1 /*
2  * Copyright (C) 2014 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 
17 package com.android.camera.one.v2.sharedimagereader.imagedistributor;
18 
19 import com.android.camera.one.v2.camera2proxy.ImageProxy;
20 import com.android.camera.one.v2.camera2proxy.ImageReaderProxy;
21 
22 import javax.annotation.ParametersAreNonnullByDefault;
23 
24 /**
25  * Connects an {@link ImageReaderProxy} to an {@link ImageDistributor} with a
26  * new thread to handle image availability callbacks.
27  */
28 @ParametersAreNonnullByDefault
29 class ImageDistributorOnImageAvailableListener implements
30         ImageReaderProxy.OnImageAvailableListener {
31     private final ImageDistributorImpl mImageDistributor;
32     private final ImageReaderProxy mImageReader;
33 
34     /**
35      * @param imageReader The image reader to retrieve images from.
36      * @param imageDistributor The image distributor to send images to.
37      */
ImageDistributorOnImageAvailableListener(ImageReaderProxy imageReader, ImageDistributorImpl imageDistributor)38     public ImageDistributorOnImageAvailableListener(ImageReaderProxy imageReader,
39             ImageDistributorImpl imageDistributor) {
40         mImageDistributor = imageDistributor;
41         mImageReader = imageReader;
42     }
43 
44     @Override
onImageAvailable()45     public void onImageAvailable() {
46         ImageProxy nextImage = mImageReader.acquireNextImage();
47         if (nextImage != null) {
48             mImageDistributor.distributeImage(new SingleCloseImageProxy(nextImage));
49         }
50     }
51 }
52