Fake Garage Band for NIHostIntegrationAgent

garage-band.js

var midi = require('midi');
var mdns = require('mdns');
var osc = require('node-osc');

var KK_OSC_SERVICE_NAME = 'KOMPLETE KONTROL S-Series';
var LISTEN_PORT = 7001;
var txtRecord = {
    AppleLogic: 'GarageBand10'
};

// create OSC listener service
var oscServer = new osc.Server(LISTEN_PORT, '0.0.0.0');
oscServer.on("message", function (msg, rinfo) {
    console.log("message:");
    console.log(msg);
});

// create mDNS Advertisement for OSC listener service
var ad = mdns.createAdvertisement(mdns.udp('osc'), LISTEN_PORT, {txtRecord: txtRecord});
ad.on('error', function(error) {
    console.warn(error);
});
ad.start();

// send sysex to activate NIHostIntegrationAgent
var midiOutput = new midi.output();
var midiPortCount = midiOutput.getPortCount();
for (var i = 0; i < midiPortCount; i++) {
    midiOutput.openPort(i);
    midiOutput.sendMessage([0xF0, 0x7E, 0x00, 0x06, 0x01, 0xF7]);
    midiOutput.closePort();
}

// watch all OSC service to
// discover NIHostIntegration listen port
var browser = mdns.createBrowser(mdns.udp('osc'));
browser.on('serviceUp', function(service) {
    console.log("service up: ", service);
    if (service.name == KK_OSC_SERVICE_NAME) {
        console.log("KK_OSC_SERVICE_PORT: ", service.port);
    }
});
browser.on('serviceDown', function(service) {
  console.log("service down: ", service);
});
browser.start();
// discover all available service types
// var all_the_types = mdns.browseThemAll();