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
 421             if (!o->thread_info.direct_on_input)
 422                 pa_source_output_push(o, &vchunk);
 423         }
 424
 425         pa_memblock_unref(vchunk.memblock);
 426     } else {
 427
 428         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
 429             pa_source_output_assert_ref(o);
 430
 431             if (!o->thread_info.direct_on_input)
 432                 pa_source_output_push(o, chunk);
 433         }
 434     }
 435 }
 436
 437 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
 438     pa_source_assert_ref(s);
 439     pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
 440     pa_source_output_assert_ref(o);
 441     pa_assert(o->thread_info.direct_on_input);
 442     pa_assert(chunk);
 443
 444     if (s->thread_info.state != PA_SOURCE_RUNNING)
 445         return;
 446
 447     if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
 448         pa_memchunk vchunk = *chunk;
 449
 450         pa_memblock_ref(vchunk.memblock);
 451         pa_memchunk_make_writable(&vchunk, 0);
 452
 453         if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
 454             pa_silence_memchunk(&vchunk, &s->sample_spec);
 455         else
 456             pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
 457
 458         pa_source_output_push(o, &vchunk);
 459
 460         pa_memblock_unref(vchunk.memblock);
 461     } else
 462         pa_source_output_push(o, chunk);
 463 }
 464
 465 pa_usec_t pa_source_get_latency(pa_source *s) {
 466     pa_usec_t usec;
 467
 468     pa_source_assert_ref(s);
 469     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 470
 471     if (!PA_SOURCE_IS_OPENED(s->state))
 472         return 0;
 473
 474     if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
 475         return 0;
 476
 477     return usec;
 478 }
 479
 480 void pa_source_set_volume(pa_source *s, const pa_cvolume *volume) {
 481     int changed;
 482
 483     pa_source_assert_ref(s);
 484     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 485     pa_assert(volume);
 486
 487     changed = !pa_cvolume_equal(volume, &s->volume);
 488     s->volume = *volume;
 489
 490     if (s->set_volume && s->set_volume(s) < 0)
 491         s->set_volume = NULL;
 492
 493     if (!s->set_volume)
 494         pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, pa_xnewdup(struct pa_cvolume, volume, 1), 0, NULL, pa_xfree);
 495
 496     if (changed)
 497         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 498 }
 499
 500 const pa_cvolume *pa_source_get_volume(pa_source *s) {
 501     pa_cvolume old_volume;
 502
 503     pa_source_assert_ref(s);
 504     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 505
 506     old_volume = s->volume;
 507
 508     if (s->get_volume && s->get_volume(s) < 0)
 509         s->get_volume = NULL;
 510
 511     if (!s->get_volume && s->refresh_volume)
 512         pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, &s->volume, 0, NULL);
 513
 514     if (!pa_cvolume_equal(&old_volume, &s->volume))
 515         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 516
 517     return &s->volume;
 518 }
 519
 520 void pa_source_set_mute(pa_source *s, pa_bool_t mute) {
 521     int changed;
 522
 523     pa_source_assert_ref(s);
 524     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 525
 526     changed = s->muted != mute;
 527     s->muted = mute;
 528
 529     if (s->set_mute && s->set_mute(s) < 0)
 530         s->set_mute = NULL;
 531
 532     if (!s->set_mute)
 533         pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL);
 534
 535     if (changed)
 536         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 537 }
 538
 539 pa_bool_t pa_source_get_mute(pa_source *s) {
 540     pa_bool_t old_muted;
 541
 542     pa_source_assert_ref(s);
 543     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 544
 545     old_muted = s->muted;
 546
 547     if (s->get_mute && s->get_mute(s) < 0)
 548         s->get_mute = NULL;
 549
 550     if (!s->get_mute && s->refresh_muted)
 551         pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &s->muted, 0, NULL);
 552
 553     if (old_muted != s->muted)
 554         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 555
 556     return s->muted;
 557 }
 558
 559 void pa_source_set_description(pa_source *s, const char *description) {
 560     const char *old;
 561     pa_source_assert_ref(s);
 562
 563     if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
 564         return;
 565
 566     old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
 567
 568     if (old && description && !strcmp(old, description))
 569         return;
 570
 571     if (description)
 572         pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
 573     else
 574         pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
 575
 576     if (PA_SOURCE_IS_LINKED(s->state)) {
 577         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 578         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
 579     }
 580 }
 581
 582 unsigned pa_source_linked_by(pa_source *s) {
 583     pa_source_assert_ref(s);
 584     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 585
 586     return pa_idxset_size(s->outputs);
 587 }
 588
 589 unsigned pa_source_used_by(pa_source *s) {
 590     unsigned ret;
 591
 592     pa_source_assert_ref(s);
 593     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 594
 595     ret = pa_idxset_size(s->outputs);
 596     pa_assert(ret >= s->n_corked);
 597
 598     return ret - s->n_corked;
 599 }
 600
 601 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
 602     pa_source *s = PA_SOURCE(object);
 603     pa_source_assert_ref(s);
 604     pa_assert(s->thread_info.state != PA_SOURCE_UNLINKED);
 605
 606     switch ((pa_source_message_t) code) {
 607         case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
 608             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 609
 610             pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
 611
 612             if (o->direct_on_input) {
 613                 o->thread_info.direct_on_input = o->direct_on_input;
 614                 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
 615             }
 616
 617             pa_assert(!o->thread_info.attached);
 618             o->thread_info.attached = TRUE;
 619
 620             if (o->attach)
 621                 o->attach(o);
 622
 623             pa_source_output_set_state_within_thread(o, o->state);
 624
 625             pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
 626
 627             /* We don't just invalidate the requested latency here,
 628              * because if we are in a move we might need to fix up the
 629              * requested latency. */
 630             pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
 631
 632             return 0;
 633         }
 634
 635         case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
 636             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 637
 638             pa_source_output_set_state_within_thread(o, o->state);
 639
 640             if (o->detach)
 641                 o->detach(o);
 642
 643             pa_assert(o->thread_info.attached);
 644             o->thread_info.attached = FALSE;
 645
 646             if (o->thread_info.direct_on_input) {
 647                 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
 648                 o->thread_info.direct_on_input = NULL;
 649             }
 650
 651             if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
 652                 pa_source_output_unref(o);
 653
 654             pa_source_invalidate_requested_latency(s);
 655
 656             return 0;
 657         }
 658
 659         case PA_SOURCE_MESSAGE_SET_VOLUME:
 660             s->thread_info.soft_volume = *((pa_cvolume*) userdata);
 661             return 0;
 662
 663         case PA_SOURCE_MESSAGE_SET_MUTE:
 664             s->thread_info.soft_muted = PA_PTR_TO_UINT(userdata);
 665             return 0;
 666
 667         case PA_SOURCE_MESSAGE_GET_VOLUME:
 668             *((pa_cvolume*) userdata) = s->thread_info.soft_volume;
 669             return 0;
 670
 671         case PA_SOURCE_MESSAGE_GET_MUTE:
 672             *((pa_bool_t*) userdata) = s->thread_info.soft_muted;
 673             return 0;
 674
 675         case PA_SOURCE_MESSAGE_SET_STATE:
 676             s->thread_info.state = PA_PTR_TO_UINT(userdata);
 677             return 0;
 678
 679         case PA_SOURCE_MESSAGE_DETACH:
 680
 681             /* We're detaching all our output streams so that the
 682              * asyncmsgq and rtpoll fields can be changed without
 683              * problems */
 684             pa_source_detach_within_thread(s);
 685             return 0;
 686
 687         case PA_SOURCE_MESSAGE_ATTACH:
 688
 689             /* Reattach all streams */
 690             pa_source_attach_within_thread(s);
 691             return 0;
 692
 693         case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
 694
 695             pa_usec_t *usec = userdata;
 696             *usec = pa_source_get_requested_latency_within_thread(s);
 697             return 0;
 698         }
 699
 700         case PA_SOURCE_MESSAGE_GET_LATENCY:
 701         case PA_SOURCE_MESSAGE_MAX:
 702             ;
 703     }
 704
 705     return -1;
 706 }
 707
 708 int pa_source_suspend_all(pa_core *c, pa_bool_t suspend) {
 709     uint32_t idx;
 710     pa_source *source;
 711     int ret = 0;
 712
 713     pa_core_assert_ref(c);
 714
 715     for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx)))
 716         ret -= pa_source_suspend(source, suspend) < 0;
 717
 718     return ret;
 719 }
 720
 721 void pa_source_detach(pa_source *s) {
 722     pa_source_assert_ref(s);
 723     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 724
 725     pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL);
 726 }
 727
 728 void pa_source_attach(pa_source *s) {
 729     pa_source_assert_ref(s);
 730     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 731
 732     pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL);
 733 }
 734
 735 void pa_source_detach_within_thread(pa_source *s) {
 736     pa_source_output *o;
 737     void *state = NULL;
 738
 739     pa_source_assert_ref(s);
 740     pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
 741
 742     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 743         if (o->detach)
 744             o->detach(o);
 745 }
 746
 747 void pa_source_attach_within_thread(pa_source *s) {
 748     pa_source_output *o;
 749     void *state = NULL;
 750
 751     pa_source_assert_ref(s);
 752     pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
 753
 754     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 755         if (o->attach)
 756             o->attach(o);
 757 }
 758
 759 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
 760     pa_usec_t result = (pa_usec_t) -1;
 761     pa_source_output *o;
 762     void *state = NULL;
 763
 764     pa_source_assert_ref(s);
 765
 766     if (s->thread_info.requested_latency_valid)
 767         return s->thread_info.requested_latency;
 768
 769     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 770
 771         if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
 772             (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
 773             result = o->thread_info.requested_source_latency;
 774
 775     if (result != (pa_usec_t) -1) {
 776         if (s->max_latency > 0 && result > s->max_latency)
 777             result = s->max_latency;
 778
 779         if (s->min_latency > 0 && result < s->min_latency)
 780             result = s->min_latency;
 781     }
 782
 783     s->thread_info.requested_latency = result;
 784     s->thread_info.requested_latency_valid = TRUE;
 785
 786     return result;
 787 }
 788
 789 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
 790     pa_usec_t usec;
 791
 792     pa_source_assert_ref(s);
 793     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 794
 795     if (!PA_SOURCE_IS_OPENED(s->state))
 796         return 0;
 797
 798     if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) < 0)
 799         return 0;
 800
 801     if (usec == (pa_usec_t) -1)
 802         usec = s->max_latency;
 803
 804     return usec;
 805 }
 806
 807 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
 808     pa_source_output *o;
 809     void *state = NULL;
 810
 811     pa_source_assert_ref(s);
 812
 813     if (max_rewind == s->thread_info.max_rewind)
 814         return;
 815
 816     s->thread_info.max_rewind = max_rewind;
 817
 818     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 819         pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
 820 }
 821
 822 void pa_source_invalidate_requested_latency(pa_source *s) {
 823
 824     pa_source_assert_ref(s);
 825
 826     s->thread_info.requested_latency_valid = FALSE;
 827
 828     if (s->update_requested_latency)
 829         s->update_requested_latency(s);
 830
 831     if (s->monitor_of)
 832         pa_sink_invalidate_requested_latency(s->monitor_of);
 833 }
 834
 835 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
 836     pa_source_assert_ref(s);
 837
 838     if (min_latency == (pa_usec_t) -1)
 839         min_latency = DEFAULT_MIN_LATENCY;
 840
 841     if (max_latency == (pa_usec_t) -1)
 842         max_latency = min_latency;
 843
 844     pa_assert(!min_latency || !max_latency ||
 845               min_latency <= max_latency);
 846
 847     s->min_latency = min_latency;
 848     s->max_latency = max_latency;
 849 }