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);
137 while ((p = pa_hashmap_steal_first(data->ports)))
138 pa_device_port_free(p);
140 pa_hashmap_free(data->ports, NULL, NULL);
143 pa_xfree(data->name);
144 pa_xfree(data->active_port);
147 /* Called from main context */
148 static void reset_callbacks(pa_source *s) {
152 s->get_volume = NULL;
153 s->set_volume = NULL;
154 s->write_volume = NULL;
157 s->update_requested_latency = NULL;
159 s->get_formats = NULL;
160 s->update_rate = NULL;
163 /* Called from main context */
164 pa_source* pa_source_new(
166 pa_source_new_data *data,
167 pa_source_flags_t flags) {
171 char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
176 pa_assert(data->name);
177 pa_assert_ctl_context();
179 s = pa_msgobject_new(pa_source);
181 if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
182 pa_log_debug("Failed to register name %s.", data->name);
187 pa_source_new_data_set_name(data, name);
189 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
191 pa_namereg_unregister(core, name);
195 /* FIXME, need to free s here on failure */
197 pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
198 pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
200 pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
202 if (!data->channel_map_is_set)
203 pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
205 pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
206 pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
208 /* FIXME: There should probably be a general function for checking whether
209 * the source volume is allowed to be set, like there is for source outputs. */
210 pa_assert(!data->volume_is_set || !(flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
212 if (!data->volume_is_set) {
213 pa_cvolume_reset(&data->volume, data->sample_spec.channels);
214 data->save_volume = FALSE;
217 pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
218 pa_return_null_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec));
220 if (!data->muted_is_set)
224 pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
226 pa_device_init_description(data->proplist);
227 pa_device_init_icon(data->proplist, FALSE);
228 pa_device_init_intended_roles(data->proplist);
230 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
232 pa_namereg_unregister(core, name);
236 s->parent.parent.free = source_free;
237 s->parent.process_msg = pa_source_process_msg;
240 s->state = PA_SOURCE_INIT;
243 s->suspend_cause = 0;
244 s->name = pa_xstrdup(name);
245 s->proplist = pa_proplist_copy(data->proplist);
246 s->driver = pa_xstrdup(pa_path_get_filename(data->driver));
247 s->module = data->module;
248 s->card = data->card;
250 s->priority = pa_device_init_priority(s->proplist);
252 s->sample_spec = data->sample_spec;
253 s->channel_map = data->channel_map;
254 if (data->alternate_sample_rate_is_set)
255 s->alternate_sample_rate = data->alternate_sample_rate;
257 s->alternate_sample_rate = s->core->alternate_sample_rate;
258 s->default_sample_rate = s->sample_spec.rate;
260 s->outputs = pa_idxset_new(NULL, NULL);
262 s->monitor_of = NULL;
263 s->output_from_master = NULL;
265 s->reference_volume = s->real_volume = data->volume;
266 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
267 s->base_volume = PA_VOLUME_NORM;
268 s->n_volume_steps = PA_VOLUME_NORM+1;
269 s->muted = data->muted;
270 s->refresh_volume = s->refresh_muted = FALSE;
277 /* As a minor optimization we just steal the list instead of
279 s->ports = data->ports;
282 s->active_port = NULL;
283 s->save_port = FALSE;
285 if (data->active_port && s->ports)
286 if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
287 s->save_port = data->save_port;
289 if (!s->active_port && s->ports) {
293 PA_HASHMAP_FOREACH(p, s->ports, state)
294 if (!s->active_port || p->priority > s->active_port->priority)
298 s->save_volume = data->save_volume;
299 s->save_muted = data->save_muted;
301 pa_silence_memchunk_get(
302 &core->silence_cache,
308 s->thread_info.rtpoll = NULL;
309 s->thread_info.outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
310 s->thread_info.soft_volume = s->soft_volume;
311 s->thread_info.soft_muted = s->muted;
312 s->thread_info.state = s->state;
313 s->thread_info.max_rewind = 0;
314 s->thread_info.requested_latency_valid = FALSE;
315 s->thread_info.requested_latency = 0;
316 s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
317 s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
318 s->thread_info.fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
320 PA_LLIST_HEAD_INIT(pa_source_volume_change, s->thread_info.volume_changes);
321 s->thread_info.volume_changes_tail = NULL;
322 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
323 s->thread_info.volume_change_safety_margin = core->deferred_volume_safety_margin_usec;
324 s->thread_info.volume_change_extra_delay = core->deferred_volume_extra_delay_usec;
326 /* FIXME: This should probably be moved to pa_source_put() */
327 pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
330 pa_assert_se(pa_idxset_put(s->card->sources, s, NULL) >= 0);
332 pt = pa_proplist_to_string_sep(s->proplist, "\n ");
333 pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s\n %s",
336 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
337 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
344 /* Called from main context */
345 static int source_set_state(pa_source *s, pa_source_state_t state) {
347 pa_bool_t suspend_change;
348 pa_source_state_t original_state;
351 pa_assert_ctl_context();
353 if (s->state == state)
356 original_state = s->state;
359 (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
360 (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
363 if ((ret = s->set_state(s, state)) < 0)
367 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
370 s->set_state(s, original_state);
377 if (state != PA_SOURCE_UNLINKED) { /* if we enter UNLINKED state pa_source_unlink() will fire the appropriate events */
378 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
379 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
382 if (suspend_change) {
386 /* We're suspending or resuming, tell everyone about it */
388 PA_IDXSET_FOREACH(o, s->outputs, idx)
389 if (s->state == PA_SOURCE_SUSPENDED &&
390 (o->flags & PA_SOURCE_OUTPUT_KILL_ON_SUSPEND))
391 pa_source_output_kill(o);
393 o->suspend(o, state == PA_SOURCE_SUSPENDED);
399 void pa_source_set_get_volume_callback(pa_source *s, pa_source_cb_t cb) {
405 void pa_source_set_set_volume_callback(pa_source *s, pa_source_cb_t cb) {
406 pa_source_flags_t flags;
409 pa_assert(!s->write_volume || cb);
413 /* Save the current flags so we can tell if they've changed */
417 /* The source implementor is responsible for setting decibel volume support */
418 s->flags |= PA_SOURCE_HW_VOLUME_CTRL;
420 s->flags &= ~PA_SOURCE_HW_VOLUME_CTRL;
421 /* See note below in pa_source_put() about volume sharing and decibel volumes */
422 pa_source_enable_decibel_volume(s, !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
425 /* If the flags have changed after init, let any clients know via a change event */
426 if (s->state != PA_SOURCE_INIT && flags != s->flags)
427 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
430 void pa_source_set_write_volume_callback(pa_source *s, pa_source_cb_t cb) {
431 pa_source_flags_t flags;
434 pa_assert(!cb || s->set_volume);
436 s->write_volume = cb;
438 /* Save the current flags so we can tell if they've changed */
442 s->flags |= PA_SOURCE_DEFERRED_VOLUME;
444 s->flags &= ~PA_SOURCE_DEFERRED_VOLUME;
446 /* If the flags have changed after init, let any clients know via a change event */
447 if (s->state != PA_SOURCE_INIT && flags != s->flags)
448 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
451 void pa_source_set_get_mute_callback(pa_source *s, pa_source_cb_t cb) {
457 void pa_source_set_set_mute_callback(pa_source *s, pa_source_cb_t cb) {
458 pa_source_flags_t flags;
464 /* Save the current flags so we can tell if they've changed */
468 s->flags |= PA_SOURCE_HW_MUTE_CTRL;
470 s->flags &= ~PA_SOURCE_HW_MUTE_CTRL;
472 /* If the flags have changed after init, let any clients know via a change event */
473 if (s->state != PA_SOURCE_INIT && flags != s->flags)
474 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
477 static void enable_flat_volume(pa_source *s, pa_bool_t enable) {
478 pa_source_flags_t flags;
482 /* Always follow the overall user preference here */
483 enable = enable && s->core->flat_volumes;
485 /* Save the current flags so we can tell if they've changed */
489 s->flags |= PA_SOURCE_FLAT_VOLUME;
491 s->flags &= ~PA_SOURCE_FLAT_VOLUME;
493 /* If the flags have changed after init, let any clients know via a change event */
494 if (s->state != PA_SOURCE_INIT && flags != s->flags)
495 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
498 void pa_source_enable_decibel_volume(pa_source *s, pa_bool_t enable) {
499 pa_source_flags_t flags;
503 /* Save the current flags so we can tell if they've changed */
507 s->flags |= PA_SOURCE_DECIBEL_VOLUME;
508 enable_flat_volume(s, TRUE);
510 s->flags &= ~PA_SOURCE_DECIBEL_VOLUME;
511 enable_flat_volume(s, FALSE);
514 /* If the flags have changed after init, let any clients know via a change event */
515 if (s->state != PA_SOURCE_INIT && flags != s->flags)
516 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
519 /* Called from main context */
520 void pa_source_put(pa_source *s) {
521 pa_source_assert_ref(s);
522 pa_assert_ctl_context();
524 pa_assert(s->state == PA_SOURCE_INIT);
525 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || s->output_from_master);
527 /* The following fields must be initialized properly when calling _put() */
528 pa_assert(s->asyncmsgq);
529 pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
531 /* Generally, flags should be initialized via pa_source_new(). As a
532 * special exception we allow some volume related flags to be set
533 * between _new() and _put() by the callback setter functions above.
535 * Thus we implement a couple safeguards here which ensure the above
536 * setters were used (or at least the implementor made manual changes
537 * in a compatible way).
539 * Note: All of these flags set here can change over the life time
541 pa_assert(!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) || s->set_volume);
542 pa_assert(!(s->flags & PA_SOURCE_DEFERRED_VOLUME) || s->write_volume);
543 pa_assert(!(s->flags & PA_SOURCE_HW_MUTE_CTRL) || s->set_mute);
545 /* XXX: Currently decibel volume is disabled for all sources that use volume
546 * sharing. When the master source supports decibel volume, it would be good
547 * to have the flag also in the filter source, but currently we don't do that
548 * so that the flags of the filter source never change when it's moved from
549 * a master source to another. One solution for this problem would be to
550 * remove user-visible volume altogether from filter sources when volume
551 * sharing is used, but the current approach was easier to implement... */
552 /* We always support decibel volumes in software, otherwise we leave it to
553 * the source implementor to set this flag as needed.
555 * Note: This flag can also change over the life time of the source. */
556 if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
557 pa_source_enable_decibel_volume(s, TRUE);
559 /* If the source implementor support DB volumes by itself, we should always
560 * try and enable flat volumes too */
561 if ((s->flags & PA_SOURCE_DECIBEL_VOLUME))
562 enable_flat_volume(s, TRUE);
564 if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
565 pa_source *root_source = pa_source_get_master(s);
567 pa_assert(PA_LIKELY(root_source));
569 s->reference_volume = root_source->reference_volume;
570 pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
572 s->real_volume = root_source->real_volume;
573 pa_cvolume_remap(&s->real_volume, &root_source->channel_map, &s->channel_map);
575 /* We assume that if the sink implementor changed the default
576 * volume he did so in real_volume, because that is the usual
577 * place where he is supposed to place his changes. */
578 s->reference_volume = s->real_volume;
580 s->thread_info.soft_volume = s->soft_volume;
581 s->thread_info.soft_muted = s->muted;
582 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
584 pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL)
585 || (s->base_volume == PA_VOLUME_NORM
586 && ((s->flags & PA_SOURCE_DECIBEL_VOLUME || (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)))));
587 pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
588 pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == (s->thread_info.fixed_latency != 0));
590 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
592 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
593 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
596 /* Called from main context */
597 void pa_source_unlink(pa_source *s) {
599 pa_source_output *o, *j = NULL;
602 pa_assert_ctl_context();
604 /* See pa_sink_unlink() for a couple of comments how this function
607 linked = PA_SOURCE_IS_LINKED(s->state);
610 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
612 if (s->state != PA_SOURCE_UNLINKED)
613 pa_namereg_unregister(s->core, s->name);
614 pa_idxset_remove_by_data(s->core->sources, s, NULL);
617 pa_idxset_remove_by_data(s->card->sources, s, NULL);
619 while ((o = pa_idxset_first(s->outputs, NULL))) {
621 pa_source_output_kill(o);
626 source_set_state(s, PA_SOURCE_UNLINKED);
628 s->state = PA_SOURCE_UNLINKED;
633 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
634 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
638 /* Called from main context */
639 static void source_free(pa_object *o) {
640 pa_source_output *so;
641 pa_source *s = PA_SOURCE(o);
644 pa_assert_ctl_context();
645 pa_assert(pa_source_refcnt(s) == 0);
647 if (PA_SOURCE_IS_LINKED(s->state))
650 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
652 pa_idxset_free(s->outputs, NULL, NULL);
654 while ((so = pa_hashmap_steal_first(s->thread_info.outputs)))
655 pa_source_output_unref(so);
657 pa_hashmap_free(s->thread_info.outputs, NULL, NULL);
659 if (s->silence.memblock)
660 pa_memblock_unref(s->silence.memblock);
666 pa_proplist_free(s->proplist);
671 while ((p = pa_hashmap_steal_first(s->ports)))
672 pa_device_port_free(p);
674 pa_hashmap_free(s->ports, NULL, NULL);
680 /* Called from main context, and not while the IO thread is active, please */
681 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
682 pa_source_assert_ref(s);
683 pa_assert_ctl_context();
688 /* Called from main context, and not while the IO thread is active, please */
689 void pa_source_update_flags(pa_source *s, pa_source_flags_t mask, pa_source_flags_t value) {
690 pa_source_assert_ref(s);
691 pa_assert_ctl_context();
696 /* For now, allow only a minimal set of flags to be changed. */
697 pa_assert((mask & ~(PA_SOURCE_DYNAMIC_LATENCY|PA_SOURCE_LATENCY)) == 0);
699 s->flags = (s->flags & ~mask) | (value & mask);
702 /* Called from IO context, or before _put() from main context */
703 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
704 pa_source_assert_ref(s);
705 pa_source_assert_io_context(s);
707 s->thread_info.rtpoll = p;
710 /* Called from main context */
711 int pa_source_update_status(pa_source*s) {
712 pa_source_assert_ref(s);
713 pa_assert_ctl_context();
714 pa_assert(PA_SOURCE_IS_LINKED(s->state));
716 if (s->state == PA_SOURCE_SUSPENDED)
719 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
722 /* Called from main context */
723 int pa_source_suspend(pa_source *s, pa_bool_t suspend, pa_suspend_cause_t cause) {
724 pa_source_assert_ref(s);
725 pa_assert_ctl_context();
726 pa_assert(PA_SOURCE_IS_LINKED(s->state));
727 pa_assert(cause != 0);
729 if (s->monitor_of && cause != PA_SUSPEND_PASSTHROUGH)
730 return -PA_ERR_NOTSUPPORTED;
733 s->suspend_cause |= cause;
735 s->suspend_cause &= ~cause;
737 if ((pa_source_get_state(s) == PA_SOURCE_SUSPENDED) == !!s->suspend_cause)
740 pa_log_debug("Suspend cause of source %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
742 if (s->suspend_cause)
743 return source_set_state(s, PA_SOURCE_SUSPENDED);
745 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
748 /* Called from main context */
749 int pa_source_sync_suspend(pa_source *s) {
750 pa_sink_state_t state;
752 pa_source_assert_ref(s);
753 pa_assert_ctl_context();
754 pa_assert(PA_SOURCE_IS_LINKED(s->state));
755 pa_assert(s->monitor_of);
757 state = pa_sink_get_state(s->monitor_of);
759 if (state == PA_SINK_SUSPENDED)
760 return source_set_state(s, PA_SOURCE_SUSPENDED);
762 pa_assert(PA_SINK_IS_OPENED(state));
764 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
767 /* Called from main context */
768 pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q) {
769 pa_source_output *o, *n;
772 pa_source_assert_ref(s);
773 pa_assert_ctl_context();
774 pa_assert(PA_SOURCE_IS_LINKED(s->state));
779 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = n) {
780 n = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx));
782 pa_source_output_ref(o);
784 if (pa_source_output_start_move(o) >= 0)
787 pa_source_output_unref(o);
793 /* Called from main context */
794 void pa_source_move_all_finish(pa_source *s, pa_queue *q, pa_bool_t save) {
797 pa_source_assert_ref(s);
798 pa_assert_ctl_context();
799 pa_assert(PA_SOURCE_IS_LINKED(s->state));
802 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
803 if (pa_source_output_finish_move(o, s, save) < 0)
804 pa_source_output_fail_move(o);
806 pa_source_output_unref(o);
809 pa_queue_free(q, NULL, NULL);
812 /* Called from main context */
813 void pa_source_move_all_fail(pa_queue *q) {
816 pa_assert_ctl_context();
819 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
820 pa_source_output_fail_move(o);
821 pa_source_output_unref(o);
824 pa_queue_free(q, NULL, NULL);
827 /* Called from IO thread context */
828 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
832 pa_source_assert_ref(s);
833 pa_source_assert_io_context(s);
834 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
839 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
842 pa_log_debug("Processing rewind...");
844 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
845 pa_source_output_assert_ref(o);
846 pa_source_output_process_rewind(o, nbytes);
850 /* Called from IO thread context */
851 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
855 pa_source_assert_ref(s);
856 pa_source_assert_io_context(s);
857 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
860 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
863 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
864 pa_memchunk vchunk = *chunk;
866 pa_memblock_ref(vchunk.memblock);
867 pa_memchunk_make_writable(&vchunk, 0);
869 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
870 pa_silence_memchunk(&vchunk, &s->sample_spec);
872 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
874 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
875 pa_source_output_assert_ref(o);
877 if (!o->thread_info.direct_on_input)
878 pa_source_output_push(o, &vchunk);
881 pa_memblock_unref(vchunk.memblock);
884 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
885 pa_source_output_assert_ref(o);
887 if (!o->thread_info.direct_on_input)
888 pa_source_output_push(o, chunk);
893 /* Called from IO thread context */
894 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
895 pa_source_assert_ref(s);
896 pa_source_assert_io_context(s);
897 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
898 pa_source_output_assert_ref(o);
899 pa_assert(o->thread_info.direct_on_input);
902 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
905 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
906 pa_memchunk vchunk = *chunk;
908 pa_memblock_ref(vchunk.memblock);
909 pa_memchunk_make_writable(&vchunk, 0);
911 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
912 pa_silence_memchunk(&vchunk, &s->sample_spec);
914 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
916 pa_source_output_push(o, &vchunk);
918 pa_memblock_unref(vchunk.memblock);
920 pa_source_output_push(o, chunk);
923 /* Called from main thread */
924 pa_bool_t pa_source_update_rate(pa_source *s, uint32_t rate, pa_bool_t passthrough)
926 if (s->update_rate) {
927 uint32_t desired_rate = rate;
928 uint32_t default_rate = s->default_sample_rate;
929 uint32_t alternate_rate = s->alternate_sample_rate;
930 pa_bool_t use_alternate = FALSE;
932 if (PA_SOURCE_IS_RUNNING(s->state)) {
933 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u kHz",
934 s->sample_spec.rate);
938 if (PA_UNLIKELY (desired_rate < 8000 ||
939 desired_rate > PA_RATE_MAX))
943 pa_assert(default_rate % 4000 || default_rate % 11025);
944 pa_assert(alternate_rate % 4000 || alternate_rate % 11025);
946 if (default_rate % 4000) {
947 /* default is a 11025 multiple */
948 if ((alternate_rate % 4000 == 0) && (desired_rate % 4000 == 0))
951 /* default is 4000 multiple */
952 if ((alternate_rate % 11025 == 0) && (desired_rate % 11025 == 0))
957 desired_rate = alternate_rate;
959 desired_rate = default_rate;
961 desired_rate = rate; /* use stream sampling rate, discard default/alternate settings */
964 if (passthrough || pa_source_used_by(s) == 0) {
965 pa_source_suspend(s, TRUE, PA_SUSPEND_IDLE); /* needed before rate update, will be resumed automatically */
968 if (s->update_rate(s, desired_rate) == TRUE) {
969 pa_log_info("Changed sampling rate successfully ");
976 /* Called from main thread */
977 pa_usec_t pa_source_get_latency(pa_source *s) {
980 pa_source_assert_ref(s);
981 pa_assert_ctl_context();
982 pa_assert(PA_SOURCE_IS_LINKED(s->state));
984 if (s->state == PA_SOURCE_SUSPENDED)
987 if (!(s->flags & PA_SOURCE_LATENCY))
990 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
995 /* Called from IO thread */
996 pa_usec_t pa_source_get_latency_within_thread(pa_source *s) {
1000 pa_source_assert_ref(s);
1001 pa_source_assert_io_context(s);
1002 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1004 /* The returned value is supposed to be in the time domain of the sound card! */
1006 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1009 if (!(s->flags & PA_SOURCE_LATENCY))
1012 o = PA_MSGOBJECT(s);
1014 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1016 if (o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1022 /* Called from the main thread (and also from the IO thread while the main
1023 * thread is waiting).
1025 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1026 * set. Instead, flat volume mode is detected by checking whether the root source
1027 * has the flag set. */
1028 pa_bool_t pa_source_flat_volume_enabled(pa_source *s) {
1029 pa_source_assert_ref(s);
1031 s = pa_source_get_master(s);
1034 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1039 /* Called from the main thread (and also from the IO thread while the main
1040 * thread is waiting). */
1041 pa_source *pa_source_get_master(pa_source *s) {
1042 pa_source_assert_ref(s);
1044 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1045 if (PA_UNLIKELY(!s->output_from_master))
1048 s = s->output_from_master->source;
1054 /* Called from main context */
1055 pa_bool_t pa_source_is_passthrough(pa_source *s) {
1057 pa_source_assert_ref(s);
1059 /* NB Currently only monitor sources support passthrough mode */
1060 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1063 /* Called from main context */
1064 void pa_source_enter_passthrough(pa_source *s) {
1067 /* set the volume to NORM */
1068 s->saved_volume = *pa_source_get_volume(s, TRUE);
1069 s->saved_save_volume = s->save_volume;
1071 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1072 pa_source_set_volume(s, &volume, TRUE, FALSE);
1075 /* Called from main context */
1076 void pa_source_leave_passthrough(pa_source *s) {
1077 /* Restore source volume to what it was before we entered passthrough mode */
1078 pa_source_set_volume(s, &s->saved_volume, TRUE, s->saved_save_volume);
1080 pa_cvolume_init(&s->saved_volume);
1081 s->saved_save_volume = FALSE;
1084 /* Called from main context. */
1085 static void compute_reference_ratio(pa_source_output *o) {
1087 pa_cvolume remapped;
1090 pa_assert(pa_source_flat_volume_enabled(o->source));
1093 * Calculates the reference ratio from the source's reference
1094 * volume. This basically calculates:
1096 * o->reference_ratio = o->volume / o->source->reference_volume
1099 remapped = o->source->reference_volume;
1100 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1102 o->reference_ratio.channels = o->sample_spec.channels;
1104 for (c = 0; c < o->sample_spec.channels; c++) {
1106 /* We don't update when the source volume is 0 anyway */
1107 if (remapped.values[c] <= PA_VOLUME_MUTED)
1110 /* Don't update the reference ratio unless necessary */
1111 if (pa_sw_volume_multiply(
1112 o->reference_ratio.values[c],
1113 remapped.values[c]) == o->volume.values[c])
1116 o->reference_ratio.values[c] = pa_sw_volume_divide(
1117 o->volume.values[c],
1118 remapped.values[c]);
1122 /* Called from main context. Only called for the root source in volume sharing
1123 * cases, except for internal recursive calls. */
1124 static void compute_reference_ratios(pa_source *s) {
1126 pa_source_output *o;
1128 pa_source_assert_ref(s);
1129 pa_assert_ctl_context();
1130 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1131 pa_assert(pa_source_flat_volume_enabled(s));
1133 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1134 compute_reference_ratio(o);
1136 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1137 compute_reference_ratios(o->destination_source);
1141 /* Called from main context. Only called for the root source in volume sharing
1142 * cases, except for internal recursive calls. */
1143 static void compute_real_ratios(pa_source *s) {
1144 pa_source_output *o;
1147 pa_source_assert_ref(s);
1148 pa_assert_ctl_context();
1149 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1150 pa_assert(pa_source_flat_volume_enabled(s));
1152 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1154 pa_cvolume remapped;
1156 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1157 /* The origin source uses volume sharing, so this input's real ratio
1158 * is handled as a special case - the real ratio must be 0 dB, and
1159 * as a result i->soft_volume must equal i->volume_factor. */
1160 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1161 o->soft_volume = o->volume_factor;
1163 compute_real_ratios(o->destination_source);
1169 * This basically calculates:
1171 * i->real_ratio := i->volume / s->real_volume
1172 * i->soft_volume := i->real_ratio * i->volume_factor
1175 remapped = s->real_volume;
1176 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1178 o->real_ratio.channels = o->sample_spec.channels;
1179 o->soft_volume.channels = o->sample_spec.channels;
1181 for (c = 0; c < o->sample_spec.channels; c++) {
1183 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1184 /* We leave o->real_ratio untouched */
1185 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1189 /* Don't lose accuracy unless necessary */
1190 if (pa_sw_volume_multiply(
1191 o->real_ratio.values[c],
1192 remapped.values[c]) != o->volume.values[c])
1194 o->real_ratio.values[c] = pa_sw_volume_divide(
1195 o->volume.values[c],
1196 remapped.values[c]);
1198 o->soft_volume.values[c] = pa_sw_volume_multiply(
1199 o->real_ratio.values[c],
1200 o->volume_factor.values[c]);
1203 /* We don't copy the soft_volume to the thread_info data
1204 * here. That must be done by the caller */
1208 static pa_cvolume *cvolume_remap_minimal_impact(
1210 const pa_cvolume *template,
1211 const pa_channel_map *from,
1212 const pa_channel_map *to) {
1217 pa_assert(template);
1220 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1221 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1223 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1224 * mapping from source output to source volumes:
1226 * If template is a possible remapping from v it is used instead
1227 * of remapping anew.
1229 * If the channel maps don't match we set an all-channel volume on
1230 * the source to ensure that changing a volume on one stream has no
1231 * effect that cannot be compensated for in another stream that
1232 * does not have the same channel map as the source. */
1234 if (pa_channel_map_equal(from, to))
1238 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1243 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1247 /* Called from main thread. Only called for the root source in volume sharing
1248 * cases, except for internal recursive calls. */
1249 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1250 pa_source_output *o;
1253 pa_source_assert_ref(s);
1254 pa_assert(max_volume);
1255 pa_assert(channel_map);
1256 pa_assert(pa_source_flat_volume_enabled(s));
1258 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1259 pa_cvolume remapped;
1261 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1262 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1264 /* Ignore this output. The origin source uses volume sharing, so this
1265 * output's volume will be set to be equal to the root source's real
1266 * volume. Obviously this output's current volume must not then
1267 * affect what the root source's real volume will be. */
1271 remapped = o->volume;
1272 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1273 pa_cvolume_merge(max_volume, max_volume, &remapped);
1277 /* Called from main thread. Only called for the root source in volume sharing
1278 * cases, except for internal recursive calls. */
1279 static pa_bool_t has_outputs(pa_source *s) {
1280 pa_source_output *o;
1283 pa_source_assert_ref(s);
1285 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1286 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1293 /* Called from main thread. Only called for the root source in volume sharing
1294 * cases, except for internal recursive calls. */
1295 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1296 pa_source_output *o;
1299 pa_source_assert_ref(s);
1300 pa_assert(new_volume);
1301 pa_assert(channel_map);
1303 s->real_volume = *new_volume;
1304 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1306 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1307 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1308 if (pa_source_flat_volume_enabled(s)) {
1309 pa_cvolume old_volume = o->volume;
1311 /* Follow the root source's real volume. */
1312 o->volume = *new_volume;
1313 pa_cvolume_remap(&o->volume, channel_map, &o->channel_map);
1314 compute_reference_ratio(o);
1316 /* The volume changed, let's tell people so */
1317 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1318 if (o->volume_changed)
1319 o->volume_changed(o);
1321 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1325 update_real_volume(o->destination_source, new_volume, channel_map);
1330 /* Called from main thread. Only called for the root source in shared volume
1332 static void compute_real_volume(pa_source *s) {
1333 pa_source_assert_ref(s);
1334 pa_assert_ctl_context();
1335 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1336 pa_assert(pa_source_flat_volume_enabled(s));
1337 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1339 /* This determines the maximum volume of all streams and sets
1340 * s->real_volume accordingly. */
1342 if (!has_outputs(s)) {
1343 /* In the special case that we have no source outputs we leave the
1344 * volume unmodified. */
1345 update_real_volume(s, &s->reference_volume, &s->channel_map);
1349 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1351 /* First let's determine the new maximum volume of all outputs
1352 * connected to this source */
1353 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1354 update_real_volume(s, &s->real_volume, &s->channel_map);
1356 /* Then, let's update the real ratios/soft volumes of all outputs
1357 * connected to this source */
1358 compute_real_ratios(s);
1361 /* Called from main thread. Only called for the root source in shared volume
1362 * cases, except for internal recursive calls. */
1363 static void propagate_reference_volume(pa_source *s) {
1364 pa_source_output *o;
1367 pa_source_assert_ref(s);
1368 pa_assert_ctl_context();
1369 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1370 pa_assert(pa_source_flat_volume_enabled(s));
1372 /* This is called whenever the source volume changes that is not
1373 * caused by a source output volume change. We need to fix up the
1374 * source output volumes accordingly */
1376 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1377 pa_cvolume old_volume;
1379 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1380 propagate_reference_volume(o->destination_source);
1382 /* Since the origin source uses volume sharing, this output's volume
1383 * needs to be updated to match the root source's real volume, but
1384 * that will be done later in update_shared_real_volume(). */
1388 old_volume = o->volume;
1390 /* This basically calculates:
1392 * o->volume := o->reference_volume * o->reference_ratio */
1394 o->volume = s->reference_volume;
1395 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1396 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1398 /* The volume changed, let's tell people so */
1399 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1401 if (o->volume_changed)
1402 o->volume_changed(o);
1404 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1409 /* Called from main thread. Only called for the root source in volume sharing
1410 * cases, except for internal recursive calls. The return value indicates
1411 * whether any reference volume actually changed. */
1412 static pa_bool_t update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, pa_bool_t save) {
1414 pa_bool_t reference_volume_changed;
1415 pa_source_output *o;
1418 pa_source_assert_ref(s);
1419 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1421 pa_assert(channel_map);
1422 pa_assert(pa_cvolume_valid(v));
1425 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1427 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1428 s->reference_volume = volume;
1430 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1432 if (reference_volume_changed)
1433 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1434 else if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1435 /* If the root source's volume doesn't change, then there can't be any
1436 * changes in the other source in the source tree either.
1438 * It's probably theoretically possible that even if the root source's
1439 * volume changes slightly, some filter source doesn't change its volume
1440 * due to rounding errors. If that happens, we still want to propagate
1441 * the changed root source volume to the sources connected to the
1442 * intermediate source that didn't change its volume. This theoretical
1443 * possibility is the reason why we have that !(s->flags &
1444 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1445 * notice even if we returned here FALSE always if
1446 * reference_volume_changed is FALSE. */
1449 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1450 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1451 update_reference_volume(o->destination_source, v, channel_map, FALSE);
1457 /* Called from main thread */
1458 void pa_source_set_volume(
1460 const pa_cvolume *volume,
1464 pa_cvolume new_reference_volume;
1465 pa_source *root_source;
1467 pa_source_assert_ref(s);
1468 pa_assert_ctl_context();
1469 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1470 pa_assert(!volume || pa_cvolume_valid(volume));
1471 pa_assert(volume || pa_source_flat_volume_enabled(s));
1472 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1474 /* make sure we don't change the volume in PASSTHROUGH mode ...
1475 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1476 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1477 pa_log_warn("Cannot change volume, Source is monitor of a PASSTHROUGH sink");
1481 /* In case of volume sharing, the volume is set for the root source first,
1482 * from which it's then propagated to the sharing sources. */
1483 root_source = pa_source_get_master(s);
1485 if (PA_UNLIKELY(!root_source))
1488 /* As a special exception we accept mono volumes on all sources --
1489 * even on those with more complex channel maps */
1492 if (pa_cvolume_compatible(volume, &s->sample_spec))
1493 new_reference_volume = *volume;
1495 new_reference_volume = s->reference_volume;
1496 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1499 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1502 /* If volume is NULL we synchronize the source's real and reference
1503 * volumes with the stream volumes. If it is not NULL we update
1504 * the reference_volume with it. */
1507 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1508 if (pa_source_flat_volume_enabled(root_source)) {
1509 /* OK, propagate this volume change back to the outputs */
1510 propagate_reference_volume(root_source);
1512 /* And now recalculate the real volume */
1513 compute_real_volume(root_source);
1515 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1519 pa_assert(pa_source_flat_volume_enabled(root_source));
1521 /* Ok, let's determine the new real volume */
1522 compute_real_volume(root_source);
1524 /* Let's 'push' the reference volume if necessary */
1525 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_source->real_volume);
1526 /* If the source and it's root don't have the same number of channels, we need to remap */
1527 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1528 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1529 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1531 /* Now that the reference volume is updated, we can update the streams'
1532 * reference ratios. */
1533 compute_reference_ratios(root_source);
1536 if (root_source->set_volume) {
1537 /* If we have a function set_volume(), then we do not apply a
1538 * soft volume by default. However, set_volume() is free to
1539 * apply one to root_source->soft_volume */
1541 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1542 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1543 root_source->set_volume(root_source);
1546 /* If we have no function set_volume(), then the soft volume
1547 * becomes the real volume */
1548 root_source->soft_volume = root_source->real_volume;
1550 /* This tells the source that soft volume and/or real volume changed */
1552 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1555 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1556 * Only to be called by source implementor */
1557 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1559 pa_source_assert_ref(s);
1560 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1562 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1563 pa_source_assert_io_context(s);
1565 pa_assert_ctl_context();
1568 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1570 s->soft_volume = *volume;
1572 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1573 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1575 s->thread_info.soft_volume = s->soft_volume;
1578 /* Called from the main thread. Only called for the root source in volume sharing
1579 * cases, except for internal recursive calls. */
1580 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1581 pa_source_output *o;
1584 pa_source_assert_ref(s);
1585 pa_assert(old_real_volume);
1586 pa_assert_ctl_context();
1587 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1589 /* This is called when the hardware's real volume changes due to
1590 * some external event. We copy the real volume into our
1591 * reference volume and then rebuild the stream volumes based on
1592 * i->real_ratio which should stay fixed. */
1594 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1595 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1598 /* 1. Make the real volume the reference volume */
1599 update_reference_volume(s, &s->real_volume, &s->channel_map, TRUE);
1602 if (pa_source_flat_volume_enabled(s)) {
1604 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1605 pa_cvolume old_volume = o->volume;
1607 /* 2. Since the source's reference and real volumes are equal
1608 * now our ratios should be too. */
1609 o->reference_ratio = o->real_ratio;
1611 /* 3. Recalculate the new stream reference volume based on the
1612 * reference ratio and the sink's reference volume.
1614 * This basically calculates:
1616 * o->volume = s->reference_volume * o->reference_ratio
1618 * This is identical to propagate_reference_volume() */
1619 o->volume = s->reference_volume;
1620 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1621 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1623 /* Notify if something changed */
1624 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1626 if (o->volume_changed)
1627 o->volume_changed(o);
1629 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1632 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1633 propagate_real_volume(o->destination_source, old_real_volume);
1637 /* Something got changed in the hardware. It probably makes sense
1638 * to save changed hw settings given that hw volume changes not
1639 * triggered by PA are almost certainly done by the user. */
1640 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1641 s->save_volume = TRUE;
1644 /* Called from io thread */
1645 void pa_source_update_volume_and_mute(pa_source *s) {
1647 pa_source_assert_io_context(s);
1649 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1652 /* Called from main thread */
1653 const pa_cvolume *pa_source_get_volume(pa_source *s, pa_bool_t force_refresh) {
1654 pa_source_assert_ref(s);
1655 pa_assert_ctl_context();
1656 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1658 if (s->refresh_volume || force_refresh) {
1659 struct pa_cvolume old_real_volume;
1661 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1663 old_real_volume = s->real_volume;
1665 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1668 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1670 update_real_volume(s, &s->real_volume, &s->channel_map);
1671 propagate_real_volume(s, &old_real_volume);
1674 return &s->reference_volume;
1677 /* Called from main thread. In volume sharing cases, only the root source may
1679 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1680 pa_cvolume old_real_volume;
1682 pa_source_assert_ref(s);
1683 pa_assert_ctl_context();
1684 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1685 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1687 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1689 old_real_volume = s->real_volume;
1690 update_real_volume(s, new_real_volume, &s->channel_map);
1691 propagate_real_volume(s, &old_real_volume);
1694 /* Called from main thread */
1695 void pa_source_set_mute(pa_source *s, pa_bool_t mute, pa_bool_t save) {
1696 pa_bool_t old_muted;
1698 pa_source_assert_ref(s);
1699 pa_assert_ctl_context();
1700 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1702 old_muted = s->muted;
1704 s->save_muted = (old_muted == s->muted && s->save_muted) || save;
1706 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute)
1709 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1711 if (old_muted != s->muted)
1712 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1715 /* Called from main thread */
1716 pa_bool_t pa_source_get_mute(pa_source *s, pa_bool_t force_refresh) {
1718 pa_source_assert_ref(s);
1719 pa_assert_ctl_context();
1720 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1722 if (s->refresh_muted || force_refresh) {
1723 pa_bool_t old_muted = s->muted;
1725 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_mute)
1728 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, NULL, 0, NULL) == 0);
1730 if (old_muted != s->muted) {
1731 s->save_muted = TRUE;
1733 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1735 /* Make sure the soft mute status stays in sync */
1736 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1743 /* Called from main thread */
1744 void pa_source_mute_changed(pa_source *s, pa_bool_t new_muted) {
1745 pa_source_assert_ref(s);
1746 pa_assert_ctl_context();
1747 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1749 /* The source implementor may call this if the mute state changed to make sure everyone is notified */
1751 if (s->muted == new_muted)
1754 s->muted = new_muted;
1755 s->save_muted = TRUE;
1757 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1760 /* Called from main thread */
1761 pa_bool_t pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1762 pa_source_assert_ref(s);
1763 pa_assert_ctl_context();
1766 pa_proplist_update(s->proplist, mode, p);
1768 if (PA_SOURCE_IS_LINKED(s->state)) {
1769 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1770 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1776 /* Called from main thread */
1777 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1778 void pa_source_set_description(pa_source *s, const char *description) {
1780 pa_source_assert_ref(s);
1781 pa_assert_ctl_context();
1783 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1786 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1788 if (old && description && pa_streq(old, description))
1792 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1794 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1796 if (PA_SOURCE_IS_LINKED(s->state)) {
1797 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1798 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1802 /* Called from main thread */
1803 unsigned pa_source_linked_by(pa_source *s) {
1804 pa_source_assert_ref(s);
1805 pa_assert_ctl_context();
1806 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1808 return pa_idxset_size(s->outputs);
1811 /* Called from main thread */
1812 unsigned pa_source_used_by(pa_source *s) {
1815 pa_source_assert_ref(s);
1816 pa_assert_ctl_context();
1817 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1819 ret = pa_idxset_size(s->outputs);
1820 pa_assert(ret >= s->n_corked);
1822 return ret - s->n_corked;
1825 /* Called from main thread */
1826 unsigned pa_source_check_suspend(pa_source *s) {
1828 pa_source_output *o;
1831 pa_source_assert_ref(s);
1832 pa_assert_ctl_context();
1834 if (!PA_SOURCE_IS_LINKED(s->state))
1839 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1840 pa_source_output_state_t st;
1842 st = pa_source_output_get_state(o);
1844 /* We do not assert here. It is perfectly valid for a source output to
1845 * be in the INIT state (i.e. created, marked done but not yet put)
1846 * and we should not care if it's unlinked as it won't contribute
1847 * towards our busy status.
1849 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1852 if (st == PA_SOURCE_OUTPUT_CORKED)
1855 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
1864 /* Called from the IO thread */
1865 static void sync_output_volumes_within_thread(pa_source *s) {
1866 pa_source_output *o;
1869 pa_source_assert_ref(s);
1870 pa_source_assert_io_context(s);
1872 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1873 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
1876 o->thread_info.soft_volume = o->soft_volume;
1877 //pa_source_output_request_rewind(o, 0, TRUE, FALSE, FALSE);
1881 /* Called from the IO thread. Only called for the root source in volume sharing
1882 * cases, except for internal recursive calls. */
1883 static void set_shared_volume_within_thread(pa_source *s) {
1884 pa_source_output *o;
1887 pa_source_assert_ref(s);
1889 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
1891 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1892 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1893 set_shared_volume_within_thread(o->destination_source);
1897 /* Called from IO thread, except when it is not */
1898 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1899 pa_source *s = PA_SOURCE(object);
1900 pa_source_assert_ref(s);
1902 switch ((pa_source_message_t) code) {
1904 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
1905 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
1907 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
1909 if (o->direct_on_input) {
1910 o->thread_info.direct_on_input = o->direct_on_input;
1911 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
1914 pa_assert(!o->thread_info.attached);
1915 o->thread_info.attached = TRUE;
1920 pa_source_output_set_state_within_thread(o, o->state);
1922 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
1923 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
1925 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
1927 /* We don't just invalidate the requested latency here,
1928 * because if we are in a move we might need to fix up the
1929 * requested latency. */
1930 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
1932 /* In flat volume mode we need to update the volume as
1934 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
1937 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
1938 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
1940 pa_source_output_set_state_within_thread(o, o->state);
1945 pa_assert(o->thread_info.attached);
1946 o->thread_info.attached = FALSE;
1948 if (o->thread_info.direct_on_input) {
1949 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
1950 o->thread_info.direct_on_input = NULL;
1953 if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
1954 pa_source_output_unref(o);
1956 pa_source_invalidate_requested_latency(s, TRUE);
1958 /* In flat volume mode we need to update the volume as
1960 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
1963 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
1964 pa_source *root_source = pa_source_get_master(s);
1966 if (PA_LIKELY(root_source))
1967 set_shared_volume_within_thread(root_source);
1972 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
1974 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
1976 pa_source_volume_change_push(s);
1978 /* Fall through ... */
1980 case PA_SOURCE_MESSAGE_SET_VOLUME:
1982 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
1983 s->thread_info.soft_volume = s->soft_volume;
1986 /* Fall through ... */
1988 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
1989 sync_output_volumes_within_thread(s);
1992 case PA_SOURCE_MESSAGE_GET_VOLUME:
1994 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
1996 pa_source_volume_change_flush(s);
1997 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2000 /* In case source implementor reset SW volume. */
2001 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2002 s->thread_info.soft_volume = s->soft_volume;
2007 case PA_SOURCE_MESSAGE_SET_MUTE:
2009 if (s->thread_info.soft_muted != s->muted) {
2010 s->thread_info.soft_muted = s->muted;
2013 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2018 case PA_SOURCE_MESSAGE_GET_MUTE:
2020 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2025 case PA_SOURCE_MESSAGE_SET_STATE: {
2027 pa_bool_t suspend_change =
2028 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2029 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
2031 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2033 if (suspend_change) {
2034 pa_source_output *o;
2037 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2038 if (o->suspend_within_thread)
2039 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2045 case PA_SOURCE_MESSAGE_DETACH:
2047 /* Detach all streams */
2048 pa_source_detach_within_thread(s);
2051 case PA_SOURCE_MESSAGE_ATTACH:
2053 /* Reattach all streams */
2054 pa_source_attach_within_thread(s);
2057 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2059 pa_usec_t *usec = userdata;
2060 *usec = pa_source_get_requested_latency_within_thread(s);
2062 /* Yes, that's right, the IO thread will see -1 when no
2063 * explicit requested latency is configured, the main
2064 * thread will see max_latency */
2065 if (*usec == (pa_usec_t) -1)
2066 *usec = s->thread_info.max_latency;
2071 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2072 pa_usec_t *r = userdata;
2074 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2079 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2080 pa_usec_t *r = userdata;
2082 r[0] = s->thread_info.min_latency;
2083 r[1] = s->thread_info.max_latency;
2088 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2090 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2093 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2095 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2098 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2100 *((size_t*) userdata) = s->thread_info.max_rewind;
2103 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2105 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2108 case PA_SOURCE_MESSAGE_GET_LATENCY:
2110 if (s->monitor_of) {
2111 *((pa_usec_t*) userdata) = 0;
2115 /* Implementors need to overwrite this implementation! */
2118 case PA_SOURCE_MESSAGE_SET_PORT:
2120 pa_assert(userdata);
2122 struct source_message_set_port *msg_data = userdata;
2123 msg_data->ret = s->set_port(s, msg_data->port);
2127 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2128 /* This message is sent from IO-thread and handled in main thread. */
2129 pa_assert_ctl_context();
2131 /* Make sure we're not messing with main thread when no longer linked */
2132 if (!PA_SOURCE_IS_LINKED(s->state))
2135 pa_source_get_volume(s, TRUE);
2136 pa_source_get_mute(s, TRUE);
2139 case PA_SOURCE_MESSAGE_MAX:
2146 /* Called from main thread */
2147 int pa_source_suspend_all(pa_core *c, pa_bool_t suspend, pa_suspend_cause_t cause) {
2152 pa_core_assert_ref(c);
2153 pa_assert_ctl_context();
2154 pa_assert(cause != 0);
2156 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2159 if (source->monitor_of)
2162 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2169 /* Called from main thread */
2170 void pa_source_detach(pa_source *s) {
2171 pa_source_assert_ref(s);
2172 pa_assert_ctl_context();
2173 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2175 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL) == 0);
2178 /* Called from main thread */
2179 void pa_source_attach(pa_source *s) {
2180 pa_source_assert_ref(s);
2181 pa_assert_ctl_context();
2182 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2184 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
2187 /* Called from IO thread */
2188 void pa_source_detach_within_thread(pa_source *s) {
2189 pa_source_output *o;
2192 pa_source_assert_ref(s);
2193 pa_source_assert_io_context(s);
2194 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2196 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2201 /* Called from IO thread */
2202 void pa_source_attach_within_thread(pa_source *s) {
2203 pa_source_output *o;
2206 pa_source_assert_ref(s);
2207 pa_source_assert_io_context(s);
2208 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2210 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2215 /* Called from IO thread */
2216 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2217 pa_usec_t result = (pa_usec_t) -1;
2218 pa_source_output *o;
2221 pa_source_assert_ref(s);
2222 pa_source_assert_io_context(s);
2224 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2225 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2227 if (s->thread_info.requested_latency_valid)
2228 return s->thread_info.requested_latency;
2230 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2231 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2232 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2233 result = o->thread_info.requested_source_latency;
2235 if (result != (pa_usec_t) -1)
2236 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2238 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2239 /* Only cache this if we are fully set up */
2240 s->thread_info.requested_latency = result;
2241 s->thread_info.requested_latency_valid = TRUE;
2247 /* Called from main thread */
2248 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2251 pa_source_assert_ref(s);
2252 pa_assert_ctl_context();
2253 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2255 if (s->state == PA_SOURCE_SUSPENDED)
2258 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2263 /* Called from IO thread */
2264 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2265 pa_source_output *o;
2268 pa_source_assert_ref(s);
2269 pa_source_assert_io_context(s);
2271 if (max_rewind == s->thread_info.max_rewind)
2274 s->thread_info.max_rewind = max_rewind;
2276 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2277 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2278 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2281 /* Called from main thread */
2282 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2283 pa_source_assert_ref(s);
2284 pa_assert_ctl_context();
2286 if (PA_SOURCE_IS_LINKED(s->state))
2287 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2289 pa_source_set_max_rewind_within_thread(s, max_rewind);
2292 /* Called from IO thread */
2293 void pa_source_invalidate_requested_latency(pa_source *s, pa_bool_t dynamic) {
2294 pa_source_output *o;
2297 pa_source_assert_ref(s);
2298 pa_source_assert_io_context(s);
2300 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2301 s->thread_info.requested_latency_valid = FALSE;
2305 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2307 if (s->update_requested_latency)
2308 s->update_requested_latency(s);
2310 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2311 if (o->update_source_requested_latency)
2312 o->update_source_requested_latency(o);
2316 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2319 /* Called from main thread */
2320 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2321 pa_source_assert_ref(s);
2322 pa_assert_ctl_context();
2324 /* min_latency == 0: no limit
2325 * min_latency anything else: specified limit
2327 * Similar for max_latency */
2329 if (min_latency < ABSOLUTE_MIN_LATENCY)
2330 min_latency = ABSOLUTE_MIN_LATENCY;
2332 if (max_latency <= 0 ||
2333 max_latency > ABSOLUTE_MAX_LATENCY)
2334 max_latency = ABSOLUTE_MAX_LATENCY;
2336 pa_assert(min_latency <= max_latency);
2338 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2339 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2340 max_latency == ABSOLUTE_MAX_LATENCY) ||
2341 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2343 if (PA_SOURCE_IS_LINKED(s->state)) {
2349 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2351 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2354 /* Called from main thread */
2355 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2356 pa_source_assert_ref(s);
2357 pa_assert_ctl_context();
2358 pa_assert(min_latency);
2359 pa_assert(max_latency);
2361 if (PA_SOURCE_IS_LINKED(s->state)) {
2362 pa_usec_t r[2] = { 0, 0 };
2364 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2366 *min_latency = r[0];
2367 *max_latency = r[1];
2369 *min_latency = s->thread_info.min_latency;
2370 *max_latency = s->thread_info.max_latency;
2374 /* Called from IO thread, and from main thread before pa_source_put() is called */
2375 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2376 pa_source_assert_ref(s);
2377 pa_source_assert_io_context(s);
2379 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2380 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2381 pa_assert(min_latency <= max_latency);
2383 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2384 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2385 max_latency == ABSOLUTE_MAX_LATENCY) ||
2386 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2389 if (s->thread_info.min_latency == min_latency &&
2390 s->thread_info.max_latency == max_latency)
2393 s->thread_info.min_latency = min_latency;
2394 s->thread_info.max_latency = max_latency;
2396 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2397 pa_source_output *o;
2400 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2401 if (o->update_source_latency_range)
2402 o->update_source_latency_range(o);
2405 pa_source_invalidate_requested_latency(s, FALSE);
2408 /* Called from main thread, before the source is put */
2409 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2410 pa_source_assert_ref(s);
2411 pa_assert_ctl_context();
2413 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2414 pa_assert(latency == 0);
2418 if (latency < ABSOLUTE_MIN_LATENCY)
2419 latency = ABSOLUTE_MIN_LATENCY;
2421 if (latency > ABSOLUTE_MAX_LATENCY)
2422 latency = ABSOLUTE_MAX_LATENCY;
2424 if (PA_SOURCE_IS_LINKED(s->state))
2425 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2427 s->thread_info.fixed_latency = latency;
2430 /* Called from main thread */
2431 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2434 pa_source_assert_ref(s);
2435 pa_assert_ctl_context();
2437 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2440 if (PA_SOURCE_IS_LINKED(s->state))
2441 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2443 latency = s->thread_info.fixed_latency;
2448 /* Called from IO thread */
2449 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2450 pa_source_assert_ref(s);
2451 pa_source_assert_io_context(s);
2453 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2454 pa_assert(latency == 0);
2458 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2459 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2461 if (s->thread_info.fixed_latency == latency)
2464 s->thread_info.fixed_latency = latency;
2466 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2467 pa_source_output *o;
2470 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2471 if (o->update_source_fixed_latency)
2472 o->update_source_fixed_latency(o);
2475 pa_source_invalidate_requested_latency(s, FALSE);
2478 /* Called from main thread */
2479 size_t pa_source_get_max_rewind(pa_source *s) {
2481 pa_assert_ctl_context();
2482 pa_source_assert_ref(s);
2484 if (!PA_SOURCE_IS_LINKED(s->state))
2485 return s->thread_info.max_rewind;
2487 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2492 /* Called from main context */
2493 int pa_source_set_port(pa_source *s, const char *name, pa_bool_t save) {
2494 pa_device_port *port;
2497 pa_source_assert_ref(s);
2498 pa_assert_ctl_context();
2501 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2502 return -PA_ERR_NOTIMPLEMENTED;
2506 return -PA_ERR_NOENTITY;
2508 if (!(port = pa_hashmap_get(s->ports, name)))
2509 return -PA_ERR_NOENTITY;
2511 if (s->active_port == port) {
2512 s->save_port = s->save_port || save;
2516 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2517 struct source_message_set_port msg = { .port = port, .ret = 0 };
2518 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2522 ret = s->set_port(s, port);
2525 return -PA_ERR_NOENTITY;
2527 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2529 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2531 s->active_port = port;
2532 s->save_port = save;
2534 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2539 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2541 /* Called from the IO thread. */
2542 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2543 pa_source_volume_change *c;
2544 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2545 c = pa_xnew(pa_source_volume_change, 1);
2547 PA_LLIST_INIT(pa_source_volume_change, c);
2549 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2553 /* Called from the IO thread. */
2554 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2556 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2560 /* Called from the IO thread. */
2561 void pa_source_volume_change_push(pa_source *s) {
2562 pa_source_volume_change *c = NULL;
2563 pa_source_volume_change *nc = NULL;
2564 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2566 const char *direction = NULL;
2569 nc = pa_source_volume_change_new(s);
2571 /* NOTE: There is already more different volumes in pa_source that I can remember.
2572 * Adding one more volume for HW would get us rid of this, but I am trying
2573 * to survive with the ones we already have. */
2574 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2576 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2577 pa_log_debug("Volume not changing");
2578 pa_source_volume_change_free(nc);
2582 nc->at = pa_source_get_latency_within_thread(s);
2583 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2585 if (s->thread_info.volume_changes_tail) {
2586 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2587 /* If volume is going up let's do it a bit late. If it is going
2588 * down let's do it a bit early. */
2589 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2590 if (nc->at + safety_margin > c->at) {
2591 nc->at += safety_margin;
2596 else if (nc->at - safety_margin > c->at) {
2597 nc->at -= safety_margin;
2605 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2606 nc->at += safety_margin;
2609 nc->at -= safety_margin;
2612 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2615 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2618 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2620 /* We can ignore volume events that came earlier but should happen later than this. */
2621 PA_LLIST_FOREACH(c, nc->next) {
2622 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2623 pa_source_volume_change_free(c);
2626 s->thread_info.volume_changes_tail = nc;
2629 /* Called from the IO thread. */
2630 static void pa_source_volume_change_flush(pa_source *s) {
2631 pa_source_volume_change *c = s->thread_info.volume_changes;
2633 s->thread_info.volume_changes = NULL;
2634 s->thread_info.volume_changes_tail = NULL;
2636 pa_source_volume_change *next = c->next;
2637 pa_source_volume_change_free(c);
2642 /* Called from the IO thread. */
2643 pa_bool_t pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2645 pa_bool_t ret = FALSE;
2649 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2655 pa_assert(s->write_volume);
2657 now = pa_rtclock_now();
2659 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2660 pa_source_volume_change *c = s->thread_info.volume_changes;
2661 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2662 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2663 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2665 s->thread_info.current_hw_volume = c->hw_volume;
2666 pa_source_volume_change_free(c);
2672 if (s->thread_info.volume_changes) {
2674 *usec_to_next = s->thread_info.volume_changes->at - now;
2675 if (pa_log_ratelimit(PA_LOG_DEBUG))
2676 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2681 s->thread_info.volume_changes_tail = NULL;
2687 /* Called from the main thread */
2688 /* Gets the list of formats supported by the source. The members and idxset must
2689 * be freed by the caller. */
2690 pa_idxset* pa_source_get_formats(pa_source *s) {
2695 if (s->get_formats) {
2696 /* Source supports format query, all is good */
2697 ret = s->get_formats(s);
2699 /* Source doesn't support format query, so assume it does PCM */
2700 pa_format_info *f = pa_format_info_new();
2701 f->encoding = PA_ENCODING_PCM;
2703 ret = pa_idxset_new(NULL, NULL);
2704 pa_idxset_put(ret, f, NULL);
2710 /* Called from the main thread */
2711 /* Checks if the source can accept this format */
2712 pa_bool_t pa_source_check_format(pa_source *s, pa_format_info *f)
2714 pa_idxset *formats = NULL;
2715 pa_bool_t ret = FALSE;
2720 formats = pa_source_get_formats(s);
2723 pa_format_info *finfo_device;
2726 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2727 if (pa_format_info_is_compatible(finfo_device, f)) {
2733 pa_idxset_free(formats, (pa_free2_cb_t) pa_format_info_free2, NULL);
2739 /* Called from the main thread */
2740 /* Calculates the intersection between formats supported by the source and
2741 * in_formats, and returns these, in the order of the source's formats. */
2742 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2743 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2744 pa_format_info *f_source, *f_in;
2749 if (!in_formats || pa_idxset_isempty(in_formats))
2752 source_formats = pa_source_get_formats(s);
2754 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2755 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2756 if (pa_format_info_is_compatible(f_source, f_in))
2757 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2763 pa_idxset_free(source_formats, (pa_free2_cb_t) pa_format_info_free2, NULL);