bit.h

jpeg and mpeg 编解码技术源代码

#ifndef _BIT_H_INCLUDED
#define _BIT_H_INCLUDED

#include <stdio.h>

#ifdef WAVELET_DLL
#define WAVELET_DLL_API __declspec(dllexport)
 
#define WAVELET_DLL_CC
#else
#define WAVELET_DLL_API
#define WAVELET_DLL_CC
#endif

#pragma pack(push, 1)

typedef struct
{
	FILE* file;
	unsigned char* buffer;
	int idx;
	int mask;
	int bufsize;
	int bufleft;
	int bits_left;
	char mode[2];
} t_bit_file;

#pragma pack(pop)

WAVELET_DLL_API t_bit_file* WAVELET_DLL_CC bit_open(char* name, 
													const char *mode, const int mem_size);
WAVELET_DLL_API int WAVELET_DLL_CC bit_close(t_bit_file* f, unsigned char** mem);
WAVELET_DLL_API int WAVELET_DLL_CC bit_read(const int num, t_bit_file* f);
WAVELET_DLL_API int WAVELET_DLL_CC bit_write(const int bits, const int num, t_bit_file* f);

#endif