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 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
31 #include <pulse/utf8.h>
32 #include <pulse/xmalloc.h>
33 #include <pulse/timeval.h>
35 #include <pulsecore/source-output.h>
36 #include <pulsecore/namereg.h>
37 #include <pulsecore/core-subscribe.h>
38 #include <pulsecore/log.h>
39 #include <pulsecore/sample-util.h>
43 #define DEFAULT_MIN_LATENCY (4*PA_USEC_PER_MSEC)
45 static PA_DEFINE_CHECK_TYPE(pa_source, pa_msgobject);
47 static void source_free(pa_object *o);
49 pa_source_new_data* pa_source_new_data_init(pa_source_new_data *data) {
52 memset(data, 0, sizeof(*data));
53 data->proplist = pa_proplist_new();
58 void pa_source_new_data_set_name(pa_source_new_data *data, const char *name) {
62 data->name = pa_xstrdup(name);
65 void pa_source_new_data_set_sample_spec(pa_source_new_data *data, const pa_sample_spec *spec) {
68 if ((data->sample_spec_is_set = !!spec))
69 data->sample_spec = *spec;
72 void pa_source_new_data_set_channel_map(pa_source_new_data *data, const pa_channel_map *map) {
75 if ((data->channel_map_is_set = !!map))
76 data->channel_map = *map;
79 void pa_source_new_data_set_volume(pa_source_new_data *data, const pa_cvolume *volume) {
82 if ((data->volume_is_set = !!volume))
83 data->volume = *volume;
86 void pa_source_new_data_set_muted(pa_source_new_data *data, pa_bool_t mute) {
89 data->muted_is_set = TRUE;
93 void pa_source_new_data_done(pa_source_new_data *data) {
97 pa_proplist_free(data->proplist);
100 /* Called from main context */
101 static void reset_callbacks(pa_source *s) {
105 s->get_volume = NULL;
106 s->set_volume = NULL;
109 s->update_requested_latency = NULL;
112 /* Called from main context */
113 pa_source* pa_source_new(
115 pa_source_new_data *data,
116 pa_source_flags_t flags) {
120 char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
124 pa_assert(data->name);
126 s = pa_msgobject_new(pa_source);
128 if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
133 pa_source_new_data_set_name(data, name);
135 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
137 pa_namereg_unregister(core, name);
141 pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
142 pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
144 pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
146 if (!data->channel_map_is_set)
147 pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
149 pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
150 pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
152 if (!data->volume_is_set)
153 pa_cvolume_reset(&data->volume, data->sample_spec.channels);
155 pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
156 pa_return_null_if_fail(data->volume.channels == data->sample_spec.channels);
158 if (!data->muted_is_set)
161 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
163 pa_namereg_unregister(core, name);
167 s->parent.parent.free = source_free;
168 s->parent.process_msg = pa_source_process_msg;
171 s->state = PA_SOURCE_INIT;
173 s->name = pa_xstrdup(name);
174 s->proplist = pa_proplist_copy(data->proplist);
175 s->driver = pa_xstrdup(data->driver);
176 s->module = data->module;
178 s->sample_spec = data->sample_spec;
179 s->channel_map = data->channel_map;
181 s->outputs = pa_idxset_new(NULL, NULL);
183 s->monitor_of = NULL;
185 s->volume = data->volume;
186 s->muted = data->muted;
187 s->refresh_volume = s->refresh_muted = FALSE;
188 s->base_volume = PA_VOLUME_NORM;
196 pa_silence_memchunk_get(
197 &core->silence_cache,
203 s->thread_info.outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
204 pa_cvolume_reset(&s->thread_info.soft_volume, s->sample_spec.channels);
205 s->thread_info.soft_muted = FALSE;
206 s->thread_info.state = s->state;
207 s->thread_info.max_rewind = 0;
208 s->thread_info.requested_latency_valid = FALSE;
209 s->thread_info.requested_latency = 0;
210 s->thread_info.min_latency = DEFAULT_MIN_LATENCY;
211 s->thread_info.max_latency = 0;
213 pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
215 pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s",
218 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
219 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map));
224 /* Called from main context */
225 static int source_set_state(pa_source *s, pa_source_state_t state) {
227 pa_bool_t suspend_change;
228 pa_source_state_t original_state;
232 if (s->state == state)
235 original_state = s->state;
238 (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
239 (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
242 if ((ret = s->set_state(s, state)) < 0)
246 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
249 s->set_state(s, original_state);
256 if (suspend_change) {
260 /* We're suspending or resuming, tell everyone about it */
262 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx)))
264 o->suspend(o, state == PA_SOURCE_SUSPENDED);
267 if (state != PA_SOURCE_UNLINKED) /* if we enter UNLINKED state pa_source_unlink() will fire the apropriate events */
268 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
273 /* Called from main context */
274 void pa_source_put(pa_source *s) {
275 pa_source_assert_ref(s);
277 pa_assert(s->state == PA_SOURCE_INIT);
279 /* The following fields must be initialized properly when calling _put() */
280 pa_assert(s->asyncmsgq);
281 pa_assert(s->rtpoll);
282 pa_assert(!s->thread_info.min_latency || !s->thread_info.max_latency ||
283 s->thread_info.min_latency <= s->thread_info.max_latency);
285 if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL)) {
286 s->flags |= PA_SOURCE_DECIBEL_VOLUME;
288 s->thread_info.soft_volume = s->volume;
289 s->thread_info.soft_muted = s->muted;
292 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
294 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
295 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
298 /* Called from main context */
299 void pa_source_unlink(pa_source *s) {
301 pa_source_output *o, *j = NULL;
305 /* See pa_sink_unlink() for a couple of comments how this function
308 linked = PA_SOURCE_IS_LINKED(s->state);
311 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
313 if (s->state != PA_SOURCE_UNLINKED)
314 pa_namereg_unregister(s->core, s->name);
315 pa_idxset_remove_by_data(s->core->sources, s, NULL);
317 while ((o = pa_idxset_first(s->outputs, NULL))) {
319 pa_source_output_kill(o);
324 source_set_state(s, PA_SOURCE_UNLINKED);
326 s->state = PA_SOURCE_UNLINKED;
331 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
332 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
336 /* Called from main context */
337 static void source_free(pa_object *o) {
338 pa_source_output *so;
339 pa_source *s = PA_SOURCE(o);
342 pa_assert(pa_source_refcnt(s) == 0);
344 if (PA_SOURCE_IS_LINKED(s->state))
347 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
349 pa_idxset_free(s->outputs, NULL, NULL);
351 while ((so = pa_hashmap_steal_first(s->thread_info.outputs)))
352 pa_source_output_unref(so);
354 pa_hashmap_free(s->thread_info.outputs, NULL, NULL);
356 if (s->silence.memblock)
357 pa_memblock_unref(s->silence.memblock);
363 pa_proplist_free(s->proplist);
368 /* Called from main context */
369 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
370 pa_source_assert_ref(s);
375 /* Called from main context */
376 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
377 pa_source_assert_ref(s);
382 /* Called from main context */
383 int pa_source_update_status(pa_source*s) {
384 pa_source_assert_ref(s);
385 pa_assert(PA_SOURCE_IS_LINKED(s->state));
387 if (s->state == PA_SOURCE_SUSPENDED)
390 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
393 /* Called from main context */
394 int pa_source_suspend(pa_source *s, pa_bool_t suspend) {
395 pa_source_assert_ref(s);
396 pa_assert(PA_SOURCE_IS_LINKED(s->state));
399 return source_set_state(s, PA_SOURCE_SUSPENDED);
401 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
404 /* Called from IO thread context */
405 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
409 pa_source_assert_ref(s);
410 pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
415 pa_log_debug("Processing rewind...");
417 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
418 pa_source_output_assert_ref(o);
419 pa_source_output_process_rewind(o, nbytes);
423 /* Called from IO thread context */
424 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
428 pa_source_assert_ref(s);
429 pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
432 if (s->thread_info.state != PA_SOURCE_RUNNING)
435 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
436 pa_memchunk vchunk = *chunk;
438 pa_memblock_ref(vchunk.memblock);
439 pa_memchunk_make_writable(&vchunk, 0);
441 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
442 pa_silence_memchunk(&vchunk, &s->sample_spec);
444 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
446 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
447 pa_source_output_assert_ref(o);
449 if (!o->thread_info.direct_on_input)
450 pa_source_output_push(o, &vchunk);
453 pa_memblock_unref(vchunk.memblock);
456 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
457 pa_source_output_assert_ref(o);
459 if (!o->thread_info.direct_on_input)
460 pa_source_output_push(o, chunk);
465 /* Called from IO thread context */
466 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
467 pa_source_assert_ref(s);
468 pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
469 pa_source_output_assert_ref(o);
470 pa_assert(o->thread_info.direct_on_input);
473 if (s->thread_info.state != PA_SOURCE_RUNNING)
476 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
477 pa_memchunk vchunk = *chunk;
479 pa_memblock_ref(vchunk.memblock);
480 pa_memchunk_make_writable(&vchunk, 0);
482 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
483 pa_silence_memchunk(&vchunk, &s->sample_spec);
485 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
487 pa_source_output_push(o, &vchunk);
489 pa_memblock_unref(vchunk.memblock);
491 pa_source_output_push(o, chunk);
494 /* Called from main thread */
495 pa_usec_t pa_source_get_latency(pa_source *s) {
498 pa_source_assert_ref(s);
499 pa_assert(PA_SOURCE_IS_LINKED(s->state));
501 if (!PA_SOURCE_IS_OPENED(s->state))
504 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
509 /* Called from main thread */
510 void pa_source_set_volume(pa_source *s, const pa_cvolume *volume) {
513 pa_source_assert_ref(s);
514 pa_assert(PA_SOURCE_IS_LINKED(s->state));
517 changed = !pa_cvolume_equal(volume, &s->volume);
520 if (s->set_volume && s->set_volume(s) < 0)
521 s->set_volume = NULL;
524 pa_source_set_soft_volume(s, volume);
527 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
530 /* Called from main thread */
531 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
532 pa_source_assert_ref(s);
535 if (PA_SOURCE_IS_LINKED(s->state))
536 pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, volume, 0, NULL);
538 s->thread_info.soft_volume = *volume;
541 /* Called from main thread */
542 const pa_cvolume *pa_source_get_volume(pa_source *s, pa_bool_t force_refresh) {
543 pa_source_assert_ref(s);
544 pa_assert(PA_SOURCE_IS_LINKED(s->state));
546 if (s->refresh_volume || force_refresh) {
547 pa_cvolume old_volume = s->volume;
549 if (s->get_volume && s->get_volume(s) < 0)
550 s->get_volume = NULL;
553 pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, &s->volume, 0, NULL);
555 if (!pa_cvolume_equal(&old_volume, &s->volume))
556 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
562 /* Called from main thread */
563 void pa_source_set_mute(pa_source *s, pa_bool_t mute) {
566 pa_source_assert_ref(s);
567 pa_assert(PA_SOURCE_IS_LINKED(s->state));
569 changed = s->muted != mute;
572 if (s->set_mute && s->set_mute(s) < 0)
576 pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL);
579 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
582 /* Called from main thread */
583 pa_bool_t pa_source_get_mute(pa_source *s, pa_bool_t force_refresh) {
585 pa_source_assert_ref(s);
586 pa_assert(PA_SOURCE_IS_LINKED(s->state));
588 if (s->refresh_muted || force_refresh) {
589 pa_bool_t old_muted = s->muted;
591 if (s->get_mute && s->get_mute(s) < 0)
595 pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &s->muted, 0, NULL);
597 if (old_muted != s->muted)
598 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
604 /* Called from main thread */
605 void pa_source_set_description(pa_source *s, const char *description) {
607 pa_source_assert_ref(s);
609 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
612 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
614 if (old && description && !strcmp(old, description))
618 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
620 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
622 if (PA_SOURCE_IS_LINKED(s->state)) {
623 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
624 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
628 /* Called from main thread */
629 unsigned pa_source_linked_by(pa_source *s) {
630 pa_source_assert_ref(s);
631 pa_assert(PA_SOURCE_IS_LINKED(s->state));
633 return pa_idxset_size(s->outputs);
636 /* Called from main thread */
637 unsigned pa_source_used_by(pa_source *s) {
640 pa_source_assert_ref(s);
641 pa_assert(PA_SOURCE_IS_LINKED(s->state));
643 ret = pa_idxset_size(s->outputs);
644 pa_assert(ret >= s->n_corked);
646 return ret - s->n_corked;
649 /* Called from main thread */
650 unsigned pa_source_check_suspend(pa_source *s) {
655 pa_source_assert_ref(s);
657 if (!PA_SOURCE_IS_LINKED(s->state))
662 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx))) {
663 pa_source_output_state_t st;
665 st = pa_source_output_get_state(o);
666 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(st));
668 if (st == PA_SOURCE_OUTPUT_CORKED)
671 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
680 /* Called from IO thread, except when it is not */
681 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
682 pa_source *s = PA_SOURCE(object);
683 pa_source_assert_ref(s);
685 switch ((pa_source_message_t) code) {
687 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
688 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
690 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
692 if (o->direct_on_input) {
693 o->thread_info.direct_on_input = o->direct_on_input;
694 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
697 pa_assert(!o->thread_info.attached);
698 o->thread_info.attached = TRUE;
703 pa_source_output_set_state_within_thread(o, o->state);
705 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
706 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
708 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
710 /* We don't just invalidate the requested latency here,
711 * because if we are in a move we might need to fix up the
712 * requested latency. */
713 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
718 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
719 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
721 pa_source_output_set_state_within_thread(o, o->state);
726 pa_assert(o->thread_info.attached);
727 o->thread_info.attached = FALSE;
729 if (o->thread_info.direct_on_input) {
730 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
731 o->thread_info.direct_on_input = NULL;
734 if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
735 pa_source_output_unref(o);
737 pa_source_invalidate_requested_latency(s);
742 case PA_SOURCE_MESSAGE_SET_VOLUME:
743 s->thread_info.soft_volume = *((pa_cvolume*) userdata);
746 case PA_SOURCE_MESSAGE_SET_MUTE:
747 s->thread_info.soft_muted = PA_PTR_TO_UINT(userdata);
750 case PA_SOURCE_MESSAGE_GET_VOLUME:
751 *((pa_cvolume*) userdata) = s->thread_info.soft_volume;
754 case PA_SOURCE_MESSAGE_GET_MUTE:
755 *((pa_bool_t*) userdata) = s->thread_info.soft_muted;
758 case PA_SOURCE_MESSAGE_SET_STATE:
759 s->thread_info.state = PA_PTR_TO_UINT(userdata);
762 case PA_SOURCE_MESSAGE_DETACH:
764 /* Detach all streams */
765 pa_source_detach_within_thread(s);
768 case PA_SOURCE_MESSAGE_ATTACH:
770 /* Reattach all streams */
771 pa_source_attach_within_thread(s);
774 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
776 pa_usec_t *usec = userdata;
777 *usec = pa_source_get_requested_latency_within_thread(s);
779 if (*usec == (pa_usec_t) -1)
780 *usec = s->thread_info.max_latency;
785 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
786 pa_usec_t *r = userdata;
788 pa_source_update_latency_range(s, r[0], r[1]);
793 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
794 pa_usec_t *r = userdata;
796 r[0] = s->thread_info.min_latency;
797 r[1] = s->thread_info.max_latency;
802 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
804 *((size_t*) userdata) = s->thread_info.max_rewind;
807 case PA_SOURCE_MESSAGE_GET_LATENCY:
810 *((pa_usec_t*) userdata) = 0;
814 /* Implementors need to overwrite this implementation! */
817 case PA_SOURCE_MESSAGE_MAX:
824 /* Called from main thread */
825 int pa_source_suspend_all(pa_core *c, pa_bool_t suspend) {
830 pa_core_assert_ref(c);
832 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx)))
833 ret -= pa_source_suspend(source, suspend) < 0;
838 /* Called from main thread */
839 void pa_source_detach(pa_source *s) {
840 pa_source_assert_ref(s);
841 pa_assert(PA_SOURCE_IS_LINKED(s->state));
843 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL) == 0);
846 /* Called from main thread */
847 void pa_source_attach(pa_source *s) {
848 pa_source_assert_ref(s);
849 pa_assert(PA_SOURCE_IS_LINKED(s->state));
851 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
854 /* Called from IO thread */
855 void pa_source_detach_within_thread(pa_source *s) {
859 pa_source_assert_ref(s);
860 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
862 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
867 /* Called from IO thread */
868 void pa_source_attach_within_thread(pa_source *s) {
872 pa_source_assert_ref(s);
873 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
875 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
880 /* Called from IO thread */
881 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
882 pa_usec_t result = (pa_usec_t) -1;
886 pa_source_assert_ref(s);
888 if (s->thread_info.requested_latency_valid)
889 return s->thread_info.requested_latency;
891 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
893 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
894 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
895 result = o->thread_info.requested_source_latency;
897 if (result != (pa_usec_t) -1) {
898 if (s->thread_info.max_latency > 0 && result > s->thread_info.max_latency)
899 result = s->thread_info.max_latency;
901 if (s->thread_info.min_latency > 0 && result < s->thread_info.min_latency)
902 result = s->thread_info.min_latency;
905 s->thread_info.requested_latency = result;
906 s->thread_info.requested_latency_valid = TRUE;
911 /* Called from main thread */
912 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
915 pa_source_assert_ref(s);
916 pa_assert(PA_SOURCE_IS_LINKED(s->state));
918 if (!PA_SOURCE_IS_OPENED(s->state))
921 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
926 /* Called from IO thread */
927 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
931 pa_source_assert_ref(s);
933 if (max_rewind == s->thread_info.max_rewind)
936 s->thread_info.max_rewind = max_rewind;
938 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
939 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
940 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
944 void pa_source_invalidate_requested_latency(pa_source *s) {
948 pa_source_assert_ref(s);
950 s->thread_info.requested_latency_valid = FALSE;
952 if (s->update_requested_latency)
953 s->update_requested_latency(s);
955 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
956 if (o->update_source_requested_latency)
957 o->update_source_requested_latency(o);
960 pa_sink_invalidate_requested_latency(s->monitor_of);
963 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
964 pa_source_assert_ref(s);
966 /* min_latency == 0: no limit
967 * min_latency == (size_t) -1: default limit
968 * min_latency anything else: specified limit
970 * Similar for max_latency */
972 if (min_latency == (pa_usec_t) -1)
973 min_latency = DEFAULT_MIN_LATENCY;
975 if (max_latency == (pa_usec_t) -1)
976 max_latency = min_latency;
978 pa_assert(!min_latency || !max_latency ||
979 min_latency <= max_latency);
981 if (PA_SOURCE_IS_LINKED(s->state)) {
987 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
989 s->thread_info.min_latency = min_latency;
990 s->thread_info.max_latency = max_latency;
992 s->thread_info.requested_latency_valid = FALSE;
996 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
997 pa_source_assert_ref(s);
998 pa_assert(min_latency);
999 pa_assert(max_latency);
1001 if (PA_SOURCE_IS_LINKED(s->state)) {
1002 pa_usec_t r[2] = { 0, 0 };
1004 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
1006 *min_latency = r[0];
1007 *max_latency = r[1];
1009 *min_latency = s->thread_info.min_latency;
1010 *max_latency = s->thread_info.max_latency;
1014 /* Called from IO thread */
1015 void pa_source_update_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
1016 pa_source_output *o;
1019 pa_source_assert_ref(s);
1021 s->thread_info.min_latency = min_latency;
1022 s->thread_info.max_latency = max_latency;
1024 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
1025 if (o->update_source_latency_range)
1026 o->update_source_latency_range(o);
1028 pa_source_invalidate_requested_latency(s);
1031 size_t pa_source_get_max_rewind(pa_source *s) {
1033 pa_source_assert_ref(s);
1035 if (!PA_SOURCE_IS_LINKED(s->state))
1036 return s->thread_info.max_rewind;
1038 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);