From fcc66df9452eb4a263da6dbcfec81e06d5a59088 Mon Sep 17 00:00:00 2001
From: Armands Malejev <armands.malejevs@gmail.com>
Date: Thu, 24 Jun 2021 08:00:38 +0300
Subject: [PATCH] Fix AudoFocus pausing video when attempting to play (#2311)

Fix AudioFocus bug that could cause the player to stop responding to play/pause in some instances.

Fixes issue #1945

This was caused by the player requesting audio focus on each play (un-pause) and that resulted in a small window of Audio focus loss and then gain. The focus loss results in the player being paused while the player was supposed to play at the time. The solution is to keep track of Audio focus and not request new focus if we already have it.
---
 CHANGELOG.md                                             | 2 ++
 .../com/brentvatne/exoplayer/ReactExoplayerView.java     | 9 ++++++---
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index b717fa0c..5f0646fa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## Changelog
 
+- Fix Android AudioFocus bug that could cause player to not respond to play/pause in some instances [#2311](https://github.com/react-native-video/react-native-video/pull/2311)
+
 ### Version 5.1.0-alpha9
 
 - Add ARM64 support for windows [#2137](https://github.com/react-native-community/react-native-video/pull/2137)
diff --git a/android-exoplayer/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java b/android-exoplayer/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java
index b41b2768..20ce983a 100644
--- a/android-exoplayer/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java
+++ b/android-exoplayer/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java
@@ -122,6 +122,7 @@ class ReactExoplayerView extends FrameLayout implements
     private boolean isPaused;
     private boolean isBuffering;
     private boolean muted = false;
+    private boolean hasAudioFocus = false;
     private float rate = 1f;
     private float audioVolume = 1f;
     private int minLoadRetryCount = 3;
@@ -567,7 +568,7 @@ class ReactExoplayerView extends FrameLayout implements
     }
 
     private boolean requestAudioFocus() {
-        if (disableFocus || srcUri == null) {
+        if (disableFocus || srcUri == null || this.hasAudioFocus) {
             return true;
         }
         int result = audioManager.requestAudioFocus(this,
@@ -582,8 +583,8 @@ class ReactExoplayerView extends FrameLayout implements
         }
 
         if (playWhenReady) {
-            boolean hasAudioFocus = requestAudioFocus();
-            if (hasAudioFocus) {
+            this.hasAudioFocus = requestAudioFocus();
+            if (this.hasAudioFocus) {
                 player.setPlayWhenReady(true);
             }
         } else {
@@ -678,6 +679,7 @@ class ReactExoplayerView extends FrameLayout implements
     public void onAudioFocusChange(int focusChange) {
         switch (focusChange) {
             case AudioManager.AUDIOFOCUS_LOSS:
+                this.hasAudioFocus = false;
                 eventEmitter.audioFocusChanged(false);
                 pausePlayback();
                 audioManager.abandonAudioFocus(this);
@@ -686,6 +688,7 @@ class ReactExoplayerView extends FrameLayout implements
                 eventEmitter.audioFocusChanged(false);
                 break;
             case AudioManager.AUDIOFOCUS_GAIN:
+                this.hasAudioFocus = true;
                 eventEmitter.audioFocusChanged(true);
                 break;
             default: