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1 : : #ifndef foopulsesinkhfoo
2 : : #define foopulsesinkhfoo
3 : :
4 : : /***
5 : : This file is part of PulseAudio.
6 : :
7 : : Copyright 2004-2006 Lennart Poettering
8 : : Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
9 : :
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.
14 : :
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.
19 : :
20 : : You should have received a copy of the GNU Lesser General Public License
21 : : along with PulseAudio; if not, write to the Free Software
22 : : Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
23 : : USA.
24 : : ***/
25 : :
26 : : typedef struct pa_sink pa_sink;
27 : : typedef struct pa_sink_volume_change pa_sink_volume_change;
28 : :
29 : : #include <inttypes.h>
30 : :
31 : : #include <pulse/def.h>
32 : : #include <pulse/format.h>
33 : : #include <pulse/sample.h>
34 : : #include <pulse/channelmap.h>
35 : : #include <pulse/volume.h>
36 : :
37 : : #include <pulsecore/core.h>
38 : : #include <pulsecore/idxset.h>
39 : : #include <pulsecore/memchunk.h>
40 : : #include <pulsecore/source.h>
41 : : #include <pulsecore/module.h>
42 : : #include <pulsecore/asyncmsgq.h>
43 : : #include <pulsecore/msgobject.h>
44 : : #include <pulsecore/rtpoll.h>
45 : : #include <pulsecore/device-port.h>
46 : : #include <pulsecore/card.h>
47 : : #include <pulsecore/queue.h>
48 : : #include <pulsecore/thread-mq.h>
49 : : #include <pulsecore/sink-input.h>
50 : :
51 : : #define PA_MAX_INPUTS_PER_SINK 32
52 : :
53 : : /* Returns true if sink is linked: registered and accessible from client side. */
54 : : static inline pa_bool_t PA_SINK_IS_LINKED(pa_sink_state_t x) {
55 : 0 : return x == PA_SINK_RUNNING || x == PA_SINK_IDLE || x == PA_SINK_SUSPENDED;
56 : : }
57 : :
58 : : /* A generic definition for void callback functions */
59 : : typedef void(*pa_sink_cb_t)(pa_sink *s);
60 : :
61 : : struct pa_sink {
62 : : pa_msgobject parent;
63 : :
64 : : uint32_t index;
65 : : pa_core *core;
66 : :
67 : : pa_sink_state_t state;
68 : : pa_sink_flags_t flags;
69 : : pa_suspend_cause_t suspend_cause;
70 : :
71 : : char *name;
72 : : char *driver; /* may be NULL */
73 : : pa_proplist *proplist;
74 : :
75 : : pa_module *module; /* may be NULL */
76 : : pa_card *card; /* may be NULL */
77 : :
78 : : pa_sample_spec sample_spec;
79 : : pa_channel_map channel_map;
80 : : uint32_t default_sample_rate;
81 : : uint32_t alternate_sample_rate;
82 : :
83 : : pa_idxset *inputs;
84 : : unsigned n_corked;
85 : : pa_source *monitor_source;
86 : : pa_sink_input *input_to_master; /* non-NULL only for filter sinks */
87 : :
88 : : pa_volume_t base_volume; /* shall be constant */
89 : : unsigned n_volume_steps; /* shall be constant */
90 : :
91 : : /* Also see http://pulseaudio.org/wiki/InternalVolumes */
92 : : pa_cvolume reference_volume; /* The volume exported and taken as reference base for relative sink input volumes */
93 : : pa_cvolume real_volume; /* The volume that the hardware is configured to */
94 : : pa_cvolume soft_volume; /* The internal software volume we apply to all PCM data while it passes through */
95 : :
96 : : pa_bool_t muted:1;
97 : :
98 : : pa_bool_t refresh_volume:1;
99 : : pa_bool_t refresh_muted:1;
100 : : pa_bool_t save_port:1;
101 : : pa_bool_t save_volume:1;
102 : : pa_bool_t save_muted:1;
103 : :
104 : : /* Saved volume state while we're in passthrough mode */
105 : : pa_cvolume saved_volume;
106 : : pa_bool_t saved_save_volume:1;
107 : :
108 : : pa_asyncmsgq *asyncmsgq;
109 : :
110 : : pa_memchunk silence;
111 : :
112 : : pa_hashmap *ports;
113 : : pa_device_port *active_port;
114 : : pa_atomic_t mixer_dirty;
115 : :
116 : : /* The latency offset is inherited from the currently active port */
117 : : int64_t latency_offset;
118 : :
119 : : unsigned priority;
120 : :
121 : : /* Called when the main loop requests a state change. Called from
122 : : * main loop context. If returns -1 the state change will be
123 : : * inhibited */
124 : : int (*set_state)(pa_sink *s, pa_sink_state_t state); /* may be NULL */
125 : :
126 : : /* Sink drivers that support hardware volume may set this
127 : : * callback. This is called when the current volume needs to be
128 : : * re-read from the hardware.
129 : : *
130 : : * There are two ways for drivers to implement hardware volume
131 : : * query: either set this callback or handle
132 : : * PA_SINK_MESSAGE_GET_VOLUME. The callback implementation or the
133 : : * message handler must update s->real_volume and s->soft_volume
134 : : * (using pa_sink_set_soft_volume()) to match the current hardware
135 : : * volume.
136 : : *
137 : : * If PA_SINK_DEFERRED_VOLUME is not set, then this is called from the
138 : : * main thread before sending PA_SINK_MESSAGE_GET_VOLUME, so in
139 : : * this case the driver can choose whether to read the volume from
140 : : * the hardware in the main thread or in the IO thread.
141 : : *
142 : : * If PA_SINK_DEFERRED_VOLUME is set, then this is called from the IO
143 : : * thread within the default handler for
144 : : * PA_SINK_MESSAGE_GET_VOLUME (the main thread is waiting while
145 : : * the message is being processed), so there's no choice of where
146 : : * to do the volume reading - it has to be done in the IO thread
147 : : * always.
148 : : *
149 : : * You must use the function pa_sink_set_get_volume_callback() to
150 : : * set this callback. */
151 : : pa_sink_cb_t get_volume; /* may be NULL */
152 : :
153 : : /* Sink drivers that support hardware volume must set this
154 : : * callback. This is called when the hardware volume needs to be
155 : : * updated.
156 : : *
157 : : * If PA_SINK_DEFERRED_VOLUME is not set, then this is called from the
158 : : * main thread. The callback implementation must set the hardware
159 : : * volume according to s->real_volume. If the driver can't set the
160 : : * hardware volume to the exact requested value, it has to update
161 : : * s->real_volume and/or s->soft_volume so that they together
162 : : * match the actual hardware volume that was set.
163 : : *
164 : : * If PA_SINK_DEFERRED_VOLUME is set, then this is called from the IO
165 : : * thread. The callback implementation must not actually set the
166 : : * hardware volume yet, but it must check how close to the
167 : : * requested volume the hardware volume can be set, and update
168 : : * s->real_volume and/or s->soft_volume so that they together
169 : : * match the actual hardware volume that will be set later in the
170 : : * write_volume callback.
171 : : *
172 : : * You must use the function pa_sink_set_set_volume_callback() to
173 : : * set this callback. */
174 : : pa_sink_cb_t set_volume; /* may be NULL */
175 : :
176 : : /* Sink drivers that set PA_SINK_DEFERRED_VOLUME must provide this
177 : : * callback. This callback is not used with sinks that do not set
178 : : * PA_SINK_DEFERRED_VOLUME. This is called from the IO thread when a
179 : : * pending hardware volume change has to be written to the
180 : : * hardware. The requested volume is passed to the callback
181 : : * implementation in s->thread_info.current_hw_volume.
182 : : *
183 : : * The call is done inside pa_sink_volume_change_apply(), which is
184 : : * not called automatically - it is the driver's responsibility to
185 : : * schedule that function to be called at the right times in the
186 : : * IO thread.
187 : : *
188 : : * You must use the function pa_sink_set_write_volume_callback() to
189 : : * set this callback. */
190 : : pa_sink_cb_t write_volume; /* may be NULL */
191 : :
192 : : /* Called when the mute setting is queried. A PA_SINK_MESSAGE_GET_MUTE
193 : : * message will also be sent. Called from IO thread if PA_SINK_DEFERRED_VOLUME
194 : : * flag is set otherwise from main loop context. If refresh_mute is FALSE
195 : : * neither this function is called nor a message is sent.
196 : : *
197 : : * You must use the function pa_sink_set_get_mute_callback() to
198 : : * set this callback. */
199 : : pa_sink_cb_t get_mute; /* may be NULL */
200 : :
201 : : /* Called when the mute setting shall be changed. A PA_SINK_MESSAGE_SET_MUTE
202 : : * message will also be sent. Called from IO thread if PA_SINK_DEFERRED_VOLUME
203 : : * flag is set otherwise from main loop context.
204 : : *
205 : : * You must use the function pa_sink_set_set_mute_callback() to
206 : : * set this callback. */
207 : : pa_sink_cb_t set_mute; /* may be NULL */
208 : :
209 : : /* Called when a rewind request is issued. Called from IO thread
210 : : * context. */
211 : : pa_sink_cb_t request_rewind; /* may be NULL */
212 : :
213 : : /* Called when a the requested latency is changed. Called from IO
214 : : * thread context. */
215 : : pa_sink_cb_t update_requested_latency; /* may be NULL */
216 : :
217 : : /* Called whenever the port shall be changed. Called from IO
218 : : * thread if deferred volumes are enabled, and main thread otherwise. */
219 : : int (*set_port)(pa_sink *s, pa_device_port *port); /* may be NULL */
220 : :
221 : : /* Called to get the list of formats supported by the sink, sorted
222 : : * in descending order of preference. */
223 : : pa_idxset* (*get_formats)(pa_sink *s); /* may be NULL */
224 : :
225 : : /* Called to set the list of formats supported by the sink. Can be
226 : : * NULL if the sink does not support this. Returns TRUE on success,
227 : : * FALSE otherwise (for example when an unsupportable format is
228 : : * set). Makes a copy of the formats passed in. */
229 : : pa_bool_t (*set_formats)(pa_sink *s, pa_idxset *formats); /* may be NULL */
230 : :
231 : : /* Called whenever the sampling frequency shall be changed. Called from
232 : : * main thread. */
233 : : pa_bool_t (*update_rate)(pa_sink *s, uint32_t rate);
234 : :
235 : : /* Contains copies of the above data so that the real-time worker
236 : : * thread can work without access locking */
237 : : struct {
238 : : pa_sink_state_t state;
239 : : pa_hashmap *inputs;
240 : :
241 : : pa_rtpoll *rtpoll;
242 : :
243 : : pa_cvolume soft_volume;
244 : : pa_bool_t soft_muted:1;
245 : :
246 : : /* The requested latency is used for dynamic latency
247 : : * sinks. For fixed latency sinks it is always identical to
248 : : * the fixed_latency. See below. */
249 : : pa_bool_t requested_latency_valid:1;
250 : : pa_usec_t requested_latency;
251 : :
252 : : /* The number of bytes streams need to keep around as history to
253 : : * be able to satisfy every DMA buffer rewrite */
254 : : size_t max_rewind;
255 : :
256 : : /* The number of bytes streams need to keep around to satisfy
257 : : * every DMA write request */
258 : : size_t max_request;
259 : :
260 : : /* Maximum of what clients requested to rewind in this cycle */
261 : : size_t rewind_nbytes;
262 : : pa_bool_t rewind_requested;
263 : :
264 : : /* Both dynamic and fixed latencies will be clamped to this
265 : : * range. */
266 : : pa_usec_t min_latency; /* we won't go below this latency */
267 : : pa_usec_t max_latency; /* An upper limit for the latencies */
268 : :
269 : : /* 'Fixed' simply means that the latency is exclusively
270 : : * decided on by the sink, and the clients have no influence
271 : : * in changing it */
272 : : pa_usec_t fixed_latency; /* for sinks with PA_SINK_DYNAMIC_LATENCY this is 0 */
273 : :
274 : : /* This latency offset is a direct copy from s->latency_offset */
275 : : int64_t latency_offset;
276 : :
277 : : /* Delayed volume change events are queued here. The events
278 : : * are stored in expiration order. The one expiring next is in
279 : : * the head of the list. */
280 : : PA_LLIST_HEAD(pa_sink_volume_change, volume_changes);
281 : : pa_sink_volume_change *volume_changes_tail;
282 : : /* This value is updated in pa_sink_volume_change_apply() and
283 : : * used only by sinks with PA_SINK_DEFERRED_VOLUME. */
284 : : pa_cvolume current_hw_volume;
285 : :
286 : : /* The amount of usec volume up events are delayed and volume
287 : : * down events are made earlier. */
288 : : uint32_t volume_change_safety_margin;
289 : : /* Usec delay added to all volume change events, may be negative. */
290 : : int32_t volume_change_extra_delay;
291 : : } thread_info;
292 : :
293 : : void *userdata;
294 : : };
295 : :
296 [ # # ][ # # ]: 0 : PA_DECLARE_PUBLIC_CLASS(pa_sink);
[ # # ][ # # ]
[ # # ]
297 : : #define PA_SINK(s) (pa_sink_cast(s))
298 : :
299 : : typedef enum pa_sink_message {
300 : : PA_SINK_MESSAGE_ADD_INPUT,
301 : : PA_SINK_MESSAGE_REMOVE_INPUT,
302 : : PA_SINK_MESSAGE_GET_VOLUME,
303 : : PA_SINK_MESSAGE_SET_SHARED_VOLUME,
304 : : PA_SINK_MESSAGE_SET_VOLUME_SYNCED,
305 : : PA_SINK_MESSAGE_SET_VOLUME,
306 : : PA_SINK_MESSAGE_SYNC_VOLUMES,
307 : : PA_SINK_MESSAGE_GET_MUTE,
308 : : PA_SINK_MESSAGE_SET_MUTE,
309 : : PA_SINK_MESSAGE_GET_LATENCY,
310 : : PA_SINK_MESSAGE_GET_REQUESTED_LATENCY,
311 : : PA_SINK_MESSAGE_SET_STATE,
312 : : PA_SINK_MESSAGE_START_MOVE,
313 : : PA_SINK_MESSAGE_FINISH_MOVE,
314 : : PA_SINK_MESSAGE_ATTACH,
315 : : PA_SINK_MESSAGE_DETACH,
316 : : PA_SINK_MESSAGE_SET_LATENCY_RANGE,
317 : : PA_SINK_MESSAGE_GET_LATENCY_RANGE,
318 : : PA_SINK_MESSAGE_SET_FIXED_LATENCY,
319 : : PA_SINK_MESSAGE_GET_FIXED_LATENCY,
320 : : PA_SINK_MESSAGE_GET_MAX_REWIND,
321 : : PA_SINK_MESSAGE_GET_MAX_REQUEST,
322 : : PA_SINK_MESSAGE_SET_MAX_REWIND,
323 : : PA_SINK_MESSAGE_SET_MAX_REQUEST,
324 : : PA_SINK_MESSAGE_SET_PORT,
325 : : PA_SINK_MESSAGE_UPDATE_VOLUME_AND_MUTE,
326 : : PA_SINK_MESSAGE_SET_LATENCY_OFFSET,
327 : : PA_SINK_MESSAGE_MAX
328 : : } pa_sink_message_t;
329 : :
330 : : typedef struct pa_sink_new_data {
331 : : char *name;
332 : : pa_proplist *proplist;
333 : :
334 : : const char *driver;
335 : : pa_module *module;
336 : : pa_card *card;
337 : :
338 : : pa_hashmap *ports;
339 : : char *active_port;
340 : :
341 : : pa_sample_spec sample_spec;
342 : : pa_channel_map channel_map;
343 : : uint32_t alternate_sample_rate;
344 : : pa_cvolume volume;
345 : : pa_bool_t muted :1;
346 : :
347 : : pa_bool_t sample_spec_is_set:1;
348 : : pa_bool_t channel_map_is_set:1;
349 : : pa_bool_t alternate_sample_rate_is_set:1;
350 : : pa_bool_t volume_is_set:1;
351 : : pa_bool_t muted_is_set:1;
352 : :
353 : : pa_bool_t namereg_fail:1;
354 : :
355 : : pa_bool_t save_port:1;
356 : : pa_bool_t save_volume:1;
357 : : pa_bool_t save_muted:1;
358 : : } pa_sink_new_data;
359 : :
360 : : pa_sink_new_data* pa_sink_new_data_init(pa_sink_new_data *data);
361 : : void pa_sink_new_data_set_name(pa_sink_new_data *data, const char *name);
362 : : void pa_sink_new_data_set_sample_spec(pa_sink_new_data *data, const pa_sample_spec *spec);
363 : : void pa_sink_new_data_set_channel_map(pa_sink_new_data *data, const pa_channel_map *map);
364 : : void pa_sink_new_data_set_alternate_sample_rate(pa_sink_new_data *data, const uint32_t alternate_sample_rate);
365 : : void pa_sink_new_data_set_volume(pa_sink_new_data *data, const pa_cvolume *volume);
366 : : void pa_sink_new_data_set_muted(pa_sink_new_data *data, pa_bool_t mute);
367 : : void pa_sink_new_data_set_port(pa_sink_new_data *data, const char *port);
368 : : void pa_sink_new_data_done(pa_sink_new_data *data);
369 : :
370 : : /*** To be called exclusively by the sink driver, from main context */
371 : :
372 : : pa_sink* pa_sink_new(
373 : : pa_core *core,
374 : : pa_sink_new_data *data,
375 : : pa_sink_flags_t flags);
376 : :
377 : : void pa_sink_set_get_volume_callback(pa_sink *s, pa_sink_cb_t cb);
378 : : void pa_sink_set_set_volume_callback(pa_sink *s, pa_sink_cb_t cb);
379 : : void pa_sink_set_write_volume_callback(pa_sink *s, pa_sink_cb_t cb);
380 : : void pa_sink_set_get_mute_callback(pa_sink *s, pa_sink_cb_t cb);
381 : : void pa_sink_set_set_mute_callback(pa_sink *s, pa_sink_cb_t cb);
382 : : void pa_sink_enable_decibel_volume(pa_sink *s, pa_bool_t enable);
383 : :
384 : : void pa_sink_put(pa_sink *s);
385 : : void pa_sink_unlink(pa_sink* s);
386 : :
387 : : void pa_sink_set_description(pa_sink *s, const char *description);
388 : : void pa_sink_set_asyncmsgq(pa_sink *s, pa_asyncmsgq *q);
389 : : void pa_sink_set_rtpoll(pa_sink *s, pa_rtpoll *p);
390 : :
391 : : void pa_sink_set_max_rewind(pa_sink *s, size_t max_rewind);
392 : : void pa_sink_set_max_request(pa_sink *s, size_t max_request);
393 : : void pa_sink_set_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
394 : : void pa_sink_set_fixed_latency(pa_sink *s, pa_usec_t latency);
395 : :
396 : : void pa_sink_detach(pa_sink *s);
397 : : void pa_sink_attach(pa_sink *s);
398 : :
399 : : void pa_sink_set_soft_volume(pa_sink *s, const pa_cvolume *volume);
400 : : void pa_sink_volume_changed(pa_sink *s, const pa_cvolume *new_volume);
401 : : void pa_sink_mute_changed(pa_sink *s, pa_bool_t new_muted);
402 : :
403 : : void pa_sink_update_flags(pa_sink *s, pa_sink_flags_t mask, pa_sink_flags_t value);
404 : :
405 : : pa_bool_t pa_device_init_description(pa_proplist *p);
406 : : pa_bool_t pa_device_init_icon(pa_proplist *p, pa_bool_t is_sink);
407 : : pa_bool_t pa_device_init_intended_roles(pa_proplist *p);
408 : : unsigned pa_device_init_priority(pa_proplist *p);
409 : :
410 : : /**** May be called by everyone, from main context */
411 : :
412 : : pa_bool_t pa_sink_update_rate(pa_sink *s, uint32_t rate, pa_bool_t passthrough);
413 : : void pa_sink_set_latency_offset(pa_sink *s, int64_t offset);
414 : :
415 : : /* The returned value is supposed to be in the time domain of the sound card! */
416 : : pa_usec_t pa_sink_get_latency(pa_sink *s);
417 : : pa_usec_t pa_sink_get_requested_latency(pa_sink *s);
418 : : void pa_sink_get_latency_range(pa_sink *s, pa_usec_t *min_latency, pa_usec_t *max_latency);
419 : : pa_usec_t pa_sink_get_fixed_latency(pa_sink *s);
420 : :
421 : : size_t pa_sink_get_max_rewind(pa_sink *s);
422 : : size_t pa_sink_get_max_request(pa_sink *s);
423 : :
424 : : int pa_sink_update_status(pa_sink*s);
425 : : int pa_sink_suspend(pa_sink *s, pa_bool_t suspend, pa_suspend_cause_t cause);
426 : : int pa_sink_suspend_all(pa_core *c, pa_bool_t suspend, pa_suspend_cause_t cause);
427 : :
428 : : /* Use this instead of checking s->flags & PA_SINK_FLAT_VOLUME directly. */
429 : : pa_bool_t pa_sink_flat_volume_enabled(pa_sink *s);
430 : :
431 : : /* Get the master sink when sharing volumes */
432 : : pa_sink *pa_sink_get_master(pa_sink *s);
433 : :
434 : : /* Is the sink in passthrough mode? (that is, is there a passthrough sink input
435 : : * connected to this sink? */
436 : : pa_bool_t pa_sink_is_passthrough(pa_sink *s);
437 : : /* These should be called when a sink enters/leaves passthrough mode */
438 : : void pa_sink_enter_passthrough(pa_sink *s);
439 : : void pa_sink_leave_passthrough(pa_sink *s);
440 : :
441 : : void pa_sink_set_volume(pa_sink *sink, const pa_cvolume *volume, pa_bool_t sendmsg, pa_bool_t save);
442 : : const pa_cvolume *pa_sink_get_volume(pa_sink *sink, pa_bool_t force_refresh);
443 : :
444 : : void pa_sink_set_mute(pa_sink *sink, pa_bool_t mute, pa_bool_t save);
445 : : pa_bool_t pa_sink_get_mute(pa_sink *sink, pa_bool_t force_refresh);
446 : :
447 : : pa_bool_t pa_sink_update_proplist(pa_sink *s, pa_update_mode_t mode, pa_proplist *p);
448 : :
449 : : int pa_sink_set_port(pa_sink *s, const char *name, pa_bool_t save);
450 : : void pa_sink_set_mixer_dirty(pa_sink *s, pa_bool_t is_dirty);
451 : :
452 : : unsigned pa_sink_linked_by(pa_sink *s); /* Number of connected streams */
453 : : unsigned pa_sink_used_by(pa_sink *s); /* Number of connected streams which are not corked */
454 : : unsigned pa_sink_check_suspend(pa_sink *s); /* Returns how many streams are active that don't allow suspensions */
455 : : #define pa_sink_get_state(s) ((s)->state)
456 : :
457 : : /* Moves all inputs away, and stores them in pa_queue */
458 : : pa_queue *pa_sink_move_all_start(pa_sink *s, pa_queue *q);
459 : : void pa_sink_move_all_finish(pa_sink *s, pa_queue *q, pa_bool_t save);
460 : : void pa_sink_move_all_fail(pa_queue *q);
461 : :
462 : : pa_idxset* pa_sink_get_formats(pa_sink *s);
463 : : pa_bool_t pa_sink_set_formats(pa_sink *s, pa_idxset *formats);
464 : : pa_bool_t pa_sink_check_format(pa_sink *s, pa_format_info *f);
465 : : pa_idxset* pa_sink_check_formats(pa_sink *s, pa_idxset *in_formats);
466 : :
467 : : /*** To be called exclusively by the sink driver, from IO context */
468 : :
469 : : void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result);
470 : : void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result);
471 : : void pa_sink_render_into(pa_sink*s, pa_memchunk *target);
472 : : void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target);
473 : :
474 : : void pa_sink_process_rewind(pa_sink *s, size_t nbytes);
475 : :
476 : : int pa_sink_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
477 : :
478 : : void pa_sink_attach_within_thread(pa_sink *s);
479 : : void pa_sink_detach_within_thread(pa_sink *s);
480 : :
481 : : pa_usec_t pa_sink_get_requested_latency_within_thread(pa_sink *s);
482 : :
483 : : void pa_sink_set_max_rewind_within_thread(pa_sink *s, size_t max_rewind);
484 : : void pa_sink_set_max_request_within_thread(pa_sink *s, size_t max_request);
485 : :
486 : : void pa_sink_set_latency_range_within_thread(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
487 : : void pa_sink_set_fixed_latency_within_thread(pa_sink *s, pa_usec_t latency);
488 : :
489 : : void pa_sink_update_volume_and_mute(pa_sink *s);
490 : :
491 : : pa_bool_t pa_sink_volume_change_apply(pa_sink *s, pa_usec_t *usec_to_next);
492 : :
493 : : /*** To be called exclusively by sink input drivers, from IO context */
494 : :
495 : : void pa_sink_request_rewind(pa_sink*s, size_t nbytes);
496 : :
497 : : void pa_sink_invalidate_requested_latency(pa_sink *s, pa_bool_t dynamic);
498 : :
499 : : pa_usec_t pa_sink_get_latency_within_thread(pa_sink *s);
500 : :
501 : : /* Verify that we called in IO context (aka 'thread context), or that
502 : : * the sink is not yet set up, i.e. the thread not set up yet. See
503 : : * pa_assert_io_context() in thread-mq.h for more information. */
504 : : #define pa_sink_assert_io_context(s) \
505 : : pa_assert(pa_thread_mq_get() || !PA_SINK_IS_LINKED((s)->state))
506 : :
507 : : #endif
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