1 files changed, 119 insertions, 0 deletions
diff --git a/audio/ipc.c b/audio/ipc.c
new file mode 100644
index 00000000..e7b712da
--- /dev/null
+++ b/audio/ipc.c
@@ -0,0 +1,119 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2004-2008  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"
+
+/* This table contains the string representation for messages */
+static const char *strmsg[] = {
+	"BT_GETCAPABILITIES_REQ",
+	"BT_GETCAPABILITIES_RSP",
+	"BT_SETCONFIGURATION_REQ",
+	"BT_SETCONFIGURATION_RSP",
+	"BT_STREAMSTART_REQ",
+	"BT_STREAMSTART_RSP",
+	"BT_STREAMSTOP_REQ",
+	"BT_STREAMSTOP_RSP",
+	"BT_STREAMSUSPEND_IND",
+	"BT_STREAMRESUME_IND",
+	"BT_CONTROL_REQ",
+	"BT_CONTROL_RSP",
+	"BT_CONTROL_IND",
+	"BT_STREAMFD_IND",
+};
+
+int bt_audio_service_open()
+{
+	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)
+			return (*(int *) CMSG_DATA(cmsg));
+	}
+
+	errno = EINVAL;
+	return -1;
+}
+
+const char *bt_audio_strmsg(int type)
+{
+	if (type < 0 || type > (sizeof(strmsg) / sizeof(strmsg[0])))
+		return NULL;
+
+	return strmsg[type];
+}
+