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

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   8
   9   PulseAudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as published
  11   by the Free Software Foundation; either version 2 of the License,
  12   or (at your option) any later version.
  13
  14   PulseAudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with PulseAudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32
  33 #include <pulse/utf8.h>
  34 #include <pulse/xmalloc.h>
  35 #include <pulse/timeval.h>
  36
  37 #include <pulsecore/source-output.h>
  38 #include <pulsecore/namereg.h>
  39 #include <pulsecore/core-subscribe.h>
  40 #include <pulsecore/log.h>
  41 #include <pulsecore/sample-util.h>
  42
  43 #include "source.h"
  44
  45 #define DEFAULT_MIN_LATENCY (4*PA_USEC_PER_MSEC)
  46
  47 static PA_DEFINE_CHECK_TYPE(pa_source, pa_msgobject);
  48
  49 static void source_free(pa_object *o);
  50
  51 pa_source_new_data* pa_source_new_data_init(pa_source_new_data *data) {
  52     pa_assert(data);
  53
  54     memset(data, 0, sizeof(*data));
  55     data->proplist = pa_proplist_new();
  56
  57     return data;
  58 }
  59
  60 void pa_source_new_data_set_name(pa_source_new_data *data, const char *name) {
  61     pa_assert(data);
  62
  63     pa_xfree(data->name);
  64     data->name = pa_xstrdup(name);
  65 }
  66
  67 void pa_source_new_data_set_sample_spec(pa_source_new_data *data, const pa_sample_spec *spec) {
  68     pa_assert(data);
  69
  70     if ((data->sample_spec_is_set = !!spec))
  71         data->sample_spec = *spec;
  72 }
  73
  74 void pa_source_new_data_set_channel_map(pa_source_new_data *data, const pa_channel_map *map) {
  75     pa_assert(data);
  76
  77     if ((data->channel_map_is_set = !!map))
  78         data->channel_map = *map;
  79 }
  80
  81 void pa_source_new_data_set_volume(pa_source_new_data *data, const pa_cvolume *volume) {
  82     pa_assert(data);
  83
  84     if ((data->volume_is_set = !!volume))
  85         data->volume = *volume;
  86 }
  87
  88 void pa_source_new_data_set_muted(pa_source_new_data *data, pa_bool_t mute) {
  89     pa_assert(data);
  90
  91     data->muted_is_set = TRUE;
  92     data->muted = !!mute;
  93 }
  94
  95 void pa_source_new_data_done(pa_source_new_data *data) {
  96     pa_assert(data);
  97
  98     pa_xfree(data->name);
  99     pa_proplist_free(data->proplist);
 100 }
 101
 102 static void reset_callbacks(pa_source *s) {
 103     pa_assert(s);
 104
 105     s->set_state = NULL;
 106     s->get_volume = NULL;
 107     s->set_volume = NULL;
 108     s->get_mute = NULL;
 109     s->set_mute = NULL;
 110     s->update_requested_latency = NULL;
 111 }
 112
 113 pa_source* pa_source_new(
 114         pa_core *core,
 115         pa_source_new_data *data,
 116         pa_source_flags_t flags) {
 117
 118     pa_source *s;
 119     const char *name;
 120     char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
 121
 122     pa_assert(core);
 123
 124     s = pa_msgobject_new(pa_source);
 125
 126     if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
 127         pa_xfree(s);
 128         return NULL;
 129     }
 130
 131     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
 132         pa_xfree(s);
 133         pa_namereg_unregister(core, name);
 134         return NULL;
 135     }
 136
 137     pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
 138     pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
 139
 140     pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
 141
 142     if (!data->channel_map_is_set)
 143         pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
 144
 145     pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
 146     pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
 147
 148     if (!data->volume_is_set)
 149         pa_cvolume_reset(&data->volume, data->sample_spec.channels);
 150
 151     pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
 152     pa_return_null_if_fail(data->volume.channels == data->sample_spec.channels);
 153
 154     if (!data->muted_is_set)
 155         data->muted = FALSE;
 156
 157     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
 158         pa_xfree(s);
 159         pa_namereg_unregister(core, name);
 160         return NULL;
 161     }
 162
 163     s->parent.parent.free = source_free;
 164     s->parent.process_msg = pa_source_process_msg;
 165
 166     s->core = core;
 167     s->state = PA_SOURCE_INIT;
 168     s->flags = flags;
 169     s->name = pa_xstrdup(name);
 170     s->proplist = pa_proplist_copy(data->proplist);
 171     s->driver = pa_xstrdup(data->driver);
 172     s->module = data->module;
 173
 174     s->sample_spec = data->sample_spec;
 175     s->channel_map = data->channel_map;
 176
 177     s->outputs = pa_idxset_new(NULL, NULL);
 178     s->n_corked = 0;
 179     s->monitor_of = NULL;
 180
 181     s->volume = data->volume;
 182     s->muted = data->muted;
 183     s->refresh_volume = s->refresh_muted = FALSE;
 184
 185     reset_callbacks(s);
 186     s->userdata = NULL;
 187
 188     s->asyncmsgq = NULL;
 189     s->rtpoll = NULL;
 190
 191     pa_silence_memchunk_get(
 192             &core->silence_cache,
 193             core->mempool,
 194             &s->silence,
 195             &s->sample_spec,
 196             0);
 197
 198     s->min_latency = DEFAULT_MIN_LATENCY;
 199     s->max_latency = s->min_latency;
 200
 201     s->thread_info.outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 202     s->thread_info.soft_volume = s->volume;
 203     s->thread_info.soft_muted = s->muted;
 204     s->thread_info.state = s->state;
 205     s->thread_info.max_rewind = 0;
 206     s->thread_info.requested_latency_valid = FALSE;
 207     s->thread_info.requested_latency = 0;
 208
 209     pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
 210
 211     pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s",
 212                 s->index,
 213                 s->name,
 214                 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
 215                 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map));
 216
 217     return s;
 218 }
 219
 220 static int source_set_state(pa_source *s, pa_source_state_t state) {
 221     int ret;
 222     pa_bool_t suspend_change;
 223
 224     pa_assert(s);
 225
 226     if (s->state == state)
 227         return 0;
 228
 229     suspend_change =
 230         (s->state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
 231         (PA_SOURCE_IS_OPENED(s->state) && state == PA_SOURCE_SUSPENDED);
 232
 233     if (s->set_state)
 234         if ((ret = s->set_state(s, state)) < 0)
 235             return -1;
 236
 237     if (s->asyncmsgq)
 238         if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) < 0)
 239             return -1;
 240
 241     s->state = state;
 242
 243     if (suspend_change) {
 244         pa_source_output *o;
 245         uint32_t idx;
 246
 247         /* We're suspending or resuming, tell everyone about it */
 248
 249         for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx)))
 250             if (o->suspend)
 251                 o->suspend(o, state == PA_SINK_SUSPENDED);
 252     }
 253
 254     if (state != PA_SOURCE_UNLINKED) /* if we enter UNLINKED state pa_source_unlink() will fire the apropriate events */
 255         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
 256
 257     return 0;
 258 }
 259
 260 void pa_source_put(pa_source *s) {
 261     pa_source_assert_ref(s);
 262
 263     pa_assert(s->state == PA_SINK_INIT);
 264     pa_assert(s->asyncmsgq);
 265     pa_assert(s->rtpoll);
 266
 267     pa_assert(!s->min_latency || !s->max_latency || s->min_latency <= s->max_latency);
 268
 269     if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL))
 270         s->flags |= PA_SOURCE_DECIBEL_VOLUME;
 271
 272     pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
 273
 274     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
 275     pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
 276 }
 277
 278 void pa_source_unlink(pa_source *s) {
 279     pa_bool_t linked;
 280     pa_source_output *o, *j = NULL;
 281
 282     pa_assert(s);
 283
 284     /* See pa_sink_unlink() for a couple of comments how this function
 285      * works. */
 286
 287     linked = PA_SOURCE_IS_LINKED(s->state);
 288
 289     if (linked)
 290         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
 291
 292     if (s->state != PA_SOURCE_UNLINKED)
 293         pa_namereg_unregister(s->core, s->name);
 294     pa_idxset_remove_by_data(s->core->sources, s, NULL);
 295
 296     while ((o = pa_idxset_first(s->outputs, NULL))) {
 297         pa_assert(o != j);
 298         pa_source_output_kill(o);
 299         j = o;
 300     }
 301
 302     if (linked)
 303         source_set_state(s, PA_SOURCE_UNLINKED);
 304     else
 305         s->state = PA_SOURCE_UNLINKED;
 306
 307     reset_callbacks(s);
 308
 309     if (linked) {
 310         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
 311         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
 312     }
 313 }
 314
 315 static void source_free(pa_object *o) {
 316     pa_source_output *so;
 317     pa_source *s = PA_SOURCE(o);
 318
 319     pa_assert(s);
 320     pa_assert(pa_source_refcnt(s) == 0);
 321
 322     if (PA_SOURCE_IS_LINKED(s->state))
 323         pa_source_unlink(s);
 324
 325     pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
 326
 327     pa_idxset_free(s->outputs, NULL, NULL);
 328
 329     while ((so = pa_hashmap_steal_first(s->thread_info.outputs)))
 330         pa_source_output_unref(so);
 331
 332     pa_hashmap_free(s->thread_info.outputs, NULL, NULL);
 333
 334     if (s->silence.memblock)
 335         pa_memblock_unref(s->silence.memblock);
 336
 337     pa_xfree(s->name);
 338     pa_xfree(s->driver);
 339
 340     if (s->proplist)
 341         pa_proplist_free(s->proplist);
 342
 343     pa_xfree(s);
 344 }
 345
 346 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
 347     pa_source_assert_ref(s);
 348
 349     s->asyncmsgq = q;
 350 }
 351
 352 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
 353     pa_source_assert_ref(s);
 354
 355     s->rtpoll = p;
 356 }
 357
 358 int pa_source_update_status(pa_source*s) {
 359     pa_source_assert_ref(s);
 360     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 361
 362     if (s->state == PA_SOURCE_SUSPENDED)
 363         return 0;
 364
 365     return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
 366 }
 367
 368 int pa_source_suspend(pa_source *s, pa_bool_t suspend) {
 369     pa_source_assert_ref(s);
 370     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 371
 372     if (suspend)
 373         return source_set_state(s, PA_SOURCE_SUSPENDED);
 374     else
 375         return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
 376 }
 377
 378 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
 379     pa_source_output *o;
 380     void *state = NULL;
 381
 382     pa_source_assert_ref(s);
 383     pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
 384
 385     if (nbytes <= 0)
 386         return;
 387
 388     pa_log_debug("Processing rewind...");
 389
 390     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
 391         pa_source_output_assert_ref(o);
 392         pa_source_output_process_rewind(o, nbytes);
 393     }
 394 }
 395
 396 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
 397     pa_source_output *o;
 398     void *state = NULL;
 399
 400     pa_source_assert_ref(s);
 401     pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
 402     pa_assert(chunk);
 403
 404     if (s->thread_info.state != PA_SOURCE_RUNNING)
 405         return;
 406
 407     if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
 408         pa_memchunk vchunk = *chunk;
 409
 410         pa_memblock_ref(vchunk.memblock);
 411         pa_memchunk_make_writable(&vchunk, 0);
 412
 413         if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
 414             pa_silence_memchunk(&vchunk, &s->sample_spec);
 415         else
 416             pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
 417
 418         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
 419             pa_source_output_assert_ref(o);
 420             pa_source_output_push(o, &vchunk);
 421         }
 422
 423         pa_memblock_unref(vchunk.memblock);
 424     } else {
 425
 426         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
 427             pa_source_output_assert_ref(o);
 428             pa_source_output_push(o, chunk);
 429         }
 430     }
 431 }
 432
 433 pa_usec_t pa_source_get_latency(pa_source *s) {
 434     pa_usec_t usec;
 435
 436     pa_source_assert_ref(s);
 437     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 438
 439     if (!PA_SOURCE_IS_OPENED(s->state))
 440         return 0;
 441
 442     if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
 443         return 0;
 444
 445     return usec;
 446 }
 447
 448 void pa_source_set_volume(pa_source *s, const pa_cvolume *volume) {
 449     int changed;
 450
 451     pa_source_assert_ref(s);
 452     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 453     pa_assert(volume);
 454
 455     changed = !pa_cvolume_equal(volume, &s->volume);
 456     s->volume = *volume;
 457
 458     if (s->set_volume && s->set_volume(s) < 0)
 459         s->set_volume = NULL;
 460
 461     if (!s->set_volume)
 462         pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, pa_xnewdup(struct pa_cvolume, volume, 1), 0, NULL, pa_xfree);
 463
 464     if (changed)
 465         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 466 }
 467
 468 const pa_cvolume *pa_source_get_volume(pa_source *s) {
 469     pa_cvolume old_volume;
 470
 471     pa_source_assert_ref(s);
 472     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 473
 474     old_volume = s->volume;
 475
 476     if (s->get_volume && s->get_volume(s) < 0)
 477         s->get_volume = NULL;
 478
 479     if (!s->get_volume && s->refresh_volume)
 480         pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, &s->volume, 0, NULL);
 481
 482     if (!pa_cvolume_equal(&old_volume, &s->volume))
 483         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 484
 485     return &s->volume;
 486 }
 487
 488 void pa_source_set_mute(pa_source *s, pa_bool_t mute) {
 489     int changed;
 490
 491     pa_source_assert_ref(s);
 492     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 493
 494     changed = s->muted != mute;
 495     s->muted = mute;
 496
 497     if (s->set_mute && s->set_mute(s) < 0)
 498         s->set_mute = NULL;
 499
 500     if (!s->set_mute)
 501         pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL);
 502
 503     if (changed)
 504         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 505 }
 506
 507 pa_bool_t pa_source_get_mute(pa_source *s) {
 508     pa_bool_t old_muted;
 509
 510     pa_source_assert_ref(s);
 511     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 512
 513     old_muted = s->muted;
 514
 515     if (s->get_mute && s->get_mute(s) < 0)
 516         s->get_mute = NULL;
 517
 518     if (!s->get_mute && s->refresh_muted)
 519         pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &s->muted, 0, NULL);
 520
 521     if (old_muted != s->muted)
 522         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 523
 524     return s->muted;
 525 }
 526
 527 void pa_source_set_description(pa_source *s, const char *description) {
 528     const char *old;
 529     pa_source_assert_ref(s);
 530
 531     if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
 532         return;
 533
 534     old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
 535
 536     if (old && description && !strcmp(old, description))
 537         return;
 538
 539     if (description)
 540         pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
 541     else
 542         pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
 543
 544     if (PA_SOURCE_IS_LINKED(s->state)) {
 545         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 546         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
 547     }
 548 }
 549
 550 unsigned pa_source_linked_by(pa_source *s) {
 551     pa_source_assert_ref(s);
 552     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 553
 554     return pa_idxset_size(s->outputs);
 555 }
 556
 557 unsigned pa_source_used_by(pa_source *s) {
 558     unsigned ret;
 559
 560     pa_source_assert_ref(s);
 561     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 562
 563     ret = pa_idxset_size(s->outputs);
 564     pa_assert(ret >= s->n_corked);
 565
 566     return ret - s->n_corked;
 567 }
 568
 569 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
 570     pa_source *s = PA_SOURCE(object);
 571     pa_source_assert_ref(s);
 572     pa_assert(s->thread_info.state != PA_SOURCE_UNLINKED);
 573
 574     switch ((pa_source_message_t) code) {
 575         case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
 576             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 577
 578             pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
 579
 580             pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
 581
 582             pa_assert(!o->thread_info.attached);
 583             o->thread_info.attached = TRUE;
 584
 585             if (o->attach)
 586                 o->attach(o);
 587
 588             pa_source_output_set_state_within_thread(o, o->state);
 589
 590             pa_source_invalidate_requested_latency(s);
 591
 592             return 0;
 593         }
 594
 595         case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
 596             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 597
 598             pa_source_output_set_state_within_thread(o, o->state);
 599
 600             if (o->detach)
 601                 o->detach(o);
 602
 603             pa_assert(o->thread_info.attached);
 604             o->thread_info.attached = FALSE;
 605
 606             if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
 607                 pa_source_output_unref(o);
 608
 609             pa_source_invalidate_requested_latency(s);
 610
 611             return 0;
 612         }
 613
 614         case PA_SOURCE_MESSAGE_SET_VOLUME:
 615             s->thread_info.soft_volume = *((pa_cvolume*) userdata);
 616             return 0;
 617
 618         case PA_SOURCE_MESSAGE_SET_MUTE:
 619             s->thread_info.soft_muted = PA_PTR_TO_UINT(userdata);
 620             return 0;
 621
 622         case PA_SOURCE_MESSAGE_GET_VOLUME:
 623             *((pa_cvolume*) userdata) = s->thread_info.soft_volume;
 624             return 0;
 625
 626         case PA_SOURCE_MESSAGE_GET_MUTE:
 627             *((pa_bool_t*) userdata) = s->thread_info.soft_muted;
 628             return 0;
 629
 630         case PA_SOURCE_MESSAGE_SET_STATE:
 631             s->thread_info.state = PA_PTR_TO_UINT(userdata);
 632             return 0;
 633
 634         case PA_SOURCE_MESSAGE_DETACH:
 635
 636             /* We're detaching all our output streams so that the
 637              * asyncmsgq and rtpoll fields can be changed without
 638              * problems */
 639             pa_source_detach_within_thread(s);
 640             return 0;
 641
 642         case PA_SOURCE_MESSAGE_ATTACH:
 643
 644             /* Reattach all streams */
 645             pa_source_attach_within_thread(s);
 646             return 0;
 647
 648         case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
 649
 650             pa_usec_t *usec = userdata;
 651             *usec = pa_source_get_requested_latency_within_thread(s);
 652             return 0;
 653         }
 654
 655         case PA_SOURCE_MESSAGE_GET_LATENCY:
 656         case PA_SOURCE_MESSAGE_MAX:
 657             ;
 658     }
 659
 660     return -1;
 661 }
 662
 663 int pa_source_suspend_all(pa_core *c, pa_bool_t suspend) {
 664     uint32_t idx;
 665     pa_source *source;
 666     int ret = 0;
 667
 668     pa_core_assert_ref(c);
 669
 670     for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx)))
 671         ret -= pa_source_suspend(source, suspend) < 0;
 672
 673     return ret;
 674 }
 675
 676 void pa_source_detach(pa_source *s) {
 677     pa_source_assert_ref(s);
 678     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 679
 680     pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL);
 681 }
 682
 683 void pa_source_attach(pa_source *s) {
 684     pa_source_assert_ref(s);
 685     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 686
 687     pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL);
 688 }
 689
 690 void pa_source_detach_within_thread(pa_source *s) {
 691     pa_source_output *o;
 692     void *state = NULL;
 693
 694     pa_source_assert_ref(s);
 695     pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
 696
 697     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 698         if (o->detach)
 699             o->detach(o);
 700 }
 701
 702 void pa_source_attach_within_thread(pa_source *s) {
 703     pa_source_output *o;
 704     void *state = NULL;
 705
 706     pa_source_assert_ref(s);
 707     pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
 708
 709     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 710         if (o->attach)
 711             o->attach(o);
 712 }
 713
 714 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
 715     pa_usec_t result = (pa_usec_t) -1;
 716     pa_source_output *o;
 717     void *state = NULL;
 718
 719     pa_source_assert_ref(s);
 720
 721     if (s->thread_info.requested_latency_valid)
 722         return s->thread_info.requested_latency;
 723
 724     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 725
 726         if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
 727             (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
 728             result = o->thread_info.requested_source_latency;
 729
 730     if (result != (pa_usec_t) -1) {
 731         if (s->max_latency > 0 && result > s->max_latency)
 732             result = s->max_latency;
 733
 734         if (s->min_latency > 0 && result < s->min_latency)
 735             result = s->min_latency;
 736     }
 737
 738     s->thread_info.requested_latency = result;
 739     s->thread_info.requested_latency_valid = TRUE;
 740
 741     return result;
 742 }
 743
 744 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
 745     pa_usec_t usec;
 746
 747     pa_source_assert_ref(s);
 748     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 749
 750     if (!PA_SOURCE_IS_OPENED(s->state))
 751         return 0;
 752
 753     if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) < 0)
 754         return 0;
 755
 756     if (usec == (pa_usec_t) -1)
 757         usec = s->max_latency;
 758
 759     return usec;
 760 }
 761
 762 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
 763     pa_source_output *o;
 764     void *state = NULL;
 765
 766     pa_source_assert_ref(s);
 767
 768     if (max_rewind == s->thread_info.max_rewind)
 769         return;
 770
 771     s->thread_info.max_rewind = max_rewind;
 772
 773     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 774         pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
 775 }
 776
 777 void pa_source_invalidate_requested_latency(pa_source *s) {
 778
 779     pa_source_assert_ref(s);
 780     pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
 781
 782     s->thread_info.requested_latency_valid = FALSE;
 783
 784     if (s->update_requested_latency)
 785         s->update_requested_latency(s);
 786 }