Rollback of https://github.com/google/ExoPlayer/commit/70273a0361cd3091858c0c9122c58ce9cb8ec62a

*** Original commit ***

Assert incoming buffers are little endian in the DefaultAudioSink.

***

PiperOrigin-RevId: 310377513

library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java

@@ -629,7 +629,6 @@ public final class DefaultAudioSink implements AudioSink {
 
     if (inputBuffer == null) {
       // We are seeing this buffer for the first time.
-      Assertions.checkArgument(buffer.order() == ByteOrder.LITTLE_ENDIAN);
       if (!buffer.hasRemaining()) {
         // The buffer is empty.
         return true;

library/core/src/main/java/com/google/android/exoplayer2/audio/SilenceSkippingAudioProcessor.java

@@ -17,11 +17,13 @@ package com.google.android.exoplayer2.audio;
 
 import androidx.annotation.IntDef;
 import com.google.android.exoplayer2.C;
+import com.google.android.exoplayer2.util.Assertions;
 import com.google.android.exoplayer2.util.Util;
 import java.lang.annotation.Documented;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
 
 /**
  * An {@link AudioProcessor} that skips silence in the input stream. Input and output are 16-bit
@@ -315,6 +317,7 @@ public final class SilenceSkippingAudioProcessor extends BaseAudioProcessor {
    * classified as a noisy frame, or the limit of the buffer if no such frame exists.
    */
   private int findNoisePosition(ByteBuffer buffer) {
+    Assertions.checkArgument(buffer.order() == ByteOrder.LITTLE_ENDIAN);
     // The input is in ByteOrder.nativeOrder(), which is little endian on Android.
     for (int i = buffer.position(); i < buffer.limit(); i += 2) {
       if (Math.abs(buffer.getShort(i)) > SILENCE_THRESHOLD_LEVEL) {
@@ -330,6 +333,7 @@ public final class SilenceSkippingAudioProcessor extends BaseAudioProcessor {
    * from the byte position to the limit are classified as silent.
    */
   private int findNoiseLimit(ByteBuffer buffer) {
+    Assertions.checkArgument(buffer.order() == ByteOrder.LITTLE_ENDIAN);
     // The input is in ByteOrder.nativeOrder(), which is little endian on Android.
     for (int i = buffer.limit() - 2; i >= buffer.position(); i -= 2) {
       if (Math.abs(buffer.getShort(i)) > SILENCE_THRESHOLD_LEVEL) {