From a8d1f04f92e15b2832ba810bc4fb993312f23073 Mon Sep 17 00:00:00 2001
From: andrewlewis <andrewlewis@google.com>
Date: Mon, 5 Nov 2018 10:54:24 -0800
Subject: [PATCH] Document error case for generateAudioSessionIdV21

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=220132865
---
 .../core/src/main/java/com/google/android/exoplayer2/C.java  | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/library/core/src/main/java/com/google/android/exoplayer2/C.java b/library/core/src/main/java/com/google/android/exoplayer2/C.java
index 6c72dd8d0a..fac9818d9e 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/C.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/C.java
@@ -978,7 +978,10 @@ public final class C {
   }
 
   /**
-   * Returns a newly generated {@link android.media.AudioTrack} session identifier.
+   * Returns a newly generated audio session identifier, or {@link AudioManager#ERROR} if an error
+   * occurred in which case audio playback may fail.
+   *
+   * @see AudioManager#generateAudioSessionId()
    */
   @TargetApi(21)
   public static int generateAudioSessionIdV21(Context context) {