possible to decode portions, possible to find out how much is still available for one stream decoding

index.html

@@ -12,41 +12,49 @@
   <script src="wrapper.js"></script>
     <input type="file" id="file" name="file" />
   <script>
+    var time = 0;
+    var ctx = new AudioContext();
+    ctx.suspend();
+    var decoder;
     function onChange(e) {
         var file = e.target.files[0];
         
         var reader = new FileReader();
         reader.onload = function(e) {
+            decoder = new Module.Decoder();
             var buffer = reader.result;
             var src = new Uint8Array(buffer);
             var ptr = Module._malloc(buffer.byteLength);
             var arr = new Uint8Array(Module.HEAPU8.buffer, ptr, buffer.byteLength);
-            var ctx = new AudioContext();
-            var time = 0;
             arr.set(src, 0);
             
-            var decoder = new Module.Decoder();
             decoder.addFragment(ptr, buffer.byteLength);
-            
-            while (decoder.hasMore()) {
-                var audio = decoder.decode(1);
-                if (audio === undefined) {
-                    if (decoder.hasMore() === false) {
-                        break;
-                    }
-                }
+            schedule();
+            ctx.resume();
+        }
+        reader.readAsArrayBuffer(file);
+        
+    }
+    
+    function schedule() {
+        if (decoder.hasMore()) {
+            var audio = decoder.decode(50);
+            if (audio) {
                 var source = ctx.createBufferSource();
                 source.buffer = audio;
                 source.connect(ctx.destination);
                 source.start(time);
                 time += audio.duration;
+                
+                setTimeout(schedule, Math.floor(audio.duration * 200));
+            } else {
+                decoder.delete();
             }
-            
+        } else {
             decoder.delete();
         }
-        reader.readAsArrayBuffer(file);
-        
     }
+    
     document.getElementById("file").addEventListener("change", onChange, false);
   </script>
   </body>