manager.c

BlueZ源码

	if (!adapter->hfp_ag_server)
		goto failed;

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

	if (add_record_to_server(&adapter->src, record) < 0) {
		error("Unable to register HF AG service record");
		sdp_record_free(record);
		goto failed;
	}
	adapter->hfp_ag_record_id = record->handle;

	return 0;

failed:
	if (adapter->hsp_ag_server) {
		g_io_channel_unref(adapter->hsp_ag_server);
		adapter->hsp_ag_server = NULL;
	}

	if (adapter->hfp_ag_server) {
		g_io_channel_unref(adapter->hfp_ag_server);
		adapter->hfp_ag_server = NULL;
	}

	return -1;
}

static int gateway_server_init(struct audio_adapter *adapter)
{
	uint8_t chan = DEFAULT_HSP_HS_CHANNEL;
	sdp_record_t *record;
	gboolean master = TRUE;
	GError *err = NULL;
	uint32_t flags;

	if (config) {
		gboolean tmp;

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

	flags = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT;

	if (master)
		flags |= RFCOMM_LM_MASTER;

	adapter->hsp_hs_server = bt_rfcomm_listen(&adapter->src, chan, flags,
				hs_io_cb, adapter);
	if (!adapter->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(&adapter->src, record) < 0) {
		error("Unable to register HSP HS service record");
		sdp_record_free(record);
		g_io_channel_unref(adapter->hsp_hs_server);
		adapter->hsp_hs_server = NULL;
		return -1;
	}

	adapter->hsp_hs_record_id = record->handle;

	return 0;
}

static int audio_probe(struct btd_device *device, GSList *uuids)
{
	struct btd_adapter *adapter = device_get_adapter(device);
	bdaddr_t src, dst;
	struct audio_device *audio_dev;

	adapter_get_address(adapter, &src);
	device_get_address(device, &dst);

	audio_dev = manager_get_device(&src, &dst);
	if (!audio_dev) {
		debug("audio_probe: unable to get a device object");
		return -1;
	}

	g_slist_foreach(uuids, (GFunc) handle_uuid, audio_dev);

	return 0;
}

static void audio_remove(struct btd_device *device)
{
	struct audio_device *dev;
	bdaddr_t bdaddr;

	device_get_address(device, &bdaddr);

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

	devices = g_slist_remove(devices, dev);

	device_unregister(dev);
}

static struct audio_adapter *create_audio_adapter(const char *path, bdaddr_t *src)
{
	struct audio_adapter *adp;

	adp = g_new0(struct audio_adapter, 1);
	adp->path = g_strdup(path);
	bacpy(&adp->src, src);

	return adp;
}

static struct audio_adapter *get_audio_adapter(struct btd_adapter *adapter)
{
	struct audio_adapter *adp;
	const gchar *path = adapter_get_path(adapter);
	bdaddr_t src;

	adapter_get_address(adapter, &src);

	adp = find_adapter(adapters, path);
	if (!adp) {
		adp = create_audio_adapter(path, &src);
		if (!adp)
			return NULL;
		adapters = g_slist_append(adapters, adp);
	}

	return adp;
}

static int headset_server_probe(struct btd_adapter *adapter)
{
	struct audio_adapter *adp;
	const gchar *path = adapter_get_path(adapter);

	DBG("path %s", path);

	adp = get_audio_adapter(adapter);
	if (!adp)
		return -EINVAL;

	return headset_server_init(adp);
}

static void headset_server_remove(struct btd_adapter *adapter)
{
	struct audio_adapter *adp;
	const gchar *path = adapter_get_path(adapter);

	DBG("path %s", path);

	adp = find_adapter(adapters, path);
	if (!adp)
		return;

	if (adp->hsp_ag_record_id) {
		remove_record_from_server(adp->hsp_ag_record_id);
		adp->hsp_ag_record_id = 0;
	}

	if (adp->hsp_ag_server) {
		g_io_channel_unref(adp->hsp_ag_server);
		adp->hsp_ag_server = NULL;
	}

	if (adp->hfp_ag_record_id) {
		remove_record_from_server(adp->hfp_ag_record_id);
		adp->hfp_ag_record_id = 0;
	}

	if (adp->hfp_ag_server) {
		g_io_channel_unref(adp->hfp_ag_server);
		adp->hfp_ag_server = NULL;
	}
}

static int gateway_server_probe(struct btd_adapter *adapter)
{
	struct audio_adapter *adp;
	const gchar *path = adapter_get_path(adapter);

	DBG("path %s", path);

	adp = get_audio_adapter(adapter);
	if (!adp)
		return -EINVAL;

	return gateway_server_init(adp);
}

static void gateway_server_remove(struct btd_adapter *adapter)
{
	struct audio_adapter *adp;
	const gchar *path = adapter_get_path(adapter);

	DBG("path %s", path);

	adp = find_adapter(adapters, path);
	if (!adp)
		return;

	if (adp->hsp_hs_record_id) {
		remove_record_from_server(adp->hsp_hs_record_id);
		adp->hsp_hs_record_id = 0;
	}

	if (adp->hsp_hs_server) {
		g_io_channel_unref(adp->hsp_hs_server);
		adp->hsp_hs_server = NULL;
	}
}

static int a2dp_server_probe(struct btd_adapter *adapter)
{
	struct audio_adapter *adp;
	const gchar *path = adapter_get_path(adapter);

	DBG("path %s", path);

	adp = get_audio_adapter(adapter);
	if (!adp)
		return -EINVAL;

	return a2dp_register(connection, &adp->src, config);
}

static void a2dp_server_remove(struct btd_adapter *adapter)
{
	struct audio_adapter *adp;
	const gchar *path = adapter_get_path(adapter);

	DBG("path %s", path);

	adp = find_adapter(adapters, path);
	if (!adp)
		return;

	return a2dp_unregister(&adp->src);
}

static int avrcp_server_probe(struct btd_adapter *adapter)
{
	struct audio_adapter *adp;
	const gchar *path = adapter_get_path(adapter);

	DBG("path %s", path);

	adp = get_audio_adapter(adapter);
	if (!adp)
		return -EINVAL;

	return avrcp_register(connection, &adp->src, config);
}

static void avrcp_server_remove(struct btd_adapter *adapter)
{
	struct audio_adapter *adp;
	const gchar *path = adapter_get_path(adapter);

	DBG("path %s", path);

	adp = find_adapter(adapters, path);
	if (!adp)
		return;

	return avrcp_unregister(&adp->src);
}

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,
};

static struct btd_adapter_driver headset_server_driver = {
	.name	= "audio-headset",
	.probe	= headset_server_probe,
	.remove	= headset_server_remove,
};

static struct btd_adapter_driver gateway_server_driver = {
	.name	= "audio-gateway",
	.probe	= gateway_server_probe,
	.remove	= gateway_server_remove,
};

static struct btd_adapter_driver a2dp_server_driver = {
	.name	= "audio-a2dp",
	.probe	= a2dp_server_probe,
	.remove	= a2dp_server_remove,
};

static struct btd_adapter_driver avrcp_server_driver = {
	.name	= "audio-control",
	.probe	= avrcp_server_probe,
	.remove	= avrcp_server_remove,
};

int audio_manager_init(DBusConnection *conn, GKeyFile *conf)
{
	char **list;
	int i;
	gboolean b;
	GError *err;

	connection = dbus_connection_ref(conn);

	if (!conf)
		goto proceed;

	config = conf;

	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);

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

	err = NULL;
	i = g_key_file_get_integer(config, "Headset", "MaxConnected",
					&err);
	if (err) {
		debug("audio.conf: %s", err->message);
		g_clear_error(&err);
	} else
		max_connected_headsets = i;

proceed:
	if (enabled.headset) {
		telephony_init();
		btd_register_adapter_driver(&headset_server_driver);
	}

	if (enabled.gateway)
		btd_register_adapter_driver(&gateway_server_driver);

	if (enabled.source || enabled.sink)
		btd_register_adapter_driver(&a2dp_server_driver);

	if (enabled.control)
		btd_register_adapter_driver(&avrcp_server_driver);

	btd_register_device_driver(&audio_driver);

	return 0;
}

void audio_manager_exit(void)
{
	dbus_connection_unref(connection);

	if (config)
		g_key_file_free(config);

	if (enabled.headset) {
		btd_unregister_adapter_driver(&headset_server_driver);
		telephony_exit();
	}

	if (enabled.gateway)
		btd_unregister_adapter_driver(&gateway_server_driver);

	if (enabled.source || enabled.sink)
		btd_unregister_adapter_driver(&a2dp_server_driver);

	if (enabled.control)
		btd_unregister_adapter_driver(&avrcp_server_driver);

	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;

	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;
}

struct audio_device *manager_get_device(const bdaddr_t *src,
					const bdaddr_t *dst)
{
	struct audio_device *dev;
	struct btd_adapter *adapter;
	struct btd_device *device;
	char addr[18];
	const char *path;

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


	ba2str(src, addr);

	adapter = manager_find_adapter(src);
	if (!adapter) {
		error("Unable to get a btd_adapter object for %s",
				addr);
		return NULL;
	}

	ba2str(dst, addr);

	device = adapter_get_device(connection, adapter, addr);
	if (!device) {
		error("Unable to get btd_device object for %s", addr);
		return NULL;
	}

	path = device_get_path(device);

	dev = device_register(connection, path, src, dst);
	if (!dev)
		return NULL;

	dev->btd_dev = device;

	devices = g_slist_append(devices, dev);

	return dev;
}

gboolean manager_allow_headset_connection(bdaddr_t *src)
{
	GSList *l;
	int connected = 0;

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

		if (bacmp(&dev->src, src))
			continue;

		if (!hs)
			continue;

		if (headset_get_state(dev) > HEADSET_STATE_DISCONNECTED)
			connected++;

		if (connected >= max_connected_headsets)
			return FALSE;
	}

	return TRUE;
}