From c11b5cf91c7f3f3e42aa6f3d62b51d6a812be799 Mon Sep 17 00:00:00 2001
From: Googler <noreply@google.com>
Date: Wed, 16 Nov 2022 18:07:00 +0000
Subject: [PATCH] Fix NPE when listener is not set

PiperOrigin-RevId: 488970696
(cherry picked from commit f3ed9e359dfdff2a99bf8766ffceb59a93d1bc93)
---
 .../androidx/media3/exoplayer/audio/DefaultAudioSink.java | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/DefaultAudioSink.java b/libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/DefaultAudioSink.java
index bd77a50cac..9ca07c700a 100644
--- a/libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/DefaultAudioSink.java
+++ b/libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/DefaultAudioSink.java
@@ -1000,9 +1000,11 @@ public final class DefaultAudioSink implements AudioSink {
                   getSubmittedFrames() - trimmingAudioProcessor.getTrimmedFrameCount());
       if (!startMediaTimeUsNeedsSync
           && Math.abs(expectedPresentationTimeUs - presentationTimeUs) > 200000) {
-        listener.onAudioSinkError(
-            new AudioSink.UnexpectedDiscontinuityException(
-                presentationTimeUs, expectedPresentationTimeUs));
+        if (listener != null) {
+          listener.onAudioSinkError(
+              new AudioSink.UnexpectedDiscontinuityException(
+                  presentationTimeUs, expectedPresentationTimeUs));
+        }
         startMediaTimeUsNeedsSync = true;
       }
       if (startMediaTimeUsNeedsSync) {