->proplist, FALSE);
222 pa_device_init_intended_roles(data->proplist);
224 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
226 pa_namereg_unregister(core, name);
230 s->parent.parent.free = source_free;
231 s->parent.process_msg = pa_source_process_msg;
234 s->state = PA_SOURCE_INIT;
237 s->suspend_cause = 0;
238 pa_source_set_mixer_dirty(s, FALSE);
239 s->name = pa_xstrdup(name);
240 s->proplist = pa_proplist_copy(data->proplist);
241 s->driver = pa_xstrdup(pa_path_get_filename(data->driver));
242 s->module = data->module;
243 s->card = data->card;
245 s->priority = pa_device_init_priority(s->proplist);
247 s->sample_spec = data->sample_spec;
248 s->channel_map = data->channel_map;
249 s->default_sample_rate = s->sample_spec.rate;
251 if (data->alternate_sample_rate_is_set)
252 s->alternate_sample_rate = data->alternate_sample_rate;
254 s->alternate_sample_rate = s->core->alternate_sample_rate;
256 if (s->sample_spec.rate == s->alternate_sample_rate) {
257 pa_log_warn("Default and alternate sample rates are the same.");
258 s->alternate_sample_rate = 0;
261 s->outputs = pa_idxset_new(NULL, NULL);
263 s->monitor_of = NULL;
264 s->output_from_master = NULL;
266 s->reference_volume = s->real_volume = data->volume;
267 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
268 s->base_volume = PA_VOLUME_NORM;
269 s->n_volume_steps = PA_VOLUME_NORM+1;
270 s->muted = data->muted;
271 s->refresh_volume = s->refresh_muted = FALSE;
278 /* As a minor optimization we just steal the list instead of
280 s->ports = data->ports;
283 s->active_port = NULL;
284 s->save_port = FALSE;
286 if (data->active_port && s->ports)
287 if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
288 s->save_port = data->save_port;
290 if (!s->active_port && s->ports) {
294 PA_HASHMAP_FOREACH(p, s->ports, state)
295 if (!s->active_port || p->priority > s->active_port->priority)
300 s->latency_offset = s->active_port->latency_offset;
302 s->latency_offset = 0;
304 s->save_volume = data->save_volume;
305 s->save_muted = data->save_muted;
307 pa_silence_memchunk_get(
308 &core->silence_cache,
314 s->thread_info.rtpoll = NULL;
315 s->thread_info.outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
316 s->thread_info.soft_volume = s->soft_volume;
317 s->thread_info.soft_muted = s->muted;
318 s->thread_info.state = s->state;
319 s->thread_info.max_rewind = 0;
320 s->thread_info.requested_latency_valid = FALSE;
321 s->thread_info.requested_latency = 0;
322 s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
323 s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
324 s->thread_info.fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
326 PA_LLIST_HEAD_INIT(pa_source_volume_change, s->thread_info.volume_changes);
327 s->thread_info.volume_changes_tail = NULL;
328 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
329 s->thread_info.volume_change_safety_margin = core->deferred_volume_safety_margin_usec;
330 s->thread_info.volume_change_extra_delay = core->deferred_volume_extra_delay_usec;
331 s->thread_info.latency_offset = s->latency_offset;
333 /* FIXME: This should probably be moved to pa_source_put() */
334 pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
337 pa_assert_se(pa_idxset_put(s->card->sources, s, NULL) >= 0);
339 pt = pa_proplist_to_string_sep(s->proplist, "\n ");
340 pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s\n %s",
343 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
344 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
351 /* Called from main context */
352 static int source_set_state(pa_source *s, pa_source_state_t state) {
354 pa_bool_t suspend_change;
355 pa_source_state_t original_state;
358 pa_assert_ctl_context();
360 if (s->state == state)
363 original_state = s->state;
366 (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
367 (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
370 if ((ret = s->set_state(s, state)) < 0)
374 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
377 s->set_state(s, original_state);
384 if (state != PA_SOURCE_UNLINKED) { /* if we enter UNLINKED state pa_source_unlink() will fire the appropriate events */
385 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
386 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
389 if (suspend_change) {
393 /* We're suspending or resuming, tell everyone about it */
395 PA_IDXSET_FOREACH(o, s->outputs, idx)
396 if (s->state == PA_SOURCE_SUSPENDED &&
397 (o->flags & PA_SOURCE_OUTPUT_KILL_ON_SUSPEND))
398 pa_source_output_kill(o);
400 o->suspend(o, state == PA_SOURCE_SUSPENDED);
406 void pa_source_set_get_volume_callback(pa_source *s, pa_source_cb_t cb) {
412 void pa_source_set_set_volume_callback(pa_source *s, pa_source_cb_t cb) {
413 pa_source_flags_t flags;
416 pa_assert(!s->write_volume || cb);
420 /* Save the current flags so we can tell if they've changed */
424 /* The source implementor is responsible for setting decibel volume support */
425 s->flags |= PA_SOURCE_HW_VOLUME_CTRL;
427 s->flags &= ~PA_SOURCE_HW_VOLUME_CTRL;
428 /* See note below in pa_source_put() about volume sharing and decibel volumes */
429 pa_source_enable_decibel_volume(s, !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
432 /* If the flags have changed after init, let any clients know via a change event */
433 if (s->state != PA_SOURCE_INIT && flags != s->flags)
434 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
437 void pa_source_set_write_volume_callback(pa_source *s, pa_source_cb_t cb) {
438 pa_source_flags_t flags;
441 pa_assert(!cb || s->set_volume);
443 s->write_volume = cb;
445 /* Save the current flags so we can tell if they've changed */
449 s->flags |= PA_SOURCE_DEFERRED_VOLUME;
451 s->flags &= ~PA_SOURCE_DEFERRED_VOLUME;
453 /* If the flags have changed after init, let any clients know via a change event */
454 if (s->state != PA_SOURCE_INIT && flags != s->flags)
455 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
458 void pa_source_set_get_mute_callback(pa_source *s, pa_source_cb_t cb) {
464 void pa_source_set_set_mute_callback(pa_source *s, pa_source_cb_t cb) {
465 pa_source_flags_t flags;
471 /* Save the current flags so we can tell if they've changed */
475 s->flags |= PA_SOURCE_HW_MUTE_CTRL;
477 s->flags &= ~PA_SOURCE_HW_MUTE_CTRL;
479 /* If the flags have changed after init, let any clients know via a change event */
480 if (s->state != PA_SOURCE_INIT && flags != s->flags)
481 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
484 static void enable_flat_volume(pa_source *s, pa_bool_t enable) {
485 pa_source_flags_t flags;
489 /* Always follow the overall user preference here */
490 enable = enable && s->core->flat_volumes;
492 /* Save the current flags so we can tell if they've changed */
496 s->flags |= PA_SOURCE_FLAT_VOLUME;
498 s->flags &= ~PA_SOURCE_FLAT_VOLUME;
500 /* If the flags have changed after init, let any clients know via a change event */
501 if (s->state != PA_SOURCE_INIT && flags != s->flags)
502 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
505 void pa_source_enable_decibel_volume(pa_source *s, pa_bool_t enable) {
506 pa_source_flags_t flags;
510 /* Save the current flags so we can tell if they've changed */
514 s->flags |= PA_SOURCE_DECIBEL_VOLUME;
515 enable_flat_volume(s, TRUE);
517 s->flags &= ~PA_SOURCE_DECIBEL_VOLUME;
518 enable_flat_volume(s, FALSE);
521 /* If the flags have changed after init, let any clients know via a change event */
522 if (s->state != PA_SOURCE_INIT && flags != s->flags)
523 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
526 /* Called from main context */
527 void pa_source_put(pa_source *s) {
528 pa_source_assert_ref(s);
529 pa_assert_ctl_context();
531 pa_assert(s->state == PA_SOURCE_INIT);
532 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || s->output_from_master);
534 /* The following fields must be initialized properly when calling _put() */
535 pa_assert(s->asyncmsgq);
536 pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
538 /* Generally, flags should be initialized via pa_source_new(). As a
539 * special exception we allow some volume related flags to be set
540 * between _new() and _put() by the callback setter functions above.
542 * Thus we implement a couple safeguards here which ensure the above
543 * setters were used (or at least the implementor made manual changes
544 * in a compatible way).
546 * Note: All of these flags set here can change over the life time
548 pa_assert(!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) || s->set_volume);
549 pa_assert(!(s->flags & PA_SOURCE_DEFERRED_VOLUME) || s->write_volume);
550 pa_assert(!(s->flags & PA_SOURCE_HW_MUTE_CTRL) || s->set_mute);
552 /* XXX: Currently decibel volume is disabled for all sources that use volume
553 * sharing. When the master source supports decibel volume, it would be good
554 * to have the flag also in the filter source, but currently we don't do that
555 * so that the flags of the filter source never change when it's moved from
556 * a master source to another. One solution for this problem would be to
557 * remove user-visible volume altogether from filter sources when volume
558 * sharing is used, but the current approach was easier to implement... */
559 /* We always support decibel volumes in software, otherwise we leave it to
560 * the source implementor to set this flag as needed.
562 * Note: This flag can also change over the life time of the source. */
563 if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
564 pa_source_enable_decibel_volume(s, TRUE);
566 /* If the source implementor support DB volumes by itself, we should always
567 * try and enable flat volumes too */
568 if ((s->flags & PA_SOURCE_DECIBEL_VOLUME))
569 enable_flat_volume(s, TRUE);
571 if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
572 pa_source *root_source = pa_source_get_master(s);
574 pa_assert(PA_LIKELY(root_source));
576 s->reference_volume = root_source->reference_volume;
577 pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
579 s->real_volume = root_source->real_volume;
580 pa_cvolume_remap(&s->real_volume, &root_source->channel_map, &s->channel_map);
582 /* We assume that if the sink implementor changed the default
583 * volume he did so in real_volume, because that is the usual
584 * place where he is supposed to place his changes. */
585 s->reference_volume = s->real_volume;
587 s->thread_info.soft_volume = s->soft_volume;
588 s->thread_info.soft_muted = s->muted;
589 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
591 pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL)
592 || (s->base_volume == PA_VOLUME_NORM
593 && ((s->flags & PA_SOURCE_DECIBEL_VOLUME || (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)))));
594 pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
595 pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == (s->thread_info.fixed_latency != 0));
597 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
599 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
600 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
603 /* Called from main context */
604 void pa_source_unlink(pa_source *s) {
606 pa_source_output *o, *j = NULL;
609 pa_assert_ctl_context();
611 /* See pa_sink_unlink() for a couple of comments how this function
614 linked = PA_SOURCE_IS_LINKED(s->state);
617 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
619 if (s->state != PA_SOURCE_UNLINKED)
620 pa_namereg_unregister(s->core, s->name);
621 pa_idxset_remove_by_data(s->core->sources, s, NULL);
624 pa_idxset_remove_by_data(s->card->sources, s, NULL);
626 while ((o = pa_idxset_first(s->outputs, NULL))) {
628 pa_source_output_kill(o);
633 source_set_state(s, PA_SOURCE_UNLINKED);
635 s->state = PA_SOURCE_UNLINKED;
640 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
641 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
645 /* Called from main context */
646 static void source_free(pa_object *o) {
647 pa_source_output *so;
648 pa_source *s = PA_SOURCE(o);
651 pa_assert_ctl_context();
652 pa_assert(pa_source_refcnt(s) == 0);
654 if (PA_SOURCE_IS_LINKED(s->state))
657 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
659 pa_idxset_free(s->outputs, NULL, NULL);
661 while ((so = pa_hashmap_steal_first(s->thread_info.outputs)))
662 pa_source_output_unref(so);
664 pa_hashmap_free(s->thread_info.outputs, NULL, NULL);
666 if (s->silence.memblock)
667 pa_memblock_unref(s->silence.memblock);
673 pa_proplist_free(s->proplist);
676 pa_device_port_hashmap_free(s->ports);
681 /* Called from main context, and not while the IO thread is active, please */
682 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
683 pa_source_assert_ref(s);
684 pa_assert_ctl_context();
689 /* Called from main context, and not while the IO thread is active, please */
690 void pa_source_update_flags(pa_source *s, pa_source_flags_t mask, pa_source_flags_t value) {
691 pa_source_assert_ref(s);
692 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 s->flags = (s->flags & ~mask) | (value & mask);
703 /* Called from IO context, or before _put() from main context */
704 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
705 pa_source_assert_ref(s);
706 pa_source_assert_io_context(s);
708 s->thread_info.rtpoll = p;
711 /* Called from main context */
712 int pa_source_update_status(pa_source*s) {
713 pa_source_assert_ref(s);
714 pa_assert_ctl_context();
715 pa_assert(PA_SOURCE_IS_LINKED(s->state));
717 if (s->state == PA_SOURCE_SUSPENDED)
720 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
723 /* Called from any context - must be threadsafe */
724 void pa_source_set_mixer_dirty(pa_source *s, pa_bool_t is_dirty)
726 pa_atomic_store(&s->mixer_dirty, is_dirty ? 1 : 0);
729 /* Called from main context */
730 int pa_source_suspend(pa_source *s, pa_bool_t suspend, pa_suspend_cause_t cause) {
731 pa_source_assert_ref(s);
732 pa_assert_ctl_context();
733 pa_assert(PA_SOURCE_IS_LINKED(s->state));
734 pa_assert(cause != 0);
736 if (s->monitor_of && cause != PA_SUSPEND_PASSTHROUGH)
737 return -PA_ERR_NOTSUPPORTED;
740 s->suspend_cause |= cause;
742 s->suspend_cause &= ~cause;
744 if (!(s->suspend_cause & PA_SUSPEND_SESSION) && (pa_atomic_load(&s->mixer_dirty) != 0)) {
745 /* This might look racy but isn't: If somebody sets mixer_dirty exactly here,
746 it'll be handled just fine. */
747 pa_source_set_mixer_dirty(s, FALSE);
748 pa_log_debug("Mixer is now accessible. Updating alsa mixer settings.");
749 if (s->active_port && s->set_port) {
750 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
751 struct source_message_set_port msg = { .port = s->active_port, .ret = 0 };
752 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
755 s->set_port(s, s->active_port);
765 if ((pa_source_get_state(s) == PA_SOURCE_SUSPENDED) == !!s->suspend_cause)
768 pa_log_debug("Suspend cause of source %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
770 if (s->suspend_cause)
771 return source_set_state(s, PA_SOURCE_SUSPENDED);
773 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
776 /* Called from main context */
777 int pa_source_sync_suspend(pa_source *s) {
778 pa_sink_state_t state;
780 pa_source_assert_ref(s);
781 pa_assert_ctl_context();
782 pa_assert(PA_SOURCE_IS_LINKED(s->state));
783 pa_assert(s->monitor_of);
785 state = pa_sink_get_state(s->monitor_of);
787 if (state == PA_SINK_SUSPENDED)
788 return source_set_state(s, PA_SOURCE_SUSPENDED);
790 pa_assert(PA_SINK_IS_OPENED(state));
792 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
795 /* Called from main context */
796 pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q) {
797 pa_source_output *o, *n;
800 pa_source_assert_ref(s);
801 pa_assert_ctl_context();
802 pa_assert(PA_SOURCE_IS_LINKED(s->state));
807 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = n) {
808 n = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx));
810 pa_source_output_ref(o);
812 if (pa_source_output_start_move(o) >= 0)
815 pa_source_output_unref(o);
821 /* Called from main context */
822 void pa_source_move_all_finish(pa_source *s, pa_queue *q, pa_bool_t save) {
825 pa_source_assert_ref(s);
826 pa_assert_ctl_context();
827 pa_assert(PA_SOURCE_IS_LINKED(s->state));
830 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
831 if (pa_source_output_finish_move(o, s, save) < 0)
832 pa_source_output_fail_move(o);
834 pa_source_output_unref(o);
837 pa_queue_free(q, NULL);
840 /* Called from main context */
841 void pa_source_move_all_fail(pa_queue *q) {
844 pa_assert_ctl_context();
847 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
848 pa_source_output_fail_move(o);
849 pa_source_output_unref(o);
852 pa_queue_free(q, NULL);
855 /* Called from IO thread context */
856 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
860 pa_source_assert_ref(s);
861 pa_source_assert_io_context(s);
862 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
867 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
870 pa_log_debug("Processing rewind...");
872 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
873 pa_source_output_assert_ref(o);
874 pa_source_output_process_rewind(o, nbytes);
878 /* Called from IO thread context */
879 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
883 pa_source_assert_ref(s);
884 pa_source_assert_io_context(s);
885 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
888 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
891 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
892 pa_memchunk vchunk = *chunk;
894 pa_memblock_ref(vchunk.memblock);
895 pa_memchunk_make_writable(&vchunk, 0);
897 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
898 pa_silence_memchunk(&vchunk, &s->sample_spec);
900 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
902 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
903 pa_source_output_assert_ref(o);
905 if (!o->thread_info.direct_on_input)
906 pa_source_output_push(o, &vchunk);
909 pa_memblock_unref(vchunk.memblock);
912 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
913 pa_source_output_assert_ref(o);
915 if (!o->thread_info.direct_on_input)
916 pa_source_output_push(o, chunk);
921 /* Called from IO thread context */
922 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
923 pa_source_assert_ref(s);
924 pa_source_assert_io_context(s);
925 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
926 pa_source_output_assert_ref(o);
927 pa_assert(o->thread_info.direct_on_input);
930 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
933 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
934 pa_memchunk vchunk = *chunk;
936 pa_memblock_ref(vchunk.memblock);
937 pa_memchunk_make_writable(&vchunk, 0);
939 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
940 pa_silence_memchunk(&vchunk, &s->sample_spec);
942 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
944 pa_source_output_push(o, &vchunk);
946 pa_memblock_unref(vchunk.memblock);
948 pa_source_output_push(o, chunk);
951 /* Called from main thread */
952 pa_bool_t pa_source_update_rate(pa_source *s, uint32_t rate, pa_bool_t passthrough)
954 if (s->update_rate) {
955 uint32_t desired_rate = rate;
956 uint32_t default_rate = s->default_sample_rate;
957 uint32_t alternate_rate = s->alternate_sample_rate;
960 pa_bool_t use_alternate = FALSE;
962 if (PA_UNLIKELY(default_rate == alternate_rate)) {
963 pa_log_warn("Default and alternate sample rates are the same.");
967 if (PA_SOURCE_IS_RUNNING(s->state)) {
968 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u Hz",
969 s->sample_spec.rate);
973 if (PA_UNLIKELY (desired_rate < 8000 ||
974 desired_rate > PA_RATE_MAX))
978 pa_assert(default_rate % 4000 || default_rate % 11025);
979 pa_assert(alternate_rate % 4000 || alternate_rate % 11025);
981 if (default_rate % 4000) {
982 /* default is a 11025 multiple */
983 if ((alternate_rate % 4000 == 0) && (desired_rate % 4000 == 0))
986 /* default is 4000 multiple */
987 if ((alternate_rate % 11025 == 0) && (desired_rate % 11025 == 0))
992 desired_rate = alternate_rate;
994 desired_rate = default_rate;
996 desired_rate = rate; /* use stream sampling rate, discard default/alternate settings */
999 if (!passthrough && pa_source_used_by(s) > 0)
1002 pa_source_suspend(s, TRUE, PA_SUSPEND_IDLE); /* needed before rate update, will be resumed automatically */
1004 if (s->update_rate(s, desired_rate) == TRUE) {
1005 pa_log_info("Changed sampling rate successfully ");
1007 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1008 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1009 pa_source_output_update_rate(o);
1017 /* Called from main thread */
1018 pa_usec_t pa_source_get_latency(pa_source *s) {
1021 pa_source_assert_ref(s);
1022 pa_assert_ctl_context();
1023 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1025 if (s->state == PA_SOURCE_SUSPENDED)
1028 if (!(s->flags & PA_SOURCE_LATENCY))
1031 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1033 usec += s->latency_offset;
1038 /* Called from IO thread */
1039 pa_usec_t pa_source_get_latency_within_thread(pa_source *s) {
1043 pa_source_assert_ref(s);
1044 pa_source_assert_io_context(s);
1045 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1047 /* The returned value is supposed to be in the time domain of the sound card! */
1049 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1052 if (!(s->flags & PA_SOURCE_LATENCY))
1055 o = PA_MSGOBJECT(s);
1057 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1059 if (o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1062 usec += s->thread_info.latency_offset;
1067 /* Called from the main thread (and also from the IO thread while the main
1068 * thread is waiting).
1070 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1071 * set. Instead, flat volume mode is detected by checking whether the root source
1072 * has the flag set. */
1073 pa_bool_t pa_source_flat_volume_enabled(pa_source *s) {
1074 pa_source_assert_ref(s);
1076 s = pa_source_get_master(s);
1079 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1084 /* Called from the main thread (and also from the IO thread while the main
1085 * thread is waiting). */
1086 pa_source *pa_source_get_master(pa_source *s) {
1087 pa_source_assert_ref(s);
1089 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1090 if (PA_UNLIKELY(!s->output_from_master))
1093 s = s->output_from_master->source;
1099 /* Called from main context */
1100 pa_bool_t pa_source_is_passthrough(pa_source *s) {
1102 pa_source_assert_ref(s);
1104 /* NB Currently only monitor sources support passthrough mode */
1105 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1108 /* Called from main context */
1109 void pa_source_enter_passthrough(pa_source *s) {
1112 /* set the volume to NORM */
1113 s->saved_volume = *pa_source_get_volume(s, TRUE);
1114 s->saved_save_volume = s->save_volume;
1116 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1117 pa_source_set_volume(s, &volume, TRUE, FALSE);
1120 /* Called from main context */
1121 void pa_source_leave_passthrough(pa_source *s) {
1122 /* Restore source volume to what it was before we entered passthrough mode */
1123 pa_source_set_volume(s, &s->saved_volume, TRUE, s->saved_save_volume);
1125 pa_cvolume_init(&s->saved_volume);
1126 s->saved_save_volume = FALSE;
1129 /* Called from main context. */
1130 static void compute_reference_ratio(pa_source_output *o) {
1132 pa_cvolume remapped;
1135 pa_assert(pa_source_flat_volume_enabled(o->source));
1138 * Calculates the reference ratio from the source's reference
1139 * volume. This basically calculates:
1141 * o->reference_ratio = o->volume / o->source->reference_volume
1144 remapped = o->source->reference_volume;
1145 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1147 o->reference_ratio.channels = o->sample_spec.channels;
1149 for (c = 0; c < o->sample_spec.channels; c++) {
1151 /* We don't update when the source volume is 0 anyway */
1152 if (remapped.values[c] <= PA_VOLUME_MUTED)
1155 /* Don't update the reference ratio unless necessary */
1156 if (pa_sw_volume_multiply(
1157 o->reference_ratio.values[c],
1158 remapped.values[c]) == o->volume.values[c])
1161 o->reference_ratio.values[c] = pa_sw_volume_divide(
1162 o->volume.values[c],
1163 remapped.values[c]);
1167 /* Called from main context. Only called for the root source in volume sharing
1168 * cases, except for internal recursive calls. */
1169 static void compute_reference_ratios(pa_source *s) {
1171 pa_source_output *o;
1173 pa_source_assert_ref(s);
1174 pa_assert_ctl_context();
1175 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1176 pa_assert(pa_source_flat_volume_enabled(s));
1178 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1179 compute_reference_ratio(o);
1181 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1182 compute_reference_ratios(o->destination_source);
1186 /* Called from main context. Only called for the root source in volume sharing
1187 * cases, except for internal recursive calls. */
1188 static void compute_real_ratios(pa_source *s) {
1189 pa_source_output *o;
1192 pa_source_assert_ref(s);
1193 pa_assert_ctl_context();
1194 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1195 pa_assert(pa_source_flat_volume_enabled(s));
1197 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1199 pa_cvolume remapped;
1201 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1202 /* The origin source uses volume sharing, so this input's real ratio
1203 * is handled as a special case - the real ratio must be 0 dB, and
1204 * as a result i->soft_volume must equal i->volume_factor. */
1205 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1206 o->soft_volume = o->volume_factor;
1208 compute_real_ratios(o->destination_source);
1214 * This basically calculates:
1216 * i->real_ratio := i->volume / s->real_volume
1217 * i->soft_volume := i->real_ratio * i->volume_factor
1220 remapped = s->real_volume;
1221 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1223 o->real_ratio.channels = o->sample_spec.channels;
1224 o->soft_volume.channels = o->sample_spec.channels;
1226 for (c = 0; c < o->sample_spec.channels; c++) {
1228 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1229 /* We leave o->real_ratio untouched */
1230 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1234 /* Don't lose accuracy unless necessary */
1235 if (pa_sw_volume_multiply(
1236 o->real_ratio.values[c],
1237 remapped.values[c]) != o->volume.values[c])
1239 o->real_ratio.values[c] = pa_sw_volume_divide(
1240 o->volume.values[c],
1241 remapped.values[c]);
1243 o->soft_volume.values[c] = pa_sw_volume_multiply(
1244 o->real_ratio.values[c],
1245 o->volume_factor.values[c]);
1248 /* We don't copy the soft_volume to the thread_info data
1249 * here. That must be done by the caller */
1253 static pa_cvolume *cvolume_remap_minimal_impact(
1255 const pa_cvolume *template,
1256 const pa_channel_map *from,
1257 const pa_channel_map *to) {
1262 pa_assert(template);
1265 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1266 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1268 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1269 * mapping from source output to source volumes:
1271 * If template is a possible remapping from v it is used instead
1272 * of remapping anew.
1274 * If the channel maps don't match we set an all-channel volume on
1275 * the source to ensure that changing a volume on one stream has no
1276 * effect that cannot be compensated for in another stream that
1277 * does not have the same channel map as the source. */
1279 if (pa_channel_map_equal(from, to))
1283 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1288 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1292 /* Called from main thread. Only called for the root source in volume sharing
1293 * cases, except for internal recursive calls. */
1294 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1295 pa_source_output *o;
1298 pa_source_assert_ref(s);
1299 pa_assert(max_volume);
1300 pa_assert(channel_map);
1301 pa_assert(pa_source_flat_volume_enabled(s));
1303 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1304 pa_cvolume remapped;
1306 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1307 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1309 /* Ignore this output. The origin source uses volume sharing, so this
1310 * output's volume will be set to be equal to the root source's real
1311 * volume. Obviously this output's current volume must not then
1312 * affect what the root source's real volume will be. */
1316 remapped = o->volume;
1317 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1318 pa_cvolume_merge(max_volume, max_volume, &remapped);
1322 /* Called from main thread. Only called for the root source in volume sharing
1323 * cases, except for internal recursive calls. */
1324 static pa_bool_t has_outputs(pa_source *s) {
1325 pa_source_output *o;
1328 pa_source_assert_ref(s);
1330 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1331 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1338 /* Called from main thread. Only called for the root source in volume sharing
1339 * cases, except for internal recursive calls. */
1340 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1341 pa_source_output *o;
1344 pa_source_assert_ref(s);
1345 pa_assert(new_volume);
1346 pa_assert(channel_map);
1348 s->real_volume = *new_volume;
1349 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1351 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1352 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1353 if (pa_source_flat_volume_enabled(s)) {
1354 pa_cvolume old_volume = o->volume;
1356 /* Follow the root source's real volume. */
1357 o->volume = *new_volume;
1358 pa_cvolume_remap(&o->volume, channel_map, &o->channel_map);
1359 compute_reference_ratio(o);
1361 /* The volume changed, let's tell people so */
1362 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1363 if (o->volume_changed)
1364 o->volume_changed(o);
1366 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1370 update_real_volume(o->destination_source, new_volume, channel_map);
1375 /* Called from main thread. Only called for the root source in shared volume
1377 static void compute_real_volume(pa_source *s) {
1378 pa_source_assert_ref(s);
1379 pa_assert_ctl_context();
1380 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1381 pa_assert(pa_source_flat_volume_enabled(s));
1382 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1384 /* This determines the maximum volume of all streams and sets
1385 * s->real_volume accordingly. */
1387 if (!has_outputs(s)) {
1388 /* In the special case that we have no source outputs we leave the
1389 * volume unmodified. */
1390 update_real_volume(s, &s->reference_volume, &s->channel_map);
1394 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1396 /* First let's determine the new maximum volume of all outputs
1397 * connected to this source */
1398 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1399 update_real_volume(s, &s->real_volume, &s->channel_map);
1401 /* Then, let's update the real ratios/soft volumes of all outputs
1402 * connected to this source */
1403 compute_real_ratios(s);
1406 /* Called from main thread. Only called for the root source in shared volume
1407 * cases, except for internal recursive calls. */
1408 static void propagate_reference_volume(pa_source *s) {
1409 pa_source_output *o;
1412 pa_source_assert_ref(s);
1413 pa_assert_ctl_context();
1414 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1415 pa_assert(pa_source_flat_volume_enabled(s));
1417 /* This is called whenever the source volume changes that is not
1418 * caused by a source output volume change. We need to fix up the
1419 * source output volumes accordingly */
1421 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1422 pa_cvolume old_volume;
1424 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1425 propagate_reference_volume(o->destination_source);
1427 /* Since the origin source uses volume sharing, this output's volume
1428 * needs to be updated to match the root source's real volume, but
1429 * that will be done later in update_shared_real_volume(). */
1433 old_volume = o->volume;
1435 /* This basically calculates:
1437 * o->volume := o->reference_volume * o->reference_ratio */
1439 o->volume = s->reference_volume;
1440 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1441 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1443 /* The volume changed, let's tell people so */
1444 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1446 if (o->volume_changed)
1447 o->volume_changed(o);
1449 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1454 /* Called from main thread. Only called for the root source in volume sharing
1455 * cases, except for internal recursive calls. The return value indicates
1456 * whether any reference volume actually changed. */
1457 static pa_bool_t update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, pa_bool_t save) {
1459 pa_bool_t reference_volume_changed;
1460 pa_source_output *o;
1463 pa_source_assert_ref(s);
1464 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1466 pa_assert(channel_map);
1467 pa_assert(pa_cvolume_valid(v));
1470 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1472 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1473 s->reference_volume = volume;
1475 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1477 if (reference_volume_changed)
1478 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1479 else if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1480 /* If the root source's volume doesn't change, then there can't be any
1481 * changes in the other source in the source tree either.
1483 * It's probably theoretically possible that even if the root source's
1484 * volume changes slightly, some filter source doesn't change its volume
1485 * due to rounding errors. If that happens, we still want to propagate
1486 * the changed root source volume to the sources connected to the
1487 * intermediate source that didn't change its volume. This theoretical
1488 * possibility is the reason why we have that !(s->flags &
1489 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1490 * notice even if we returned here FALSE always if
1491 * reference_volume_changed is FALSE. */
1494 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1495 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1496 update_reference_volume(o->destination_source, v, channel_map, FALSE);
1502 /* Called from main thread */
1503 void pa_source_set_volume(
1505 const pa_cvolume *volume,
1509 pa_cvolume new_reference_volume;
1510 pa_source *root_source;
1512 pa_source_assert_ref(s);
1513 pa_assert_ctl_context();
1514 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1515 pa_assert(!volume || pa_cvolume_valid(volume));
1516 pa_assert(volume || pa_source_flat_volume_enabled(s));
1517 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1519 /* make sure we don't change the volume in PASSTHROUGH mode ...
1520 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1521 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1522 pa_log_warn("Cannot change volume, source is monitor of a PASSTHROUGH sink");
1526 /* In case of volume sharing, the volume is set for the root source first,
1527 * from which it's then propagated to the sharing sources. */
1528 root_source = pa_source_get_master(s);
1530 if (PA_UNLIKELY(!root_source))
1533 /* As a special exception we accept mono volumes on all sources --
1534 * even on those with more complex channel maps */
1537 if (pa_cvolume_compatible(volume, &s->sample_spec))
1538 new_reference_volume = *volume;
1540 new_reference_volume = s->reference_volume;
1541 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1544 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1546 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1547 if (pa_source_flat_volume_enabled(root_source)) {
1548 /* OK, propagate this volume change back to the outputs */
1549 propagate_reference_volume(root_source);
1551 /* And now recalculate the real volume */
1552 compute_real_volume(root_source);
1554 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1558 /* If volume is NULL we synchronize the source's real and
1559 * reference volumes with the stream volumes. */
1561 pa_assert(pa_source_flat_volume_enabled(root_source));
1563 /* Ok, let's determine the new real volume */
1564 compute_real_volume(root_source);
1566 /* Let's 'push' the reference volume if necessary */
1567 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_source->real_volume);
1568 /* If the source and it's root don't have the same number of channels, we need to remap */
1569 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1570 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1571 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1573 /* Now that the reference volume is updated, we can update the streams'
1574 * reference ratios. */
1575 compute_reference_ratios(root_source);
1578 if (root_source->set_volume) {
1579 /* If we have a function set_volume(), then we do not apply a
1580 * soft volume by default. However, set_volume() is free to
1581 * apply one to root_source->soft_volume */
1583 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1584 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1585 root_source->set_volume(root_source);
1588 /* If we have no function set_volume(), then the soft volume
1589 * becomes the real volume */
1590 root_source->soft_volume = root_source->real_volume;
1592 /* This tells the source that soft volume and/or real volume changed */
1594 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1597 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1598 * Only to be called by source implementor */
1599 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1601 pa_source_assert_ref(s);
1602 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1604 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1605 pa_source_assert_io_context(s);
1607 pa_assert_ctl_context();
1610 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1612 s->soft_volume = *volume;
1614 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1615 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1617 s->thread_info.soft_volume = s->soft_volume;
1620 /* Called from the main thread. Only called for the root source in volume sharing
1621 * cases, except for internal recursive calls. */
1622 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1623 pa_source_output *o;
1626 pa_source_assert_ref(s);
1627 pa_assert(old_real_volume);
1628 pa_assert_ctl_context();
1629 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1631 /* This is called when the hardware's real volume changes due to
1632 * some external event. We copy the real volume into our
1633 * reference volume and then rebuild the stream volumes based on
1634 * i->real_ratio which should stay fixed. */
1636 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1637 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1640 /* 1. Make the real volume the reference volume */
1641 update_reference_volume(s, &s->real_volume, &s->channel_map, TRUE);
1644 if (pa_source_flat_volume_enabled(s)) {
1646 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1647 pa_cvolume old_volume = o->volume;
1649 /* 2. Since the source's reference and real volumes are equal
1650 * now our ratios should be too. */
1651 o->reference_ratio = o->real_ratio;
1653 /* 3. Recalculate the new stream reference volume based on the
1654 * reference ratio and the sink's reference volume.
1656 * This basically calculates:
1658 * o->volume = s->reference_volume * o->reference_ratio
1660 * This is identical to propagate_reference_volume() */
1661 o->volume = s->reference_volume;
1662 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1663 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1665 /* Notify if something changed */
1666 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1668 if (o->volume_changed)
1669 o->volume_changed(o);
1671 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1674 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1675 propagate_real_volume(o->destination_source, old_real_volume);
1679 /* Something got changed in the hardware. It probably makes sense
1680 * to save changed hw settings given that hw volume changes not
1681 * triggered by PA are almost certainly done by the user. */
1682 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1683 s->save_volume = TRUE;
1686 /* Called from io thread */
1687 void pa_source_update_volume_and_mute(pa_source *s) {
1689 pa_source_assert_io_context(s);
1691 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1694 /* Called from main thread */
1695 const pa_cvolume *pa_source_get_volume(pa_source *s, pa_bool_t force_refresh) {
1696 pa_source_assert_ref(s);
1697 pa_assert_ctl_context();
1698 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1700 if (s->refresh_volume || force_refresh) {
1701 struct pa_cvolume old_real_volume;
1703 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1705 old_real_volume = s->real_volume;
1707 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1710 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1712 update_real_volume(s, &s->real_volume, &s->channel_map);
1713 propagate_real_volume(s, &old_real_volume);
1716 return &s->reference_volume;
1719 /* Called from main thread. In volume sharing cases, only the root source may
1721 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1722 pa_cvolume old_real_volume;
1724 pa_source_assert_ref(s);
1725 pa_assert_ctl_context();
1726 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1727 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1729 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1731 old_real_volume = s->real_volume;
1732 update_real_volume(s, new_real_volume, &s->channel_map);
1733 propagate_real_volume(s, &old_real_volume);
1736 /* Called from main thread */
1737 void pa_source_set_mute(pa_source *s, pa_bool_t mute, pa_bool_t save) {
1738 pa_bool_t old_muted;
1740 pa_source_assert_ref(s);
1741 pa_assert_ctl_context();
1742 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1744 old_muted = s->muted;
1746 s->save_muted = (old_muted == s->muted && s->save_muted) || save;
1748 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute)
1751 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1753 if (old_muted != s->muted)
1754 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1757 /* Called from main thread */
1758 pa_bool_t pa_source_get_mute(pa_source *s, pa_bool_t force_refresh) {
1760 pa_source_assert_ref(s);
1761 pa_assert_ctl_context();
1762 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1764 if (s->refresh_muted || force_refresh) {
1765 pa_bool_t old_muted = s->muted;
1767 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_mute)
1770 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, NULL, 0, NULL) == 0);
1772 if (old_muted != s->muted) {
1773 s->save_muted = TRUE;
1775 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1777 /* Make sure the soft mute status stays in sync */
1778 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1785 /* Called from main thread */
1786 void pa_source_mute_changed(pa_source *s, pa_bool_t new_muted) {
1787 pa_source_assert_ref(s);
1788 pa_assert_ctl_context();
1789 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1791 /* The source implementor may call this if the mute state changed to make sure everyone is notified */
1793 if (s->muted == new_muted)
1796 s->muted = new_muted;
1797 s->save_muted = TRUE;
1799 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1802 /* Called from main thread */
1803 pa_bool_t pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1804 pa_source_assert_ref(s);
1805 pa_assert_ctl_context();
1808 pa_proplist_update(s->proplist, mode, p);
1810 if (PA_SOURCE_IS_LINKED(s->state)) {
1811 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1812 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1818 /* Called from main thread */
1819 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1820 void pa_source_set_description(pa_source *s, const char *description) {
1822 pa_source_assert_ref(s);
1823 pa_assert_ctl_context();
1825 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1828 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1830 if (old && description && pa_streq(old, description))
1834 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1836 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1838 if (PA_SOURCE_IS_LINKED(s->state)) {
1839 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1840 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1844 /* Called from main thread */
1845 unsigned pa_source_linked_by(pa_source *s) {
1846 pa_source_assert_ref(s);
1847 pa_assert_ctl_context();
1848 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1850 return pa_idxset_size(s->outputs);
1853 /* Called from main thread */
1854 unsigned pa_source_used_by(pa_source *s) {
1857 pa_source_assert_ref(s);
1858 pa_assert_ctl_context();
1859 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1861 ret = pa_idxset_size(s->outputs);
1862 pa_assert(ret >= s->n_corked);
1864 return ret - s->n_corked;
1867 /* Called from main thread */
1868 unsigned pa_source_check_suspend(pa_source *s) {
1870 pa_source_output *o;
1873 pa_source_assert_ref(s);
1874 pa_assert_ctl_context();
1876 if (!PA_SOURCE_IS_LINKED(s->state))
1881 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1882 pa_source_output_state_t st;
1884 st = pa_source_output_get_state(o);
1886 /* We do not assert here. It is perfectly valid for a source output to
1887 * be in the INIT state (i.e. created, marked done but not yet put)
1888 * and we should not care if it's unlinked as it won't contribute
1889 * towards our busy status.
1891 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1894 if (st == PA_SOURCE_OUTPUT_CORKED)
1897 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
1906 /* Called from the IO thread */
1907 static void sync_output_volumes_within_thread(pa_source *s) {
1908 pa_source_output *o;
1911 pa_source_assert_ref(s);
1912 pa_source_assert_io_context(s);
1914 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1915 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
1918 o->thread_info.soft_volume = o->soft_volume;
1919 //pa_source_output_request_rewind(o, 0, TRUE, FALSE, FALSE);
1923 /* Called from the IO thread. Only called for the root source in volume sharing
1924 * cases, except for internal recursive calls. */
1925 static void set_shared_volume_within_thread(pa_source *s) {
1926 pa_source_output *o;
1929 pa_source_assert_ref(s);
1931 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
1933 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1934 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1935 set_shared_volume_within_thread(o->destination_source);
1939 /* Called from IO thread, except when it is not */
1940 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1941 pa_source *s = PA_SOURCE(object);
1942 pa_source_assert_ref(s);
1944 switch ((pa_source_message_t) code) {
1946 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
1947 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
1949 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
1951 if (o->direct_on_input) {
1952 o->thread_info.direct_on_input = o->direct_on_input;
1953 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
1956 pa_assert(!o->thread_info.attached);
1957 o->thread_info.attached = TRUE;
1962 pa_source_output_set_state_within_thread(o, o->state);
1964 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
1965 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
1967 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
1969 /* We don't just invalidate the requested latency here,
1970 * because if we are in a move we might need to fix up the
1971 * requested latency. */
1972 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
1974 /* In flat volume mode we need to update the volume as
1976 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
1979 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
1980 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
1982 pa_source_output_set_state_within_thread(o, o->state);
1987 pa_assert(o->thread_info.attached);
1988 o->thread_info.attached = FALSE;
1990 if (o->thread_info.direct_on_input) {
1991 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
1992 o->thread_info.direct_on_input = NULL;
1995 if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
1996 pa_source_output_unref(o);
1998 pa_source_invalidate_requested_latency(s, TRUE);
2000 /* In flat volume mode we need to update the volume as
2002 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
2005 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
2006 pa_source *root_source = pa_source_get_master(s);
2008 if (PA_LIKELY(root_source))
2009 set_shared_volume_within_thread(root_source);
2014 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
2016 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2018 pa_source_volume_change_push(s);
2020 /* Fall through ... */
2022 case PA_SOURCE_MESSAGE_SET_VOLUME:
2024 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2025 s->thread_info.soft_volume = s->soft_volume;
2028 /* Fall through ... */
2030 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
2031 sync_output_volumes_within_thread(s);
2034 case PA_SOURCE_MESSAGE_GET_VOLUME:
2036 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
2038 pa_source_volume_change_flush(s);
2039 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2042 /* In case source implementor reset SW volume. */
2043 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2044 s->thread_info.soft_volume = s->soft_volume;
2049 case PA_SOURCE_MESSAGE_SET_MUTE:
2051 if (s->thread_info.soft_muted != s->muted) {
2052 s->thread_info.soft_muted = s->muted;
2055 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2060 case PA_SOURCE_MESSAGE_GET_MUTE:
2062 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2067 case PA_SOURCE_MESSAGE_SET_STATE: {
2069 pa_bool_t suspend_change =
2070 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2071 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
2073 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2075 if (suspend_change) {
2076 pa_source_output *o;
2079 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2080 if (o->suspend_within_thread)
2081 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2087 case PA_SOURCE_MESSAGE_DETACH:
2089 /* Detach all streams */
2090 pa_source_detach_within_thread(s);
2093 case PA_SOURCE_MESSAGE_ATTACH:
2095 /* Reattach all streams */
2096 pa_source_attach_within_thread(s);
2099 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2101 pa_usec_t *usec = userdata;
2102 *usec = pa_source_get_requested_latency_within_thread(s);
2104 /* Yes, that's right, the IO thread will see -1 when no
2105 * explicit requested latency is configured, the main
2106 * thread will see max_latency */
2107 if (*usec == (pa_usec_t) -1)
2108 *usec = s->thread_info.max_latency;
2113 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2114 pa_usec_t *r = userdata;
2116 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2121 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2122 pa_usec_t *r = userdata;
2124 r[0] = s->thread_info.min_latency;
2125 r[1] = s->thread_info.max_latency;
2130 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2132 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2135 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2137 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2140 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2142 *((size_t*) userdata) = s->thread_info.max_rewind;
2145 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2147 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2150 case PA_SOURCE_MESSAGE_GET_LATENCY:
2152 if (s->monitor_of) {
2153 *((pa_usec_t*) userdata) = 0;
2157 /* Implementors need to overwrite this implementation! */
2160 case PA_SOURCE_MESSAGE_SET_PORT:
2162 pa_assert(userdata);
2164 struct source_message_set_port *msg_data = userdata;
2165 msg_data->ret = s->set_port(s, msg_data->port);
2169 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2170 /* This message is sent from IO-thread and handled in main thread. */
2171 pa_assert_ctl_context();
2173 /* Make sure we're not messing with main thread when no longer linked */
2174 if (!PA_SOURCE_IS_LINKED(s->state))
2177 pa_source_get_volume(s, TRUE);
2178 pa_source_get_mute(s, TRUE);
2181 case PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET:
2182 s->thread_info.latency_offset = (pa_usec_t) offset;
2185 case PA_SOURCE_MESSAGE_MAX:
2192 /* Called from main thread */
2193 int pa_source_suspend_all(pa_core *c, pa_bool_t suspend, pa_suspend_cause_t cause) {
2198 pa_core_assert_ref(c);
2199 pa_assert_ctl_context();
2200 pa_assert(cause != 0);
2202 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2205 if (source->monitor_of)
2208 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2215 /* Called from main thread */
2216 void pa_source_detach(pa_source *s) {
2217 pa_source_assert_ref(s);
2218 pa_assert_ctl_context();
2219 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2221 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL) == 0);
2224 /* Called from main thread */
2225 void pa_source_attach(pa_source *s) {
2226 pa_source_assert_ref(s);
2227 pa_assert_ctl_context();
2228 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2230 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
2233 /* Called from IO thread */
2234 void pa_source_detach_within_thread(pa_source *s) {
2235 pa_source_output *o;
2238 pa_source_assert_ref(s);
2239 pa_source_assert_io_context(s);
2240 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2242 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2247 /* Called from IO thread */
2248 void pa_source_attach_within_thread(pa_source *s) {
2249 pa_source_output *o;
2252 pa_source_assert_ref(s);
2253 pa_source_assert_io_context(s);
2254 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2256 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2261 /* Called from IO thread */
2262 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2263 pa_usec_t result = (pa_usec_t) -1;
2264 pa_source_output *o;
2267 pa_source_assert_ref(s);
2268 pa_source_assert_io_context(s);
2270 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2271 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2273 if (s->thread_info.requested_latency_valid)
2274 return s->thread_info.requested_latency;
2276 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2277 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2278 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2279 result = o->thread_info.requested_source_latency;
2281 if (result != (pa_usec_t) -1)
2282 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2284 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2285 /* Only cache this if we are fully set up */
2286 s->thread_info.requested_latency = result;
2287 s->thread_info.requested_latency_valid = TRUE;
2293 /* Called from main thread */
2294 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2297 pa_source_assert_ref(s);
2298 pa_assert_ctl_context();
2299 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2301 if (s->state == PA_SOURCE_SUSPENDED)
2304 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2309 /* Called from IO thread */
2310 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2311 pa_source_output *o;
2314 pa_source_assert_ref(s);
2315 pa_source_assert_io_context(s);
2317 if (max_rewind == s->thread_info.max_rewind)
2320 s->thread_info.max_rewind = max_rewind;
2322 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2323 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2324 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2327 /* Called from main thread */
2328 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2329 pa_source_assert_ref(s);
2330 pa_assert_ctl_context();
2332 if (PA_SOURCE_IS_LINKED(s->state))
2333 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2335 pa_source_set_max_rewind_within_thread(s, max_rewind);
2338 /* Called from IO thread */
2339 void pa_source_invalidate_requested_latency(pa_source *s, pa_bool_t dynamic) {
2340 pa_source_output *o;
2343 pa_source_assert_ref(s);
2344 pa_source_assert_io_context(s);
2346 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2347 s->thread_info.requested_latency_valid = FALSE;
2351 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2353 if (s->update_requested_latency)
2354 s->update_requested_latency(s);
2356 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2357 if (o->update_source_requested_latency)
2358 o->update_source_requested_latency(o);
2362 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2365 /* Called from main thread */
2366 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2367 pa_source_assert_ref(s);
2368 pa_assert_ctl_context();
2370 /* min_latency == 0: no limit
2371 * min_latency anything else: specified limit
2373 * Similar for max_latency */
2375 if (min_latency < ABSOLUTE_MIN_LATENCY)
2376 min_latency = ABSOLUTE_MIN_LATENCY;
2378 if (max_latency <= 0 ||
2379 max_latency > ABSOLUTE_MAX_LATENCY)
2380 max_latency = ABSOLUTE_MAX_LATENCY;
2382 pa_assert(min_latency <= max_latency);
2384 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2385 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2386 max_latency == ABSOLUTE_MAX_LATENCY) ||
2387 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2389 if (PA_SOURCE_IS_LINKED(s->state)) {
2395 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2397 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2400 /* Called from main thread */
2401 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2402 pa_source_assert_ref(s);
2403 pa_assert_ctl_context();
2404 pa_assert(min_latency);
2405 pa_assert(max_latency);
2407 if (PA_SOURCE_IS_LINKED(s->state)) {
2408 pa_usec_t r[2] = { 0, 0 };
2410 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2412 *min_latency = r[0];
2413 *max_latency = r[1];
2415 *min_latency = s->thread_info.min_latency;
2416 *max_latency = s->thread_info.max_latency;
2420 /* Called from IO thread, and from main thread before pa_source_put() is called */
2421 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2422 pa_source_assert_ref(s);
2423 pa_source_assert_io_context(s);
2425 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2426 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2427 pa_assert(min_latency <= max_latency);
2429 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2430 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2431 max_latency == ABSOLUTE_MAX_LATENCY) ||
2432 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2435 if (s->thread_info.min_latency == min_latency &&
2436 s->thread_info.max_latency == max_latency)
2439 s->thread_info.min_latency = min_latency;
2440 s->thread_info.max_latency = max_latency;
2442 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2443 pa_source_output *o;
2446 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2447 if (o->update_source_latency_range)
2448 o->update_source_latency_range(o);
2451 pa_source_invalidate_requested_latency(s, FALSE);
2454 /* Called from main thread, before the source is put */
2455 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2456 pa_source_assert_ref(s);
2457 pa_assert_ctl_context();
2459 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2460 pa_assert(latency == 0);
2464 if (latency < ABSOLUTE_MIN_LATENCY)
2465 latency = ABSOLUTE_MIN_LATENCY;
2467 if (latency > ABSOLUTE_MAX_LATENCY)
2468 latency = ABSOLUTE_MAX_LATENCY;
2470 if (PA_SOURCE_IS_LINKED(s->state))
2471 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2473 s->thread_info.fixed_latency = latency;
2476 /* Called from main thread */
2477 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2480 pa_source_assert_ref(s);
2481 pa_assert_ctl_context();
2483 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2486 if (PA_SOURCE_IS_LINKED(s->state))
2487 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2489 latency = s->thread_info.fixed_latency;
2494 /* Called from IO thread */
2495 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2496 pa_source_assert_ref(s);
2497 pa_source_assert_io_context(s);
2499 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2500 pa_assert(latency == 0);
2504 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2505 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2507 if (s->thread_info.fixed_latency == latency)
2510 s->thread_info.fixed_latency = latency;
2512 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2513 pa_source_output *o;
2516 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2517 if (o->update_source_fixed_latency)
2518 o->update_source_fixed_latency(o);
2521 pa_source_invalidate_requested_latency(s, FALSE);
2524 /* Called from main thread */
2525 void pa_source_set_latency_offset(pa_source *s, pa_usec_t offset) {
2526 pa_source_assert_ref(s);
2528 s->latency_offset = offset;
2530 if (PA_SOURCE_IS_LINKED(s->state))
2531 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_OFFSET, NULL, (int64_t) offset, NULL) == 0);
2533 s->thread_info.fixed_latency = offset;
2536 /* Called from main thread */
2537 size_t pa_source_get_max_rewind(pa_source *s) {
2539 pa_assert_ctl_context();
2540 pa_source_assert_ref(s);
2542 if (!PA_SOURCE_IS_LINKED(s->state))
2543 return s->thread_info.max_rewind;
2545 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2550 /* Called from main context */
2551 int pa_source_set_port(pa_source *s, const char *name, pa_bool_t save) {
2552 pa_device_port *port;
2555 pa_source_assert_ref(s);
2556 pa_assert_ctl_context();
2559 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2560 return -PA_ERR_NOTIMPLEMENTED;
2563 if (!s->ports || !name)
2564 return -PA_ERR_NOENTITY;
2566 if (!(port = pa_hashmap_get(s->ports, name)))
2567 return -PA_ERR_NOENTITY;
2569 if (s->active_port == port) {
2570 s->save_port = s->save_port || save;
2574 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2575 struct source_message_set_port msg = { .port = port, .ret = 0 };
2576 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2580 ret = s->set_port(s, port);
2583 return -PA_ERR_NOENTITY;
2585 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2587 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2589 s->active_port = port;
2590 s->save_port = save;
2592 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2597 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2599 /* Called from the IO thread. */
2600 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2601 pa_source_volume_change *c;
2602 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2603 c = pa_xnew(pa_source_volume_change, 1);
2605 PA_LLIST_INIT(pa_source_volume_change, c);
2607 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2611 /* Called from the IO thread. */
2612 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2614 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2618 /* Called from the IO thread. */
2619 void pa_source_volume_change_push(pa_source *s) {
2620 pa_source_volume_change *c = NULL;
2621 pa_source_volume_change *nc = NULL;
2622 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2624 const char *direction = NULL;
2627 nc = pa_source_volume_change_new(s);
2629 /* NOTE: There is already more different volumes in pa_source that I can remember.
2630 * Adding one more volume for HW would get us rid of this, but I am trying
2631 * to survive with the ones we already have. */
2632 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2634 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2635 pa_log_debug("Volume not changing");
2636 pa_source_volume_change_free(nc);
2640 nc->at = pa_source_get_latency_within_thread(s);
2641 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2643 if (s->thread_info.volume_changes_tail) {
2644 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2645 /* If volume is going up let's do it a bit late. If it is going
2646 * down let's do it a bit early. */
2647 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2648 if (nc->at + safety_margin > c->at) {
2649 nc->at += safety_margin;
2654 else if (nc->at - safety_margin > c->at) {
2655 nc->at -= safety_margin;
2663 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2664 nc->at += safety_margin;
2667 nc->at -= safety_margin;
2670 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2673 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2676 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2678 /* We can ignore volume events that came earlier but should happen later than this. */
2679 PA_LLIST_FOREACH(c, nc->next) {
2680 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2681 pa_source_volume_change_free(c);
2684 s->thread_info.volume_changes_tail = nc;
2687 /* Called from the IO thread. */
2688 static void pa_source_volume_change_flush(pa_source *s) {
2689 pa_source_volume_change *c = s->thread_info.volume_changes;
2691 s->thread_info.volume_changes = NULL;
2692 s->thread_info.volume_changes_tail = NULL;
2694 pa_source_volume_change *next = c->next;
2695 pa_source_volume_change_free(c);
2700 /* Called from the IO thread. */
2701 pa_bool_t pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2703 pa_bool_t ret = FALSE;
2707 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2713 pa_assert(s->write_volume);
2715 now = pa_rtclock_now();
2717 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2718 pa_source_volume_change *c = s->thread_info.volume_changes;
2719 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2720 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2721 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2723 s->thread_info.current_hw_volume = c->hw_volume;
2724 pa_source_volume_change_free(c);
2730 if (s->thread_info.volume_changes) {
2732 *usec_to_next = s->thread_info.volume_changes->at - now;
2733 if (pa_log_ratelimit(PA_LOG_DEBUG))
2734 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2739 s->thread_info.volume_changes_tail = NULL;
2745 /* Called from the main thread */
2746 /* Gets the list of formats supported by the source. The members and idxset must
2747 * be freed by the caller. */
2748 pa_idxset* pa_source_get_formats(pa_source *s) {
2753 if (s->get_formats) {
2754 /* Source supports format query, all is good */
2755 ret = s->get_formats(s);
2757 /* Source doesn't support format query, so assume it does PCM */
2758 pa_format_info *f = pa_format_info_new();
2759 f->encoding = PA_ENCODING_PCM;
2761 ret = pa_idxset_new(NULL, NULL);
2762 pa_idxset_put(ret, f, NULL);
2768 /* Called from the main thread */
2769 /* Checks if the source can accept this format */
2770 pa_bool_t pa_source_check_format(pa_source *s, pa_format_info *f)
2772 pa_idxset *formats = NULL;
2773 pa_bool_t ret = FALSE;
2778 formats = pa_source_get_formats(s);
2781 pa_format_info *finfo_device;
2784 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2785 if (pa_format_info_is_compatible(finfo_device, f)) {
2791 pa_idxset_free(formats, (pa_free2_cb_t) pa_format_info_free2, NULL);
2797 /* Called from the main thread */
2798 /* Calculates the intersection between formats supported by the source and
2799 * in_formats, and returns these, in the order of the source's formats. */
2800 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2801 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2802 pa_format_info *f_source, *f_in;
2807 if (!in_formats || pa_idxset_isempty(in_formats))
2810 source_formats = pa_source_get_formats(s);
2812 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2813 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2814 if (pa_format_info_is_compatible(f_source, f_in))
2815 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2821 pa_idxset_free(source_formats, (pa_free2_cb_t) pa_format_info_free2, NULL);