void(* filter_scale)(uint8_t *out_pixel, const int32_t *work_pixel, int linesize)
void(* filter_simple_high)(int32_t *work_line, uint8_t *in_lines_cur[3], uint8_t *in_lines_adj[3], const int16_t *coef, int linesize)
void(* filter_complex_high)(int32_t *work_line, uint8_t *in_lines_cur[5], uint8_t *in_lines_adj[5], const int16_t *coef, int linesize)
void(* filter_complex_low)(int32_t *work_line, uint8_t *in_lines_cur[4], const int16_t *coef, int linesize)
void(* filter_simple_low)(int32_t *work_line, uint8_t *in_lines_cur[2], const int16_t *coef, int linesize)