/* $Id: tif_dirinfo.c,v 1.1 2005-06-17 13:54:52 vp153 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. * * Core Directory Tag Support. */ #include "tiffiop.h" #include #include /* * NB: NB: THIS ARRAY IS ASSUMED TO BE SORTED BY TAG. * If a tag can have both LONG and SHORT types * then the LONG must be placed before the SHORT for * writing to work properly. * * NOTE: The second field (field_readcount) and third field (field_writecount) * sometimes use the values TIFF_VARIABLE (-1), TIFF_VARIABLE2 (-3) * and TIFFTAG_SPP (-2). The macros should be used but would throw off * the formatting of the code, so please interprete the -1, -2 and -3 * values accordingly. */ #ifndef VMS static #endif const TIFFFieldInfo tiffFieldInfo[] = { { TIFFTAG_SUBFILETYPE, 1, 1, TIFF_LONG, FIELD_SUBFILETYPE, TRUE, FALSE, "SubfileType" }, /* XXX SHORT for compatibility w/ old versions of the library */ { TIFFTAG_SUBFILETYPE, 1, 1, TIFF_SHORT, FIELD_SUBFILETYPE, TRUE, FALSE, "SubfileType" }, { TIFFTAG_OSUBFILETYPE, 1, 1, TIFF_SHORT, FIELD_SUBFILETYPE, TRUE, FALSE, "OldSubfileType" }, { TIFFTAG_IMAGEWIDTH, 1, 1, TIFF_LONG, FIELD_IMAGEDIMENSIONS, FALSE, FALSE, "ImageWidth" }, { TIFFTAG_IMAGEWIDTH, 1, 1, TIFF_SHORT, FIELD_IMAGEDIMENSIONS, FALSE, FALSE, "ImageWidth" }, { TIFFTAG_IMAGELENGTH, 1, 1, TIFF_LONG, FIELD_IMAGEDIMENSIONS, TRUE, FALSE, "ImageLength" }, { TIFFTAG_IMAGELENGTH, 1, 1, TIFF_SHORT, FIELD_IMAGEDIMENSIONS, TRUE, FALSE, "ImageLength" }, { TIFFTAG_BITSPERSAMPLE, -1,-1, TIFF_SHORT, FIELD_BITSPERSAMPLE, FALSE, FALSE, "BitsPerSample" }, /* XXX LONG for compatibility with some broken TIFF writers */ { TIFFTAG_BITSPERSAMPLE, -1,-1, TIFF_LONG, FIELD_BITSPERSAMPLE, FALSE, FALSE, "BitsPerSample" }, { TIFFTAG_COMPRESSION, -1, 1, TIFF_SHORT, FIELD_COMPRESSION, FALSE, FALSE, "Compression" }, /* XXX LONG for compatibility with some broken TIFF writers */ { TIFFTAG_COMPRESSION, -1, 1, TIFF_LONG, FIELD_COMPRESSION, FALSE, FALSE, "Compression" }, { TIFFTAG_PHOTOMETRIC, 1, 1, TIFF_SHORT, FIELD_PHOTOMETRIC, FALSE, FALSE, "PhotometricInterpretation" }, /* XXX LONG for compatibility with some broken TIFF writers */ { TIFFTAG_PHOTOMETRIC, 1, 1, TIFF_LONG, FIELD_PHOTOMETRIC, FALSE, FALSE, "PhotometricInterpretation" }, { TIFFTAG_THRESHHOLDING, 1, 1, TIFF_SHORT, FIELD_THRESHHOLDING, TRUE, FALSE, "Threshholding" }, { TIFFTAG_CELLWIDTH, 1, 1, TIFF_SHORT, FIELD_IGNORE, TRUE, FALSE, "CellWidth" }, { TIFFTAG_CELLLENGTH, 1, 1, TIFF_SHORT, FIELD_IGNORE, TRUE, FALSE, "CellLength" }, { TIFFTAG_FILLORDER, 1, 1, TIFF_SHORT, FIELD_FILLORDER, FALSE, FALSE, "FillOrder" }, { TIFFTAG_DOCUMENTNAME, -1,-1, TIFF_ASCII, FIELD_DOCUMENTNAME, TRUE, FALSE, "DocumentName" }, { TIFFTAG_IMAGEDESCRIPTION, -1,-1, TIFF_ASCII, FIELD_IMAGEDESCRIPTION, TRUE, FALSE, "ImageDescription" }, { TIFFTAG_MAKE, -1,-1, TIFF_ASCII, FIELD_MAKE, TRUE, FALSE, "Make" }, { TIFFTAG_MODEL, -1,-1, TIFF_ASCII, FIELD_MODEL, TRUE, FALSE, "Model" }, { TIFFTAG_STRIPOFFSETS, -1,-1, TIFF_LONG, FIELD_STRIPOFFSETS, FALSE, FALSE, "StripOffsets" }, { TIFFTAG_STRIPOFFSETS, -1,-1, TIFF_SHORT, FIELD_STRIPOFFSETS, FALSE, FALSE, "StripOffsets" }, { TIFFTAG_ORIENTATION, 1, 1, TIFF_SHORT, FIELD_ORIENTATION, FALSE, FALSE, "Orientation" }, { TIFFTAG_SAMPLESPERPIXEL, 1, 1, TIFF_SHORT, FIELD_SAMPLESPERPIXEL, FALSE, FALSE, "SamplesPerPixel" }, { TIFFTAG_ROWSPERSTRIP, 1, 1, TIFF_LONG, FIELD_ROWSPERSTRIP, FALSE, FALSE, "RowsPerStrip" }, { TIFFTAG_ROWSPERSTRIP, 1, 1, TIFF_SHORT, FIELD_ROWSPERSTRIP, FALSE, FALSE, "RowsPerStrip" }, { TIFFTAG_STRIPBYTECOUNTS, -1,-1, TIFF_LONG, FIELD_STRIPBYTECOUNTS, FALSE, FALSE, "StripByteCounts" }, { TIFFTAG_STRIPBYTECOUNTS, -1,-1, TIFF_SHORT, FIELD_STRIPBYTECOUNTS, FALSE, FALSE, "StripByteCounts" }, { TIFFTAG_MINSAMPLEVALUE, -2,-1, TIFF_SHORT, FIELD_MINSAMPLEVALUE, TRUE, FALSE, "MinSampleValue" }, { TIFFTAG_MAXSAMPLEVALUE, -2,-1, TIFF_SHORT, FIELD_MAXSAMPLEVALUE, TRUE, FALSE, "MaxSampleValue" }, { TIFFTAG_XRESOLUTION, 1, 1, TIFF_RATIONAL, FIELD_RESOLUTION, FALSE, FALSE, "XResolution" }, { TIFFTAG_YRESOLUTION, 1, 1, TIFF_RATIONAL, FIELD_RESOLUTION, FALSE, FALSE, "YResolution" }, { TIFFTAG_PLANARCONFIG, 1, 1, TIFF_SHORT, FIELD_PLANARCONFIG, FALSE, FALSE, "PlanarConfiguration" }, { TIFFTAG_PAGENAME, -1,-1, TIFF_ASCII, FIELD_PAGENAME, TRUE, FALSE, "PageName" }, { TIFFTAG_XPOSITION, 1, 1, TIFF_RATIONAL, FIELD_POSITION, TRUE, FALSE, "XPosition" }, { TIFFTAG_YPOSITION, 1, 1, TIFF_RATIONAL, FIELD_POSITION, TRUE, FALSE, "YPosition" }, { TIFFTAG_FREEOFFSETS, -1,-1, TIFF_LONG, FIELD_IGNORE, FALSE, FALSE, "FreeOffsets" }, { TIFFTAG_FREEBYTECOUNTS, -1,-1, TIFF_LONG, FIELD_IGNORE, FALSE, FALSE, "FreeByteCounts" }, { TIFFTAG_GRAYRESPONSEUNIT, 1, 1, TIFF_SHORT, FIELD_IGNORE, TRUE, FALSE, "GrayResponseUnit" }, { TIFFTAG_GRAYRESPONSECURVE,-1,-1, TIFF_SHORT, FIELD_IGNORE, TRUE, FALSE, "GrayResponseCurve" }, { TIFFTAG_RESOLUTIONUNIT, 1, 1, TIFF_SHORT, FIELD_RESOLUTIONUNIT, FALSE, FALSE, "ResolutionUnit" }, { TIFFTAG_PAGENUMBER, 2, 2, TIFF_SHORT, FIELD_PAGENUMBER, TRUE, FALSE, "PageNumber" }, { TIFFTAG_COLORRESPONSEUNIT, 1, 1, TIFF_SHORT, FIELD_IGNORE, TRUE, FALSE, "ColorResponseUnit" }, { TIFFTAG_TRANSFERFUNCTION, -1,-1, TIFF_SHORT, FIELD_TRANSFERFUNCTION, TRUE, FALSE, "TransferFunction" }, { TIFFTAG_SOFTWARE, -1,-1, TIFF_ASCII, FIELD_CUSTOM, TRUE, FALSE, "Software" }, { TIFFTAG_DATETIME, 20,20, TIFF_ASCII, FIELD_DATETIME, TRUE, FALSE, "DateTime" }, { TIFFTAG_ARTIST, -1,-1, TIFF_ASCII, FIELD_ARTIST, TRUE, FALSE, "Artist" }, { TIFFTAG_HOSTCOMPUTER, -1,-1, TIFF_ASCII, FIELD_HOSTCOMPUTER, TRUE, FALSE, "HostComputer" }, { TIFFTAG_WHITEPOINT, 2, 2, TIFF_RATIONAL,FIELD_WHITEPOINT, TRUE, FALSE, "WhitePoint" }, { TIFFTAG_PRIMARYCHROMATICITIES,6,6,TIFF_RATIONAL,FIELD_PRIMARYCHROMAS, TRUE, FALSE, "PrimaryChromaticities" }, { TIFFTAG_COLORMAP, -1,-1, TIFF_SHORT, FIELD_COLORMAP, TRUE, FALSE, "ColorMap" }, { TIFFTAG_HALFTONEHINTS, 2, 2, TIFF_SHORT, FIELD_HALFTONEHINTS, TRUE, FALSE, "HalftoneHints" }, { TIFFTAG_TILEWIDTH, 1, 1, TIFF_LONG, FIELD_TILEDIMENSIONS, FALSE, FALSE, "TileWidth" }, { TIFFTAG_TILEWIDTH, 1, 1, TIFF_SHORT, FIELD_TILEDIMENSIONS, FALSE, FALSE, "TileWidth" }, { TIFFTAG_TILELENGTH, 1, 1, TIFF_LONG, FIELD_TILEDIMENSIONS, FALSE, FALSE, "TileLength" }, { TIFFTAG_TILELENGTH, 1, 1, TIFF_SHORT, FIELD_TILEDIMENSIONS, FALSE, FALSE, "TileLength" }, { TIFFTAG_TILEOFFSETS, -1, 1, TIFF_LONG, FIELD_STRIPOFFSETS, FALSE, FALSE, "TileOffsets" }, { TIFFTAG_TILEBYTECOUNTS, -1, 1, TIFF_LONG, FIELD_STRIPBYTECOUNTS, FALSE, FALSE, "TileByteCounts" }, { TIFFTAG_TILEBYTECOUNTS, -1, 1, TIFF_SHORT, FIELD_STRIPBYTECOUNTS, FALSE, FALSE, "TileByteCounts" }, { TIFFTAG_SUBIFD, -1,-1, TIFF_IFD, FIELD_SUBIFD, TRUE, TRUE, "SubIFD" }, { TIFFTAG_SUBIFD, -1,-1, TIFF_LONG, FIELD_SUBIFD, TRUE, TRUE, "SubIFD" }, { TIFFTAG_INKSET, 1, 1, TIFF_SHORT, FIELD_INKSET, FALSE, FALSE, "InkSet" }, { TIFFTAG_INKNAMES, -1,-1, TIFF_ASCII, FIELD_INKNAMES, TRUE, TRUE, "InkNames" }, { TIFFTAG_NUMBEROFINKS, 1, 1, TIFF_SHORT, FIELD_NUMBEROFINKS, TRUE, FALSE, "NumberOfInks" }, { TIFFTAG_DOTRANGE, 2, 2, TIFF_SHORT, FIELD_DOTRANGE, FALSE, FALSE, "DotRange" }, { TIFFTAG_DOTRANGE, 2, 2, TIFF_BYTE, FIELD_DOTRANGE, FALSE, FALSE, "DotRange" }, { TIFFTAG_TARGETPRINTER, -1,-1, TIFF_ASCII, FIELD_TARGETPRINTER, TRUE, FALSE, "TargetPrinter" }, { TIFFTAG_EXTRASAMPLES, -1,-1, TIFF_SHORT, FIELD_EXTRASAMPLES, FALSE, TRUE, "ExtraSamples" }, /* XXX for bogus Adobe Photoshop v2.5 files */ { TIFFTAG_EXTRASAMPLES, -1,-1, TIFF_BYTE, FIELD_EXTRASAMPLES, FALSE, TRUE, "ExtraSamples" }, { TIFFTAG_SAMPLEFORMAT, -1,-1, TIFF_SHORT, FIELD_SAMPLEFORMAT, FALSE, FALSE, "SampleFormat" }, { TIFFTAG_SMINSAMPLEVALUE, -2,-1, TIFF_ANY, FIELD_SMINSAMPLEVALUE, TRUE, FALSE, "SMinSampleValue" }, { TIFFTAG_SMAXSAMPLEVALUE, -2,-1, TIFF_ANY, FIELD_SMAXSAMPLEVALUE, TRUE, FALSE, "SMaxSampleValue" }, { TIFFTAG_YCBCRCOEFFICIENTS, 3, 3, TIFF_RATIONAL, FIELD_YCBCRCOEFFICIENTS, FALSE, FALSE, "YCbCrCoefficients" }, { TIFFTAG_YCBCRSUBSAMPLING, 2, 2, TIFF_SHORT, FIELD_YCBCRSUBSAMPLING, FALSE, FALSE, "YCbCrSubsampling" }, { TIFFTAG_YCBCRPOSITIONING, 1, 1, TIFF_SHORT, FIELD_YCBCRPOSITIONING, FALSE, FALSE, "YCbCrPositioning" }, { TIFFTAG_REFERENCEBLACKWHITE,6,6,TIFF_RATIONAL, FIELD_REFBLACKWHITE, TRUE, FALSE, "ReferenceBlackWhite" }, /* XXX temporarily accept LONG for backwards compatibility */ { TIFFTAG_REFERENCEBLACKWHITE,6,6,TIFF_LONG, FIELD_REFBLACKWHITE, TRUE, FALSE, "ReferenceBlackWhite" }, { TIFFTAG_XMLPACKET, -1,-3, TIFF_BYTE, FIELD_XMLPACKET, FALSE, TRUE, "XMLPacket" }, /* begin SGI tags */ { TIFFTAG_MATTEING, 1, 1, TIFF_SHORT, FIELD_EXTRASAMPLES, FALSE, FALSE, "Matteing" }, { TIFFTAG_DATATYPE, -2,-1, TIFF_SHORT, FIELD_SAMPLEFORMAT, FALSE, FALSE, "DataType" }, { TIFFTAG_IMAGEDEPTH, 1, 1, TIFF_LONG, FIELD_IMAGEDEPTH, FALSE, FALSE, "ImageDepth" }, { TIFFTAG_IMAGEDEPTH, 1, 1, TIFF_SHORT, FIELD_IMAGEDEPTH, FALSE, FALSE, "ImageDepth" }, { TIFFTAG_TILEDEPTH, 1, 1, TIFF_LONG, FIELD_TILEDEPTH, FALSE, FALSE, "TileDepth" }, { TIFFTAG_TILEDEPTH, 1, 1, TIFF_SHORT, FIELD_TILEDEPTH, FALSE, FALSE, "TileDepth" }, /* end SGI tags */ /* begin Pixar tags */ { TIFFTAG_PIXAR_IMAGEFULLWIDTH, 1, 1, TIFF_LONG, FIELD_IMAGEFULLWIDTH, TRUE, FALSE, "ImageFullWidth" }, { TIFFTAG_PIXAR_IMAGEFULLLENGTH, 1, 1, TIFF_LONG, FIELD_IMAGEFULLLENGTH, TRUE, FALSE, "ImageFullLength" }, { TIFFTAG_PIXAR_TEXTUREFORMAT, -1,-1, TIFF_ASCII, FIELD_TEXTUREFORMAT, TRUE, FALSE, "TextureFormat" }, { TIFFTAG_PIXAR_WRAPMODES, -1,-1, TIFF_ASCII, FIELD_WRAPMODES, TRUE, FALSE, "TextureWrapModes" }, { TIFFTAG_PIXAR_FOVCOT, 1, 1, TIFF_FLOAT, FIELD_FOVCOT, TRUE, FALSE, "FieldOfViewCotan" }, { TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN, 16,16, TIFF_FLOAT, FIELD_MATRIX_WORLDTOSCREEN, TRUE, FALSE, "MatrixWorldToScreen" }, { TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA, 16,16, TIFF_FLOAT, FIELD_MATRIX_WORLDTOCAMERA, TRUE, FALSE, "MatrixWorldToCamera" }, { TIFFTAG_COPYRIGHT, -1,-1, TIFF_ASCII, FIELD_COPYRIGHT, TRUE, FALSE, "Copyright" }, /* end Pixar tags */ { TIFFTAG_RICHTIFFIPTC, -1,-3, TIFF_LONG, FIELD_RICHTIFFIPTC, FALSE, TRUE, "RichTIFFIPTC" }, { TIFFTAG_PHOTOSHOP, -1,-3, TIFF_BYTE, FIELD_PHOTOSHOP, FALSE, TRUE, "Photoshop" }, { TIFFTAG_ICCPROFILE, -1,-3, TIFF_UNDEFINED, FIELD_ICCPROFILE, FALSE, TRUE, "ICC Profile" }, { TIFFTAG_STONITS, 1, 1, TIFF_DOUBLE, FIELD_STONITS, FALSE, FALSE, "StoNits" }, }; #define N(a) (sizeof (a) / sizeof (a[0])) void _TIFFSetupFieldInfo(TIFF* tif) { if (tif->tif_fieldinfo) { int i; for (i = 0; i < tif->tif_nfields; i++) { TIFFFieldInfo *fld = tif->tif_fieldinfo[i]; if (fld->field_bit == FIELD_CUSTOM && strncmp("Tag ", fld->field_name, 4) == 0) { _TIFFfree(fld->field_name); _TIFFfree(fld); } } _TIFFfree(tif->tif_fieldinfo); tif->tif_nfields = 0; } _TIFFMergeFieldInfo(tif, tiffFieldInfo, N(tiffFieldInfo)); } static int tagCompare(const void* a, const void* b) { const TIFFFieldInfo* ta = *(const TIFFFieldInfo**) a; const TIFFFieldInfo* tb = *(const TIFFFieldInfo**) b; /* NB: be careful of return values for 16-bit platforms */ if (ta->field_tag != tb->field_tag) return (ta->field_tag < tb->field_tag ? -1 : 1); else return ((int)tb->field_type - (int)ta->field_type); } static int tagNameCompare(const void* a, const void* b) { const TIFFFieldInfo* ta = *(const TIFFFieldInfo**) a; const TIFFFieldInfo* tb = *(const TIFFFieldInfo**) b; return strcmp(ta->field_name, tb->field_name); } void _TIFFMergeFieldInfo(TIFF* tif, const TIFFFieldInfo info[], int n) { TIFFFieldInfo** tp; int i; tif->tif_foundfield = NULL; if (tif->tif_nfields > 0) { tif->tif_fieldinfo = (TIFFFieldInfo**) _TIFFrealloc(tif->tif_fieldinfo, (tif->tif_nfields+n) * sizeof (TIFFFieldInfo*)); } else { tif->tif_fieldinfo = (TIFFFieldInfo**) _TIFFmalloc(n * sizeof (TIFFFieldInfo*)); } assert(tif->tif_fieldinfo != NULL); tp = &tif->tif_fieldinfo[tif->tif_nfields]; for (i = 0; i < n; i++) tp[i] = (TIFFFieldInfo*) &info[i]; /* XXX */ /* Sort the field info by tag number */ qsort(tif->tif_fieldinfo, (size_t) (tif->tif_nfields += n), sizeof (TIFFFieldInfo*), tagCompare); } void _TIFFPrintFieldInfo(TIFF* tif, FILE* fd) { int i; fprintf(fd, "%s: \n", tif->tif_name); for (i = 0; i < tif->tif_nfields; i++) { const TIFFFieldInfo* fip = tif->tif_fieldinfo[i]; fprintf(fd, "field[%2d] %5lu, %2d, %2d, %d, %2d, %5s, %5s, %s\n" , i , (unsigned long) fip->field_tag , fip->field_readcount, fip->field_writecount , fip->field_type , fip->field_bit , fip->field_oktochange ? "TRUE" : "FALSE" , fip->field_passcount ? "TRUE" : "FALSE" , fip->field_name ); } } /* * Return size of TIFFDataType in bytes */ int TIFFDataWidth(TIFFDataType type) { switch(type) { case 0: /* nothing */ case 1: /* TIFF_BYTE */ case 2: /* TIFF_ASCII */ case 6: /* TIFF_SBYTE */ case 7: /* TIFF_UNDEFINED */ return 1; case 3: /* TIFF_SHORT */ case 8: /* TIFF_SSHORT */ return 2; case 4: /* TIFF_LONG */ case 9: /* TIFF_SLONG */ case 11: /* TIFF_FLOAT */ case 13: /* TIFF_IFD */ return 4; case 5: /* TIFF_RATIONAL */ case 10: /* TIFF_SRATIONAL */ case 12: /* TIFF_DOUBLE */ return 8; default: return 0; /* will return 0 for unknown types */ } } /* * Return nearest TIFFDataType to the sample type of an image. */ TIFFDataType _TIFFSampleToTagType(TIFF* tif) { uint32 bps = TIFFhowmany8(tif->tif_dir.td_bitspersample); switch (tif->tif_dir.td_sampleformat) { case SAMPLEFORMAT_IEEEFP: return (bps == 4 ? TIFF_FLOAT : TIFF_DOUBLE); case SAMPLEFORMAT_INT: return (bps <= 1 ? TIFF_SBYTE : bps <= 2 ? TIFF_SSHORT : TIFF_SLONG); case SAMPLEFORMAT_UINT: return (bps <= 1 ? TIFF_BYTE : bps <= 2 ? TIFF_SHORT : TIFF_LONG); case SAMPLEFORMAT_VOID: return (TIFF_UNDEFINED); } /*NOTREACHED*/ return (TIFF_UNDEFINED); } const TIFFFieldInfo* _TIFFFindFieldInfo(TIFF* tif, ttag_t tag, TIFFDataType dt) { int i, n; if (tif->tif_foundfield && tif->tif_foundfield->field_tag == tag && (dt == TIFF_ANY || dt == tif->tif_foundfield->field_type)) return (tif->tif_foundfield); /* NB: use sorted search (e.g. binary search) */ if(dt != TIFF_ANY) { TIFFFieldInfo key = {0, 0, 0, 0, 0, 0, 0, 0}; key.field_tag = tag; key.field_type = dt; return((const TIFFFieldInfo *) bsearch(&key, tif->tif_fieldinfo, tif->tif_nfields, sizeof(TIFFFieldInfo), tagCompare)); } else for (i = 0, n = tif->tif_nfields; i < n; i++) { const TIFFFieldInfo* fip = tif->tif_fieldinfo[i]; if (fip->field_tag == tag && (dt == TIFF_ANY || fip->field_type == dt)) return (tif->tif_foundfield = fip); } return ((const TIFFFieldInfo *)0); } const TIFFFieldInfo* _TIFFFindFieldInfoByName(TIFF* tif, const char *field_name, TIFFDataType dt) { int i, n; if (tif->tif_foundfield && streq(tif->tif_foundfield->field_name, field_name) && (dt == TIFF_ANY || dt == tif->tif_foundfield->field_type)) return (tif->tif_foundfield); /* NB: use sorted search (e.g. binary search) */ if(dt != TIFF_ANY) { TIFFFieldInfo key = {0, 0, 0, 0, 0, 0, 0, 0}; key.field_name = (char *)field_name; key.field_type = dt; return((const TIFFFieldInfo *) bsearch(&key, tif->tif_fieldinfo, tif->tif_nfields, sizeof(TIFFFieldInfo), tagNameCompare)); } else for (i = 0, n = tif->tif_nfields; i < n; i++) { const TIFFFieldInfo* fip = tif->tif_fieldinfo[i]; if (streq(fip->field_name, field_name) && (dt == TIFF_ANY || fip->field_type == dt)) return (tif->tif_foundfield = fip); } return ((const TIFFFieldInfo *)0); } const TIFFFieldInfo* _TIFFFieldWithTag(TIFF* tif, ttag_t tag) { const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY); if (!fip) { TIFFError("TIFFFieldWithTag", "Internal error, unknown tag 0x%x", (unsigned int) tag); assert(fip != NULL); /*NOTREACHED*/ } return (fip); } const TIFFFieldInfo* _TIFFFieldWithName(TIFF* tif, const char *field_name) { const TIFFFieldInfo* fip = _TIFFFindFieldInfoByName(tif, field_name, TIFF_ANY); if (!fip) { TIFFError("TIFFFieldWithName", "Internal error, unknown tag %s", field_name); assert(fip != NULL); /*NOTREACHED*/ } return (fip); } const TIFFFieldInfo* _TIFFFindOrRegisterFieldInfo( TIFF *tif, ttag_t tag, TIFFDataType dt ) { const TIFFFieldInfo *fld; fld = _TIFFFindFieldInfo( tif, tag, dt ); if( fld == NULL ) { fld = _TIFFCreateAnonFieldInfo( tif, tag, dt ); _TIFFMergeFieldInfo( tif, fld, 1 ); } return fld; } TIFFFieldInfo* _TIFFCreateAnonFieldInfo(TIFF *tif, ttag_t tag, TIFFDataType field_type) { TIFFFieldInfo *fld; fld = (TIFFFieldInfo *) _TIFFmalloc(sizeof (TIFFFieldInfo)); if (fld == NULL) return NULL; _TIFFmemset( fld, 0, sizeof(TIFFFieldInfo) ); fld->field_tag = tag; fld->field_readcount = TIFF_VARIABLE; fld->field_writecount = TIFF_VARIABLE; fld->field_type = field_type; fld->field_bit = FIELD_CUSTOM; fld->field_oktochange = TRUE; fld->field_passcount = TRUE; fld->field_name = (char *) _TIFFmalloc(32); if (fld->field_name == NULL) { _TIFFfree(fld); return NULL; } /* note that this name is a special sign to TIFFClose() and * _TIFFSetupFieldInfo() to free the field */ sprintf(fld->field_name, "Tag %d", (int) tag); return fld; } /* vim: set ts=8 sts=8 sw=8 noet: */