content: /*
   * Copyright (C) 2014 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.android.ex.camera2.utils;
  
  import android.hardware.camera2.CameraCaptureSession;
  import android.hardware.camera2.CameraCaptureSession.CaptureCallback;
  import android.hardware.camera2.CaptureFailure;
  import android.hardware.camera2.CaptureRequest;
  import android.hardware.camera2.CaptureResult;
  import android.hardware.camera2.TotalCaptureResult;
  
  import java.util.Arrays;
  import java.util.LinkedList;
  import java.util.List;
  
  /**
   * Junction that allows notifying multiple {@link CaptureCallback}s whenever
   * the {@link CameraCaptureSession} posts a capture-related update.
   */
  public class Camera2CaptureCallbackSplitter extends CaptureCallback {
      private final List<CaptureCallback> mRecipients = new LinkedList<>();
  
      /**
       * @param recipients The listeners to notify. Any {@code null} passed here
       *                   will be completely ignored.
       */
      public Camera2CaptureCallbackSplitter(CaptureCallback... recipients) {
          for (CaptureCallback listener : recipients) {
              if (listener != null) {
                  mRecipients.add(listener);
              }
          }
      }
  
      @Override
      public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request,
                                     TotalCaptureResult result) {
          for (CaptureCallback target : mRecipients) {
              target.onCaptureCompleted(session, request, result);
          }
      }
  
      @Override
      public void onCaptureFailed(CameraCaptureSession session, CaptureRequest request,
                                  CaptureFailure failure) {
          for (CaptureCallback target : mRecipients) {
              target.onCaptureFailed(session, request, failure);
          }
      }
  
      @Override
      public void onCaptureProgressed(CameraCaptureSession session, CaptureRequest request,
                                      CaptureResult partialResult) {
          for (CaptureCallback target : mRecipients) {
              target.onCaptureProgressed(session, request, partialResult);
          }
      }
  
      @Override
      public void onCaptureSequenceAborted(CameraCaptureSession session, int sequenceId) {
          for (CaptureCallback target : mRecipients) {
              target.onCaptureSequenceAborted(session, sequenceId);
          }
      }
  
      @Override
      public void onCaptureSequenceCompleted(CameraCaptureSession session, int sequenceId,
                                             long frameNumber) {
          for (CaptureCallback target : mRecipients) {
              target.onCaptureSequenceCompleted(session, sequenceId, frameNumber);
          }
      }
  
      @Override
      public void onCaptureStarted(CameraCaptureSession session, CaptureRequest request,
                                   long timestamp, long frameNumber) {
          for (CaptureCallback target : mRecipients) {
              target.onCaptureStarted(session, request, timestamp, frameNumber);
          }
      }
  }
  