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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.android.messaging.datamodel.media;
     17 
     18 import android.content.res.Resources;
     19 import android.graphics.Bitmap;
     20 import android.graphics.drawable.Drawable;
     21 
     22 /**
     23  * Base class for holding some form of image resource. The subclass gets to define the specific
     24  * type of data format it's holding, whether it be Bitmap objects or compressed byte arrays.
     25  */
     26 public abstract class ImageResource extends RefCountedMediaResource {
     27     protected final int mOrientation;
     28 
     29     public ImageResource(final String key, int orientation) {
     30         super(key);
     31         mOrientation = orientation;
     32     }
     33 
     34     /**
     35      * Gets the contained image in drawable format.
     36      */
     37     public abstract Drawable getDrawable(Resources resources);
     38 
     39     /**
     40      * Gets the contained image in bitmap format.
     41      */
     42     public abstract Bitmap getBitmap();
     43 
     44     /**
     45      * Gets the contained image in byte array format.
     46      */
     47     public abstract byte[] getBytes();
     48 
     49     /**
     50      * Attempt to reuse the bitmap in the image resource and re-purpose it for something else.
     51      * After this, the image resource will relinquish ownership on the bitmap resource so that
     52      * it doesn't try to recycle it when getting closed.
     53      */
     54     public abstract Bitmap reuseBitmap();
     55     public abstract boolean supportsBitmapReuse();
     56 
     57     /**
     58      * Gets the orientation of the image as one of the ExifInterface.ORIENTATION_* constants
     59      */
     60     public int getOrientation() {
     61         return mOrientation;
     62     }
     63 }
     64