1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.telecom; 18 19 import android.content.Context; 20 import android.os.PowerManager; 21 import android.telecom.CallState; 22 23 /** 24 * Handles acquisition and release of wake locks relating to call state. 25 */ 26 class InCallWakeLockController extends CallsManagerListenerBase { 27 28 private static final String TAG = "InCallWakeLockContoller"; 29 30 private final Context mContext; 31 private final PowerManager.WakeLock mFullWakeLock; 32 private final CallsManager mCallsManager; 33 InCallWakeLockController(Context context, CallsManager callsManager)34 InCallWakeLockController(Context context, CallsManager callsManager) { 35 mContext = context; 36 mCallsManager = callsManager; 37 38 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 39 mFullWakeLock = powerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK, TAG); 40 41 callsManager.addListener(this); 42 } 43 44 @Override onCallAdded(Call call)45 public void onCallAdded(Call call) { 46 handleWakeLock(); 47 } 48 49 @Override onCallRemoved(Call call)50 public void onCallRemoved(Call call) { 51 handleWakeLock(); 52 } 53 54 @Override onCallStateChanged(Call call, int oldState, int newState)55 public void onCallStateChanged(Call call, int oldState, int newState) { 56 handleWakeLock(); 57 } 58 handleWakeLock()59 private void handleWakeLock() { 60 // We grab a full lock as long as there exists a ringing call. 61 Call ringingCall = mCallsManager.getRingingCall(); 62 if (ringingCall != null) { 63 mFullWakeLock.acquire(); 64 Log.i(this, "Acquiring full wake lock"); 65 } else if (mFullWakeLock.isHeld()) { 66 mFullWakeLock.release(); 67 Log.i(this, "Releasing full wake lock"); 68 } 69 } 70 } 71