code.delx.au - pulseaudio/blob - src/pulsecore/core.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 <stdlib.h>
  30 #include <assert.h>
  31 #include <stdio.h>
  32 #include <signal.h>
  33
  34 #include <pulse/timeval.h>
  35 #include <pulse/xmalloc.h>
  36
  37 #include <pulsecore/module.h>
  38 #include <pulsecore/sink.h>
  39 #include <pulsecore/source.h>
  40 #include <pulsecore/namereg.h>
  41 #include <pulsecore/core-util.h>
  42 #include <pulsecore/core-scache.h>
  43 #include <pulsecore/autoload.h>
  44 #include <pulsecore/core-subscribe.h>
  45 #include <pulsecore/props.h>
  46 #include <pulsecore/random.h>
  47 #include <pulsecore/log.h>
  48
  49 #include "core.h"
  50
  51 pa_core* pa_core_new(pa_mainloop_api *m, int shared) {
  52     pa_core* c;
  53     pa_mempool *pool;
  54
  55     if (shared) {
  56         if (!(pool = pa_mempool_new(shared))) {
  57             pa_log_warn("failed to allocate shared memory pool. Falling back to a normal memory pool.");
  58             shared = 0;
  59         }
  60     }
  61
  62     if (!shared) {
  63         if (!(pool = pa_mempool_new(shared))) {
  64             pa_log("pa_mempool_new() failed.");
  65             return NULL;
  66         }
  67     }
  68
  69     c = pa_xnew(pa_core, 1);
  70
  71     c->mainloop = m;
  72     c->clients = pa_idxset_new(NULL, NULL);
  73     c->sinks = pa_idxset_new(NULL, NULL);
  74     c->sources = pa_idxset_new(NULL, NULL);
  75     c->source_outputs = pa_idxset_new(NULL, NULL);
  76     c->sink_inputs = pa_idxset_new(NULL, NULL);
  77
  78     c->default_source_name = c->default_sink_name = NULL;
  79
  80     c->modules = NULL;
  81     c->namereg = NULL;
  82     c->scache = NULL;
  83     c->autoload_idxset = NULL;
  84     c->autoload_hashmap = NULL;
  85     c->running_as_daemon = 0;
  86
  87     c->default_sample_spec.format = PA_SAMPLE_S16NE;
  88     c->default_sample_spec.rate = 44100;
  89     c->default_sample_spec.channels = 2;
  90
  91     c->module_auto_unload_event = NULL;
  92     c->module_defer_unload_event = NULL;
  93     c->scache_auto_unload_event = NULL;
  94
  95     c->subscription_defer_event = NULL;
  96     PA_LLIST_HEAD_INIT(pa_subscription, c->subscriptions);
  97     PA_LLIST_HEAD_INIT(pa_subscription_event, c->subscription_event_queue);
  98     c->subscription_event_last = NULL;
  99
 100     c->mempool = pool;
 101
 102     c->disallow_module_loading = 0;
 103
 104     c->quit_event = NULL;
 105
 106     c->exit_idle_time = -1;
 107     c->module_idle_time = 20;
 108     c->scache_idle_time = 20;
 109
 110     c->resample_method = PA_RESAMPLER_SRC_SINC_FASTEST;
 111
 112     c->is_system_instance = 0;
 113
 114     pa_hook_init(&c->hook_sink_input_new, c);
 115     pa_hook_init(&c->hook_sink_disconnect, c);
 116     pa_hook_init(&c->hook_source_output_new, c);
 117     pa_hook_init(&c->hook_source_disconnect, c);
 118
 119     pa_property_init(c);
 120
 121     pa_random(&c->cookie, sizeof(c->cookie));
 122
 123 #ifdef SIGPIPE
 124     pa_check_signal_is_blocked(SIGPIPE);
 125 #endif
 126     return c;
 127 }
 128
 129 void pa_core_free(pa_core *c) {
 130     assert(c);
 131
 132     pa_module_unload_all(c);
 133     assert(!c->modules);
 134
 135     assert(pa_idxset_isempty(c->clients));
 136     pa_idxset_free(c->clients, NULL, NULL);
 137
 138     assert(pa_idxset_isempty(c->sinks));
 139     pa_idxset_free(c->sinks, NULL, NULL);
 140
 141     assert(pa_idxset_isempty(c->sources));
 142     pa_idxset_free(c->sources, NULL, NULL);
 143
 144     assert(pa_idxset_isempty(c->source_outputs));
 145     pa_idxset_free(c->source_outputs, NULL, NULL);
 146
 147     assert(pa_idxset_isempty(c->sink_inputs));
 148     pa_idxset_free(c->sink_inputs, NULL, NULL);
 149
 150     pa_scache_free(c);
 151     pa_namereg_free(c);
 152     pa_autoload_free(c);
 153     pa_subscription_free_all(c);
 154
 155     if (c->quit_event)
 156         c->mainloop->time_free(c->quit_event);
 157
 158     pa_xfree(c->default_source_name);
 159     pa_xfree(c->default_sink_name);
 160
 161     pa_mempool_free(c->mempool);
 162
 163     pa_property_cleanup(c);
 164
 165     pa_hook_free(&c->hook_sink_input_new);
 166     pa_hook_free(&c->hook_sink_disconnect);
 167     pa_hook_free(&c->hook_source_output_new);
 168     pa_hook_free(&c->hook_source_disconnect);
 169
 170     pa_xfree(c);
 171 }
 172
 173 static void quit_callback(pa_mainloop_api*m, pa_time_event *e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
 174     pa_core *c = userdata;
 175     assert(c->quit_event = e);
 176
 177     m->quit(m, 0);
 178 }
 179
 180 void pa_core_check_quit(pa_core *c) {
 181     assert(c);
 182
 183     if (!c->quit_event && c->exit_idle_time >= 0 && pa_idxset_size(c->clients) == 0) {
 184         struct timeval tv;
 185         pa_gettimeofday(&tv);
 186         tv.tv_sec+= c->exit_idle_time;
 187         c->quit_event = c->mainloop->time_new(c->mainloop, &tv, quit_callback, c);
 188     } else if (c->quit_event && pa_idxset_size(c->clients) > 0) {
 189         c->mainloop->time_free(c->quit_event);
 190         c->quit_event = NULL;
 191     }
 192 }
 193