protected String getCurrentPlayer() {
        String player;
        Object playerFactory = Utils.getCurrentPlayerFactoryInVideoView(mControlWrapper);
        if (playerFactory instanceof ExoMediaPlayerFactory) {
            player = "ExoPlayer";
        } else if (playerFactory instanceof IjkPlayerFactory) {
            player = "IjkPlayer";
        } else if (playerFactory instanceof AndroidMediaPlayerFactory) {
            player = "MediaPlayer";
        } else {
            player = "unknown";
        }
        return String.format("player: %s ", player);
    }
Returns the debugging information string to be shown by the target {@link TextView}.
dkplayer-sample/src/main/java/xyz/doikki/dkplayer/widget/component/DebugInfoView.java