content: /*
   * Copyright (C) 2010 ZXing authors
   *
   * 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.google.zxing.camera;
  
  import android.graphics.Point;
  import android.hardware.Camera;
  import android.os.Handler;
  import android.os.Message;
  import android.util.Log;
  
  public class PreviewCallback implements Camera.PreviewCallback {
  
  	private static final String TAG = PreviewCallback.class.getSimpleName();
  
  	private final CameraConfigurationManager configManager;
  	private Handler previewHandler;
  	private int previewMessage;
  
  	public PreviewCallback(CameraConfigurationManager configManager) {
  		this.configManager = configManager;
  	}
  
  	public void setHandler(Handler previewHandler, int previewMessage) {
  		this.previewHandler = previewHandler;
  		this.previewMessage = previewMessage;
  	}
  
  	@Override
  	public void onPreviewFrame(byte[] data, Camera camera) {
  		Point cameraResolution = configManager.getCameraResolution();
  		Handler thePreviewHandler = previewHandler;
  		if (cameraResolution != null && thePreviewHandler != null) {
  			Message message = thePreviewHandler.obtainMessage(previewMessage, cameraResolution.x, cameraResolution.y, data);
  			message.sendToTarget();
  			previewHandler = null;
  		} else {
  			Log.d(TAG, "Got preview callback, but no handler or resolution available");
  		}
  	}
  
  }
  