Add method to disable passthrough.

PiperOrigin-RevId: 432461547

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/Codec.java

@@ -104,6 +104,11 @@ public interface Codec {
      */
     Codec createForVideoEncoding(Format format, List<String> allowedMimeTypes)
         throws TransformationException;
+
+    /** Returns whether the video needs to be encoded because of encoder specific configuration. */
+    default boolean videoNeedsEncoding() {
+      return false;
+    }
   }
 
   /**

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/TransformerVideoRenderer.java

@@ -99,6 +99,9 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
   }
 
   private boolean shouldPassthrough(Format inputFormat) {
+    if (encoderFactory.videoNeedsEncoding()) {
+      return false;
+    }
     if (transformationRequest.enableHdrEditing) {
       return false;
     }