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 static PA_DEFINE_CHECK_TYPE(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     memset(data, 0, sizeof(*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
 181     s = pa_msgobject_new(pa_sink);
 182
 183     if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SINK, s, data->namereg_fail))) {
 184         pa_log_debug("Failed to register name %s.", data->name);
 185         pa_xfree(s);
 186         return NULL;
 187     }
 188
 189     pa_sink_new_data_set_name(data, name);
 190
 191     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_NEW], data) < 0) {
 192         pa_xfree(s);
 193         pa_namereg_unregister(core, name);
 194         return NULL;
 195     }
 196
 197     /* FIXME, need to free s here on failure */
 198
 199     pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
 200     pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
 201
 202     pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
 203
 204     if (!data->channel_map_is_set)
 205         pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
 206
 207     pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
 208     pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
 209
 210     if (!data->volume_is_set)
 211         pa_cvolume_reset(&data->volume, data->sample_spec.channels);
 212
 213     pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
 214     pa_return_null_if_fail(data->volume.channels == data->sample_spec.channels);
 215
 216     if (!data->muted_is_set)
 217         data->muted = FALSE;
 218
 219     if (data->card)
 220         pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
 221
 222     pa_device_init_description(data->proplist);
 223     pa_device_init_icon(data->proplist, TRUE);
 224     pa_device_init_intended_roles(data->proplist);
 225
 226     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_FIXATE], data) < 0) {
 227         pa_xfree(s);
 228         pa_namereg_unregister(core, name);
 229         return NULL;
 230     }
 231
 232     s->parent.parent.free = sink_free;
 233     s->parent.process_msg = pa_sink_process_msg;
 234
 235     s->core = core;
 236     s->state = PA_SINK_INIT;
 237     s->flags = flags;
 238     s->suspend_cause = 0;
 239     s->name = pa_xstrdup(name);
 240     s->proplist = pa_proplist_copy(data->proplist);
 241     s->driver = pa_xstrdup(pa_path_get_filename(data->driver));
 242     s->module = data->module;
 243     s->card = data->card;
 244
 245     s->sample_spec = data->sample_spec;
 246     s->channel_map = data->channel_map;
 247
 248     s->inputs = pa_idxset_new(NULL, NULL);
 249     s->n_corked = 0;
 250
 251     s->reference_volume = s->virtual_volume = data->volume;
 252     pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
 253     s->base_volume = PA_VOLUME_NORM;
 254     s->n_volume_steps = PA_VOLUME_NORM+1;
 255     s->muted = data->muted;
 256     s->refresh_volume = s->refresh_muted = FALSE;
 257
 258     s->fixed_latency = flags & PA_SINK_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
 259
 260     reset_callbacks(s);
 261     s->userdata = NULL;
 262
 263     s->asyncmsgq = NULL;
 264     s->rtpoll = NULL;
 265
 266     /* As a minor optimization we just steal the list instead of
 267      * copying it here */
 268     s->ports = data->ports;
 269     data->ports = NULL;
 270
 271     s->active_port = NULL;
 272     s->save_port = FALSE;
 273
 274     if (data->active_port && s->ports)
 275         if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
 276             s->save_port = data->save_port;
 277
 278     if (!s->active_port && s->ports) {
 279         void *state;
 280         pa_device_port *p;
 281
 282         PA_HASHMAP_FOREACH(p, s->ports, state)
 283             if (!s->active_port || p->priority > s->active_port->priority)
 284                 s->active_port = p;
 285     }
 286
 287     s->save_volume = data->save_volume;
 288     s->save_muted = data->save_muted;
 289
 290     pa_silence_memchunk_get(
 291             &core->silence_cache,
 292             core->mempool,
 293             &s->silence,
 294             &s->sample_spec,
 295             0);
 296
 297     s->thread_info.inputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 298     s->thread_info.soft_volume =  s->soft_volume;
 299     s->thread_info.soft_muted = s->muted;
 300     s->thread_info.state = s->state;
 301     s->thread_info.rewind_nbytes = 0;
 302     s->thread_info.rewind_requested = FALSE;
 303     s->thread_info.max_rewind = 0;
 304     s->thread_info.max_request = 0;
 305     s->thread_info.requested_latency_valid = FALSE;
 306     s->thread_info.requested_latency = 0;
 307     s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
 308     s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
 309
 310     pa_assert_se(pa_idxset_put(core->sinks, s, &s->index) >= 0);
 311
 312     if (s->card)
 313         pa_assert_se(pa_idxset_put(s->card->sinks, s, NULL) >= 0);
 314
 315     pt = pa_proplist_to_string_sep(s->proplist, "\n    ");
 316     pa_log_info("Created sink %u \"%s\" with sample spec %s and channel map %s\n    %s",
 317                 s->index,
 318                 s->name,
 319                 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
 320                 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map),
 321                 pt);
 322     pa_xfree(pt);
 323
 324     pa_source_new_data_init(&source_data);
 325     pa_source_new_data_set_sample_spec(&source_data, &s->sample_spec);
 326     pa_source_new_data_set_channel_map(&source_data, &s->channel_map);
 327     source_data.name = pa_sprintf_malloc("%s.monitor", name);
 328     source_data.driver = data->driver;
 329     source_data.module = data->module;
 330     source_data.card = data->card;
 331
 332     dn = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
 333     pa_proplist_setf(source_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Monitor of %s", dn ? dn : s->name);
 334     pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_CLASS, "monitor");
 335
 336     s->monitor_source = pa_source_new(core, &source_data,
 337                                       ((flags & PA_SINK_LATENCY) ? PA_SOURCE_LATENCY : 0) |
 338                                       ((flags & PA_SINK_DYNAMIC_LATENCY) ? PA_SOURCE_DYNAMIC_LATENCY : 0));
 339
 340     pa_source_new_data_done(&source_data);
 341
 342     if (!s->monitor_source) {
 343         pa_sink_unlink(s);
 344         pa_sink_unref(s);
 345         return NULL;
 346     }
 347
 348     s->monitor_source->monitor_of = s;
 349
 350     pa_source_set_latency_range(s->monitor_source, s->thread_info.min_latency, s->thread_info.max_latency);
 351     pa_source_set_max_rewind(s->monitor_source, s->thread_info.max_rewind);
 352
 353     return s;
 354 }
 355
 356 /* Called from main context */
 357 static int sink_set_state(pa_sink *s, pa_sink_state_t state) {
 358     int ret;
 359     pa_bool_t suspend_change;
 360     pa_sink_state_t original_state;
 361
 362     pa_assert(s);
 363
 364     if (s->state == state)
 365         return 0;
 366
 367     original_state = s->state;
 368
 369     suspend_change =
 370         (original_state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(state)) ||
 371         (PA_SINK_IS_OPENED(original_state) && state == PA_SINK_SUSPENDED);
 372
 373     if (s->set_state)
 374         if ((ret = s->set_state(s, state)) < 0)
 375             return ret;
 376
 377     if (s->asyncmsgq)
 378         if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
 379
 380             if (s->set_state)
 381                 s->set_state(s, original_state);
 382
 383             return ret;
 384         }
 385
 386     s->state = state;
 387
 388     if (state != PA_SINK_UNLINKED) { /* if we enter UNLINKED state pa_sink_unlink() will fire the apropriate events */
 389         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_STATE_CHANGED], s);
 390         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 391     }
 392
 393     if (suspend_change) {
 394         pa_sink_input *i;
 395         uint32_t idx;
 396
 397         /* We're suspending or resuming, tell everyone about it */
 398
 399         for (i = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); i; i = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx)))
 400             if (s->state == PA_SINK_SUSPENDED &&
 401                 (i->flags & PA_SINK_INPUT_FAIL_ON_SUSPEND))
 402                 pa_sink_input_kill(i);
 403             else if (i->suspend)
 404                 i->suspend(i, state == PA_SINK_SUSPENDED);
 405
 406         if (s->monitor_source)
 407             pa_source_sync_suspend(s->monitor_source);
 408     }
 409
 410     return 0;
 411 }
 412
 413 /* Called from main context */
 414 void pa_sink_put(pa_sink* s) {
 415     pa_sink_assert_ref(s);
 416
 417     pa_assert(s->state == PA_SINK_INIT);
 418
 419     /* The following fields must be initialized properly when calling _put() */
 420     pa_assert(s->asyncmsgq);
 421     pa_assert(s->rtpoll);
 422     pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
 423
 424     /* Generally, flags should be initialized via pa_sink_new(). As a
 425      * special exception we allow volume related flags to be set
 426      * between _new() and _put(). */
 427
 428     if (!(s->flags & PA_SINK_HW_VOLUME_CTRL))
 429         s->flags |= PA_SINK_DECIBEL_VOLUME;
 430
 431     if ((s->flags & PA_SINK_DECIBEL_VOLUME) && s->core->flat_volumes)
 432         s->flags |= PA_SINK_FLAT_VOLUME;
 433
 434     s->thread_info.soft_volume = s->soft_volume;
 435     s->thread_info.soft_muted = s->muted;
 436
 437     pa_assert((s->flags & PA_SINK_HW_VOLUME_CTRL) || (s->base_volume == PA_VOLUME_NORM && s->flags & PA_SINK_DECIBEL_VOLUME));
 438     pa_assert(!(s->flags & PA_SINK_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
 439     pa_assert(!(s->flags & PA_SINK_DYNAMIC_LATENCY) == (s->fixed_latency != 0));
 440     pa_assert(!(s->flags & PA_SINK_LATENCY) == !(s->monitor_source->flags & PA_SOURCE_LATENCY));
 441     pa_assert(!(s->flags & PA_SINK_DYNAMIC_LATENCY) == !(s->monitor_source->flags & PA_SOURCE_DYNAMIC_LATENCY));
 442
 443     pa_assert(s->monitor_source->fixed_latency == s->fixed_latency);
 444     pa_assert(s->monitor_source->thread_info.min_latency == s->thread_info.min_latency);
 445     pa_assert(s->monitor_source->thread_info.max_latency == s->thread_info.max_latency);
 446
 447     pa_assert_se(sink_set_state(s, PA_SINK_IDLE) == 0);
 448
 449     pa_source_put(s->monitor_source);
 450
 451     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_NEW, s->index);
 452     pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PUT], s);
 453 }
 454
 455 /* Called from main context */
 456 void pa_sink_unlink(pa_sink* s) {
 457     pa_bool_t linked;
 458     pa_sink_input *i, *j = NULL;
 459
 460     pa_assert(s);
 461
 462     /* Please note that pa_sink_unlink() does more than simply
 463      * reversing pa_sink_put(). It also undoes the registrations
 464      * already done in pa_sink_new()! */
 465
 466     /* All operations here shall be idempotent, i.e. pa_sink_unlink()
 467      * may be called multiple times on the same sink without bad
 468      * effects. */
 469
 470     linked = PA_SINK_IS_LINKED(s->state);
 471
 472     if (linked)
 473         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_UNLINK], s);
 474
 475     if (s->state != PA_SINK_UNLINKED)
 476         pa_namereg_unregister(s->core, s->name);
 477     pa_idxset_remove_by_data(s->core->sinks, s, NULL);
 478
 479     if (s->card)
 480         pa_idxset_remove_by_data(s->card->sinks, s, NULL);
 481
 482     while ((i = pa_idxset_first(s->inputs, NULL))) {
 483         pa_assert(i != j);
 484         pa_sink_input_kill(i);
 485         j = i;
 486     }
 487
 488     if (linked)
 489         sink_set_state(s, PA_SINK_UNLINKED);
 490     else
 491         s->state = PA_SINK_UNLINKED;
 492
 493     reset_callbacks(s);
 494
 495     if (s->monitor_source)
 496         pa_source_unlink(s->monitor_source);
 497
 498     if (linked) {
 499         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
 500         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_UNLINK_POST], s);
 501     }
 502 }
 503
 504 /* Called from main context */
 505 static void sink_free(pa_object *o) {
 506     pa_sink *s = PA_SINK(o);
 507     pa_sink_input *i;
 508
 509     pa_assert(s);
 510     pa_assert(pa_sink_refcnt(s) == 0);
 511
 512     if (PA_SINK_IS_LINKED(s->state))
 513         pa_sink_unlink(s);
 514
 515     pa_log_info("Freeing sink %u \"%s\"", s->index, s->name);
 516
 517     if (s->monitor_source) {
 518         pa_source_unref(s->monitor_source);
 519         s->monitor_source = NULL;
 520     }
 521
 522     pa_idxset_free(s->inputs, NULL, NULL);
 523
 524     while ((i = pa_hashmap_steal_first(s->thread_info.inputs)))
 525         pa_sink_input_unref(i);
 526
 527     pa_hashmap_free(s->thread_info.inputs, NULL, NULL);
 528
 529     if (s->silence.memblock)
 530         pa_memblock_unref(s->silence.memblock);
 531
 532     pa_xfree(s->name);
 533     pa_xfree(s->driver);
 534
 535     if (s->proplist)
 536         pa_proplist_free(s->proplist);
 537
 538     if (s->ports) {
 539         pa_device_port *p;
 540
 541         while ((p = pa_hashmap_steal_first(s->ports)))
 542             pa_device_port_free(p);
 543
 544         pa_hashmap_free(s->ports, NULL, NULL);
 545     }
 546
 547     pa_xfree(s);
 548 }
 549
 550 /* Called from main context */
 551 void pa_sink_set_asyncmsgq(pa_sink *s, pa_asyncmsgq *q) {
 552     pa_sink_assert_ref(s);
 553
 554     s->asyncmsgq = q;
 555
 556     if (s->monitor_source)
 557         pa_source_set_asyncmsgq(s->monitor_source, q);
 558 }
 559
 560 /* Called from main context */
 561 void pa_sink_set_rtpoll(pa_sink *s, pa_rtpoll *p) {
 562     pa_sink_assert_ref(s);
 563
 564     s->rtpoll = p;
 565
 566     if (s->monitor_source)
 567         pa_source_set_rtpoll(s->monitor_source, p);
 568 }
 569
 570 /* Called from main context */
 571 int pa_sink_update_status(pa_sink*s) {
 572     pa_sink_assert_ref(s);
 573     pa_assert(PA_SINK_IS_LINKED(s->state));
 574
 575     if (s->state == PA_SINK_SUSPENDED)
 576         return 0;
 577
 578     return sink_set_state(s, pa_sink_used_by(s) ? PA_SINK_RUNNING : PA_SINK_IDLE);
 579 }
 580
 581 /* Called from main context */
 582 int pa_sink_suspend(pa_sink *s, pa_bool_t suspend, pa_suspend_cause_t cause) {
 583     pa_sink_assert_ref(s);
 584     pa_assert(PA_SINK_IS_LINKED(s->state));
 585     pa_assert(cause != 0);
 586
 587     if (suspend) {
 588         s->suspend_cause |= cause;
 589         s->monitor_source->suspend_cause |= cause;
 590     } else {
 591         s->suspend_cause &= ~cause;
 592         s->monitor_source->suspend_cause &= ~cause;
 593     }
 594
 595     if ((pa_sink_get_state(s) == PA_SINK_SUSPENDED) == !!s->suspend_cause)
 596         return 0;
 597
 598     pa_log_debug("Suspend cause of sink %s is 0x%04x, %s", s->name, s->suspend_cause, s->suspend_cause ? "suspending" : "resuming");
 599
 600     if (s->suspend_cause)
 601         return sink_set_state(s, PA_SINK_SUSPENDED);
 602     else
 603         return sink_set_state(s, pa_sink_used_by(s) ? PA_SINK_RUNNING : PA_SINK_IDLE);
 604 }
 605
 606 /* Called from main context */
 607 pa_queue *pa_sink_move_all_start(pa_sink *s, pa_queue *q) {
 608     pa_sink_input *i, *n;
 609     uint32_t idx;
 610
 611     pa_sink_assert_ref(s);
 612     pa_assert(PA_SINK_IS_LINKED(s->state));
 613
 614     if (!q)
 615         q = pa_queue_new();
 616
 617     for (i = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); i; i = n) {
 618         n = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx));
 619
 620         pa_sink_input_ref(i);
 621
 622         if (pa_sink_input_start_move(i) >= 0)
 623             pa_queue_push(q, i);
 624         else
 625             pa_sink_input_unref(i);
 626     }
 627
 628     return q;
 629 }
 630
 631 /* Called from main context */
 632 void pa_sink_move_all_finish(pa_sink *s, pa_queue *q, pa_bool_t save) {
 633     pa_sink_input *i;
 634
 635     pa_sink_assert_ref(s);
 636     pa_assert(PA_SINK_IS_LINKED(s->state));
 637     pa_assert(q);
 638
 639     while ((i = PA_SINK_INPUT(pa_queue_pop(q)))) {
 640         if (pa_sink_input_finish_move(i, s, save) < 0)
 641             pa_sink_input_kill(i);
 642
 643         pa_sink_input_unref(i);
 644     }
 645
 646     pa_queue_free(q, NULL, NULL);
 647 }
 648
 649 /* Called from main context */
 650 void pa_sink_move_all_fail(pa_queue *q) {
 651     pa_sink_input *i;
 652     pa_assert(q);
 653
 654     while ((i = PA_SINK_INPUT(pa_queue_pop(q)))) {
 655         if (pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_FAIL], i) == PA_HOOK_OK) {
 656             pa_sink_input_kill(i);
 657             pa_sink_input_unref(i);
 658         }
 659     }
 660
 661     pa_queue_free(q, NULL, NULL);
 662 }
 663
 664 /* Called from IO thread context */
 665 void pa_sink_process_rewind(pa_sink *s, size_t nbytes) {
 666     pa_sink_input *i;
 667     void *state = NULL;
 668     pa_sink_assert_ref(s);
 669     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
 670
 671     /* If nobody requested this and this is actually no real rewind
 672      * then we can short cut this */
 673     if (!s->thread_info.rewind_requested && nbytes <= 0)
 674         return;
 675
 676     s->thread_info.rewind_nbytes = 0;
 677     s->thread_info.rewind_requested = FALSE;
 678
 679     if (s->thread_info.state == PA_SINK_SUSPENDED)
 680         return;
 681
 682     if (nbytes > 0)
 683         pa_log_debug("Processing rewind...");
 684
 685     while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) {
 686         pa_sink_input_assert_ref(i);
 687         pa_sink_input_process_rewind(i, nbytes);
 688     }
 689
 690     if (nbytes > 0)
 691         if (s->monitor_source && PA_SOURCE_IS_LINKED(s->monitor_source->thread_info.state))
 692             pa_source_process_rewind(s->monitor_source, nbytes);
 693 }
 694
 695 /* Called from IO thread context */
 696 static unsigned fill_mix_info(pa_sink *s, size_t *length, pa_mix_info *info, unsigned maxinfo) {
 697     pa_sink_input *i;
 698     unsigned n = 0;
 699     void *state = NULL;
 700     size_t mixlength = *length;
 701
 702     pa_sink_assert_ref(s);
 703     pa_assert(info);
 704
 705     while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)) && maxinfo > 0) {
 706         pa_sink_input_assert_ref(i);
 707
 708         pa_sink_input_peek(i, *length, &info->chunk, &info->volume);
 709
 710         if (mixlength == 0 || info->chunk.length < mixlength)
 711             mixlength = info->chunk.length;
 712
 713         if (pa_memblock_is_silence(info->chunk.memblock)) {
 714             pa_memblock_unref(info->chunk.memblock);
 715             continue;
 716         }
 717
 718         info->userdata = pa_sink_input_ref(i);
 719
 720         pa_assert(info->chunk.memblock);
 721         pa_assert(info->chunk.length > 0);
 722
 723         info++;
 724         n++;
 725         maxinfo--;
 726     }
 727
 728     if (mixlength > 0)
 729         *length = mixlength;
 730
 731     return n;
 732 }
 733
 734 /* Called from IO thread context */
 735 static void inputs_drop(pa_sink *s, pa_mix_info *info, unsigned n, pa_memchunk *result) {
 736     pa_sink_input *i;
 737     void *state = NULL;
 738     unsigned p = 0;
 739     unsigned n_unreffed = 0;
 740
 741     pa_sink_assert_ref(s);
 742     pa_assert(result);
 743     pa_assert(result->memblock);
 744     pa_assert(result->length > 0);
 745
 746     /* We optimize for the case where the order of the inputs has not changed */
 747
 748     while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) {
 749         unsigned j;
 750         pa_mix_info* m = NULL;
 751
 752         pa_sink_input_assert_ref(i);
 753
 754         /* Let's try to find the matching entry info the pa_mix_info array */
 755         for (j = 0; j < n; j ++) {
 756
 757             if (info[p].userdata == i) {
 758                 m = info + p;
 759                 break;
 760             }
 761
 762             p++;
 763             if (p >= n)
 764                 p = 0;
 765         }
 766
 767         /* Drop read data */
 768         pa_sink_input_drop(i, result->length);
 769
 770         if (s->monitor_source && PA_SOURCE_IS_LINKED(s->monitor_source->thread_info.state)) {
 771
 772             if (pa_hashmap_size(i->thread_info.direct_outputs) > 0) {
 773                 void *ostate = NULL;
 774                 pa_source_output *o;
 775                 pa_memchunk c;
 776
 777                 if (m && m->chunk.memblock) {
 778                     c = m->chunk;
 779                     pa_memblock_ref(c.memblock);
 780                     pa_assert(result->length <= c.length);
 781                     c.length = result->length;
 782
 783                     pa_memchunk_make_writable(&c, 0);
 784                     pa_volume_memchunk(&c, &s->sample_spec, &m->volume);
 785                 } else {
 786                     c = s->silence;
 787                     pa_memblock_ref(c.memblock);
 788                     pa_assert(result->length <= c.length);
 789                     c.length = result->length;
 790                 }
 791
 792                 while ((o = pa_hashmap_iterate(i->thread_info.direct_outputs, &ostate, NULL))) {
 793                     pa_source_output_assert_ref(o);
 794                     pa_assert(o->direct_on_input == i);
 795                     pa_source_post_direct(s->monitor_source, o, &c);
 796                 }
 797
 798                 pa_memblock_unref(c.memblock);
 799             }
 800         }
 801
 802         if (m) {
 803             if (m->chunk.memblock)
 804                 pa_memblock_unref(m->chunk.memblock);
 805                 pa_memchunk_reset(&m->chunk);
 806
 807             pa_sink_input_unref(m->userdata);
 808             m->userdata = NULL;
 809
 810             n_unreffed += 1;
 811         }
 812     }
 813
 814     /* Now drop references to entries that are included in the
 815      * pa_mix_info array but don't exist anymore */
 816
 817     if (n_unreffed < n) {
 818         for (; n > 0; info++, n--) {
 819             if (info->userdata)
 820                 pa_sink_input_unref(info->userdata);
 821             if (info->chunk.memblock)
 822                 pa_memblock_unref(info->chunk.memblock);
 823         }
 824     }
 825
 826     if (s->monitor_source && PA_SOURCE_IS_LINKED(s->monitor_source->thread_info.state))
 827         pa_source_post(s->monitor_source, result);
 828 }
 829
 830 /* Called from IO thread context */
 831 void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result) {
 832     pa_mix_info info[MAX_MIX_CHANNELS];
 833     unsigned n;
 834     size_t block_size_max;
 835
 836     pa_sink_assert_ref(s);
 837     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
 838     pa_assert(pa_frame_aligned(length, &s->sample_spec));
 839     pa_assert(result);
 840
 841     pa_sink_ref(s);
 842
 843     pa_assert(!s->thread_info.rewind_requested);
 844     pa_assert(s->thread_info.rewind_nbytes == 0);
 845
 846     if (s->thread_info.state == PA_SINK_SUSPENDED) {
 847         result->memblock = pa_memblock_ref(s->silence.memblock);
 848         result->index = s->silence.index;
 849         result->length = PA_MIN(s->silence.length, length);
 850         return;
 851     }
 852
 853     if (length <= 0)
 854         length = pa_frame_align(MIX_BUFFER_LENGTH, &s->sample_spec);
 855
 856     block_size_max = pa_mempool_block_size_max(s->core->mempool);
 857     if (length > block_size_max)
 858         length = pa_frame_align(block_size_max, &s->sample_spec);
 859
 860     pa_assert(length > 0);
 861
 862     n = fill_mix_info(s, &length, info, MAX_MIX_CHANNELS);
 863
 864     if (n == 0) {
 865
 866         *result = s->silence;
 867         pa_memblock_ref(result->memblock);
 868
 869         if (result->length > length)
 870             result->length = length;
 871
 872     } else if (n == 1) {
 873         pa_cvolume volume;
 874
 875         *result = info[0].chunk;
 876         pa_memblock_ref(result->memblock);
 877
 878         if (result->length > length)
 879             result->length = length;
 880
 881         pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume);
 882
 883         if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&volume)) {
 884             if (s->thread_info.soft_muted || pa_cvolume_is_muted(&volume)) {
 885                 pa_memblock_unref(result->memblock);
 886                 pa_silence_memchunk_get(&s->core->silence_cache,
 887                                         s->core->mempool,
 888                                         result,
 889                                         &s->sample_spec,
 890                                         result->length);
 891             } else {
 892                 pa_memchunk_make_writable(result, 0);
 893                 pa_volume_memchunk(result, &s->sample_spec, &volume);
 894             }
 895         }
 896     } else {
 897         void *ptr;
 898         result->memblock = pa_memblock_new(s->core->mempool, length);
 899
 900         ptr = pa_memblock_acquire(result->memblock);
 901         result->length = pa_mix(info, n,
 902                                 ptr, length,
 903                                 &s->sample_spec,
 904                                 &s->thread_info.soft_volume,
 905                                 s->thread_info.soft_muted);
 906         pa_memblock_release(result->memblock);
 907
 908         result->index = 0;
 909     }
 910
 911     inputs_drop(s, info, n, result);
 912
 913     pa_sink_unref(s);
 914 }
 915
 916 /* Called from IO thread context */
 917 void pa_sink_render_into(pa_sink*s, pa_memchunk *target) {
 918     pa_mix_info info[MAX_MIX_CHANNELS];
 919     unsigned n;
 920     size_t length, block_size_max;
 921
 922     pa_sink_assert_ref(s);
 923     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
 924     pa_assert(target);
 925     pa_assert(target->memblock);
 926     pa_assert(target->length > 0);
 927     pa_assert(pa_frame_aligned(target->length, &s->sample_spec));
 928
 929     pa_sink_ref(s);
 930
 931     pa_assert(!s->thread_info.rewind_requested);
 932     pa_assert(s->thread_info.rewind_nbytes == 0);
 933
 934     if (s->thread_info.state == PA_SINK_SUSPENDED) {
 935         pa_silence_memchunk(target, &s->sample_spec);
 936         return;
 937     }
 938
 939     length = target->length;
 940     block_size_max = pa_mempool_block_size_max(s->core->mempool);
 941     if (length > block_size_max)
 942         length = pa_frame_align(block_size_max, &s->sample_spec);
 943
 944     pa_assert(length > 0);
 945
 946     n = fill_mix_info(s, &length, info, MAX_MIX_CHANNELS);
 947
 948     if (n == 0) {
 949         if (target->length > length)
 950             target->length = length;
 951
 952         pa_silence_memchunk(target, &s->sample_spec);
 953     } else if (n == 1) {
 954         pa_cvolume volume;
 955
 956         if (target->length > length)
 957             target->length = length;
 958
 959         pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume);
 960
 961         if (s->thread_info.soft_muted || pa_cvolume_is_muted(&volume))
 962             pa_silence_memchunk(target, &s->sample_spec);
 963         else {
 964             pa_memchunk vchunk;
 965
 966             vchunk = info[0].chunk;
 967             pa_memblock_ref(vchunk.memblock);
 968
 969             if (vchunk.length > length)
 970                 vchunk.length = length;
 971
 972             if (!pa_cvolume_is_norm(&volume)) {
 973                 pa_memchunk_make_writable(&vchunk, 0);
 974                 pa_volume_memchunk(&vchunk, &s->sample_spec, &volume);
 975             }
 976
 977             pa_memchunk_memcpy(target, &vchunk);
 978             pa_memblock_unref(vchunk.memblock);
 979         }
 980
 981     } else {
 982         void *ptr;
 983
 984         ptr = pa_memblock_acquire(target->memblock);
 985
 986         target->length = pa_mix(info, n,
 987                                 (uint8_t*) ptr + target->index, length,
 988                                 &s->sample_spec,
 989                                 &s->thread_info.soft_volume,
 990                                 s->thread_info.soft_muted);
 991
 992         pa_memblock_release(target->memblock);
 993     }
 994
 995     inputs_drop(s, info, n, target);
 996
 997     pa_sink_unref(s);
 998 }
 999
1000 /* Called from IO thread context */
1001 void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target) {
1002     pa_memchunk chunk;
1003     size_t l, d;
1004
1005     pa_sink_assert_ref(s);
1006     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1007     pa_assert(target);
1008     pa_assert(target->memblock);
1009     pa_assert(target->length > 0);
1010     pa_assert(pa_frame_aligned(target->length, &s->sample_spec));
1011
1012     pa_sink_ref(s);
1013
1014     pa_assert(!s->thread_info.rewind_requested);
1015     pa_assert(s->thread_info.rewind_nbytes == 0);
1016
1017     l = target->length;
1018     d = 0;
1019     while (l > 0) {
1020         chunk = *target;
1021         chunk.index += d;
1022         chunk.length -= d;
1023
1024         pa_sink_render_into(s, &chunk);
1025
1026         d += chunk.length;
1027         l -= chunk.length;
1028     }
1029
1030     pa_sink_unref(s);
1031 }
1032
1033 /* Called from IO thread context */
1034 void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result) {
1035     pa_mix_info info[MAX_MIX_CHANNELS];
1036     size_t length1st = length;
1037     unsigned n;
1038
1039     pa_sink_assert_ref(s);
1040     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1041     pa_assert(length > 0);
1042     pa_assert(pa_frame_aligned(length, &s->sample_spec));
1043     pa_assert(result);
1044
1045     pa_sink_ref(s);
1046
1047     pa_assert(!s->thread_info.rewind_requested);
1048     pa_assert(s->thread_info.rewind_nbytes == 0);
1049
1050     pa_assert(length > 0);
1051
1052     n = fill_mix_info(s, &length1st, info, MAX_MIX_CHANNELS);
1053
1054     if (n == 0) {
1055         pa_silence_memchunk_get(&s->core->silence_cache,
1056                                 s->core->mempool,
1057                                 result,
1058                                 &s->sample_spec,
1059                                 length1st);
1060     } else if (n == 1) {
1061         pa_cvolume volume;
1062
1063         *result = info[0].chunk;
1064         pa_memblock_ref(result->memblock);
1065
1066         if (result->length > length)
1067             result->length = length;
1068
1069         pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume);
1070
1071         if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&volume)) {
1072             if (s->thread_info.soft_muted || pa_cvolume_is_muted(&volume)) {
1073                 pa_memblock_unref(result->memblock);
1074                 pa_silence_memchunk_get(&s->core->silence_cache,
1075                                         s->core->mempool,
1076                                         result,
1077                                         &s->sample_spec,
1078                                         result->length);
1079             } else {
1080                 pa_memchunk_make_writable(result, length);
1081                 pa_volume_memchunk(result, &s->sample_spec, &volume);
1082             }
1083         }
1084     } else {
1085         void *ptr;
1086
1087         result->index = 0;
1088         result->memblock = pa_memblock_new(s->core->mempool, length);
1089
1090         ptr = pa_memblock_acquire(result->memblock);
1091
1092         result->length = pa_mix(info, n,
1093                                 (uint8_t*) ptr + result->index, length1st,
1094                                 &s->sample_spec,
1095                                 &s->thread_info.soft_volume,
1096                                 s->thread_info.soft_muted);
1097
1098         pa_memblock_release(result->memblock);
1099     }
1100
1101     inputs_drop(s, info, n, result);
1102
1103     if (result->length < length) {
1104         pa_memchunk chunk;
1105         size_t l, d;
1106         pa_memchunk_make_writable(result, length);
1107
1108         l = length - result->length;
1109         d = result->index + result->length;
1110         while (l > 0) {
1111             chunk = *result;
1112             chunk.index = d;
1113             chunk.length = l;
1114
1115             pa_sink_render_into(s, &chunk);
1116
1117             d += chunk.length;
1118             l -= chunk.length;
1119         }
1120         result->length = length;
1121     }
1122
1123     pa_sink_unref(s);
1124 }
1125
1126 /* Called from main thread */
1127 pa_usec_t pa_sink_get_latency(pa_sink *s) {
1128     pa_usec_t usec = 0;
1129
1130     pa_sink_assert_ref(s);
1131     pa_assert(PA_SINK_IS_LINKED(s->state));
1132
1133     /* The returned value is supposed to be in the time domain of the sound card! */
1134
1135     if (s->state == PA_SINK_SUSPENDED)
1136         return 0;
1137
1138     if (!(s->flags & PA_SINK_LATENCY))
1139         return 0;
1140
1141     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
1142
1143     return usec;
1144 }
1145
1146 /* Called from IO thread */
1147 pa_usec_t pa_sink_get_latency_within_thread(pa_sink *s) {
1148     pa_usec_t usec = 0;
1149     pa_msgobject *o;
1150
1151     pa_sink_assert_ref(s);
1152     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1153
1154     /* The returned value is supposed to be in the time domain of the sound card! */
1155
1156     if (s->thread_info.state == PA_SINK_SUSPENDED)
1157         return 0;
1158
1159     if (!(s->flags & PA_SINK_LATENCY))
1160         return 0;
1161
1162     o = PA_MSGOBJECT(s);
1163
1164     /* We probably should make this a proper vtable callback instead of going through process_msg() */
1165
1166     if (o->process_msg(o, PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1167         return -1;
1168
1169     return usec;
1170 }
1171
1172 static void compute_new_soft_volume(pa_sink_input *i, const pa_cvolume *new_volume) {
1173     unsigned c;
1174
1175     pa_sink_input_assert_ref(i);
1176     pa_assert(new_volume->channels == i->sample_spec.channels);
1177
1178     /*
1179      * This basically calculates:
1180      *
1181      * i->relative_volume := i->virtual_volume / new_volume
1182      * i->soft_volume := i->relative_volume * i->volume_factor
1183      */
1184
1185     /* The new sink volume passed in here must already be remapped to
1186      * the sink input's channel map! */
1187
1188     i->soft_volume.channels = i->sample_spec.channels;
1189
1190     for (c = 0; c < i->sample_spec.channels; c++)
1191
1192         if (new_volume->values[c] <= PA_VOLUME_MUTED)
1193             /* We leave i->relative_volume untouched */
1194             i->soft_volume.values[c] = PA_VOLUME_MUTED;
1195         else {
1196             i->relative_volume[c] =
1197                 pa_sw_volume_to_linear(i->virtual_volume.values[c]) /
1198                 pa_sw_volume_to_linear(new_volume->values[c]);
1199
1200             i->soft_volume.values[c] = pa_sw_volume_from_linear(
1201                     i->relative_volume[c] *
1202                     pa_sw_volume_to_linear(i->volume_factor.values[c]));
1203         }
1204
1205     /* Hooks have the ability to play games with i->soft_volume */
1206     pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_SET_VOLUME], i);
1207
1208     /* We don't copy the soft_volume to the thread_info data
1209      * here. That must be done by the caller */
1210 }
1211
1212 /* Called from main thread */
1213 void pa_sink_update_flat_volume(pa_sink *s, pa_cvolume *new_volume) {
1214     pa_sink_input *i;
1215     uint32_t idx;
1216
1217     pa_sink_assert_ref(s);
1218     pa_assert(new_volume);
1219     pa_assert(PA_SINK_IS_LINKED(s->state));
1220     pa_assert(s->flags & PA_SINK_FLAT_VOLUME);
1221
1222     /* This is called whenever a sink input volume changes or a sink
1223      * input is added/removed and we might need to fix up the sink
1224      * volume accordingly. Please note that we don't actually update
1225      * the sinks volume here, we only return how it needs to be
1226      * updated. The caller should then call pa_sink_set_volume().*/
1227
1228     if (pa_idxset_isempty(s->inputs)) {
1229         /* In the special case that we have no sink input we leave the
1230          * volume unmodified. */
1231         *new_volume = s->reference_volume;
1232         return;
1233     }
1234
1235     pa_cvolume_mute(new_volume, s->channel_map.channels);
1236
1237     /* First let's determine the new maximum volume of all inputs
1238      * connected to this sink */
1239     for (i = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); i; i = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx))) {
1240         unsigned c;
1241         pa_cvolume remapped_volume;
1242
1243         remapped_volume = i->virtual_volume;
1244         pa_cvolume_remap(&remapped_volume, &i->channel_map, &s->channel_map);
1245
1246         for (c = 0; c < new_volume->channels; c++)
1247             if (remapped_volume.values[c] > new_volume->values[c])
1248                 new_volume->values[c] = remapped_volume.values[c];
1249     }
1250
1251     /* Then, let's update the soft volumes of all inputs connected
1252      * to this sink */
1253     for (i = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); i; i = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx))) {
1254         pa_cvolume remapped_new_volume;
1255
1256         remapped_new_volume = *new_volume;
1257         pa_cvolume_remap(&remapped_new_volume, &s->channel_map, &i->channel_map);
1258         compute_new_soft_volume(i, &remapped_new_volume);
1259
1260         /* We don't copy soft_volume to the thread_info data here
1261          * (i.e. issue PA_SINK_INPUT_MESSAGE_SET_VOLUME) because we
1262          * want the update to be atomically with the sink volume
1263          * update, hence we do it within the pa_sink_set_volume() call
1264          * below */
1265     }
1266 }
1267
1268 /* Called from main thread */
1269 void pa_sink_propagate_flat_volume(pa_sink *s) {
1270     pa_sink_input *i;
1271     uint32_t idx;
1272
1273     pa_sink_assert_ref(s);
1274     pa_assert(PA_SINK_IS_LINKED(s->state));
1275     pa_assert(s->flags & PA_SINK_FLAT_VOLUME);
1276
1277     /* This is called whenever the sink volume changes that is not
1278      * caused by a sink input volume change. We need to fix up the
1279      * sink input volumes accordingly */
1280
1281     for (i = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); i; i = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx))) {
1282         pa_cvolume sink_volume, new_virtual_volume;
1283         unsigned c;
1284
1285         /* This basically calculates i->virtual_volume := i->relative_volume * s->virtual_volume  */
1286
1287         sink_volume = s->virtual_volume;
1288         pa_cvolume_remap(&sink_volume, &s->channel_map, &i->channel_map);
1289
1290         for (c = 0; c < i->sample_spec.channels; c++)
1291             new_virtual_volume.values[c] = pa_sw_volume_from_linear(
1292                     i->relative_volume[c] *
1293                     pa_sw_volume_to_linear(sink_volume.values[c]));
1294
1295         new_virtual_volume.channels = i->sample_spec.channels;
1296
1297         if (!pa_cvolume_equal(&new_virtual_volume, &i->virtual_volume)) {
1298             i->virtual_volume = new_virtual_volume;
1299
1300             /* Hmm, the soft volume might no longer actually match
1301              * what has been chosen as new virtual volume here,
1302              * especially when the old volume was
1303              * PA_VOLUME_MUTED. Hence let's recalculate the soft
1304              * volumes here. */
1305             compute_new_soft_volume(i, &sink_volume);
1306
1307             /* The virtual volume changed, let's tell people so */
1308             pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
1309         }
1310     }
1311
1312     /* If the soft_volume of any of the sink inputs got changed, let's
1313      * make sure the thread copies are synced up. */
1314     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SYNC_VOLUMES, NULL, 0, NULL) == 0);
1315 }
1316
1317 /* Called from main thread */
1318 void pa_sink_set_volume(pa_sink *s, const pa_cvolume *volume, pa_bool_t propagate, pa_bool_t sendmsg, pa_bool_t become_reference, pa_bool_t save) {
1319     pa_bool_t virtual_volume_changed;
1320
1321     pa_sink_assert_ref(s);
1322     pa_assert(PA_SINK_IS_LINKED(s->state));
1323     pa_assert(volume);
1324     pa_assert(pa_cvolume_valid(volume));
1325     pa_assert(pa_cvolume_compatible(volume, &s->sample_spec));
1326
1327     virtual_volume_changed = !pa_cvolume_equal(volume, &s->virtual_volume);
1328     s->virtual_volume = *volume;
1329     s->save_volume = (!virtual_volume_changed && s->save_volume) || save;
1330
1331     if (become_reference)
1332         s->reference_volume = s->virtual_volume;
1333
1334     /* Propagate this volume change back to the inputs */
1335     if (virtual_volume_changed)
1336         if (propagate && (s->flags & PA_SINK_FLAT_VOLUME))
1337             pa_sink_propagate_flat_volume(s);
1338
1339     if (s->set_volume) {
1340         /* If we have a function set_volume(), then we do not apply a
1341          * soft volume by default. However, set_volume() is free to
1342          * apply one to s->soft_volume */
1343
1344         pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
1345         s->set_volume(s);
1346
1347     } else
1348         /* If we have no function set_volume(), then the soft volume
1349          * becomes the virtual volume */
1350         s->soft_volume = s->virtual_volume;
1351
1352     /* This tells the sink that soft and/or virtual volume changed */
1353     if (sendmsg)
1354         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1355
1356     if (virtual_volume_changed)
1357         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1358 }
1359
1360 /* Called from main thread. Only to be called by sink implementor */
1361 void pa_sink_set_soft_volume(pa_sink *s, const pa_cvolume *volume) {
1362     pa_sink_assert_ref(s);
1363     pa_assert(volume);
1364
1365     s->soft_volume = *volume;
1366
1367     if (PA_SINK_IS_LINKED(s->state))
1368         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
1369     else
1370         s->thread_info.soft_volume = *volume;
1371 }
1372
1373 /* Called from main thread */
1374 const pa_cvolume *pa_sink_get_volume(pa_sink *s, pa_bool_t force_refresh, pa_bool_t reference) {
1375     pa_sink_assert_ref(s);
1376
1377     if (s->refresh_volume || force_refresh) {
1378         struct pa_cvolume old_virtual_volume = s->virtual_volume;
1379
1380         if (s->get_volume)
1381             s->get_volume(s);
1382
1383         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
1384
1385         if (!pa_cvolume_equal(&old_virtual_volume, &s->virtual_volume)) {
1386
1387             s->reference_volume = s->virtual_volume;
1388
1389             if (s->flags & PA_SINK_FLAT_VOLUME)
1390                 pa_sink_propagate_flat_volume(s);
1391
1392             pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1393         }
1394     }
1395
1396     return reference ? &s->reference_volume : &s->virtual_volume;
1397 }
1398
1399 /* Called from main thread */
1400 void pa_sink_volume_changed(pa_sink *s, const pa_cvolume *new_volume, pa_bool_t save) {
1401     pa_sink_assert_ref(s);
1402
1403     /* The sink implementor may call this if the volume changed to make sure everyone is notified */
1404     if (pa_cvolume_equal(&s->virtual_volume, new_volume)) {
1405         s->save_volume = s->save_volume || save;
1406         return;
1407     }
1408
1409     s->reference_volume = s->virtual_volume = *new_volume;
1410     s->save_volume = save;
1411
1412     if (s->flags & PA_SINK_FLAT_VOLUME)
1413         pa_sink_propagate_flat_volume(s);
1414
1415     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1416 }
1417
1418 /* Called from main thread */
1419 void pa_sink_set_mute(pa_sink *s, pa_bool_t mute, pa_bool_t save) {
1420     pa_bool_t old_muted;
1421
1422     pa_sink_assert_ref(s);
1423     pa_assert(PA_SINK_IS_LINKED(s->state));
1424
1425     old_muted = s->muted;
1426     s->muted = mute;
1427     s->save_muted = (old_muted == s->muted && s->save_muted) || save;
1428
1429     if (s->set_mute)
1430         s->set_mute(s);
1431
1432     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1433
1434     if (old_muted != s->muted)
1435         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1436 }
1437
1438 /* Called from main thread */
1439 pa_bool_t pa_sink_get_mute(pa_sink *s, pa_bool_t force_refresh) {
1440
1441     pa_sink_assert_ref(s);
1442
1443     if (s->refresh_muted || force_refresh) {
1444         pa_bool_t old_muted = s->muted;
1445
1446         if (s->get_mute)
1447             s->get_mute(s);
1448
1449         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MUTE, NULL, 0, NULL) == 0);
1450
1451         if (old_muted != s->muted) {
1452             pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1453
1454             /* Make sure the soft mute status stays in sync */
1455             pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
1456         }
1457     }
1458
1459     return s->muted;
1460 }
1461
1462 /* Called from main thread */
1463 void pa_sink_mute_changed(pa_sink *s, pa_bool_t new_muted, pa_bool_t save) {
1464     pa_sink_assert_ref(s);
1465
1466     /* The sink implementor may call this if the volume changed to make sure everyone is notified */
1467
1468     if (s->muted == new_muted) {
1469         s->save_muted = s->save_muted || save;
1470         return;
1471     }
1472
1473     s->muted = new_muted;
1474     s->save_muted = save;
1475
1476     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1477 }
1478
1479 /* Called from main thread */
1480 pa_bool_t pa_sink_update_proplist(pa_sink *s, pa_update_mode_t mode, pa_proplist *p) {
1481     pa_sink_assert_ref(s);
1482
1483     if (p)
1484         pa_proplist_update(s->proplist, mode, p);
1485
1486     if (PA_SINK_IS_LINKED(s->state)) {
1487         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PROPLIST_CHANGED], s);
1488         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1489     }
1490
1491     return TRUE;
1492 }
1493
1494 /* Called from main thread */
1495 void pa_sink_set_description(pa_sink *s, const char *description) {
1496     const char *old;
1497     pa_sink_assert_ref(s);
1498
1499     if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
1500         return;
1501
1502     old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1503
1504     if (old && description && !strcmp(old, description))
1505         return;
1506
1507     if (description)
1508         pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
1509     else
1510         pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
1511
1512     if (s->monitor_source) {
1513         char *n;
1514
1515         n = pa_sprintf_malloc("Monitor Source of %s", description ? description : s->name);
1516         pa_source_set_description(s->monitor_source, n);
1517         pa_xfree(n);
1518     }
1519
1520     if (PA_SINK_IS_LINKED(s->state)) {
1521         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
1522         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PROPLIST_CHANGED], s);
1523     }
1524 }
1525
1526 /* Called from main thread */
1527 unsigned pa_sink_linked_by(pa_sink *s) {
1528     unsigned ret;
1529
1530     pa_sink_assert_ref(s);
1531     pa_assert(PA_SINK_IS_LINKED(s->state));
1532
1533     ret = pa_idxset_size(s->inputs);
1534
1535     /* We add in the number of streams connected to us here. Please
1536      * note the asymmmetry to pa_sink_used_by()! */
1537
1538     if (s->monitor_source)
1539         ret += pa_source_linked_by(s->monitor_source);
1540
1541     return ret;
1542 }
1543
1544 /* Called from main thread */
1545 unsigned pa_sink_used_by(pa_sink *s) {
1546     unsigned ret;
1547
1548     pa_sink_assert_ref(s);
1549     pa_assert(PA_SINK_IS_LINKED(s->state));
1550
1551     ret = pa_idxset_size(s->inputs);
1552     pa_assert(ret >= s->n_corked);
1553
1554     /* Streams connected to our monitor source do not matter for
1555      * pa_sink_used_by()!.*/
1556
1557     return ret - s->n_corked;
1558 }
1559
1560 /* Called from main thread */
1561 unsigned pa_sink_check_suspend(pa_sink *s) {
1562     unsigned ret;
1563     pa_sink_input *i;
1564     uint32_t idx;
1565
1566     pa_sink_assert_ref(s);
1567
1568     if (!PA_SINK_IS_LINKED(s->state))
1569         return 0;
1570
1571     ret = 0;
1572
1573     PA_IDXSET_FOREACH(i, s->inputs, idx) {
1574         pa_sink_input_state_t st;
1575
1576         st = pa_sink_input_get_state(i);
1577         pa_assert(PA_SINK_INPUT_IS_LINKED(st));
1578
1579         if (st == PA_SINK_INPUT_CORKED)
1580             continue;
1581
1582         if (i->flags & PA_SINK_INPUT_DONT_INHIBIT_AUTO_SUSPEND)
1583             continue;
1584
1585         ret ++;
1586     }
1587
1588     if (s->monitor_source)
1589         ret += pa_source_check_suspend(s->monitor_source);
1590
1591     return ret;
1592 }
1593
1594 /* Called from the IO thread */
1595 static void sync_input_volumes_within_thread(pa_sink *s) {
1596     pa_sink_input *i;
1597     void *state = NULL;
1598
1599     pa_sink_assert_ref(s);
1600
1601     while ((i = PA_SINK_INPUT(pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)))) {
1602         if (pa_cvolume_equal(&i->thread_info.soft_volume, &i->soft_volume))
1603             continue;
1604
1605         i->thread_info.soft_volume = i->soft_volume;
1606         pa_sink_input_request_rewind(i, 0, TRUE, FALSE, FALSE);
1607     }
1608 }
1609
1610 /* Called from IO thread, except when it is not */
1611 int pa_sink_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1612     pa_sink *s = PA_SINK(o);
1613     pa_sink_assert_ref(s);
1614
1615     switch ((pa_sink_message_t) code) {
1616
1617         case PA_SINK_MESSAGE_ADD_INPUT: {
1618             pa_sink_input *i = PA_SINK_INPUT(userdata);
1619
1620             /* If you change anything here, make sure to change the
1621              * sink input handling a few lines down at
1622              * PA_SINK_MESSAGE_FINISH_MOVE, too. */
1623
1624             pa_hashmap_put(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index), pa_sink_input_ref(i));
1625
1626             /* Since the caller sleeps in pa_sink_input_put(), we can
1627              * safely access data outside of thread_info even though
1628              * it is mutable */
1629
1630             if ((i->thread_info.sync_prev = i->sync_prev)) {
1631                 pa_assert(i->sink == i->thread_info.sync_prev->sink);
1632                 pa_assert(i->sync_prev->sync_next == i);
1633                 i->thread_info.sync_prev->thread_info.sync_next = i;
1634             }
1635
1636             if ((i->thread_info.sync_next = i->sync_next)) {
1637                 pa_assert(i->sink == i->thread_info.sync_next->sink);
1638                 pa_assert(i->sync_next->sync_prev == i);
1639                 i->thread_info.sync_next->thread_info.sync_prev = i;
1640             }
1641
1642             pa_assert(!i->thread_info.attached);
1643             i->thread_info.attached = TRUE;
1644
1645             if (i->attach)
1646                 i->attach(i);
1647
1648             pa_sink_input_set_state_within_thread(i, i->state);
1649
1650             /* The requested latency of the sink input needs to be
1651              * fixed up and then configured on the sink */
1652
1653             if (i->thread_info.requested_sink_latency != (pa_usec_t) -1)
1654                 pa_sink_input_set_requested_latency_within_thread(i, i->thread_info.requested_sink_latency);
1655
1656             pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind);
1657             pa_sink_input_update_max_request(i, s->thread_info.max_request);
1658
1659             /* We don't rewind here automatically. This is left to the
1660              * sink input implementor because some sink inputs need a
1661              * slow start, i.e. need some time to buffer client
1662              * samples before beginning streaming. */
1663
1664             /* In flat volume mode we need to update the volume as
1665              * well */
1666             return o->process_msg(o, PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL);
1667         }
1668
1669         case PA_SINK_MESSAGE_REMOVE_INPUT: {
1670             pa_sink_input *i = PA_SINK_INPUT(userdata);
1671
1672             /* If you change anything here, make sure to change the
1673              * sink input handling a few lines down at
1674              * PA_SINK_MESSAGE_PREPAPRE_MOVE, too. */
1675
1676             if (i->detach)
1677                 i->detach(i);
1678
1679             pa_sink_input_set_state_within_thread(i, i->state);
1680
1681             pa_assert(i->thread_info.attached);
1682             i->thread_info.attached = FALSE;
1683
1684             /* Since the caller sleeps in pa_sink_input_unlink(),
1685              * we can safely access data outside of thread_info even
1686              * though it is mutable */
1687
1688             pa_assert(!i->sync_prev);
1689             pa_assert(!i->sync_next);
1690
1691             if (i->thread_info.sync_prev) {
1692                 i->thread_info.sync_prev->thread_info.sync_next = i->thread_info.sync_prev->sync_next;
1693                 i->thread_info.sync_prev = NULL;
1694             }
1695
1696             if (i->thread_info.sync_next) {
1697                 i->thread_info.sync_next->thread_info.sync_prev = i->thread_info.sync_next->sync_prev;
1698                 i->thread_info.sync_next = NULL;
1699             }
1700
1701             if (pa_hashmap_remove(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index)))
1702                 pa_sink_input_unref(i);
1703
1704             pa_sink_invalidate_requested_latency(s);
1705             pa_sink_request_rewind(s, (size_t) -1);
1706
1707             /* In flat volume mode we need to update the volume as
1708              * well */
1709             return o->process_msg(o, PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL);
1710         }
1711
1712         case PA_SINK_MESSAGE_START_MOVE: {
1713             pa_sink_input *i = PA_SINK_INPUT(userdata);
1714
1715             /* We don't support moving synchronized streams. */
1716             pa_assert(!i->sync_prev);
1717             pa_assert(!i->sync_next);
1718             pa_assert(!i->thread_info.sync_next);
1719             pa_assert(!i->thread_info.sync_prev);
1720
1721             if (i->thread_info.state != PA_SINK_INPUT_CORKED) {
1722                 pa_usec_t usec = 0;
1723                 size_t sink_nbytes, total_nbytes;
1724
1725                 /* Get the latency of the sink */
1726                 if (!(s->flags & PA_SINK_LATENCY) ||
1727                     PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1728                     usec = 0;
1729
1730                 sink_nbytes = pa_usec_to_bytes(usec, &s->sample_spec);
1731                 total_nbytes = sink_nbytes + pa_memblockq_get_length(i->thread_info.render_memblockq);
1732
1733                 if (total_nbytes > 0) {
1734                     i->thread_info.rewrite_nbytes = i->thread_info.resampler ? pa_resampler_request(i->thread_info.resampler, total_nbytes) : total_nbytes;
1735                     i->thread_info.rewrite_flush = TRUE;
1736                     pa_sink_input_process_rewind(i, sink_nbytes);
1737                 }
1738             }
1739
1740             if (i->detach)
1741                 i->detach(i);
1742
1743             pa_assert(i->thread_info.attached);
1744             i->thread_info.attached = FALSE;
1745
1746             /* Let's remove the sink input ...*/
1747             if (pa_hashmap_remove(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index)))
1748                 pa_sink_input_unref(i);
1749
1750             pa_sink_invalidate_requested_latency(s);
1751
1752             pa_log_debug("Requesting rewind due to started move");
1753             pa_sink_request_rewind(s, (size_t) -1);
1754
1755             /* In flat volume mode we need to update the volume as
1756              * well */
1757             return o->process_msg(o, PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL);
1758         }
1759
1760         case PA_SINK_MESSAGE_FINISH_MOVE: {
1761             pa_sink_input *i = PA_SINK_INPUT(userdata);
1762
1763             /* We don't support moving synchronized streams. */
1764             pa_assert(!i->sync_prev);
1765             pa_assert(!i->sync_next);
1766             pa_assert(!i->thread_info.sync_next);
1767             pa_assert(!i->thread_info.sync_prev);
1768
1769             pa_hashmap_put(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index), pa_sink_input_ref(i));
1770
1771             pa_assert(!i->thread_info.attached);
1772             i->thread_info.attached = TRUE;
1773
1774             if (i->attach)
1775                 i->attach(i);
1776
1777             if (i->thread_info.requested_sink_latency != (pa_usec_t) -1)
1778                 pa_sink_input_set_requested_latency_within_thread(i, i->thread_info.requested_sink_latency);
1779
1780             pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind);
1781             pa_sink_input_update_max_request(i, s->thread_info.max_request);
1782
1783             if (i->thread_info.state != PA_SINK_INPUT_CORKED) {
1784                 pa_usec_t usec = 0;
1785                 size_t nbytes;
1786
1787                 /* Get the latency of the sink */
1788                 if (!(s->flags & PA_SINK_LATENCY) ||
1789                     PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
1790                     usec = 0;
1791
1792                 nbytes = pa_usec_to_bytes(usec, &s->sample_spec);
1793
1794                 if (nbytes > 0)
1795                     pa_sink_input_drop(i, nbytes);
1796
1797                 pa_log_debug("Requesting rewind due to finished move");
1798                 pa_sink_request_rewind(s, nbytes);
1799             }
1800
1801             /* In flat volume mode we need to update the volume as
1802              * well */
1803             return o->process_msg(o, PA_SINK_MESSAGE_SET_VOLUME, NULL, 0, NULL);
1804         }
1805
1806         case PA_SINK_MESSAGE_SET_VOLUME:
1807
1808             if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
1809                 s->thread_info.soft_volume = s->soft_volume;
1810                 pa_sink_request_rewind(s, (size_t) -1);
1811             }
1812
1813             if (!(s->flags & PA_SINK_FLAT_VOLUME))
1814                 return 0;
1815
1816             /* Fall through ... */
1817
1818         case PA_SINK_MESSAGE_SYNC_VOLUMES:
1819             sync_input_volumes_within_thread(s);
1820             return 0;
1821
1822         case PA_SINK_MESSAGE_GET_VOLUME:
1823             return 0;
1824
1825         case PA_SINK_MESSAGE_SET_MUTE:
1826
1827             if (s->thread_info.soft_muted != s->muted) {
1828                 s->thread_info.soft_muted = s->muted;
1829                 pa_sink_request_rewind(s, (size_t) -1);
1830             }
1831
1832             return 0;
1833
1834         case PA_SINK_MESSAGE_GET_MUTE:
1835             return 0;
1836
1837         case PA_SINK_MESSAGE_SET_STATE: {
1838
1839             pa_bool_t suspend_change =
1840                 (s->thread_info.state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(PA_PTR_TO_UINT(userdata))) ||
1841                 (PA_SINK_IS_OPENED(s->thread_info.state) && PA_PTR_TO_UINT(userdata) == PA_SINK_SUSPENDED);
1842
1843             s->thread_info.state = PA_PTR_TO_UINT(userdata);
1844
1845             if (s->thread_info.state == PA_SINK_SUSPENDED) {
1846                 s->thread_info.rewind_nbytes = 0;
1847                 s->thread_info.rewind_requested = FALSE;
1848             }
1849
1850             if (suspend_change) {
1851                 pa_sink_input *i;
1852                 void *state = NULL;
1853
1854                 while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)))
1855                     if (i->suspend_within_thread)
1856                         i->suspend_within_thread(i, s->thread_info.state == PA_SINK_SUSPENDED);
1857             }
1858
1859             return 0;
1860         }
1861
1862         case PA_SINK_MESSAGE_DETACH:
1863
1864             /* Detach all streams */
1865             pa_sink_detach_within_thread(s);
1866             return 0;
1867
1868         case PA_SINK_MESSAGE_ATTACH:
1869
1870             /* Reattach all streams */
1871             pa_sink_attach_within_thread(s);
1872             return 0;
1873
1874         case PA_SINK_MESSAGE_GET_REQUESTED_LATENCY: {
1875
1876             pa_usec_t *usec = userdata;
1877             *usec = pa_sink_get_requested_latency_within_thread(s);
1878
1879             if (*usec == (pa_usec_t) -1)
1880                 *usec = s->thread_info.max_latency;
1881
1882             return 0;
1883         }
1884
1885         case PA_SINK_MESSAGE_SET_LATENCY_RANGE: {
1886             pa_usec_t *r = userdata;
1887
1888             pa_sink_set_latency_range_within_thread(s, r[0], r[1]);
1889
1890             return 0;
1891         }
1892
1893         case PA_SINK_MESSAGE_GET_LATENCY_RANGE: {
1894             pa_usec_t *r = userdata;
1895
1896             r[0] = s->thread_info.min_latency;
1897             r[1] = s->thread_info.max_latency;
1898
1899             return 0;
1900         }
1901
1902         case PA_SINK_MESSAGE_GET_MAX_REWIND:
1903
1904             *((size_t*) userdata) = s->thread_info.max_rewind;
1905             return 0;
1906
1907         case PA_SINK_MESSAGE_GET_MAX_REQUEST:
1908
1909             *((size_t*) userdata) = s->thread_info.max_request;
1910             return 0;
1911
1912         case PA_SINK_MESSAGE_SET_MAX_REWIND:
1913
1914             pa_sink_set_max_rewind_within_thread(s, (size_t) offset);
1915             return 0;
1916
1917         case PA_SINK_MESSAGE_SET_MAX_REQUEST:
1918
1919             pa_sink_set_max_request_within_thread(s, (size_t) offset);
1920             return 0;
1921
1922         case PA_SINK_MESSAGE_GET_LATENCY:
1923         case PA_SINK_MESSAGE_MAX:
1924             ;
1925     }
1926
1927     return -1;
1928 }
1929
1930 /* Called from main thread */
1931 int pa_sink_suspend_all(pa_core *c, pa_bool_t suspend, pa_suspend_cause_t cause) {
1932     pa_sink *sink;
1933     uint32_t idx;
1934     int ret = 0;
1935
1936     pa_core_assert_ref(c);
1937     pa_assert(cause != 0);
1938
1939     for (sink = PA_SINK(pa_idxset_first(c->sinks, &idx)); sink; sink = PA_SINK(pa_idxset_next(c->sinks, &idx))) {
1940         int r;
1941
1942         if ((r = pa_sink_suspend(sink, suspend, cause)) < 0)
1943             ret = r;
1944     }
1945
1946     return ret;
1947 }
1948
1949 /* Called from main thread */
1950 void pa_sink_detach(pa_sink *s) {
1951     pa_sink_assert_ref(s);
1952     pa_assert(PA_SINK_IS_LINKED(s->state));
1953
1954     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_DETACH, NULL, 0, NULL) == 0);
1955 }
1956
1957 /* Called from main thread */
1958 void pa_sink_attach(pa_sink *s) {
1959     pa_sink_assert_ref(s);
1960     pa_assert(PA_SINK_IS_LINKED(s->state));
1961
1962     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
1963 }
1964
1965 /* Called from IO thread */
1966 void pa_sink_detach_within_thread(pa_sink *s) {
1967     pa_sink_input *i;
1968     void *state = NULL;
1969
1970     pa_sink_assert_ref(s);
1971     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1972
1973     while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)))
1974         if (i->detach)
1975             i->detach(i);
1976
1977     if (s->monitor_source)
1978         pa_source_detach_within_thread(s->monitor_source);
1979 }
1980
1981 /* Called from IO thread */
1982 void pa_sink_attach_within_thread(pa_sink *s) {
1983     pa_sink_input *i;
1984     void *state = NULL;
1985
1986     pa_sink_assert_ref(s);
1987     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
1988
1989     while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)))
1990         if (i->attach)
1991             i->attach(i);
1992
1993     if (s->monitor_source)
1994         pa_source_attach_within_thread(s->monitor_source);
1995 }
1996
1997 /* Called from IO thread */
1998 void pa_sink_request_rewind(pa_sink*s, size_t nbytes) {
1999     pa_sink_assert_ref(s);
2000     pa_assert(PA_SINK_IS_LINKED(s->thread_info.state));
2001
2002     if (s->thread_info.state == PA_SINK_SUSPENDED)
2003         return;
2004
2005     if (nbytes == (size_t) -1)
2006         nbytes = s->thread_info.max_rewind;
2007
2008     nbytes = PA_MIN(nbytes, s->thread_info.max_rewind);
2009
2010     if (s->thread_info.rewind_requested &&
2011         nbytes <= s->thread_info.rewind_nbytes)
2012         return;
2013
2014     s->thread_info.rewind_nbytes = nbytes;
2015     s->thread_info.rewind_requested = TRUE;
2016
2017     if (s->request_rewind)
2018         s->request_rewind(s);
2019 }
2020
2021 /* Called from IO thread */
2022 pa_usec_t pa_sink_get_requested_latency_within_thread(pa_sink *s) {
2023     pa_usec_t result = (pa_usec_t) -1;
2024     pa_sink_input *i;
2025     void *state = NULL;
2026     pa_usec_t monitor_latency;
2027
2028     pa_sink_assert_ref(s);
2029
2030     if (!(s->flags & PA_SINK_DYNAMIC_LATENCY))
2031         return PA_CLAMP(s->fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
2032
2033     if (s->thread_info.requested_latency_valid)
2034         return s->thread_info.requested_latency;
2035
2036     while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)))
2037
2038         if (i->thread_info.requested_sink_latency != (pa_usec_t) -1 &&
2039             (result == (pa_usec_t) -1 || result > i->thread_info.requested_sink_latency))
2040             result = i->thread_info.requested_sink_latency;
2041
2042     monitor_latency = pa_source_get_requested_latency_within_thread(s->monitor_source);
2043
2044     if (monitor_latency != (pa_usec_t) -1 &&
2045         (result == (pa_usec_t) -1 || result > monitor_latency))
2046         result = monitor_latency;
2047
2048     if (result != (pa_usec_t) -1)
2049         result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
2050
2051     if (PA_SINK_IS_LINKED(s->thread_info.state)) {
2052         /* Only cache if properly initialized */
2053         s->thread_info.requested_latency = result;
2054         s->thread_info.requested_latency_valid = TRUE;
2055     }
2056
2057     return result;
2058 }
2059
2060 /* Called from main thread */
2061 pa_usec_t pa_sink_get_requested_latency(pa_sink *s) {
2062     pa_usec_t usec = 0;
2063
2064     pa_sink_assert_ref(s);
2065     pa_assert(PA_SINK_IS_LINKED(s->state));
2066
2067     if (s->state == PA_SINK_SUSPENDED)
2068         return 0;
2069
2070     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
2071     return usec;
2072 }
2073
2074 /* Called from IO as well as the main thread -- the latter only before the IO thread started up */
2075 void pa_sink_set_max_rewind_within_thread(pa_sink *s, size_t max_rewind) {
2076     pa_sink_input *i;
2077     void *state = NULL;
2078
2079     pa_sink_assert_ref(s);
2080
2081     if (max_rewind == s->thread_info.max_rewind)
2082         return;
2083
2084     s->thread_info.max_rewind = max_rewind;
2085
2086     if (PA_SINK_IS_LINKED(s->thread_info.state)) {
2087         while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)))
2088             pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind);
2089     }
2090
2091     if (s->monitor_source)
2092         pa_source_set_max_rewind_within_thread(s->monitor_source, s->thread_info.max_rewind);
2093 }
2094
2095 /* Called from main thread */
2096 void pa_sink_set_max_rewind(pa_sink *s, size_t max_rewind) {
2097     pa_sink_assert_ref(s);
2098
2099     if (PA_SINK_IS_LINKED(s->state))
2100         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
2101     else
2102         pa_sink_set_max_rewind_within_thread(s, max_rewind);
2103 }
2104
2105 /* Called from IO as well as the main thread -- the latter only before the IO thread started up */
2106 void pa_sink_set_max_request_within_thread(pa_sink *s, size_t max_request) {
2107     void *state = NULL;
2108
2109     pa_sink_assert_ref(s);
2110
2111     if (max_request == s->thread_info.max_request)
2112         return;
2113
2114     s->thread_info.max_request = max_request;
2115
2116     if (PA_SINK_IS_LINKED(s->thread_info.state)) {
2117         pa_sink_input *i;
2118
2119         while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)))
2120             pa_sink_input_update_max_request(i, s->thread_info.max_request);
2121     }
2122 }
2123
2124 /* Called from main thread */
2125 void pa_sink_set_max_request(pa_sink *s, size_t max_request) {
2126     pa_sink_assert_ref(s);
2127
2128     if (PA_SINK_IS_LINKED(s->state))
2129         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MAX_REQUEST, NULL, max_request, NULL) == 0);
2130     else
2131         pa_sink_set_max_request_within_thread(s, max_request);
2132 }
2133
2134 /* Called from IO thread */
2135 void pa_sink_invalidate_requested_latency(pa_sink *s) {
2136     pa_sink_input *i;
2137     void *state = NULL;
2138
2139     pa_sink_assert_ref(s);
2140
2141     if (!(s->flags & PA_SINK_DYNAMIC_LATENCY))
2142         return;
2143
2144     s->thread_info.requested_latency_valid = FALSE;
2145
2146     if (PA_SINK_IS_LINKED(s->thread_info.state)) {
2147
2148         if (s->update_requested_latency)
2149             s->update_requested_latency(s);
2150
2151         while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)))
2152             if (i->update_sink_requested_latency)
2153                 i->update_sink_requested_latency(i);
2154     }
2155 }
2156
2157 /* Called from main thread */
2158 void pa_sink_set_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2159     pa_sink_assert_ref(s);
2160
2161     /* min_latency == 0:           no limit
2162      * min_latency anything else:  specified limit
2163      *
2164      * Similar for max_latency */
2165
2166     if (min_latency < ABSOLUTE_MIN_LATENCY)
2167         min_latency = ABSOLUTE_MIN_LATENCY;
2168
2169     if (max_latency <= 0 ||
2170         max_latency > ABSOLUTE_MAX_LATENCY)
2171         max_latency = ABSOLUTE_MAX_LATENCY;
2172
2173     pa_assert(min_latency <= max_latency);
2174
2175     /* Hmm, let's see if someone forgot to set PA_SINK_DYNAMIC_LATENCY here... */
2176     pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2177                max_latency == ABSOLUTE_MAX_LATENCY) ||
2178               (s->flags & PA_SINK_DYNAMIC_LATENCY));
2179
2180     if (PA_SINK_IS_LINKED(s->state)) {
2181         pa_usec_t r[2];
2182
2183         r[0] = min_latency;
2184         r[1] = max_latency;
2185
2186         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
2187     } else
2188         pa_sink_set_latency_range_within_thread(s, min_latency, max_latency);
2189 }
2190
2191 /* Called from main thread */
2192 void pa_sink_get_latency_range(pa_sink *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
2193    pa_sink_assert_ref(s);
2194    pa_assert(min_latency);
2195    pa_assert(max_latency);
2196
2197    if (PA_SINK_IS_LINKED(s->state)) {
2198        pa_usec_t r[2] = { 0, 0 };
2199
2200        pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
2201
2202        *min_latency = r[0];
2203        *max_latency = r[1];
2204    } else {
2205        *min_latency = s->thread_info.min_latency;
2206        *max_latency = s->thread_info.max_latency;
2207    }
2208 }
2209
2210 /* Called from IO thread */
2211 void pa_sink_set_latency_range_within_thread(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency) {
2212     void *state = NULL;
2213
2214     pa_sink_assert_ref(s);
2215
2216     pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
2217     pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
2218     pa_assert(min_latency <= max_latency);
2219
2220     /* Hmm, let's see if someone forgot to set PA_SINK_DYNAMIC_LATENCY here... */
2221     pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
2222                max_latency == ABSOLUTE_MAX_LATENCY) ||
2223               (s->flags & PA_SINK_DYNAMIC_LATENCY));
2224
2225     s->thread_info.min_latency = min_latency;
2226     s->thread_info.max_latency = max_latency;
2227
2228     if (PA_SINK_IS_LINKED(s->thread_info.state)) {
2229         pa_sink_input *i;
2230
2231         while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)))
2232             if (i->update_sink_latency_range)
2233                 i->update_sink_latency_range(i);
2234     }
2235
2236     pa_sink_invalidate_requested_latency(s);
2237
2238     pa_source_set_latency_range_within_thread(s->monitor_source, min_latency, max_latency);
2239 }
2240
2241 /* Called from main thread, before the sink is put */
2242 void pa_sink_set_fixed_latency(pa_sink *s, pa_usec_t latency) {
2243     pa_sink_assert_ref(s);
2244
2245     pa_assert(pa_sink_get_state(s) == PA_SINK_INIT);
2246
2247     if (latency < ABSOLUTE_MIN_LATENCY)
2248         latency = ABSOLUTE_MIN_LATENCY;
2249
2250     if (latency > ABSOLUTE_MAX_LATENCY)
2251         latency = ABSOLUTE_MAX_LATENCY;
2252
2253     s->fixed_latency = latency;
2254     pa_source_set_fixed_latency(s->monitor_source, latency);
2255 }
2256
2257 /* Called from main context */
2258 size_t pa_sink_get_max_rewind(pa_sink *s) {
2259     size_t r;
2260     pa_sink_assert_ref(s);
2261
2262     if (!PA_SINK_IS_LINKED(s->state))
2263         return s->thread_info.max_rewind;
2264
2265     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
2266
2267     return r;
2268 }
2269
2270 /* Called from main context */
2271 size_t pa_sink_get_max_request(pa_sink *s) {
2272     size_t r;
2273     pa_sink_assert_ref(s);
2274
2275     if (!PA_SINK_IS_LINKED(s->state))
2276         return s->thread_info.max_request;
2277
2278     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MAX_REQUEST, &r, 0, NULL) == 0);
2279
2280     return r;
2281 }
2282
2283 /* Called from main context */
2284 int pa_sink_set_port(pa_sink *s, const char *name, pa_bool_t save) {
2285     pa_device_port *port;
2286
2287     pa_assert(s);
2288
2289     if (!s->set_port) {
2290         pa_log_debug("set_port() operation not implemented for sink %u \"%s\"", s->index, s->name);
2291         return -PA_ERR_NOTIMPLEMENTED;
2292     }
2293
2294     if (!s->ports)
2295         return -PA_ERR_NOENTITY;
2296
2297     if (!(port = pa_hashmap_get(s->ports, name)))
2298         return -PA_ERR_NOENTITY;
2299
2300     if (s->active_port == port) {
2301         s->save_port = s->save_port || save;
2302         return 0;
2303     }
2304
2305     if ((s->set_port(s, port)) < 0)
2306         return -PA_ERR_NOENTITY;
2307
2308     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
2309
2310     pa_log_info("Changed port of sink %u \"%s\" to %s", s->index, s->name, port->name);
2311
2312     s->active_port = port;
2313     s->save_port = save;
2314
2315     return 0;
2316 }
2317
2318 /* Called from main context */
2319 pa_bool_t pa_device_init_icon(pa_proplist *p, pa_bool_t is_sink) {
2320     const char *ff, *c, *t = NULL, *s = "", *profile, *bus;
2321
2322     pa_assert(p);
2323
2324     if (pa_proplist_contains(p, PA_PROP_DEVICE_ICON_NAME))
2325         return TRUE;
2326
2327     if ((ff = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR))) {
2328
2329         if (pa_streq(ff, "microphone"))
2330             t = "audio-input-microphone";
2331         else if (pa_streq(ff, "webcam"))
2332             t = "camera-web";
2333         else if (pa_streq(ff, "computer"))
2334             t = "computer";
2335         else if (pa_streq(ff, "handset"))
2336             t = "phone";
2337         else if (pa_streq(ff, "portable"))
2338             t = "multimedia-player";
2339         else if (pa_streq(ff, "tv"))
2340             t = "video-display";
2341
2342         /*
2343          * The following icons are not part of the icon naming spec,
2344          * because Rodney Dawes sucks as the maintainer of that spec.
2345          *
2346          * http://lists.freedesktop.org/archives/xdg/2009-May/010397.html
2347          */
2348         else if (pa_streq(ff, "headset"))
2349             t = "audio-headset";
2350         else if (pa_streq(ff, "headphone"))
2351             t = "audio-headphones";
2352         else if (pa_streq(ff, "speaker"))
2353             t = "audio-speakers";
2354         else if (pa_streq(ff, "hands-free"))
2355             t = "audio-handsfree";
2356     }
2357
2358     if (!t)
2359         if ((c = pa_proplist_gets(p, PA_PROP_DEVICE_CLASS)))
2360             if (pa_streq(c, "modem"))
2361                 t = "modem";
2362
2363     if (!t) {
2364         if (is_sink)
2365             t = "audio-card";
2366         else
2367             t = "audio-input-microphone";
2368     }
2369
2370     if ((profile = pa_proplist_gets(p, PA_PROP_DEVICE_PROFILE_NAME))) {
2371         if (strstr(profile, "analog"))
2372             s = "-analog";
2373         else if (strstr(profile, "iec958"))
2374             s = "-iec958";
2375         else if (strstr(profile, "hdmi"))
2376             s = "-hdmi";
2377     }
2378
2379     bus = pa_proplist_gets(p, PA_PROP_DEVICE_BUS);
2380
2381     pa_proplist_setf(p, PA_PROP_DEVICE_ICON_NAME, "%s%s%s%s", t, pa_strempty(s), bus ? "-" : "", pa_strempty(bus));
2382
2383     return TRUE;
2384 }
2385
2386 pa_bool_t pa_device_init_description(pa_proplist *p) {
2387     const char *s;
2388     pa_assert(p);
2389
2390     if (pa_proplist_contains(p, PA_PROP_DEVICE_DESCRIPTION))
2391         return TRUE;
2392
2393     if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR)))
2394         if (pa_streq(s, "internal")) {
2395             pa_proplist_sets(p, PA_PROP_DEVICE_DESCRIPTION, _("Internal Audio"));
2396             return TRUE;
2397         }
2398
2399     if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_CLASS)))
2400         if (pa_streq(s, "modem")) {
2401             pa_proplist_sets(p, PA_PROP_DEVICE_DESCRIPTION, _("Modem"));
2402             return TRUE;
2403         }
2404
2405     if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_PRODUCT_NAME))) {
2406         pa_proplist_sets(p, PA_PROP_DEVICE_DESCRIPTION, s);
2407         return TRUE;
2408     }
2409
2410     return FALSE;
2411 }
2412
2413 pa_bool_t pa_device_init_intended_roles(pa_proplist *p) {
2414     const char *s;
2415     pa_assert(p);
2416
2417     if (pa_proplist_contains(p, PA_PROP_DEVICE_INTENDED_ROLES))
2418         return TRUE;
2419
2420     if ((s = pa_proplist_gets(p, PA_PROP_DEVICE_FORM_FACTOR)))
2421         if (pa_streq(s, "handset") || pa_streq(s, "hands-free")) {
2422             pa_proplist_sets(p, PA_PROP_DEVICE_INTENDED_ROLES, "phone");
2423             return TRUE;
2424         }
2425
2426     return FALSE;
2427 }