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