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Commit f9c69a2c authored by Michael Wright's avatar Michael Wright Committed by Gerrit Code Review
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Merge "[Improvement]Fix loss of permissibleRatio calcaulation accuracy."

parents ba4eeb87 2aaa220e

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,