cannam@89: /* zutil.h -- internal interface and configuration of the compression library
cannam@89:  * Copyright (C) 1995-2012 Jean-loup Gailly.
cannam@89:  * For conditions of distribution and use, see copyright notice in zlib.h
cannam@89:  */
cannam@89: 
cannam@89: /* WARNING: this file should *not* be used by applications. It is
cannam@89:    part of the implementation of the compression library and is
cannam@89:    subject to change. Applications should only use zlib.h.
cannam@89:  */
cannam@89: 
cannam@89: /* @(#) $Id$ */
cannam@89: 
cannam@89: #ifndef ZUTIL_H
cannam@89: #define ZUTIL_H
cannam@89: 
cannam@89: #ifdef HAVE_HIDDEN
cannam@89: #  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
cannam@89: #else
cannam@89: #  define ZLIB_INTERNAL
cannam@89: #endif
cannam@89: 
cannam@89: #include "zlib.h"
cannam@89: 
cannam@89: #if defined(STDC) && !defined(Z_SOLO)
cannam@89: #  if !(defined(_WIN32_WCE) && defined(_MSC_VER))
cannam@89: #    include <stddef.h>
cannam@89: #  endif
cannam@89: #  include <string.h>
cannam@89: #  include <stdlib.h>
cannam@89: #endif
cannam@89: 
cannam@89: #ifdef Z_SOLO
cannam@89:    typedef long ptrdiff_t;  /* guess -- will be caught if guess is wrong */
cannam@89: #endif
cannam@89: 
cannam@89: #ifndef local
cannam@89: #  define local static
cannam@89: #endif
cannam@89: /* compile with -Dlocal if your debugger can't find static symbols */
cannam@89: 
cannam@89: typedef unsigned char  uch;
cannam@89: typedef uch FAR uchf;
cannam@89: typedef unsigned short ush;
cannam@89: typedef ush FAR ushf;
cannam@89: typedef unsigned long  ulg;
cannam@89: 
cannam@89: extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
cannam@89: /* (size given to avoid silly warnings with Visual C++) */
cannam@89: 
cannam@89: #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
cannam@89: 
cannam@89: #define ERR_RETURN(strm,err) \
cannam@89:   return (strm->msg = (char*)ERR_MSG(err), (err))
cannam@89: /* To be used only when the state is known to be valid */
cannam@89: 
cannam@89:         /* common constants */
cannam@89: 
cannam@89: #ifndef DEF_WBITS
cannam@89: #  define DEF_WBITS MAX_WBITS
cannam@89: #endif
cannam@89: /* default windowBits for decompression. MAX_WBITS is for compression only */
cannam@89: 
cannam@89: #if MAX_MEM_LEVEL >= 8
cannam@89: #  define DEF_MEM_LEVEL 8
cannam@89: #else
cannam@89: #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
cannam@89: #endif
cannam@89: /* default memLevel */
cannam@89: 
cannam@89: #define STORED_BLOCK 0
cannam@89: #define STATIC_TREES 1
cannam@89: #define DYN_TREES    2
cannam@89: /* The three kinds of block type */
cannam@89: 
cannam@89: #define MIN_MATCH  3
cannam@89: #define MAX_MATCH  258
cannam@89: /* The minimum and maximum match lengths */
cannam@89: 
cannam@89: #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
cannam@89: 
cannam@89:         /* target dependencies */
cannam@89: 
cannam@89: #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
cannam@89: #  define OS_CODE  0x00
cannam@89: #  ifndef Z_SOLO
cannam@89: #    if defined(__TURBOC__) || defined(__BORLANDC__)
cannam@89: #      if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
cannam@89:          /* Allow compilation with ANSI keywords only enabled */
cannam@89:          void _Cdecl farfree( void *block );
cannam@89:          void *_Cdecl farmalloc( unsigned long nbytes );
cannam@89: #      else
cannam@89: #        include <alloc.h>
cannam@89: #      endif
cannam@89: #    else /* MSC or DJGPP */
cannam@89: #      include <malloc.h>
cannam@89: #    endif
cannam@89: #  endif
cannam@89: #endif
cannam@89: 
cannam@89: #ifdef AMIGA
cannam@89: #  define OS_CODE  0x01
cannam@89: #endif
cannam@89: 
cannam@89: #if defined(VAXC) || defined(VMS)
cannam@89: #  define OS_CODE  0x02
cannam@89: #  define F_OPEN(name, mode) \
cannam@89:      fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
cannam@89: #endif
cannam@89: 
cannam@89: #if defined(ATARI) || defined(atarist)
cannam@89: #  define OS_CODE  0x05
cannam@89: #endif
cannam@89: 
cannam@89: #ifdef OS2
cannam@89: #  define OS_CODE  0x06
cannam@89: #  if defined(M_I86) && !defined(Z_SOLO)
cannam@89: #    include <malloc.h>
cannam@89: #  endif
cannam@89: #endif
cannam@89: 
cannam@89: #if defined(MACOS) || defined(TARGET_OS_MAC)
cannam@89: #  define OS_CODE  0x07
cannam@89: #  ifndef Z_SOLO
cannam@89: #    if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
cannam@89: #      include <unix.h> /* for fdopen */
cannam@89: #    else
cannam@89: #      ifndef fdopen
cannam@89: #        define fdopen(fd,mode) NULL /* No fdopen() */
cannam@89: #      endif
cannam@89: #    endif
cannam@89: #  endif
cannam@89: #endif
cannam@89: 
cannam@89: #ifdef TOPS20
cannam@89: #  define OS_CODE  0x0a
cannam@89: #endif
cannam@89: 
cannam@89: #ifdef WIN32
cannam@89: #  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
cannam@89: #    define OS_CODE  0x0b
cannam@89: #  endif
cannam@89: #endif
cannam@89: 
cannam@89: #ifdef __50SERIES /* Prime/PRIMOS */
cannam@89: #  define OS_CODE  0x0f
cannam@89: #endif
cannam@89: 
cannam@89: #if defined(_BEOS_) || defined(RISCOS)
cannam@89: #  define fdopen(fd,mode) NULL /* No fdopen() */
cannam@89: #endif
cannam@89: 
cannam@89: #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
cannam@89: #  if defined(_WIN32_WCE)
cannam@89: #    define fdopen(fd,mode) NULL /* No fdopen() */
cannam@89: #    ifndef _PTRDIFF_T_DEFINED
cannam@89:        typedef int ptrdiff_t;
cannam@89: #      define _PTRDIFF_T_DEFINED
cannam@89: #    endif
cannam@89: #  else
cannam@89: #    define fdopen(fd,type)  _fdopen(fd,type)
cannam@89: #  endif
cannam@89: #endif
cannam@89: 
cannam@89: #if defined(__BORLANDC__) && !defined(MSDOS)
cannam@89:   #pragma warn -8004
cannam@89:   #pragma warn -8008
cannam@89:   #pragma warn -8066
cannam@89: #endif
cannam@89: 
cannam@89: /* provide prototypes for these when building zlib without LFS */
cannam@89: #if !defined(_WIN32) && (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
cannam@89:     ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
cannam@89:     ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
cannam@89: #endif
cannam@89: 
cannam@89:         /* common defaults */
cannam@89: 
cannam@89: #ifndef OS_CODE
cannam@89: #  define OS_CODE  0x03  /* assume Unix */
cannam@89: #endif
cannam@89: 
cannam@89: #ifndef F_OPEN
cannam@89: #  define F_OPEN(name, mode) fopen((name), (mode))
cannam@89: #endif
cannam@89: 
cannam@89:          /* functions */
cannam@89: 
cannam@89: #if defined(pyr) || defined(Z_SOLO)
cannam@89: #  define NO_MEMCPY
cannam@89: #endif
cannam@89: #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
cannam@89:  /* Use our own functions for small and medium model with MSC <= 5.0.
cannam@89:   * You may have to use the same strategy for Borland C (untested).
cannam@89:   * The __SC__ check is for Symantec.
cannam@89:   */
cannam@89: #  define NO_MEMCPY
cannam@89: #endif
cannam@89: #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
cannam@89: #  define HAVE_MEMCPY
cannam@89: #endif
cannam@89: #ifdef HAVE_MEMCPY
cannam@89: #  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
cannam@89: #    define zmemcpy _fmemcpy
cannam@89: #    define zmemcmp _fmemcmp
cannam@89: #    define zmemzero(dest, len) _fmemset(dest, 0, len)
cannam@89: #  else
cannam@89: #    define zmemcpy memcpy
cannam@89: #    define zmemcmp memcmp
cannam@89: #    define zmemzero(dest, len) memset(dest, 0, len)
cannam@89: #  endif
cannam@89: #else
cannam@89:    void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
cannam@89:    int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
cannam@89:    void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
cannam@89: #endif
cannam@89: 
cannam@89: /* Diagnostic functions */
cannam@89: #ifdef DEBUG
cannam@89: #  include <stdio.h>
cannam@89:    extern int ZLIB_INTERNAL z_verbose;
cannam@89:    extern void ZLIB_INTERNAL z_error OF((char *m));
cannam@89: #  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
cannam@89: #  define Trace(x) {if (z_verbose>=0) fprintf x ;}
cannam@89: #  define Tracev(x) {if (z_verbose>0) fprintf x ;}
cannam@89: #  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
cannam@89: #  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
cannam@89: #  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
cannam@89: #else
cannam@89: #  define Assert(cond,msg)
cannam@89: #  define Trace(x)
cannam@89: #  define Tracev(x)
cannam@89: #  define Tracevv(x)
cannam@89: #  define Tracec(c,x)
cannam@89: #  define Tracecv(c,x)
cannam@89: #endif
cannam@89: 
cannam@89: #ifndef Z_SOLO
cannam@89:    voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
cannam@89:                                     unsigned size));
cannam@89:    void ZLIB_INTERNAL zcfree  OF((voidpf opaque, voidpf ptr));
cannam@89: #endif
cannam@89: 
cannam@89: #define ZALLOC(strm, items, size) \
cannam@89:            (*((strm)->zalloc))((strm)->opaque, (items), (size))
cannam@89: #define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
cannam@89: #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
cannam@89: 
cannam@89: /* Reverse the bytes in a 32-bit value */
cannam@89: #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
cannam@89:                     (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
cannam@89: 
cannam@89: #endif /* ZUTIL_H */