discord.js/lib/Voice/VoiceConnection.js

"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var WebSocket = require("ws");
var dns = require("dns");
var udp = require("dgram");
var Lame = require("lame");
var Opus = require('node-opus');
var Wav = require('wav');
var fs = require("fs");
var ffmpeg = require('fluent-ffmpeg');
var AudioEncoder = require("./AudioEncoder.js");
var VoicePacket = require("./VoicePacket.js");
var StreamIntent = require("./StreamIntent.js");

var VoiceConnection = (function () {
	function VoiceConnection(channel, client, session, token, server, endpoint) {
		_classCallCheck(this, VoiceConnection);

		this.voiceChannel = channel;
		this.client = client;
		this.session = session;
		this.token = token;
		this.server = server;
		this.endpoint = endpoint.replace(":80", "");
		this.vWS = null; // vWS means voice websocket
		this.ready = false;
		this.vWSData = {};
		this.opus = new Opus.OpusEncoder(48000, 1);
		this.encoder = new AudioEncoder();
		this.udp = null;
		this.playingIntent = null;
		this.playing = false;
		this.init();
	}

	VoiceConnection.prototype.stopPlaying = function stopPlaying() {
		this.playingIntent = null;
	};

	VoiceConnection.prototype.playRawStream = function playRawStream(stream) {

		var self = this;

		var startTime = Date.now();
		var sequence = 0;
		var time = 0;
		var count = 0;

		var length = 20;

		if (self.playingIntent) {
			self.stopPlaying();
		}

		var retStream = new StreamIntent();
		self.playingIntent = retStream;

		function send() {
			if (self.playingIntent && self.playingIntent !== retStream) {
				console.log("ending it!");
				self.setSpeaking(false);
				retStream.emit("end");
				return;
			}
			try {

				var buffer = stream.read(1920);

				if (!buffer) {
					setTimeout(send, length * 10); // give chance for some data in 200ms to appear
				}

				if (buffer && buffer.length === 1920) {
					count++;
					sequence + 10 < 65535 ? sequence += 1 : sequence = 0;
					time + 9600 < 4294967295 ? time += 960 : time = 0;

					self.sendBuffer(buffer, sequence, time, function (e) {});

					var nextTime = startTime + count * length;

					setTimeout(function () {
						send();
					}, length + (nextTime - Date.now()));
					if (!self.playing) self.setSpeaking(true);
				} else {
					retStream.emit("end");
					self.setSpeaking(false);
				}
			} catch (e) {
				retStream.emit("error", e);
			}
		}
		self.setSpeaking(true);
		send();

		return retStream;
	};

	VoiceConnection.prototype.setSpeaking = function setSpeaking(value) {
		this.playing = value;
		this.vWS.send(JSON.stringify({
			op: 5,
			d: {
				speaking: value,
				delay: 0
			}
		}));
	};

	VoiceConnection.prototype.sendPacket = function sendPacket(packet) {
		var callback = arguments.length <= 1 || arguments[1] === undefined ? function (err) {} : arguments[1];

		var self = this;
		self.playing = true;
		try {
			self.udp.send(packet, 0, packet.length, self.vWSData.port, self.endpoint, callback);
		} catch (e) {
			self.playing = false;
			callback(e);
			return false;
		}
	};

	VoiceConnection.prototype.sendBuffer = function sendBuffer(rawbuffer, sequence, timestamp, callback) {
		var self = this;
		self.playing = true;
		try {

			var buffer = self.encoder.opusBuffer(rawbuffer);
			var packet = new VoicePacket(buffer, sequence, timestamp, self.vWSData.ssrc);
			return self.sendPacket(packet, callback);
		} catch (e) {
			self.playing = false;
			console.log("etype", e.stack);
			return false;
		}
	};

	VoiceConnection.prototype.test = function test() {
		var self = this;
		this.encoder.encodeFile("C:/users/amish/desktop/audio.mp3")["catch"](error).then(function (stream) {

			var intent = self.playRawStream(stream);

			intent.on("end", function () {
				console.log("stream ended");
			});
		});
		function error() {
			console.log("ERROR!");
		}
	};

	VoiceConnection.prototype.init = function init() {
		var _this = this;

		var self = this;
		dns.lookup(this.endpoint, function (err, address, family) {
			self.endpoint = address;
			var vWS = self.vWS = new WebSocket("wss://" + _this.endpoint, null, { rejectUnauthorized: false });
			var udpClient = self.udp = udp.createSocket("udp4");

			var firstPacket = true;

			var discordIP = "",
			    discordPort = "";

			udpClient.bind({ exclusive: true });
			udpClient.on('message', function (msg, rinfo) {
				var buffArr = JSON.parse(JSON.stringify(msg)).data;
				if (firstPacket === true) {
					for (var i = 4; i < buffArr.indexOf(0, i); i++) {
						discordIP += String.fromCharCode(buffArr[i]);
					}
					discordPort = msg.readUIntLE(msg.length - 2, 2).toString(10);

					var wsDiscPayload = {
						"op": 1,
						"d": {
							"protocol": "udp",
							"data": {
								"address": discordIP,
								"port": Number(discordPort),
								"mode": self.vWSData.modes[0] //Plain
							}
						}
					};
					console.log("success!!!");
					vWS.send(JSON.stringify(wsDiscPayload));
					firstPacket = false;
				}
			});

			vWS.on("open", function () {
				vWS.send(JSON.stringify({
					op: 0,
					d: {
						server_id: self.server.id,
						user_id: self.client.internal.user.id,
						session_id: self.session,
						token: self.token
					}
				}));
			});

			var KAI;

			vWS.on("message", function (msg) {
				var data = JSON.parse(msg);
				switch (data.op) {
					case 2:
						self.vWSData = data.d;

						KAI = setInterval(function () {
							vWS.send(JSON.stringify({
								op: 3,
								d: null
							}));
						}, data.d.heartbeat_interval);

						var udpPacket = new Buffer(70);
						udpPacket.writeUIntBE(data.d.ssrc, 0, 4);
						udpClient.send(udpPacket, 0, udpPacket.length, data.d.port, self.endpoint, function (err) {
							console.log("err", err);
						});
						break;
					case 4:

						self.ready = true;
						self.mode = data.d.mode;
						console.log("ready!!!");

						self.test();

						break;
				}
			});
		});
	};

	return VoiceConnection;
})();

module.exports = VoiceConnection;