2 This file is part of PulseAudio.
4 Copyright 2004-2006 Lennart Poettering
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
30 #include <pulse/utf8.h>
31 #include <pulse/xmalloc.h>
32 #include <pulse/util.h>
34 #include <pulsecore/sample-util.h>
35 #include <pulsecore/core-subscribe.h>
36 #include <pulsecore/log.h>
37 #include <pulsecore/namereg.h>
38 #include <pulsecore/core-util.h>
40 #include "source-output.h"
42 #define MEMBLOCKQ_MAXLENGTH (32*1024*1024)
44 PA_DEFINE_PUBLIC_CLASS(pa_source_output, pa_msgobject);
46 static void source_output_free(pa_object* mo);
48 pa_source_output_new_data* pa_source_output_new_data_init(pa_source_output_new_data *data) {
52 data->resample_method = PA_RESAMPLER_INVALID;
53 data->proplist = pa_proplist_new();
58 void pa_source_output_new_data_set_sample_spec(pa_source_output_new_data *data, const pa_sample_spec *spec) {
61 if ((data->sample_spec_is_set = !!spec))
62 data->sample_spec = *spec;
65 void pa_source_output_new_data_set_channel_map(pa_source_output_new_data *data, const pa_channel_map *map) {
68 if ((data->channel_map_is_set = !!map))
69 data->channel_map = *map;
72 void pa_source_output_new_data_done(pa_source_output_new_data *data) {
75 pa_proplist_free(data->proplist);
78 /* Called from main context */
79 static void reset_callbacks(pa_source_output *o) {
83 o->process_rewind = NULL;
84 o->update_max_rewind = NULL;
85 o->update_source_requested_latency = NULL;
86 o->update_source_latency_range = NULL;
87 o->update_source_fixed_latency = NULL;
91 o->suspend_within_thread = NULL;
94 o->get_latency = NULL;
95 o->state_change = NULL;
96 o->may_move_to = NULL;
100 /* Called from main context */
101 int pa_source_output_new(
102 pa_source_output**_o,
104 pa_source_output_new_data *data,
105 pa_source_output_flags_t flags) {
108 pa_resampler *resampler = NULL;
109 char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
115 pa_assert_ctl_context();
118 pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->client->proplist);
120 if ((r = pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_NEW], data)) < 0)
123 pa_return_val_if_fail(!data->driver || pa_utf8_valid(data->driver), -PA_ERR_INVALID);
126 data->source = pa_namereg_get(core, NULL, PA_NAMEREG_SOURCE);
127 data->save_source = FALSE;
130 pa_return_val_if_fail(data->source, -PA_ERR_NOENTITY);
131 pa_return_val_if_fail(PA_SOURCE_IS_LINKED(pa_source_get_state(data->source)), -PA_ERR_BADSTATE);
132 pa_return_val_if_fail(!data->direct_on_input || data->direct_on_input->sink == data->source->monitor_of, -PA_ERR_INVALID);
134 if (!data->sample_spec_is_set)
135 data->sample_spec = data->source->sample_spec;
137 pa_return_val_if_fail(pa_sample_spec_valid(&data->sample_spec), -PA_ERR_INVALID);
139 if (!data->channel_map_is_set) {
140 if (pa_channel_map_compatible(&data->source->channel_map, &data->sample_spec))
141 data->channel_map = data->source->channel_map;
143 pa_channel_map_init_extend(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT);
146 pa_return_val_if_fail(pa_channel_map_valid(&data->channel_map), -PA_ERR_INVALID);
147 pa_return_val_if_fail(pa_channel_map_compatible(&data->channel_map, &data->sample_spec), -PA_ERR_INVALID);
149 if (flags & PA_SOURCE_OUTPUT_FIX_FORMAT)
150 data->sample_spec.format = data->source->sample_spec.format;
152 if (flags & PA_SOURCE_OUTPUT_FIX_RATE)
153 data->sample_spec.rate = data->source->sample_spec.rate;
155 if (flags & PA_SOURCE_OUTPUT_FIX_CHANNELS) {
156 data->sample_spec.channels = data->source->sample_spec.channels;
157 data->channel_map = data->source->channel_map;
160 pa_assert(pa_sample_spec_valid(&data->sample_spec));
161 pa_assert(pa_channel_map_valid(&data->channel_map));
163 if (data->resample_method == PA_RESAMPLER_INVALID)
164 data->resample_method = core->resample_method;
166 pa_return_val_if_fail(data->resample_method < PA_RESAMPLER_MAX, -PA_ERR_INVALID);
168 if ((r = pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_FIXATE], data)) < 0)
171 if ((flags & PA_SOURCE_OUTPUT_NO_CREATE_ON_SUSPEND) &&
172 pa_source_get_state(data->source) == PA_SOURCE_SUSPENDED) {
173 pa_log("Failed to create source output: source is suspended.");
174 return -PA_ERR_BADSTATE;
177 if (pa_idxset_size(data->source->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
178 pa_log("Failed to create source output: too many outputs per source.");
179 return -PA_ERR_TOOLARGE;
182 if ((flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
183 !pa_sample_spec_equal(&data->sample_spec, &data->source->sample_spec) ||
184 !pa_channel_map_equal(&data->channel_map, &data->source->channel_map)) {
186 if (!(resampler = pa_resampler_new(
188 &data->source->sample_spec, &data->source->channel_map,
189 &data->sample_spec, &data->channel_map,
190 data->resample_method,
191 ((flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
192 ((flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
193 (core->disable_remixing || (flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0) |
194 (core->disable_lfe_remixing ? PA_RESAMPLER_NO_LFE : 0)))) {
195 pa_log_warn("Unsupported resampling operation.");
196 return -PA_ERR_NOTSUPPORTED;
200 o = pa_msgobject_new(pa_source_output);
201 o->parent.parent.free = source_output_free;
202 o->parent.process_msg = pa_source_output_process_msg;
205 o->state = PA_SOURCE_OUTPUT_INIT;
207 o->proplist = pa_proplist_copy(data->proplist);
208 o->driver = pa_xstrdup(pa_path_get_filename(data->driver));
209 o->module = data->module;
210 o->source = data->source;
211 o->client = data->client;
213 o->actual_resample_method = resampler ? pa_resampler_get_method(resampler) : PA_RESAMPLER_INVALID;
214 o->requested_resample_method = data->resample_method;
215 o->sample_spec = data->sample_spec;
216 o->channel_map = data->channel_map;
218 o->direct_on_input = data->direct_on_input;
220 o->save_source = data->save_source;
225 o->thread_info.state = o->state;
226 o->thread_info.attached = FALSE;
227 o->thread_info.sample_spec = o->sample_spec;
228 o->thread_info.resampler = resampler;
229 o->thread_info.requested_source_latency = (pa_usec_t) -1;
230 o->thread_info.direct_on_input = o->direct_on_input;
232 o->thread_info.delay_memblockq = pa_memblockq_new(
236 pa_frame_size(&o->source->sample_spec),
240 &o->source->silence);
242 pa_assert_se(pa_idxset_put(core->source_outputs, o, &o->index) == 0);
243 pa_assert_se(pa_idxset_put(o->source->outputs, pa_source_output_ref(o), NULL) == 0);
246 pa_assert_se(pa_idxset_put(o->client->source_outputs, o, NULL) >= 0);
248 if (o->direct_on_input)
249 pa_assert_se(pa_idxset_put(o->direct_on_input->direct_outputs, o, NULL) == 0);
251 pa_log_info("Created output %u \"%s\" on %s with sample spec %s and channel map %s",
253 pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)),
255 pa_sample_spec_snprint(st, sizeof(st), &o->sample_spec),
256 pa_channel_map_snprint(cm, sizeof(cm), &o->channel_map));
258 /* Don't forget to call pa_source_output_put! */
264 /* Called from main context */
265 static void update_n_corked(pa_source_output *o, pa_source_output_state_t state) {
267 pa_assert_ctl_context();
272 if (o->state == PA_SOURCE_OUTPUT_CORKED && state != PA_SOURCE_OUTPUT_CORKED)
273 pa_assert_se(o->source->n_corked -- >= 1);
274 else if (o->state != PA_SOURCE_OUTPUT_CORKED && state == PA_SOURCE_OUTPUT_CORKED)
275 o->source->n_corked++;
278 /* Called from main context */
279 static void source_output_set_state(pa_source_output *o, pa_source_output_state_t state) {
281 pa_assert_ctl_context();
283 if (o->state == state)
286 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) == 0);
288 update_n_corked(o, state);
291 if (state != PA_SOURCE_OUTPUT_UNLINKED)
292 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_STATE_CHANGED], o);
294 pa_source_update_status(o->source);
297 /* Called from main context */
298 void pa_source_output_unlink(pa_source_output*o) {
301 pa_assert_ctl_context();
303 /* See pa_sink_unlink() for a couple of comments how this function
306 pa_source_output_ref(o);
308 linked = PA_SOURCE_OUTPUT_IS_LINKED(o->state);
311 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK], o);
313 if (o->direct_on_input)
314 pa_idxset_remove_by_data(o->direct_on_input->direct_outputs, o, NULL);
316 pa_idxset_remove_by_data(o->core->source_outputs, o, NULL);
319 if (pa_idxset_remove_by_data(o->source->outputs, o, NULL))
320 pa_source_output_unref(o);
323 pa_idxset_remove_by_data(o->client->source_outputs, o, NULL);
325 update_n_corked(o, PA_SOURCE_OUTPUT_UNLINKED);
326 o->state = PA_SOURCE_OUTPUT_UNLINKED;
328 if (linked && o->source)
329 if (o->source->asyncmsgq)
330 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL) == 0);
335 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_REMOVE, o->index);
336 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK_POST], o);
340 pa_source_update_status(o->source);
344 pa_core_maybe_vacuum(o->core);
346 pa_source_output_unref(o);
349 /* Called from main context */
350 static void source_output_free(pa_object* mo) {
351 pa_source_output *o = PA_SOURCE_OUTPUT(mo);
354 pa_assert_ctl_context();
355 pa_assert(pa_source_output_refcnt(o) == 0);
357 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state))
358 pa_source_output_unlink(o);
360 pa_log_info("Freeing output %u \"%s\"", o->index, pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)));
362 pa_assert(!o->thread_info.attached);
364 if (o->thread_info.delay_memblockq)
365 pa_memblockq_free(o->thread_info.delay_memblockq);
367 if (o->thread_info.resampler)
368 pa_resampler_free(o->thread_info.resampler);
371 pa_proplist_free(o->proplist);
377 /* Called from main context */
378 void pa_source_output_put(pa_source_output *o) {
379 pa_source_output_state_t state;
381 pa_source_output_assert_ref(o);
382 pa_assert_ctl_context();
384 pa_assert(o->state == PA_SOURCE_OUTPUT_INIT);
386 /* The following fields must be initialized properly */
390 state = o->flags & PA_SOURCE_OUTPUT_START_CORKED ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING;
392 update_n_corked(o, state);
395 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, o, 0, NULL) == 0);
397 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_NEW, o->index);
398 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PUT], o);
400 pa_source_update_status(o->source);
403 /* Called from main context */
404 void pa_source_output_kill(pa_source_output*o) {
405 pa_source_output_assert_ref(o);
406 pa_assert_ctl_context();
407 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
412 /* Called from main context */
413 pa_usec_t pa_source_output_get_latency(pa_source_output *o, pa_usec_t *source_latency) {
414 pa_usec_t r[2] = { 0, 0 };
416 pa_source_output_assert_ref(o);
417 pa_assert_ctl_context();
418 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
420 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY, r, 0, NULL) == 0);
423 r[0] += o->get_latency(o);
426 *source_latency = r[1];
431 /* Called from thread context */
432 void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk) {
434 size_t limit, mbs = 0;
436 pa_source_output_assert_ref(o);
437 pa_source_output_assert_io_context(o);
438 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
440 pa_assert(pa_frame_aligned(chunk->length, &o->source->sample_spec));
442 if (!o->push || o->thread_info.state == PA_SOURCE_OUTPUT_CORKED)
445 pa_assert(o->thread_info.state == PA_SOURCE_OUTPUT_RUNNING);
447 if (pa_memblockq_push(o->thread_info.delay_memblockq, chunk) < 0) {
448 pa_log_debug("Delay queue overflow!");
449 pa_memblockq_seek(o->thread_info.delay_memblockq, (int64_t) chunk->length, PA_SEEK_RELATIVE, TRUE);
452 limit = o->process_rewind ? 0 : o->source->thread_info.max_rewind;
454 if (limit > 0 && o->source->monitor_of) {
458 /* Hmm, check the latency for knowing how much of the buffered
459 * data is actually still unplayed and might hence still
460 * change. This is suboptimal. Ideally we'd have a call like
461 * pa_sink_get_changeable_size() or so that tells us how much
462 * of the queued data is actually still changeable. Hence
465 latency = pa_sink_get_latency_within_thread(o->source->monitor_of);
467 n = pa_usec_to_bytes(latency, &o->source->sample_spec);
473 /* Implement the delay queue */
474 while ((length = pa_memblockq_get_length(o->thread_info.delay_memblockq)) > limit) {
479 pa_assert_se(pa_memblockq_peek(o->thread_info.delay_memblockq, &qchunk) >= 0);
481 if (qchunk.length > length)
482 qchunk.length = length;
484 pa_assert(qchunk.length > 0);
486 if (!o->thread_info.resampler)
492 mbs = pa_resampler_max_block_size(o->thread_info.resampler);
494 if (qchunk.length > mbs)
497 pa_resampler_run(o->thread_info.resampler, &qchunk, &rchunk);
499 if (rchunk.length > 0)
503 pa_memblock_unref(rchunk.memblock);
506 pa_memblock_unref(qchunk.memblock);
507 pa_memblockq_drop(o->thread_info.delay_memblockq, qchunk.length);
511 /* Called from thread context */
512 void pa_source_output_process_rewind(pa_source_output *o, size_t nbytes /* in source sample spec */) {
514 pa_source_output_assert_ref(o);
515 pa_source_output_assert_io_context(o);
516 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
517 pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));
522 if (o->process_rewind) {
523 pa_assert(pa_memblockq_get_length(o->thread_info.delay_memblockq) == 0);
525 if (o->thread_info.resampler)
526 nbytes = pa_resampler_result(o->thread_info.resampler, nbytes);
528 pa_log_debug("Have to rewind %lu bytes on implementor.", (unsigned long) nbytes);
531 o->process_rewind(o, nbytes);
533 if (o->thread_info.resampler)
534 pa_resampler_reset(o->thread_info.resampler);
537 pa_memblockq_rewind(o->thread_info.delay_memblockq, nbytes);
540 /* Called from thread context */
541 size_t pa_source_output_get_max_rewind(pa_source_output *o) {
542 pa_source_output_assert_ref(o);
543 pa_source_output_assert_io_context(o);
545 return o->thread_info.resampler ? pa_resampler_request(o->thread_info.resampler, o->source->thread_info.max_rewind) : o->source->thread_info.max_rewind;
548 /* Called from thread context */
549 void pa_source_output_update_max_rewind(pa_source_output *o, size_t nbytes /* in the source's sample spec */) {
550 pa_source_output_assert_ref(o);
551 pa_source_output_assert_io_context(o);
552 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
553 pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));
555 if (o->update_max_rewind)
556 o->update_max_rewind(o, o->thread_info.resampler ? pa_resampler_result(o->thread_info.resampler, nbytes) : nbytes);
559 /* Called from thread context */
560 pa_usec_t pa_source_output_set_requested_latency_within_thread(pa_source_output *o, pa_usec_t usec) {
561 pa_source_output_assert_ref(o);
562 pa_source_output_assert_io_context(o);
564 if (!(o->source->flags & PA_SOURCE_DYNAMIC_LATENCY))
565 usec = o->source->thread_info.fixed_latency;
567 if (usec != (pa_usec_t) -1)
568 usec = PA_CLAMP(usec, o->source->thread_info.min_latency, o->source->thread_info.max_latency);
570 o->thread_info.requested_source_latency = usec;
571 pa_source_invalidate_requested_latency(o->source, TRUE);
576 /* Called from main context */
577 pa_usec_t pa_source_output_set_requested_latency(pa_source_output *o, pa_usec_t usec) {
578 pa_source_output_assert_ref(o);
579 pa_assert_ctl_context();
581 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state) && o->source) {
582 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
586 /* If this source output is not realized yet or is being moved, we
587 * have to touch the thread info data directly */
590 if (!(o->source->flags & PA_SOURCE_DYNAMIC_LATENCY))
591 usec = pa_source_get_fixed_latency(o->source);
593 if (usec != (pa_usec_t) -1) {
594 pa_usec_t min_latency, max_latency;
595 pa_source_get_latency_range(o->source, &min_latency, &max_latency);
596 usec = PA_CLAMP(usec, min_latency, max_latency);
600 o->thread_info.requested_source_latency = usec;
605 /* Called from main context */
606 pa_usec_t pa_source_output_get_requested_latency(pa_source_output *o) {
607 pa_source_output_assert_ref(o);
608 pa_assert_ctl_context();
610 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state) && o->source) {
612 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
616 /* If this source output is not realized yet or is being moved, we
617 * have to touch the thread info data directly */
619 return o->thread_info.requested_source_latency;
622 /* Called from main context */
623 void pa_source_output_cork(pa_source_output *o, pa_bool_t b) {
624 pa_source_output_assert_ref(o);
625 pa_assert_ctl_context();
626 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
628 source_output_set_state(o, b ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING);
631 /* Called from main context */
632 int pa_source_output_set_rate(pa_source_output *o, uint32_t rate) {
633 pa_source_output_assert_ref(o);
634 pa_assert_ctl_context();
635 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
636 pa_return_val_if_fail(o->thread_info.resampler, -PA_ERR_BADSTATE);
638 if (o->sample_spec.rate == rate)
641 o->sample_spec.rate = rate;
643 pa_asyncmsgq_post(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);
645 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
649 /* Called from main context */
650 void pa_source_output_set_name(pa_source_output *o, const char *name) {
652 pa_assert_ctl_context();
653 pa_source_output_assert_ref(o);
655 if (!name && !pa_proplist_contains(o->proplist, PA_PROP_MEDIA_NAME))
658 old = pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME);
660 if (old && name && !strcmp(old, name))
664 pa_proplist_sets(o->proplist, PA_PROP_MEDIA_NAME, name);
666 pa_proplist_unset(o->proplist, PA_PROP_MEDIA_NAME);
668 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state)) {
669 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED], o);
670 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
674 /* Called from main thread */
675 void pa_source_output_update_proplist(pa_source_output *o, pa_update_mode_t mode, pa_proplist *p) {
676 pa_source_output_assert_ref(o);
677 pa_assert_ctl_context();
680 pa_proplist_update(o->proplist, mode, p);
682 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state)) {
683 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED], o);
684 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
688 /* Called from main context */
689 pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o) {
690 pa_source_output_assert_ref(o);
691 pa_assert_ctl_context();
693 return o->actual_resample_method;
696 /* Called from main context */
697 pa_bool_t pa_source_output_may_move(pa_source_output *o) {
698 pa_source_output_assert_ref(o);
699 pa_assert_ctl_context();
700 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
702 if (o->flags & PA_SOURCE_OUTPUT_DONT_MOVE)
705 if (o->direct_on_input)
711 /* Called from main context */
712 pa_bool_t pa_source_output_may_move_to(pa_source_output *o, pa_source *dest) {
713 pa_source_output_assert_ref(o);
714 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
715 pa_source_assert_ref(dest);
717 if (dest == o->source)
720 if (!pa_source_output_may_move(o))
723 if (pa_idxset_size(dest->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
724 pa_log_warn("Failed to move source output: too many outputs per source.");
729 if (!o->may_move_to(o, dest))
735 /* Called from main context */
736 int pa_source_output_start_move(pa_source_output *o) {
740 pa_source_output_assert_ref(o);
741 pa_assert_ctl_context();
742 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
743 pa_assert(o->source);
745 if (!pa_source_output_may_move(o))
746 return -PA_ERR_NOTSUPPORTED;
748 if ((r = pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_START], o)) < 0)
753 pa_idxset_remove_by_data(o->source->outputs, o, NULL);
755 if (pa_source_output_get_state(o) == PA_SOURCE_OUTPUT_CORKED)
756 pa_assert_se(origin->n_corked-- >= 1);
758 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL) == 0);
760 pa_source_update_status(o->source);
763 pa_source_output_unref(o);
768 /* Called from main context */
769 int pa_source_output_finish_move(pa_source_output *o, pa_source *dest, pa_bool_t save) {
770 pa_resampler *new_resampler;
772 pa_source_output_assert_ref(o);
773 pa_assert_ctl_context();
774 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
775 pa_assert(!o->source);
776 pa_source_assert_ref(dest);
778 if (!pa_source_output_may_move_to(o, dest))
781 if (o->thread_info.resampler &&
782 pa_sample_spec_equal(pa_resampler_input_sample_spec(o->thread_info.resampler), &dest->sample_spec) &&
783 pa_channel_map_equal(pa_resampler_input_channel_map(o->thread_info.resampler), &dest->channel_map))
785 /* Try to reuse the old resampler if possible */
786 new_resampler = o->thread_info.resampler;
788 else if ((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
789 !pa_sample_spec_equal(&o->sample_spec, &dest->sample_spec) ||
790 !pa_channel_map_equal(&o->channel_map, &dest->channel_map)) {
792 /* Okey, we need a new resampler for the new source */
794 if (!(new_resampler = pa_resampler_new(
796 &dest->sample_spec, &dest->channel_map,
797 &o->sample_spec, &o->channel_map,
798 o->requested_resample_method,
799 ((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
800 ((o->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
801 (o->core->disable_remixing || (o->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0)))) {
802 pa_log_warn("Unsupported resampling operation.");
803 return -PA_ERR_NOTSUPPORTED;
806 new_resampler = NULL;
812 o->save_source = save;
813 pa_idxset_put(o->source->outputs, pa_source_output_ref(o), NULL);
815 if (pa_source_output_get_state(o) == PA_SOURCE_OUTPUT_CORKED)
816 o->source->n_corked++;
818 /* Replace resampler */
819 if (new_resampler != o->thread_info.resampler) {
820 if (o->thread_info.resampler)
821 pa_resampler_free(o->thread_info.resampler);
822 o->thread_info.resampler = new_resampler;
824 pa_memblockq_free(o->thread_info.delay_memblockq);
826 o->thread_info.delay_memblockq = pa_memblockq_new(
830 pa_frame_size(&o->source->sample_spec),
834 &o->source->silence);
837 pa_source_update_status(dest);
839 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, o, 0, NULL) == 0);
841 pa_log_debug("Successfully moved source output %i to %s.", o->index, dest->name);
843 /* Notify everyone */
844 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FINISH], o);
845 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
850 /* Called from main context */
851 void pa_source_output_fail_move(pa_source_output *o) {
853 pa_source_output_assert_ref(o);
854 pa_assert_ctl_context();
855 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
856 pa_assert(!o->source);
858 /* Check if someone wants this source output? */
859 if (pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FAIL], o) == PA_HOOK_STOP)
865 pa_source_output_kill(o);
868 /* Called from main context */
869 int pa_source_output_move_to(pa_source_output *o, pa_source *dest, pa_bool_t save) {
872 pa_source_output_assert_ref(o);
873 pa_assert_ctl_context();
874 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
875 pa_assert(o->source);
876 pa_source_assert_ref(dest);
878 if (dest == o->source)
881 if (!pa_source_output_may_move_to(o, dest))
882 return -PA_ERR_NOTSUPPORTED;
884 pa_source_output_ref(o);
886 if ((r = pa_source_output_start_move(o)) < 0) {
887 pa_source_output_unref(o);
891 if ((r = pa_source_output_finish_move(o, dest, save)) < 0) {
892 pa_source_output_fail_move(o);
893 pa_source_output_unref(o);
897 pa_source_output_unref(o);
902 /* Called from IO thread context */
903 void pa_source_output_set_state_within_thread(pa_source_output *o, pa_source_output_state_t state) {
904 pa_source_output_assert_ref(o);
905 pa_source_output_assert_io_context(o);
907 if (state == o->thread_info.state)
911 o->state_change(o, state);
913 o->thread_info.state = state;
916 /* Called from IO thread context, except when it is not */
917 int pa_source_output_process_msg(pa_msgobject *mo, int code, void *userdata, int64_t offset, pa_memchunk* chunk) {
918 pa_source_output *o = PA_SOURCE_OUTPUT(mo);
919 pa_source_output_assert_ref(o);
923 case PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY: {
924 pa_usec_t *r = userdata;
926 r[0] += pa_bytes_to_usec(pa_memblockq_get_length(o->thread_info.delay_memblockq), &o->source->sample_spec);
927 r[1] += pa_source_get_latency_within_thread(o->source);
932 case PA_SOURCE_OUTPUT_MESSAGE_SET_RATE:
934 o->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
935 pa_resampler_set_output_rate(o->thread_info.resampler, PA_PTR_TO_UINT(userdata));
938 case PA_SOURCE_OUTPUT_MESSAGE_SET_STATE:
940 pa_source_output_set_state_within_thread(o, PA_PTR_TO_UINT(userdata));
943 case PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY: {
944 pa_usec_t *usec = userdata;
946 *usec = pa_source_output_set_requested_latency_within_thread(o, *usec);
951 case PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY: {
952 pa_usec_t *r = userdata;
954 *r = o->thread_info.requested_source_latency;
959 return -PA_ERR_NOTIMPLEMENTED;
962 /* Called from main context */
963 void pa_source_output_send_event(pa_source_output *o, const char *event, pa_proplist *data) {
964 pa_proplist *pl = NULL;
965 pa_source_output_send_event_hook_data hook_data;
967 pa_source_output_assert_ref(o);
968 pa_assert_ctl_context();
975 data = pl = pa_proplist_new();
977 hook_data.source_output = o;
978 hook_data.data = data;
979 hook_data.event = event;
981 if (pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_SEND_EVENT], &hook_data) < 0)
984 o->send_event(o, event, data);
988 pa_proplist_free(pl);