path: root/vamphost/src/testApp.cpp

#include "testApp.h"

//--------------------------------------------------------------
void testApp::setup() {

    ofSetVerticalSync(true);
    ofSetCircleResolution(80);
    ofBackground(54, 54, 54);

    // 0 output channels,
    // 2 input channels
    // 44100 samples per second
    // 256 samples per buffer
    // 4 num buffers (latency)

    soundStream.listDevices();

    //if you want to set a different device id
    //soundStream.setDeviceID(0); //bear in mind the device id corresponds to all audio devices, including  input-only and output-only devices.

    int rate =44100;
    int channels=1;
    int outputNo=0;

    //string soname="qm-vamp-plugins";
    //string id="qm-tempotracker";
    //string id="qm-barbeattracker";



    string soname="vamp-example-plugins.so";
    string id="percussiononsets";

    whichplugin=5;

    int bufferSize = vamphost.init(whichplugin,channels,rate,outputNo);


    left.assign(bufferSize, 0.0);
    right.assign(bufferSize, 0.0);
    volHistory.assign(400, 0.0);

    bufferCounter   = 0;
    drawCounter     = 0;
    smoothedVol     = 0.0;
    scaledVol       = 0.0;

    //if you want to set a different device id
    //soundStream.setDeviceID(0); //bear in mind the device id corresponds to all audio devices, including  input-only and output-only devices.

    soundStream.setup(this, 0, channels, rate, bufferSize, 4);


    ofSetFrameRate(25);

    


}


//--------------------------------------------------------------
void testApp::update(){
     //lets scale the vol up to a 0-1 range
    scaledVol = ofMap(smoothedVol, 0.0, 0.17, 0.0, 1.0, true);

    //lets record the volume into an array
    volHistory.push_back( scaledVol );

    //if we are bigger the the size we want to record - lets drop the oldest value
    if( volHistory.size() >= 400 ){
        volHistory.erase(volHistory.begin(), volHistory.begin()+1);
    }
}

//--------------------------------------------------------------
void testApp::draw(){
ofSetColor(225);
    ofDrawBitmapString("AUDIO INPUT EXAMPLE", 32, 32);
    ofDrawBitmapString("press 's' to unpause the audio\n'e' to pause the audio", 31, 92);

    ofNoFill();

    // draw the left channel:
    ofPushStyle();
        ofPushMatrix();
        ofTranslate(32, 170, 0);

        ofSetColor(225);
        ofDrawBitmapString("Left Channel", 4, 18);

        ofSetLineWidth(1);
        ofRect(0, 0, 512, 200);

        ofSetColor(245, 58, 135);
        ofSetLineWidth(3);

            ofBeginShape();
            for (int i = 0; i < left.size()/2; i++){
                ofVertex(i, 100 -left[i*2]*180.0f);
            }
            ofEndShape(false);

        ofPopMatrix();
    ofPopStyle();
    /*
    // draw the right channel:
    ofPushStyle();
        ofPushMatrix();
        ofTranslate(32, 370, 0);

        ofSetColor(225);
        ofDrawBitmapString("Right Channel", 4, 18);

        ofSetLineWidth(1);
        ofRect(0, 0, 512, 200);

        ofSetColor(245, 58, 135);
        ofSetLineWidth(3);

            ofBeginShape();
            for (int i = 0; i < right.size()/2; i++){
                ofVertex(i, 100 -right[i*2]*180.0f);
            }
            ofEndShape(false);

        ofPopMatrix();
    ofPopStyle();

    */
    // draw the average volume:
    ofPushStyle();
        ofPushMatrix();
        ofTranslate(565, 170, 0);

        ofSetColor(225);
        ofDrawBitmapString("Scaled average vol (0-100): " + ofToString(scaledVol * 100.0, 0), 4, 18);
        ofRect(0, 0, 400, 400);

        ofSetColor(245, 58, 135);
        ofFill();
        ofCircle(200, 200, scaledVol * 190.0f);

        //lets draw the volume history as a graph
        ofBeginShape();
        for (int i = 0; i < volHistory.size(); i++){
            if( i == 0 ) ofVertex(i, 400);

            ofVertex(i, 400 - volHistory[i] * 70);

            if( i == volHistory.size() -1 ) ofVertex(i, 400);
        }
        ofEndShape(false);

        //draw the features history as alternate polygons in a 400x400 box : 16 seconds @ 25fps

        ofPopMatrix();
    ofPopStyle();

    drawCounter++;

    ofSetColor(225);
    string reportString = "buffers received: "+ofToString(bufferCounter)+"\ndraw routines called: "+ofToString(drawCounter)+"\nticks: " + ofToString(soundStream.getTickCount());
    reportString +="\nfeatures found: "+ofToString(vamphost.numFeat)+" average signal: "+ofToString(vamphost.avg)+" samples: "+ofToString(vamphost.num);
    reportString +="\n"+vamphost.key;
    ofDrawBitmapString(reportString, 32, 589);

}

void testApp::audioIn(float * input, int bufferSize, int nChannels){

    float curVol = 0.0;

    // samples are "interleaved"
    int numCounted = 0;

    //lets go through each sample and calculate the root mean square which is a rough way to calculate volume
    for (int i = 0; i < bufferSize; i++){
        //left[i]     = input[i*2]*0.5;
        //right[i]    = input[i*2+1]*0.5;
        left[i]     = input[i]*0.5;

        curVol += left[i] * left[i];
        //curVol += right[i] * right[i];
        numCounted++;
    }

    //this is how we get the mean of rms :)
    curVol /= (float)numCounted;

    // this is how we get the root of rms :)
    curVol = sqrt( curVol );

    smoothedVol *= 0.93;
    smoothedVol += 0.07 * curVol;

    bufferCounter++;

    //input would seem to be in the range 0..1
    vamphost.process_frame(input,bufferSize);


}

//--------------------------------------------------------------
void testApp::exit(){
   vamphost.cleanup();
}

//--------------------------------------------------------------
void testApp::keyPressed(int key){

    switch (key) {
        case 's':
        case 'S':
            soundStream.start();
            break;
        case 'e':
        case 'E':
            soundStream.stop();
            break;
        case OF_KEY_UP:
            whichplugin=((whichplugin+1)%vamphost.list.size());
            vamphost.cleanup();
            vamphost.init(whichplugin);
            break;
        case OF_KEY_DOWN:
            whichplugin=whichplugin>0?whichplugin-1:vamphost.list.size()-1;
            vamphost.cleanup();
            vamphost.init(whichplugin);
            break;

    }
}

//--------------------------------------------------------------
void testApp::keyReleased(int key){

}

//--------------------------------------------------------------
void testApp::mouseMoved(int x, int y ){

}

//--------------------------------------------------------------
void testApp::mouseDragged(int x, int y, int button){

}

//--------------------------------------------------------------
void testApp::mousePressed(int x, int y, int button){

}

//--------------------------------------------------------------
void testApp::mouseReleased(int x, int y, int button){

}

//--------------------------------------------------------------
void testApp::windowResized(int w, int h){

}