From 09d0f55666075df6a93696b2d7ed5d061e0c997f Mon Sep 17 00:00:00 2001
From: xdrm-brackets <doowap31@gmail.com>
Date: Fri, 6 Apr 2018 14:26:15 +0200
Subject: [PATCH] [lib.audio-manager] added pop() notification sound

---
 webpack/lib/audio-manager.js | 54 ++++++++++++++++++++++++++++++------
 1 file changed, 46 insertions(+), 8 deletions(-)

diff --git a/webpack/lib/audio-manager.js b/webpack/lib/audio-manager.js
index 76f31ae..eef3997 100644
--- a/webpack/lib/audio-manager.js
+++ b/webpack/lib/audio-manager.js
@@ -164,8 +164,7 @@ export default class AudioManager{
 	}
 
 
-
-	/* (2) Binds an input stream
+	/* (3) Binds an input stream
 	*
 	---------------------------------------------------------*/
 	bindRecorderStream(_stream){
@@ -182,7 +181,7 @@ export default class AudioManager{
 	}
 
 
-	/* (3) Send chunks (Float32Array)
+	/* (4) Send chunks (Float32Array)
 	*
 	---------------------------------------------------------*/
 	send(_audioprocess){
@@ -202,7 +201,7 @@ export default class AudioManager{
 		this.dbg.data.kB_sent += buf16.length * 16. / 8 / 1024;
 	}
 
-	/* (4) Play received chunks (Int16Array)
+	/* (5) Play received chunks (Int16Array)
 	*
 	---------------------------------------------------------*/
 	receive(_buffer){
@@ -237,7 +236,7 @@ export default class AudioManager{
 	}
 
 
-	/* (4) Convert Float32Array to Int16Array
+	/* (6) Convert Float32Array to Int16Array
 	*
 	* @buf32<Float32Array>				Input
 	*
@@ -260,7 +259,7 @@ export default class AudioManager{
 	}
 
 
-	/* (2) Convert Int16Array to Float32Array
+	/* (7) Convert Int16Array to Float32Array
 	*
 	* @buf16<Int16Array>				Input
 	*
@@ -322,7 +321,7 @@ export default class AudioManager{
 
 
 
-	/* (x) Access microphone + launch all
+	/* (9) Access microphone + launch all
 	*
 	---------------------------------------------------------*/
 	launch(wsAddress='wss://ws.douscord.xdrm.io/audio/2'){
@@ -357,7 +356,7 @@ export default class AudioManager{
 	}
 
 
-	/* (x) Shut down microphone + kill all
+	/* (10) Shut down microphone + kill all
 	*
 	---------------------------------------------------------*/
 	kill(){
@@ -375,4 +374,43 @@ export default class AudioManager{
 
 
 
+	/* (11) Play a POP notification
+	*
+	---------------------------------------------------------*/
+	pop(){
+
+
+		/* (1) Base data */
+		let base_freq  = 150;
+		let mods       = [0, 75, 75]; // freq modulations (from base_freq)
+		let time_range = 0.05;         // time between each modulation
+		let start = this.ctx.currentTime + 0.1;
+
+		/* (2) Build oscillator */
+		let osc = this.ctx.createOscillator();
+		osc.type = 'triangle';
+
+		/* (3) Create local gain to lower volume */
+		let local = this.ctx.createGain();
+		local.gain.setValueAtTime(0.3, 0);
+
+		/* (4) Connect all nodes to output */
+		osc.connect(local);
+		local.connect(this.master);
+
+		/* (5) Bind frequencies over time */
+		for( let i in mods )
+			osc.frequency.setValueAtTime(base_freq+mods[i], start + i*time_range );
+
+		/* (6) Start playing */
+		osc.start( start );
+
+		/* (7) Set when to stop playing */
+		osc.stop( start + time_range*mods.length );
+
+	}
+
+
+
+
 }
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