Create a ParcelableColorSpace
Bug: 148412652
Test: ParcelableColorSpaceTest CTS
Change-Id: If0901367e501e2ecfc71b9ed29ec7d8dd4d0550f
diff --git a/graphics/java/android/graphics/ColorSpace.java b/graphics/java/android/graphics/ColorSpace.java
index 06d4fbd..ce8ff7d 100644
--- a/graphics/java/android/graphics/ColorSpace.java
+++ b/graphics/java/android/graphics/ColorSpace.java
@@ -867,7 +867,8 @@
}
}
- private ColorSpace(
+ /** @hide */
+ ColorSpace(
@NonNull String name,
@NonNull Model model,
@IntRange(from = MIN_ID, to = MAX_ID) int id) {
diff --git a/graphics/java/android/graphics/ParcelableColorSpace.java b/graphics/java/android/graphics/ParcelableColorSpace.java
new file mode 100644
index 0000000..f9033a5
--- /dev/null
+++ b/graphics/java/android/graphics/ParcelableColorSpace.java
@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.graphics;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+/**
+ * A {@link Parcelable} {@link ColorSpace}. In order to enable parceling, the ColorSpace
+ * must be either a {@link ColorSpace.Named Named} ColorSpace or a {@link ColorSpace.Rgb} instance
+ * that has an ICC parametric transfer function as returned by {@link Rgb#getTransferParameters()}.
+ * TODO: Make public
+ * @hide
+ */
+public final class ParcelableColorSpace extends ColorSpace implements Parcelable {
+ private final ColorSpace mColorSpace;
+
+ /**
+ * Checks if the given ColorSpace is able to be parceled. A ColorSpace can only be
+ * parceled if it is a {@link ColorSpace.Named Named} ColorSpace or a {@link ColorSpace.Rgb}
+ * instance that has an ICC parametric transfer function as returned by
+ * {@link Rgb#getTransferParameters()}
+ */
+ public static boolean isParcelable(@NonNull ColorSpace colorSpace) {
+ if (colorSpace.getId() == ColorSpace.MIN_ID) {
+ if (!(colorSpace instanceof ColorSpace.Rgb)) {
+ return false;
+ }
+ ColorSpace.Rgb rgb = (ColorSpace.Rgb) colorSpace;
+ if (rgb.getTransferParameters() == null) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Constructs a new ParcelableColorSpace that wraps the provided ColorSpace.
+ *
+ * @param colorSpace The ColorSpace to wrap. The ColorSpace must be either named or be an
+ * RGB ColorSpace with an ICC parametric transfer function.
+ * @throws IllegalArgumentException If the provided ColorSpace does not satisfy the requirements
+ * to be parceled. See {@link #isParcelable(ColorSpace)}.
+ */
+ public ParcelableColorSpace(@NonNull ColorSpace colorSpace) {
+ super(colorSpace.getName(), colorSpace.getModel(), colorSpace.getId());
+ mColorSpace = colorSpace;
+
+ if (mColorSpace.getId() == ColorSpace.MIN_ID) {
+ if (!(mColorSpace instanceof ColorSpace.Rgb)) {
+ throw new IllegalArgumentException(
+ "Unable to parcel unknown ColorSpaces that are not ColorSpace.Rgb");
+ }
+ ColorSpace.Rgb rgb = (ColorSpace.Rgb) mColorSpace;
+ if (rgb.getTransferParameters() == null) {
+ throw new IllegalArgumentException("ColorSpace must use an ICC "
+ + "parametric transfer function to be parcelable");
+ }
+ }
+ }
+
+ public @NonNull ColorSpace getColorSpace() {
+ return mColorSpace;
+ }
+
+ @Override
+ public int describeContents() {
+ return 0;
+ }
+
+ @Override
+ public void writeToParcel(@NonNull Parcel dest, int flags) {
+ final int id = mColorSpace.getId();
+ dest.writeInt(id);
+ if (id == ColorSpace.MIN_ID) {
+ // Not a named color space. We have to actually write, like, stuff. And things. Ugh.
+ // Cast is safe because this was asserted in the constructor
+ ColorSpace.Rgb rgb = (ColorSpace.Rgb) mColorSpace;
+ dest.writeString(rgb.getName());
+ dest.writeFloatArray(rgb.getPrimaries());
+ dest.writeFloatArray(rgb.getWhitePoint());
+ ColorSpace.Rgb.TransferParameters transferParameters = rgb.getTransferParameters();
+ dest.writeDouble(transferParameters.a);
+ dest.writeDouble(transferParameters.b);
+ dest.writeDouble(transferParameters.c);
+ dest.writeDouble(transferParameters.d);
+ dest.writeDouble(transferParameters.e);
+ dest.writeDouble(transferParameters.f);
+ dest.writeDouble(transferParameters.g);
+ }
+ }
+
+ @NonNull
+ public static final Parcelable.Creator<ParcelableColorSpace> CREATOR =
+ new Parcelable.Creator<ParcelableColorSpace>() {
+
+ public @NonNull ParcelableColorSpace createFromParcel(@NonNull Parcel in) {
+ final int id = in.readInt();
+ if (id == ColorSpace.MIN_ID) {
+ String name = in.readString();
+ float[] primaries = in.createFloatArray();
+ float[] whitePoint = in.createFloatArray();
+ double a = in.readDouble();
+ double b = in.readDouble();
+ double c = in.readDouble();
+ double d = in.readDouble();
+ double e = in.readDouble();
+ double f = in.readDouble();
+ double g = in.readDouble();
+ ColorSpace.Rgb.TransferParameters function =
+ new ColorSpace.Rgb.TransferParameters(a, b, c, d, e, f, g);
+ return new ParcelableColorSpace(
+ new ColorSpace.Rgb(name, primaries, whitePoint, function));
+ } else {
+ return new ParcelableColorSpace(ColorSpace.get(id));
+ }
+ }
+
+ public ParcelableColorSpace[] newArray(int size) {
+ return new ParcelableColorSpace[size];
+ }
+ };
+
+ @Override
+ public boolean isWideGamut() {
+ return mColorSpace.isWideGamut();
+ }
+
+ @Override
+ public float getMinValue(int component) {
+ return mColorSpace.getMinValue(component);
+ }
+
+ @Override
+ public float getMaxValue(int component) {
+ return mColorSpace.getMaxValue(component);
+ }
+
+ @Override
+ public @NonNull float[] toXyz(@NonNull float[] v) {
+ return mColorSpace.toXyz(v);
+ }
+
+ @Override
+ public @NonNull float[] fromXyz(@NonNull float[] v) {
+ return mColorSpace.fromXyz(v);
+ }
+
+ @Override
+ public boolean equals(@Nullable Object o) {
+ if (this == o) return true;
+ if (o == null || getClass() != o.getClass()) return false;
+ ParcelableColorSpace other = (ParcelableColorSpace) o;
+ return mColorSpace.equals(other.mColorSpace);
+ }
+
+ @Override
+ public int hashCode() {
+ return mColorSpace.hashCode();
+ }
+
+ /** @hide */
+ @Override
+ long getNativeInstance() {
+ return mColorSpace.getNativeInstance();
+ }
+}