4 files changed, 77 insertions, 0 deletions
diff --git a/bieber_backwards.mp3 b/bieber_backwards.mp3
new file mode 100644
index 0000000..5b20b6b
--- /dev/null
+++ b/bieber_backwards.mp3
diff --git a/index.html b/index.html
new file mode 100644
index 0000000..ee98701
--- /dev/null
+++ b/index.html
@@ -0,0 +1,3 @@
+<html>
+<script type="text/javascript" src="webaudio.js"></script>
+</html>
diff --git a/test.mp3 b/test.mp3
new file mode 100644
index 0000000..5b20b6b
--- /dev/null
+++ b/test.mp3
diff --git a/webaudio.js b/webaudio.js
new file mode 100644
index 0000000..71c1dc4
--- /dev/null
+++ b/webaudio.js
@@ -0,0 +1,74 @@
+//creating an audio context
+var context;
+var audioBuffer;
+window.addEventListener('load', init);    
+
+function init()
+{
+    try
+    {
+        window.AudioContext = window.AudioContext || window.webkitAudioContext;
+        context=new AudioContext();
+    }
+    catch(e)
+    {
+        alert("Your browser doesn't support Web Audio API");
+    }
+    initAudio();
+}
+
+function initAudio(){
+  console.log("audio ready");
+  console.log("inside audio initialized callback");
+  var url1 = "someurl"
+  var url2 = "someotherurl"
+  loadAndPlay(url1, function(){ 
+    loadAndPlay(url2, function(){
+      console.log("played both urls");
+    });
+  });
+
+
+}
+function loadAndPlay(url, callback) {
+    var audioURL=url;
+
+    //creating a new request
+    var request = new XMLHttpRequest();
+    request.open("GET",audioURL,true);
+    request.responseType= 'arraybuffer';
+    request.onload = function(){
+        //take the audio from http request and decode it in an audio buffer
+        context.decodeAudioData(request.response, function(buffer){
+          audioBuffer = buffer;
+          console.log(audioBuffer);
+          if(audioBuffer){  // check here
+            playSound(callback);
+          }
+        });
+
+    };
+
+    request.send();
+}
+
+//playing the audio file
+function playSound(callback) {
+
+    //creating source node
+    var source = context.createBufferSource();
+    //passing in file
+    source.buffer = audioBuffer;
+    source.onended = function(){
+      console.log("inside ended callback");
+      console.log("ended");
+      if (typeof(callback) != "undefined" ){
+        callback(); 
+      }
+    }
+    //start playing
+    source.connect(context.destination);  // added
+    source.start(0);
+    console.log('playing');
+
+}