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
|
#include "mpris-interface.h"
#include <popt.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
GMainLoop *loop;
void on_properties_changed(__attribute__((unused)) GDBusProxy *proxy, GVariant *changed_properties,
const gchar *const *invalidated_properties,
__attribute__((unused)) gpointer user_data) {
/* Note that we are guaranteed that changed_properties and
* invalidated_properties are never NULL
*/
if (g_variant_n_children(changed_properties) > 0) {
GVariantIter *iter;
const gchar *key;
GVariant *value;
g_print(" *** Properties Changed:\n");
g_variant_get(changed_properties, "a{sv}", &iter);
while (g_variant_iter_loop(iter, "{&sv}", &key, &value)) {
gchar *value_str;
value_str = g_variant_print(value, TRUE);
g_print(" %s -> %s\n", key, value_str);
g_free(value_str);
}
g_variant_iter_free(iter);
}
if (g_strv_length((GStrv)invalidated_properties) > 0) {
guint n;
g_print(" *** Properties Invalidated:\n");
for (n = 0; invalidated_properties[n] != NULL; n++) {
const gchar *key = invalidated_properties[n];
g_print(" %s\n", key);
}
}
}
pthread_t dbus_thread;
void *dbus_thread_func(__attribute__((unused)) void *arg) {
loop = g_main_loop_new(NULL, FALSE);
g_main_loop_run(loop);
return NULL; // this is just to quieten a compiler warning.
}
int main(int argc, char *argv[]) {
GBusType gbus_type_selected = G_BUS_TYPE_SYSTEM; // set default
// get the options --system or --session for system bus or session bus
signed char c; /* used for argument parsing */
poptContext optCon; /* context for parsing command-line options */
struct poptOption optionsTable[] = {
{"system", '\0', POPT_ARG_VAL, &gbus_type_selected, G_BUS_TYPE_SYSTEM,
"Listen on the D-Bus system bus -- pick this option or the \'--session\' option, but not "
"both. This is the default if no option is chosen.",
NULL},
{"session", '\0', POPT_ARG_VAL, &gbus_type_selected, G_BUS_TYPE_SESSION,
"Listen on the D-Bus session bus -- pick this option or the \'--system\' option, but not "
"both.",
NULL},
POPT_AUTOHELP{NULL, 0, 0, NULL, 0, NULL, NULL}};
optCon = poptGetContext(NULL, argc, (const char **)argv, optionsTable, 0);
poptSetOtherOptionHelp(optCon, "[--system | --session]");
if (argc > 2) {
poptPrintHelp(optCon, stderr, 0);
exit(EXIT_FAILURE);
}
/* Now do options processing */
while ((c = poptGetNextOpt(optCon)) >= 0) {
}
if (c < -1) {
/* an error occurred during option processing */
fprintf(stderr, "%s: %s\n", poptBadOption(optCon, POPT_BADOPTION_NOALIAS), poptStrerror(c));
return 1;
}
poptFreeContext(optCon);
printf("Listening on the D-Bus %s bus...\n",
(gbus_type_selected == G_BUS_TYPE_SYSTEM) ? "system" : "session");
pthread_create(&dbus_thread, NULL, &dbus_thread_func, NULL);
GError *error1 = NULL;
MediaPlayer2 *proxy1 = media_player2_proxy_new_for_bus_sync(
gbus_type_selected, G_DBUS_PROXY_FLAGS_NONE, "org.mpris.MediaPlayer2.ShairportSync",
"/org/mpris/MediaPlayer2", NULL, &error1);
if (error1)
printf("Error proxying MediaPlayer2");
g_signal_connect(proxy1, "g-properties-changed", G_CALLBACK(on_properties_changed), NULL);
GError *error2 = NULL;
MediaPlayer2Player *proxy2 = media_player2_player_proxy_new_for_bus_sync(
gbus_type_selected, G_DBUS_PROXY_FLAGS_NONE, "org.mpris.MediaPlayer2.ShairportSync",
"/org/mpris/MediaPlayer2", NULL, &error2);
if (error2)
printf("Error proxying MediaPlayer2Player");
g_signal_connect(proxy2, "g-properties-changed", G_CALLBACK(on_properties_changed), NULL);
// g_main_loop_quit(loop);
pthread_join(dbus_thread, NULL);
printf("exiting program.\n");
g_object_unref(proxy1);
g_object_unref(proxy2);
return 0;
}
|
