/**
    * 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.tools.imagecollection.collection.video.selection;
  
  import java.text.ParseException;
  
  import org.openimaj.image.MBFImage;
  import org.openimaj.tools.imagecollection.collection.ImageCollectionEntrySelection;
  import org.openimaj.tools.imagecollection.collection.config.ImageCollectionConfig;
  import org.openimaj.video.xuggle.XuggleVideo;
  
  public abstract class XuggleVideoFrameSelection implements ImageCollectionEntrySelection<MBFImage> {
  	public static class Proxy extends XuggleVideoFrameSelection {
  		private ImageCollectionEntrySelection<MBFImage> proxy;
  
  		public Proxy(ImageCollectionEntrySelection<MBFImage> proxy) {
  			this.proxy = proxy;
  		}
  		
  		@Override
  		public boolean acceptEntry(MBFImage image){
  			return proxy.acceptEntry(image);
  		}
  	}
  	public XuggleVideoFrameSelection(ImageCollectionConfig config){
  		
  	}
  	
  	public XuggleVideoFrameSelection() {
  	}
  
  	@Override
  	public boolean acceptEntry(MBFImage image){
  		return true;
  	}
  
  	public void init(XuggleVideo video){
  		
  	}
  	public static class All extends XuggleVideoFrameSelection{
  
  		public All(ImageCollectionConfig config) {
  			super(config);
  		}
  	}
  	
  	public static class FramesPerSecond extends XuggleVideoFrameSelection{
  
  		private Integer framesPerSecond;
  		private int framesToSkip;
  		private int framesCount;
  
  		public FramesPerSecond(ImageCollectionConfig config) throws ParseException {
  			super(config);
  			this.framesPerSecond = config.read("video.framespersecond");
  			if(this.framesPerSecond  == null){
  				this.framesPerSecond = 2;
  			}
  		}
  		
  		@Override
  		public void init(XuggleVideo video){
  			this.framesToSkip = (int) (video.getFPS() / this.framesPerSecond);
  			if(this.framesToSkip < 1) this.framesToSkip = 1;
  			this.framesCount = 0;
  		}
  		
  		@Override
  		public boolean acceptEntry(MBFImage image){
  			boolean good = (this.framesCount % this.framesToSkip) == 0;
  			this.framesCount++;
  			return good;
 		}
 	}
 	
 	private enum Styles{
 		ALL {
 			@Override
 			public XuggleVideoFrameSelection style(ImageCollectionConfig config) {
 				return new XuggleVideoFrameSelection.All(config);
 			}
 		},FRAMESPERSECOND {
 			@Override
 			public XuggleVideoFrameSelection style(ImageCollectionConfig config) throws ParseException {
 				return new XuggleVideoFrameSelection.FramesPerSecond(config);
 			}
 		}
 //		,KEYFRAMES {
 //			@Override
 //			public FrameStyle style(ImageCollectionConfig config) {
 //				return new FrameStyle.KeyFrames(config);
 //			}
 //		}
 		;
 		public abstract XuggleVideoFrameSelection style(ImageCollectionConfig config) throws ParseException;
 	}
 	public static XuggleVideoFrameSelection byName(String read,ImageCollectionConfig config) throws ParseException {
 		return Styles.valueOf(read).style(config);
 	}
 
 }