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app/src/main/java/com/hippo/ehviewer/ImageWrapperHelper.java

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+/*
+ * Copyright 2015 Hippo Seven
+ *
+ * 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 com.hippo.ehviewer;
+
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+
+import com.hippo.conaco.ValueHelper;
+import com.hippo.conaco.ValueHolder;
+import com.hippo.drawable.ImageWrapper;
+import com.hippo.image.Image;
+import com.hippo.yorozuya.io.InputStreamPipe;
+
+public class ImageWrapperHelper implements ValueHelper<ImageWrapper> {
+
+    private static final String TAG = ImageWrapperHelper.class.getSimpleName();
+
+    @Nullable
+    @Override
+    public ImageWrapper decode(@NonNull InputStreamPipe isPipe) {
+        try {
+            isPipe.obtain();
+            Image image = Image.decode(isPipe.open(), false);
+            if (image != null) {
+                return new ImageWrapper(image);
+            } else {
+                return null;
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        } finally {
+            isPipe.close();
+            isPipe.release();
+        }
+    }
+
+    @Override
+    public int sizeOf(@NonNull String key, @NonNull ImageWrapper value) {
+        return value.getWidth() * value.getHeight() * 4;
+    }
+
+    @Override
+    public void onRemove(@NonNull String key, @NonNull ValueHolder<ImageWrapper> oldValue) {
+        if (oldValue.isFree()) {
+            oldValue.getValue().recycle();
+        }
+    }
+
+    @Override
+    public boolean useMemoryCache(@NonNull String key, ValueHolder<ImageWrapper> holder) {
+        return holder == null || !holder.getValue().isLarge();
+    }
+}