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
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/*
*
* oFono - Open Source Telephony
*
* Copyright (C) 2013 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <gdbus.h>
#include <ofono/handsfree-audio.h>
#include "ofono.h"
#define HFP_AUDIO_MANAGER_INTERFACE OFONO_SERVICE ".HandsfreeAudioManager"
#define HFP_AUDIO_AGENT_INTERFACE OFONO_SERVICE ".HandsfreeAudioAgent"
/* Supported agent codecs */
enum hfp_codec {
HFP_CODEC_CVSD = 0x01,
HFP_CODEC_MSBC = 0x02,
};
struct agent {
char *owner;
char *path;
unsigned char *codecs;
int codecs_len;
guint watch;
};
static struct agent *agent = NULL;
static int ref_count = 0;
static void agent_free(struct agent *agent)
{
if (agent->watch > 0)
g_dbus_remove_watch(ofono_dbus_get_connection(), agent->watch);
g_free(agent->owner);
g_free(agent->path);
g_free(agent->codecs);
g_free(agent);
}
static void agent_release(struct agent *agent)
{
DBusMessage *msg;
msg = dbus_message_new_method_call(agent->owner, agent->path,
HFP_AUDIO_AGENT_INTERFACE, "Release");
g_dbus_send_message(ofono_dbus_get_connection(), msg);
}
static void agent_disconnect(DBusConnection *conn, void *user_data)
{
DBG("Agent %s disconnected", agent->owner);
agent_free(agent);
agent = NULL;
}
static DBusMessage *am_get_cards(DBusConnection *conn,
DBusMessage *msg, void *user_data)
{
return __ofono_error_not_implemented(msg);
}
static DBusMessage *am_agent_register(DBusConnection *conn,
DBusMessage *msg, void *user_data)
{
const char *sender, *path;
unsigned char *codecs;
DBusMessageIter iter, array;
int length, i;
if (agent)
return __ofono_error_in_use(msg);
sender = dbus_message_get_sender(msg);
if (dbus_message_iter_init(msg, &iter) == FALSE)
return __ofono_error_invalid_args(msg);
dbus_message_iter_get_basic(&iter, &path);
dbus_message_iter_next(&iter);
dbus_message_iter_recurse(&iter, &array);
dbus_message_iter_get_fixed_array(&array, &codecs, &length);
if (length == 0)
return __ofono_error_invalid_args(msg);
for (i = 0; i < length; i++) {
if (codecs[i] != HFP_CODEC_CVSD &&
codecs[i] != HFP_CODEC_MSBC)
return __ofono_error_invalid_args(msg);
}
agent = g_new0(struct agent, 1);
agent->owner = g_strdup(sender);
agent->path = g_strdup(path);
agent->codecs = g_memdup(codecs, length);
agent->codecs_len = length;
agent->watch = g_dbus_add_disconnect_watch(conn, sender,
agent_disconnect, NULL, NULL);
return dbus_message_new_method_return(msg);
}
static DBusMessage *am_agent_unregister(DBusConnection *conn,
DBusMessage *msg, void *user_data)
{
const char *sender, *path;
DBusMessageIter iter;
if (agent == NULL)
return __ofono_error_not_found(msg);
sender = dbus_message_get_sender(msg);
if (dbus_message_iter_init(msg, &iter) == FALSE)
return __ofono_error_invalid_args(msg);
dbus_message_iter_get_basic(&iter, &path);
if (strcmp(sender, agent->owner) != 0)
return __ofono_error_not_allowed(msg);
if (strcmp(path, agent->path) != 0)
return __ofono_error_not_found(msg);
agent_free(agent);
agent = NULL;
return dbus_message_new_method_return(msg);
}
static const GDBusMethodTable am_methods[] = {
{ GDBUS_METHOD("GetCards",
NULL, GDBUS_ARGS({"cards", "a{oa{sv}}"}),
am_get_cards) } ,
{ GDBUS_METHOD("Register",
GDBUS_ARGS({"path", "o"}, {"codecs", "ay"}), NULL,
am_agent_register) },
{ GDBUS_METHOD("Unregister",
GDBUS_ARGS({"path", "o"}), NULL,
am_agent_unregister) },
{ }
};
void ofono_handsfree_audio_ref(void)
{
ref_count += 1;
if (ref_count != 1)
return;
if (!g_dbus_register_interface(ofono_dbus_get_connection(),
"/", HFP_AUDIO_MANAGER_INTERFACE,
am_methods, NULL, NULL, NULL, NULL))
ofono_error("Unable to register Handsfree Audio Manager");
}
void ofono_handsfree_audio_unref(void)
{
if (ref_count == 0) {
ofono_error("Error in handsfree audio manager ref counting");
return;
}
ref_count -= 1;
if (ref_count > 0)
return;
g_dbus_unregister_interface(ofono_dbus_get_connection(), "/",
HFP_AUDIO_MANAGER_INTERFACE);
if (agent) {
agent_release(agent);
agent_free(agent);
}
}
int __ofono_handsfree_audio_manager_init(void)
{
return 0;
}
void __ofono_handsfree_audio_manager_cleanup(void)
{
if (ref_count == 0)
return;
ofono_error("Handsfree Audio manager not cleaned up properly,"
"fixing...");
ref_count = 1;
ofono_handsfree_audio_unref();
}
|
