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) {
107 pa_resampler *resampler = NULL;
108 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 (data->flags & PA_SOURCE_OUTPUT_FIX_FORMAT)
150 data->sample_spec.format = data->source->sample_spec.format;
152 if (data->flags & PA_SOURCE_OUTPUT_FIX_RATE)
153 data->sample_spec.rate = data->source->sample_spec.rate;
155 if (data->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 ((data->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 ((data->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 ((data->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
192 ((data->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
193 (core->disable_remixing || (data->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;
206 o->flags = data->flags;
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 pt = pa_proplist_to_string_sep(o->proplist, "\n ");
252 pa_log_info("Created output %u \"%s\" on %s with sample spec %s and channel map %s\n %s",
254 pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)),
256 pa_sample_spec_snprint(st, sizeof(st), &o->sample_spec),
257 pa_channel_map_snprint(cm, sizeof(cm), &o->channel_map),
261 /* Don't forget to call pa_source_output_put! */
267 /* Called from main context */
268 static void update_n_corked(pa_source_output *o, pa_source_output_state_t state) {
270 pa_assert_ctl_context();
275 if (o->state == PA_SOURCE_OUTPUT_CORKED && state != PA_SOURCE_OUTPUT_CORKED)
276 pa_assert_se(o->source->n_corked -- >= 1);
277 else if (o->state != PA_SOURCE_OUTPUT_CORKED && state == PA_SOURCE_OUTPUT_CORKED)
278 o->source->n_corked++;
281 /* Called from main context */
282 static void source_output_set_state(pa_source_output *o, pa_source_output_state_t state) {
284 pa_assert_ctl_context();
286 if (o->state == state)
289 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);
291 update_n_corked(o, state);
294 if (state != PA_SOURCE_OUTPUT_UNLINKED)
295 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_STATE_CHANGED], o);
297 pa_source_update_status(o->source);
300 /* Called from main context */
301 void pa_source_output_unlink(pa_source_output*o) {
304 pa_assert_ctl_context();
306 /* See pa_sink_unlink() for a couple of comments how this function
309 pa_source_output_ref(o);
311 linked = PA_SOURCE_OUTPUT_IS_LINKED(o->state);
314 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK], o);
316 if (o->direct_on_input)
317 pa_idxset_remove_by_data(o->direct_on_input->direct_outputs, o, NULL);
319 pa_idxset_remove_by_data(o->core->source_outputs, o, NULL);
322 if (pa_idxset_remove_by_data(o->source->outputs, o, NULL))
323 pa_source_output_unref(o);
326 pa_idxset_remove_by_data(o->client->source_outputs, o, NULL);
328 update_n_corked(o, PA_SOURCE_OUTPUT_UNLINKED);
329 o->state = PA_SOURCE_OUTPUT_UNLINKED;
331 if (linked && o->source)
332 if (o->source->asyncmsgq)
333 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL) == 0);
338 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_REMOVE, o->index);
339 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK_POST], o);
343 pa_source_update_status(o->source);
347 pa_core_maybe_vacuum(o->core);
349 pa_source_output_unref(o);
352 /* Called from main context */
353 static void source_output_free(pa_object* mo) {
354 pa_source_output *o = PA_SOURCE_OUTPUT(mo);
357 pa_assert_ctl_context();
358 pa_assert(pa_source_output_refcnt(o) == 0);
360 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state))
361 pa_source_output_unlink(o);
363 pa_log_info("Freeing output %u \"%s\"", o->index, pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)));
365 if (o->thread_info.delay_memblockq)
366 pa_memblockq_free(o->thread_info.delay_memblockq);
368 if (o->thread_info.resampler)
369 pa_resampler_free(o->thread_info.resampler);
372 pa_proplist_free(o->proplist);
378 /* Called from main context */
379 void pa_source_output_put(pa_source_output *o) {
380 pa_source_output_state_t state;
382 pa_source_output_assert_ref(o);
383 pa_assert_ctl_context();
385 pa_assert(o->state == PA_SOURCE_OUTPUT_INIT);
387 /* The following fields must be initialized properly */
391 state = o->flags & PA_SOURCE_OUTPUT_START_CORKED ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING;
393 update_n_corked(o, state);
396 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, o, 0, NULL) == 0);
398 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_NEW, o->index);
399 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PUT], o);
401 pa_source_update_status(o->source);
404 /* Called from main context */
405 void pa_source_output_kill(pa_source_output*o) {
406 pa_source_output_assert_ref(o);
407 pa_assert_ctl_context();
408 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
413 /* Called from main context */
414 pa_usec_t pa_source_output_get_latency(pa_source_output *o, pa_usec_t *source_latency) {
415 pa_usec_t r[2] = { 0, 0 };
417 pa_source_output_assert_ref(o);
418 pa_assert_ctl_context();
419 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
421 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY, r, 0, NULL) == 0);
424 r[0] += o->get_latency(o);
427 *source_latency = r[1];
432 /* Called from thread context */
433 void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk) {
435 size_t limit, mbs = 0;
437 pa_source_output_assert_ref(o);
438 pa_source_output_assert_io_context(o);
439 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
441 pa_assert(pa_frame_aligned(chunk->length, &o->source->sample_spec));
443 if (!o->push || o->thread_info.state == PA_SOURCE_OUTPUT_CORKED)
446 pa_assert(o->thread_info.state == PA_SOURCE_OUTPUT_RUNNING);
448 if (pa_memblockq_push(o->thread_info.delay_memblockq, chunk) < 0) {
449 pa_log_debug("Delay queue overflow!");
450 pa_memblockq_seek(o->thread_info.delay_memblockq, (int64_t) chunk->length, PA_SEEK_RELATIVE, TRUE);
453 limit = o->process_rewind ? 0 : o->source->thread_info.max_rewind;
455 if (limit > 0 && o->source->monitor_of) {
459 /* Hmm, check the latency for knowing how much of the buffered
460 * data is actually still unplayed and might hence still
461 * change. This is suboptimal. Ideally we'd have a call like
462 * pa_sink_get_changeable_size() or so that tells us how much
463 * of the queued data is actually still changeable. Hence
466 latency = pa_sink_get_latency_within_thread(o->source->monitor_of);
468 n = pa_usec_to_bytes(latency, &o->source->sample_spec);
474 /* Implement the delay queue */
475 while ((length = pa_memblockq_get_length(o->thread_info.delay_memblockq)) > limit) {
480 pa_assert_se(pa_memblockq_peek(o->thread_info.delay_memblockq, &qchunk) >= 0);
482 if (qchunk.length > length)
483 qchunk.length = length;
485 pa_assert(qchunk.length > 0);
487 if (!o->thread_info.resampler)
493 mbs = pa_resampler_max_block_size(o->thread_info.resampler);
495 if (qchunk.length > mbs)
498 pa_resampler_run(o->thread_info.resampler, &qchunk, &rchunk);
500 if (rchunk.length > 0)
504 pa_memblock_unref(rchunk.memblock);
507 pa_memblock_unref(qchunk.memblock);
508 pa_memblockq_drop(o->thread_info.delay_memblockq, qchunk.length);
512 /* Called from thread context */
513 void pa_source_output_process_rewind(pa_source_output *o, size_t nbytes /* in source sample spec */) {
515 pa_source_output_assert_ref(o);
516 pa_source_output_assert_io_context(o);
517 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
518 pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));
523 if (o->process_rewind) {
524 pa_assert(pa_memblockq_get_length(o->thread_info.delay_memblockq) == 0);
526 if (o->thread_info.resampler)
527 nbytes = pa_resampler_result(o->thread_info.resampler, nbytes);
529 pa_log_debug("Have to rewind %lu bytes on implementor.", (unsigned long) nbytes);
532 o->process_rewind(o, nbytes);
534 if (o->thread_info.resampler)
535 pa_resampler_reset(o->thread_info.resampler);
538 pa_memblockq_rewind(o->thread_info.delay_memblockq, nbytes);
541 /* Called from thread context */
542 size_t pa_source_output_get_max_rewind(pa_source_output *o) {
543 pa_source_output_assert_ref(o);
544 pa_source_output_assert_io_context(o);
546 return o->thread_info.resampler ? pa_resampler_request(o->thread_info.resampler, o->source->thread_info.max_rewind) : o->source->thread_info.max_rewind;
549 /* Called from thread context */
550 void pa_source_output_update_max_rewind(pa_source_output *o, size_t nbytes /* in the source's sample spec */) {
551 pa_source_output_assert_ref(o);
552 pa_source_output_assert_io_context(o);
553 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
554 pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));
556 if (o->update_max_rewind)
557 o->update_max_rewind(o, o->thread_info.resampler ? pa_resampler_result(o->thread_info.resampler, nbytes) : nbytes);
560 /* Called from thread context */
561 pa_usec_t pa_source_output_set_requested_latency_within_thread(pa_source_output *o, pa_usec_t usec) {
562 pa_source_output_assert_ref(o);
563 pa_source_output_assert_io_context(o);
565 if (!(o->source->flags & PA_SOURCE_DYNAMIC_LATENCY))
566 usec = o->source->thread_info.fixed_latency;
568 if (usec != (pa_usec_t) -1)
569 usec = PA_CLAMP(usec, o->source->thread_info.min_latency, o->source->thread_info.max_latency);
571 o->thread_info.requested_source_latency = usec;
572 pa_source_invalidate_requested_latency(o->source, TRUE);
577 /* Called from main context */
578 pa_usec_t pa_source_output_set_requested_latency(pa_source_output *o, pa_usec_t usec) {
579 pa_source_output_assert_ref(o);
580 pa_assert_ctl_context();
582 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state) && o->source) {
583 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
587 /* If this source output is not realized yet or is being moved, we
588 * have to touch the thread info data directly */
591 if (!(o->source->flags & PA_SOURCE_DYNAMIC_LATENCY))
592 usec = pa_source_get_fixed_latency(o->source);
594 if (usec != (pa_usec_t) -1) {
595 pa_usec_t min_latency, max_latency;
596 pa_source_get_latency_range(o->source, &min_latency, &max_latency);
597 usec = PA_CLAMP(usec, min_latency, max_latency);
601 o->thread_info.requested_source_latency = usec;
606 /* Called from main context */
607 pa_usec_t pa_source_output_get_requested_latency(pa_source_output *o) {
608 pa_source_output_assert_ref(o);
609 pa_assert_ctl_context();
611 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state) && o->source) {
613 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
617 /* If this source output is not realized yet or is being moved, we
618 * have to touch the thread info data directly */
620 return o->thread_info.requested_source_latency;
623 /* Called from main context */
624 void pa_source_output_cork(pa_source_output *o, pa_bool_t b) {
625 pa_source_output_assert_ref(o);
626 pa_assert_ctl_context();
627 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
629 source_output_set_state(o, b ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING);
632 /* Called from main context */
633 int pa_source_output_set_rate(pa_source_output *o, uint32_t rate) {
634 pa_source_output_assert_ref(o);
635 pa_assert_ctl_context();
636 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
637 pa_return_val_if_fail(o->thread_info.resampler, -PA_ERR_BADSTATE);
639 if (o->sample_spec.rate == rate)
642 o->sample_spec.rate = rate;
644 pa_asyncmsgq_post(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);
646 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
650 /* Called from main context */
651 void pa_source_output_set_name(pa_source_output *o, const char *name) {
653 pa_assert_ctl_context();
654 pa_source_output_assert_ref(o);
656 if (!name && !pa_proplist_contains(o->proplist, PA_PROP_MEDIA_NAME))
659 old = pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME);
661 if (old && name && !strcmp(old, name))
665 pa_proplist_sets(o->proplist, PA_PROP_MEDIA_NAME, name);
667 pa_proplist_unset(o->proplist, PA_PROP_MEDIA_NAME);
669 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state)) {
670 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED], o);
671 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
675 /* Called from main thread */
676 void pa_source_output_update_proplist(pa_source_output *o, pa_update_mode_t mode, pa_proplist *p) {
677 pa_source_output_assert_ref(o);
678 pa_assert_ctl_context();
681 pa_proplist_update(o->proplist, mode, p);
683 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state)) {
684 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED], o);
685 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
689 /* Called from main context */
690 pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o) {
691 pa_source_output_assert_ref(o);
692 pa_assert_ctl_context();
694 return o->actual_resample_method;
697 /* Called from main context */
698 pa_bool_t pa_source_output_may_move(pa_source_output *o) {
699 pa_source_output_assert_ref(o);
700 pa_assert_ctl_context();
701 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
703 if (o->flags & PA_SOURCE_OUTPUT_DONT_MOVE)
706 if (o->direct_on_input)
712 /* Called from main context */
713 pa_bool_t pa_source_output_may_move_to(pa_source_output *o, pa_source *dest) {
714 pa_source_output_assert_ref(o);
715 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
716 pa_source_assert_ref(dest);
718 if (dest == o->source)
721 if (!pa_source_output_may_move(o))
724 if (pa_idxset_size(dest->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
725 pa_log_warn("Failed to move source output: too many outputs per source.");
730 if (!o->may_move_to(o, dest))
736 /* Called from main context */
737 int pa_source_output_start_move(pa_source_output *o) {
741 pa_source_output_assert_ref(o);
742 pa_assert_ctl_context();
743 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
744 pa_assert(o->source);
746 if (!pa_source_output_may_move(o))
747 return -PA_ERR_NOTSUPPORTED;
749 if ((r = pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_START], o)) < 0)
754 pa_idxset_remove_by_data(o->source->outputs, o, NULL);
756 if (pa_source_output_get_state(o) == PA_SOURCE_OUTPUT_CORKED)
757 pa_assert_se(origin->n_corked-- >= 1);
759 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL) == 0);
761 pa_source_update_status(o->source);
764 pa_source_output_unref(o);
769 /* Called from main context */
770 int pa_source_output_finish_move(pa_source_output *o, pa_source *dest, pa_bool_t save) {
771 pa_resampler *new_resampler;
773 pa_source_output_assert_ref(o);
774 pa_assert_ctl_context();
775 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
776 pa_assert(!o->source);
777 pa_source_assert_ref(dest);
779 if (!pa_source_output_may_move_to(o, dest))
782 if (o->thread_info.resampler &&
783 pa_sample_spec_equal(pa_resampler_input_sample_spec(o->thread_info.resampler), &dest->sample_spec) &&
784 pa_channel_map_equal(pa_resampler_input_channel_map(o->thread_info.resampler), &dest->channel_map))
786 /* Try to reuse the old resampler if possible */
787 new_resampler = o->thread_info.resampler;
789 else if ((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
790 !pa_sample_spec_equal(&o->sample_spec, &dest->sample_spec) ||
791 !pa_channel_map_equal(&o->channel_map, &dest->channel_map)) {
793 /* Okey, we need a new resampler for the new source */
795 if (!(new_resampler = pa_resampler_new(
797 &dest->sample_spec, &dest->channel_map,
798 &o->sample_spec, &o->channel_map,
799 o->requested_resample_method,
800 ((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
801 ((o->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
802 (o->core->disable_remixing || (o->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0)))) {
803 pa_log_warn("Unsupported resampling operation.");
804 return -PA_ERR_NOTSUPPORTED;
807 new_resampler = NULL;
813 o->save_source = save;
814 pa_idxset_put(o->source->outputs, pa_source_output_ref(o), NULL);
816 if (pa_source_output_get_state(o) == PA_SOURCE_OUTPUT_CORKED)
817 o->source->n_corked++;
819 /* Replace resampler */
820 if (new_resampler != o->thread_info.resampler) {
821 if (o->thread_info.resampler)
822 pa_resampler_free(o->thread_info.resampler);
823 o->thread_info.resampler = new_resampler;
825 pa_memblockq_free(o->thread_info.delay_memblockq);
827 o->thread_info.delay_memblockq = pa_memblockq_new(
831 pa_frame_size(&o->source->sample_spec),
835 &o->source->silence);
838 pa_source_update_status(dest);
840 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, o, 0, NULL) == 0);
842 pa_log_debug("Successfully moved source output %i to %s.", o->index, dest->name);
844 /* Notify everyone */
845 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FINISH], o);
846 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
851 /* Called from main context */
852 void pa_source_output_fail_move(pa_source_output *o) {
854 pa_source_output_assert_ref(o);
855 pa_assert_ctl_context();
856 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
857 pa_assert(!o->source);
859 /* Check if someone wants this source output? */
860 if (pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FAIL], o) == PA_HOOK_STOP)
866 pa_source_output_kill(o);
869 /* Called from main context */
870 int pa_source_output_move_to(pa_source_output *o, pa_source *dest, pa_bool_t save) {
873 pa_source_output_assert_ref(o);
874 pa_assert_ctl_context();
875 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
876 pa_assert(o->source);
877 pa_source_assert_ref(dest);
879 if (dest == o->source)
882 if (!pa_source_output_may_move_to(o, dest))
883 return -PA_ERR_NOTSUPPORTED;
885 pa_source_output_ref(o);
887 if ((r = pa_source_output_start_move(o)) < 0) {
888 pa_source_output_unref(o);
892 if ((r = pa_source_output_finish_move(o, dest, save)) < 0) {
893 pa_source_output_fail_move(o);
894 pa_source_output_unref(o);
898 pa_source_output_unref(o);
903 /* Called from IO thread context */
904 void pa_source_output_set_state_within_thread(pa_source_output *o, pa_source_output_state_t state) {
905 pa_source_output_assert_ref(o);
906 pa_source_output_assert_io_context(o);
908 if (state == o->thread_info.state)
912 o->state_change(o, state);
914 o->thread_info.state = state;
917 /* Called from IO thread context, except when it is not */
918 int pa_source_output_process_msg(pa_msgobject *mo, int code, void *userdata, int64_t offset, pa_memchunk* chunk) {
919 pa_source_output *o = PA_SOURCE_OUTPUT(mo);
920 pa_source_output_assert_ref(o);
924 case PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY: {
925 pa_usec_t *r = userdata;
927 r[0] += pa_bytes_to_usec(pa_memblockq_get_length(o->thread_info.delay_memblockq), &o->source->sample_spec);
928 r[1] += pa_source_get_latency_within_thread(o->source);
933 case PA_SOURCE_OUTPUT_MESSAGE_SET_RATE:
935 o->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
936 pa_resampler_set_output_rate(o->thread_info.resampler, PA_PTR_TO_UINT(userdata));
939 case PA_SOURCE_OUTPUT_MESSAGE_SET_STATE:
941 pa_source_output_set_state_within_thread(o, PA_PTR_TO_UINT(userdata));
944 case PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY: {
945 pa_usec_t *usec = userdata;
947 *usec = pa_source_output_set_requested_latency_within_thread(o, *usec);
952 case PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY: {
953 pa_usec_t *r = userdata;
955 *r = o->thread_info.requested_source_latency;
960 return -PA_ERR_NOTIMPLEMENTED;
963 /* Called from main context */
964 void pa_source_output_send_event(pa_source_output *o, const char *event, pa_proplist *data) {
965 pa_proplist *pl = NULL;
966 pa_source_output_send_event_hook_data hook_data;
968 pa_source_output_assert_ref(o);
969 pa_assert_ctl_context();
976 data = pl = pa_proplist_new();
978 hook_data.source_output = o;
979 hook_data.data = data;
980 hook_data.event = event;
982 if (pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_SEND_EVENT], &hook_data) < 0)
985 o->send_event(o, event, data);
989 pa_proplist_free(pl);