From f21cdcb9c5ea49c603f1ac3189604ff1cb0af1c7 Mon Sep 17 00:00:00 2001
From: eguven <eguven@google.com>
Date: Fri, 10 Mar 2017 05:54:25 -0800
Subject: [PATCH] Allow null DataSink.Factory in CacheDataSourceFactory

CacheDataSource allows null DataSink. Do the same in CacheDataSourceFactory.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=149750696
---
 .../exoplayer2/upstream/cache/CacheDataSourceFactory.java      | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/library/src/main/java/com/google/android/exoplayer2/upstream/cache/CacheDataSourceFactory.java b/library/src/main/java/com/google/android/exoplayer2/upstream/cache/CacheDataSourceFactory.java
index f280cc050b..b6fa3b4e2c 100644
--- a/library/src/main/java/com/google/android/exoplayer2/upstream/cache/CacheDataSourceFactory.java
+++ b/library/src/main/java/com/google/android/exoplayer2/upstream/cache/CacheDataSourceFactory.java
@@ -68,7 +68,8 @@ public final class CacheDataSourceFactory implements DataSource.Factory {
   public CacheDataSource createDataSource() {
     return new CacheDataSource(cache, upstreamFactory.createDataSource(),
         cacheReadDataSourceFactory.createDataSource(),
-        cacheWriteDataSinkFactory.createDataSink(), flags, eventListener);
+        cacheWriteDataSinkFactory != null ? cacheWriteDataSinkFactory.createDataSink() : null,
+        flags, eventListener);
   }
 
 }