/**
    * Copyright (c) 2011, The University of Southampton and the individual contributors.
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms, with or without modification,
    * are permitted provided that the following conditions are met:
    *
    *   * 	Redistributions of source code must retain the above copyright notice,
    * 	this list of conditions and the following disclaimer.
   *
   *   *	Redistributions in binary form must reproduce the above copyright notice,
   * 	this list of conditions and the following disclaimer in the documentation
   * 	and/or other materials provided with the distribution.
   *
   *   *	Neither the name of the University of Southampton nor the names of its
   * 	contributors may be used to endorse or promote products derived from this
   * 	software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
   * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  package org.openimaj.image.neardups.sim;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.util.Iterator;
  
  import javax.imageio.IIOImage;
  import javax.imageio.ImageIO;
  import javax.imageio.ImageWriteParam;
  import javax.imageio.ImageWriter;
  import javax.imageio.stream.MemoryCacheImageOutputStream;
  
  import org.openimaj.image.ImageUtilities;
  import org.openimaj.image.MBFImage;
  
  
  public class CompressSimulation extends Simulation {
  	protected float minCompression = 0.1f;
  	protected float maxCompression = 1f;
  	
  	public CompressSimulation(int seed) {
  		super(seed);
  	}
  	
  	public CompressSimulation(int seed, float minCompression, float maxCompression) {
  		super(seed);
  		this.maxCompression = maxCompression;
  		this.minCompression = minCompression;
  	}
  
  	@Override
  	public MBFImage applySimulation(MBFImage input) {
  		try {
  			Iterator<ImageWriter> iter = ImageIO.getImageWritersByFormatName("jpeg");
  			ImageWriter writer = iter.next();
  			ImageWriteParam iwp = writer.getDefaultWriteParam();
  			iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
  			
  			float compressionFactor = this.randomFloatInRange(minCompression, maxCompression);
  			
  			iwp.setCompressionQuality(compressionFactor);
  
  			ByteArrayOutputStream output = new ByteArrayOutputStream();
  			writer.setOutput(new MemoryCacheImageOutputStream(output));
  			
  			IIOImage image = new IIOImage(ImageUtilities.createBufferedImage(input), null, null);
  			writer.write(null, image, iwp);
  			
  			return ImageUtilities.readMBF(new ByteArrayInputStream(output.toByteArray()));
  		} catch (IOException e) {
  			throw new Error(e);
  		}
  	}
  
  }