Account for segmentStartTime in vtt segments to handle live

Closes shaka-project#480
sanbornhilland · Aug 9, 2016 · 8a3b5e5 · 8a3b5e5
1 parent 2aef261
commit 8a3b5e5
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/lib/media/vtt_text_parser.js b/lib/media/vtt_text_parser.js
@@ -47,7 +47,7 @@ shaka.media.VttTextParser = function(data, segmentStartTime, segmentEndTime) {
   var ret = [];
   for (var i = 1; i < blocks.length; i++) {
     var lines = blocks[i].split('\n');
-    var cue = shaka.media.VttTextParser.parseCue_(lines);
+    var cue = shaka.media.VttTextParser.parseCue_(lines, segmentStartTime);
     if (cue)
       ret.push(cue);
   }
@@ -60,10 +60,11 @@ shaka.media.VttTextParser = function(data, segmentStartTime, segmentEndTime) {
  * Parses a text block into a Cue object.
  *
  * @param {!Array.<string>} text
+ * @param {?number} segmentStartTime
  * @return {?TextTrackCue}
  * @private
  */
-shaka.media.VttTextParser.parseCue_ = function(text) {
+shaka.media.VttTextParser.parseCue_ = function(text, segmentStartTime) {
   // Skip empty blocks.
   if (text.length == 1 && !text[0])
     return null;
@@ -81,9 +82,9 @@ shaka.media.VttTextParser.parseCue_ = function(text) {
 
   // Parse the times.
   var parser = new shaka.util.TextParser(text[0]);
-  var start = shaka.media.VttTextParser.parseTime_(parser);
+  var start = shaka.media.VttTextParser.parseTime_(parser) + segmentStartTime;
   var expect = parser.readRegex(/[ \t]+-->[ \t]+/g);
-  var end = shaka.media.VttTextParser.parseTime_(parser);
+  var end = shaka.media.VttTextParser.parseTime_(parser) + segmentStartTime;
 
 
   if (start == null || expect == null || end == null) {