ImageDistributorOnImageAvailableListener.java revision 1738db31add0aea5a6a6f2c137ca6fc476a10237 
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
17package com.android.camera.one.v2.sharedimagereader.imagedistributor;
18
19import com.android.camera.one.v2.camera2proxy.ImageProxy;
20import com.android.camera.one.v2.camera2proxy.ImageReaderProxy;
21
22import 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
29class 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