content: /*
   * Copyright (C) 2018 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;
  
  /**
   * A {@link PowerCalculator} to calculate power consumed by audio and video hardware.
   *
   * Also see {@link PowerProfile#POWER_AUDIO} and {@link PowerProfile#POWER_VIDEO}.
   */
  public class MediaPowerCalculator extends PowerCalculator {
      private static final int MS_IN_HR = 1000 * 60 * 60;
      private final double mAudioAveragePowerMa;
      private final double mVideoAveragePowerMa;
  
      public MediaPowerCalculator(PowerProfile profile) {
          mAudioAveragePowerMa = profile.getAveragePower(PowerProfile.POWER_AUDIO);
          mVideoAveragePowerMa = profile.getAveragePower(PowerProfile.POWER_VIDEO);
      }
  
      @Override
      public void calculateApp(BatterySipper app, BatteryStats.Uid u, long rawRealtimeUs,
              long rawUptimeUs, int statsType) {
          // Calculate audio power usage, an estimate based on the average power routed to different
          // components like speaker, bluetooth, usb-c, earphone, etc.
          final BatteryStats.Timer audioTimer = u.getAudioTurnedOnTimer();
          if (audioTimer == null) {
              app.audioTimeMs = 0;
              app.audioPowerMah = 0;
          } else {
              final long totalTime = audioTimer.getTotalTimeLocked(rawRealtimeUs, statsType) / 1000;
              app.audioTimeMs = totalTime;
              app.audioPowerMah = (totalTime * mAudioAveragePowerMa) / MS_IN_HR;
          }
  
          // Calculate video power usage.
          final BatteryStats.Timer videoTimer = u.getVideoTurnedOnTimer();
          if (videoTimer == null) {
              app.videoTimeMs = 0;
              app.videoPowerMah = 0;
          } else {
              final long totalTime = videoTimer.getTotalTimeLocked(rawRealtimeUs, statsType) / 1000;
              app.videoTimeMs = totalTime;
              app.videoPowerMah = (totalTime * mVideoAveragePowerMa) / MS_IN_HR;
          }
      }
  }
  