<!-- 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.
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;
/**
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;
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
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;