Create frame processor in MCVR

PiperOrigin-RevId: 495368262

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

@@ -1097,6 +1097,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
     if (codecOperatingRate <= assumedMinimumCodecOperatingRate) {
       codecOperatingRate = CODEC_OPERATING_RATE_UNSET;
     }
+    onReadyToInitializeCodec(inputFormat);
     codecInitializingTimestamp = SystemClock.elapsedRealtime();
     MediaCodecAdapter.Configuration configuration =
         getMediaCodecConfiguration(codecInfo, inputFormat, crypto, codecOperatingRate);
@@ -1382,6 +1383,22 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
   }
 
   /**
+   * Called when ready to initialize the {@link MediaCodecAdapter}.
+   *
+   * <p>This method is called just before the renderer obtains the {@linkplain
+   * #getMediaCodecConfiguration configuration} for the {@link MediaCodecAdapter} and creates the
+   * adapter via the passed in {@link MediaCodecAdapter.Factory}.
+   *
+   * <p>The default implementation is a no-op.
+   *
+   * @param format The {@link Format} for which the codec is being configured.
+   * @throws ExoPlaybackException If an error occurs preparing for initializing the codec.
+   */
+  protected void onReadyToInitializeCodec(Format format) throws ExoPlaybackException {
+    // Do nothing.
+  }
+
+  /**
    * Called when a {@link MediaCodec} has been created and configured.
    *
    * <p>The default implementation is a no-op.