content: /*
   * Copyright (C) 2015 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 com.android.internal.os;
  
  import android.os.BatteryStats;
  
  /**
   * Power calculator for the flashlight.
   */
  public class FlashlightPowerCalculator extends PowerCalculator {
      private final double mFlashlightPowerOnAvg;
  
      public FlashlightPowerCalculator(PowerProfile profile) {
          mFlashlightPowerOnAvg = profile.getAveragePower(PowerProfile.POWER_FLASHLIGHT);
      }
  
      @Override
      public void calculateApp(BatterySipper app, BatteryStats.Uid u, long rawRealtimeUs,
                               long rawUptimeUs, int statsType) {
  
          // Calculate flashlight power usage.  Right now, this is based on the average power draw
          // of the flash unit when kept on over a short period of time.
          final BatteryStats.Timer timer = u.getFlashlightTurnedOnTimer();
          if (timer != null) {
              final long totalTime = timer.getTotalTimeLocked(rawRealtimeUs, statsType) / 1000;
              app.flashlightTimeMs = totalTime;
              app.flashlightPowerMah = (totalTime * mFlashlightPowerOnAvg) / (1000*60*60);
          } else {
              app.flashlightTimeMs = 0;
              app.flashlightPowerMah = 0;
          }
      }
  }
  