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Merge "Add ambient light ring buffer for initial data gathering period." into nyc-dev

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This commit is contained in:
TreeHugger Robot
2016-04-22 19:00:23 +00:00
committed by Android (Google) Code Review
parent 9ef0ce1749 103fb78ac1
commit ea999ac8e4
1 changed files with 16 additions and 2 deletions
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18
services/core/java/com/android/server/display/AutomaticBrightnessController.java
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@@ -147,6 +147,9 @@ class AutomaticBrightnessController {
// A ring buffer containing all of the recent ambient light sensor readings.
private AmbientLightRingBuffer mAmbientLightRingBuffer;
// A ring buffer containing the light sensor readings for the initial horizon period.
private AmbientLightRingBuffer mInitialHorizonAmbientLightRingBuffer;
// The handler
private AutomaticBrightnessHandler mHandler;
@@ -204,7 +207,10 @@ class AutomaticBrightnessController {
mScreenAutoBrightnessAdjustmentMaxGamma = autoBrightnessAdjustmentMaxGamma;
mHandler = new AutomaticBrightnessHandler(looper);
mAmbientLightRingBuffer = new AmbientLightRingBuffer(mLightSensorRate, mAmbientLightHorizon);
mAmbientLightRingBuffer =
new AmbientLightRingBuffer(mLightSensorRate, mAmbientLightHorizon);
mInitialHorizonAmbientLightRingBuffer =
new AmbientLightRingBuffer(mLightSensorRate, mAmbientLightHorizon);
if (!DEBUG_PRETEND_LIGHT_SENSOR_ABSENT) {
mLightSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_LIGHT);
@@ -273,6 +279,8 @@ class AutomaticBrightnessController {
pw.println(" mLastObservedLuxTime=" + TimeUtils.formatUptime(mLastObservedLuxTime));
pw.println(" mRecentLightSamples=" + mRecentLightSamples);
pw.println(" mAmbientLightRingBuffer=" + mAmbientLightRingBuffer);
pw.println(" mInitialHorizonAmbientLightRingBuffer=" +
mInitialHorizonAmbientLightRingBuffer);
pw.println(" mScreenAutoBrightness=" + mScreenAutoBrightness);
pw.println(" mScreenAutoBrightnessAdjustment=" + mScreenAutoBrightnessAdjustment);
pw.println(" mScreenAutoBrightnessAdjustmentMaxGamma=" + mScreenAutoBrightnessAdjustmentMaxGamma);
@@ -295,6 +303,7 @@ class AutomaticBrightnessController {
mAmbientLuxValid = !mResetAmbientLuxAfterWarmUpConfig;
mRecentLightSamples = 0;
mAmbientLightRingBuffer.clear();
mInitialHorizonAmbientLightRingBuffer.clear();
mHandler.removeMessages(MSG_UPDATE_AMBIENT_LUX);
mSensorManager.unregisterListener(mLightSensorListener);
}
@@ -311,6 +320,11 @@ class AutomaticBrightnessController {
private void applyLightSensorMeasurement(long time, float lux) {
mRecentLightSamples++;
// Store all of the light measurements for the intial horizon period. This is to help
// diagnose dim wake ups and slow responses in b/27951906.
if (time <= mLightSensorEnableTime + mAmbientLightHorizon) {
mInitialHorizonAmbientLightRingBuffer.push(time, lux);
}
mAmbientLightRingBuffer.prune(time - mAmbientLightHorizon);
mAmbientLightRingBuffer.push(time, lux);
@@ -617,7 +631,7 @@ class AutomaticBrightnessController {
void updateBrightness();
}
private static final class AmbientLightRingBuffer{
private static final class AmbientLightRingBuffer {
// Proportional extra capacity of the buffer beyond the expected number of light samples
// in the horizon
private static final float BUFFER_SLACK = 1.5f;