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/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include <pulse/timeval.h>
#include <pulse/xmalloc.h>
#include <pulsecore/module.h>
#include <pulsecore/sink.h>
#include <pulsecore/source.h>
#include <pulsecore/namereg.h>
#include <pulsecore/core-util.h>
#include <pulsecore/core-scache.h>
#include <pulsecore/autoload.h>
#include <pulsecore/core-subscribe.h>
#include <pulsecore/shared.h>
#include <pulsecore/random.h>
#include <pulsecore/log.h>
#include <pulsecore/macro.h>
#include "core.h"
static PA_DEFINE_CHECK_TYPE(pa_core, pa_msgobject);
static int core_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
pa_core *c = PA_CORE(o);
pa_core_assert_ref(c);
switch (code) {
case PA_CORE_MESSAGE_UNLOAD_MODULE:
pa_module_unload(c, userdata, TRUE);
return 0;
default:
return -1;
}
}
static void core_free(pa_object *o);
pa_core* pa_core_new(pa_mainloop_api *m, int shared) {
pa_core* c;
pa_mempool *pool;
int j;
pa_assert(m);
if (shared) {
if (!(pool = pa_mempool_new(shared))) {
pa_log_warn("failed to allocate shared memory pool. Falling back to a normal memory pool.");
shared = 0;
}
}
if (!shared) {
if (!(pool = pa_mempool_new(shared))) {
pa_log("pa_mempool_new() failed.");
return NULL;
}
}
c = pa_msgobject_new(pa_core);
c->parent.parent.free = core_free;
c->parent.process_msg = core_process_msg;
c->mainloop = m;
c->clients = pa_idxset_new(NULL, NULL);
c->sinks = pa_idxset_new(NULL, NULL);
c->sources = pa_idxset_new(NULL, NULL);
c->source_outputs = pa_idxset_new(NULL, NULL);
c->sink_inputs = pa_idxset_new(NULL, NULL);
c->default_source_name = c->default_sink_name = NULL;
c->modules = NULL;
c->namereg = NULL;
c->scache = NULL;
c->autoload_idxset = NULL;
c->autoload_hashmap = NULL;
c->running_as_daemon = FALSE;
c->default_sample_spec.format = PA_SAMPLE_S16NE;
c->default_sample_spec.rate = 44100;
c->default_sample_spec.channels = 2;
c->default_n_fragments = 4;
c->default_fragment_size_msec = 25;
c->module_auto_unload_event = NULL;
c->module_defer_unload_event = NULL;
c->scache_auto_unload_event = NULL;
c->subscription_defer_event = NULL;
PA_LLIST_HEAD_INIT(pa_subscription, c->subscriptions);
PA_LLIST_HEAD_INIT(pa_subscription_event, c->subscription_event_queue);
c->subscription_event_last = NULL;
c->mempool = pool;
pa_silence_cache_init(&c->silence_cache);
c->exit_event = NULL;
c->exit_idle_time = -1;
c->module_idle_time = 20;
c->scache_idle_time = 20;
c->resample_method = PA_RESAMPLER_SPEEX_FLOAT_BASE + 3;
c->disallow_module_loading = FALSE;
c->disallow_exit = FALSE;
c->realtime_scheduling = FALSE;
c->realtime_priority = 5;
c->disable_remixing = FALSE;
for (j = 0; j < PA_CORE_HOOK_MAX; j++)
pa_hook_init(&c->hooks[j], c);
pa_shared_init(c);
pa_random(&c->cookie, sizeof(c->cookie));
#ifdef SIGPIPE
pa_check_signal_is_blocked(SIGPIPE);
#endif
pa_core_check_idle(c);
return c;
}
static void core_free(pa_object *o) {
pa_core *c = PA_CORE(o);
int j;
pa_assert(c);
pa_module_unload_all(c);
pa_assert(!c->modules);
pa_assert(pa_idxset_isempty(c->clients));
pa_idxset_free(c->clients, NULL, NULL);
pa_assert(pa_idxset_isempty(c->sinks));
pa_idxset_free(c->sinks, NULL, NULL);
pa_assert(pa_idxset_isempty(c->sources));
pa_idxset_free(c->sources, NULL, NULL);
pa_assert(pa_idxset_isempty(c->source_outputs));
pa_idxset_free(c->source_outputs, NULL, NULL);
pa_assert(pa_idxset_isempty(c->sink_inputs));
pa_idxset_free(c->sink_inputs, NULL, NULL);
pa_scache_free(c);
pa_namereg_free(c);
pa_autoload_free(c);
pa_subscription_free_all(c);
if (c->exit_event)
c->mainloop->time_free(c->exit_event);
pa_xfree(c->default_source_name);
pa_xfree(c->default_sink_name);
pa_silence_cache_done(&c->silence_cache);
pa_mempool_free(c->mempool);
pa_shared_cleanup(c);
for (j = 0; j < PA_CORE_HOOK_MAX; j++)
pa_hook_done(&c->hooks[j]);
pa_xfree(c);
}
static void exit_callback(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
pa_core *c = userdata;
pa_assert(c->exit_event == e);
pa_core_exit(c, TRUE, 0);
}
void pa_core_check_idle(pa_core *c) {
pa_assert(c);
if (!c->exit_event &&
c->exit_idle_time >= 0 &&
pa_idxset_size(c->clients) == 0) {
struct timeval tv;
pa_gettimeofday(&tv);
tv.tv_sec+= c->exit_idle_time;
c->exit_event = c->mainloop->time_new(c->mainloop, &tv, exit_callback, c);
} else if (c->exit_event && pa_idxset_size(c->clients) > 0) {
c->mainloop->time_free(c->exit_event);
c->exit_event = NULL;
}
}
int pa_core_exit(pa_core *c, pa_bool_t force, int retval) {
pa_assert(c);
if (c->disallow_exit && !force)
return -1;
c->mainloop->quit(c->mainloop, retval);
return 0;
}
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