Fix for https://github.com/zhukov/webogram/pull/840

patch.diff

diff --git a/app/js/directives.js b/app/js/directives.js
index dcf758f..8d79172 100755
--- a/app/js/directives.js
+++ b/app/js/directives.js
@@ -1356,6 +1356,7 @@ angular.module('myApp.directives', ['myApp.filters'])
       var stickerImageCompiled = $compile('<a class="composer_sticker_btn" data-sticker="{{::document.id}}" my-load-sticker document="document" thumb="true" img-class="composer_sticker_image"></a>');
       var cachedStickerImages = {};
       var audioRecorder = null;
+      var audioPromise = null;
       var audioStream = null;
 
       var emojiTooltip = new EmojiTooltip(emojiButton, {
@@ -1456,6 +1457,7 @@ angular.module('myApp.directives', ['myApp.filters'])
         navigator.getUserMedia = ( navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia);
 
         voiceRecord.on('touchstart', function(e) {
+          if ($scope.$parent.$parent.voiceRecorder.processing) { return; }
           navigator.getUserMedia({audio : true}, function(stream){
             var start = Date.now();
             var touch = null;
@@ -1491,7 +1493,7 @@ angular.module('myApp.directives', ['myApp.filters'])
           if (audioRecorder) {
             $scope.$parent.$parent.voiceRecorder.processing = true;
 
-            audioRecorder.ondataavailable = function(e){
+            audioPromise.then(function(e) {
               var blob = e.data;
 
               console.log(blob);
@@ -1500,12 +1502,16 @@ angular.module('myApp.directives', ['myApp.filters'])
 
               audioRecorder = null;
               $scope.$parent.$parent.voiceRecorder.processing = false;
-            }
+            });
           }
         });
 
         $($window).on('touchend', function(){
           if (audioRecorder) {
+            audioPromise = new Promise(function(resolve) {
+              audioRecorder.ondataavailable = resolve;
+            });
+
             audioRecorder.stop();
             audioStream.stop();

L17 also prevents a new recording from being started when previous audio is being processed.