forked from Mirrors/wine-wine
163 lines
6.0 KiB
C
163 lines
6.0 KiB
C
/* zlib.h -- interface of the 'zlib' general purpose compression library
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* version 1.2.11, January 15th, 2017
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*
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* Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*
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* Jean-loup Gailly Mark Adler
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* jloup@gzip.org madler@alumni.caltech.edu
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*/
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#ifndef ZLIB_H
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#define ZLIB_H
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#include "windef.h"
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#undef FAR
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#define FAR
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#define z_const const
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typedef unsigned char Byte; /* 8 bits */
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typedef unsigned int uInt; /* 16 bits or more */
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typedef unsigned long uLong; /* 32 bits or more */
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typedef Byte FAR Bytef;
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typedef void FAR *voidpf;
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typedef char FAR charf;
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typedef int FAR intf;
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typedef unsigned char uch;
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typedef uch FAR uchf;
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typedef unsigned short ush;
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typedef ush FAR ushf;
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typedef unsigned long ulg;
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typedef voidpf (*alloc_func)(voidpf opaque, uInt items, uInt size);
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typedef void (*free_func)(voidpf opaque, voidpf address);
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struct internal_state;
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typedef struct z_stream_s {
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z_const Bytef *next_in; /* next input byte */
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uInt avail_in; /* number of bytes available at next_in */
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uLong total_in; /* total number of input bytes read so far */
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Bytef *next_out; /* next output byte will go here */
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uInt avail_out; /* remaining free space at next_out */
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uLong total_out; /* total number of bytes output so far */
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z_const char *msg; /* last error message, NULL if no error */
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struct internal_state FAR *state; /* not visible by applications */
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alloc_func zalloc; /* used to allocate the internal state */
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free_func zfree; /* used to free the internal state */
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voidpf opaque; /* private data object passed to zalloc and zfree */
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int data_type; /* best guess about the data type: binary or text
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for deflate, or the decoding state for inflate */
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uLong adler; /* Adler-32 or CRC-32 value of the uncompressed data */
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uLong reserved; /* reserved for future use */
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} z_stream;
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typedef z_stream FAR *z_streamp;
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/*
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gzip header information passed to and from zlib routines. See RFC 1952
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for more details on the meanings of these fields.
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*/
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typedef struct gz_header_s {
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int text; /* true if compressed data believed to be text */
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uLong time; /* modification time */
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int xflags; /* extra flags (not used when writing a gzip file) */
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int os; /* operating system */
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Bytef *extra; /* pointer to extra field or Z_NULL if none */
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uInt extra_len; /* extra field length (valid if extra != Z_NULL) */
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uInt extra_max; /* space at extra (only when reading header) */
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Bytef *name; /* pointer to zero-terminated file name or Z_NULL */
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uInt name_max; /* space at name (only when reading header) */
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Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */
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uInt comm_max; /* space at comment (only when reading header) */
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int hcrc; /* true if there was or will be a header crc */
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int done; /* true when done reading gzip header (not used
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when writing a gzip file) */
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} gz_header;
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typedef gz_header FAR *gz_headerp;
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#define Z_NO_FLUSH 0
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#define Z_PARTIAL_FLUSH 1
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#define Z_SYNC_FLUSH 2
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#define Z_FULL_FLUSH 3
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#define Z_FINISH 4
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#define Z_BLOCK 5
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#define Z_TREES 6
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/* Allowed flush values; see deflate() and inflate() below for details */
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#define Z_OK 0
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#define Z_STREAM_END 1
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#define Z_NEED_DICT 2
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#define Z_ERRNO (-1)
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#define Z_STREAM_ERROR (-2)
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#define Z_DATA_ERROR (-3)
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#define Z_MEM_ERROR (-4)
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#define Z_BUF_ERROR (-5)
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#define Z_VERSION_ERROR (-6)
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/* Return codes for the compression/decompression functions. Negative values
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* are errors, positive values are used for special but normal events.
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*/
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#define Z_NO_COMPRESSION 0
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#define Z_BEST_SPEED 1
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#define Z_BEST_COMPRESSION 9
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#define Z_DEFAULT_COMPRESSION (-1)
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/* compression levels */
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#define Z_FILTERED 1
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#define Z_HUFFMAN_ONLY 2
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#define Z_RLE 3
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#define Z_FIXED 4
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#define Z_DEFAULT_STRATEGY 0
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/* compression strategy; see deflateInit2() below for details */
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#define Z_BINARY 0
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#define Z_TEXT 1
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#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */
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#define Z_UNKNOWN 2
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/* Possible values of the data_type field for deflate() */
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#define Z_DEFLATED 8
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/* The deflate compression method (the only one supported in this version) */
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#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */
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#define MAX_WBITS 15 /* 32K LZ77 window */
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#define MAX_MEM_LEVEL 9
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extern int inflateInit(z_streamp strm) DECLSPEC_HIDDEN;
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extern int inflateInit2(z_streamp strm, int windowBits) DECLSPEC_HIDDEN;
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extern int inflate(z_streamp strm, int flush) DECLSPEC_HIDDEN;
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extern int inflateEnd(z_streamp strm) DECLSPEC_HIDDEN;
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extern int deflateInit(z_streamp strm, int level) DECLSPEC_HIDDEN;
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extern int deflateInit2(z_streamp strm, int level, int method, int windowBits, int memLevel, int strategy) DECLSPEC_HIDDEN;
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extern int deflate(z_streamp strm, int flush) DECLSPEC_HIDDEN;
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extern int deflateEnd(z_streamp strm) DECLSPEC_HIDDEN;
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#endif /* ZLIB_H */
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