code.delx.au - pulseaudio/blob - src/pulsecore/sink.h

   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_device_port pa_device_port;
  28 typedef struct pa_sink_volume_change pa_sink_volume_change;
  29
  30 #include <inttypes.h>
  31
  32 #include <pulse/def.h>
  33 #include <pulse/format.h>
  34 #include <pulse/sample.h>
  35 #include <pulse/channelmap.h>
  36 #include <pulse/volume.h>
  37
  38 #include <pulsecore/core.h>
  39 #include <pulsecore/idxset.h>
  40 #include <pulsecore/memchunk.h>
  41 #include <pulsecore/source.h>
  42 #include <pulsecore/module.h>
  43 #include <pulsecore/asyncmsgq.h>
  44 #include <pulsecore/msgobject.h>
  45 #include <pulsecore/rtpoll.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     return x == PA_SINK_RUNNING || x == PA_SINK_IDLE || x == PA_SINK_SUSPENDED;
  56 }
  57
  58 struct pa_device_port {
  59     char *name;
  60     char *description;
  61
  62     unsigned priority;
  63
  64     /* .. followed by some implementation specific data */
  65 };
  66
  67 #define PA_DEVICE_PORT_DATA(d) ((void*) ((uint8_t*) d + PA_ALIGN(sizeof(pa_device_port))))
  68
  69 /* A generic definition for void callback functions */
  70 typedef void(*pa_sink_cb_t)(pa_sink *s);
  71
  72 struct pa_sink {
  73     pa_msgobject parent;
  74
  75     uint32_t index;
  76     pa_core *core;
  77
  78     pa_sink_state_t state;
  79     pa_sink_flags_t flags;
  80     pa_suspend_cause_t suspend_cause;
  81
  82     char *name;
  83     char *driver;                           /* may be NULL */
  84     pa_proplist *proplist;
  85
  86     pa_module *module;                      /* may be NULL */
  87     pa_card *card;                          /* may be NULL */
  88
  89     pa_sample_spec sample_spec;
  90     pa_channel_map channel_map;
  91     uint32_t default_sample_rate;
  92     uint32_t alternate_sample_rate;
  93
  94     pa_idxset *inputs;
  95     unsigned n_corked;
  96     pa_source *monitor_source;
  97     pa_sink_input *input_to_master;         /* non-NULL only for filter sinks */
  98
  99     pa_volume_t base_volume; /* shall be constant */
 100     unsigned n_volume_steps; /* shall be constant */
 101
 102     /* Also see http://pulseaudio.org/wiki/InternalVolumes */
 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 */
 106
 107     pa_bool_t muted:1;
 108
 109     pa_bool_t refresh_volume:1;
 110     pa_bool_t refresh_muted:1;
 111     pa_bool_t save_port:1;
 112     pa_bool_t save_volume:1;
 113     pa_bool_t save_muted:1;
 114
 115     /* Saved volume state while we're in passthrough mode */
 116     pa_cvolume saved_volume;
 117     pa_bool_t saved_save_volume:1;
 118
 119     pa_asyncmsgq *asyncmsgq;
 120
 121     pa_memchunk silence;
 122
 123     pa_hashmap *ports;
 124     pa_device_port *active_port;
 125
 126     unsigned priority;
 127
 128     /* Called when the main loop requests a state change. Called from
 129      * main loop context. If returns -1 the state change will be
 130      * inhibited */
 131     int (*set_state)(pa_sink *s, pa_sink_state_t state); /* may be NULL */
 132
 133     /* Sink drivers that support hardware volume may set this
 134      * callback. This is called when the current volume needs to be
 135      * re-read from the hardware.
 136      *
 137      * There are two ways for drivers to implement hardware volume
 138      * query: either set this callback or handle
 139      * PA_SINK_MESSAGE_GET_VOLUME. The callback implementation or the
 140      * message handler must update s->real_volume and s->soft_volume
 141      * (using pa_sink_set_soft_volume()) to match the current hardware
 142      * volume.
 143      *
 144      * If PA_SINK_DEFERRED_VOLUME is not set, then this is called from the
 145      * main thread before sending PA_SINK_MESSAGE_GET_VOLUME, so in
 146      * this case the driver can choose whether to read the volume from
 147      * the hardware in the main thread or in the IO thread.
 148      *
 149      * If PA_SINK_DEFERRED_VOLUME is set, then this is called from the IO
 150      * thread within the default handler for
 151      * PA_SINK_MESSAGE_GET_VOLUME (the main thread is waiting while
 152      * the message is being processed), so there's no choice of where
 153      * to do the volume reading - it has to be done in the IO thread
 154      * always.
 155      *
 156      * You must use the function pa_sink_set_get_volume_callback() to
 157      * set this callback. */
 158     pa_sink_cb_t get_volume; /* may be NULL */
 159
 160     /* Sink drivers that support hardware volume must set this
 161      * callback. This is called when the hardware volume needs to be
 162      * updated.
 163      *
 164      * If PA_SINK_DEFERRED_VOLUME is not set, then this is called from the
 165      * main thread. The callback implementation must set the hardware
 166      * volume according to s->real_volume. If the driver can't set the
 167      * hardware volume to the exact requested value, it has to update
 168      * s->real_volume and/or s->soft_volume so that they together
 169      * match the actual hardware volume that was set.
 170      *
 171      * If PA_SINK_DEFERRED_VOLUME is set, then this is called from the IO
 172      * thread. The callback implementation must not actually set the
 173      * hardware volume yet, but it must check how close to the
 174      * requested volume the hardware volume can be set, and update
 175      * s->real_volume and/or s->soft_volume so that they together
 176      * match the actual hardware volume that will be set later in the
 177      * write_volume callback.
 178      *
 179      * You must use the function pa_sink_set_set_volume_callback() to
 180      * set this callback. */
 181     pa_sink_cb_t set_volume; /* may be NULL */
 182
 183     /* Sink drivers that set PA_SINK_DEFERRED_VOLUME must provide this
 184      * callback. This callback is not used with sinks that do not set
 185      * PA_SINK_DEFERRED_VOLUME. This is called from the IO thread when a
 186      * pending hardware volume change has to be written to the
 187      * hardware. The requested volume is passed to the callback
 188      * implementation in s->thread_info.current_hw_volume.
 189      *
 190      * The call is done inside pa_sink_volume_change_apply(), which is
 191      * not called automatically - it is the driver's responsibility to
 192      * schedule that function to be called at the right times in the
 193      * IO thread.
 194      *
 195      * You must use the function pa_sink_set_write_volume_callback() to
 196      * set this callback. */
 197     pa_sink_cb_t write_volume; /* may be NULL */
 198
 199     /* Called when the mute setting is queried. A PA_SINK_MESSAGE_GET_MUTE
 200      * message will also be sent. Called from IO thread if PA_SINK_DEFERRED_VOLUME
 201      * flag is set otherwise from main loop context. If refresh_mute is FALSE
 202      * neither this function is called nor a message is sent.
 203      *
 204      * You must use the function pa_sink_set_get_mute_callback() to
 205      * set this callback. */
 206     pa_sink_cb_t get_mute; /* may be NULL */
 207
 208     /* Called when the mute setting shall be changed. A PA_SINK_MESSAGE_SET_MUTE
 209      * message will also be sent. Called from IO thread if PA_SINK_DEFERRED_VOLUME
 210      * flag is set otherwise from main loop context.
 211      *
 212      * You must use the function pa_sink_set_set_mute_callback() to
 213      * set this callback. */
 214     pa_sink_cb_t set_mute; /* may be NULL */
 215
 216     /* Called when a rewind request is issued. Called from IO thread
 217      * context. */
 218     pa_sink_cb_t request_rewind; /* may be NULL */
 219
 220     /* Called when a the requested latency is changed. Called from IO
 221      * thread context. */
 222     pa_sink_cb_t update_requested_latency; /* may be NULL */
 223
 224     /* Called whenever the port shall be changed. Called from main
 225      * thread. */
 226     int (*set_port)(pa_sink *s, pa_device_port *port); /* may be NULL */
 227
 228     /* Called to get the list of formats supported by the sink, sorted
 229      * in descending order of preference. */
 230     pa_idxset* (*get_formats)(pa_sink *s); /* may be NULL */
 231
 232     /* Called to set the list of formats supported by the sink. Can be
 233      * NULL if the sink does not support this. Returns TRUE on success,
 234      * FALSE otherwise (for example when an unsupportable format is
 235      * set). Makes a copy of the formats passed in. */
 236     pa_bool_t (*set_formats)(pa_sink *s, pa_idxset *formats); /* may be NULL */
 237
 238     /* Called whenever the sampling frequency shall be changed. Called from
 239      * main thread. */
 240     pa_bool_t (*update_rate)(pa_sink *s, uint32_t rate);
 241
 242     /* Contains copies of the above data so that the real-time worker
 243      * thread can work without access locking */
 244     struct {
 245         pa_sink_state_t state;
 246         pa_hashmap *inputs;
 247
 248         pa_rtpoll *rtpoll;
 249
 250         pa_cvolume soft_volume;
 251         pa_bool_t soft_muted:1;
 252
 253         /* The requested latency is used for dynamic latency
 254          * sinks. For fixed latency sinks it is always identical to
 255          * the fixed_latency. See below. */
 256         pa_bool_t requested_latency_valid:1;
 257         pa_usec_t requested_latency;
 258
 259         /* The number of bytes streams need to keep around as history to
 260          * be able to satisfy every DMA buffer rewrite */
 261         size_t max_rewind;
 262
 263         /* The number of bytes streams need to keep around to satisfy
 264          * every DMA write request */
 265         size_t max_request;
 266
 267         /* Maximum of what clients requested to rewind in this cycle */
 268         size_t rewind_nbytes;
 269         pa_bool_t rewind_requested;
 270
 271         /* Both dynamic and fixed latencies will be clamped to this
 272          * range. */
 273         pa_usec_t min_latency; /* we won't go below this latency */
 274         pa_usec_t max_latency; /* An upper limit for the latencies */
 275
 276         /* 'Fixed' simply means that the latency is exclusively
 277          * decided on by the sink, and the clients have no influence
 278          * in changing it */
 279         pa_usec_t fixed_latency; /* for sinks with PA_SINK_DYNAMIC_LATENCY this is 0 */
 280
 281         /* Delayed volume change events are queued here. The events
 282          * are stored in expiration order. The one expiring next is in
 283          * the head of the list. */
 284         PA_LLIST_HEAD(pa_sink_volume_change, volume_changes);
 285         pa_sink_volume_change *volume_changes_tail;
 286         /* This value is updated in pa_sink_volume_change_apply() and
 287          * used only by sinks with PA_SINK_DEFERRED_VOLUME. */
 288         pa_cvolume current_hw_volume;
 289
 290         /* The amount of usec volume up events are delayed and volume
 291          * down events are made earlier. */
 292         uint32_t volume_change_safety_margin;
 293         /* Usec delay added to all volume change events, may be negative. */
 294         int32_t volume_change_extra_delay;
 295     } thread_info;
 296
 297     void *userdata;
 298 };
 299
 300 PA_DECLARE_PUBLIC_CLASS(pa_sink);
 301 #define PA_SINK(s) (pa_sink_cast(s))
 302
 303 typedef enum pa_sink_message {
 304     PA_SINK_MESSAGE_ADD_INPUT,
 305     PA_SINK_MESSAGE_REMOVE_INPUT,
 306     PA_SINK_MESSAGE_GET_VOLUME,
 307     PA_SINK_MESSAGE_SET_SHARED_VOLUME,
 308     PA_SINK_MESSAGE_SET_VOLUME_SYNCED,
 309     PA_SINK_MESSAGE_SET_VOLUME,
 310     PA_SINK_MESSAGE_SYNC_VOLUMES,
 311     PA_SINK_MESSAGE_GET_MUTE,
 312     PA_SINK_MESSAGE_SET_MUTE,
 313     PA_SINK_MESSAGE_GET_LATENCY,
 314     PA_SINK_MESSAGE_GET_REQUESTED_LATENCY,
 315     PA_SINK_MESSAGE_SET_STATE,
 316     PA_SINK_MESSAGE_START_MOVE,
 317     PA_SINK_MESSAGE_FINISH_MOVE,
 318     PA_SINK_MESSAGE_ATTACH,
 319     PA_SINK_MESSAGE_DETACH,
 320     PA_SINK_MESSAGE_SET_LATENCY_RANGE,
 321     PA_SINK_MESSAGE_GET_LATENCY_RANGE,
 322     PA_SINK_MESSAGE_SET_FIXED_LATENCY,
 323     PA_SINK_MESSAGE_GET_FIXED_LATENCY,
 324     PA_SINK_MESSAGE_GET_MAX_REWIND,
 325     PA_SINK_MESSAGE_GET_MAX_REQUEST,
 326     PA_SINK_MESSAGE_SET_MAX_REWIND,
 327     PA_SINK_MESSAGE_SET_MAX_REQUEST,
 328     PA_SINK_MESSAGE_SET_PORT,
 329     PA_SINK_MESSAGE_UPDATE_VOLUME_AND_MUTE,
 330     PA_SINK_MESSAGE_MAX
 331 } pa_sink_message_t;
 332
 333 typedef struct pa_sink_new_data {
 334     char *name;
 335     pa_proplist *proplist;
 336
 337     const char *driver;
 338     pa_module *module;
 339     pa_card *card;
 340
 341     pa_hashmap *ports;
 342     char *active_port;
 343
 344     pa_sample_spec sample_spec;
 345     pa_channel_map channel_map;
 346     uint32_t alternate_sample_rate;
 347     pa_cvolume volume;
 348     pa_bool_t muted :1;
 349
 350     pa_bool_t sample_spec_is_set:1;
 351     pa_bool_t channel_map_is_set:1;
 352     pa_bool_t alternate_sample_rate_is_set:1;
 353     pa_bool_t volume_is_set:1;
 354     pa_bool_t muted_is_set:1;
 355
 356     pa_bool_t namereg_fail:1;
 357
 358     pa_bool_t save_port:1;
 359     pa_bool_t save_volume:1;
 360     pa_bool_t save_muted:1;
 361 } pa_sink_new_data;
 362
 363 pa_sink_new_data* pa_sink_new_data_init(pa_sink_new_data *data);
 364 void pa_sink_new_data_set_name(pa_sink_new_data *data, const char *name);
 365 void pa_sink_new_data_set_sample_spec(pa_sink_new_data *data, const pa_sample_spec *spec);
 366 void pa_sink_new_data_set_channel_map(pa_sink_new_data *data, const pa_channel_map *map);
 367 void pa_sink_new_data_set_alternate_sample_rate(pa_sink_new_data *data, const uint32_t alternate_sample_rate);
 368 void pa_sink_new_data_set_volume(pa_sink_new_data *data, const pa_cvolume *volume);
 369 void pa_sink_new_data_set_muted(pa_sink_new_data *data, pa_bool_t mute);
 370 void pa_sink_new_data_set_port(pa_sink_new_data *data, const char *port);
 371 void pa_sink_new_data_done(pa_sink_new_data *data);
 372
 373 /*** To be called exclusively by the sink driver, from main context */
 374
 375 pa_sink* pa_sink_new(
 376         pa_core *core,
 377         pa_sink_new_data *data,
 378         pa_sink_flags_t flags);
 379
 380 void pa_sink_set_get_volume_callback(pa_sink *s, pa_sink_cb_t cb);
 381 void pa_sink_set_set_volume_callback(pa_sink *s, pa_sink_cb_t cb);
 382 void pa_sink_set_write_volume_callback(pa_sink *s, pa_sink_cb_t cb);
 383 void pa_sink_set_get_mute_callback(pa_sink *s, pa_sink_cb_t cb);
 384 void pa_sink_set_set_mute_callback(pa_sink *s, pa_sink_cb_t cb);
 385 void pa_sink_enable_decibel_volume(pa_sink *s, pa_bool_t enable);
 386
 387 void pa_sink_put(pa_sink *s);
 388 void pa_sink_unlink(pa_sink* s);
 389
 390 void pa_sink_set_description(pa_sink *s, const char *description);
 391 void pa_sink_set_asyncmsgq(pa_sink *s, pa_asyncmsgq *q);
 392 void pa_sink_set_rtpoll(pa_sink *s, pa_rtpoll *p);
 393
 394 void pa_sink_set_max_rewind(pa_sink *s, size_t max_rewind);
 395 void pa_sink_set_max_request(pa_sink *s, size_t max_request);
 396 void pa_sink_set_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
 397 void pa_sink_set_fixed_latency(pa_sink *s, pa_usec_t latency);
 398
 399 void pa_sink_detach(pa_sink *s);
 400 void pa_sink_attach(pa_sink *s);
 401
 402 void pa_sink_set_soft_volume(pa_sink *s, const pa_cvolume *volume);
 403 void pa_sink_volume_changed(pa_sink *s, const pa_cvolume *new_volume);
 404 void pa_sink_mute_changed(pa_sink *s, pa_bool_t new_muted);
 405
 406 void pa_sink_update_flags(pa_sink *s, pa_sink_flags_t mask, pa_sink_flags_t value);
 407
 408 pa_bool_t pa_device_init_description(pa_proplist *p);
 409 pa_bool_t pa_device_init_icon(pa_proplist *p, pa_bool_t is_sink);
 410 pa_bool_t pa_device_init_intended_roles(pa_proplist *p);
 411 unsigned pa_device_init_priority(pa_proplist *p);
 412
 413 /**** May be called by everyone, from main context */
 414
 415 pa_bool_t pa_sink_update_rate(pa_sink *s, uint32_t rate, pa_bool_t passthrough);
 416
 417 /* The returned value is supposed to be in the time domain of the sound card! */
 418 pa_usec_t pa_sink_get_latency(pa_sink *s);
 419 pa_usec_t pa_sink_get_requested_latency(pa_sink *s);
 420 void pa_sink_get_latency_range(pa_sink *s, pa_usec_t *min_latency, pa_usec_t *max_latency);
 421 pa_usec_t pa_sink_get_fixed_latency(pa_sink *s);
 422
 423 size_t pa_sink_get_max_rewind(pa_sink *s);
 424 size_t pa_sink_get_max_request(pa_sink *s);
 425
 426 int pa_sink_update_status(pa_sink*s);
 427 int pa_sink_suspend(pa_sink *s, pa_bool_t suspend, pa_suspend_cause_t cause);
 428 int pa_sink_suspend_all(pa_core *c, pa_bool_t suspend, pa_suspend_cause_t cause);
 429
 430 /* Use this instead of checking s->flags & PA_SINK_FLAT_VOLUME directly. */
 431 pa_bool_t pa_sink_flat_volume_enabled(pa_sink *s);
 432
 433 /* Get the master sink when sharing volumes */
 434 pa_sink *pa_sink_get_master(pa_sink *s);
 435
 436 /* Is the sink in passthrough mode? (that is, is there a passthrough sink input
 437  * connected to this sink? */
 438 pa_bool_t pa_sink_is_passthrough(pa_sink *s);
 439 /* These should be called when a sink enters/leaves passthrough mode */
 440 void pa_sink_enter_passthrough(pa_sink *s);
 441 void pa_sink_leave_passthrough(pa_sink *s);
 442
 443 void pa_sink_set_volume(pa_sink *sink, const pa_cvolume *volume, pa_bool_t sendmsg, pa_bool_t save);
 444 const pa_cvolume *pa_sink_get_volume(pa_sink *sink, pa_bool_t force_refresh);
 445
 446 void pa_sink_set_mute(pa_sink *sink, pa_bool_t mute, pa_bool_t save);
 447 pa_bool_t pa_sink_get_mute(pa_sink *sink, pa_bool_t force_refresh);
 448
 449 pa_bool_t pa_sink_update_proplist(pa_sink *s, pa_update_mode_t mode, pa_proplist *p);
 450
 451 int pa_sink_set_port(pa_sink *s, const char *name, pa_bool_t save);
 452
 453 unsigned pa_sink_linked_by(pa_sink *s); /* Number of connected streams */
 454 unsigned pa_sink_used_by(pa_sink *s); /* Number of connected streams which are not corked */
 455 unsigned pa_sink_check_suspend(pa_sink *s); /* Returns how many streams are active that don't allow suspensions */
 456 #define pa_sink_get_state(s) ((s)->state)
 457
 458 /* Moves all inputs away, and stores them in pa_queue */
 459 pa_queue *pa_sink_move_all_start(pa_sink *s, pa_queue *q);
 460 void pa_sink_move_all_finish(pa_sink *s, pa_queue *q, pa_bool_t save);
 461 void pa_sink_move_all_fail(pa_queue *q);
 462
 463 pa_idxset* pa_sink_get_formats(pa_sink *s);
 464 pa_bool_t pa_sink_set_formats(pa_sink *s, pa_idxset *formats);
 465 pa_bool_t pa_sink_check_format(pa_sink *s, pa_format_info *f);
 466 pa_idxset* pa_sink_check_formats(pa_sink *s, pa_idxset *in_formats);
 467
 468 /*** To be called exclusively by the sink driver, from IO context */
 469
 470 void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result);
 471 void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result);
 472 void pa_sink_render_into(pa_sink*s, pa_memchunk *target);
 473 void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target);
 474
 475 void pa_sink_process_rewind(pa_sink *s, size_t nbytes);
 476
 477 int pa_sink_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
 478
 479 void pa_sink_attach_within_thread(pa_sink *s);
 480 void pa_sink_detach_within_thread(pa_sink *s);
 481
 482 pa_usec_t pa_sink_get_requested_latency_within_thread(pa_sink *s);
 483
 484 void pa_sink_set_max_rewind_within_thread(pa_sink *s, size_t max_rewind);
 485 void pa_sink_set_max_request_within_thread(pa_sink *s, size_t max_request);
 486
 487 void pa_sink_set_latency_range_within_thread(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
 488 void pa_sink_set_fixed_latency_within_thread(pa_sink *s, pa_usec_t latency);
 489
 490 void pa_sink_update_volume_and_mute(pa_sink *s);
 491
 492 pa_bool_t pa_sink_volume_change_apply(pa_sink *s, pa_usec_t *usec_to_next);
 493
 494 /*** To be called exclusively by sink input drivers, from IO context */
 495
 496 void pa_sink_request_rewind(pa_sink*s, size_t nbytes);
 497
 498 void pa_sink_invalidate_requested_latency(pa_sink *s, pa_bool_t dynamic);
 499
 500 pa_usec_t pa_sink_get_latency_within_thread(pa_sink *s);
 501
 502 pa_device_port *pa_device_port_new(const char *name, const char *description, size_t extra);
 503 void pa_device_port_free(pa_device_port *p);
 504
 505 /* Verify that we called in IO context (aka 'thread context), or that
 506  * the sink is not yet set up, i.e. the thread not set up yet. See
 507  * pa_assert_io_context() in thread-mq.h for more information. */
 508 #define pa_sink_assert_io_context(s) \
 509     pa_assert(pa_thread_mq_get() || !PA_SINK_IS_LINKED((s)->state))
 510
 511 #endif