sdk/sources/android-23/com/android/internal/os/SensorPowerCalculator.java

   1 /*
   2  * Copyright (C) 2015 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 package com.android.internal.os;
  17
  18 import android.hardware.Sensor;
  19 import android.hardware.SensorManager;
  20 import android.os.BatteryStats;
  21 import android.util.SparseArray;
  22
  23 import java.util.List;
  24
  25 public class SensorPowerCalculator extends PowerCalculator {
  26     private final List<Sensor> mSensors;
  27     private final double mGpsPowerOn;
  28
  29     public SensorPowerCalculator(PowerProfile profile, SensorManager sensorManager) {
  30         mSensors = sensorManager.getSensorList(Sensor.TYPE_ALL);
  31         mGpsPowerOn = profile.getAveragePower(PowerProfile.POWER_GPS_ON);
  32     }
  33
  34     @Override
  35     public void calculateApp(BatterySipper app, BatteryStats.Uid u, long rawRealtimeUs,
  36                              long rawUptimeUs, int statsType) {
  37         // Process Sensor usage
  38         final SparseArray<? extends BatteryStats.Uid.Sensor> sensorStats = u.getSensorStats();
  39         final int NSE = sensorStats.size();
  40         for (int ise = 0; ise < NSE; ise++) {
  41             final BatteryStats.Uid.Sensor sensor = sensorStats.valueAt(ise);
  42             final int sensorHandle = sensorStats.keyAt(ise);
  43             final BatteryStats.Timer timer = sensor.getSensorTime();
  44             final long sensorTime = timer.getTotalTimeLocked(rawRealtimeUs, statsType) / 1000;
  45             switch (sensorHandle) {
  46                 case BatteryStats.Uid.Sensor.GPS:
  47                     app.gpsTimeMs = sensorTime;
  48                     app.gpsPowerMah = (app.gpsTimeMs * mGpsPowerOn) / (1000*60*60);
  49                     break;
  50                 default:
  51                     final int sensorsCount = mSensors.size();
  52                     for (int i = 0; i < sensorsCount; i++) {
  53                         final Sensor s = mSensors.get(i);
  54                         if (s.getHandle() == sensorHandle) {
  55                             app.sensorPowerMah += (sensorTime * s.getPower()) / (1000*60*60);
  56                             break;
  57                         }
  58                     }
  59                     break;
  60             }
  61         }
  62     }
  63 }