| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.bluetooth; |
| |
| import android.annotation.RequiresPermission; |
| import android.annotation.SdkConstant; |
| import android.annotation.SdkConstant.SdkConstantType; |
| import android.bluetooth.annotations.RequiresBluetoothConnectPermission; |
| import android.bluetooth.annotations.RequiresLegacyBluetoothPermission; |
| import android.content.AttributionSource; |
| import android.content.Context; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * This class provides the public APIs to control the Bluetooth AVRCP Controller. It currently |
| * supports player information, playback support and track metadata. |
| * |
| * <p>BluetoothAvrcpController is a proxy object for controlling the Bluetooth AVRCP Service via |
| * IPC. Use {@link BluetoothAdapter#getProfileProxy} to get the BluetoothAvrcpController proxy |
| * object. |
| * |
| * @hide |
| */ |
| public final class BluetoothAvrcpController implements BluetoothProfile { |
| private static final String TAG = "BluetoothAvrcpController"; |
| private static final boolean DBG = false; |
| private static final boolean VDBG = false; |
| |
| /** |
| * Intent used to broadcast the change in connection state of the AVRCP Controller profile. |
| * |
| * <p>This intent will have 3 extras: |
| * |
| * <ul> |
| * <li>{@link #EXTRA_STATE} - The current state of the profile. |
| * <li>{@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile. |
| * <li>{@link BluetoothDevice#EXTRA_DEVICE} - The remote device. |
| * </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}. |
| */ |
| @RequiresLegacyBluetoothPermission |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String ACTION_CONNECTION_STATE_CHANGED = |
| "android.bluetooth.avrcp-controller.profile.action.CONNECTION_STATE_CHANGED"; |
| |
| /** |
| * Intent used to broadcast the change in player application setting state on AVRCP AG. |
| * |
| * <p>This intent will have the following extras: |
| * |
| * <ul> |
| * <li>{@link #EXTRA_PLAYER_SETTING} - {@link BluetoothAvrcpPlayerSettings} containing the |
| * most recent player setting. |
| * </ul> |
| */ |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String ACTION_PLAYER_SETTING = |
| "android.bluetooth.avrcp-controller.profile.action.PLAYER_SETTING"; |
| |
| public static final String EXTRA_PLAYER_SETTING = |
| "android.bluetooth.avrcp-controller.profile.extra.PLAYER_SETTING"; |
| |
| private final BluetoothAdapter mAdapter; |
| private final AttributionSource mAttributionSource; |
| |
| private IBluetoothAvrcpController mService; |
| |
| /** |
| * Create a BluetoothAvrcpController proxy object for interacting with the local Bluetooth AVRCP |
| * service. |
| */ |
| /* package */ BluetoothAvrcpController(Context context, BluetoothAdapter adapter) { |
| mAdapter = adapter; |
| mAttributionSource = adapter.getAttributionSource(); |
| mService = null; |
| } |
| |
| /** @hide */ |
| @Override |
| public void onServiceConnected(IBinder service) { |
| mService = IBluetoothAvrcpController.Stub.asInterface(service); |
| } |
| |
| /** @hide */ |
| @Override |
| public void onServiceDisconnected() { |
| mService = null; |
| } |
| |
| private IBluetoothAvrcpController getService() { |
| return mService; |
| } |
| |
| /** @hide */ |
| @Override |
| public BluetoothAdapter getAdapter() { |
| return mAdapter; |
| } |
| |
| @Override |
| @SuppressWarnings("Finalize") // empty finalize for api signature |
| public void finalize() {} |
| |
| /** {@inheritDoc} */ |
| @Override |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) |
| public List<BluetoothDevice> getConnectedDevices() { |
| if (VDBG) log("getConnectedDevices()"); |
| final IBluetoothAvrcpController service = getService(); |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| if (DBG) log(Log.getStackTraceString(new Throwable())); |
| } else if (isEnabled()) { |
| try { |
| return Attributable.setAttributionSource( |
| service.getConnectedDevices(mAttributionSource), mAttributionSource); |
| } catch (RemoteException e) { |
| Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable())); |
| } |
| } |
| return Collections.emptyList(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) |
| public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) { |
| if (VDBG) log("getDevicesMatchingStates()"); |
| final IBluetoothAvrcpController service = getService(); |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| if (DBG) log(Log.getStackTraceString(new Throwable())); |
| } else if (isEnabled()) { |
| try { |
| return Attributable.setAttributionSource( |
| service.getDevicesMatchingConnectionStates(states, mAttributionSource), |
| mAttributionSource); |
| } catch (RemoteException e) { |
| Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable())); |
| } |
| } |
| return Collections.emptyList(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) |
| public int getConnectionState(BluetoothDevice device) { |
| if (VDBG) log("getState(" + device + ")"); |
| final IBluetoothAvrcpController service = getService(); |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| if (DBG) log(Log.getStackTraceString(new Throwable())); |
| } else if (isEnabled() && isValidDevice(device)) { |
| try { |
| return service.getConnectionState(device, mAttributionSource); |
| } catch (RemoteException e) { |
| Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable())); |
| } |
| } |
| return BluetoothProfile.STATE_DISCONNECTED; |
| } |
| |
| /** |
| * Gets the player application settings. |
| * |
| * @return the {@link BluetoothAvrcpPlayerSettings} or {@code null} if there is an error. |
| */ |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) |
| public BluetoothAvrcpPlayerSettings getPlayerSettings(BluetoothDevice device) { |
| if (DBG) Log.d(TAG, "getPlayerSettings"); |
| final IBluetoothAvrcpController service = getService(); |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| if (DBG) log(Log.getStackTraceString(new Throwable())); |
| } else if (isEnabled()) { |
| try { |
| return service.getPlayerSettings(device, mAttributionSource); |
| } catch (RemoteException e) { |
| Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable())); |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Sets the player app setting for current player. returns true in case setting is supported by |
| * remote, false otherwise |
| */ |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) |
| public boolean setPlayerApplicationSetting(BluetoothAvrcpPlayerSettings plAppSetting) { |
| if (DBG) Log.d(TAG, "setPlayerApplicationSetting"); |
| final IBluetoothAvrcpController service = getService(); |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| if (DBG) log(Log.getStackTraceString(new Throwable())); |
| } else if (isEnabled()) { |
| try { |
| service.setPlayerApplicationSetting(plAppSetting, mAttributionSource); |
| } catch (RemoteException e) { |
| Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable())); |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Send Group Navigation Command to Remote. possible keycode values: next_grp, previous_grp |
| * defined above |
| */ |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) |
| public void sendGroupNavigationCmd(BluetoothDevice device, int keyCode, int keyState) { |
| Log.d( |
| TAG, |
| "sendGroupNavigationCmd dev = " |
| + device |
| + " key " |
| + keyCode |
| + " State = " |
| + keyState); |
| final IBluetoothAvrcpController service = getService(); |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| if (DBG) log(Log.getStackTraceString(new Throwable())); |
| } else if (isEnabled()) { |
| try { |
| service.sendGroupNavigationCmd(device, keyCode, keyState, mAttributionSource); |
| } catch (RemoteException e) { |
| Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable())); |
| } |
| } |
| } |
| |
| private boolean isEnabled() { |
| return mAdapter.getState() == BluetoothAdapter.STATE_ON; |
| } |
| |
| private static boolean isValidDevice(BluetoothDevice device) { |
| return device != null && BluetoothAdapter.checkBluetoothAddress(device.getAddress()); |
| } |
| |
| private static void log(String msg) { |
| Log.d(TAG, msg); |
| } |
| } |
