| /* |
| * 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.hardware.Sensor; |
| import android.hardware.SensorManager; |
| import android.os.BatteryStats; |
| import android.util.SparseArray; |
| |
| import com.android.internal.location.gnssmetrics.GnssMetrics; |
| |
| import java.util.List; |
| |
| public class SensorPowerCalculator extends PowerCalculator { |
| private final List<Sensor> mSensors; |
| private final double mGpsPower; |
| |
| public SensorPowerCalculator(PowerProfile profile, SensorManager sensorManager, |
| BatteryStats stats, long rawRealtimeUs, int statsType) { |
| mSensors = sensorManager.getSensorList(Sensor.TYPE_ALL); |
| mGpsPower = getAverageGpsPower(profile, stats, rawRealtimeUs, statsType); |
| } |
| |
| @Override |
| public void calculateApp(BatterySipper app, BatteryStats.Uid u, long rawRealtimeUs, |
| long rawUptimeUs, int statsType) { |
| // Process Sensor usage |
| final SparseArray<? extends BatteryStats.Uid.Sensor> sensorStats = u.getSensorStats(); |
| final int NSE = sensorStats.size(); |
| for (int ise = 0; ise < NSE; ise++) { |
| final BatteryStats.Uid.Sensor sensor = sensorStats.valueAt(ise); |
| final int sensorHandle = sensorStats.keyAt(ise); |
| final BatteryStats.Timer timer = sensor.getSensorTime(); |
| final long sensorTime = timer.getTotalTimeLocked(rawRealtimeUs, statsType) / 1000; |
| |
| switch (sensorHandle) { |
| case BatteryStats.Uid.Sensor.GPS: |
| app.gpsTimeMs = sensorTime; |
| app.gpsPowerMah = (app.gpsTimeMs * mGpsPower) / (1000*60*60); |
| break; |
| default: |
| final int sensorsCount = mSensors.size(); |
| for (int i = 0; i < sensorsCount; i++) { |
| final Sensor s = mSensors.get(i); |
| if (s.getHandle() == sensorHandle) { |
| app.sensorPowerMah += (sensorTime * s.getPower()) / (1000*60*60); |
| break; |
| } |
| } |
| break; |
| } |
| } |
| } |
| |
| private double getAverageGpsPower(PowerProfile profile, BatteryStats stats, long rawRealtimeUs, |
| int statsType) { |
| double averagePower = |
| profile.getAveragePowerOrDefault(PowerProfile.POWER_GPS_ON, -1); |
| if (averagePower != -1) { |
| return averagePower; |
| } |
| averagePower = 0; |
| long totalTime = 0; |
| double totalPower = 0; |
| for (int i = 0; i < GnssMetrics.NUM_GPS_SIGNAL_QUALITY_LEVELS; i++) { |
| long timePerLevel = stats.getGpsSignalQualityTime(i, rawRealtimeUs, statsType); |
| totalTime += timePerLevel; |
| totalPower += profile.getAveragePower(PowerProfile.POWER_GPS_SIGNAL_QUALITY_BASED, i) |
| * timePerLevel; |
| } |
| if (totalTime != 0) { |
| averagePower = totalPower / totalTime; |
| } |
| return averagePower; |
| } |
| } |