1 #ifndef foopulsesinkhfoo
2 #define foopulsesinkhfoo
5 This file is part of PulseAudio.
7 Copyright 2004-2006 Lennart Poettering
8 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
10 PulseAudio is free software; you can redistribute it and/or modify
11 it under the terms of the GNU Lesser General Public License as published
12 by the Free Software Foundation; either version 2.1 of the License,
13 or (at your option) any later version.
15 PulseAudio is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
26 #include <pulsecore/typedefs.h>
27 #include <pulse/def.h>
28 #include <pulse/format.h>
29 #include <pulse/sample.h>
30 #include <pulse/channelmap.h>
31 #include <pulse/volume.h>
33 #include <pulsecore/core.h>
34 #include <pulsecore/idxset.h>
35 #include <pulsecore/memchunk.h>
36 #include <pulsecore/source.h>
37 #include <pulsecore/module.h>
38 #include <pulsecore/asyncmsgq.h>
39 #include <pulsecore/msgobject.h>
40 #include <pulsecore/rtpoll.h>
41 #include <pulsecore/device-port.h>
42 #include <pulsecore/card.h>
43 #include <pulsecore/queue.h>
44 #include <pulsecore/thread-mq.h>
45 #include <pulsecore/sink-input.h>
47 #define PA_MAX_INPUTS_PER_SINK 256
49 /* Returns true if sink is linked: registered and accessible from client side. */
50 static inline bool PA_SINK_IS_LINKED(pa_sink_state_t x) {
51 return x == PA_SINK_RUNNING || x == PA_SINK_IDLE || x == PA_SINK_SUSPENDED;
54 /* A generic definition for void callback functions */
55 typedef void(*pa_sink_cb_t)(pa_sink *s);
57 typedef int (*pa_sink_get_mute_cb_t)(pa_sink *s, bool *mute);
65 pa_sink_state_t state;
67 /* Set in the beginning of pa_sink_unlink() before setting the sink state
68 * to UNLINKED. The purpose is to prevent moving streams to a sink that is
69 * about to be removed. */
70 bool unlink_requested;
72 pa_sink_flags_t flags;
73 pa_suspend_cause_t suspend_cause;
76 char *driver; /* may be NULL */
77 pa_proplist *proplist;
79 pa_module *module; /* may be NULL */
80 pa_card *card; /* may be NULL */
82 pa_sample_spec sample_spec;
83 pa_channel_map channel_map;
84 uint32_t default_sample_rate;
85 uint32_t alternate_sample_rate;
86 bool avoid_resampling:1;
88 uint32_t *supported_sample_rates;
89 uint32_t selected_sample_rate;
90 pa_sample_format_t *supported_sample_formats;
91 pa_sample_format_t selected_sample_format;
96 pa_source *monitor_source;
97 pa_sink_input *input_to_master; /* non-NULL only for filter sinks */
99 pa_volume_t base_volume; /* shall be constant */
100 unsigned n_volume_steps; /* shall be constant */
102 /* Also see http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/Developer/Volumes/ */
103 pa_cvolume reference_volume; /* The volume exported and taken as reference base for relative sink input volumes */
104 pa_cvolume real_volume; /* The volume that the hardware is configured to */
105 pa_cvolume soft_volume; /* The internal software volume we apply to all PCM data while it passes through */
109 bool refresh_volume:1;
110 bool refresh_muted:1;
114 bool port_changing:1;
116 /* Saved volume state while we're in passthrough mode */
117 pa_cvolume saved_volume;
118 bool saved_save_volume:1;
120 pa_asyncmsgq *asyncmsgq;
125 pa_device_port *active_port;
127 /* The latency offset is inherited from the currently active port */
128 int64_t port_latency_offset;
132 bool set_mute_in_progress;
134 /* Callbacks for doing things when the sink state and/or suspend cause is
135 * changed. It's fine to set either or both of the callbacks to NULL if the
136 * implementation doesn't have anything to do on state or suspend cause
139 * set_state_in_main_thread() is called first. The callback is allowed to
140 * report failure if and only if the sink changes its state from
141 * SUSPENDED to IDLE or RUNNING. (FIXME: It would make sense to allow
142 * failure also when changing state from INIT to IDLE or RUNNING, but
143 * currently that will crash pa_sink_put().) If
144 * set_state_in_main_thread() fails, set_state_in_io_thread() won't be
147 * If set_state_in_main_thread() is successful (or not set), then
148 * set_state_in_io_thread() is called. Again, failure is allowed if and
149 * only if the sink changes state from SUSPENDED to IDLE or RUNNING. If
150 * set_state_in_io_thread() fails, then set_state_in_main_thread() is
151 * called again, this time with the state parameter set to SUSPENDED and
152 * the suspend_cause parameter set to 0.
154 * pa_sink.state, pa_sink.thread_info.state and pa_sink.suspend_cause
155 * are updated only after all the callback calls. In case of failure, the
156 * state is set to SUSPENDED and the suspend cause is set to 0. */
157 int (*set_state_in_main_thread)(pa_sink *s, pa_sink_state_t state, pa_suspend_cause_t suspend_cause); /* may be NULL */
158 int (*set_state_in_io_thread)(pa_sink *s, pa_sink_state_t state, pa_suspend_cause_t suspend_cause); /* may be NULL */
160 /* Sink drivers that support hardware volume may set this
161 * callback. This is called when the current volume needs to be
162 * re-read from the hardware.
164 * There are two ways for drivers to implement hardware volume
165 * query: either set this callback or handle
166 * PA_SINK_MESSAGE_GET_VOLUME. The callback implementation or the
167 * message handler must update s->real_volume and s->soft_volume
168 * (using pa_sink_set_soft_volume()) to match the current hardware
171 * If PA_SINK_DEFERRED_VOLUME is not set, then this is called from the
172 * main thread before sending PA_SINK_MESSAGE_GET_VOLUME, so in
173 * this case the driver can choose whether to read the volume from
174 * the hardware in the main thread or in the IO thread.
176 * If PA_SINK_DEFERRED_VOLUME is set, then this is called from the IO
177 * thread within the default handler for
178 * PA_SINK_MESSAGE_GET_VOLUME (the main thread is waiting while
179 * the message is being processed), so there's no choice of where
180 * to do the volume reading - it has to be done in the IO thread
183 * You must use the function pa_sink_set_get_volume_callback() to
184 * set this callback. */
185 pa_sink_cb_t get_volume; /* may be NULL */
187 /* Sink drivers that support hardware volume must set this
188 * callback. This is called when the hardware volume needs to be
191 * If PA_SINK_DEFERRED_VOLUME is not set, then this is called from the
192 * main thread. The callback implementation must set the hardware
193 * volume according to s->real_volume. If the driver can't set the
194 * hardware volume to the exact requested value, it has to update
195 * s->real_volume and/or s->soft_volume so that they together
196 * match the actual hardware volume that was set.
198 * If PA_SINK_DEFERRED_VOLUME is set, then this is called from the IO
199 * thread. The callback implementation must not actually set the
200 * hardware volume yet, but it must check how close to the
201 * requested volume the hardware volume can be set, and update
202 * s->real_volume and/or s->soft_volume so that they together
203 * match the actual hardware volume that will be set later in the
204 * write_volume callback.
206 * You must use the function pa_sink_set_set_volume_callback() to
207 * set this callback. */
208 pa_sink_cb_t set_volume; /* may be NULL */
210 /* Sink drivers that set PA_SINK_DEFERRED_VOLUME must provide this
211 * callback. This callback is not used with sinks that do not set
212 * PA_SINK_DEFERRED_VOLUME. This is called from the IO thread when a
213 * pending hardware volume change has to be written to the
214 * hardware. The requested volume is passed to the callback
215 * implementation in s->thread_info.current_hw_volume.
217 * The call is done inside pa_sink_volume_change_apply(), which is
218 * not called automatically - it is the driver's responsibility to
219 * schedule that function to be called at the right times in the
222 * You must use the function pa_sink_set_write_volume_callback() to
223 * set this callback. */
224 pa_sink_cb_t write_volume; /* may be NULL */
226 /* If the sink mute can change "spontaneously" (i.e. initiated by the sink
227 * implementation, not by someone else calling pa_sink_set_mute()), then
228 * the sink implementation can notify about changed mute either by calling
229 * pa_sink_mute_changed() or by calling pa_sink_get_mute() with
230 * force_refresh=true. If the implementation chooses the latter approach,
231 * it should implement the get_mute callback. Otherwise get_mute can be
234 * This is called when pa_sink_get_mute() is called with
235 * force_refresh=true. This is called from the IO thread if the
236 * PA_SINK_DEFERRED_VOLUME flag is set, otherwise this is called from the
237 * main thread. On success, the implementation is expected to return 0 and
238 * set the mute parameter that is passed as a reference. On failure, the
239 * implementation is expected to return -1.
241 * You must use the function pa_sink_set_get_mute_callback() to
242 * set this callback. */
243 pa_sink_get_mute_cb_t get_mute;
245 /* Called when the mute setting shall be changed. A PA_SINK_MESSAGE_SET_MUTE
246 * message will also be sent. Called from IO thread if PA_SINK_DEFERRED_VOLUME
247 * flag is set otherwise from main loop context.
249 * You must use the function pa_sink_set_set_mute_callback() to
250 * set this callback. */
251 pa_sink_cb_t set_mute; /* may be NULL */
253 /* Called when a rewind request is issued. Called from IO thread
255 pa_sink_cb_t request_rewind; /* may be NULL */
257 /* Called when a the requested latency is changed. Called from IO
259 pa_sink_cb_t update_requested_latency; /* may be NULL */
261 /* Called whenever the port shall be changed. Called from the main
263 int (*set_port)(pa_sink *s, pa_device_port *port); /* may be NULL */
265 /* Called to get the list of formats supported by the sink, sorted
266 * in descending order of preference. */
267 pa_idxset* (*get_formats)(pa_sink *s); /* may be NULL */
269 /* Called to set the list of formats supported by the sink. Can be
270 * NULL if the sink does not support this. Returns true on success,
271 * false otherwise (for example when an unsupportable format is
272 * set). Makes a copy of the formats passed in. */
273 bool (*set_formats)(pa_sink *s, pa_idxset *formats); /* may be NULL */
275 /* Called whenever device parameters need to be changed. Called from
277 void (*reconfigure)(pa_sink *s, pa_sample_spec *spec, bool passthrough);
279 /* Contains copies of the above data so that the real-time worker
280 * thread can work without access locking */
282 pa_sink_state_t state;
287 pa_cvolume soft_volume;
290 /* The requested latency is used for dynamic latency
291 * sinks. For fixed latency sinks it is always identical to
292 * the fixed_latency. See below. */
293 bool requested_latency_valid:1;
294 pa_usec_t requested_latency;
296 /* The number of bytes streams need to keep around as history to
297 * be able to satisfy every DMA buffer rewrite */
300 /* The number of bytes streams need to keep around to satisfy
301 * every DMA write request */
304 /* Maximum of what clients requested to rewind in this cycle */
305 size_t rewind_nbytes;
306 bool rewind_requested;
308 /* Both dynamic and fixed latencies will be clamped to this
310 pa_usec_t min_latency; /* we won't go below this latency */
311 pa_usec_t max_latency; /* An upper limit for the latencies */
313 /* 'Fixed' simply means that the latency is exclusively
314 * decided on by the sink, and the clients have no influence
316 pa_usec_t fixed_latency; /* for sinks with PA_SINK_DYNAMIC_LATENCY this is 0 */
318 /* This latency offset is a direct copy from s->port_latency_offset */
319 int64_t port_latency_offset;
321 /* Delayed volume change events are queued here. The events
322 * are stored in expiration order. The one expiring next is in
323 * the head of the list. */
324 PA_LLIST_HEAD(pa_sink_volume_change, volume_changes);
325 pa_sink_volume_change *volume_changes_tail;
326 /* This value is updated in pa_sink_volume_change_apply() and
327 * used only by sinks with PA_SINK_DEFERRED_VOLUME. */
328 pa_cvolume current_hw_volume;
330 /* The amount of usec volume up events are delayed and volume
331 * down events are made earlier. */
332 uint32_t volume_change_safety_margin;
333 /* Usec delay added to all volume change events, may be negative. */
334 int32_t volume_change_extra_delay;
341 bool use_internal_codec;
346 PA_DECLARE_PUBLIC_CLASS(pa_sink);
347 #define PA_SINK(s) (pa_sink_cast(s))
349 typedef enum pa_sink_message {
350 PA_SINK_MESSAGE_ADD_INPUT,
351 PA_SINK_MESSAGE_REMOVE_INPUT,
352 PA_SINK_MESSAGE_GET_VOLUME,
353 PA_SINK_MESSAGE_SET_SHARED_VOLUME,
354 PA_SINK_MESSAGE_SET_VOLUME_SYNCED,
355 PA_SINK_MESSAGE_SET_VOLUME,
356 PA_SINK_MESSAGE_SYNC_VOLUMES,
357 PA_SINK_MESSAGE_GET_MUTE,
358 PA_SINK_MESSAGE_SET_MUTE,
359 PA_SINK_MESSAGE_GET_LATENCY,
360 PA_SINK_MESSAGE_GET_REQUESTED_LATENCY,
361 PA_SINK_MESSAGE_SET_STATE,
362 PA_SINK_MESSAGE_START_MOVE,
363 PA_SINK_MESSAGE_FINISH_MOVE,
364 PA_SINK_MESSAGE_SET_LATENCY_RANGE,
365 PA_SINK_MESSAGE_GET_LATENCY_RANGE,
366 PA_SINK_MESSAGE_SET_FIXED_LATENCY,
367 PA_SINK_MESSAGE_GET_FIXED_LATENCY,
368 PA_SINK_MESSAGE_GET_MAX_REWIND,
369 PA_SINK_MESSAGE_GET_MAX_REQUEST,
370 PA_SINK_MESSAGE_SET_MAX_REWIND,
371 PA_SINK_MESSAGE_SET_MAX_REQUEST,
372 PA_SINK_MESSAGE_UPDATE_VOLUME_AND_MUTE,
373 PA_SINK_MESSAGE_SET_PORT_LATENCY_OFFSET,
377 typedef struct pa_sink_new_data {
378 pa_suspend_cause_t suspend_cause;
381 pa_proplist *proplist;
390 pa_sample_spec sample_spec;
391 pa_channel_map channel_map;
392 uint32_t alternate_sample_rate;
393 bool avoid_resampling:1;
397 bool sample_spec_is_set:1;
398 bool channel_map_is_set:1;
399 bool alternate_sample_rate_is_set:1;
400 bool avoid_resampling_is_set:1;
401 bool volume_is_set:1;
411 pa_sink_new_data* pa_sink_new_data_init(pa_sink_new_data *data);
412 void pa_sink_new_data_set_name(pa_sink_new_data *data, const char *name);
413 void pa_sink_new_data_set_sample_spec(pa_sink_new_data *data, const pa_sample_spec *spec);
414 void pa_sink_new_data_set_channel_map(pa_sink_new_data *data, const pa_channel_map *map);
415 void pa_sink_new_data_set_alternate_sample_rate(pa_sink_new_data *data, const uint32_t alternate_sample_rate);
416 void pa_sink_new_data_set_avoid_resampling(pa_sink_new_data *data, bool avoid_resampling);
417 void pa_sink_new_data_set_volume(pa_sink_new_data *data, const pa_cvolume *volume);
418 void pa_sink_new_data_set_muted(pa_sink_new_data *data, bool mute);
419 void pa_sink_new_data_set_port(pa_sink_new_data *data, const char *port);
420 void pa_sink_new_data_done(pa_sink_new_data *data);
422 /*** To be called exclusively by the sink driver, from main context */
424 pa_sink* pa_sink_new(
426 pa_sink_new_data *data,
427 pa_sink_flags_t flags);
429 void pa_sink_set_get_volume_callback(pa_sink *s, pa_sink_cb_t cb);
430 void pa_sink_set_set_volume_callback(pa_sink *s, pa_sink_cb_t cb);
431 void pa_sink_set_write_volume_callback(pa_sink *s, pa_sink_cb_t cb);
432 void pa_sink_set_get_mute_callback(pa_sink *s, pa_sink_get_mute_cb_t cb);
433 void pa_sink_set_set_mute_callback(pa_sink *s, pa_sink_cb_t cb);
434 void pa_sink_enable_decibel_volume(pa_sink *s, bool enable);
436 void pa_sink_put(pa_sink *s);
437 void pa_sink_unlink(pa_sink* s);
439 void pa_sink_set_description(pa_sink *s, const char *description);
440 void pa_sink_set_asyncmsgq(pa_sink *s, pa_asyncmsgq *q);
441 void pa_sink_set_rtpoll(pa_sink *s, pa_rtpoll *p);
443 void pa_sink_set_max_rewind(pa_sink *s, size_t max_rewind);
444 void pa_sink_set_max_request(pa_sink *s, size_t max_request);
445 void pa_sink_set_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
446 void pa_sink_set_fixed_latency(pa_sink *s, pa_usec_t latency);
448 void pa_sink_set_soft_volume(pa_sink *s, const pa_cvolume *volume);
449 void pa_sink_volume_changed(pa_sink *s, const pa_cvolume *new_volume);
450 void pa_sink_mute_changed(pa_sink *s, bool new_muted);
452 void pa_sink_update_flags(pa_sink *s, pa_sink_flags_t mask, pa_sink_flags_t value);
454 bool pa_device_init_description(pa_proplist *p, pa_card *card);
455 bool pa_device_init_icon(pa_proplist *p, bool is_sink);
456 bool pa_device_init_intended_roles(pa_proplist *p);
457 unsigned pa_device_init_priority(pa_proplist *p);
459 /**** May be called by everyone, from main context */
461 void pa_sink_reconfigure(pa_sink *s, pa_sample_spec *spec, bool passthrough);
462 void pa_sink_set_port_latency_offset(pa_sink *s, int64_t offset);
464 /* The returned value is supposed to be in the time domain of the sound card! */
465 pa_usec_t pa_sink_get_latency(pa_sink *s);
466 pa_usec_t pa_sink_get_requested_latency(pa_sink *s);
467 void pa_sink_get_latency_range(pa_sink *s, pa_usec_t *min_latency, pa_usec_t *max_latency);
468 pa_usec_t pa_sink_get_fixed_latency(pa_sink *s);
470 size_t pa_sink_get_max_rewind(pa_sink *s);
471 size_t pa_sink_get_max_request(pa_sink *s);
473 int pa_sink_update_status(pa_sink*s);
474 int pa_sink_suspend(pa_sink *s, bool suspend, pa_suspend_cause_t cause);
475 int pa_sink_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause);
477 /* Use this instead of checking s->flags & PA_SINK_FLAT_VOLUME directly. */
478 bool pa_sink_flat_volume_enabled(pa_sink *s);
480 /* Get the master sink when sharing volumes */
481 pa_sink *pa_sink_get_master(pa_sink *s);
483 bool pa_sink_is_filter(pa_sink *s);
485 /* Is the sink in passthrough mode? (that is, is there a passthrough sink input
486 * connected to this sink? */
487 bool pa_sink_is_passthrough(pa_sink *s);
488 /* These should be called when a sink enters/leaves passthrough mode */
489 void pa_sink_enter_passthrough(pa_sink *s);
490 void pa_sink_leave_passthrough(pa_sink *s);
492 void pa_sink_set_volume(pa_sink *sink, const pa_cvolume *volume, bool sendmsg, bool save);
493 const pa_cvolume *pa_sink_get_volume(pa_sink *sink, bool force_refresh);
495 void pa_sink_set_mute(pa_sink *sink, bool mute, bool save);
496 bool pa_sink_get_mute(pa_sink *sink, bool force_refresh);
499 void pa_sink_update_proplist(pa_sink *s, pa_update_mode_t mode, pa_proplist *p);
500 void pa_sink_update_proplist_remote_access_permission(pa_sink *s, bool allowed);
502 bool pa_sink_update_proplist(pa_sink *s, pa_update_mode_t mode, pa_proplist *p);
505 int pa_sink_set_port(pa_sink *s, const char *name, bool save);
507 unsigned pa_sink_linked_by(pa_sink *s); /* Number of connected streams */
508 unsigned pa_sink_used_by(pa_sink *s); /* Number of connected streams which are not corked */
510 /* Returns how many streams are active that don't allow suspensions. If
511 * "ignore_input" or "ignore_output" is non-NULL, that stream is not included
512 * in the count (the returned count includes the value from
513 * pa_source_check_suspend(), which is called for the monitor source, so that's
514 * why "ignore_output" may be relevant). */
515 unsigned pa_sink_check_suspend(pa_sink *s, pa_sink_input *ignore_input, pa_source_output *ignore_output);
517 const char *pa_sink_state_to_string(pa_sink_state_t state);
519 /* Moves all inputs away, and stores them in pa_queue */
520 pa_queue *pa_sink_move_all_start(pa_sink *s, pa_queue *q);
521 void pa_sink_move_all_finish(pa_sink *s, pa_queue *q, bool save);
522 void pa_sink_move_all_fail(pa_queue *q);
524 /* Returns a copy of the sink formats. TODO: Get rid of this function (or at
525 * least get rid of the copying). There's no good reason to copy the formats
526 * every time someone wants to know what formats the sink supports. The formats
527 * idxset could be stored directly in the pa_sink struct.
528 * https://bugs.freedesktop.org/show_bug.cgi?id=71924 */
529 pa_idxset* pa_sink_get_formats(pa_sink *s);
531 bool pa_sink_set_formats(pa_sink *s, pa_idxset *formats);
532 bool pa_sink_check_format(pa_sink *s, pa_format_info *f);
533 pa_idxset* pa_sink_check_formats(pa_sink *s, pa_idxset *in_formats);
535 void pa_sink_set_sample_format(pa_sink *s, pa_sample_format_t format);
536 void pa_sink_set_sample_rate(pa_sink *s, uint32_t rate);
538 /*** To be called exclusively by the sink driver, from IO context */
540 void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result);
541 void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result);
542 void pa_sink_render_into(pa_sink*s, pa_memchunk *target);
543 void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target);
545 void pa_sink_process_rewind(pa_sink *s, size_t nbytes);
547 int pa_sink_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
549 void pa_sink_attach_within_thread(pa_sink *s);
550 void pa_sink_detach_within_thread(pa_sink *s);
552 pa_usec_t pa_sink_get_requested_latency_within_thread(pa_sink *s);
554 void pa_sink_set_max_rewind_within_thread(pa_sink *s, size_t max_rewind);
555 void pa_sink_set_max_request_within_thread(pa_sink *s, size_t max_request);
557 void pa_sink_set_latency_range_within_thread(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
558 void pa_sink_set_fixed_latency_within_thread(pa_sink *s, pa_usec_t latency);
560 void pa_sink_update_volume_and_mute(pa_sink *s);
562 bool pa_sink_volume_change_apply(pa_sink *s, pa_usec_t *usec_to_next);
564 size_t pa_sink_process_input_underruns(pa_sink *s, size_t left_to_play);
566 /*** To be called exclusively by sink input drivers, from IO context */
568 void pa_sink_request_rewind(pa_sink*s, size_t nbytes);
570 void pa_sink_invalidate_requested_latency(pa_sink *s, bool dynamic);
572 int64_t pa_sink_get_latency_within_thread(pa_sink *s, bool allow_negative);
574 /* Called from the main thread, from sink-input.c only. The normal way to set
575 * the sink reference volume is to call pa_sink_set_volume(), but the flat
576 * volume logic in sink-input.c needs also a function that doesn't do all the
577 * extra stuff that pa_sink_set_volume() does. This function simply sets
578 * s->reference_volume and fires change notifications. */
579 void pa_sink_set_reference_volume_direct(pa_sink *s, const pa_cvolume *volume);
581 /* When the default_sink is changed or the active_port of a sink is changed to
582 * PA_AVAILABLE_NO, this function is called to move the streams of the old
583 * default_sink or the sink with active_port equals PA_AVAILABLE_NO to the
584 * current default_sink conditionally*/
585 void pa_sink_move_streams_to_default_sink(pa_core *core, pa_sink *old_sink, bool default_sink_changed);
587 /* Verify that we called in IO context (aka 'thread context), or that
588 * the sink is not yet set up, i.e. the thread not set up yet. See
589 * pa_assert_io_context() in thread-mq.h for more information. */
590 #define pa_sink_assert_io_context(s) \
591 pa_assert(pa_thread_mq_get() || !PA_SINK_IS_LINKED((s)->state))