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Commit f74a719d authored by Fiona Campbell's avatar Fiona Campbell
Browse files

Fix brightness slider - allow minimum value 

ag/11455081 stopped the brightness slider from reaching the minimum value. This change reverts this but other changes in this topic also change the Walleye initial curves to start at 1 instead of 0.

Bug: 157838219

Test: manual - cover ambient light sensor - ensure brightness reduces
but not to 0. Move the slider to min and check that it stays there. grep for brightness splines too:
adb shell dumpsys display | grep -i "spline\|mConfig"

Change-Id: I26334986d299d297e6d1e320222566b22497b2ff
parent 829ac140

services/core/java/com/android/server/display/BrightnessMappingStrategy.java

+4 −3
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ import android.util.Pair; 
import android.util.Slog;

import android.util.Spline;



import com.android.internal.BrightnessSynchronizer;

import com.android.internal.annotations.VisibleForTesting;

import com.android.internal.util.Preconditions;

import com.android.server.display.utils.Plog;
@@ -348,9 +349,9 @@ public abstract class BrightnessMappingStrategy { 


    // Normalize entire brightness range to 0 - 1.

    protected static float normalizeAbsoluteBrightness(int brightness) {

        brightness = MathUtils.constrain(brightness,

                PowerManager.BRIGHTNESS_OFF, PowerManager.BRIGHTNESS_ON);

        return (float) brightness / PowerManager.BRIGHTNESS_ON;

        return BrightnessSynchronizer.brightnessIntToFloat(brightness,

                PowerManager.BRIGHTNESS_OFF + 1, PowerManager.BRIGHTNESS_ON,

                PowerManager.BRIGHTNESS_MIN, PowerManager.BRIGHTNESS_MAX);

    }



    private Pair<float[], float[]> insertControlPoint(