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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.async.BufferQueue;
     20 import com.android.camera.async.BufferQueueController;
     21 import com.android.camera.one.v2.camera2proxy.ImageProxy;
     22 
     23 import javax.annotation.ParametersAreNonnullByDefault;
     24 
     25 @ParametersAreNonnullByDefault
     26 public interface ImageDistributor {
     27     /**
     28      * Begins routing new images with timestamps matching those found in
     29      * inputTimestampQueue to outputStream.
     30      * <p>
     31      * The route is removed when either inputTimestampQueue is closed, or
     32      * outputStream is closed.
     33      * <p>
     34      * If multiple routes request the same image, they will both receive a
     35      * reference-counted "copy".
     36      *
     37      * @param inputTimestampQueue A queue containing timestamps of all images to
     38      *            be routed to outputStream.
     39      * @param outputStream The output queue in which to add images.
     40      */
     41     void addRoute(BufferQueue<Long> inputTimestampQueue,
     42             BufferQueueController<ImageProxy> outputStream);
     43 }
     44