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tif_dirinfo
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1995-10-12
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/* $Header: /usr/people/sam/tiff/libtiff/RCS/tif_dirinfo.c,v 1.36 1995/06/30 05:46:47 sam Exp $ */
/*
* Copyright (c) 1988-1995 Sam Leffler
* Copyright (c) 1991-1995 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>
/*
* 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.
*/
static 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" },
{ TIFFTAG_COMPRESSION, -1, 1, TIFF_SHORT, FIELD_COMPRESSION,
FALSE, FALSE, "Compression" },
{ TIFFTAG_PHOTOMETRIC, 1, 1, TIFF_SHORT, 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" },
#ifdef COLORIMETRY_SUPPORT
{ TIFFTAG_TRANSFERFUNCTION, -1,-1, TIFF_SHORT, FIELD_TRANSFERFUNCTION,
TRUE, FALSE, "TransferFunction" },
#endif
{ TIFFTAG_SOFTWARE, -1,-1, TIFF_ASCII, FIELD_SOFTWARE,
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" },
#ifdef COLORIMETRY_SUPPORT
{ TIFFTAG_WHITEPOINT, 2, 2, TIFF_RATIONAL,FIELD_WHITEPOINT,
TRUE, FALSE, "WhitePoint" },
{ TIFFTAG_PRIMARYCHROMATICITIES,6,6,TIFF_RATIONAL,FIELD_PRIMARYCHROMAS,
TRUE, FALSE, "PrimaryChromaticities" },
#endif
{ 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" },
#ifdef TIFFTAG_SUBIFD
{ TIFFTAG_SUBIFD, -1,-1, TIFF_LONG, FIELD_SUBIFD,
TRUE, TRUE, "SubIFD" },
#endif
#ifdef CMYK_SUPPORT /* 6.0 CMYK tags */
{ TIFFTAG_INKSET, 1, 1, TIFF_SHORT, FIELD_INKSET,
FALSE, FALSE, "InkSet" },
{ TIFFTAG_INKNAMES, -1,-1, TIFF_ASCII, FIELD_INKNAMES,
TRUE, FALSE, "InkNames" },
{ 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" },
#endif
{ TIFFTAG_EXTRASAMPLES, -1,-1, TIFF_SHORT, FIELD_EXTRASAMPLES,
FALSE, FALSE, "ExtraSamples" },
/* XXX for bogus Adobe Photoshop v2.5 files */
{ TIFFTAG_EXTRASAMPLES, -1,-1, TIFF_BYTE, FIELD_EXTRASAMPLES,
FALSE, FALSE, "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" },
#ifdef YCBCR_SUPPORT /* 6.0 YCbCr tags */
{ 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" },
#endif
#ifdef COLORIMETRY_SUPPORT
{ 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" },
#endif
/* 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 */
};
#define N(a) (sizeof (a) / sizeof (a[0]))
void
_TIFFSetupFieldInfo(TIFF* tif)
{
if (tif->tif_fieldinfo) {
_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;
int c = ta->field_tag - tb->field_tag;
return (c != 0 ? c : tb->field_type - ta->field_type);
}
void
_TIFFMergeFieldInfo(TIFF* tif, const TIFFFieldInfo info[], int n)
{
TIFFFieldInfo** tp;
int i;
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*));
}
tp = &tif->tif_fieldinfo[tif->tif_nfields];
for (i = 0; i < n; i++)
tp[i] = (TIFFFieldInfo*) &info[i]; /* XXX */
/*
* NB: the core tags are presumed sorted correctly.
*/
if (tif->tif_nfields > 0)
qsort(tif->tif_fieldinfo, (size_t) (tif->tif_nfields += n),
sizeof (TIFFFieldInfo*), tagCompare);
else
tif->tif_nfields += n;
}
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] %5u, %2d, %2d, %d, %2d, %5s, %5s, %s\n"
, i
, 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
);
}
}
const int tiffDataWidth[] = {
1, /* nothing */
1, /* TIFF_BYTE */
1, /* TIFF_ASCII */
2, /* TIFF_SHORT */
4, /* TIFF_LONG */
8, /* TIFF_RATIONAL */
1, /* TIFF_SBYTE */
1, /* TIFF_UNDEFINED */
2, /* TIFF_SSHORT */
4, /* TIFF_SLONG */
8, /* TIFF_SRATIONAL */
4, /* TIFF_FLOAT */
8, /* TIFF_DOUBLE */
};
/*
* Return nearest TIFFDataType to the sample type of an image.
*/
TIFFDataType
_TIFFSampleToTagType(TIFF* tif)
{
int bps = (int) TIFFhowmany(tif->tif_dir.td_bitspersample, 8);
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)
{
static const TIFFFieldInfo *last = NULL;
int i, n;
if (last && last->field_tag == tag &&
(dt == TIFF_ANY || dt == last->field_type))
return (last);
/* NB: if table gets big, use sorted search (e.g. binary search) */
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 (last = fip);
}
return ((const TIFFFieldInfo *)0);
}
#include <assert.h>
#include <stdio.h>
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", (u_int) tag);
assert(fip != NULL);
/*NOTREACHED*/
}
return (fip);
}