| /* |
| * 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(); |
| } |
| } |