private static extern void set_anim_callbacks(
fnType_Vs play_fn,
fnType_I is_playing_fn,
fnType_S get_playing_fn,
fnType_S list_fn,
fnType_V enable_ambient_fn,
fnType_V disable_ambient_fn
);
private static extern void set_marytts_callbacks(
fnType_Vs speak_fn,
fnType_I is_speaking_fn
);
