Fix/filtering (Dash-Industry-Forum#4637)

* Fix an issue that causes DRM capabilities being compared to non DRM capabilities

* Fix an issue with WebM SegmentBase streams and Annex I handling

* Add Shaka teststream to smoke vector list

Author: dsilhavy

src/dash/WebmSegmentBaseLoader.js

@@ -344,7 +344,8 @@ function WebmSegmentBaseLoader() {
                 request: request,
                 url: media,
                 init: false,
-                mediaType: mediaType
+                mediaType: mediaType,
+                representation
             };
 
             request = _getFragmentRequest(info);

src/streaming/controllers/ExtUrlQueryInfoController.js

@@ -154,10 +154,14 @@ function ExtUrlQueryInfoController() {
     function getFinalQueryString(request) {
         try {
             if (!mpdQueryStringInformation) {
-                return
+                return null;
             }
             if (request.type === HTTPRequest.MEDIA_SEGMENT_TYPE || request.type === HTTPRequest.INIT_SEGMENT_TYPE) {
                 const representation = request.representation;
+
+                if (!representation) {
+                    return null;
+                }
                 const adaptation = representation.adaptation;
                 const period = adaptation.period;
                 const queryInfo = mpdQueryStringInformation

src/streaming/utils/Capabilities.js

@@ -344,13 +344,27 @@ function Capabilities() {
         }
 
         return testedCodecConfigurations.find((current) => {
-            const audioEqual = configuration && configuration.audio ? objectUtils.areEqual(configuration.audio, current.audio) : true;
-            const videoEqual = configuration && configuration.video ? objectUtils.areEqual(configuration.video, current.video) : true;
-            const keySystemEqual = configuration && configuration.keySystemConfiguration ? objectUtils.areEqual(configuration.keySystemConfiguration, current.keySystemConfiguration) : true;
+            const audioEqual = _isConfigEqual(configuration, current, Constants.AUDIO);
+            const videoEqual = _isConfigEqual(configuration, current, Constants.VIDEO);
+            const keySystemEqual = _isConfigEqual(configuration, current, 'keySystemConfiguration');
 
             return audioEqual && videoEqual && keySystemEqual
         })
+    }
+
+    function _isConfigEqual(configuration, current, attribute) {
+
+        // Config not present in both of them
+        if (!configuration[attribute] && !current[attribute]) {
+            return true
+        }
+
+        // Config present in both we need to compare
+        if (configuration[attribute] && current[attribute]) {
+            return objectUtils.areEqual(configuration[attribute], current[attribute])
+        }
 
+        return false
     }
 
     function _getGenericMediaCapabilitiesVideoConfig(inputConfig) {

test/functional/config/test-configurations/streams/smoke.json

@@ -55,6 +55,21 @@
         }
       ]
     },
+    {
+      "name": "Shaka Demo Assets: Angel-One Widevine",
+      "type": "vod",
+      "url": "https://storage.googleapis.com/shaka-demo-assets/angel-one-widevine/dash.mpd",
+      "drm": {
+        "com.widevine.alpha": {
+          "serverURL": "https://cwip-shaka-proxy.appspot.com/no_auth"
+        }
+      },
+      "excludedPlatforms": [
+        {
+          "browser": "safari"
+        }
+      ]
+    },
     {
       "name": "1080p with PlayReady and Widevine DRM, single key",
       "type": "vod",