src/rle.c File Reference

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Detailed Description

Code for run-length-encoding compression.

THIS FILE IS USED IN PROGRAMS OTHER THAN CALCROGUE, AND SHOULD NOT INCLUDE CROGUE.H

Definition in file rle.c.

#include "crogue.h"
#include "substdio.h"
#include "config.h"
#include "rle.h"
#include "huffman.h"

Go to the source code of this file.

Defines
#define	CHECKSUM_INIT   0xF1897134L
#define	CHECKSUM_MUL   0xA8159803L
#define	CHECKSUM_ADD   0x81340967L
Functions
unsigned long	_checksum_file (FILE *f)
unsigned char	_rleread_file (void)
unsigned char	_rleread_ptr (void)
unsigned char	_rleread_huffman (void)
unsigned long	checksum_bytes (void *data, unsigned int length)
int	frleverify (FILE *f)
void	frlewrite (void *data, size_t s, size_t granularity, FILE *f)
void	frleread (void *data, size_t s, size_t granularity, FILE *f)
void	frleinit (void)
void	frleinit_read (FILE *f)
void	frleinit_write (FILE *f, void(*outfunc)(unsigned char c, FILE *f))
void	frleinit_write_nochecksum (void(*outfunc)(unsigned char c, FILE *f))
void	frlefinalize (FILE *f)
void	frleflush (FILE *fout)
void	frleputc (unsigned char c, FILE *fout)
unsigned char	rlegetc (void)
void	rle_set_source (rle_source_type t, const void *s)
Variables
unsigned short	_runlen = 0
unsigned char	_runchar = ' '
const void *	_rlepos
unsigned char(*	_rleread )(void)
void(*	_putc_compress )(unsigned char c, FILE *f)=(void(*)(unsigned char c, FILE *f))&fputc
const unsigned char	magic_byte = 0x5F

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Define Documentation

#define CHECKSUM_ADD   0x81340967L

Definition at line 41 of file rle.c. Referenced by checksum_bytes().

#define CHECKSUM_INIT   0xF1897134L

Definition at line 39 of file rle.c. Referenced by checksum_bytes().

#define CHECKSUM_MUL   0xA8159803L

Definition at line 40 of file rle.c. Referenced by checksum_bytes().

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Function Documentation

unsigned long _checksum_file (  FILE *  f  )  [static]

Definition at line 78 of file rle.c. References checksum_bytes(). Referenced by frlefinalize(), and frleverify().

unsigned char _rleread_file (  void   )  [static]

Definition at line 337 of file rle.c. References _rlepos. Referenced by rle_set_source().

unsigned char _rleread_huffman (  void   )  [static]

Definition at line 331 of file rle.c. References _rlepos, and fhuffmangetc(). Referenced by rle_set_source().

unsigned char _rleread_ptr (  void   )  [static]

Definition at line 343 of file rle.c. References _rlepos. Referenced by rle_set_source().

unsigned long checksum_bytes (  void *  data, unsigned int  length )

Definition at line 62 of file rle.c. References CHECKSUM_ADD, CHECKSUM_INIT, and CHECKSUM_MUL. Referenced by _checksum_file(), checksum_scores(), frleread(), and frlewrite().

void frlefinalize (  FILE *  f  )

Definition at line 215 of file rle.c. References _checksum_file(), and frleflush(). Referenced by save_game(), and save_level().

void frleflush (  FILE *  fout  )

Definition at line 227 of file rle.c. References _putc_compress, _runchar, _runlen, and magic_byte. Referenced by frlefinalize(), frleputc(), frlewrite(), save_game(), and save_level().

void frleinit (  void   )

Definition at line 183 of file rle.c. References _runchar, and _runlen. Referenced by frleinit_read(), frleinit_write(), and frleinit_write_nochecksum().

void frleinit_read (  FILE *  f  )

Definition at line 190 of file rle.c. References frleinit(). Referenced by load_level(), and restore_game().

void frleinit_write (  FILE *  f, void(*  outfunc)(unsigned char c, FILE *f) )

Definition at line 197 of file rle.c. References _putc_compress, and frleinit(). Referenced by save_game(), and save_level().

void frleinit_write_nochecksum (  void(*  outfunc)(unsigned char c, FILE *f)  )

Definition at line 208 of file rle.c. References _putc_compress, and frleinit().

void frleputc (  unsigned char  c, FILE *  fout )

Definition at line 265 of file rle.c. References _runchar, _runlen, and frleflush(). Referenced by frlewrite().

void frleread (  void *  data, size_t  s, size_t  granularity, FILE *  f )

Definition at line 135 of file rle.c. References _rleread, checksum_bytes(), message(), rle_huffman, rle_set_source(), and rlegetc(). Referenced by load_level(), and restore_game().

int frleverify (  FILE *  f  )

Definition at line 90 of file rle.c. References _checksum_file(). Referenced by load_level(), and restore_game().

void frlewrite (  void *  data, size_t  s, size_t  granularity, FILE *  f )

Definition at line 101 of file rle.c. References _putc_compress, checksum_bytes(), frleflush(), and frleputc(). Referenced by save_game(), and save_level().

void rle_set_source (  rle_source_type  t, const void *  s )

Definition at line 312 of file rle.c. References _rlepos, _rleread, _rleread_file(), _rleread_huffman(), _rleread_ptr(), rle_file, rle_huffman, and rle_pointer. Referenced by base_coat(), and frleread().

unsigned char rlegetc (  void   )

Definition at line 288 of file rle.c. References _rleread, _runchar, _runlen, and magic_byte. Referenced by base_coat(), and frleread().

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Variable Documentation

void(* _putc_compress)(unsigned char c, FILE *f) = (void(*)(unsigned char c, FILE *f))&fputc [static]

Definition at line 56 of file rle.c. Referenced by frleflush(), frleinit_write(), frleinit_write_nochecksum(), and frlewrite().

const void* _rlepos [static]

Definition at line 51 of file rle.c. Referenced by _rleread_file(), _rleread_huffman(), _rleread_ptr(), and rle_set_source().

unsigned char(* _rleread)(void) [static]

Definition at line 52 of file rle.c. Referenced by frleread(), rle_set_source(), and rlegetc().

unsigned char _runchar = ' ' [static]

Definition at line 43 of file rle.c. Referenced by frleflush(), frleinit(), frleputc(), and rlegetc().

unsigned short _runlen = 0 [static]

Definition at line 42 of file rle.c. Referenced by frleflush(), frleinit(), frleputc(), and rlegetc().

const unsigned char magic_byte = 0x5F [static]

Definition at line 59 of file rle.c. Referenced by frleflush(), and rlegetc().

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