1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/***
This file is part of PulseAudio.
Copyright 2006 Lennart Poettering
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 2.1 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, see <http://www.gnu.org/licenses/>.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <pulse/timeval.h>
#include <pulse/xmalloc.h>
#include <pulsecore/macro.h>
#include "avahi-wrap.h"
typedef struct {
AvahiPoll api;
pa_mainloop_api *mainloop;
} pa_avahi_poll;
struct AvahiWatch {
pa_io_event *io_event;
pa_avahi_poll *avahi_poll;
AvahiWatchEvent current_event;
AvahiWatchCallback callback;
void *userdata;
};
static AvahiWatchEvent translate_io_flags_back(pa_io_event_flags_t e) {
return
(e & PA_IO_EVENT_INPUT ? AVAHI_WATCH_IN : 0) |
(e & PA_IO_EVENT_OUTPUT ? AVAHI_WATCH_OUT : 0) |
(e & PA_IO_EVENT_ERROR ? AVAHI_WATCH_ERR : 0) |
(e & PA_IO_EVENT_HANGUP ? AVAHI_WATCH_HUP : 0);
}
static pa_io_event_flags_t translate_io_flags(AvahiWatchEvent e) {
return
(e & AVAHI_WATCH_IN ? PA_IO_EVENT_INPUT : 0) |
(e & AVAHI_WATCH_OUT ? PA_IO_EVENT_OUTPUT : 0) |
(e & AVAHI_WATCH_ERR ? PA_IO_EVENT_ERROR : 0) |
(e & AVAHI_WATCH_HUP ? PA_IO_EVENT_HANGUP : 0);
}
static void watch_callback(pa_mainloop_api*a, pa_io_event* e, int fd, pa_io_event_flags_t events, void *userdata) {
AvahiWatch *w = userdata;
pa_assert(a);
pa_assert(e);
pa_assert(w);
w->current_event = translate_io_flags_back(events);
w->callback(w, fd, w->current_event, w->userdata);
w->current_event = 0;
}
static AvahiWatch* watch_new(const AvahiPoll *api, int fd, AvahiWatchEvent event, AvahiWatchCallback callback, void *userdata) {
pa_avahi_poll *p;
AvahiWatch *w;
pa_assert(api);
pa_assert(fd >= 0);
pa_assert(callback);
pa_assert_se(p = api->userdata);
w = pa_xnew(AvahiWatch, 1);
w->avahi_poll = p;
w->current_event = 0;
w->callback = callback;
w->userdata = userdata;
w->io_event = p->mainloop->io_new(p->mainloop, fd, translate_io_flags(event), watch_callback, w);
return w;
}
static void watch_update(AvahiWatch *w, AvahiWatchEvent event) {
pa_assert(w);
w->avahi_poll->mainloop->io_enable(w->io_event, translate_io_flags(event));
}
static AvahiWatchEvent watch_get_events(AvahiWatch *w) {
pa_assert(w);
return w->current_event;
}
static void watch_free(AvahiWatch *w) {
pa_assert(w);
w->avahi_poll->mainloop->io_free(w->io_event);
pa_xfree(w);
}
struct AvahiTimeout {
pa_time_event *time_event;
pa_avahi_poll *avahi_poll;
AvahiTimeoutCallback callback;
void *userdata;
};
static void timeout_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *t, void *userdata) {
AvahiTimeout *to = userdata;
pa_assert(a);
pa_assert(e);
to->callback(to, to->userdata);
}
static AvahiTimeout* timeout_new(const AvahiPoll *api, const struct timeval *tv, AvahiTimeoutCallback callback, void *userdata) {
pa_avahi_poll *p;
AvahiTimeout *t;
pa_assert(api);
pa_assert(callback);
pa_assert_se(p = api->userdata);
t = pa_xnew(AvahiTimeout, 1);
t->avahi_poll = p;
t->callback = callback;
t->userdata = userdata;
t->time_event = tv ? p->mainloop->time_new(p->mainloop, tv, timeout_callback, t) : NULL;
return t;
}
static void timeout_update(AvahiTimeout *t, const struct timeval *tv) {
pa_assert(t);
if (t->time_event && tv)
t->avahi_poll->mainloop->time_restart(t->time_event, tv);
else if (!t->time_event && tv)
t->time_event = t->avahi_poll->mainloop->time_new(t->avahi_poll->mainloop, tv, timeout_callback, t);
else if (t->time_event && !tv) {
t->avahi_poll->mainloop->time_free(t->time_event);
t->time_event = NULL;
}
}
static void timeout_free(AvahiTimeout *t) {
pa_assert(t);
if (t->time_event)
t->avahi_poll->mainloop->time_free(t->time_event);
pa_xfree(t);
}
AvahiPoll* pa_avahi_poll_new(pa_mainloop_api *m) {
pa_avahi_poll *p;
pa_assert(m);
p = pa_xnew(pa_avahi_poll, 1);
p->api.userdata = p;
p->api.watch_new = watch_new;
p->api.watch_update = watch_update;
p->api.watch_get_events = watch_get_events;
p->api.watch_free = watch_free;
p->api.timeout_new = timeout_new;
p->api.timeout_update = timeout_update;
p->api.timeout_free = timeout_free;
p->mainloop = m;
return &p->api;
}
void pa_avahi_poll_free(AvahiPoll *api) {
pa_avahi_poll *p;
pa_assert(api);
pa_assert_se(p = api->userdata);
pa_xfree(p);
}
|
