| /* |
| * Copyright (C) 2011 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.List; |
| |
| |
| /** |
| * This class provides the public APIs to control the Bluetooth Input |
| * Device Profile. |
| * |
| *<p>BluetoothInputDevice is a proxy object for controlling the Bluetooth |
| * Service via IPC. Use {@link BluetoothAdapter#getProfileProxy} to get |
| * the BluetoothInputDevice proxy object. |
| * |
| *<p>Each method is protected with its appropriate permission. |
| *@hide |
| */ |
| public final class BluetoothInputDevice implements BluetoothProfile { |
| private static final String TAG = "BluetoothInputDevice"; |
| private static final boolean DBG = true; |
| private static final boolean VDBG = false; |
| |
| /** |
| * Intent used to broadcast the change in connection state of the Input |
| * Device 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.input.profile.action.CONNECTION_STATE_CHANGED"; |
| |
| /** |
| * @hide |
| */ |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String ACTION_PROTOCOL_MODE_CHANGED = |
| "android.bluetooth.input.profile.action.PROTOCOL_MODE_CHANGED"; |
| |
| /** |
| * @hide |
| */ |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String ACTION_HANDSHAKE = |
| "android.bluetooth.input.profile.action.HANDSHAKE"; |
| |
| /** |
| * @hide |
| */ |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String ACTION_REPORT = |
| "android.bluetooth.input.profile.action.REPORT"; |
| |
| /** |
| * @hide |
| */ |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String ACTION_VIRTUAL_UNPLUG_STATUS = |
| "android.bluetooth.input.profile.action.VIRTUAL_UNPLUG_STATUS"; |
| |
| |
| /** |
| * Return codes for the connect and disconnect Bluez / Dbus calls. |
| * @hide |
| */ |
| public static final int INPUT_DISCONNECT_FAILED_NOT_CONNECTED = 5000; |
| |
| /** |
| * @hide |
| */ |
| public static final int INPUT_CONNECT_FAILED_ALREADY_CONNECTED = 5001; |
| |
| /** |
| * @hide |
| */ |
| public static final int INPUT_CONNECT_FAILED_ATTEMPT_FAILED = 5002; |
| |
| /** |
| * @hide |
| */ |
| public static final int INPUT_OPERATION_GENERIC_FAILURE = 5003; |
| |
| /** |
| * @hide |
| */ |
| public static final int INPUT_OPERATION_SUCCESS = 5004; |
| |
| /** |
| * @hide |
| */ |
| public static final int PROTOCOL_REPORT_MODE = 0; |
| |
| /** |
| * @hide |
| */ |
| public static final int PROTOCOL_BOOT_MODE = 1; |
| |
| /** |
| * @hide |
| */ |
| public static final int PROTOCOL_UNSUPPORTED_MODE = 255; |
| |
| /* int reportType, int reportType, int bufferSize */ |
| /** |
| * @hide |
| */ |
| public static final byte REPORT_TYPE_INPUT = 1; |
| |
| /** |
| * @hide |
| */ |
| public static final byte REPORT_TYPE_OUTPUT = 2; |
| |
| /** |
| * @hide |
| */ |
| public static final byte REPORT_TYPE_FEATURE = 3; |
| |
| /** |
| * @hide |
| */ |
| public static final int VIRTUAL_UNPLUG_STATUS_SUCCESS = 0; |
| |
| /** |
| * @hide |
| */ |
| public static final int VIRTUAL_UNPLUG_STATUS_FAIL = 1; |
| |
| /** |
| * @hide |
| */ |
| public static final String EXTRA_PROTOCOL_MODE = "android.bluetooth.BluetoothInputDevice.extra.PROTOCOL_MODE"; |
| |
| /** |
| * @hide |
| */ |
| public static final String EXTRA_REPORT_TYPE = "android.bluetooth.BluetoothInputDevice.extra.REPORT_TYPE"; |
| |
| /** |
| * @hide |
| */ |
| public static final String EXTRA_REPORT_ID = "android.bluetooth.BluetoothInputDevice.extra.REPORT_ID"; |
| |
| /** |
| * @hide |
| */ |
| public static final String EXTRA_REPORT_BUFFER_SIZE = "android.bluetooth.BluetoothInputDevice.extra.REPORT_BUFFER_SIZE"; |
| |
| /** |
| * @hide |
| */ |
| public static final String EXTRA_REPORT = "android.bluetooth.BluetoothInputDevice.extra.REPORT"; |
| |
| /** |
| * @hide |
| */ |
| public static final String EXTRA_STATUS = "android.bluetooth.BluetoothInputDevice.extra.STATUS"; |
| |
| /** |
| * @hide |
| */ |
| public static final String EXTRA_VIRTUAL_UNPLUG_STATUS = "android.bluetooth.BluetoothInputDevice.extra.VIRTUAL_UNPLUG_STATUS"; |
| |
| private Context mContext; |
| private ServiceListener mServiceListener; |
| private BluetoothAdapter mAdapter; |
| private IBluetoothInputDevice mService; |
| |
| final private IBluetoothStateChangeCallback mBluetoothStateChangeCallback = |
| new IBluetoothStateChangeCallback.Stub() { |
| public void onBluetoothStateChange(boolean up) { |
| if (DBG) Log.d(TAG, "onBluetoothStateChange: up=" + up); |
| if (!up) { |
| if (VDBG) Log.d(TAG,"Unbinding service..."); |
| synchronized (mConnection) { |
| try { |
| mService = null; |
| mContext.unbindService(mConnection); |
| } catch (Exception re) { |
| Log.e(TAG,"",re); |
| } |
| } |
| } else { |
| synchronized (mConnection) { |
| try { |
| if (mService == null) { |
| if (VDBG) Log.d(TAG,"Binding service..."); |
| doBind(); |
| } |
| } catch (Exception re) { |
| Log.e(TAG,"",re); |
| } |
| } |
| } |
| } |
| }; |
| |
| /** |
| * Create a BluetoothInputDevice proxy object for interacting with the local |
| * Bluetooth Service which handles the InputDevice profile |
| * |
| */ |
| /*package*/ BluetoothInputDevice(Context context, ServiceListener l) { |
| mContext = context; |
| mServiceListener = l; |
| mAdapter = BluetoothAdapter.getDefaultAdapter(); |
| |
| IBluetoothManager mgr = mAdapter.getBluetoothManager(); |
| if (mgr != null) { |
| try { |
| mgr.registerStateChangeCallback(mBluetoothStateChangeCallback); |
| } catch (RemoteException e) { |
| Log.e(TAG,"",e); |
| } |
| } |
| |
| doBind(); |
| } |
| |
| boolean doBind() { |
| Intent intent = new Intent(IBluetoothInputDevice.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 Service with " + intent); |
| return false; |
| } |
| return true; |
| } |
| |
| /*package*/ void close() { |
| if (VDBG) log("close()"); |
| IBluetoothManager mgr = mAdapter.getBluetoothManager(); |
| if (mgr != null) { |
| try { |
| mgr.unregisterStateChangeCallback(mBluetoothStateChangeCallback); |
| } catch (Exception e) { |
| Log.e(TAG,"",e); |
| } |
| } |
| |
| synchronized (mConnection) { |
| if (mService != null) { |
| try { |
| mService = null; |
| mContext.unbindService(mConnection); |
| } catch (Exception re) { |
| Log.e(TAG,"",re); |
| } |
| } |
| } |
| mServiceListener = null; |
| } |
| |
| /** |
| * Initiate connection to a profile of the remote bluetooth device. |
| * |
| * <p> The system supports connection to multiple input devices. |
| * |
| * <p> This API returns false in scenarios like the profile on the |
| * device is already connected or Bluetooth is not turned on. |
| * When this API returns true, it is guaranteed that |
| * connection state intent for the profile will be broadcasted with |
| * the state. Users can get the connection state of the profile |
| * from this intent. |
| * |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} |
| * permission. |
| * |
| * @param device Remote Bluetooth Device |
| * @return false on immediate error, |
| * true otherwise |
| * @hide |
| */ |
| public boolean connect(BluetoothDevice device) { |
| if (DBG) log("connect(" + device + ")"); |
| if (mService != null && isEnabled() && isValidDevice(device)) { |
| try { |
| return mService.connect(device); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return false; |
| } |
| } |
| if (mService == null) Log.w(TAG, "Proxy not attached to service"); |
| return false; |
| } |
| |
| /** |
| * Initiate disconnection from a profile |
| * |
| * <p> This API will return false in scenarios like the profile on the |
| * Bluetooth device is not in connected state etc. When this API returns, |
| * true, it is guaranteed that the connection state change |
| * intent will be broadcasted with the state. Users can get the |
| * disconnection state of the profile from this intent. |
| * |
| * <p> If the disconnection is initiated by a remote device, the state |
| * will transition from {@link #STATE_CONNECTED} to |
| * {@link #STATE_DISCONNECTED}. If the disconnect is initiated by the |
| * host (local) device the state will transition from |
| * {@link #STATE_CONNECTED} to state {@link #STATE_DISCONNECTING} to |
| * state {@link #STATE_DISCONNECTED}. The transition to |
| * {@link #STATE_DISCONNECTING} can be used to distinguish between the |
| * two scenarios. |
| * |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} |
| * permission. |
| * |
| * @param device Remote Bluetooth Device |
| * @return false on immediate error, |
| * true otherwise |
| * @hide |
| */ |
| public boolean disconnect(BluetoothDevice device) { |
| if (DBG) log("disconnect(" + device + ")"); |
| if (mService != null && isEnabled() && isValidDevice(device)) { |
| try { |
| return mService.disconnect(device); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return false; |
| } |
| } |
| if (mService == null) Log.w(TAG, "Proxy not attached to service"); |
| return false; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public List<BluetoothDevice> getConnectedDevices() { |
| if (VDBG) log("getConnectedDevices()"); |
| if (mService != null && isEnabled()) { |
| try { |
| return mService.getConnectedDevices(); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return new ArrayList<BluetoothDevice>(); |
| } |
| } |
| if (mService == null) Log.w(TAG, "Proxy not attached to service"); |
| return new ArrayList<BluetoothDevice>(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) { |
| if (VDBG) log("getDevicesMatchingStates()"); |
| if (mService != null && isEnabled()) { |
| try { |
| return mService.getDevicesMatchingConnectionStates(states); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return new ArrayList<BluetoothDevice>(); |
| } |
| } |
| if (mService == null) Log.w(TAG, "Proxy not attached to service"); |
| return new ArrayList<BluetoothDevice>(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public int getConnectionState(BluetoothDevice device) { |
| if (VDBG) log("getState(" + device + ")"); |
| if (mService != null && isEnabled() && isValidDevice(device)) { |
| try { |
| return mService.getConnectionState(device); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return BluetoothProfile.STATE_DISCONNECTED; |
| } |
| } |
| if (mService == null) Log.w(TAG, "Proxy not attached to service"); |
| return BluetoothProfile.STATE_DISCONNECTED; |
| } |
| |
| /** |
| * Set priority of the profile |
| * |
| * <p> The device should already be paired. |
| * Priority can be one of {@link #PRIORITY_ON} or |
| * {@link #PRIORITY_OFF}, |
| * |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} |
| * permission. |
| * |
| * @param device Paired bluetooth device |
| * @param priority |
| * @return true if priority is set, false on error |
| * @hide |
| */ |
| public boolean setPriority(BluetoothDevice device, int priority) { |
| if (DBG) log("setPriority(" + device + ", " + priority + ")"); |
| if (mService != null && isEnabled() && isValidDevice(device)) { |
| if (priority != BluetoothProfile.PRIORITY_OFF && |
| priority != BluetoothProfile.PRIORITY_ON) { |
| return false; |
| } |
| try { |
| return mService.setPriority(device, priority); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return false; |
| } |
| } |
| if (mService == null) Log.w(TAG, "Proxy not attached to service"); |
| return false; |
| } |
| |
| /** |
| * Get the priority of the profile. |
| * |
| * <p> The priority can be any of: |
| * {@link #PRIORITY_AUTO_CONNECT}, {@link #PRIORITY_OFF}, |
| * {@link #PRIORITY_ON}, {@link #PRIORITY_UNDEFINED} |
| * |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| * |
| * @param device Bluetooth device |
| * @return priority of the device |
| * @hide |
| */ |
| public int getPriority(BluetoothDevice device) { |
| if (VDBG) log("getPriority(" + device + ")"); |
| if (mService != null && isEnabled() && isValidDevice(device)) { |
| try { |
| return mService.getPriority(device); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return BluetoothProfile.PRIORITY_OFF; |
| } |
| } |
| if (mService == null) Log.w(TAG, "Proxy not attached to service"); |
| return BluetoothProfile.PRIORITY_OFF; |
| } |
| |
| private final ServiceConnection mConnection = new ServiceConnection() { |
| public void onServiceConnected(ComponentName className, IBinder service) { |
| if (DBG) Log.d(TAG, "Proxy object connected"); |
| mService = IBluetoothInputDevice.Stub.asInterface(service); |
| |
| if (mServiceListener != null) { |
| mServiceListener.onServiceConnected(BluetoothProfile.INPUT_DEVICE, BluetoothInputDevice.this); |
| } |
| } |
| public void onServiceDisconnected(ComponentName className) { |
| if (DBG) Log.d(TAG, "Proxy object disconnected"); |
| mService = null; |
| if (mServiceListener != null) { |
| mServiceListener.onServiceDisconnected(BluetoothProfile.INPUT_DEVICE); |
| } |
| } |
| }; |
| |
| private boolean isEnabled() { |
| if (mAdapter.getState() == BluetoothAdapter.STATE_ON) return true; |
| return false; |
| } |
| |
| private boolean isValidDevice(BluetoothDevice device) { |
| if (device == null) return false; |
| |
| if (BluetoothAdapter.checkBluetoothAddress(device.getAddress())) return true; |
| return false; |
| } |
| |
| |
| /** |
| * Initiate virtual unplug for a HID input device. |
| * |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. |
| * |
| * @param device Remote Bluetooth Device |
| * @return false on immediate error, |
| * true otherwise |
| * @hide |
| */ |
| public boolean virtualUnplug(BluetoothDevice device) { |
| if (DBG) log("virtualUnplug(" + device + ")"); |
| if (mService != null && isEnabled() && isValidDevice(device)) { |
| try { |
| return mService.virtualUnplug(device); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return false; |
| } |
| } |
| |
| if (mService == null) Log.w(TAG, "Proxy not attached to service"); |
| return false; |
| |
| } |
| |
| /** |
| * Send Get_Protocol_Mode command to the connected HID input device. |
| * |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. |
| * |
| * @param device Remote Bluetooth Device |
| * @return false on immediate error, |
| *true otherwise |
| * @hide |
| */ |
| public boolean getProtocolMode(BluetoothDevice device) { |
| if (VDBG) log("getProtocolMode(" + device + ")"); |
| if (mService != null && isEnabled() && isValidDevice(device)) { |
| try { |
| return mService.getProtocolMode(device); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return false; |
| } |
| } |
| if (mService == null) Log.w(TAG, "Proxy not attached to service"); |
| return false; |
| } |
| |
| /** |
| * Send Set_Protocol_Mode command to the connected HID input device. |
| * |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. |
| * |
| * @param device Remote Bluetooth Device |
| * @return false on immediate error, |
| * true otherwise |
| * @hide |
| */ |
| public boolean setProtocolMode(BluetoothDevice device, int protocolMode) { |
| if (DBG) log("setProtocolMode(" + device + ")"); |
| if (mService != null && isEnabled() && isValidDevice(device)) { |
| try { |
| return mService.setProtocolMode(device, protocolMode); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return false; |
| } |
| } |
| if (mService == null) Log.w(TAG, "Proxy not attached to service"); |
| return false; |
| } |
| |
| /** |
| * Send Get_Report command to the connected HID input device. |
| * |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. |
| * |
| * @param device Remote Bluetooth Device |
| * @param reportType Report type |
| * @param reportId Report ID |
| * @param bufferSize Report receiving buffer size |
| * @return false on immediate error, |
| * true otherwise |
| * @hide |
| */ |
| public boolean getReport(BluetoothDevice device, byte reportType, byte reportId, int bufferSize) { |
| if (VDBG) log("getReport(" + device + "), reportType=" + reportType + " reportId=" + reportId + "bufferSize=" + bufferSize); |
| if (mService != null && isEnabled() && isValidDevice(device)) { |
| try { |
| return mService.getReport(device, reportType, reportId, bufferSize); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return false; |
| } |
| } |
| if (mService == null) Log.w(TAG, "Proxy not attached to service"); |
| return false; |
| } |
| |
| /** |
| * Send Set_Report command to the connected HID input device. |
| * |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. |
| * |
| * @param device Remote Bluetooth Device |
| * @param reportType Report type |
| * @param report Report receiving buffer size |
| * @return false on immediate error, |
| * true otherwise |
| * @hide |
| */ |
| public boolean setReport(BluetoothDevice device, byte reportType, String report) { |
| if (VDBG) log("setReport(" + device + "), reportType=" + reportType + " report=" + report); |
| if (mService != null && isEnabled() && isValidDevice(device)) { |
| try { |
| return mService.setReport(device, reportType, report); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return false; |
| } |
| } |
| if (mService == null) Log.w(TAG, "Proxy not attached to service"); |
| return false; |
| } |
| |
| /** |
| * Send Send_Data command to the connected HID input device. |
| * |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. |
| * |
| * @param device Remote Bluetooth Device |
| * @param report Report to send |
| * @return false on immediate error, |
| * true otherwise |
| * @hide |
| */ |
| public boolean sendData(BluetoothDevice device, String report) { |
| if (DBG) log("sendData(" + device + "), report=" + report); |
| if (mService != null && isEnabled() && isValidDevice(device)) { |
| try { |
| return mService.sendData(device, report); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return false; |
| } |
| } |
| if (mService == null) Log.w(TAG, "Proxy not attached to service"); |
| return false; |
| } |
| private static void log(String msg) { |
| Log.d(TAG, msg); |
| } |
| } |
