From 58242e6cafb53c4d3c747befdf710de4fba5b68d Mon Sep 17 00:00:00 2001
From: andrewlewis <andrewlewis@google.com>
Date: Wed, 14 Dec 2022 09:06:46 +0000
Subject: [PATCH] Output direct buffers from `SilentAudioGenerator`

`AudioProcessor`s expect direct buffers. This shouldn't make any functional difference in our code, but a custom audio processor might try to access the buffer from JNI in which case a direct byte buffer is more efficient.

PiperOrigin-RevId: 495241669
---
 .../android/exoplayer2/transformer/SilentAudioGenerator.java   | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/SilentAudioGenerator.java b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/SilentAudioGenerator.java
index 51bdbbdf11..313e609ac1 100644
--- a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/SilentAudioGenerator.java
+++ b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/SilentAudioGenerator.java
@@ -37,7 +37,8 @@ import java.nio.ByteOrder;
     long outputFrameCount = (format.sampleRate * totalDurationUs) / C.MICROS_PER_SECOND;
     remainingBytesToOutput = frameSize * outputFrameCount;
     internalBuffer =
-        ByteBuffer.allocate(DEFAULT_BUFFER_SIZE_FRAMES * frameSize).order(ByteOrder.nativeOrder());
+        ByteBuffer.allocateDirect(DEFAULT_BUFFER_SIZE_FRAMES * frameSize)
+            .order(ByteOrder.nativeOrder());
     internalBuffer.flip();
   }