Use jitpack libraries

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

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2016 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.image.Image;
+import com.hippo.image.ImageBitmap;
+import com.hippo.streampipe.InputStreamPipe;
+
+import java.io.IOException;
+
+public class ImageBitmapHelper implements ValueHelper<ImageBitmap> {
+
+    private static final int MAX_CACHE_SIZE = 512 * 512;
+
+    @Nullable
+    @Override
+    public ImageBitmap decode(@NonNull InputStreamPipe isPipe) {
+        try {
+            isPipe.obtain();
+            Image image = Image.decode(isPipe.open(), false);
+            if (image != null) {
+                return new ImageBitmap(image);
+            } else {
+                return null;
+            }
+        } catch (OutOfMemoryError e) {
+            return null;
+        } catch (IOException e) {
+            return null;
+        } finally {
+            isPipe.close();
+            isPipe.release();
+        }
+    }
+
+    @Override
+    public int sizeOf(@NonNull String key, @NonNull ImageBitmap value) {
+        return value.getWidth() * value.getHeight() * 4;
+    }
+
+    @Override
+    public void onAddToMemoryCache(@NonNull ImageBitmap oldValue) {
+        oldValue.obtain();
+    }
+
+    @Override
+    public void onRemoveFromMemoryCache(@NonNull String key, @NonNull ImageBitmap oldValue) {
+        oldValue.release();
+    }
+
+    @Override
+    public boolean useMemoryCache(@NonNull String key, ImageBitmap value) {
+        if (value != null) {
+            return value.getWidth() * value.getHeight() <= MAX_CACHE_SIZE;
+        } else {
+            return true;
+        }
+    }
+}