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
|
#include "log.h"
#include "mpris.h"
#include "player.h"
#include "util.h"
#include <stdbool.h>
static void dbus_handle_getall(DBusMessage *msg);
int dbus_active;
DBusConnection *dbus_conn;
static const char *const dbus_mpris_caps[] = {
"CanPlay",
"CanPause",
"CanGoPrevious",
"CanGoNext",
"CanControl"
};
void
dbus_handle_getall(DBusMessage *msg)
{
DBusMessage *reply;
DBusError err;
DBusMessageIter iter, aiter, eiter, viter;
const char *interface;
dbus_bool_t can;
int i, ok;
dbus_error_init(&err);
ok = dbus_message_get_args(msg, &err, DBUS_TYPE_STRING, &interface);
if (ok && strcmp(interface, "org.mpris.MediaPlayer2.Player")) {
dbus_error_free(&err);
return;
}
reply = dbus_message_new_method_return(msg);
/* TODO: change to more sane api like gio and gdbus (?) */
/* connect argument iter to message */
dbus_message_iter_init_append(reply, &iter);
/* add array of dict entries { string : variant } */
ASSERT(dbus_message_iter_open_container(&iter, 'a', "{sv}", &aiter));
for (i = 0; i < ARRLEN(dbus_mpris_caps); i++) {
/* add dict entry */
ASSERT(dbus_message_iter_open_container(&aiter,
'e', NULL, &eiter));
/* string key */
ASSERT(dbus_message_iter_append_basic(&eiter,
's', &dbus_mpris_caps[i]));
/* variant container */
ASSERT(dbus_message_iter_open_container(&eiter,
'v', "b", &viter));
can = true; /* bool value */
ASSERT(dbus_message_iter_append_basic(&viter, 'b', &can));
dbus_message_iter_close_container(&eiter, &viter);
dbus_message_iter_close_container(&aiter, &eiter);
}
dbus_message_iter_close_container(&iter, &aiter);
dbus_connection_send(dbus_conn, reply, NULL);
dbus_message_unref(reply);
dbus_error_free(&err);
}
void
dbus_init(void)
{
DBusError err;
int ret;
dbus_active = 0;
dbus_error_init(&err);
/* dont fail if dbus not available, not everyone has
* it or needs it to play music */
dbus_conn = dbus_bus_get(DBUS_BUS_SESSION, &err);
if (dbus_error_is_set(&err) || !dbus_conn) {
dbus_error_free(&err);
return;
}
/* register as MPRIS compliant player for events */
ret = dbus_bus_request_name(dbus_conn, "org.mpris.MediaPlayer2.tmus",
DBUS_NAME_FLAG_REPLACE_EXISTING, &err);
if (dbus_error_is_set(&err))
ERRORX(SYSTEM, "mpris register failed");
log_info("DBus active!\n");
dbus_active = 1;
dbus_error_free(&err);
}
void
dbus_deinit(void)
{
if (!dbus_active) return;
dbus_connection_unref(dbus_conn);
}
void
dbus_update(void)
{
DBusMessage *msg;
const char *interface;
const char *method;
if (!dbus_active) return;
dbus_connection_read_write(dbus_conn, 0);
msg = dbus_connection_pop_message(dbus_conn);
if (msg == NULL) return;
method = dbus_message_get_member(msg);
interface = dbus_message_get_interface(msg);
if (!strcmp(interface, "org.freedesktop.DBus.Properties")) {
log_info("DBus: Properties requested\n");
if (!strcmp(method, "GetAll"))
dbus_handle_getall(msg);
} else if (!strcmp(interface, "org.mpris.MediaPlayer2.Player")) {
log_info("MPRIS: Method %s\n", method);
if (!strcmp(method, "PlayPause")) {
player_toggle_pause();
} else if (!strcmp(method, "Pause")) {
player_pause();
} else if (!strcmp(method, "Play")) {
player_play();
} else if (!strcmp(method, "Next")) {
player_next();
} else if (!strcmp(method, "Previous")) {
player_prev();
}
}
dbus_message_unref(msg);
}
|
