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/*
* Copyright (C) 2014 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 com.android.bluetooth.a2dp;
import android.bluetooth.BluetoothAudioConfig;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothProfile;
import android.bluetooth.IBluetoothA2dpSink;
import android.util.Log;
import com.android.bluetooth.btservice.ProfileService;
import com.android.bluetooth.Utils;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* Provides Bluetooth A2DP Sink profile, as a service in the Bluetooth application.
* @hide
*/
public class A2dpSinkService extends ProfileService {
private static final boolean DBG = false;
private static final String TAG = "A2dpSinkService";
private A2dpSinkStateMachine mStateMachine;
private static A2dpSinkService sA2dpSinkService;
protected String getName() {
return TAG;
}
protected IProfileServiceBinder initBinder() {
return new BluetoothA2dpSinkBinder(this);
}
protected boolean start() {
mStateMachine = A2dpSinkStateMachine.make(this, this);
setA2dpSinkService(this);
return true;
}
protected boolean stop() {
mStateMachine.doQuit();
return true;
}
protected boolean cleanup() {
if (mStateMachine!= null) {
mStateMachine.cleanup();
}
clearA2dpSinkService();
return true;
}
//API Methods
public static synchronized A2dpSinkService getA2dpSinkService(){
if (sA2dpSinkService != null && sA2dpSinkService.isAvailable()) {
if (DBG) Log.d(TAG, "getA2dpSinkService(): returning " + sA2dpSinkService);
return sA2dpSinkService;
}
if (DBG) {
if (sA2dpSinkService == null) {
Log.d(TAG, "getA2dpSinkService(): service is NULL");
} else if (!(sA2dpSinkService.isAvailable())) {
Log.d(TAG,"getA2dpSinkService(): service is not available");
}
}
return null;
}
private static synchronized void setA2dpSinkService(A2dpSinkService instance) {
if (instance != null && instance.isAvailable()) {
if (DBG) Log.d(TAG, "setA2dpSinkService(): set to: " + sA2dpSinkService);
sA2dpSinkService = instance;
} else {
if (DBG) {
if (sA2dpSinkService == null) {
Log.d(TAG, "setA2dpSinkService(): service not available");
} else if (!sA2dpSinkService.isAvailable()) {
Log.d(TAG,"setA2dpSinkService(): service is cleaning up");
}
}
}
}
private static synchronized void clearA2dpSinkService() {
sA2dpSinkService = null;
}
public boolean connect(BluetoothDevice device) {
enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
"Need BLUETOOTH ADMIN permission");
int connectionState = mStateMachine.getConnectionState(device);
if (connectionState == BluetoothProfile.STATE_CONNECTED ||
connectionState == BluetoothProfile.STATE_CONNECTING) {
return false;
}
mStateMachine.sendMessage(A2dpSinkStateMachine.CONNECT, device);
return true;
}
boolean disconnect(BluetoothDevice device) {
enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
"Need BLUETOOTH ADMIN permission");
int connectionState = mStateMachine.getConnectionState(device);
if (connectionState != BluetoothProfile.STATE_CONNECTED &&
connectionState != BluetoothProfile.STATE_CONNECTING) {
return false;
}
mStateMachine.sendMessage(A2dpSinkStateMachine.DISCONNECT, device);
return true;
}
public List<BluetoothDevice> getConnectedDevices() {
enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
return mStateMachine.getConnectedDevices();
}
List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
return mStateMachine.getDevicesMatchingConnectionStates(states);
}
int getConnectionState(BluetoothDevice device) {
enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
return mStateMachine.getConnectionState(device);
}
BluetoothAudioConfig getAudioConfig(BluetoothDevice device) {
enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
return mStateMachine.getAudioConfig(device);
}
//Binder object: Must be static class or memory leak may occur
private static class BluetoothA2dpSinkBinder extends IBluetoothA2dpSink.Stub
implements IProfileServiceBinder {
private A2dpSinkService mService;
private A2dpSinkService getService() {
if (!Utils.checkCaller()) {
Log.w(TAG,"A2dp call not allowed for non-active user");
return null;
}
if (mService != null && mService.isAvailable()) {
return mService;
}
return null;
}
BluetoothA2dpSinkBinder(A2dpSinkService svc) {
mService = svc;
}
public boolean cleanup() {
mService = null;
return true;
}
public boolean connect(BluetoothDevice device) {
A2dpSinkService service = getService();
if (service == null) return false;
return service.connect(device);
}
public boolean disconnect(BluetoothDevice device) {
A2dpSinkService service = getService();
if (service == null) return false;
return service.disconnect(device);
}
public List<BluetoothDevice> getConnectedDevices() {
A2dpSinkService service = getService();
if (service == null) return new ArrayList<BluetoothDevice>(0);
return service.getConnectedDevices();
}
public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
A2dpSinkService service = getService();
if (service == null) return new ArrayList<BluetoothDevice>(0);
return service.getDevicesMatchingConnectionStates(states);
}
public int getConnectionState(BluetoothDevice device) {
A2dpSinkService service = getService();
if (service == null) return BluetoothProfile.STATE_DISCONNECTED;
return service.getConnectionState(device);
}
public BluetoothAudioConfig getAudioConfig(BluetoothDevice device) {
A2dpSinkService service = getService();
if (service == null) return null;
return service.getAudioConfig(device);
}
};
@Override
public void dump(StringBuilder sb) {
super.dump(sb);
if (mStateMachine != null) {
mStateMachine.dump(sb);
}
}
}
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