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;
89 pa_source *monitor_source;
90 pa_sink_input *input_to_master; /* non-NULL only for filter sinks */
92 pa_volume_t base_volume; /* shall be constant */
93 unsigned n_volume_steps; /* shall be constant */
95 /* Also see http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/Developer/Volumes/ */
96 pa_cvolume reference_volume; /* The volume exported and taken as reference base for relative sink input volumes */
97 pa_cvolume real_volume; /* The volume that the hardware is configured to */
98 pa_cvolume soft_volume; /* The internal software volume we apply to all PCM data while it passes through */
102 bool refresh_volume:1;
103 bool refresh_muted:1;
108 /* Saved volume state while we're in passthrough mode */
109 pa_cvolume saved_volume;
110 bool saved_save_volume:1;
112 pa_asyncmsgq *asyncmsgq;
117 pa_device_port *active_port;
119 /* The latency offset is inherited from the currently active port */
120 int64_t port_latency_offset;
124 bool set_mute_in_progress;
126 /* Callbacks for doing things when the sink state and/or suspend cause is
127 * changed. It's fine to set either or both of the callbacks to NULL if the
128 * implementation doesn't have anything to do on state or suspend cause
131 * set_state_in_main_thread() is called first. The callback is allowed to
132 * report failure if and only if the sink changes its state from
133 * SUSPENDED to IDLE or RUNNING. (FIXME: It would make sense to allow
134 * failure also when changing state from INIT to IDLE or RUNNING, but
135 * currently that will crash pa_sink_put().) If
136 * set_state_in_main_thread() fails, set_state_in_io_thread() won't be
139 * If set_state_in_main_thread() is successful (or not set), then
140 * set_state_in_io_thread() is called. Again, failure is allowed if and
141 * only if the sink changes state from SUSPENDED to IDLE or RUNNING. If
142 * set_state_in_io_thread() fails, then set_state_in_main_thread() is
143 * called again, this time with the state parameter set to SUSPENDED and
144 * the suspend_cause parameter set to 0.
146 * pa_sink.state, pa_sink.thread_info.state and pa_sink.suspend_cause
147 * are updated only after all the callback calls. In case of failure, the
148 * state is set to SUSPENDED and the suspend cause is set to 0. */
149 int (*set_state_in_main_thread)(pa_sink *s, pa_sink_state_t state, pa_suspend_cause_t suspend_cause); /* may be NULL */
150 int (*set_state_in_io_thread)(pa_sink *s, pa_sink_state_t state, pa_suspend_cause_t suspend_cause); /* may be NULL */
152 /* Sink drivers that support hardware volume may set this
153 * callback. This is called when the current volume needs to be
154 * re-read from the hardware.
156 * There are two ways for drivers to implement hardware volume
157 * query: either set this callback or handle
158 * PA_SINK_MESSAGE_GET_VOLUME. The callback implementation or the
159 * message handler must update s->real_volume and s->soft_volume
160 * (using pa_sink_set_soft_volume()) to match the current hardware
163 * If PA_SINK_DEFERRED_VOLUME is not set, then this is called from the
164 * main thread before sending PA_SINK_MESSAGE_GET_VOLUME, so in
165 * this case the driver can choose whether to read the volume from
166 * the hardware in the main thread or in the IO thread.
168 * If PA_SINK_DEFERRED_VOLUME is set, then this is called from the IO
169 * thread within the default handler for
170 * PA_SINK_MESSAGE_GET_VOLUME (the main thread is waiting while
171 * the message is being processed), so there's no choice of where
172 * to do the volume reading - it has to be done in the IO thread
175 * You must use the function pa_sink_set_get_volume_callback() to
176 * set this callback. */
177 pa_sink_cb_t get_volume; /* may be NULL */
179 /* Sink drivers that support hardware volume must set this
180 * callback. This is called when the hardware volume needs to be
183 * If PA_SINK_DEFERRED_VOLUME is not set, then this is called from the
184 * main thread. The callback implementation must set the hardware
185 * volume according to s->real_volume. If the driver can't set the
186 * hardware volume to the exact requested value, it has to update
187 * s->real_volume and/or s->soft_volume so that they together
188 * match the actual hardware volume that was set.
190 * If PA_SINK_DEFERRED_VOLUME is set, then this is called from the IO
191 * thread. The callback implementation must not actually set the
192 * hardware volume yet, but it must check how close to the
193 * requested volume the hardware volume can be set, and update
194 * s->real_volume and/or s->soft_volume so that they together
195 * match the actual hardware volume that will be set later in the
196 * write_volume callback.
198 * You must use the function pa_sink_set_set_volume_callback() to
199 * set this callback. */
200 pa_sink_cb_t set_volume; /* may be NULL */
202 /* Sink drivers that set PA_SINK_DEFERRED_VOLUME must provide this
203 * callback. This callback is not used with sinks that do not set
204 * PA_SINK_DEFERRED_VOLUME. This is called from the IO thread when a
205 * pending hardware volume change has to be written to the
206 * hardware. The requested volume is passed to the callback
207 * implementation in s->thread_info.current_hw_volume.
209 * The call is done inside pa_sink_volume_change_apply(), which is
210 * not called automatically - it is the driver's responsibility to
211 * schedule that function to be called at the right times in the
214 * You must use the function pa_sink_set_write_volume_callback() to
215 * set this callback. */
216 pa_sink_cb_t write_volume; /* may be NULL */
218 /* If the sink mute can change "spontaneously" (i.e. initiated by the sink
219 * implementation, not by someone else calling pa_sink_set_mute()), then
220 * the sink implementation can notify about changed mute either by calling
221 * pa_sink_mute_changed() or by calling pa_sink_get_mute() with
222 * force_refresh=true. If the implementation chooses the latter approach,
223 * it should implement the get_mute callback. Otherwise get_mute can be
226 * This is called when pa_sink_get_mute() is called with
227 * force_refresh=true. This is called from the IO thread if the
228 * PA_SINK_DEFERRED_VOLUME flag is set, otherwise this is called from the
229 * main thread. On success, the implementation is expected to return 0 and
230 * set the mute parameter that is passed as a reference. On failure, the
231 * implementation is expected to return -1.
233 * You must use the function pa_sink_set_get_mute_callback() to
234 * set this callback. */
235 pa_sink_get_mute_cb_t get_mute;
237 /* Called when the mute setting shall be changed. A PA_SINK_MESSAGE_SET_MUTE
238 * message will also be sent. Called from IO thread if PA_SINK_DEFERRED_VOLUME
239 * flag is set otherwise from main loop context.
241 * You must use the function pa_sink_set_set_mute_callback() to
242 * set this callback. */
243 pa_sink_cb_t set_mute; /* may be NULL */
245 /* Called when a rewind request is issued. Called from IO thread
247 pa_sink_cb_t request_rewind; /* may be NULL */
249 /* Called when a the requested latency is changed. Called from IO
251 pa_sink_cb_t update_requested_latency; /* may be NULL */
253 /* Called whenever the port shall be changed. Called from the main
255 int (*set_port)(pa_sink *s, pa_device_port *port); /* may be NULL */
257 /* Called to get the list of formats supported by the sink, sorted
258 * in descending order of preference. */
259 pa_idxset* (*get_formats)(pa_sink *s); /* may be NULL */
261 /* Called to set the list of formats supported by the sink. Can be
262 * NULL if the sink does not support this. Returns true on success,
263 * false otherwise (for example when an unsupportable format is
264 * set). Makes a copy of the formats passed in. */
265 bool (*set_formats)(pa_sink *s, pa_idxset *formats); /* may be NULL */
267 /* Called whenever device parameters need to be changed. Called from
269 int (*reconfigure)(pa_sink *s, pa_sample_spec *spec, bool passthrough);
271 /* Contains copies of the above data so that the real-time worker
272 * thread can work without access locking */
274 pa_sink_state_t state;
279 pa_cvolume soft_volume;
282 /* The requested latency is used for dynamic latency
283 * sinks. For fixed latency sinks it is always identical to
284 * the fixed_latency. See below. */
285 bool requested_latency_valid:1;
286 pa_usec_t requested_latency;
288 /* The number of bytes streams need to keep around as history to
289 * be able to satisfy every DMA buffer rewrite */
292 /* The number of bytes streams need to keep around to satisfy
293 * every DMA write request */
296 /* Maximum of what clients requested to rewind in this cycle */
297 size_t rewind_nbytes;
298 bool rewind_requested;
300 /* Both dynamic and fixed latencies will be clamped to this
302 pa_usec_t min_latency; /* we won't go below this latency */
303 pa_usec_t max_latency; /* An upper limit for the latencies */
305 /* 'Fixed' simply means that the latency is exclusively
306 * decided on by the sink, and the clients have no influence
308 pa_usec_t fixed_latency; /* for sinks with PA_SINK_DYNAMIC_LATENCY this is 0 */
310 /* This latency offset is a direct copy from s->port_latency_offset */
311 int64_t port_latency_offset;
313 /* Delayed volume change events are queued here. The events
314 * are stored in expiration order. The one expiring next is in
315 * the head of the list. */
316 PA_LLIST_HEAD(pa_sink_volume_change, volume_changes);
317 pa_sink_volume_change *volume_changes_tail;
318 /* This value is updated in pa_sink_volume_change_apply() and
319 * used only by sinks with PA_SINK_DEFERRED_VOLUME. */
320 pa_cvolume current_hw_volume;
322 /* The amount of usec volume up events are delayed and volume
323 * down events are made earlier. */
324 uint32_t volume_change_safety_margin;
325 /* Usec delay added to all volume change events, may be negative. */
326 int32_t volume_change_extra_delay;
332 PA_DECLARE_PUBLIC_CLASS(pa_sink);
333 #define PA_SINK(s) (pa_sink_cast(s))
335 typedef enum pa_sink_message {
336 PA_SINK_MESSAGE_ADD_INPUT,
337 PA_SINK_MESSAGE_REMOVE_INPUT,
338 PA_SINK_MESSAGE_GET_VOLUME,
339 PA_SINK_MESSAGE_SET_SHARED_VOLUME,
340 PA_SINK_MESSAGE_SET_VOLUME_SYNCED,
341 PA_SINK_MESSAGE_SET_VOLUME,
342 PA_SINK_MESSAGE_SYNC_VOLUMES,
343 PA_SINK_MESSAGE_GET_MUTE,
344 PA_SINK_MESSAGE_SET_MUTE,
345 PA_SINK_MESSAGE_GET_LATENCY,
346 PA_SINK_MESSAGE_GET_REQUESTED_LATENCY,
347 PA_SINK_MESSAGE_SET_STATE,
348 PA_SINK_MESSAGE_START_MOVE,
349 PA_SINK_MESSAGE_FINISH_MOVE,
350 PA_SINK_MESSAGE_SET_LATENCY_RANGE,
351 PA_SINK_MESSAGE_GET_LATENCY_RANGE,
352 PA_SINK_MESSAGE_SET_FIXED_LATENCY,
353 PA_SINK_MESSAGE_GET_FIXED_LATENCY,
354 PA_SINK_MESSAGE_GET_MAX_REWIND,
355 PA_SINK_MESSAGE_GET_MAX_REQUEST,
356 PA_SINK_MESSAGE_SET_MAX_REWIND,
357 PA_SINK_MESSAGE_SET_MAX_REQUEST,
358 PA_SINK_MESSAGE_UPDATE_VOLUME_AND_MUTE,
359 PA_SINK_MESSAGE_SET_PORT_LATENCY_OFFSET,
363 typedef struct pa_sink_new_data {
364 pa_suspend_cause_t suspend_cause;
367 pa_proplist *proplist;
376 pa_sample_spec sample_spec;
377 pa_channel_map channel_map;
378 uint32_t alternate_sample_rate;
382 bool sample_spec_is_set:1;
383 bool channel_map_is_set:1;
384 bool alternate_sample_rate_is_set:1;
385 bool volume_is_set:1;
395 pa_sink_new_data* pa_sink_new_data_init(pa_sink_new_data *data);
396 void pa_sink_new_data_set_name(pa_sink_new_data *data, const char *name);
397 void pa_sink_new_data_set_sample_spec(pa_sink_new_data *data, const pa_sample_spec *spec);
398 void pa_sink_new_data_set_channel_map(pa_sink_new_data *data, const pa_channel_map *map);
399 void pa_sink_new_data_set_alternate_sample_rate(pa_sink_new_data *data, const uint32_t alternate_sample_rate);
400 void pa_sink_new_data_set_volume(pa_sink_new_data *data, const pa_cvolume *volume);
401 void pa_sink_new_data_set_muted(pa_sink_new_data *data, bool mute);
402 void pa_sink_new_data_set_port(pa_sink_new_data *data, const char *port);
403 void pa_sink_new_data_done(pa_sink_new_data *data);
405 /*** To be called exclusively by the sink driver, from main context */
407 pa_sink* pa_sink_new(
409 pa_sink_new_data *data,
410 pa_sink_flags_t flags);
412 void pa_sink_set_get_volume_callback(pa_sink *s, pa_sink_cb_t cb);
413 void pa_sink_set_set_volume_callback(pa_sink *s, pa_sink_cb_t cb);
414 void pa_sink_set_write_volume_callback(pa_sink *s, pa_sink_cb_t cb);
415 void pa_sink_set_get_mute_callback(pa_sink *s, pa_sink_get_mute_cb_t cb);
416 void pa_sink_set_set_mute_callback(pa_sink *s, pa_sink_cb_t cb);
417 void pa_sink_enable_decibel_volume(pa_sink *s, bool enable);
419 void pa_sink_put(pa_sink *s);
420 void pa_sink_unlink(pa_sink* s);
422 void pa_sink_set_description(pa_sink *s, const char *description);
423 void pa_sink_set_asyncmsgq(pa_sink *s, pa_asyncmsgq *q);
424 void pa_sink_set_rtpoll(pa_sink *s, pa_rtpoll *p);
426 void pa_sink_set_max_rewind(pa_sink *s, size_t max_rewind);
427 void pa_sink_set_max_request(pa_sink *s, size_t max_request);
428 void pa_sink_set_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
429 void pa_sink_set_fixed_latency(pa_sink *s, pa_usec_t latency);
431 void pa_sink_set_soft_volume(pa_sink *s, const pa_cvolume *volume);
432 void pa_sink_volume_changed(pa_sink *s, const pa_cvolume *new_volume);
433 void pa_sink_mute_changed(pa_sink *s, bool new_muted);
435 void pa_sink_update_flags(pa_sink *s, pa_sink_flags_t mask, pa_sink_flags_t value);
437 bool pa_device_init_description(pa_proplist *p, pa_card *card);
438 bool pa_device_init_icon(pa_proplist *p, bool is_sink);
439 bool pa_device_init_intended_roles(pa_proplist *p);
440 unsigned pa_device_init_priority(pa_proplist *p);
442 /**** May be called by everyone, from main context */
444 int pa_sink_reconfigure(pa_sink *s, pa_sample_spec *spec, bool passthrough);
445 void pa_sink_set_port_latency_offset(pa_sink *s, int64_t offset);
447 /* The returned value is supposed to be in the time domain of the sound card! */
448 pa_usec_t pa_sink_get_latency(pa_sink *s);
449 pa_usec_t pa_sink_get_requested_latency(pa_sink *s);
450 void pa_sink_get_latency_range(pa_sink *s, pa_usec_t *min_latency, pa_usec_t *max_latency);
451 pa_usec_t pa_sink_get_fixed_latency(pa_sink *s);
453 size_t pa_sink_get_max_rewind(pa_sink *s);
454 size_t pa_sink_get_max_request(pa_sink *s);
456 int pa_sink_update_status(pa_sink*s);
457 int pa_sink_suspend(pa_sink *s, bool suspend, pa_suspend_cause_t cause);
458 int pa_sink_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause);
460 /* Use this instead of checking s->flags & PA_SINK_FLAT_VOLUME directly. */
461 bool pa_sink_flat_volume_enabled(pa_sink *s);
463 /* Get the master sink when sharing volumes */
464 pa_sink *pa_sink_get_master(pa_sink *s);
466 bool pa_sink_is_filter(pa_sink *s);
468 /* Is the sink in passthrough mode? (that is, is there a passthrough sink input
469 * connected to this sink? */
470 bool pa_sink_is_passthrough(pa_sink *s);
471 /* These should be called when a sink enters/leaves passthrough mode */
472 void pa_sink_enter_passthrough(pa_sink *s);
473 void pa_sink_leave_passthrough(pa_sink *s);
475 void pa_sink_set_volume(pa_sink *sink, const pa_cvolume *volume, bool sendmsg, bool save);
476 const pa_cvolume *pa_sink_get_volume(pa_sink *sink, bool force_refresh);
478 void pa_sink_set_mute(pa_sink *sink, bool mute, bool save);
479 bool pa_sink_get_mute(pa_sink *sink, bool force_refresh);
481 bool pa_sink_update_proplist(pa_sink *s, pa_update_mode_t mode, pa_proplist *p);
483 int pa_sink_set_port(pa_sink *s, const char *name, bool save);
485 unsigned pa_sink_linked_by(pa_sink *s); /* Number of connected streams */
486 unsigned pa_sink_used_by(pa_sink *s); /* Number of connected streams which are not corked */
488 /* Returns how many streams are active that don't allow suspensions. If
489 * "ignore_input" or "ignore_output" is non-NULL, that stream is not included
490 * in the count (the returned count includes the value from
491 * pa_source_check_suspend(), which is called for the monitor source, so that's
492 * why "ignore_output" may be relevant). */
493 unsigned pa_sink_check_suspend(pa_sink *s, pa_sink_input *ignore_input, pa_source_output *ignore_output);
495 #define pa_sink_get_state(s) ((s)->state)
497 const char *pa_sink_state_to_string(pa_sink_state_t state);
499 /* Moves all inputs away, and stores them in pa_queue */
500 pa_queue *pa_sink_move_all_start(pa_sink *s, pa_queue *q);
501 void pa_sink_move_all_finish(pa_sink *s, pa_queue *q, bool save);
502 void pa_sink_move_all_fail(pa_queue *q);
504 /* Returns a copy of the sink formats. TODO: Get rid of this function (or at
505 * least get rid of the copying). There's no good reason to copy the formats
506 * every time someone wants to know what formats the sink supports. The formats
507 * idxset could be stored directly in the pa_sink struct.
508 * https://bugs.freedesktop.org/show_bug.cgi?id=71924 */
509 pa_idxset* pa_sink_get_formats(pa_sink *s);
511 bool pa_sink_set_formats(pa_sink *s, pa_idxset *formats);
512 bool pa_sink_check_format(pa_sink *s, pa_format_info *f);
513 pa_idxset* pa_sink_check_formats(pa_sink *s, pa_idxset *in_formats);
515 /*** To be called exclusively by the sink driver, from IO context */
517 void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result);
518 void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result);
519 void pa_sink_render_into(pa_sink*s, pa_memchunk *target);
520 void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target);
522 void pa_sink_process_rewind(pa_sink *s, size_t nbytes);
524 int pa_sink_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
526 void pa_sink_attach_within_thread(pa_sink *s);
527 void pa_sink_detach_within_thread(pa_sink *s);
529 pa_usec_t pa_sink_get_requested_latency_within_thread(pa_sink *s);
531 void pa_sink_set_max_rewind_within_thread(pa_sink *s, size_t max_rewind);
532 void pa_sink_set_max_request_within_thread(pa_sink *s, size_t max_request);
534 void pa_sink_set_latency_range_within_thread(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
535 void pa_sink_set_fixed_latency_within_thread(pa_sink *s, pa_usec_t latency);
537 void pa_sink_update_volume_and_mute(pa_sink *s);
539 bool pa_sink_volume_change_apply(pa_sink *s, pa_usec_t *usec_to_next);
541 size_t pa_sink_process_input_underruns(pa_sink *s, size_t left_to_play);
543 /*** To be called exclusively by sink input drivers, from IO context */
545 void pa_sink_request_rewind(pa_sink*s, size_t nbytes);
547 void pa_sink_invalidate_requested_latency(pa_sink *s, bool dynamic);
549 int64_t pa_sink_get_latency_within_thread(pa_sink *s, bool allow_negative);
551 /* Called from the main thread, from sink-input.c only. The normal way to set
552 * the sink reference volume is to call pa_sink_set_volume(), but the flat
553 * volume logic in sink-input.c needs also a function that doesn't do all the
554 * extra stuff that pa_sink_set_volume() does. This function simply sets
555 * s->reference_volume and fires change notifications. */
556 void pa_sink_set_reference_volume_direct(pa_sink *s, const pa_cvolume *volume);
558 /* Verify that we called in IO context (aka 'thread context), or that
559 * the sink is not yet set up, i.e. the thread not set up yet. See
560 * pa_assert_io_context() in thread-mq.h for more information. */
561 #define pa_sink_assert_io_context(s) \
562 pa_assert(pa_thread_mq_get() || !PA_SINK_IS_LINKED((s)->state))