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
50 typedef enum pa_sink_avc_mode {
57 /* Returns true if sink is linked: registered and accessible from client side. */
58 static inline bool PA_SINK_IS_LINKED(pa_sink_state_t x) {
59 return x == PA_SINK_RUNNING || x == PA_SINK_IDLE || x == PA_SINK_SUSPENDED;
62 /* A generic definition for void callback functions */
63 typedef void(*pa_sink_cb_t)(pa_sink *s);
65 typedef int (*pa_sink_get_mute_cb_t)(pa_sink *s, bool *mute);
73 pa_sink_state_t state;
75 /* Set in the beginning of pa_sink_unlink() before setting the sink state
76 * to UNLINKED. The purpose is to prevent moving streams to a sink that is
77 * about to be removed. */
78 bool unlink_requested;
80 pa_sink_flags_t flags;
81 pa_suspend_cause_t suspend_cause;
84 char *driver; /* may be NULL */
85 pa_proplist *proplist;
87 pa_module *module; /* may be NULL */
88 pa_card *card; /* may be NULL */
90 pa_sample_spec sample_spec;
91 pa_channel_map channel_map;
92 uint32_t default_sample_rate;
93 uint32_t alternate_sample_rate;
94 bool avoid_resampling:1;
96 uint32_t *supported_sample_rates;
97 uint32_t selected_sample_rate;
98 pa_sample_format_t *supported_sample_formats;
99 pa_sample_format_t selected_sample_format;
100 bool origin_avoid_resampling;
105 pa_source *monitor_source;
106 pa_sink_input *input_to_master; /* non-NULL only for filter sinks */
108 pa_volume_t base_volume; /* shall be constant */
109 unsigned n_volume_steps; /* shall be constant */
111 /* Also see http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/Developer/Volumes/ */
112 pa_cvolume reference_volume; /* The volume exported and taken as reference base for relative sink input volumes */
113 pa_cvolume real_volume; /* The volume that the hardware is configured to */
114 pa_cvolume soft_volume; /* The internal software volume we apply to all PCM data while it passes through */
118 bool refresh_volume:1;
119 bool refresh_muted:1;
124 /* Saved volume state while we're in passthrough mode */
125 pa_cvolume saved_volume;
126 bool saved_save_volume:1;
128 pa_asyncmsgq *asyncmsgq;
133 pa_device_port *active_port;
134 pa_atomic_t mixer_dirty;
136 /* The latency offset is inherited from the currently active port */
137 int64_t port_latency_offset;
141 bool set_mute_in_progress;
143 /* Called when the main loop requests a state change. Called from
144 * main loop context. If returns -1 the state change will be
146 int (*set_state)(pa_sink *s, pa_sink_state_t state); /* may be NULL */
148 /* Sink drivers that support hardware volume may set this
149 * callback. This is called when the current volume needs to be
150 * re-read from the hardware.
152 * There are two ways for drivers to implement hardware volume
153 * query: either set this callback or handle
154 * PA_SINK_MESSAGE_GET_VOLUME. The callback implementation or the
155 * message handler must update s->real_volume and s->soft_volume
156 * (using pa_sink_set_soft_volume()) to match the current hardware
159 * If PA_SINK_DEFERRED_VOLUME is not set, then this is called from the
160 * main thread before sending PA_SINK_MESSAGE_GET_VOLUME, so in
161 * this case the driver can choose whether to read the volume from
162 * the hardware in the main thread or in the IO thread.
164 * If PA_SINK_DEFERRED_VOLUME is set, then this is called from the IO
165 * thread within the default handler for
166 * PA_SINK_MESSAGE_GET_VOLUME (the main thread is waiting while
167 * the message is being processed), so there's no choice of where
168 * to do the volume reading - it has to be done in the IO thread
171 * You must use the function pa_sink_set_get_volume_callback() to
172 * set this callback. */
173 pa_sink_cb_t get_volume; /* may be NULL */
175 /* Sink drivers that support hardware volume must set this
176 * callback. This is called when the hardware volume needs to be
179 * If PA_SINK_DEFERRED_VOLUME is not set, then this is called from the
180 * main thread. The callback implementation must set the hardware
181 * volume according to s->real_volume. If the driver can't set the
182 * hardware volume to the exact requested value, it has to update
183 * s->real_volume and/or s->soft_volume so that they together
184 * match the actual hardware volume that was set.
186 * If PA_SINK_DEFERRED_VOLUME is set, then this is called from the IO
187 * thread. The callback implementation must not actually set the
188 * hardware volume yet, but it must check how close to the
189 * requested volume the hardware volume can be set, and update
190 * s->real_volume and/or s->soft_volume so that they together
191 * match the actual hardware volume that will be set later in the
192 * write_volume callback.
194 * You must use the function pa_sink_set_set_volume_callback() to
195 * set this callback. */
196 pa_sink_cb_t set_volume; /* may be NULL */
198 /* Sink drivers that set PA_SINK_DEFERRED_VOLUME must provide this
199 * callback. This callback is not used with sinks that do not set
200 * PA_SINK_DEFERRED_VOLUME. This is called from the IO thread when a
201 * pending hardware volume change has to be written to the
202 * hardware. The requested volume is passed to the callback
203 * implementation in s->thread_info.current_hw_volume.
205 * The call is done inside pa_sink_volume_change_apply(), which is
206 * not called automatically - it is the driver's responsibility to
207 * schedule that function to be called at the right times in the
210 * You must use the function pa_sink_set_write_volume_callback() to
211 * set this callback. */
212 pa_sink_cb_t write_volume; /* may be NULL */
214 /* If the sink mute can change "spontaneously" (i.e. initiated by the sink
215 * implementation, not by someone else calling pa_sink_set_mute()), then
216 * the sink implementation can notify about changed mute either by calling
217 * pa_sink_mute_changed() or by calling pa_sink_get_mute() with
218 * force_refresh=true. If the implementation chooses the latter approach,
219 * it should implement the get_mute callback. Otherwise get_mute can be
222 * This is called when pa_sink_get_mute() is called with
223 * force_refresh=true. This is called from the IO thread if the
224 * PA_SINK_DEFERRED_VOLUME flag is set, otherwise this is called from the
225 * main thread. On success, the implementation is expected to return 0 and
226 * set the mute parameter that is passed as a reference. On failure, the
227 * implementation is expected to return -1.
229 * You must use the function pa_sink_set_get_mute_callback() to
230 * set this callback. */
231 pa_sink_get_mute_cb_t get_mute;
233 /* Called when the mute setting shall be changed. A PA_SINK_MESSAGE_SET_MUTE
234 * message will also be sent. Called from IO thread if PA_SINK_DEFERRED_VOLUME
235 * flag is set otherwise from main loop context.
237 * You must use the function pa_sink_set_set_mute_callback() to
238 * set this callback. */
239 pa_sink_cb_t set_mute; /* may be NULL */
241 /* Called when a rewind request is issued. Called from IO thread
243 pa_sink_cb_t request_rewind; /* may be NULL */
245 /* Called when a the requested latency is changed. Called from IO
247 pa_sink_cb_t update_requested_latency; /* may be NULL */
249 /* Called whenever the port shall be changed. Called from IO
250 * thread if deferred volumes are enabled, and main thread otherwise. */
251 int (*set_port)(pa_sink *s, pa_device_port *port); /* may be NULL */
253 /* Called to get the list of formats supported by the sink, sorted
254 * in descending order of preference. */
255 pa_idxset* (*get_formats)(pa_sink *s); /* may be NULL */
257 /* Called to set the list of formats supported by the sink. Can be
258 * NULL if the sink does not support this. Returns true on success,
259 * false otherwise (for example when an unsupportable format is
260 * set). Makes a copy of the formats passed in. */
261 bool (*set_formats)(pa_sink *s, pa_idxset *formats); /* may be NULL */
263 /* Called whenever device parameters need to be changed. Called from
265 void (*reconfigure)(pa_sink *s, pa_sample_spec *spec, bool passthrough);
267 /* Contains copies of the above data so that the real-time worker
268 * thread can work without access locking */
270 pa_sink_state_t state;
275 pa_cvolume soft_volume;
278 /* The requested latency is used for dynamic latency
279 * sinks. For fixed latency sinks it is always identical to
280 * the fixed_latency. See below. */
281 bool requested_latency_valid:1;
282 pa_usec_t requested_latency;
284 /* The number of bytes streams need to keep around as history to
285 * be able to satisfy every DMA buffer rewrite */
288 /* The number of bytes streams need to keep around to satisfy
289 * every DMA write request */
292 /* Maximum of what clients requested to rewind in this cycle */
293 size_t rewind_nbytes;
294 bool rewind_requested;
296 /* Both dynamic and fixed latencies will be clamped to this
298 pa_usec_t min_latency; /* we won't go below this latency */
299 pa_usec_t max_latency; /* An upper limit for the latencies */
301 /* 'Fixed' simply means that the latency is exclusively
302 * decided on by the sink, and the clients have no influence
304 pa_usec_t fixed_latency; /* for sinks with PA_SINK_DYNAMIC_LATENCY this is 0 */
306 /* This latency offset is a direct copy from s->port_latency_offset */
307 int64_t port_latency_offset;
309 /* Delayed volume change events are queued here. The events
310 * are stored in expiration order. The one expiring next is in
311 * the head of the list. */
312 PA_LLIST_HEAD(pa_sink_volume_change, volume_changes);
313 pa_sink_volume_change *volume_changes_tail;
314 /* This value is updated in pa_sink_volume_change_apply() and
315 * used only by sinks with PA_SINK_DEFERRED_VOLUME. */
316 pa_cvolume current_hw_volume;
318 /* The amount of usec volume up events are delayed and volume
319 * down events are made earlier. */
320 uint32_t volume_change_safety_margin;
321 /* Usec delay added to all volume change events, may be negative. */
322 int32_t volume_change_extra_delay;
329 bool use_internal_codec;
330 pa_sink_avc_mode_t avc_mode;
335 PA_DECLARE_PUBLIC_CLASS(pa_sink);
336 #define PA_SINK(s) (pa_sink_cast(s))
338 typedef enum pa_sink_message {
339 PA_SINK_MESSAGE_ADD_INPUT,
340 PA_SINK_MESSAGE_REMOVE_INPUT,
341 PA_SINK_MESSAGE_GET_VOLUME,
342 PA_SINK_MESSAGE_SET_SHARED_VOLUME,
343 PA_SINK_MESSAGE_SET_VOLUME_SYNCED,
344 PA_SINK_MESSAGE_SET_VOLUME,
345 PA_SINK_MESSAGE_SYNC_VOLUMES,
346 PA_SINK_MESSAGE_GET_MUTE,
347 PA_SINK_MESSAGE_SET_MUTE,
348 PA_SINK_MESSAGE_GET_LATENCY,
349 PA_SINK_MESSAGE_GET_REQUESTED_LATENCY,
350 PA_SINK_MESSAGE_SET_STATE,
351 PA_SINK_MESSAGE_START_MOVE,
352 PA_SINK_MESSAGE_FINISH_MOVE,
353 PA_SINK_MESSAGE_SET_LATENCY_RANGE,
354 PA_SINK_MESSAGE_GET_LATENCY_RANGE,
355 PA_SINK_MESSAGE_SET_FIXED_LATENCY,
356 PA_SINK_MESSAGE_GET_FIXED_LATENCY,
357 PA_SINK_MESSAGE_GET_MAX_REWIND,
358 PA_SINK_MESSAGE_GET_MAX_REQUEST,
359 PA_SINK_MESSAGE_SET_MAX_REWIND,
360 PA_SINK_MESSAGE_SET_MAX_REQUEST,
361 PA_SINK_MESSAGE_SET_PORT,
362 PA_SINK_MESSAGE_UPDATE_VOLUME_AND_MUTE,
363 PA_SINK_MESSAGE_SET_PORT_LATENCY_OFFSET,
367 typedef struct pa_sink_new_data {
368 pa_suspend_cause_t suspend_cause;
371 pa_proplist *proplist;
380 pa_sample_spec sample_spec;
381 pa_channel_map channel_map;
382 uint32_t alternate_sample_rate;
383 bool avoid_resampling:1;
387 bool sample_spec_is_set:1;
388 bool channel_map_is_set:1;
389 bool alternate_sample_rate_is_set:1;
390 bool volume_is_set:1;
400 pa_sink_new_data* pa_sink_new_data_init(pa_sink_new_data *data);
401 void pa_sink_new_data_set_name(pa_sink_new_data *data, const char *name);
402 void pa_sink_new_data_set_sample_spec(pa_sink_new_data *data, const pa_sample_spec *spec);
403 void pa_sink_new_data_set_channel_map(pa_sink_new_data *data, const pa_channel_map *map);
404 void pa_sink_new_data_set_alternate_sample_rate(pa_sink_new_data *data, const uint32_t alternate_sample_rate);
405 void pa_sink_new_data_set_volume(pa_sink_new_data *data, const pa_cvolume *volume);
406 void pa_sink_new_data_set_muted(pa_sink_new_data *data, bool mute);
407 void pa_sink_new_data_set_port(pa_sink_new_data *data, const char *port);
408 void pa_sink_new_data_done(pa_sink_new_data *data);
410 /*** To be called exclusively by the sink driver, from main context */
412 pa_sink* pa_sink_new(
414 pa_sink_new_data *data,
415 pa_sink_flags_t flags);
417 void pa_sink_set_get_volume_callback(pa_sink *s, pa_sink_cb_t cb);
418 void pa_sink_set_set_volume_callback(pa_sink *s, pa_sink_cb_t cb);
419 void pa_sink_set_write_volume_callback(pa_sink *s, pa_sink_cb_t cb);
420 void pa_sink_set_get_mute_callback(pa_sink *s, pa_sink_get_mute_cb_t cb);
421 void pa_sink_set_set_mute_callback(pa_sink *s, pa_sink_cb_t cb);
422 void pa_sink_enable_decibel_volume(pa_sink *s, bool enable);
424 void pa_sink_put(pa_sink *s);
425 void pa_sink_unlink(pa_sink* s);
427 void pa_sink_set_description(pa_sink *s, const char *description);
428 void pa_sink_set_asyncmsgq(pa_sink *s, pa_asyncmsgq *q);
429 void pa_sink_set_rtpoll(pa_sink *s, pa_rtpoll *p);
431 void pa_sink_set_max_rewind(pa_sink *s, size_t max_rewind);
432 void pa_sink_set_max_request(pa_sink *s, size_t max_request);
433 void pa_sink_set_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
434 void pa_sink_set_fixed_latency(pa_sink *s, pa_usec_t latency);
436 void pa_sink_set_soft_volume(pa_sink *s, const pa_cvolume *volume);
437 void pa_sink_volume_changed(pa_sink *s, const pa_cvolume *new_volume);
438 void pa_sink_mute_changed(pa_sink *s, bool new_muted);
440 void pa_sink_update_flags(pa_sink *s, pa_sink_flags_t mask, pa_sink_flags_t value);
442 bool pa_device_init_description(pa_proplist *p, pa_card *card);
443 bool pa_device_init_icon(pa_proplist *p, bool is_sink);
444 bool pa_device_init_intended_roles(pa_proplist *p);
445 unsigned pa_device_init_priority(pa_proplist *p);
447 /**** May be called by everyone, from main context */
449 void pa_sink_reconfigure(pa_sink *s, pa_sample_spec *spec, bool passthrough);
450 void pa_sink_set_port_latency_offset(pa_sink *s, int64_t offset);
452 /* The returned value is supposed to be in the time domain of the sound card! */
453 pa_usec_t pa_sink_get_latency(pa_sink *s);
454 pa_usec_t pa_sink_get_requested_latency(pa_sink *s);
455 void pa_sink_get_latency_range(pa_sink *s, pa_usec_t *min_latency, pa_usec_t *max_latency);
456 pa_usec_t pa_sink_get_fixed_latency(pa_sink *s);
458 size_t pa_sink_get_max_rewind(pa_sink *s);
459 size_t pa_sink_get_max_request(pa_sink *s);
461 int pa_sink_update_status(pa_sink*s);
462 int pa_sink_suspend(pa_sink *s, bool suspend, pa_suspend_cause_t cause);
463 int pa_sink_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause);
465 /* Use this instead of checking s->flags & PA_SINK_FLAT_VOLUME directly. */
466 bool pa_sink_flat_volume_enabled(pa_sink *s);
468 /* Get the master sink when sharing volumes */
469 pa_sink *pa_sink_get_master(pa_sink *s);
471 bool pa_sink_is_filter(pa_sink *s);
473 /* Is the sink in passthrough mode? (that is, is there a passthrough sink input
474 * connected to this sink? */
475 bool pa_sink_is_passthrough(pa_sink *s);
476 /* These should be called when a sink enters/leaves passthrough mode */
477 void pa_sink_enter_passthrough(pa_sink *s);
478 void pa_sink_leave_passthrough(pa_sink *s);
480 void pa_sink_set_volume(pa_sink *sink, const pa_cvolume *volume, bool sendmsg, bool save);
481 const pa_cvolume *pa_sink_get_volume(pa_sink *sink, bool force_refresh);
483 void pa_sink_set_mute(pa_sink *sink, bool mute, bool save);
484 bool pa_sink_get_mute(pa_sink *sink, bool force_refresh);
486 bool pa_sink_update_proplist(pa_sink *s, pa_update_mode_t mode, pa_proplist *p);
488 int pa_sink_set_port(pa_sink *s, const char *name, bool save);
489 void pa_sink_set_mixer_dirty(pa_sink *s, bool is_dirty);
491 unsigned pa_sink_linked_by(pa_sink *s); /* Number of connected streams */
492 unsigned pa_sink_used_by(pa_sink *s); /* Number of connected streams which are not corked */
494 /* Returns how many streams are active that don't allow suspensions. If
495 * "ignore_input" or "ignore_output" is non-NULL, that stream is not included
496 * in the count (the returned count includes the value from
497 * pa_source_check_suspend(), which is called for the monitor source, so that's
498 * why "ignore_output" may be relevant). */
499 unsigned pa_sink_check_suspend(pa_sink *s, pa_sink_input *ignore_input, pa_source_output *ignore_output);
501 #define pa_sink_get_state(s) ((s)->state)
503 const char *pa_sink_state_to_string(pa_sink_state_t state);
505 /* Moves all inputs away, and stores them in pa_queue */
506 pa_queue *pa_sink_move_all_start(pa_sink *s, pa_queue *q);
507 void pa_sink_move_all_finish(pa_sink *s, pa_queue *q, bool save);
508 void pa_sink_move_all_fail(pa_queue *q);
510 /* Returns a copy of the sink formats. TODO: Get rid of this function (or at
511 * least get rid of the copying). There's no good reason to copy the formats
512 * every time someone wants to know what formats the sink supports. The formats
513 * idxset could be stored directly in the pa_sink struct.
514 * https://bugs.freedesktop.org/show_bug.cgi?id=71924 */
515 pa_idxset* pa_sink_get_formats(pa_sink *s);
517 bool pa_sink_set_formats(pa_sink *s, pa_idxset *formats);
518 bool pa_sink_check_format(pa_sink *s, pa_format_info *f);
519 pa_idxset* pa_sink_check_formats(pa_sink *s, pa_idxset *in_formats);
521 void pa_sink_set_sample_format(pa_sink *s, pa_sample_format_t format);
522 void pa_sink_set_sample_rate(pa_sink *s, uint32_t rate);
524 /*** To be called exclusively by the sink driver, from IO context */
526 void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result);
527 void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result);
528 void pa_sink_render_into(pa_sink*s, pa_memchunk *target);
529 void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target);
531 void pa_sink_process_rewind(pa_sink *s, size_t nbytes);
533 int pa_sink_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
535 void pa_sink_attach_within_thread(pa_sink *s);
536 void pa_sink_detach_within_thread(pa_sink *s);
538 pa_usec_t pa_sink_get_requested_latency_within_thread(pa_sink *s);
540 void pa_sink_set_max_rewind_within_thread(pa_sink *s, size_t max_rewind);
541 void pa_sink_set_max_request_within_thread(pa_sink *s, size_t max_request);
543 void pa_sink_set_latency_range_within_thread(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
544 void pa_sink_set_fixed_latency_within_thread(pa_sink *s, pa_usec_t latency);
546 void pa_sink_update_volume_and_mute(pa_sink *s);
548 bool pa_sink_volume_change_apply(pa_sink *s, pa_usec_t *usec_to_next);
550 size_t pa_sink_process_input_underruns(pa_sink *s, size_t left_to_play);
552 /*** To be called exclusively by sink input drivers, from IO context */
554 void pa_sink_request_rewind(pa_sink*s, size_t nbytes);
556 void pa_sink_invalidate_requested_latency(pa_sink *s, bool dynamic);
558 int64_t pa_sink_get_latency_within_thread(pa_sink *s, bool allow_negative);
560 /* Called from the main thread, from sink-input.c only. The normal way to set
561 * the sink reference volume is to call pa_sink_set_volume(), but the flat
562 * volume logic in sink-input.c needs also a function that doesn't do all the
563 * extra stuff that pa_sink_set_volume() does. This function simply sets
564 * s->reference_volume and fires change notifications. */
565 void pa_sink_set_reference_volume_direct(pa_sink *s, const pa_cvolume *volume);
569 void pa_sink_set_avc_mode(pa_sink *s, pa_sink_avc_mode_t mode);
570 pa_sink_avc_mode_t pa_sink_get_avc_mode(pa_sink *s);
573 /* Verify that we called in IO context (aka 'thread context), or that
574 * the sink is not yet set up, i.e. the thread not set up yet. See
575 * pa_assert_io_context() in thread-mq.h for more information. */
576 #define pa_sink_assert_io_context(s) \
577 pa_assert(pa_thread_mq_get() || !PA_SINK_IS_LINKED((s)->state))