From 3facfbf542afc6ee54eb125c4e699c35242708ec Mon Sep 17 00:00:00 2001
From: ibaker <ibaker@google.com>
Date: Wed, 18 Sep 2024 01:57:21 -0700
Subject: [PATCH] Assert `baseDataSourceFactory` non-null in
 `DefaultDataSource.Factory`

This gives a faster/clearer failure for Issue: androidx/media#1718.

PiperOrigin-RevId: 675896262
---
 .../main/java/androidx/media3/datasource/DefaultDataSource.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/datasource/src/main/java/androidx/media3/datasource/DefaultDataSource.java b/libraries/datasource/src/main/java/androidx/media3/datasource/DefaultDataSource.java
index 09892d3ac8..eb6c182c07 100644
--- a/libraries/datasource/src/main/java/androidx/media3/datasource/DefaultDataSource.java
+++ b/libraries/datasource/src/main/java/androidx/media3/datasource/DefaultDataSource.java
@@ -87,7 +87,7 @@ public final class DefaultDataSource implements DataSource {
      */
     public Factory(Context context, DataSource.Factory baseDataSourceFactory) {
       this.context = context.getApplicationContext();
-      this.baseDataSourceFactory = baseDataSourceFactory;
+      this.baseDataSourceFactory = Assertions.checkNotNull(baseDataSourceFactory);
     }
 
     /**