lzw.h

lzw压缩程序1.5

#include <stdio.h>
typedef struct tag_bit_file
{
	FILE *file;
	unsigned char mask;
	char rack;
	short pacifier_counter;
	char *buffer;
	int len,ylen;
	unsigned short ptr;
}BIT_FILE;

extern BIT_FILE *OpenInputBitFile(char *filename);
extern BIT_FILE *OpenOutputBitFile(char *filename);
extern void     OutputBit(BIT_FILE *bit_file,short bit);
extern void     OutputBits(BIT_FILE *bit_file,unsigned int code,short count);
extern short InputBit(BIT_FILE *bit_file);
extern unsigned int InputBits(BIT_FILE *bit_file,short count);
extern void     CloseInputBitFile(BIT_FILE *bit_file);
extern void     CloseOutputBitFile(BIT_FILE *bit_file);
extern void     FilePrintBinary(FILE *file,unsigned short code,short bits);
extern void fatal_error(char *fmt);

extern BIT_FILE *OpenInputMemFile(char *name,int len);
extern void CloseInputMenFile(BIT_FILE *bit_file);
extern short InputMenBit(BIT_FILE *bit_file);
extern unsigned int InputBits(BIT_FILE *bit_file,short bit_count);

BOOL CompressFile(char *input,char *output);
BOOL CompressMemFile(char *buff,int len,char *output);

void ExpandFile(char *input,char *output);