diff options
Diffstat (limited to 'src/3rdparty/libtiff/libtiff/tif_open.c')
| -rw-r--r-- | src/3rdparty/libtiff/libtiff/tif_open.c | 503 |
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 a567056ce7..8c88328cf2 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: + */ |