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;
195 pa_silence_memchunk_get(
196 &core->silence_cache,
202 s->thread_info.outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
203 pa_cvolume_reset(&s->thread_info.soft_volume, s->sample_spec.channels);
204 s->thread_info.soft_muted = FALSE;
205 s->thread_info.state = s->state;
206 s->thread_info.max_rewind = 0;
207 s->thread_info.requested_latency_valid = FALSE;
208 s->thread_info.requested_latency = 0;
209 s->thread_info.min_latency = DEFAULT_MIN_LATENCY;
210 s->thread_info.max_latency = 0;
212 pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
214 pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s",
217 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
218 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map));
223 /* Called from main context */
224 static int source_set_state(pa_source *s, pa_source_state_t state) {
226 pa_bool_t suspend_change;
227 pa_source_state_t original_state;
231 if (s->state == state)
234 original_state = s->state;
237 (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
238 (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
241 if ((ret = s->set_state(s, state)) < 0)
245 if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
248 s->set_state(s, original_state);
255 if (suspend_change) {
259 /* We're suspending or resuming, tell everyone about it */
261 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx)))
263 o->suspend(o, state == PA_SOURCE_SUSPENDED);
266 if (state != PA_SOURCE_UNLINKED) /* if we enter UNLINKED state pa_source_unlink() will fire the apropriate events */
267 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
272 /* Called from main context */
273 void pa_source_put(pa_source *s) {
274 pa_source_assert_ref(s);
276 pa_assert(s->state == PA_SOURCE_INIT);
278 /* The following fields must be initialized properly when calling _put() */
279 pa_assert(s->asyncmsgq);
280 pa_assert(s->rtpoll);
281 pa_assert(!s->thread_info.min_latency || !s->thread_info.max_latency ||
282 s->thread_info.min_latency <= s->thread_info.max_latency);
284 if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL)) {
285 s->flags |= PA_SOURCE_DECIBEL_VOLUME;
287 s->thread_info.soft_volume = s->volume;
288 s->thread_info.soft_muted = s->muted;
291 pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
293 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
294 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
297 /* Called from main context */
298 void pa_source_unlink(pa_source *s) {
300 pa_source_output *o, *j = NULL;
304 /* See pa_sink_unlink() for a couple of comments how this function
307 linked = PA_SOURCE_IS_LINKED(s->state);
310 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
312 if (s->state != PA_SOURCE_UNLINKED)
313 pa_namereg_unregister(s->core, s->name);
314 pa_idxset_remove_by_data(s->core->sources, s, NULL);
316 while ((o = pa_idxset_first(s->outputs, NULL))) {
318 pa_source_output_kill(o);
323 source_set_state(s, PA_SOURCE_UNLINKED);
325 s->state = PA_SOURCE_UNLINKED;
330 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
331 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
335 /* Called from main context */
336 static void source_free(pa_object *o) {
337 pa_source_output *so;
338 pa_source *s = PA_SOURCE(o);
341 pa_assert(pa_source_refcnt(s) == 0);
343 if (PA_SOURCE_IS_LINKED(s->state))
346 pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
348 pa_idxset_free(s->outputs, NULL, NULL);
350 while ((so = pa_hashmap_steal_first(s->thread_info.outputs)))
351 pa_source_output_unref(so);
353 pa_hashmap_free(s->thread_info.outputs, NULL, NULL);
355 if (s->silence.memblock)
356 pa_memblock_unref(s->silence.memblock);
362 pa_proplist_free(s->proplist);
367 /* Called from main context */
368 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
369 pa_source_assert_ref(s);
374 /* Called from main context */
375 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
376 pa_source_assert_ref(s);
381 /* Called from main context */
382 int pa_source_update_status(pa_source*s) {
383 pa_source_assert_ref(s);
384 pa_assert(PA_SOURCE_IS_LINKED(s->state));
386 if (s->state == PA_SOURCE_SUSPENDED)
389 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
392 /* Called from main context */
393 int pa_source_suspend(pa_source *s, pa_bool_t suspend) {
394 pa_source_assert_ref(s);
395 pa_assert(PA_SOURCE_IS_LINKED(s->state));
398 return source_set_state(s, PA_SOURCE_SUSPENDED);
400 return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
403 /* Called from IO thread context */
404 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
408 pa_source_assert_ref(s);
409 pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
414 pa_log_debug("Processing rewind...");
416 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
417 pa_source_output_assert_ref(o);
418 pa_source_output_process_rewind(o, nbytes);
422 /* Called from IO thread context */
423 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
427 pa_source_assert_ref(s);
428 pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
431 if (s->thread_info.state != PA_SOURCE_RUNNING)
434 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
435 pa_memchunk vchunk = *chunk;
437 pa_memblock_ref(vchunk.memblock);
438 pa_memchunk_make_writable(&vchunk, 0);
440 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
441 pa_silence_memchunk(&vchunk, &s->sample_spec);
443 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
445 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
446 pa_source_output_assert_ref(o);
448 if (!o->thread_info.direct_on_input)
449 pa_source_output_push(o, &vchunk);
452 pa_memblock_unref(vchunk.memblock);
455 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
456 pa_source_output_assert_ref(o);
458 if (!o->thread_info.direct_on_input)
459 pa_source_output_push(o, chunk);
464 /* Called from IO thread context */
465 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
466 pa_source_assert_ref(s);
467 pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
468 pa_source_output_assert_ref(o);
469 pa_assert(o->thread_info.direct_on_input);
472 if (s->thread_info.state != PA_SOURCE_RUNNING)
475 if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
476 pa_memchunk vchunk = *chunk;
478 pa_memblock_ref(vchunk.memblock);
479 pa_memchunk_make_writable(&vchunk, 0);
481 if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
482 pa_silence_memchunk(&vchunk, &s->sample_spec);
484 pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
486 pa_source_output_push(o, &vchunk);
488 pa_memblock_unref(vchunk.memblock);
490 pa_source_output_push(o, chunk);
493 /* Called from main thread */
494 pa_usec_t pa_source_get_latency(pa_source *s) {
497 pa_source_assert_ref(s);
498 pa_assert(PA_SOURCE_IS_LINKED(s->state));
500 if (!PA_SOURCE_IS_OPENED(s->state))
503 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
508 /* Called from main thread */
509 void pa_source_set_volume(pa_source *s, const pa_cvolume *volume) {
512 pa_source_assert_ref(s);
513 pa_assert(PA_SOURCE_IS_LINKED(s->state));
516 changed = !pa_cvolume_equal(volume, &s->volume);
519 if (s->set_volume && s->set_volume(s) < 0)
520 s->set_volume = NULL;
523 pa_source_set_soft_volume(s, volume);
526 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
529 /* Called from main thread */
530 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
531 pa_source_assert_ref(s);
534 if (PA_SOURCE_IS_LINKED(s->state))
535 pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, volume, 0, NULL);
537 s->thread_info.soft_volume = *volume;
540 /* Called from main thread */
541 const pa_cvolume *pa_source_get_volume(pa_source *s, pa_bool_t force_refresh) {
542 pa_source_assert_ref(s);
543 pa_assert(PA_SOURCE_IS_LINKED(s->state));
545 if (s->refresh_volume || force_refresh) {
546 pa_cvolume old_volume = s->volume;
548 if (s->get_volume && s->get_volume(s) < 0)
549 s->get_volume = NULL;
552 pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, &s->volume, 0, NULL);
554 if (!pa_cvolume_equal(&old_volume, &s->volume))
555 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
561 /* Called from main thread */
562 void pa_source_set_mute(pa_source *s, pa_bool_t mute) {
565 pa_source_assert_ref(s);
566 pa_assert(PA_SOURCE_IS_LINKED(s->state));
568 changed = s->muted != mute;
571 if (s->set_mute && s->set_mute(s) < 0)
575 pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL);
578 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
581 /* Called from main thread */
582 pa_bool_t pa_source_get_mute(pa_source *s, pa_bool_t force_refresh) {
584 pa_source_assert_ref(s);
585 pa_assert(PA_SOURCE_IS_LINKED(s->state));
587 if (s->refresh_muted || force_refresh) {
588 pa_bool_t old_muted = s->muted;
590 if (s->get_mute && s->get_mute(s) < 0)
594 pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &s->muted, 0, NULL);
596 if (old_muted != s->muted)
597 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
603 /* Called from main thread */
604 void pa_source_set_description(pa_source *s, const char *description) {
606 pa_source_assert_ref(s);
608 if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
611 old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
613 if (old && description && !strcmp(old, description))
617 pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
619 pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
621 if (PA_SOURCE_IS_LINKED(s->state)) {
622 pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
623 pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
627 /* Called from main thread */
628 unsigned pa_source_linked_by(pa_source *s) {
629 pa_source_assert_ref(s);
630 pa_assert(PA_SOURCE_IS_LINKED(s->state));
632 return pa_idxset_size(s->outputs);
635 /* Called from main thread */
636 unsigned pa_source_used_by(pa_source *s) {
639 pa_source_assert_ref(s);
640 pa_assert(PA_SOURCE_IS_LINKED(s->state));
642 ret = pa_idxset_size(s->outputs);
643 pa_assert(ret >= s->n_corked);
645 return ret - s->n_corked;
648 /* Called from main thread */
649 unsigned pa_source_check_suspend(pa_source *s) {
654 pa_source_assert_ref(s);
655 pa_assert(PA_SOURCE_IS_LINKED(s->state));
659 for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx))) {
660 pa_source_output_state_t st;
662 st = pa_source_output_get_state(o);
663 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(st));
665 if (st == PA_SOURCE_OUTPUT_CORKED)
668 if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
677 /* Called from IO thread, except when it is not */
678 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
679 pa_source *s = PA_SOURCE(object);
680 pa_source_assert_ref(s);
682 switch ((pa_source_message_t) code) {
684 case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
685 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
687 pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
689 if (o->direct_on_input) {
690 o->thread_info.direct_on_input = o->direct_on_input;
691 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
694 pa_assert(!o->thread_info.attached);
695 o->thread_info.attached = TRUE;
700 pa_source_output_set_state_within_thread(o, o->state);
702 if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
703 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
705 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
707 /* We don't just invalidate the requested latency here,
708 * because if we are in a move we might need to fix up the
709 * requested latency. */
710 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
715 case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
716 pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
718 pa_source_output_set_state_within_thread(o, o->state);
723 pa_assert(o->thread_info.attached);
724 o->thread_info.attached = FALSE;
726 if (o->thread_info.direct_on_input) {
727 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
728 o->thread_info.direct_on_input = NULL;
731 if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
732 pa_source_output_unref(o);
734 pa_source_invalidate_requested_latency(s);
739 case PA_SOURCE_MESSAGE_SET_VOLUME:
740 s->thread_info.soft_volume = *((pa_cvolume*) userdata);
743 case PA_SOURCE_MESSAGE_SET_MUTE:
744 s->thread_info.soft_muted = PA_PTR_TO_UINT(userdata);
747 case PA_SOURCE_MESSAGE_GET_VOLUME:
748 *((pa_cvolume*) userdata) = s->thread_info.soft_volume;
751 case PA_SOURCE_MESSAGE_GET_MUTE:
752 *((pa_bool_t*) userdata) = s->thread_info.soft_muted;
755 case PA_SOURCE_MESSAGE_SET_STATE:
756 s->thread_info.state = PA_PTR_TO_UINT(userdata);
759 case PA_SOURCE_MESSAGE_DETACH:
761 /* Detach all streams */
762 pa_source_detach_within_thread(s);
765 case PA_SOURCE_MESSAGE_ATTACH:
767 /* Reattach all streams */
768 pa_source_attach_within_thread(s);
771 case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
773 pa_usec_t *usec = userdata;
774 *usec = pa_source_get_requested_latency_within_thread(s);
776 if (*usec == (pa_usec_t) -1)
777 *usec = s->thread_info.max_latency;
782 case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
783 pa_usec_t *r = userdata;
785 pa_source_update_latency_range(s, r[0], r[1]);
790 case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
791 pa_usec_t *r = userdata;
793 r[0] = s->thread_info.min_latency;
794 r[1] = s->thread_info.max_latency;
799 case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
801 *((size_t*) userdata) = s->thread_info.max_rewind;
804 case PA_SOURCE_MESSAGE_GET_LATENCY:
807 *((pa_usec_t*) userdata) = 0;
811 /* Implementors need to overwrite this implementation! */
814 case PA_SOURCE_MESSAGE_MAX:
821 /* Called from main thread */
822 int pa_source_suspend_all(pa_core *c, pa_bool_t suspend) {
827 pa_core_assert_ref(c);
829 for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx)))
830 ret -= pa_source_suspend(source, suspend) < 0;
835 /* Called from main thread */
836 void pa_source_detach(pa_source *s) {
837 pa_source_assert_ref(s);
838 pa_assert(PA_SOURCE_IS_LINKED(s->state));
840 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL) == 0);
843 /* Called from main thread */
844 void pa_source_attach(pa_source *s) {
845 pa_source_assert_ref(s);
846 pa_assert(PA_SOURCE_IS_LINKED(s->state));
848 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
851 /* Called from IO thread */
852 void pa_source_detach_within_thread(pa_source *s) {
856 pa_source_assert_ref(s);
857 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
859 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
864 /* Called from IO thread */
865 void pa_source_attach_within_thread(pa_source *s) {
869 pa_source_assert_ref(s);
870 pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
872 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
877 /* Called from IO thread */
878 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
879 pa_usec_t result = (pa_usec_t) -1;
883 pa_source_assert_ref(s);
885 if (s->thread_info.requested_latency_valid)
886 return s->thread_info.requested_latency;
888 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
890 if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
891 (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
892 result = o->thread_info.requested_source_latency;
894 if (result != (pa_usec_t) -1) {
895 if (s->thread_info.max_latency > 0 && result > s->thread_info.max_latency)
896 result = s->thread_info.max_latency;
898 if (s->thread_info.min_latency > 0 && result < s->thread_info.min_latency)
899 result = s->thread_info.min_latency;
902 s->thread_info.requested_latency = result;
903 s->thread_info.requested_latency_valid = TRUE;
908 /* Called from main thread */
909 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
912 pa_source_assert_ref(s);
913 pa_assert(PA_SOURCE_IS_LINKED(s->state));
915 if (!PA_SOURCE_IS_OPENED(s->state))
918 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
923 /* Called from IO thread */
924 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
928 pa_source_assert_ref(s);
930 if (max_rewind == s->thread_info.max_rewind)
933 s->thread_info.max_rewind = max_rewind;
935 if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
936 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
937 pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
941 void pa_source_invalidate_requested_latency(pa_source *s) {
945 pa_source_assert_ref(s);
947 s->thread_info.requested_latency_valid = FALSE;
949 if (s->update_requested_latency)
950 s->update_requested_latency(s);
952 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
953 if (o->update_source_requested_latency)
954 o->update_source_requested_latency(o);
957 pa_sink_invalidate_requested_latency(s->monitor_of);
960 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
961 pa_source_assert_ref(s);
963 /* min_latency == 0: no limit
964 * min_latency == (size_t) -1: default limit
965 * min_latency anything else: specified limit
967 * Similar for max_latency */
969 if (min_latency == (pa_usec_t) -1)
970 min_latency = DEFAULT_MIN_LATENCY;
972 if (max_latency == (pa_usec_t) -1)
973 max_latency = min_latency;
975 pa_assert(!min_latency || !max_latency ||
976 min_latency <= max_latency);
978 if (PA_SOURCE_IS_LINKED(s->state)) {
984 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
986 s->thread_info.min_latency = min_latency;
987 s->thread_info.max_latency = max_latency;
989 s->thread_info.requested_latency_valid = FALSE;
993 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
994 pa_source_assert_ref(s);
995 pa_assert(min_latency);
996 pa_assert(max_latency);
998 if (PA_SOURCE_IS_LINKED(s->state)) {
999 pa_usec_t r[2] = { 0, 0 };
1001 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
1003 *min_latency = r[0];
1004 *max_latency = r[1];
1006 *min_latency = s->thread_info.min_latency;
1007 *max_latency = s->thread_info.max_latency;
1011 /* Called from IO thread */
1012 void pa_source_update_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
1013 pa_source_output *o;
1016 pa_source_assert_ref(s);
1018 s->thread_info.min_latency = min_latency;
1019 s->thread_info.max_latency = max_latency;
1021 while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
1022 if (o->update_source_latency_range)
1023 o->update_source_latency_range(o);
1025 pa_source_invalidate_requested_latency(s);
1028 size_t pa_source_get_max_rewind(pa_source *s) {
1030 pa_source_assert_ref(s);
1032 if (!PA_SOURCE_IS_LINKED(s->state))
1033 return s->thread_info.max_rewind;
1035 pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);