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Commit 1199c8f4 authored by Christine Franks's avatar Christine Franks
Browse files

Update night display intensity coefficients 

Bug: 64019890
Test: manual - adjust intensity slider
Change-Id: I38ec7385b36367e5c9f6c606e65a982efbd32a1b
parent 9328cb9f

core/res/res/values/config.xml

+12 −0
Original line number Diff line number Diff line
@@ -882,6 +882,18 @@ 
    <!-- Maximum color temperature, in Kelvin, supported by Night display. -->

    <integer name="config_nightDisplayColorTemperatureMax">4082</integer>



    <string-array name="config_nightDisplayColorTemperatureCoefficients">

        <!-- R a-coefficient --> <item>0.0</item>

        <!-- R b-coefficient --> <item>0.0</item>

        <!-- R y-intercept --> <item>1.0</item>

        <!-- G a-coefficient --> <item>-0.00000000962353339</item>

        <!-- G b-coefficient --> <item>0.000153045476</item>

        <!-- G y-intercept --> <item>0.390782778</item>

        <!-- B a-coefficient --> <item>-0.0000000189359041</item>

        <!-- B b-coefficient --> <item>0.000302412211</item>

        <!-- B y-intercept --> <item>-0.198650895</item>

    </string-array>



    <!-- Indicate whether to allow the device to suspend when the screen is off

         due to the proximity sensor.  This resource should only be set to true

         if the sensor HAL correctly handles the proximity sensor as a wake-up source.

core/res/res/values/symbols.xml

+1 −0
Original line number Diff line number Diff line
@@ -2813,6 +2813,7 @@ 
  <java-symbol type="integer" name="config_nightDisplayColorTemperatureDefault" />

  <java-symbol type="integer" name="config_nightDisplayColorTemperatureMin" />

  <java-symbol type="integer" name="config_nightDisplayColorTemperatureMax" />

  <java-symbol type="array" name="config_nightDisplayColorTemperatureCoefficients" />



  <!-- Default first user restrictions -->

  <java-symbol type="array" name="config_defaultFirstUserRestrictions" />

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

+14 −18
Original line number Diff line number Diff line
@@ -52,6 +52,8 @@ import java.util.concurrent.atomic.AtomicBoolean; 
import java.util.Calendar;

import java.util.TimeZone;



import com.android.internal.R;



import static com.android.server.display.DisplayTransformManager.LEVEL_COLOR_MATRIX_NIGHT_DISPLAY;



/**
@@ -110,19 +112,7 @@ public final class NightDisplayService extends SystemService 


    private float[] mMatrixNight = new float[16];



    /**

     *  The 3x3 color transformation matrix is formatted like so:

     *  <table>

     *      <tr><td>R: a coefficient</td><td>G: a coefficient</td><td>B: a coefficient</td></tr>

     *      <tr><td>R: b coefficient</td><td>G: b coefficient</td><td>B: b coefficient</td></tr>

     *      <tr><td>R: y-intercept</td><td>G: y-intercept</td><td>B: y-intercept</td></tr>

     *  </table>

     */

    private static final float[] mColorTempCoefficients = new float[] {

            0.0f, -0.000000014365268757f, -0.000000000910931179f,

            0.0f, 0.000255092801250106f, 0.000207598323269139f,

            1.0f, -0.064156942434907716f, -0.349361641294833436f

    };

    private final float[] mColorTempCoefficients = new float[9];



    private int mCurrentUser = UserHandle.USER_NULL;

    private ContentObserver mUserSetupObserver;
@@ -136,6 +126,12 @@ public final class NightDisplayService extends SystemService 
    public NightDisplayService(Context context) {

        super(context);

        mHandler = new Handler(Looper.getMainLooper());



        final String[] coefficients = context.getResources().getStringArray(

                R.array.config_nightDisplayColorTemperatureCoefficients);

        for (int i = 0; i < 9 && i < coefficients.length; i++) {

            mColorTempCoefficients[i] = Float.parseFloat(coefficients[i]);

        }

    }



    @Override
@@ -410,11 +406,11 @@ public final class NightDisplayService extends SystemService 


        final float squareTemperature = colorTemperature * colorTemperature;

        final float red = squareTemperature * mColorTempCoefficients[0]

                + colorTemperature * mColorTempCoefficients[3] + mColorTempCoefficients[6];

        final float green = squareTemperature * mColorTempCoefficients[1]

                + colorTemperature * mColorTempCoefficients[4] + mColorTempCoefficients[7];

        final float blue = squareTemperature * mColorTempCoefficients[2]

                + colorTemperature * mColorTempCoefficients[5] + mColorTempCoefficients[8];

                + colorTemperature * mColorTempCoefficients[1] + mColorTempCoefficients[2];

        final float green = squareTemperature * mColorTempCoefficients[3]

                + colorTemperature * mColorTempCoefficients[4] + mColorTempCoefficients[5];

        final float blue = squareTemperature * mColorTempCoefficients[6]

                + colorTemperature * mColorTempCoefficients[7] + mColorTempCoefficients[8];

        outTemp[0] = red;

        outTemp[5] = green;

        outTemp[10] = blue;