From 2e1ea379c3858f960c7e2402ac20722b43b2002d Mon Sep 17 00:00:00 2001
From: olly <olly@google.com>
Date: Thu, 23 May 2019 10:56:58 +0100
Subject: [PATCH] Fix IndexOutOfBounds when there are no available codecs

PiperOrigin-RevId: 249610014
---
 .../exoplayer2/mediacodec/MediaCodecRenderer.java        | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java
index f7855810d4..be08186dc0 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java
@@ -53,7 +53,6 @@ import java.lang.annotation.RetentionPolicy;
 import java.nio.ByteBuffer;
 import java.util.ArrayDeque;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.List;
 
 /**
@@ -742,11 +741,11 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
       try {
         List<MediaCodecInfo> allAvailableCodecInfos =
             getAvailableCodecInfos(mediaCryptoRequiresSecureDecoder);
+        availableCodecInfos = new ArrayDeque<>();
         if (enableDecoderFallback) {
-          availableCodecInfos = new ArrayDeque<>(allAvailableCodecInfos);
-        } else {
-          availableCodecInfos =
-              new ArrayDeque<>(Collections.singletonList(allAvailableCodecInfos.get(0)));
+          availableCodecInfos.addAll(allAvailableCodecInfos);
+        } else if (!allAvailableCodecInfos.isEmpty()) {
+          availableCodecInfos.add(allAvailableCodecInfos.get(0));
         }
         preferredDecoderInitializationException = null;
       } catch (DecoderQueryException e) {