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_IDLE;
  88     s->name = pa_xstrdup(name);
  89     s->description = NULL;
  90     s->driver = pa_xstrdup(driver);
  91     s->module = NULL;
  92
  93     s->sample_spec = *spec;
  94     s->channel_map = *map;
  95
  96     s->outputs = pa_idxset_new(NULL, NULL);
  97     s->monitor_of = NULL;
  98
  99     pa_cvolume_reset(&s->volume, spec->channels);
 100     s->muted = 0;
 101     s->refresh_volume = s->refresh_muted = 0;
 102
 103     s->is_hardware = 0;
 104
 105     s->get_latency = NULL;
 106     s->set_volume = NULL;
 107     s->get_volume = NULL;
 108     s->set_mute = NULL;
 109     s->get_mute = NULL;
 110     s->set_state = NULL;
 111     s->userdata = NULL;
 112
 113     s->asyncmsgq = 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     pa_subscription_post(core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
 127
 128     pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW_POST], s);
 129
 130     return s;
 131 }
 132
 133 static int source_set_state(pa_source *s, pa_source_state_t state) {
 134     int ret;
 135
 136     pa_assert(s);
 137
 138     if (s->state == state)
 139         return 0;
 140
 141     if (s->set_state)
 142         if ((ret = s->set_state(s, state)) < 0)
 143             return -1;
 144
 145     if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) < 0)
 146         return -1;
 147
 148     s->state = state;
 149     pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
 150     return 0;
 151 }
 152
 153 void pa_source_disconnect(pa_source *s) {
 154     pa_source_output *o, *j = NULL;
 155
 156     pa_assert(s);
 157     pa_return_if_fail(s->state != PA_SOURCE_DISCONNECTED);
 158
 159     pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_DISCONNECT], s);
 160
 161     pa_namereg_unregister(s->core, s->name);
 162     pa_idxset_remove_by_data(s->core->sources, s, NULL);
 163
 164     while ((o = pa_idxset_first(s->outputs, NULL))) {
 165         pa_assert(o != j);
 166         pa_source_output_kill(o);
 167         j = o;
 168     }
 169
 170     source_set_state(s, PA_SOURCE_DISCONNECTED);
 171
 172     s->get_latency = NULL;
 173     s->get_volume = NULL;
 174     s->set_volume = NULL;
 175     s->set_mute = NULL;
 176     s->get_mute = NULL;
 177     s->set_state = NULL;
 178
 179     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
 180
 181     pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_DISCONNECT_POST], s);
 182 }
 183
 184 static void source_free(pa_object *o) {
 185     pa_source_output *so;
 186     pa_source *s = PA_SOURCE(o);
 187
 188     pa_assert(s);
 189     pa_assert(pa_source_refcnt(s) == 0);
 190
 191     if (s->state != PA_SOURCE_DISCONNECTED)
 192         pa_source_disconnect(s);
 193
 194     pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
 195
 196     pa_idxset_free(s->outputs, NULL, NULL);
 197
 198     while ((so = pa_hashmap_steal_first(s->thread_info.outputs)))
 199         pa_source_output_unref(so);
 200
 201     pa_hashmap_free(s->thread_info.outputs, NULL, NULL);
 202
 203     pa_xfree(s->name);
 204     pa_xfree(s->description);
 205     pa_xfree(s->driver);
 206     pa_xfree(s);
 207 }
 208
 209 int pa_source_update_status(pa_source*s) {
 210     pa_source_assert_ref(s);
 211
 212     if (s->state == PA_SOURCE_SUSPENDED)
 213         return 0;
 214
 215     return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
 216 }
 217
 218 int pa_source_suspend(pa_source *s, int suspend) {
 219     pa_source_assert_ref(s);
 220
 221     if (suspend)
 222         return source_set_state(s, PA_SOURCE_SUSPENDED);
 223     else
 224         return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
 225 }
 226
 227 void pa_source_ping(pa_source *s) {
 228     pa_source_assert_ref(s);
 229
 230     pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_PING, NULL, 0, NULL, NULL);
 231 }
 232
 233 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
 234     pa_source_output *o;
 235     void *state = NULL;
 236
 237     pa_source_assert_ref(s);
 238     pa_assert(chunk);
 239
 240     if (s->thread_info.state != PA_SOURCE_RUNNING)
 241         return;
 242
 243     if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
 244         pa_memchunk vchunk = *chunk;
 245
 246         pa_memblock_ref(vchunk.memblock);
 247         pa_memchunk_make_writable(&vchunk, 0);
 248
 249         if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
 250             pa_silence_memchunk(&vchunk, &s->sample_spec);
 251         else
 252             pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
 253
 254         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 255             pa_source_output_push(o, &vchunk);
 256
 257         pa_memblock_unref(vchunk.memblock);
 258     } else {
 259
 260         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 261             pa_source_output_push(o, chunk);
 262
 263     }
 264 }
 265
 266 pa_usec_t pa_source_get_latency(pa_source *s) {
 267     pa_usec_t usec;
 268
 269     pa_source_assert_ref(s);
 270
 271     if (s->get_latency)
 272         return s->get_latency(s);
 273
 274     if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
 275         return 0;
 276
 277     return usec;
 278 }
 279
 280 void pa_source_set_volume(pa_source *s, const pa_cvolume *volume) {
 281     int changed;
 282
 283     pa_source_assert_ref(s);
 284     pa_assert(volume);
 285
 286     changed = !pa_cvolume_equal(volume, &s->volume);
 287     s->volume = *volume;
 288
 289     if (s->set_volume && s->set_volume(s) < 0)
 290         s->set_volume = NULL;
 291
 292     if (!s->set_volume)
 293         pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, pa_xnewdup(struct pa_cvolume, volume, 1), 0, NULL, pa_xfree);
 294
 295     if (changed)
 296         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 297 }
 298
 299 const pa_cvolume *pa_source_get_volume(pa_source *s) {
 300     pa_cvolume old_volume;
 301     pa_source_assert_ref(s);
 302
 303     old_volume = s->volume;
 304
 305     if (s->get_volume && s->get_volume(s) < 0)
 306         s->get_volume = NULL;
 307
 308     if (!s->get_volume && s->refresh_volume)
 309         pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, &s->volume, 0, NULL);
 310
 311     if (!pa_cvolume_equal(&old_volume, &s->volume))
 312         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 313
 314     return &s->volume;
 315 }
 316
 317 void pa_source_set_mute(pa_source *s, int mute) {
 318     int changed;
 319
 320     pa_source_assert_ref(s);
 321
 322     changed = s->muted != mute;
 323
 324     if (s->set_mute && s->set_mute(s) < 0)
 325         s->set_mute = NULL;
 326
 327     if (!s->set_mute)
 328         pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL);
 329
 330     if (changed)
 331         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 332 }
 333
 334 int pa_source_get_mute(pa_source *s) {
 335     int old_muted;
 336
 337     pa_source_assert_ref(s);
 338
 339     old_muted = s->muted;
 340
 341     if (s->get_mute && s->get_mute(s) < 0)
 342         s->get_mute = NULL;
 343
 344     if (!s->get_mute && s->refresh_muted)
 345         pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &s->muted, 0, NULL);
 346
 347     if (old_muted != s->muted)
 348         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 349
 350     return s->muted;
 351 }
 352
 353 void pa_source_set_module(pa_source *s, pa_module *m) {
 354     pa_source_assert_ref(s);
 355
 356     if (m == s->module)
 357         return;
 358
 359     s->module = m;
 360
 361     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 362 }
 363
 364 void pa_source_set_description(pa_source *s, const char *description) {
 365     pa_source_assert_ref(s);
 366
 367     if (!description && !s->description)
 368         return;
 369
 370     if (description && s->description && !strcmp(description, s->description))
 371         return;
 372
 373     pa_xfree(s->description);
 374     s->description = pa_xstrdup(description);
 375
 376     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 377 }
 378
 379 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
 380     pa_source_assert_ref(s);
 381     pa_assert(q);
 382
 383     s->asyncmsgq = q;
 384 }
 385
 386 unsigned pa_source_used_by(pa_source *s) {
 387     pa_source_assert_ref(s);
 388
 389     return pa_idxset_size(s->outputs);
 390 }
 391
 392 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
 393     pa_source *s = PA_SOURCE(object);
 394     pa_source_assert_ref(s);
 395
 396     switch ((pa_source_message_t) code) {
 397         case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
 398             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 399             pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
 400             return 0;
 401         }
 402
 403         case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
 404             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 405             if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
 406                 pa_source_output_unref(o);
 407
 408             return 0;
 409         }
 410
 411         case PA_SOURCE_MESSAGE_SET_VOLUME:
 412             s->thread_info.soft_volume = *((pa_cvolume*) userdata);
 413             return 0;
 414
 415         case PA_SOURCE_MESSAGE_SET_MUTE:
 416             s->thread_info.soft_muted = PA_PTR_TO_UINT(userdata);
 417             return 0;
 418
 419         case PA_SOURCE_MESSAGE_GET_VOLUME:
 420             *((pa_cvolume*) userdata) = s->thread_info.soft_volume;
 421             return 0;
 422
 423         case PA_SOURCE_MESSAGE_GET_MUTE:
 424             *((int*) userdata) = s->thread_info.soft_muted;
 425             return 0;
 426
 427         case PA_SOURCE_MESSAGE_PING:
 428             return 0;
 429
 430         case PA_SOURCE_MESSAGE_SET_STATE:
 431             s->thread_info.state = PA_PTR_TO_UINT(userdata);
 432             return 0;
 433
 434         case PA_SOURCE_MESSAGE_GET_LATENCY:
 435         case PA_SOURCE_MESSAGE_MAX:
 436             ;
 437     }
 438
 439     return -1;
 440 }