src/com/android/bluetooth/a2dp/A2dpService.java - platform/packages/apps/Bluetooth - Git at Google

 /*
  * Copyright (C) 2012 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.BluetoothDevice;
 import android.bluetooth.BluetoothProfile;
 import android.bluetooth.BluetoothUuid;
 import android.bluetooth.IBluetoothA2dp;
 import android.content.Context;
 import android.content.Intent;
 import android.os.ParcelUuid;
 import android.provider.Settings;
 import android.util.Log;
 import com.android.bluetooth.avrcp.Avrcp;
 import com.android.bluetooth.btservice.ProfileService;
 import com.android.bluetooth.Utils;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;

 /**
  * Provides Bluetooth A2DP profile, as a service in the Bluetooth application.
  * @hide
  */
 public class A2dpService extends ProfileService {
     private static final boolean DBG = false;
     private static final String TAG="A2dpService";

     private A2dpStateMachine mStateMachine;
     private Avrcp mAvrcp;
     private static A2dpService sAd2dpService;
     static final ParcelUuid[] A2DP_SOURCE_UUID = {
         BluetoothUuid.AudioSource
     };
     static final ParcelUuid[] A2DP_SOURCE_SINK_UUIDS = {
         BluetoothUuid.AudioSource,
         BluetoothUuid.AudioSink
     };

     protected String getName() {
         return TAG;
     }

     protected IProfileServiceBinder initBinder() {
         return new BluetoothA2dpBinder(this);
     }

     protected boolean start() {
         mAvrcp = Avrcp.make(this);
         mStateMachine = A2dpStateMachine.make(this, this);
         setA2dpService(this);
         return true;
     }

     protected boolean stop() {
         if (mStateMachine != null) {
             mStateMachine.doQuit();
         }
         if (mAvrcp != null) {
             mAvrcp.doQuit();
         }
         return true;
     }

     protected boolean cleanup() {
         if (mStateMachine!= null) {
             mStateMachine.cleanup();
         }
         if (mAvrcp != null) {
             mAvrcp.cleanup();
             mAvrcp = null;
         }
         clearA2dpService();
         return true;
     }

     //API Methods

     public static synchronized A2dpService getA2dpService(){
         if (sAd2dpService != null && sAd2dpService.isAvailable()) {
             if (DBG) Log.d(TAG, "getA2DPService(): returning " + sAd2dpService);
             return sAd2dpService;
         }
         if (DBG)  {
             if (sAd2dpService == null) {
                 Log.d(TAG, "getA2dpService(): service is NULL");
             } else if (!(sAd2dpService.isAvailable())) {
                 Log.d(TAG,"getA2dpService(): service is not available");
             }
         }
         return null;
     }

     private static synchronized void setA2dpService(A2dpService instance) {
         if (instance != null && instance.isAvailable()) {
             if (DBG) Log.d(TAG, "setA2dpService(): set to: " + sAd2dpService);
             sAd2dpService = instance;
         } else {
             if (DBG)  {
                 if (sAd2dpService == null) {
                     Log.d(TAG, "setA2dpService(): service not available");
                 } else if (!sAd2dpService.isAvailable()) {
                     Log.d(TAG,"setA2dpService(): service is cleaning up");
                 }
             }
         }
     }

     private static synchronized void clearA2dpService() {
         sAd2dpService = null;
     }

     public boolean connect(BluetoothDevice device) {
         enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                        "Need BLUETOOTH ADMIN permission");

         if (getPriority(device) == BluetoothProfile.PRIORITY_OFF) {
             return false;
         }
         ParcelUuid[] featureUuids = device.getUuids();
         if ((BluetoothUuid.containsAnyUuid(featureUuids, A2DP_SOURCE_UUID)) &&
             !(BluetoothUuid.containsAllUuids(featureUuids ,A2DP_SOURCE_SINK_UUIDS))) {
             Log.e(TAG,"Remote does not have A2dp Sink UUID");
             return false;
         }

         int connectionState = mStateMachine.getConnectionState(device);
         if (connectionState == BluetoothProfile.STATE_CONNECTED ||
             connectionState == BluetoothProfile.STATE_CONNECTING) {
             return false;
         }

         mStateMachine.sendMessage(A2dpStateMachine.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(A2dpStateMachine.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);
     }

     public boolean setPriority(BluetoothDevice device, int priority) {
         enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                        "Need BLUETOOTH_ADMIN permission");
         Settings.Global.putInt(getContentResolver(),
             Settings.Global.getBluetoothA2dpSinkPriorityKey(device.getAddress()),
             priority);
         if (DBG) Log.d(TAG,"Saved priority " + device + " = " + priority);
         return true;
     }

     public int getPriority(BluetoothDevice device) {
         enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                        "Need BLUETOOTH_ADMIN permission");
         int priority = Settings.Global.getInt(getContentResolver(),
             Settings.Global.getBluetoothA2dpSinkPriorityKey(device.getAddress()),
             BluetoothProfile.PRIORITY_UNDEFINED);
         return priority;
     }

     /* Absolute volume implementation */
     public boolean isAvrcpAbsoluteVolumeSupported() {
         return mAvrcp.isAbsoluteVolumeSupported();
     }

     public void adjustAvrcpAbsoluteVolume(int direction) {
         mAvrcp.adjustVolume(direction);
     }

     public void setAvrcpAbsoluteVolume(int volume) {
         mAvrcp.setAbsoluteVolume(volume);
     }

     public void setAvrcpAudioState(int state) {
         mAvrcp.setA2dpAudioState(state);
     }

     public void resetAvrcpBlacklist(BluetoothDevice device) {
         mAvrcp.resetBlackList(device.getAddress());
     }

     synchronized boolean isA2dpPlaying(BluetoothDevice device) {
         enforceCallingOrSelfPermission(BLUETOOTH_PERM,
                                        "Need BLUETOOTH permission");
         if (DBG) Log.d(TAG, "isA2dpPlaying(" + device + ")");
         return mStateMachine.isPlaying(device);
     }

     //Binder object: Must be static class or memory leak may occur
     private static class BluetoothA2dpBinder extends IBluetoothA2dp.Stub
         implements IProfileServiceBinder {
         private A2dpService mService;

         private A2dpService 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;
         }

         BluetoothA2dpBinder(A2dpService svc) {
             mService = svc;
         }

         public boolean cleanup()  {
             mService = null;
             return true;
         }

         public boolean connect(BluetoothDevice device) {
             A2dpService service = getService();
             if (service == null) return false;
             return service.connect(device);
         }

         public boolean disconnect(BluetoothDevice device) {
             A2dpService service = getService();
             if (service == null) return false;
             return service.disconnect(device);
         }

         public List<BluetoothDevice> getConnectedDevices() {
             A2dpService service = getService();
             if (service == null) return new ArrayList<BluetoothDevice>(0);
             return service.getConnectedDevices();
         }

         public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
             A2dpService service = getService();
             if (service == null) return new ArrayList<BluetoothDevice>(0);
             return service.getDevicesMatchingConnectionStates(states);
         }

         public int getConnectionState(BluetoothDevice device) {
             A2dpService service = getService();
             if (service == null) return BluetoothProfile.STATE_DISCONNECTED;
             return service.getConnectionState(device);
         }

         public boolean setPriority(BluetoothDevice device, int priority) {
             A2dpService service = getService();
             if (service == null) return false;
             return service.setPriority(device, priority);
         }

         public int getPriority(BluetoothDevice device) {
             A2dpService service = getService();
             if (service == null) return BluetoothProfile.PRIORITY_UNDEFINED;
             return service.getPriority(device);
         }

         public boolean isAvrcpAbsoluteVolumeSupported() {
             A2dpService service = getService();
             if (service == null) return false;
             return service.isAvrcpAbsoluteVolumeSupported();
         }

         public void adjustAvrcpAbsoluteVolume(int direction) {
             A2dpService service = getService();
             if (service == null) return;
             service.adjustAvrcpAbsoluteVolume(direction);
         }

         public void setAvrcpAbsoluteVolume(int volume) {
             A2dpService service = getService();
             if (service == null) return;
             service.setAvrcpAbsoluteVolume(volume);
         }

         public boolean isA2dpPlaying(BluetoothDevice device) {
             A2dpService service = getService();
             if (service == null) return false;
             return service.isA2dpPlaying(device);
         }
     };

     @Override
     public void dump(StringBuilder sb) {
         super.dump(sb);
         if (mStateMachine != null) {
             mStateMachine.dump(sb);
         }
         if (mAvrcp != null) {
             mAvrcp.dump(sb);
         }
     }
 }
	/*
	* Copyright (C) 2012 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.BluetoothDevice;
	import android.bluetooth.BluetoothProfile;
	import android.bluetooth.BluetoothUuid;
	import android.bluetooth.IBluetoothA2dp;
	import android.content.Context;
	import android.content.Intent;
	import android.os.ParcelUuid;
	import android.provider.Settings;
	import android.util.Log;
	import com.android.bluetooth.avrcp.Avrcp;
	import com.android.bluetooth.btservice.ProfileService;
	import com.android.bluetooth.Utils;
	import java.util.ArrayList;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Map;

	/**
	* Provides Bluetooth A2DP profile, as a service in the Bluetooth application.
	* @hide
	*/
	public class A2dpService extends ProfileService {
	private static final boolean DBG = false;
	private static final String TAG="A2dpService";

	private A2dpStateMachine mStateMachine;
	private Avrcp mAvrcp;
	private static A2dpService sAd2dpService;
	static final ParcelUuid[] A2DP_SOURCE_UUID = {
	BluetoothUuid.AudioSource
	};
	static final ParcelUuid[] A2DP_SOURCE_SINK_UUIDS = {
	BluetoothUuid.AudioSource,
	BluetoothUuid.AudioSink
	};

	protected String getName() {
	return TAG;
	}

	protected IProfileServiceBinder initBinder() {
	return new BluetoothA2dpBinder(this);
	}

	protected boolean start() {
	mAvrcp = Avrcp.make(this);
	mStateMachine = A2dpStateMachine.make(this, this);
	setA2dpService(this);
	return true;
	}

	protected boolean stop() {
	if (mStateMachine != null) {
	mStateMachine.doQuit();
	}
	if (mAvrcp != null) {
	mAvrcp.doQuit();
	}
	return true;
	}

	protected boolean cleanup() {
	if (mStateMachine!= null) {
	mStateMachine.cleanup();
	}
	if (mAvrcp != null) {
	mAvrcp.cleanup();
	mAvrcp = null;
	}
	clearA2dpService();
	return true;
	}

	//API Methods

	public static synchronized A2dpService getA2dpService(){
	if (sAd2dpService != null && sAd2dpService.isAvailable()) {
	if (DBG) Log.d(TAG, "getA2DPService(): returning " + sAd2dpService);
	return sAd2dpService;
	}
	if (DBG) {
	if (sAd2dpService == null) {
	Log.d(TAG, "getA2dpService(): service is NULL");
	} else if (!(sAd2dpService.isAvailable())) {
	Log.d(TAG,"getA2dpService(): service is not available");
	}
	}
	return null;
	}

	private static synchronized void setA2dpService(A2dpService instance) {
	if (instance != null && instance.isAvailable()) {
	if (DBG) Log.d(TAG, "setA2dpService(): set to: " + sAd2dpService);
	sAd2dpService = instance;
	} else {
	if (DBG) {
	if (sAd2dpService == null) {
	Log.d(TAG, "setA2dpService(): service not available");
	} else if (!sAd2dpService.isAvailable()) {
	Log.d(TAG,"setA2dpService(): service is cleaning up");
	}
	}
	}
	}

	private static synchronized void clearA2dpService() {
	sAd2dpService = null;
	}

	public boolean connect(BluetoothDevice device) {
	enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
	"Need BLUETOOTH ADMIN permission");

	if (getPriority(device) == BluetoothProfile.PRIORITY_OFF) {
	return false;
	}
	ParcelUuid[] featureUuids = device.getUuids();
	if ((BluetoothUuid.containsAnyUuid(featureUuids, A2DP_SOURCE_UUID)) &&
	!(BluetoothUuid.containsAllUuids(featureUuids ,A2DP_SOURCE_SINK_UUIDS))) {
	Log.e(TAG,"Remote does not have A2dp Sink UUID");
	return false;
	}

	int connectionState = mStateMachine.getConnectionState(device);
	if (connectionState == BluetoothProfile.STATE_CONNECTED \|\|
	connectionState == BluetoothProfile.STATE_CONNECTING) {
	return false;
	}

	mStateMachine.sendMessage(A2dpStateMachine.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(A2dpStateMachine.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);
	}

	public boolean setPriority(BluetoothDevice device, int priority) {
	enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
	"Need BLUETOOTH_ADMIN permission");
	Settings.Global.putInt(getContentResolver(),
	Settings.Global.getBluetoothA2dpSinkPriorityKey(device.getAddress()),
	priority);
	if (DBG) Log.d(TAG,"Saved priority " + device + " = " + priority);
	return true;
	}

	public int getPriority(BluetoothDevice device) {
	enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
	"Need BLUETOOTH_ADMIN permission");
	int priority = Settings.Global.getInt(getContentResolver(),
	Settings.Global.getBluetoothA2dpSinkPriorityKey(device.getAddress()),
	BluetoothProfile.PRIORITY_UNDEFINED);
	return priority;
	}

	/* Absolute volume implementation */
	public boolean isAvrcpAbsoluteVolumeSupported() {
	return mAvrcp.isAbsoluteVolumeSupported();
	}

	public void adjustAvrcpAbsoluteVolume(int direction) {
	mAvrcp.adjustVolume(direction);
	}

	public void setAvrcpAbsoluteVolume(int volume) {
	mAvrcp.setAbsoluteVolume(volume);
	}

	public void setAvrcpAudioState(int state) {
	mAvrcp.setA2dpAudioState(state);
	}

	public void resetAvrcpBlacklist(BluetoothDevice device) {
	mAvrcp.resetBlackList(device.getAddress());
	}

	synchronized boolean isA2dpPlaying(BluetoothDevice device) {
	enforceCallingOrSelfPermission(BLUETOOTH_PERM,
	"Need BLUETOOTH permission");
	if (DBG) Log.d(TAG, "isA2dpPlaying(" + device + ")");
	return mStateMachine.isPlaying(device);
	}

	//Binder object: Must be static class or memory leak may occur
	private static class BluetoothA2dpBinder extends IBluetoothA2dp.Stub
	implements IProfileServiceBinder {
	private A2dpService mService;

	private A2dpService 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;
	}

	BluetoothA2dpBinder(A2dpService svc) {
	mService = svc;
	}

	public boolean cleanup() {
	mService = null;
	return true;
	}

	public boolean connect(BluetoothDevice device) {
	A2dpService service = getService();
	if (service == null) return false;
	return service.connect(device);
	}

	public boolean disconnect(BluetoothDevice device) {
	A2dpService service = getService();
	if (service == null) return false;
	return service.disconnect(device);
	}

	public List<BluetoothDevice> getConnectedDevices() {
	A2dpService service = getService();
	if (service == null) return new ArrayList<BluetoothDevice>(0);
	return service.getConnectedDevices();
	}

	public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
	A2dpService service = getService();
	if (service == null) return new ArrayList<BluetoothDevice>(0);
	return service.getDevicesMatchingConnectionStates(states);
	}

	public int getConnectionState(BluetoothDevice device) {
	A2dpService service = getService();
	if (service == null) return BluetoothProfile.STATE_DISCONNECTED;
	return service.getConnectionState(device);
	}

	public boolean setPriority(BluetoothDevice device, int priority) {
	A2dpService service = getService();
	if (service == null) return false;
	return service.setPriority(device, priority);
	}

	public int getPriority(BluetoothDevice device) {
	A2dpService service = getService();
	if (service == null) return BluetoothProfile.PRIORITY_UNDEFINED;
	return service.getPriority(device);
	}

	public boolean isAvrcpAbsoluteVolumeSupported() {
	A2dpService service = getService();
	if (service == null) return false;
	return service.isAvrcpAbsoluteVolumeSupported();
	}

	public void adjustAvrcpAbsoluteVolume(int direction) {
	A2dpService service = getService();
	if (service == null) return;
	service.adjustAvrcpAbsoluteVolume(direction);
	}

	public void setAvrcpAbsoluteVolume(int volume) {
	A2dpService service = getService();
	if (service == null) return;
	service.setAvrcpAbsoluteVolume(volume);
	}

	public boolean isA2dpPlaying(BluetoothDevice device) {
	A2dpService service = getService();
	if (service == null) return false;
	return service.isA2dpPlaying(device);
	}
	};

	@Override
	public void dump(StringBuilder sb) {
	super.dump(sb);
	if (mStateMachine != null) {
	mStateMachine.dump(sb);
	}
	if (mAvrcp != null) {
	mAvrcp.dump(sb);
	}
	}
	}