| /* |
| * Copyright (C) 2018 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.util.imagepool; |
| |
| import com.android.tools.layoutlib.annotations.Nullable; |
| import com.android.tools.layoutlib.annotations.VisibleForTesting; |
| |
| import android.util.imagepool.ImagePool.Image.Orientation; |
| |
| import java.awt.image.BufferedImage; |
| import java.lang.ref.SoftReference; |
| import java.util.LinkedList; |
| import java.util.Queue; |
| |
| /** |
| * Data model for image pool. Bucket contains the list of same sized buffered image in soft ref. |
| */ |
| /* private package */ class Bucket { |
| |
| @VisibleForTesting final Queue<SoftReference<BufferedImage>> mBufferedImageRef = new LinkedList<>(); |
| |
| public boolean isEmpty() { |
| return mBufferedImageRef.isEmpty(); |
| } |
| |
| @Nullable |
| public BufferedImage remove() { |
| if (mBufferedImageRef.isEmpty()) { |
| return null; |
| } |
| |
| SoftReference<BufferedImage> reference = mBufferedImageRef.remove(); |
| return reference == null ? null : reference.get(); |
| } |
| |
| public void offer(BufferedImage img) { |
| mBufferedImageRef.offer(new SoftReference<>(img)); |
| } |
| |
| public void clear() { |
| mBufferedImageRef.clear(); |
| } |
| |
| static class BucketCreationMetaData { |
| public final int mWidth; |
| public final int mHeight; |
| public final int mType; |
| public final int mNumberOfCopies; |
| public final Orientation mOrientation; |
| public final long mMaxCacheSize; |
| |
| BucketCreationMetaData(int width, int height, int type, int numberOfCopies, |
| Orientation orientation, long maxCacheSize) { |
| mWidth = width; |
| mHeight = height; |
| mType = type; |
| mNumberOfCopies = numberOfCopies; |
| mOrientation = orientation; |
| mMaxCacheSize = maxCacheSize; |
| } |
| } |
| } |