1/***
2  This file is part of PulseAudio.
3
4  Copyright 2004-2006 Lennart Poettering
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
8  published by the Free Software Foundation; either version 2.1 of the
9  License, 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  Lesser General Public License for more details.
15
16  You should have received a copy of the GNU Lesser General Public
17  License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
18***/
19
20#ifdef HAVE_CONFIG_H
21#include <config.h>
22#endif
23
24#include <stdlib.h>
25
26#include <pulse/xmalloc.h>
27
28#include <pulsecore/i18n.h>
29#include <pulsecore/macro.h>
30
31#include "mainloop-api.h"
32
33struct once_info {
34    void (*callback)(pa_mainloop_api*m, void *userdata);
35    void *userdata;
36};
37
38static void once_callback(pa_mainloop_api *m, pa_defer_event *e, void *userdata) {
39    struct once_info *i = userdata;
40
41    pa_assert(m);
42    pa_assert(i);
43
44    pa_assert(i->callback);
45    i->callback(m, i->userdata);
46
47    pa_assert(m->defer_free);
48    m->defer_free(e);
49}
50
51static void free_callback(pa_mainloop_api *m, pa_defer_event *e, void *userdata) {
52    struct once_info *i = userdata;
53
54    pa_assert(m);
55    pa_assert(i);
56    pa_xfree(i);
57}
58
59void pa_mainloop_api_once(pa_mainloop_api* m, void (*callback)(pa_mainloop_api *m, void *userdata), void *userdata) {
60    struct once_info *i;
61    pa_defer_event *e;
62
63    pa_assert(m);
64    pa_assert(callback);
65
66    pa_init_i18n();
67
68    i = pa_xnew(struct once_info, 1);
69    i->callback = callback;
70    i->userdata = userdata;
71
72    pa_assert(m->defer_new);
73    pa_assert_se(e = m->defer_new(m, once_callback, i));
74    m->defer_set_destroy(e, free_callback);
75}
76