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-rw-r--r--glitcher2/src/audioGlitcher.h182
-rw-r--r--glitcher2/src/main.cpp6
-rw-r--r--glitcher2/src/ofApp.cpp88
-rw-r--r--glitcher2/src/ofApp.h31
4 files changed, 307 insertions, 0 deletions
diff --git a/glitcher2/src/audioGlitcher.h b/glitcher2/src/audioGlitcher.h
new file mode 100644
index 0000000..a33b3fb
--- /dev/null
+++ b/glitcher2/src/audioGlitcher.h
@@ -0,0 +1,182 @@
+#pragma once
+
+#include "ofMain.h"
+#include "ofxOpenCv.h"
+
+class audioGlitcher {
+ public:
+
+ ofxCvColorImage buffer;
+ ofFbo renderFBO;
+ IplImage tmp;
+ vector<float> *samples;
+ int interp_x,interp_y;
+ float trans_x,trans_y;
+ float scale;
+ float rotation;
+ float origin_x,origin_y;
+
+ void setup(int w,int h,vector<float> *s){
+ buffer.allocate(w,h);
+ renderFBO.allocate(w,h,GL_RGB);
+ samples=s;
+ origin_x=origin_y=0.5f;
+ trans_x=trans_y=0.0f;
+ scale=1.0f;
+ rotation=0.0f;
+ interp_x=16;
+ interp_y=12;
+ }
+ void set_interp(int ix,int iy){
+ interp_x=ix;
+ interp_y=iy;
+ }
+ void set_trans(float x,float y){
+ trans_x=x;
+ trans_y=y;
+ }
+ void set_scale(float s){
+ scale=s;
+ }
+ void set_rot(float r){
+ rotation=r;
+ }
+ void set_origin(float x,float y){
+ origin_x=x;
+ origin_y=y;
+ }
+ void draw(int x,int y){
+ renderFBO.draw(x,y);
+ }
+ void update(){
+
+ renderFBO.readToPixels(buffer.getPixels());
+ buffer.flagImageChanged();
+
+ //create low res remap target
+
+ cv::Mat dstX(interp_x,interp_y,CV_32FC1);
+ cv::Mat dstY(interp_x,interp_y,CV_32FC1);
+ cv::Mat srcX(interp_x,interp_y,CV_32FC1);
+ cv::Mat srcY(interp_x,interp_y,CV_32FC1);
+
+ float xFactor=renderFBO.getWidth()/srcX.cols;
+ float yFactor=renderFBO.getHeight()/srcX.rows;
+ for (int i=0;i<srcX.cols;i++){
+ for (int j=0;j<srcX.rows;j++){
+ srcX.at<float>(j,i)=i*xFactor;
+ srcY.at<float>(j,i)=j*yFactor;
+ }
+ }
+
+ //transform the low res matrix
+ float tX=trans_x-.05; //fraction of image
+ float tY=trans_y-.08; //fraction of image
+ float oX=origin_x; //fraction of image
+ float oY=origin_y; //fraction of image
+ float s=scale;
+ float r=rotation;
+
+ cv::Point2f srcTri[3], dstTri[3];
+
+ // Compute matrix by creating triangle and transforming
+ srcTri[0].x=0;
+ srcTri[0].y=0;
+ srcTri[1].x=dstX.rows-1;
+ srcTri[1].y=0;
+ srcTri[2].x=0;
+ srcTri[2].y=dstX.cols-1;
+
+ for (int i=0;i<3;i++){
+
+ dstTri[i].x=srcTri[i].x+(tX*dstX.cols);
+ dstTri[i].y=srcTri[i].y+(tY*dstX.cols); //use cols for equiv coords
+ //rotate and scale around centre
+ //transform to centre
+ dstTri[i].x-=(oX*dstX.cols);
+ dstTri[i].y-=(oY*dstX.cols);
+
+ dstTri[i].x*=s;
+ dstTri[i].y*=s;
+
+ double dx=(dstTri[i].x*cos(r))-(dstTri[i].y*sin(r));
+ double dy=(dstTri[i].x*sin(r))+(dstTri[i].y*cos(r));
+
+ dstTri[i].x=dx;
+ dstTri[i].y=dy;
+
+ //transform back
+ dstTri[i].x+=(oX*dstX.cols);
+ dstTri[i].y+=(oY*dstX.cols);
+ }
+
+ cv::Mat trans_mat=getAffineTransform(srcTri,dstTri);
+ warpAffine(srcX,dstX,trans_mat, srcX.size(), cv::INTER_LINEAR, cv::BORDER_WRAP);
+ warpAffine(srcY,dstY,trans_mat, srcY.size(), cv::INTER_LINEAR, cv::BORDER_WRAP);
+
+ cv::Mat scaledstX;
+ cv::Mat scaledstY;
+
+ cv::resize(dstX,scaledstX, cv::Size(renderFBO.getWidth(),renderFBO.getHeight()), 0, 0, cv::INTER_LINEAR);
+ cv::resize(dstY,scaledstY, cv::Size(renderFBO.getWidth(),renderFBO.getHeight()), 0, 0, cv::INTER_LINEAR);
+
+ cv::Mat buf = cv::cvarrToMat(buffer.getCvImage(),false); //copyData=
+ cv::Mat dstbuf;
+
+ cv::remap(buf,dstbuf,scaledstX,scaledstY, cv::INTER_NEAREST, cv::BORDER_WRAP); //, cv::Scalar(0,0, 0) );
+ tmp = IplImage(dstbuf);
+
+ //buffer=tmp;
+ //buffer.remap(scaledstX,scaledstY);
+ buffer=&tmp;
+
+ renderFBO.begin();
+
+ //
+ ofSetColor(255,255,255);
+
+ buffer-=1;
+ buffer.draw(0,0);
+ //
+
+ //ofEnableAlphaBlending();
+ //ofSetColor(0,0,0,128);
+ //ofRect(0,0,ofGetWidth(),ofGetHeight());
+ //ofDisableAlphaBlending();
+
+ if (false){
+ ofNoFill();
+ ofPushMatrix();
+ ofTranslate(renderFBO.getWidth()/2,renderFBO.getHeight()/2);
+ ofRect(-20,-20,40,40);
+ ofPopMatrix();
+ }
+
+ if (true) {
+ ofPushMatrix();
+ ofTranslate(0,renderFBO.getHeight()/2);
+
+
+ ofSetColor(0,0,0);
+ ofFill();
+ ofBeginShape();
+ for (int i=0;i<samples->size();i++){
+ ofVertex(i,(*samples)[i]*renderFBO.getHeight());
+ }
+ ofEndShape();
+
+ ofSetColor(255,255,255);
+ ofNoFill();
+ ofBeginShape();
+ for (int i=0;i<samples->size();i++){
+ ofVertex(i,(*samples)[i]*renderFBO.getHeight());
+ }
+ ofEndShape();
+
+ ofPopMatrix();
+ }
+
+ renderFBO.end();
+ //renderFBO.flagImageChanged();
+ }
+}; \ No newline at end of file
diff --git a/glitcher2/src/main.cpp b/glitcher2/src/main.cpp
new file mode 100644
index 0000000..d77aea4
--- /dev/null
+++ b/glitcher2/src/main.cpp
@@ -0,0 +1,6 @@
+#include "ofApp.h"
+
+int main() {
+ ofSetupOpenGL(512,384, OF_WINDOW);
+ ofRunApp(new ofApp());
+}
diff --git a/glitcher2/src/ofApp.cpp b/glitcher2/src/ofApp.cpp
new file mode 100644
index 0000000..9615a75
--- /dev/null
+++ b/glitcher2/src/ofApp.cpp
@@ -0,0 +1,88 @@
+#include "ofApp.h"
+
+
+//--------------------------------------------------------------
+void ofApp::setup() {
+ ofSetLogLevel(OF_LOG_WARNING);
+
+ ofSetFrameRate(60);
+
+ int bufferSize= ofGetWidth(); //should be based on the size of glitch buffer
+
+ soundStream.listDevices();
+ //nb all you have to do to make audio work is to turn off pulseaudio in configuration
+ soundStream.setup(this, 0, 1, 44100, bufferSize, 1);
+ samples.resize(bufferSize);
+
+ glitch.setup(ofGetWidth(),ofGetHeight(),&samples);
+ //glitch.set_interp(ofRandom(30)+2,ofRandom(22)+2);
+
+
+ frame=0;
+}
+
+//--------------------------------------------------------------
+void ofApp::update() {
+ ofSetWindowTitle(ofToString(ofGetFrameRate()));
+
+ glitch.update();
+}
+
+//--------------------------------------------------------------
+void ofApp::draw() {
+ frame++;
+ if (frame==1000){
+ //glitch.set_interp(ofRandom(30)+2,ofRandom(22)+2);
+ frame=0;
+ }
+
+
+ glitch.draw(0,0); //eventually textured into a viewport
+
+
+}
+
+void ofApp::audioIn(float * input, int bufferSize, int nChannels){
+ for (int i=0;i<bufferSize/nChannels;i+=nChannels){
+ samples[i]=input[i*nChannels];
+ }
+}
+
+
+
+//--------------------------------------------------------------
+void ofApp::exit() {
+
+}
+
+//--------------------------------------------------------------
+void ofApp::keyPressed (int key) {
+ switch (key) {
+ case ' ':
+ glitch.set_interp(ofRandom(30)+2,ofRandom(22)+2);
+ glitch.set_rot(ofRandom(1)>0.5?ofRandom(0.1):0);
+ break;
+
+ case OF_KEY_UP:
+ break;
+
+ case OF_KEY_DOWN:
+ break;
+ }
+}
+
+//--------------------------------------------------------------
+void ofApp::mouseDragged(int x, int y, int button)
+{}
+
+//--------------------------------------------------------------
+void ofApp::mousePressed(int x, int y, int button)
+{}
+
+//--------------------------------------------------------------
+void ofApp::mouseReleased(int x, int y, int button)
+{}
+
+//--------------------------------------------------------------
+void ofApp::windowResized(int w, int h)
+{}
diff --git a/glitcher2/src/ofApp.h b/glitcher2/src/ofApp.h
new file mode 100644
index 0000000..beaceaf
--- /dev/null
+++ b/glitcher2/src/ofApp.h
@@ -0,0 +1,31 @@
+#pragma once
+
+#include "ofMain.h"
+#include "ofxOpenCv.h"
+#include "audioGlitcher.h"
+
+
+class ofApp : public ofBaseApp {
+public:
+
+ void setup();
+ void update();
+ void draw();
+ void exit();
+
+ void keyPressed(int key);
+ void mouseDragged(int x, int y, int button);
+ void mousePressed(int x, int y, int button);
+ void mouseReleased(int x, int y, int button);
+ void windowResized(int w, int h);
+
+ void audioIn(float * input, int bufferSize, int nChannels);
+
+ audioGlitcher glitch;
+
+ ofSoundStream soundStream;
+ vector<float> samples;
+
+ int frame;
+
+};
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