Add getMetrics() in MediaCodecAdapter

Before the introduction of the MediaCodecAdapter, users could get
access directly to the MediaCodec instance from
MediaCodecRenderer.getCodec() and then retrieve the codec metrics.

This change exposes MediaCodec.getMetrics() on the MediaCodecAdapter.

Issue: google/ExoPlayer#9766

#minor-release

PiperOrigin-RevId: 416343023

RELEASENOTES.md

@@ -18,6 +18,9 @@
         around an issue that occurs on some devices when switching a surface
         from a secure codec to another codec
         (#8696)[https://github.com/google/ExoPlayer/issues/8696].
+    *   Add `MediaCodecAdapter.getMetrics()` to allow users obtain metrics data
+        from `MediaCodec`.
+        ([#9766](https://github.com/google/ExoPlayer/issues/9766)).
 *   Android 12 compatibility:
     *   Upgrade the Cast extension to depend on
         `com.google.android.gms:play-services-cast-framework:20.1.0`. Earlier

library/core/src/main/java/com/google/android/exoplayer2/mediacodec/AsynchronousMediaCodecAdapter.java

@@ -22,6 +22,7 @@ import android.media.MediaFormat;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.HandlerThread;
+import android.os.PersistableBundle;
 import android.view.Surface;
 import androidx.annotation.IntDef;
 import androidx.annotation.Nullable;
@@ -306,6 +307,13 @@ import java.nio.ByteBuffer;
     codec.signalEndOfInputStream();
   }
 
+  @Override
+  @RequiresApi(26)
+  public PersistableBundle getMetrics() {
+    maybeBlockOnQueueing();
+    return codec.getMetrics();
+  }
+
   @VisibleForTesting
   /* package */ void onError(MediaCodec.CodecException error) {
     asynchronousMediaCodecCallback.onError(codec, error);

library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecAdapter.java

@@ -20,6 +20,7 @@ import android.media.MediaCrypto;
 import android.media.MediaFormat;
 import android.os.Bundle;
 import android.os.Handler;
+import android.os.PersistableBundle;
 import android.view.Surface;
 import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
@@ -336,4 +337,12 @@ public interface MediaCodecAdapter {
    */
   @RequiresApi(18)
   void signalEndOfInputStream();
+
+  /**
+   * Returns metrics data about the current codec instance.
+   *
+   * @see MediaCodec#getMetrics()
+   */
+  @RequiresApi(26)
+  PersistableBundle getMetrics();
 }

library/core/src/main/java/com/google/android/exoplayer2/mediacodec/SynchronousMediaCodecAdapter.java

@@ -23,6 +23,7 @@ import android.media.MediaCodec;
 import android.media.MediaFormat;
 import android.os.Bundle;
 import android.os.Handler;
+import android.os.PersistableBundle;
 import android.view.Surface;
 import androidx.annotation.DoNotInline;
 import androidx.annotation.Nullable;
@@ -231,8 +232,16 @@ public final class SynchronousMediaCodecAdapter implements MediaCodecAdapter {
     codec.setVideoScalingMode(scalingMode);
   }
 
+  @Override
+  @RequiresApi(26)
+  public PersistableBundle getMetrics() {
+    return codec.getMetrics();
+  }
+
   @RequiresApi(18)
   private static final class Api18 {
+    private Api18() {}
+
     @DoNotInline
     public static Surface createCodecInputSurface(MediaCodec codec) {
       return codec.createInputSurface();

testutils/src/main/java/com/google/android/exoplayer2/testutil/CapturingRenderersFactory.java

@@ -23,6 +23,7 @@ import android.media.MediaCodec;
 import android.media.MediaFormat;
 import android.os.Bundle;
 import android.os.Handler;
+import android.os.PersistableBundle;
 import android.util.SparseArray;
 import android.view.Surface;
 import androidx.annotation.Nullable;
@@ -275,6 +276,12 @@ public class CapturingRenderersFactory implements RenderersFactory, Dumper.Dumpa
       delegate.signalEndOfInputStream();
     }
 
+    @RequiresApi(26)
+    @Override
+    public PersistableBundle getMetrics() {
+      return delegate.getMetrics();
+    }
+
     // Dumpable implementation
 
     @Override