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_volume(pa_source_new_data *data, const pa_cvolume *volume) {
104 if ((data->volume_is_set = !!volume))
105 data->volume = *volume;
108 void pa_source_new_data_set_muted(pa_source_new_data *data, pa_bool_t mute) {
111 data->muted_is_set = TRUE;
112 data->muted = !!mute;
115 void pa_source_new_data_set_port(pa_source_new_data *data, const char *port) {
118 pa_xfree(data->active_port);
119 data->active_port = pa_xstrdup(port);
122 void pa_source_new_data_done(pa_source_new_data *data) {
125 pa_proplist_free(data->proplist);
130 while ((p = pa_hashmap_steal_first(data->ports)))
131 pa_device_port_free(p);
133 pa_hashmap_free(data->ports, NULL, NULL);
136 pa_xfree(data->name);
137 pa_xfree(data->active_port);
140 /* Called from main context */
141 static void reset_callbacks(pa_source *s) {
145 s->get_volume = NULL;
146 s->set_volume = NULL;
147 s->write_volume = NULL;
150 s->update_requested_latency = NULL;
152 s->get_formats = NULL;
155 /* Called from main context */
156 pa_source* pa_source_new(
158 pa_source_new_data *data,
159 pa_source_flags_t flags) {
163 char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
168 pa_assert(data->name);
169 pa_assert_ctl_context();
171 s = pa_msgobject_new(pa_source);
173 if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
174 pa_log_debug("Failed to register name %s.", data->name);
179 pa_source_new_data_set_name(data, name);
181 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
183 pa_namereg_unregister(core, name);
187 /* FIXME, need to free s here on failure */
189 pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
190 pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
192 pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
194 if (!data->channel_map_is_set)
195 pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
197 pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
198 pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
200 /* FIXME: There should probably be a general function for checking whether
201 * the source volume is allowed to be set, like there is for source outputs. */
202 pa_assert(!data->volume_is_set || !(flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
204 if (!data->volume_is_set) {
205 pa_cvolume_reset(&data->volume, data->sample_spec.channels);
206 data->save_volume = FALSE;
209 pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
210 pa_return_null_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec));
212 if (!data->muted_is_set)
216 pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
218 pa_device_init_description(data->proplist);
219 pa_device_init_icon(data->proplist, FALSE);
220 pa_device_init_intended_roles(data->proplist);
222 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
224 pa_namereg_unregister(core, name);
228 s->parent.parent.free = source_free;
229 s->parent.process_msg = pa_source_process_msg;
232 s->state = PA_SOURCE_INIT;
235 s->suspend_cause = 0;
236 s->name = pa_xstrdup(name);
237 s->proplist = pa_proplist_copy(data->proplist);
238 s->driver = pa_xstrdup(pa_path_get_filename(data->driver));
239 s->module = data->module;
240 s->card = data->card;
242 s->priority = pa_device_init_priority(s->proplist);
244 s->sample_spec = data->sample_spec;
245 s->channel_map = data->channel_map;
247 s->outputs = pa_idxset_new(NULL, NULL);
249 s->monitor_of = NULL;
250 s->output_from_master = NULL;
252 s->reference_volume = s->real_volume = data->volume;
253 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
254 s->base_volume = PA_VOLUME_NORM;
255 s->n_volume_steps = PA_VOLUME_NORM+1;
256 s->muted = data->muted;
257 s->refresh_volume = s->refresh_muted = FALSE;
264 /* As a minor optimization we just steal the list instead of
266 s->ports = data->ports;
269 s->active_port = NULL;
270 s->save_port = FALSE;
272 if (data->active_port && s->ports)
273 if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
274 s->save_port = data->save_port;
276 if (!s->active_port && s->ports) {
280 PA_HASHMAP_FOREACH(p, s->ports, state)
281 if (!s->active_port || p->priority > s->active_port->priority)
285 s->save_volume = data->save_volume;
286 s->save_muted = data->save_muted;
288 pa_silence_memchunk_get(
289 &core->silence_cache,
295 s->thread_info.rtpoll = NULL;
296 s->thread_info.outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
297 s->thread_info.soft_volume = s->soft_volume;
298 s->thread_info.soft_muted = s->muted;
299 s->thread_info.state = s->state;
300 s->thread_info.max_rewind = 0;
301 s->thread_info.requested_latency_valid = FALSE;
302 s->thread_info.requested_latency = 0;
303 s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
304 s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
305 s->thread_info.fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
307 PA_LLIST_HEAD_INIT(pa_source_volume_change, s->thread_info.volume_changes);
308 s->thread_info.volume_changes_tail = NULL;
309 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
310 s->thread_info.volume_change_safety_margin = core->deferred_volume_safety_margin_usec;
311 s->thread_info.volume_change_extra_delay = core->deferred_volume_extra_delay_usec;
313 /* FIXME: This should probably be moved to pa_source_put() */
314 pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
317 pa_assert_se(pa_idxset_put(s->card->sources, s, NULL) >= 0);
319 pt = pa_proplist_to_string_sep(s->proplist, "\n ");
320 pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s\n %s",
323 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
324 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
331 /* Called from main context */
332 static int source_set_state(pa_source *s, pa_source_state_t state) {
334 pa_bool_t suspend_change;
335 pa_source_state_t original_state;
338 pa_assert_ctl_context();
340 if (s->state == state)
343 original_state = s->state;
346 (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
347 (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
350 if ((ret = s->set_state(s, state)) < 0)
354 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
357 s->set_state(s, original_state);
364 if (state != PA_SOURCE_UNLINKED) { /* if we enter UNLINKED state pa_source_unlink() will fire the appropriate events */
365 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
366 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
369 if (suspend_change) {
373 /* We're suspending or resuming, tell everyone about it */
375 PA_IDXSET_FOREACH(o, s->outputs, idx)
376 if (s->state == PA_SOURCE_SUSPENDED &&
377 (o->flags & PA_SOURCE_OUTPUT_KILL_ON_SUSPEND))
378 pa_source_output_kill(o);
380 o->suspend(o, state == PA_SOURCE_SUSPENDED);
386 void pa_source_set_get_volume_callback(pa_source *s, pa_source_cb_t cb) {
392 void pa_source_set_set_volume_callback(pa_source *s, pa_source_cb_t cb) {
393 pa_source_flags_t flags;
396 pa_assert(!s->write_volume || cb);
400 /* Save the current flags so we can tell if they've changed */
404 /* The source implementor is responsible for setting decibel volume support */
405 s->flags |= PA_SOURCE_HW_VOLUME_CTRL;
407 s->flags &= ~PA_SOURCE_HW_VOLUME_CTRL;
408 /* See note below in pa_source_put() about volume sharing and decibel volumes */
409 pa_source_enable_decibel_volume(s, !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
412 /* If the flags have changed after init, let any clients know via a change event */
413 if (s->state != PA_SOURCE_INIT && flags != s->flags)
414 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
417 void pa_source_set_write_volume_callback(pa_source *s, pa_source_cb_t cb) {
418 pa_source_flags_t flags;
421 pa_assert(!cb || s->set_volume);
423 s->write_volume = cb;
425 /* Save the current flags so we can tell if they've changed */
429 s->flags |= PA_SOURCE_DEFERRED_VOLUME;
431 s->flags &= ~PA_SOURCE_DEFERRED_VOLUME;
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_get_mute_callback(pa_source *s, pa_source_cb_t cb) {
444 void pa_source_set_set_mute_callback(pa_source *s, pa_source_cb_t cb) {
445 pa_source_flags_t flags;
451 /* Save the current flags so we can tell if they've changed */
455 s->flags |= PA_SOURCE_HW_MUTE_CTRL;
457 s->flags &= ~PA_SOURCE_HW_MUTE_CTRL;
459 /* If the flags have changed after init, let any clients know via a change event */
460 if (s->state != PA_SOURCE_INIT && flags != s->flags)
461 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
464 static void enable_flat_volume(pa_source *s, pa_bool_t enable) {
465 pa_source_flags_t flags;
469 /* Always follow the overall user preference here */
470 enable = enable && s->core->flat_volumes;
472 /* Save the current flags so we can tell if they've changed */
476 s->flags |= PA_SOURCE_FLAT_VOLUME;
478 s->flags &= ~PA_SOURCE_FLAT_VOLUME;
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 void pa_source_enable_decibel_volume(pa_source *s, pa_bool_t enable) {
486 pa_source_flags_t flags;
490 /* Save the current flags so we can tell if they've changed */
494 s->flags |= PA_SOURCE_DECIBEL_VOLUME;
495 enable_flat_volume(s, TRUE);
497 s->flags &= ~PA_SOURCE_DECIBEL_VOLUME;
498 enable_flat_volume(s, FALSE);
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 /* Called from main context */
507 void pa_source_put(pa_source *s) {
508 pa_source_assert_ref(s);
509 pa_assert_ctl_context();
511 pa_assert(s->state == PA_SOURCE_INIT);
512 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || s->output_from_master);
514 /* The following fields must be initialized properly when calling _put() */
515 pa_assert(s->asyncmsgq);
516 pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
518 /* Generally, flags should be initialized via pa_source_new(). As a
519 * special exception we allow some volume related flags to be set
520 * between _new() and _put() by the callback setter functions above.
522 * Thus we implement a couple safeguards here which ensure the above
523 * setters were used (or at least the implementor made manual changes
524 * in a compatible way).
526 * Note: All of these flags set here can change over the life time
528 pa_assert(!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) || s->set_volume);
529 pa_assert(!(s->flags & PA_SOURCE_DEFERRED_VOLUME) || s->write_volume);
530 pa_assert(!(s->flags & PA_SOURCE_HW_MUTE_CTRL) || s->set_mute);
532 /* XXX: Currently decibel volume is disabled for all sources that use volume
533 * sharing. When the master source supports decibel volume, it would be good
534 * to have the flag also in the filter source, but currently we don't do that
535 * so that the flags of the filter source never change when it's moved from
536 * a master source to another. One solution for this problem would be to
537 * remove user-visible volume altogether from filter sources when volume
538 * sharing is used, but the current approach was easier to implement... */
539 /* We always support decibel volumes in software, otherwise we leave it to
540 * the source implementor to set this flag as needed.
542 * Note: This flag can also change over the life time of the source. */
543 if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
544 pa_source_enable_decibel_volume(s, TRUE);
546 /* If the source implementor support DB volumes by itself, we should always
547 * try and enable flat volumes too */
548 if ((s->flags & PA_SOURCE_DECIBEL_VOLUME))
549 enable_flat_volume(s, TRUE);
551 if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
552 pa_source *root_source = s->output_from_master->source;
554 while (root_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
555 root_source = root_source->output_from_master->source;
557 s->reference_volume = root_source->reference_volume;
558 pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
560 s->real_volume = root_source->real_volume;
561 pa_cvolume_remap(&s->real_volume, &root_source->channel_map, &s->channel_map);
563 /* We assume that if the sink implementor changed the default
564 * volume he did so in real_volume, because that is the usual
565 * place where he is supposed to place his changes. */
566 s->reference_volume = s->real_volume;
568 s->thread_info.soft_volume = s->soft_volume;
569 s->thread_info.soft_muted = s->muted;
570 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
572 pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL)
573 || (s->base_volume == PA_VOLUME_NORM
574 && ((s->flags & PA_SOURCE_DECIBEL_VOLUME || (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)))));
575 pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
576 pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == (s->thread_info.fixed_latency != 0));
578 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
580 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
581 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
584 /* Called from main context */
585 void pa_source_unlink(pa_source *s) {
587 pa_source_output *o, *j = NULL;
590 pa_assert_ctl_context();
592 /* See pa_sink_unlink() for a couple of comments how this function
595 linked = PA_SOURCE_IS_LINKED(s->state);
598 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
600 if (s->state != PA_SOURCE_UNLINKED)
601 pa_namereg_unregister(s->core, s->name);
602 pa_idxset_remove_by_data(s->core->sources, s, NULL);
605 pa_idxset_remove_by_data(s->card->sources, s, NULL);
607 while ((o = pa_idxset_first(s->outputs, NULL))) {
609 pa_source_output_kill(o);
614 source_set_state(s, PA_SOURCE_UNLINKED);
616 s->state = PA_SOURCE_UNLINKED;
621 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
622 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
626 /* Called from main context */
627 static void source_free(pa_object *o) {
628 pa_source_output *so;
629 pa_source *s = PA_SOURCE(o);
632 pa_assert_ctl_context();
633 pa_assert(pa_source_refcnt(s) == 0);
635 if (PA_SOURCE_IS_LINKED(s->state))
638 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
640 pa_idxset_free(s->outputs, NULL, NULL);
642 while ((so = pa_hashmap_steal_first(s->thread_info.outputs)))
643 pa_source_output_unref(so);
645 pa_hashmap_free(s->thread_info.outputs, NULL, NULL);
647 if (s->silence.memblock)
648 pa_memblock_unref(s->silence.memblock);
654 pa_proplist_free(s->proplist);
659 while ((p = pa_hashmap_steal_first(s->ports)))
660 pa_device_port_free(p);
662 pa_hashmap_free(s->ports, NULL, NULL);
668 /* Called from main context, and not while the IO thread is active, please */
669 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
670 pa_source_assert_ref(s);
671 pa_assert_ctl_context();
676 /* Called from main context, and not while the IO thread is active, please */
677 void pa_source_update_flags(pa_source *s, pa_source_flags_t mask, pa_source_flags_t value) {
678 pa_source_assert_ref(s);
679 pa_assert_ctl_context();
684 /* For now, allow only a minimal set of flags to be changed. */
685 pa_assert((mask & ~(PA_SOURCE_DYNAMIC_LATENCY|PA_SOURCE_LATENCY)) == 0);
687 s->flags = (s->flags & ~mask) | (value & mask);
690 /* Called from IO context, or before _put() from main context */
691 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
692 pa_source_assert_ref(s);
693 pa_source_assert_io_context(s);
695 s->thread_info.rtpoll = p;
698 /* Called from main context */
699 int pa_source_update_status(pa_source*s) {
700 pa_source_assert_ref(s);
701 pa_assert_ctl_context();
702 pa_assert(PA_SOURCE_IS_LINKED(s->state));
704 if (s->state == PA_SOURCE_SUSPENDED)
707 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
710 /* Called from main context */
711 int pa_source_suspend(pa_source *s, pa_bool_t suspend, pa_suspend_cause_t cause) {
712 pa_source_assert_ref(s);
713 pa_assert_ctl_context();
714 pa_assert(PA_SOURCE_IS_LINKED(s->state));
715 pa_assert(cause != 0);
717 if (s->monitor_of && cause != PA_SUSPEND_PASSTHROUGH)
718 return -PA_ERR_NOTSUPPORTED;
721 s->suspend_cause |= cause;
723 s->suspend_cause &= ~cause;
725 if ((pa_source_get_state(s) == PA_SOURCE_SUSPENDED) == !!s->suspend_cause)
728 pa_log_debug("Suspend cause of source %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
730 if (s->suspend_cause)
731 return source_set_state(s, PA_SOURCE_SUSPENDED);
733 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
736 /* Called from main context */
737 int pa_source_sync_suspend(pa_source *s) {
738 pa_sink_state_t state;
740 pa_source_assert_ref(s);
741 pa_assert_ctl_context();
742 pa_assert(PA_SOURCE_IS_LINKED(s->state));
743 pa_assert(s->monitor_of);
745 state = pa_sink_get_state(s->monitor_of);
747 if (state == PA_SINK_SUSPENDED)
748 return source_set_state(s, PA_SOURCE_SUSPENDED);
750 pa_assert(PA_SINK_IS_OPENED(state));
752 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
755 /* Called from main context */
756 pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q) {
757 pa_source_output *o, *n;
760 pa_source_assert_ref(s);
761 pa_assert_ctl_context();
762 pa_assert(PA_SOURCE_IS_LINKED(s->state));
767 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = n) {
768 n = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx));
770 pa_source_output_ref(o);
772 if (pa_source_output_start_move(o) >= 0)
775 pa_source_output_unref(o);
781 /* Called from main context */
782 void pa_source_move_all_finish(pa_source *s, pa_queue *q, pa_bool_t save) {
785 pa_source_assert_ref(s);
786 pa_assert_ctl_context();
787 pa_assert(PA_SOURCE_IS_LINKED(s->state));
790 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
791 if (pa_source_output_finish_move(o, s, save) < 0)
792 pa_source_output_fail_move(o);
794 pa_source_output_unref(o);
797 pa_queue_free(q, NULL, NULL);
800 /* Called from main context */
801 void pa_source_move_all_fail(pa_queue *q) {
804 pa_assert_ctl_context();
807 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
808 pa_source_output_fail_move(o);
809 pa_source_output_unref(o);
812 pa_queue_free(q, NULL, NULL);
815 /* Called from IO thread context */
816 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
820 pa_source_assert_ref(s);
821 pa_source_assert_io_context(s);
822 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
827 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
830 pa_log_debug("Processing rewind...");
832 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
833 pa_source_output_assert_ref(o);
834 pa_source_output_process_rewind(o, nbytes);
838 /* Called from IO thread context */
839 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
843 pa_source_assert_ref(s);
844 pa_source_assert_io_context(s);
845 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
848 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
851 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
852 pa_memchunk vchunk = *chunk;
854 pa_memblock_ref(vchunk.memblock);
855 pa_memchunk_make_writable(&vchunk, 0);
857 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
858 pa_silence_memchunk(&vchunk, &s->sample_spec);
860 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
862 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
863 pa_source_output_assert_ref(o);
865 if (!o->thread_info.direct_on_input)
866 pa_source_output_push(o, &vchunk);
869 pa_memblock_unref(vchunk.memblock);
872 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
873 pa_source_output_assert_ref(o);
875 if (!o->thread_info.direct_on_input)
876 pa_source_output_push(o, chunk);
881 /* Called from IO thread context */
882 void pa_source_post_direct(pa_source*s, pa_source_output *o, 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));
886 pa_source_output_assert_ref(o);
887 pa_assert(o->thread_info.direct_on_input);
890 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
893 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
894 pa_memchunk vchunk = *chunk;
896 pa_memblock_ref(vchunk.memblock);
897 pa_memchunk_make_writable(&vchunk, 0);
899 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
900 pa_silence_memchunk(&vchunk, &s->sample_spec);
902 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
904 pa_source_output_push(o, &vchunk);
906 pa_memblock_unref(vchunk.memblock);
908 pa_source_output_push(o, chunk);
911 /* Called from main thread */
912 pa_usec_t pa_source_get_latency(pa_source *s) {
915 pa_source_assert_ref(s);
916 pa_assert_ctl_context();
917 pa_assert(PA_SOURCE_IS_LINKED(s->state));
919 if (s->state == PA_SOURCE_SUSPENDED)
922 if (!(s->flags & PA_SOURCE_LATENCY))
925 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
930 /* Called from IO thread */
931 pa_usec_t pa_source_get_latency_within_thread(pa_source *s) {
935 pa_source_assert_ref(s);
936 pa_source_assert_io_context(s);
937 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
939 /* The returned value is supposed to be in the time domain of the sound card! */
941 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
944 if (!(s->flags & PA_SOURCE_LATENCY))
949 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
951 if (o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
957 /* Called from the main thread (and also from the IO thread while the main
958 * thread is waiting).
960 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
961 * set. Instead, flat volume mode is detected by checking whether the root source
962 * has the flag set. */
963 pa_bool_t pa_source_flat_volume_enabled(pa_source *s) {
964 pa_source_assert_ref(s);
966 while (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
967 s = s->output_from_master->source;
969 return (s->flags & PA_SOURCE_FLAT_VOLUME);
972 /* Called from main context */
973 pa_bool_t pa_source_is_passthrough(pa_source *s) {
975 pa_source_assert_ref(s);
977 /* NB Currently only monitor sources support passthrough mode */
978 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
981 /* Called from main context */
982 void pa_source_enter_passthrough(pa_source *s) {
985 /* set the volume to NORM */
986 s->saved_volume = *pa_source_get_volume(s, TRUE);
987 s->saved_save_volume = s->save_volume;
989 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
990 pa_source_set_volume(s, &volume, TRUE, FALSE);
993 /* Called from main context */
994 void pa_source_leave_passthrough(pa_source *s) {
995 /* Restore source volume to what it was before we entered passthrough mode */
996 pa_source_set_volume(s, &s->saved_volume, TRUE, s->saved_save_volume);
998 pa_cvolume_init(&s->saved_volume);
999 s->saved_save_volume = FALSE;
1002 /* Called from main context. */
1003 static void compute_reference_ratio(pa_source_output *o) {
1005 pa_cvolume remapped;
1008 pa_assert(pa_source_flat_volume_enabled(o->source));
1011 * Calculates the reference ratio from the source's reference
1012 * volume. This basically calculates:
1014 * o->reference_ratio = o->volume / o->source->reference_volume
1017 remapped = o->source->reference_volume;
1018 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1020 o->reference_ratio.channels = o->sample_spec.channels;
1022 for (c = 0; c < o->sample_spec.channels; c++) {
1024 /* We don't update when the source volume is 0 anyway */
1025 if (remapped.values[c] <= PA_VOLUME_MUTED)
1028 /* Don't update the reference ratio unless necessary */
1029 if (pa_sw_volume_multiply(
1030 o->reference_ratio.values[c],
1031 remapped.values[c]) == o->volume.values[c])
1034 o->reference_ratio.values[c] = pa_sw_volume_divide(
1035 o->volume.values[c],
1036 remapped.values[c]);
1040 /* Called from main context. Only called for the root source in volume sharing
1041 * cases, except for internal recursive calls. */
1042 static void compute_reference_ratios(pa_source *s) {
1044 pa_source_output *o;
1046 pa_source_assert_ref(s);
1047 pa_assert_ctl_context();
1048 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1049 pa_assert(pa_source_flat_volume_enabled(s));
1051 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1052 compute_reference_ratio(o);
1054 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1055 compute_reference_ratios(o->destination_source);
1059 /* Called from main context. Only called for the root source in volume sharing
1060 * cases, except for internal recursive calls. */
1061 static void compute_real_ratios(pa_source *s) {
1062 pa_source_output *o;
1065 pa_source_assert_ref(s);
1066 pa_assert_ctl_context();
1067 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1068 pa_assert(pa_source_flat_volume_enabled(s));
1070 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1072 pa_cvolume remapped;
1074 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1075 /* The origin source uses volume sharing, so this input's real ratio
1076 * is handled as a special case - the real ratio must be 0 dB, and
1077 * as a result i->soft_volume must equal i->volume_factor. */
1078 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1079 o->soft_volume = o->volume_factor;
1081 compute_real_ratios(o->destination_source);
1087 * This basically calculates:
1089 * i->real_ratio := i->volume / s->real_volume
1090 * i->soft_volume := i->real_ratio * i->volume_factor
1093 remapped = s->real_volume;
1094 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1096 o->real_ratio.channels = o->sample_spec.channels;
1097 o->soft_volume.channels = o->sample_spec.channels;
1099 for (c = 0; c < o->sample_spec.channels; c++) {
1101 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1102 /* We leave o->real_ratio untouched */
1103 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1107 /* Don't lose accuracy unless necessary */
1108 if (pa_sw_volume_multiply(
1109 o->real_ratio.values[c],
1110 remapped.values[c]) != o->volume.values[c])
1112 o->real_ratio.values[c] = pa_sw_volume_divide(
1113 o->volume.values[c],
1114 remapped.values[c]);
1116 o->soft_volume.values[c] = pa_sw_volume_multiply(
1117 o->real_ratio.values[c],
1118 o->volume_factor.values[c]);
1121 /* We don't copy the soft_volume to the thread_info data
1122 * here. That must be done by the caller */
1126 static pa_cvolume *cvolume_remap_minimal_impact(
1128 const pa_cvolume *template,
1129 const pa_channel_map *from,
1130 const pa_channel_map *to) {
1135 pa_assert(template);
1138 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1139 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1141 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1142 * mapping from source output to source volumes:
1144 * If template is a possible remapping from v it is used instead
1145 * of remapping anew.
1147 * If the channel maps don't match we set an all-channel volume on
1148 * the source to ensure that changing a volume on one stream has no
1149 * effect that cannot be compensated for in another stream that
1150 * does not have the same channel map as the source. */
1152 if (pa_channel_map_equal(from, to))
1156 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1161 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1165 /* Called from main thread. Only called for the root source in volume sharing
1166 * cases, except for internal recursive calls. */
1167 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1168 pa_source_output *o;
1171 pa_source_assert_ref(s);
1172 pa_assert(max_volume);
1173 pa_assert(channel_map);
1174 pa_assert(pa_source_flat_volume_enabled(s));
1176 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1177 pa_cvolume remapped;
1179 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1180 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1182 /* Ignore this output. The origin source uses volume sharing, so this
1183 * output's volume will be set to be equal to the root source's real
1184 * volume. Obviously this output's current volume must not then
1185 * affect what the root source's real volume will be. */
1189 remapped = o->volume;
1190 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1191 pa_cvolume_merge(max_volume, max_volume, &remapped);
1195 /* Called from main thread. Only called for the root source in volume sharing
1196 * cases, except for internal recursive calls. */
1197 static pa_bool_t has_outputs(pa_source *s) {
1198 pa_source_output *o;
1201 pa_source_assert_ref(s);
1203 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1204 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1211 /* Called from main thread. Only called for the root source in volume sharing
1212 * cases, except for internal recursive calls. */
1213 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1214 pa_source_output *o;
1217 pa_source_assert_ref(s);
1218 pa_assert(new_volume);
1219 pa_assert(channel_map);
1221 s->real_volume = *new_volume;
1222 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1224 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1225 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1226 if (pa_source_flat_volume_enabled(s)) {
1227 pa_cvolume old_volume = o->volume;
1229 /* Follow the root source's real volume. */
1230 o->volume = *new_volume;
1231 pa_cvolume_remap(&o->volume, channel_map, &o->channel_map);
1232 compute_reference_ratio(o);
1234 /* The volume changed, let's tell people so */
1235 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1236 if (o->volume_changed)
1237 o->volume_changed(o);
1239 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1243 update_real_volume(o->destination_source, new_volume, channel_map);
1248 /* Called from main thread. Only called for the root source in shared volume
1250 static void compute_real_volume(pa_source *s) {
1251 pa_source_assert_ref(s);
1252 pa_assert_ctl_context();
1253 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1254 pa_assert(pa_source_flat_volume_enabled(s));
1255 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1257 /* This determines the maximum volume of all streams and sets
1258 * s->real_volume accordingly. */
1260 if (!has_outputs(s)) {
1261 /* In the special case that we have no source outputs we leave the
1262 * volume unmodified. */
1263 update_real_volume(s, &s->reference_volume, &s->channel_map);
1267 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1269 /* First let's determine the new maximum volume of all outputs
1270 * connected to this source */
1271 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1272 update_real_volume(s, &s->real_volume, &s->channel_map);
1274 /* Then, let's update the real ratios/soft volumes of all outputs
1275 * connected to this source */
1276 compute_real_ratios(s);
1279 /* Called from main thread. Only called for the root source in shared volume
1280 * cases, except for internal recursive calls. */
1281 static void propagate_reference_volume(pa_source *s) {
1282 pa_source_output *o;
1285 pa_source_assert_ref(s);
1286 pa_assert_ctl_context();
1287 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1288 pa_assert(pa_source_flat_volume_enabled(s));
1290 /* This is called whenever the source volume changes that is not
1291 * caused by a source output volume change. We need to fix up the
1292 * source output volumes accordingly */
1294 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1295 pa_cvolume old_volume;
1297 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1298 propagate_reference_volume(o->destination_source);
1300 /* Since the origin source uses volume sharing, this output's volume
1301 * needs to be updated to match the root source's real volume, but
1302 * that will be done later in update_shared_real_volume(). */
1306 old_volume = o->volume;
1308 /* This basically calculates:
1310 * o->volume := o->reference_volume * o->reference_ratio */
1312 o->volume = s->reference_volume;
1313 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1314 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1316 /* The volume changed, let's tell people so */
1317 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1319 if (o->volume_changed)
1320 o->volume_changed(o);
1322 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1327 /* Called from main thread. Only called for the root source in volume sharing
1328 * cases, except for internal recursive calls. The return value indicates
1329 * whether any reference volume actually changed. */
1330 static pa_bool_t update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, pa_bool_t save) {
1332 pa_bool_t reference_volume_changed;
1333 pa_source_output *o;
1336 pa_source_assert_ref(s);
1337 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1339 pa_assert(channel_map);
1340 pa_assert(pa_cvolume_valid(v));
1343 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1345 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1346 s->reference_volume = volume;
1348 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1350 if (reference_volume_changed)
1351 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1352 else if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1353 /* If the root source's volume doesn't change, then there can't be any
1354 * changes in the other source in the source tree either.
1356 * It's probably theoretically possible that even if the root source's
1357 * volume changes slightly, some filter source doesn't change its volume
1358 * due to rounding errors. If that happens, we still want to propagate
1359 * the changed root source volume to the sources connected to the
1360 * intermediate source that didn't change its volume. This theoretical
1361 * possibility is the reason why we have that !(s->flags &
1362 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1363 * notice even if we returned here FALSE always if
1364 * reference_volume_changed is FALSE. */
1367 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1368 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1369 update_reference_volume(o->destination_source, v, channel_map, FALSE);
1375 /* Called from main thread */
1376 void pa_source_set_volume(
1378 const pa_cvolume *volume,
1382 pa_cvolume new_reference_volume;
1383 pa_source *root_source = s;
1385 pa_source_assert_ref(s);
1386 pa_assert_ctl_context();
1387 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1388 pa_assert(!volume || pa_cvolume_valid(volume));
1389 pa_assert(volume || pa_source_flat_volume_enabled(s));
1390 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1392 /* make sure we don't change the volume in PASSTHROUGH mode ...
1393 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1394 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1395 pa_log_warn("Cannot change volume, Source is monitor of a PASSTHROUGH sink");
1399 /* In case of volume sharing, the volume is set for the root source first,
1400 * from which it's then propagated to the sharing sources. */
1401 while (root_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
1402 root_source = root_source->output_from_master->source;
1404 /* As a special exception we accept mono volumes on all sources --
1405 * even on those with more complex channel maps */
1408 if (pa_cvolume_compatible(volume, &s->sample_spec))
1409 new_reference_volume = *volume;
1411 new_reference_volume = s->reference_volume;
1412 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1415 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1418 /* If volume is NULL we synchronize the source's real and reference
1419 * volumes with the stream volumes. If it is not NULL we update
1420 * the reference_volume with it. */
1423 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1424 if (pa_source_flat_volume_enabled(root_source)) {
1425 /* OK, propagate this volume change back to the outputs */
1426 propagate_reference_volume(root_source);
1428 /* And now recalculate the real volume */
1429 compute_real_volume(root_source);
1431 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1435 pa_assert(pa_source_flat_volume_enabled(root_source));
1437 /* Ok, let's determine the new real volume */
1438 compute_real_volume(root_source);
1440 /* Let's 'push' the reference volume if necessary */
1441 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_source->real_volume);
1442 /* If the source and it's root don't have the same number of channels, we need to remap */
1443 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1444 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1445 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1447 /* Now that the reference volume is updated, we can update the streams'
1448 * reference ratios. */
1449 compute_reference_ratios(root_source);
1452 if (root_source->set_volume) {
1453 /* If we have a function set_volume(), then we do not apply a
1454 * soft volume by default. However, set_volume() is free to
1455 * apply one to root_source->soft_volume */
1457 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1458 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1459 root_source->set_volume(root_source);
1462 /* If we have no function set_volume(), then the soft volume
1463 * becomes the real volume */
1464 root_source->soft_volume = root_source->real_volume;
1466 /* This tells the source that soft volume and/or real volume changed */
1468 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1471 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1472 * Only to be called by source implementor */
1473 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1475 pa_source_assert_ref(s);
1476 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1478 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1479 pa_source_assert_io_context(s);
1481 pa_assert_ctl_context();
1484 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1486 s->soft_volume = *volume;
1488 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1489 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1491 s->thread_info.soft_volume = s->soft_volume;
1494 /* Called from the main thread. Only called for the root source in volume sharing
1495 * cases, except for internal recursive calls. */
1496 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1497 pa_source_output *o;
1500 pa_source_assert_ref(s);
1501 pa_assert(old_real_volume);
1502 pa_assert_ctl_context();
1503 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1505 /* This is called when the hardware's real volume changes due to
1506 * some external event. We copy the real volume into our
1507 * reference volume and then rebuild the stream volumes based on
1508 * i->real_ratio which should stay fixed. */
1510 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1511 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1514 /* 1. Make the real volume the reference volume */
1515 update_reference_volume(s, &s->real_volume, &s->channel_map, TRUE);
1518 if (pa_source_flat_volume_enabled(s)) {
1520 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1521 pa_cvolume old_volume = o->volume;
1523 /* 2. Since the source's reference and real volumes are equal
1524 * now our ratios should be too. */
1525 o->reference_ratio = o->real_ratio;
1527 /* 3. Recalculate the new stream reference volume based on the
1528 * reference ratio and the sink's reference volume.
1530 * This basically calculates:
1532 * o->volume = s->reference_volume * o->reference_ratio
1534 * This is identical to propagate_reference_volume() */
1535 o->volume = s->reference_volume;
1536 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1537 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1539 /* Notify if something changed */
1540 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1542 if (o->volume_changed)
1543 o->volume_changed(o);
1545 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1548 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1549 propagate_real_volume(o->destination_source, old_real_volume);
1553 /* Something got changed in the hardware. It probably makes sense
1554 * to save changed hw settings given that hw volume changes not
1555 * triggered by PA are almost certainly done by the user. */
1556 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1557 s->save_volume = TRUE;
1560 /* Called from io thread */
1561 void pa_source_update_volume_and_mute(pa_source *s) {
1563 pa_source_assert_io_context(s);
1565 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1568 /* Called from main thread */
1569 const pa_cvolume *pa_source_get_volume(pa_source *s, pa_bool_t force_refresh) {
1570 pa_source_assert_ref(s);
1571 pa_assert_ctl_context();
1572 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1574 if (s->refresh_volume || force_refresh) {
1575 struct pa_cvolume old_real_volume;
1577 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1579 old_real_volume = s->real_volume;
1581 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1584 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1586 update_real_volume(s, &s->real_volume, &s->channel_map);
1587 propagate_real_volume(s, &old_real_volume);
1590 return &s->reference_volume;
1593 /* Called from main thread. In volume sharing cases, only the root source may
1595 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1596 pa_cvolume old_real_volume;
1598 pa_source_assert_ref(s);
1599 pa_assert_ctl_context();
1600 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1601 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1603 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1605 old_real_volume = s->real_volume;
1606 update_real_volume(s, new_real_volume, &s->channel_map);
1607 propagate_real_volume(s, &old_real_volume);
1610 /* Called from main thread */
1611 void pa_source_set_mute(pa_source *s, pa_bool_t mute, pa_bool_t save) {
1612 pa_bool_t old_muted;
1614 pa_source_assert_ref(s);
1615 pa_assert_ctl_context();
1616 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1618 old_muted = s->muted;
1620 s->save_muted = (old_muted == s->muted && s->save_muted) || save;
1622 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute)
1625 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1627 if (old_muted != s->muted)
1628 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1631 /* Called from main thread */
1632 pa_bool_t pa_source_get_mute(pa_source *s, pa_bool_t force_refresh) {
1634 pa_source_assert_ref(s);
1635 pa_assert_ctl_context();
1636 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1638 if (s->refresh_muted || force_refresh) {
1639 pa_bool_t old_muted = s->muted;
1641 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_mute)
1644 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, NULL, 0, NULL) == 0);
1646 if (old_muted != s->muted) {
1647 s->save_muted = TRUE;
1649 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1651 /* Make sure the soft mute status stays in sync */
1652 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1659 /* Called from main thread */
1660 void pa_source_mute_changed(pa_source *s, pa_bool_t new_muted) {
1661 pa_source_assert_ref(s);
1662 pa_assert_ctl_context();
1663 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1665 /* The source implementor may call this if the mute state changed to make sure everyone is notified */
1667 if (s->muted == new_muted)
1670 s->muted = new_muted;
1671 s->save_muted = TRUE;
1673 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1676 /* Called from main thread */
1677 pa_bool_t pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1678 pa_source_assert_ref(s);
1679 pa_assert_ctl_context();
1682 pa_proplist_update(s->proplist, mode, p);
1684 if (PA_SOURCE_IS_LINKED(s->state)) {
1685 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1686 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1692 /* Called from main thread */
1693 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1694 void pa_source_set_description(pa_source *s, const char *description) {
1696 pa_source_assert_ref(s);
1697 pa_assert_ctl_context();
1699 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1702 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1704 if (old && description && pa_streq(old, description))
1708 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1710 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1712 if (PA_SOURCE_IS_LINKED(s->state)) {
1713 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1714 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1718 /* Called from main thread */
1719 unsigned pa_source_linked_by(pa_source *s) {
1720 pa_source_assert_ref(s);
1721 pa_assert_ctl_context();
1722 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1724 return pa_idxset_size(s->outputs);
1727 /* Called from main thread */
1728 unsigned pa_source_used_by(pa_source *s) {
1731 pa_source_assert_ref(s);
1732 pa_assert_ctl_context();
1733 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1735 ret = pa_idxset_size(s->outputs);
1736 pa_assert(ret >= s->n_corked);
1738 return ret - s->n_corked;
1741 /* Called from main thread */
1742 unsigned pa_source_check_suspend(pa_source *s) {
1744 pa_source_output *o;
1747 pa_source_assert_ref(s);
1748 pa_assert_ctl_context();
1750 if (!PA_SOURCE_IS_LINKED(s->state))
1755 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1756 pa_source_output_state_t st;
1758 st = pa_source_output_get_state(o);
1760 /* We do not assert here. It is perfectly valid for a source output to
1761 * be in the INIT state (i.e. created, marked done but not yet put)
1762 * and we should not care if it's unlinked as it won't contribute
1763 * towards our busy status.
1765 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1768 if (st == PA_SOURCE_OUTPUT_CORKED)
1771 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
1780 /* Called from the IO thread */
1781 static void sync_output_volumes_within_thread(pa_source *s) {
1782 pa_source_output *o;
1785 pa_source_assert_ref(s);
1786 pa_source_assert_io_context(s);
1788 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1789 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
1792 o->thread_info.soft_volume = o->soft_volume;
1793 //pa_source_output_request_rewind(o, 0, TRUE, FALSE, FALSE);
1797 /* Called from the IO thread. Only called for the root source in volume sharing
1798 * cases, except for internal recursive calls. */
1799 static void set_shared_volume_within_thread(pa_source *s) {
1800 pa_source_output *o;
1803 pa_source_assert_ref(s);
1805 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
1807 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1808 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1809 set_shared_volume_within_thread(o->destination_source);
1813 /* Called from IO thread, except when it is not */
1814 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1815 pa_source *s = PA_SOURCE(object);
1816 pa_source_assert_ref(s);
1818 switch ((pa_source_message_t) code) {
1820 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
1821 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
1823 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
1825 if (o->direct_on_input) {
1826 o->thread_info.direct_on_input = o->direct_on_input;
1827 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
1830 pa_assert(!o->thread_info.attached);
1831 o->thread_info.attached = TRUE;
1836 pa_source_output_set_state_within_thread(o, o->state);
1838 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
1839 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
1841 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
1843 /* We don't just invalidate the requested latency here,
1844 * because if we are in a move we might need to fix up the
1845 * requested latency. */
1846 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
1848 /* In flat volume mode we need to update the volume as
1850 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
1853 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
1854 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
1856 pa_source_output_set_state_within_thread(o, o->state);
1861 pa_assert(o->thread_info.attached);
1862 o->thread_info.attached = FALSE;
1864 if (o->thread_info.direct_on_input) {
1865 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
1866 o->thread_info.direct_on_input = NULL;
1869 if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
1870 pa_source_output_unref(o);
1872 pa_source_invalidate_requested_latency(s, TRUE);
1874 /* In flat volume mode we need to update the volume as
1876 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
1879 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
1880 pa_source *root_source = s;
1882 while (root_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
1883 root_source = root_source->output_from_master->source;
1885 set_shared_volume_within_thread(root_source);
1889 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
1891 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
1893 pa_source_volume_change_push(s);
1895 /* Fall through ... */
1897 case PA_SOURCE_MESSAGE_SET_VOLUME:
1899 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
1900 s->thread_info.soft_volume = s->soft_volume;
1903 /* Fall through ... */
1905 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
1906 sync_output_volumes_within_thread(s);
1909 case PA_SOURCE_MESSAGE_GET_VOLUME:
1911 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
1913 pa_source_volume_change_flush(s);
1914 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
1917 /* In case source implementor reset SW volume. */
1918 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
1919 s->thread_info.soft_volume = s->soft_volume;
1924 case PA_SOURCE_MESSAGE_SET_MUTE:
1926 if (s->thread_info.soft_muted != s->muted) {
1927 s->thread_info.soft_muted = s->muted;
1930 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
1935 case PA_SOURCE_MESSAGE_GET_MUTE:
1937 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
1942 case PA_SOURCE_MESSAGE_SET_STATE: {
1944 pa_bool_t suspend_change =
1945 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
1946 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
1948 s->thread_info.state = PA_PTR_TO_UINT(userdata);
1950 if (suspend_change) {
1951 pa_source_output *o;
1954 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
1955 if (o->suspend_within_thread)
1956 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
1962 case PA_SOURCE_MESSAGE_DETACH:
1964 /* Detach all streams */
1965 pa_source_detach_within_thread(s);
1968 case PA_SOURCE_MESSAGE_ATTACH:
1970 /* Reattach all streams */
1971 pa_source_attach_within_thread(s);
1974 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
1976 pa_usec_t *usec = userdata;
1977 *usec = pa_source_get_requested_latency_within_thread(s);
1979 /* Yes, that's right, the IO thread will see -1 when no
1980 * explicit requested latency is configured, the main
1981 * thread will see max_latency */
1982 if (*usec == (pa_usec_t) -1)
1983 *usec = s->thread_info.max_latency;
1988 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
1989 pa_usec_t *r = userdata;
1991 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
1996 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
1997 pa_usec_t *r = userdata;
1999 r[0] = s->thread_info.min_latency;
2000 r[1] = s->thread_info.max_latency;
2005 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2007 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2010 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2012 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2015 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2017 *((size_t*) userdata) = s->thread_info.max_rewind;
2020 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2022 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2025 case PA_SOURCE_MESSAGE_GET_LATENCY:
2027 if (s->monitor_of) {
2028 *((pa_usec_t*) userdata) = 0;
2032 /* Implementors need to overwrite this implementation! */
2035 case PA_SOURCE_MESSAGE_SET_PORT:
2037 pa_assert(userdata);
2039 struct source_message_set_port *msg_data = userdata;
2040 msg_data->ret = s->set_port(s, msg_data->port);
2044 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2045 /* This message is sent from IO-thread and handled in main thread. */
2046 pa_assert_ctl_context();
2048 pa_source_get_volume(s, TRUE);
2049 pa_source_get_mute(s, TRUE);
2052 case PA_SOURCE_MESSAGE_MAX:
2059 /* Called from main thread */
2060 int pa_source_suspend_all(pa_core *c, pa_bool_t suspend, pa_suspend_cause_t cause) {
2065 pa_core_assert_ref(c);
2066 pa_assert_ctl_context();
2067 pa_assert(cause != 0);
2069 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2072 if (source->monitor_of)
2075 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2082 /* Called from main thread */
2083 void pa_source_detach(pa_source *s) {
2084 pa_source_assert_ref(s);
2085 pa_assert_ctl_context();
2086 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2088 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL) == 0);
2091 /* Called from main thread */
2092 void pa_source_attach(pa_source *s) {
2093 pa_source_assert_ref(s);
2094 pa_assert_ctl_context();
2095 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2097 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
2100 /* Called from IO thread */
2101 void pa_source_detach_within_thread(pa_source *s) {
2102 pa_source_output *o;
2105 pa_source_assert_ref(s);
2106 pa_source_assert_io_context(s);
2107 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2109 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2114 /* Called from IO thread */
2115 void pa_source_attach_within_thread(pa_source *s) {
2116 pa_source_output *o;
2119 pa_source_assert_ref(s);
2120 pa_source_assert_io_context(s);
2121 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2123 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2128 /* Called from IO thread */
2129 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2130 pa_usec_t result = (pa_usec_t) -1;
2131 pa_source_output *o;
2134 pa_source_assert_ref(s);
2135 pa_source_assert_io_context(s);
2137 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2138 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2140 if (s->thread_info.requested_latency_valid)
2141 return s->thread_info.requested_latency;
2143 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2144 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2145 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2146 result = o->thread_info.requested_source_latency;
2148 if (result != (pa_usec_t) -1)
2149 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2151 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2152 /* Only cache this if we are fully set up */
2153 s->thread_info.requested_latency = result;
2154 s->thread_info.requested_latency_valid = TRUE;
2160 /* Called from main thread */
2161 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2164 pa_source_assert_ref(s);
2165 pa_assert_ctl_context();
2166 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2168 if (s->state == PA_SOURCE_SUSPENDED)
2171 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2176 /* Called from IO thread */
2177 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2178 pa_source_output *o;
2181 pa_source_assert_ref(s);
2182 pa_source_assert_io_context(s);
2184 if (max_rewind == s->thread_info.max_rewind)
2187 s->thread_info.max_rewind = max_rewind;
2189 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2190 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2191 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2194 /* Called from main thread */
2195 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2196 pa_source_assert_ref(s);
2197 pa_assert_ctl_context();
2199 if (PA_SOURCE_IS_LINKED(s->state))
2200 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2202 pa_source_set_max_rewind_within_thread(s, max_rewind);
2205 /* Called from IO thread */
2206 void pa_source_invalidate_requested_latency(pa_source *s, pa_bool_t dynamic) {
2207 pa_source_output *o;
2210 pa_source_assert_ref(s);
2211 pa_source_assert_io_context(s);
2213 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2214 s->thread_info.requested_latency_valid = FALSE;
2218 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2220 if (s->update_requested_latency)
2221 s->update_requested_latency(s);
2223 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2224 if (o->update_source_requested_latency)
2225 o->update_source_requested_latency(o);
2229 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2232 /* Called from main thread */
2233 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2234 pa_source_assert_ref(s);
2235 pa_assert_ctl_context();
2237 /* min_latency == 0: no limit
2238 * min_latency anything else: specified limit
2240 * Similar for max_latency */
2242 if (min_latency < ABSOLUTE_MIN_LATENCY)
2243 min_latency = ABSOLUTE_MIN_LATENCY;
2245 if (max_latency <= 0 ||
2246 max_latency > ABSOLUTE_MAX_LATENCY)
2247 max_latency = ABSOLUTE_MAX_LATENCY;
2249 pa_assert(min_latency <= max_latency);
2251 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2252 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2253 max_latency == ABSOLUTE_MAX_LATENCY) ||
2254 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2256 if (PA_SOURCE_IS_LINKED(s->state)) {
2262 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2264 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2267 /* Called from main thread */
2268 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2269 pa_source_assert_ref(s);
2270 pa_assert_ctl_context();
2271 pa_assert(min_latency);
2272 pa_assert(max_latency);
2274 if (PA_SOURCE_IS_LINKED(s->state)) {
2275 pa_usec_t r[2] = { 0, 0 };
2277 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2279 *min_latency = r[0];
2280 *max_latency = r[1];
2282 *min_latency = s->thread_info.min_latency;
2283 *max_latency = s->thread_info.max_latency;
2287 /* Called from IO thread, and from main thread before pa_source_put() is called */
2288 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2289 pa_source_assert_ref(s);
2290 pa_source_assert_io_context(s);
2292 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2293 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2294 pa_assert(min_latency <= max_latency);
2296 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2297 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2298 max_latency == ABSOLUTE_MAX_LATENCY) ||
2299 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2302 if (s->thread_info.min_latency == min_latency &&
2303 s->thread_info.max_latency == max_latency)
2306 s->thread_info.min_latency = min_latency;
2307 s->thread_info.max_latency = max_latency;
2309 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2310 pa_source_output *o;
2313 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2314 if (o->update_source_latency_range)
2315 o->update_source_latency_range(o);
2318 pa_source_invalidate_requested_latency(s, FALSE);
2321 /* Called from main thread, before the source is put */
2322 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2323 pa_source_assert_ref(s);
2324 pa_assert_ctl_context();
2326 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2327 pa_assert(latency == 0);
2331 if (latency < ABSOLUTE_MIN_LATENCY)
2332 latency = ABSOLUTE_MIN_LATENCY;
2334 if (latency > ABSOLUTE_MAX_LATENCY)
2335 latency = ABSOLUTE_MAX_LATENCY;
2337 if (PA_SOURCE_IS_LINKED(s->state))
2338 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2340 s->thread_info.fixed_latency = latency;
2343 /* Called from main thread */
2344 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2347 pa_source_assert_ref(s);
2348 pa_assert_ctl_context();
2350 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2353 if (PA_SOURCE_IS_LINKED(s->state))
2354 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2356 latency = s->thread_info.fixed_latency;
2361 /* Called from IO thread */
2362 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2363 pa_source_assert_ref(s);
2364 pa_source_assert_io_context(s);
2366 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2367 pa_assert(latency == 0);
2371 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2372 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2374 if (s->thread_info.fixed_latency == latency)
2377 s->thread_info.fixed_latency = latency;
2379 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2380 pa_source_output *o;
2383 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2384 if (o->update_source_fixed_latency)
2385 o->update_source_fixed_latency(o);
2388 pa_source_invalidate_requested_latency(s, FALSE);
2391 /* Called from main thread */
2392 size_t pa_source_get_max_rewind(pa_source *s) {
2394 pa_assert_ctl_context();
2395 pa_source_assert_ref(s);
2397 if (!PA_SOURCE_IS_LINKED(s->state))
2398 return s->thread_info.max_rewind;
2400 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2405 /* Called from main context */
2406 int pa_source_set_port(pa_source *s, const char *name, pa_bool_t save) {
2407 pa_device_port *port;
2410 pa_source_assert_ref(s);
2411 pa_assert_ctl_context();
2414 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2415 return -PA_ERR_NOTIMPLEMENTED;
2419 return -PA_ERR_NOENTITY;
2421 if (!(port = pa_hashmap_get(s->ports, name)))
2422 return -PA_ERR_NOENTITY;
2424 if (s->active_port == port) {
2425 s->save_port = s->save_port || save;
2429 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2430 struct source_message_set_port msg = { .port = port, .ret = 0 };
2431 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2435 ret = s->set_port(s, port);
2438 return -PA_ERR_NOENTITY;
2440 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2442 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2444 s->active_port = port;
2445 s->save_port = save;
2447 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2452 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2454 /* Called from the IO thread. */
2455 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2456 pa_source_volume_change *c;
2457 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2458 c = pa_xnew(pa_source_volume_change, 1);
2460 PA_LLIST_INIT(pa_source_volume_change, c);
2462 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2466 /* Called from the IO thread. */
2467 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2469 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2473 /* Called from the IO thread. */
2474 void pa_source_volume_change_push(pa_source *s) {
2475 pa_source_volume_change *c = NULL;
2476 pa_source_volume_change *nc = NULL;
2477 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2479 const char *direction = NULL;
2482 nc = pa_source_volume_change_new(s);
2484 /* NOTE: There is already more different volumes in pa_source that I can remember.
2485 * Adding one more volume for HW would get us rid of this, but I am trying
2486 * to survive with the ones we already have. */
2487 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2489 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2490 pa_log_debug("Volume not changing");
2491 pa_source_volume_change_free(nc);
2495 nc->at = pa_source_get_latency_within_thread(s);
2496 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2498 if (s->thread_info.volume_changes_tail) {
2499 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2500 /* If volume is going up let's do it a bit late. If it is going
2501 * down let's do it a bit early. */
2502 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2503 if (nc->at + safety_margin > c->at) {
2504 nc->at += safety_margin;
2509 else if (nc->at - safety_margin > c->at) {
2510 nc->at -= safety_margin;
2518 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2519 nc->at += safety_margin;
2522 nc->at -= safety_margin;
2525 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2528 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2531 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2533 /* We can ignore volume events that came earlier but should happen later than this. */
2534 PA_LLIST_FOREACH(c, nc->next) {
2535 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2536 pa_source_volume_change_free(c);
2539 s->thread_info.volume_changes_tail = nc;
2542 /* Called from the IO thread. */
2543 static void pa_source_volume_change_flush(pa_source *s) {
2544 pa_source_volume_change *c = s->thread_info.volume_changes;
2546 s->thread_info.volume_changes = NULL;
2547 s->thread_info.volume_changes_tail = NULL;
2549 pa_source_volume_change *next = c->next;
2550 pa_source_volume_change_free(c);
2555 /* Called from the IO thread. */
2556 pa_bool_t pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2557 pa_usec_t now = pa_rtclock_now();
2558 pa_bool_t ret = FALSE;
2562 if (!PA_SOURCE_IS_LINKED(s->state)) {
2568 pa_assert(s->write_volume);
2570 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2571 pa_source_volume_change *c = s->thread_info.volume_changes;
2572 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2573 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2574 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2576 s->thread_info.current_hw_volume = c->hw_volume;
2577 pa_source_volume_change_free(c);
2580 if (s->write_volume && ret)
2583 if (s->thread_info.volume_changes) {
2585 *usec_to_next = s->thread_info.volume_changes->at - now;
2586 if (pa_log_ratelimit(PA_LOG_DEBUG))
2587 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2592 s->thread_info.volume_changes_tail = NULL;
2598 /* Called from the main thread */
2599 /* Gets the list of formats supported by the source. The members and idxset must
2600 * be freed by the caller. */
2601 pa_idxset* pa_source_get_formats(pa_source *s) {
2606 if (s->get_formats) {
2607 /* Source supports format query, all is good */
2608 ret = s->get_formats(s);
2610 /* Source doesn't support format query, so assume it does PCM */
2611 pa_format_info *f = pa_format_info_new();
2612 f->encoding = PA_ENCODING_PCM;
2614 ret = pa_idxset_new(NULL, NULL);
2615 pa_idxset_put(ret, f, NULL);
2621 /* Called from the main thread */
2622 /* Checks if the source can accept this format */
2623 pa_bool_t pa_source_check_format(pa_source *s, pa_format_info *f)
2625 pa_idxset *formats = NULL;
2626 pa_bool_t ret = FALSE;
2631 formats = pa_source_get_formats(s);
2634 pa_format_info *finfo_device;
2637 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2638 if (pa_format_info_is_compatible(finfo_device, f)) {
2644 pa_idxset_free(formats, (pa_free2_cb_t) pa_format_info_free2, NULL);
2650 /* Called from the main thread */
2651 /* Calculates the intersection between formats supported by the source and
2652 * in_formats, and returns these, in the order of the source's formats. */
2653 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2654 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2655 pa_format_info *f_source, *f_in;
2660 if (!in_formats || pa_idxset_isempty(in_formats))
2663 source_formats = pa_source_get_formats(s);
2665 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2666 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2667 if (pa_format_info_is_compatible(f_source, f_in))
2668 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2674 pa_idxset_free(source_formats, (pa_free2_cb_t) pa_format_info_free2, NULL);