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.Context; 19 20 import java.io.FileNotFoundException; 21 import java.io.IOException; 22 import java.io.InputStream; 23 import java.util.List; 24 25 /** 26 * Serves local content URI based image requests. 27 */ 28 public class UriImageRequest<D extends UriImageRequestDescriptor> extends ImageRequest<D> { 29 public UriImageRequest(final Context context, final D descriptor) { 30 super(context, descriptor); 31 } 32 33 @Override 34 protected InputStream getInputStreamForResource() throws FileNotFoundException { 35 return mContext.getContentResolver().openInputStream(mDescriptor.uri); 36 } 37 38 @Override 39 protected ImageResource loadMediaInternal(List<MediaRequest<ImageResource>> chainedTasks) 40 throws IOException { 41 final ImageResource resource = super.loadMediaInternal(chainedTasks); 42 // Check if the caller asked for compression. If so, chain an encoding task if possible. 43 if (mDescriptor.allowCompression && chainedTasks != null) { 44 @SuppressWarnings("unchecked") 45 final MediaRequest<ImageResource> chainedTask = (MediaRequest<ImageResource>) 46 resource.getMediaEncodingRequest(this); 47 if (chainedTask != null) { 48 chainedTasks.add(chainedTask); 49 // Don't cache decoded image resource since we'll perform compression and cache 50 // the compressed resource. 51 if (resource instanceof DecodedImageResource) { 52 ((DecodedImageResource) resource).setCacheable(false); 53 } 54 } 55 } 56 return resource; 57 } 58 } 59
