JPEG.H
上传用户:s6549606
上传日期:2015-11-11
资源大小:12002k
文件大小:1k
- #define M_SOF0 0xc0
- #define M_DHT 0xc4
- #define M_EOI 0xd9
- #define M_SOS 0xda
- #define M_DQT 0xdb
- #define M_DRI 0xdd
- #define M_APP0 0xe0
- static int Zig_Zag[8][8]={{0,1,5,6,14,15,27,28},
- {2,4,7,13,16,26,29,42},
- {3,8,12,17,25,30,41,43},
- {9,11,18,24,37,40,44,53},
- {10,19,23,32,39,45,52,54},
- {20,22,33,38,46,51,55,60},
- {21,34,37,47,50,56,59,61},
- {35,36,48,49,57,58,62,63}
- };
- #define W1 2841 /* 2048*sqrt(2)*cos(1*pi/16) */
- #define W2 2676 /* 2048*sqrt(2)*cos(2*pi/16) */
- #define W3 2408 /* 2048*sqrt(2)*cos(3*pi/16) */
- #define W5 1609 /* 2048*sqrt(2)*cos(5*pi/16) */
- #define W6 1108 /* 2048*sqrt(2)*cos(6*pi/16) */
- #define W7 565 /* 2048*sqrt(2)*cos(7*pi/16) */