src/com/android/bluetooth/btservice/SilenceDeviceManager.java - platform/packages/apps/Bluetooth - Git at Google

 /*
  * Copyright 2019 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.btservice;

 import android.bluetooth.BluetoothA2dp;
 import android.bluetooth.BluetoothDevice;
 import android.bluetooth.BluetoothHeadset;
 import android.bluetooth.BluetoothProfile;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
 import android.os.UserHandle;
 import android.util.Log;

 import com.android.bluetooth.a2dp.A2dpService;
 import com.android.bluetooth.hfp.HeadsetService;
 import com.android.internal.annotations.VisibleForTesting;

 import java.io.FileDescriptor;
 import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;

 /**
  * The silence device manager controls silence mode for A2DP, HFP, and AVRCP.
  *
  * 1) If an active device (for A2DP or HFP) enters silence mode, the active device
  *    for that profile will be set to null.
  * 2) If a device exits silence mode while the A2DP or HFP active device is null,
  *    the device will be set as the active device for that profile.
  * 3) If a device is disconnected, it exits silence mode.
  * 4) If a device is set as the active device for A2DP or HFP, while silence mode
  *    is enabled, then the device will exit silence mode.
  * 5) If a device is in silence mode, AVRCP position change event and HFP AG indicators
  *    will be disabled.
  * 6) If a device is not connected with A2DP or HFP, it cannot enter silence mode.
  */
 public class SilenceDeviceManager {
     private static final boolean DBG = true;
     private static final boolean VERBOSE = false;
     private static final String TAG = "SilenceDeviceManager";

     private final AdapterService mAdapterService;
     private final ServiceFactory mFactory;
     private Handler mHandler = null;
     private Looper mLooper = null;

     private final Map<BluetoothDevice, Boolean> mSilenceDevices = new HashMap<>();
     private final List<BluetoothDevice> mA2dpConnectedDevices = new ArrayList<>();
     private final List<BluetoothDevice> mHfpConnectedDevices = new ArrayList<>();

     private static final int MSG_SILENCE_DEVICE_STATE_CHANGED = 1;
     private static final int MSG_A2DP_CONNECTION_STATE_CHANGED = 10;
     private static final int MSG_HFP_CONNECTION_STATE_CHANGED = 11;
     private static final int MSG_A2DP_ACTIVE_DEIVCE_CHANGED = 20;
     private static final int MSG_HFP_ACTIVE_DEVICE_CHANGED = 21;
     private static final int ENABLE_SILENCE = 0;
     private static final int DISABLE_SILENCE = 1;

     // Broadcast receiver for all changes
     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             String action = intent.getAction();
             if (action == null) {
                 Log.e(TAG, "Received intent with null action");
                 return;
             }
             switch (action) {
                 case BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED:
                     mHandler.obtainMessage(MSG_A2DP_CONNECTION_STATE_CHANGED,
                                            intent).sendToTarget();
                     break;
                 case BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED:
                     mHandler.obtainMessage(MSG_HFP_CONNECTION_STATE_CHANGED,
                                            intent).sendToTarget();
                     break;
                 case BluetoothA2dp.ACTION_ACTIVE_DEVICE_CHANGED:
                     mHandler.obtainMessage(MSG_A2DP_ACTIVE_DEIVCE_CHANGED,
                                            intent).sendToTarget();
                     break;
                 case BluetoothHeadset.ACTION_ACTIVE_DEVICE_CHANGED:
                     mHandler.obtainMessage(MSG_HFP_ACTIVE_DEVICE_CHANGED,
                         intent).sendToTarget();
                     break;
                 default:
                     Log.e(TAG, "Received unexpected intent, action=" + action);
                     break;
             }
         }
     };

     class SilenceDeviceManagerHandler extends Handler {
         SilenceDeviceManagerHandler(Looper looper) {
             super(looper);
         }

         @Override
         public void handleMessage(Message msg) {
             if (VERBOSE) {
                 Log.d(TAG, "handleMessage: " + msg.what);
             }
             switch (msg.what) {
                 case MSG_SILENCE_DEVICE_STATE_CHANGED: {
                     BluetoothDevice device = (BluetoothDevice) msg.obj;
                     boolean state = (msg.arg1 == ENABLE_SILENCE);
                     handleSilenceDeviceStateChanged(device, state);
                 }
                 break;

                 case MSG_A2DP_CONNECTION_STATE_CHANGED: {
                     Intent intent = (Intent) msg.obj;
                     BluetoothDevice device =
                             intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                     int prevState = intent.getIntExtra(BluetoothProfile.EXTRA_PREVIOUS_STATE, -1);
                     int nextState = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, -1);

                     if (nextState == BluetoothProfile.STATE_CONNECTED) {
                         // enter connected state
                         addConnectedDevice(device, BluetoothProfile.A2DP);
                         if (!mSilenceDevices.containsKey(device)) {
                             mSilenceDevices.put(device, false);
                         }
                     } else if (prevState == BluetoothProfile.STATE_CONNECTED) {
                         // exiting from connected state
                         removeConnectedDevice(device, BluetoothProfile.A2DP);
                         if (!isBluetoothAudioConnected(device)) {
                             handleSilenceDeviceStateChanged(device, false);
                             mSilenceDevices.remove(device);
                         }
                     }
                 }
                 break;

                 case MSG_HFP_CONNECTION_STATE_CHANGED: {
                     Intent intent = (Intent) msg.obj;
                     BluetoothDevice device =
                             intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                     int prevState = intent.getIntExtra(BluetoothProfile.EXTRA_PREVIOUS_STATE, -1);
                     int nextState = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, -1);

                     if (nextState == BluetoothProfile.STATE_CONNECTED) {
                         // enter connected state
                         addConnectedDevice(device, BluetoothProfile.HEADSET);
                         if (!mSilenceDevices.containsKey(device)) {
                             mSilenceDevices.put(device, false);
                         }
                     } else if (prevState == BluetoothProfile.STATE_CONNECTED) {
                         // exiting from connected state
                         removeConnectedDevice(device, BluetoothProfile.HEADSET);
                         if (!isBluetoothAudioConnected(device)) {
                             handleSilenceDeviceStateChanged(device, false);
                             mSilenceDevices.remove(device);
                         }
                     }
                 }
                 break;

                 case MSG_A2DP_ACTIVE_DEIVCE_CHANGED: {
                     Intent intent = (Intent) msg.obj;
                     BluetoothDevice a2dpActiveDevice =
                             intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                     if (getSilenceMode(a2dpActiveDevice)) {
                         // Resume the device from silence mode.
                         setSilenceMode(a2dpActiveDevice, false);
                     }
                 }
                 break;

                 case MSG_HFP_ACTIVE_DEVICE_CHANGED: {
                     Intent intent = (Intent) msg.obj;
                     BluetoothDevice hfpActiveDevice =
                             intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                     if (getSilenceMode(hfpActiveDevice)) {
                         // Resume the device from silence mode.
                         setSilenceMode(hfpActiveDevice, false);
                     }
                 }
                 break;

                 default: {
                     Log.e(TAG, "Unknown message: " + msg.what);
                 }
                 break;
             }
         }
     };

     SilenceDeviceManager(AdapterService service, ServiceFactory factory, Looper looper) {
         mAdapterService = service;
         mFactory = factory;
         mLooper = looper;
     }

     void start() {
         if (VERBOSE) {
             Log.v(TAG, "start()");
         }
         mHandler = new SilenceDeviceManagerHandler(mLooper);
         IntentFilter filter = new IntentFilter();
         filter.addAction(BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED);
         filter.addAction(BluetoothA2dp.ACTION_ACTIVE_DEVICE_CHANGED);
         filter.addAction(BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED);
         filter.addAction(BluetoothHeadset.ACTION_ACTIVE_DEVICE_CHANGED);
         mAdapterService.registerReceiver(mReceiver, filter);
     }

     void cleanup() {
         if (VERBOSE) {
             Log.v(TAG, "cleanup()");
         }
         mSilenceDevices.clear();
         mAdapterService.unregisterReceiver(mReceiver);
     }

     @VisibleForTesting
     boolean setSilenceMode(BluetoothDevice device, boolean silence) {
         if (mHandler == null) {
             Log.e(TAG, "setSilenceMode() mHandler is null!");
             return false;
         }
         Log.d(TAG, "setSilenceMode: " + device.getAddress() + ", " + silence);
         Message message = mHandler.obtainMessage(MSG_SILENCE_DEVICE_STATE_CHANGED,
                 silence ? ENABLE_SILENCE : DISABLE_SILENCE, 0, device);
         mHandler.sendMessage(message);
         return true;
     }

     void handleSilenceDeviceStateChanged(BluetoothDevice device, boolean state) {
         boolean oldState = getSilenceMode(device);
         if (oldState == state) {
             return;
         }
         if (!isBluetoothAudioConnected(device)) {
             if (oldState) {
                 // Device is disconnected, resume all silenced profiles.
                 state = false;
             } else {
                 Log.d(TAG, "Deivce is not connected to any Bluetooth audio.");
                 return;
             }
         }
         mSilenceDevices.replace(device, state);

         A2dpService a2dpService = mFactory.getA2dpService();
         if (a2dpService != null) {
             a2dpService.setSilenceMode(device, state);
         }
         HeadsetService headsetService = mFactory.getHeadsetService();
         if (headsetService != null) {
             headsetService.setSilenceMode(device, state);
         }
         Log.i(TAG, "Silence mode change " + device.getAddress() + ": " + oldState + " -> "
                 + state);
         broadcastSilenceStateChange(device, state);
     }

     void broadcastSilenceStateChange(BluetoothDevice device, boolean state) {
         Intent intent = new Intent(BluetoothDevice.ACTION_SILENCE_MODE_CHANGED);
         intent.putExtra(BluetoothDevice.EXTRA_DEVICE, device);
         mAdapterService.sendBroadcastAsUser(intent, UserHandle.ALL, AdapterService.BLUETOOTH_PERM);

     }

     @VisibleForTesting
     boolean getSilenceMode(BluetoothDevice device) {
         boolean state = false;
         if (mSilenceDevices.containsKey(device)) {
             state = mSilenceDevices.get(device);
         }
         return state;
     }

     void addConnectedDevice(BluetoothDevice device, int profile) {
         if (VERBOSE) {
             Log.d(TAG, "addConnectedDevice: " + device.getAddress() + ", profile:" + profile);
         }
         switch (profile) {
             case BluetoothProfile.A2DP:
                 if (!mA2dpConnectedDevices.contains(device)) {
                     mA2dpConnectedDevices.add(device);
                 }
                 break;
             case BluetoothProfile.HEADSET:
                 if (!mHfpConnectedDevices.contains(device)) {
                     mHfpConnectedDevices.add(device);
                 }
                 break;
         }
     }

     void removeConnectedDevice(BluetoothDevice device, int profile) {
         if (VERBOSE) {
             Log.d(TAG, "removeConnectedDevice: " + device.getAddress() + ", profile:" + profile);
         }
         switch (profile) {
             case BluetoothProfile.A2DP:
                 if (mA2dpConnectedDevices.contains(device)) {
                     mA2dpConnectedDevices.remove(device);
                 }
                 break;
             case BluetoothProfile.HEADSET:
                 if (mHfpConnectedDevices.contains(device)) {
                     mHfpConnectedDevices.remove(device);
                 }
                 break;
         }
     }

     boolean isBluetoothAudioConnected(BluetoothDevice device) {
         return (mA2dpConnectedDevices.contains(device) || mHfpConnectedDevices.contains(device));
     }

     protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
         writer.println("\nSilenceDeviceManager:");
         writer.println("  Address            | Is silenced?");
         for (BluetoothDevice device : mSilenceDevices.keySet()) {
             writer.println("  " + device.getAddress() + "  | " + getSilenceMode(device));
         }
     }

     @VisibleForTesting
     BroadcastReceiver getBroadcastReceiver() {
         return mReceiver;
     }
 }
	/*
	* Copyright 2019 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.btservice;

	import android.bluetooth.BluetoothA2dp;
	import android.bluetooth.BluetoothDevice;
	import android.bluetooth.BluetoothHeadset;
	import android.bluetooth.BluetoothProfile;
	import android.content.BroadcastReceiver;
	import android.content.Context;
	import android.content.Intent;
	import android.content.IntentFilter;
	import android.os.Handler;
	import android.os.Looper;
	import android.os.Message;
	import android.os.UserHandle;
	import android.util.Log;

	import com.android.bluetooth.a2dp.A2dpService;
	import com.android.bluetooth.hfp.HeadsetService;
	import com.android.internal.annotations.VisibleForTesting;

	import java.io.FileDescriptor;
	import java.io.PrintWriter;
	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;

	/**
	* The silence device manager controls silence mode for A2DP, HFP, and AVRCP.
	*
	* 1) If an active device (for A2DP or HFP) enters silence mode, the active device
	* for that profile will be set to null.
	* 2) If a device exits silence mode while the A2DP or HFP active device is null,
	* the device will be set as the active device for that profile.
	* 3) If a device is disconnected, it exits silence mode.
	* 4) If a device is set as the active device for A2DP or HFP, while silence mode
	* is enabled, then the device will exit silence mode.
	* 5) If a device is in silence mode, AVRCP position change event and HFP AG indicators
	* will be disabled.
	* 6) If a device is not connected with A2DP or HFP, it cannot enter silence mode.
	*/
	public class SilenceDeviceManager {
	private static final boolean DBG = true;
	private static final boolean VERBOSE = false;
	private static final String TAG = "SilenceDeviceManager";

	private final AdapterService mAdapterService;
	private final ServiceFactory mFactory;
	private Handler mHandler = null;
	private Looper mLooper = null;

	private final Map<BluetoothDevice, Boolean> mSilenceDevices = new HashMap<>();
	private final List<BluetoothDevice> mA2dpConnectedDevices = new ArrayList<>();
	private final List<BluetoothDevice> mHfpConnectedDevices = new ArrayList<>();

	private static final int MSG_SILENCE_DEVICE_STATE_CHANGED = 1;
	private static final int MSG_A2DP_CONNECTION_STATE_CHANGED = 10;
	private static final int MSG_HFP_CONNECTION_STATE_CHANGED = 11;
	private static final int MSG_A2DP_ACTIVE_DEIVCE_CHANGED = 20;
	private static final int MSG_HFP_ACTIVE_DEVICE_CHANGED = 21;
	private static final int ENABLE_SILENCE = 0;
	private static final int DISABLE_SILENCE = 1;

	// Broadcast receiver for all changes
	private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	String action = intent.getAction();
	if (action == null) {
	Log.e(TAG, "Received intent with null action");
	return;
	}
	switch (action) {
	case BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED:
	mHandler.obtainMessage(MSG_A2DP_CONNECTION_STATE_CHANGED,
	intent).sendToTarget();
	break;
	case BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED:
	mHandler.obtainMessage(MSG_HFP_CONNECTION_STATE_CHANGED,
	intent).sendToTarget();
	break;
	case BluetoothA2dp.ACTION_ACTIVE_DEVICE_CHANGED:
	mHandler.obtainMessage(MSG_A2DP_ACTIVE_DEIVCE_CHANGED,
	intent).sendToTarget();
	break;
	case BluetoothHeadset.ACTION_ACTIVE_DEVICE_CHANGED:
	mHandler.obtainMessage(MSG_HFP_ACTIVE_DEVICE_CHANGED,
	intent).sendToTarget();
	break;
	default:
	Log.e(TAG, "Received unexpected intent, action=" + action);
	break;
	}
	}
	};

	class SilenceDeviceManagerHandler extends Handler {
	SilenceDeviceManagerHandler(Looper looper) {
	super(looper);
	}

	@Override
	public void handleMessage(Message msg) {
	if (VERBOSE) {
	Log.d(TAG, "handleMessage: " + msg.what);
	}
	switch (msg.what) {
	case MSG_SILENCE_DEVICE_STATE_CHANGED: {
	BluetoothDevice device = (BluetoothDevice) msg.obj;
	boolean state = (msg.arg1 == ENABLE_SILENCE);
	handleSilenceDeviceStateChanged(device, state);
	}
	break;

	case MSG_A2DP_CONNECTION_STATE_CHANGED: {
	Intent intent = (Intent) msg.obj;
	BluetoothDevice device =
	intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
	int prevState = intent.getIntExtra(BluetoothProfile.EXTRA_PREVIOUS_STATE, -1);
	int nextState = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, -1);

	if (nextState == BluetoothProfile.STATE_CONNECTED) {
	// enter connected state
	addConnectedDevice(device, BluetoothProfile.A2DP);
	if (!mSilenceDevices.containsKey(device)) {
	mSilenceDevices.put(device, false);
	}
	} else if (prevState == BluetoothProfile.STATE_CONNECTED) {
	// exiting from connected state
	removeConnectedDevice(device, BluetoothProfile.A2DP);
	if (!isBluetoothAudioConnected(device)) {
	handleSilenceDeviceStateChanged(device, false);
	mSilenceDevices.remove(device);
	}
	}
	}
	break;

	case MSG_HFP_CONNECTION_STATE_CHANGED: {
	Intent intent = (Intent) msg.obj;
	BluetoothDevice device =
	intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
	int prevState = intent.getIntExtra(BluetoothProfile.EXTRA_PREVIOUS_STATE, -1);
	int nextState = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, -1);

	if (nextState == BluetoothProfile.STATE_CONNECTED) {
	// enter connected state
	addConnectedDevice(device, BluetoothProfile.HEADSET);
	if (!mSilenceDevices.containsKey(device)) {
	mSilenceDevices.put(device, false);
	}
	} else if (prevState == BluetoothProfile.STATE_CONNECTED) {
	// exiting from connected state
	removeConnectedDevice(device, BluetoothProfile.HEADSET);
	if (!isBluetoothAudioConnected(device)) {
	handleSilenceDeviceStateChanged(device, false);
	mSilenceDevices.remove(device);
	}
	}
	}
	break;

	case MSG_A2DP_ACTIVE_DEIVCE_CHANGED: {
	Intent intent = (Intent) msg.obj;
	BluetoothDevice a2dpActiveDevice =
	intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
	if (getSilenceMode(a2dpActiveDevice)) {
	// Resume the device from silence mode.
	setSilenceMode(a2dpActiveDevice, false);
	}
	}
	break;

	case MSG_HFP_ACTIVE_DEVICE_CHANGED: {
	Intent intent = (Intent) msg.obj;
	BluetoothDevice hfpActiveDevice =
	intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
	if (getSilenceMode(hfpActiveDevice)) {
	// Resume the device from silence mode.
	setSilenceMode(hfpActiveDevice, false);
	}
	}
	break;

	default: {
	Log.e(TAG, "Unknown message: " + msg.what);
	}
	break;
	}
	}
	};

	SilenceDeviceManager(AdapterService service, ServiceFactory factory, Looper looper) {
	mAdapterService = service;
	mFactory = factory;
	mLooper = looper;
	}

	void start() {
	if (VERBOSE) {
	Log.v(TAG, "start()");
	}
	mHandler = new SilenceDeviceManagerHandler(mLooper);
	IntentFilter filter = new IntentFilter();
	filter.addAction(BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED);
	filter.addAction(BluetoothA2dp.ACTION_ACTIVE_DEVICE_CHANGED);
	filter.addAction(BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED);
	filter.addAction(BluetoothHeadset.ACTION_ACTIVE_DEVICE_CHANGED);
	mAdapterService.registerReceiver(mReceiver, filter);
	}

	void cleanup() {
	if (VERBOSE) {
	Log.v(TAG, "cleanup()");
	}
	mSilenceDevices.clear();
	mAdapterService.unregisterReceiver(mReceiver);
	}

	@VisibleForTesting
	boolean setSilenceMode(BluetoothDevice device, boolean silence) {
	if (mHandler == null) {
	Log.e(TAG, "setSilenceMode() mHandler is null!");
	return false;
	}
	Log.d(TAG, "setSilenceMode: " + device.getAddress() + ", " + silence);
	Message message = mHandler.obtainMessage(MSG_SILENCE_DEVICE_STATE_CHANGED,
	silence ? ENABLE_SILENCE : DISABLE_SILENCE, 0, device);
	mHandler.sendMessage(message);
	return true;
	}

	void handleSilenceDeviceStateChanged(BluetoothDevice device, boolean state) {
	boolean oldState = getSilenceMode(device);
	if (oldState == state) {
	return;
	}
	if (!isBluetoothAudioConnected(device)) {
	if (oldState) {
	// Device is disconnected, resume all silenced profiles.
	state = false;
	} else {
	Log.d(TAG, "Deivce is not connected to any Bluetooth audio.");
	return;
	}
	}
	mSilenceDevices.replace(device, state);

	A2dpService a2dpService = mFactory.getA2dpService();
	if (a2dpService != null) {
	a2dpService.setSilenceMode(device, state);
	}
	HeadsetService headsetService = mFactory.getHeadsetService();
	if (headsetService != null) {
	headsetService.setSilenceMode(device, state);
	}
	Log.i(TAG, "Silence mode change " + device.getAddress() + ": " + oldState + " -> "
	+ state);
	broadcastSilenceStateChange(device, state);
	}

	void broadcastSilenceStateChange(BluetoothDevice device, boolean state) {
	Intent intent = new Intent(BluetoothDevice.ACTION_SILENCE_MODE_CHANGED);
	intent.putExtra(BluetoothDevice.EXTRA_DEVICE, device);
	mAdapterService.sendBroadcastAsUser(intent, UserHandle.ALL, AdapterService.BLUETOOTH_PERM);

	}

	@VisibleForTesting
	boolean getSilenceMode(BluetoothDevice device) {
	boolean state = false;
	if (mSilenceDevices.containsKey(device)) {
	state = mSilenceDevices.get(device);
	}
	return state;
	}

	void addConnectedDevice(BluetoothDevice device, int profile) {
	if (VERBOSE) {
	Log.d(TAG, "addConnectedDevice: " + device.getAddress() + ", profile:" + profile);
	}
	switch (profile) {
	case BluetoothProfile.A2DP:
	if (!mA2dpConnectedDevices.contains(device)) {
	mA2dpConnectedDevices.add(device);
	}
	break;
	case BluetoothProfile.HEADSET:
	if (!mHfpConnectedDevices.contains(device)) {
	mHfpConnectedDevices.add(device);
	}
	break;
	}
	}

	void removeConnectedDevice(BluetoothDevice device, int profile) {
	if (VERBOSE) {
	Log.d(TAG, "removeConnectedDevice: " + device.getAddress() + ", profile:" + profile);
	}
	switch (profile) {
	case BluetoothProfile.A2DP:
	if (mA2dpConnectedDevices.contains(device)) {
	mA2dpConnectedDevices.remove(device);
	}
	break;
	case BluetoothProfile.HEADSET:
	if (mHfpConnectedDevices.contains(device)) {
	mHfpConnectedDevices.remove(device);
	}
	break;
	}
	}

	boolean isBluetoothAudioConnected(BluetoothDevice device) {
	return (mA2dpConnectedDevices.contains(device) \|\| mHfpConnectedDevices.contains(device));
	}

	protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
	writer.println("\nSilenceDeviceManager:");
	writer.println(" Address \| Is silenced?");
	for (BluetoothDevice device : mSilenceDevices.keySet()) {
	writer.println(" " + device.getAddress() + " \| " + getSilenceMode(device));
	}
	}

	@VisibleForTesting
	BroadcastReceiver getBroadcastReceiver() {
	return mReceiver;
	}
	}