struct libretro_raw {
    void(*set_environment)(retro_environment_t);
    void(*set_video_refresh)(retro_video_refresh_t);
    void(*set_audio_sample)(retro_audio_sample_t);
    void(*set_audio_sample_batch)(retro_audio_sample_batch_t);
    void(*set_input_poll)(retro_input_poll_t);
    void(*set_input_state)(retro_input_state_t);
    void(*init)(void);
    void(*deinit)(void);
    unsigned(*api_version)(void);
    void(*get_system_info)(struct retro_system_info * info);
    void(*get_system_av_info)(struct retro_system_av_info * info);
    void(*set_controller_port_device)(unsigned port, unsigned device);
    void(*reset)(void);
    void(*run)(void);
    size_t(*serialize_size)(void);
    bool(*serialize)(void* data, size_t size);
    bool(*unserialize)(const void* data, size_t size);
    void(*cheat_reset)(void);
    void(*cheat_set)(unsigned index, bool enabled, const char * code);
    bool(*load_game)(const struct retro_game_info * game);
    bool(*load_game_special)(unsigned game_type, const struct retro_game_info * info, size_t num_info);
    void(*unload_game)(void);
    unsigned(*get_region)(void);
    void* (*get_memory_data)(unsigned id);
    size_t(*get_memory_size)(unsigned id);
};