/**
 *                    
 * @author greg (at) myrobotlab.org
 *  
 * This file is part of MyRobotLab (http://myrobotlab.org).
 *
 * MyRobotLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version (subject to the "Classpath" exception
 * as provided in the LICENSE.txt file that accompanied this code).
 *
 * MyRobotLab is distributed in the hope that it will be useful or fun,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * All libraries in thirdParty bundle are subject to their own license
 * requirements - please refer to http://myrobotlab.org/libraries for 
 * details.
 * 
 * Enjoy !
 * 
 * */

package org.myrobotlab.opencv;

import static org.bytedeco.javacpp.opencv_core.cvCopy;
import static org.bytedeco.javacpp.opencv_core.cvZero;

import org.bytedeco.javacpp.opencv_core.IplImage;
import org.myrobotlab.logging.LoggerFactory;
import org.slf4j.Logger;

public class OpenCVFilterAddAlpha extends OpenCVFilter {

  private static final long serialVersionUID = 1L;

  public final static Logger log = LoggerFactory.getLogger(OpenCVFilterAddAlpha.class.getCanonicalName());
  public String sourceName;

  transient IplImage dst = null;
  transient IplImage negativeImage = null;

  public OpenCVFilterAddAlpha() {
    super();
  }

  public OpenCVFilterAddAlpha(String name) {
    super(name);
  }

  @Override
  public void imageChanged(IplImage image) {
    dst = null;
  }

  @Override
  public IplImage process(IplImage image, OpenCVData data) throws InterruptedException {

    // cvAnd (src1, src2, dst, mask)
    // f'ing rocks ! -
    // http://www.neuroforge.co.uk/index.php/masking-colour-images
    if (sourceName != null) {
      // INFO - This filter has 2 keys !!!
      IplImage src = vp.sources.get(String.format("%s.%s", vp.boundServiceName, sourceName));
      if (src != null) {
        if (dst == null) {
          dst = src.clone();
        }
        cvZero(dst);
        cvCopy(src, dst, image);
      }
      return dst;
    } else {
      return image;
    }

  }

}