Size.java
/*
* Copyright (C) 2022 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 androidx.media3.common.util;
import static androidx.media3.common.util.Assertions.checkArgument;
import androidx.annotation.Nullable;
import androidx.media3.common.C;
/** Immutable class for describing width and height dimensions in pixels. */
@UnstableApi
public final class Size {
/** A static instance to represent an unknown size value. */
public static final Size UNKNOWN =
new Size(/* width= */ C.LENGTH_UNSET, /* height= */ C.LENGTH_UNSET);
private final int width;
private final int height;
/**
* Creates a new immutable Size instance.
*
* @param width The width of the size, in pixels, or {@link C#LENGTH_UNSET} if unknown.
* @param height The height of the size, in pixels, or {@link C#LENGTH_UNSET} if unknown.
* @throws IllegalArgumentException if an invalid {@code width} or {@code height} is specified.
*/
public Size(int width, int height) {
checkArgument(
(width == C.LENGTH_UNSET || width >= 0) && (height == C.LENGTH_UNSET || height >= 0));
this.width = width;
this.height = height;
}
/** Returns the width of the size (in pixels), or {@link C#LENGTH_UNSET} if unknown. */
public int getWidth() {
return width;
}
/** Returns the height of the size (in pixels), or {@link C#LENGTH_UNSET} if unknown. */
public int getHeight() {
return height;
}
@Override
public boolean equals(@Nullable Object obj) {
if (obj == null) {
return false;
}
if (this == obj) {
return true;
}
if (obj instanceof Size) {
Size other = (Size) obj;
return width == other.width && height == other.height;
}
return false;
}
@Override
public String toString() {
return width + "x" + height;
}
@Override
public int hashCode() {
// assuming most sizes are <2^16, doing a rotate will give us perfect hashing
return height ^ ((width << (Integer.SIZE / 2)) | (width >>> (Integer.SIZE / 2)));
}
}