fixed safari support

fta.js

@@ -233,10 +233,13 @@ var FTAPlayer = (function () {
     FTAPlayer.prototype.play = function () {
         var _this = this;
         try {
-            this.ctx = new AudioContext();
+            this.ctx = new (window.AudioContext || window.webkitAudioContext)();
+            if (this.ctx == undefined) {
+                throw new Error("No audio support!");
+            }
         }
         catch (e) {
-            alert('No audio support');
+            alert(e.message);
             return;
         }
         this.audioNode = this.ctx.createScriptProcessor(0, 0, 2);

smith.js

@@ -250,10 +250,13 @@ var Player = (function () {
     Player.prototype.play = function () {
         var _this = this;
         try {
-            this.ctx = new AudioContext();
+            this.ctx = new (window.AudioContext || window.webkitAudioContext)();
+            if (this.ctx == undefined) {
+                throw new Error("No audio support!");
+            }
         }
         catch (e) {
-            alert('No audio support');
+            alert(e.message);
             return;
         }
         this.audioNode = this.ctx.createScriptProcessor(0, 0, 2);

src/ftaplayer.ts

@@ -68,9 +68,12 @@ class FTAPlayer {
 
   public play(): void {
     try {
-      this.ctx = new AudioContext();
+      this.ctx = new ((<any>window).AudioContext || (<any>window).webkitAudioContext)();
+      if (this.ctx == undefined) {
+        throw new Error("No audio support!");
+      }
     } catch (e) {
-      alert('No audio support');
+      alert(e.message);
       return;
     }
     this.audioNode = this.ctx.createScriptProcessor(0, 0, 2);

src/player.ts

@@ -85,9 +85,12 @@ class Player {
 
   public play(): void {
     try {
-      this.ctx = new AudioContext();
+      this.ctx = new ((<any>window).AudioContext || (<any>window).webkitAudioContext)();
+      if (this.ctx == undefined) {
+        throw new Error("No audio support!");
+      }
     } catch (e) {
-      alert('No audio support');
+      alert(e.message);
       return;
     }
     this.audioNode = this.ctx.createScriptProcessor(0, 0, 2);