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) {
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;
}
}