[wxWidgets.git] / src / tiff / tiffcomp.h

/* $Header$ */

/*
 * Copyright (c) 1990-1997 Sam Leffler
 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and 
 * its documentation for any purpose is hereby granted without fee, provided
 * that (i) the above copyright notices and this permission notice appear in
 * all copies of the software and related documentation, and (ii) the names of
 * Sam Leffler and Silicon Graphics may not be used in any advertising or
 * publicity relating to the software without the specific, prior written
 * permission of Sam Leffler and Silicon Graphics.
 * 
 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
 * 
 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
 * OF THIS SOFTWARE.
 */

#ifndef _COMPAT_
#define	_COMPAT_
/*
 * This file contains a hodgepodge of definitions and
 * declarations that are needed to provide compatibility
 * between the native system and the base implementation
 * that the library assumes.
 *
 * NB: This file is a mess.
 */

/*
 * Setup basic type definitions and function declaratations.
 */

/*
 * Simplify Acorn RISC OS identifier (to avoid confusion with Acorn RISC iX
 * and with defunct Unix Risc OS)
 * No need to specify __arm - hey, Acorn might port the OS, no problem here!
 */
#ifdef __acornriscos
#undef __acornriscos
#endif
#if defined(__acorn) && defined(__riscos)
#define __acornriscos
#endif

#if defined(__MWERKS__) || defined(THINK_C)
#ifdef __MACH__
#include <sys/types.h>
#else
#include <unix.h>
#include <math.h>
#endif
#endif

#if defined (__SC__) && !defined (__DMC__)
    #define __SYMANTEC__
#endif

#include <stdio.h>

#if defined(__PPCC__) || defined(__SYMANTEC__) || defined(__MRC__)
#include <types.h>
#elif !defined(__MWERKS__) && !defined(THINK_C) && !defined(__acornriscos) && !defined(applec)
#include <sys/types.h>
#endif

#if defined(VMS)
#include <file.h>
#include <unixio.h>
#elif !defined(__acornriscos)
#include <fcntl.h>
#endif

/*
 * This maze of checks controls defines or not the
 * target system has BSD-style typdedefs declared in
 * an include file and/or whether or not to include
 * <unistd.h> to get the SEEK_* definitions.  Some
 * additional includes are also done to pull in the
 * appropriate definitions we're looking for.
 */
#if defined(__MWERKS__) || defined(THINK_C) || defined(__PPCC__) || defined(__SYMANTEC__) || defined(__MRC__)
#include <stdlib.h>
#ifndef __MACH__
#define	BSDTYPES
#endif
#define	HAVE_UNISTD_H	0
#elif defined(_WINDOWS) || defined(__WIN32__) || defined(_Windows)
#define BSDTYPES
#elif defined(__DJGPP__)
#define BSDTYPES
#elif defined(OS2_16) || defined(OS2_32)
#define	BSDTYPES
#elif defined(__acornriscos)
#include <stdlib.h>
#define	BSDTYPES
#define	HAVE_UNISTD_H	0
#elif defined(VMS)
#define	HAVE_UNISTD_H	0
#else
#define	HAVE_UNISTD_H	1
#endif

/*
 * The library uses the ANSI C/POSIX SEEK_*
 * definitions that should be defined in unistd.h
 * (except on system where they are in stdio.h and
 * there is no unistd.h).
 */
#if !defined(SEEK_SET) && HAVE_UNISTD_H
#include <unistd.h>
#endif

/*
 * The library uses memset, memcpy, and memcmp.
 * ANSI C and System V define these in string.h.
 */
#include <string.h>

/*
 * The BSD typedefs are used throughout the library.
 * If your system doesn't have them in <sys/types.h>,
 * then define BSDTYPES in your Makefile.
 */
#if defined(BSDTYPES)
typedef	unsigned char u_char;
typedef	unsigned short u_short;
typedef	unsigned int u_int;
typedef	unsigned long u_long;
#endif

/*
 * dblparam_t is the type that a double precision
 * floating point value will have on the parameter
 * stack (when coerced by the compiler).
 */
/* Note: on MacPowerPC "extended" is undefined. So only use it for 68K-Macs */
#if defined(__SYMANTEC__) || defined(THINK_C)
typedef extended dblparam_t;
#else
typedef double dblparam_t;
#endif

/*
 * If your compiler supports inline functions, then
 * set INLINE appropriately to get the known hotspots
 * in the library expanded inline.
 */
#if defined(__GNUC__)
#if defined(__STRICT_ANSI__)
#define	INLINE	__inline__
#else
#define	INLINE	inline
#endif
#else /* !__GNUC__ */
#define	INLINE
#endif

/*
 * GLOBALDATA is a macro that is used to define global variables
 * private to the library.  We use this indirection to hide
 * brain-damage in VAXC (and GCC) under VAX/VMS.  In these
 * environments the macro places the variable in a non-shareable
 * program section, which ought to be done by default (sigh!)
 *
 * Apparently DEC are aware of the problem as this behaviour is the
 * default under VMS on AXP.
 *
 * The GNU C variant is untested.
 */
#if defined(VAX) && defined(VMS)
#if defined(VAXC)
#define GLOBALDATA(TYPE,NAME)	extern noshare TYPE NAME
#endif
#if defined(__GNUC__)
#define GLOBALDATA(TYPE,NAME)	extern TYPE NAME \
	asm("_$$PsectAttributes_NOSHR$$" #NAME)
#endif
#else	/* !VAX/VMS */
#define GLOBALDATA(TYPE,NAME)	extern TYPE NAME
#endif

#if defined(__acornriscos)
/*
 * osfcn.h is part of C++Lib on Acorn C/C++, and as such can't be used
 * on C alone. For that reason, the relevant functions are
 * implemented in tif_acorn.c, and the elements from the header
 * file are included here.
 */
#if defined(__cplusplus)
#include <osfcn.h>
#else
#define	O_RDONLY	0
#define	O_WRONLY	1
#define	O_RDWR		2
#define	O_APPEND	8
#define	O_CREAT		0x200
#define	O_TRUNC		0x400
typedef long off_t;
extern int open(const char *name, int flags, int mode);
extern int close(int fd);
extern int write(int fd, const char *buf, int nbytes);
extern int read(int fd, char *buf, int nbytes);
extern off_t lseek(int fd, off_t offset, int whence);
extern int creat(const char *path, int mode);
#endif /* __cplusplus */
#endif /* __acornriscos */

/* Bit and byte order, the default is MSB to LSB */
#ifdef VMS
#undef HOST_FILLORDER
#undef HOST_BIGENDIAN
#define HOST_FILLORDER FILLORDER_LSB2MSB
#define HOST_BIGENDIAN	0
#endif


#endif /* _COMPAT_ */
Commit	Line	Data
b47c832e RR	1	/* $Header$ */
	2
	3	/*
	4	* Copyright (c) 1990-1997 Sam Leffler
	5	* Copyright (c) 1991-1997 Silicon Graphics, Inc.
	6	*
	7	* Permission to use, copy, modify, distribute, and sell this software and
	8	* its documentation for any purpose is hereby granted without fee, provided
	9	* that (i) the above copyright notices and this permission notice appear in
	10	* all copies of the software and related documentation, and (ii) the names of
	11	* Sam Leffler and Silicon Graphics may not be used in any advertising or
	12	* publicity relating to the software without the specific, prior written
	13	* permission of Sam Leffler and Silicon Graphics.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
	16	* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
	17	* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
	18	*
	19	* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
	20	* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
	21	* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
	22	* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
	23	* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
	24	* OF THIS SOFTWARE.
	25	*/
	26
	27	#ifndef _COMPAT_
	28	#define _COMPAT_
	29	/*
	30	* This file contains a hodgepodge of definitions and
	31	* declarations that are needed to provide compatibility
	32	* between the native system and the base implementation
	33	* that the library assumes.
	34	*
	35	* NB: This file is a mess.
	36	*/
	37
	38	/*
	39	* Setup basic type definitions and function declaratations.
	40	*/
	41
	42	/*
	43	* Simplify Acorn RISC OS identifier (to avoid confusion with Acorn RISC iX
	44	* and with defunct Unix Risc OS)
	45	* No need to specify __arm - hey, Acorn might port the OS, no problem here!
	46	*/
	47	#ifdef __acornriscos
	48	#undef __acornriscos
	49	#endif
	50	#if defined(__acorn) && defined(__riscos)
	51	#define __acornriscos
	52	#endif
	53
	54	#if defined(__MWERKS__) \|\| defined(THINK_C)
84e7f94c SC	55	#ifdef __MACH__
	56	#include <sys/types.h>
	57	#else
b47c832e RR	58	#include <unix.h>
	59	#include <math.h>
	60	#endif
84e7f94c	61	#endif
b47c832e	62
4ded51f2 CE	63	#if defined (__SC__) && !defined (__DMC__)
	64	#define __SYMANTEC__
	65	#endif
	66
b47c832e RR	67	#include <stdio.h>
b47c832e RR	68
4ded51f2	69	#if defined(__PPCC__) \|\| defined(__SYMANTEC__) \|\| defined(__MRC__)
b47c832e RR	70	#include <types.h>
	71	#elif !defined(__MWERKS__) && !defined(THINK_C) && !defined(__acornriscos) && !defined(applec)
	72	#include <sys/types.h>
	73	#endif
	74
	75	#if defined(VMS)
	76	#include <file.h>
	77	#include <unixio.h>
	78	#elif !defined(__acornriscos)
	79	#include <fcntl.h>
	80	#endif
	81
	82	/*
	83	* This maze of checks controls defines or not the
	84	* target system has BSD-style typdedefs declared in
	85	* an include file and/or whether or not to include
	86	* <unistd.h> to get the SEEK_* definitions. Some
	87	* additional includes are also done to pull in the
	88	* appropriate definitions we're looking for.
	89	*/
4ded51f2	90	#if defined(__MWERKS__) \|\| defined(THINK_C) \|\| defined(__PPCC__) \|\| defined(__SYMANTEC__) \|\| defined(__MRC__)
b47c832e	91	#include <stdlib.h>
2109485b	92	#ifndef __MACH__
b47c832e	93	#define BSDTYPES
2109485b	94	#endif
b47c832e	95	#define HAVE_UNISTD_H 0
a02b2432	96	#elif defined(_WINDOWS) \|\| defined(__WIN32__) \|\| defined(_Windows)
01fe050c	97	#define BSDTYPES
c1725ec7 VS	98	#elif defined(__DJGPP__)
c1725ec7 VS	99	#define BSDTYPES
b47c832e RR	100	#elif defined(OS2_16) \|\| defined(OS2_32)
	101	#define BSDTYPES
	102	#elif defined(__acornriscos)
	103	#include <stdlib.h>
	104	#define BSDTYPES
	105	#define HAVE_UNISTD_H 0
	106	#elif defined(VMS)
	107	#define HAVE_UNISTD_H 0
	108	#else
	109	#define HAVE_UNISTD_H 1
	110	#endif
	111
	112	/*
	113	* The library uses the ANSI C/POSIX SEEK_*
	114	* definitions that should be defined in unistd.h
	115	* (except on system where they are in stdio.h and
	116	* there is no unistd.h).
	117	*/
	118	#if !defined(SEEK_SET) && HAVE_UNISTD_H
	119	#include <unistd.h>
	120	#endif
	121
	122	/*
	123	* The library uses memset, memcpy, and memcmp.
	124	* ANSI C and System V define these in string.h.
	125	*/
	126	#include <string.h>
	127
	128	/*
	129	* The BSD typedefs are used throughout the library.
	130	* If your system doesn't have them in <sys/types.h>,
	131	* then define BSDTYPES in your Makefile.
	132	*/
	133	#if defined(BSDTYPES)
	134	typedef unsigned char u_char;
	135	typedef unsigned short u_short;
	136	typedef unsigned int u_int;
	137	typedef unsigned long u_long;
	138	#endif
	139
	140	/*
	141	* dblparam_t is the type that a double precision
	142	* floating point value will have on the parameter
	143	* stack (when coerced by the compiler).
	144	*/
	145	/* Note: on MacPowerPC "extended" is undefined. So only use it for 68K-Macs */
4ded51f2	146	#if defined(__SYMANTEC__) \|\| defined(THINK_C)
b47c832e RR	147	typedef extended dblparam_t;
	148	#else
	149	typedef double dblparam_t;
	150	#endif
	151
	152	/*
	153	* If your compiler supports inline functions, then
	154	* set INLINE appropriately to get the known hotspots
	155	* in the library expanded inline.
	156	*/
	157	#if defined(__GNUC__)
	158	#if defined(__STRICT_ANSI__)
	159	#define INLINE __inline__
	160	#else
	161	#define INLINE inline
	162	#endif
	163	#else /* !__GNUC__ */
	164	#define INLINE
	165	#endif
	166
	167	/*
	168	* GLOBALDATA is a macro that is used to define global variables
	169	* private to the library. We use this indirection to hide
	170	* brain-damage in VAXC (and GCC) under VAX/VMS. In these
	171	* environments the macro places the variable in a non-shareable
	172	* program section, which ought to be done by default (sigh!)
	173	*
	174	* Apparently DEC are aware of the problem as this behaviour is the
	175	* default under VMS on AXP.
	176	*
	177	* The GNU C variant is untested.
	178	*/
	179	#if defined(VAX) && defined(VMS)
	180	#if defined(VAXC)
	181	#define GLOBALDATA(TYPE,NAME) extern noshare TYPE NAME
	182	#endif
	183	#if defined(__GNUC__)
	184	#define GLOBALDATA(TYPE,NAME) extern TYPE NAME \
	185	asm("_$$PsectAttributes_NOSHR$$" #NAME)
	186	#endif
	187	#else /* !VAX/VMS */
	188	#define GLOBALDATA(TYPE,NAME) extern TYPE NAME
	189	#endif
	190
	191	#if defined(__acornriscos)
	192	/*
	193	* osfcn.h is part of C++Lib on Acorn C/C++, and as such can't be used
	194	* on C alone. For that reason, the relevant functions are
	195	* implemented in tif_acorn.c, and the elements from the header
	196	* file are included here.
	197	*/
	198	#if defined(__cplusplus)
	199	#include <osfcn.h>
	200	#else
	201	#define O_RDONLY 0
	202	#define O_WRONLY 1
	203	#define O_RDWR 2
	204	#define O_APPEND 8
	205	#define O_CREAT 0x200
	206	#define O_TRUNC 0x400
	207	typedef long off_t;
	208	extern int open(const char *name, int flags, int mode);
	209	extern int close(int fd);
	210	extern int write(int fd, const char *buf, int nbytes);
211	extern int read(int fd, char *buf, int nbytes);
212	extern off_t lseek(int fd, off_t offset, int whence);
213	extern int creat(const char *path, int mode);
214	#endif /* __cplusplus */
215	#endif /* __acornriscos */
216
217	/* Bit and byte order, the default is MSB to LSB */
218	#ifdef VMS
219	#undef HOST_FILLORDER
220	#undef HOST_BIGENDIAN
221	#define HOST_FILLORDER FILLORDER_LSB2MSB
222	#define HOST_BIGENDIAN 0
223	#endif
224
225
226	#endif /* _COMPAT_ */