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

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   6
   7   PulseAudio is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU Lesser General Public License as published
   9   by the Free Software Foundation; either version 2.1 of the License,
  10   or (at your option) any later version.
  11
  12   PulseAudio is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with PulseAudio; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  20   USA.
  21 ***/
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <stdio.h>
  30
  31 #include <pulse/introspect.h>
  32 #include <pulse/utf8.h>
  33 #include <pulse/xmalloc.h>
  34 #include <pulse/timeval.h>
  35 #include <pulse/util.h>
  36 #include <pulse/i18n.h>
  37
  38 #include <pulsecore/sink-input.h>
  39 #include <pulsecore/namereg.h>
  40 #include <pulsecore/core-util.h>
  41 #include <pulsecore/sample-util.h>
  42 #include <pulsecore/core-subscribe.h>
  43 #include <pulsecore/log.h>
  44 #include <pulsecore/macro.h>
  45 #include <pulsecore/play-memblockq.h>
  46
  47 #include "sink.h"
  48
  49 #define MAX_MIX_CHANNELS 32
  50 #define MIX_BUFFER_LENGTH (PA_PAGE_SIZE)
  51 #define ABSOLUTE_MIN_LATENCY (500)
  52 #define ABSOLUTE_MAX_LATENCY (10*PA_USEC_PER_SEC)
  53 #define DEFAULT_FIXED_LATENCY (250*PA_USEC_PER_MSEC)
  54
  55 PA_DEFINE_PUBLIC_CLASS(pa_sink, pa_msgobject);
  56
  57 static void sink_free(pa_object *s);
  58
  59 pa_sink_new_data* pa_sink_new_data_init(pa_sink_new_data *data) {
  60     pa_assert(data);
  61
  62     pa_zero(*data);
  63     data->proplist = pa_proplist_new();
  64
  65     return data;
  66 }
  67
  68 void pa_sink_new_data_set_name(pa_sink_new_data *data, const char *name) {
  69     pa_assert(data);
  70
  71     pa_xfree(data->name);
  72     data->name = pa_xstrdup(name);
  73 }
  74
  75 void pa_sink_new_data_set_sample_spec(pa_sink_new_data *data, const pa_sample_spec *spec) {
  76     pa_assert(data);
  77
  78     if ((data->sample_spec_is_set = !!spec))
  79         data->sample_spec = *spec;
  80 }
  81
  82 void pa_sink_new_data_set_channel_map(pa_sink_new_data *data, const pa_channel_map *map) {
  83     pa_assert(data);
  84
  85     if ((data->channel_map_is_set = !!map))
  86         data->channel_map = *map;
  87 }
  88
  89 void pa_sink_new_data_set_volume(pa_sink_new_data *data, const pa_cvolume *volume) {
  90     pa_assert(data);
  91
  92     if ((data->volume_is_set = !!volume))
  93         data->volume = *volume;
  94 }
  95
  96 void pa_sink_new_data_set_muted(pa_sink_new_data *data, pa_bool_t mute) {
  97     pa_assert(data);
  98
  99     data->muted_is_set = TRUE;
 100     data->muted = !!mute;
 101 }
 102
 103 void pa_sink_new_data_set_port(pa_sink_new_data *data, const char *port) {
 104     pa_assert(data);
 105
 106     pa_xfree(data->active_port);
 107     data->active_port = pa_xstrdup(port);
 108 }
 109
 110 void pa_sink_new_data_done(pa_sink_new_data *data) {
 111     pa_assert(data);
 112
 113     pa_proplist_free(data->proplist);
 114
 115     if (data->ports) {
 116         pa_device_port *p;
 117
 118         while ((p = pa_hashmap_steal_first(data->ports)))
 119             pa_device_port_free(p);
 120
 121         pa_hashmap_free(data->ports, NULL, NULL);
 122     }
 123
 124     pa_xfree(data->name);
 125     pa_xfree(data->active_port);
 126 }
 127
 128 pa_device_port *pa_device_port_new(const char *name, const char *description, size_t extra) {
 129     pa_device_port *p;
 130
 131     pa_assert(name);
 132
 133     p = pa_xmalloc(PA_ALIGN(sizeof(pa_device_port)) + extra);
 134     p->name = pa_xstrdup(name);
 135     p->description = pa_xstrdup(description);
 136
 137     p->priority = 0;
 138
 139     return p;
 140 }
 141
 142 void pa_device_port_free(pa_device_port *p) {
 143     pa_assert(p);
 144
 145     pa_xfree(p->name);
 146     pa_xfree(p->description);
 147     pa_xfree(p);
 148 }
 149
 150 /* Called from main context */
 151 static void reset_callbacks(pa_sink *s) {
 152     pa_assert(s);
 153
 154     s->set_state = NULL;
 155     s->get_volume = NULL;
 156     s->set_volume = NULL;
 157     s->get_mute = NULL;
 158     s->set_mute = NULL;
 159     s->request_rewind = NULL;
 160     s->update_requested_latency = NULL;
 161     s->set_port = NULL;
 162 }
 163
 164 /* Called from main context */
 165 pa_sink* pa_sink_new(
 166         pa_core *core,
 167         pa_sink_new_data *data,
 168         pa_sink_flags_t flags) {
 169
 170     pa_sink *s;
 171     const char *name;
 172     char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
 173     pa_source_new_data source_data;
 174     const char *dn;
 175     char *pt;
 176
 177     pa_assert(core);
 178     pa_assert(data);
 179     pa_assert(data->name);
 180     pa_assert_ctl_context();
 181
 182     s = pa_msgobject_new(pa_sink);
 183
 184     if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SINK, s, data->namereg_fail))) {
 185         pa_log_debug("Failed to register name %s.", data->name);
 186         pa_xfree(s);
 187         return NULL;
 188     }
 189
 190     pa_sink_new_data_set_name(data, name);
 191
 192     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_NEW], data) < 0) {
 193         pa_xfree(s);
 194         pa_namereg_unregister(core, name);
 195         return NULL;
 196     }
 197
 198     /* FIXME, need to free s here on failure */
 199
 200     pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
 201     pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
 202
 203     pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
 204
 205     if (!data->channel_map_is_set)
 206         pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
 207
 208     pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
 209     pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
 210
 211     if (!data->volume_is_set)
 212         pa_cvolume_reset(&data->volume, data->sample_spec.channels);
 213
 214     pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
 215     pa_return_null_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec));
 216
 217     if (!data->muted_is_set)
 218         data->muted = FALSE;
 219
 220     if (data->card)
 221         pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
 222
 223     pa_device_init_description(data->proplist);
 224     pa_device_init_icon(data->proplist, TRUE);
 225     pa_device_init_intended_roles(data->proplist);
 226
 227     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_FIXATE], data) < 0) {
 228         pa_xfree(s);
 229         pa_namereg_unregister(core, name);
 230         return NULL;
 231     }
 232
 233     s->parent.parent.free = sink_free;
 234     s->parent.process_msg = pa_sink_process_msg;
 235
 236     s->core = core;
 237     s->state = PA_SINK_INIT;
 238     s->flags = flags;
 239     s->priority = 0;
 240     s->suspend_cause = 0;
 241     s->name = pa_xstrdup(name);
 242     s->proplist = pa_proplist_copy(data->proplist);
 243     s->driver = pa_xstrdup(pa_path_get_filename(data->driver));
 244     s->module = data->module;
 245     s->card = data->card;
 246
 247     s->priority = pa_device_init_priority(s->proplist);
 248
 249     s->sample_spec = data->sample_spec;
 250     s->channel_map = data->channel_map;
 251
 252     s->inputs = pa_idxset_new(NULL, NULL);
 253     s->n_corked = 0;
 254
 255     s->reference_volume = s->real_volume = data->volume;
 256     pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
 257     s->base_volume = PA_VOLUME_NORM;
 258     s->n_volume_steps = PA_VOLUME_NORM+1;
 259     s->muted = data->muted;
 260     s->refresh_volume = s->refresh_muted = FALSE;
 261
 262     reset_callbacks(s);
 263     s->userdata = NULL;
 264
 265     s->asyncmsgq = NULL;
 266
 267     /* As a minor optimization we just steal the list instead of
 268      * copying it here */
 269     s->ports = data->ports;
 270     data->ports = NULL;
 271
 272     s->active_port = NULL;
 273     s->save_port = FALSE;
 274
 275     if (data->active_port && s->ports)
 276         if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
 277             s->save_port = data->save_port;
 278
 279     if (!s->active_port && s->ports) {
 280         void *state;
 281         pa_device_port *p;
 282
 283         PA_HASHMAP_FOREACH(p, s->ports, state)
 284             if (!s->active_port || p->priority > s->active_port->priority)
 285                 s->active_port = p;
 286     }
 287
 288     s->save_volume = data->save_volume;
 289     s->save_muted = data->save_muted;
 290
 291     pa_silence_memchunk_get(
 292             &core->silence_cache,
 293             core->mempool,
 294             &s->silence,
 295             &s->sample_spec,
 296             0);
 297
 298     s->thread_info.rtpoll = NULL;
 299     s->thread_info.inputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 300     s->thread_info.soft_volume =  s->soft_volume;
 301     s->thread_info.soft_muted = s->muted;
 302     s->thread_info.state = s->state;
 303     s->thread_info.rewind_nbytes = 0;
 304     s->thread_info.rewind_requested = FALSE;
 305     s->thread_info.max_rewind = 0;
 306     s->thread_info.max_request = 0;
 307     s->thread_info.requested_latency_valid = FALSE;
 308     s->thread_info.requested_latency = 0;
 309     s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
 310     s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
 311     s->thread_info.fixed_latency = flags & PA_SINK_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
 312
 313     /* FIXME: This should probably be moved to pa_sink_put() */
 314     pa_assert_se(pa_idxset_put(core->sinks, s, &s->index) >= 0);
 315
 316     if (s->card)
 317         pa_assert_se(pa_idxset_put(s->card->sinks, s, NULL) >= 0);
 318
 319     pt = pa_proplist_to_string_sep(s->proplist, "\n    ");
 320     pa_log_info("Created sink %u \"%s\" with sample spec %s and channel map %s\n    %s",
 321                 s->index,
 322                 s->name,
 323                 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
 324                 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
 325                 pt);
 326     pa_xfree(pt);
 327
 328     pa_source_new_data_init(&source_data);
 329     pa_source_new_data_set_sample_spec(&source_data, &s->sample_spec);
 330     pa_source_new_data_set_channel_map(&source_data, &s->channel_map);
 331     source_data.name = pa_sprintf_malloc("%s.monitor", name);
 332     source_data.driver = data->driver;
 333     source_data.module = data->module;
 334     source_data.card = data->card;
 335
 336     dn = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
 337     pa_proplist_setf(source_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Monitor of %s", dn ? dn : s->name);
 338     pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_CLASS, "monitor");
 339
 340     s->monitor_source = pa_source_new(core, &source_data,
 341                                       ((flags & PA_SINK_LATENCY) ? PA_SOURCE_LATENCY : 0) |
 342                                       ((flags & PA_SINK_DYNAMIC_LATENCY) ? PA_SOURCE_DYNAMIC_LATENCY : 0));
 343
 344     pa_source_new_data_done(&source_data);
 345
 346     if (!s->monitor_source) {
 347         pa_sink_unlink(s);
 348         pa_sink_unref(s);
 349         return NULL;
 350     }
 351
 352     s->monitor_source->monitor_of = s;
 353
 354     pa_source_set_latency_range(s->monitor_source, s->thread_info.min_latency, s->thread_info.max_latency);
 355     pa_source_set_fixed_latency(s->monitor_source, s->thread_info.fixed_latency);
 356     pa_source_set_max_rewind(s->monitor_source, s->thread_info.max_rewind);
 357
 358     return s;
 359 }
 360
 361 /* Called from main context */
 362 static int sink_set_state(pa_sink *s, pa_sink_state_t state) {
 363     int ret;
 364     pa_bool_t suspend_change;
 365     pa_sink_state_t original_state;
 366
 367     pa_assert(s);
 368     pa_assert_ctl_context();
 369
 370     if (s->state == state)
 371         return 0;
 372
 373     original_state = s->state;
 374
 375     suspend_change =
 376         (original_state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(state)) ||
 377         (PA_SINK_IS_OPENED(original_state) && state == PA_SINK_SUSPENDED);
 378
 379     if (s->set_state)
 380         if ((ret = s->set_state(s, state)) < 0)
 381             return ret;
 382
 383     if (s->asyncmsgq)
 384         if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
 385
 386             if (s->set_state)
 387                 s->set_state(s, original_state);
 388
 389             return ret;
 390         }
 391
 392     s->state = state;
 393
 394     if (state != PA_SINK_UNLINKED) { /* if we enter UNLINKED state pa_sink_unlink() will fire the apropriate events */
 395         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_STATE_CHANGED], s);
 396         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 397     }
 398
 399     if (suspend_change) {
 400         pa_sink_input *i;
 401         uint32_t idx;
 402
 403         /* We're suspending or resuming, tell everyone about it */
 404
 405         PA_IDXSET_FOREACH(i, s->inputs, idx)
 406             if (s->state == PA_SINK_SUSPENDED &&
 407                 (i->flags & PA_SINK_INPUT_KILL_ON_SUSPEND))
 408                 pa_sink_input_kill(i);
 409             else if (i->suspend)
 410                 i->suspend(i, state == PA_SINK_SUSPENDED);
 411
 412         if (s->monitor_source)
 413             pa_source_sync_suspend(s->monitor_source);
 414     }
 415
 416     return 0;
 417 }
 418
 419 /* Called from main context */
 420 void pa_sink_put(pa_sink* s) {
 421     pa_sink_assert_ref(s);
 422     pa_assert_ctl_context();
 423
 424     pa_assert(s->state == PA_SINK_INIT);
 425
 426     /* The following fields must be initialized properly when calling _put() */
 427     pa_assert(s->asyncmsgq);
 428     pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
 429
 430     /* Generally, flags should be initialized via pa_sink_new(). As a
 431      * special exception we allow volume related flags to be set
 432      * between _new() and _put(). */
 433
 434     if (!(s->flags & PA_SINK_HW_VOLUME_CTRL))
 435         s->flags |= PA_SINK_DECIBEL_VOLUME;
 436
 437     if ((s->flags & PA_SINK_DECIBEL_VOLUME) && s->core->flat_volumes)
 438         s->flags |= PA_SINK_FLAT_VOLUME;
 439
 440     /* We assume that if the sink implementor changed the default
 441      * volume he did so in real_volume, because that is the usual
 442      * place where he is supposed to place his changes.  */
 443     s->reference_volume = s->real_volume;
 444
 445     s->thread_info.soft_volume = s->soft_volume;
 446     s->thread_info.soft_muted = s->muted;
 447
 448     pa_assert((s->flags & PA_SINK_HW_VOLUME_CTRL) || (s->base_volume == PA_VOLUME_NORM && s->flags & PA_SINK_DECIBEL_VOLUME));
 449     pa_assert(!(s->flags & PA_SINK_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
 450     pa_assert(!(s->flags & PA_SINK_DYNAMIC_LATENCY) == (s->thread_info.fixed_latency != 0));
 451     pa_assert(!(s->flags & PA_SINK_LATENCY) == !(s->monitor_source->flags & PA_SOURCE_LATENCY));
 452     pa_assert(!(s->flags & PA_SINK_DYNAMIC_LATENCY) == !(s->monitor_source->flags & PA_SOURCE_DYNAMIC_LATENCY));
 453
 454     pa_assert(s->monitor_source->thread_info.fixed_latency == s->thread_info.fixed_latency);
 455     pa_assert(s->monitor_source->thread_info.min_latency == s->thread_info.min_latency);
 456     pa_assert(s->monitor_source->thread_info.max_latency == s->thread_info.max_latency);
 457
 458     pa_assert_se(sink_set_state(s, PA_SINK_IDLE) == 0);
 459
 460     pa_source_put(s->monitor_source);
 461
 462     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_NEW, s->index);
 463     pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PUT], s);
 464 }
 465
 466 /* Called from main context */
 467 void pa_sink_unlink(pa_sink* s) {
 468     pa_bool_t linked;
 469     pa_sink_input *i, *j = NULL;
 470
 471     pa_assert(s);
 472     pa_assert_ctl_context();
 473
 474     /* Please note that pa_sink_unlink() does more than simply
 475      * reversing pa_sink_put(). It also undoes the registrations
 476      * already done in pa_sink_new()! */
 477
 478     /* All operations here shall be idempotent, i.e. pa_sink_unlink()
 479      * may be called multiple times on the same sink without bad
 480      * effects. */
 481
 482     linked = PA_SINK_IS_LINKED(s->state);
 483
 484     if (linked)
 485         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_UNLINK], s);
 486
 487     if (s->state != PA_SINK_UNLINKED)
 488         pa_namereg_unregister(s->core, s->name);
 489     pa_idxset_remove_by_data(s->core->sinks, s, NULL);
 490
 491     if (s->card)
 492         pa_idxset_remove_by_data(s->card->sinks, s, NULL);
 493
 494     while ((i = pa_idxset_first(s->inputs, NULL))) {
 495         pa_assert(i != j);
 496         pa_sink_input_kill(i);
 497         j = i;
 498     }
 499
 500     if (linked)
 501         sink_set_state(s, PA_SINK_UNLINKED);
 502     else
 503         s->state = PA_SINK_UNLINKED;
 504
 505     reset_callbacks(s);
 506
 507     if (s->monitor_source)
 508         pa_source_unlink(s->monitor_source);
 509
 510     if (linked) {
 511         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
 512         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_UNLINK_POST], s);
 513     }
 514 }
 515
 516 /* Called from main context */
 517 static void sink_free(pa_object *o) {
 518     pa_sink *s = PA_SINK(o);
 519     pa_sink_input *i;
 520
 521     pa_assert(s);
 522     pa_assert_ctl_context();
 523     pa_assert(pa_sink_refcnt(s) == 0);
 524
 525     if (PA_SINK_IS_LINKED(s->state))
 526         pa_sink_unlink(s);
 527
 528     pa_log_info("Freeing sink %u \"%s\"", s->index, s->name);
 529
 530     if (s->monitor_source) {
 531         pa_source_unref(s->monitor_source);
 532         s->monitor_source = NULL;
 533     }
 534
 535     pa_idxset_free(s->inputs, NULL, NULL);
 536
 537     while ((i = pa_hashmap_steal_first(s->thread_info.inputs)))
 538         pa_sink_input_unref(i);
 539
 540     pa_hashmap_free(s->thread_info.inputs, NULL, NULL);
 541
 542     if (s->silence.memblock)
 543         pa_memblock_unref(s->silence.memblock);
 544
 545     pa_xfree(s->name);
 546     pa_xfree(s->driver);
 547
 548     if (s->proplist)
 549         pa_proplist_free(s->proplist);
 550
 551     if (s->ports) {
 552         pa_device_port *p;
 553
 554         while ((p = pa_hashmap_steal_first(s->ports)))
 555             pa_device_port_free(p);
 556
 557         pa_hashmap_free(s->ports, NULL, NULL);
 558     }
 559
 560     pa_xfree(s);
 561 }
 562
 563 /* Called from main context, and not while the IO thread is active, please */
 564 void pa_sink_set_asyncmsgq(pa_sink *s, pa_asyncmsgq *q) {
 565     pa_sink_assert_ref(s);
 566     pa_assert_ctl_context();
 567
 568     s->asyncmsgq = q;
 569
 570     if (s->monitor_source)
 571         pa_source_set_asyncmsgq(s->monitor_source, q);
 572 }
 573
 574 /* Called from main context, and not while the IO thread is active, please */
 575 void pa_sink_update_flags(pa_sink *s, pa_sink_flags_t mask, pa_sink_flags_t value) {
 576     pa_sink_assert_ref(s);
 577     pa_assert_ctl_context();
 578
 579     if (mask == 0)
 580         return;
 581
 582     /* For now, allow only a minimal set of flags to be changed. */
 583     pa_assert((mask & ~(PA_SINK_DYNAMIC_LATENCY|PA_SINK_LATENCY)) == 0);
 584
 585     s->flags = (s->flags & ~mask) | (value & mask);
 586
 587     pa_source_update_flags(s->monitor_source,
 588                            ((mask & PA_SINK_LATENCY) ? PA_SOURCE_LATENCY : 0) |
 589                            ((mask & PA_SINK_DYNAMIC_LATENCY) ? PA_SOURCE_DYNAMIC_LATENCY : 0),
 590                            ((value & PA_SINK_LATENCY) ? PA_SOURCE_LATENCY : 0) |
 591                            ((value & PA_SINK_DYNAMIC_LATENCY) ? PA_SINK_DYNAMIC_LATENCY : 0));
 592 }
 593
 594 /* Called from IO context, or before _put() from main context */
 595 void pa_sink_set_rtpoll(pa_sink *s, pa_rtpoll *p) {
 596     pa_sink_assert_ref(s);
 597     pa_sink_assert_io_context(s);
 598
 599     s->thread_info.rtpoll = p;
 600
 601     if (s->monitor_source)
 602         pa_source_set_rtpoll(s->monitor_source, p);
 603 }
 604
 605 /* Called from main context */
 606 int pa_sink_update_status(pa_sink*s) {
 607     pa_sink_assert_ref(s);
 608     pa_assert_ctl_context();
 609     pa_assert(PA_SINK_IS_LINKED(s->state));
 610
 611     if (s->state == PA_SINK_SUSPENDED)
 612         return 0;
 613
 614     return sink_set_state(s, pa_sink_used_by(s) ? PA_SINK_RUNNING : PA_SINK_IDLE);
 615 }
 616
 617 /* Called from main context */
 618 int pa_sink_suspend(pa_sink *s, pa_bool_t suspend, pa_suspend_cause_t cause) {
 619     pa_sink_assert_ref(s);
 620     pa_assert_ctl_context();
 621     pa_assert(PA_SINK_IS_LINKED(s->state));
 622     pa_assert(cause != 0);
 623
 624     if (suspend) {
 625         s->suspend_cause |= cause;
 626         s->monitor_source->suspend_cause |= cause;
 627     } else {
 628         s->suspend_cause &= ~cause;
 629         s->monitor_source->suspend_cause &= ~cause;
 630     }
 631
 632     if ((pa_sink_get_state(s) == PA_SINK_SUSPENDED) == !!s->suspend_cause)
 633         return 0;
 634
 635     pa_log_debug("Suspend cause of sink %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
 636
 637     if (s->suspend_cause)
 638         return sink_set_state(s, PA_SINK_SUSPENDED);
 639     else
 640         return sink_set_state(s, pa_sink_used_by(s) ? PA_SINK_RUNNING : PA_SINK_IDLE);
 641 }
 642
 643 /* Called from main context */
 644 pa_queue *pa_sink_move_all_start(pa_sink *s, pa_queue *q) {
 645     pa_sink_input *i, *n;
 646     uint32_t idx;
 647
 648     pa_sink_assert_ref(s);
 649     pa_assert_ctl_context();
 650     pa_assert(PA_SINK_IS_LINKED(s->state));
 651
 652     if (!q)
 653         q = pa_queue_new();
 654
 655     for (i = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); i; i = n) {
 656         n = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx));
 657
 658         pa_sink_input_ref(i);
 659
 660         if (pa_sink_input_start_move(i) >= 0)
 661             pa_queue_push(q, i);
 662         else
 663             pa_sink_input_unref(i);
 664     }
 665
 666     return q;
 667 }
 668
 669 /* Called from main context */
 670 void pa_sink_move_all_finish(pa_sink *s, pa_queue *q, pa_bool_t save) {
 671     pa_sink_input *i;
 672
 673     pa_sink_assert_ref(s);
 674     pa_assert_ctl_context();
 675     pa_assert(PA_SINK_IS_LINKED(s->state));
 676     pa_assert(q);
 677
 678     while ((i = PA_SINK_INPUT(pa_queue_pop(q)))) {
 679         if (pa_sink_input_finish_move(i, s, save) < 0)
 680             pa_sink_input_fail_move(i);
 681
 682         pa_sink_input_unref(i);
 683     }
 684
 685     pa_queue_free(q, NULL, NULL);
 686 }
 687
 688 /* Called from main context */
 689 void pa_sink_move_all_fail(pa_queue *q) {
 690     pa_sink_input *i;
 691
 692     pa_assert_ctl_context();
 693     pa_assert(q);
 694
 695     while ((i = PA_SINK_INPUT(pa_queue_pop(q)))) {
 696         pa_sink_input_fail_move(i);
 697         pa_sink_input_unref(i);
 698     }
 699
 700     pa_queue_free(q, NULL, NULL);
 701 }
 702
 703 /* Called from IO thread context */
 704 void pa_sink_process_rewind(pa_sink *s, size_t nbytes) {
 705     pa_sink_input *i;
 706     void *state = NULL;
 707
 708     pa_sink_assert_ref(s);
 709     pa_sink_assert_io_context(s);
 710     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
 711
 712     /* If nobody requested this and this is actually no real rewind
 713      * then we can short cut this. Please note that this means that
 714      * not all rewind requests triggered upstream will always be
 715      * translated in actual requests! */
 716     if (!s->thread_info.rewind_requested && nbytes <= 0)
 717         return;
 718
 719     s->thread_info.rewind_nbytes = 0;
 720     s->thread_info.rewind_requested = FALSE;
 721
 722     if (s->thread_info.state == PA_SINK_SUSPENDED)
 723         return;
 724
 725     if (nbytes > 0)
 726         pa_log_debug("Processing rewind...");
 727
 728     PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state) {
 729         pa_sink_input_assert_ref(i);
 730         pa_sink_input_process_rewind(i, nbytes);
 731     }
 732
 733     if (nbytes > 0)
 734         if (s->monitor_source && PA_SOURCE_IS_LINKED(s->monitor_source->thread_info.state))
 735             pa_source_process_rewind(s->monitor_source, nbytes);
 736 }
 737
 738 /* Called from IO thread context */
 739 static unsigned fill_mix_info(pa_sink *s, size_t *length, pa_mix_info *info, unsigned maxinfo) {
 740     pa_sink_input *i;
 741     unsigned n = 0;
 742     void *state = NULL;
 743     size_t mixlength = *length;
 744
 745     pa_sink_assert_ref(s);
 746     pa_sink_assert_io_context(s);
 747     pa_assert(info);
 748
 749     while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)) && maxinfo > 0) {
 750         pa_sink_input_assert_ref(i);
 751
 752         pa_sink_input_peek(i, *length, &info->chunk, &info->volume);
 753
 754         if (mixlength == 0 || info->chunk.length < mixlength)
 755             mixlength = info->chunk.length;
 756
 757         if (pa_memblock_is_silence(info->chunk.memblock)) {
 758             pa_memblock_unref(info->chunk.memblock);
 759             continue;
 760         }
 761
 762         info->userdata = pa_sink_input_ref(i);
 763
 764         pa_assert(info->chunk.memblock);
 765         pa_assert(info->chunk.length > 0);
 766
 767         info++;
 768         n++;
 769         maxinfo--;
 770     }
 771
 772     if (mixlength > 0)
 773         *length = mixlength;
 774
 775     return n;
 776 }
 777
 778 /* Called from IO thread context */
 779 static void inputs_drop(pa_sink *s, pa_mix_info *info, unsigned n, pa_memchunk *result) {
 780     pa_sink_input *i;
 781     void *state;
 782     unsigned p = 0;
 783     unsigned n_unreffed = 0;
 784
 785     pa_sink_assert_ref(s);
 786     pa_sink_assert_io_context(s);
 787     pa_assert(result);
 788     pa_assert(result->memblock);
 789     pa_assert(result->length > 0);
 790
 791     /* We optimize for the case where the order of the inputs has not changed */
 792
 793     PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state) {
 794         unsigned j;
 795         pa_mix_info* m = NULL;
 796
 797         pa_sink_input_assert_ref(i);
 798
 799         /* Let's try to find the matching entry info the pa_mix_info array */
 800         for (j = 0; j < n; j ++) {
 801
 802             if (info[p].userdata == i) {
 803                 m = info + p;
 804                 break;
 805             }
 806
 807             p++;
 808             if (p >= n)
 809                 p = 0;
 810         }
 811
 812         /* Drop read data */
 813         pa_sink_input_drop(i, result->length);
 814
 815         if (s->monitor_source && PA_SOURCE_IS_LINKED(s->monitor_source->thread_info.state)) {
 816
 817             if (pa_hashmap_size(i->thread_info.direct_outputs) > 0) {
 818                 void *ostate = NULL;
 819                 pa_source_output *o;
 820                 pa_memchunk c;
 821
 822                 if (m && m->chunk.memblock) {
 823                     c = m->chunk;
 824                     pa_memblock_ref(c.memblock);
 825                     pa_assert(result->length <= c.length);
 826                     c.length = result->length;
 827
 828                     pa_memchunk_make_writable(&c, 0);
 829                     pa_volume_memchunk(&c, &s->sample_spec, &m->volume);
 830                 } else {
 831                     c = s->silence;
 832                     pa_memblock_ref(c.memblock);
 833                     pa_assert(result->length <= c.length);
 834                     c.length = result->length;
 835                 }
 836
 837                 while ((o = pa_hashmap_iterate(i->thread_info.direct_outputs, &ostate, NULL))) {
 838                     pa_source_output_assert_ref(o);
 839                     pa_assert(o->direct_on_input == i);
 840                     pa_source_post_direct(s->monitor_source, o, &c);
 841                 }
 842
 843                 pa_memblock_unref(c.memblock);
 844             }
 845         }
 846
 847         if (m) {
 848             if (m->chunk.memblock)
 849                 pa_memblock_unref(m->chunk.memblock);
 850                 pa_memchunk_reset(&m->chunk);
 851
 852             pa_sink_input_unref(m->userdata);
 853             m->userdata = NULL;
 854
 855             n_unreffed += 1;
 856         }
 857     }
 858
 859     /* Now drop references to entries that are included in the
 860      * pa_mix_info array but don't exist anymore */
 861
 862     if (n_unreffed < n) {
 863         for (; n > 0; info++, n--) {
 864             if (info->userdata)
 865                 pa_sink_input_unref(info->userdata);
 866             if (info->chunk.memblock)
 867                 pa_memblock_unref(info->chunk.memblock);
 868         }
 869     }
 870
 871     if (s->monitor_source && PA_SOURCE_IS_LINKED(s->monitor_source->thread_info.state))
 872         pa_source_post(s->monitor_source, result);
 873 }
 874
 875 /* Called from IO thread context */
 876 void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result) {
 877     pa_mix_info info[MAX_MIX_CHANNELS];
 878     unsigned n;
 879     size_t block_size_max;
 880
 881     pa_sink_assert_ref(s);
 882     pa_sink_assert_io_context(s);
 883     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
 884     pa_assert(pa_frame_aligned(length, &s->sample_spec));
 885     pa_assert(result);
 886
 887     pa_assert(!s->thread_info.rewind_requested);
 888     pa_assert(s->thread_info.rewind_nbytes == 0);
 889
 890     if (s->thread_info.state == PA_SINK_SUSPENDED) {
 891         result->memblock = pa_memblock_ref(s->silence.memblock);
 892         result->index = s->silence.index;
 893         result->length = PA_MIN(s->silence.length, length);
 894         return;
 895     }
 896
 897     pa_sink_ref(s);
 898
 899     if (length <= 0)
 900         length = pa_frame_align(MIX_BUFFER_LENGTH, &s->sample_spec);
 901
 902     block_size_max = pa_mempool_block_size_max(s->core->mempool);
 903     if (length > block_size_max)
 904         length = pa_frame_align(block_size_max, &s->sample_spec);
 905
 906     pa_assert(length > 0);
 907
 908     n = fill_mix_info(s, &length, info, MAX_MIX_CHANNELS);
 909
 910     if (n == 0) {
 911
 912         *result = s->silence;
 913         pa_memblock_ref(result->memblock);
 914
 915         if (result->length > length)
 916             result->length = length;
 917
 918     } else if (n == 1) {
 919         pa_cvolume volume;
 920
 921         *result = info[0].chunk;
 922         pa_memblock_ref(result->memblock);
 923
 924         if (result->length > length)
 925             result->length = length;
 926
 927         pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume);
 928
 929         if (s->thread_info.soft_muted || pa_cvolume_is_muted(&volume)) {
 930             pa_memblock_unref(result->memblock);
 931             pa_silence_memchunk_get(&s->core->silence_cache,
 932                                     s->core->mempool,
 933                                     result,
 934                                     &s->sample_spec,
 935                                     result->length);
 936         } else if (!pa_cvolume_is_norm(&volume)) {
 937             pa_memchunk_make_writable(result, 0);
 938             pa_volume_memchunk(result, &s->sample_spec, &volume);
 939         }
 940     } else {
 941         void *ptr;
 942         result->memblock = pa_memblock_new(s->core->mempool, length);
 943
 944         ptr = pa_memblock_acquire(result->memblock);
 945         result->length = pa_mix(info, n,
 946                                 ptr, length,
 947                                 &s->sample_spec,
 948                                 &s->thread_info.soft_volume,
 949                                 s->thread_info.soft_muted);
 950         pa_memblock_release(result->memblock);
 951
 952         result->index = 0;
 953     }
 954
 955     inputs_drop(s, info, n, result);
 956
 957     pa_sink_unref(s);
 958 }
 959
 960 /* Called from IO thread context */
 961 void pa_sink_render_into(pa_sink*s, pa_memchunk *target) {
 962     pa_mix_info info[MAX_MIX_CHANNELS];
 963     unsigned n;
 964     size_t length, block_size_max;
 965
 966     pa_sink_assert_ref(s);
 967     pa_sink_assert_io_context(s);
 968     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
 969     pa_assert(target);
 970     pa_assert(target->memblock);
 971     pa_assert(target->length > 0);
 972     pa_assert(pa_frame_aligned(target->length, &s->sample_spec));
 973
 974     pa_assert(!s->thread_info.rewind_requested);
 975     pa_assert(s->thread_info.rewind_nbytes == 0);
 976
 977     if (s->thread_info.state == PA_SINK_SUSPENDED) {
 978         pa_silence_memchunk(target, &s->sample_spec);
 979         return;
 980     }
 981
 982     pa_sink_ref(s);
 983
 984     length = target->length;
 985     block_size_max = pa_mempool_block_size_max(s->core->mempool);
 986     if (length > block_size_max)
 987         length = pa_frame_align(block_size_max, &s->sample_spec);
 988
 989     pa_assert(length > 0);
 990
 991     n = fill_mix_info(s, &length, info, MAX_MIX_CHANNELS);
 992
 993     if (n == 0) {
 994         if (target->length > length)
 995             target->length = length;
 996
 997         pa_silence_memchunk(target, &s->sample_spec);
 998     } else if (n == 1) {
 999         pa_cvolume volume;
1000
1001         if (target->length > length)
1002             target->length = length;
1003
1004         pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume);
1005
1006         if (s->thread_info.soft_muted || pa_cvolume_is_muted(&volume))
1007             pa_silence_memchunk(target, &s->sample_spec);
1008         else {
1009             pa_memchunk vchunk;
1010
1011             vchunk = info[0].chunk;
1012             pa_memblock_ref(vchunk.memblock);
1013
1014             if (vchunk.length > length)
1015                 vchunk.length = length;
1016
1017             if (!pa_cvolume_is_norm(&volume)) {
1018                 pa_memchunk_make_writable(&vchunk, 0);
1019                 pa_volume_memchunk(&vchunk, &s->sample_spec, &volume);
1020             }
1021
1022             pa_memchunk_memcpy(target, &vchunk);
1023             pa_memblock_unref(vchunk.memblock);
1024         }
1025
1026     } else {
1027         void *ptr;
1028
1029         ptr = pa_memblock_acquire(target->memblock);
1030
1031         target->length = pa_mix(info, n,
1032                                 (uint8_t*) ptr + target->index, length,
1033                                 &s->sample_spec,
1034                                 &s->thread_info.soft_volume,
1035                                 s->thread_info.soft_muted);
1036
1037         pa_memblock_release(target->memblock);
1038     }
1039
1040     inputs_drop(s, info, n, target);
1041
1042     pa_sink_unref(s);
1043 }
1044
1045 /* Called from IO thread context */
1046 void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target) {
1047     pa_memchunk chunk;
1048     size_t l, d;
1049
1050     pa_sink_assert_ref(s);
1051     pa_sink_assert_io_context(s);
1052     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1053     pa_assert(target);
1054     pa_assert(target->memblock);
1055     pa_assert(target->length > 0);
1056     pa_assert(pa_frame_aligned(target->length, &s->sample_spec));
1057
1058     pa_assert(!s->thread_info.rewind_requested);
1059     pa_assert(s->thread_info.rewind_nbytes == 0);
1060
1061     if (s->thread_info.state == PA_SINK_SUSPENDED) {
1062         pa_silence_memchunk(target, &s->sample_spec);
1063         return;
1064     }
1065
1066     pa_sink_ref(s);
1067
1068     l = target->length;
1069     d = 0;
1070     while (l > 0) {
1071         chunk = *target;
1072         chunk.index += d;
1073         chunk.length -= d;
1074
1075         pa_sink_render_into(s, &chunk);
1076
1077         d += chunk.length;
1078         l -= chunk.length;
1079     }
1080
1081     pa_sink_unref(s);
1082 }
1083
1084 /* Called from IO thread context */
1085 void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result) {
1086     pa_sink_assert_ref(s);
1087     pa_sink_assert_io_context(s);
1088     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1089     pa_assert(length > 0);
1090     pa_assert(pa_frame_aligned(length, &s->sample_spec));
1091     pa_assert(result);
1092
1093     pa_assert(!s->thread_info.rewind_requested);
1094     pa_assert(s->thread_info.rewind_nbytes == 0);
1095
1096     pa_sink_ref(s);
1097
1098     pa_sink_render(s, length, result);
1099
1100     if (result->length < length) {
1101         pa_memchunk chunk;
1102
1103         pa_memchunk_make_writable(result, length);
1104
1105         chunk.memblock = result->memblock;
1106         chunk.index = result->index + result->length;
1107         chunk.length = length - result->length;
1108
1109         pa_sink_render_into_full(s, &chunk);
1110
1111         result->length = length;
1112     }
1113
1114     pa_sink_unref(s);
1115 }
1116
1117 /* Called from main thread */
1118 pa_usec_t pa_sink_get_latency(pa_sink *s) {
1119     pa_usec_t usec = 0;
1120
1121     pa_sink_assert_ref(s);
1122     pa_assert_ctl_context();
1123     pa_assert(PA_SINK_IS_LINKED(s->state));
1124
1125     /* The returned value is supposed to be in the time domain of the sound card! */
1126
1127     if (s->state == PA_SINK_SUSPENDED)
1128         return 0;
1129
1130     if (!(s->flags & PA_SINK_LATENCY))
1131         return 0;
1132
1133     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1134
1135     return usec;
1136 }
1137
1138 /* Called from IO thread */
1139 pa_usec_t pa_sink_get_latency_within_thread(pa_sink *s) {
1140     pa_usec_t usec = 0;
1141     pa_msgobject *o;
1142
1143     pa_sink_assert_ref(s);
1144     pa_sink_assert_io_context(s);
1145     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1146
1147     /* The returned value is supposed to be in the time domain of the sound card! */
1148
1149     if (s->thread_info.state == PA_SINK_SUSPENDED)
1150         return 0;
1151
1152     if (!(s->flags & PA_SINK_LATENCY))
1153         return 0;
1154
1155     o = PA_MSGOBJECT(s);
1156
1157     /* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
1158
1159     if (o->process_msg(o, PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1160         return -1;
1161
1162     return usec;
1163 }
1164
1165 static pa_cvolume* cvolume_remap_minimal_impact(
1166         pa_cvolume *v,
1167         const pa_cvolume *template,
1168         const pa_channel_map *from,
1169         const pa_channel_map *to) {
1170
1171     pa_cvolume t;
1172
1173     pa_assert(v);
1174     pa_assert(template);
1175     pa_assert(from);
1176     pa_assert(to);
1177
1178     pa_return_val_if_fail(pa_cvolume_compatible_with_channel_map(v, from), NULL);
1179     pa_return_val_if_fail(pa_cvolume_compatible_with_channel_map(template, to), NULL);
1180
1181     /* Much like pa_cvolume_remap(), but tries to minimize impact when
1182      * mapping from sink input to sink volumes:
1183      *
1184      * If template is a possible remapping from v it is used instead
1185      * of remapping anew.
1186      *
1187      * If the channel maps don't match we set an all-channel volume on
1188      * the sink to ensure that changing a volume on one stream has no
1189      * effect that cannot be compensated for in another stream that
1190      * does not have the same channel map as the sink. */
1191
1192     if (pa_channel_map_equal(from, to))
1193         return v;
1194
1195     t = *template;
1196     if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
1197         *v = *template;
1198         return v;
1199     }
1200
1201     pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
1202     return v;
1203 }
1204
1205 /* Called from main context */
1206 static void compute_reference_ratios(pa_sink *s) {
1207     uint32_t idx;
1208     pa_sink_input *i;
1209
1210     pa_sink_assert_ref(s);
1211     pa_assert_ctl_context();
1212     pa_assert(PA_SINK_IS_LINKED(s->state));
1213     pa_assert(s->flags & PA_SINK_FLAT_VOLUME);
1214
1215     PA_IDXSET_FOREACH(i, s->inputs, idx) {
1216         unsigned c;
1217         pa_cvolume remapped;
1218
1219         /*
1220          * Calculates the reference volume from the sink's reference
1221          * volume. This basically calculates:
1222          *
1223          * i->reference_ratio = i->volume / s->reference_volume
1224          */
1225
1226         remapped = s->reference_volume;
1227         pa_cvolume_remap(&remapped, &s->channel_map, &i->channel_map);
1228
1229         i->reference_ratio.channels = i->sample_spec.channels;
1230
1231         for (c = 0; c < i->sample_spec.channels; c++) {
1232
1233             /* We don't update when the sink volume is 0 anyway */
1234             if (remapped.values[c] <= PA_VOLUME_MUTED)
1235                 continue;
1236
1237             /* Don't update the reference ratio unless necessary */
1238             if (pa_sw_volume_multiply(
1239                         i->reference_ratio.values[c],
1240                         remapped.values[c]) == i->volume.values[c])
1241                 continue;
1242
1243             i->reference_ratio.values[c] = pa_sw_volume_divide(
1244                     i->volume.values[c],
1245                     remapped.values[c]);
1246         }
1247     }
1248 }
1249
1250 /* Called from main context */
1251 static void compute_real_ratios(pa_sink *s) {
1252     pa_sink_input *i;
1253     uint32_t idx;
1254
1255     pa_sink_assert_ref(s);
1256     pa_assert_ctl_context();
1257     pa_assert(PA_SINK_IS_LINKED(s->state));
1258     pa_assert(s->flags & PA_SINK_FLAT_VOLUME);
1259
1260     PA_IDXSET_FOREACH(i, s->inputs, idx) {
1261         unsigned c;
1262         pa_cvolume remapped;
1263
1264         /*
1265          * This basically calculates:
1266          *
1267          * i->real_ratio := i->volume / s->real_volume
1268          * i->soft_volume := i->real_ratio * i->volume_factor
1269          */
1270
1271         remapped = s->real_volume;
1272         pa_cvolume_remap(&remapped, &s->channel_map, &i->channel_map);
1273
1274         i->real_ratio.channels = i->sample_spec.channels;
1275         i->soft_volume.channels = i->sample_spec.channels;
1276
1277         for (c = 0; c < i->sample_spec.channels; c++) {
1278
1279             if (remapped.values[c] <= PA_VOLUME_MUTED) {
1280                 /* We leave i->real_ratio untouched */
1281                 i->soft_volume.values[c] = PA_VOLUME_MUTED;
1282                 continue;
1283             }
1284
1285             /* Don't lose accuracy unless necessary */
1286             if (pa_sw_volume_multiply(
1287                         i->real_ratio.values[c],
1288                         remapped.values[c]) != i->volume.values[c])
1289
1290                 i->real_ratio.values[c] = pa_sw_volume_divide(
1291                         i->volume.values[c],
1292                         remapped.values[c]);
1293
1294             i->soft_volume.values[c] = pa_sw_volume_multiply(
1295                     i->real_ratio.values[c],
1296                     i->volume_factor.values[c]);
1297         }
1298
1299         /* We don't copy the soft_volume to the thread_info data
1300          * here. That must be done by the caller */
1301     }
1302 }
1303
1304 /* Called from main thread */
1305 static void compute_real_volume(pa_sink *s) {
1306     pa_sink_input *i;
1307     uint32_t idx;
1308
1309     pa_sink_assert_ref(s);
1310     pa_assert_ctl_context();
1311     pa_assert(PA_SINK_IS_LINKED(s->state));
1312     pa_assert(s->flags & PA_SINK_FLAT_VOLUME);
1313
1314     /* This determines the maximum volume of all streams and sets
1315      * s->real_volume accordingly. */
1316
1317     if (pa_idxset_isempty(s->inputs)) {
1318         /* In the special case that we have no sink input we leave the
1319          * volume unmodified. */
1320         s->real_volume = s->reference_volume;
1321         return;
1322     }
1323
1324     pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
1325
1326     /* First let's determine the new maximum volume of all inputs
1327      * connected to this sink */
1328     PA_IDXSET_FOREACH(i, s->inputs, idx) {
1329         pa_cvolume remapped;
1330
1331         remapped = i->volume;
1332         cvolume_remap_minimal_impact(&remapped, &s->real_volume, &i->channel_map, &s->channel_map);
1333         pa_cvolume_merge(&s->real_volume, &s->real_volume, &remapped);
1334     }
1335
1336     /* Then, let's update the real ratios/soft volumes of all inputs
1337      * connected to this sink */
1338     compute_real_ratios(s);
1339 }
1340
1341 /* Called from main thread */
1342 static void propagate_reference_volume(pa_sink *s) {
1343     pa_sink_input *i;
1344     uint32_t idx;
1345
1346     pa_sink_assert_ref(s);
1347     pa_assert_ctl_context();
1348     pa_assert(PA_SINK_IS_LINKED(s->state));
1349     pa_assert(s->flags & PA_SINK_FLAT_VOLUME);
1350
1351     /* This is called whenever the sink volume changes that is not
1352      * caused by a sink input volume change. We need to fix up the
1353      * sink input volumes accordingly */
1354
1355     PA_IDXSET_FOREACH(i, s->inputs, idx) {
1356         pa_cvolume old_volume, remapped;
1357
1358         old_volume = i->volume;
1359
1360         /* This basically calculates:
1361          *
1362          * i->volume := s->reference_volume * i->reference_ratio  */
1363
1364         remapped = s->reference_volume;
1365         pa_cvolume_remap(&remapped, &s->channel_map, &i->channel_map);
1366         pa_sw_cvolume_multiply(&i->volume, &remapped, &i->reference_ratio);
1367
1368         /* The volume changed, let's tell people so */
1369         if (!pa_cvolume_equal(&old_volume, &i->volume)) {
1370
1371             if (i->volume_changed)
1372                 i->volume_changed(i);
1373
1374             pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
1375         }
1376     }
1377 }
1378
1379 /* Called from main thread */
1380 void pa_sink_set_volume(
1381         pa_sink *s,
1382         const pa_cvolume *volume,
1383         pa_bool_t send_msg,
1384         pa_bool_t save) {
1385
1386     pa_cvolume old_reference_volume;
1387     pa_bool_t reference_changed;
1388
1389     pa_sink_assert_ref(s);
1390     pa_assert_ctl_context();
1391     pa_assert(PA_SINK_IS_LINKED(s->state));
1392     pa_assert(!volume || pa_cvolume_valid(volume));
1393     pa_assert(volume || (s->flags & PA_SINK_FLAT_VOLUME));
1394     pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
1395
1396     /* As a special exception we accept mono volumes on all sinks --
1397      * even on those with more complex channel maps */
1398
1399     /* If volume is NULL we synchronize the sink's real and reference
1400      * volumes with the stream volumes. If it is not NULL we update
1401      * the reference_volume with it. */
1402
1403     old_reference_volume = s->reference_volume;
1404
1405     if (volume) {
1406
1407         if (pa_cvolume_compatible(volume, &s->sample_spec))
1408             s->reference_volume = *volume;
1409         else
1410             pa_cvolume_scale(&s->reference_volume, pa_cvolume_max(volume));
1411
1412         if (s->flags & PA_SINK_FLAT_VOLUME) {
1413             /* OK, propagate this volume change back to the inputs */
1414             propagate_reference_volume(s);
1415
1416             /* And now recalculate the real volume */
1417             compute_real_volume(s);
1418         } else
1419             s->real_volume = s->reference_volume;
1420
1421     } else {
1422         pa_assert(s->flags & PA_SINK_FLAT_VOLUME);
1423
1424         /* Ok, let's determine the new real volume */
1425         compute_real_volume(s);
1426
1427         /* Let's 'push' the reference volume if necessary */
1428         pa_cvolume_merge(&s->reference_volume, &s->reference_volume, &s->real_volume);
1429
1430         /* We need to fix the reference ratios of all streams now that
1431          * we changed the reference volume */
1432         compute_reference_ratios(s);
1433     }
1434
1435     reference_changed = !pa_cvolume_equal(&old_reference_volume, &s->reference_volume);
1436     s->save_volume = (!reference_changed && s->save_volume) || save;
1437
1438     if (s->set_volume) {
1439         /* If we have a function set_volume(), then we do not apply a
1440          * soft volume by default. However, set_volume() is free to
1441          * apply one to s->soft_volume */
1442
1443         pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1444         s->set_volume(s);
1445
1446     } else
1447         /* If we have no function set_volume(), then the soft volume
1448          * becomes the virtual volume */
1449         s->soft_volume = s->real_volume;
1450
1451     /* This tells the sink that soft and/or virtual volume changed */
1452     if (send_msg)
1453         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1454
1455     if (reference_changed)
1456         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1457 }
1458
1459 /* Called from main thread. Only to be called by sink implementor */
1460 void pa_sink_set_soft_volume(pa_sink *s, const pa_cvolume *volume) {
1461     pa_sink_assert_ref(s);
1462     pa_assert_ctl_context();
1463
1464     if (!volume)
1465         pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1466     else
1467         s->soft_volume = *volume;
1468
1469     if (PA_SINK_IS_LINKED(s->state))
1470         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1471     else
1472         s->thread_info.soft_volume = s->soft_volume;
1473 }
1474
1475 static void propagate_real_volume(pa_sink *s, const pa_cvolume *old_real_volume) {
1476     pa_sink_input *i;
1477     uint32_t idx;
1478     pa_cvolume old_reference_volume;
1479
1480     pa_sink_assert_ref(s);
1481     pa_assert_ctl_context();
1482     pa_assert(PA_SINK_IS_LINKED(s->state));
1483
1484     /* This is called when the hardware's real volume changes due to
1485      * some external event. We copy the real volume into our
1486      * reference volume and then rebuild the stream volumes based on
1487      * i->real_ratio which should stay fixed. */
1488
1489     if (pa_cvolume_equal(old_real_volume, &s->real_volume))
1490         return;
1491
1492     old_reference_volume = s->reference_volume;
1493
1494     /* 1. Make the real volume the reference volume */
1495     s->reference_volume = s->real_volume;
1496
1497     if (s->flags & PA_SINK_FLAT_VOLUME) {
1498
1499         PA_IDXSET_FOREACH(i, s->inputs, idx) {
1500             pa_cvolume old_volume, remapped;
1501
1502             old_volume = i->volume;
1503
1504             /* 2. Since the sink's reference and real volumes are equal
1505              * now our ratios should be too. */
1506             i->reference_ratio = i->real_ratio;
1507
1508             /* 3. Recalculate the new stream reference volume based on the
1509              * reference ratio and the sink's reference volume.
1510              *
1511              * This basically calculates:
1512              *
1513              * i->volume = s->reference_volume * i->reference_ratio
1514              *
1515              * This is identical to propagate_reference_volume() */
1516             remapped = s->reference_volume;
1517             pa_cvolume_remap(&remapped, &s->channel_map, &i->channel_map);
1518             pa_sw_cvolume_multiply(&i->volume, &remapped, &i->reference_ratio);
1519
1520             /* Notify if something changed */
1521             if (!pa_cvolume_equal(&old_volume, &i->volume)) {
1522
1523                 if (i->volume_changed)
1524                     i->volume_changed(i);
1525
1526                 pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
1527             }
1528         }
1529     }
1530
1531     /* Something got changed in the hardware. It probably makes sense
1532      * to save changed hw settings given that hw volume changes not
1533      * triggered by PA are almost certainly done by the user. */
1534     s->save_volume = TRUE;
1535
1536     if (!pa_cvolume_equal(&old_reference_volume, &s->reference_volume))
1537         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1538 }
1539
1540 /* Called from main thread */
1541 const pa_cvolume *pa_sink_get_volume(pa_sink *s, pa_bool_t force_refresh) {
1542     pa_sink_assert_ref(s);
1543     pa_assert_ctl_context();
1544     pa_assert(PA_SINK_IS_LINKED(s->state));
1545
1546     if (s->refresh_volume || force_refresh) {
1547         struct pa_cvolume old_real_volume;
1548
1549         old_real_volume = s->real_volume;
1550
1551         if (s->get_volume)
1552             s->get_volume(s);
1553
1554         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1555
1556         propagate_real_volume(s, &old_real_volume);
1557     }
1558
1559     return &s->reference_volume;
1560 }
1561
1562 /* Called from main thread */
1563 void pa_sink_volume_changed(pa_sink *s, const pa_cvolume *new_real_volume) {
1564     pa_cvolume old_real_volume;
1565
1566     pa_sink_assert_ref(s);
1567     pa_assert_ctl_context();
1568     pa_assert(PA_SINK_IS_LINKED(s->state));
1569
1570     /* The sink implementor may call this if the volume changed to make sure everyone is notified */
1571
1572     old_real_volume = s->real_volume;
1573     s->real_volume = *new_real_volume;
1574
1575     propagate_real_volume(s, &old_real_volume);
1576 }
1577
1578 /* Called from main thread */
1579 void pa_sink_set_mute(pa_sink *s, pa_bool_t mute, pa_bool_t save) {
1580     pa_bool_t old_muted;
1581
1582     pa_sink_assert_ref(s);
1583     pa_assert_ctl_context();
1584     pa_assert(PA_SINK_IS_LINKED(s->state));
1585
1586     old_muted = s->muted;
1587     s->muted = mute;
1588     s->save_muted = (old_muted == s->muted && s->save_muted) || save;
1589
1590     if (s->set_mute)
1591         s->set_mute(s);
1592
1593     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1594
1595     if (old_muted != s->muted)
1596         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1597 }
1598
1599 /* Called from main thread */
1600 pa_bool_t pa_sink_get_mute(pa_sink *s, pa_bool_t force_refresh) {
1601
1602     pa_sink_assert_ref(s);
1603     pa_assert_ctl_context();
1604     pa_assert(PA_SINK_IS_LINKED(s->state));
1605
1606     if (s->refresh_muted || force_refresh) {
1607         pa_bool_t old_muted = s->muted;
1608
1609         if (s->get_mute)
1610             s->get_mute(s);
1611
1612         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MUTE, NULL, 0, NULL) == 0);
1613
1614         if (old_muted != s->muted) {
1615             s->save_muted = TRUE;
1616
1617             pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1618
1619             /* Make sure the soft mute status stays in sync */
1620             pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1621         }
1622     }
1623
1624     return s->muted;
1625 }
1626
1627 /* Called from main thread */
1628 void pa_sink_mute_changed(pa_sink *s, pa_bool_t new_muted) {
1629     pa_sink_assert_ref(s);
1630     pa_assert_ctl_context();
1631     pa_assert(PA_SINK_IS_LINKED(s->state));
1632
1633     /* The sink implementor may call this if the volume changed to make sure everyone is notified */
1634
1635     if (s->muted == new_muted)
1636         return;
1637
1638     s->muted = new_muted;
1639     s->save_muted = TRUE;
1640
1641     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1642 }
1643
1644 /* Called from main thread */
1645 pa_bool_t pa_sink_update_proplist(pa_sink *s, pa_update_mode_t mode, pa_proplist *p) {
1646     pa_sink_assert_ref(s);
1647     pa_assert_ctl_context();
1648
1649     if (p)
1650         pa_proplist_update(s->proplist, mode, p);
1651
1652     if (PA_SINK_IS_LINKED(s->state)) {
1653         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PROPLIST_CHANGED], s);
1654         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1655     }
1656
1657     return TRUE;
1658 }
1659
1660 /* Called from main thread */
1661 /* FIXME -- this should be dropped and be merged into pa_sink_update_proplist() */
1662 void pa_sink_set_description(pa_sink *s, const char *description) {
1663     const char *old;
1664     pa_sink_assert_ref(s);
1665     pa_assert_ctl_context();
1666
1667     if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1668         return;
1669
1670     old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1671
1672     if (old && description && pa_streq(old, description))
1673         return;
1674
1675     if (description)
1676         pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1677     else
1678         pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1679
1680     if (s->monitor_source) {
1681         char *n;
1682
1683         n = pa_sprintf_malloc("Monitor Source of %s", description ? description : s->name);
1684         pa_source_set_description(s->monitor_source, n);
1685         pa_xfree(n);
1686     }
1687
1688     if (PA_SINK_IS_LINKED(s->state)) {
1689         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1690         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PROPLIST_CHANGED], s);
1691     }
1692 }
1693
1694 /* Called from main thread */
1695 unsigned pa_sink_linked_by(pa_sink *s) {
1696     unsigned ret;
1697
1698     pa_sink_assert_ref(s);
1699     pa_assert_ctl_context();
1700     pa_assert(PA_SINK_IS_LINKED(s->state));
1701
1702     ret = pa_idxset_size(s->inputs);
1703
1704     /* We add in the number of streams connected to us here. Please
1705      * note the asymmmetry to pa_sink_used_by()! */
1706
1707     if (s->monitor_source)
1708         ret += pa_source_linked_by(s->monitor_source);
1709
1710     return ret;
1711 }
1712
1713 /* Called from main thread */
1714 unsigned pa_sink_used_by(pa_sink *s) {
1715     unsigned ret;
1716
1717     pa_sink_assert_ref(s);
1718     pa_assert_ctl_context();
1719     pa_assert(PA_SINK_IS_LINKED(s->state));
1720
1721     ret = pa_idxset_size(s->inputs);
1722     pa_assert(ret >= s->n_corked);
1723
1724     /* Streams connected to our monitor source do not matter for
1725      * pa_sink_used_by()!.*/
1726
1727     return ret - s->n_corked;
1728 }
1729
1730 /* Called from main thread */
1731 unsigned pa_sink_check_suspend(pa_sink *s) {
1732     unsigned ret;
1733     pa_sink_input *i;
1734     uint32_t idx;
1735
1736     pa_sink_assert_ref(s);
1737     pa_assert_ctl_context();
1738
1739     if (!PA_SINK_IS_LINKED(s->state))
1740         return 0;
1741
1742     ret = 0;
1743
1744     PA_IDXSET_FOREACH(i, s->inputs, idx) {
1745         pa_sink_input_state_t st;
1746
1747         st = pa_sink_input_get_state(i);
1748         pa_assert(PA_SINK_INPUT_IS_LINKED(st));
1749
1750         if (st == PA_SINK_INPUT_CORKED)
1751             continue;
1752
1753         if (i->flags & PA_SINK_INPUT_DONT_INHIBIT_AUTO_SUSPEND)
1754             continue;
1755
1756         ret ++;
1757     }
1758
1759     if (s->monitor_source)
1760         ret += pa_source_check_suspend(s->monitor_source);
1761
1762     return ret;
1763 }
1764
1765 /* Called from the IO thread */
1766 static void sync_input_volumes_within_thread(pa_sink *s) {
1767     pa_sink_input *i;
1768     void *state = NULL;
1769
1770     pa_sink_assert_ref(s);
1771     pa_sink_assert_io_context(s);
1772
1773     PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state) {
1774         if (pa_atomic_load(&i->before_ramping_v))
1775             i->thread_info.future_soft_volume = i->soft_volume;
1776
1777         if (pa_cvolume_equal(&i->thread_info.soft_volume, &i->soft_volume))
1778             continue;
1779
1780         if (!pa_atomic_load(&i->before_ramping_v))
1781             i->thread_info.soft_volume = i->soft_volume;
1782         pa_sink_input_request_rewind(i, 0, TRUE, FALSE, FALSE);
1783     }
1784 }
1785
1786 /* Called from IO thread, except when it is not */
1787 int pa_sink_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1788     pa_sink *s = PA_SINK(o);
1789     pa_sink_assert_ref(s);
1790
1791     switch ((pa_sink_message_t) code) {
1792
1793         case PA_SINK_MESSAGE_ADD_INPUT: {
1794             pa_sink_input *i = PA_SINK_INPUT(userdata);
1795
1796             /* If you change anything here, make sure to change the
1797              * sink input handling a few lines down at
1798              * PA_SINK_MESSAGE_FINISH_MOVE, too. */
1799
1800             pa_hashmap_put(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index), pa_sink_input_ref(i));
1801
1802             /* Since the caller sleeps in pa_sink_input_put(), we can
1803              * safely access data outside of thread_info even though
1804              * it is mutable */
1805
1806             if ((i->thread_info.sync_prev = i->sync_prev)) {
1807                 pa_assert(i->sink == i->thread_info.sync_prev->sink);
1808                 pa_assert(i->sync_prev->sync_next == i);
1809                 i->thread_info.sync_prev->thread_info.sync_next = i;
1810             }
1811
1812             if ((i->thread_info.sync_next = i->sync_next)) {
1813                 pa_assert(i->sink == i->thread_info.sync_next->sink);
1814                 pa_assert(i->sync_next->sync_prev == i);
1815                 i->thread_info.sync_next->thread_info.sync_prev = i;
1816             }
1817
1818             pa_assert(!i->thread_info.attached);
1819             i->thread_info.attached = TRUE;
1820
1821             if (i->attach)
1822                 i->attach(i);
1823
1824             pa_sink_input_set_state_within_thread(i, i->state);
1825
1826             /* The requested latency of the sink input needs to be
1827              * fixed up and then configured on the sink */
1828
1829             if (i->thread_info.requested_sink_latency != (pa_usec_t) -1)
1830                 pa_sink_input_set_requested_latency_within_thread(i, i->thread_info.requested_sink_latency);
1831
1832             pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind);
1833             pa_sink_input_update_max_request(i, s->thread_info.max_request);
1834
1835             /* We don't rewind here automatically. This is left to the
1836              * sink input implementor because some sink inputs need a
1837              * slow start, i.e. need some time to buffer client
1838              * samples before beginning streaming. */
1839
1840             /* In flat volume mode we need to update the volume as
1841              * well */
1842             return o->process_msg(o, PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL);
1843         }
1844
1845         case PA_SINK_MESSAGE_REMOVE_INPUT: {
1846             pa_sink_input *i = PA_SINK_INPUT(userdata);
1847
1848             /* If you change anything here, make sure to change the
1849              * sink input handling a few lines down at
1850              * PA_SINK_MESSAGE_PREPAPRE_MOVE, too. */
1851
1852             if (i->detach)
1853                 i->detach(i);
1854
1855             pa_sink_input_set_state_within_thread(i, i->state);
1856
1857             pa_assert(i->thread_info.attached);
1858             i->thread_info.attached = FALSE;
1859
1860             /* Since the caller sleeps in pa_sink_input_unlink(),
1861              * we can safely access data outside of thread_info even
1862              * though it is mutable */
1863
1864             pa_assert(!i->sync_prev);
1865             pa_assert(!i->sync_next);
1866
1867             if (i->thread_info.sync_prev) {
1868                 i->thread_info.sync_prev->thread_info.sync_next = i->thread_info.sync_prev->sync_next;
1869                 i->thread_info.sync_prev = NULL;
1870             }
1871
1872             if (i->thread_info.sync_next) {
1873                 i->thread_info.sync_next->thread_info.sync_prev = i->thread_info.sync_next->sync_prev;
1874                 i->thread_info.sync_next = NULL;
1875             }
1876
1877             if (pa_hashmap_remove(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index)))
1878                 pa_sink_input_unref(i);
1879
1880             pa_sink_invalidate_requested_latency(s, TRUE);
1881             pa_sink_request_rewind(s, (size_t) -1);
1882
1883             /* In flat volume mode we need to update the volume as
1884              * well */
1885             return o->process_msg(o, PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL);
1886         }
1887
1888         case PA_SINK_MESSAGE_START_MOVE: {
1889             pa_sink_input *i = PA_SINK_INPUT(userdata);
1890
1891             /* We don't support moving synchronized streams. */
1892             pa_assert(!i->sync_prev);
1893             pa_assert(!i->sync_next);
1894             pa_assert(!i->thread_info.sync_next);
1895             pa_assert(!i->thread_info.sync_prev);
1896
1897             if (i->thread_info.state != PA_SINK_INPUT_CORKED) {
1898                 pa_usec_t usec = 0;
1899                 size_t sink_nbytes, total_nbytes;
1900
1901                 /* Get the latency of the sink */
1902                 usec = pa_sink_get_latency_within_thread(s);
1903                 sink_nbytes = pa_usec_to_bytes(usec, &s->sample_spec);
1904                 total_nbytes = sink_nbytes + pa_memblockq_get_length(i->thread_info.render_memblockq);
1905
1906                 if (total_nbytes > 0) {
1907                     i->thread_info.rewrite_nbytes = i->thread_info.resampler ? pa_resampler_request(i->thread_info.resampler, total_nbytes) : total_nbytes;
1908                     i->thread_info.rewrite_flush = TRUE;
1909                     pa_sink_input_process_rewind(i, sink_nbytes);
1910                 }
1911             }
1912
1913             if (i->detach)
1914                 i->detach(i);
1915
1916             pa_assert(i->thread_info.attached);
1917             i->thread_info.attached = FALSE;
1918
1919             /* Let's remove the sink input ...*/
1920             if (pa_hashmap_remove(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index)))
1921                 pa_sink_input_unref(i);
1922
1923             pa_sink_invalidate_requested_latency(s, TRUE);
1924
1925             pa_log_debug("Requesting rewind due to started move");
1926             pa_sink_request_rewind(s, (size_t) -1);
1927
1928             /* In flat volume mode we need to update the volume as
1929              * well */
1930             return o->process_msg(o, PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL);
1931         }
1932
1933         case PA_SINK_MESSAGE_FINISH_MOVE: {
1934             pa_sink_input *i = PA_SINK_INPUT(userdata);
1935
1936             /* We don't support moving synchronized streams. */
1937             pa_assert(!i->sync_prev);
1938             pa_assert(!i->sync_next);
1939             pa_assert(!i->thread_info.sync_next);
1940             pa_assert(!i->thread_info.sync_prev);
1941
1942             pa_hashmap_put(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index), pa_sink_input_ref(i));
1943
1944             pa_assert(!i->thread_info.attached);
1945             i->thread_info.attached = TRUE;
1946
1947             if (i->attach)
1948                 i->attach(i);
1949
1950             if (i->thread_info.requested_sink_latency != (pa_usec_t) -1)
1951                 pa_sink_input_set_requested_latency_within_thread(i, i->thread_info.requested_sink_latency);
1952
1953             pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind);
1954             pa_sink_input_update_max_request(i, s->thread_info.max_request);
1955
1956             if (i->thread_info.state != PA_SINK_INPUT_CORKED) {
1957                 pa_usec_t usec = 0;
1958                 size_t nbytes;
1959
1960                 /* Get the latency of the sink */
1961                 usec = pa_sink_get_latency_within_thread(s);
1962                 nbytes = pa_usec_to_bytes(usec, &s->sample_spec);
1963
1964                 if (nbytes > 0)
1965                     pa_sink_input_drop(i, nbytes);
1966
1967                 pa_log_debug("Requesting rewind due to finished move");
1968                 pa_sink_request_rewind(s, nbytes);
1969             }
1970
1971             /* In flat volume mode we need to update the volume as
1972              * well */
1973             return o->process_msg(o, PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL);
1974         }
1975
1976         case PA_SINK_MESSAGE_SET_VOLUME:
1977
1978             if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
1979                 s->thread_info.soft_volume = s->soft_volume;
1980                 pa_sink_request_rewind(s, (size_t) -1);
1981             }
1982
1983             if (!(s->flags & PA_SINK_FLAT_VOLUME))
1984                 return 0;
1985
1986             /* Fall through ... */
1987
1988         case PA_SINK_MESSAGE_SYNC_VOLUMES:
1989             sync_input_volumes_within_thread(s);
1990             return 0;
1991
1992         case PA_SINK_MESSAGE_GET_VOLUME:
1993             return 0;
1994
1995         case PA_SINK_MESSAGE_SET_MUTE:
1996
1997             if (s->thread_info.soft_muted != s->muted) {
1998                 s->thread_info.soft_muted = s->muted;
1999                 pa_sink_request_rewind(s, (size_t) -1);
2000             }
2001
2002             return 0;
2003
2004         case PA_SINK_MESSAGE_GET_MUTE:
2005             return 0;
2006
2007         case PA_SINK_MESSAGE_SET_STATE: {
2008
2009             pa_bool_t suspend_change =
2010                 (s->thread_info.state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
2011                 (PA_SINK_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SINK_SUSPENDED);
2012
2013             s->thread_info.state = PA_PTR_TO_UINT(userdata);
2014
2015             if (s->thread_info.state == PA_SINK_SUSPENDED) {
2016                 s->thread_info.rewind_nbytes = 0;
2017                 s->thread_info.rewind_requested = FALSE;
2018             }
2019
2020             if (suspend_change) {
2021                 pa_sink_input *i;
2022                 void *state = NULL;
2023
2024                 while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)))
2025                     if (i->suspend_within_thread)
2026                         i->suspend_within_thread(i, s->thread_info.state == PA_SINK_SUSPENDED);
2027             }
2028
2029             return 0;
2030         }
2031
2032         case PA_SINK_MESSAGE_DETACH:
2033
2034             /* Detach all streams */
2035             pa_sink_detach_within_thread(s);
2036             return 0;
2037
2038         case PA_SINK_MESSAGE_ATTACH:
2039
2040             /* Reattach all streams */
2041             pa_sink_attach_within_thread(s);
2042             return 0;
2043
2044         case PA_SINK_MESSAGE_GET_REQUESTED_LATENCY: {
2045
2046             pa_usec_t *usec = userdata;
2047             *usec = pa_sink_get_requested_latency_within_thread(s);
2048
2049             /* Yes, that's right, the IO thread will see -1 when no
2050              * explicit requested latency is configured, the main
2051              * thread will see max_latency */
2052             if (*usec == (pa_usec_t) -1)
2053                 *usec = s->thread_info.max_latency;
2054
2055             return 0;
2056         }
2057
2058         case PA_SINK_MESSAGE_SET_LATENCY_RANGE: {
2059             pa_usec_t *r = userdata;
2060
2061             pa_sink_set_latency_range_within_thread(s, r[0], r[1]);
2062
2063             return 0;
2064         }
2065
2066         case PA_SINK_MESSAGE_GET_LATENCY_RANGE: {
2067             pa_usec_t *r = userdata;
2068
2069             r[0] = s->thread_info.min_latency;
2070             r[1] = s->thread_info.max_latency;
2071
2072             return 0;
2073         }
2074
2075         case PA_SINK_MESSAGE_GET_FIXED_LATENCY:
2076
2077             *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
2078             return 0;
2079
2080         case PA_SINK_MESSAGE_SET_FIXED_LATENCY:
2081
2082             pa_sink_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
2083             return 0;
2084
2085         case PA_SINK_MESSAGE_GET_MAX_REWIND:
2086
2087             *((size_t*) userdata) = s->thread_info.max_rewind;
2088             return 0;
2089
2090         case PA_SINK_MESSAGE_GET_MAX_REQUEST:
2091
2092             *((size_t*) userdata) = s->thread_info.max_request;
2093             return 0;
2094
2095         case PA_SINK_MESSAGE_SET_MAX_REWIND:
2096
2097             pa_sink_set_max_rewind_within_thread(s, (size_t) offset);
2098             return 0;
2099
2100         case PA_SINK_MESSAGE_SET_MAX_REQUEST:
2101
2102             pa_sink_set_max_request_within_thread(s, (size_t) offset);
2103             return 0;
2104
2105         case PA_SINK_MESSAGE_GET_LATENCY:
2106         case PA_SINK_MESSAGE_MAX:
2107             ;
2108     }
2109
2110     return -1;
2111 }
2112
2113 /* Called from main thread */
2114 int pa_sink_suspend_all(pa_core *c, pa_bool_t suspend, pa_suspend_cause_t cause) {
2115     pa_sink *sink;
2116     uint32_t idx;
2117     int ret = 0;
2118
2119     pa_core_assert_ref(c);
2120     pa_assert_ctl_context();
2121     pa_assert(cause != 0);
2122
2123     PA_IDXSET_FOREACH(sink, c->sinks, idx) {
2124         int r;
2125
2126         if ((r = pa_sink_suspend(sink, suspend, cause)) < 0)
2127             ret = r;
2128     }
2129
2130     return ret;
2131 }
2132
2133 /* Called from main thread */
2134 void pa_sink_detach(pa_sink *s) {
2135     pa_sink_assert_ref(s);
2136     pa_assert_ctl_context();
2137     pa_assert(PA_SINK_IS_LINKED(s->state));
2138
2139     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_DETACH, NULL, 0, NULL) == 0);
2140 }
2141
2142 /* Called from main thread */
2143 void pa_sink_attach(pa_sink *s) {
2144     pa_sink_assert_ref(s);
2145     pa_assert_ctl_context();
2146     pa_assert(PA_SINK_IS_LINKED(s->state));
2147
2148     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
2149 }
2150
2151 /* Called from IO thread */
2152 void pa_sink_detach_within_thread(pa_sink *s) {
2153     pa_sink_input *i;
2154     void *state = NULL;
2155
2156     pa_sink_assert_ref(s);
2157     pa_sink_assert_io_context(s);
2158     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
2159
2160     PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2161         if (i->detach)
2162             i->detach(i);
2163
2164     if (s->monitor_source)
2165         pa_source_detach_within_thread(s->monitor_source);
2166 }
2167
2168 /* Called from IO thread */
2169 void pa_sink_attach_within_thread(pa_sink *s) {
2170     pa_sink_input *i;
2171     void *state = NULL;
2172
2173     pa_sink_assert_ref(s);
2174     pa_sink_assert_io_context(s);
2175     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
2176
2177     PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2178         if (i->attach)
2179             i->attach(i);
2180
2181     if (s->monitor_source)
2182         pa_source_attach_within_thread(s->monitor_source);
2183 }
2184
2185 /* Called from IO thread */
2186 void pa_sink_request_rewind(pa_sink*s, size_t nbytes) {
2187     pa_sink_assert_ref(s);
2188     pa_sink_assert_io_context(s);
2189     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
2190
2191     if (s->thread_info.state == PA_SINK_SUSPENDED)
2192         return;
2193
2194     if (nbytes == (size_t) -1)
2195         nbytes = s->thread_info.max_rewind;
2196
2197     nbytes = PA_MIN(nbytes, s->thread_info.max_rewind);
2198
2199     if (s->thread_info.rewind_requested &&
2200         nbytes <= s->thread_info.rewind_nbytes)
2201         return;
2202
2203     s->thread_info.rewind_nbytes = nbytes;
2204     s->thread_info.rewind_requested = TRUE;
2205
2206     if (s->request_rewind)
2207         s->request_rewind(s);
2208 }
2209
2210 /* Called from IO thread */
2211 pa_usec_t pa_sink_get_requested_latency_within_thread(pa_sink *s) {
2212     pa_usec_t result = (pa_usec_t) -1;
2213     pa_sink_input *i;
2214     void *state = NULL;
2215     pa_usec_t monitor_latency;
2216
2217     pa_sink_assert_ref(s);
2218     pa_sink_assert_io_context(s);
2219
2220     if (!(s->flags & PA_SINK_DYNAMIC_LATENCY))
2221         return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2222
2223     if (s->thread_info.requested_latency_valid)
2224         return s->thread_info.requested_latency;
2225
2226     PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2227         if (i->thread_info.requested_sink_latency != (pa_usec_t) -1 &&
2228             (result == (pa_usec_t) -1 || result > i->thread_info.requested_sink_latency))
2229             result = i->thread_info.requested_sink_latency;
2230
2231     monitor_latency = pa_source_get_requested_latency_within_thread(s->monitor_source);
2232
2233     if (monitor_latency != (pa_usec_t) -1 &&
2234         (result == (pa_usec_t) -1 || result > monitor_latency))
2235         result = monitor_latency;
2236
2237     if (result != (pa_usec_t) -1)
2238         result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2239
2240     if (PA_SINK_IS_LINKED(s->thread_info.state)) {
2241         /* Only cache if properly initialized */
2242         s->thread_info.requested_latency = result;
2243         s->thread_info.requested_latency_valid = TRUE;
2244     }
2245
2246     return result;
2247 }
2248
2249 /* Called from main thread */
2250 pa_usec_t pa_sink_get_requested_latency(pa_sink *s) {
2251     pa_usec_t usec = 0;
2252
2253     pa_sink_assert_ref(s);
2254     pa_assert_ctl_context();
2255     pa_assert(PA_SINK_IS_LINKED(s->state));
2256
2257     if (s->state == PA_SINK_SUSPENDED)
2258         return 0;
2259
2260     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2261     return usec;
2262 }
2263
2264 /* Called from IO as well as the main thread -- the latter only before the IO thread started up */
2265 void pa_sink_set_max_rewind_within_thread(pa_sink *s, size_t max_rewind) {
2266     pa_sink_input *i;
2267     void *state = NULL;
2268
2269     pa_sink_assert_ref(s);
2270     pa_sink_assert_io_context(s);
2271
2272     if (max_rewind == s->thread_info.max_rewind)
2273         return;
2274
2275     s->thread_info.max_rewind = max_rewind;
2276
2277     if (PA_SINK_IS_LINKED(s->thread_info.state))
2278         PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2279             pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind);
2280
2281     if (s->monitor_source)
2282         pa_source_set_max_rewind_within_thread(s->monitor_source, s->thread_info.max_rewind);
2283 }
2284
2285 /* Called from main thread */
2286 void pa_sink_set_max_rewind(pa_sink *s, size_t max_rewind) {
2287     pa_sink_assert_ref(s);
2288     pa_assert_ctl_context();
2289
2290     if (PA_SINK_IS_LINKED(s->state))
2291         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2292     else
2293         pa_sink_set_max_rewind_within_thread(s, max_rewind);
2294 }
2295
2296 /* Called from IO as well as the main thread -- the latter only before the IO thread started up */
2297 void pa_sink_set_max_request_within_thread(pa_sink *s, size_t max_request) {
2298     void *state = NULL;
2299
2300     pa_sink_assert_ref(s);
2301     pa_sink_assert_io_context(s);
2302
2303     if (max_request == s->thread_info.max_request)
2304         return;
2305
2306     s->thread_info.max_request = max_request;
2307
2308     if (PA_SINK_IS_LINKED(s->thread_info.state)) {
2309         pa_sink_input *i;
2310
2311         PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2312             pa_sink_input_update_max_request(i, s->thread_info.max_request);
2313     }
2314 }
2315
2316 /* Called from main thread */
2317 void pa_sink_set_max_request(pa_sink *s, size_t max_request) {
2318     pa_sink_assert_ref(s);
2319     pa_assert_ctl_context();
2320
2321     if (PA_SINK_IS_LINKED(s->state))
2322         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MAX_REQUEST, NULL, max_request, NULL) == 0);
2323     else
2324         pa_sink_set_max_request_within_thread(s, max_request);
2325 }
2326
2327 /* Called from IO thread */
2328 void pa_sink_invalidate_requested_latency(pa_sink *s, pa_bool_t dynamic) {
2329     pa_sink_input *i;
2330     void *state = NULL;
2331
2332     pa_sink_assert_ref(s);
2333     pa_sink_assert_io_context(s);
2334
2335     if ((s->flags & PA_SINK_DYNAMIC_LATENCY))
2336         s->thread_info.requested_latency_valid = FALSE;
2337     else if (dynamic)
2338         return;
2339
2340     if (PA_SINK_IS_LINKED(s->thread_info.state)) {
2341
2342         if (s->update_requested_latency)
2343             s->update_requested_latency(s);
2344
2345         PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2346             if (i->update_sink_requested_latency)
2347                 i->update_sink_requested_latency(i);
2348     }
2349 }
2350
2351 /* Called from main thread */
2352 void pa_sink_set_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2353     pa_sink_assert_ref(s);
2354     pa_assert_ctl_context();
2355
2356     /* min_latency == 0:           no limit
2357      * min_latency anything else:  specified limit
2358      *
2359      * Similar for max_latency */
2360
2361     if (min_latency < ABSOLUTE_MIN_LATENCY)
2362         min_latency = ABSOLUTE_MIN_LATENCY;
2363
2364     if (max_latency <= 0 ||
2365         max_latency > ABSOLUTE_MAX_LATENCY)
2366         max_latency = ABSOLUTE_MAX_LATENCY;
2367
2368     pa_assert(min_latency <= max_latency);
2369
2370     /* Hmm, let's see if someone forgot to set PA_SINK_DYNAMIC_LATENCY here... */
2371     pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2372                max_latency == ABSOLUTE_MAX_LATENCY) ||
2373               (s->flags & PA_SINK_DYNAMIC_LATENCY));
2374
2375     if (PA_SINK_IS_LINKED(s->state)) {
2376         pa_usec_t r[2];
2377
2378         r[0] = min_latency;
2379         r[1] = max_latency;
2380
2381         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2382     } else
2383         pa_sink_set_latency_range_within_thread(s, min_latency, max_latency);
2384 }
2385
2386 /* Called from main thread */
2387 void pa_sink_get_latency_range(pa_sink *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2388    pa_sink_assert_ref(s);
2389    pa_assert_ctl_context();
2390    pa_assert(min_latency);
2391    pa_assert(max_latency);
2392
2393    if (PA_SINK_IS_LINKED(s->state)) {
2394        pa_usec_t r[2] = { 0, 0 };
2395
2396        pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2397
2398        *min_latency = r[0];
2399        *max_latency = r[1];
2400    } else {
2401        *min_latency = s->thread_info.min_latency;
2402        *max_latency = s->thread_info.max_latency;
2403    }
2404 }
2405
2406 /* Called from IO thread */
2407 void pa_sink_set_latency_range_within_thread(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2408     pa_sink_assert_ref(s);
2409     pa_sink_assert_io_context(s);
2410
2411     pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2412     pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2413     pa_assert(min_latency <= max_latency);
2414
2415     /* Hmm, let's see if someone forgot to set PA_SINK_DYNAMIC_LATENCY here... */
2416     pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2417                max_latency == ABSOLUTE_MAX_LATENCY) ||
2418               (s->flags & PA_SINK_DYNAMIC_LATENCY));
2419
2420     if (s->thread_info.min_latency == min_latency &&
2421         s->thread_info.max_latency == max_latency)
2422         return;
2423
2424     s->thread_info.min_latency = min_latency;
2425     s->thread_info.max_latency = max_latency;
2426
2427     if (PA_SINK_IS_LINKED(s->thread_info.state)) {
2428         pa_sink_input *i;
2429         void *state = NULL;
2430
2431         PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2432             if (i->update_sink_latency_range)
2433                 i->update_sink_latency_range(i);
2434     }
2435
2436     pa_sink_invalidate_requested_latency(s, FALSE);
2437
2438     pa_source_set_latency_range_within_thread(s->monitor_source, min_latency, max_latency);
2439 }
2440
2441 /* Called from main thread */
2442 void pa_sink_set_fixed_latency(pa_sink *s, pa_usec_t latency) {
2443     pa_sink_assert_ref(s);
2444     pa_assert_ctl_context();
2445
2446     if (s->flags & PA_SINK_DYNAMIC_LATENCY) {
2447         pa_assert(latency == 0);
2448         return;
2449     }
2450
2451     if (latency < ABSOLUTE_MIN_LATENCY)
2452         latency = ABSOLUTE_MIN_LATENCY;
2453
2454     if (latency > ABSOLUTE_MAX_LATENCY)
2455         latency = ABSOLUTE_MAX_LATENCY;
2456
2457     if (PA_SINK_IS_LINKED(s->state))
2458         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
2459     else
2460         s->thread_info.fixed_latency = latency;
2461
2462     pa_source_set_fixed_latency(s->monitor_source, latency);
2463 }
2464
2465 /* Called from main thread */
2466 pa_usec_t pa_sink_get_fixed_latency(pa_sink *s) {
2467     pa_usec_t latency;
2468
2469     pa_sink_assert_ref(s);
2470     pa_assert_ctl_context();
2471
2472     if (s->flags & PA_SINK_DYNAMIC_LATENCY)
2473         return 0;
2474
2475     if (PA_SINK_IS_LINKED(s->state))
2476         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
2477     else
2478         latency = s->thread_info.fixed_latency;
2479
2480     return latency;
2481 }
2482
2483 /* Called from IO thread */
2484 void pa_sink_set_fixed_latency_within_thread(pa_sink *s, pa_usec_t latency) {
2485     pa_sink_assert_ref(s);
2486     pa_sink_assert_io_context(s);
2487
2488     if (s->flags & PA_SINK_DYNAMIC_LATENCY) {
2489         pa_assert(latency == 0);
2490         return;
2491     }
2492
2493     pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
2494     pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
2495
2496     if (s->thread_info.fixed_latency == latency)
2497         return;
2498
2499     s->thread_info.fixed_latency = latency;
2500
2501     if (PA_SINK_IS_LINKED(s->thread_info.state)) {
2502         pa_sink_input *i;
2503         void *state = NULL;
2504
2505         PA_HASHMAP_FOREACH(i, s->thread_info.inputs, state)
2506             if (i->update_sink_fixed_latency)
2507                 i->update_sink_fixed_latency(i);
2508     }
2509
2510     pa_sink_invalidate_requested_latency(s, FALSE);
2511
2512     pa_source_set_fixed_latency_within_thread(s->monitor_source, latency);
2513 }
2514
2515 /* Called from main context */
2516 size_t pa_sink_get_max_rewind(pa_sink *s) {
2517     size_t r;
2518     pa_sink_assert_ref(s);
2519     pa_assert_ctl_context();
2520
2521     if (!PA_SINK_IS_LINKED(s->state))
2522         return s->thread_info.max_rewind;
2523
2524     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2525
2526     return r;
2527 }
2528
2529 /* Called from main context */
2530 size_t pa_sink_get_max_request(pa_sink *s) {
2531     size_t r;
2532     pa_sink_assert_ref(s);
2533     pa_assert_ctl_context();
2534
2535     if (!PA_SINK_IS_LINKED(s->state))
2536         return s->thread_info.max_request;
2537
2538     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MAX_REQUEST, &r, 0, NULL) == 0);
2539
2540     return r;
2541 }
2542
2543 /* Called from main context */
2544 int pa_sink_set_port(pa_sink *s, const char *name, pa_bool_t save) {
2545     pa_device_port *port;
2546
2547     pa_sink_assert_ref(s);
2548     pa_assert_ctl_context();
2549
2550     if (!s->set_port) {
2551         pa_log_debug("set_port() operation not implemented for sink %u \"%s\"", s->index, s->name);
2552         return -PA_ERR_NOTIMPLEMENTED;
2553     }
2554
2555     if (!s->ports)
2556         return -PA_ERR_NOENTITY;
2557
2558     if (!(port = pa_hashmap_get(s->ports, name)))
2559         return -PA_ERR_NOENTITY;
2560
2561     if (s->active_port == port) {
2562         s->save_port = s->save_port || save;
2563         return 0;
2564     }
2565
2566     if ((s->set_port(s, port)) < 0)
2567         return -PA_ERR_NOENTITY;
2568
2569     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2570
2571     pa_log_info("Changed port of sink %u \"%s\" to %s", s->index, s->name, port->name);
2572
2573     s->active_port = port;
2574     s->save_port = save;
2575
2576     return 0;
2577 }
2578
2579 pa_bool_t pa_device_init_icon(pa_proplist *p, pa_bool_t is_sink) {
2580     const char *ff, *c, *t = NULL, *s = "", *profile, *bus;
2581
2582     pa_assert(p);
2583
2584     if (pa_proplist_contains(p, PA_PROP_DEVICE_ICON_NAME))
2585         return TRUE;
2586
2587     if ((ff = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR))) {
2588
2589         if (pa_streq(ff, "microphone"))
2590             t = "audio-input-microphone";
2591         else if (pa_streq(ff, "webcam"))
2592             t = "camera-web";
2593         else if (pa_streq(ff, "computer"))
2594             t = "computer";
2595         else if (pa_streq(ff, "handset"))
2596             t = "phone";
2597         else if (pa_streq(ff, "portable"))
2598             t = "multimedia-player";
2599         else if (pa_streq(ff, "tv"))
2600             t = "video-display";
2601
2602         /*
2603          * The following icons are not part of the icon naming spec,
2604          * because Rodney Dawes sucks as the maintainer of that spec.
2605          *
2606          * http://lists.freedesktop.org/archives/xdg/2009-May/010397.html
2607          */
2608         else if (pa_streq(ff, "headset"))
2609             t = "audio-headset";
2610         else if (pa_streq(ff, "headphone"))
2611             t = "audio-headphones";
2612         else if (pa_streq(ff, "speaker"))
2613             t = "audio-speakers";
2614         else if (pa_streq(ff, "hands-free"))
2615             t = "audio-handsfree";
2616     }
2617
2618     if (!t)
2619         if ((c = pa_proplist_gets(p, PA_PROP_DEVICE_CLASS)))
2620             if (pa_streq(c, "modem"))
2621                 t = "modem";
2622
2623     if (!t) {
2624         if (is_sink)
2625             t = "audio-card";
2626         else
2627             t = "audio-input-microphone";
2628     }
2629
2630     if ((profile = pa_proplist_gets(p, PA_PROP_DEVICE_PROFILE_NAME))) {
2631         if (strstr(profile, "analog"))
2632             s = "-analog";
2633         else if (strstr(profile, "iec958"))
2634             s = "-iec958";
2635         else if (strstr(profile, "hdmi"))
2636             s = "-hdmi";
2637     }
2638
2639     bus = pa_proplist_gets(p, PA_PROP_DEVICE_BUS);
2640
2641     pa_proplist_setf(p, PA_PROP_DEVICE_ICON_NAME, "%s%s%s%s", t, pa_strempty(s), bus ? "-" : "", pa_strempty(bus));
2642
2643     return TRUE;
2644 }
2645
2646 pa_bool_t pa_device_init_description(pa_proplist *p) {
2647     const char *s, *d = NULL, *k;
2648     pa_assert(p);
2649
2650     if (pa_proplist_contains(p, PA_PROP_DEVICE_DESCRIPTION))
2651         return TRUE;
2652
2653     if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR)))
2654         if (pa_streq(s, "internal"))
2655             d = _("Internal Audio");
2656
2657     if (!d)
2658         if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_CLASS)))
2659             if (pa_streq(s, "modem"))
2660                 d = _("Modem");
2661
2662     if (!d)
2663         d = pa_proplist_gets(p, PA_PROP_DEVICE_PRODUCT_NAME);
2664
2665     if (!d)
2666         return FALSE;
2667
2668     k = pa_proplist_gets(p, PA_PROP_DEVICE_PROFILE_DESCRIPTION);
2669
2670     if (d && k)
2671         pa_proplist_setf(p, PA_PROP_DEVICE_DESCRIPTION, _("%s %s"), d, k);
2672     else if (d)
2673         pa_proplist_sets(p, PA_PROP_DEVICE_DESCRIPTION, d);
2674
2675     return TRUE;
2676 }
2677
2678 pa_bool_t pa_device_init_intended_roles(pa_proplist *p) {
2679     const char *s;
2680     pa_assert(p);
2681
2682     if (pa_proplist_contains(p, PA_PROP_DEVICE_INTENDED_ROLES))
2683         return TRUE;
2684
2685     if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR)))
2686         if (pa_streq(s, "handset") || pa_streq(s, "hands-free")) {
2687             pa_proplist_sets(p, PA_PROP_DEVICE_INTENDED_ROLES, "phone");
2688             return TRUE;
2689         }
2690
2691     return FALSE;
2692 }
2693
2694 unsigned pa_device_init_priority(pa_proplist *p) {
2695     const char *s;
2696     unsigned priority = 0;
2697
2698     pa_assert(p);
2699
2700     if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_CLASS))) {
2701
2702         if (pa_streq(s, "sound"))
2703             priority += 9000;
2704         else if (!pa_streq(s, "modem"))
2705             priority += 1000;
2706     }
2707
2708     if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR))) {
2709
2710         if (pa_streq(s, "internal"))
2711             priority += 900;
2712         else if (pa_streq(s, "speaker"))
2713             priority += 500;
2714         else if (pa_streq(s, "headphone"))
2715             priority += 400;
2716     }
2717
2718     if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_BUS))) {
2719
2720         if (pa_streq(s, "pci"))
2721             priority += 50;
2722         else if (pa_streq(s, "usb"))
2723             priority += 40;
2724         else if (pa_streq(s, "bluetooth"))
2725             priority += 30;
2726     }
2727
2728     if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_PROFILE_NAME))) {
2729
2730         if (pa_startswith(s, "analog-"))
2731             priority += 9;
2732         else if (pa_startswith(s, "iec958-"))
2733             priority += 8;
2734     }
2735
2736     return priority;
2737 }