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Commit 105a3209 authored by Michael Wright's avatar Michael Wright Committed by Automerger Merge Worker
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Merge "[Improvement]Fix loss of permissibleRatio calcaulation accuracy." am: f9c69a2c 

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1655268

Change-Id: I0e9be2b7ff20e391ee9a103e8f067b0dbc1e36b5
parents 9c26127d f9c69a2c

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

+2 −3
Original line number Diff line number Diff line
@@ -440,9 +440,8 @@ public abstract class BrightnessMappingStrategy { 
    }



    private float permissibleRatio(float currLux, float prevLux) {

        return MathUtils.exp(MAX_GRAD

                * (MathUtils.log(currLux + LUX_GRAD_SMOOTHING)

                    - MathUtils.log(prevLux + LUX_GRAD_SMOOTHING)));

        return MathUtils.pow((currLux + LUX_GRAD_SMOOTHING)

                / (prevLux + LUX_GRAD_SMOOTHING), MAX_GRAD);

    }



    protected float inferAutoBrightnessAdjustment(float maxGamma, float desiredBrightness,