--- /dev/null
+/* $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 <stdlib.h>
+#include <stdio.h>
+
+/*
+ * 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: */
projects / opencv / blobdiff