62 lines
1.4 KiB
JavaScript
62 lines
1.4 KiB
JavaScript
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'use strict';
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const dgram = require('dgram');
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function BBDMX(device_id, options) {
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const self = this;
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self.options = options || {};
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self.universe = new Buffer(512);
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self.universe.fill(0);
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self.host = device_id || '127.0.0.1';
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if (typeof options === 'undefined') {
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self.port = 9930;
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} else {
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self.port = options.port || 9930;
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}
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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.send_universe = function() {
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let messageBuffer = new Buffer(`${this.universe.length} `);
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for (let i = 0; i < this.universe.length; i++) {
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const channel = new Buffer(`${this.universe[i]} `);
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const length = channel.length + messageBuffer.length;
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messageBuffer = Buffer.concat([messageBuffer, channel], length);
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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.send_universe.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 (let 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 (let i = 0; i < 512; 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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