f@0: /*  
f@0:  Cross-Modal DAW Prototype - Prototype of a simple Cross-Modal Digital Audio Workstation.
f@0: 
f@0:  Copyright (C) 2015  Queen Mary University of London (http://depic.eecs.qmul.ac.uk/)
f@0: 	
f@0:  This program is free software: you can redistribute it and/or modify
f@0:  it under the terms of the GNU General Public License as published by
f@0:  the Free Software Foundation, either version 3 of the License, or
f@0:  (at your option) any later version.
f@0: 
f@0:  This program is distributed in the hope that it will be useful,
f@0:  but WITHOUT ANY WARRANTY; without even the implied warranty of
f@0:  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
f@0:  GNU General Public License for more details.
f@0: 
f@0:  You should have received a copy of the GNU General Public License
f@0:  along with this program.  If not, see <http://www.gnu.org/licenses/>.
f@0: */
f@0: package uk.ac.qmul.eecs.depic.daw;
f@0: 
f@0: import uk.ac.qmul.eecs.depic.patterns.MathUtils;
f@0: import uk.ac.qmul.eecs.depic.patterns.Range;
f@0: 
f@1: /**
f@1:  * 
f@2:  * A Chunk is a set of contiguous audio samples. It is used in the visual representation of a sound wave where only the maximum 
f@1:  * and minimum values of all the samples are taken into account. In the sound wave a chuck would be drawn as a vertical
f@1:  * line at a specific x position, all the contiguous chunks make the sound wave as usually drawn.       
f@1:  *
f@1:  */
f@0: public class Chunk extends Range<Float> {
f@0: 	public static final Chunk SILENCE = new Chunk((short)0,(short)0);
f@0: 	private float normalizedStart;
f@0: 	private float normalizedEnd;
f@0: 	
f@0: 	public Chunk(Chunk chunk1, Chunk chunk2) {
f@0: 		super(chunk1, chunk2);
f@0: 		
f@0: 		normalizedStart = Math.min(chunk1.getNormStart(), chunk2.getNormStart());
f@0: 		normalizedEnd = Math.max(chunk1.getNormEnd(), chunk2.getNormEnd());
f@0: 	}
f@0: 
f@0: 	public Chunk(Short s1, Short s2) {
f@0: 		normalizedStart = (s1-Short.MIN_VALUE)/(float)domain();
f@0: 		normalizedEnd = (s2-Short.MIN_VALUE)/(float)domain();
f@0: 		
f@0: 		MathUtils.Scale scale = new MathUtils.Scale(0.0f, 1.0f, -1.0f, 1.0f);
f@0: 		start = scale.linear(normalizedStart);
f@0: 		end = scale.linear(normalizedEnd);
f@0: 	}
f@0: 
f@0: 	public static int domain() {
f@0: 		return Short.MAX_VALUE - Short.MIN_VALUE;
f@0: 	}
f@0: 	
f@0: 	public float getNormStart(){
f@0: 		return normalizedStart;
f@0: 	}
f@0: 	
f@0: 	public float getNormEnd(){
f@0: 		return normalizedEnd;
f@0: 	}
f@0: 	
f@0: 	@Override
f@0: 	public String toString(){
f@0: 		return "Chunk - range:["+getStart()+","+getEnd()+"]  normalized range ["+getNormStart()+","+getNormEnd()+"]" ;
f@0: 	}
f@0: }	
f@0: 	
f@0: