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
  36 #include <pulsecore/source-output.h>
  37 #include <pulsecore/namereg.h>
  38 #include <pulsecore/core-subscribe.h>
  39 #include <pulsecore/log.h>
  40 #include <pulsecore/sample-util.h>
  41
  42 #include "source.h"
  43
  44 static PA_DEFINE_CHECK_TYPE(pa_source, pa_msgobject);
  45
  46 static void source_free(pa_object *o);
  47
  48 pa_source* pa_source_new(
  49         pa_core *core,
  50         const char *driver,
  51         const char *name,
  52         int fail,
  53         const pa_sample_spec *spec,
  54         const pa_channel_map *map) {
  55
  56     pa_source *s;
  57     char st[256];
  58     pa_channel_map tmap;
  59
  60     pa_assert(core);
  61     pa_assert(name);
  62     pa_assert(spec);
  63
  64     pa_return_null_if_fail(pa_sample_spec_valid(spec));
  65
  66     if (!map)
  67         pa_return_null_if_fail(map = pa_channel_map_init_auto(&tmap, spec->channels, PA_CHANNEL_MAP_DEFAULT));
  68
  69     pa_return_null_if_fail(map && pa_channel_map_valid(map));
  70     pa_return_null_if_fail(map->channels == spec->channels);
  71     pa_return_null_if_fail(!driver || pa_utf8_valid(driver));
  72     pa_return_null_if_fail(pa_utf8_valid(name) && *name);
  73
  74     s = pa_msgobject_new(pa_source);
  75
  76     if (!(name = pa_namereg_register(core, name, PA_NAMEREG_SOURCE, s, fail))) {
  77         pa_xfree(s);
  78         return NULL;
  79     }
  80
  81     s->parent.parent.free = source_free;
  82     s->parent.process_msg = pa_source_process_msg;
  83
  84     s->core = core;
  85     s->state = PA_SOURCE_INIT;
  86     s->flags = 0;
  87     s->name = pa_xstrdup(name);
  88     s->description = NULL;
  89     s->driver = pa_xstrdup(driver);
  90     s->module = NULL;
  91
  92     s->sample_spec = *spec;
  93     s->channel_map = *map;
  94
  95     s->outputs = pa_idxset_new(NULL, NULL);
  96     s->n_corked = 0;
  97     s->monitor_of = NULL;
  98
  99     pa_cvolume_reset(&s->volume, spec->channels);
 100     s->muted = FALSE;
 101     s->refresh_volume = s->refresh_muted = FALSE;
 102
 103     s->get_latency = NULL;
 104     s->set_volume = NULL;
 105     s->get_volume = NULL;
 106     s->set_mute = NULL;
 107     s->get_mute = NULL;
 108     s->set_state = NULL;
 109     s->userdata = NULL;
 110
 111     s->asyncmsgq = NULL;
 112     s->rtpoll = NULL;
 113
 114     pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
 115
 116     pa_sample_spec_snprint(st, sizeof(st), spec);
 117     pa_log_info("Created source %u \"%s\" with sample spec \"%s\"", s->index, s->name, st);
 118
 119     s->thread_info.outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 120     s->thread_info.soft_volume = s->volume;
 121     s->thread_info.soft_muted = s->muted;
 122     s->thread_info.state = s->state;
 123
 124     return s;
 125 }
 126
 127 static int source_set_state(pa_source *s, pa_source_state_t state) {
 128     int ret;
 129     pa_bool_t suspend_change;
 130
 131     pa_assert(s);
 132
 133     if (s->state == state)
 134         return 0;
 135
 136     suspend_change =
 137         (s->state == PA_SOURCE_SUSPENDED && PA_SOURCE_OPENED(state)) ||
 138         (PA_SOURCE_OPENED(s->state) && state == PA_SOURCE_SUSPENDED);
 139
 140     if (s->set_state)
 141         if ((ret = s->set_state(s, state)) < 0)
 142             return -1;
 143
 144     if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) < 0)
 145         return -1;
 146
 147     s->state = state;
 148
 149     if (suspend_change) {
 150         pa_source_output *o;
 151         uint32_t idx;
 152
 153         /* We're suspending or resuming, tell everyone about it */
 154
 155         for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx)))
 156             if (o->suspend)
 157                 o->suspend(o, state == PA_SINK_SUSPENDED);
 158     }
 159
 160     if (state != PA_SOURCE_UNLINKED) /* if we enter UNLINKED state pa_source_unlink() will fire the apropriate events */
 161         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
 162
 163     return 0;
 164 }
 165
 166 void pa_source_put(pa_source *s) {
 167     pa_source_assert_ref(s);
 168
 169     pa_assert(s->state == PA_SINK_INIT);
 170     pa_assert(s->rtpoll);
 171     pa_assert(s->asyncmsgq);
 172
 173     pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
 174
 175     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
 176     pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_NEW_POST], s);
 177 }
 178
 179 void pa_source_unlink(pa_source *s) {
 180     pa_bool_t linked;
 181     pa_source_output *o, *j = NULL;
 182
 183     pa_assert(s);
 184
 185     /* See pa_sink_unlink() for a couple of comments how this function
 186      * works. */
 187
 188     linked = PA_SOURCE_LINKED(s->state);
 189
 190     if (linked)
 191         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
 192
 193     if (s->state != PA_SOURCE_UNLINKED)
 194         pa_namereg_unregister(s->core, s->name);
 195     pa_idxset_remove_by_data(s->core->sources, s, NULL);
 196
 197     while ((o = pa_idxset_first(s->outputs, NULL))) {
 198         pa_assert(o != j);
 199         pa_source_output_kill(o);
 200         j = o;
 201     }
 202
 203     if (linked)
 204         source_set_state(s, PA_SOURCE_UNLINKED);
 205     else
 206         s->state = PA_SOURCE_UNLINKED;
 207
 208     s->get_latency = NULL;
 209     s->get_volume = NULL;
 210     s->set_volume = NULL;
 211     s->set_mute = NULL;
 212     s->get_mute = NULL;
 213     s->set_state = NULL;
 214
 215     if (linked) {
 216         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
 217         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
 218     }
 219 }
 220
 221 static void source_free(pa_object *o) {
 222     pa_source_output *so;
 223     pa_source *s = PA_SOURCE(o);
 224
 225     pa_assert(s);
 226     pa_assert(pa_source_refcnt(s) == 0);
 227
 228     if (PA_SOURCE_LINKED(s->state))
 229         pa_source_unlink(s);
 230
 231     pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
 232
 233     pa_idxset_free(s->outputs, NULL, NULL);
 234
 235     while ((so = pa_hashmap_steal_first(s->thread_info.outputs)))
 236         pa_source_output_unref(so);
 237
 238     pa_hashmap_free(s->thread_info.outputs, NULL, NULL);
 239
 240     pa_xfree(s->name);
 241     pa_xfree(s->description);
 242     pa_xfree(s->driver);
 243     pa_xfree(s);
 244 }
 245
 246 int pa_source_update_status(pa_source*s) {
 247     pa_source_assert_ref(s);
 248     pa_assert(PA_SOURCE_LINKED(s->state));
 249
 250     if (s->state == PA_SOURCE_SUSPENDED)
 251         return 0;
 252
 253     return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
 254 }
 255
 256 int pa_source_suspend(pa_source *s, pa_bool_t suspend) {
 257     pa_source_assert_ref(s);
 258     pa_assert(PA_SOURCE_LINKED(s->state));
 259
 260     if (suspend)
 261         return source_set_state(s, PA_SOURCE_SUSPENDED);
 262     else
 263         return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
 264 }
 265
 266 void pa_source_ping(pa_source *s) {
 267     pa_source_assert_ref(s);
 268     pa_assert(PA_SOURCE_LINKED(s->state));
 269
 270     pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_PING, NULL, 0, NULL, NULL);
 271 }
 272
 273 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
 274     pa_source_output *o;
 275     void *state = NULL;
 276
 277     pa_source_assert_ref(s);
 278     pa_assert(PA_SOURCE_OPENED(s->thread_info.state));
 279     pa_assert(chunk);
 280
 281     if (s->thread_info.state != PA_SOURCE_RUNNING)
 282         return;
 283
 284     if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
 285         pa_memchunk vchunk = *chunk;
 286
 287         pa_memblock_ref(vchunk.memblock);
 288         pa_memchunk_make_writable(&vchunk, 0);
 289
 290         if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
 291             pa_silence_memchunk(&vchunk, &s->sample_spec);
 292         else
 293             pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
 294
 295         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 296             pa_source_output_push(o, &vchunk);
 297
 298         pa_memblock_unref(vchunk.memblock);
 299     } else {
 300
 301         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 302             pa_source_output_push(o, chunk);
 303     }
 304 }
 305
 306 pa_usec_t pa_source_get_latency(pa_source *s) {
 307     pa_usec_t usec;
 308
 309     pa_source_assert_ref(s);
 310     pa_assert(PA_SOURCE_LINKED(s->state));
 311
 312     if (!PA_SOURCE_OPENED(s->state))
 313         return 0;
 314
 315     if (s->get_latency)
 316         return s->get_latency(s);
 317
 318     if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
 319         return 0;
 320
 321     return usec;
 322 }
 323
 324 void pa_source_set_volume(pa_source *s, const pa_cvolume *volume) {
 325     int changed;
 326
 327     pa_source_assert_ref(s);
 328     pa_assert(PA_SOURCE_LINKED(s->state));
 329     pa_assert(volume);
 330
 331     changed = !pa_cvolume_equal(volume, &s->volume);
 332     s->volume = *volume;
 333
 334     if (s->set_volume && s->set_volume(s) < 0)
 335         s->set_volume = NULL;
 336
 337     if (!s->set_volume)
 338         pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, pa_xnewdup(struct pa_cvolume, volume, 1), 0, NULL, pa_xfree);
 339
 340     if (changed)
 341         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 342 }
 343
 344 const pa_cvolume *pa_source_get_volume(pa_source *s) {
 345     pa_cvolume old_volume;
 346
 347     pa_source_assert_ref(s);
 348     pa_assert(PA_SOURCE_LINKED(s->state));
 349
 350     old_volume = s->volume;
 351
 352     if (s->get_volume && s->get_volume(s) < 0)
 353         s->get_volume = NULL;
 354
 355     if (!s->get_volume && s->refresh_volume)
 356         pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, &s->volume, 0, NULL);
 357
 358     if (!pa_cvolume_equal(&old_volume, &s->volume))
 359         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 360
 361     return &s->volume;
 362 }
 363
 364 void pa_source_set_mute(pa_source *s, pa_bool_t mute) {
 365     int changed;
 366
 367     pa_source_assert_ref(s);
 368     pa_assert(PA_SOURCE_LINKED(s->state));
 369
 370     changed = s->muted != mute;
 371     s->muted = mute;
 372
 373     if (s->set_mute && s->set_mute(s) < 0)
 374         s->set_mute = NULL;
 375
 376     if (!s->set_mute)
 377         pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL);
 378
 379     if (changed)
 380         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 381 }
 382
 383 pa_bool_t pa_source_get_mute(pa_source *s) {
 384     pa_bool_t old_muted;
 385
 386     pa_source_assert_ref(s);
 387     pa_assert(PA_SOURCE_LINKED(s->state));
 388
 389     old_muted = s->muted;
 390
 391     if (s->get_mute && s->get_mute(s) < 0)
 392         s->get_mute = NULL;
 393
 394     if (!s->get_mute && s->refresh_muted)
 395         pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &s->muted, 0, NULL);
 396
 397     if (old_muted != s->muted)
 398         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 399
 400     return s->muted;
 401 }
 402
 403 void pa_source_set_module(pa_source *s, pa_module *m) {
 404     pa_source_assert_ref(s);
 405
 406     if (m == s->module)
 407         return;
 408
 409     s->module = m;
 410
 411     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 412 }
 413
 414 void pa_source_set_description(pa_source *s, const char *description) {
 415     pa_source_assert_ref(s);
 416
 417     if (!description && !s->description)
 418         return;
 419
 420     if (description && s->description && !strcmp(description, s->description))
 421         return;
 422
 423     pa_xfree(s->description);
 424     s->description = pa_xstrdup(description);
 425
 426     if (PA_SOURCE_LINKED(s->state)) {
 427         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_DESCRIPTION_CHANGED], s);
 428         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 429     }
 430 }
 431
 432 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
 433     pa_source_assert_ref(s);
 434     pa_assert(q);
 435
 436     s->asyncmsgq = q;
 437 }
 438
 439 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
 440     pa_source_assert_ref(s);
 441     pa_assert(p);
 442
 443     s->rtpoll = p;
 444 }
 445
 446 unsigned pa_source_linked_by(pa_source *s) {
 447     pa_source_assert_ref(s);
 448     pa_assert(PA_SOURCE_LINKED(s->state));
 449
 450     return pa_idxset_size(s->outputs);
 451 }
 452
 453 unsigned pa_source_used_by(pa_source *s) {
 454     unsigned ret;
 455
 456     pa_source_assert_ref(s);
 457     pa_assert(PA_SOURCE_LINKED(s->state));
 458
 459     ret = pa_idxset_size(s->outputs);
 460     pa_assert(ret >= s->n_corked);
 461
 462     return ret - s->n_corked;
 463 }
 464
 465 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
 466     pa_source *s = PA_SOURCE(object);
 467     pa_source_assert_ref(s);
 468     pa_assert(s->thread_info.state != PA_SOURCE_UNLINKED);
 469
 470     switch ((pa_source_message_t) code) {
 471         case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
 472             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 473             pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
 474
 475             pa_assert(!o->thread_info.attached);
 476             o->thread_info.attached = TRUE;
 477
 478             if (o->attach)
 479                 o->attach(o);
 480
 481             return 0;
 482         }
 483
 484         case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
 485             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 486
 487             if (o->detach)
 488                 o->detach(o);
 489
 490             pa_assert(o->thread_info.attached);
 491             o->thread_info.attached = FALSE;
 492
 493             if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
 494                 pa_source_output_unref(o);
 495
 496             return 0;
 497         }
 498
 499         case PA_SOURCE_MESSAGE_SET_VOLUME:
 500             s->thread_info.soft_volume = *((pa_cvolume*) userdata);
 501             return 0;
 502
 503         case PA_SOURCE_MESSAGE_SET_MUTE:
 504             s->thread_info.soft_muted = PA_PTR_TO_UINT(userdata);
 505             return 0;
 506
 507         case PA_SOURCE_MESSAGE_GET_VOLUME:
 508             *((pa_cvolume*) userdata) = s->thread_info.soft_volume;
 509             return 0;
 510
 511         case PA_SOURCE_MESSAGE_GET_MUTE:
 512             *((pa_bool_t*) userdata) = s->thread_info.soft_muted;
 513             return 0;
 514
 515         case PA_SOURCE_MESSAGE_PING:
 516             return 0;
 517
 518         case PA_SOURCE_MESSAGE_SET_STATE:
 519             s->thread_info.state = PA_PTR_TO_UINT(userdata);
 520             return 0;
 521
 522         case PA_SOURCE_MESSAGE_DETACH:
 523
 524             /* We're detaching all our output streams so that the
 525              * asyncmsgq and rtpoll fields can be changed without
 526              * problems */
 527             pa_source_detach_within_thread(s);
 528             break;
 529
 530         case PA_SOURCE_MESSAGE_ATTACH:
 531
 532             /* Reattach all streams */
 533             pa_source_attach_within_thread(s);
 534             break;
 535
 536         case PA_SOURCE_MESSAGE_GET_LATENCY:
 537         case PA_SOURCE_MESSAGE_MAX:
 538             ;
 539     }
 540
 541     return -1;
 542 }
 543
 544 int pa_source_suspend_all(pa_core *c, pa_bool_t suspend) {
 545     uint32_t idx;
 546     pa_source *source;
 547     int ret = 0;
 548
 549     pa_core_assert_ref(c);
 550
 551     for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx)))
 552         ret -= pa_source_suspend(source, suspend) < 0;
 553
 554     return ret;
 555 }
 556
 557 void pa_source_detach(pa_source *s) {
 558     pa_source_assert_ref(s);
 559     pa_assert(PA_SOURCE_LINKED(s->state));
 560
 561     pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL);
 562 }
 563
 564 void pa_source_attach(pa_source *s) {
 565     pa_source_assert_ref(s);
 566     pa_assert(PA_SOURCE_LINKED(s->state));
 567
 568     pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL);
 569 }
 570
 571 void pa_source_detach_within_thread(pa_source *s) {
 572     pa_source_output *o;
 573     void *state = NULL;
 574
 575     pa_source_assert_ref(s);
 576     pa_assert(PA_SOURCE_LINKED(s->thread_info.state));
 577
 578     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 579         if (o->detach)
 580             o->detach(o);
 581 }
 582
 583 void pa_source_attach_within_thread(pa_source *s) {
 584     pa_source_output *o;
 585     void *state = NULL;
 586
 587     pa_source_assert_ref(s);
 588     pa_assert(PA_SOURCE_LINKED(s->thread_info.state));
 589
 590     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 591         if (o->attach)
 592             o->attach(o);
 593
 594 }