1 /***
2 This file is part of PulseAudio.
3
4 Copyright 2004-2006 Lennart Poettering
5
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.
10
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.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
18 ***/
19
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23
24 #include <stdio.h>
25 #include <stdlib.h>
26 #include <string.h>
27
28 #include <pulse/utf8.h>
29 #include <pulse/xmalloc.h>
30 #include <pulse/util.h>
31 #include <pulse/internal.h>
32 #include <pulse/timeval.h>
33
34 #include <pulsecore/core-format.h>
35 #include <pulsecore/mix.h>
36 #include <pulsecore/stream-util.h>
37 #include <pulsecore/core-subscribe.h>
38 #include <pulsecore/log.h>
39 #include <pulsecore/namereg.h>
40 #include <pulsecore/core-util.h>
41
42 #include "source-output.h"
43
44 #define MEMBLOCKQ_MAXLENGTH (32*1024*1024)
45
46 PA_DEFINE_PUBLIC_CLASS(pa_source_output, pa_msgobject);
47
48 static void source_output_free(pa_object* mo);
49 static void set_real_ratio(pa_source_output *o, const pa_cvolume *v);
50
pa_source_output_new_data_init(pa_source_output_new_data * data)51 pa_source_output_new_data* pa_source_output_new_data_init(pa_source_output_new_data *data) {
52 pa_assert(data);
53
54 pa_zero(*data);
55 data->resample_method = PA_RESAMPLER_INVALID;
56 data->proplist = pa_proplist_new();
57 data->volume_writable = true;
58
59 return data;
60 }
61
pa_source_output_new_data_set_sample_spec(pa_source_output_new_data * data,const pa_sample_spec * spec)62 void pa_source_output_new_data_set_sample_spec(pa_source_output_new_data *data, const pa_sample_spec *spec) {
63 pa_assert(data);
64
65 if ((data->sample_spec_is_set = !!spec))
66 data->sample_spec = *spec;
67 }
68
pa_source_output_new_data_set_channel_map(pa_source_output_new_data * data,const pa_channel_map * map)69 void pa_source_output_new_data_set_channel_map(pa_source_output_new_data *data, const pa_channel_map *map) {
70 pa_assert(data);
71
72 if ((data->channel_map_is_set = !!map))
73 data->channel_map = *map;
74 }
75
pa_source_output_new_data_is_passthrough(pa_source_output_new_data * data)76 bool pa_source_output_new_data_is_passthrough(pa_source_output_new_data *data) {
77 pa_assert(data);
78
79 if (PA_LIKELY(data->format) && PA_UNLIKELY(!pa_format_info_is_pcm(data->format)))
80 return true;
81
82 if (PA_UNLIKELY(data->flags & PA_SOURCE_OUTPUT_PASSTHROUGH))
83 return true;
84
85 return false;
86 }
87
pa_source_output_new_data_set_volume(pa_source_output_new_data * data,const pa_cvolume * volume)88 void pa_source_output_new_data_set_volume(pa_source_output_new_data *data, const pa_cvolume *volume) {
89 pa_assert(data);
90 pa_assert(data->volume_writable);
91
92 if ((data->volume_is_set = !!volume))
93 data->volume = *volume;
94 }
95
pa_source_output_new_data_apply_volume_factor(pa_source_output_new_data * data,const pa_cvolume * volume_factor)96 void pa_source_output_new_data_apply_volume_factor(pa_source_output_new_data *data, const pa_cvolume *volume_factor) {
97 pa_assert(data);
98 pa_assert(volume_factor);
99
100 if (data->volume_factor_is_set)
101 pa_sw_cvolume_multiply(&data->volume_factor, &data->volume_factor, volume_factor);
102 else {
103 data->volume_factor_is_set = true;
104 data->volume_factor = *volume_factor;
105 }
106 }
107
pa_source_output_new_data_apply_volume_factor_source(pa_source_output_new_data * data,const pa_cvolume * volume_factor)108 void pa_source_output_new_data_apply_volume_factor_source(pa_source_output_new_data *data, const pa_cvolume *volume_factor) {
109 pa_assert(data);
110 pa_assert(volume_factor);
111
112 if (data->volume_factor_source_is_set)
113 pa_sw_cvolume_multiply(&data->volume_factor_source, &data->volume_factor_source, volume_factor);
114 else {
115 data->volume_factor_source_is_set = true;
116 data->volume_factor_source = *volume_factor;
117 }
118 }
119
pa_source_output_new_data_set_muted(pa_source_output_new_data * data,bool mute)120 void pa_source_output_new_data_set_muted(pa_source_output_new_data *data, bool mute) {
121 pa_assert(data);
122
123 data->muted_is_set = true;
124 data->muted = mute;
125 }
126
pa_source_output_new_data_set_source(pa_source_output_new_data * data,pa_source * s,bool save,bool requested_by_application)127 bool pa_source_output_new_data_set_source(pa_source_output_new_data *data, pa_source *s, bool save,
128 bool requested_by_application) {
129 bool ret = true;
130 pa_idxset *formats = NULL;
131
132 pa_assert(data);
133 pa_assert(s);
134
135 if (!data->req_formats) {
136 /* We're not working with the extended API */
137 data->source = s;
138 if (save) {
139 pa_xfree(data->preferred_source);
140 data->preferred_source = pa_xstrdup(s->name);
141 }
142 data->source_requested_by_application = requested_by_application;
143 } else {
144 /* Extended API: let's see if this source supports the formats the client would like */
145 formats = pa_source_check_formats(s, data->req_formats);
146
147 if (formats && !pa_idxset_isempty(formats)) {
148 /* Source supports at least one of the requested formats */
149 data->source = s;
150 if (save) {
151 pa_xfree(data->preferred_source);
152 data->preferred_source = pa_xstrdup(s->name);
153 }
154 data->source_requested_by_application = requested_by_application;
155 if (data->nego_formats)
156 pa_idxset_free(data->nego_formats, (pa_free_cb_t) pa_format_info_free);
157 data->nego_formats = formats;
158 } else {
159 /* Source doesn't support any of the formats requested by the client */
160 if (formats)
161 pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
162 ret = false;
163 }
164 }
165
166 return ret;
167 }
168
pa_source_output_new_data_set_formats(pa_source_output_new_data * data,pa_idxset * formats)169 bool pa_source_output_new_data_set_formats(pa_source_output_new_data *data, pa_idxset *formats) {
170 pa_assert(data);
171 pa_assert(formats);
172
173 if (data->req_formats)
174 pa_idxset_free(data->req_formats, (pa_free_cb_t) pa_format_info_free);
175
176 data->req_formats = formats;
177
178 if (data->source) {
179 /* Trigger format negotiation */
180 return pa_source_output_new_data_set_source(data, data->source, (data->preferred_source != NULL),
181 data->source_requested_by_application);
182 }
183
184 return true;
185 }
186
pa_source_output_new_data_done(pa_source_output_new_data * data)187 void pa_source_output_new_data_done(pa_source_output_new_data *data) {
188 pa_assert(data);
189
190 if (data->req_formats)
191 pa_idxset_free(data->req_formats, (pa_free_cb_t) pa_format_info_free);
192
193 if (data->nego_formats)
194 pa_idxset_free(data->nego_formats, (pa_free_cb_t) pa_format_info_free);
195
196 if (data->format)
197 pa_format_info_free(data->format);
198
199 if (data->preferred_source)
200 pa_xfree(data->preferred_source);
201
202 pa_proplist_free(data->proplist);
203 }
204
205 /* Called from main context */
reset_callbacks(pa_source_output * o)206 static void reset_callbacks(pa_source_output *o) {
207 pa_assert(o);
208
209 o->push = NULL;
210 o->process_rewind = NULL;
211 o->update_max_rewind = NULL;
212 o->update_source_requested_latency = NULL;
213 o->update_source_latency_range = NULL;
214 o->update_source_fixed_latency = NULL;
215 o->attach = NULL;
216 o->detach = NULL;
217 o->suspend = NULL;
218 o->suspend_within_thread = NULL;
219 o->moving = NULL;
220 o->kill = NULL;
221 o->get_latency = NULL;
222 o->state_change = NULL;
223 o->may_move_to = NULL;
224 o->send_event = NULL;
225 o->volume_changed = NULL;
226 o->mute_changed = NULL;
227 }
228
229 /* Called from main context */
pa_source_output_new(pa_source_output ** _o,pa_core * core,pa_source_output_new_data * data)230 int pa_source_output_new(
231 pa_source_output**_o,
232 pa_core *core,
233 pa_source_output_new_data *data) {
234
235 pa_source_output *o;
236 pa_resampler *resampler = NULL;
237 char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX], fmt[PA_FORMAT_INFO_SNPRINT_MAX];
238 pa_channel_map volume_map;
239 int r;
240 char *pt;
241 size_t resampler_history;
242
243 pa_assert(_o);
244 pa_assert(core);
245 pa_assert(data);
246 pa_assert_ctl_context();
247
248 if (data->client)
249 pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->client->proplist);
250
251 if (data->destination_source && (data->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
252 data->volume_writable = false;
253
254 if (!data->req_formats) {
255 /* From this point on, we want to work only with formats, and get back
256 * to using the sample spec and channel map after all decisions w.r.t.
257 * routing are complete. */
258 pa_format_info *f;
259 pa_idxset *formats;
260
261 f = pa_format_info_from_sample_spec2(&data->sample_spec, data->channel_map_is_set ? &data->channel_map : NULL,
262 !(data->flags & PA_SOURCE_OUTPUT_FIX_FORMAT),
263 !(data->flags & PA_SOURCE_OUTPUT_FIX_RATE),
264 !(data->flags & PA_SOURCE_OUTPUT_FIX_CHANNELS));
265 if (!f)
266 return -PA_ERR_INVALID;
267
268 formats = pa_idxset_new(NULL, NULL);
269 pa_idxset_put(formats, f, NULL);
270 pa_source_output_new_data_set_formats(data, formats);
271 }
272
273 if ((r = pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_NEW], data)) < 0)
274 return r;
275
276 pa_return_val_if_fail(!data->driver || pa_utf8_valid(data->driver), -PA_ERR_INVALID);
277
278 if (!data->source) {
279 pa_source *source;
280
281 if (data->direct_on_input) {
282 source = data->direct_on_input->sink->monitor_source;
283 pa_return_val_if_fail(source, -PA_ERR_INVALID);
284 } else {
285 source = pa_namereg_get(core, NULL, PA_NAMEREG_SOURCE);
286 pa_return_val_if_fail(source, -PA_ERR_NOENTITY);
287 }
288
289 pa_source_output_new_data_set_source(data, source, false, false);
290 }
291
292 /* If something didn't pick a format for us, pick the top-most format since
293 * we assume this is sorted in priority order */
294 if (!data->format && data->nego_formats && !pa_idxset_isempty(data->nego_formats))
295 data->format = pa_format_info_copy(pa_idxset_first(data->nego_formats, NULL));
296
297 if (PA_LIKELY(data->format)) {
298 /* We know that data->source is set, because data->format has been set.
299 * data->format is set after a successful format negotiation, and that
300 * can't happen before data->source has been set. */
301 pa_assert(data->source);
302
303 pa_log_debug("Negotiated format: %s", pa_format_info_snprint(fmt, sizeof(fmt), data->format));
304 } else {
305 pa_format_info *format;
306 uint32_t idx;
307
308 pa_log_info("Source does not support any requested format:");
309 PA_IDXSET_FOREACH(format, data->req_formats, idx)
310 pa_log_info(" -- %s", pa_format_info_snprint(fmt, sizeof(fmt), format));
311
312 return -PA_ERR_NOTSUPPORTED;
313 }
314
315 pa_return_val_if_fail(PA_SOURCE_IS_LINKED(data->source->state), -PA_ERR_BADSTATE);
316 pa_return_val_if_fail(!data->direct_on_input || data->direct_on_input->sink == data->source->monitor_of, -PA_ERR_INVALID);
317
318 /* Routing is done. We have a source and a format. */
319
320 if (data->volume_is_set && !pa_source_output_new_data_is_passthrough(data)) {
321 /* If volume is set, we need to save the original data->channel_map,
322 * so that we can remap the volume from the original channel map to the
323 * final channel map of the stream in case data->channel_map gets
324 * modified in pa_format_info_to_sample_spec2(). */
325 r = pa_stream_get_volume_channel_map(&data->volume, data->channel_map_is_set ? &data->channel_map : NULL, data->format, &volume_map);
326 if (r < 0)
327 return r;
328 } else {
329 /* Initialize volume_map to invalid state. We check the state later to
330 * determine if volume remapping is needed. */
331 pa_channel_map_init(&volume_map);
332 }
333
334 /* Now populate the sample spec and channel map according to the final
335 * format that we've negotiated */
336 r = pa_format_info_to_sample_spec2(data->format, &data->sample_spec, &data->channel_map, &data->source->sample_spec,
337 &data->source->channel_map);
338 if (r < 0)
339 return r;
340
341 /* Don't restore (or save) stream volume for passthrough streams and
342 * prevent attenuation/gain */
343 if (pa_source_output_new_data_is_passthrough(data)) {
344 data->volume_is_set = true;
345 pa_cvolume_reset(&data->volume, data->sample_spec.channels);
346 data->volume_is_absolute = true;
347 data->save_volume = false;
348 }
349
350 if (!data->volume_is_set) {
351 pa_cvolume_reset(&data->volume, data->sample_spec.channels);
352 data->volume_is_absolute = false;
353 data->save_volume = false;
354 }
355
356 if (!data->volume_writable)
357 data->save_volume = false;
358
359 if (pa_channel_map_valid(&volume_map))
360 /* The original volume channel map may be different than the final
361 * stream channel map, so remapping may be needed. */
362 pa_cvolume_remap(&data->volume, &volume_map, &data->channel_map);
363
364 if (!data->volume_factor_is_set)
365 pa_cvolume_reset(&data->volume_factor, data->sample_spec.channels);
366
367 pa_return_val_if_fail(pa_cvolume_compatible(&data->volume_factor, &data->sample_spec), -PA_ERR_INVALID);
368
369 if (!data->volume_factor_source_is_set)
370 pa_cvolume_reset(&data->volume_factor_source, data->source->sample_spec.channels);
371
372 pa_return_val_if_fail(pa_cvolume_compatible(&data->volume_factor_source, &data->source->sample_spec), -PA_ERR_INVALID);
373
374 if (!data->muted_is_set)
375 data->muted = false;
376
377 if (!(data->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) &&
378 !pa_sample_spec_equal(&data->sample_spec, &data->source->sample_spec)) {
379 /* try to change source format and rate. This is done before the FIXATE hook since
380 module-suspend-on-idle can resume a source */
381
382 pa_log_info("Trying to change sample spec");
383 pa_source_reconfigure(data->source, &data->sample_spec, pa_source_output_new_data_is_passthrough(data));
384 }
385
386 if (pa_source_output_new_data_is_passthrough(data) &&
387 !pa_sample_spec_equal(&data->sample_spec, &data->source->sample_spec)) {
388 /* rate update failed, or other parts of sample spec didn't match */
389
390 pa_log_debug("Could not update source sample spec to match passthrough stream");
391 return -PA_ERR_NOTSUPPORTED;
392 }
393
394 if (data->resample_method == PA_RESAMPLER_INVALID)
395 data->resample_method = core->resample_method;
396
397 pa_return_val_if_fail(data->resample_method < PA_RESAMPLER_MAX, -PA_ERR_INVALID);
398
399 if ((r = pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_FIXATE], data)) < 0)
400 return r;
401
402 if ((data->flags & PA_SOURCE_OUTPUT_NO_CREATE_ON_SUSPEND) &&
403 data->source->state == PA_SOURCE_SUSPENDED) {
404 pa_log("Failed to create source output: source is suspended.");
405 return -PA_ERR_BADSTATE;
406 }
407
408 if (pa_idxset_size(data->source->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
409 pa_log("Failed to create source output: too many outputs per source.");
410 return -PA_ERR_TOOLARGE;
411 }
412
413 if ((data->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
414 !pa_sample_spec_equal(&data->sample_spec, &data->source->sample_spec) ||
415 !pa_channel_map_equal(&data->channel_map, &data->source->channel_map)) {
416
417 if (!pa_source_output_new_data_is_passthrough(data)) /* no resampler for passthrough content */
418 if (!(resampler = pa_resampler_new(
419 core->mempool,
420 &data->source->sample_spec, &data->source->channel_map,
421 &data->sample_spec, &data->channel_map,
422 core->lfe_crossover_freq,
423 data->resample_method,
424 ((data->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
425 ((data->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
426 (core->disable_remixing || (data->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0) |
427 (core->remixing_use_all_sink_channels ? 0 : PA_RESAMPLER_NO_FILL_SINK) |
428 (core->remixing_produce_lfe ? PA_RESAMPLER_PRODUCE_LFE : 0) |
429 (core->remixing_consume_lfe ? PA_RESAMPLER_CONSUME_LFE : 0)))) {
430 pa_log_warn("Unsupported resampling operation.");
431 return -PA_ERR_NOTSUPPORTED;
432 }
433 }
434
435 o = pa_msgobject_new(pa_source_output);
436 o->parent.parent.free = source_output_free;
437 o->parent.process_msg = pa_source_output_process_msg;
438
439 o->core = core;
440 o->state = PA_SOURCE_OUTPUT_INIT;
441 o->flags = data->flags;
442 o->proplist = pa_proplist_copy(data->proplist);
443 o->driver = pa_xstrdup(pa_path_get_filename(data->driver));
444 o->module = data->module;
445 o->source = data->source;
446 o->source_requested_by_application = data->source_requested_by_application;
447 o->destination_source = data->destination_source;
448 o->client = data->client;
449
450 o->requested_resample_method = data->resample_method;
451 o->actual_resample_method = resampler ? pa_resampler_get_method(resampler) : PA_RESAMPLER_INVALID;
452 o->sample_spec = data->sample_spec;
453 o->channel_map = data->channel_map;
454 o->format = pa_format_info_copy(data->format);
455
456 if (!data->volume_is_absolute && pa_source_flat_volume_enabled(o->source)) {
457 pa_cvolume remapped;
458
459 /* When the 'absolute' bool is not set then we'll treat the volume
460 * as relative to the source volume even in flat volume mode */
461 remapped = data->source->reference_volume;
462 pa_cvolume_remap(&remapped, &data->source->channel_map, &data->channel_map);
463 pa_sw_cvolume_multiply(&o->volume, &data->volume, &remapped);
464 } else
465 o->volume = data->volume;
466
467 o->volume_factor = data->volume_factor;
468 o->volume_factor_source = data->volume_factor_source;
469 o->real_ratio = o->reference_ratio = data->volume;
470 pa_cvolume_reset(&o->soft_volume, o->sample_spec.channels);
471 pa_cvolume_reset(&o->real_ratio, o->sample_spec.channels);
472 o->volume_writable = data->volume_writable;
473 o->save_volume = data->save_volume;
474 o->preferred_source = pa_xstrdup(data->preferred_source);
475 o->save_muted = data->save_muted;
476
477 o->muted = data->muted;
478
479 o->direct_on_input = data->direct_on_input;
480
481 reset_callbacks(o);
482 o->userdata = NULL;
483
484 o->thread_info.state = o->state;
485 o->thread_info.attached = false;
486 o->thread_info.sample_spec = o->sample_spec;
487 o->thread_info.resampler = resampler;
488 o->thread_info.soft_volume = o->soft_volume;
489 o->thread_info.muted = o->muted;
490 o->thread_info.requested_source_latency = (pa_usec_t) -1;
491 o->thread_info.direct_on_input = o->direct_on_input;
492
493 o->thread_info.delay_memblockq = pa_memblockq_new(
494 "source output delay_memblockq",
495 0,
496 MEMBLOCKQ_MAXLENGTH,
497 0,
498 &o->source->sample_spec,
499 0,
500 1,
501 0,
502 &o->source->silence);
503
504 resampler_history = (uint64_t) PA_RESAMPLER_MAX_DELAY_USEC * o->source->sample_spec.rate / PA_USEC_PER_SEC;
505 resampler_history *= pa_frame_size(&o->source->sample_spec);
506
507 pa_memblockq_set_maxrewind(o->thread_info.delay_memblockq, resampler_history + pa_source_get_max_rewind(o->source));
508
509 pa_assert_se(pa_idxset_put(core->source_outputs, o, &o->index) == 0);
510 pa_assert_se(pa_idxset_put(o->source->outputs, pa_source_output_ref(o), NULL) == 0);
511
512 if (o->client)
513 pa_assert_se(pa_idxset_put(o->client->source_outputs, o, NULL) >= 0);
514
515 if (o->direct_on_input)
516 pa_assert_se(pa_idxset_put(o->direct_on_input->direct_outputs, o, NULL) == 0);
517
518 pt = pa_proplist_to_string_sep(o->proplist, "\n ");
519 pa_log_info("Created output %u \"%s\" on %s with sample spec %s and channel map %s\n %s",
520 o->index,
521 pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)),
522 o->source->name,
523 pa_sample_spec_snprint(st, sizeof(st), &o->sample_spec),
524 pa_channel_map_snprint(cm, sizeof(cm), &o->channel_map),
525 pt);
526 pa_xfree(pt);
527
528 /* Don't forget to call pa_source_output_put! */
529
530 *_o = o;
531 return 0;
532 }
533
534 /* Called from main context */
update_n_corked(pa_source_output * o,pa_source_output_state_t state)535 static void update_n_corked(pa_source_output *o, pa_source_output_state_t state) {
536 pa_assert(o);
537 pa_assert_ctl_context();
538
539 if (!o->source)
540 return;
541
542 if (o->state == PA_SOURCE_OUTPUT_CORKED && state != PA_SOURCE_OUTPUT_CORKED)
543 pa_assert_se(o->source->n_corked -- >= 1);
544 else if (o->state != PA_SOURCE_OUTPUT_CORKED && state == PA_SOURCE_OUTPUT_CORKED)
545 o->source->n_corked++;
546 }
547
548 /* Called from main context */
source_output_set_state(pa_source_output * o,pa_source_output_state_t state)549 static void source_output_set_state(pa_source_output *o, pa_source_output_state_t state) {
550
551 pa_assert(o);
552 pa_assert_ctl_context();
553
554 if (o->state == state)
555 return;
556
557 if (o->source) {
558 if (o->state == PA_SOURCE_OUTPUT_CORKED && state == PA_SOURCE_OUTPUT_RUNNING && pa_source_used_by(o->source) == 0 &&
559 !pa_sample_spec_equal(&o->sample_spec, &o->source->sample_spec)) {
560 /* We were uncorked and the source was not playing anything -- let's try
561 * to update the sample format and rate to avoid resampling */
562 pa_source_reconfigure(o->source, &o->sample_spec, pa_source_output_is_passthrough(o));
563 }
564
565 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);
566 } else
567 /* If the source is not valid, pa_source_output_set_state_within_thread() must be called directly */
568 pa_source_output_set_state_within_thread(o, state);
569
570 update_n_corked(o, state);
571 o->state = state;
572
573 if (state != PA_SOURCE_OUTPUT_UNLINKED) {
574 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_STATE_CHANGED], o);
575
576 if (PA_SOURCE_OUTPUT_IS_LINKED(state))
577 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
578 }
579
580 if (o->source)
581 pa_source_update_status(o->source);
582 }
583
584 /* Called from main context */
pa_source_output_unlink(pa_source_output * o)585 void pa_source_output_unlink(pa_source_output*o) {
586 bool linked;
587
588 pa_source_output_assert_ref(o);
589 pa_assert_ctl_context();
590
591 /* See pa_sink_unlink() for a couple of comments how this function
592 * works */
593
594 pa_source_output_ref(o);
595
596 linked = PA_SOURCE_OUTPUT_IS_LINKED(o->state);
597
598 if (linked)
599 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK], o);
600
601 if (o->direct_on_input)
602 pa_idxset_remove_by_data(o->direct_on_input->direct_outputs, o, NULL);
603
604 pa_idxset_remove_by_data(o->core->source_outputs, o, NULL);
605
606 if (o->source)
607 if (pa_idxset_remove_by_data(o->source->outputs, o, NULL))
608 pa_source_output_unref(o);
609
610 if (o->client)
611 pa_idxset_remove_by_data(o->client->source_outputs, o, NULL);
612
613 update_n_corked(o, PA_SOURCE_OUTPUT_UNLINKED);
614 o->state = PA_SOURCE_OUTPUT_UNLINKED;
615
616 if (linked && o->source) {
617 if (pa_source_output_is_passthrough(o))
618 pa_source_leave_passthrough(o->source);
619
620 /* We might need to update the source's volume if we are in flat volume mode. */
621 if (pa_source_flat_volume_enabled(o->source))
622 pa_source_set_volume(o->source, NULL, false, false);
623
624 if (o->source->asyncmsgq)
625 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL) == 0);
626 }
627
628 reset_callbacks(o);
629
630 if (o->source) {
631 if (PA_SOURCE_IS_LINKED(o->source->state))
632 pa_source_update_status(o->source);
633
634 o->source = NULL;
635 }
636
637 if (linked) {
638 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_REMOVE, o->index);
639 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK_POST], o);
640 }
641
642 pa_core_maybe_vacuum(o->core);
643
644 pa_source_output_unref(o);
645 }
646
647 /* Called from main context */
source_output_free(pa_object * mo)648 static void source_output_free(pa_object* mo) {
649 pa_source_output *o = PA_SOURCE_OUTPUT(mo);
650
651 pa_assert(o);
652 pa_assert_ctl_context();
653 pa_assert(pa_source_output_refcnt(o) == 0);
654 pa_assert(!PA_SOURCE_OUTPUT_IS_LINKED(o->state));
655
656 pa_log_info("Freeing output %u \"%s\"", o->index,
657 o->proplist ? pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)) : "");
658
659 if (o->thread_info.delay_memblockq)
660 pa_memblockq_free(o->thread_info.delay_memblockq);
661
662 if (o->thread_info.resampler)
663 pa_resampler_free(o->thread_info.resampler);
664
665 if (o->format)
666 pa_format_info_free(o->format);
667
668 if (o->proplist)
669 pa_proplist_free(o->proplist);
670
671 if (o->preferred_source)
672 pa_xfree(o->preferred_source);
673
674 pa_xfree(o->driver);
675 pa_xfree(o);
676 }
677
678 /* Called from main context */
pa_source_output_put(pa_source_output * o)679 void pa_source_output_put(pa_source_output *o) {
680 pa_source_output_state_t state;
681
682 pa_source_output_assert_ref(o);
683 pa_assert_ctl_context();
684
685 pa_assert(o->state == PA_SOURCE_OUTPUT_INIT);
686
687 /* The following fields must be initialized properly */
688 pa_assert(o->push);
689 pa_assert(o->kill);
690
691 state = o->flags & PA_SOURCE_OUTPUT_START_CORKED ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING;
692
693 update_n_corked(o, state);
694 o->state = state;
695
696 /* We might need to update the source's volume if we are in flat volume mode. */
697 if (pa_source_flat_volume_enabled(o->source))
698 pa_source_set_volume(o->source, NULL, false, o->save_volume);
699 else {
700 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
701 pa_assert(pa_cvolume_is_norm(&o->volume));
702 pa_assert(pa_cvolume_is_norm(&o->reference_ratio));
703 }
704
705 set_real_ratio(o, &o->volume);
706 }
707
708 if (pa_source_output_is_passthrough(o))
709 pa_source_enter_passthrough(o->source);
710
711 o->thread_info.soft_volume = o->soft_volume;
712 o->thread_info.muted = o->muted;
713
714 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, o, 0, NULL) == 0);
715
716 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_NEW, o->index);
717 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PUT], o);
718
719 pa_source_update_status(o->source);
720 }
721
722 /* Called from main context */
pa_source_output_kill(pa_source_output * o)723 void pa_source_output_kill(pa_source_output*o) {
724 pa_source_output_assert_ref(o);
725 pa_assert_ctl_context();
726 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
727
728 o->kill(o);
729 }
730
731 /* Called from main context */
pa_source_output_get_latency(pa_source_output * o,pa_usec_t * source_latency)732 pa_usec_t pa_source_output_get_latency(pa_source_output *o, pa_usec_t *source_latency) {
733 pa_usec_t r[2] = { 0, 0 };
734
735 pa_source_output_assert_ref(o);
736 pa_assert_ctl_context();
737 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
738
739 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY, r, 0, NULL) == 0);
740
741 if (o->get_latency)
742 r[0] += o->get_latency(o);
743
744 if (source_latency)
745 *source_latency = r[1];
746
747 return r[0];
748 }
749
750 /* Called from thread context */
pa_source_output_push(pa_source_output * o,const pa_memchunk * chunk)751 void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk) {
752 bool need_volume_factor_source;
753 bool volume_is_norm;
754 size_t length;
755 size_t limit, mbs = 0;
756
757 pa_source_output_assert_ref(o);
758 pa_source_output_assert_io_context(o);
759 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
760 pa_assert(chunk);
761 pa_assert(pa_frame_aligned(chunk->length, &o->source->sample_spec));
762
763 if (!o->push || o->thread_info.state == PA_SOURCE_OUTPUT_CORKED)
764 return;
765
766 pa_assert(o->thread_info.state == PA_SOURCE_OUTPUT_RUNNING);
767
768 if (pa_memblockq_push(o->thread_info.delay_memblockq, chunk) < 0) {
769 pa_log_debug("Delay queue overflow!");
770 pa_memblockq_seek(o->thread_info.delay_memblockq, (int64_t) chunk->length, PA_SEEK_RELATIVE, true);
771 }
772
773 limit = o->process_rewind ? 0 : o->source->thread_info.max_rewind;
774
775 volume_is_norm = pa_cvolume_is_norm(&o->thread_info.soft_volume) && !o->thread_info.muted;
776 need_volume_factor_source = !pa_cvolume_is_norm(&o->volume_factor_source);
777
778 if (limit > 0 && o->source->monitor_of) {
779 pa_usec_t latency;
780 size_t n;
781
782 /* Hmm, check the latency for knowing how much of the buffered
783 * data is actually still unplayed and might hence still
784 * change. This is suboptimal. Ideally we'd have a call like
785 * pa_sink_get_changeable_size() or so that tells us how much
786 * of the queued data is actually still changeable. Hence
787 * FIXME! */
788
789 latency = pa_sink_get_latency_within_thread(o->source->monitor_of, false);
790
791 n = pa_usec_to_bytes(latency, &o->source->sample_spec);
792
793 if (n < limit)
794 limit = n;
795 }
796
797 /* Implement the delay queue */
798 while ((length = pa_memblockq_get_length(o->thread_info.delay_memblockq)) > limit) {
799 pa_memchunk qchunk;
800 bool nvfs = need_volume_factor_source;
801
802 length -= limit;
803
804 pa_assert_se(pa_memblockq_peek(o->thread_info.delay_memblockq, &qchunk) >= 0);
805
806 if (qchunk.length > length)
807 qchunk.length = length;
808
809 pa_assert(qchunk.length > 0);
810
811 /* It might be necessary to adjust the volume here */
812 if (!volume_is_norm) {
813 pa_memchunk_make_writable(&qchunk, 0);
814
815 if (o->thread_info.muted) {
816 pa_silence_memchunk(&qchunk, &o->source->sample_spec);
817 nvfs = false;
818
819 } else if (!o->thread_info.resampler && nvfs) {
820 pa_cvolume v;
821
822 /* If we don't need a resampler we can merge the
823 * post and the pre volume adjustment into one */
824
825 pa_sw_cvolume_multiply(&v, &o->thread_info.soft_volume, &o->volume_factor_source);
826 pa_volume_memchunk(&qchunk, &o->source->sample_spec, &v);
827 nvfs = false;
828
829 } else
830 pa_volume_memchunk(&qchunk, &o->source->sample_spec, &o->thread_info.soft_volume);
831 }
832
833 if (nvfs) {
834 pa_memchunk_make_writable(&qchunk, 0);
835 pa_volume_memchunk(&qchunk, &o->source->sample_spec, &o->volume_factor_source);
836 }
837
838 if (!o->thread_info.resampler)
839 o->push(o, &qchunk);
840 else {
841 pa_memchunk rchunk;
842
843 if (mbs == 0)
844 mbs = pa_resampler_max_block_size(o->thread_info.resampler);
845
846 if (qchunk.length > mbs)
847 qchunk.length = mbs;
848
849 pa_resampler_run(o->thread_info.resampler, &qchunk, &rchunk);
850
851 if (rchunk.length > 0)
852 o->push(o, &rchunk);
853
854 if (rchunk.memblock)
855 pa_memblock_unref(rchunk.memblock);
856 }
857
858 pa_memblock_unref(qchunk.memblock);
859 pa_memblockq_drop(o->thread_info.delay_memblockq, qchunk.length);
860 }
861 }
862
863 /* Called from thread context */
pa_source_output_process_rewind(pa_source_output * o,size_t nbytes)864 void pa_source_output_process_rewind(pa_source_output *o, size_t nbytes /* in source sample spec */) {
865
866 pa_source_output_assert_ref(o);
867 pa_source_output_assert_io_context(o);
868 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
869 pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));
870
871 if (nbytes <= 0)
872 return;
873
874 if (o->process_rewind) {
875 size_t source_output_nbytes;
876 size_t length;
877
878 /* The length of the memblockq may be non-zero if pa_source_output_rewind() is called twice
879 * without pa_source_output_push() called in between. In that case, the resampler has already
880 * been reset and we can skip that part. */
881 length = pa_memblockq_get_length(o->thread_info.delay_memblockq);
882
883 pa_memblockq_rewind(o->thread_info.delay_memblockq, nbytes);
884
885 source_output_nbytes = pa_resampler_result(o->thread_info.resampler, nbytes);
886
887 pa_log_debug("Have to rewind %lu bytes on implementor.", (unsigned long) source_output_nbytes);
888
889 if (source_output_nbytes > 0)
890 o->process_rewind(o, source_output_nbytes);
891
892 if (o->thread_info.resampler && length == 0) {
893 size_t resampler_bytes;
894
895 /* Round down to full frames */
896 resampler_bytes = (size_t) pa_resampler_get_delay(o->thread_info.resampler, false) * pa_frame_size(&o->source->sample_spec);
897 if (resampler_bytes > 0)
898 pa_memblockq_rewind(o->thread_info.delay_memblockq, resampler_bytes);
899
900 pa_resampler_rewind(o->thread_info.resampler, source_output_nbytes, NULL, 0);
901 }
902 }
903
904 pa_memblockq_seek(o->thread_info.delay_memblockq, - ((int64_t) nbytes), PA_SEEK_RELATIVE, true);
905 }
906
907 /* Called from thread context */
pa_source_output_get_max_rewind(pa_source_output * o)908 size_t pa_source_output_get_max_rewind(pa_source_output *o) {
909 pa_source_output_assert_ref(o);
910 pa_source_output_assert_io_context(o);
911
912 return pa_resampler_result(o->thread_info.resampler, o->source->thread_info.max_rewind);
913 }
914
915 /* Called from thread context */
pa_source_output_update_max_rewind(pa_source_output * o,size_t nbytes)916 void pa_source_output_update_max_rewind(pa_source_output *o, size_t nbytes /* in the source's sample spec */) {
917 size_t resampler_history;
918
919 pa_source_output_assert_ref(o);
920 pa_source_output_assert_io_context(o);
921 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
922 pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));
923
924 resampler_history = (uint64_t) PA_RESAMPLER_MAX_DELAY_USEC * o->source->sample_spec.rate / PA_USEC_PER_SEC;
925 resampler_history *= pa_frame_size(&o->source->sample_spec);
926
927 pa_memblockq_set_maxrewind(o->thread_info.delay_memblockq, resampler_history + nbytes);
928
929 if (o->update_max_rewind)
930 o->update_max_rewind(o, pa_resampler_result(o->thread_info.resampler, nbytes));
931 }
932
933 /* Called from thread context */
pa_source_output_set_requested_latency_within_thread(pa_source_output * o,pa_usec_t usec)934 pa_usec_t pa_source_output_set_requested_latency_within_thread(pa_source_output *o, pa_usec_t usec) {
935 pa_source_output_assert_ref(o);
936 pa_source_output_assert_io_context(o);
937
938 if (!(o->source->flags & PA_SOURCE_DYNAMIC_LATENCY))
939 usec = o->source->thread_info.fixed_latency;
940
941 if (usec != (pa_usec_t) -1)
942 usec = PA_CLAMP(usec, o->source->thread_info.min_latency, o->source->thread_info.max_latency);
943
944 o->thread_info.requested_source_latency = usec;
945 pa_source_invalidate_requested_latency(o->source, true);
946
947 return usec;
948 }
949
950 /* Called from main context */
pa_source_output_set_requested_latency(pa_source_output * o,pa_usec_t usec)951 pa_usec_t pa_source_output_set_requested_latency(pa_source_output *o, pa_usec_t usec) {
952 pa_source_output_assert_ref(o);
953 pa_assert_ctl_context();
954
955 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state) && o->source) {
956 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
957 return usec;
958 }
959
960 /* If this source output is not realized yet or is being moved, we
961 * have to touch the thread info data directly */
962
963 if (o->source) {
964 if (!(o->source->flags & PA_SOURCE_DYNAMIC_LATENCY))
965 usec = pa_source_get_fixed_latency(o->source);
966
967 if (usec != (pa_usec_t) -1) {
968 pa_usec_t min_latency, max_latency;
969 pa_source_get_latency_range(o->source, &min_latency, &max_latency);
970 usec = PA_CLAMP(usec, min_latency, max_latency);
971 }
972 }
973
974 o->thread_info.requested_source_latency = usec;
975
976 return usec;
977 }
978
979 /* Called from main context */
pa_source_output_get_requested_latency(pa_source_output * o)980 pa_usec_t pa_source_output_get_requested_latency(pa_source_output *o) {
981 pa_source_output_assert_ref(o);
982 pa_assert_ctl_context();
983
984 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state) && o->source) {
985 pa_usec_t usec = 0;
986 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
987 return usec;
988 }
989
990 /* If this source output is not realized yet or is being moved, we
991 * have to touch the thread info data directly */
992
993 return o->thread_info.requested_source_latency;
994 }
995
996 /* Called from main context */
pa_source_output_set_volume(pa_source_output * o,const pa_cvolume * volume,bool save,bool absolute)997 void pa_source_output_set_volume(pa_source_output *o, const pa_cvolume *volume, bool save, bool absolute) {
998 pa_cvolume v;
999
1000 pa_source_output_assert_ref(o);
1001 pa_assert_ctl_context();
1002 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
1003 pa_assert(volume);
1004 pa_assert(pa_cvolume_valid(volume));
1005 pa_assert(volume->channels == 1 || pa_cvolume_compatible(volume, &o->sample_spec));
1006 pa_assert(o->volume_writable);
1007
1008 if (!absolute && pa_source_flat_volume_enabled(o->source)) {
1009 v = o->source->reference_volume;
1010 pa_cvolume_remap(&v, &o->source->channel_map, &o->channel_map);
1011
1012 if (pa_cvolume_compatible(volume, &o->sample_spec))
1013 volume = pa_sw_cvolume_multiply(&v, &v, volume);
1014 else
1015 volume = pa_sw_cvolume_multiply_scalar(&v, &v, pa_cvolume_max(volume));
1016 } else {
1017 if (!pa_cvolume_compatible(volume, &o->sample_spec)) {
1018 v = o->volume;
1019 volume = pa_cvolume_scale(&v, pa_cvolume_max(volume));
1020 }
1021 }
1022
1023 if (pa_cvolume_equal(volume, &o->volume)) {
1024 o->save_volume = o->save_volume || save;
1025 return;
1026 }
1027
1028 pa_source_output_set_volume_direct(o, volume);
1029 o->save_volume = save;
1030
1031 if (pa_source_flat_volume_enabled(o->source)) {
1032 /* We are in flat volume mode, so let's update all source input
1033 * volumes and update the flat volume of the source */
1034
1035 pa_source_set_volume(o->source, NULL, true, save);
1036
1037 } else {
1038 /* OK, we are in normal volume mode. The volume only affects
1039 * ourselves */
1040 set_real_ratio(o, volume);
1041
1042 /* Copy the new soft_volume to the thread_info struct */
1043 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_SOFT_VOLUME, NULL, 0, NULL) == 0);
1044 }
1045
1046 /* The volume changed, let's tell people so */
1047 if (o->volume_changed)
1048 o->volume_changed(o);
1049
1050 /* The virtual volume changed, let's tell people so */
1051 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1052 }
1053
1054 /* Called from main context */
set_real_ratio(pa_source_output * o,const pa_cvolume * v)1055 static void set_real_ratio(pa_source_output *o, const pa_cvolume *v) {
1056 pa_source_output_assert_ref(o);
1057 pa_assert_ctl_context();
1058 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
1059 pa_assert(!v || pa_cvolume_compatible(v, &o->sample_spec));
1060
1061 /* This basically calculates:
1062 *
1063 * o->real_ratio := v
1064 * o->soft_volume := o->real_ratio * o->volume_factor */
1065
1066 if (v)
1067 o->real_ratio = *v;
1068 else
1069 pa_cvolume_reset(&o->real_ratio, o->sample_spec.channels);
1070
1071 pa_sw_cvolume_multiply(&o->soft_volume, &o->real_ratio, &o->volume_factor);
1072 /* We don't copy the data to the thread_info data. That's left for someone else to do */
1073 }
1074
1075 /* Called from main or I/O context */
pa_source_output_is_passthrough(pa_source_output * o)1076 bool pa_source_output_is_passthrough(pa_source_output *o) {
1077 pa_source_output_assert_ref(o);
1078
1079 if (PA_UNLIKELY(!pa_format_info_is_pcm(o->format)))
1080 return true;
1081
1082 if (PA_UNLIKELY(o->flags & PA_SOURCE_OUTPUT_PASSTHROUGH))
1083 return true;
1084
1085 return false;
1086 }
1087
1088 /* Called from main context */
pa_source_output_is_volume_readable(pa_source_output * o)1089 bool pa_source_output_is_volume_readable(pa_source_output *o) {
1090 pa_source_output_assert_ref(o);
1091 pa_assert_ctl_context();
1092
1093 return !pa_source_output_is_passthrough(o);
1094 }
1095
1096 /* Called from main context */
pa_source_output_get_volume(pa_source_output * o,pa_cvolume * volume,bool absolute)1097 pa_cvolume *pa_source_output_get_volume(pa_source_output *o, pa_cvolume *volume, bool absolute) {
1098 pa_source_output_assert_ref(o);
1099 pa_assert_ctl_context();
1100 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
1101 pa_assert(pa_source_output_is_volume_readable(o));
1102
1103 if (absolute || !pa_source_flat_volume_enabled(o->source))
1104 *volume = o->volume;
1105 else
1106 *volume = o->reference_ratio;
1107
1108 return volume;
1109 }
1110
1111 /* Called from main context */
pa_source_output_set_mute(pa_source_output * o,bool mute,bool save)1112 void pa_source_output_set_mute(pa_source_output *o, bool mute, bool save) {
1113 bool old_mute;
1114
1115 pa_source_output_assert_ref(o);
1116 pa_assert_ctl_context();
1117 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
1118
1119 old_mute = o->muted;
1120
1121 if (mute == old_mute) {
1122 o->save_muted |= save;
1123 return;
1124 }
1125
1126 o->muted = mute;
1127 pa_log_debug("The mute of source output %u changed from %s to %s.", o->index, pa_yes_no(old_mute), pa_yes_no(mute));
1128
1129 o->save_muted = save;
1130
1131 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_SOFT_MUTE, NULL, 0, NULL) == 0);
1132
1133 /* The mute status changed, let's tell people so */
1134 if (o->mute_changed)
1135 o->mute_changed(o);
1136
1137 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1138 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MUTE_CHANGED], o);
1139 }
1140
pa_source_output_set_property(pa_source_output * o,const char * key,const char * value)1141 void pa_source_output_set_property(pa_source_output *o, const char *key, const char *value) {
1142 char *old_value = NULL;
1143 const char *new_value;
1144
1145 pa_assert(o);
1146 pa_assert(key);
1147
1148 if (pa_proplist_contains(o->proplist, key)) {
1149 old_value = pa_xstrdup(pa_proplist_gets(o->proplist, key));
1150 if (value && old_value && pa_streq(value, old_value))
1151 goto finish;
1152
1153 if (!old_value)
1154 old_value = pa_xstrdup("(data)");
1155 } else {
1156 if (!value)
1157 goto finish;
1158
1159 old_value = pa_xstrdup("(unset)");
1160 }
1161
1162 if (value) {
1163 pa_proplist_sets(o->proplist, key, value);
1164 new_value = value;
1165 } else {
1166 pa_proplist_unset(o->proplist, key);
1167 new_value = "(unset)";
1168 }
1169
1170 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state)) {
1171 pa_log_debug("Source output %u: proplist[%s]: %s -> %s", o->index, key, old_value, new_value);
1172 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED], o);
1173 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT | PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1174 }
1175
1176 finish:
1177 pa_xfree(old_value);
1178 }
1179
pa_source_output_set_property_arbitrary(pa_source_output * o,const char * key,const uint8_t * value,size_t nbytes)1180 void pa_source_output_set_property_arbitrary(pa_source_output *o, const char *key, const uint8_t *value, size_t nbytes) {
1181 const uint8_t *old_value;
1182 size_t old_nbytes;
1183 const char *old_value_str;
1184 const char *new_value_str;
1185
1186 pa_assert(o);
1187 pa_assert(key);
1188
1189 if (pa_proplist_get(o->proplist, key, (const void **) &old_value, &old_nbytes) >= 0) {
1190 if (value && nbytes == old_nbytes && !memcmp(value, old_value, nbytes))
1191 return;
1192
1193 old_value_str = "(data)";
1194
1195 } else {
1196 if (!value)
1197 return;
1198
1199 old_value_str = "(unset)";
1200 }
1201
1202 if (value) {
1203 pa_proplist_set(o->proplist, key, value, nbytes);
1204 new_value_str = "(data)";
1205 } else {
1206 pa_proplist_unset(o->proplist, key);
1207 new_value_str = "(unset)";
1208 }
1209
1210 if (PA_SOURCE_OUTPUT_IS_LINKED(o->state)) {
1211 pa_log_debug("Source output %u: proplist[%s]: %s -> %s", o->index, key, old_value_str, new_value_str);
1212 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED], o);
1213 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT | PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1214 }
1215 }
1216
1217 /* Called from main thread */
pa_source_output_update_proplist(pa_source_output * o,pa_update_mode_t mode,pa_proplist * p)1218 void pa_source_output_update_proplist(pa_source_output *o, pa_update_mode_t mode, pa_proplist *p) {
1219 void *state;
1220 const char *key;
1221 const uint8_t *value;
1222 size_t nbytes;
1223
1224 pa_source_output_assert_ref(o);
1225 pa_assert(p);
1226 pa_assert_ctl_context();
1227
1228 switch (mode) {
1229 case PA_UPDATE_SET:
1230 /* Delete everything that is not in p. */
1231 for (state = NULL; (key = pa_proplist_iterate(o->proplist, &state));) {
1232 if (!pa_proplist_contains(p, key))
1233 pa_source_output_set_property(o, key, NULL);
1234 }
1235
1236 /* Fall through. */
1237 case PA_UPDATE_REPLACE:
1238 for (state = NULL; (key = pa_proplist_iterate(p, &state));) {
1239 pa_proplist_get(p, key, (const void **) &value, &nbytes);
1240 pa_source_output_set_property_arbitrary(o, key, value, nbytes);
1241 }
1242
1243 break;
1244 case PA_UPDATE_MERGE:
1245 for (state = NULL; (key = pa_proplist_iterate(p, &state));) {
1246 if (pa_proplist_contains(o->proplist, key))
1247 continue;
1248
1249 pa_proplist_get(p, key, (const void **) &value, &nbytes);
1250 pa_source_output_set_property_arbitrary(o, key, value, nbytes);
1251 }
1252
1253 break;
1254 }
1255 }
1256
1257 /* Called from main context */
pa_source_output_cork(pa_source_output * o,bool b)1258 void pa_source_output_cork(pa_source_output *o, bool b) {
1259 pa_source_output_assert_ref(o);
1260 pa_assert_ctl_context();
1261 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
1262
1263 source_output_set_state(o, b ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING);
1264 }
1265
1266 /* Called from main context */
pa_source_output_set_rate(pa_source_output * o,uint32_t rate)1267 int pa_source_output_set_rate(pa_source_output *o, uint32_t rate) {
1268 pa_source_output_assert_ref(o);
1269 pa_assert_ctl_context();
1270 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
1271 pa_return_val_if_fail(o->thread_info.resampler, -PA_ERR_BADSTATE);
1272
1273 if (o->sample_spec.rate == rate)
1274 return 0;
1275
1276 o->sample_spec.rate = rate;
1277
1278 pa_asyncmsgq_post(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);
1279
1280 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1281 return 0;
1282 }
1283
1284 /* Called from main context */
pa_source_output_get_resample_method(pa_source_output * o)1285 pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o) {
1286 pa_source_output_assert_ref(o);
1287 pa_assert_ctl_context();
1288
1289 return o->actual_resample_method;
1290 }
1291
1292 /* Called from main context */
pa_source_output_may_move(pa_source_output * o)1293 bool pa_source_output_may_move(pa_source_output *o) {
1294 pa_source_output_assert_ref(o);
1295 pa_assert_ctl_context();
1296 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
1297
1298 if (o->flags & PA_SOURCE_OUTPUT_DONT_MOVE) {
1299 pa_log_info("Refused move to new default source!");
1300 return false;
1301 }
1302
1303 if (o->direct_on_input)
1304 return false;
1305
1306 return true;
1307 }
1308
find_filter_source_output(pa_source_output * target,pa_source * s)1309 static bool find_filter_source_output(pa_source_output *target, pa_source *s) {
1310 unsigned PA_UNUSED i = 0;
1311 while (s && s->output_from_master) {
1312 if (s->output_from_master == target)
1313 return true;
1314 s = s->output_from_master->source;
1315 pa_assert(i++ < 100);
1316 }
1317 return false;
1318 }
1319
is_filter_source_moving(pa_source_output * o)1320 static bool is_filter_source_moving(pa_source_output *o) {
1321 pa_source *source = o->source;
1322
1323 if (!source)
1324 return false;
1325
1326 while (source->output_from_master) {
1327 source = source->output_from_master->source;
1328
1329 if (!source)
1330 return true;
1331 }
1332
1333 return false;
1334 }
1335
1336 /* Called from main context */
pa_source_output_may_move_to(pa_source_output * o,pa_source * dest)1337 bool pa_source_output_may_move_to(pa_source_output *o, pa_source *dest) {
1338 pa_source_output_assert_ref(o);
1339 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
1340 pa_source_assert_ref(dest);
1341
1342 if (dest == o->source)
1343 return true;
1344
1345 if (dest->unlink_requested)
1346 return false;
1347
1348 if (!pa_source_output_may_move(o))
1349 return false;
1350
1351 /* Make sure we're not creating a filter source cycle */
1352 if (find_filter_source_output(o, dest)) {
1353 pa_log_debug("Can't connect output to %s, as that would create a cycle.", dest->name);
1354 return false;
1355 }
1356
1357 /* If this source output is connected to a filter source that itself is
1358 * moving, then don't allow the move. Moving requires sending a message to
1359 * the IO thread of the old source, and if the old source is a filter
1360 * source that is moving, there's no IO thread associated to the old
1361 * source. */
1362 if (is_filter_source_moving(o)) {
1363 pa_log_debug("Can't move output from filter source %s, because the filter source itself is currently moving.",
1364 o->source->name);
1365 return false;
1366 }
1367
1368 if (pa_idxset_size(dest->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
1369 pa_log_warn("Failed to move source output: too many outputs per source.");
1370 return false;
1371 }
1372
1373 if (o->may_move_to)
1374 if (!o->may_move_to(o, dest))
1375 return false;
1376
1377 return true;
1378 }
1379
1380 /* Called from main context */
pa_source_output_start_move(pa_source_output * o)1381 int pa_source_output_start_move(pa_source_output *o) {
1382 pa_source *origin;
1383 int r;
1384
1385 pa_source_output_assert_ref(o);
1386 pa_assert_ctl_context();
1387 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
1388 pa_assert(o->source);
1389
1390 if (!pa_source_output_may_move(o))
1391 return -PA_ERR_NOTSUPPORTED;
1392
1393 if ((r = pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_START], o)) < 0)
1394 return r;
1395
1396 pa_log_debug("Starting to move source output %u from '%s'", (unsigned) o->index, o->source->name);
1397 if (o->source) {
1398 AUDIO_INFO_LOG("[StartMove]: SourceOutput[%{public}u] --xxxx--> source[%{public}u, %{public}s]",
1399 o->index, o->source->index, o->source->name);
1400 }
1401
1402 origin = o->source;
1403
1404 pa_idxset_remove_by_data(o->source->outputs, o, NULL);
1405
1406 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1407 pa_assert_se(origin->n_corked-- >= 1);
1408
1409 if (pa_source_output_is_passthrough(o))
1410 pa_source_leave_passthrough(o->source);
1411
1412 if (pa_source_flat_volume_enabled(o->source))
1413 /* We might need to update the source's volume if we are in flat
1414 * volume mode. */
1415 pa_source_set_volume(o->source, NULL, false, false);
1416
1417 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL) == 0);
1418
1419 pa_source_update_status(o->source);
1420
1421 pa_cvolume_remap(&o->volume_factor_source, &o->source->channel_map, &o->channel_map);
1422
1423 o->source = NULL;
1424 o->source_requested_by_application = false;
1425
1426 pa_source_output_unref(o);
1427
1428 return 0;
1429 }
1430
1431 /* Called from main context. If it has an origin source that uses volume sharing,
1432 * then also the origin source and all streams connected to it need to update
1433 * their volume - this function does all that by using recursion. */
update_volume_due_to_moving(pa_source_output * o,pa_source * dest)1434 static void update_volume_due_to_moving(pa_source_output *o, pa_source *dest) {
1435 pa_cvolume new_volume;
1436
1437 pa_assert(o);
1438 pa_assert(dest);
1439 pa_assert(o->source); /* The destination source should already be set. */
1440
1441 if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
1442 pa_source *root_source;
1443 pa_source_output *destination_source_output;
1444 uint32_t idx;
1445
1446 root_source = pa_source_get_master(o->source);
1447
1448 if (PA_UNLIKELY(!root_source))
1449 return;
1450
1451 if (pa_source_flat_volume_enabled(o->source)) {
1452 /* Ok, so the origin source uses volume sharing, and flat volume is
1453 * enabled. The volume will have to be updated as follows:
1454 *
1455 * o->volume := o->source->real_volume
1456 * (handled later by pa_source_set_volume)
1457 * o->reference_ratio := o->volume / o->source->reference_volume
1458 * (handled later by pa_source_set_volume)
1459 * o->real_ratio stays unchanged
1460 * (streams whose origin source uses volume sharing should
1461 * always have real_ratio of 0 dB)
1462 * o->soft_volume stays unchanged
1463 * (streams whose origin source uses volume sharing should
1464 * always have volume_factor as soft_volume, so no change
1465 * should be needed) */
1466
1467 pa_assert(pa_cvolume_is_norm(&o->real_ratio));
1468 pa_assert(pa_cvolume_equal(&o->soft_volume, &o->volume_factor));
1469
1470 /* Notifications will be sent by pa_source_set_volume(). */
1471
1472 } else {
1473 /* Ok, so the origin source uses volume sharing, and flat volume is
1474 * disabled. The volume will have to be updated as follows:
1475 *
1476 * o->volume := 0 dB
1477 * o->reference_ratio := 0 dB
1478 * o->real_ratio stays unchanged
1479 * (streams whose origin source uses volume sharing should
1480 * always have real_ratio of 0 dB)
1481 * o->soft_volume stays unchanged
1482 * (streams whose origin source uses volume sharing should
1483 * always have volume_factor as soft_volume, so no change
1484 * should be needed) */
1485
1486 pa_cvolume_reset(&new_volume, o->volume.channels);
1487 pa_source_output_set_volume_direct(o, &new_volume);
1488 pa_source_output_set_reference_ratio(o, &new_volume);
1489 pa_assert(pa_cvolume_is_norm(&o->real_ratio));
1490 pa_assert(pa_cvolume_equal(&o->soft_volume, &o->volume_factor));
1491 }
1492
1493 /* Additionally, the origin source volume needs updating:
1494 *
1495 * o->destination_source->reference_volume := root_source->reference_volume
1496 * o->destination_source->real_volume := root_source->real_volume
1497 * o->destination_source->soft_volume stays unchanged
1498 * (sources that use volume sharing should always have
1499 * soft_volume of 0 dB) */
1500
1501 new_volume = root_source->reference_volume;
1502 pa_cvolume_remap(&new_volume, &root_source->channel_map, &o->destination_source->channel_map);
1503 pa_source_set_reference_volume_direct(o->destination_source, &new_volume);
1504
1505 o->destination_source->real_volume = root_source->real_volume;
1506 pa_cvolume_remap(&o->destination_source->real_volume, &root_source->channel_map, &o->destination_source->channel_map);
1507
1508 pa_assert(pa_cvolume_is_norm(&o->destination_source->soft_volume));
1509
1510 /* If you wonder whether o->destination_source->set_volume() should be
1511 * called somewhere, that's not the case, because sources that use
1512 * volume sharing shouldn't have any internal volume that set_volume()
1513 * would update. If you wonder whether the thread_info variables should
1514 * be synced, yes, they should, and it's done by the
1515 * PA_SOURCE_MESSAGE_FINISH_MOVE message handler. */
1516
1517 /* Recursively update origin source outputs. */
1518 PA_IDXSET_FOREACH(destination_source_output, o->destination_source->outputs, idx)
1519 update_volume_due_to_moving(destination_source_output, dest);
1520
1521 } else {
1522 if (pa_source_flat_volume_enabled(o->source)) {
1523 /* Ok, so this is a regular stream, and flat volume is enabled. The
1524 * volume will have to be updated as follows:
1525 *
1526 * o->volume := o->reference_ratio * o->source->reference_volume
1527 * o->reference_ratio stays unchanged
1528 * o->real_ratio := o->volume / o->source->real_volume
1529 * (handled later by pa_source_set_volume)
1530 * o->soft_volume := o->real_ratio * o->volume_factor
1531 * (handled later by pa_source_set_volume) */
1532
1533 new_volume = o->source->reference_volume;
1534 pa_cvolume_remap(&new_volume, &o->source->channel_map, &o->channel_map);
1535 pa_sw_cvolume_multiply(&new_volume, &new_volume, &o->reference_ratio);
1536 pa_source_output_set_volume_direct(o, &new_volume);
1537
1538 } else {
1539 /* Ok, so this is a regular stream, and flat volume is disabled.
1540 * The volume will have to be updated as follows:
1541 *
1542 * o->volume := o->reference_ratio
1543 * o->reference_ratio stays unchanged
1544 * o->real_ratio := o->reference_ratio
1545 * o->soft_volume := o->real_ratio * o->volume_factor */
1546
1547 pa_source_output_set_volume_direct(o, &o->reference_ratio);
1548 o->real_ratio = o->reference_ratio;
1549 pa_sw_cvolume_multiply(&o->soft_volume, &o->real_ratio, &o->volume_factor);
1550
1551 /* If this is a virtual source stream, we have to apply the source volume
1552 * to the source output. */
1553 if (o->destination_source) {
1554 pa_cvolume vol;
1555
1556 vol = o->destination_source->real_volume;
1557 pa_cvolume_remap(&vol, &o->destination_source->channel_map, &o->channel_map);
1558 pa_source_output_set_volume(o, &vol, o->destination_source->save_volume, true);
1559 }
1560 }
1561 }
1562
1563 /* If o->source == dest, then recursion has finished, and we can finally call
1564 * pa_source_set_volume(), which will do the rest of the updates. */
1565 if ((o->source == dest) && pa_source_flat_volume_enabled(o->source))
1566 pa_source_set_volume(o->source, NULL, false, o->save_volume);
1567 }
1568
1569 /* Called from the main thread. */
set_preferred_source(pa_source_output * o,const char * source_name)1570 static void set_preferred_source(pa_source_output *o, const char *source_name) {
1571 pa_assert(o);
1572
1573 if (pa_safe_streq(o->preferred_source, source_name))
1574 return;
1575
1576 pa_log_debug("Source output %u: preferred_source: %s -> %s",
1577 o->index, o->preferred_source ? o->preferred_source : "(unset)", source_name ? source_name : "(unset)");
1578 pa_xfree(o->preferred_source);
1579 o->preferred_source = pa_xstrdup(source_name);
1580
1581 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT | PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1582 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PREFERRED_SOURCE_CHANGED], o);
1583 }
1584
1585 /* Called from main context */
pa_source_output_finish_move(pa_source_output * o,pa_source * dest,bool save)1586 int pa_source_output_finish_move(pa_source_output *o, pa_source *dest, bool save) {
1587 pa_source_output_assert_ref(o);
1588 pa_assert_ctl_context();
1589 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
1590 pa_assert(!o->source);
1591 pa_source_assert_ref(dest);
1592
1593 if (!pa_source_output_may_move_to(o, dest))
1594 return -PA_ERR_NOTSUPPORTED;
1595
1596 if (pa_source_output_is_passthrough(o) && !pa_source_check_format(dest, o->format)) {
1597 pa_proplist *p = pa_proplist_new();
1598 pa_log_debug("New source doesn't support stream format, sending format-changed and killing");
1599 /* Tell the client what device we want to be on if it is going to
1600 * reconnect */
1601 pa_proplist_sets(p, "device", dest->name);
1602 pa_source_output_send_event(o, PA_STREAM_EVENT_FORMAT_LOST, p);
1603 pa_proplist_free(p);
1604 return -PA_ERR_NOTSUPPORTED;
1605 }
1606
1607 if (!(o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) &&
1608 !pa_sample_spec_equal(&o->sample_spec, &dest->sample_spec)) {
1609 /* try to change dest source format and rate if possible without glitches.
1610 module-suspend-on-idle resumes destination source with
1611 SOURCE_OUTPUT_MOVE_FINISH hook */
1612
1613 pa_log_info("Trying to change sample spec");
1614 pa_source_reconfigure(dest, &o->sample_spec, pa_source_output_is_passthrough(o));
1615 }
1616
1617 if (o->moving)
1618 o->moving(o, dest);
1619
1620 o->source = dest;
1621 if (dest) {
1622 AUDIO_INFO_LOG("[FinishMove]: SourceOutput[%{public}u] ----------> source[%{public}u, %{public}s]",
1623 o->index, dest->index, dest->name);
1624 }
1625
1626 /* save == true, means user is calling the move_to() and want to
1627 save the preferred_source */
1628 if (save) {
1629 if (dest == dest->core->default_source)
1630 set_preferred_source(o, NULL);
1631 else
1632 set_preferred_source(o, dest->name);
1633 }
1634
1635 pa_idxset_put(o->source->outputs, pa_source_output_ref(o), NULL);
1636
1637 pa_cvolume_remap(&o->volume_factor_source, &o->channel_map, &o->source->channel_map);
1638
1639 if (o->state == PA_SOURCE_OUTPUT_CORKED)
1640 o->source->n_corked++;
1641
1642 pa_source_output_update_resampler(o);
1643
1644 pa_source_update_status(dest);
1645
1646 update_volume_due_to_moving(o, dest);
1647
1648 if (pa_source_output_is_passthrough(o))
1649 pa_source_enter_passthrough(o->source);
1650
1651 pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, o, 0, NULL) == 0);
1652
1653 pa_log_debug("Successfully moved source output %i to %s.", o->index, dest->name);
1654
1655 /* Notify everyone */
1656 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FINISH], o);
1657 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1658
1659 return 0;
1660 }
1661
1662 /* Called from main context */
pa_source_output_fail_move(pa_source_output * o)1663 void pa_source_output_fail_move(pa_source_output *o) {
1664
1665 pa_source_output_assert_ref(o);
1666 pa_assert_ctl_context();
1667 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
1668 pa_assert(!o->source);
1669
1670 /* Check if someone wants this source output? */
1671 if (pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FAIL], o) == PA_HOOK_STOP)
1672 return;
1673
1674 /* Can we move the source output to the default source? */
1675 if (o->core->rescue_streams && pa_source_output_may_move_to(o, o->core->default_source)) {
1676 if (pa_source_output_finish_move(o, o->core->default_source, false) >= 0)
1677 return;
1678 }
1679
1680 AUDIO_WARNING_LOG("[FailMove]: SourceOutput[%{public}u] moving FAILED.", o->index);
1681 if (o->moving)
1682 o->moving(o, NULL);
1683
1684 pa_source_output_kill(o);
1685 }
1686
1687 /* Called from main context */
pa_source_output_move_to(pa_source_output * o,pa_source * dest,bool save)1688 int pa_source_output_move_to(pa_source_output *o, pa_source *dest, bool save) {
1689 int r;
1690
1691 pa_source_output_assert_ref(o);
1692 pa_assert_ctl_context();
1693 pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
1694 pa_assert(o->source);
1695 pa_source_assert_ref(dest);
1696
1697 if (dest == o->source)
1698 return 0;
1699
1700 if (!pa_source_output_may_move_to(o, dest))
1701 return -PA_ERR_NOTSUPPORTED;
1702
1703 pa_source_output_ref(o);
1704
1705 if ((r = pa_source_output_start_move(o)) < 0) {
1706 pa_source_output_unref(o);
1707 return r;
1708 }
1709
1710 if ((r = pa_source_output_finish_move(o, dest, save)) < 0) {
1711 pa_source_output_fail_move(o);
1712 pa_source_output_unref(o);
1713 return r;
1714 }
1715
1716 pa_source_output_unref(o);
1717
1718 return 0;
1719 }
1720
1721 /* Called from IO thread context except when cork() is called without a valid source. */
pa_source_output_set_state_within_thread(pa_source_output * o,pa_source_output_state_t state)1722 void pa_source_output_set_state_within_thread(pa_source_output *o, pa_source_output_state_t state) {
1723 pa_source_output_assert_ref(o);
1724
1725 if (state == o->thread_info.state)
1726 return;
1727
1728 if (o->state_change)
1729 o->state_change(o, state);
1730
1731 o->thread_info.state = state;
1732 }
1733
1734 /* Called from IO thread context, except when it is not */
pa_source_output_process_msg(pa_msgobject * mo,int code,void * userdata,int64_t offset,pa_memchunk * chunk)1735 int pa_source_output_process_msg(pa_msgobject *mo, int code, void *userdata, int64_t offset, pa_memchunk* chunk) {
1736 pa_source_output *o = PA_SOURCE_OUTPUT(mo);
1737 pa_source_output_assert_ref(o);
1738
1739 switch (code) {
1740
1741 case PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY: {
1742 pa_usec_t *r = userdata;
1743
1744 r[0] += pa_bytes_to_usec(pa_memblockq_get_length(o->thread_info.delay_memblockq), &o->source->sample_spec);
1745 r[0] += pa_resampler_get_delay_usec(o->thread_info.resampler);
1746 r[1] += pa_source_get_latency_within_thread(o->source, false);
1747
1748 return 0;
1749 }
1750
1751 case PA_SOURCE_OUTPUT_MESSAGE_SET_RATE:
1752
1753 o->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
1754 pa_resampler_set_output_rate(o->thread_info.resampler, PA_PTR_TO_UINT(userdata));
1755 return 0;
1756
1757 case PA_SOURCE_OUTPUT_MESSAGE_SET_STATE:
1758
1759 pa_source_output_set_state_within_thread(o, PA_PTR_TO_UINT(userdata));
1760
1761 return 0;
1762
1763 case PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY: {
1764 pa_usec_t *usec = userdata;
1765
1766 *usec = pa_source_output_set_requested_latency_within_thread(o, *usec);
1767
1768 return 0;
1769 }
1770
1771 case PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY: {
1772 pa_usec_t *r = userdata;
1773
1774 *r = o->thread_info.requested_source_latency;
1775 return 0;
1776 }
1777
1778 case PA_SOURCE_OUTPUT_MESSAGE_SET_SOFT_VOLUME:
1779 if (!pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume)) {
1780 o->thread_info.soft_volume = o->soft_volume;
1781 }
1782 return 0;
1783
1784 case PA_SOURCE_OUTPUT_MESSAGE_SET_SOFT_MUTE:
1785 if (o->thread_info.muted != o->muted) {
1786 o->thread_info.muted = o->muted;
1787 }
1788 return 0;
1789 }
1790
1791 return -PA_ERR_NOTIMPLEMENTED;
1792 }
1793
1794 /* Called from main context */
pa_source_output_send_event(pa_source_output * o,const char * event,pa_proplist * data)1795 void pa_source_output_send_event(pa_source_output *o, const char *event, pa_proplist *data) {
1796 pa_proplist *pl = NULL;
1797 pa_source_output_send_event_hook_data hook_data;
1798
1799 pa_source_output_assert_ref(o);
1800 pa_assert_ctl_context();
1801 pa_assert(event);
1802
1803 if (!o->send_event)
1804 return;
1805
1806 if (!data)
1807 data = pl = pa_proplist_new();
1808
1809 hook_data.source_output = o;
1810 hook_data.data = data;
1811 hook_data.event = event;
1812
1813 if (pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_SEND_EVENT], &hook_data) < 0)
1814 goto finish;
1815
1816 o->send_event(o, event, data);
1817
1818 finish:
1819 if (pl)
1820 pa_proplist_free(pl);
1821 }
1822
1823 /* Called from main context */
1824 /* Updates the source output's resampler with whatever the current source
1825 * requires -- useful when the underlying source's sample spec might have changed */
pa_source_output_update_resampler(pa_source_output * o)1826 int pa_source_output_update_resampler(pa_source_output *o) {
1827 pa_resampler *new_resampler;
1828 char *memblockq_name;
1829 size_t resampler_history;
1830
1831 pa_source_output_assert_ref(o);
1832 pa_assert_ctl_context();
1833
1834 if (o->thread_info.resampler &&
1835 pa_sample_spec_equal(pa_resampler_input_sample_spec(o->thread_info.resampler), &o->source->sample_spec) &&
1836 pa_channel_map_equal(pa_resampler_input_channel_map(o->thread_info.resampler), &o->source->channel_map))
1837
1838 new_resampler = o->thread_info.resampler;
1839
1840 else if (!pa_source_output_is_passthrough(o) &&
1841 ((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
1842 !pa_sample_spec_equal(&o->sample_spec, &o->source->sample_spec) ||
1843 !pa_channel_map_equal(&o->channel_map, &o->source->channel_map))) {
1844
1845 new_resampler = pa_resampler_new(o->core->mempool,
1846 &o->source->sample_spec, &o->source->channel_map,
1847 &o->sample_spec, &o->channel_map,
1848 o->core->lfe_crossover_freq,
1849 o->requested_resample_method,
1850 ((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
1851 ((o->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
1852 (o->core->disable_remixing || (o->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0) |
1853 (o->core->remixing_use_all_sink_channels ? 0 : PA_RESAMPLER_NO_FILL_SINK) |
1854 (o->core->remixing_produce_lfe ? PA_RESAMPLER_PRODUCE_LFE : 0) |
1855 (o->core->remixing_consume_lfe ? PA_RESAMPLER_CONSUME_LFE : 0));
1856
1857 if (!new_resampler) {
1858 pa_log_warn("Unsupported resampling operation.");
1859 return -PA_ERR_NOTSUPPORTED;
1860 }
1861 } else
1862 new_resampler = NULL;
1863
1864 if (new_resampler == o->thread_info.resampler)
1865 return 0;
1866
1867 if (o->thread_info.resampler)
1868 pa_resampler_free(o->thread_info.resampler);
1869
1870 o->thread_info.resampler = new_resampler;
1871
1872 pa_memblockq_free(o->thread_info.delay_memblockq);
1873
1874 memblockq_name = pa_sprintf_malloc("source output delay_memblockq [%u]", o->index);
1875 o->thread_info.delay_memblockq = pa_memblockq_new(
1876 memblockq_name,
1877 0,
1878 MEMBLOCKQ_MAXLENGTH,
1879 0,
1880 &o->source->sample_spec,
1881 0,
1882 1,
1883 0,
1884 &o->source->silence);
1885 pa_xfree(memblockq_name);
1886
1887 resampler_history = (uint64_t) PA_RESAMPLER_MAX_DELAY_USEC * o->source->sample_spec.rate / PA_USEC_PER_SEC;
1888 resampler_history *= pa_frame_size(&o->source->sample_spec);
1889
1890 pa_memblockq_set_maxrewind(o->thread_info.delay_memblockq, resampler_history + pa_source_get_max_rewind(o->source));
1891
1892 o->actual_resample_method = new_resampler ? pa_resampler_get_method(new_resampler) : PA_RESAMPLER_INVALID;
1893
1894 pa_log_debug("Updated resampler for source output %d", o->index);
1895
1896 return 0;
1897 }
1898
1899 /* Called from the IO thread. */
pa_source_output_attach(pa_source_output * o)1900 void pa_source_output_attach(pa_source_output *o) {
1901 pa_assert(o);
1902 pa_assert(!o->thread_info.attached);
1903
1904 o->thread_info.attached = true;
1905
1906 if (o->attach)
1907 o->attach(o);
1908 }
1909
1910 /* Called from the IO thread. */
pa_source_output_detach(pa_source_output * o)1911 void pa_source_output_detach(pa_source_output *o) {
1912 pa_assert(o);
1913
1914 if (!o->thread_info.attached)
1915 return;
1916
1917 o->thread_info.attached = false;
1918
1919 if (o->detach)
1920 o->detach(o);
1921 }
1922
1923 /* Called from the main thread. */
pa_source_output_set_volume_direct(pa_source_output * o,const pa_cvolume * volume)1924 void pa_source_output_set_volume_direct(pa_source_output *o, const pa_cvolume *volume) {
1925 pa_cvolume old_volume;
1926 char old_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
1927 char new_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
1928
1929 pa_assert(o);
1930 pa_assert(volume);
1931
1932 old_volume = o->volume;
1933
1934 if (pa_cvolume_equal(volume, &old_volume))
1935 return;
1936
1937 o->volume = *volume;
1938 pa_log_debug("The volume of source output %u changed from %s to %s.", o->index,
1939 pa_cvolume_snprint_verbose(old_volume_str, sizeof(old_volume_str), &old_volume, &o->channel_map, true),
1940 pa_cvolume_snprint_verbose(new_volume_str, sizeof(new_volume_str), volume, &o->channel_map, true));
1941
1942 if (o->volume_changed)
1943 o->volume_changed(o);
1944
1945 pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
1946 pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_VOLUME_CHANGED], o);
1947 }
1948
1949 /* Called from the main thread. */
pa_source_output_set_reference_ratio(pa_source_output * o,const pa_cvolume * ratio)1950 void pa_source_output_set_reference_ratio(pa_source_output *o, const pa_cvolume *ratio) {
1951 pa_cvolume old_ratio;
1952 char old_ratio_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
1953 char new_ratio_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
1954
1955 pa_assert(o);
1956 pa_assert(ratio);
1957
1958 old_ratio = o->reference_ratio;
1959
1960 if (pa_cvolume_equal(ratio, &old_ratio))
1961 return;
1962
1963 o->reference_ratio = *ratio;
1964
1965 if (!PA_SOURCE_OUTPUT_IS_LINKED(o->state))
1966 return;
1967
1968 pa_log_debug("Source output %u reference ratio changed from %s to %s.", o->index,
1969 pa_cvolume_snprint_verbose(old_ratio_str, sizeof(old_ratio_str), &old_ratio, &o->channel_map, true),
1970 pa_cvolume_snprint_verbose(new_ratio_str, sizeof(new_ratio_str), ratio, &o->channel_map, true));
1971 }
1972
1973 /* Called from the main thread.
1974 *
1975 * This is called when e.g. module-stream-restore wants to change the preferred
1976 * source. As a side effect the stream is moved to the new preferred source.
1977 * Note that things can work also in the other direction: if the user moves
1978 * a stream, as a side effect the preferred source is changed. This could cause
1979 * an infinite loop, but it's avoided by these two measures:
1980 * - When pa_source_output_set_preferred_source() is called, it calls
1981 * pa_source_output_move_to() with save=false, which avoids the recursive
1982 * pa_source_output_set_preferred_source() call.
1983 * - When the primary operation is to move a stream,
1984 * pa_source_output_finish_move() calls set_preferred_source() instead of
1985 * pa_source_output_set_preferred_source(). set_preferred_source() doesn't
1986 * move the stream as a side effect.
1987 */
pa_source_output_set_preferred_source(pa_source_output * o,pa_source * s)1988 void pa_source_output_set_preferred_source(pa_source_output *o, pa_source *s) {
1989 pa_assert(o);
1990
1991 if (s) {
1992 set_preferred_source(o, s->name);
1993 pa_source_output_move_to(o, s, false);
1994 } else {
1995 set_preferred_source(o, NULL);
1996 pa_source_output_move_to(o, o->core->default_source, false);
1997 }
1998 }
1999