590 lines
8.3 KiB
C
590 lines
8.3 KiB
C
/* $Header: /roq/tiff/tif_win32.c 1 11/02/99 4:40p Zaphod $ */
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/*
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* Copyright (c) 1988-1996 Sam Leffler
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* Copyright (c) 1991-1996 Silicon Graphics, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that (i) the above copyright notices and this permission notice appear in
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* all copies of the software and related documentation, and (ii) the names of
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* Sam Leffler and Silicon Graphics may not be used in any advertising or
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* publicity relating to the software without the specific, prior written
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* permission of Sam Leffler and Silicon Graphics.
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*
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* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*
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* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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/*
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* TIFF Library Win32-specific Routines. Adapted from tif_unix.c 4/5/95 by
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* Scott Wagner (wagner@itek.com), Itek Graphix, Rochester, NY USA
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*/
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#include <windows.h>
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#include "tiffiop.h"
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static tsize_t
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_tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size)
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{
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DWORD dwSizeRead;
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if (!ReadFile(fd, buf, size, &dwSizeRead, NULL))
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return(0);
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return ((tsize_t) dwSizeRead);
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}
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static tsize_t
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_tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size)
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{
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DWORD dwSizeWritten;
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if (!WriteFile(fd, buf, size, &dwSizeWritten, NULL))
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return(0);
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return ((tsize_t) dwSizeWritten);
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}
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static toff_t
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_tiffSeekProc(thandle_t fd, toff_t off, int whence)
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{
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DWORD dwMoveMethod;
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switch(whence)
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{
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case 0:
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dwMoveMethod = FILE_BEGIN;
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break;
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case 1:
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dwMoveMethod = FILE_CURRENT;
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break;
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case 2:
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dwMoveMethod = FILE_END;
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break;
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default:
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dwMoveMethod = FILE_BEGIN;
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break;
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}
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return ((toff_t)SetFilePointer(fd, off, NULL, dwMoveMethod));
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}
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static int
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_tiffCloseProc(thandle_t fd)
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{
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return (CloseHandle(fd) ? 0 : -1);
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}
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static toff_t
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_tiffSizeProc(thandle_t fd)
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{
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return ((toff_t)GetFileSize(fd, NULL));
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}
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/*
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* Because Windows uses both a handle and a pointer for file mapping, and only
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* the pointer is returned, the handle must be saved for later use (by the
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* unmap function). To do this, the tiff structure has an extra member,
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* pv_map_handle, which is contiguous with (4 bytes or one 32-bit word above)
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* the tif_base parameter which is passed as *pbase to the map function.
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* pv_map_handle is then accessed indirectly (and perhaps somewhat unsafely)
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* as an offset from the *pbase parameter by _tiffMapProc. The handle thus
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* created and saved is destroyed by _tiffUnmapProc, which does not need size
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* in Win32 but receives the map handle value in the size parameter instead.
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*/
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#pragma argsused
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static int
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_tiffDummyMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
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{
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return(0);
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}
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static int
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_tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
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{
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toff_t size;
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HANDLE *phMapFile;
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if ((size = _tiffSizeProc(fd)) == (toff_t)-1)
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return(0);
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phMapFile = (HANDLE *)(((BYTE *)pbase) + 4);
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if ((*phMapFile = CreateFileMapping(fd, NULL, PAGE_READONLY, 0, size, NULL))
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== NULL)
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return(0);
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if ((*pbase = MapViewOfFile(*phMapFile, FILE_MAP_READ, 0, 0, 0)) ==
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NULL)
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{
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CloseHandle(*phMapFile);
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*phMapFile = NULL;
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return(0);
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}
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*psize = size;
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return(1);
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}
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#pragma argsused
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static void
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_tiffDummyUnmapProc(thandle_t fd, tdata_t base, toff_t size)
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{
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return;
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}
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static void
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_tiffUnmapProc(thandle_t fd, tdata_t base, toff_t map_handle)
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{
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UnmapViewOfFile(base);
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CloseHandle((HANDLE)map_handle);
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return;
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}
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/*
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* Open a TIFF file descriptor for read/writing.
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* Note that TIFFFdOpen and TIFFOpen recognise the character 'u' in the mode
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* string, which forces the file to be opened unmapped.
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*/
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TIFF*
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TIFFFdOpen(int ifd, const char* name, const char* mode)
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{
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TIFF* tif;
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BOOL fSuppressMap = (mode[1] == 'u' || mode[2] == 'u');
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tif = TIFFClientOpen(name, mode,
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(thandle_t)ifd,
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_tiffReadProc, _tiffWriteProc,
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_tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
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fSuppressMap ? _tiffDummyMapProc : _tiffMapProc,
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fSuppressMap ? _tiffDummyUnmapProc : _tiffUnmapProc);
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if (tif)
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tif->tif_fd = ifd;
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return (tif);
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}
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/*
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* Open a TIFF file for read/writing.
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*/
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TIFF*
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TIFFOpen(const char* name, const char* mode)
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{
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static const char module[] = "TIFFOpen";
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thandle_t fd;
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int m;
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DWORD dwMode;
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m = _TIFFgetMode(mode, module);
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switch(m)
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{
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case O_RDONLY:
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dwMode = OPEN_EXISTING;
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break;
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case O_RDWR:
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dwMode = OPEN_ALWAYS;
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break;
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case O_RDWR|O_CREAT:
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dwMode = CREATE_NEW;
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break;
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case O_RDWR|O_TRUNC:
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dwMode = CREATE_ALWAYS;
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break;
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case O_RDWR|O_CREAT|O_TRUNC:
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dwMode = CREATE_ALWAYS;
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break;
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default:
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return ((TIFF*)0);
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}
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fd = (thandle_t)CreateFile(name, (m == O_RDONLY) ? GENERIC_READ :
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(GENERIC_READ | GENERIC_WRITE), FILE_SHARE_READ, NULL, dwMode,
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(m == O_RDONLY) ? FILE_ATTRIBUTE_READONLY : FILE_ATTRIBUTE_NORMAL, NULL);
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if (fd == INVALID_HANDLE_VALUE) {
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TIFFError(module, "%s: Cannot open", name);
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return ((TIFF *)0);
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}
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return (TIFFFdOpen((int)fd, name, mode));
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}
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tdata_t
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_TIFFmalloc(tsize_t s)
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{
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return ((tdata_t)GlobalAlloc(GMEM_FIXED, s));
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}
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void
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_TIFFfree(tdata_t p)
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{
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GlobalFree(p);
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return;
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}
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tdata_t
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_TIFFrealloc(tdata_t p, tsize_t s)
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{
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void* pvTmp;
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if ((pvTmp = GlobalReAlloc(p, s, 0)) == NULL) {
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if ((pvTmp = GlobalAlloc(GMEM_FIXED, s)) != NULL) {
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CopyMemory(pvTmp, p, s);
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GlobalFree(p);
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}
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}
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return ((tdata_t)pvTmp);
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}
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void
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_TIFFmemset(void* p, int v, tsize_t c)
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{
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FillMemory(p, c, (BYTE)v);
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}
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void
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_TIFFmemcpy(void* d, const tdata_t s, tsize_t c)
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{
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CopyMemory(d, s, c);
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}
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int
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_TIFFmemcmp(const tdata_t p1, const tdata_t p2, tsize_t c)
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{
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register const BYTE *pb1 = p1;
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register const BYTE *pb2 = p2;
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register DWORD dwTmp = c;
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register int iTmp;
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for (iTmp = 0; dwTmp-- && !iTmp; iTmp = (int)*pb1++ - (int)*pb2++)
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;
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return (iTmp);
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}
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static void
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Win32WarningHandler(const char* module, const char* fmt, va_list ap)
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{
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LPTSTR szTitle;
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LPTSTR szTmp;
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LPCTSTR szTitleText = "%s Warning";
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LPCTSTR szDefaultModule = "TIFFLIB";
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szTmp = (module == NULL) ? (LPTSTR)szDefaultModule : (LPTSTR)module;
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if ((szTitle = (LPTSTR)LocalAlloc(LMEM_FIXED, (lstrlen(szTmp) +
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lstrlen(szTitleText) + lstrlen(fmt) + 128)*sizeof(TCHAR))) == NULL)
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return;
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wsprintf(szTitle, szTitleText, szTmp);
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szTmp = szTitle + (lstrlen(szTitle)+2)*sizeof(TCHAR);
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wvsprintf(szTmp, fmt, ap);
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MessageBox(GetFocus(), szTmp, szTitle, MB_OK | MB_ICONINFORMATION);
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LocalFree(szTitle);
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return;
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}
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TIFFErrorHandler _TIFFwarningHandler = Win32WarningHandler;
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static void
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Win32ErrorHandler(const char* module, const char* fmt, va_list ap)
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{
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LPTSTR szTitle;
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LPTSTR szTmp;
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LPCTSTR szTitleText = "%s Error";
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LPCTSTR szDefaultModule = "TIFFLIB";
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szTmp = (module == NULL) ? (LPTSTR)szDefaultModule : (LPTSTR)module;
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if ((szTitle = (LPTSTR)LocalAlloc(LMEM_FIXED, (lstrlen(szTmp) +
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lstrlen(szTitleText) + lstrlen(fmt) + 128)*sizeof(TCHAR))) == NULL)
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return;
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wsprintf(szTitle, szTitleText, szTmp);
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szTmp = szTitle + (lstrlen(szTitle)+2)*sizeof(TCHAR);
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wvsprintf(szTmp, fmt, ap);
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MessageBox(GetFocus(), szTmp, szTitle, MB_OK | MB_ICONEXCLAMATION);
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LocalFree(szTitle);
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return;
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}
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TIFFErrorHandler _TIFFerrorHandler = Win32ErrorHandler;
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