Don't resolve UtcTiming element for static manifests

It doesn't do anything useful in this case.

PiperOrigin-RevId: 223516909

library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaPeriod.java

@@ -65,7 +65,7 @@ import java.util.List;
   private final DashChunkSource.Factory chunkSourceFactory;
   private final @Nullable TransferListener transferListener;
   private final LoadErrorHandlingPolicy loadErrorHandlingPolicy;
-  private final long elapsedRealtimeOffset;
+  private final long elapsedRealtimeOffsetMs;
   private final LoaderErrorThrower manifestLoaderErrorThrower;
   private final Allocator allocator;
   private final TrackGroupArray trackGroups;
@@ -93,7 +93,7 @@ import java.util.List;
       @Nullable TransferListener transferListener,
       LoadErrorHandlingPolicy loadErrorHandlingPolicy,
       EventDispatcher eventDispatcher,
-      long elapsedRealtimeOffset,
+      long elapsedRealtimeOffsetMs,
       LoaderErrorThrower manifestLoaderErrorThrower,
       Allocator allocator,
       CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory,
@@ -105,7 +105,7 @@ import java.util.List;
     this.transferListener = transferListener;
     this.loadErrorHandlingPolicy = loadErrorHandlingPolicy;
     this.eventDispatcher = eventDispatcher;
-    this.elapsedRealtimeOffset = elapsedRealtimeOffset;
+    this.elapsedRealtimeOffsetMs = elapsedRealtimeOffsetMs;
     this.manifestLoaderErrorThrower = manifestLoaderErrorThrower;
     this.allocator = allocator;
     this.compositeSequenceableLoaderFactory = compositeSequenceableLoaderFactory;
@@ -593,7 +593,7 @@ import java.util.List;
             trackGroupInfo.adaptationSetIndices,
             selection,
             trackGroupInfo.trackType,
-            elapsedRealtimeOffset,
+            elapsedRealtimeOffsetMs,
             enableEventMessageTrack,
             enableCea608Track,
             trackPlayerEmsgHandler,

library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaSource.java

@@ -710,17 +710,17 @@ public final class DashMediaSource extends BaseMediaSource {
         loadable.bytesLoaded());
     DashManifest newManifest = loadable.getResult();
 
-    int periodCount = manifest == null ? 0 : manifest.getPeriodCount();
+    int oldPeriodCount = manifest == null ? 0 : manifest.getPeriodCount();
     int removedPeriodCount = 0;
     long newFirstPeriodStartTimeMs = newManifest.getPeriod(0).startMs;
-    while (removedPeriodCount < periodCount
+    while (removedPeriodCount < oldPeriodCount
         && manifest.getPeriod(removedPeriodCount).startMs < newFirstPeriodStartTimeMs) {
       removedPeriodCount++;
     }
 
     if (newManifest.dynamic) {
       boolean isManifestStale = false;
-      if (periodCount - removedPeriodCount > newManifest.getPeriodCount()) {
+      if (oldPeriodCount - removedPeriodCount > newManifest.getPeriodCount()) {
         // After discarding old periods, we should never have more periods than listed in the new
         // manifest. That would mean that a previously announced period is no longer advertised. If
         // this condition occurs, assume that we are hitting a manifest server that is out of sync
@@ -770,8 +770,8 @@ public final class DashMediaSource extends BaseMediaSource {
       }
     }
 
-    if (periodCount == 0) {
-      if (manifest.utcTiming != null) {
+    if (oldPeriodCount == 0) {
+      if (manifest.dynamic && manifest.utcTiming != null) {
         resolveUtcTimingElement(manifest.utcTiming);
       } else {
         processManifest(true);