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 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 static PA_DEFINE_CHECK_TYPE(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) {
51 memset(data, 0, sizeof(*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;
92 o->get_latency = NULL;
93 o->state_change = NULL;
94 o->may_move_to = NULL;
97 /* Called from main context */
98 pa_source_output* pa_source_output_new(
100 pa_source_output_new_data *data,
101 pa_source_output_flags_t flags) {
104 pa_resampler *resampler = NULL;
105 char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
110 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_NEW], data) < 0)
113 pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
116 data->source = pa_namereg_get(core, NULL, PA_NAMEREG_SOURCE);
118 pa_return_null_if_fail(data->source);
119 pa_return_null_if_fail(pa_source_get_state(data->source) != PA_SOURCE_UNLINKED);
121 pa_return_null_if_fail(!data->direct_on_input || data->direct_on_input->sink == data->source->monitor_of);
123 if (!data->sample_spec_is_set)
124 data->sample_spec = data->source->sample_spec;
126 pa_return_null_if_fail(pa_sample_spec_valid(&data->sample_spec));
128 if (!data->channel_map_is_set) {
129 if (pa_channel_map_compatible(&data->source->channel_map, &data->sample_spec))
130 data->channel_map = data->source->channel_map;
132 pa_channel_map_init_extend(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT);
135 pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
136 pa_return_null_if_fail(pa_channel_map_compatible(&data->channel_map, &data->sample_spec));
138 if (flags & PA_SOURCE_OUTPUT_FIX_FORMAT)
139 data->sample_spec.format = data->source->sample_spec.format;
141 if (flags & PA_SOURCE_OUTPUT_FIX_RATE)
142 data->sample_spec.rate = data->source->sample_spec.rate;
144 if (flags & PA_SOURCE_OUTPUT_FIX_CHANNELS) {
145 data->sample_spec.channels = data->source->sample_spec.channels;
146 data->channel_map = data->source->channel_map;
149 pa_assert(pa_sample_spec_valid(&data->sample_spec));
150 pa_assert(pa_channel_map_valid(&data->channel_map));
152 if (data->resample_method == PA_RESAMPLER_INVALID)
153 data->resample_method = core->resample_method;
155 pa_return_null_if_fail(data->resample_method < PA_RESAMPLER_MAX);
158 pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->client->proplist);
160 if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_FIXATE], data) < 0)
163 if (pa_idxset_size(data->source->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
164 pa_log("Failed to create source output: too many outputs per source.");
168 if ((flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
169 !pa_sample_spec_equal(&data->sample_spec, &data->source->sample_spec) ||
170 !pa_channel_map_equal(&data->channel_map, &data->source->channel_map)) {
172 if (!(resampler = pa_resampler_new(
174 &data->source->sample_spec, &data->source->channel_map,
175 &data->sample_spec, &data->channel_map,
176 data->resample_method,
177 ((flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
178 ((flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
179 (core->disable_remixing || (flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0) |
180 (core->disable_lfe_remixing ? PA_RESAMPLER_NO_LFE : 0)))) {
181 pa_log_warn("Unsupported resampling operation.");
186 o = pa_msgobject_new(pa_source_output);
187 o->parent.parent.free = source_output_free;
188 o->parent.process_msg = pa_source_output_process_msg;
191 o->state = PA_SOURCE_OUTPUT_INIT;
193 o->proplist = pa_proplist_copy(data->proplist);
194 o->driver = pa_xstrdup(pa_path_get_filename(data->driver));
195 o->module = data->module;
196 o->source = data->source;
197 o->client = data->client;
200 o->actual_resample_method = resampler ? pa_resampler_get_method(resampler) : PA_RESAMPLER_INVALID;
201 o->requested_resample_method = data->resample_method;
202 o->sample_spec = data->sample_spec;
203 o->channel_map = data->channel_map;
205 o->direct_on_input = data->direct_on_input;
210 o->thread_info.state = o->state;
211 o->thread_info.attached = FALSE;
212 o->thread_info.sample_spec = o->sample_spec;
213 o->thread_info.resampler = resampler;
214 o->thread_info.requested_source_latency = (pa_usec_t) -1;
215 o->thread_info.direct_on_input = o->direct_on_input;
217 o->thread_info.delay_memblockq = pa_memblockq_new(
221 pa_frame_size(&o->source->sample_spec),
225 &o->source->silence);
227 pa_assert_se(pa_idxset_put(core->source_outputs, o, &o->index) == 0);
228 pa_assert_se(pa_idxset_put(o->source->outputs, pa_source_output_ref(o), NULL) == 0);
231 pa_assert_se(pa_idxset_put(o->client->source_outputs, o, NULL) >= 0);
233 if (o->direct_on_input)
234 pa_assert_se(pa_idxset_put(o->direct_on_input->direct_outputs, o, NULL) == 0);
236 pa_log_info("Created output %u \"%s\" on %s with sample spec %s and channel map %s",
238 pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)),
240 pa_sample_spec_snprint(st, sizeof(st), &o->sample_spec),
241 pa_channel_map_snprint(cm, sizeof(cm), &o->channel_map));
243 /* Don't forget to call pa_source_output_put! */
248 /* Called from main context */
249 static void update_n_corked(pa_source_output *o, pa_source_output_state_t state) {
255 if (o->state == PA_SOURCE_OUTPUT_CORKED && state != PA_SOURCE_OUTPUT_CORKED)
256 pa_assert_se(o->source->n_corked -- >= 1);
257 else if (o->state != PA_SOURCE_OUTPUT_CORKED && state == PA_SOURCE_OUTPUT_CORKED)
258 o->source->n_corked++;
261 /* Called from main context */
262 static int source_output_set_state(pa_source_output *o, pa_source_output_state_t state) {
265 if (o->state == state)
268 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);
270 update_n_corked(o, state);
273 if (state != PA_SOURCE_OUTPUT_UNLINKED)
274 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_STATE_CHANGED], o);
276 pa_source_update_status(o->source);
281 /* Called from main context */
282 void pa_source_output_unlink(pa_source_output*o) {
286 /* See pa_sink_unlink() for a couple of comments how this function
289 pa_source_output_ref(o);
291 linked = PA_SOURCE_OUTPUT_IS_LINKED(o->state);
294 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK], o);
296 if (o->direct_on_input)
297 pa_idxset_remove_by_data(o->direct_on_input->direct_outputs, o, NULL);
299 pa_idxset_remove_by_data(o->core->source_outputs, o, NULL);
302 if (pa_idxset_remove_by_data(o->source->outputs, o, NULL))
303 pa_source_output_unref(o);
306 pa_idxset_remove_by_data(o->client->source_outputs, o, NULL);
308 update_n_corked(o, PA_SOURCE_OUTPUT_UNLINKED);
309 o->state = PA_SOURCE_OUTPUT_UNLINKED;
311 if (linked && o->source)
312 if (o->source->asyncmsgq)
313 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL) == 0);
318 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_REMOVE, o->index);
319 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK_POST], o);
323 pa_source_update_status(o->source);
327 pa_source_output_unref(o);
330 /* Called from main context */
331 static void source_output_free(pa_object* mo) {
332 pa_source_output *o = PA_SOURCE_OUTPUT(mo);
335 pa_assert(pa_source_output_refcnt(o) == 0);
337 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state))
338 pa_source_output_unlink(o);
340 pa_log_info("Freeing output %u \"%s\"", o->index, pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)));
342 pa_assert(!o->thread_info.attached);
344 if (o->thread_info.delay_memblockq)
345 pa_memblockq_free(o->thread_info.delay_memblockq);
347 if (o->thread_info.resampler)
348 pa_resampler_free(o->thread_info.resampler);
351 pa_proplist_free(o->proplist);
357 /* Called from main context */
358 void pa_source_output_put(pa_source_output *o) {
359 pa_source_output_state_t state;
360 pa_source_output_assert_ref(o);
362 pa_assert(o->state == PA_SOURCE_OUTPUT_INIT);
364 /* The following fields must be initialized properly */
368 state = o->flags & PA_SOURCE_OUTPUT_START_CORKED ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING;
370 update_n_corked(o, state);
373 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, o, 0, NULL) == 0);
375 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_NEW, o->index);
376 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PUT], o);
378 pa_source_update_status(o->source);
381 /* Called from main context */
382 void pa_source_output_kill(pa_source_output*o) {
383 pa_source_output_assert_ref(o);
384 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
389 /* Called from main context */
390 pa_usec_t pa_source_output_get_latency(pa_source_output *o, pa_usec_t *source_latency) {
391 pa_usec_t r[2] = { 0, 0 };
393 pa_source_output_assert_ref(o);
394 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
396 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY, r, 0, NULL) == 0);
399 r[0] += o->get_latency(o);
402 *source_latency = r[1];
407 /* Called from thread context */
408 void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk) {
410 size_t limit, mbs = 0;
412 pa_source_output_assert_ref(o);
413 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
415 pa_assert(pa_frame_aligned(chunk->length, &o->source->sample_spec));
417 if (!o->push || o->thread_info.state == PA_SOURCE_OUTPUT_CORKED)
420 pa_assert(o->thread_info.state == PA_SOURCE_OUTPUT_RUNNING);
422 if (pa_memblockq_push(o->thread_info.delay_memblockq, chunk) < 0) {
423 pa_log_debug("Delay queue overflow!");
424 pa_memblockq_seek(o->thread_info.delay_memblockq, (int64_t) chunk->length, PA_SEEK_RELATIVE);
427 limit = o->process_rewind ? 0 : o->source->thread_info.max_rewind;
429 /* Implement the delay queue */
430 while ((length = pa_memblockq_get_length(o->thread_info.delay_memblockq)) > limit) {
435 pa_assert_se(pa_memblockq_peek(o->thread_info.delay_memblockq, &qchunk) >= 0);
437 if (qchunk.length > length)
438 qchunk.length = length;
440 pa_assert(qchunk.length > 0);
442 if (!o->thread_info.resampler)
448 mbs = pa_resampler_max_block_size(o->thread_info.resampler);
450 if (qchunk.length > mbs)
453 pa_resampler_run(o->thread_info.resampler, &qchunk, &rchunk);
455 if (rchunk.length > 0)
459 pa_memblock_unref(rchunk.memblock);
462 pa_memblock_unref(qchunk.memblock);
463 pa_memblockq_drop(o->thread_info.delay_memblockq, qchunk.length);
467 /* Called from thread context */
468 void pa_source_output_process_rewind(pa_source_output *o, size_t nbytes /* in source sample spec */) {
469 pa_source_output_assert_ref(o);
471 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
472 pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));
477 if (o->process_rewind) {
478 pa_assert(pa_memblockq_get_length(o->thread_info.delay_memblockq) == 0);
480 if (o->thread_info.resampler)
481 nbytes = pa_resampler_result(o->thread_info.resampler, nbytes);
483 pa_log_debug("Have to rewind %lu bytes on implementor.", (unsigned long) nbytes);
486 o->process_rewind(o, nbytes);
488 if (o->thread_info.resampler)
489 pa_resampler_reset(o->thread_info.resampler);
492 pa_memblockq_rewind(o->thread_info.delay_memblockq, nbytes);
495 /* Called from thread context */
496 void pa_source_output_update_max_rewind(pa_source_output *o, size_t nbytes /* in the source's sample spec */) {
497 pa_source_output_assert_ref(o);
498 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
499 pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));
501 if (o->update_max_rewind)
502 o->update_max_rewind(o, o->thread_info.resampler ? pa_resampler_result(o->thread_info.resampler, nbytes) : nbytes);
505 /* Called from thread context */
506 static pa_usec_t fixup_latency(pa_source *s, pa_usec_t usec) {
507 pa_source_assert_ref(s);
509 if (usec == (pa_usec_t) -1)
512 if (s->thread_info.max_latency > 0 && usec > s->thread_info.max_latency)
513 usec = s->thread_info.max_latency;
515 if (s->thread_info.min_latency > 0 && usec < s->thread_info.min_latency)
516 usec = s->thread_info.min_latency;
521 /* Called from thread context */
522 pa_usec_t pa_source_output_set_requested_latency_within_thread(pa_source_output *o, pa_usec_t usec) {
523 pa_source_output_assert_ref(o);
525 usec = fixup_latency(o->source, usec);
526 o->thread_info.requested_source_latency = usec;
527 pa_source_invalidate_requested_latency(o->source);
532 /* Called from main context */
533 pa_usec_t pa_source_output_set_requested_latency(pa_source_output *o, pa_usec_t usec) {
534 pa_source_output_assert_ref(o);
536 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state))
537 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
539 /* If this source output is not realized yet, we have to touch
540 * the thread info data directly */
542 o->thread_info.requested_source_latency = usec;
547 /* Called from main context */
548 pa_usec_t pa_source_output_get_requested_latency(pa_source_output *o) {
551 pa_source_output_assert_ref(o);
553 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state))
554 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
556 /* If this source output is not realized yet, we have to touch
557 * the thread info data directly */
558 usec = o->thread_info.requested_source_latency;
563 /* Called from main context */
564 void pa_source_output_cork(pa_source_output *o, pa_bool_t b) {
565 pa_source_output_assert_ref(o);
566 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
568 source_output_set_state(o, b ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING);
571 /* Called from main context */
572 int pa_source_output_set_rate(pa_source_output *o, uint32_t rate) {
573 pa_source_output_assert_ref(o);
574 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
575 pa_return_val_if_fail(o->thread_info.resampler, -1);
577 if (o->sample_spec.rate == rate)
580 o->sample_spec.rate = rate;
582 pa_asyncmsgq_post(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);
584 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
588 /* Called from main context */
589 void pa_source_output_set_name(pa_source_output *o, const char *name) {
591 pa_source_output_assert_ref(o);
593 if (!name && !pa_proplist_contains(o->proplist, PA_PROP_MEDIA_NAME))
596 old = pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME);
598 if (old && name && !strcmp(old, name))
602 pa_proplist_sets(o->proplist, PA_PROP_MEDIA_NAME, name);
604 pa_proplist_unset(o->proplist, PA_PROP_MEDIA_NAME);
606 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state)) {
607 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED], o);
608 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
612 /* Called from main thread */
613 pa_bool_t pa_source_output_update_proplist(pa_source_output *o, pa_update_mode_t mode, pa_proplist *p) {
615 pa_source_output_assert_ref(o);
617 pa_proplist_update(o->proplist, mode, p);
619 if (PA_SINK_IS_LINKED(o->state)) {
620 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED], o);
621 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
627 /* Called from main context */
628 pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o) {
629 pa_source_output_assert_ref(o);
631 return o->actual_resample_method;
634 /* Called from main context */
635 pa_bool_t pa_source_output_may_move(pa_source_output *o) {
636 pa_source_output_assert_ref(o);
637 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
639 if (o->flags & PA_SOURCE_OUTPUT_DONT_MOVE)
642 if (o->direct_on_input)
648 /* Called from main context */
649 pa_bool_t pa_source_output_may_move_to(pa_source_output *o, pa_source *dest) {
650 pa_source_output_assert_ref(o);
651 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
652 pa_source_assert_ref(dest);
654 if (dest == o->source)
657 if (!pa_source_output_may_move(o))
660 if (pa_idxset_size(dest->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
661 pa_log_warn("Failed to move source output: too many outputs per source.");
666 if (!o->may_move_to(o, dest))
672 /* Called from main context */
673 int pa_source_output_start_move(pa_source_output *o) {
676 pa_source_output_assert_ref(o);
677 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
678 pa_assert(o->source);
680 if (!pa_source_output_may_move(o))
683 if (pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_START], o) < 0)
688 pa_idxset_remove_by_data(o->source->outputs, o, NULL);
690 if (pa_source_output_get_state(o) == PA_SOURCE_OUTPUT_CORKED)
691 pa_assert_se(origin->n_corked-- >= 1);
693 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL) == 0);
695 pa_source_update_status(o->source);
701 /* Called from main context */
702 int pa_source_output_finish_move(pa_source_output *o, pa_source *dest) {
703 pa_resampler *new_resampler;
705 pa_source_output_assert_ref(o);
706 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
707 pa_assert(!o->source);
708 pa_source_assert_ref(dest);
710 if (!pa_source_output_may_move_to(o, dest))
714 pa_idxset_put(o->source->outputs, o, NULL);
716 if (pa_source_output_get_state(o) == PA_SOURCE_OUTPUT_CORKED)
717 o->source->n_corked++;
719 if (o->thread_info.resampler &&
720 pa_sample_spec_equal(pa_resampler_input_sample_spec(o->thread_info.resampler), &dest->sample_spec) &&
721 pa_channel_map_equal(pa_resampler_input_channel_map(o->thread_info.resampler), &dest->channel_map))
723 /* Try to reuse the old resampler if possible */
724 new_resampler = o->thread_info.resampler;
726 else if ((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
727 !pa_sample_spec_equal(&o->sample_spec, &dest->sample_spec) ||
728 !pa_channel_map_equal(&o->channel_map, &dest->channel_map)) {
730 /* Okey, we need a new resampler for the new source */
732 if (!(new_resampler = pa_resampler_new(
734 &dest->sample_spec, &dest->channel_map,
735 &o->sample_spec, &o->channel_map,
736 o->requested_resample_method,
737 ((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
738 ((o->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
739 (o->core->disable_remixing || (o->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0)))) {
740 pa_log_warn("Unsupported resampling operation.");
744 new_resampler = NULL;
746 /* Replace resampler */
747 if (new_resampler != o->thread_info.resampler) {
748 if (o->thread_info.resampler)
749 pa_resampler_free(o->thread_info.resampler);
750 o->thread_info.resampler = new_resampler;
752 pa_memblockq_free(o->thread_info.delay_memblockq);
754 o->thread_info.delay_memblockq = pa_memblockq_new(
758 pa_frame_size(&o->source->sample_spec),
762 &o->source->silence);
765 pa_source_update_status(dest);
766 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, o, 0, NULL) == 0);
768 pa_log_debug("Successfully moved source output %i to %s.", o->index, dest->name);
770 /* Notify everyone */
774 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FINISH], o);
775 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
780 /* Called from main context */
781 int pa_source_output_move_to(pa_source_output *o, pa_source *dest) {
783 pa_source_output_assert_ref(o);
784 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
785 pa_assert(o->source);
786 pa_source_assert_ref(dest);
788 if (dest == o->source)
791 if (!pa_source_output_may_move_to(o, dest))
794 if (pa_source_output_start_move(o) < 0)
797 if (pa_source_output_finish_move(o, dest) < 0)
803 /* Called from IO thread context */
804 void pa_source_output_set_state_within_thread(pa_source_output *o, pa_source_output_state_t state) {
805 pa_source_output_assert_ref(o);
807 if (state == o->thread_info.state)
811 o->state_change(o, state);
813 o->thread_info.state = state;
816 /* Called from IO thread context, except when it is not */
817 int pa_source_output_process_msg(pa_msgobject *mo, int code, void *userdata, int64_t offset, pa_memchunk* chunk) {
818 pa_source_output *o = PA_SOURCE_OUTPUT(mo);
819 pa_source_output_assert_ref(o);
823 case PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY: {
824 pa_usec_t *r = userdata;
825 pa_usec_t source_usec = 0;
827 r[0] += pa_bytes_to_usec(pa_memblockq_get_length(o->thread_info.delay_memblockq), &o->source->sample_spec);
829 if (o->source->parent.process_msg(PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_GET_LATENCY, &source_usec, 0, NULL) >= 0)
835 case PA_SOURCE_OUTPUT_MESSAGE_SET_RATE:
837 o->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
838 pa_resampler_set_output_rate(o->thread_info.resampler, PA_PTR_TO_UINT(userdata));
841 case PA_SOURCE_OUTPUT_MESSAGE_SET_STATE:
843 pa_source_output_set_state_within_thread(o, PA_PTR_TO_UINT(userdata));
846 case PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY: {
847 pa_usec_t *usec = userdata;
849 *usec = pa_source_output_set_requested_latency_within_thread(o, *usec);
854 case PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY: {
855 pa_usec_t *r = userdata;
857 *r = o->thread_info.requested_source_latency;