andrew@0: /*
andrew@0:  *  ofxSoundFileLoader.cpp
andrew@0:  *  audioFileLoaderSVN1
andrew@0:  *
andrew@0:  *  Created by Andrew on 04/09/2011.
andrew@0:  *  Copyright 2011 QMUL. All rights reserved.
andrew@0:  *
andrew@0:  */
andrew@0: 
andrew@0: #include "ofxSoundFileLoader.h"
andrew@0: 
andrew@0: //NB zooming relies on screenToDraw - this needs to be 1
andrew@0: 
andrew@0: ofxSoundFileLoader::ofxSoundFileLoader(){
andrew@0: 	sfinfo.format = 0;
andrew@0: //	onsetDetect = new ofxAubioOnsetDetection();
andrew@0: 	//onsetDetect->reset();
andrew@0: 	
andrew@0: 	soundFileName = "";
andrew@0: 	screenToDraw = 1;
andrew@0: }
andrew@0: 
andrew@0: ofxSoundFileLoader::~ofxSoundFileLoader(){
andrew@0: //	delete onsetDetect ;
andrew@0: //	printf("file loader delete onset detect\n");
andrew@0: 	
andrew@0: }
andrew@0: 
andrew@0: void ofxSoundFileLoader::updateToAudioPosition(const float& audioPosition){
andrew@0: 	
andrew@0: 	audioHolder.playPosition = audioPosition * audioHolder.audioVector.size();
andrew@0: 	onsetDetect.playPosition = audioPosition;
andrew@0: }
andrew@0: 
andrew@0: void ofxSoundFileLoader::updateToMillisPosition(const double& millis){
andrew@0: 	
andrew@0: //	audioHolder.playPosition = audioPosition * audioHolder.audioVector.size();
andrew@0: 	onsetDetect.playPosition = millis * 44.1 / (double)totalNumberOfSamples;
andrew@0: 	
andrew@0: }
andrew@0: 
andrew@0: void ofxSoundFileLoader::drawFile(){
andrew@0: 	if (screenToDraw == 0){
andrew@0: 		audioHolder.drawAudioVectorSamples(audioHolder.playPosition - audioHolder.audioScaleSamples*0.5, 
andrew@0: 													  audioHolder.playPosition + audioHolder.audioScaleSamples*0.5);
andrew@0: 	}else{
andrew@0: 		onsetDetect.drawOnsetDetectionScrolling();
andrew@0: 	}
andrew@0: 
andrew@0: }
andrew@0: 
andrew@0: #pragma mark -loadAudio
andrew@0: void ofxSoundFileLoader::loadNewAudio(std::string filename){
andrew@0: 	loadLibSndFile(filename.c_str());
andrew@0: }
andrew@0: 
andrew@0: void ofxSoundFileLoader::loadLibSndFile(const char *infilename){
andrew@0: 	
andrew@0: //	if (!sf_close(infile)){
andrew@0: //		printf("closed sndfile okay \n");
andrew@0: //	}
andrew@0: 	
andrew@0: 	// Open Input File with lib snd file
andrew@0:     if (! (infile = sf_open (infilename, SFM_READ, &sfinfo)))
andrew@0:     {   // Open failed
andrew@0:         printf ("SF OPEN routine Not able to open input file %s.\n", infilename) ;
andrew@0:         // Print the error message from libsndfile. 
andrew@0:         puts (sf_strerror (NULL)) ;
andrew@0: 		
andrew@0: 	} else{
andrew@0: 		printf("SF OPEN : file %s okay, ", infilename);
andrew@0: 		printf("number of channels is %i\n", sfinfo.channels);
andrew@0: 		soundFileName = infilename;
andrew@0: 		//sndfileInfoString = "Opened okay ";
andrew@0: 		
andrew@0: 	};
andrew@0: 	
andrew@0: 	readAudio();
andrew@0: 	onsetDetect.printOnsetList();
andrew@0: 	printf("max val of onset det is %f\n", onsetDetect.onsetDetector.maximumDetectionValue);
andrew@0: }
andrew@0: 
andrew@0: void ofxSoundFileLoader::readAudio(){
andrew@0: 	
andrew@0: 	onsetDetect.reset();
andrew@0: 	//could add this in - check the stored github
andrew@0: 	
andrew@0: 	// HERE IS THE CLASSIC LOADING FILE CODE
andrew@0: 	//DEALS WITH MORE THAN MONO
andrew@0: 	int channels = sfinfo.channels;
andrew@0: 	int blocksize = FRAMESIZE;
andrew@0: 	
andrew@0: 	float buf [channels * blocksize] ;
andrew@0: 	int k, m, readcount ;
andrew@0: 	
andrew@0: 	DoubleVector d;
andrew@0: 	while ((readcount = sf_readf_float (infile, buf, blocksize)) > 0){
andrew@0: 		for (k = 0 ; k < readcount ; k++){	
andrew@0: 			//readcount is a chunk - eg 512 samples - of audio that is processed
andrew@0: 			d.clear();
andrew@0: 			for (m = 0 ; m < channels ; m++){
andrew@0: 				d.push_back(buf [k * channels + m]);
andrew@0: 				//		 fprintf (outfile, " % 12.10f", buf [k * channels + m]) ;
andrew@0: 				//		 fprintf (outfile, "\n") ;
andrew@0: 				if (m == 0){
andrew@0: 					//makes the vector hold the mono file - the left channel
andrew@0: 					audioHolder.audioVector.push_back(buf[k * channels + 0]);
andrew@0: 					frame[k] = buf[k*channels + 0];
andrew@0: 				}
andrew@0: 				
andrew@0: 			} 
andrew@0: 		audioHolder.audioMatrix.push_back(d);
andrew@0: 			//storing the full soundfile in multiple channels in the audioMatrix
andrew@0: 		}
andrew@0: 		//printf("processing at readcount %i\n", readcount);
andrew@0: 		//could call this here
andrew@0: 		onsetDetect.processFrame(&frame[0], blocksize);
andrew@0: 
andrew@0: 		
andrew@0: 	}//end readcount
andrew@0: 	
andrew@0: 	//printf("audio vector size is %i\n", (int) audioHolder.audioVector.size());
andrew@0: 	audioHolder.length = (int) audioHolder.audioVector.size();
andrew@0: 	totalNumberOfSamples = audioHolder.length;
andrew@0: 	
andrew@0: 	printf("Total number of samples %i onset frames %i\n", totalNumberOfSamples, onsetDetect.frameCountIndex);
andrew@0: 	
andrew@0: 	freeMemory();
andrew@0: }
andrew@0: 
andrew@0: 
andrew@0: void ofxSoundFileLoader::freeMemory(){
andrew@0: 	printf("FREE MEMORY in file loader\n");
andrew@0: 	audioHolder.audioMatrix.clear();
andrew@0: 	audioHolder.audioVector.clear();
andrew@0: }
andrew@0: 
andrew@0: void ofxSoundFileLoader::zoomOut(){
andrew@0: 	if (screenToDraw == 0){
andrew@0: 		audioHolder.audioScaleSamples *= 2.;
andrew@0: 	}
andrew@0: 	if (screenToDraw == 1){
andrew@0: 		onsetDetect.amplitudeNumber *= 2;
andrew@0: 	}
andrew@0: }
andrew@0: 
andrew@0: void ofxSoundFileLoader::zoomIn(){
andrew@0: 	if (screenToDraw == 0){
andrew@0: 		audioHolder.audioScaleSamples /= 2.;
andrew@0: 	}
andrew@0: 	if (screenToDraw == 1 && onsetDetect.amplitudeNumber > 2){
andrew@0: 		onsetDetect.amplitudeNumber /= 2;
andrew@0: 	}
andrew@0: }
andrew@0: