godot/thirdparty/zlib/deflate.h

/* deflate.h -- internal compression state
 * Copyright (C) 1995-2024 Jean-loup Gailly
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* WARNING: this file should *not* be used by applications. It is
   part of the implementation of the compression library and is
   subject to change. Applications should only use zlib.h.
 */

/* @(#) $Id$ */

#ifndef DEFLATE_H
#define DEFLATE_H

#include "zutil.h"

/* define NO_GZIP when compiling if you want to disable gzip header and
   trailer creation by deflate().  NO_GZIP would be used to avoid linking in
   the crc code when it is not needed.  For shared libraries, gzip encoding
   should be left enabled. */
#ifndef NO_GZIP
#define GZIP
#endif

/* define LIT_MEM to slightly increase the speed of deflate (order 1% to 2%) at
   the cost of a larger memory footprint */
/* #define LIT_MEM */

/* ===========================================================================
 * Internal compression state.
 */

#define LENGTH_CODES …
/* number of length codes, not counting the special END_BLOCK code */

#define LITERALS …
/* number of literal bytes 0..255 */

#define L_CODES …
/* number of Literal or Length codes, including the END_BLOCK code */

#define D_CODES …
/* number of distance codes */

#define BL_CODES …
/* number of codes used to transfer the bit lengths */

#define HEAP_SIZE …
/* maximum heap size */

#define MAX_BITS …
/* All codes must not exceed MAX_BITS bits */

#define Buf_size …
/* size of bit buffer in bi_buf */

#define INIT_STATE …
#ifdef GZIP
#define GZIP_STATE …
#endif
#define EXTRA_STATE …
#define NAME_STATE …
#define COMMENT_STATE …
#define HCRC_STATE …
#define BUSY_STATE …
#define FINISH_STATE …
/* Stream status */


/* Data structure describing a single value and its code string. */
ct_data;

#define Freq …
#define Code …
#define Dad …
#define Len …

static_tree_desc;

tree_desc;

Pos;
Posf;
IPos;

/* A Pos is an index in the character window. We use short instead of int to
 * save space in the various tables. IPos is used only for parameter passing.
 */

deflate_state;

/* Output a byte on the stream.
 * IN assertion: there is enough room in pending_buf.
 */
#define put_byte(s, c) …


#define MIN_LOOKAHEAD …
/* Minimum amount of lookahead, except at the end of the input file.
 * See deflate.c for comments about the MIN_MATCH+1.
 */

#define MAX_DIST(s) …
/* In order to simplify the code, particularly on 16 bit machines, match
 * distances are limited to MAX_DIST instead of WSIZE.
 */

#define WIN_INIT …
/* Number of bytes after end of data in window to initialize in order to avoid
   memory checker errors from longest match routines */

        /* in trees.c */
void ZLIB_INTERNAL _tr_init(deflate_state *s);
int ZLIB_INTERNAL _tr_tally(deflate_state *s, unsigned dist, unsigned lc);
void ZLIB_INTERNAL _tr_flush_block(deflate_state *s, charf *buf,
                                   ulg stored_len, int last);
void ZLIB_INTERNAL _tr_flush_bits(deflate_state *s);
void ZLIB_INTERNAL _tr_align(deflate_state *s);
void ZLIB_INTERNAL _tr_stored_block(deflate_state *s, charf *buf,
                                    ulg stored_len, int last);

#define d_code(dist) …
/* Mapping from a distance to a distance code. dist is the distance - 1 and
 * must not have side effects. _dist_code[256] and _dist_code[257] are never
 * used.
 */

#ifndef ZLIB_DEBUG
/* Inline versions of _tr_tally for speed: */

#if defined(GEN_TREES_H) || !defined(STDC)
  extern uch ZLIB_INTERNAL _length_code[];
  extern uch ZLIB_INTERNAL _dist_code[];
#else
  extern const uch ZLIB_INTERNAL _length_code[];
  extern const uch ZLIB_INTERNAL _dist_code[];
#endif

#ifdef LIT_MEM
#define _tr_tally_lit …
#define _tr_tally_dist …
#else
#define _tr_tally_lit(s, c, flush) …
#define _tr_tally_dist(s, distance, length, flush) …
#endif
#else
#define _tr_tally_lit …
#define _tr_tally_dist …
#endif

#endif /* DEFLATE_H */