Source/LibTIFF/tif_win32.c - platform/external/free-image - Git at Google

 /* $Id: tif_win32.c,v 1.25 2009/09/06 13:11:29 drolon Exp $ */

 /*
  * Copyright (c) 1988-1997 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.
  */

 /*
  * TIFF Library Win32-specific Routines.  Adapted from tif_unix.c 4/5/95 by
  * Scott Wagner (wagner@itek.com), Itek Graphix, Rochester, NY USA
  */
 #include "tiffiop.h"

 #include <windows.h>

 static tsize_t
 _tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size)
 {
 	DWORD dwSizeRead;
 	if (!ReadFile(fd, buf, size, &dwSizeRead, NULL))
 		return(0);
 	return ((tsize_t) dwSizeRead);
 }

 static tsize_t
 _tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size)
 {
 	DWORD dwSizeWritten;
 	if (!WriteFile(fd, buf, size, &dwSizeWritten, NULL))
 		return(0);
 	return ((tsize_t) dwSizeWritten);
 }

 static toff_t
 _tiffSeekProc(thandle_t fd, toff_t off, int whence)
 {
         ULARGE_INTEGER li;
 	DWORD dwMoveMethod;

 	li.QuadPart = off;

 	switch(whence)
 	{
 	case SEEK_SET:
 		dwMoveMethod = FILE_BEGIN;
 		break;
 	case SEEK_CUR:
 		dwMoveMethod = FILE_CURRENT;
 		break;
 	case SEEK_END:
 		dwMoveMethod = FILE_END;
 		break;
 	default:
 		dwMoveMethod = FILE_BEGIN;
 		break;
 	}
 	return ((toff_t)SetFilePointer(fd, (LONG) li.LowPart,
 				       (PLONG)&li.HighPart, dwMoveMethod));
 }

 static int
 _tiffCloseProc(thandle_t fd)
 {
 	return (CloseHandle(fd) ? 0 : -1);
 }

 static toff_t
 _tiffSizeProc(thandle_t fd)
 {
 	return ((toff_t)GetFileSize(fd, NULL));
 }

 static int
 _tiffDummyMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
 {
 	(void) fd;
 	(void) pbase;
 	(void) psize;
 	return (0);
 }

 /*
  * From "Hermann Josef Hill" <lhill@rhein-zeitung.de>:
  *
  * Windows uses both a handle and a pointer for file mapping,
  * but according to the SDK documentation and Richter's book
  * "Advanced Windows Programming" it is safe to free the handle
  * after obtaining the file mapping pointer
  *
  * This removes a nasty OS dependency and cures a problem
  * with Visual C++ 5.0
  */
 static int
 _tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
 {
 	toff_t size;
 	HANDLE hMapFile;

 	if ((size = _tiffSizeProc(fd)) == 0xFFFFFFFF)
 		return (0);
 	hMapFile = CreateFileMapping(fd, NULL, PAGE_READONLY, 0, size, NULL);
 	if (hMapFile == NULL)
 		return (0);
 	*pbase = MapViewOfFile(hMapFile, FILE_MAP_READ, 0, 0, 0);
 	CloseHandle(hMapFile);
 	if (*pbase == NULL)
 		return (0);
 	*psize = size;
 	return(1);
 }

 static void
 _tiffDummyUnmapProc(thandle_t fd, tdata_t base, toff_t size)
 {
 	(void) fd;
 	(void) base;
 	(void) size;
 }

 static void
 _tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size)
 {
 	UnmapViewOfFile(base);
 }

 /*
  * Open a TIFF file descriptor for read/writing.
  * Note that TIFFFdOpen and TIFFOpen recognise the character 'u' in the mode
  * string, which forces the file to be opened unmapped.
  */
 TIFF*
 TIFFFdOpen(int ifd, const char* name, const char* mode)
 {
 	TIFF* tif;
 	BOOL fSuppressMap = (mode[1] == 'u' || (mode[1]!=0 && mode[2] == 'u'));

 	tif = TIFFClientOpen(name, mode, (thandle_t)ifd,
 			_tiffReadProc, _tiffWriteProc,
 			_tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
 			fSuppressMap ? _tiffDummyMapProc : _tiffMapProc,
 			fSuppressMap ? _tiffDummyUnmapProc : _tiffUnmapProc);
 	if (tif)
 		tif->tif_fd = ifd;
 	return (tif);
 }

 #ifndef _WIN32_WCE

 /*
  * Open a TIFF file for read/writing.
  */
 TIFF*
 TIFFOpen(const char* name, const char* mode)
 {
 	static const char module[] = "TIFFOpen";
 	thandle_t fd;
 	int m;
 	DWORD dwMode;
 	TIFF* tif;

 	m = _TIFFgetMode(mode, module);

 	switch(m)
 	{
 	case O_RDONLY:
 		dwMode = OPEN_EXISTING;
 		break;
 	case O_RDWR:
 		dwMode = OPEN_ALWAYS;
 		break;
 	case O_RDWR|O_CREAT:
 		dwMode = OPEN_ALWAYS;
 		break;
 	case O_RDWR|O_TRUNC:
 		dwMode = CREATE_ALWAYS;
 		break;
 	case O_RDWR|O_CREAT|O_TRUNC:
 		dwMode = CREATE_ALWAYS;
 		break;
 	default:
 		return ((TIFF*)0);
 	}
 	fd = (thandle_t)CreateFileA(name,
 		(m == O_RDONLY)?GENERIC_READ:(GENERIC_READ | GENERIC_WRITE),
 		FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, dwMode,
 		(m == O_RDONLY)?FILE_ATTRIBUTE_READONLY:FILE_ATTRIBUTE_NORMAL,
 		NULL);
 	if (fd == INVALID_HANDLE_VALUE) {
 		TIFFErrorExt(0, module, "%s: Cannot open", name);
 		return ((TIFF *)0);
 	}

 	tif = TIFFFdOpen((int)fd, name, mode);
 	if(!tif)
 		CloseHandle(fd);
 	return tif;
 }

 /*
  * Open a TIFF file with a Unicode filename, for read/writing.
  */
 TIFF*
 TIFFOpenW(const wchar_t* name, const char* mode)
 {
 	static const char module[] = "TIFFOpenW";
 	thandle_t fd;
 	int m;
 	DWORD dwMode;
 	int mbsize;
 	char *mbname;
 	TIFF *tif;

 	m = _TIFFgetMode(mode, module);

 	switch(m) {
 		case O_RDONLY:			dwMode = OPEN_EXISTING; break;
 		case O_RDWR:			dwMode = OPEN_ALWAYS;   break;
 		case O_RDWR|O_CREAT:		dwMode = OPEN_ALWAYS;   break;
 		case O_RDWR|O_TRUNC:		dwMode = CREATE_ALWAYS; break;
 		case O_RDWR|O_CREAT|O_TRUNC:	dwMode = CREATE_ALWAYS; break;
 		default:			return ((TIFF*)0);
 	}

 	fd = (thandle_t)CreateFileW(name,
 		(m == O_RDONLY)?GENERIC_READ:(GENERIC_READ|GENERIC_WRITE),
 		FILE_SHARE_READ, NULL, dwMode,
 		(m == O_RDONLY)?FILE_ATTRIBUTE_READONLY:FILE_ATTRIBUTE_NORMAL,
 		NULL);
 	if (fd == INVALID_HANDLE_VALUE) {
 		TIFFErrorExt(0, module, "%S: Cannot open", name);
 		return ((TIFF *)0);
 	}

 	mbname = NULL;
 	mbsize = WideCharToMultiByte(CP_ACP, 0, name, -1, NULL, 0, NULL, NULL);
 	if (mbsize > 0) {
 		mbname = (char *)_TIFFmalloc(mbsize);
 		if (!mbname) {
 			TIFFErrorExt(0, module,
 			"Can't allocate space for filename conversion buffer");
 			return ((TIFF*)0);
 		}

 		WideCharToMultiByte(CP_ACP, 0, name, -1, mbname, mbsize,
 				    NULL, NULL);
 	}

 	tif = TIFFFdOpen((int)fd,
 			 (mbname != NULL) ? mbname : "<unknown>", mode);
 	if(!tif)
 		CloseHandle(fd);

 	_TIFFfree(mbname);

 	return tif;
 }

 #endif /* ndef _WIN32_WCE */


 tdata_t
 _TIFFmalloc(tsize_t s)
 {
 	return ((tdata_t)GlobalAlloc(GMEM_FIXED, s));
 }

 void
 _TIFFfree(tdata_t p)
 {
 	GlobalFree(p);
 	return;
 }

 tdata_t
 _TIFFrealloc(tdata_t p, tsize_t s)
 {
 	void* pvTmp;
 	tsize_t old;

 	if(p == NULL)
 		return ((tdata_t)GlobalAlloc(GMEM_FIXED, s));

 	old = GlobalSize(p);

 	if (old>=s) {
 		if ((pvTmp = GlobalAlloc(GMEM_FIXED, s)) != NULL) {
 			CopyMemory(pvTmp, p, s);
 			GlobalFree(p);
 		}
 	} else {
 		if ((pvTmp = GlobalAlloc(GMEM_FIXED, s)) != NULL) {
 			CopyMemory(pvTmp, p, old);
 			GlobalFree(p);
 		}
 	}
 	return ((tdata_t)pvTmp);
 }

 void
 _TIFFmemset(void* p, int v, tsize_t c)
 {
 	FillMemory(p, c, (BYTE)v);
 }

 void
 _TIFFmemcpy(void* d, const tdata_t s, tsize_t c)
 {
 	CopyMemory(d, s, c);
 }

 int
 _TIFFmemcmp(const tdata_t p1, const tdata_t p2, tsize_t c)
 {
 	register const BYTE *pb1 = (const BYTE *) p1;
 	register const BYTE *pb2 = (const BYTE *) p2;
 	register DWORD dwTmp = c;
 	register int iTmp;
 	for (iTmp = 0; dwTmp-- && !iTmp; iTmp = (int)*pb1++ - (int)*pb2++)
 		;
 	return (iTmp);
 }

 #ifndef _WIN32_WCE

 static void
 Win32WarningHandler(const char* module, const char* fmt, va_list ap)
 {
 #ifndef TIF_PLATFORM_CONSOLE
 	LPTSTR szTitle;
 	LPTSTR szTmp;
 	LPCTSTR szTitleText = "%s Warning";
 	LPCTSTR szDefaultModule = "LIBTIFF";
 	LPCTSTR szTmpModule = (module == NULL) ? szDefaultModule : module;
 	if ((szTitle = (LPTSTR)LocalAlloc(LMEM_FIXED, (strlen(szTmpModule) +
 		strlen(szTitleText) + strlen(fmt) + 128)*sizeof(char))) == NULL)
 		return;
 	sprintf(szTitle, szTitleText, szTmpModule);
 	szTmp = szTitle + (strlen(szTitle)+2)*sizeof(char);
 	vsprintf(szTmp, fmt, ap);
 	MessageBoxA(GetFocus(), szTmp, szTitle, MB_OK | MB_ICONINFORMATION);
 	LocalFree(szTitle);
 	return;
 #else
 	if (module != NULL)
 		fprintf(stderr, "%s: ", module);
 	fprintf(stderr, "Warning, ");
 	vfprintf(stderr, fmt, ap);
 	fprintf(stderr, ".\n");
 #endif
 }
 TIFFErrorHandler _TIFFwarningHandler = Win32WarningHandler;

 static void
 Win32ErrorHandler(const char* module, const char* fmt, va_list ap)
 {
 #ifndef TIF_PLATFORM_CONSOLE
 	LPTSTR szTitle;
 	LPTSTR szTmp;
 	LPCTSTR szTitleText = "%s Error";
 	LPCTSTR szDefaultModule = "LIBTIFF";
 	LPCTSTR szTmpModule = (module == NULL) ? szDefaultModule : module;
 	if ((szTitle = (LPTSTR)LocalAlloc(LMEM_FIXED, (strlen(szTmpModule) +
 		strlen(szTitleText) + strlen(fmt) + 128)*sizeof(char))) == NULL)
 		return;
 	sprintf(szTitle, szTitleText, szTmpModule);
 	szTmp = szTitle + (strlen(szTitle)+2)*sizeof(char);
 	vsprintf(szTmp, fmt, ap);
 	MessageBoxA(GetFocus(), szTmp, szTitle, MB_OK | MB_ICONEXCLAMATION);
 	LocalFree(szTitle);
 	return;
 #else
 	if (module != NULL)
 		fprintf(stderr, "%s: ", module);
 	vfprintf(stderr, fmt, ap);
 	fprintf(stderr, ".\n");
 #endif
 }
 TIFFErrorHandler _TIFFerrorHandler = Win32ErrorHandler;

 #endif /* ndef _WIN32_WCE */

 /* vim: set ts=8 sts=8 sw=8 noet: */
	/* $Id: tif_win32.c,v 1.25 2009/09/06 13:11:29 drolon Exp $ */

	/*
	* Copyright (c) 1988-1997 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.
	*/

	/*
	* TIFF Library Win32-specific Routines. Adapted from tif_unix.c 4/5/95 by
	* Scott Wagner (wagner@itek.com), Itek Graphix, Rochester, NY USA
	*/
	#include "tiffiop.h"

	#include <windows.h>

	static tsize_t
	_tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size)
	{
	DWORD dwSizeRead;
	if (!ReadFile(fd, buf, size, &dwSizeRead, NULL))
	return(0);
	return ((tsize_t) dwSizeRead);
	}

	static tsize_t
	_tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size)
	{
	DWORD dwSizeWritten;
	if (!WriteFile(fd, buf, size, &dwSizeWritten, NULL))
	return(0);
	return ((tsize_t) dwSizeWritten);
	}

	static toff_t
	_tiffSeekProc(thandle_t fd, toff_t off, int whence)
	{
	ULARGE_INTEGER li;
	DWORD dwMoveMethod;

	li.QuadPart = off;

	switch(whence)
	{
	case SEEK_SET:
	dwMoveMethod = FILE_BEGIN;
	break;
	case SEEK_CUR:
	dwMoveMethod = FILE_CURRENT;
	break;
	case SEEK_END:
	dwMoveMethod = FILE_END;
	break;
	default:
	dwMoveMethod = FILE_BEGIN;
	break;
	}
	return ((toff_t)SetFilePointer(fd, (LONG) li.LowPart,
	(PLONG)&li.HighPart, dwMoveMethod));
	}

	static int
	_tiffCloseProc(thandle_t fd)
	{
	return (CloseHandle(fd) ? 0 : -1);
	}

	static toff_t
	_tiffSizeProc(thandle_t fd)
	{
	return ((toff_t)GetFileSize(fd, NULL));
	}

	static int
	_tiffDummyMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
	{
	(void) fd;
	(void) pbase;
	(void) psize;
	return (0);
	}

	/*
	* From "Hermann Josef Hill" <lhill@rhein-zeitung.de>:
	*
	* Windows uses both a handle and a pointer for file mapping,
	* but according to the SDK documentation and Richter's book
	* "Advanced Windows Programming" it is safe to free the handle
	* after obtaining the file mapping pointer
	*
	* This removes a nasty OS dependency and cures a problem
	* with Visual C++ 5.0
	*/
	static int
	_tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
	{
	toff_t size;
	HANDLE hMapFile;

	if ((size = _tiffSizeProc(fd)) == 0xFFFFFFFF)
	return (0);
	hMapFile = CreateFileMapping(fd, NULL, PAGE_READONLY, 0, size, NULL);
	if (hMapFile == NULL)
	return (0);
	*pbase = MapViewOfFile(hMapFile, FILE_MAP_READ, 0, 0, 0);
	CloseHandle(hMapFile);
	if (*pbase == NULL)
	return (0);
	*psize = size;
	return(1);
	}

	static void
	_tiffDummyUnmapProc(thandle_t fd, tdata_t base, toff_t size)
	{
	(void) fd;
	(void) base;
	(void) size;
	}

	static void
	_tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size)
	{
	UnmapViewOfFile(base);
	}

	/*
	* Open a TIFF file descriptor for read/writing.
	* Note that TIFFFdOpen and TIFFOpen recognise the character 'u' in the mode
	* string, which forces the file to be opened unmapped.
	*/
	TIFF*
	TIFFFdOpen(int ifd, const char* name, const char* mode)
	{
	TIFF* tif;
	BOOL fSuppressMap = (mode[1] == 'u' \|\| (mode[1]!=0 && mode[2] == 'u'));

	tif = TIFFClientOpen(name, mode, (thandle_t)ifd,
	_tiffReadProc, _tiffWriteProc,
	_tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
	fSuppressMap ? _tiffDummyMapProc : _tiffMapProc,
	fSuppressMap ? _tiffDummyUnmapProc : _tiffUnmapProc);
	if (tif)
	tif->tif_fd = ifd;
	return (tif);
	}

	#ifndef _WIN32_WCE

	/*
	* Open a TIFF file for read/writing.
	*/
	TIFF*
	TIFFOpen(const char* name, const char* mode)
	{
	static const char module[] = "TIFFOpen";
	thandle_t fd;
	int m;
	DWORD dwMode;
	TIFF* tif;

	m = _TIFFgetMode(mode, module);

	switch(m)
	{
	case O_RDONLY:
	dwMode = OPEN_EXISTING;
	break;
	case O_RDWR:
	dwMode = OPEN_ALWAYS;
	break;
	case O_RDWR\|O_CREAT:
	dwMode = OPEN_ALWAYS;
	break;
	case O_RDWR\|O_TRUNC:
	dwMode = CREATE_ALWAYS;
	break;
	case O_RDWR\|O_CREAT\|O_TRUNC:
	dwMode = CREATE_ALWAYS;
	break;
	default:
	return ((TIFF*)0);
	}
	fd = (thandle_t)CreateFileA(name,
	(m == O_RDONLY)?GENERIC_READ:(GENERIC_READ \| GENERIC_WRITE),
	FILE_SHARE_READ \| FILE_SHARE_WRITE, NULL, dwMode,
	(m == O_RDONLY)?FILE_ATTRIBUTE_READONLY:FILE_ATTRIBUTE_NORMAL,
	NULL);
	if (fd == INVALID_HANDLE_VALUE) {
	TIFFErrorExt(0, module, "%s: Cannot open", name);
	return ((TIFF *)0);
	}

	tif = TIFFFdOpen((int)fd, name, mode);
	if(!tif)
	CloseHandle(fd);
	return tif;
	}

	/*
	* Open a TIFF file with a Unicode filename, for read/writing.
	*/
	TIFF*
	TIFFOpenW(const wchar_t* name, const char* mode)
	{
	static const char module[] = "TIFFOpenW";
	thandle_t fd;
	int m;
	DWORD dwMode;
	int mbsize;
	char *mbname;
	TIFF *tif;

	m = _TIFFgetMode(mode, module);

	switch(m) {
	case O_RDONLY: dwMode = OPEN_EXISTING; break;
	case O_RDWR: dwMode = OPEN_ALWAYS; break;
	case O_RDWR\|O_CREAT: dwMode = OPEN_ALWAYS; break;
	case O_RDWR\|O_TRUNC: dwMode = CREATE_ALWAYS; break;
	case O_RDWR\|O_CREAT\|O_TRUNC: dwMode = CREATE_ALWAYS; break;
	default: return ((TIFF*)0);
	}

	fd = (thandle_t)CreateFileW(name,
	(m == O_RDONLY)?GENERIC_READ:(GENERIC_READ\|GENERIC_WRITE),
	FILE_SHARE_READ, NULL, dwMode,
	(m == O_RDONLY)?FILE_ATTRIBUTE_READONLY:FILE_ATTRIBUTE_NORMAL,
	NULL);
	if (fd == INVALID_HANDLE_VALUE) {
	TIFFErrorExt(0, module, "%S: Cannot open", name);
	return ((TIFF *)0);
	}

	mbname = NULL;
	mbsize = WideCharToMultiByte(CP_ACP, 0, name, -1, NULL, 0, NULL, NULL);
	if (mbsize > 0) {
	mbname = (char *)_TIFFmalloc(mbsize);
	if (!mbname) {
	TIFFErrorExt(0, module,
	"Can't allocate space for filename conversion buffer");
	return ((TIFF*)0);
	}

	WideCharToMultiByte(CP_ACP, 0, name, -1, mbname, mbsize,
	NULL, NULL);
	}

	tif = TIFFFdOpen((int)fd,
	(mbname != NULL) ? mbname : "<unknown>", mode);
	if(!tif)
	CloseHandle(fd);

	_TIFFfree(mbname);

	return tif;
	}

	#endif /* ndef _WIN32_WCE */


	tdata_t
	_TIFFmalloc(tsize_t s)
	{
	return ((tdata_t)GlobalAlloc(GMEM_FIXED, s));
	}

	void
	_TIFFfree(tdata_t p)
	{
	GlobalFree(p);
	return;
	}

	tdata_t
	_TIFFrealloc(tdata_t p, tsize_t s)
	{
	void* pvTmp;
	tsize_t old;

	if(p == NULL)
	return ((tdata_t)GlobalAlloc(GMEM_FIXED, s));

	old = GlobalSize(p);

	if (old>=s) {
	if ((pvTmp = GlobalAlloc(GMEM_FIXED, s)) != NULL) {
	CopyMemory(pvTmp, p, s);
	GlobalFree(p);
	}
	} else {
	if ((pvTmp = GlobalAlloc(GMEM_FIXED, s)) != NULL) {
	CopyMemory(pvTmp, p, old);
	GlobalFree(p);
	}
	}
	return ((tdata_t)pvTmp);
	}

	void
	_TIFFmemset(void* p, int v, tsize_t c)
	{
	FillMemory(p, c, (BYTE)v);
	}

	void
	_TIFFmemcpy(void* d, const tdata_t s, tsize_t c)
	{
	CopyMemory(d, s, c);
	}

	int
	_TIFFmemcmp(const tdata_t p1, const tdata_t p2, tsize_t c)
	{
	register const BYTE pb1 = (const BYTE ) p1;
	register const BYTE pb2 = (const BYTE ) p2;
	register DWORD dwTmp = c;
	register int iTmp;
	for (iTmp = 0; dwTmp-- && !iTmp; iTmp = (int)pb1++ - (int)pb2++)
	;
	return (iTmp);
	}

	#ifndef _WIN32_WCE

	static void
	Win32WarningHandler(const char* module, const char* fmt, va_list ap)
	{
	#ifndef TIF_PLATFORM_CONSOLE
	LPTSTR szTitle;
	LPTSTR szTmp;
	LPCTSTR szTitleText = "%s Warning";
	LPCTSTR szDefaultModule = "LIBTIFF";
	LPCTSTR szTmpModule = (module == NULL) ? szDefaultModule : module;
	if ((szTitle = (LPTSTR)LocalAlloc(LMEM_FIXED, (strlen(szTmpModule) +
	strlen(szTitleText) + strlen(fmt) + 128)*sizeof(char))) == NULL)
	return;
	sprintf(szTitle, szTitleText, szTmpModule);
	szTmp = szTitle + (strlen(szTitle)+2)*sizeof(char);
	vsprintf(szTmp, fmt, ap);
	MessageBoxA(GetFocus(), szTmp, szTitle, MB_OK \| MB_ICONINFORMATION);
	LocalFree(szTitle);
	return;
	#else
	if (module != NULL)
	fprintf(stderr, "%s: ", module);
	fprintf(stderr, "Warning, ");
	vfprintf(stderr, fmt, ap);
	fprintf(stderr, ".\n");
	#endif
	}
	TIFFErrorHandler _TIFFwarningHandler = Win32WarningHandler;

	static void
	Win32ErrorHandler(const char* module, const char* fmt, va_list ap)
	{
	#ifndef TIF_PLATFORM_CONSOLE
	LPTSTR szTitle;
	LPTSTR szTmp;
	LPCTSTR szTitleText = "%s Error";
	LPCTSTR szDefaultModule = "LIBTIFF";
	LPCTSTR szTmpModule = (module == NULL) ? szDefaultModule : module;
	if ((szTitle = (LPTSTR)LocalAlloc(LMEM_FIXED, (strlen(szTmpModule) +
	strlen(szTitleText) + strlen(fmt) + 128)*sizeof(char))) == NULL)
	return;
	sprintf(szTitle, szTitleText, szTmpModule);
	szTmp = szTitle + (strlen(szTitle)+2)*sizeof(char);
	vsprintf(szTmp, fmt, ap);
	MessageBoxA(GetFocus(), szTmp, szTitle, MB_OK \| MB_ICONEXCLAMATION);
	LocalFree(szTitle);
	return;
	#else
	if (module != NULL)
	fprintf(stderr, "%s: ", module);
	vfprintf(stderr, fmt, ap);
	fprintf(stderr, ".\n");
	#endif
	}
	TIFFErrorHandler _TIFFerrorHandler = Win32ErrorHandler;

	#endif /* ndef _WIN32_WCE */

	/* vim: set ts=8 sts=8 sw=8 noet: */