core/java/android/bluetooth/BluetoothInputHost.java - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2016 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 android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.ServiceConnection;
 import android.os.IBinder;
 import android.os.RemoteException;
 import android.util.Log;

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;

 /**
  * @hide
  */
 public final class BluetoothInputHost implements BluetoothProfile {

     private static final String TAG = BluetoothInputHost.class.getSimpleName();

     /**
      * Intent used to broadcast the change in connection state of the Input
      * Host profile.
      *
      * <p>This intent will have 3 extras:
      * <ul>
      * <li> {@link #EXTRA_STATE} - The current state of the profile. </li>
      * <li> {@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile.</li>
      * <li> {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. </li>
      * </ul>
      *
      * <p>{@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} can be any of
      * {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING},
      * {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTING}.
      *
      * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission to
      * receive.
      */
     @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
     public static final String ACTION_CONNECTION_STATE_CHANGED =
             "android.bluetooth.inputhost.profile.action.CONNECTION_STATE_CHANGED";

     /**
      * Constants representing device subclass.
      *
      * @see #registerApp(String, String, String, byte, byte[], BluetoothHidDeviceCallback)
      */
     public static final byte SUBCLASS1_NONE = (byte) 0x00;
     public static final byte SUBCLASS1_KEYBOARD = (byte) 0x40;
     public static final byte SUBCLASS1_MOUSE = (byte) 0x80;
     public static final byte SUBCLASS1_COMBO = (byte) 0xC0;

     public static final byte SUBCLASS2_UNCATEGORIZED = (byte) 0x00;
     public static final byte SUBCLASS2_JOYSTICK = (byte) 0x01;
     public static final byte SUBCLASS2_GAMEPAD = (byte) 0x02;
     public static final byte SUBCLASS2_REMOTE_CONTROL = (byte) 0x03;
     public static final byte SUBCLASS2_SENSING_DEVICE = (byte) 0x04;
     public static final byte SUBCLASS2_DIGITIZER_TABLED = (byte) 0x05;
     public static final byte SUBCLASS2_CARD_READER = (byte) 0x06;

     /**
      * Constants representing report types.
      *
      * @see BluetoothHidDeviceCallback#onGetReport(byte, byte, int)
      * @see BluetoothHidDeviceCallback#onSetReport(byte, byte, byte[])
      * @see BluetoothHidDeviceCallback#onIntrData(byte, byte[])
      */
     public static final byte REPORT_TYPE_INPUT = (byte) 1;
     public static final byte REPORT_TYPE_OUTPUT = (byte) 2;
     public static final byte REPORT_TYPE_FEATURE = (byte) 3;

     /**
      * Constants representing error response for Set Report.
      *
      * @see BluetoothHidDeviceCallback#onSetReport(byte, byte, byte[])
      */
     public static final byte ERROR_RSP_SUCCESS = (byte) 0;
     public static final byte ERROR_RSP_NOT_READY = (byte) 1;
     public static final byte ERROR_RSP_INVALID_RPT_ID = (byte) 2;
     public static final byte ERROR_RSP_UNSUPPORTED_REQ = (byte) 3;
     public static final byte ERROR_RSP_INVALID_PARAM = (byte) 4;
     public static final byte ERROR_RSP_UNKNOWN = (byte) 14;

     /**
      * Constants representing protocol mode used set by host. Default is always
      * {@link #PROTOCOL_REPORT_MODE} unless notified otherwise.
      *
      * @see BluetoothHidDeviceCallback#onSetProtocol(byte)
      */
     public static final byte PROTOCOL_BOOT_MODE = (byte) 0;
     public static final byte PROTOCOL_REPORT_MODE = (byte) 1;

     private Context mContext;

     private ServiceListener mServiceListener;

     private IBluetoothInputHost mService;

     private BluetoothAdapter mAdapter;

     private static class BluetoothHidDeviceCallbackWrapper extends
             IBluetoothHidDeviceCallback.Stub {

         private BluetoothHidDeviceCallback mCallback;

         public BluetoothHidDeviceCallbackWrapper(BluetoothHidDeviceCallback callback) {
             mCallback = callback;
         }

         @Override
         public void onAppStatusChanged(BluetoothDevice pluggedDevice,
                 BluetoothHidDeviceAppConfiguration config, boolean registered) {
             mCallback.onAppStatusChanged(pluggedDevice, config, registered);
         }

         @Override
         public void onConnectionStateChanged(BluetoothDevice device, int state) {
             mCallback.onConnectionStateChanged(device, state);
         }

         @Override
         public void onGetReport(BluetoothDevice device, byte type, byte id, int bufferSize) {
             mCallback.onGetReport(device, type, id, bufferSize);
         }

         @Override
         public void onSetReport(BluetoothDevice device, byte type, byte id, byte[] data) {
             mCallback.onSetReport(device, type, id, data);
         }

         @Override
         public void onSetProtocol(BluetoothDevice device, byte protocol) {
             mCallback.onSetProtocol(device, protocol);
         }

         @Override
         public void onIntrData(BluetoothDevice device, byte reportId, byte[] data) {
             mCallback.onIntrData(device, reportId, data);
         }

         @Override
         public void onVirtualCableUnplug(BluetoothDevice device) {
             mCallback.onVirtualCableUnplug(device);
         }
     }

     private final IBluetoothStateChangeCallback mBluetoothStateChangeCallback =
             new IBluetoothStateChangeCallback.Stub() {

                 public void onBluetoothStateChange(boolean up) {
                     Log.d(TAG, "onBluetoothStateChange: up=" + up);
                     synchronized (mConnection) {
                         if (!up) {
                             Log.d(TAG, "Unbinding service...");
                             if (mService != null) {
                                 mService = null;
                                 try {
                                     mContext.unbindService(mConnection);
                                 } catch (IllegalArgumentException e) {
                                     Log.e(TAG, "onBluetoothStateChange: could not unbind service:",
                                             e);
                                 }
                             }
                         } else {
                             try {
                                 if (mService == null) {
                                     Log.d(TAG, "Binding HID Device service...");
                                     doBind();
                                 }
                             } catch (IllegalStateException e) {
                                 Log.e(TAG,
                                         "onBluetoothStateChange: could not bind to HID Dev "
                                                 + "service: ",
                                         e);
                             } catch (SecurityException e) {
                                 Log.e(TAG,
                                         "onBluetoothStateChange: could not bind to HID Dev "
                                                 + "service: ",
                                         e);
                             }
                         }
                     }
                 }
             };

     private ServiceConnection mConnection = new ServiceConnection() {

         public void onServiceConnected(ComponentName className, IBinder service) {
             Log.d(TAG, "onServiceConnected()");

             mService = IBluetoothInputHost.Stub.asInterface(service);

             if (mServiceListener != null) {
                 mServiceListener.onServiceConnected(BluetoothProfile.INPUT_HOST,
                         BluetoothInputHost.this);
             }
         }

         public void onServiceDisconnected(ComponentName className) {
             Log.d(TAG, "onServiceDisconnected()");

             mService = null;

             if (mServiceListener != null) {
                 mServiceListener.onServiceDisconnected(BluetoothProfile.INPUT_HOST);
             }
         }
     };

     BluetoothInputHost(Context context, ServiceListener listener) {
         Log.v(TAG, "BluetoothInputHost");

         mContext = context;
         mServiceListener = listener;
         mAdapter = BluetoothAdapter.getDefaultAdapter();

         IBluetoothManager mgr = mAdapter.getBluetoothManager();
         if (mgr != null) {
             try {
                 mgr.registerStateChangeCallback(mBluetoothStateChangeCallback);
             } catch (RemoteException e) {
                 e.printStackTrace();
             }
         }

         doBind();
     }

     boolean doBind() {
         Intent intent = new Intent(IBluetoothInputHost.class.getName());
         ComponentName comp = intent.resolveSystemService(mContext.getPackageManager(), 0);
         intent.setComponent(comp);
         if (comp == null || !mContext.bindServiceAsUser(intent, mConnection, 0,
                 android.os.Process.myUserHandle())) {
             Log.e(TAG, "Could not bind to Bluetooth HID Device Service with " + intent);
             return false;
         }
         Log.d(TAG, "Bound to HID Device Service");
         return true;
     }

     void close() {
         Log.v(TAG, "close()");

         IBluetoothManager mgr = mAdapter.getBluetoothManager();
         if (mgr != null) {
             try {
                 mgr.unregisterStateChangeCallback(mBluetoothStateChangeCallback);
             } catch (RemoteException e) {
                 e.printStackTrace();
             }
         }

         synchronized (mConnection) {
             if (mService != null) {
                 mService = null;
                 try {
                     mContext.unbindService(mConnection);
                 } catch (IllegalArgumentException e) {
                     Log.e(TAG, "close: could not unbind HID Dev service: ", e);
                 }
             }
         }

         mServiceListener = null;
     }

     /**
      * {@inheritDoc}
      */
     @Override
     public List<BluetoothDevice> getConnectedDevices() {
         Log.v(TAG, "getConnectedDevices()");

         if (mService != null) {
             try {
                 return mService.getConnectedDevices();
             } catch (RemoteException e) {
                 Log.e(TAG, e.toString());
             }
         } else {
             Log.w(TAG, "Proxy not attached to service");
         }

         return new ArrayList<BluetoothDevice>();
     }

     /**
      * {@inheritDoc}
      */
     @Override
     public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
         Log.v(TAG, "getDevicesMatchingConnectionStates(): states=" + Arrays.toString(states));

         if (mService != null) {
             try {
                 return mService.getDevicesMatchingConnectionStates(states);
             } catch (RemoteException e) {
                 Log.e(TAG, e.toString());
             }
         } else {
             Log.w(TAG, "Proxy not attached to service");
         }

         return new ArrayList<BluetoothDevice>();
     }

     /**
      * {@inheritDoc}
      */
     @Override
     public int getConnectionState(BluetoothDevice device) {
         Log.v(TAG, "getConnectionState(): device=" + device);

         if (mService != null) {
             try {
                 return mService.getConnectionState(device);
             } catch (RemoteException e) {
                 Log.e(TAG, e.toString());
             }
         } else {
             Log.w(TAG, "Proxy not attached to service");
         }

         return STATE_DISCONNECTED;
     }

     /**
      * Registers application to be used for HID device. Connections to HID
      * Device are only possible when application is registered. Only one
      * application can be registered at time. When no longer used, application
      * should be unregistered using
      * {@link #unregisterApp(BluetoothHidDeviceAppConfiguration)}.
      *
      * @param sdp {@link BluetoothHidDeviceAppSdpSettings} object of HID Device SDP record.
      * @param inQos {@link BluetoothHidDeviceAppQosSettings} object of Incoming QoS Settings.
      * @param outQos {@link BluetoothHidDeviceAppQosSettings} object of Outgoing QoS Settings.
      * @param callback {@link BluetoothHidDeviceCallback} object to which callback messages will be
      * sent.
      * @return
      */
     public boolean registerApp(BluetoothHidDeviceAppSdpSettings sdp,
             BluetoothHidDeviceAppQosSettings inQos, BluetoothHidDeviceAppQosSettings outQos,
             BluetoothHidDeviceCallback callback) {
         Log.v(TAG, "registerApp(): sdp=" + sdp + " inQos=" + inQos + " outQos=" + outQos
                 + " callback=" + callback);

         boolean result = false;

         if (sdp == null || callback == null) {
             return false;
         }

         if (mService != null) {
             try {
                 BluetoothHidDeviceAppConfiguration config =
                         new BluetoothHidDeviceAppConfiguration();
                 BluetoothHidDeviceCallbackWrapper cbw =
                         new BluetoothHidDeviceCallbackWrapper(callback);
                 result = mService.registerApp(config, sdp, inQos, outQos, cbw);
             } catch (RemoteException e) {
                 Log.e(TAG, e.toString());
             }
         } else {
             Log.w(TAG, "Proxy not attached to service");
         }

         return result;
     }

     /**
      * Unregisters application. Active connection will be disconnected and no
      * new connections will be allowed until registered again using
      * {@link #registerApp(String, String, String, byte, byte[], BluetoothHidDeviceCallback)}
      *
      * @param config {@link BluetoothHidDeviceAppConfiguration} object as obtained from {@link
      * BluetoothHidDeviceCallback#onAppStatusChanged(BluetoothDevice,
      * BluetoothHidDeviceAppConfiguration,
      * boolean)}
      * @return
      */
     public boolean unregisterApp(BluetoothHidDeviceAppConfiguration config) {
         Log.v(TAG, "unregisterApp()");

         boolean result = false;

         if (mService != null) {
             try {
                 result = mService.unregisterApp(config);
             } catch (RemoteException e) {
                 Log.e(TAG, e.toString());
             }
         } else {
             Log.w(TAG, "Proxy not attached to service");
         }

         return result;
     }

     /**
      * Sends report to remote host using interrupt channel.
      *
      * @param id Report Id, as defined in descriptor. Can be 0 in case Report Id are not defined in
      * descriptor.
      * @param data Report data, not including Report Id.
      * @return
      */
     public boolean sendReport(BluetoothDevice device, int id, byte[] data) {
         boolean result = false;

         if (mService != null) {
             try {
                 result = mService.sendReport(device, id, data);
             } catch (RemoteException e) {
                 Log.e(TAG, e.toString());
             }
         } else {
             Log.w(TAG, "Proxy not attached to service");
         }

         return result;
     }

     /**
      * Sends report to remote host as reply for GET_REPORT request from
      * {@link BluetoothHidDeviceCallback#onGetReport(BluetoothDevice, byte, byte, int)}.
      *
      * @param type Report Type, as in request.
      * @param id Report Id, as in request.
      * @param data Report data, not including Report Id.
      * @return
      */
     public boolean replyReport(BluetoothDevice device, byte type, byte id, byte[] data) {
         Log.v(TAG, "replyReport(): device=" + device + " type=" + type + " id=" + id);

         boolean result = false;

         if (mService != null) {
             try {
                 result = mService.replyReport(device, type, id, data);
             } catch (RemoteException e) {
                 Log.e(TAG, e.toString());
             }
         } else {
             Log.w(TAG, "Proxy not attached to service");
         }

         return result;
     }

     /**
      * Sends error handshake message as reply for invalid SET_REPORT request
      * from {@link BluetoothHidDeviceCallback#onSetReport(BluetoothDevice, byte, byte, byte[])}.
      *
      * @param error Error to be sent for SET_REPORT via HANDSHAKE.
      * @return
      */
     public boolean reportError(BluetoothDevice device, byte error) {
         Log.v(TAG, "reportError(): device=" + device + " error=" + error);

         boolean result = false;

         if (mService != null) {
             try {
                 result = mService.reportError(device, error);
             } catch (RemoteException e) {
                 Log.e(TAG, e.toString());
             }
         } else {
             Log.w(TAG, "Proxy not attached to service");
         }

         return result;
     }

     /**
      * Sends Virtual Cable Unplug to currently connected host.
      *
      * @return
      */
     public boolean unplug(BluetoothDevice device) {
         Log.v(TAG, "unplug(): device=" + device);

         boolean result = false;

         if (mService != null) {
             try {
                 result = mService.unplug(device);
             } catch (RemoteException e) {
                 Log.e(TAG, e.toString());
             }
         } else {
             Log.w(TAG, "Proxy not attached to service");
         }

         return result;
     }

     /**
      * Initiates connection to host which currently has Virtual Cable
      * established with device.
      *
      * @return
      */
     public boolean connect(BluetoothDevice device) {
         Log.v(TAG, "connect(): device=" + device);

         boolean result = false;

         if (mService != null) {
             try {
                 result = mService.connect(device);
             } catch (RemoteException e) {
                 Log.e(TAG, e.toString());
             }
         } else {
             Log.w(TAG, "Proxy not attached to service");
         }

         return result;
     }

     /**
      * Disconnects from currently connected host.
      *
      * @return
      */
     public boolean disconnect(BluetoothDevice device) {
         Log.v(TAG, "disconnect(): device=" + device);

         boolean result = false;

         if (mService != null) {
             try {
                 result = mService.disconnect(device);
             } catch (RemoteException e) {
                 Log.e(TAG, e.toString());
             }
         } else {
             Log.w(TAG, "Proxy not attached to service");
         }

         return result;
     }
 }
	/*
	* Copyright (C) 2016 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 android.annotation.SdkConstant;
	import android.annotation.SdkConstant.SdkConstantType;
	import android.content.ComponentName;
	import android.content.Context;
	import android.content.Intent;
	import android.content.ServiceConnection;
	import android.os.IBinder;
	import android.os.RemoteException;
	import android.util.Log;

	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.List;

	/**
	* @hide
	*/
	public final class BluetoothInputHost implements BluetoothProfile {

	private static final String TAG = BluetoothInputHost.class.getSimpleName();

	/**
	* Intent used to broadcast the change in connection state of the Input
	* Host profile.
	*
	* <p>This intent will have 3 extras:
	* <ul>
	* <li> {@link #EXTRA_STATE} - The current state of the profile. </li>
	* <li> {@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile.</li>
	* <li> {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. </li>
	* </ul>
	*
	* <p>{@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} can be any of
	* {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING},
	* {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTING}.
	*
	* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission to
	* receive.
	*/
	@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
	public static final String ACTION_CONNECTION_STATE_CHANGED =
	"android.bluetooth.inputhost.profile.action.CONNECTION_STATE_CHANGED";

	/**
	* Constants representing device subclass.
	*
	* @see #registerApp(String, String, String, byte, byte[], BluetoothHidDeviceCallback)
	*/
	public static final byte SUBCLASS1_NONE = (byte) 0x00;
	public static final byte SUBCLASS1_KEYBOARD = (byte) 0x40;
	public static final byte SUBCLASS1_MOUSE = (byte) 0x80;
	public static final byte SUBCLASS1_COMBO = (byte) 0xC0;

	public static final byte SUBCLASS2_UNCATEGORIZED = (byte) 0x00;
	public static final byte SUBCLASS2_JOYSTICK = (byte) 0x01;
	public static final byte SUBCLASS2_GAMEPAD = (byte) 0x02;
	public static final byte SUBCLASS2_REMOTE_CONTROL = (byte) 0x03;
	public static final byte SUBCLASS2_SENSING_DEVICE = (byte) 0x04;
	public static final byte SUBCLASS2_DIGITIZER_TABLED = (byte) 0x05;
	public static final byte SUBCLASS2_CARD_READER = (byte) 0x06;

	/**
	* Constants representing report types.
	*
	* @see BluetoothHidDeviceCallback#onGetReport(byte, byte, int)
	* @see BluetoothHidDeviceCallback#onSetReport(byte, byte, byte[])
	* @see BluetoothHidDeviceCallback#onIntrData(byte, byte[])
	*/
	public static final byte REPORT_TYPE_INPUT = (byte) 1;
	public static final byte REPORT_TYPE_OUTPUT = (byte) 2;
	public static final byte REPORT_TYPE_FEATURE = (byte) 3;

	/**
	* Constants representing error response for Set Report.
	*
	* @see BluetoothHidDeviceCallback#onSetReport(byte, byte, byte[])
	*/
	public static final byte ERROR_RSP_SUCCESS = (byte) 0;
	public static final byte ERROR_RSP_NOT_READY = (byte) 1;
	public static final byte ERROR_RSP_INVALID_RPT_ID = (byte) 2;
	public static final byte ERROR_RSP_UNSUPPORTED_REQ = (byte) 3;
	public static final byte ERROR_RSP_INVALID_PARAM = (byte) 4;
	public static final byte ERROR_RSP_UNKNOWN = (byte) 14;

	/**
	* Constants representing protocol mode used set by host. Default is always
	* {@link #PROTOCOL_REPORT_MODE} unless notified otherwise.
	*
	* @see BluetoothHidDeviceCallback#onSetProtocol(byte)
	*/
	public static final byte PROTOCOL_BOOT_MODE = (byte) 0;
	public static final byte PROTOCOL_REPORT_MODE = (byte) 1;

	private Context mContext;

	private ServiceListener mServiceListener;

	private IBluetoothInputHost mService;

	private BluetoothAdapter mAdapter;

	private static class BluetoothHidDeviceCallbackWrapper extends
	IBluetoothHidDeviceCallback.Stub {

	private BluetoothHidDeviceCallback mCallback;

	public BluetoothHidDeviceCallbackWrapper(BluetoothHidDeviceCallback callback) {
	mCallback = callback;
	}

	@Override
	public void onAppStatusChanged(BluetoothDevice pluggedDevice,
	BluetoothHidDeviceAppConfiguration config, boolean registered) {
	mCallback.onAppStatusChanged(pluggedDevice, config, registered);
	}

	@Override
	public void onConnectionStateChanged(BluetoothDevice device, int state) {
	mCallback.onConnectionStateChanged(device, state);
	}

	@Override
	public void onGetReport(BluetoothDevice device, byte type, byte id, int bufferSize) {
	mCallback.onGetReport(device, type, id, bufferSize);
	}

	@Override
	public void onSetReport(BluetoothDevice device, byte type, byte id, byte[] data) {
	mCallback.onSetReport(device, type, id, data);
	}

	@Override
	public void onSetProtocol(BluetoothDevice device, byte protocol) {
	mCallback.onSetProtocol(device, protocol);
	}

	@Override
	public void onIntrData(BluetoothDevice device, byte reportId, byte[] data) {
	mCallback.onIntrData(device, reportId, data);
	}

	@Override
	public void onVirtualCableUnplug(BluetoothDevice device) {
	mCallback.onVirtualCableUnplug(device);
	}
	}

	private final IBluetoothStateChangeCallback mBluetoothStateChangeCallback =
	new IBluetoothStateChangeCallback.Stub() {

	public void onBluetoothStateChange(boolean up) {
	Log.d(TAG, "onBluetoothStateChange: up=" + up);
	synchronized (mConnection) {
	if (!up) {
	Log.d(TAG, "Unbinding service...");
	if (mService != null) {
	mService = null;
	try {
	mContext.unbindService(mConnection);
	} catch (IllegalArgumentException e) {
	Log.e(TAG, "onBluetoothStateChange: could not unbind service:",
	e);
	}
	}
	} else {
	try {
	if (mService == null) {
	Log.d(TAG, "Binding HID Device service...");
	doBind();
	}
	} catch (IllegalStateException e) {
	Log.e(TAG,
	"onBluetoothStateChange: could not bind to HID Dev "
	+ "service: ",
	e);
	} catch (SecurityException e) {
	Log.e(TAG,
	"onBluetoothStateChange: could not bind to HID Dev "
	+ "service: ",
	e);
	}
	}
	}
	}
	};

	private ServiceConnection mConnection = new ServiceConnection() {

	public void onServiceConnected(ComponentName className, IBinder service) {
	Log.d(TAG, "onServiceConnected()");

	mService = IBluetoothInputHost.Stub.asInterface(service);

	if (mServiceListener != null) {
	mServiceListener.onServiceConnected(BluetoothProfile.INPUT_HOST,
	BluetoothInputHost.this);
	}
	}

	public void onServiceDisconnected(ComponentName className) {
	Log.d(TAG, "onServiceDisconnected()");

	mService = null;

	if (mServiceListener != null) {
	mServiceListener.onServiceDisconnected(BluetoothProfile.INPUT_HOST);
	}
	}
	};

	BluetoothInputHost(Context context, ServiceListener listener) {
	Log.v(TAG, "BluetoothInputHost");

	mContext = context;
	mServiceListener = listener;
	mAdapter = BluetoothAdapter.getDefaultAdapter();

	IBluetoothManager mgr = mAdapter.getBluetoothManager();
	if (mgr != null) {
	try {
	mgr.registerStateChangeCallback(mBluetoothStateChangeCallback);
	} catch (RemoteException e) {
	e.printStackTrace();
	}
	}

	doBind();
	}

	boolean doBind() {
	Intent intent = new Intent(IBluetoothInputHost.class.getName());
	ComponentName comp = intent.resolveSystemService(mContext.getPackageManager(), 0);
	intent.setComponent(comp);
	if (comp == null \|\| !mContext.bindServiceAsUser(intent, mConnection, 0,
	android.os.Process.myUserHandle())) {
	Log.e(TAG, "Could not bind to Bluetooth HID Device Service with " + intent);
	return false;
	}
	Log.d(TAG, "Bound to HID Device Service");
	return true;
	}

	void close() {
	Log.v(TAG, "close()");

	IBluetoothManager mgr = mAdapter.getBluetoothManager();
	if (mgr != null) {
	try {
	mgr.unregisterStateChangeCallback(mBluetoothStateChangeCallback);
	} catch (RemoteException e) {
	e.printStackTrace();
	}
	}

	synchronized (mConnection) {
	if (mService != null) {
	mService = null;
	try {
	mContext.unbindService(mConnection);
	} catch (IllegalArgumentException e) {
	Log.e(TAG, "close: could not unbind HID Dev service: ", e);
	}
	}
	}

	mServiceListener = null;
	}

	/**
	* {@inheritDoc}
	*/
	@Override
	public List<BluetoothDevice> getConnectedDevices() {
	Log.v(TAG, "getConnectedDevices()");

	if (mService != null) {
	try {
	return mService.getConnectedDevices();
	} catch (RemoteException e) {
	Log.e(TAG, e.toString());
	}
	} else {
	Log.w(TAG, "Proxy not attached to service");
	}

	return new ArrayList<BluetoothDevice>();
	}

	/**
	* {@inheritDoc}
	*/
	@Override
	public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
	Log.v(TAG, "getDevicesMatchingConnectionStates(): states=" + Arrays.toString(states));

	if (mService != null) {
	try {
	return mService.getDevicesMatchingConnectionStates(states);
	} catch (RemoteException e) {
	Log.e(TAG, e.toString());
	}
	} else {
	Log.w(TAG, "Proxy not attached to service");
	}

	return new ArrayList<BluetoothDevice>();
	}

	/**
	* {@inheritDoc}
	*/
	@Override
	public int getConnectionState(BluetoothDevice device) {
	Log.v(TAG, "getConnectionState(): device=" + device);

	if (mService != null) {
	try {
	return mService.getConnectionState(device);
	} catch (RemoteException e) {
	Log.e(TAG, e.toString());
	}
	} else {
	Log.w(TAG, "Proxy not attached to service");
	}

	return STATE_DISCONNECTED;
	}

	/**
	* Registers application to be used for HID device. Connections to HID
	* Device are only possible when application is registered. Only one
	* application can be registered at time. When no longer used, application
	* should be unregistered using
	* {@link #unregisterApp(BluetoothHidDeviceAppConfiguration)}.
	*
	* @param sdp {@link BluetoothHidDeviceAppSdpSettings} object of HID Device SDP record.
	* @param inQos {@link BluetoothHidDeviceAppQosSettings} object of Incoming QoS Settings.
	* @param outQos {@link BluetoothHidDeviceAppQosSettings} object of Outgoing QoS Settings.
	* @param callback {@link BluetoothHidDeviceCallback} object to which callback messages will be
	* sent.
	* @return
	*/
	public boolean registerApp(BluetoothHidDeviceAppSdpSettings sdp,
	BluetoothHidDeviceAppQosSettings inQos, BluetoothHidDeviceAppQosSettings outQos,
	BluetoothHidDeviceCallback callback) {
	Log.v(TAG, "registerApp(): sdp=" + sdp + " inQos=" + inQos + " outQos=" + outQos
	+ " callback=" + callback);

	boolean result = false;

	if (sdp == null \|\| callback == null) {
	return false;
	}

	if (mService != null) {
	try {
	BluetoothHidDeviceAppConfiguration config =
	new BluetoothHidDeviceAppConfiguration();
	BluetoothHidDeviceCallbackWrapper cbw =
	new BluetoothHidDeviceCallbackWrapper(callback);
	result = mService.registerApp(config, sdp, inQos, outQos, cbw);
	} catch (RemoteException e) {
	Log.e(TAG, e.toString());
	}
	} else {
	Log.w(TAG, "Proxy not attached to service");
	}

	return result;
	}

	/**
	* Unregisters application. Active connection will be disconnected and no
	* new connections will be allowed until registered again using
	* {@link #registerApp(String, String, String, byte, byte[], BluetoothHidDeviceCallback)}
	*
	* @param config {@link BluetoothHidDeviceAppConfiguration} object as obtained from {@link
	* BluetoothHidDeviceCallback#onAppStatusChanged(BluetoothDevice,
	* BluetoothHidDeviceAppConfiguration,
	* boolean)}
	* @return
	*/
	public boolean unregisterApp(BluetoothHidDeviceAppConfiguration config) {
	Log.v(TAG, "unregisterApp()");

	boolean result = false;

	if (mService != null) {
	try {
	result = mService.unregisterApp(config);
	} catch (RemoteException e) {
	Log.e(TAG, e.toString());
	}
	} else {
	Log.w(TAG, "Proxy not attached to service");
	}

	return result;
	}

	/**
	* Sends report to remote host using interrupt channel.
	*
	* @param id Report Id, as defined in descriptor. Can be 0 in case Report Id are not defined in
	* descriptor.
	* @param data Report data, not including Report Id.
	* @return
	*/
	public boolean sendReport(BluetoothDevice device, int id, byte[] data) {
	boolean result = false;

	if (mService != null) {
	try {
	result = mService.sendReport(device, id, data);
	} catch (RemoteException e) {
	Log.e(TAG, e.toString());
	}
	} else {
	Log.w(TAG, "Proxy not attached to service");
	}

	return result;
	}

	/**
	* Sends report to remote host as reply for GET_REPORT request from
	* {@link BluetoothHidDeviceCallback#onGetReport(BluetoothDevice, byte, byte, int)}.
	*
	* @param type Report Type, as in request.
	* @param id Report Id, as in request.
	* @param data Report data, not including Report Id.
	* @return
	*/
	public boolean replyReport(BluetoothDevice device, byte type, byte id, byte[] data) {
	Log.v(TAG, "replyReport(): device=" + device + " type=" + type + " id=" + id);

	boolean result = false;

	if (mService != null) {
	try {
	result = mService.replyReport(device, type, id, data);
	} catch (RemoteException e) {
	Log.e(TAG, e.toString());
	}
	} else {
	Log.w(TAG, "Proxy not attached to service");
	}

	return result;
	}

	/**
	* Sends error handshake message as reply for invalid SET_REPORT request
	* from {@link BluetoothHidDeviceCallback#onSetReport(BluetoothDevice, byte, byte, byte[])}.
	*
	* @param error Error to be sent for SET_REPORT via HANDSHAKE.
	* @return
	*/
	public boolean reportError(BluetoothDevice device, byte error) {
	Log.v(TAG, "reportError(): device=" + device + " error=" + error);

	boolean result = false;

	if (mService != null) {
	try {
	result = mService.reportError(device, error);
	} catch (RemoteException e) {
	Log.e(TAG, e.toString());
	}
	} else {
	Log.w(TAG, "Proxy not attached to service");
	}

	return result;
	}

	/**
	* Sends Virtual Cable Unplug to currently connected host.
	*
	* @return
	*/
	public boolean unplug(BluetoothDevice device) {
	Log.v(TAG, "unplug(): device=" + device);

	boolean result = false;

	if (mService != null) {
	try {
	result = mService.unplug(device);
	} catch (RemoteException e) {
	Log.e(TAG, e.toString());
	}
	} else {
	Log.w(TAG, "Proxy not attached to service");
	}

	return result;
	}

	/**
	* Initiates connection to host which currently has Virtual Cable
	* established with device.
	*
	* @return
	*/
	public boolean connect(BluetoothDevice device) {
	Log.v(TAG, "connect(): device=" + device);

	boolean result = false;

	if (mService != null) {
	try {
	result = mService.connect(device);
	} catch (RemoteException e) {
	Log.e(TAG, e.toString());
	}
	} else {
	Log.w(TAG, "Proxy not attached to service");
	}

	return result;
	}

	/**
	* Disconnects from currently connected host.
	*
	* @return
	*/
	public boolean disconnect(BluetoothDevice device) {
	Log.v(TAG, "disconnect(): device=" + device);

	boolean result = false;

	if (mService != null) {
	try {
	result = mService.disconnect(device);
	} catch (RemoteException e) {
	Log.e(TAG, e.toString());
	}
	} else {
	Log.w(TAG, "Proxy not attached to service");
	}

	return result;
	}
	}