- void process_begin (int64_t audio_channel_layout) {}
- void process_video (boost::shared_ptr<Image>, int, boost::shared_ptr<Subtitle>);
- void process_audio (boost::shared_ptr<const AudioBuffers>) {}
- void process_end () {}
+private:
+ void do_process_video (boost::shared_ptr<Image>, boost::shared_ptr<Subtitle>);
+ void do_process_audio (boost::shared_ptr<AudioBuffers>) {}