XFA: Upgrade to libtiff 4.0.6.

R=jun_fang@foxitsoftware.com, tsepez@chromium.org

Review URL: https://codereview.chromium.org/1563103002 .

1 files changed, 725 insertions, 0 deletions

diff --git a/third_party/libtiff/tif_open.c b/third_party/libtiff/tif_open.c
new file mode 100644
index 0000000000..8c88328cf2
--- /dev/null
+++ b/third_party/libtiff/tif_open.c
@@ -0,0 +1,725 @@
+/* $Id: tif_open.c,v 1.46 2010-12-06 16:54:54 faxguy 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.
+ */
+#include "tiffiop.h"
+
+/*
+ * Dummy functions to fill the omitted client procedures.
+ */
+static int
+_tiffDummyMapProc(thandle_t fd, void** pbase, toff_t* psize)
+{
+	(void) fd; (void) pbase; (void) psize;
+	return (0);
+}
+
+static void
+_tiffDummyUnmapProc(thandle_t fd, void* base, toff_t size)
+{
+	(void) fd; (void) base; (void) size;
+}
+
+int
+_TIFFgetMode(const char* mode, const char* module)
+{
+	int m = -1;
+
+	switch (mode[0]) {
+	case 'r':
+		m = O_RDONLY;
+		if (mode[1] == '+')
+			m = O_RDWR;
+		break;
+	case 'w':
+	case 'a':
+		m = O_RDWR|O_CREAT;
+		if (mode[0] == 'w')
+			m |= O_TRUNC;
+		break;
+	default:
+		TIFFErrorExt(0, module, "\"%s\": Bad mode", mode);
+		break;
+	}
+	return (m);
+}
+
+TIFF*
+TIFFClientOpen(
+	const char* name, const char* mode,
+	thandle_t clientdata,
+	TIFFReadWriteProc readproc,
+	TIFFReadWriteProc writeproc,
+	TIFFSeekProc seekproc,
+	TIFFCloseProc closeproc,
+	TIFFSizeProc sizeproc,
+	TIFFMapFileProc mapproc,
+	TIFFUnmapFileProc unmapproc
+)
+{
+	static const char module[] = "TIFFClientOpen";
+	TIFF *tif;
+	int m;
+	const char* cp;
+
+	/* The following are configuration checks. They should be redundant, but should not
+	 * compile to any actual code in an optimised release build anyway. If any of them
+	 * fail, (makefile-based or other) configuration is not correct */
+	assert(sizeof(uint8)==1);
+	assert(sizeof(int8)==1);
+	assert(sizeof(uint16)==2);
+	assert(sizeof(int16)==2);
+	assert(sizeof(uint32)==4);
+	assert(sizeof(int32)==4);
+	assert(sizeof(uint64)==8);
+	assert(sizeof(int64)==8);
+	assert(sizeof(tmsize_t)==sizeof(void*));
+	{
+		union{
+			uint8 a8[2];
+			uint16 a16;
+		} n;
+		n.a8[0]=1;
+		n.a8[1]=0;
+		#ifdef WORDS_BIGENDIAN
+		assert(n.a16==256);
+		#else
+		assert(n.a16==1);
+		#endif
+	}
+
+	m = _TIFFgetMode(mode, module);
+	if (m == -1)
+		goto bad2;
+	tif = (TIFF *)_TIFFmalloc((tmsize_t)(sizeof (TIFF) + strlen(name) + 1));
+	if (tif == NULL) {
+		TIFFErrorExt(clientdata, module, "%s: Out of memory (TIFF structure)", name);
+		goto bad2;
+	}
+	_TIFFmemset(tif, 0, sizeof (*tif));
+	tif->tif_name = (char *)tif + sizeof (TIFF);
+	strcpy(tif->tif_name, name);
+	tif->tif_mode = m &~ (O_CREAT|O_TRUNC);
+	tif->tif_curdir = (uint16) -1;		/* non-existent directory */
+	tif->tif_curoff = 0;
+	tif->tif_curstrip = (uint32) -1;	/* invalid strip */
+	tif->tif_row = (uint32) -1;		/* read/write pre-increment */
+	tif->tif_clientdata = clientdata;
+	if (!readproc || !writeproc || !seekproc || !closeproc || !sizeproc) {
+		TIFFErrorExt(clientdata, module,
+		    "One of the client procedures is NULL pointer.");
+		goto bad2;
+	}
+	tif->tif_readproc = readproc;
+	tif->tif_writeproc = writeproc;
+	tif->tif_seekproc = seekproc;
+	tif->tif_closeproc = closeproc;
+	tif->tif_sizeproc = sizeproc;
+	if (mapproc)
+		tif->tif_mapproc = mapproc;
+	else
+		tif->tif_mapproc = _tiffDummyMapProc;
+	if (unmapproc)
+		tif->tif_unmapproc = unmapproc;
+	else
+		tif->tif_unmapproc = _tiffDummyUnmapProc;
+	_TIFFSetDefaultCompressionState(tif);    /* setup default state */
+	/*
+	 * Default is to return data MSB2LSB and enable the
+	 * use of memory-mapped files and strip chopping when
+	 * a file is opened read-only.
+	 */
+	tif->tif_flags = FILLORDER_MSB2LSB;
+	if (m == O_RDONLY )
+		tif->tif_flags |= TIFF_MAPPED;
+
+	#ifdef STRIPCHOP_DEFAULT
+	if (m == O_RDONLY || m == O_RDWR)
+		tif->tif_flags |= STRIPCHOP_DEFAULT;
+	#endif
+
+	/*
+	 * Process library-specific flags in the open mode string.
+	 * The following flags may be used to control intrinsic library
+	 * behaviour that may or may not be desirable (usually for
+	 * compatibility with some application that claims to support
+	 * TIFF but only supports some braindead idea of what the
+	 * vendor thinks TIFF is):
+	 *
+	 * 'l' use little-endian byte order for creating a file
+	 * 'b' use big-endian byte order for creating a file
+	 * 'L' read/write information using LSB2MSB bit order
+	 * 'B' read/write information using MSB2LSB bit order
+	 * 'H' read/write information using host bit order
+	 * 'M' enable use of memory-mapped files when supported
+	 * 'm' disable use of memory-mapped files
+	 * 'C' enable strip chopping support when reading
+	 * 'c' disable strip chopping support
+	 * 'h' read TIFF header only, do not load the first IFD
+	 * '4' ClassicTIFF for creating a file (default)
+	 * '8' BigTIFF for creating a file
+	 *
+	 * The use of the 'l' and 'b' flags is strongly discouraged.
+	 * These flags are provided solely because numerous vendors,
+	 * typically on the PC, do not correctly support TIFF; they
+	 * only support the Intel little-endian byte order.  This
+	 * support is not configured by default because it supports
+	 * the violation of the TIFF spec that says that readers *MUST*
+	 * support both byte orders.  It is strongly recommended that
+	 * you not use this feature except to deal with busted apps
+	 * that write invalid TIFF.  And even in those cases you should
+	 * bang on the vendors to fix their software.
+	 *
+	 * The 'L', 'B', and 'H' flags are intended for applications
+	 * that can optimize operations on data by using a particular
+	 * bit order.  By default the library returns data in MSB2LSB
+	 * bit order for compatibiltiy with older versions of this
+	 * library.  Returning data in the bit order of the native cpu
+	 * makes the most sense but also requires applications to check
+	 * the value of the FillOrder tag; something they probably do
+	 * not do right now.
+	 *
+	 * The 'M' and 'm' flags are provided because some virtual memory
+	 * systems exhibit poor behaviour when large images are mapped.
+	 * These options permit clients to control the use of memory-mapped
+	 * files on a per-file basis.
+	 *
+	 * The 'C' and 'c' flags are provided because the library support
+	 * for chopping up large strips into multiple smaller strips is not
+	 * application-transparent and as such can cause problems.  The 'c'
+	 * option permits applications that only want to look at the tags,
+	 * for example, to get the unadulterated TIFF tag information.
+	 */
+	for (cp = mode; *cp; cp++)
+		switch (*cp) {
+			case 'b':
+				#ifndef WORDS_BIGENDIAN
+				if (m&O_CREAT)
+					tif->tif_flags |= TIFF_SWAB;
+				#endif
+				break;
+			case 'l':
+				#ifdef WORDS_BIGENDIAN
+				if ((m&O_CREAT))
+					tif->tif_flags |= TIFF_SWAB;
+				#endif
+				break;
+			case 'B':
+				tif->tif_flags = (tif->tif_flags &~ TIFF_FILLORDER) |
+				    FILLORDER_MSB2LSB;
+				break;
+			case 'L':
+				tif->tif_flags = (tif->tif_flags &~ TIFF_FILLORDER) |
+				    FILLORDER_LSB2MSB;
+				break;
+			case 'H':
+				tif->tif_flags = (tif->tif_flags &~ TIFF_FILLORDER) |
+				    HOST_FILLORDER;
+				break;
+			case 'M':
+				if (m == O_RDONLY)
+					tif->tif_flags |= TIFF_MAPPED;
+				break;
+			case 'm':
+				if (m == O_RDONLY)
+					tif->tif_flags &= ~TIFF_MAPPED;
+				break;
+			case 'C':
+				if (m == O_RDONLY)
+					tif->tif_flags |= TIFF_STRIPCHOP;
+				break;
+			case 'c':
+				if (m == O_RDONLY)
+					tif->tif_flags &= ~TIFF_STRIPCHOP;
+				break;
+			case 'h':
+				tif->tif_flags |= TIFF_HEADERONLY;
+				break;
+			case '8':
+				if (m&O_CREAT)
+					tif->tif_flags |= TIFF_BIGTIFF;
+				break;
+		}
+	/*
+	 * Read in TIFF header.
+	 */
+	if ((m & O_TRUNC) ||
+	    !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
+		tif->tif_header.common.tiff_magic = tif->tif_flags & TIFF_SWAB
+		    ? TIFF_LITTLEENDIAN : TIFF_BIGENDIAN;
+		#else
+		tif->tif_header.common.tiff_magic = tif->tif_flags & TIFF_SWAB
+		    ? TIFF_BIGENDIAN : TIFF_LITTLEENDIAN;
+		#endif
+		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)
+				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;
+			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:
+ */