JPEG图像压缩VC代码实现

采用VC代码实现JPEG图像压缩，DCT变换，霍夫曼编码

#include 
#include 
#include 
#include “jpg_encode_types.h“
#include “jpg_encode_globals.h“
#include 

TJPEG_ENC_GLOBAL JEPG_ENC;
TJPEG_ENC_GLOBAL *TJE;
/*
BYTE DQTinfoYtable[64]={1111111111111112
		     1111122212333333
		     3334543343334544
		     5555534666565555};

BYTE DQTinfoCbtable[64]={1111112112533355
		      5555555555555555
		      5555555555555555
		      5555555555555555};

float fdtblY[64]={0.1250.090120.09567090.1063040.1250000.07954740.07699000.151021
0.09012000.06497290.06897480.07664070.09012000.03823370.05550670.108880
0.09567090.06897480.07322330.08136140.04783540.04058860.05892560.115587
0.1063040.07664070.08136140.09040390.03543460.03382480.04910590.128433
0.1250000.09012000.04783540.03543460.04166670.03181900.04619400.113266
0.1590950.05735050.04058860.04509970.03977370.04049790.04899480.115328
0.1154850.05550670.04419420.04910590.04619400.04899480.07112940.167431
0.1132660.06532820.06935200.07705980.07551060.1153280.1674310.328427};
float fdtblCb[64]={0.1250000.09012000.09567090.05315190.02500000.03181900.04619400.0906127
0.09012000.06497290.06897480.02554690.01802400.02294020.03330400.0653282
0.09567090.06897480.02440780.01627230.01913420.02435320.03535530.0693520
0.05315190.02554690.01627230.01808080.02126080.02705980.03928470.0770598
0.02500000.01802400.01913420.02126080.02500000.03181900.04619400.0906127
0.03181900.02294020.02435320.02705980.03181900.04049790.05879380.115328
0.04619400.03330400.03535530.03928470.04619400.05879380.08535530.167431
0.09061270.06532820.06935200.07705980.09061270.1153280.1674310.328427};
*/
void writebyte（BYTE bTJPEG_ENC_GLOBAL *TJE） 
{
	*TJE->fp_jpeg_stream++ = b;
	TJE->jpeg_length += 1;
}
void writeword（WORD wTJPEG_ENC_GLOBAL *TJE） 
{
	writebyte（（BYTE）（w/256）TJE）;
	writebyte（（BYTE）（w%256）TJE）;
}

void write_APP0info（TJPEG_ENC_GLOBAL *TJE）//Nothing to overwrite for APP0info
{
 writeword（TJE->APP0info.markerTJE）;
 writeword（TJE->APP0info.lengthTJE）;
 writebyte（‘J‘TJE）;
 writebyte（‘F‘TJE）;
 writebyte（‘I‘TJE）;
 writebyte（‘F‘TJE）;
 writebyte（0TJE）;
 writebyte（TJE->APP0info.versionhiTJE）;
 writebyte（TJE->APP0info.versionloTJE）;
 writebyte（TJE->APP0info.xyunitsTJE）;
 writeword（TJE->APP0info.xdensityTJE）;
 writeword（TJE->APP0info.ydensityTJE）;
 writebyte（TJE->APP0info.thumbnwidthTJE）;
 writebyte（TJE->APP0info.thumbnheightTJE）;
}

void write_SOF0info（TJPEG_ENC_GLOBAL *TJE）// We should overwrite width and height
{
 writeword（TJE->SOF0info.markerTJE）;
 writeword（TJE->SOF0info.lengthTJE）;
 writebyte（TJE->SOF0info.precisionTJE）;
 writeword（TJE->SOF0info.heightTJE）;
 writeword（TJE->SOF0info.widthTJE）;
 writebyte（TJE->SOF

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件     148480  2008-05-23 14:47  jpg_enc\Debug\jpg_enc.bsc

     文件     188488  2008-05-23 14:47  jpg_enc\Debug\jpg_enc.exe

     文件     255308  2008-05-23 14:47  jpg_enc\Debug\jpg_enc.ilk

     文件     209632  2008-05-23 14:47  jpg_enc\Debug\jpg_enc.pch

     文件     476160  2008-05-23 14:47  jpg_enc\Debug\jpg_enc.pdb

     文件      32213  2008-05-23 14:47  jpg_enc\Debug\jpg_encode.obj

     文件          0  2008-05-23 14:47  jpg_enc\Debug\jpg_encode.sbr

     文件       3270  2007-11-14 13:35  jpg_enc\Debug\jpg_encode_data.obj

     文件          0  2007-11-14 13:35  jpg_enc\Debug\jpg_encode_data.sbr

     文件      41984  2008-05-25 08:16  jpg_enc\Debug\vc60.idb

     文件      53248  2008-05-23 14:47  jpg_enc\Debug\vc60.pdb

     文件      33111  2008-03-16 21:42  jpg_enc\fp.jpg

     文件       4525  2006-02-20 13:27  jpg_enc\jpg_enc.dsp

     文件        537  2006-02-17 14:32  jpg_enc\jpg_enc.dsw

     文件     115712  2008-05-25 08:17  jpg_enc\jpg_enc.ncb

     文件     111616  2008-05-25 08:17  jpg_enc\jpg_enc.opt

     文件        248  2008-05-25 08:16  jpg_enc\jpg_enc.plg

     文件      31222  2007-06-11 20:18  jpg_enc\jpg_enc.rar

     文件      16384  2006-02-17 16:24  jpg_enc\SI\encoder.IAB

     文件        488  2006-02-17 16:24  jpg_enc\SI\encoder.IAD

     文件       4096  2006-02-17 16:24  jpg_enc\SI\encoder.IMB

     文件        368  2006-02-17 16:24  jpg_enc\SI\encoder.IMD

     文件         16  2006-02-21 13:20  jpg_enc\SI\encoder.PFI

     文件        776  2006-02-21 13:20  jpg_enc\SI\encoder.PO

     文件       1760  2006-02-17 16:24  jpg_enc\SI\encoder.PR

     文件       8608  2006-02-17 16:24  jpg_enc\SI\encoder.PRI

     文件      29064  2006-02-22 10:56  jpg_enc\SI\encoder.PS

     文件        396  2006-02-21 13:20  jpg_enc\SI\encoder.SearchResults

     文件      22127  2006-02-22 10:56  jpg_enc\SI\encoder.WK3

     文件      20675  2008-05-23 14:47  jpg_enc\src\jpg_encode.c

............此处省略11个文件信息