manager.c

这是Linux环境下的蓝牙源代码

	} else {
		char hs_address[18];

		headset_set_authorized(device);

		ba2str(&device->dst, hs_address);

		debug("Accepted headset connection from %s for %s",
						hs_address, device->path);
		headset_set_state(device, HEADSET_STATE_CONNECTED);
	}
}

static void ag_io_cb(GIOChannel *chan, int err, const bdaddr_t *src,
			const bdaddr_t *dst, gpointer data)
{
	const char *uuid;
	struct audio_device *device;
	gboolean hfp_active;

	if (err < 0) {
		error("accept: %s (%d)", strerror(-err), -err);
		return;
	}

	if (chan == hsp_ag_server) {
		hfp_active = FALSE;
		uuid = HSP_AG_UUID;
	} else {
		hfp_active = TRUE;
		uuid = HFP_AG_UUID;
	}

	device = manager_find_device(dst, NULL, FALSE);
	if (!device)
		goto drop;

	if (headset_get_state(device) > HEADSET_STATE_DISCONNECTED) {
		debug("Refusing new connection since one already exists");
		goto drop;
	}

	set_hfp_active(device, hfp_active);

	if (headset_connect_rfcomm(device, chan) < 0) {
		error("Allocating new GIOChannel failed!");
		goto drop;
	}

	err = service_req_auth(&device->src, &device->dst, uuid, auth_cb,
				device);
	if (err < 0) {
		debug("Authorization denied: %s", strerror(-err));
		headset_close_rfcomm(device);
		return;
	}

	headset_set_state(device, HEADSET_STATE_CONNECT_IN_PROGRESS);

	return;

drop:
	g_io_channel_close(chan);
	g_io_channel_unref(chan);
	return;
}

static void hs_io_cb(GIOChannel *chan, int err, const bdaddr_t *src,
		const bdaddr_t *dst, void *data)
{
	/*Stub*/
	return;
}

static int headset_server_init(DBusConnection *conn, GKeyFile *config)
{
	uint8_t chan = DEFAULT_HS_AG_CHANNEL;
	sdp_record_t *record;
	gboolean hfp = TRUE, master = TRUE;
	GError *err = NULL;
	uint32_t features, flags;

	if (!enabled.headset)
		return 0;

	if (config) {
		gboolean tmp;

		tmp = g_key_file_get_boolean(config, "General", "Master",
						&err);
		if (err) {
			debug("audio.conf: %s", err->message);
			g_error_free(err);
			err = NULL;
		} else
			master = tmp;

		tmp = g_key_file_get_boolean(config, "Headset", "HFP",
						&err);
		if (err) {
			debug("audio.conf: %s", err->message);
			g_error_free(err);
			err = NULL;
		} else
			hfp = tmp;
	}

	flags = RFCOMM_LM_SECURE;

	if (master)
		flags |= RFCOMM_LM_MASTER;

	hsp_ag_server = bt_rfcomm_listen(BDADDR_ANY, chan, flags, ag_io_cb,
				NULL);
	if (!hsp_ag_server)
		return -1;

	record = hsp_ag_record(chan);
	if (!record) {
		error("Unable to allocate new service record");
		return -1;
	}

	if (add_record_to_server(BDADDR_ANY, record) < 0) {
		error("Unable to register HS AG service record");
		sdp_record_free(record);
		g_io_channel_unref(hsp_ag_server);
		hsp_ag_server = NULL;
		return -1;
	}
	hsp_ag_record_id = record->handle;

	features = headset_config_init(config);

	if (!hfp)
		return 0;

	chan = DEFAULT_HF_AG_CHANNEL;

	hfp_ag_server = bt_rfcomm_listen(BDADDR_ANY, chan, flags, ag_io_cb,
				NULL);
	if (!hfp_ag_server)
		return -1;

	record = hfp_ag_record(chan, features);
	if (!record) {
		error("Unable to allocate new service record");
		return -1;
	}

	if (add_record_to_server(BDADDR_ANY, record) < 0) {
		error("Unable to register HF AG service record");
		sdp_record_free(record);
		g_io_channel_unref(hfp_ag_server);
		hfp_ag_server = NULL;
		return -1;
	}
	hfp_ag_record_id = record->handle;

	return 0;
}

static int gateway_server_init(DBusConnection *conn, GKeyFile *config)
{
	uint8_t chan = DEFAULT_HSP_HS_CHANNEL;
	sdp_record_t *record;
	gboolean master = TRUE;
	GError *err = NULL;
	uint32_t flags;

	if (!enabled.gateway)
		return 0;

	if (config) {
		gboolean tmp;

		tmp = g_key_file_get_boolean(config, "General", "Master",
						&err);
		if (err) {
			debug("audio.conf: %s", err->message);
			g_error_free(err);
			err = NULL;
		} else
			master = tmp;
	}

	flags = RFCOMM_LM_SECURE;

	if (master)
		flags |= RFCOMM_LM_MASTER;

	hsp_hs_server = bt_rfcomm_listen(BDADDR_ANY, chan, flags, hs_io_cb,
				NULL);
	if (!hsp_hs_server)
		return -1;

	record = hsp_hs_record(chan);
	if (!record) {
		error("Unable to allocate new service record");
		return -1;
	}

	if (add_record_to_server(BDADDR_ANY, record) < 0) {
		error("Unable to register HSP HS service record");
		sdp_record_free(record);
		g_io_channel_unref(hsp_hs_server);
		hsp_hs_server = NULL;
		return -1;
	}

	hsp_hs_record_id = record->handle;

	return 0;
}

static void server_exit(void)
{
	if (hsp_ag_record_id) {
		remove_record_from_server(hsp_ag_record_id);
		hsp_ag_record_id = 0;
	}

	if (hsp_ag_server) {
		g_io_channel_unref(hsp_ag_server);
		hsp_ag_server = NULL;
	}

	if (hsp_hs_record_id) {
		remove_record_from_server(hsp_hs_record_id);
		hsp_hs_record_id = 0;
	}

	if (hsp_hs_server) {
		g_io_channel_unref(hsp_hs_server);
		hsp_hs_server = NULL;
	}

	if (hfp_ag_record_id) {
		remove_record_from_server(hfp_ag_record_id);
		hfp_ag_record_id = 0;
	}

	if (hfp_ag_server) {
		g_io_channel_unref(hfp_ag_server);
		hfp_ag_server = NULL;
	}
}

static int audio_probe(struct btd_device_driver *driver,
			struct btd_device *device, GSList *records)
{
	struct adapter *adapter = device_get_adapter(device);
	const gchar *path = device_get_path(device);
	const char *source, *destination;
	bdaddr_t src, dst;
	struct audio_device *dev;

	source = adapter_get_address(adapter);
	destination = device_get_address(device);

	str2ba(source, &src);
	str2ba(destination, &dst);

	dev = manager_find_device(&dst, NULL, FALSE);
	if (!dev) {
		dev = device_register(connection, path, &src, &dst);
		if (!dev)
			return -EINVAL;
		devices = g_slist_append(devices, dev);
	}

	g_slist_foreach(records, (GFunc) handle_record, dev);

	return 0;
}

static void audio_remove(struct btd_device_driver *driver,
			struct btd_device *device)
{
	struct audio_device *dev;
	const char *destination = device_get_address(device);
	bdaddr_t dst;

	str2ba(destination, &dst);

	dev = manager_find_device(&dst, NULL, FALSE);
	if (!dev)
		return;

	devices = g_slist_remove(devices, dev);

	device_unregister(dev);
}

static struct btd_device_driver audio_driver = {
	.name	= "audio",
	.uuids	= BTD_UUIDS(HSP_HS_UUID, HFP_HS_UUID, HSP_AG_UUID, HFP_AG_UUID,
			ADVANCED_AUDIO_UUID, A2DP_SOURCE_UUID, A2DP_SINK_UUID,
			AVRCP_TARGET_UUID, AVRCP_REMOTE_UUID),
	.probe	= audio_probe,
	.remove	= audio_remove,
};

int audio_manager_init(DBusConnection *conn, GKeyFile *config)
{
	char **list;
	int i;

	connection = dbus_connection_ref(conn);

	if (!config)
		goto proceed;

	list = g_key_file_get_string_list(config, "General", "Enable",
						NULL, NULL);
	for (i = 0; list && list[i] != NULL; i++) {
		if (g_str_equal(list[i], "Headset"))
			enabled.headset = TRUE;
		else if (g_str_equal(list[i], "Gateway"))
			enabled.gateway = TRUE;
		else if (g_str_equal(list[i], "Sink"))
			enabled.sink = TRUE;
		else if (g_str_equal(list[i], "Source"))
			enabled.source = TRUE;
		else if (g_str_equal(list[i], "Control"))
			enabled.control = TRUE;
	}
	g_strfreev(list);

	list = g_key_file_get_string_list(config, "General", "Disable",
						NULL, NULL);
	for (i = 0; list && list[i] != NULL; i++) {
		if (g_str_equal(list[i], "Headset"))
			enabled.headset = FALSE;
		else if (g_str_equal(list[i], "Gateway"))
			enabled.gateway = FALSE;
		else if (g_str_equal(list[i], "Sink"))
			enabled.sink = FALSE;
		else if (g_str_equal(list[i], "Source"))
			enabled.source = FALSE;
		else if (g_str_equal(list[i], "Control"))
			enabled.control = FALSE;
	}
	g_strfreev(list);

proceed:
	if (enabled.headset) {
		if (headset_server_init(conn, config) < 0)
			goto failed;
	}

	if (enabled.gateway) {
		if (gateway_server_init(conn, config) < 0)
			goto failed;
	}

	if (enabled.source || enabled.sink) {
		if (a2dp_init(conn, config) < 0)
			goto failed;
	}

	if (enabled.control && avrcp_init(conn, config) < 0)
		goto failed;

	btd_register_device_driver(&audio_driver);

	return 0;
failed:
	audio_manager_exit();
	return -1;
}

void audio_manager_exit(void)
{
	server_exit();

	dbus_connection_unref(connection);

	btd_unregister_device_driver(&audio_driver);

	connection = NULL;
}

struct audio_device *manager_get_connected_device(void)
{
	GSList *l;

	for (l = devices; l != NULL; l = g_slist_next(l)) {
		struct audio_device *device = l->data;

		if ((device->sink || device->source) &&
				avdtp_is_connected(&device->src, &device->dst))
			return device;

		if (device->headset && headset_is_active(device))
			return device;
	}

	return NULL;
}

struct audio_device *manager_find_device(const bdaddr_t *bda, const char *interface,
					gboolean connected)
{
	GSList *l;

	if (!bacmp(bda, BDADDR_ANY) && !interface && !connected)
		return devices->data;

	for (l = devices; l != NULL; l = l->next) {
		struct audio_device *dev = l->data;

		if (bacmp(bda, BDADDR_ANY) && bacmp(&dev->dst, bda))
			continue;

		if (interface && !strcmp(AUDIO_HEADSET_INTERFACE, interface)
				&& !dev->headset)
			continue;

		if (interface && !strcmp(AUDIO_SINK_INTERFACE, interface)
				&& !dev->sink)
			continue;

		if (interface && !strcmp(AUDIO_SOURCE_INTERFACE, interface)
				&& !dev->source)
			continue;

		if (interface && !strcmp(AUDIO_CONTROL_INTERFACE, interface)
				&& !dev->control)
			continue;

		if (connected && !device_is_connected(dev, interface))
			continue;

		return dev;
	}

	return NULL;
}