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      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 com.android.internal.annotations.VisibleForTesting;
     20 
     21 /**
     22  * Handles acquisition and release of wake locks relating to call state.
     23  */
     24 @VisibleForTesting
     25 public class InCallWakeLockController extends CallsManagerListenerBase {
     26 
     27     private final TelecomWakeLock mTelecomWakeLock;
     28     private final CallsManager mCallsManager;
     29 
     30     @VisibleForTesting
     31     public InCallWakeLockController(TelecomWakeLock telecomWakeLock, CallsManager callsManager) {
     32         mCallsManager = callsManager;
     33 
     34         mTelecomWakeLock = telecomWakeLock;
     35         mTelecomWakeLock.setReferenceCounted(false);
     36     }
     37 
     38     @Override
     39     public void onCallAdded(Call call) {
     40         if (call.isExternalCall()) {
     41             return;
     42         }
     43         handleWakeLock();
     44     }
     45 
     46     @Override
     47     public void onCallRemoved(Call call) {
     48         if (call.isExternalCall()) {
     49             return;
     50         }
     51         handleWakeLock();
     52     }
     53 
     54     @Override
     55     public void onCallStateChanged(Call call, int oldState, int newState) {
     56         if (call.isExternalCall()) {
     57             return;
     58         }
     59         handleWakeLock();
     60     }
     61 
     62     private void handleWakeLock() {
     63         // We grab a full lock as long as there exists a ringing call.
     64         Call ringingCall = mCallsManager.getRingingCall();
     65         if (ringingCall != null) {
     66             mTelecomWakeLock.acquire();
     67             Log.i(this, "Acquiring full wake lock");
     68         } else {
     69             mTelecomWakeLock.release(0);
     70             Log.i(this, "Releasing full wake lock");
     71         }
     72     }
     73 }
     74