Support audio buffer as source

lib/buffer-source.js

@@ -135,23 +135,34 @@ function createBufferSource (src, opt) {
   return emitter
 
   function startLoad (src) {
-    xhrAudio(audioContext, src, function audioDecoded (err, decoded) {
-      if (err) return emitter.emit('error', err)
-      buffer = decoded // store for later use
-      if (bufferNode) {
-        // if play() was called early
-        bufferNode.buffer = buffer
-      }
-      duration = buffer.duration
-      node.buffer = buffer
-      emitter.emit('load')
-    }, function audioProgress (amount, total) {
-      emitter.emit('progress', amount, total)
-    }, function audioDecoding () {
+    if (typeof src.duration === 'number')
+      return audioDecoded(null, src);
+
+    xhrAudio(
+      audioContext,
+      src,
+      audioDecoded,
+      function audioProgress (amount, total)
+      {
+        emitter.emit('progress', amount, total)
+      }, function audioDecoding ()
+      {
       emitter.emit('decoding')
     })
   }
 
+  function audioDecoded (err, decoded) {
+    if (err) return emitter.emit('error', err)
+    buffer = decoded // store for later use
+    if (bufferNode) {
+      // if play() was called early
+      bufferNode.buffer = buffer
+    }
+    duration = buffer.duration
+    node.buffer = buffer
+    emitter.emit('load')
+  }
+
   function ended () {
     emitter.emit('end')
     playing = false

lib/can-play-src.js

@@ -4,6 +4,10 @@ var audio
 module.exports = isSrcPlayable
 function isSrcPlayable (src) {
   if (!src) throw new TypeError('src cannot be empty')
+
+  if (typeof src.duration === 'number')
+    return Boolean(true);
+
   var type
   if (typeof src.getAttribute === 'function') {
     // <source> element

package.json

@@ -1,6 +1,6 @@
 {
   "name": "web-audio-player",
-  "version": "1.3.1",
+  "version": "1.3.2",
   "description": "a cross-browser WebAudio player",
   "main": "index.js",
   "license": "MIT",