58 lines
1.3 KiB
JavaScript
58 lines
1.3 KiB
JavaScript
const dgram = require('dgram');
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const UNIVERSE_LEN = 512;
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function BBDMX(deviceId = '127.0.0.1', options = {}) {
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const self = this;
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self.options = options;
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self.universe = new Buffer(UNIVERSE_LEN + 1);
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self.universe.fill(0);
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self.host = deviceId;
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self.port = self.options.port || 9930;
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self.dev = dgram.createSocket('udp4');
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self.sleepTime = 24;
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self.start();
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}
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BBDMX.prototype.sendUniverse = function () {
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let channel;
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let messageBuffer = new Buffer(UNIVERSE_LEN.toString());
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for (const i = 1; i <= UNIVERSE_LEN; i++) {
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channel = new Buffer(' ' + this.universe[i]);
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messageBuffer = Buffer.concat([messageBuffer, channel]);
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}
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this.dev.send(messageBuffer, 0, messageBuffer.length, this.port, this.host);
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};
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BBDMX.prototype.start = function () {
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this.timeout = setInterval(this.sendUniverse.bind(this), this.sleepTime);
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};
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BBDMX.prototype.stop = function () {
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clearInterval(this.timeout);
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};
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BBDMX.prototype.close = function (cb) {
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this.stop();
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cb(null);
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};
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BBDMX.prototype.update = function (u) {
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for (const c in u) {
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this.universe[c] = u[c];
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}
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};
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BBDMX.prototype.updateAll = function (v) {
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for (const i = 1; i <= UNIVERSE_LEN; i++) {
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this.universe[i] = v;
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}
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};
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BBDMX.prototype.get = function (c) {
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return this.universe[c];
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};
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module.exports = BBDMX;
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