bool (*surface_create)(struct ivi_surface *surf, void *user_data);
bool (*surface_commited)(struct ivi_surface *surf, void *user_data);
bool (*surface_activate)(struct ivi_surface *surf, void *user_data);
bool (*surface_create)(struct ivi_surface *surf, void *user_data);
bool (*surface_commited)(struct ivi_surface *surf, void *user_data);
bool (*surface_activate)(struct ivi_surface *surf, void *user_data);