Split global saturation into a dedicated helper

Bug: 124474236
Test: atest FrameworksServicesTests:GlobalSaturationTintControllerTest

Change-Id: Ib70f84a917b3ce370b146f40cebbaa570574da47
diff --git a/services/core/java/com/android/server/display/color/ColorDisplayService.java b/services/core/java/com/android/server/display/color/ColorDisplayService.java
index 45567e5..9c02aab 100644
--- a/services/core/java/com/android/server/display/color/ColorDisplayService.java
+++ b/services/core/java/com/android/server/display/color/ColorDisplayService.java
@@ -26,7 +26,6 @@
 
 import static com.android.server.display.color.DisplayTransformManager.LEVEL_COLOR_MATRIX_DISPLAY_WHITE_BALANCE;
 import static com.android.server.display.color.DisplayTransformManager.LEVEL_COLOR_MATRIX_NIGHT_DISPLAY;
-import static com.android.server.display.color.DisplayTransformManager.LEVEL_COLOR_MATRIX_SATURATION;
 
 import android.Manifest;
 import android.animation.Animator;
@@ -88,19 +87,13 @@
 import java.time.LocalTime;
 import java.time.ZoneId;
 import java.time.format.DateTimeParseException;
-import java.util.Arrays;
 
 /**
  * Controls the display's color transforms.
  */
 public final class ColorDisplayService extends SystemService {
 
-    private static final String TAG = "ColorDisplayService";
-
-    /**
-     * The transition time, in milliseconds, for Night Display to turn on/off.
-     */
-    private static final long TRANSITION_DURATION = 3000L;
+    static final String TAG = "ColorDisplayService";
 
     /**
      * The identity matrix, used if one of the given matrices is {@code null}.
@@ -111,6 +104,11 @@
         Matrix.setIdentityM(MATRIX_IDENTITY, 0);
     }
 
+    /**
+     * The transition time, in milliseconds, for Night Display to turn on/off.
+     */
+    private static final long TRANSITION_DURATION = 3000L;
+
     private static final int MSG_APPLY_NIGHT_DISPLAY_IMMEDIATE = 0;
     private static final int MSG_APPLY_NIGHT_DISPLAY_ANIMATED = 1;
     private static final int MSG_APPLY_GLOBAL_SATURATION = 2;
@@ -133,59 +131,8 @@
     final DisplayWhiteBalanceTintController mDisplayWhiteBalanceTintController =
             new DisplayWhiteBalanceTintController();
 
-    private final TintController mGlobalSaturationTintController = new TintController() {
-
-        private float[] mMatrixGlobalSaturation = new float[16];
-
-        @Override
-        public void setUp(Context context, boolean needsLinear) {
-        }
-
-        @Override
-        public float[] getMatrix() {
-            return Arrays.copyOf(mMatrixGlobalSaturation, mMatrixGlobalSaturation.length);
-        }
-
-        @Override
-        public void setMatrix(int saturationLevel) {
-            if (saturationLevel < 0) {
-                saturationLevel = 0;
-            } else if (saturationLevel > 100) {
-                saturationLevel = 100;
-            }
-            Slog.d(TAG, "Setting saturation level: " + saturationLevel);
-
-            if (saturationLevel == 100) {
-                setActivated(false);
-                Matrix.setIdentityM(mMatrixGlobalSaturation, 0);
-            } else {
-                setActivated(true);
-                float saturation = saturationLevel * 0.1f;
-                float desaturation = 1.0f - saturation;
-                float[] luminance = {0.231f * desaturation, 0.715f * desaturation,
-                        0.072f * desaturation};
-                mMatrixGlobalSaturation[0] = luminance[0] + saturation;
-                mMatrixGlobalSaturation[1] = luminance[0];
-                mMatrixGlobalSaturation[2] = luminance[0];
-                mMatrixGlobalSaturation[4] = luminance[1];
-                mMatrixGlobalSaturation[5] = luminance[1] + saturation;
-                mMatrixGlobalSaturation[6] = luminance[1];
-                mMatrixGlobalSaturation[8] = luminance[2];
-                mMatrixGlobalSaturation[9] = luminance[2];
-                mMatrixGlobalSaturation[10] = luminance[2] + saturation;
-            }
-        }
-
-        @Override
-        public int getLevel() {
-            return LEVEL_COLOR_MATRIX_SATURATION;
-        }
-
-        @Override
-        public boolean isAvailable(Context context) {
-            return ColorDisplayManager.isColorTransformAccelerated(context);
-        }
-    };
+    private final TintController mGlobalSaturationTintController =
+            new GlobalSaturationTintController();
 
     /**
      * Matrix and offset used for converting color to grayscale.
@@ -1084,82 +1031,6 @@
         }
     }
 
-    private abstract static class TintController {
-
-        private ValueAnimator mAnimator;
-        private Boolean mIsActivated;
-
-        public ValueAnimator getAnimator() {
-            return mAnimator;
-        }
-
-        public void setAnimator(ValueAnimator animator) {
-            mAnimator = animator;
-        }
-
-        /**
-         * Cancel the animator if it's still running.
-         */
-        public void cancelAnimator() {
-            if (mAnimator != null) {
-                mAnimator.cancel();
-            }
-        }
-
-        /**
-         * End the animator if it's still running, jumping to the end state.
-         */
-        public void endAnimator() {
-            if (mAnimator != null) {
-                mAnimator.end();
-                mAnimator = null;
-            }
-        }
-
-        public void setActivated(Boolean isActivated) {
-            mIsActivated = isActivated;
-        }
-
-        public boolean isActivated() {
-            return mIsActivated != null && mIsActivated;
-        }
-
-        public boolean isActivatedStateNotSet() {
-            return mIsActivated == null;
-        }
-
-        /**
-         * Dump debug information.
-         */
-        public void dump(PrintWriter pw) {
-        }
-
-        /**
-         * Set up any constants needed for computing the matrix.
-         */
-        public abstract void setUp(Context context, boolean needsLinear);
-
-        /**
-         * Sets the 4x4 matrix to apply.
-         */
-        public abstract void setMatrix(int value);
-
-        /**
-         * Get the 4x4 matrix to apply.
-         */
-        public abstract float[] getMatrix();
-
-        /**
-         * Get the color transform level to apply the matrix.
-         */
-        public abstract int getLevel();
-
-        /**
-         * Returns whether or not this transform type is available on this device.
-         */
-        public abstract boolean isAvailable(Context context);
-    }
-
     private final class NightDisplayTintController extends TintController {
 
         private final float[] mMatrix = new float[16];