package org.daisy.pipeline.audio;
   
   import java.io.File;
   import java.net.URI;
   import java.time.Duration;
   
   /**
    * Object that identifies a specific fragment in an audio file.
    */
  public final class AudioClip {
  
  	public final URI src;
  	public final Duration clipBegin;
  	public final Duration clipEnd;
  
  	public AudioClip(File src, Duration clipBegin, Duration clipEnd) {
  		this(src == null ? null : src.toURI(), clipBegin, clipEnd);
  	}
  
  	public AudioClip(URI src, Duration clipBegin, Duration clipEnd) {
  		if (clipBegin == null || clipEnd == null || src == null)
  			throw new NullPointerException();
  		if (clipBegin.compareTo(Duration.ZERO) < 0)
  			throw new IllegalArgumentException("Clip begin can not be negative");
  		if (clipEnd.compareTo(clipBegin) < 0)
  			throw new IllegalArgumentException("Clip end can not come before clip begin");
  		this.src = src;
  		this.clipBegin = clipBegin;
  		this.clipEnd = clipEnd;
  	}
  
  	@Override
  	public String toString() {
  		return "[src: " + src + ", clipBegin: " + clipBegin + ", clipEnd: " + clipEnd + "]";
  	}
  }