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// simple audio test reading out harmonics
// make sure jack is running and have a look at the connections
// also check the values (samplesize and samplerate) to match your conf
// -jrml
H=400
W=64
M=4;
//H=600;
//W=H/(H/80);
set_resolution(W,H);
audio = new AudioJack("alsaplayer", 2048, 44100);
//encoder = new VideoEncoder(10, 64000, 5, 24000);
//encoder.add_audio(audio);
//register_encoder(encoder);
//encoder.start_filesave("prova.ogg");
geo = new GeometryLayer();
geo.activate(true);
geo.start();
geo.set_fps();
add_layer(geo);
kbd = new KeyboardController();
register_controller(kbd);
kbd.released_q = function() { quit(); }
kbd.released_r = function() {
if(reset("audio_test.js")) {
rem_controller(this);
echo("reset ok");
}
return true;
}
bang = new TriggerController();
bang.frame = function() {
audio.fft();
geo.color(0,0,0,50);
geo.rectangle_fill(0,0,W,H);
flash = 0;
for(c=0;c<16;c++) {
hc = audio.get_harmonic(c);
if(hc>H) hc = H-1; // boundary
if(hc>(H/2)) flash=hc; // flash
geo.color( 0xff, 0xff, 0xff, 0xff );
geo.vline( c*M, H, H-( hc ));
geo.vline( (c*M)+1, H, H-( hc ));
geo.vline( (c*M)+2, 0, hc);
geo.vline( (c*M)+3, 0, hc);
}
if(flash >0) {
geo.color(0xff,0xff,0xff, 200);
geo.ellipse_fill(W/2, H/2, (W/2)-10, hc/2);
}
}
register_controller(bang);
gc();
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