Upgrading libtiff: Adding clean copy of libtiff 4.0.3

This commit removes the previous version of the bundled libtiff
(3.9.2), as well as all local modifications to it. It adds an
unmodified copy of the official libtiff source distribution, except
that various extraneous files have been removed, as usual.

The patches required to build it in Qt will follow in separate
commit(s).

Task-number: QTBUG-25409
Change-Id: If47e02c25ce1a2b3b47eff94a875e2abea0c7e1c
Reviewed-by: aavit <eirik.aavitsland@digia.com>

1 files changed, 270 insertions, 233 deletions

diff --git a/src/3rdparty/libtiff/libtiff/tif_open.c b/src/3rdparty/libtiff/libtiff/tif_open.c
index a567056..8c88328 100644
--- a/src/3rdparty/libtiff/libtiff/tif_open.c
+++ b/src/3rdparty/libtiff/libtiff/tif_open.c
@@ -1,4 +1,4 @@
-/* $Id: tif_open.c,v 1.33 2006/06/08 14:27:17 dron Exp $ */
+/* $Id: tif_open.c,v 1.46 2010-12-06 16:54:54 faxguy Exp $ */
 
 /*
  * Copyright (c) 1988-1997 Sam Leffler
@@ -29,90 +29,22 @@
  */
 #include "tiffiop.h"
 
-static const long typemask[13] = {
-	(long)0L,		/* TIFF_NOTYPE */
-	(long)0x000000ffL,	/* TIFF_BYTE */
-	(long)0xffffffffL,	/* TIFF_ASCII */
-	(long)0x0000ffffL,	/* TIFF_SHORT */
-	(long)0xffffffffL,	/* TIFF_LONG */
-	(long)0xffffffffL,	/* TIFF_RATIONAL */
-	(long)0x000000ffL,	/* TIFF_SBYTE */
-	(long)0x000000ffL,	/* TIFF_UNDEFINED */
-	(long)0x0000ffffL,	/* TIFF_SSHORT */
-	(long)0xffffffffL,	/* TIFF_SLONG */
-	(long)0xffffffffL,	/* TIFF_SRATIONAL */
-	(long)0xffffffffL,	/* TIFF_FLOAT */
-	(long)0xffffffffL,	/* TIFF_DOUBLE */
-};
-static const int bigTypeshift[13] = {
-	0,		/* TIFF_NOTYPE */
-	24,		/* TIFF_BYTE */
-	0,		/* TIFF_ASCII */
-	16,		/* TIFF_SHORT */
-	0,		/* TIFF_LONG */
-	0,		/* TIFF_RATIONAL */
-	24,		/* TIFF_SBYTE */
-	24,		/* TIFF_UNDEFINED */
-	16,		/* TIFF_SSHORT */
-	0,		/* TIFF_SLONG */
-	0,		/* TIFF_SRATIONAL */
-	0,		/* TIFF_FLOAT */
-	0,		/* TIFF_DOUBLE */
-};
-static const int litTypeshift[13] = {
-	0,		/* TIFF_NOTYPE */
-	0,		/* TIFF_BYTE */
-	0,		/* TIFF_ASCII */
-	0,		/* TIFF_SHORT */
-	0,		/* TIFF_LONG */
-	0,		/* TIFF_RATIONAL */
-	0,		/* TIFF_SBYTE */
-	0,		/* TIFF_UNDEFINED */
-	0,		/* TIFF_SSHORT */
-	0,		/* TIFF_SLONG */
-	0,		/* TIFF_SRATIONAL */
-	0,		/* TIFF_FLOAT */
-	0,		/* TIFF_DOUBLE */
-};
-
 /*
  * Dummy functions to fill the omitted client procedures.
  */
 static int
-_tiffDummyMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
+_tiffDummyMapProc(thandle_t fd, void** pbase, toff_t* psize)
 {
 	(void) fd; (void) pbase; (void) psize;
 	return (0);
 }
 
 static void
-_tiffDummyUnmapProc(thandle_t fd, tdata_t base, toff_t size)
+_tiffDummyUnmapProc(thandle_t fd, void* base, toff_t size)
 {
 	(void) fd; (void) base; (void) size;
 }
 
-/*
- * Initialize the shift & mask tables, and the
- * byte swapping state according to the file
- * contents and the machine architecture.
- */
-static void
-TIFFInitOrder(TIFF* tif, int magic)
-{
-	tif->tif_typemask = typemask;
-	if (magic == TIFF_BIGENDIAN) {
-		tif->tif_typeshift = bigTypeshift;
-#ifndef WORDS_BIGENDIAN
-		tif->tif_flags |= TIFF_SWAB;
-#endif
-	} else {
-		tif->tif_typeshift = litTypeshift;
-#ifdef WORDS_BIGENDIAN
-		tif->tif_flags |= TIFF_SWAB;
-#endif
-	}
-}
-
 int
 _TIFFgetMode(const char* mode, const char* module)
 {
@@ -155,10 +87,36 @@ TIFFClientOpen(
 	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(sizeof (TIFF) + strlen(name) + 1);
+	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;
@@ -167,14 +125,14 @@ TIFFClientOpen(
 	tif->tif_name = (char *)tif + sizeof (TIFF);
 	strcpy(tif->tif_name, name);
 	tif->tif_mode = m &~ (O_CREAT|O_TRUNC);
-	tif->tif_curdir = (tdir_t) -1;		/* non-existent directory */
+	tif->tif_curdir = (uint16) -1;		/* non-existent directory */
 	tif->tif_curoff = 0;
-	tif->tif_curstrip = (tstrip_t) -1;	/* invalid strip */
+	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.");
+		    "One of the client procedures is NULL pointer.");
 		goto bad2;
 	}
 	tif->tif_readproc = readproc;
@@ -182,7 +140,7 @@ TIFFClientOpen(
 	tif->tif_seekproc = seekproc;
 	tif->tif_closeproc = closeproc;
 	tif->tif_sizeproc = sizeproc;
-        if (mapproc)
+	if (mapproc)
 		tif->tif_mapproc = mapproc;
 	else
 		tif->tif_mapproc = _tiffDummyMapProc;
@@ -190,7 +148,7 @@ TIFFClientOpen(
 		tif->tif_unmapproc = unmapproc;
 	else
 		tif->tif_unmapproc = _tiffDummyUnmapProc;
-	_TIFFSetDefaultCompressionState(tif);	/* setup default state */
+	_TIFFSetDefaultCompressionState(tif);    /* setup default state */
 	/*
 	 * Default is to return data MSB2LSB and enable the
 	 * use of memory-mapped files and strip chopping when
@@ -200,10 +158,10 @@ TIFFClientOpen(
 	if (m == O_RDONLY )
 		tif->tif_flags |= TIFF_MAPPED;
 
-#ifdef STRIPCHOP_DEFAULT
+	#ifdef STRIPCHOP_DEFAULT
 	if (m == O_RDONLY || m == O_RDWR)
 		tif->tif_flags |= STRIPCHOP_DEFAULT;
-#endif
+	#endif
 
 	/*
 	 * Process library-specific flags in the open mode string.
@@ -213,16 +171,18 @@ TIFFClientOpen(
 	 * 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
+	 * '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,
@@ -257,94 +217,120 @@ TIFFClientOpen(
 	 */
 	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 '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 (tif->tif_mode & O_TRUNC ||
-	    !ReadOK(tif, &tif->tif_header, sizeof (TIFFHeader))) {
+	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");
+			    "Cannot read TIFF header");
 			goto bad;
 		}
 		/*
 		 * Setup header and write.
 		 */
-#ifdef WORDS_BIGENDIAN
-		tif->tif_header.tiff_magic = tif->tif_flags & TIFF_SWAB
+		#ifdef WORDS_BIGENDIAN
+		tif->tif_header.common.tiff_magic = tif->tif_flags & TIFF_SWAB
 		    ? TIFF_LITTLEENDIAN : TIFF_BIGENDIAN;
-#else
-		tif->tif_header.tiff_magic = tif->tif_flags & TIFF_SWAB
+		#else
+		tif->tif_header.common.tiff_magic = tif->tif_flags & TIFF_SWAB
 		    ? TIFF_BIGENDIAN : TIFF_LITTLEENDIAN;
-#endif
-		tif->tif_header.tiff_version = TIFF_VERSION;
-		if (tif->tif_flags & TIFF_SWAB)
-			TIFFSwabShort(&tif->tif_header.tiff_version);
-		tif->tif_header.tiff_diroff = 0;	/* filled in later */
-
-
-                /*
-                 * 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, sizeof (TIFFHeader))) {
+		#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");
+			    "Error writing TIFF header");
 			goto bad;
 		}
 		/*
 		 * Setup the byte order handling.
 		 */
-		TIFFInitOrder(tif, tif->tif_header.tiff_magic);
+		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.
 		 */
@@ -359,95 +345,139 @@ TIFFClientOpen(
 	/*
 	 * Setup the byte order handling.
 	 */
-	if (tif->tif_header.tiff_magic != TIFF_BIGENDIAN &&
-	    tif->tif_header.tiff_magic != TIFF_LITTLEENDIAN
-#if MDI_SUPPORT
+	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.tiff_magic != MDI_BIGENDIAN
-#else
-	    tif->tif_header.tiff_magic != MDI_LITTLEENDIAN
-#endif
+	    #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
+		    "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.tiff_magic,
-		    tif->tif_header.tiff_magic);
+		    "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;
 	}
-	TIFFInitOrder(tif, tif->tif_header.tiff_magic);
-	/*
-	 * Swap header if required.
-	 */
-	if (tif->tif_flags & TIFF_SWAB) {
-		TIFFSwabShort(&tif->tif_header.tiff_version);
-		TIFFSwabLong(&tif->tif_header.tiff_diroff);
-	}
-	/*
-	 * Now check version (if needed, it's been byte-swapped).
-	 * Note that this isn't actually a version number, it's a
-	 * magic number that doesn't change (stupid).
-	 */
-	if (tif->tif_header.tiff_version == TIFF_BIGTIFF_VERSION) {
-		TIFFErrorExt(tif->tif_clientdata, name,
-                          "This is a BigTIFF file.  This format not supported\n"
-                          "by this version of libtiff." );
-		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_header.tiff_version != TIFF_VERSION) {
+	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.tiff_version,
-		    tif->tif_header.tiff_version);
+		    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;
 
-	/*
-	 * 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.
-	 */
 	switch (mode[0]) {
-	case 'r':
-		tif->tif_nextdiroff = tif->tif_header.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) &&
-	!TIFFMapFileContents(tif, (tdata_t*) &tif->tif_base, &tif->tif_size))
-			tif->tif_flags &= ~TIFF_MAPPED;
-		if (TIFFReadDirectory(tif)) {
-			tif->tif_rawcc = -1;
-			tif->tif_flags |= TIFF_BUFFERSETUP;
+		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);
-		}
-		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 */
@@ -562,7 +592,7 @@ TIFFCurrentRow(TIFF* tif)
 /*
  * Return index of the current directory.
  */
-tdir_t
+uint16
 TIFFCurrentDirectory(TIFF* tif)
 {
 	return (tif->tif_curdir);
@@ -571,7 +601,7 @@ TIFFCurrentDirectory(TIFF* tif)
 /*
  * Return current strip.
  */
-tstrip_t
+uint32
 TIFFCurrentStrip(TIFF* tif)
 {
 	return (tif->tif_curstrip);
@@ -580,7 +610,7 @@ TIFFCurrentStrip(TIFF* tif)
 /*
  * Return current tile.
  */
-ttile_t
+uint32
 TIFFCurrentTile(TIFF* tif)
 {
 	return (tif->tif_curtile);
@@ -619,7 +649,7 @@ TIFFIsMSB2LSB(TIFF* tif)
 int
 TIFFIsBigEndian(TIFF* tif)
 {
-	return (tif->tif_header.tiff_magic == TIFF_BIGENDIAN);
+	return (tif->tif_header.common.tiff_magic == TIFF_BIGENDIAN);
 }
 
 /*
@@ -686,3 +716,10 @@ TIFFGetUnmapFileProc(TIFF* tif)
 }
 
 /* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */