code.delx.au - pulseaudio/blob - src/pulsecore/source.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 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 <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30
  31 #include <pulse/utf8.h>
  32 #include <pulse/xmalloc.h>
  33 #include <pulse/timeval.h>
  34
  35 #include <pulsecore/source-output.h>
  36 #include <pulsecore/namereg.h>
  37 #include <pulsecore/core-subscribe.h>
  38 #include <pulsecore/log.h>
  39 #include <pulsecore/sample-util.h>
  40
  41 #include "source.h"
  42
  43 #define DEFAULT_MIN_LATENCY (4*PA_USEC_PER_MSEC)
  44
  45 static PA_DEFINE_CHECK_TYPE(pa_source, pa_msgobject);
  46
  47 static void source_free(pa_object *o);
  48
  49 pa_source_new_data* pa_source_new_data_init(pa_source_new_data *data) {
  50     pa_assert(data);
  51
  52     memset(data, 0, sizeof(*data));
  53     data->proplist = pa_proplist_new();
  54
  55     return data;
  56 }
  57
  58 void pa_source_new_data_set_name(pa_source_new_data *data, const char *name) {
  59     pa_assert(data);
  60
  61     pa_xfree(data->name);
  62     data->name = pa_xstrdup(name);
  63 }
  64
  65 void pa_source_new_data_set_sample_spec(pa_source_new_data *data, const pa_sample_spec *spec) {
  66     pa_assert(data);
  67
  68     if ((data->sample_spec_is_set = !!spec))
  69         data->sample_spec = *spec;
  70 }
  71
  72 void pa_source_new_data_set_channel_map(pa_source_new_data *data, const pa_channel_map *map) {
  73     pa_assert(data);
  74
  75     if ((data->channel_map_is_set = !!map))
  76         data->channel_map = *map;
  77 }
  78
  79 void pa_source_new_data_set_volume(pa_source_new_data *data, const pa_cvolume *volume) {
  80     pa_assert(data);
  81
  82     if ((data->volume_is_set = !!volume))
  83         data->volume = *volume;
  84 }
  85
  86 void pa_source_new_data_set_muted(pa_source_new_data *data, pa_bool_t mute) {
  87     pa_assert(data);
  88
  89     data->muted_is_set = TRUE;
  90     data->muted = !!mute;
  91 }
  92
  93 void pa_source_new_data_done(pa_source_new_data *data) {
  94     pa_assert(data);
  95
  96     pa_xfree(data->name);
  97     pa_proplist_free(data->proplist);
  98 }
  99
 100 /* Called from main context */
 101 static void reset_callbacks(pa_source *s) {
 102     pa_assert(s);
 103
 104     s->set_state = NULL;
 105     s->get_volume = NULL;
 106     s->set_volume = NULL;
 107     s->get_mute = NULL;
 108     s->set_mute = NULL;
 109     s->update_requested_latency = NULL;
 110 }
 111
 112 /* Called from main context */
 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     pa_assert(data);
 124     pa_assert(data->name);
 125
 126     s = pa_msgobject_new(pa_source);
 127
 128     if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
 129         pa_xfree(s);
 130         return NULL;
 131     }
 132
 133     pa_source_new_data_set_name(data, name);
 134
 135     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
 136         pa_xfree(s);
 137         pa_namereg_unregister(core, name);
 138         return NULL;
 139     }
 140
 141     pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
 142     pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
 143
 144     pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
 145
 146     if (!data->channel_map_is_set)
 147         pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
 148
 149     pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
 150     pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
 151
 152     if (!data->volume_is_set)
 153         pa_cvolume_reset(&data->volume, data->sample_spec.channels);
 154
 155     pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
 156     pa_return_null_if_fail(data->volume.channels == data->sample_spec.channels);
 157
 158     if (!data->muted_is_set)
 159         data->muted = FALSE;
 160
 161     if (data->card)
 162         pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
 163
 164     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
 165         pa_xfree(s);
 166         pa_namereg_unregister(core, name);
 167         return NULL;
 168     }
 169
 170     s->parent.parent.free = source_free;
 171     s->parent.process_msg = pa_source_process_msg;
 172
 173     s->core = core;
 174     s->state = PA_SOURCE_INIT;
 175     s->flags = flags;
 176     s->name = pa_xstrdup(name);
 177     s->proplist = pa_proplist_copy(data->proplist);
 178     s->driver = pa_xstrdup(data->driver);
 179     s->module = data->module;
 180     s->card = data->card;
 181
 182     s->sample_spec = data->sample_spec;
 183     s->channel_map = data->channel_map;
 184
 185     s->outputs = pa_idxset_new(NULL, NULL);
 186     s->n_corked = 0;
 187     s->monitor_of = NULL;
 188
 189     s->volume = data->volume;
 190     s->muted = data->muted;
 191     s->refresh_volume = s->refresh_muted = FALSE;
 192     s->base_volume = PA_VOLUME_NORM;
 193
 194     reset_callbacks(s);
 195     s->userdata = NULL;
 196
 197     s->asyncmsgq = NULL;
 198     s->rtpoll = NULL;
 199
 200     pa_silence_memchunk_get(
 201             &core->silence_cache,
 202             core->mempool,
 203             &s->silence,
 204             &s->sample_spec,
 205             0);
 206
 207     s->thread_info.outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 208     pa_cvolume_reset(&s->thread_info.soft_volume, s->sample_spec.channels);
 209     s->thread_info.soft_muted = FALSE;
 210     s->thread_info.state = s->state;
 211     s->thread_info.max_rewind = 0;
 212     s->thread_info.requested_latency_valid = FALSE;
 213     s->thread_info.requested_latency = 0;
 214     s->thread_info.min_latency = DEFAULT_MIN_LATENCY;
 215     s->thread_info.max_latency = 0;
 216
 217     pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
 218
 219     if (s->card)
 220         pa_assert_se(pa_idxset_put(s->card->sources, s, NULL) >= 0);
 221
 222     pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s",
 223                 s->index,
 224                 s->name,
 225                 pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
 226                 pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map));
 227
 228     return s;
 229 }
 230
 231 /* Called from main context */
 232 static int source_set_state(pa_source *s, pa_source_state_t state) {
 233     int ret;
 234     pa_bool_t suspend_change;
 235     pa_source_state_t original_state;
 236
 237     pa_assert(s);
 238
 239     if (s->state == state)
 240         return 0;
 241
 242     original_state = s->state;
 243
 244     suspend_change =
 245         (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
 246         (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
 247
 248     if (s->set_state)
 249         if ((ret = s->set_state(s, state)) < 0)
 250             return ret;
 251
 252     if (s->asyncmsgq)
 253         if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
 254
 255             if (s->set_state)
 256                 s->set_state(s, original_state);
 257
 258             return ret;
 259         }
 260
 261     s->state = state;
 262
 263     if (suspend_change) {
 264         pa_source_output *o;
 265         uint32_t idx;
 266
 267         /* We're suspending or resuming, tell everyone about it */
 268
 269         for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx)))
 270             if (o->suspend)
 271                 o->suspend(o, state == PA_SOURCE_SUSPENDED);
 272     }
 273
 274     if (state != PA_SOURCE_UNLINKED) /* if we enter UNLINKED state pa_source_unlink() will fire the apropriate events */
 275         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
 276
 277     return 0;
 278 }
 279
 280 /* Called from main context */
 281 void pa_source_put(pa_source *s) {
 282     pa_source_assert_ref(s);
 283
 284     pa_assert(s->state == PA_SOURCE_INIT);
 285
 286     /* The following fields must be initialized properly when calling _put() */
 287     pa_assert(s->asyncmsgq);
 288     pa_assert(s->rtpoll);
 289     pa_assert(!s->thread_info.min_latency || !s->thread_info.max_latency ||
 290               s->thread_info.min_latency <= s->thread_info.max_latency);
 291
 292     if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL)) {
 293         s->flags |= PA_SOURCE_DECIBEL_VOLUME;
 294
 295         s->thread_info.soft_volume = s->volume;
 296         s->thread_info.soft_muted = s->muted;
 297     }
 298
 299     pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
 300
 301     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
 302     pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
 303 }
 304
 305 /* Called from main context */
 306 void pa_source_unlink(pa_source *s) {
 307     pa_bool_t linked;
 308     pa_source_output *o, *j = NULL;
 309
 310     pa_assert(s);
 311
 312     /* See pa_sink_unlink() for a couple of comments how this function
 313      * works. */
 314
 315     linked = PA_SOURCE_IS_LINKED(s->state);
 316
 317     if (linked)
 318         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
 319
 320     if (s->state != PA_SOURCE_UNLINKED)
 321         pa_namereg_unregister(s->core, s->name);
 322     pa_idxset_remove_by_data(s->core->sources, s, NULL);
 323
 324     if (s->card)
 325         pa_idxset_remove_by_data(s->card->sinks, s, NULL);
 326
 327     while ((o = pa_idxset_first(s->outputs, NULL))) {
 328         pa_assert(o != j);
 329         pa_source_output_kill(o);
 330         j = o;
 331     }
 332
 333     if (linked)
 334         source_set_state(s, PA_SOURCE_UNLINKED);
 335     else
 336         s->state = PA_SOURCE_UNLINKED;
 337
 338     reset_callbacks(s);
 339
 340     if (linked) {
 341         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
 342         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
 343     }
 344 }
 345
 346 /* Called from main context */
 347 static void source_free(pa_object *o) {
 348     pa_source_output *so;
 349     pa_source *s = PA_SOURCE(o);
 350
 351     pa_assert(s);
 352     pa_assert(pa_source_refcnt(s) == 0);
 353
 354     if (PA_SOURCE_IS_LINKED(s->state))
 355         pa_source_unlink(s);
 356
 357     pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
 358
 359     pa_idxset_free(s->outputs, NULL, NULL);
 360
 361     while ((so = pa_hashmap_steal_first(s->thread_info.outputs)))
 362         pa_source_output_unref(so);
 363
 364     pa_hashmap_free(s->thread_info.outputs, NULL, NULL);
 365
 366     if (s->silence.memblock)
 367         pa_memblock_unref(s->silence.memblock);
 368
 369     pa_xfree(s->name);
 370     pa_xfree(s->driver);
 371
 372     if (s->proplist)
 373         pa_proplist_free(s->proplist);
 374
 375     pa_xfree(s);
 376 }
 377
 378 /* Called from main context */
 379 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
 380     pa_source_assert_ref(s);
 381
 382     s->asyncmsgq = q;
 383 }
 384
 385 /* Called from main context */
 386 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
 387     pa_source_assert_ref(s);
 388
 389     s->rtpoll = p;
 390 }
 391
 392 /* Called from main context */
 393 int pa_source_update_status(pa_source*s) {
 394     pa_source_assert_ref(s);
 395     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 396
 397     if (s->state == PA_SOURCE_SUSPENDED)
 398         return 0;
 399
 400     return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
 401 }
 402
 403 /* Called from main context */
 404 int pa_source_suspend(pa_source *s, pa_bool_t suspend) {
 405     pa_source_assert_ref(s);
 406     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 407
 408     if (suspend)
 409         return source_set_state(s, PA_SOURCE_SUSPENDED);
 410     else
 411         return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
 412 }
 413
 414 /* Called from IO thread context */
 415 void pa_source_process_rewind(pa_source *s, size_t nbytes) {
 416     pa_source_output *o;
 417     void *state = NULL;
 418
 419     pa_source_assert_ref(s);
 420     pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
 421
 422     if (nbytes <= 0)
 423         return;
 424
 425     pa_log_debug("Processing rewind...");
 426
 427     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
 428         pa_source_output_assert_ref(o);
 429         pa_source_output_process_rewind(o, nbytes);
 430     }
 431 }
 432
 433 /* Called from IO thread context */
 434 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
 435     pa_source_output *o;
 436     void *state = NULL;
 437
 438     pa_source_assert_ref(s);
 439     pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
 440     pa_assert(chunk);
 441
 442     if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
 443         pa_memchunk vchunk = *chunk;
 444
 445         pa_memblock_ref(vchunk.memblock);
 446         pa_memchunk_make_writable(&vchunk, 0);
 447
 448         if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
 449             pa_silence_memchunk(&vchunk, &s->sample_spec);
 450         else
 451             pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
 452
 453         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
 454             pa_source_output_assert_ref(o);
 455
 456             if (!o->thread_info.direct_on_input)
 457                 pa_source_output_push(o, &vchunk);
 458         }
 459
 460         pa_memblock_unref(vchunk.memblock);
 461     } else {
 462
 463         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
 464             pa_source_output_assert_ref(o);
 465
 466             if (!o->thread_info.direct_on_input)
 467                 pa_source_output_push(o, chunk);
 468         }
 469     }
 470 }
 471
 472 /* Called from IO thread context */
 473 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
 474     pa_source_assert_ref(s);
 475     pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
 476     pa_source_output_assert_ref(o);
 477     pa_assert(o->thread_info.direct_on_input);
 478     pa_assert(chunk);
 479
 480     if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
 481         pa_memchunk vchunk = *chunk;
 482
 483         pa_memblock_ref(vchunk.memblock);
 484         pa_memchunk_make_writable(&vchunk, 0);
 485
 486         if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
 487             pa_silence_memchunk(&vchunk, &s->sample_spec);
 488         else
 489             pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
 490
 491         pa_source_output_push(o, &vchunk);
 492
 493         pa_memblock_unref(vchunk.memblock);
 494     } else
 495         pa_source_output_push(o, chunk);
 496 }
 497
 498 /* Called from main thread */
 499 pa_usec_t pa_source_get_latency(pa_source *s) {
 500     pa_usec_t usec;
 501
 502     pa_source_assert_ref(s);
 503     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 504
 505     if (!PA_SOURCE_IS_OPENED(s->state))
 506         return 0;
 507
 508     if (!(s->flags & PA_SOURCE_LATENCY))
 509         return 0;
 510
 511     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
 512
 513     return usec;
 514 }
 515
 516 /* Called from main thread */
 517 void pa_source_set_volume(pa_source *s, const pa_cvolume *volume) {
 518     pa_bool_t changed;
 519
 520     pa_source_assert_ref(s);
 521     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 522     pa_assert(volume);
 523
 524     changed = !pa_cvolume_equal(volume, &s->volume);
 525     s->volume = *volume;
 526
 527     if (s->set_volume && s->set_volume(s) < 0)
 528         s->set_volume = NULL;
 529
 530     if (!s->set_volume)
 531         pa_source_set_soft_volume(s, volume);
 532
 533     if (changed)
 534         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 535 }
 536
 537 /* Called from main thread */
 538 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
 539     pa_source_assert_ref(s);
 540     pa_assert(volume);
 541
 542     if (PA_SOURCE_IS_LINKED(s->state))
 543         pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, volume, 0, NULL);
 544     else
 545         s->thread_info.soft_volume = *volume;
 546 }
 547
 548 /* Called from main thread */
 549 const pa_cvolume *pa_source_get_volume(pa_source *s, pa_bool_t force_refresh) {
 550     pa_source_assert_ref(s);
 551     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 552
 553     if (s->refresh_volume || force_refresh) {
 554         pa_cvolume old_volume = s->volume;
 555
 556         if (s->get_volume && s->get_volume(s) < 0)
 557             s->get_volume = NULL;
 558
 559         if (!s->get_volume)
 560             pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, &s->volume, 0, NULL);
 561
 562         if (!pa_cvolume_equal(&old_volume, &s->volume))
 563             pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 564     }
 565
 566     return &s->volume;
 567 }
 568
 569 /* Called from main thread */
 570 void pa_source_set_mute(pa_source *s, pa_bool_t mute) {
 571     pa_bool_t changed;
 572
 573     pa_source_assert_ref(s);
 574     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 575
 576     changed = s->muted != mute;
 577     s->muted = mute;
 578
 579     if (s->set_mute && s->set_mute(s) < 0)
 580         s->set_mute = NULL;
 581
 582     if (!s->set_mute)
 583         pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL);
 584
 585     if (changed)
 586         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 587 }
 588
 589 /* Called from main thread */
 590 pa_bool_t pa_source_get_mute(pa_source *s, pa_bool_t force_refresh) {
 591
 592     pa_source_assert_ref(s);
 593     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 594
 595     if (s->refresh_muted || force_refresh) {
 596         pa_bool_t old_muted = s->muted;
 597
 598         if (s->get_mute && s->get_mute(s) < 0)
 599             s->get_mute = NULL;
 600
 601         if (!s->get_mute)
 602             pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &s->muted, 0, NULL);
 603
 604         if (old_muted != s->muted)
 605             pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 606     }
 607
 608     return s->muted;
 609 }
 610
 611 pa_bool_t pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
 612
 613     pa_source_assert_ref(s);
 614
 615     pa_proplist_update(s->proplist, mode, p);
 616
 617     if (PA_SOURCE_IS_LINKED(s->state)) {
 618         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
 619         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 620     }
 621
 622     return TRUE;
 623 }
 624
 625 /* Called from main thread */
 626 void pa_source_set_description(pa_source *s, const char *description) {
 627     const char *old;
 628     pa_source_assert_ref(s);
 629
 630     if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
 631         return;
 632
 633     old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
 634
 635     if (old && description && !strcmp(old, description))
 636         return;
 637
 638     if (description)
 639         pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
 640     else
 641         pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
 642
 643     if (PA_SOURCE_IS_LINKED(s->state)) {
 644         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 645         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
 646     }
 647 }
 648
 649 /* Called from main thread */
 650 unsigned pa_source_linked_by(pa_source *s) {
 651     pa_source_assert_ref(s);
 652     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 653
 654     return pa_idxset_size(s->outputs);
 655 }
 656
 657 /* Called from main thread */
 658 unsigned pa_source_used_by(pa_source *s) {
 659     unsigned ret;
 660
 661     pa_source_assert_ref(s);
 662     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 663
 664     ret = pa_idxset_size(s->outputs);
 665     pa_assert(ret >= s->n_corked);
 666
 667     return ret - s->n_corked;
 668 }
 669
 670 /* Called from main thread */
 671 unsigned pa_source_check_suspend(pa_source *s) {
 672     unsigned ret;
 673     pa_source_output *o;
 674     uint32_t idx;
 675
 676     pa_source_assert_ref(s);
 677
 678     if (!PA_SOURCE_IS_LINKED(s->state))
 679         return 0;
 680
 681     ret = 0;
 682
 683     for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx))) {
 684         pa_source_output_state_t st;
 685
 686         st = pa_source_output_get_state(o);
 687         pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(st));
 688
 689         if (st == PA_SOURCE_OUTPUT_CORKED)
 690             continue;
 691
 692         if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
 693             continue;
 694
 695         ret ++;
 696     }
 697
 698     return ret;
 699 }
 700
 701 /* Called from IO thread, except when it is not */
 702 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
 703     pa_source *s = PA_SOURCE(object);
 704     pa_source_assert_ref(s);
 705
 706     switch ((pa_source_message_t) code) {
 707
 708         case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
 709             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 710
 711             pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
 712
 713             if (o->direct_on_input) {
 714                 o->thread_info.direct_on_input = o->direct_on_input;
 715                 pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
 716             }
 717
 718             pa_assert(!o->thread_info.attached);
 719             o->thread_info.attached = TRUE;
 720
 721             if (o->attach)
 722                 o->attach(o);
 723
 724             pa_source_output_set_state_within_thread(o, o->state);
 725
 726             if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
 727                 pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
 728
 729             pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
 730
 731             /* We don't just invalidate the requested latency here,
 732              * because if we are in a move we might need to fix up the
 733              * requested latency. */
 734             pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
 735
 736             return 0;
 737         }
 738
 739         case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
 740             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 741
 742             pa_source_output_set_state_within_thread(o, o->state);
 743
 744             if (o->detach)
 745                 o->detach(o);
 746
 747             pa_assert(o->thread_info.attached);
 748             o->thread_info.attached = FALSE;
 749
 750             if (o->thread_info.direct_on_input) {
 751                 pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
 752                 o->thread_info.direct_on_input = NULL;
 753             }
 754
 755             if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
 756                 pa_source_output_unref(o);
 757
 758             pa_source_invalidate_requested_latency(s);
 759
 760             return 0;
 761         }
 762
 763         case PA_SOURCE_MESSAGE_SET_VOLUME:
 764             s->thread_info.soft_volume = *((pa_cvolume*) userdata);
 765             return 0;
 766
 767         case PA_SOURCE_MESSAGE_SET_MUTE:
 768             s->thread_info.soft_muted = PA_PTR_TO_UINT(userdata);
 769             return 0;
 770
 771         case PA_SOURCE_MESSAGE_GET_VOLUME:
 772             *((pa_cvolume*) userdata) = s->thread_info.soft_volume;
 773             return 0;
 774
 775         case PA_SOURCE_MESSAGE_GET_MUTE:
 776             *((pa_bool_t*) userdata) = s->thread_info.soft_muted;
 777             return 0;
 778
 779         case PA_SOURCE_MESSAGE_SET_STATE:
 780             s->thread_info.state = PA_PTR_TO_UINT(userdata);
 781             return 0;
 782
 783         case PA_SOURCE_MESSAGE_DETACH:
 784
 785             /* Detach all streams */
 786             pa_source_detach_within_thread(s);
 787             return 0;
 788
 789         case PA_SOURCE_MESSAGE_ATTACH:
 790
 791             /* Reattach all streams */
 792             pa_source_attach_within_thread(s);
 793             return 0;
 794
 795         case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
 796
 797             pa_usec_t *usec = userdata;
 798             *usec = pa_source_get_requested_latency_within_thread(s);
 799
 800             if (*usec == (pa_usec_t) -1)
 801                 *usec = s->thread_info.max_latency;
 802
 803             return 0;
 804         }
 805
 806         case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
 807             pa_usec_t *r = userdata;
 808
 809             pa_source_update_latency_range(s, r[0], r[1]);
 810
 811             return 0;
 812         }
 813
 814         case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
 815             pa_usec_t *r = userdata;
 816
 817             r[0] = s->thread_info.min_latency;
 818             r[1] = s->thread_info.max_latency;
 819
 820             return 0;
 821         }
 822
 823         case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
 824
 825             *((size_t*) userdata) = s->thread_info.max_rewind;
 826             return 0;
 827
 828         case PA_SOURCE_MESSAGE_GET_LATENCY:
 829
 830             if (s->monitor_of) {
 831                 *((pa_usec_t*) userdata) = 0;
 832                 return 0;
 833             }
 834
 835             /* Implementors need to overwrite this implementation! */
 836             return -1;
 837
 838         case PA_SOURCE_MESSAGE_MAX:
 839             ;
 840     }
 841
 842     return -1;
 843 }
 844
 845 /* Called from main thread */
 846 int pa_source_suspend_all(pa_core *c, pa_bool_t suspend) {
 847     uint32_t idx;
 848     pa_source *source;
 849     int ret = 0;
 850
 851     pa_core_assert_ref(c);
 852
 853     for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx)))
 854         ret -= pa_source_suspend(source, suspend) < 0;
 855
 856     return ret;
 857 }
 858
 859 /* Called from main thread */
 860 void pa_source_detach(pa_source *s) {
 861     pa_source_assert_ref(s);
 862     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 863
 864     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL) == 0);
 865 }
 866
 867 /* Called from main thread */
 868 void pa_source_attach(pa_source *s) {
 869     pa_source_assert_ref(s);
 870     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 871
 872     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
 873 }
 874
 875 /* Called from IO thread */
 876 void pa_source_detach_within_thread(pa_source *s) {
 877     pa_source_output *o;
 878     void *state = NULL;
 879
 880     pa_source_assert_ref(s);
 881     pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
 882
 883     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 884         if (o->detach)
 885             o->detach(o);
 886 }
 887
 888 /* Called from IO thread */
 889 void pa_source_attach_within_thread(pa_source *s) {
 890     pa_source_output *o;
 891     void *state = NULL;
 892
 893     pa_source_assert_ref(s);
 894     pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
 895
 896     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 897         if (o->attach)
 898             o->attach(o);
 899 }
 900
 901 /* Called from IO thread */
 902 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
 903     pa_usec_t result = (pa_usec_t) -1;
 904     pa_source_output *o;
 905     void *state = NULL;
 906
 907     pa_source_assert_ref(s);
 908
 909     if (s->thread_info.requested_latency_valid)
 910         return s->thread_info.requested_latency;
 911
 912     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 913
 914         if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
 915             (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
 916             result = o->thread_info.requested_source_latency;
 917
 918     if (result != (pa_usec_t) -1) {
 919         if (s->thread_info.max_latency > 0 && result > s->thread_info.max_latency)
 920             result = s->thread_info.max_latency;
 921
 922         if (s->thread_info.min_latency > 0 && result < s->thread_info.min_latency)
 923             result = s->thread_info.min_latency;
 924     }
 925
 926     s->thread_info.requested_latency = result;
 927     s->thread_info.requested_latency_valid = TRUE;
 928
 929     return result;
 930 }
 931
 932 /* Called from main thread */
 933 pa_usec_t pa_source_get_requested_latency(pa_source *s) {
 934     pa_usec_t usec;
 935
 936     pa_source_assert_ref(s);
 937     pa_assert(PA_SOURCE_IS_LINKED(s->state));
 938
 939     if (!PA_SOURCE_IS_OPENED(s->state))
 940         return 0;
 941
 942     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
 943
 944     return usec;
 945 }
 946
 947 /* Called from IO thread */
 948 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
 949     pa_source_output *o;
 950     void *state = NULL;
 951
 952     pa_source_assert_ref(s);
 953
 954     if (max_rewind == s->thread_info.max_rewind)
 955         return;
 956
 957     s->thread_info.max_rewind = max_rewind;
 958
 959     if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
 960         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 961             pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
 962     }
 963 }
 964
 965 void pa_source_invalidate_requested_latency(pa_source *s) {
 966     pa_source_output *o;
 967     void *state = NULL;
 968
 969     pa_source_assert_ref(s);
 970
 971     s->thread_info.requested_latency_valid = FALSE;
 972
 973     if (s->update_requested_latency)
 974         s->update_requested_latency(s);
 975
 976     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 977         if (o->update_source_requested_latency)
 978             o->update_source_requested_latency(o);
 979
 980     if (s->monitor_of)
 981         pa_sink_invalidate_requested_latency(s->monitor_of);
 982 }
 983
 984 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
 985     pa_source_assert_ref(s);
 986
 987     /* min_latency == 0:           no limit
 988      * min_latency == (size_t) -1: default limit
 989      * min_latency anything else:  specified limit
 990      *
 991      * Similar for max_latency */
 992
 993     if (min_latency == (pa_usec_t) -1)
 994         min_latency = DEFAULT_MIN_LATENCY;
 995
 996     if (max_latency == (pa_usec_t) -1)
 997         max_latency = min_latency;
 998
 999     pa_assert(!min_latency || !max_latency ||
1000               min_latency <= max_latency);
1001
1002     if (PA_SOURCE_IS_LINKED(s->state)) {
1003         pa_usec_t r[2];
1004
1005         r[0] = min_latency;
1006         r[1] = max_latency;
1007
1008         pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
1009     } else {
1010         s->thread_info.min_latency = min_latency;
1011         s->thread_info.max_latency = max_latency;
1012
1013         s->thread_info.requested_latency_valid = FALSE;
1014     }
1015 }
1016
1017 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
1018    pa_source_assert_ref(s);
1019    pa_assert(min_latency);
1020    pa_assert(max_latency);
1021
1022    if (PA_SOURCE_IS_LINKED(s->state)) {
1023        pa_usec_t r[2] = { 0, 0 };
1024
1025        pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
1026
1027        *min_latency = r[0];
1028        *max_latency = r[1];
1029    } else {
1030        *min_latency = s->thread_info.min_latency;
1031        *max_latency = s->thread_info.max_latency;
1032    }
1033 }
1034
1035 /* Called from IO thread */
1036 void pa_source_update_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
1037     pa_source_output *o;
1038     void *state = NULL;
1039
1040     pa_source_assert_ref(s);
1041
1042     s->thread_info.min_latency = min_latency;
1043     s->thread_info.max_latency = max_latency;
1044
1045     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
1046         if (o->update_source_latency_range)
1047             o->update_source_latency_range(o);
1048
1049     pa_source_invalidate_requested_latency(s);
1050 }
1051
1052 size_t pa_source_get_max_rewind(pa_source *s) {
1053     size_t r;
1054     pa_source_assert_ref(s);
1055
1056     if (!PA_SOURCE_IS_LINKED(s->state))
1057         return s->thread_info.max_rewind;
1058
1059     pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
1060
1061     return r;
1062 }