getRepresentationsForAdaptation optimization

Dash-Industry-Forum · Feb 28, 2018 · 2945b90 · 2945b90
1 parent 25f38ef
commit 2945b90
Show file tree

Hide file tree

Showing 2 changed files with 6 additions and 3 deletions.
diff --git a/src/dash/models/DashManifestModel.js b/src/dash/models/DashManifestModel.js
@@ -392,7 +392,7 @@ function DashManifestModel(config) {
             isInteger(index) ? adaptation.Representation_asArray[index] : null;
     }
 
-    function getRepresentationsForAdaptation(voAdaptation) {
+    function getRepresentationsForAdaptation(voAdaptation, maxRepresentations) {
         const voRepresentations = [];
         let voRepresentation,
             initialization,
@@ -410,7 +410,10 @@ function DashManifestModel(config) {
         }
 
         if (processedRealAdaptation && processedRealAdaptation.Representation_asArray) {
-            for (i = 0; processedRealAdaptation && i < processedRealAdaptation.Representation_asArray.length; i++) {
+            if (!maxRepresentations) {
+                maxRepresentations = processedRealAdaptation.Representation_asArray.length;
+            }
+            for (i = 0; i < maxRepresentations; ++i) {
                 realRepresentation = processedRealAdaptation.Representation_asArray[i];
                 voRepresentation = new Representation();
                 voRepresentation.index = i;

diff --git a/src/streaming/controllers/StreamController.js b/src/streaming/controllers/StreamController.js
@@ -582,7 +582,7 @@ function StreamController() {
 
             if (mediaInfo) {
                 voAdaptation = adapter.getDataForMedia(mediaInfo);
-                useCalculatedLiveEdgeTime = dashManifestModel.getRepresentationsForAdaptation(voAdaptation)[0].useCalculatedLiveEdgeTime;
+                useCalculatedLiveEdgeTime = dashManifestModel.getRepresentationsForAdaptation(voAdaptation, 1)[0].useCalculatedLiveEdgeTime;
 
                 if (useCalculatedLiveEdgeTime) {
                     log('SegmentTimeline detected using calculated Live Edge Time');