/**
    * 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.content.slideshow;
  
  import java.awt.Component;
  import java.awt.Dimension;
  import java.awt.event.KeyEvent;
  import java.awt.event.KeyListener;
  import java.awt.image.BufferedImage;
  import java.io.File;
  import java.io.IOException;
  import java.net.URL;
  
  import org.apache.commons.io.FileUtils;
  import org.openimaj.image.DisplayUtilities.ImageComponent;
  import org.openimaj.image.ImageUtilities;
  import org.openimaj.image.MBFImage;
  import org.openimaj.image.processing.transform.MBFProjectionProcessor;
  import org.openimaj.video.VideoDisplay;
  import org.openimaj.video.VideoDisplay.EndAction;
  import org.openimaj.video.VideoDisplayListener;
  import org.openimaj.video.xuggle.XuggleVideo;
  
  import Jama.Matrix;
  
  /**
   * Slide that shows a video. Number keys are bound to seek to different points
   * in the video.
   *
   * @author Sina Samangooei (ss@ecs.soton.ac.uk)
   *
   */
  public class VideoSlide implements Slide, VideoDisplayListener<MBFImage>, KeyListener {
  	URL url;
  	VideoDisplay<MBFImage> display;
  	private URL background;
  	protected PictureSlide pictureSlide;
  	private final Matrix transform;
  	private ImageComponent panel;
  	private BufferedImage bimg;
  	private MBFImage mbfImage;
  	private XuggleVideo video;
  	private EndAction endAction = EndAction.LOOP;
  
  	/**
  	 * Default constructor.
  	 *
  	 * @param video
  	 * @param background
  	 * @param transform
  	 * @param endAction
  	 * @throws IOException
  	 */
  	public VideoSlide(final URL video, final URL background, final Matrix transform, EndAction endAction)
  			throws IOException
  	{
  		this.url = makeURL(video);
  		this.background = background;
  		this.pictureSlide = new PictureSlide(this.background);
  		this.transform = transform;
  		this.endAction = endAction;
  	}
  
  	/**
  	 * Default constructor.
  	 *
  	 * @param video
  	 * @param transform
  	 * @param endAction
  	 * @throws IOException
  	 */
  	public VideoSlide(final URL video, final Matrix transform, EndAction endAction) throws IOException {
 		this.url = makeURL(video);
 		this.transform = transform;
 		this.endAction = endAction;
 	}
 
 	private URL makeURL(URL url) throws IOException {
 		if (url.getProtocol().startsWith("jar")) {
 			final File tmp = File.createTempFile("movie", ".tmp");
 			tmp.deleteOnExit();
 			FileUtils.copyURLToFile(url, tmp);
 			url = tmp.toURI().toURL();
 		}
 		return url;
 	}
 
 	/**
 	 * Default constructor.
 	 *
 	 * @param video
 	 * @param background
 	 * @param endAction
 	 * @throws IOException
 	 */
 	public VideoSlide(final URL video, final URL background, EndAction endAction) throws IOException {
 		this(video, background, null, endAction);
 	}
 
 	@Override
 	public Component getComponent(final int width, final int height) throws IOException {
 		if (this.pictureSlide == null) {
 			this.mbfImage = new MBFImage(width, height, 3);
 			this.panel = (ImageComponent) new PictureSlide(this.mbfImage).getComponent(width, height);
 		}
 		else {
 			this.panel = (ImageComponent) this.pictureSlide.getComponent(width, height);
 			this.mbfImage = this.pictureSlide.mbfImage.clone();
 		}
 
 		this.panel.setSize(width, height);
 		this.panel.setPreferredSize(new Dimension(width, height));
 
 		this.video = new XuggleVideo(this.url, false);
 		this.display = VideoDisplay.createOffscreenVideoDisplay(this.video);
 		this.display.setEndAction(this.endAction);
 
 		this.display.addVideoListener(this);
 
 		return this.panel;
 	}
 
 	@Override
 	public void close() {
 		this.display.close();
 	}
 
 	@Override
 	public void afterUpdate(final VideoDisplay<MBFImage> display) {
 		// do nothing
 	}
 
 	@Override
 	public void beforeUpdate(final MBFImage frame) {
 		if (this.transform != null) {
 			final MBFImage bgCopy = this.mbfImage.clone();
 			final MBFProjectionProcessor proj = new MBFProjectionProcessor();
 			proj.setMatrix(this.transform);
 			proj.accumulate(frame);
 			proj.performProjection(0, 0, bgCopy);
 			this.panel.setImage(this.bimg = ImageUtilities.createBufferedImageForDisplay(bgCopy, this.bimg));
 		}
 		else
 			this.panel.setImage(this.bimg = ImageUtilities.createBufferedImageForDisplay(frame, this.bimg));
 	}
 
 	@Override
 	public void keyPressed(final KeyEvent key) {
 		final int code = key.getKeyCode();
 		if (code >= KeyEvent.VK_0 && code <= KeyEvent.VK_9) {
 			final double prop = (code - KeyEvent.VK_0) / 10.0;
 			final long dur = this.video.getDuration();
 			this.display.seek((long) (dur * prop));
 		}
 		if (code == KeyEvent.VK_SPACE) {
 			this.display.togglePause();
 		}
 	}
 
 	@Override
 	public void keyReleased(final KeyEvent arg0) {
 		// do nothing
 	}
 
 	@Override
 	public void keyTyped(final KeyEvent arg0) {
 		// do nothing
 	}
 }