rebuild lib with reference example fix #320

Author: therewasaguy

lib/p5.sound.js

@@ -1,4 +1,4 @@
-/*! p5.sound.js v0.3.9 2018-09-08 */
+/*! p5.sound.js v0.3.9 2018-09-10 */
 /**
  *  p5.sound extends p5 with <a href="http://caniuse.com/audio-api"
  *  target="_blank">Web Audio</a> functionality including audio input,
@@ -1060,15 +1060,21 @@ soundfile = function () {
       request.onload = function () {
         if (request.status === 200) {
           // on sucess loading file:
+          if (!self.panner)
+            return;
           ac.decodeAudioData(request.response, // success decoding buffer:
           function (buff) {
+            if (!self.panner)
+              return;
             self.buffer = buff;
             self.panner.inputChannels(buff.numberOfChannels);
             if (callback) {
               callback(self);
             }
           }, // error decoding buffer. "e" is undefined in Chrome 11/22/2015
           function () {
+            if (!self.panner)
+              return;
             var err = new CustomError('decodeAudioData', errorTrace, self.url);
             var msg = 'AudioContext error at decodeAudioData for ' + self.url;
             if (errorCallback) {
@@ -1079,6 +1085,8 @@ soundfile = function () {
             }
           });
         } else {
+          if (!self.panner)
+            return;
           var err = new CustomError('loadSound', errorTrace, self.url);
           var msg = 'Unable to load ' + self.url + '. The request status was: ' + request.status + ' (' + request.statusText + ')';
           if (errorCallback) {
@@ -1104,7 +1112,11 @@ soundfile = function () {
     } else if (this.file !== undefined) {
       var reader = new FileReader();
       reader.onload = function () {
+        if (!self.panner)
+          return;
         ac.decodeAudioData(reader.result, function (buff) {
+          if (!self.panner)
+            return;
           self.buffer = buff;
           self.panner.inputChannels(buff.numberOfChannels);
           if (callback) {
@@ -1113,6 +1125,8 @@ soundfile = function () {
         });
       };
       reader.onerror = function (e) {
+        if (!self.panner)
+          return;
         if (onerror) {
           onerror(e);
         }
@@ -2012,6 +2026,8 @@ soundfile = function () {
     // Render the song
     // act on the result
     offlineContext.oncomplete = function (e) {
+      if (!self.panner)
+        return;
       var filteredBuffer = e.renderedBuffer;
       var bufferData = filteredBuffer.getChannelData(0);
       // step 1:
@@ -2306,9 +2322,10 @@ soundfile = function () {
    *  <div><code>
    *  var inp, button, mySound;
    *  var fileName = 'cool';
-   *  function setup() {
+   *  function preload() {
    *    mySound = loadSound('assets/doorbell.mp3');
-   *
+   *  }
+   *  function setup() {
    *    btn = createButton('click to save file');
    *    btn.position(0, 0);
    *    btn.mouseClicked(handleMouseClick);