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 s->default_sample_rate = s->sample_spec.rate;
256 if (data->alternate_sample_rate_is_set)
257 s->alternate_sample_rate = data->alternate_sample_rate;
259 s->alternate_sample_rate = s->core->alternate_sample_rate;
261 if (s->sample_spec.rate == s->alternate_sample_rate) {
262 pa_log_warn("Default and alternate sample rates are the same.");
263 s->alternate_sample_rate = 0;
266 s->outputs = pa_idxset_new(NULL, NULL);
268 s->monitor_of = NULL;
269 s->output_from_master = NULL;
271 s->reference_volume = s->real_volume = data->volume;
272 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
273 s->base_volume = PA_VOLUME_NORM;
274 s->n_volume_steps = PA_VOLUME_NORM+1;
275 s->muted = data->muted;
276 s->refresh_volume = s->refresh_muted = FALSE;
283 /* As a minor optimization we just steal the list instead of
285 s->ports = data->ports;
288 s->active_port = NULL;
289 s->save_port = FALSE;
291 if (data->active_port && s->ports)
292 if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
293 s->save_port = data->save_port;
295 if (!s->active_port && s->ports) {
299 PA_HASHMAP_FOREACH(p, s->ports, state)
300 if (!s->active_port || p->priority > s->active_port->priority)
304 s->save_volume = data->save_volume;
305 s->save_muted = data->save_muted;
307 pa_silence_memchunk_get(
308 &core->silence_cache,
314 s->thread_info.rtpoll = NULL;
315 s->thread_info.outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
316 s->thread_info.soft_volume = s->soft_volume;
317 s->thread_info.soft_muted = s->muted;
318 s->thread_info.state = s->state;
319 s->thread_info.max_rewind = 0;
320 s->thread_info.requested_latency_valid = FALSE;
321 s->thread_info.requested_latency = 0;
322 s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
323 s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
324 s->thread_info.fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
326 PA_LLIST_HEAD_INIT(pa_source_volume_change, s->thread_info.volume_changes);
327 s->thread_info.volume_changes_tail = NULL;
328 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
329 s->thread_info.volume_change_safety_margin = core->deferred_volume_safety_margin_usec;
330 s->thread_info.volume_change_extra_delay = core->deferred_volume_extra_delay_usec;
332 /* FIXME: This should probably be moved to pa_source_put() */
333 pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
336 pa_assert_se(pa_idxset_put(s->card->sources, s, NULL) >= 0);
338 pt = pa_proplist_to_string_sep(s->proplist, "\n ");
339 pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s\n %s",
342 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
343 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
350 /* Called from main context */
351 static int source_set_state(pa_source *s, pa_source_state_t state) {
353 pa_bool_t suspend_change;
354 pa_source_state_t original_state;
357 pa_assert_ctl_context();
359 if (s->state == state)
362 original_state = s->state;
365 (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
366 (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
369 if ((ret = s->set_state(s, state)) < 0)
373 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
376 s->set_state(s, original_state);
383 if (state != PA_SOURCE_UNLINKED) { /* if we enter UNLINKED state pa_source_unlink() will fire the appropriate events */
384 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
385 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
388 if (suspend_change) {
392 /* We're suspending or resuming, tell everyone about it */
394 PA_IDXSET_FOREACH(o, s->outputs, idx)
395 if (s->state == PA_SOURCE_SUSPENDED &&
396 (o->flags & PA_SOURCE_OUTPUT_KILL_ON_SUSPEND))
397 pa_source_output_kill(o);
399 o->suspend(o, state == PA_SOURCE_SUSPENDED);
405 void pa_source_set_get_volume_callback(pa_source *s, pa_source_cb_t cb) {
411 void pa_source_set_set_volume_callback(pa_source *s, pa_source_cb_t cb) {
412 pa_source_flags_t flags;
415 pa_assert(!s->write_volume || cb);
419 /* Save the current flags so we can tell if they've changed */
423 /* The source implementor is responsible for setting decibel volume support */
424 s->flags |= PA_SOURCE_HW_VOLUME_CTRL;
426 s->flags &= ~PA_SOURCE_HW_VOLUME_CTRL;
427 /* See note below in pa_source_put() about volume sharing and decibel volumes */
428 pa_source_enable_decibel_volume(s, !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
431 /* If the flags have changed after init, let any clients know via a change event */
432 if (s->state != PA_SOURCE_INIT && flags != s->flags)
433 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
436 void pa_source_set_write_volume_callback(pa_source *s, pa_source_cb_t cb) {
437 pa_source_flags_t flags;
440 pa_assert(!cb || s->set_volume);
442 s->write_volume = cb;
444 /* Save the current flags so we can tell if they've changed */
448 s->flags |= PA_SOURCE_DEFERRED_VOLUME;
450 s->flags &= ~PA_SOURCE_DEFERRED_VOLUME;
452 /* If the flags have changed after init, let any clients know via a change event */
453 if (s->state != PA_SOURCE_INIT && flags != s->flags)
454 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
457 void pa_source_set_get_mute_callback(pa_source *s, pa_source_cb_t cb) {
463 void pa_source_set_set_mute_callback(pa_source *s, pa_source_cb_t cb) {
464 pa_source_flags_t flags;
470 /* Save the current flags so we can tell if they've changed */
474 s->flags |= PA_SOURCE_HW_MUTE_CTRL;
476 s->flags &= ~PA_SOURCE_HW_MUTE_CTRL;
478 /* If the flags have changed after init, let any clients know via a change event */
479 if (s->state != PA_SOURCE_INIT && flags != s->flags)
480 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
483 static void enable_flat_volume(pa_source *s, pa_bool_t enable) {
484 pa_source_flags_t flags;
488 /* Always follow the overall user preference here */
489 enable = enable && s->core->flat_volumes;
491 /* Save the current flags so we can tell if they've changed */
495 s->flags |= PA_SOURCE_FLAT_VOLUME;
497 s->flags &= ~PA_SOURCE_FLAT_VOLUME;
499 /* If the flags have changed after init, let any clients know via a change event */
500 if (s->state != PA_SOURCE_INIT && flags != s->flags)
501 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
504 void pa_source_enable_decibel_volume(pa_source *s, pa_bool_t enable) {
505 pa_source_flags_t flags;
509 /* Save the current flags so we can tell if they've changed */
513 s->flags |= PA_SOURCE_DECIBEL_VOLUME;
514 enable_flat_volume(s, TRUE);
516 s->flags &= ~PA_SOURCE_DECIBEL_VOLUME;
517 enable_flat_volume(s, FALSE);
520 /* If the flags have changed after init, let any clients know via a change event */
521 if (s->state != PA_SOURCE_INIT && flags != s->flags)
522 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
525 /* Called from main context */
526 void pa_source_put(pa_source *s) {
527 pa_source_assert_ref(s);
528 pa_assert_ctl_context();
530 pa_assert(s->state == PA_SOURCE_INIT);
531 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || s->output_from_master);
533 /* The following fields must be initialized properly when calling _put() */
534 pa_assert(s->asyncmsgq);
535 pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
537 /* Generally, flags should be initialized via pa_source_new(). As a
538 * special exception we allow some volume related flags to be set
539 * between _new() and _put() by the callback setter functions above.
541 * Thus we implement a couple safeguards here which ensure the above
542 * setters were used (or at least the implementor made manual changes
543 * in a compatible way).
545 * Note: All of these flags set here can change over the life time
547 pa_assert(!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) || s->set_volume);
548 pa_assert(!(s->flags & PA_SOURCE_DEFERRED_VOLUME) || s->write_volume);
549 pa_assert(!(s->flags & PA_SOURCE_HW_MUTE_CTRL) || s->set_mute);
551 /* XXX: Currently decibel volume is disabled for all sources that use volume
552 * sharing. When the master source supports decibel volume, it would be good
553 * to have the flag also in the filter source, but currently we don't do that
554 * so that the flags of the filter source never change when it's moved from
555 * a master source to another. One solution for this problem would be to
556 * remove user-visible volume altogether from filter sources when volume
557 * sharing is used, but the current approach was easier to implement... */
558 /* We always support decibel volumes in software, otherwise we leave it to
559 * the source implementor to set this flag as needed.
561 * Note: This flag can also change over the life time of the source. */
562 if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
563 pa_source_enable_decibel_volume(s, TRUE);
565 /* If the source implementor support DB volumes by itself, we should always
566 * try and enable flat volumes too */
567 if ((s->flags & PA_SOURCE_DECIBEL_VOLUME))
568 enable_flat_volume(s, TRUE);
570 if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
571 pa_source *root_source = pa_source_get_master(s);
573 pa_assert(PA_LIKELY(root_source));
575 s->reference_volume = root_source->reference_volume;
576 pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
578 s->real_volume = root_source->real_volume;
579 pa_cvolume_remap(&s->real_volume, &root_source->channel_map, &s->channel_map);
581 /* We assume that if the sink implementor changed the default
582 * volume he did so in real_volume, because that is the usual
583 * place where he is supposed to place his changes. */
584 s->reference_volume = s->real_volume;
586 s->thread_info.soft_volume = s->soft_volume;
587 s->thread_info.soft_muted = s->muted;
588 pa_sw_cvolume_multiply(&s->thread_info.current_hw_volume, &s->soft_volume, &s->real_volume);
590 pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL)
591 || (s->base_volume == PA_VOLUME_NORM
592 && ((s->flags & PA_SOURCE_DECIBEL_VOLUME || (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)))));
593 pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
594 pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == (s->thread_info.fixed_latency != 0));
596 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
598 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
599 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
602 /* Called from main context */
603 void pa_source_unlink(pa_source *s) {
605 pa_source_output *o, *j = NULL;
608 pa_assert_ctl_context();
610 /* See pa_sink_unlink() for a couple of comments how this function
613 linked = PA_SOURCE_IS_LINKED(s->state);
616 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
618 if (s->state != PA_SOURCE_UNLINKED)
619 pa_namereg_unregister(s->core, s->name);
620 pa_idxset_remove_by_data(s->core->sources, s, NULL);
623 pa_idxset_remove_by_data(s->card->sources, s, NULL);
625 while ((o = pa_idxset_first(s->outputs, NULL))) {
627 pa_source_output_kill(o);
632 source_set_state(s, PA_SOURCE_UNLINKED);
634 s->state = PA_SOURCE_UNLINKED;
639 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
640 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
644 /* Called from main context */
645 static void source_free(pa_object *o) {
646 pa_source_output *so;
647 pa_source *s = PA_SOURCE(o);
650 pa_assert_ctl_context();
651 pa_assert(pa_source_refcnt(s) == 0);
653 if (PA_SOURCE_IS_LINKED(s->state))
656 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
658 pa_idxset_free(s->outputs, NULL, NULL);
660 while ((so = pa_hashmap_steal_first(s->thread_info.outputs)))
661 pa_source_output_unref(so);
663 pa_hashmap_free(s->thread_info.outputs, NULL, NULL);
665 if (s->silence.memblock)
666 pa_memblock_unref(s->silence.memblock);
672 pa_proplist_free(s->proplist);
677 while ((p = pa_hashmap_steal_first(s->ports)))
678 pa_device_port_free(p);
680 pa_hashmap_free(s->ports, NULL, NULL);
686 /* Called from main context, and not while the IO thread is active, please */
687 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
688 pa_source_assert_ref(s);
689 pa_assert_ctl_context();
694 /* Called from main context, and not while the IO thread is active, please */
695 void pa_source_update_flags(pa_source *s, pa_source_flags_t mask, pa_source_flags_t value) {
696 pa_source_assert_ref(s);
697 pa_assert_ctl_context();
702 /* For now, allow only a minimal set of flags to be changed. */
703 pa_assert((mask & ~(PA_SOURCE_DYNAMIC_LATENCY|PA_SOURCE_LATENCY)) == 0);
705 s->flags = (s->flags & ~mask) | (value & mask);
708 /* Called from IO context, or before _put() from main context */
709 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
710 pa_source_assert_ref(s);
711 pa_source_assert_io_context(s);
713 s->thread_info.rtpoll = p;
716 /* Called from main context */
717 int pa_source_update_status(pa_source*s) {
718 pa_source_assert_ref(s);
719 pa_assert_ctl_context();
720 pa_assert(PA_SOURCE_IS_LINKED(s->state));
722 if (s->state == PA_SOURCE_SUSPENDED)
725 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
728 /* Called from main context */
729 int pa_source_suspend(pa_source *s, pa_bool_t suspend, pa_suspend_cause_t cause) {
730 pa_source_assert_ref(s);
731 pa_assert_ctl_context();
732 pa_assert(PA_SOURCE_IS_LINKED(s->state));
733 pa_assert(cause != 0);
735 if (s->monitor_of && cause != PA_SUSPEND_PASSTHROUGH)
736 return -PA_ERR_NOTSUPPORTED;
739 s->suspend_cause |= cause;
741 s->suspend_cause &= ~cause;
743 if ((pa_source_get_state(s) == PA_SOURCE_SUSPENDED) == !!s->suspend_cause)
746 pa_log_debug("Suspend cause of source %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
748 if (s->suspend_cause)
749 return source_set_state(s, PA_SOURCE_SUSPENDED);
751 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
754 /* Called from main context */
755 int pa_source_sync_suspend(pa_source *s) {
756 pa_sink_state_t state;
758 pa_source_assert_ref(s);
759 pa_assert_ctl_context();
760 pa_assert(PA_SOURCE_IS_LINKED(s->state));
761 pa_assert(s->monitor_of);
763 state = pa_sink_get_state(s->monitor_of);
765 if (state == PA_SINK_SUSPENDED)
766 return source_set_state(s, PA_SOURCE_SUSPENDED);
768 pa_assert(PA_SINK_IS_OPENED(state));
770 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
773 /* Called from main context */
774 pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q) {
775 pa_source_output *o, *n;
778 pa_source_assert_ref(s);
779 pa_assert_ctl_context();
780 pa_assert(PA_SOURCE_IS_LINKED(s->state));
785 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = n) {
786 n = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx));
788 pa_source_output_ref(o);
790 if (pa_source_output_start_move(o) >= 0)
793 pa_source_output_unref(o);
799 /* Called from main context */
800 void pa_source_move_all_finish(pa_source *s, pa_queue *q, pa_bool_t save) {
803 pa_source_assert_ref(s);
804 pa_assert_ctl_context();
805 pa_assert(PA_SOURCE_IS_LINKED(s->state));
808 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
809 if (pa_source_output_finish_move(o, s, save) < 0)
810 pa_source_output_fail_move(o);
812 pa_source_output_unref(o);
815 pa_queue_free(q, NULL, NULL);
818 /* Called from main context */
819 void pa_source_move_all_fail(pa_queue *q) {
822 pa_assert_ctl_context();
825 while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
826 pa_source_output_fail_move(o);
827 pa_source_output_unref(o);
830 pa_queue_free(q, NULL, NULL);
833 /* Called from IO thread context */
834 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
838 pa_source_assert_ref(s);
839 pa_source_assert_io_context(s);
840 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
845 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
848 pa_log_debug("Processing rewind...");
850 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
851 pa_source_output_assert_ref(o);
852 pa_source_output_process_rewind(o, nbytes);
856 /* Called from IO thread context */
857 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
861 pa_source_assert_ref(s);
862 pa_source_assert_io_context(s);
863 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
866 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
869 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
870 pa_memchunk vchunk = *chunk;
872 pa_memblock_ref(vchunk.memblock);
873 pa_memchunk_make_writable(&vchunk, 0);
875 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
876 pa_silence_memchunk(&vchunk, &s->sample_spec);
878 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
880 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
881 pa_source_output_assert_ref(o);
883 if (!o->thread_info.direct_on_input)
884 pa_source_output_push(o, &vchunk);
887 pa_memblock_unref(vchunk.memblock);
890 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
891 pa_source_output_assert_ref(o);
893 if (!o->thread_info.direct_on_input)
894 pa_source_output_push(o, chunk);
899 /* Called from IO thread context */
900 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
901 pa_source_assert_ref(s);
902 pa_source_assert_io_context(s);
903 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
904 pa_source_output_assert_ref(o);
905 pa_assert(o->thread_info.direct_on_input);
908 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
911 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
912 pa_memchunk vchunk = *chunk;
914 pa_memblock_ref(vchunk.memblock);
915 pa_memchunk_make_writable(&vchunk, 0);
917 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
918 pa_silence_memchunk(&vchunk, &s->sample_spec);
920 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
922 pa_source_output_push(o, &vchunk);
924 pa_memblock_unref(vchunk.memblock);
926 pa_source_output_push(o, chunk);
929 /* Called from main thread */
930 pa_bool_t pa_source_update_rate(pa_source *s, uint32_t rate, pa_bool_t passthrough)
932 if (s->update_rate) {
933 uint32_t desired_rate = rate;
934 uint32_t default_rate = s->default_sample_rate;
935 uint32_t alternate_rate = s->alternate_sample_rate;
938 pa_bool_t use_alternate = FALSE;
940 if (PA_UNLIKELY(default_rate == alternate_rate)) {
941 pa_log_warn("Default and alternate sample rates are the same.");
945 if (PA_SOURCE_IS_RUNNING(s->state)) {
946 pa_log_info("Cannot update rate, SOURCE_IS_RUNNING, will keep using %u kHz",
947 s->sample_spec.rate);
951 if (PA_UNLIKELY (desired_rate < 8000 ||
952 desired_rate > PA_RATE_MAX))
956 pa_assert(default_rate % 4000 || default_rate % 11025);
957 pa_assert(alternate_rate % 4000 || alternate_rate % 11025);
959 if (default_rate % 4000) {
960 /* default is a 11025 multiple */
961 if ((alternate_rate % 4000 == 0) && (desired_rate % 4000 == 0))
964 /* default is 4000 multiple */
965 if ((alternate_rate % 11025 == 0) && (desired_rate % 11025 == 0))
970 desired_rate = alternate_rate;
972 desired_rate = default_rate;
974 desired_rate = rate; /* use stream sampling rate, discard default/alternate settings */
977 if (!passthrough && pa_source_used_by(s) > 0)
980 pa_source_suspend(s, TRUE, PA_SUSPEND_IDLE); /* needed before rate update, will be resumed automatically */
982 if (s->update_rate(s, desired_rate) == TRUE) {
983 pa_log_info("Changed sampling rate successfully ");
985 PA_IDXSET_FOREACH(o, s->outputs, idx) {
986 if (o->state == PA_SOURCE_OUTPUT_CORKED)
987 pa_source_output_update_rate(o);
995 /* Called from main thread */
996 pa_usec_t pa_source_get_latency(pa_source *s) {
999 pa_source_assert_ref(s);
1000 pa_assert_ctl_context();
1001 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1003 if (s->state == PA_SOURCE_SUSPENDED)
1006 if (!(s->flags & PA_SOURCE_LATENCY))
1009 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1014 /* Called from IO thread */
1015 pa_usec_t pa_source_get_latency_within_thread(pa_source *s) {
1019 pa_source_assert_ref(s);
1020 pa_source_assert_io_context(s);
1021 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
1023 /* The returned value is supposed to be in the time domain of the sound card! */
1025 if (s->thread_info.state == PA_SOURCE_SUSPENDED)
1028 if (!(s->flags & PA_SOURCE_LATENCY))
1031 o = PA_MSGOBJECT(s);
1033 /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1035 if (o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1041 /* Called from the main thread (and also from the IO thread while the main
1042 * thread is waiting).
1044 * When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
1045 * set. Instead, flat volume mode is detected by checking whether the root source
1046 * has the flag set. */
1047 pa_bool_t pa_source_flat_volume_enabled(pa_source *s) {
1048 pa_source_assert_ref(s);
1050 s = pa_source_get_master(s);
1053 return (s->flags & PA_SOURCE_FLAT_VOLUME);
1058 /* Called from the main thread (and also from the IO thread while the main
1059 * thread is waiting). */
1060 pa_source *pa_source_get_master(pa_source *s) {
1061 pa_source_assert_ref(s);
1063 while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1064 if (PA_UNLIKELY(!s->output_from_master))
1067 s = s->output_from_master->source;
1073 /* Called from main context */
1074 pa_bool_t pa_source_is_passthrough(pa_source *s) {
1076 pa_source_assert_ref(s);
1078 /* NB Currently only monitor sources support passthrough mode */
1079 return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
1082 /* Called from main context */
1083 void pa_source_enter_passthrough(pa_source *s) {
1086 /* set the volume to NORM */
1087 s->saved_volume = *pa_source_get_volume(s, TRUE);
1088 s->saved_save_volume = s->save_volume;
1090 pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
1091 pa_source_set_volume(s, &volume, TRUE, FALSE);
1094 /* Called from main context */
1095 void pa_source_leave_passthrough(pa_source *s) {
1096 /* Restore source volume to what it was before we entered passthrough mode */
1097 pa_source_set_volume(s, &s->saved_volume, TRUE, s->saved_save_volume);
1099 pa_cvolume_init(&s->saved_volume);
1100 s->saved_save_volume = FALSE;
1103 /* Called from main context. */
1104 static void compute_reference_ratio(pa_source_output *o) {
1106 pa_cvolume remapped;
1109 pa_assert(pa_source_flat_volume_enabled(o->source));
1112 * Calculates the reference ratio from the source's reference
1113 * volume. This basically calculates:
1115 * o->reference_ratio = o->volume / o->source->reference_volume
1118 remapped = o->source->reference_volume;
1119 pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
1121 o->reference_ratio.channels = o->sample_spec.channels;
1123 for (c = 0; c < o->sample_spec.channels; c++) {
1125 /* We don't update when the source volume is 0 anyway */
1126 if (remapped.values[c] <= PA_VOLUME_MUTED)
1129 /* Don't update the reference ratio unless necessary */
1130 if (pa_sw_volume_multiply(
1131 o->reference_ratio.values[c],
1132 remapped.values[c]) == o->volume.values[c])
1135 o->reference_ratio.values[c] = pa_sw_volume_divide(
1136 o->volume.values[c],
1137 remapped.values[c]);
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_reference_ratios(pa_source *s) {
1145 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) {
1153 compute_reference_ratio(o);
1155 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1156 compute_reference_ratios(o->destination_source);
1160 /* Called from main context. Only called for the root source in volume sharing
1161 * cases, except for internal recursive calls. */
1162 static void compute_real_ratios(pa_source *s) {
1163 pa_source_output *o;
1166 pa_source_assert_ref(s);
1167 pa_assert_ctl_context();
1168 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1169 pa_assert(pa_source_flat_volume_enabled(s));
1171 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1173 pa_cvolume remapped;
1175 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1176 /* The origin source uses volume sharing, so this input's real ratio
1177 * is handled as a special case - the real ratio must be 0 dB, and
1178 * as a result i->soft_volume must equal i->volume_factor. */
1179 pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
1180 o->soft_volume = o->volume_factor;
1182 compute_real_ratios(o->destination_source);
1188 * This basically calculates:
1190 * i->real_ratio := i->volume / s->real_volume
1191 * i->soft_volume := i->real_ratio * i->volume_factor
1194 remapped = s->real_volume;
1195 pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
1197 o->real_ratio.channels = o->sample_spec.channels;
1198 o->soft_volume.channels = o->sample_spec.channels;
1200 for (c = 0; c < o->sample_spec.channels; c++) {
1202 if (remapped.values[c] <= PA_VOLUME_MUTED) {
1203 /* We leave o->real_ratio untouched */
1204 o->soft_volume.values[c] = PA_VOLUME_MUTED;
1208 /* Don't lose accuracy unless necessary */
1209 if (pa_sw_volume_multiply(
1210 o->real_ratio.values[c],
1211 remapped.values[c]) != o->volume.values[c])
1213 o->real_ratio.values[c] = pa_sw_volume_divide(
1214 o->volume.values[c],
1215 remapped.values[c]);
1217 o->soft_volume.values[c] = pa_sw_volume_multiply(
1218 o->real_ratio.values[c],
1219 o->volume_factor.values[c]);
1222 /* We don't copy the soft_volume to the thread_info data
1223 * here. That must be done by the caller */
1227 static pa_cvolume *cvolume_remap_minimal_impact(
1229 const pa_cvolume *template,
1230 const pa_channel_map *from,
1231 const pa_channel_map *to) {
1236 pa_assert(template);
1239 pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
1240 pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
1242 /* Much like pa_cvolume_remap(), but tries to minimize impact when
1243 * mapping from source output to source volumes:
1245 * If template is a possible remapping from v it is used instead
1246 * of remapping anew.
1248 * If the channel maps don't match we set an all-channel volume on
1249 * the source to ensure that changing a volume on one stream has no
1250 * effect that cannot be compensated for in another stream that
1251 * does not have the same channel map as the source. */
1253 if (pa_channel_map_equal(from, to))
1257 if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1262 pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1266 /* Called from main thread. Only called for the root source in volume sharing
1267 * cases, except for internal recursive calls. */
1268 static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
1269 pa_source_output *o;
1272 pa_source_assert_ref(s);
1273 pa_assert(max_volume);
1274 pa_assert(channel_map);
1275 pa_assert(pa_source_flat_volume_enabled(s));
1277 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1278 pa_cvolume remapped;
1280 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1281 get_maximum_output_volume(o->destination_source, max_volume, channel_map);
1283 /* Ignore this output. The origin source uses volume sharing, so this
1284 * output's volume will be set to be equal to the root source's real
1285 * volume. Obviously this output's current volume must not then
1286 * affect what the root source's real volume will be. */
1290 remapped = o->volume;
1291 cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
1292 pa_cvolume_merge(max_volume, max_volume, &remapped);
1296 /* Called from main thread. Only called for the root source in volume sharing
1297 * cases, except for internal recursive calls. */
1298 static pa_bool_t has_outputs(pa_source *s) {
1299 pa_source_output *o;
1302 pa_source_assert_ref(s);
1304 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1305 if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
1312 /* Called from main thread. Only called for the root source in volume sharing
1313 * cases, except for internal recursive calls. */
1314 static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
1315 pa_source_output *o;
1318 pa_source_assert_ref(s);
1319 pa_assert(new_volume);
1320 pa_assert(channel_map);
1322 s->real_volume = *new_volume;
1323 pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
1325 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1326 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1327 if (pa_source_flat_volume_enabled(s)) {
1328 pa_cvolume old_volume = o->volume;
1330 /* Follow the root source's real volume. */
1331 o->volume = *new_volume;
1332 pa_cvolume_remap(&o->volume, channel_map, &o->channel_map);
1333 compute_reference_ratio(o);
1335 /* The volume changed, let's tell people so */
1336 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1337 if (o->volume_changed)
1338 o->volume_changed(o);
1340 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1344 update_real_volume(o->destination_source, new_volume, channel_map);
1349 /* Called from main thread. Only called for the root source in shared volume
1351 static void compute_real_volume(pa_source *s) {
1352 pa_source_assert_ref(s);
1353 pa_assert_ctl_context();
1354 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1355 pa_assert(pa_source_flat_volume_enabled(s));
1356 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1358 /* This determines the maximum volume of all streams and sets
1359 * s->real_volume accordingly. */
1361 if (!has_outputs(s)) {
1362 /* In the special case that we have no source outputs we leave the
1363 * volume unmodified. */
1364 update_real_volume(s, &s->reference_volume, &s->channel_map);
1368 pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1370 /* First let's determine the new maximum volume of all outputs
1371 * connected to this source */
1372 get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
1373 update_real_volume(s, &s->real_volume, &s->channel_map);
1375 /* Then, let's update the real ratios/soft volumes of all outputs
1376 * connected to this source */
1377 compute_real_ratios(s);
1380 /* Called from main thread. Only called for the root source in shared volume
1381 * cases, except for internal recursive calls. */
1382 static void propagate_reference_volume(pa_source *s) {
1383 pa_source_output *o;
1386 pa_source_assert_ref(s);
1387 pa_assert_ctl_context();
1388 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1389 pa_assert(pa_source_flat_volume_enabled(s));
1391 /* This is called whenever the source volume changes that is not
1392 * caused by a source output volume change. We need to fix up the
1393 * source output volumes accordingly */
1395 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1396 pa_cvolume old_volume;
1398 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1399 propagate_reference_volume(o->destination_source);
1401 /* Since the origin source uses volume sharing, this output's volume
1402 * needs to be updated to match the root source's real volume, but
1403 * that will be done later in update_shared_real_volume(). */
1407 old_volume = o->volume;
1409 /* This basically calculates:
1411 * o->volume := o->reference_volume * o->reference_ratio */
1413 o->volume = s->reference_volume;
1414 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1415 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1417 /* The volume changed, let's tell people so */
1418 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1420 if (o->volume_changed)
1421 o->volume_changed(o);
1423 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1428 /* Called from main thread. Only called for the root source in volume sharing
1429 * cases, except for internal recursive calls. The return value indicates
1430 * whether any reference volume actually changed. */
1431 static pa_bool_t update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, pa_bool_t save) {
1433 pa_bool_t reference_volume_changed;
1434 pa_source_output *o;
1437 pa_source_assert_ref(s);
1438 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1440 pa_assert(channel_map);
1441 pa_assert(pa_cvolume_valid(v));
1444 pa_cvolume_remap(&volume, channel_map, &s->channel_map);
1446 reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
1447 s->reference_volume = volume;
1449 s->save_volume = (!reference_volume_changed && s->save_volume) || save;
1451 if (reference_volume_changed)
1452 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1453 else if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1454 /* If the root source's volume doesn't change, then there can't be any
1455 * changes in the other source in the source tree either.
1457 * It's probably theoretically possible that even if the root source's
1458 * volume changes slightly, some filter source doesn't change its volume
1459 * due to rounding errors. If that happens, we still want to propagate
1460 * the changed root source volume to the sources connected to the
1461 * intermediate source that didn't change its volume. This theoretical
1462 * possibility is the reason why we have that !(s->flags &
1463 * PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
1464 * notice even if we returned here FALSE always if
1465 * reference_volume_changed is FALSE. */
1468 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1469 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1470 update_reference_volume(o->destination_source, v, channel_map, FALSE);
1476 /* Called from main thread */
1477 void pa_source_set_volume(
1479 const pa_cvolume *volume,
1483 pa_cvolume new_reference_volume;
1484 pa_source *root_source;
1486 pa_source_assert_ref(s);
1487 pa_assert_ctl_context();
1488 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1489 pa_assert(!volume || pa_cvolume_valid(volume));
1490 pa_assert(volume || pa_source_flat_volume_enabled(s));
1491 pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1493 /* make sure we don't change the volume in PASSTHROUGH mode ...
1494 * ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
1495 if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
1496 pa_log_warn("Cannot change volume, Source is monitor of a PASSTHROUGH sink");
1500 /* In case of volume sharing, the volume is set for the root source first,
1501 * from which it's then propagated to the sharing sources. */
1502 root_source = pa_source_get_master(s);
1504 if (PA_UNLIKELY(!root_source))
1507 /* As a special exception we accept mono volumes on all sources --
1508 * even on those with more complex channel maps */
1511 if (pa_cvolume_compatible(volume, &s->sample_spec))
1512 new_reference_volume = *volume;
1514 new_reference_volume = s->reference_volume;
1515 pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
1518 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1520 if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
1521 if (pa_source_flat_volume_enabled(root_source)) {
1522 /* OK, propagate this volume change back to the outputs */
1523 propagate_reference_volume(root_source);
1525 /* And now recalculate the real volume */
1526 compute_real_volume(root_source);
1528 update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
1532 /* If volume is NULL we synchronize the source's real and
1533 * reference volumes with the stream volumes. */
1535 pa_assert(pa_source_flat_volume_enabled(root_source));
1537 /* Ok, let's determine the new real volume */
1538 compute_real_volume(root_source);
1540 /* Let's 'push' the reference volume if necessary */
1541 pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_source->real_volume);
1542 /* If the source and it's root don't have the same number of channels, we need to remap */
1543 if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
1544 pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
1545 update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
1547 /* Now that the reference volume is updated, we can update the streams'
1548 * reference ratios. */
1549 compute_reference_ratios(root_source);
1552 if (root_source->set_volume) {
1553 /* If we have a function set_volume(), then we do not apply a
1554 * soft volume by default. However, set_volume() is free to
1555 * apply one to root_source->soft_volume */
1557 pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
1558 if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
1559 root_source->set_volume(root_source);
1562 /* If we have no function set_volume(), then the soft volume
1563 * becomes the real volume */
1564 root_source->soft_volume = root_source->real_volume;
1566 /* This tells the source that soft volume and/or real volume changed */
1568 pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
1571 /* Called from the io thread if sync volume is used, otherwise from the main thread.
1572 * Only to be called by source implementor */
1573 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
1575 pa_source_assert_ref(s);
1576 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1578 if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
1579 pa_source_assert_io_context(s);
1581 pa_assert_ctl_context();
1584 pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1586 s->soft_volume = *volume;
1588 if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
1589 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1591 s->thread_info.soft_volume = s->soft_volume;
1594 /* Called from the main thread. Only called for the root source in volume sharing
1595 * cases, except for internal recursive calls. */
1596 static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
1597 pa_source_output *o;
1600 pa_source_assert_ref(s);
1601 pa_assert(old_real_volume);
1602 pa_assert_ctl_context();
1603 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1605 /* This is called when the hardware's real volume changes due to
1606 * some external event. We copy the real volume into our
1607 * reference volume and then rebuild the stream volumes based on
1608 * i->real_ratio which should stay fixed. */
1610 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1611 if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1614 /* 1. Make the real volume the reference volume */
1615 update_reference_volume(s, &s->real_volume, &s->channel_map, TRUE);
1618 if (pa_source_flat_volume_enabled(s)) {
1620 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1621 pa_cvolume old_volume = o->volume;
1623 /* 2. Since the source's reference and real volumes are equal
1624 * now our ratios should be too. */
1625 o->reference_ratio = o->real_ratio;
1627 /* 3. Recalculate the new stream reference volume based on the
1628 * reference ratio and the sink's reference volume.
1630 * This basically calculates:
1632 * o->volume = s->reference_volume * o->reference_ratio
1634 * This is identical to propagate_reference_volume() */
1635 o->volume = s->reference_volume;
1636 pa_cvolume_remap(&o->volume, &s->channel_map, &o->channel_map);
1637 pa_sw_cvolume_multiply(&o->volume, &o->volume, &o->reference_ratio);
1639 /* Notify if something changed */
1640 if (!pa_cvolume_equal(&old_volume, &o->volume)) {
1642 if (o->volume_changed)
1643 o->volume_changed(o);
1645 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1648 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1649 propagate_real_volume(o->destination_source, old_real_volume);
1653 /* Something got changed in the hardware. It probably makes sense
1654 * to save changed hw settings given that hw volume changes not
1655 * triggered by PA are almost certainly done by the user. */
1656 if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1657 s->save_volume = TRUE;
1660 /* Called from io thread */
1661 void pa_source_update_volume_and_mute(pa_source *s) {
1663 pa_source_assert_io_context(s);
1665 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
1668 /* Called from main thread */
1669 const pa_cvolume *pa_source_get_volume(pa_source *s, pa_bool_t force_refresh) {
1670 pa_source_assert_ref(s);
1671 pa_assert_ctl_context();
1672 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1674 if (s->refresh_volume || force_refresh) {
1675 struct pa_cvolume old_real_volume;
1677 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1679 old_real_volume = s->real_volume;
1681 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
1684 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1686 update_real_volume(s, &s->real_volume, &s->channel_map);
1687 propagate_real_volume(s, &old_real_volume);
1690 return &s->reference_volume;
1693 /* Called from main thread. In volume sharing cases, only the root source may
1695 void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
1696 pa_cvolume old_real_volume;
1698 pa_source_assert_ref(s);
1699 pa_assert_ctl_context();
1700 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1701 pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
1703 /* The source implementor may call this if the volume changed to make sure everyone is notified */
1705 old_real_volume = s->real_volume;
1706 update_real_volume(s, new_real_volume, &s->channel_map);
1707 propagate_real_volume(s, &old_real_volume);
1710 /* Called from main thread */
1711 void pa_source_set_mute(pa_source *s, pa_bool_t mute, pa_bool_t save) {
1712 pa_bool_t old_muted;
1714 pa_source_assert_ref(s);
1715 pa_assert_ctl_context();
1716 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1718 old_muted = s->muted;
1720 s->save_muted = (old_muted == s->muted && s->save_muted) || save;
1722 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute)
1725 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1727 if (old_muted != s->muted)
1728 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1731 /* Called from main thread */
1732 pa_bool_t pa_source_get_mute(pa_source *s, pa_bool_t force_refresh) {
1734 pa_source_assert_ref(s);
1735 pa_assert_ctl_context();
1736 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1738 if (s->refresh_muted || force_refresh) {
1739 pa_bool_t old_muted = s->muted;
1741 if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_mute)
1744 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, NULL, 0, NULL) == 0);
1746 if (old_muted != s->muted) {
1747 s->save_muted = TRUE;
1749 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1751 /* Make sure the soft mute status stays in sync */
1752 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1759 /* Called from main thread */
1760 void pa_source_mute_changed(pa_source *s, pa_bool_t new_muted) {
1761 pa_source_assert_ref(s);
1762 pa_assert_ctl_context();
1763 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1765 /* The source implementor may call this if the mute state changed to make sure everyone is notified */
1767 if (s->muted == new_muted)
1770 s->muted = new_muted;
1771 s->save_muted = TRUE;
1773 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1776 /* Called from main thread */
1777 pa_bool_t pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
1778 pa_source_assert_ref(s);
1779 pa_assert_ctl_context();
1782 pa_proplist_update(s->proplist, mode, p);
1784 if (PA_SOURCE_IS_LINKED(s->state)) {
1785 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1786 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1792 /* Called from main thread */
1793 /* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
1794 void pa_source_set_description(pa_source *s, const char *description) {
1796 pa_source_assert_ref(s);
1797 pa_assert_ctl_context();
1799 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1802 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1804 if (old && description && pa_streq(old, description))
1808 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1810 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1812 if (PA_SOURCE_IS_LINKED(s->state)) {
1813 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1814 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
1818 /* Called from main thread */
1819 unsigned pa_source_linked_by(pa_source *s) {
1820 pa_source_assert_ref(s);
1821 pa_assert_ctl_context();
1822 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1824 return pa_idxset_size(s->outputs);
1827 /* Called from main thread */
1828 unsigned pa_source_used_by(pa_source *s) {
1831 pa_source_assert_ref(s);
1832 pa_assert_ctl_context();
1833 pa_assert(PA_SOURCE_IS_LINKED(s->state));
1835 ret = pa_idxset_size(s->outputs);
1836 pa_assert(ret >= s->n_corked);
1838 return ret - s->n_corked;
1841 /* Called from main thread */
1842 unsigned pa_source_check_suspend(pa_source *s) {
1844 pa_source_output *o;
1847 pa_source_assert_ref(s);
1848 pa_assert_ctl_context();
1850 if (!PA_SOURCE_IS_LINKED(s->state))
1855 PA_IDXSET_FOREACH(o, s->outputs, idx) {
1856 pa_source_output_state_t st;
1858 st = pa_source_output_get_state(o);
1860 /* We do not assert here. It is perfectly valid for a source output to
1861 * be in the INIT state (i.e. created, marked done but not yet put)
1862 * and we should not care if it's unlinked as it won't contribute
1863 * towards our busy status.
1865 if (!PA_SOURCE_OUTPUT_IS_LINKED(st))
1868 if (st == PA_SOURCE_OUTPUT_CORKED)
1871 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
1880 /* Called from the IO thread */
1881 static void sync_output_volumes_within_thread(pa_source *s) {
1882 pa_source_output *o;
1885 pa_source_assert_ref(s);
1886 pa_source_assert_io_context(s);
1888 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1889 if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
1892 o->thread_info.soft_volume = o->soft_volume;
1893 //pa_source_output_request_rewind(o, 0, TRUE, FALSE, FALSE);
1897 /* Called from the IO thread. Only called for the root source in volume sharing
1898 * cases, except for internal recursive calls. */
1899 static void set_shared_volume_within_thread(pa_source *s) {
1900 pa_source_output *o;
1903 pa_source_assert_ref(s);
1905 PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
1907 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
1908 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
1909 set_shared_volume_within_thread(o->destination_source);
1913 /* Called from IO thread, except when it is not */
1914 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1915 pa_source *s = PA_SOURCE(object);
1916 pa_source_assert_ref(s);
1918 switch ((pa_source_message_t) code) {
1920 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
1921 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
1923 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
1925 if (o->direct_on_input) {
1926 o->thread_info.direct_on_input = o->direct_on_input;
1927 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
1930 pa_assert(!o->thread_info.attached);
1931 o->thread_info.attached = TRUE;
1936 pa_source_output_set_state_within_thread(o, o->state);
1938 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
1939 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
1941 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
1943 /* We don't just invalidate the requested latency here,
1944 * because if we are in a move we might need to fix up the
1945 * requested latency. */
1946 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
1948 /* In flat volume mode we need to update the volume as
1950 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
1953 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
1954 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
1956 pa_source_output_set_state_within_thread(o, o->state);
1961 pa_assert(o->thread_info.attached);
1962 o->thread_info.attached = FALSE;
1964 if (o->thread_info.direct_on_input) {
1965 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
1966 o->thread_info.direct_on_input = NULL;
1969 if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
1970 pa_source_output_unref(o);
1972 pa_source_invalidate_requested_latency(s, TRUE);
1974 /* In flat volume mode we need to update the volume as
1976 return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
1979 case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
1980 pa_source *root_source = pa_source_get_master(s);
1982 if (PA_LIKELY(root_source))
1983 set_shared_volume_within_thread(root_source);
1988 case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
1990 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
1992 pa_source_volume_change_push(s);
1994 /* Fall through ... */
1996 case PA_SOURCE_MESSAGE_SET_VOLUME:
1998 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
1999 s->thread_info.soft_volume = s->soft_volume;
2002 /* Fall through ... */
2004 case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
2005 sync_output_volumes_within_thread(s);
2008 case PA_SOURCE_MESSAGE_GET_VOLUME:
2010 if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
2012 pa_source_volume_change_flush(s);
2013 pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
2016 /* In case source implementor reset SW volume. */
2017 if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
2018 s->thread_info.soft_volume = s->soft_volume;
2023 case PA_SOURCE_MESSAGE_SET_MUTE:
2025 if (s->thread_info.soft_muted != s->muted) {
2026 s->thread_info.soft_muted = s->muted;
2029 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
2034 case PA_SOURCE_MESSAGE_GET_MUTE:
2036 if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
2041 case PA_SOURCE_MESSAGE_SET_STATE: {
2043 pa_bool_t suspend_change =
2044 (s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2045 (PA_SOURCE_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SOURCE_SUSPENDED);
2047 s->thread_info.state = PA_PTR_TO_UINT(userdata);
2049 if (suspend_change) {
2050 pa_source_output *o;
2053 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2054 if (o->suspend_within_thread)
2055 o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
2061 case PA_SOURCE_MESSAGE_DETACH:
2063 /* Detach all streams */
2064 pa_source_detach_within_thread(s);
2067 case PA_SOURCE_MESSAGE_ATTACH:
2069 /* Reattach all streams */
2070 pa_source_attach_within_thread(s);
2073 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
2075 pa_usec_t *usec = userdata;
2076 *usec = pa_source_get_requested_latency_within_thread(s);
2078 /* Yes, that's right, the IO thread will see -1 when no
2079 * explicit requested latency is configured, the main
2080 * thread will see max_latency */
2081 if (*usec == (pa_usec_t) -1)
2082 *usec = s->thread_info.max_latency;
2087 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
2088 pa_usec_t *r = userdata;
2090 pa_source_set_latency_range_within_thread(s, r[0], r[1]);
2095 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
2096 pa_usec_t *r = userdata;
2098 r[0] = s->thread_info.min_latency;
2099 r[1] = s->thread_info.max_latency;
2104 case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
2106 *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2109 case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
2111 pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2114 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
2116 *((size_t*) userdata) = s->thread_info.max_rewind;
2119 case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
2121 pa_source_set_max_rewind_within_thread(s, (size_t) offset);
2124 case PA_SOURCE_MESSAGE_GET_LATENCY:
2126 if (s->monitor_of) {
2127 *((pa_usec_t*) userdata) = 0;
2131 /* Implementors need to overwrite this implementation! */
2134 case PA_SOURCE_MESSAGE_SET_PORT:
2136 pa_assert(userdata);
2138 struct source_message_set_port *msg_data = userdata;
2139 msg_data->ret = s->set_port(s, msg_data->port);
2143 case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
2144 /* This message is sent from IO-thread and handled in main thread. */
2145 pa_assert_ctl_context();
2147 /* Make sure we're not messing with main thread when no longer linked */
2148 if (!PA_SOURCE_IS_LINKED(s->state))
2151 pa_source_get_volume(s, TRUE);
2152 pa_source_get_mute(s, TRUE);
2155 case PA_SOURCE_MESSAGE_MAX:
2162 /* Called from main thread */
2163 int pa_source_suspend_all(pa_core *c, pa_bool_t suspend, pa_suspend_cause_t cause) {
2168 pa_core_assert_ref(c);
2169 pa_assert_ctl_context();
2170 pa_assert(cause != 0);
2172 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
2175 if (source->monitor_of)
2178 if ((r = pa_source_suspend(source, suspend, cause)) < 0)
2185 /* Called from main thread */
2186 void pa_source_detach(pa_source *s) {
2187 pa_source_assert_ref(s);
2188 pa_assert_ctl_context();
2189 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2191 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL) == 0);
2194 /* Called from main thread */
2195 void pa_source_attach(pa_source *s) {
2196 pa_source_assert_ref(s);
2197 pa_assert_ctl_context();
2198 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2200 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
2203 /* Called from IO thread */
2204 void pa_source_detach_within_thread(pa_source *s) {
2205 pa_source_output *o;
2208 pa_source_assert_ref(s);
2209 pa_source_assert_io_context(s);
2210 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2212 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2217 /* Called from IO thread */
2218 void pa_source_attach_within_thread(pa_source *s) {
2219 pa_source_output *o;
2222 pa_source_assert_ref(s);
2223 pa_source_assert_io_context(s);
2224 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
2226 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2231 /* Called from IO thread */
2232 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
2233 pa_usec_t result = (pa_usec_t) -1;
2234 pa_source_output *o;
2237 pa_source_assert_ref(s);
2238 pa_source_assert_io_context(s);
2240 if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2241 return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2243 if (s->thread_info.requested_latency_valid)
2244 return s->thread_info.requested_latency;
2246 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2247 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
2248 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
2249 result = o->thread_info.requested_source_latency;
2251 if (result != (pa_usec_t) -1)
2252 result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2254 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2255 /* Only cache this if we are fully set up */
2256 s->thread_info.requested_latency = result;
2257 s->thread_info.requested_latency_valid = TRUE;
2263 /* Called from main thread */
2264 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
2267 pa_source_assert_ref(s);
2268 pa_assert_ctl_context();
2269 pa_assert(PA_SOURCE_IS_LINKED(s->state));
2271 if (s->state == PA_SOURCE_SUSPENDED)
2274 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2279 /* Called from IO thread */
2280 void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
2281 pa_source_output *o;
2284 pa_source_assert_ref(s);
2285 pa_source_assert_io_context(s);
2287 if (max_rewind == s->thread_info.max_rewind)
2290 s->thread_info.max_rewind = max_rewind;
2292 if (PA_SOURCE_IS_LINKED(s->thread_info.state))
2293 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2294 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
2297 /* Called from main thread */
2298 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
2299 pa_source_assert_ref(s);
2300 pa_assert_ctl_context();
2302 if (PA_SOURCE_IS_LINKED(s->state))
2303 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2305 pa_source_set_max_rewind_within_thread(s, max_rewind);
2308 /* Called from IO thread */
2309 void pa_source_invalidate_requested_latency(pa_source *s, pa_bool_t dynamic) {
2310 pa_source_output *o;
2313 pa_source_assert_ref(s);
2314 pa_source_assert_io_context(s);
2316 if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
2317 s->thread_info.requested_latency_valid = FALSE;
2321 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2323 if (s->update_requested_latency)
2324 s->update_requested_latency(s);
2326 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
2327 if (o->update_source_requested_latency)
2328 o->update_source_requested_latency(o);
2332 pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
2335 /* Called from main thread */
2336 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2337 pa_source_assert_ref(s);
2338 pa_assert_ctl_context();
2340 /* min_latency == 0: no limit
2341 * min_latency anything else: specified limit
2343 * Similar for max_latency */
2345 if (min_latency < ABSOLUTE_MIN_LATENCY)
2346 min_latency = ABSOLUTE_MIN_LATENCY;
2348 if (max_latency <= 0 ||
2349 max_latency > ABSOLUTE_MAX_LATENCY)
2350 max_latency = ABSOLUTE_MAX_LATENCY;
2352 pa_assert(min_latency <= max_latency);
2354 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2355 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2356 max_latency == ABSOLUTE_MAX_LATENCY) ||
2357 (s->flags & PA_SOURCE_DYNAMIC_LATENCY));
2359 if (PA_SOURCE_IS_LINKED(s->state)) {
2365 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2367 pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
2370 /* Called from main thread */
2371 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2372 pa_source_assert_ref(s);
2373 pa_assert_ctl_context();
2374 pa_assert(min_latency);
2375 pa_assert(max_latency);
2377 if (PA_SOURCE_IS_LINKED(s->state)) {
2378 pa_usec_t r[2] = { 0, 0 };
2380 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2382 *min_latency = r[0];
2383 *max_latency = r[1];
2385 *min_latency = s->thread_info.min_latency;
2386 *max_latency = s->thread_info.max_latency;
2390 /* Called from IO thread, and from main thread before pa_source_put() is called */
2391 void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2392 pa_source_assert_ref(s);
2393 pa_source_assert_io_context(s);
2395 pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2396 pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2397 pa_assert(min_latency <= max_latency);
2399 /* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
2400 pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2401 max_latency == ABSOLUTE_MAX_LATENCY) ||
2402 (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
2405 if (s->thread_info.min_latency == min_latency &&
2406 s->thread_info.max_latency == max_latency)
2409 s->thread_info.min_latency = min_latency;
2410 s->thread_info.max_latency = max_latency;
2412 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2413 pa_source_output *o;
2416 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2417 if (o->update_source_latency_range)
2418 o->update_source_latency_range(o);
2421 pa_source_invalidate_requested_latency(s, FALSE);
2424 /* Called from main thread, before the source is put */
2425 void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
2426 pa_source_assert_ref(s);
2427 pa_assert_ctl_context();
2429 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2430 pa_assert(latency == 0);
2434 if (latency < ABSOLUTE_MIN_LATENCY)
2435 latency = ABSOLUTE_MIN_LATENCY;
2437 if (latency > ABSOLUTE_MAX_LATENCY)
2438 latency = ABSOLUTE_MAX_LATENCY;
2440 if (PA_SOURCE_IS_LINKED(s->state))
2441 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2443 s->thread_info.fixed_latency = latency;
2446 /* Called from main thread */
2447 pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
2450 pa_source_assert_ref(s);
2451 pa_assert_ctl_context();
2453 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
2456 if (PA_SOURCE_IS_LINKED(s->state))
2457 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2459 latency = s->thread_info.fixed_latency;
2464 /* Called from IO thread */
2465 void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
2466 pa_source_assert_ref(s);
2467 pa_source_assert_io_context(s);
2469 if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
2470 pa_assert(latency == 0);
2474 pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2475 pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2477 if (s->thread_info.fixed_latency == latency)
2480 s->thread_info.fixed_latency = latency;
2482 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
2483 pa_source_output *o;
2486 PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
2487 if (o->update_source_fixed_latency)
2488 o->update_source_fixed_latency(o);
2491 pa_source_invalidate_requested_latency(s, FALSE);
2494 /* Called from main thread */
2495 size_t pa_source_get_max_rewind(pa_source *s) {
2497 pa_assert_ctl_context();
2498 pa_source_assert_ref(s);
2500 if (!PA_SOURCE_IS_LINKED(s->state))
2501 return s->thread_info.max_rewind;
2503 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2508 /* Called from main context */
2509 int pa_source_set_port(pa_source *s, const char *name, pa_bool_t save) {
2510 pa_device_port *port;
2513 pa_source_assert_ref(s);
2514 pa_assert_ctl_context();
2517 pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
2518 return -PA_ERR_NOTIMPLEMENTED;
2522 return -PA_ERR_NOENTITY;
2524 if (!(port = pa_hashmap_get(s->ports, name)))
2525 return -PA_ERR_NOENTITY;
2527 if (s->active_port == port) {
2528 s->save_port = s->save_port || save;
2532 if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
2533 struct source_message_set_port msg = { .port = port, .ret = 0 };
2534 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT, &msg, 0, NULL) == 0);
2538 ret = s->set_port(s, port);
2541 return -PA_ERR_NOENTITY;
2543 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2545 pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
2547 s->active_port = port;
2548 s->save_port = save;
2550 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
2555 PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
2557 /* Called from the IO thread. */
2558 static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
2559 pa_source_volume_change *c;
2560 if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
2561 c = pa_xnew(pa_source_volume_change, 1);
2563 PA_LLIST_INIT(pa_source_volume_change, c);
2565 pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
2569 /* Called from the IO thread. */
2570 static void pa_source_volume_change_free(pa_source_volume_change *c) {
2572 if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
2576 /* Called from the IO thread. */
2577 void pa_source_volume_change_push(pa_source *s) {
2578 pa_source_volume_change *c = NULL;
2579 pa_source_volume_change *nc = NULL;
2580 uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
2582 const char *direction = NULL;
2585 nc = pa_source_volume_change_new(s);
2587 /* NOTE: There is already more different volumes in pa_source that I can remember.
2588 * Adding one more volume for HW would get us rid of this, but I am trying
2589 * to survive with the ones we already have. */
2590 pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
2592 if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
2593 pa_log_debug("Volume not changing");
2594 pa_source_volume_change_free(nc);
2598 nc->at = pa_source_get_latency_within_thread(s);
2599 nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
2601 if (s->thread_info.volume_changes_tail) {
2602 for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
2603 /* If volume is going up let's do it a bit late. If it is going
2604 * down let's do it a bit early. */
2605 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
2606 if (nc->at + safety_margin > c->at) {
2607 nc->at += safety_margin;
2612 else if (nc->at - safety_margin > c->at) {
2613 nc->at -= safety_margin;
2621 if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
2622 nc->at += safety_margin;
2625 nc->at -= safety_margin;
2628 PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
2631 PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
2634 pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
2636 /* We can ignore volume events that came earlier but should happen later than this. */
2637 PA_LLIST_FOREACH(c, nc->next) {
2638 pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
2639 pa_source_volume_change_free(c);
2642 s->thread_info.volume_changes_tail = nc;
2645 /* Called from the IO thread. */
2646 static void pa_source_volume_change_flush(pa_source *s) {
2647 pa_source_volume_change *c = s->thread_info.volume_changes;
2649 s->thread_info.volume_changes = NULL;
2650 s->thread_info.volume_changes_tail = NULL;
2652 pa_source_volume_change *next = c->next;
2653 pa_source_volume_change_free(c);
2658 /* Called from the IO thread. */
2659 pa_bool_t pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
2661 pa_bool_t ret = FALSE;
2665 if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
2671 pa_assert(s->write_volume);
2673 now = pa_rtclock_now();
2675 while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
2676 pa_source_volume_change *c = s->thread_info.volume_changes;
2677 PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
2678 pa_log_debug("Volume change to %d at %llu was written %llu usec late",
2679 pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
2681 s->thread_info.current_hw_volume = c->hw_volume;
2682 pa_source_volume_change_free(c);
2688 if (s->thread_info.volume_changes) {
2690 *usec_to_next = s->thread_info.volume_changes->at - now;
2691 if (pa_log_ratelimit(PA_LOG_DEBUG))
2692 pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
2697 s->thread_info.volume_changes_tail = NULL;
2703 /* Called from the main thread */
2704 /* Gets the list of formats supported by the source. The members and idxset must
2705 * be freed by the caller. */
2706 pa_idxset* pa_source_get_formats(pa_source *s) {
2711 if (s->get_formats) {
2712 /* Source supports format query, all is good */
2713 ret = s->get_formats(s);
2715 /* Source doesn't support format query, so assume it does PCM */
2716 pa_format_info *f = pa_format_info_new();
2717 f->encoding = PA_ENCODING_PCM;
2719 ret = pa_idxset_new(NULL, NULL);
2720 pa_idxset_put(ret, f, NULL);
2726 /* Called from the main thread */
2727 /* Checks if the source can accept this format */
2728 pa_bool_t pa_source_check_format(pa_source *s, pa_format_info *f)
2730 pa_idxset *formats = NULL;
2731 pa_bool_t ret = FALSE;
2736 formats = pa_source_get_formats(s);
2739 pa_format_info *finfo_device;
2742 PA_IDXSET_FOREACH(finfo_device, formats, i) {
2743 if (pa_format_info_is_compatible(finfo_device, f)) {
2749 pa_idxset_free(formats, (pa_free2_cb_t) pa_format_info_free2, NULL);
2755 /* Called from the main thread */
2756 /* Calculates the intersection between formats supported by the source and
2757 * in_formats, and returns these, in the order of the source's formats. */
2758 pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
2759 pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
2760 pa_format_info *f_source, *f_in;
2765 if (!in_formats || pa_idxset_isempty(in_formats))
2768 source_formats = pa_source_get_formats(s);
2770 PA_IDXSET_FOREACH(f_source, source_formats, i) {
2771 PA_IDXSET_FOREACH(f_in, in_formats, j) {
2772 if (pa_format_info_is_compatible(f_source, f_in))
2773 pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
2779 pa_idxset_free(source_formats, (pa_free2_cb_t) pa_format_info_free2, NULL);