Fetch next Dash manifest using URL in Location directive if exists

library/src/main/java/com/google/android/exoplayer/dash/DashChunkSource.java

@@ -298,6 +298,10 @@ public class DashChunkSource implements ChunkSource {
 
     if (finishedCurrentManifest && (android.os.SystemClock.elapsedRealtime()
         > manifestFetcher.getManifestLoadTimestamp() + minUpdatePeriod)) {
+      String newManifestURL = currentManifest.location;
+      if (newManifestURL != null) {
+          manifestFetcher.updateManifestUrl(newManifestURL);
+      }
       manifestFetcher.requestRefresh();
     }
   }
@@ -589,7 +593,7 @@ public class DashChunkSource implements ChunkSource {
         firstRepresentation.periodDurationMs, Collections.singletonList(adaptationSet));
     long duration = firstRepresentation.periodDurationMs - firstRepresentation.periodStartMs;
     return new MediaPresentationDescription(-1, duration, -1, false, -1, -1, null,
-        Collections.singletonList(period));
+        Collections.singletonList(period), null);
   }
 
   private static class RepresentationHolder {

library/src/main/java/com/google/android/exoplayer/dash/mpd/MediaPresentationDescription.java

@@ -39,9 +39,11 @@ public class MediaPresentationDescription {
 
   public final UtcTimingElement utcTiming;
 
+  public final String location;
+
   public MediaPresentationDescription(long availabilityStartTime, long duration, long minBufferTime,
       boolean dynamic, long minUpdatePeriod, long timeShiftBufferDepth, UtcTimingElement utcTiming,
-      List<Period> periods) {
+      List<Period> periods, String location) {
     this.availabilityStartTime = availabilityStartTime;
     this.duration = duration;
     this.minBufferTime = minBufferTime;
@@ -50,6 +52,7 @@ public class MediaPresentationDescription {
     this.timeShiftBufferDepth = timeShiftBufferDepth;
     this.utcTiming = utcTiming;
     this.periods = Collections.unmodifiableList(periods);
+    this.location = location;
   }
 
 }

library/src/main/java/com/google/android/exoplayer/dash/mpd/MediaPresentationDescriptionParser.java

@@ -111,6 +111,7 @@ public class MediaPresentationDescriptionParser extends DefaultHandler
     long timeShiftBufferDepthMs = (dynamic) ? parseDuration(xpp, "timeShiftBufferDepth", -1)
         : -1;
     UtcTimingElement utcTiming = null;
+    String location = null;
 
     List<Period> periods = new ArrayList<>();
     do {
@@ -121,19 +122,21 @@ public class MediaPresentationDescriptionParser extends DefaultHandler
         utcTiming = parseUtcTiming(xpp);
       } else if (isStartTag(xpp, "Period")) {
         periods.add(parsePeriod(xpp, baseUrl, durationMs));
+      } else if (isStartTag(xpp, "Location")) {
+          location = xpp.nextText();
       }
     } while (!isEndTag(xpp, "MPD"));
 
     return buildMediaPresentationDescription(availabilityStartTime, durationMs, minBufferTimeMs,
-        dynamic, minUpdateTimeMs, timeShiftBufferDepthMs, utcTiming, periods);
+        dynamic, minUpdateTimeMs, timeShiftBufferDepthMs, utcTiming, periods, location);
   }
 
   protected MediaPresentationDescription buildMediaPresentationDescription(
       long availabilityStartTime, long durationMs, long minBufferTimeMs, boolean dynamic,
       long minUpdateTimeMs, long timeShiftBufferDepthMs, UtcTimingElement utcTiming,
-      List<Period> periods) {
+      List<Period> periods, String location) {
     return new MediaPresentationDescription(availabilityStartTime, durationMs, minBufferTimeMs,
-        dynamic, minUpdateTimeMs, timeShiftBufferDepthMs, utcTiming, periods);
+        dynamic, minUpdateTimeMs, timeShiftBufferDepthMs, utcTiming, periods, location);
   }
 
   protected UtcTimingElement parseUtcTiming(XmlPullParser xpp) {