WTF - Chromecast PlayReady

Change-Id: I6bfc7d7d7e544f27b901115c0ba98c75386f75ea

Author: joeyparrish

lib/media/drm_engine.js

@@ -1041,11 +1041,10 @@ shaka.media.DrmEngine.prototype.unpackPlayReadyRequest_ = function(request) {
   var dom = new DOMParser().parseFromString(xml, 'application/xml');
 
   if (dom.querySelector('parsererror')) {
-    // The document was not valid XML.
-    // Assume this does not need to be unpacked.
+    // UTF-16 intepretation did not produce a valid document.  Try UTF-8.
     // This is the case with Chromecast's PlayReady implementation.
-    shaka.log.debug('Not unpacking PlayReady request.');
-    return;
+    xml = shaka.util.StringUtils.fromUTF8(request.body);
+    dom = new DOMParser().parseFromString(xml, 'application/xml');
   }
 
   // Set request headers.