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