From 3e98007608ed0ab31192f82404ba81ebe4fe40ed Mon Sep 17 00:00:00 2001
From: Frank Huang <fhuang.work@gmail.com>
Date: Sat, 19 Mar 2016 20:28:33 +0000
Subject: [PATCH] Support 'JUNK' data block in RIFF specification.

---
 lib/reader.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/reader.js b/lib/reader.js
index f644e16..84c2e4e 100644
--- a/lib/reader.js
+++ b/lib/reader.js
@@ -102,11 +102,20 @@ Reader.prototype._onSubchunk1ID = function (chunk) {
   this.chunkId = subchunk1ID;
   if ('fmt ' === subchunk1ID) {
     this._bytes(4, this._onSubchunk1Size);
+  } else if ('JUNK' === subchunk1ID) {
+    this._bytes(4, this._onJUNK);
   } else {
     this.emit('error', new Error(f('bad "fmt id": expected "fmt ", got %j', subchunk1ID)));
   }
 };
 
+Reader.prototype._onJUNK = function (chunk) {
+  var junkSize = chunk['readUInt32' + this.endianness](0);
+  this._bytes(junkSize, function() {
+    this._bytes(4, this._onSubchunk1ID);
+  });
+}
+
 Reader.prototype._onSubchunk1Size = function (chunk) {
   debug('onSubchunk1Size: %o', chunk);
   this.subchunk1Size = chunk['readUInt32' + this.endianness](0);