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Open Source Computer Vision Library
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742 lines
18 KiB
742 lines
18 KiB
/* |
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* Copyright (c) 1988-1997 Sam Leffler |
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* Copyright (c) 1991-1997 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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/* |
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* TIFF Library. |
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*/ |
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#include "tiffiop.h" |
|
|
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/* |
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* Dummy functions to fill the omitted client procedures. |
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*/ |
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static int |
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_tiffDummyMapProc(thandle_t fd, void** pbase, toff_t* psize) |
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{ |
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(void) fd; (void) pbase; (void) psize; |
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return (0); |
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} |
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|
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static void |
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_tiffDummyUnmapProc(thandle_t fd, void* base, toff_t size) |
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{ |
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(void) fd; (void) base; (void) size; |
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} |
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|
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int |
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_TIFFgetMode(const char* mode, const char* module) |
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{ |
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int m = -1; |
|
|
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switch (mode[0]) { |
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case 'r': |
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m = O_RDONLY; |
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if (mode[1] == '+') |
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m = O_RDWR; |
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break; |
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case 'w': |
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case 'a': |
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m = O_RDWR|O_CREAT; |
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if (mode[0] == 'w') |
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m |= O_TRUNC; |
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break; |
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default: |
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TIFFErrorExt(0, module, "\"%s\": Bad mode", mode); |
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break; |
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} |
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return (m); |
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} |
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|
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TIFF* |
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TIFFClientOpen( |
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const char* name, const char* mode, |
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thandle_t clientdata, |
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TIFFReadWriteProc readproc, |
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TIFFReadWriteProc writeproc, |
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TIFFSeekProc seekproc, |
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TIFFCloseProc closeproc, |
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TIFFSizeProc sizeproc, |
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TIFFMapFileProc mapproc, |
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TIFFUnmapFileProc unmapproc |
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) |
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{ |
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static const char module[] = "TIFFClientOpen"; |
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TIFF *tif; |
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int m; |
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const char* cp; |
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|
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/* The following are configuration checks. They should be redundant, but should not |
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* compile to any actual code in an optimised release build anyway. If any of them |
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* fail, (makefile-based or other) configuration is not correct */ |
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assert(sizeof(uint8)==1); |
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assert(sizeof(int8)==1); |
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assert(sizeof(uint16)==2); |
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assert(sizeof(int16)==2); |
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assert(sizeof(uint32)==4); |
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assert(sizeof(int32)==4); |
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assert(sizeof(uint64)==8); |
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assert(sizeof(int64)==8); |
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assert(sizeof(tmsize_t)==sizeof(void*)); |
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{ |
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union{ |
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uint8 a8[2]; |
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uint16 a16; |
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} n; |
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n.a8[0]=1; |
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n.a8[1]=0; |
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(void)n; |
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#ifdef WORDS_BIGENDIAN |
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assert(n.a16==256); |
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#else |
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assert(n.a16==1); |
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#endif |
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} |
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|
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m = _TIFFgetMode(mode, module); |
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if (m == -1) |
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goto bad2; |
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tif = (TIFF *)_TIFFmalloc((tmsize_t)(sizeof (TIFF) + strlen(name) + 1)); |
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if (tif == NULL) { |
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TIFFErrorExt(clientdata, module, "%s: Out of memory (TIFF structure)", name); |
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goto bad2; |
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} |
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_TIFFmemset(tif, 0, sizeof (*tif)); |
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tif->tif_name = (char *)tif + sizeof (TIFF); |
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strcpy(tif->tif_name, name); |
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tif->tif_mode = m &~ (O_CREAT|O_TRUNC); |
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tif->tif_curdir = (uint16) -1; /* non-existent directory */ |
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tif->tif_curoff = 0; |
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tif->tif_curstrip = (uint32) -1; /* invalid strip */ |
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tif->tif_row = (uint32) -1; /* read/write pre-increment */ |
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tif->tif_clientdata = clientdata; |
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if (!readproc || !writeproc || !seekproc || !closeproc || !sizeproc) { |
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TIFFErrorExt(clientdata, module, |
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"One of the client procedures is NULL pointer."); |
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_TIFFfree(tif); |
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goto bad2; |
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} |
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tif->tif_readproc = readproc; |
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tif->tif_writeproc = writeproc; |
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tif->tif_seekproc = seekproc; |
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tif->tif_closeproc = closeproc; |
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tif->tif_sizeproc = sizeproc; |
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if (mapproc) |
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tif->tif_mapproc = mapproc; |
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else |
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tif->tif_mapproc = _tiffDummyMapProc; |
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if (unmapproc) |
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tif->tif_unmapproc = unmapproc; |
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else |
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tif->tif_unmapproc = _tiffDummyUnmapProc; |
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_TIFFSetDefaultCompressionState(tif); /* setup default state */ |
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/* |
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* Default is to return data MSB2LSB and enable the |
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* use of memory-mapped files and strip chopping when |
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* a file is opened read-only. |
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*/ |
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tif->tif_flags = FILLORDER_MSB2LSB; |
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if (m == O_RDONLY ) |
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tif->tif_flags |= TIFF_MAPPED; |
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|
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#ifdef STRIPCHOP_DEFAULT |
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if (m == O_RDONLY || m == O_RDWR) |
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tif->tif_flags |= STRIPCHOP_DEFAULT; |
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#endif |
|
|
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/* |
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* Process library-specific flags in the open mode string. |
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* The following flags may be used to control intrinsic library |
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* behavior that may or may not be desirable (usually for |
|
* compatibility with some application that claims to support |
|
* TIFF but only supports some brain dead idea of what the |
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* vendor thinks TIFF is): |
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* |
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* 'l' use little-endian byte order for creating a file |
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* 'b' use big-endian byte order for creating a file |
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* 'L' read/write information using LSB2MSB bit order |
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* 'B' read/write information using MSB2LSB bit order |
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* 'H' read/write information using host bit order |
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* 'M' enable use of memory-mapped files when supported |
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* 'm' disable use of memory-mapped files |
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* 'C' enable strip chopping support when reading |
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* 'c' disable strip chopping support |
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* 'h' read TIFF header only, do not load the first IFD |
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* '4' ClassicTIFF for creating a file (default) |
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* '8' BigTIFF for creating a file |
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* 'D' enable use of deferred strip/tile offset/bytecount array loading. |
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* 'O' on-demand loading of values instead of whole array loading (implies D) |
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* |
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* The use of the 'l' and 'b' flags is strongly discouraged. |
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* These flags are provided solely because numerous vendors, |
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* typically on the PC, do not correctly support TIFF; they |
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* only support the Intel little-endian byte order. This |
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* support is not configured by default because it supports |
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* the violation of the TIFF spec that says that readers *MUST* |
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* support both byte orders. It is strongly recommended that |
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* you not use this feature except to deal with busted apps |
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* that write invalid TIFF. And even in those cases you should |
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* bang on the vendors to fix their software. |
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* |
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* The 'L', 'B', and 'H' flags are intended for applications |
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* that can optimize operations on data by using a particular |
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* bit order. By default the library returns data in MSB2LSB |
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* bit order for compatibility with older versions of this |
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* library. Returning data in the bit order of the native CPU |
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* makes the most sense but also requires applications to check |
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* the value of the FillOrder tag; something they probably do |
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* not do right now. |
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* |
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* The 'M' and 'm' flags are provided because some virtual memory |
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* systems exhibit poor behavior when large images are mapped. |
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* These options permit clients to control the use of memory-mapped |
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* files on a per-file basis. |
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* |
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* The 'C' and 'c' flags are provided because the library support |
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* for chopping up large strips into multiple smaller strips is not |
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* application-transparent and as such can cause problems. The 'c' |
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* option permits applications that only want to look at the tags, |
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* for example, to get the unadulterated TIFF tag information. |
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*/ |
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for (cp = mode; *cp; cp++) |
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switch (*cp) { |
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case 'b': |
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#ifndef WORDS_BIGENDIAN |
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if (m&O_CREAT) |
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tif->tif_flags |= TIFF_SWAB; |
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#endif |
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break; |
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case 'l': |
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#ifdef WORDS_BIGENDIAN |
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if ((m&O_CREAT)) |
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tif->tif_flags |= TIFF_SWAB; |
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#endif |
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break; |
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case 'B': |
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tif->tif_flags = (tif->tif_flags &~ TIFF_FILLORDER) | |
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FILLORDER_MSB2LSB; |
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break; |
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case 'L': |
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tif->tif_flags = (tif->tif_flags &~ TIFF_FILLORDER) | |
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FILLORDER_LSB2MSB; |
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break; |
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case 'H': |
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tif->tif_flags = (tif->tif_flags &~ TIFF_FILLORDER) | |
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HOST_FILLORDER; |
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break; |
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case 'M': |
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if (m == O_RDONLY) |
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tif->tif_flags |= TIFF_MAPPED; |
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break; |
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case 'm': |
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if (m == O_RDONLY) |
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tif->tif_flags &= ~TIFF_MAPPED; |
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break; |
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case 'C': |
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if (m == O_RDONLY) |
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tif->tif_flags |= TIFF_STRIPCHOP; |
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break; |
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case 'c': |
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if (m == O_RDONLY) |
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tif->tif_flags &= ~TIFF_STRIPCHOP; |
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break; |
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case 'h': |
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tif->tif_flags |= TIFF_HEADERONLY; |
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break; |
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case '8': |
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if (m&O_CREAT) |
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tif->tif_flags |= TIFF_BIGTIFF; |
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break; |
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case 'D': |
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tif->tif_flags |= TIFF_DEFERSTRILELOAD; |
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break; |
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case 'O': |
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if( m == O_RDONLY ) |
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tif->tif_flags |= (TIFF_LAZYSTRILELOAD | TIFF_DEFERSTRILELOAD); |
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break; |
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} |
|
|
|
#ifdef DEFER_STRILE_LOAD |
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/* Compatibility with old DEFER_STRILE_LOAD compilation flag */ |
|
/* Probably unneeded, since to the best of my knowledge (E. Rouault) */ |
|
/* GDAL was the only user of this, and will now use the new 'D' flag */ |
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tif->tif_flags |= TIFF_DEFERSTRILELOAD; |
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#endif |
|
|
|
/* |
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* Read in TIFF header. |
|
*/ |
|
if ((m & O_TRUNC) || |
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!ReadOK(tif, &tif->tif_header, sizeof (TIFFHeaderClassic))) { |
|
if (tif->tif_mode == O_RDONLY) { |
|
TIFFErrorExt(tif->tif_clientdata, name, |
|
"Cannot read TIFF header"); |
|
goto bad; |
|
} |
|
/* |
|
* Setup header and write. |
|
*/ |
|
#ifdef WORDS_BIGENDIAN |
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tif->tif_header.common.tiff_magic = (tif->tif_flags & TIFF_SWAB) |
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? TIFF_LITTLEENDIAN : TIFF_BIGENDIAN; |
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#else |
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tif->tif_header.common.tiff_magic = (tif->tif_flags & TIFF_SWAB) |
|
? TIFF_BIGENDIAN : TIFF_LITTLEENDIAN; |
|
#endif |
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if (!(tif->tif_flags&TIFF_BIGTIFF)) |
|
{ |
|
tif->tif_header.common.tiff_version = TIFF_VERSION_CLASSIC; |
|
tif->tif_header.classic.tiff_diroff = 0; |
|
if (tif->tif_flags & TIFF_SWAB) |
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TIFFSwabShort(&tif->tif_header.common.tiff_version); |
|
tif->tif_header_size = sizeof(TIFFHeaderClassic); |
|
} |
|
else |
|
{ |
|
tif->tif_header.common.tiff_version = TIFF_VERSION_BIG; |
|
tif->tif_header.big.tiff_offsetsize = 8; |
|
tif->tif_header.big.tiff_unused = 0; |
|
tif->tif_header.big.tiff_diroff = 0; |
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if (tif->tif_flags & TIFF_SWAB) |
|
{ |
|
TIFFSwabShort(&tif->tif_header.common.tiff_version); |
|
TIFFSwabShort(&tif->tif_header.big.tiff_offsetsize); |
|
} |
|
tif->tif_header_size = sizeof (TIFFHeaderBig); |
|
} |
|
/* |
|
* The doc for "fopen" for some STD_C_LIBs says that if you |
|
* open a file for modify ("+"), then you must fseek (or |
|
* fflush?) between any freads and fwrites. This is not |
|
* necessary on most systems, but has been shown to be needed |
|
* on Solaris. |
|
*/ |
|
TIFFSeekFile( tif, 0, SEEK_SET ); |
|
if (!WriteOK(tif, &tif->tif_header, (tmsize_t)(tif->tif_header_size))) { |
|
TIFFErrorExt(tif->tif_clientdata, name, |
|
"Error writing TIFF header"); |
|
goto bad; |
|
} |
|
/* |
|
* Setup the byte order handling. |
|
*/ |
|
if (tif->tif_header.common.tiff_magic == TIFF_BIGENDIAN) { |
|
#ifndef WORDS_BIGENDIAN |
|
tif->tif_flags |= TIFF_SWAB; |
|
#endif |
|
} else { |
|
#ifdef WORDS_BIGENDIAN |
|
tif->tif_flags |= TIFF_SWAB; |
|
#endif |
|
} |
|
/* |
|
* Setup default directory. |
|
*/ |
|
if (!TIFFDefaultDirectory(tif)) |
|
goto bad; |
|
tif->tif_diroff = 0; |
|
tif->tif_dirlist = NULL; |
|
tif->tif_dirlistsize = 0; |
|
tif->tif_dirnumber = 0; |
|
return (tif); |
|
} |
|
/* |
|
* Setup the byte order handling. |
|
*/ |
|
if (tif->tif_header.common.tiff_magic != TIFF_BIGENDIAN && |
|
tif->tif_header.common.tiff_magic != TIFF_LITTLEENDIAN |
|
#if MDI_SUPPORT |
|
&& |
|
#if HOST_BIGENDIAN |
|
tif->tif_header.common.tiff_magic != MDI_BIGENDIAN |
|
#else |
|
tif->tif_header.common.tiff_magic != MDI_LITTLEENDIAN |
|
#endif |
|
) { |
|
TIFFErrorExt(tif->tif_clientdata, name, |
|
"Not a TIFF or MDI file, bad magic number %d (0x%x)", |
|
#else |
|
) { |
|
TIFFErrorExt(tif->tif_clientdata, name, |
|
"Not a TIFF file, bad magic number %d (0x%x)", |
|
#endif |
|
tif->tif_header.common.tiff_magic, |
|
tif->tif_header.common.tiff_magic); |
|
goto bad; |
|
} |
|
if (tif->tif_header.common.tiff_magic == TIFF_BIGENDIAN) { |
|
#ifndef WORDS_BIGENDIAN |
|
tif->tif_flags |= TIFF_SWAB; |
|
#endif |
|
} else { |
|
#ifdef WORDS_BIGENDIAN |
|
tif->tif_flags |= TIFF_SWAB; |
|
#endif |
|
} |
|
if (tif->tif_flags & TIFF_SWAB) |
|
TIFFSwabShort(&tif->tif_header.common.tiff_version); |
|
if ((tif->tif_header.common.tiff_version != TIFF_VERSION_CLASSIC)&& |
|
(tif->tif_header.common.tiff_version != TIFF_VERSION_BIG)) { |
|
TIFFErrorExt(tif->tif_clientdata, name, |
|
"Not a TIFF file, bad version number %d (0x%x)", |
|
tif->tif_header.common.tiff_version, |
|
tif->tif_header.common.tiff_version); |
|
goto bad; |
|
} |
|
if (tif->tif_header.common.tiff_version == TIFF_VERSION_CLASSIC) |
|
{ |
|
if (tif->tif_flags & TIFF_SWAB) |
|
TIFFSwabLong(&tif->tif_header.classic.tiff_diroff); |
|
tif->tif_header_size = sizeof(TIFFHeaderClassic); |
|
} |
|
else |
|
{ |
|
if (!ReadOK(tif, ((uint8*)(&tif->tif_header) + sizeof(TIFFHeaderClassic)), (sizeof(TIFFHeaderBig)-sizeof(TIFFHeaderClassic)))) |
|
{ |
|
TIFFErrorExt(tif->tif_clientdata, name, |
|
"Cannot read TIFF header"); |
|
goto bad; |
|
} |
|
if (tif->tif_flags & TIFF_SWAB) |
|
{ |
|
TIFFSwabShort(&tif->tif_header.big.tiff_offsetsize); |
|
TIFFSwabLong8(&tif->tif_header.big.tiff_diroff); |
|
} |
|
if (tif->tif_header.big.tiff_offsetsize != 8) |
|
{ |
|
TIFFErrorExt(tif->tif_clientdata, name, |
|
"Not a TIFF file, bad BigTIFF offsetsize %d (0x%x)", |
|
tif->tif_header.big.tiff_offsetsize, |
|
tif->tif_header.big.tiff_offsetsize); |
|
goto bad; |
|
} |
|
if (tif->tif_header.big.tiff_unused != 0) |
|
{ |
|
TIFFErrorExt(tif->tif_clientdata, name, |
|
"Not a TIFF file, bad BigTIFF unused %d (0x%x)", |
|
tif->tif_header.big.tiff_unused, |
|
tif->tif_header.big.tiff_unused); |
|
goto bad; |
|
} |
|
tif->tif_header_size = sizeof(TIFFHeaderBig); |
|
tif->tif_flags |= TIFF_BIGTIFF; |
|
} |
|
tif->tif_flags |= TIFF_MYBUFFER; |
|
tif->tif_rawcp = tif->tif_rawdata = 0; |
|
tif->tif_rawdatasize = 0; |
|
tif->tif_rawdataoff = 0; |
|
tif->tif_rawdataloaded = 0; |
|
|
|
switch (mode[0]) { |
|
case 'r': |
|
if (!(tif->tif_flags&TIFF_BIGTIFF)) |
|
tif->tif_nextdiroff = tif->tif_header.classic.tiff_diroff; |
|
else |
|
tif->tif_nextdiroff = tif->tif_header.big.tiff_diroff; |
|
/* |
|
* Try to use a memory-mapped file if the client |
|
* has not explicitly suppressed usage with the |
|
* 'm' flag in the open mode (see above). |
|
*/ |
|
if (tif->tif_flags & TIFF_MAPPED) |
|
{ |
|
toff_t n; |
|
if (TIFFMapFileContents(tif,(void**)(&tif->tif_base),&n)) |
|
{ |
|
tif->tif_size=(tmsize_t)n; |
|
assert((toff_t)tif->tif_size==n); |
|
} |
|
else |
|
tif->tif_flags &= ~TIFF_MAPPED; |
|
} |
|
/* |
|
* Sometimes we do not want to read the first directory (for example, |
|
* it may be broken) and want to proceed to other directories. I this |
|
* case we use the TIFF_HEADERONLY flag to open file and return |
|
* immediately after reading TIFF header. |
|
*/ |
|
if (tif->tif_flags & TIFF_HEADERONLY) |
|
return (tif); |
|
|
|
/* |
|
* Setup initial directory. |
|
*/ |
|
if (TIFFReadDirectory(tif)) { |
|
tif->tif_rawcc = (tmsize_t)-1; |
|
tif->tif_flags |= TIFF_BUFFERSETUP; |
|
return (tif); |
|
} |
|
break; |
|
case 'a': |
|
/* |
|
* New directories are automatically append |
|
* to the end of the directory chain when they |
|
* are written out (see TIFFWriteDirectory). |
|
*/ |
|
if (!TIFFDefaultDirectory(tif)) |
|
goto bad; |
|
return (tif); |
|
} |
|
bad: |
|
tif->tif_mode = O_RDONLY; /* XXX avoid flush */ |
|
TIFFCleanup(tif); |
|
bad2: |
|
return ((TIFF*)0); |
|
} |
|
|
|
/* |
|
* Query functions to access private data. |
|
*/ |
|
|
|
/* |
|
* Return open file's name. |
|
*/ |
|
const char * |
|
TIFFFileName(TIFF* tif) |
|
{ |
|
return (tif->tif_name); |
|
} |
|
|
|
/* |
|
* Set the file name. |
|
*/ |
|
const char * |
|
TIFFSetFileName(TIFF* tif, const char *name) |
|
{ |
|
const char* old_name = tif->tif_name; |
|
tif->tif_name = (char *)name; |
|
return (old_name); |
|
} |
|
|
|
/* |
|
* Return open file's I/O descriptor. |
|
*/ |
|
int |
|
TIFFFileno(TIFF* tif) |
|
{ |
|
return (tif->tif_fd); |
|
} |
|
|
|
/* |
|
* Set open file's I/O descriptor, and return previous value. |
|
*/ |
|
int |
|
TIFFSetFileno(TIFF* tif, int fd) |
|
{ |
|
int old_fd = tif->tif_fd; |
|
tif->tif_fd = fd; |
|
return old_fd; |
|
} |
|
|
|
/* |
|
* Return open file's clientdata. |
|
*/ |
|
thandle_t |
|
TIFFClientdata(TIFF* tif) |
|
{ |
|
return (tif->tif_clientdata); |
|
} |
|
|
|
/* |
|
* Set open file's clientdata, and return previous value. |
|
*/ |
|
thandle_t |
|
TIFFSetClientdata(TIFF* tif, thandle_t newvalue) |
|
{ |
|
thandle_t m = tif->tif_clientdata; |
|
tif->tif_clientdata = newvalue; |
|
return m; |
|
} |
|
|
|
/* |
|
* Return read/write mode. |
|
*/ |
|
int |
|
TIFFGetMode(TIFF* tif) |
|
{ |
|
return (tif->tif_mode); |
|
} |
|
|
|
/* |
|
* Return read/write mode. |
|
*/ |
|
int |
|
TIFFSetMode(TIFF* tif, int mode) |
|
{ |
|
int old_mode = tif->tif_mode; |
|
tif->tif_mode = mode; |
|
return (old_mode); |
|
} |
|
|
|
/* |
|
* Return nonzero if file is organized in |
|
* tiles; zero if organized as strips. |
|
*/ |
|
int |
|
TIFFIsTiled(TIFF* tif) |
|
{ |
|
return (isTiled(tif)); |
|
} |
|
|
|
/* |
|
* Return current row being read/written. |
|
*/ |
|
uint32 |
|
TIFFCurrentRow(TIFF* tif) |
|
{ |
|
return (tif->tif_row); |
|
} |
|
|
|
/* |
|
* Return index of the current directory. |
|
*/ |
|
uint16 |
|
TIFFCurrentDirectory(TIFF* tif) |
|
{ |
|
return (tif->tif_curdir); |
|
} |
|
|
|
/* |
|
* Return current strip. |
|
*/ |
|
uint32 |
|
TIFFCurrentStrip(TIFF* tif) |
|
{ |
|
return (tif->tif_curstrip); |
|
} |
|
|
|
/* |
|
* Return current tile. |
|
*/ |
|
uint32 |
|
TIFFCurrentTile(TIFF* tif) |
|
{ |
|
return (tif->tif_curtile); |
|
} |
|
|
|
/* |
|
* Return nonzero if the file has byte-swapped data. |
|
*/ |
|
int |
|
TIFFIsByteSwapped(TIFF* tif) |
|
{ |
|
return ((tif->tif_flags & TIFF_SWAB) != 0); |
|
} |
|
|
|
/* |
|
* Return nonzero if the data is returned up-sampled. |
|
*/ |
|
int |
|
TIFFIsUpSampled(TIFF* tif) |
|
{ |
|
return (isUpSampled(tif)); |
|
} |
|
|
|
/* |
|
* Return nonzero if the data is returned in MSB-to-LSB bit order. |
|
*/ |
|
int |
|
TIFFIsMSB2LSB(TIFF* tif) |
|
{ |
|
return (isFillOrder(tif, FILLORDER_MSB2LSB)); |
|
} |
|
|
|
/* |
|
* Return nonzero if given file was written in big-endian order. |
|
*/ |
|
int |
|
TIFFIsBigEndian(TIFF* tif) |
|
{ |
|
return (tif->tif_header.common.tiff_magic == TIFF_BIGENDIAN); |
|
} |
|
|
|
/* |
|
* Return pointer to file read method. |
|
*/ |
|
TIFFReadWriteProc |
|
TIFFGetReadProc(TIFF* tif) |
|
{ |
|
return (tif->tif_readproc); |
|
} |
|
|
|
/* |
|
* Return pointer to file write method. |
|
*/ |
|
TIFFReadWriteProc |
|
TIFFGetWriteProc(TIFF* tif) |
|
{ |
|
return (tif->tif_writeproc); |
|
} |
|
|
|
/* |
|
* Return pointer to file seek method. |
|
*/ |
|
TIFFSeekProc |
|
TIFFGetSeekProc(TIFF* tif) |
|
{ |
|
return (tif->tif_seekproc); |
|
} |
|
|
|
/* |
|
* Return pointer to file close method. |
|
*/ |
|
TIFFCloseProc |
|
TIFFGetCloseProc(TIFF* tif) |
|
{ |
|
return (tif->tif_closeproc); |
|
} |
|
|
|
/* |
|
* Return pointer to file size requesting method. |
|
*/ |
|
TIFFSizeProc |
|
TIFFGetSizeProc(TIFF* tif) |
|
{ |
|
return (tif->tif_sizeproc); |
|
} |
|
|
|
/* |
|
* Return pointer to memory mapping method. |
|
*/ |
|
TIFFMapFileProc |
|
TIFFGetMapFileProc(TIFF* tif) |
|
{ |
|
return (tif->tif_mapproc); |
|
} |
|
|
|
/* |
|
* Return pointer to memory unmapping method. |
|
*/ |
|
TIFFUnmapFileProc |
|
TIFFGetUnmapFileProc(TIFF* tif) |
|
{ |
|
return (tif->tif_unmapproc); |
|
} |
|
|
|
/* vim: set ts=8 sts=8 sw=8 noet: */ |
|
/* |
|
* Local Variables: |
|
* mode: c |
|
* c-basic-offset: 8 |
|
* fill-column: 78 |
|
* End: |
|
*/
|
|
|