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/**
* @file lzw.h
* @brief LZW header file
* @internal
*/
/*
* Written by Mike Frysinger <vapier@gmail.com>
* Released into the public domain
*/
#ifndef _LZW_H
#define _LZW_H
#ifdef __cplusplus
extern "C" {
#endif
#define LZW_MAGIC_1 0x1F
#define LZW_MAGIC_2 0x9D
#define LZW_MAGIC "\037\235"
#ifdef __IN_LIBLZW
# define HBITS 17 /* 50% occupancy */
# define HSIZE (1<<HBITS)
# define HMASK (HSIZE-1)
# define HPRIME 9941
typedef struct {
int fd;
int eof;
unsigned char *inbuf, *outbuf, *stackp;
unsigned char *unreadbuf;
size_t stackp_diff;
size_t insize, outpos;
ssize_t rsize;
unsigned char flags;
int maxbits, block_mode;
unsigned long int htab[HSIZE];
unsigned short codetab[HSIZE];
int n_bits, posbits, inbits, bitmask, finchar;
long int maxcode, oldcode, incode, code, free_ent;
} lzwFile;
#else
typedef void lzwFile;
#endif
extern lzwFile *lzw_open(const char*, int);
extern lzwFile* lzw_fdopen(int);
extern int lzw_close(lzwFile*);
extern ssize_t lzw_read(lzwFile*, void*, size_t);
#ifdef __cplusplus
}
#endif
#endif /* _LZW_H */
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