jum.c

常好且全面的jpeg图像压缩算法

/*jum.c is a file has some math programe*/
#include "commondecls.h"
const int jpeg_natural_order[DCTSIZE2+16] = {
  0,  1,  8, 16,  9,  2,  3, 10,
  17, 24, 32, 25, 18, 11,  4,  5,
  12, 19, 26, 33, 40, 48, 41, 34,
  27, 20, 13,  6,  7, 14, 21, 28,
  35, 42, 49, 56, 57, 50, 43, 36,
  29, 22, 15, 23, 30, 37, 44, 51,
  58, 59, 52, 45, 38, 31, 39, 46,
  53, 60, 61, 54, 47, 55, 62, 63,
  63, 63, 63, 63, 63, 63, 63, 63, /* extra entries for safety in decoder */
  63, 63, 63, 63, 63, 63, 63, 63
 };