The editor structures include encoding and decoding.Its function include FDCT, IDCT, quantification and anti-quantification, DC encoding and AC coefficient ordering, entropy encoding and decoding.

• 编辑器结构分为编码过程和解码过程，其功能包括FDCT（正向离散余弦变换）和IDCT（DCT逆变换）、量化和反量化、DC编解码和AC系数排序、熵编码和熵解码。