andrew@0: /*
andrew@0:  *  AudioAnalysis.cpp
andrew@0:  *  audioFileLoader4
andrew@0:  *
andrew@0:  *  Created by Andrew on 14/08/2011.
andrew@0:  *  Copyright 2011 QMUL. All rights reserved.
andrew@0:  *
andrew@0:  */
andrew@0: 
andrew@0: #include "AudioAnalysis.h"
andrew@0: 
andrew@0: 
andrew@1: AudioAnalysis::AudioAnalysis(){
andrew@1: 	chromoGramm.initialise(FRAMESIZE,2048);
andrew@1: 
andrew@1: 	scrollWidth = 1600;
andrew@1: 	
andrew@1: }
andrew@1: 
andrew@1: 
andrew@1: 
andrew@1: void AudioAnalysis::drawEnergyVectorFromPointer(){
andrew@1: 	DoubleVector* energyVec;
andrew@1: 	energyVec = &energyVector;
andrew@1: 	//xxx above
andrew@1: 	
andrew@1: 	ofSetColor(0xFF0066);
andrew@1: 	float screenHeight = ofGetHeight() ;
andrew@1: 	float screenWidth = ofGetWidth();  
andrew@1: 	float heightFactor = 8;
andrew@1: 	int i, j, startingFrame;
andrew@1: 	startingFrame = currentPlayingFrame / scrollWidth;//i.e. number of scroll widths in
andrew@1: 	startingFrame *= scrollWidth;
andrew@1: 	
andrew@1: 	for (i = 0; i < scrollWidth - 1; i++){
andrew@1: 		j = i + startingFrame;
andrew@1: 		if (j < (*energyVec).size())
andrew@1: 			ofLine(i*screenWidth/scrollWidth, screenHeight - ((*energyVec)[j]*screenHeight/heightFactor),
andrew@1: 				   screenWidth*(i+1)/scrollWidth, screenHeight - ((*energyVec)[j+1]*screenHeight/heightFactor));
andrew@1: 		
andrew@1: 	}
andrew@1: }
andrew@1: 
andrew@1: void AudioAnalysis::drawSpectralDifference(){
andrew@1: 	DoubleMatrix* dMatrix;
andrew@1: 	dMatrix = &chromaMatrix;
andrew@1: 	//get rid of these!
andrew@1: 	
andrew@1: 	int matrixSize = (*dMatrix).size();
andrew@1: 	if (matrixSize > 0){
andrew@1: 		
andrew@1: 		float screenHeight = ofGetHeight() ;
andrew@1: 		float screenWidth = ofGetWidth();
andrew@1: 		float heightFactor = 8;
andrew@1: 		double difference;
andrew@1: 		int i, j, startingFrame;
andrew@1: 		startingFrame = currentPlayingFrame / scrollWidth;//i.e. number of scroll widths in
andrew@1: 		startingFrame *= scrollWidth;//starting frame in terms of energy frames
andrew@1: 		startingFrame /= CHROMA_CONVERSION_FACTOR; //in terms of chroma frames
andrew@1: 		
andrew@1: 		float chromoLength = scrollWidth/CHROMA_CONVERSION_FACTOR;
andrew@1: 		for (i = 1; i < chromoLength; i++){//changed to add 1
andrew@1: 			j = i + startingFrame;
andrew@1: 			for (int y = 0;y < 12;y++){			
andrew@1: 				
andrew@1: 				if (j < matrixSize)
andrew@1: 					difference = (*dMatrix)[j][11-y] - (*dMatrix)[j-1][11-y];
andrew@1: 				else 
andrew@1: 					difference = 0;
andrew@1: 				
andrew@1: 				if (difference < 0)
andrew@1: 					difference = 0;//half wave rectify
andrew@1: 				
andrew@1: 				ofSetColor(0,0,255 * difference);//, 0;
andrew@1: 				ofRect(i*screenWidth/chromoLength,y*screenHeight/12,screenWidth/chromoLength,screenHeight/12);
andrew@1: 			}//end y
andrew@1: 		}//end i
andrew@1: 		
andrew@1: 	}///end if matrix has content
andrew@1: 	else{
andrew@1: 		printf("Error - please load audio first");
andrew@1: 	}
andrew@1: 	
andrew@1: }
andrew@1: 
andrew@1: 
andrew@0: /*
andrew@0: void testApp::initialiseVariables(){
andrew@0: 	
andrew@0: 	energyIndex = 0;
andrew@0: 	//	frameIndex = 0;
andrew@0: 	chromaIndex = 0;
andrew@0: 	chromoGramm.initialise(FRAMESIZE,2048);//framesize 512 and hopsize 2048
andrew@0: }
andrew@0: 
andrew@0: 
andrew@0: //--------------------------------------------------------------
andrew@0: void testApp::draw(){
andrew@0: 	switch (screenToDraw){
andrew@0: 		case 0:
andrew@0: 			if (drawSpectralDifferenceFunction)
andrew@0: 				drawSpectralDifference(&chromaMatrix);
andrew@0: 			else
andrew@0: 				drawDoubleMatrix(&chromaMatrix);
andrew@0: 			
andrew@0: 			drawEnergyVectorFromPointer(&firstEnergyVector);
andrew@0: 			break;
andrew@0: 		case 1:
andrew@0: 			//	audioHolder.drawAudioVectorMillis(1000, 1000+audioScale);
andrew@0: 			audioHolder.drawAudioVectorSamples(audioHolder.playPosition, audioHolder.playPosition+audioHolder.audioScaleSamples);
andrew@0: 			break;
andrew@0: 	}
andrew@0: 	
andrew@0: 	
andrew@0: 	
andrew@0: 	//ofSetColor(255,0,0);
andrew@0: 	//drawEnergyVectorFromPointer(&audioVector);
andrew@0: 	
andrew@0: 	ofSetColor(0xFFFFFF);
andrew@0: 	ofLine(audioPosition*width, 0, audioPosition*width, height);
andrew@0: 	
andrew@0: 	ofDrawBitmapString(soundFileName,80,480);
andrew@0: 	
andrew@0: }
andrew@0: 
andrew@0: 
andrew@0: void testApp::drawEnergyVectorFromPointer(DoubleVector* energyVec){
andrew@0: 	
andrew@0: 	ofSetColor(0xFF0066);
andrew@0: 	float screenHeight = ofGetHeight() ;
andrew@0: 	float screenWidth = ofGetWidth();  
andrew@0: 	float heightFactor = 8;
andrew@0: 	int i, j, startingFrame;
andrew@0: 	startingFrame = currentPlayingFrame / scrollWidth;//i.e. number of scroll widths in
andrew@0: 	startingFrame *= scrollWidth;
andrew@0: 	
andrew@0: 	for (i = 0; i < scrollWidth - 1; i++){
andrew@0: 		j = i + startingFrame;
andrew@0: 		if (j < (*energyVec).size())
andrew@0: 			ofLine(i*screenWidth/scrollWidth, screenHeight - ((*energyVec)[j]*screenHeight/heightFactor),
andrew@0: 				   screenWidth*(i+1)/scrollWidth, screenHeight - ((*energyVec)[j+1]*screenHeight/heightFactor));
andrew@0: 		
andrew@0: 	}
andrew@0: }
andrew@0: 
andrew@0: void testApp::drawSpectralDifference(DoubleMatrix* dMatrix){
andrew@0: 	int matrixSize = (*dMatrix).size();
andrew@0: 	if (matrixSize > 0){
andrew@0: 		
andrew@0: 		float screenHeight = ofGetHeight() ;
andrew@0: 		float screenWidth = ofGetWidth();
andrew@0: 		float heightFactor = 8;
andrew@0: 		double difference;
andrew@0: 		int i, j, startingFrame;
andrew@0: 		startingFrame = currentPlayingFrame / scrollWidth;//i.e. number of scroll widths in
andrew@0: 		startingFrame *= scrollWidth;//starting frame in terms of energy frames
andrew@0: 		startingFrame /= CHROMA_CONVERSION_FACTOR; //in terms of chroma frames
andrew@0: 		
andrew@0: 		float chromoLength = scrollWidth/CHROMA_CONVERSION_FACTOR;
andrew@0: 		for (i = 1; i < chromoLength; i++){//changed to add 1
andrew@0: 			j = i + startingFrame;
andrew@0: 			for (int y = 0;y < 12;y++){			
andrew@0: 				
andrew@0: 				if (j < matrixSize)
andrew@0: 					difference = (*dMatrix)[j][11-y] - (*dMatrix)[j-1][11-y];
andrew@0: 				else 
andrew@0: 					difference = 0;
andrew@0: 				
andrew@0: 				if (difference < 0)
andrew@0: 					difference = 0;//half wave rectify
andrew@0: 				
andrew@0: 				ofSetColor(0,0,255 * difference);//, 0;
andrew@0: 				ofRect(i*screenWidth/chromoLength,y*screenHeight/12,screenWidth/chromoLength,screenHeight/12);
andrew@0: 			}//end y
andrew@0: 		}//end i
andrew@0: 		
andrew@0: 	}///end if matrix has content
andrew@0: 	else{
andrew@0: 		printf("Error - please load audio first");
andrew@0: 	}
andrew@0: 	
andrew@0: }
andrew@0: 
andrew@0: 
andrew@0: void testApp::drawDoubleMatrix(DoubleMatrix* dMatrix){
andrew@0: 	//used to draw the chromagram matrix
andrew@0: 	int matrixSize = (*dMatrix).size();
andrew@0: 	if (matrixSize > 0){
andrew@0: 		
andrew@0: 		float screenHeight = ofGetHeight() ;
andrew@0: 		float screenWidth = ofGetWidth();
andrew@0: 		float heightFactor = 8;
andrew@0: 		int i, j, startingFrame;
andrew@0: 		startingFrame = currentPlayingFrame / scrollWidth;//i.e. number of scroll widths in
andrew@0: 		startingFrame *= scrollWidth;//starting frame in terms of energy frames
andrew@0: 		startingFrame /= CHROMA_CONVERSION_FACTOR; //in terms of chroma frames
andrew@0: 		
andrew@0: 		float chromoLength = scrollWidth/CHROMA_CONVERSION_FACTOR;
andrew@0: 		for (i = 0; i < chromoLength; i++){
andrew@0: 			j = i + startingFrame;
andrew@0: 			for (int y = 0;y < 12;y++){
andrew@0: 				
andrew@0: 				if (j < matrixSize)
andrew@0: 					ofSetColor(0,0,255 * (*dMatrix)[j][11-y]);
andrew@0: 				else 
andrew@0: 					ofSetColor(0,0,0);
andrew@0: 				
andrew@0: 				ofRect(i*screenWidth/chromoLength,y*screenHeight/12,screenWidth/chromoLength,screenHeight/12);
andrew@0: 			}//end y
andrew@0: 		}//end i
andrew@0: 		
andrew@0: 	}///end if matrix has content
andrew@0: 	else{
andrew@0: 		printf("Error - please load audio first");
andrew@0: 	}
andrew@0: 	
andrew@0: 	
andrew@0: }
andrew@0: 
andrew@0: 
andrew@0: 
andrew@0: 
andrew@0: 
andrew@0: */
andrew@0: 
andrew@0: