/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.bluetooth;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
/**
* Represents a Bluetooth GATT Service
*
* <p> Gatt Service contains a collection of {@link BluetoothGattCharacteristic},
* as well as referenced services.
*/
public class BluetoothGattService {
/**
* Primary service
*/
public static final int SERVICE_TYPE_PRIMARY = 0;
/**
* Secondary service (included by primary services)
*/
public static final int SERVICE_TYPE_SECONDARY = 1;
/**
* The remote device his service is associated with.
* This applies to client applications only.
* @hide
*/
protected BluetoothDevice mDevice;
/**
* The UUID of this service.
* @hide
*/
protected UUID mUuid;
/**
* Instance ID for this service.
* @hide
*/
protected int mInstanceId;
/**
* Handle counter override (for conformance testing).
* @hide
*/
protected int mHandles = 0;
/**
* Service type (Primary/Secondary).
* @hide
*/
protected int mServiceType;
/**
* List of characteristics included in this service.
*/
protected List<BluetoothGattCharacteristic> mCharacteristics;
/**
* List of included services for this service.
*/
protected List<BluetoothGattService> mIncludedServices;
/**
* Whether the service uuid should be advertised.
*/
private boolean mAdvertisePreferred;
/**
* Create a new BluetoothGattService.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
*
* @param uuid The UUID for this service
* @param serviceType The type of this service,
* {@link BluetoothGattService#SERVICE_TYPE_PRIMARY} or
* {@link BluetoothGattService#SERVICE_TYPE_SECONDARY}
*/
public BluetoothGattService(UUID uuid, int serviceType) {
mDevice = null;
mUuid = uuid;
mInstanceId = 0;
mServiceType = serviceType;
mCharacteristics = new ArrayList<BluetoothGattCharacteristic>();
mIncludedServices = new ArrayList<BluetoothGattService>();
}
/**
* Create a new BluetoothGattService
* @hide
*/
/*package*/ BluetoothGattService(BluetoothDevice device, UUID uuid,
int instanceId, int serviceType) {
mDevice = device;
mUuid = uuid;
mInstanceId = instanceId;
mServiceType = serviceType;
mCharacteristics = new ArrayList<BluetoothGattCharacteristic>();
mIncludedServices = new ArrayList<BluetoothGattService>();
}
/**
* Returns the device associated with this service.
* @hide
*/
/*package*/ BluetoothDevice getDevice() {
return mDevice;
}
/**
* Add an included service to this service.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
*
* @param service The service to be added
* @return true, if the included service was added to the service
*/
public boolean addService(BluetoothGattService service) {
mIncludedServices.add(service);
return true;
}
/**
* Add a characteristic to this service.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
*
* @param characteristic The characteristics to be added
* @return true, if the characteristic was added to the service
*/
public boolean addCharacteristic(BluetoothGattCharacteristic characteristic) {
mCharacteristics.add(characteristic);
characteristic.setService(this);
return true;
}
/**
* Get characteristic by UUID and instanceId.
* @hide
*/
/*package*/ BluetoothGattCharacteristic getCharacteristic(UUID uuid, int instanceId) {
for(BluetoothGattCharacteristic characteristic : mCharacteristics) {
if (uuid.equals(characteristic.getUuid())
&& characteristic.getInstanceId() == instanceId)
return characteristic;
}
return null;
}
/**
* Force the instance ID.
* This is needed for conformance testing only.
* @hide
*/
public void setInstanceId(int instanceId) {
mInstanceId = instanceId;
}
/**
* Get the handle count override (conformance testing.
* @hide
*/
/*package*/ int getHandles() {
return mHandles;
}
/**
* Force the number of handles to reserve for this service.
* This is needed for conformance testing only.
* @hide
*/
public void setHandles(int handles) {
mHandles = handles;
}
/**
* Add an included service to the internal map.
* @hide
*/
/*package*/ void addIncludedService(BluetoothGattService includedService) {
mIncludedServices.add(includedService);
}
/**
* Returns the UUID of this service
*
* @return UUID of this service
*/
public UUID getUuid() {
return mUuid;
}
/**
* Returns the instance ID for this service
*
* <p>If a remote device offers multiple services with the same UUID
* (ex. multiple battery services for different batteries), the instance
* ID is used to distuinguish services.
*
* @return Instance ID of this service
*/
public int getInstanceId() {
return mInstanceId;
}
/**
* Get the type of this service (primary/secondary)
*/
public int getType() {
return mServiceType;
}
/**
* Get the list of included GATT services for this service.
*
* @return List of included services or empty list if no included services
* were discovered.
*/
public List<BluetoothGattService> getIncludedServices() {
return mIncludedServices;
}
/**
* Returns a list of characteristics included in this service.
*
* @return Characteristics included in this service
*/
public List<BluetoothGattCharacteristic> getCharacteristics() {
return mCharacteristics;
}
/**
* Returns a characteristic with a given UUID out of the list of
* characteristics offered by this service.
*
* <p>This is a convenience function to allow access to a given characteristic
* without enumerating over the list returned by {@link #getCharacteristics}
* manually.
*
* <p>If a remote service offers multiple characteristics with the same
* UUID, the first instance of a characteristic with the given UUID
* is returned.
*
* @return GATT characteristic object or null if no characteristic with the
* given UUID was found.
*/
public BluetoothGattCharacteristic getCharacteristic(UUID uuid) {
for(BluetoothGattCharacteristic characteristic : mCharacteristics) {
if (uuid.equals(characteristic.getUuid()))
return characteristic;
}
return null;
}
/**
* Returns whether the uuid of the service should be advertised.
* @hide
*/
public boolean isAdvertisePreferred() {
return mAdvertisePreferred;
}
/**
* Set whether the service uuid should be advertised.
* @hide
*/
public void setAdvertisePreferred(boolean advertisePreferred) {
this.mAdvertisePreferred = advertisePreferred;
}
}
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