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
|
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2009 Marcel Holtmann <marcel@holtmann.org>
*
* This library 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.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "ipc.h"
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
/* This table contains the string representation for messages types */
static const char *strtypes[] = {
"BT_REQUEST",
"BT_RESPONSE",
"BT_INDICATION",
"BT_ERROR",
};
/* This table contains the string representation for messages names */
static const char *strnames[] = {
"BT_GET_CAPABILITIES",
"BT_OPEN",
"BT_SET_CONFIGURATION",
"BT_NEW_STREAM",
"BT_START_STREAM",
"BT_STOP_STREAM",
"BT_SUSPEND_STREAM",
"BT_RESUME_STREAM",
"BT_CONTROL",
};
int bt_audio_service_open(void)
{
int sk;
int err;
struct sockaddr_un addr = {
AF_UNIX, BT_IPC_SOCKET_NAME
};
sk = socket(PF_LOCAL, SOCK_STREAM, 0);
if (sk < 0) {
err = errno;
fprintf(stderr, "%s: Cannot open socket: %s (%d)\n",
__FUNCTION__, strerror(err), err);
errno = err;
return -1;
}
if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
err = errno;
fprintf(stderr, "%s: connect() failed: %s (%d)\n",
__FUNCTION__, strerror(err), err);
close(sk);
errno = err;
return -1;
}
return sk;
}
int bt_audio_service_close(int sk)
{
return close(sk);
}
int bt_audio_service_get_data_fd(int sk)
{
char cmsg_b[CMSG_SPACE(sizeof(int))], m;
int err, ret;
struct iovec iov = { &m, sizeof(m) };
struct msghdr msgh;
struct cmsghdr *cmsg;
memset(&msgh, 0, sizeof(msgh));
msgh.msg_iov = &iov;
msgh.msg_iovlen = 1;
msgh.msg_control = &cmsg_b;
msgh.msg_controllen = CMSG_LEN(sizeof(int));
ret = recvmsg(sk, &msgh, 0);
if (ret < 0) {
err = errno;
fprintf(stderr, "%s: Unable to receive fd: %s (%d)\n",
__FUNCTION__, strerror(err), err);
errno = err;
return -1;
}
/* Receive auxiliary data in msgh */
for (cmsg = CMSG_FIRSTHDR(&msgh); cmsg != NULL;
cmsg = CMSG_NXTHDR(&msgh, cmsg)) {
if (cmsg->cmsg_level == SOL_SOCKET
&& cmsg->cmsg_type == SCM_RIGHTS) {
memcpy(&ret, CMSG_DATA(cmsg), sizeof(int));
return ret;
}
}
errno = EINVAL;
return -1;
}
const char *bt_audio_strtype(uint8_t type)
{
if (type >= ARRAY_SIZE(strtypes))
return NULL;
return strtypes[type];
}
const char *bt_audio_strname(uint8_t name)
{
if (name >= ARRAY_SIZE(strnames))
return NULL;
return strnames[name];
}
|
