From 4e10c41bcc99bb283bcf815d24301bf4e6b940d3 Mon Sep 17 00:00:00 2001
From: samrobinson <samrobinson@google.com>
Date: Wed, 27 Sep 2023 03:28:33 -0700
Subject: [PATCH] Throw Exception if posting to application handler fails.

PiperOrigin-RevId: 568799683
---
 .../transformer/TransformerInternal.java      | 28 ++++++++++---------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/libraries/transformer/src/main/java/androidx/media3/transformer/TransformerInternal.java b/libraries/transformer/src/main/java/androidx/media3/transformer/TransformerInternal.java
index ecf72f6300..454372804c 100644
--- a/libraries/transformer/src/main/java/androidx/media3/transformer/TransformerInternal.java
+++ b/libraries/transformer/src/main/java/androidx/media3/transformer/TransformerInternal.java
@@ -399,23 +399,25 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
         return;
       }
       ExportException finalException = exception;
-      applicationHandler.post(
-          () ->
-              listener.onError(
-                  processedInputsBuilder.build(),
-                  encoderFactory.getAudioEncoderName(),
-                  encoderFactory.getVideoEncoderName(),
-                  finalException));
+      checkState(
+          applicationHandler.post(
+              () ->
+                  listener.onError(
+                      processedInputsBuilder.build(),
+                      encoderFactory.getAudioEncoderName(),
+                      encoderFactory.getVideoEncoderName(),
+                      finalException)));
     } else {
       if (releasedPreviously) {
         return;
       }
-      applicationHandler.post(
-          () ->
-              listener.onCompleted(
-                  processedInputsBuilder.build(),
-                  encoderFactory.getAudioEncoderName(),
-                  encoderFactory.getVideoEncoderName()));
+      checkState(
+          applicationHandler.post(
+              () ->
+                  listener.onCompleted(
+                      processedInputsBuilder.build(),
+                      encoderFactory.getAudioEncoderName(),
+                      encoderFactory.getVideoEncoderName())));
     }
   }