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     if (pa_hook_fire(&core->hook_sink_new, NULL) < 0) /* FIXME */
  77         return NULL;
  78
  79     s = pa_msgobject_new(pa_source);
  80
  81     if (!(name = pa_namereg_register(core, name, PA_NAMEREG_SOURCE, s, fail))) {
  82         pa_xfree(s);
  83         return NULL;
  84     }
  85
  86     s->parent.parent.free = source_free;
  87     s->parent.process_msg = pa_source_process_msg;
  88
  89     s->core = core;
  90     s->state = PA_SOURCE_IDLE;
  91     s->name = pa_xstrdup(name);
  92     s->description = NULL;
  93     s->driver = pa_xstrdup(driver);
  94     s->module = NULL;
  95
  96     s->sample_spec = *spec;
  97     s->channel_map = *map;
  98
  99     s->outputs = pa_idxset_new(NULL, NULL);
 100     s->monitor_of = NULL;
 101
 102     pa_cvolume_reset(&s->volume, spec->channels);
 103     s->muted = 0;
 104     s->refresh_volume = s->refresh_muted = 0;
 105
 106     s->is_hardware = 0;
 107
 108     s->get_latency = NULL;
 109     s->set_volume = NULL;
 110     s->get_volume = NULL;
 111     s->set_mute = NULL;
 112     s->get_mute = NULL;
 113     s->set_state = NULL;
 114     s->userdata = NULL;
 115
 116     s->asyncmsgq = NULL;
 117
 118     r = pa_idxset_put(core->sources, s, &s->index);
 119     assert(s->index != PA_IDXSET_INVALID && r >= 0);
 120
 121     pa_sample_spec_snprint(st, sizeof(st), spec);
 122     pa_log_info("Created source %u \"%s\" with sample spec \"%s\"", s->index, s->name, st);
 123
 124     s->thread_info.outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 125     s->thread_info.soft_volume = s->volume;
 126     s->thread_info.soft_muted = s->muted;
 127     s->thread_info.state = s->state;
 128
 129     pa_subscription_post(core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
 130
 131     pa_hook_fire(&core->hook_source_new_post, s);
 132
 133     return s;
 134 }
 135
 136 static int source_set_state(pa_source *s, pa_source_state_t state) {
 137     int ret;
 138
 139     pa_assert(s);
 140
 141     if (s->state == state)
 142         return 0;
 143
 144     if (s->set_state)
 145         if ((ret = s->set_state(s, state)) < 0)
 146             return -1;
 147
 148     if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) < 0)
 149         return -1;
 150
 151     s->state = state;
 152     return 0;
 153 }
 154
 155 void pa_source_disconnect(pa_source *s) {
 156     pa_source_output *o, *j = NULL;
 157
 158     pa_assert(s);
 159     pa_return_if_fail(s->state != PA_SOURCE_DISCONNECTED);
 160
 161     pa_hook_fire(&s->core->hook_source_disconnect, s);
 162
 163     pa_namereg_unregister(s->core, s->name);
 164     pa_idxset_remove_by_data(s->core->sources, s, NULL);
 165
 166     while ((o = pa_idxset_first(s->outputs, NULL))) {
 167         pa_assert(o != j);
 168         pa_source_output_kill(o);
 169         j = o;
 170     }
 171
 172     source_set_state(s, PA_SOURCE_DISCONNECTED);
 173
 174     s->get_latency = NULL;
 175     s->get_volume = NULL;
 176     s->set_volume = NULL;
 177     s->set_mute = NULL;
 178     s->get_mute = NULL;
 179     s->set_state = NULL;
 180
 181     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
 182
 183     pa_hook_fire(&s->core->hook_source_disconnect_post, s);
 184 }
 185
 186 static void source_free(pa_object *o) {
 187     pa_source_output *so;
 188     pa_source *s = PA_SOURCE(o);
 189
 190     pa_assert(s);
 191     pa_assert(pa_source_refcnt(s) == 0);
 192
 193     if (s->state != PA_SOURCE_DISCONNECTED)
 194         pa_source_disconnect(s);
 195
 196     pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
 197
 198     pa_idxset_free(s->outputs, NULL, NULL);
 199
 200     while ((so = pa_hashmap_steal_first(s->thread_info.outputs)))
 201         pa_source_output_unref(so);
 202
 203     pa_hashmap_free(s->thread_info.outputs, NULL, NULL);
 204
 205     pa_xfree(s->name);
 206     pa_xfree(s->description);
 207     pa_xfree(s->driver);
 208     pa_xfree(s);
 209 }
 210
 211 int pa_source_update_status(pa_source*s) {
 212     pa_source_assert_ref(s);
 213
 214     if (s->state == PA_SOURCE_SUSPENDED)
 215         return 0;
 216
 217     return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
 218 }
 219
 220 int pa_source_suspend(pa_source *s, int suspend) {
 221     pa_source_assert_ref(s);
 222
 223     if (suspend)
 224         return source_set_state(s, PA_SOURCE_SUSPENDED);
 225     else
 226         return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE);
 227 }
 228
 229 void pa_source_ping(pa_source *s) {
 230     pa_source_assert_ref(s);
 231
 232     pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_PING, NULL, 0, NULL, NULL);
 233 }
 234
 235 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
 236     pa_source_output *o;
 237     void *state = NULL;
 238
 239     pa_source_assert_ref(s);
 240     pa_assert(chunk);
 241
 242     if (s->thread_info.state != PA_SOURCE_RUNNING)
 243         return;
 244
 245     if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
 246         pa_memchunk vchunk = *chunk;
 247
 248         pa_memblock_ref(vchunk.memblock);
 249         pa_memchunk_make_writable(&vchunk, 0);
 250
 251         if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
 252             pa_silence_memchunk(&vchunk, &s->sample_spec);
 253         else
 254             pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
 255
 256         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 257             pa_source_output_push(o, &vchunk);
 258
 259         pa_memblock_unref(vchunk.memblock);
 260     } else {
 261
 262         while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
 263             pa_source_output_push(o, chunk);
 264
 265     }
 266 }
 267
 268 pa_usec_t pa_source_get_latency(pa_source *s) {
 269     pa_usec_t usec;
 270
 271     pa_source_assert_ref(s);
 272
 273     if (s->get_latency)
 274         return s->get_latency(s);
 275
 276     if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
 277         return 0;
 278
 279     return usec;
 280 }
 281
 282 void pa_source_set_volume(pa_source *s, const pa_cvolume *volume) {
 283     int changed;
 284
 285     pa_source_assert_ref(s);
 286     pa_assert(volume);
 287
 288     changed = !pa_cvolume_equal(volume, &s->volume);
 289     s->volume = *volume;
 290
 291     if (s->set_volume && s->set_volume(s) < 0)
 292         s->set_volume = NULL;
 293
 294     if (!s->set_volume)
 295         pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, pa_xnewdup(struct pa_cvolume, volume, 1), 0, NULL, pa_xfree);
 296
 297     if (changed)
 298         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 299 }
 300
 301 const pa_cvolume *pa_source_get_volume(pa_source *s) {
 302     pa_cvolume old_volume;
 303     pa_source_assert_ref(s);
 304
 305     old_volume = s->volume;
 306
 307     if (s->get_volume && s->get_volume(s) < 0)
 308         s->get_volume = NULL;
 309
 310     if (!s->get_volume && s->refresh_volume)
 311         pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, &s->volume, 0, NULL);
 312
 313     if (!pa_cvolume_equal(&old_volume, &s->volume))
 314         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 315
 316     return &s->volume;
 317 }
 318
 319 void pa_source_set_mute(pa_source *s, int mute) {
 320     int changed;
 321
 322     pa_source_assert_ref(s);
 323
 324     changed = s->muted != mute;
 325
 326     if (s->set_mute && s->set_mute(s) < 0)
 327         s->set_mute = NULL;
 328
 329     if (!s->set_mute)
 330         pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL);
 331
 332     if (changed)
 333         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 334 }
 335
 336 int pa_source_get_mute(pa_source *s) {
 337     int old_muted;
 338
 339     pa_source_assert_ref(s);
 340
 341     old_muted = s->muted;
 342
 343     if (s->get_mute && s->get_mute(s) < 0)
 344         s->get_mute = NULL;
 345
 346     if (!s->get_mute && s->refresh_muted)
 347         pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &s->muted, 0, NULL);
 348
 349     if (old_muted != s->muted)
 350         pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 351
 352     return s->muted;
 353 }
 354
 355 void pa_source_set_module(pa_source *s, pa_module *m) {
 356     pa_source_assert_ref(s);
 357
 358     if (m == s->module)
 359         return;
 360
 361     s->module = m;
 362
 363     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 364 }
 365
 366 void pa_source_set_description(pa_source *s, const char *description) {
 367     pa_source_assert_ref(s);
 368
 369     if (!description && !s->description)
 370         return;
 371
 372     if (description && s->description && !strcmp(description, s->description))
 373         return;
 374
 375     pa_xfree(s->description);
 376     s->description = pa_xstrdup(description);
 377
 378     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 379 }
 380
 381 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
 382     pa_source_assert_ref(s);
 383     pa_assert(q);
 384
 385     s->asyncmsgq = q;
 386 }
 387
 388 unsigned pa_source_used_by(pa_source *s) {
 389     pa_source_assert_ref(s);
 390
 391     return pa_idxset_size(s->outputs);
 392 }
 393
 394 int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
 395     pa_source *s = PA_SOURCE(object);
 396     pa_source_assert_ref(s);
 397
 398     switch ((pa_source_message_t) code) {
 399         case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
 400             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 401             pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
 402             return 0;
 403         }
 404
 405         case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
 406             pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
 407             if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
 408                 pa_source_output_unref(o);
 409
 410             return 0;
 411         }
 412
 413         case PA_SOURCE_MESSAGE_SET_VOLUME:
 414             s->thread_info.soft_volume = *((pa_cvolume*) userdata);
 415             return 0;
 416
 417         case PA_SOURCE_MESSAGE_SET_MUTE:
 418             s->thread_info.soft_muted = PA_PTR_TO_UINT(userdata);
 419             return 0;
 420
 421         case PA_SOURCE_MESSAGE_GET_VOLUME:
 422             *((pa_cvolume*) userdata) = s->thread_info.soft_volume;
 423             return 0;
 424
 425         case PA_SOURCE_MESSAGE_GET_MUTE:
 426             *((int*) userdata) = s->thread_info.soft_muted;
 427             return 0;
 428
 429         case PA_SOURCE_MESSAGE_PING:
 430             return 0;
 431
 432         case PA_SOURCE_MESSAGE_SET_STATE:
 433             s->thread_info.state = PA_PTR_TO_UINT(userdata);
 434             return 0;
 435
 436         case PA_SOURCE_MESSAGE_GET_LATENCY:
 437         case PA_SOURCE_MESSAGE_MAX:
 438             ;
 439     }
 440
 441     return -1;
 442 }