How localplayback errors are notified from C++ to java mediaplayer/ mediarecorder layer/Application in android ?

How localplayback errors are notified from C++ to java mediaplayer/ mediarecorder layer/Application in android ?

Java layer will have

MediaPlayer
{
  public static void postEventFromNative() { Notifies Error or Information events to Application thru InfoListener or ErrorListener }

};

JNI:
=====

JNIMediaPlayerListener/ JNIMediaRecorderListener is passed to underlying c++ mediaplayer or mediarecorder [libmedia] object.

whenver C++ mediaplayer or media recorder encounters errors it will call JNIMediaPlayerListener's notify () fn.

JNIMediaPlayerListener's notify/JNIMediaRecorderListener's notify is implemented in JNI.

void JNIMediaPlayerListener/JNIMediaRecorderListener::notify(int msg, int ext1, int ext2, const Parcel *obj)

{
   
    fields.post_event = env->GetStaticMethodID(clazz, "postEventFromNative",
                                               "(Ljava/lang/Object;IIILjava/lang/Object;)V");
  env->CallStaticVoidMethod(mClass, fields.post_event, mObject,
                msg, ext1, ext2, NULL); //This will call the postEventFromNative() fn in Java...
 
}