Fix period durations for single period and concatenated timelines.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129748865

library/src/main/java/com/google/android/exoplayer2/ExoPlayerImplInternal.java

@@ -554,6 +554,7 @@ import java.util.ArrayList;
 
 
     stopRenderers();
     stopRenderers();
     rebuffering = false;
     rebuffering = false;
+    setState(ExoPlayer.STATE_BUFFERING);
 
 
     if (positionUs == C.UNSET_TIME_US) {
     if (positionUs == C.UNSET_TIME_US) {
       // We don't know where to seek to yet, so clear the whole timeline.
       // We don't know where to seek to yet, so clear the whole timeline.
@@ -606,7 +607,6 @@ import java.util.ArrayList;
       }
       }
     }
     }
     updatePlaybackPositions();
     updatePlaybackPositions();
-    setState(ExoPlayer.STATE_BUFFERING);
     handler.sendEmptyMessage(MSG_DO_SOME_WORK);
     handler.sendEmptyMessage(MSG_DO_SOME_WORK);
   }
   }
 
 

library/src/main/java/com/google/android/exoplayer2/source/ConcatenatingMediaSource.java

@@ -154,7 +154,8 @@ public final class ConcatenatingMediaSource implements MediaSource {
     @Override
     @Override
     public long getPeriodDuration(int index) {
     public long getPeriodDuration(int index) {
       int sourceIndex = getSourceIndexForPeriod(index);
       int sourceIndex = getSourceIndexForPeriod(index);
-      return timelines[sourceIndex].getPeriodDuration(sourceIndex);
+      int firstPeriodIndexInSource = getFirstPeriodIndexInSource(sourceIndex);
+      return timelines[sourceIndex].getPeriodDuration(index - firstPeriodIndexInSource);
     }
     }
 
 
     @Override
     @Override

library/src/main/java/com/google/android/exoplayer2/source/SinglePeriodTimeline.java

@@ -41,7 +41,7 @@ public final class SinglePeriodTimeline implements Timeline {
    * @return A new, unseekable, final timeline with one period.
    * @return A new, unseekable, final timeline with one period.
    */
    */
   public static Timeline createUnseekableFinalTimeline(Object id, long durationUs) {
   public static Timeline createUnseekableFinalTimeline(Object id, long durationUs) {
-    return new SinglePeriodTimeline(id, true, durationUs, SeekWindow.UNSEEKABLE);
+    return new SinglePeriodTimeline(id, true, durationUs / 1000, SeekWindow.UNSEEKABLE);
   }
   }
 
 
   /**
   /**
@@ -53,19 +53,19 @@ public final class SinglePeriodTimeline implements Timeline {
    * @return A new, seekable, final timeline with one period.
    * @return A new, seekable, final timeline with one period.
    */
    */
   public static Timeline createSeekableFinalTimeline(Object id, long durationUs) {
   public static Timeline createSeekableFinalTimeline(Object id, long durationUs) {
-    return new SinglePeriodTimeline(id, true, durationUs, new SeekWindow(durationUs));
+    return new SinglePeriodTimeline(id, true, durationUs / 1000, new SeekWindow(durationUs));
   }
   }
 
 
   private final Object id;
   private final Object id;
   private final boolean isFinal;
   private final boolean isFinal;
-  private final long duration;
+  private final long durationMs;
   private final SeekWindow[] seekWindows;
   private final SeekWindow[] seekWindows;
 
 
-  private SinglePeriodTimeline(Object id, boolean isFinal, long duration,
+  private SinglePeriodTimeline(Object id, boolean isFinal, long durationMs,
       SeekWindow... seekWindows) {
       SeekWindow... seekWindows) {
     this.id = Assertions.checkNotNull(id);
     this.id = Assertions.checkNotNull(id);
     this.isFinal = isFinal;
     this.isFinal = isFinal;
-    this.duration = duration;
+    this.durationMs = durationMs;
     this.seekWindows = seekWindows;
     this.seekWindows = seekWindows;
   }
   }
 
 
@@ -84,7 +84,7 @@ public final class SinglePeriodTimeline implements Timeline {
     if (index != 0) {
     if (index != 0) {
       throw new IndexOutOfBoundsException("Index " + index + " out of bounds");
       throw new IndexOutOfBoundsException("Index " + index + " out of bounds");
     }
     }
-    return duration;
+    return durationMs;
   }
   }
 
 
   @Override
   @Override