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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
polypaudio 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 General Public License
along with polypaudio; 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 <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include <errno.h>
#include "module.h"
struct pa_module* pa_module_load(struct pa_core *c, const char *name, const char *argument) {
struct pa_module *m = NULL;
int r;
assert(c && name);
m = malloc(sizeof(struct pa_module));
assert(m);
m->name = strdup(name);
m->argument = argument ? strdup(argument) : NULL;
if (!(m->dl = lt_dlopenext(name)))
goto fail;
if (!(m->init = lt_dlsym(m->dl, "pa_module_init")))
goto fail;
if (!(m->done = lt_dlsym(m->dl, "pa_module_done")))
goto fail;
m->userdata = NULL;
m->core = c;
assert(m->init);
if (m->init(c, m) < 0)
goto fail;
if (!c->modules)
c->modules = pa_idxset_new(NULL, NULL);
assert(c->modules);
r = pa_idxset_put(c->modules, m, &m->index);
assert(r >= 0 && m->index != PA_IDXSET_INVALID);
fprintf(stderr, "module: loaded %u \"%s\" with argument \"%s\".\n", m->index, m->name, m->argument);
return m;
fail:
if (m) {
free(m->argument);
free(m->name);
if (m->dl)
lt_dlclose(m->dl);
free(m);
}
return NULL;
}
static void pa_module_free(struct pa_module *m) {
assert(m && m->done && m->core);
m->done(m->core, m);
lt_dlclose(m->dl);
fprintf(stderr, "module: unloaded %u \"%s\".\n", m->index, m->name);
free(m->name);
free(m->argument);
free(m);
}
void pa_module_unload(struct pa_core *c, struct pa_module *m) {
assert(c && m);
assert(c->modules);
if (!(m = pa_idxset_remove_by_data(c->modules, m, NULL)))
return;
pa_module_free(m);
}
void pa_module_unload_by_index(struct pa_core *c, uint32_t index) {
struct pa_module *m;
assert(c && index != PA_IDXSET_INVALID);
assert(c->modules);
if (!(m = pa_idxset_remove_by_index(c->modules, index)))
return;
pa_module_free(m);
}
static void free_callback(void *p, void *userdata) {
struct pa_module *m = p;
assert(m);
pa_module_free(m);
}
void pa_module_unload_all(struct pa_core *c) {
assert(c);
if (!c->modules)
return;
pa_idxset_free(c->modules, free_callback, NULL);
c->modules = NULL;
}
struct once_info {
struct pa_core *core;
uint32_t index;
};
static void module_unload_once_callback(void *userdata) {
struct once_info *i = userdata;
assert(i);
pa_module_unload_by_index(i->core, i->index);
free(i);
}
void pa_module_unload_request(struct pa_core *c, struct pa_module *m) {
struct once_info *i;
assert(c && m);
i = malloc(sizeof(struct once_info));
assert(i);
i->core = c;
i->index = m->index;
pa_mainloop_api_once(c->mainloop, module_unload_once_callback, i);
}
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