71 lines
2.1 KiB
Java
71 lines
2.1 KiB
Java
/*
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* Copyright 2016 Hippo Seven
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.hippo.ehviewer;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import com.hippo.conaco.ValueHelper;
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import com.hippo.image.ImageBitmap;
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import com.hippo.streampipe.InputStreamPipe;
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import java.io.IOException;
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public class ImageBitmapHelper implements ValueHelper<ImageBitmap> {
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private static final int MAX_CACHE_SIZE = 512 * 512;
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@Nullable
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@Override
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public ImageBitmap decode(@NonNull InputStreamPipe isPipe) {
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try {
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isPipe.obtain();
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return ImageBitmap.decode(isPipe.open());
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} catch (OutOfMemoryError | IOException e) {
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return null;
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} finally {
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isPipe.close();
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isPipe.release();
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}
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}
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@Override
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public int sizeOf(@NonNull String key, @NonNull ImageBitmap value) {
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return value.getWidth() * value.getHeight() * 4 /* value.getByteCount() TODO Update Image */;
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}
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@Override
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public void onAddToMemoryCache(@NonNull ImageBitmap oldValue) {
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oldValue.obtain();
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}
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@Override
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public void onRemoveFromMemoryCache(@NonNull String key, @NonNull ImageBitmap oldValue) {
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oldValue.release();
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}
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@Override
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public boolean useMemoryCache(@NonNull String key, ImageBitmap value) {
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if (value != null) {
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return value.getWidth() * value.getHeight() <= MAX_CACHE_SIZE
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/* value.getByteCount() <= MAX_CACHE_BYTE_COUNT TODO Update Image */;
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} else {
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return true;
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}
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}
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}
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