C++ bt_io_connect函数代码示例

static void rfcomm_connect(const char *src, const char *dst, uint8_t ch,
						int disconn, int sec)
{
	struct io_data *data;
	GError *err = NULL;

	printf("Connecting to %s RFCOMM channel %u\n", dst, ch);

	data = io_data_new(NULL, -1, disconn, -1);

	if (src)
		data->io = bt_io_connect(connect_cb, data,
						(GDestroyNotify) io_data_unref,
						&err,
						BT_IO_OPT_SOURCE, src,
						BT_IO_OPT_DEST, dst,
						BT_IO_OPT_CHANNEL, ch,
						BT_IO_OPT_SEC_LEVEL, sec,
						BT_IO_OPT_INVALID);
	else
		data->io = bt_io_connect(connect_cb, data,
						(GDestroyNotify) io_data_unref,
						&err,
						BT_IO_OPT_DEST, dst,
						BT_IO_OPT_CHANNEL, ch,
						BT_IO_OPT_SEC_LEVEL, sec,
						BT_IO_OPT_INVALID);

	if (!data->io) {
		printf("Connecting to %s failed: %s\n", dst, err->message);
		g_error_free(err);
		exit(EXIT_FAILURE);
	}
}

static GIOChannel *l2cap_connect(GObexTransportType transport, GError **err)
{
	if (option_source)
		return bt_io_connect(conn_callback,
					GUINT_TO_POINTER(transport),
					NULL, err,
					BT_IO_OPT_SOURCE, option_source,
					BT_IO_OPT_DEST, option_dest,
					BT_IO_OPT_PSM, option_channel,
					BT_IO_OPT_MODE, BT_IO_MODE_ERTM,
					BT_IO_OPT_OMTU, option_omtu,
					BT_IO_OPT_IMTU, option_imtu,
					BT_IO_OPT_SEC_LEVEL, BT_IO_SEC_LOW,
					BT_IO_OPT_INVALID);

	return bt_io_connect(conn_callback,
					GUINT_TO_POINTER(transport),
					NULL, err,
					BT_IO_OPT_DEST, option_dest,
					BT_IO_OPT_PSM, option_channel,
					BT_IO_OPT_MODE, BT_IO_MODE_ERTM,
					BT_IO_OPT_OMTU, option_omtu,
					BT_IO_OPT_IMTU, option_imtu,
					BT_IO_OPT_SEC_LEVEL, BT_IO_SEC_LOW,
					BT_IO_OPT_INVALID);
}

static void sco_connect(const char *src, const char *dst, int disconn,
								int voice)
{
	struct io_data *data;
	GError *err = NULL;

	printf("Connecting SCO to %s\n", dst);

	data = io_data_new(NULL, -1, disconn, -1);

	if (src)
		data->io = bt_io_connect(connect_cb, data,
						(GDestroyNotify) io_data_unref,
						&err,
						BT_IO_OPT_SOURCE, src,
						BT_IO_OPT_DEST, dst,
						BT_IO_OPT_VOICE, voice,
						BT_IO_OPT_INVALID);
	else
		data->io = bt_io_connect(connect_cb, data,
						(GDestroyNotify) io_data_unref,
						&err,
						BT_IO_OPT_DEST, dst,
						BT_IO_OPT_VOICE, voice,
						BT_IO_OPT_INVALID);

	if (!data->io) {
		printf("Connecting to %s failed: %s\n", dst, err->message);
		g_error_free(err);
		exit(EXIT_FAILURE);
	}
}

GIOChannel *gatt_connect(const char *src, const char *dst,
				const char *dst_type, const char *sec_level,
				int psm, int mtu, BtIOConnect connect_cb,
				GError **gerr)
{
	GIOChannel *chan;
	bdaddr_t sba, dba;
	uint8_t dest_type;
	GError *tmp_err = NULL;
	BtIOSecLevel sec;

	str2ba(dst, &dba);

	/* Local adapter */
	if (src != NULL) {
		if (!strncmp(src, "hci", 3))
			hci_devba(atoi(src + 3), &sba);
		else
			str2ba(src, &sba);
	} else
		bacpy(&sba, BDADDR_ANY);

	/* Not used for BR/EDR */
	if (strcmp(dst_type, "random") == 0)
		dest_type = BDADDR_LE_RANDOM;
	else
		dest_type = BDADDR_LE_PUBLIC;

	if (strcmp(sec_level, "medium") == 0)
		sec = BT_IO_SEC_MEDIUM;
	else if (strcmp(sec_level, "high") == 0)
		sec = BT_IO_SEC_HIGH;
	else
		sec = BT_IO_SEC_LOW;

	if (psm == 0)
		chan = bt_io_connect(connect_cb, NULL, NULL, &tmp_err,
				BT_IO_OPT_SOURCE_BDADDR, &sba,
				BT_IO_OPT_SOURCE_TYPE, BDADDR_LE_PUBLIC,
				BT_IO_OPT_DEST_BDADDR, &dba,
				BT_IO_OPT_DEST_TYPE, dest_type,
				BT_IO_OPT_CID, ATT_CID,
				BT_IO_OPT_SEC_LEVEL, sec,
				BT_IO_OPT_INVALID);
	else
		chan = bt_io_connect(connect_cb, NULL, NULL, &tmp_err,
				BT_IO_OPT_SOURCE_BDADDR, &sba,
				BT_IO_OPT_DEST_BDADDR, &dba,
				BT_IO_OPT_PSM, psm,
				BT_IO_OPT_IMTU, mtu,
				BT_IO_OPT_SEC_LEVEL, sec,
				BT_IO_OPT_INVALID);

	if (tmp_err) {
		g_propagate_error(gerr, tmp_err);
		return NULL;
	}

	return chan;
}

static void l2cap_connect(const char *src, const char *dst, uint8_t addr_type,
				uint16_t psm, uint16_t cid, int disconn,
				int sec, int prio)
{
	struct io_data *data;
	GError *err = NULL;
	uint8_t src_type;

	printf("Connecting to %s L2CAP PSM %u\n", dst, psm);

	data = io_data_new(NULL, -1, disconn, -1);

	if (addr_type != BDADDR_BREDR)
		src_type = BDADDR_LE_PUBLIC;
	else
		src_type = BDADDR_BREDR;

	if (src)
		data->io = bt_io_connect(connect_cb, data,
					(GDestroyNotify) io_data_unref,
					&err,
					BT_IO_OPT_SOURCE, src,
					BT_IO_OPT_SOURCE_TYPE, src_type,
					BT_IO_OPT_DEST, dst,
					BT_IO_OPT_DEST_TYPE, addr_type,
					BT_IO_OPT_PSM, psm,
					BT_IO_OPT_CID, cid,
					BT_IO_OPT_SEC_LEVEL, sec,
					BT_IO_OPT_PRIORITY, prio,
					BT_IO_OPT_INVALID);
	else
		data->io = bt_io_connect(connect_cb, data,
					(GDestroyNotify) io_data_unref,
					&err,
					BT_IO_OPT_SOURCE_TYPE, src_type,
					BT_IO_OPT_DEST, dst,
					BT_IO_OPT_DEST_TYPE, addr_type,
					BT_IO_OPT_PSM, psm,
					BT_IO_OPT_CID, cid,
					BT_IO_OPT_SEC_LEVEL, sec,
					BT_IO_OPT_PRIORITY, prio,
					BT_IO_OPT_INVALID);

	if (!data->io) {
		printf("Connecting to %s failed: %s\n", dst, err->message);
		g_error_free(err);
		exit(EXIT_FAILURE);
	}
}

static void dev_connect(struct input_device *idev,
			struct input_conn *iconn,
			GError **err)
{
	struct fake_input *fake;

	DBG("");

	fake = iconn->fake;

	if (fake) {
		/* Fake input device */
		if (fake->connect(iconn, err))
			fake->flags |= FI_FLAG_CONNECTED;
	} else {
		/* HID devices */
		GIOChannel *io;

		if (idev->disable_sdp)
			bt_clear_cached_session(&idev->src, &idev->dst);

		io = bt_io_connect(BT_IO_L2CAP, control_connect_cb, iconn,
					NULL, err,
					BT_IO_OPT_SOURCE_BDADDR, &idev->src,
					BT_IO_OPT_DEST_BDADDR, &idev->dst,
					BT_IO_OPT_PSM, L2CAP_PSM_HIDP_CTRL,
					BT_IO_OPT_SEC_LEVEL, BT_IO_SEC_LOW,
					BT_IO_OPT_INVALID);
		iconn->ctrl_io = io;
	}

}

/* Connect and initiate BNEP session */
int connection_connect(struct btd_service *service)
{
	struct network_conn *nc = btd_service_get_user_data(service);
	struct network_peer *peer = nc->peer;
	uint16_t id = get_service_id(service);
	GError *err = NULL;
	const bdaddr_t *src;
	const bdaddr_t *dst;

	DBG("id %u", id);

	if (nc->state != DISCONNECTED)
		return -EALREADY;

	src = btd_adapter_get_address(device_get_adapter(peer->device));
	dst = device_get_address(peer->device);

	nc->io = bt_io_connect(connect_cb, nc,
				NULL, &err,
				BT_IO_OPT_SOURCE_BDADDR, src,
				BT_IO_OPT_DEST_BDADDR, dst,
				BT_IO_OPT_PSM, BNEP_PSM,
				BT_IO_OPT_SEC_LEVEL, BT_IO_SEC_MEDIUM,
				BT_IO_OPT_OMTU, BNEP_MTU,
				BT_IO_OPT_IMTU, BNEP_MTU,
				BT_IO_OPT_INVALID);
	if (!nc->io)
		return -EIO;

	nc->state = CONNECTING;

	return 0;
}

static int dev_connect(struct input_device *idev)
{
    GError *err = NULL;
    GIOChannel *io;

    if (idev->disable_sdp)
        bt_clear_cached_session(&idev->src, &idev->dst);

    io = bt_io_connect(control_connect_cb, idev,
                       NULL, &err,
                       BT_IO_OPT_SOURCE_BDADDR, &idev->src,
                       BT_IO_OPT_DEST_BDADDR, &idev->dst,
                       BT_IO_OPT_PSM, L2CAP_PSM_HIDP_CTRL,
                       BT_IO_OPT_SEC_LEVEL, BT_IO_SEC_LOW,
                       BT_IO_OPT_INVALID);
    idev->ctrl_io = io;

    if (err == NULL)
        return 0;

    error("%s", err->message);
    g_error_free(err);

    return -EIO;
}

/* These are functions to be called from unix.c for audio system
 * ifaces (alsa, gstreamer, etc.) */
unsigned int gateway_request_stream(struct audio_device *dev,
				gateway_stream_cb_t cb, void *user_data)
{
	struct gateway *gw = dev->gateway;
	GError *err = NULL;
	GIOChannel *io;

	if (!gw->rfcomm) {
		if (get_records(dev) < 0)
			return 0;
	} else if (!gw->sco) {
		io = bt_io_connect(sco_connect_cb, dev, NULL, &err,
				BT_IO_OPT_SOURCE_BDADDR, &dev->src,
				BT_IO_OPT_DEST_BDADDR, &dev->dst,
				BT_IO_OPT_SEC_LEVEL, BT_IO_SEC_MEDIUM,
				BT_IO_OPT_INVALID);
		if (!io) {
			error("%s", err->message);
			g_error_free(err);
			return 0;
		}
	} else
		g_idle_add(request_stream_cb, dev);

	return connect_cb_new(gw, cb, user_data);
}

struct avctp *avctp_connect(const bdaddr_t *src, const bdaddr_t *dst)
{
	struct avctp *session;
	GError *err = NULL;
	GIOChannel *io;

	session = avctp_get_internal(src, dst);
	if (!session)
		return NULL;

	if (session->state > AVCTP_STATE_DISCONNECTED)
		return session;

	avctp_set_state(session, AVCTP_STATE_CONNECTING);

	io = bt_io_connect(BT_IO_L2CAP, avctp_connect_cb, session, NULL, &err,
				BT_IO_OPT_SOURCE_BDADDR, &session->server->src,
				BT_IO_OPT_DEST_BDADDR, &session->dst,
				BT_IO_OPT_PSM, AVCTP_PSM,
				BT_IO_OPT_INVALID);
	if (err) {
		avctp_set_state(session, AVCTP_STATE_DISCONNECTED);
		error("%s", err->message);
		g_error_free(err);
		return NULL;
	}

	session->io = io;

	return session;
}

static void get_record_cb(sdp_list_t *recs, int err, gpointer user_data)
{
	struct serial_port *port = user_data;
	struct serial_device *device = port->device;
	sdp_record_t *record = NULL;
	sdp_list_t *protos;
	DBusMessage *reply;
	GError *gerr = NULL;

	if (!port->listener_id) {
		reply = NULL;
		goto failed;
	}

	if (err < 0) {
		error("Unable to get service record: %s (%d)", strerror(-err),
			-err);
		reply = failed(port->msg, strerror(-err));
		goto failed;
	}

	if (!recs || !recs->data) {
		error("No record found");
		reply = failed(port->msg, "No record found");
		goto failed;
	}

	record = recs->data;

	if (sdp_get_access_protos(record, &protos) < 0) {
		error("Unable to get access protos from port record");
		reply = failed(port->msg, "Invalid channel");
		goto failed;
	}

	port->channel = sdp_get_proto_port(protos, RFCOMM_UUID);

	sdp_list_foreach(protos, (sdp_list_func_t) sdp_list_free, NULL);
	sdp_list_free(protos, NULL);

	port->io = bt_io_connect(BT_IO_RFCOMM, rfcomm_connect_cb, port,
				NULL, &gerr,
				BT_IO_OPT_SOURCE_BDADDR, &device->src,
				BT_IO_OPT_DEST_BDADDR, &device->dst,
				BT_IO_OPT_CHANNEL, port->channel,
				BT_IO_OPT_INVALID);
	if (!port->io) {
		error("%s", gerr->message);
		reply = failed(port->msg, gerr->message);
		g_error_free(gerr);
		goto failed;
	}

	return;

failed:
	g_dbus_remove_watch(device->conn, port->listener_id);
	port->listener_id = 0;
	g_dbus_send_message(device->conn, reply);
}

static int connect_port(struct serial_port *port)
{
	struct serial_device *device = port->device;
	uuid_t uuid;
	int err;

	if (!port->uuid)
		goto connect;

	err = bt_string2uuid(&uuid, port->uuid);
	if (err < 0)
		return err;

	sdp_uuid128_to_uuid(&uuid);

	return bt_search_service(&device->src, &device->dst, &uuid,
				get_record_cb, port, NULL);

connect:
	port->io = bt_io_connect(BT_IO_RFCOMM, rfcomm_connect_cb, port,
				NULL, NULL,
				BT_IO_OPT_SOURCE_BDADDR, &device->src,
				BT_IO_OPT_DEST_BDADDR, &device->dst,
				BT_IO_OPT_CHANNEL, port->channel,
				BT_IO_OPT_INVALID);
	if (port->io)
		return 0;

	return -errno;
}

struct avctp *avctp_connect(struct audio_device *device)
{
	struct avctp *session;
	GError *err = NULL;
	GIOChannel *io;

	session = avctp_get_internal(device->btd_dev);
	if (!session)
		return NULL;

	if (session->state > AVCTP_STATE_DISCONNECTED)
		return session;

	avctp_set_state(session, AVCTP_STATE_CONNECTING);

	io = bt_io_connect(avctp_connect_cb, session, NULL, &err,
				BT_IO_OPT_SOURCE_BDADDR,
				adapter_get_address(session->server->adapter),
				BT_IO_OPT_DEST_BDADDR,
				device_get_address(session->device),
				BT_IO_OPT_SEC_LEVEL, BT_IO_SEC_MEDIUM,
				BT_IO_OPT_PSM, AVCTP_CONTROL_PSM,
				BT_IO_OPT_INVALID);
	if (err) {
		avctp_set_state(session, AVCTP_STATE_DISCONNECTED);
		error("%s", err->message);
		g_error_free(err);
		return NULL;
	}

	session->control = avctp_channel_create(session, io, NULL);
	g_io_channel_unref(io);

	return session;
}

int avctp_connect_browsing(struct avctp *session)
{
	GError *err = NULL;
	GIOChannel *io;

	if (session->state != AVCTP_STATE_CONNECTED)
		return -ENOTCONN;

	if (session->browsing != NULL)
		return 0;

	avctp_set_state(session, AVCTP_STATE_BROWSING_CONNECTING);

	io = bt_io_connect(avctp_connect_browsing_cb, session, NULL, &err,
				BT_IO_OPT_SOURCE_BDADDR,
				adapter_get_address(session->server->adapter),
				BT_IO_OPT_DEST_BDADDR,
				device_get_address(session->device),
				BT_IO_OPT_SEC_LEVEL, BT_IO_SEC_MEDIUM,
				BT_IO_OPT_PSM, AVCTP_BROWSING_PSM,
				BT_IO_OPT_MODE, L2CAP_MODE_ERTM,
				BT_IO_OPT_INVALID);
	if (err) {
		error("%s", err->message);
		g_error_free(err);
		return -EIO;
	}

	session->browsing = avctp_channel_create(session, io,
						avctp_destroy_browsing);
	g_io_channel_unref(io);

	return 0;
}

gboolean avrcp_connect(struct audio_device *dev)
{
	struct control *control = dev->control;
	GError *err = NULL;
	GIOChannel *io;

	if (control->state > AVCTP_STATE_DISCONNECTED)
		return TRUE;

	avctp_set_state(control, AVCTP_STATE_CONNECTING);

	io = bt_io_connect(BT_IO_L2CAP, avctp_connect_cb, control, NULL, &err,
				BT_IO_OPT_SOURCE_BDADDR, &dev->src,
				BT_IO_OPT_DEST_BDADDR, &dev->dst,
				BT_IO_OPT_PSM, AVCTP_PSM,
				BT_IO_OPT_INVALID);
	if (err) {
		avctp_set_state(control, AVCTP_STATE_DISCONNECTED);
		error("%s", err->message);
		g_error_free(err);
		return FALSE;
	}

	control->io = io;

	return TRUE;
}