From 97e66ef11bb46d06abc4849d3a2adce04ca45ff9 Mon Sep 17 00:00:00 2001
From: tonihei <tonihei@google.com>
Date: Mon, 23 Jul 2018 03:12:22 -0700
Subject: [PATCH] Update period index in DashMediaPeriod event dispatcher after
 manifest update.

Issue:#4492

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=205636634
---
 .../android/exoplayer2/source/dash/DashMediaPeriod.java  | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaPeriod.java b/library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaPeriod.java
index f500a53e10..1070038500 100644
--- a/library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaPeriod.java
+++ b/library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaPeriod.java
@@ -64,7 +64,6 @@ import java.util.List;
   private final DashChunkSource.Factory chunkSourceFactory;
   private final @Nullable TransferListener<? super DataSource> transferListener;
   private final int minLoadableRetryCount;
-  private final EventDispatcher eventDispatcher;
   private final long elapsedRealtimeOffset;
   private final LoaderErrorThrower manifestLoaderErrorThrower;
   private final Allocator allocator;
@@ -75,6 +74,7 @@ import java.util.List;
   private final IdentityHashMap<ChunkSampleStream<DashChunkSource>, PlayerTrackEmsgHandler>
       trackEmsgHandlerBySampleStream;
 
+  private EventDispatcher eventDispatcher;
   private @Nullable Callback callback;
   private ChunkSampleStream<DashChunkSource>[] sampleStreams;
   private EventSampleStream[] eventSampleStreams;
@@ -131,6 +131,13 @@ import java.util.List;
    */
   public void updateManifest(DashManifest manifest, int periodIndex) {
     this.manifest = manifest;
+    if (this.periodIndex != periodIndex) {
+      eventDispatcher =
+          eventDispatcher.withParameters(
+              /* windowIndex= */ 0,
+              eventDispatcher.mediaPeriodId.copyWithPeriodIndex(periodIndex),
+              manifest.getPeriod(periodIndex).startMs);
+    }
     this.periodIndex = periodIndex;
     playerEmsgHandler.updateManifest(manifest);
     if (sampleStreams != null) {