Using face detection to run a function

`import gab.opencv.*; import processing.video.*; import java.awt.*;

Capture video; OpenCV opencv;

Minim minim; AudioPlayer song; import ddf.minim.*;

PFont font; String time = "10"; int t; int interval = 10;

void setup() { size(640, 500);

minim = new Minim(this);

song = minim.loadFile("alarm.mp3");

font = createFont("Arial", 100);

video = new Capture(this, 640/2, 480/2); opencv = new OpenCV(this, 640/2, 480/2); opencv.loadCascade(OpenCV.CASCADE_FRONTALFACE);

video.start(); }

void draw() {

background(0);

t = interval-int(millis()/1000); time = nf(t , 1); if(t == 0){ song.play(); // interval+=10; }

text(time, 10, 490);

scale(2); opencv.loadImage(video);

image(video, 0, 0 );

noFill(); stroke(0, 255, 0); strokeWeight(3); Rectangle[] faces = opencv.detect(); //println(faces.length);

for (int i = 0; i < faces.length; i++) { // println(faces[i].x + "," + faces[i].y); rect(faces[i].x, faces[i].y, faces[i].width, faces[i].height); } }

void captureEvent(Capture c) { c.read(); } void songClose() { song.close(); } ` I'm fairly new to processing, what would be the best way use the face detection library to control when the alarm audio is stopped?

Thanks in advance.