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 #include <pulsecore/log.h>
  45
  46 #include "core.h"
  47
  48 pa_core* pa_core_new(pa_mainloop_api *m, int shared) {
  49     pa_core* c;
  50     pa_mempool *pool;
  51
  52     if (shared) {
  53         if (!(pool = pa_mempool_new(shared))) {
  54             pa_log_warn("failed to allocate shared memory pool. Falling back to a normal memory pool.");
  55             shared = 0;
  56         }
  57     }
  58
  59     if (!shared) {
  60         if (!(pool = pa_mempool_new(shared))) {
  61             pa_log("pa_mempool_new() failed.");
  62             return NULL;
  63         }
  64     }
  65
  66     c = pa_xnew(pa_core, 1);
  67
  68     c->mainloop = m;
  69     c->clients = pa_idxset_new(NULL, NULL);
  70     c->sinks = pa_idxset_new(NULL, NULL);
  71     c->sources = pa_idxset_new(NULL, NULL);
  72     c->source_outputs = pa_idxset_new(NULL, NULL);
  73     c->sink_inputs = pa_idxset_new(NULL, NULL);
  74
  75     c->default_source_name = c->default_sink_name = NULL;
  76
  77     c->modules = NULL;
  78     c->namereg = NULL;
  79     c->scache = NULL;
  80     c->autoload_idxset = NULL;
  81     c->autoload_hashmap = NULL;
  82     c->running_as_daemon = 0;
  83
  84     c->default_sample_spec.format = PA_SAMPLE_S16NE;
  85     c->default_sample_spec.rate = 44100;
  86     c->default_sample_spec.channels = 2;
  87
  88     c->module_auto_unload_event = NULL;
  89     c->module_defer_unload_event = NULL;
  90     c->scache_auto_unload_event = NULL;
  91
  92     c->subscription_defer_event = NULL;
  93     PA_LLIST_HEAD_INIT(pa_subscription, c->subscriptions);
  94     PA_LLIST_HEAD_INIT(pa_subscription_event, c->subscription_event_queue);
  95     c->subscription_event_last = NULL;
  96
  97     c->mempool = pool;
  98
  99     c->disallow_module_loading = 0;
 100
 101     c->quit_event = NULL;
 102
 103     c->exit_idle_time = -1;
 104     c->module_idle_time = 20;
 105     c->scache_idle_time = 20;
 106
 107     c->resample_method = PA_RESAMPLER_SRC_SINC_FASTEST;
 108
 109     c->is_system_instance = 0;
 110
 111     pa_hook_init(&c->hook_sink_input_new, c);
 112     pa_hook_init(&c->hook_sink_disconnect, c);
 113     pa_hook_init(&c->hook_source_output_new, c);
 114     pa_hook_init(&c->hook_source_disconnect, c);
 115
 116     pa_property_init(c);
 117
 118     pa_random(&c->cookie, sizeof(c->cookie));
 119
 120 #ifdef SIGPIPE
 121     pa_check_signal_is_blocked(SIGPIPE);
 122 #endif
 123     return c;
 124 }
 125
 126 void pa_core_free(pa_core *c) {
 127     assert(c);
 128
 129     pa_module_unload_all(c);
 130     assert(!c->modules);
 131
 132     assert(pa_idxset_isempty(c->clients));
 133     pa_idxset_free(c->clients, NULL, NULL);
 134
 135     assert(pa_idxset_isempty(c->sinks));
 136     pa_idxset_free(c->sinks, NULL, NULL);
 137
 138     assert(pa_idxset_isempty(c->sources));
 139     pa_idxset_free(c->sources, NULL, NULL);
 140
 141     assert(pa_idxset_isempty(c->source_outputs));
 142     pa_idxset_free(c->source_outputs, NULL, NULL);
 143
 144     assert(pa_idxset_isempty(c->sink_inputs));
 145     pa_idxset_free(c->sink_inputs, NULL, NULL);
 146
 147     pa_scache_free(c);
 148     pa_namereg_free(c);
 149     pa_autoload_free(c);
 150     pa_subscription_free_all(c);
 151
 152     if (c->quit_event)
 153         c->mainloop->time_free(c->quit_event);
 154
 155     pa_xfree(c->default_source_name);
 156     pa_xfree(c->default_sink_name);
 157
 158     pa_mempool_free(c->mempool);
 159
 160     pa_property_cleanup(c);
 161
 162     pa_hook_free(&c->hook_sink_input_new);
 163     pa_hook_free(&c->hook_sink_disconnect);
 164     pa_hook_free(&c->hook_source_output_new);
 165     pa_hook_free(&c->hook_source_disconnect);
 166
 167     pa_xfree(c);
 168 }
 169
 170 static void quit_callback(pa_mainloop_api*m, pa_time_event *e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
 171     pa_core *c = userdata;
 172     assert(c->quit_event = e);
 173
 174     m->quit(m, 0);
 175 }
 176
 177 void pa_core_check_quit(pa_core *c) {
 178     assert(c);
 179
 180     if (!c->quit_event && c->exit_idle_time >= 0 && pa_idxset_size(c->clients) == 0) {
 181         struct timeval tv;
 182         pa_gettimeofday(&tv);
 183         tv.tv_sec+= c->exit_idle_time;
 184         c->quit_event = c->mainloop->time_new(c->mainloop, &tv, quit_callback, c);
 185     } else if (c->quit_event && pa_idxset_size(c->clients) > 0) {
 186         c->mainloop->time_free(c->quit_event);
 187         c->quit_event = NULL;
 188     }
 189 }
 190