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      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      */
     38     public ImageDistributorOnImageAvailableListener(ImageReaderProxy imageReader,
     39             ImageDistributorImpl imageDistributor) {
     40         mImageDistributor = imageDistributor;
     41         mImageReader = imageReader;
     42     }
     43 
     44     @Override
     45     public void onImageAvailable() {
     46         ImageProxy nextImage = mImageReader.acquireNextImage();
     47         if (nextImage != null) {
     48             mImageDistributor.distributeImage(new SingleCloseImageProxy(nextImage));
     49         }
     50     }
     51 }
     52