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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2010 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];
}
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