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[pulseaudio] / 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 #include <pulsecore/macro.h>
49
50 #include "core.h"
51
52 static PA_DEFINE_CHECK_TYPE(pa_core, pa_msgobject);
53
54 static int core_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
55 pa_core *c = PA_CORE(o);
56
57 pa_core_assert_ref(c);
58
59 switch (code) {
60
61 case PA_CORE_MESSAGE_UNLOAD_MODULE:
62 pa_module_unload(c, userdata);
63 return 0;
64
65 default:
66 return -1;
67 }
68 }
69
70 static void core_free(pa_object *o);
71
72 pa_core* pa_core_new(pa_mainloop_api *m, int shared) {
73 pa_core* c;
74 pa_mempool *pool;
75
76 pa_assert(m);
77
78 if (shared) {
79 if (!(pool = pa_mempool_new(shared))) {
80 pa_log_warn("failed to allocate shared memory pool. Falling back to a normal memory pool.");
81 shared = 0;
82 }
83 }
84
85 if (!shared) {
86 if (!(pool = pa_mempool_new(shared))) {
87 pa_log("pa_mempool_new() failed.");
88 return NULL;
89 }
90 }
91
92 c = pa_msgobject_new(pa_core);
93 c->parent.parent.free = core_free;
94 c->parent.process_msg = core_process_msg;
95
96 c->mainloop = m;
97 c->clients = pa_idxset_new(NULL, NULL);
98 c->sinks = pa_idxset_new(NULL, NULL);
99 c->sources = pa_idxset_new(NULL, NULL);
100 c->source_outputs = pa_idxset_new(NULL, NULL);
101 c->sink_inputs = pa_idxset_new(NULL, NULL);
102
103 c->default_source_name = c->default_sink_name = NULL;
104
105 c->modules = NULL;
106 c->namereg = NULL;
107 c->scache = NULL;
108 c->autoload_idxset = NULL;
109 c->autoload_hashmap = NULL;
110 c->running_as_daemon = 0;
111
112 c->default_sample_spec.format = PA_SAMPLE_S16NE;
113 c->default_sample_spec.rate = 44100;
114 c->default_sample_spec.channels = 2;
115 c->default_n_fragments = 4;
116 c->default_fragment_size_msec = 25;
117
118 c->module_auto_unload_event = NULL;
119 c->module_defer_unload_event = NULL;
120 c->scache_auto_unload_event = NULL;
121
122 c->subscription_defer_event = NULL;
123 PA_LLIST_HEAD_INIT(pa_subscription, c->subscriptions);
124 PA_LLIST_HEAD_INIT(pa_subscription_event, c->subscription_event_queue);
125 c->subscription_event_last = NULL;
126
127 c->mempool = pool;
128
129 c->disallow_module_loading = 0;
130
131 c->quit_event = NULL;
132
133 c->exit_idle_time = -1;
134 c->module_idle_time = 20;
135 c->scache_idle_time = 20;
136
137 c->resample_method = PA_RESAMPLER_SRC_SINC_FASTEST;
138
139 c->is_system_instance = 0;
140
141 pa_hook_init(&c->hook_sink_new, c);
142 pa_hook_init(&c->hook_sink_new_post, c);
143 pa_hook_init(&c->hook_sink_disconnect, c);
144 pa_hook_init(&c->hook_sink_disconnect_post, c);
145 pa_hook_init(&c->hook_source_new, c);
146 pa_hook_init(&c->hook_source_new_post, c);
147 pa_hook_init(&c->hook_source_disconnect, c);
148 pa_hook_init(&c->hook_source_disconnect_post, c);
149 pa_hook_init(&c->hook_sink_input_new, c);
150 pa_hook_init(&c->hook_sink_input_new_post, c);
151 pa_hook_init(&c->hook_sink_input_disconnect, c);
152 pa_hook_init(&c->hook_sink_input_disconnect_post, c);
153 pa_hook_init(&c->hook_source_output_new, c);
154 pa_hook_init(&c->hook_source_output_new_post, c);
155 pa_hook_init(&c->hook_source_output_disconnect, c);
156 pa_hook_init(&c->hook_source_output_disconnect_post, c);
157
158 pa_property_init(c);
159
160 pa_random(&c->cookie, sizeof(c->cookie));
161
162 #ifdef SIGPIPE
163 pa_check_signal_is_blocked(SIGPIPE);
164 #endif
165
166 return c;
167 }
168
169 static void core_free(pa_object *o) {
170 pa_core *c = PA_CORE(o);
171 pa_assert(c);
172
173 pa_module_unload_all(c);
174 assert(!c->modules);
175
176 assert(pa_idxset_isempty(c->clients));
177 pa_idxset_free(c->clients, NULL, NULL);
178
179 assert(pa_idxset_isempty(c->sinks));
180 pa_idxset_free(c->sinks, NULL, NULL);
181
182 assert(pa_idxset_isempty(c->sources));
183 pa_idxset_free(c->sources, NULL, NULL);
184
185 assert(pa_idxset_isempty(c->source_outputs));
186 pa_idxset_free(c->source_outputs, NULL, NULL);
187
188 assert(pa_idxset_isempty(c->sink_inputs));
189 pa_idxset_free(c->sink_inputs, NULL, NULL);
190
191 pa_scache_free(c);
192 pa_namereg_free(c);
193 pa_autoload_free(c);
194 pa_subscription_free_all(c);
195
196 if (c->quit_event)
197 c->mainloop->time_free(c->quit_event);
198
199 pa_xfree(c->default_source_name);
200 pa_xfree(c->default_sink_name);
201
202 pa_mempool_free(c->mempool);
203
204 pa_property_cleanup(c);
205
206 pa_hook_free(&c->hook_sink_new);
207 pa_hook_free(&c->hook_sink_new_post);
208 pa_hook_free(&c->hook_sink_disconnect);
209 pa_hook_free(&c->hook_sink_disconnect_post);
210 pa_hook_free(&c->hook_source_new);
211 pa_hook_free(&c->hook_source_new_post);
212 pa_hook_free(&c->hook_source_disconnect);
213 pa_hook_free(&c->hook_source_disconnect_post);
214 pa_hook_free(&c->hook_sink_input_new);
215 pa_hook_free(&c->hook_sink_input_new_post);
216 pa_hook_free(&c->hook_sink_input_disconnect);
217 pa_hook_free(&c->hook_sink_input_disconnect_post);
218 pa_hook_free(&c->hook_source_output_new);
219 pa_hook_free(&c->hook_source_output_new_post);
220 pa_hook_free(&c->hook_source_output_disconnect);
221 pa_hook_free(&c->hook_source_output_disconnect_post);
222
223 pa_xfree(c);
224 }
225
226 static void quit_callback(pa_mainloop_api*m, pa_time_event *e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
227 pa_core *c = userdata;
228 pa_assert(c->quit_event = e);
229
230 m->quit(m, 0);
231 }
232
233 void pa_core_check_quit(pa_core *c) {
234 pa_assert(c);
235
236 if (!c->quit_event && c->exit_idle_time >= 0 && pa_idxset_size(c->clients) == 0) {
237 struct timeval tv;
238 pa_gettimeofday(&tv);
239 tv.tv_sec+= c->exit_idle_time;
240 c->quit_event = c->mainloop->time_new(c->mainloop, &tv, quit_callback, c);
241 } else if (c->quit_event && pa_idxset_size(c->clients) > 0) {
242 c->mainloop->time_free(c->quit_event);
243 c->quit_event = NULL;
244 }
245 }
246