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Introduce a hysteresis for outdoor condition determination. 

Avoids flicker when brightness is around the threshold.

Change-Id: I8658725450496b89123abb26b6ef8ce333c709e5
This commit is contained in:
Danny Baumann 2016-08-02 09:26:49 +02:00 committed by Steve Kondik
parent d62a53f690
commit c0dd46d30f
4 changed files with 13 additions and 3 deletions
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8
cm/lib/main/java/org/cyanogenmod/platform/internal/display/AmbientLuxObserver.java
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@ -38,6 +38,7 @@ public class AmbientLuxObserver {
private final SensorManager mSensorManager;
private final float mThresholdLux;
private final float mHysteresisLux;
private final int mThresholdDuration;
private boolean mLightSensorEnabled = false;
@ -61,9 +62,10 @@ public class AmbientLuxObserver {
}
public AmbientLuxObserver(Context context, Looper looper,
float thresholdLux, int thresholdDuration) {
float thresholdLux, float hysteresisLux, int thresholdDuration) {
mLuxHandler = new AmbientLuxHandler(looper);
mThresholdLux = thresholdLux;
mHysteresisLux = hysteresisLux;
mThresholdDuration = thresholdDuration;
mRingBuffer = new TimedMovingAverageRingBuffer(thresholdDuration);
@ -103,7 +105,9 @@ public class AmbientLuxObserver {
" mAmbientLux=" + mAmbientLux);
}
direction = mAmbientLux >= mThresholdLux ? HIGH : LOW;
final float threshold = mState == HIGH
? mThresholdLux - mHysteresisLux : mThresholdLux;
direction = mAmbientLux >= threshold ? HIGH : LOW;
if (mState != direction) {
mState = direction;
if (mCallback != null) {

6
cm/lib/main/java/org/cyanogenmod/platform/internal/display/OutdoorModeController.java
View File

@ -40,6 +40,7 @@ public class OutdoorModeController extends LiveDisplayFeature {
// default values
private final int mDefaultOutdoorLux;
private final int mOutdoorLuxHysteresis;
private final boolean mDefaultAutoOutdoorMode;
private final boolean mSelfManaged;
@ -59,6 +60,8 @@ public class OutdoorModeController extends LiveDisplayFeature {
mDefaultOutdoorLux = mContext.getResources().getInteger(
org.cyanogenmod.platform.internal.R.integer.config_outdoorAmbientLux);
mOutdoorLuxHysteresis = mContext.getResources().getInteger(
org.cyanogenmod.platform.internal.R.integer.config_outdoorAmbientLuxHysteresis);
mDefaultAutoOutdoorMode = mContext.getResources().getBoolean(
org.cyanogenmod.platform.internal.R.bool.config_defaultAutoOutdoorMode);
}
@ -71,7 +74,7 @@ public class OutdoorModeController extends LiveDisplayFeature {
if (!mSelfManaged) {
mLuxObserver = new AmbientLuxObserver(mContext, mHandler.getLooper(),
mDefaultOutdoorLux, SENSOR_WINDOW_MS);
mDefaultOutdoorLux, mOutdoorLuxHysteresis, SENSOR_WINDOW_MS);
}
registerSettings(
@ -128,6 +131,7 @@ public class OutdoorModeController extends LiveDisplayFeature {
pw.println(" mSelfManaged=" + mSelfManaged);
if (!mSelfManaged) {
pw.println(" mDefaultOutdoorLux=" + mDefaultOutdoorLux);
pw.println(" mOutdoorLuxHysteresis=" + mOutdoorLuxHysteresis);
pw.println();
pw.println(" OutdoorModeController State:");
pw.println(" mAutoOutdoorMode=" + isAutomaticOutdoorModeEnabled());

1
cm/res/res/values/config.xml
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@ -55,6 +55,7 @@
<integer name="config_dayColorTemperature">6500</integer>
<integer name="config_nightColorTemperature">4800</integer>
<integer name="config_outdoorAmbientLux">12000</integer>
<integer name="config_outdoorAmbientLuxHysteresis">1500</integer>
<integer name="config_defaultLiveDisplayMode">2</integer>
<!-- These values should map to the true min and max

1
cm/res/res/values/symbols.xml
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@ -72,6 +72,7 @@
<java-symbol type="integer" name="config_dayColorTemperature" />
<java-symbol type="integer" name="config_nightColorTemperature" />
<java-symbol type="integer" name="config_outdoorAmbientLux" />
<java-symbol type="integer" name="config_outdoorAmbientLuxHysteresis" />
<java-symbol type="integer" name="config_defaultLiveDisplayMode" />
<java-symbol type="integer" name="config_minColorTemperature" />
<java-symbol type="integer" name="config_maxColorTemperature" />