huffman.h

一个可用于多平台的旋转180度 jpg的源代码。大家可以进一步的改进。

#ifndef	HUFFMAN_H
#define	HUFFMAN_H

#include "Header.h"

extern BYTE g_lumDCHuffBitDef[17];
extern BYTE g_lumDCHuffValDef[12];
extern BYTE g_lumACHuffBitDef[17];
extern BYTE g_lumACHuffValDef[162];

extern BYTE g_chrDCHuffBitDef[17];
extern BYTE g_chrDCHuffValDef[12];
extern BYTE g_chrACHuffBitDef[17];
extern BYTE g_chrACHuffValDef[162];

extern DWORD g_lumDCHuffCode[256], g_lumACHuffCode[256];
extern BYTE g_lumDCHuffSize[256], g_lumACHuffSize[256];

extern DWORD g_chrDCHuffCode[256], g_chrACHuffCode[256];
extern BYTE g_chrDCHuffSize[256], g_chrACHuffSize[256];

void InitVLILookupTable();

void VLIntegerEncode(int *code, int *group, int val);

void MakeHuffTable(unsigned int code[], unsigned char size[], BYTE bit[], BYTE val[]);

int InitEntropyCodec(BYTE *lumDCHuffBitPtr, BYTE *lumDCHuffValPtr,BYTE *lumACHuffBitPtr, BYTE *lumACHuffValPtr,BYTE *chrDCHuffBitPtr, BYTE *chrDCHuffValPtr,BYTE *chrACHuffBitPtr, BYTE *chrACHuffValPtr );




#endif