code.delx.au - pulseaudio/blob - src/pulsecore/core.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   PulseAudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with PulseAudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdlib.h>
  27 #include <assert.h>
  28 #include <stdio.h>
  29 #include <signal.h>
  30
  31 #include <pulse/timeval.h>
  32 #include <pulse/xmalloc.h>
  33
  34 #include <pulsecore/module.h>
  35 #include <pulsecore/sink.h>
  36 #include <pulsecore/source.h>
  37 #include <pulsecore/namereg.h>
  38 #include <pulsecore/core-util.h>
  39 #include <pulsecore/core-scache.h>
  40 #include <pulsecore/autoload.h>
  41 #include <pulsecore/core-subscribe.h>
  42 #include <pulsecore/props.h>
  43 #include <pulsecore/random.h>
  44
  45 #include "core.h"
  46
  47 pa_core* pa_core_new(pa_mainloop_api *m) {
  48     pa_core* c;
  49
  50     c = pa_xnew(pa_core, 1);
  51
  52     c->mainloop = m;
  53     c->clients = pa_idxset_new(NULL, NULL);
  54     c->sinks = pa_idxset_new(NULL, NULL);
  55     c->sources = pa_idxset_new(NULL, NULL);
  56     c->source_outputs = pa_idxset_new(NULL, NULL);
  57     c->sink_inputs = pa_idxset_new(NULL, NULL);
  58
  59     c->default_source_name = c->default_sink_name = NULL;
  60
  61     c->modules = NULL;
  62     c->namereg = NULL;
  63     c->scache = NULL;
  64     c->autoload_idxset = NULL;
  65     c->autoload_hashmap = NULL;
  66     c->running_as_daemon = 0;
  67
  68     c->default_sample_spec.format = PA_SAMPLE_S16NE;
  69     c->default_sample_spec.rate = 44100;
  70     c->default_sample_spec.channels = 2;
  71
  72     c->module_auto_unload_event = NULL;
  73     c->module_defer_unload_event = NULL;
  74     c->scache_auto_unload_event = NULL;
  75
  76     c->subscription_defer_event = NULL;
  77     PA_LLIST_HEAD_INIT(pa_subscription, c->subscriptions);
  78     PA_LLIST_HEAD_INIT(pa_subscription_event, c->subscription_event_queue);
  79     c->subscription_event_last = NULL;
  80
  81     c->memblock_stat = pa_memblock_stat_new();
  82
  83     c->disallow_module_loading = 0;
  84
  85     c->quit_event = NULL;
  86
  87     c->exit_idle_time = -1;
  88     c->module_idle_time = 20;
  89     c->scache_idle_time = 20;
  90
  91     c->resample_method = PA_RESAMPLER_SRC_SINC_FASTEST;
  92
  93     c->is_system_instance = 0;
  94
  95     pa_hook_init(&c->hook_sink_input_new, c);
  96     pa_hook_init(&c->hook_sink_disconnect, c);
  97
  98     pa_property_init(c);
  99
 100     pa_random(&c->cookie, sizeof(c->cookie));
 101
 102 #ifdef SIGPIPE
 103     pa_check_signal_is_blocked(SIGPIPE);
 104 #endif
 105     return c;
 106 }
 107
 108 void pa_core_free(pa_core *c) {
 109     assert(c);
 110
 111     pa_module_unload_all(c);
 112     assert(!c->modules);
 113
 114     assert(pa_idxset_isempty(c->clients));
 115     pa_idxset_free(c->clients, NULL, NULL);
 116
 117     assert(pa_idxset_isempty(c->sinks));
 118     pa_idxset_free(c->sinks, NULL, NULL);
 119
 120     assert(pa_idxset_isempty(c->sources));
 121     pa_idxset_free(c->sources, NULL, NULL);
 122
 123     assert(pa_idxset_isempty(c->source_outputs));
 124     pa_idxset_free(c->source_outputs, NULL, NULL);
 125
 126     assert(pa_idxset_isempty(c->sink_inputs));
 127     pa_idxset_free(c->sink_inputs, NULL, NULL);
 128
 129     pa_scache_free(c);
 130     pa_namereg_free(c);
 131     pa_autoload_free(c);
 132     pa_subscription_free_all(c);
 133
 134     if (c->quit_event)
 135         c->mainloop->time_free(c->quit_event);
 136
 137     pa_xfree(c->default_source_name);
 138     pa_xfree(c->default_sink_name);
 139
 140     pa_memblock_stat_unref(c->memblock_stat);
 141
 142     pa_property_cleanup(c);
 143
 144     pa_hook_free(&c->hook_sink_input_new);
 145     pa_hook_free(&c->hook_sink_disconnect);
 146
 147     pa_xfree(c);
 148 }
 149
 150 static void quit_callback(pa_mainloop_api*m, pa_time_event *e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
 151     pa_core *c = userdata;
 152     assert(c->quit_event = e);
 153
 154     m->quit(m, 0);
 155 }
 156
 157 void pa_core_check_quit(pa_core *c) {
 158     assert(c);
 159
 160     if (!c->quit_event && c->exit_idle_time >= 0 && pa_idxset_size(c->clients) == 0) {
 161         struct timeval tv;
 162         pa_gettimeofday(&tv);
 163         tv.tv_sec+= c->exit_idle_time;
 164         c->quit_event = c->mainloop->time_new(c->mainloop, &tv, quit_callback, c);
 165     } else if (c->quit_event && pa_idxset_size(c->clients) > 0) {
 166         c->mainloop->time_free(c->quit_event);
 167         c->quit_event = NULL;
 168     }
 169 }
 170