Rename airtime_mvc/ to legacy/

legacy/public/js/waveformplaylist/loader.js

@@ -0,0 +1,86 @@
+'use strict';
+
+var BufferLoader = function() {
+
+}
+
+BufferLoader.prototype.init = function(params) {
+
+    var loader = this;
+    loader.context = params.context;
+    loader.bufferList = [];
+    loader.loadCount = 0;
+
+    loader.defaultParams = {
+        
+    };
+
+    loader.params = Object.create(params);
+    Object.keys(loader.defaultParams).forEach(function (key) {
+        if (!(key in params)) { params[key] = loader.defaultParams[key]; }
+    });
+}
+
+BufferLoader.prototype.requestBuffer = function(url, name) {
+    var loader = this,
+        request = new XMLHttpRequest();
+
+    request.open("GET", url, true);
+    request.responseType = "arraybuffer";
+    
+    request.onload = function() {
+        loader.context.decodeAudioData(request.response, function(buffer) {
+            if (!buffer) {
+                alert('error decoding file data: '+url);
+                return;
+            }
+
+            loader.loadCount++;
+            loader.onAudioFileLoad(name, buffer);
+
+            if (loader.loadCount === loader.urlList.length) {
+                loader.onAudioFilesDone(loader.bufferList);
+            }
+        },
+        function(error) {
+            console.error('decodeAudioData error',error);
+        });
+    }
+
+    request.onerror = function(){
+        alert('BufferLoader: XHR error');
+    };
+
+    request.send();
+};
+
+BufferLoader.prototype.loadAudio = function(aUrls, callback) {
+
+    var names=[];
+    var paths=[];
+
+    for (var name in aUrls) {
+        var path = aUrls[name];
+        names.push(name);
+        paths.push(path);
+    }
+
+    this.urlList = paths;
+
+    var i, 
+        length;
+
+    for (i = 0, length = paths.length; i < length; i++) {
+        this.requestBuffer(paths[i], names[i]);
+    }  
+}
+
+BufferLoader.prototype.onAudioFileLoad = function(name, buffer) {
+
+    this.bufferList[name] = buffer;
+}
+
+BufferLoader.prototype.onAudioFilesDone = function(bufferList) {
+    var fn = this.params.onComplete;
+    fn(bufferList);
+}