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 <assert.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33
  34 #include <pulse/utf8.h>
  35 #include <pulse/xmalloc.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 static PA_DEFINE_CHECK_TYPE(pa_source, pa_msgobject);
  46
  47 static void source_free(pa_object *o);
  48
  49 pa_source* pa_source_new(
  50         pa_core *core,
  51         const char *driver,
  52         const char *name,
  53         int fail,
  54         const pa_sample_spec *spec,
  55         const pa_channel_map *map) {
  56
  57     pa_source *s;
  58     char st[256];
  59     int r;
  60     pa_channel_map tmap;
  61
  62     assert(core);
  63     assert(name);
  64     assert(spec);
  65
  66     pa_return_null_if_fail(pa_sample_spec_valid(spec));
  67
  68     if (!map)
  69         map = pa_channel_map_init_auto(&tmap, spec->channels, PA_CHANNEL_MAP_DEFAULT);
  70
  71     pa_return_null_if_fail(map && pa_channel_map_valid(map));
  72     pa_return_null_if_fail(map->channels == spec->channels);
  73     pa_return_null_if_fail(!driver || pa_utf8_valid(driver));
  74     pa_return_null_if_fail(pa_utf8_valid(name) && *name);
  75
  76     s = pa_msgobject_new(pa_source);
  77
  78     if (!(name = pa_namereg_register(core, name, PA_NAMEREG_SOURCE, s, fail))) {
  79         pa_xfree(s);
  80         return NULL;
  81     }
  82
  83     s->parent.parent.free = source_free;
  84     s->parent.process_msg = pa_source_process_msg;
  85
  86     s->core = core;
  87     s->state = PA_SOURCE_INIT;
  88     s->flags = 0;
  89     s->name = pa_xstrdup(name);
  90     s->description = NULL;
  91     s->driver = pa_xstrdup(driver);
  92     s->module = NULL;
  93
  94     s->sample_spec = *spec;
  95     s->channel_map = *map;
  96
  97     s->outputs = pa_idxset_new(NULL, NULL);
  98     s->monitor_of = NULL;
  99
 100     pa_cvolume_reset(&s->volume, spec->channels);
 101     s->muted = 0;
 102     s->refresh_volume = s->refresh_muted = 0;
 103
 104     s->get_latency = NULL;
 105     s->set_volume = NULL;
 106     s->get_volume = NULL;
 107     s->set_mute = NULL;
 108     s->get_mute = NULL;
 109     s->set_state = NULL;
 110     s->userdata = NULL;
 111
 112     s->asyncmsgq = NULL;
 113     s->rtpoll = NULL;
 114
 115     r = pa_idxset_put(core->sources, s, &s->index);
 116     assert(s->index != PA_IDXSET_INVALID && r >= 0);
 117
 118     pa_sample_spec_snprint(st, sizeof(st), spec);
 119     pa_log_info("Created source %u \"%s\" with sample spec \"%s\"", s->index, s->name, st);
 120
 121     s->thread_info.outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 122     s->thread_info.soft_volume = s->volume;
 123     s->thread_info.soft_muted = s->muted;
 124     s->thread_info.state = s->state;
 125
 126     return s;
 127 }
 128
 129 void pa_source_put(pa_source *s) {
 130     pa_source_assert_ref(s);
 131
 132     pa_assert(s->state == PA_SINK_INIT);
 133     pa_assert(s->rtpoll);
 134     pa_assert(s->asyncmsgq);
 135
 136     s->thread_info.state = s->state = PA_SOURCE_IDLE;
 137
 138     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
 139     pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_NEW_POST], s);
 140 }
 141
 142 static int source_set_state(pa_source *s, pa_source_state_t state) {
 143     int ret;
 144
 145     pa_assert(s);
 146
 147     if (s->state == state)
 148         return 0;
 149
 150     if (state == PA_SOURCE_SUSPENDED && !(s->flags & PA_SOURCE_CAN_SUSPEND))
 151         return -1;
 152
 153     if ((s->state == PA_SOURCE_SUSPENDED && PA_SOURCE_OPENED(state)) ||
 154         (PA_SOURCE_OPENED(s->state) && state == PA_SOURCE_SUSPENDED)) {
 155         pa_source_output *o;
 156         uint32_t idx;
 157
 158         /* We're suspending or resuming, tell everyone about it */
 159
 160         for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx)))
 161             if (o->suspend)
 162                 o->suspend(o, state == PA_SINK_SUSPENDED);
 163     }
 164
 165     if (s->set_state)
 166         if ((ret = s->set_state(s, state)) < 0)
 167             return -1;
 168
 169     if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) < 0)
 170         return -1;
 171
 172     s->state = state;
 173
 174     if (state != PA_SOURCE_UNLINKED) /* if we enter UNLINKED state pa_source_unlink() will fire the apropriate events */
 175         pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
 176     return 0;
 177 }
 178
 179 void pa_source_unlink(pa_source *s) {
 180     pa_source_output *o, *j = NULL;
 181
 182     pa_assert(s);
 183     pa_assert(PA_SOURCE_LINKED(s->state));
 184
 185     pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
 186
 187     pa_namereg_unregister(s->core, s->name);
 188     pa_idxset_remove_by_data(s->core->sources, s, NULL);
 189
 190     while ((o = pa_idxset_first(s->outputs, NULL))) {
 191         pa_assert(o != j);
 192         pa_source_output_kill(o);
 193         j = o;
 194     }
 195
 196     source_set_state(s, PA_SOURCE_UNLINKED);
 197
 198     s->get_latency = NULL;
 199     s->get_volume = NULL;
 200     s->set_volume = NULL;
 201     s->set_mute = NULL;
 202     s->get_mute = NULL;
 203     s->set_state = NULL;
 204
 205     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
 206
 207     pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
 208 }
 209
 210 static void source_free(pa_object *o) {
 211     pa_source_output *so;
 212     pa_source *s = PA_SOURCE(o);
 213
 214     pa_assert(s);
 215     pa_assert(pa_source_refcnt(s) == 0);
 216
 217     if (PA_SOURCE_LINKED(s->state))
 218         pa_source_unlink(s);
 219
 220     pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
 221
 222     pa_idxset_free(s->outputs, NULL, NULL);
 223
 224     while ((so = pa_hashmap_steal_first(s->thread_info.outputs)))
 225         pa_source_output_unref(so);
 226
 227     pa_hashmap_free(s->thread_info.outputs, NULL, NULL);
 228
 229     pa_xfree(s->name);
 230     pa_xfree(s->description);
 231     pa_xfree(s->driver);
 232     pa_xfree(s);
 233 }
 234
 235 int pa_source_update_status(pa_source*s) {
 236     pa_source_assert_ref(s);
 237     pa_assert(PA_SOURCE_LINKED(s->state));
 238
 239     if (s->state == PA_SOURCE_SUSPENDED)
 240         return 0;
 241
 242     return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
 243 }
 244
 245 int pa_source_suspend(pa_source *s, int suspend) {
 246     pa_source_assert_ref(s);
 247     pa_assert(PA_SOURCE_LINKED(s->state));
 248
 249     if (suspend)
 250         return source_set_state(s, PA_SOURCE_SUSPENDED);
 251     else
 252         return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
 253 }
 254
 255 void pa_source_ping(pa_source *s) {
 256     pa_source_assert_ref(s);
 257     pa_assert(PA_SOURCE_LINKED(s->state));
 258
 259     pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_PING, NULL, 0, NULL, NULL);
 260 }
 261
 262 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
 263     pa_source_output *o;
 264     void *state = NULL;
 265
 266     pa_source_assert_ref(s);
 267     pa_assert(PA_SOURCE_OPENED(s->thread_info.state));
 268     pa_assert(chunk);
 269
 270     if (s->thread_info.state != PA_SOURCE_RUNNING)
 271         return;
 272
 273     if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
 274         pa_memchunk vchunk = *chunk;
 275
 276         pa_memblock_ref(vchunk.memblock);
 277         pa_memchunk_make_writable(&vchunk, 0);
 278
 279         if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
 280             pa_silence_memchunk(&vchunk, &s->sample_spec);
 281         else
 282             pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
 283
 284         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 285             pa_source_output_push(o, &vchunk);
 286
 287         pa_memblock_unref(vchunk.memblock);
 288     } else {
 289
 290         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 291             pa_source_output_push(o, chunk);
 292
 293     }
 294 }
 295
 296 pa_usec_t pa_source_get_latency(pa_source *s) {
 297     pa_usec_t usec;
 298
 299     pa_source_assert_ref(s);
 300     pa_assert(PA_SOURCE_LINKED(s->state));
 301
 302     if (!PA_SOURCE_OPENED(s->state))
 303         return 0;
 304
 305     if (s->get_latency)
 306         return s->get_latency(s);
 307
 308     if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
 309         return 0;
 310
 311     return usec;
 312 }
 313
 314 void pa_source_set_volume(pa_source *s, const pa_cvolume *volume) {
 315     int changed;
 316
 317     pa_source_assert_ref(s);
 318     pa_assert(PA_SOURCE_LINKED(s->state));
 319     pa_assert(volume);
 320
 321     changed = !pa_cvolume_equal(volume, &s->volume);
 322     s->volume = *volume;
 323
 324     if (s->set_volume && s->set_volume(s) < 0)
 325         s->set_volume = NULL;
 326
 327     if (!s->set_volume)
 328         pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, pa_xnewdup(struct pa_cvolume, volume, 1), 0, NULL, pa_xfree);
 329
 330     if (changed)
 331         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 332 }
 333
 334 const pa_cvolume *pa_source_get_volume(pa_source *s) {
 335     pa_cvolume old_volume;
 336
 337     pa_source_assert_ref(s);
 338     pa_assert(PA_SOURCE_LINKED(s->state));
 339
 340     old_volume = s->volume;
 341
 342     if (s->get_volume && s->get_volume(s) < 0)
 343         s->get_volume = NULL;
 344
 345     if (!s->get_volume && s->refresh_volume)
 346         pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, &s->volume, 0, NULL);
 347
 348     if (!pa_cvolume_equal(&old_volume, &s->volume))
 349         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 350
 351     return &s->volume;
 352 }
 353
 354 void pa_source_set_mute(pa_source *s, int mute) {
 355     int changed;
 356
 357     pa_source_assert_ref(s);
 358     pa_assert(PA_SOURCE_LINKED(s->state));
 359
 360     changed = s->muted != mute;
 361     s->muted = mute;
 362
 363     if (s->set_mute && s->set_mute(s) < 0)
 364         s->set_mute = NULL;
 365
 366     if (!s->set_mute)
 367         pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL);
 368
 369     if (changed)
 370         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 371 }
 372
 373 int pa_source_get_mute(pa_source *s) {
 374     int old_muted;
 375
 376     pa_source_assert_ref(s);
 377     pa_assert(PA_SOURCE_LINKED(s->state));
 378
 379     old_muted = s->muted;
 380
 381     if (s->get_mute && s->get_mute(s) < 0)
 382         s->get_mute = NULL;
 383
 384     if (!s->get_mute && s->refresh_muted)
 385         pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &s->muted, 0, NULL);
 386
 387     if (old_muted != s->muted)
 388         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 389
 390     return s->muted;
 391 }
 392
 393 void pa_source_set_module(pa_source *s, pa_module *m) {
 394     pa_source_assert_ref(s);
 395
 396     if (m == s->module)
 397         return;
 398
 399     s->module = m;
 400
 401     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 402 }
 403
 404 void pa_source_set_description(pa_source *s, const char *description) {
 405     pa_source_assert_ref(s);
 406
 407     if (!description && !s->description)
 408         return;
 409
 410     if (description && s->description && !strcmp(description, s->description))
 411         return;
 412
 413     pa_xfree(s->description);
 414     s->description = pa_xstrdup(description);
 415
 416     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 417 }
 418
 419 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
 420     pa_source_assert_ref(s);
 421     pa_assert(q);
 422
 423     s->asyncmsgq = q;
 424 }
 425
 426 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
 427     pa_source_assert_ref(s);
 428     pa_assert(p);
 429
 430     s->rtpoll = p;
 431 }
 432
 433 unsigned pa_source_used_by(pa_source *s) {
 434     pa_source_assert_ref(s);
 435     pa_assert(PA_SOURCE_LINKED(s->state));
 436
 437     return pa_idxset_size(s->outputs);
 438 }
 439
 440 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
 441     pa_source *s = PA_SOURCE(object);
 442     pa_source_assert_ref(s);
 443     pa_assert(PA_SOURCE_LINKED(s->thread_info.state));
 444
 445     switch ((pa_source_message_t) code) {
 446         case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
 447             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 448             pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
 449
 450             if (o->attach)
 451                 o->attach(o);
 452
 453             return 0;
 454         }
 455
 456         case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
 457             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 458
 459             if (o->detach)
 460                 o->detach(o);
 461
 462             if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
 463                 pa_source_output_unref(o);
 464
 465             return 0;
 466         }
 467
 468         case PA_SOURCE_MESSAGE_SET_VOLUME:
 469             s->thread_info.soft_volume = *((pa_cvolume*) userdata);
 470             return 0;
 471
 472         case PA_SOURCE_MESSAGE_SET_MUTE:
 473             s->thread_info.soft_muted = PA_PTR_TO_UINT(userdata);
 474             return 0;
 475
 476         case PA_SOURCE_MESSAGE_GET_VOLUME:
 477             *((pa_cvolume*) userdata) = s->thread_info.soft_volume;
 478             return 0;
 479
 480         case PA_SOURCE_MESSAGE_GET_MUTE:
 481             *((int*) userdata) = s->thread_info.soft_muted;
 482             return 0;
 483
 484         case PA_SOURCE_MESSAGE_PING:
 485             return 0;
 486
 487         case PA_SOURCE_MESSAGE_SET_STATE:
 488             s->thread_info.state = PA_PTR_TO_UINT(userdata);
 489             return 0;
 490
 491         case PA_SOURCE_MESSAGE_GET_LATENCY:
 492         case PA_SOURCE_MESSAGE_MAX:
 493             ;
 494     }
 495
 496     return -1;
 497 }
 498
 499 int pa_source_suspend_all(pa_core *c, int suspend) {
 500     uint32_t idx;
 501     pa_source *source;
 502     int ret = 0;
 503
 504     pa_core_assert_ref(c);
 505
 506     for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx)))
 507         ret -= pa_source_suspend(source, suspend) < 0;
 508
 509     return ret;
 510 }
 511
 512 int pa_source_process_outputs(pa_source *s) {
 513     pa_source_output *o;
 514     void *state = NULL;
 515     int r;
 516
 517     pa_source_assert_ref(s);
 518
 519     if (!PA_SOURCE_LINKED(s->state))
 520         return 0;
 521
 522     while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 523         if (o->process)
 524             if ((r = o->process(o)))
 525                 return r;
 526
 527     return 0;
 528 }