Adding volume wrapper

lib/Voice/VoiceConnection.js

@@ -117,17 +117,19 @@ var VoiceConnection = (function (_EventEmitter) {
 	VoiceConnection.prototype.playStream = function playStream(stream) {
 		var channels = arguments.length <= 1 || arguments[1] === undefined ? 2 : arguments[1];
 
-		var self = this;
+		var self = this,
+		    startTime = Date.now(),
+		    count = 0,
+		    length = 20,
+		    retStream = new _StreamIntent2["default"](),
+		    onWarning = false,
+		    lastVolume = this.volume !== undefined ? this.volume.get() : 1;
 
-		var startTime = Date.now();
-		var count = 0;
+		this.volume = stream;
+		this.playing = true;
+		this.playingIntent = retStream;
 
-		var length = 20;
-
-		self.playing = true;
-		var retStream = new _StreamIntent2["default"]();
-		var onWarning = false;
-		self.playingIntent = retStream;
+		this.setVolume(lastVolume);
 
 		function send() {
 			if (!self.playingIntent || !self.playing) {
@@ -409,6 +411,30 @@ var VoiceConnection = (function (_EventEmitter) {
 		});
 	};
 
+	VoiceConnection.prototype.wrapVolume = function wrapVolume(stream) {
+		stream.pipe(this.volume);
+
+		return this.volume;
+	};
+
+	VoiceConnection.prototype.setVolume = function setVolume(volume) {
+		this.volume.set(volume);
+	};
+
+	VoiceConnection.prototype.getVolume = function getVolume() {
+		return this.volume.get();
+	};
+
+	VoiceConnection.prototype.mute = function mute() {
+		this.lastVolume = this.volume.get();
+		this.setVolume(0);
+	};
+
+	VoiceConnection.prototype.unmute = function unmute() {
+		this.setVolume(this.lastVolume);
+		this.lastVolume = undefined;
+	};
+
 	return VoiceConnection;
 })(_events2["default"]);