diff DrumTimingLoader_OF/ofxAudioFileLoader/ofxSoundFileLoader.cpp @ 0:82352cfc0b23

Added files from ISMIR groove drum timing work

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DrumTimingLoader_OF/ofxAudioFileLoader/ofxSoundFileLoader.cpp	Mon Oct 01 22:24:32 2012 +0100
@@ -0,0 +1,155 @@
+/*
+ *  ofxSoundFileLoader.cpp
+ *  audioFileLoaderSVN1
+ *
+ *  Created by Andrew on 04/09/2011.
+ *  Copyright 2011 QMUL. All rights reserved.
+ *
+ */
+
+#include "ofxSoundFileLoader.h"
+
+//NB zooming relies on screenToDraw - this needs to be 1
+
+ofxSoundFileLoader::ofxSoundFileLoader(){
+	sfinfo.format = 0;
+//	onsetDetect = new ofxAubioOnsetDetection();
+	//onsetDetect->reset();
+	
+	soundFileName = "";
+	screenToDraw = 1;
+}
+
+ofxSoundFileLoader::~ofxSoundFileLoader(){
+//	delete onsetDetect ;
+//	printf("file loader delete onset detect\n");
+	
+}
+
+void ofxSoundFileLoader::updateToAudioPosition(const float& audioPosition){
+	
+	audioHolder.playPosition = audioPosition * audioHolder.audioVector.size();
+	onsetDetect.playPosition = audioPosition;
+}
+
+void ofxSoundFileLoader::updateToMillisPosition(const double& millis){
+	
+//	audioHolder.playPosition = audioPosition * audioHolder.audioVector.size();
+	onsetDetect.playPosition = millis * 44.1 / (double)totalNumberOfSamples;
+	
+}
+
+void ofxSoundFileLoader::drawFile(){
+	if (screenToDraw == 0){
+		audioHolder.drawAudioVectorSamples(audioHolder.playPosition - audioHolder.audioScaleSamples*0.5, 
+													  audioHolder.playPosition + audioHolder.audioScaleSamples*0.5);
+	}else{
+		onsetDetect.drawOnsetDetectionScrolling();
+	}
+
+}
+
+#pragma mark -loadAudio
+void ofxSoundFileLoader::loadNewAudio(std::string filename){
+	loadLibSndFile(filename.c_str());
+}
+
+void ofxSoundFileLoader::loadLibSndFile(const char *infilename){
+	
+//	if (!sf_close(infile)){
+//		printf("closed sndfile okay \n");
+//	}
+	
+	// Open Input File with lib snd file
+    if (! (infile = sf_open (infilename, SFM_READ, &sfinfo)))
+    {   // Open failed
+        printf ("SF OPEN routine Not able to open input file %s.\n", infilename) ;
+        // Print the error message from libsndfile. 
+        puts (sf_strerror (NULL)) ;
+		
+	} else{
+		printf("SF OPEN : file %s okay, ", infilename);
+		printf("number of channels is %i\n", sfinfo.channels);
+		soundFileName = infilename;
+		//sndfileInfoString = "Opened okay ";
+		
+	};
+	
+	readAudio();
+	onsetDetect.printOnsetList();
+	printf("max val of onset det is %f\n", onsetDetect.onsetDetector.maximumDetectionValue);
+}
+
+void ofxSoundFileLoader::readAudio(){
+	
+	onsetDetect.reset();
+	//could add this in - check the stored github
+	
+	// HERE IS THE CLASSIC LOADING FILE CODE
+	//DEALS WITH MORE THAN MONO
+	int channels = sfinfo.channels;
+	int blocksize = FRAMESIZE;
+	
+	float buf [channels * blocksize] ;
+	int k, m, readcount ;
+	
+	DoubleVector d;
+	while ((readcount = sf_readf_float (infile, buf, blocksize)) > 0){
+		for (k = 0 ; k < readcount ; k++){	
+			//readcount is a chunk - eg 512 samples - of audio that is processed
+			d.clear();
+			for (m = 0 ; m < channels ; m++){
+				d.push_back(buf [k * channels + m]);
+				//		 fprintf (outfile, " % 12.10f", buf [k * channels + m]) ;
+				//		 fprintf (outfile, "\n") ;
+				if (m == 0){
+					//makes the vector hold the mono file - the left channel
+					audioHolder.audioVector.push_back(buf[k * channels + 0]);
+					frame[k] = buf[k*channels + 0];
+				}
+				
+			} 
+		audioHolder.audioMatrix.push_back(d);
+			//storing the full soundfile in multiple channels in the audioMatrix
+		}
+		//printf("processing at readcount %i\n", readcount);
+		//could call this here
+		onsetDetect.processFrame(&frame[0], blocksize);
+
+		
+	}//end readcount
+	
+	//printf("audio vector size is %i\n", (int) audioHolder.audioVector.size());
+	audioHolder.length = (int) audioHolder.audioVector.size();
+	totalNumberOfSamples = audioHolder.length;
+	
+	printf("Total number of samples %i onset frames %i\n", totalNumberOfSamples, onsetDetect.frameCountIndex);
+	
+	freeMemory();
+}
+
+
+void ofxSoundFileLoader::freeMemory(){
+	printf("FREE MEMORY in file loader\n");
+	audioHolder.audioMatrix.clear();
+	audioHolder.audioVector.clear();
+}
+
+void ofxSoundFileLoader::zoomOut(){
+	if (screenToDraw == 0){
+		audioHolder.audioScaleSamples *= 2.;
+	}
+	if (screenToDraw == 1){
+		onsetDetect.amplitudeNumber *= 2;
+	}
+}
+
+void ofxSoundFileLoader::zoomIn(){
+	if (screenToDraw == 0){
+		audioHolder.audioScaleSamples /= 2.;
+	}
+	if (screenToDraw == 1 && onsetDetect.amplitudeNumber > 2){
+		onsetDetect.amplitudeNumber /= 2;
+	}
+}
+