Initial checkin of AOSP Messaging app.

b/23110861

Change-Id: I11db999bd10656801e618f78ab2b2ef74136fff1

src/com/android/messaging/datamodel/media/ImageResource.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2015 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 com.android.messaging.datamodel.media;
+
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.drawable.Drawable;
+
+/**
+ * Base class for holding some form of image resource. The subclass gets to define the specific
+ * type of data format it's holding, whether it be Bitmap objects or compressed byte arrays.
+ */
+public abstract class ImageResource extends RefCountedMediaResource {
+    protected final int mOrientation;
+
+    public ImageResource(final String key, int orientation) {
+        super(key);
+        mOrientation = orientation;
+    }
+
+    /**
+     * Gets the contained image in drawable format.
+     */
+    public abstract Drawable getDrawable(Resources resources);
+
+    /**
+     * Gets the contained image in bitmap format.
+     */
+    public abstract Bitmap getBitmap();
+
+    /**
+     * Gets the contained image in byte array format.
+     */
+    public abstract byte[] getBytes();
+
+    /**
+     * Attempt to reuse the bitmap in the image resource and re-purpose it for something else.
+     * After this, the image resource will relinquish ownership on the bitmap resource so that
+     * it doesn't try to recycle it when getting closed.
+     */
+    public abstract Bitmap reuseBitmap();
+    public abstract boolean supportsBitmapReuse();
+
+    /**
+     * Gets the orientation of the image as one of the ExifInterface.ORIENTATION_* constants
+     */
+    public int getOrientation() {
+        return mOrientation;
+    }
+}