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.referencesound;
f@0: 
f@0: import net.beadsproject.beads.core.AudioContext;
f@0: import net.beadsproject.beads.core.Bead;
f@0: import net.beadsproject.beads.core.UGen;
f@0: import net.beadsproject.beads.data.Buffer;
f@0: import net.beadsproject.beads.ugens.Envelope;
f@0: import net.beadsproject.beads.ugens.Gain;
f@0: import net.beadsproject.beads.ugens.WavePlayer;
f@0: import uk.ac.qmul.eecs.depic.patterns.Range;
f@0: import uk.ac.qmul.eecs.depic.patterns.Sequence;
f@0: 
f@0: /**
f@0:  * Implements a sequence mapping using beads engine and simple wave tables ugens 
f@0:  * 
f@0:  *
f@0:  */
f@0: class BeadsWaveTableSequenceMapping extends BeadsSequenceMapping { 
f@0: 	private Range<Float> renderCurvePitchSpan;
f@0: 	private Range<Float> renderValuePitchSpan;
f@0: 	private static final float ATTACK_TIME_MS = 5.0f;
f@0: 	
f@0: 	static {
f@0: 		/* loads the buffer for the PeakLevelPitchedUgen and stores it into staticBuffs */
f@0: 		int bufferLen = 4096;
f@0: 		Buffer pulse = new Buffer(bufferLen);
f@0: 		int pulseWidth = bufferLen/10;
f@0: 		
f@0: 		for(int i=0; i<pulseWidth;i++){
f@0: 			pulse.buf[i] = 1.0f;
f@0: 		}
f@0: 		
f@0: 		for(int i=pulseWidth; i<bufferLen; i++){
f@0: 			pulse.buf[i] = -1.0f;
f@0: 		}
f@0: 		
f@0: 		Buffer.staticBufs.put("Pulse", pulse);
f@0: 	}
f@0: 
f@0: 	public BeadsWaveTableSequenceMapping(AudioContext ac, Range<Float> curvePitchSpan, Range<Float> valuePitchSpan){
f@0: 		super(ac);
f@0: 		renderCurvePitchSpan = curvePitchSpan;
f@0: 		renderValuePitchSpan = valuePitchSpan;
f@0: 	}
f@0: 	
f@0: 	@Override
f@0: 	protected PitchedUGen createRenderValueUGen(){
f@0: 		return new BufferPitchedUGen(ac, renderValuePitchSpan, Buffer.SINE);
f@0: 	}
f@0: 	
f@0: 	@Override
f@0: 	protected PitchedUGen createRenderCurveUGen(){
f@0: 		return new BufferPitchedUGen(ac, renderCurvePitchSpan, Buffer.SINE);
f@0: 	}
f@0: 	
f@0: 
f@0: 	@Override
f@0: 	protected Range<Float> getRenderValuePitchSpan() {
f@0: 		return renderValuePitchSpan;
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	protected Range<Float> getRenderCurvePitchSpan() {
f@0: 		return renderCurvePitchSpan;
f@0: 	}
f@0: 	
f@0: 	private class BufferPitchedUGen extends PitchedUGen {
f@0: 		private Gain gain;
f@0: 		private WavePlayer player;
f@0: 		private float maxFreq;
f@0: 		private float minFreq;
f@0: 		private Envelope env;
f@0: 		
f@0: 		/**
f@0: 		 * 
f@0: 		 * Pulse TriangularBuffer Square  Saw Noise Sine
f@0: 		 * 
f@0: 		 * @param ac
f@0: 		 * @param pitchSpan
f@0: 		 * @param buffer
f@0: 		 */
f@0: 		public BufferPitchedUGen(AudioContext ac, Range<Float> pitchSpan, Buffer buffer) {
f@0: 			super(ac);
f@0: 			if(maxFreq < minFreq){
f@0: 				throw new IllegalArgumentException("minFreq must be lower than maxFreq. minFreq: "+minFreq+" maxFreq:"+maxFreq );
f@0: 			}
f@0: 			
f@0: 			this.minFreq = pitchSpan.getStart();
f@0: 			this.maxFreq = pitchSpan.getEnd();
f@0: 			gain = new Gain(ac, 1, 0.5f);
f@0: 			player = new WavePlayer(ac,minFreq,buffer);
f@0: 			
f@0: 			gain.addInput(player);
f@0: 			
f@0: 			addToChainOutput(gain);
f@0: 		}
f@0: 		
f@0: 		@Override
f@0: 		public void setPitch(float pitch){
f@0: 			/* set the frequency for both the actual curve sound and the threshold sound */
f@0: 			player.setFrequency(pitch);
f@0: 			
f@0: 		}
f@0: 		
f@0: 		@Override
f@0: 		public void setPitch(UGen pitch) {
f@0: 			player.setFrequency(pitch);
f@0: 		}
f@0: 		
f@0: 		public float getFrequency(float freq){
f@0: 			return player.getFrequency();
f@0: 		}
f@0: 		
f@0: 		@Override
f@0: 		public void start(){
f@0: 			player.start();
f@0: 		}
f@0: 		
f@0: 			
f@0: 		@Override
f@0: 		public void setLen(float sustainValue, float decayTime){
f@0: 			/* if decayTime is long enough, smooth out the attack to avoid glitchy sound */
f@0: 			if(Float.compare(decayTime,ATTACK_TIME_MS) > 0){
f@0: 				env = new Envelope(context,0.0f); // starts from 0
f@0: 				env.addSegment(sustainValue,ATTACK_TIME_MS,2); // attack
f@0: 				env.addSegment(0.0f,decayTime-ATTACK_TIME_MS, this);  // decay
f@0: 			}else{
f@0: 				env = new Envelope(context,sustainValue);
f@0: 				env.addSegment(0.0f, decayTime, this); // decay
f@0: 			}
f@0: 			gain.setGain(env);
f@0: 		}
f@0: 		
f@0: 		@Override
f@0: 		public void addLen(float sustainValue, float duration, final Bead bead){
f@0: 			if(env == null){
f@0: 				if(Float.compare(duration,ATTACK_TIME_MS) > 0){
f@0: 					env = new Envelope(context,0.0f); // starts from 0
f@0: 					env.addSegment(sustainValue,ATTACK_TIME_MS,2); // attack
f@0: 					env.addSegment(sustainValue,duration-ATTACK_TIME_MS, bead);  // decay
f@0: 				}else{
f@0: 					env = new Envelope(context,sustainValue);
f@0: 					env.addSegment(0.0f, duration, bead); // decay
f@0: 				}			
f@0: 				gain.setGain(env);
f@0: 			}else{	
f@0: 				env.addSegment(sustainValue,duration, bead);
f@0: 			}
f@0: 			
f@0: 		}
f@0: 		
f@0: 		@Override
f@0: 		public void addLen(float sustainValue, float duration ){
f@0: 			if(env == null){
f@0: 				if(Float.compare(duration,ATTACK_TIME_MS) > 0){
f@0: 					env = new Envelope(context,0.0f); // starts from 0
f@0: 					env.addSegment(sustainValue,ATTACK_TIME_MS,2); // attack
f@0: 					env.addSegment(sustainValue,duration-ATTACK_TIME_MS, this);  // decay
f@0: 				}else{
f@0: 					env = new Envelope(context,sustainValue);
f@0: 					env.addSegment(sustainValue, duration, this); // decay
f@0: 				}			
f@0: 				gain.setGain(env);
f@0: 			}else{
f@0: 				env.addSegment(0.0f,duration, this);
f@0: 			}
f@0: 			
f@0: 		}
f@0: 		
f@0: 		@Override
f@0: 		public void messageReceived(Bead b){
f@0: 			kill();
f@0: 		}
f@0: 		
f@0: 	}
f@0: 
f@0: 	@Override
f@0: 	public void renderCurve(Sequence m, float startTime) {
f@0: 		throw new UnsupportedOperationException();
f@0: 	}
f@0: };;