firstHEADmaster

1 files changed, 83 insertions, 0 deletions

diff --git a/view/poc/class/playList.js b/view/poc/class/playList.js
new file mode 100644
index 0000000..b161ce8
--- /dev/null
+++ b/view/poc/class/playList.js
@@ -0,0 +1,83 @@
+var PlayList=function(el){
+    var playList= el,
+        files={},
+        list=[],
+        loops=4,
+        status  = {
+            playing     : false,
+            current     : 0,
+            currentLoop : 0
+        },
+        audioBuffer = null;
+    
+    window.AudioContext = window.AudioContext || window.webkitAudioContext;
+    var context = new AudioContext();
+    
+    function addItem(data){
+        list.push(data.url);
+        playList.innerHTML+='<li>'+
+            data.url+
+        '</li>';
+        
+        if(!status.playing)
+            play(data.url);
+    }
+    
+    function play(data){
+        audioBuffer = context.createBufferSource();
+        audioBuffer.buffer=(typeof data=='string')? 
+            (
+                function(){
+                    status.currentLoop=0;
+                    return files[data];
+                }
+            )():data;
+        audioBuffer.connect(context.destination);
+        status.playing=true;
+        audioBuffer.start(0);
+        audioBuffer.onended=function(){
+            status.currentLoop++;
+            if(status.currentLoop>=loops){
+                status.playing=false;
+                next();
+                return;
+            }
+            play(this.buffer);
+        }
+    }
+    
+    function next(){
+        var count   = list.length;
+        status.current++;
+        if(status.current>=count)
+            status.current=0;
+        if(!status.playing)
+            play(list[status.current]);
+    }
+    
+    function recievedAudio(data){
+        if(files[data.url]){
+            data.file=null;
+            addItem(data);
+            return;
+        }
+        
+        var audioBinary=Base64Binary.decodeArrayBuffer(data.file);
+        context.decodeAudioData(
+            audioBinary,
+            function(buffer) {
+                files[data.url]=buffer;
+                data.file=null;
+                addItem(data);
+            }
+        );
+    }
+    
+    return {
+        add : addItem,
+        is  : status,
+        on  : {
+            add:recievedAudio
+        }
+    }
+}
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