Fix DASH period duration reporting

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129787235

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

@@ -68,7 +68,7 @@ import java.util.List;
     this.eventDispatcher = eventDispatcher;
     this.elapsedRealtimeOffset = elapsedRealtimeOffset;
     this.manifestLoaderErrorThrower = manifestLoaderErrorThrower;
-    durationUs = manifest.dynamic ? C.UNSET_TIME_US : manifest.getPeriodDuration(index) * 1000;
+    durationUs = manifest.getPeriodDurationUs(index);
     period = manifest.getPeriod(index);
     trackGroups = buildTrackGroups(period);
   }
@@ -76,7 +76,7 @@ import java.util.List;
   public void updateManifest(DashManifest manifest, int index) {
     this.manifest = manifest;
     this.index = index;
-    durationUs = manifest.dynamic ? C.UNSET_TIME_US : manifest.getPeriodDuration(index) * 1000;
+    durationUs = manifest.getPeriodDurationUs(index);
     period = manifest.getPeriod(index);
     if (sampleStreams != null) {
       for (ChunkSampleStream<DashChunkSource> sampleStream : sampleStreams) {

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

@@ -168,7 +168,7 @@ public final class DashMediaSource implements MediaSource {
       long positionUs = seekWindow.endTimeUs - LIVE_EDGE_OFFSET_US;
       while (positionUs < 0 && periodIndex > seekWindow.startPeriodIndex) {
         periodIndex--;
-        positionUs += manifest.getPeriodDuration(periodIndex) * 1000;
+        positionUs += manifest.getPeriodDurationUs(periodIndex);
       }
       positionUs = Math.max(positionUs,
           periodIndex == seekWindow.startPeriodIndex ? seekWindow.startTimeUs : 0);
@@ -374,9 +374,9 @@ public final class DashMediaSource implements MediaSource {
     int periodCount = manifest.getPeriodCount();
     int lastPeriodIndex = periodCount - 1;
     PeriodSeekInfo firstPeriodSeekInfo = PeriodSeekInfo.createPeriodSeekInfo(manifest.getPeriod(0),
-        manifest.getPeriodDuration(0) * 1000);
+        manifest.getPeriodDurationUs(0));
     PeriodSeekInfo lastPeriodSeekInfo = PeriodSeekInfo.createPeriodSeekInfo(
-        manifest.getPeriod(lastPeriodIndex), manifest.getPeriodDuration(lastPeriodIndex) * 1000);
+        manifest.getPeriod(lastPeriodIndex), manifest.getPeriodDurationUs(lastPeriodIndex));
     long currentStartTimeUs;
     long currentEndTimeUs;
     if (manifest.dynamic && !lastPeriodSeekInfo.isIndexExplicit) {
@@ -505,7 +505,7 @@ public final class DashMediaSource implements MediaSource {
 
     @Override
     public long getPeriodDuration(int index) {
-      return manifest.getPeriodDuration(index);
+      return manifest.getPeriodDurationMs(index);
     }
 
     @Override

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

@@ -16,7 +16,6 @@
 package com.google.android.exoplayer2.source.dash;
 
 import android.os.SystemClock;
-import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.extractor.ChunkIndex;
 import com.google.android.exoplayer2.extractor.Extractor;
@@ -105,7 +104,7 @@ public class DefaultDashChunkSource implements DashChunkSource {
     this.periodIndex = periodIndex;
     this.elapsedRealtimeOffsetUs = elapsedRealtimeOffsetMs * 1000;
 
-    long periodDurationUs = getPeriodDurationUs();
+    long periodDurationUs = manifest.getPeriodDurationUs(periodIndex);
     List<Representation> representations = getRepresentations();
     representationHolders = new RepresentationHolder[trackSelection.length()];
     for (int i = 0; i < representationHolders.length; i++) {
@@ -119,7 +118,7 @@ public class DefaultDashChunkSource implements DashChunkSource {
     try {
       manifest = newManifest;
       periodIndex = newPeriodIndex;
-      long periodDurationUs = getPeriodDurationUs();
+      long periodDurationUs = manifest.getPeriodDurationUs(periodIndex);
       List<Representation> representations = getRepresentations();
       for (int i = 0; i < representationHolders.length; i++) {
         Representation representation = representations.get(trackSelection.getIndexInTrackGroup(i));
@@ -323,15 +322,6 @@ public class DefaultDashChunkSource implements DashChunkSource {
     }
   }
 
-  private long getPeriodDurationUs() {
-    long durationMs = manifest.getPeriodDuration(periodIndex);
-    if (durationMs == -1) {
-      return C.UNSET_TIME_US;
-    } else {
-      return durationMs * 1000;
-    }
-  }
-
   // Protected classes.
 
   protected static final class RepresentationHolder {

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

@@ -16,6 +16,7 @@
 package com.google.android.exoplayer2.source.dash.manifest;
 
 import android.net.Uri;
+import com.google.android.exoplayer2.C;
 import java.util.Collections;
 import java.util.List;
 
@@ -64,10 +65,15 @@ public class DashManifest {
     return periods.get(index);
   }
 
-  public final long getPeriodDuration(int index) {
+  public final long getPeriodDurationMs(int index) {
     return index == periods.size() - 1
         ? (duration == -1 ? -1 : duration - periods.get(index).startMs)
         : periods.get(index + 1).startMs - periods.get(index).startMs;
   }
 
+  public final long getPeriodDurationUs(int index) {
+    long durationMs = getPeriodDurationMs(index);
+    return durationMs == -1 ? C.UNSET_TIME_US : durationMs * 1000;
+  }
+
 }

library/src/main/java/com/google/android/exoplayer2/text/TextRenderer.java

@@ -107,6 +107,7 @@ public final class TextRenderer extends BaseRenderer implements Callback {
   protected void onStreamChanged(Format[] formats) throws ExoPlaybackException {
     if (decoder != null) {
       decoder.release();
+      nextInputBuffer = null;
     }
     decoder = decoderFactory.createDecoder(formats[0]);
   }