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317 lines
11 KiB
317 lines
11 KiB
/* |
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* Copyright (c) 1988-1997 Sam Leffler |
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* Copyright (c) 1991-1997 Silicon Graphics, Inc. |
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* |
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* Permission to use, copy, modify, distribute, and sell this software and |
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* its documentation for any purpose is hereby granted without fee, provided |
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* that (i) the above copyright notices and this permission notice appear in |
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* all copies of the software and related documentation, and (ii) the names of |
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* Sam Leffler and Silicon Graphics may not be used in any advertising or |
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* publicity relating to the software without the specific, prior written |
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* permission of Sam Leffler and Silicon Graphics. |
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* |
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* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY |
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. |
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* |
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* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR |
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* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, |
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
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* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF |
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* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
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* OF THIS SOFTWARE. |
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*/ |
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#ifndef _TIFFDIR_ |
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#define _TIFFDIR_ |
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#include "tiff.h" |
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#include "tiffio.h" |
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/* |
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* ``Library-private'' Directory-related Definitions. |
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*/ |
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typedef struct { |
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const TIFFField *info; |
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int count; |
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void *value; |
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} TIFFTagValue; |
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/* |
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* TIFF Image File Directories are comprised of a table of field |
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* descriptors of the form shown below. The table is sorted in |
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* ascending order by tag. The values associated with each entry are |
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* disjoint and may appear anywhere in the file (so long as they are |
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* placed on a word boundary). |
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* |
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* If the value is 4 bytes or less, in ClassicTIFF, or 8 bytes or less in |
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* BigTIFF, then it is placed in the offset field to save space. If so, |
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* it is left-justified in the offset field. |
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*/ |
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typedef struct { |
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uint16 tdir_tag; /* see below */ |
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uint16 tdir_type; /* data type; see below */ |
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uint64 tdir_count; /* number of items; length in spec */ |
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union { |
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uint16 toff_short; |
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uint32 toff_long; |
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uint64 toff_long8; |
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} tdir_offset; /* either offset or the data itself if fits */ |
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uint8 tdir_ignore; /* flag status to ignore tag when parsing tags in tif_dirread.c */ |
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} TIFFDirEntry; |
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/* |
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* Internal format of a TIFF directory entry. |
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*/ |
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typedef struct { |
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#define FIELD_SETLONGS 4 |
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/* bit vector of fields that are set */ |
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unsigned long td_fieldsset[FIELD_SETLONGS]; |
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uint32 td_imagewidth, td_imagelength, td_imagedepth; |
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uint32 td_tilewidth, td_tilelength, td_tiledepth; |
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uint32 td_subfiletype; |
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uint16 td_bitspersample; |
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uint16 td_sampleformat; |
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uint16 td_compression; |
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uint16 td_photometric; |
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uint16 td_threshholding; |
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uint16 td_fillorder; |
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uint16 td_orientation; |
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uint16 td_samplesperpixel; |
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uint32 td_rowsperstrip; |
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uint16 td_minsamplevalue, td_maxsamplevalue; |
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double* td_sminsamplevalue; |
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double* td_smaxsamplevalue; |
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float td_xresolution, td_yresolution; |
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uint16 td_resolutionunit; |
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uint16 td_planarconfig; |
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float td_xposition, td_yposition; |
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uint16 td_pagenumber[2]; |
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uint16* td_colormap[3]; |
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uint16 td_halftonehints[2]; |
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uint16 td_extrasamples; |
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uint16* td_sampleinfo; |
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/* even though the name is misleading, td_stripsperimage is the number |
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* of striles (=strips or tiles) per plane, and td_nstrips the total |
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* number of striles */ |
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uint32 td_stripsperimage; |
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uint32 td_nstrips; /* size of offset & bytecount arrays */ |
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uint64* td_stripoffset_p; /* should be accessed with TIFFGetStrileOffset */ |
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uint64* td_stripbytecount_p; /* should be accessed with TIFFGetStrileByteCount */ |
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uint32 td_stripoffsetbyteallocsize; /* number of elements currently allocated for td_stripoffset/td_stripbytecount. Only used if TIFF_LAZYSTRILELOAD is set */ |
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#ifdef STRIPBYTECOUNTSORTED_UNUSED |
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int td_stripbytecountsorted; /* is the bytecount array sorted ascending? */ |
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#endif |
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TIFFDirEntry td_stripoffset_entry; /* for deferred loading */ |
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TIFFDirEntry td_stripbytecount_entry; /* for deferred loading */ |
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uint16 td_nsubifd; |
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uint64* td_subifd; |
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/* YCbCr parameters */ |
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uint16 td_ycbcrsubsampling[2]; |
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uint16 td_ycbcrpositioning; |
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/* Colorimetry parameters */ |
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uint16* td_transferfunction[3]; |
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float* td_refblackwhite; |
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/* CMYK parameters */ |
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int td_inknameslen; |
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char* td_inknames; |
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int td_customValueCount; |
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TIFFTagValue *td_customValues; |
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unsigned char td_deferstrilearraywriting; /* see TIFFDeferStrileArrayWriting() */ |
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} TIFFDirectory; |
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/* |
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* Field flags used to indicate fields that have been set in a directory, and |
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* to reference fields when manipulating a directory. |
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*/ |
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/* |
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* FIELD_IGNORE is used to signify tags that are to be processed but otherwise |
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* ignored. This permits antiquated tags to be quietly read and discarded. |
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* Note that a bit *is* allocated for ignored tags; this is understood by the |
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* directory reading logic which uses this fact to avoid special-case handling |
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*/ |
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#define FIELD_IGNORE 0 |
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/* multi-item fields */ |
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#define FIELD_IMAGEDIMENSIONS 1 |
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#define FIELD_TILEDIMENSIONS 2 |
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#define FIELD_RESOLUTION 3 |
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#define FIELD_POSITION 4 |
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/* single-item fields */ |
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#define FIELD_SUBFILETYPE 5 |
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#define FIELD_BITSPERSAMPLE 6 |
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#define FIELD_COMPRESSION 7 |
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#define FIELD_PHOTOMETRIC 8 |
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#define FIELD_THRESHHOLDING 9 |
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#define FIELD_FILLORDER 10 |
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#define FIELD_ORIENTATION 15 |
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#define FIELD_SAMPLESPERPIXEL 16 |
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#define FIELD_ROWSPERSTRIP 17 |
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#define FIELD_MINSAMPLEVALUE 18 |
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#define FIELD_MAXSAMPLEVALUE 19 |
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#define FIELD_PLANARCONFIG 20 |
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#define FIELD_RESOLUTIONUNIT 22 |
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#define FIELD_PAGENUMBER 23 |
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#define FIELD_STRIPBYTECOUNTS 24 |
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#define FIELD_STRIPOFFSETS 25 |
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#define FIELD_COLORMAP 26 |
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#define FIELD_EXTRASAMPLES 31 |
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#define FIELD_SAMPLEFORMAT 32 |
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#define FIELD_SMINSAMPLEVALUE 33 |
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#define FIELD_SMAXSAMPLEVALUE 34 |
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#define FIELD_IMAGEDEPTH 35 |
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#define FIELD_TILEDEPTH 36 |
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#define FIELD_HALFTONEHINTS 37 |
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#define FIELD_YCBCRSUBSAMPLING 39 |
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#define FIELD_YCBCRPOSITIONING 40 |
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#define FIELD_REFBLACKWHITE 41 |
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#define FIELD_TRANSFERFUNCTION 44 |
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#define FIELD_INKNAMES 46 |
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#define FIELD_SUBIFD 49 |
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/* FIELD_CUSTOM (see tiffio.h) 65 */ |
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/* end of support for well-known tags; codec-private tags follow */ |
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#define FIELD_CODEC 66 /* base of codec-private tags */ |
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/* |
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* Pseudo-tags don't normally need field bits since they are not written to an |
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* output file (by definition). The library also has express logic to always |
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* query a codec for a pseudo-tag so allocating a field bit for one is a |
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* waste. If codec wants to promote the notion of a pseudo-tag being ``set'' |
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* or ``unset'' then it can do using internal state flags without polluting |
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* the field bit space defined for real tags. |
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*/ |
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#define FIELD_PSEUDO 0 |
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#define FIELD_LAST (32*FIELD_SETLONGS-1) |
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#define BITn(n) (((unsigned long)1L)<<((n)&0x1f)) |
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#define BITFIELDn(tif, n) ((tif)->tif_dir.td_fieldsset[(n)/32]) |
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#define TIFFFieldSet(tif, field) (BITFIELDn(tif, field) & BITn(field)) |
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#define TIFFSetFieldBit(tif, field) (BITFIELDn(tif, field) |= BITn(field)) |
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#define TIFFClrFieldBit(tif, field) (BITFIELDn(tif, field) &= ~BITn(field)) |
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#define FieldSet(fields, f) (fields[(f)/32] & BITn(f)) |
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#define ResetFieldBit(fields, f) (fields[(f)/32] &= ~BITn(f)) |
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typedef enum { |
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TIFF_SETGET_UNDEFINED = 0, |
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TIFF_SETGET_ASCII = 1, |
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TIFF_SETGET_UINT8 = 2, |
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TIFF_SETGET_SINT8 = 3, |
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TIFF_SETGET_UINT16 = 4, |
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TIFF_SETGET_SINT16 = 5, |
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TIFF_SETGET_UINT32 = 6, |
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TIFF_SETGET_SINT32 = 7, |
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TIFF_SETGET_UINT64 = 8, |
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TIFF_SETGET_SINT64 = 9, |
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TIFF_SETGET_FLOAT = 10, |
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TIFF_SETGET_DOUBLE = 11, |
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TIFF_SETGET_IFD8 = 12, |
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TIFF_SETGET_INT = 13, |
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TIFF_SETGET_UINT16_PAIR = 14, |
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TIFF_SETGET_C0_ASCII = 15, |
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TIFF_SETGET_C0_UINT8 = 16, |
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TIFF_SETGET_C0_SINT8 = 17, |
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TIFF_SETGET_C0_UINT16 = 18, |
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TIFF_SETGET_C0_SINT16 = 19, |
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TIFF_SETGET_C0_UINT32 = 20, |
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TIFF_SETGET_C0_SINT32 = 21, |
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TIFF_SETGET_C0_UINT64 = 22, |
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TIFF_SETGET_C0_SINT64 = 23, |
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TIFF_SETGET_C0_FLOAT = 24, |
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TIFF_SETGET_C0_DOUBLE = 25, |
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TIFF_SETGET_C0_IFD8 = 26, |
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TIFF_SETGET_C16_ASCII = 27, |
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TIFF_SETGET_C16_UINT8 = 28, |
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TIFF_SETGET_C16_SINT8 = 29, |
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TIFF_SETGET_C16_UINT16 = 30, |
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TIFF_SETGET_C16_SINT16 = 31, |
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TIFF_SETGET_C16_UINT32 = 32, |
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TIFF_SETGET_C16_SINT32 = 33, |
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TIFF_SETGET_C16_UINT64 = 34, |
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TIFF_SETGET_C16_SINT64 = 35, |
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TIFF_SETGET_C16_FLOAT = 36, |
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TIFF_SETGET_C16_DOUBLE = 37, |
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TIFF_SETGET_C16_IFD8 = 38, |
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TIFF_SETGET_C32_ASCII = 39, |
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TIFF_SETGET_C32_UINT8 = 40, |
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TIFF_SETGET_C32_SINT8 = 41, |
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TIFF_SETGET_C32_UINT16 = 42, |
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TIFF_SETGET_C32_SINT16 = 43, |
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TIFF_SETGET_C32_UINT32 = 44, |
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TIFF_SETGET_C32_SINT32 = 45, |
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TIFF_SETGET_C32_UINT64 = 46, |
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TIFF_SETGET_C32_SINT64 = 47, |
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TIFF_SETGET_C32_FLOAT = 48, |
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TIFF_SETGET_C32_DOUBLE = 49, |
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TIFF_SETGET_C32_IFD8 = 50, |
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TIFF_SETGET_OTHER = 51 |
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} TIFFSetGetFieldType; |
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#if defined(__cplusplus) |
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extern "C" { |
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#endif |
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extern const TIFFFieldArray* _TIFFGetFields(void); |
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extern const TIFFFieldArray* _TIFFGetExifFields(void); |
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extern const TIFFFieldArray* _TIFFGetGpsFields(void); |
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extern void _TIFFSetupFields(TIFF* tif, const TIFFFieldArray* infoarray); |
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extern void _TIFFPrintFieldInfo(TIFF*, FILE*); |
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extern int _TIFFFillStriles(TIFF*); |
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typedef enum { |
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tfiatImage, |
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tfiatExif, |
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tfiatGps, /* EXIF-GPS fields array type */ |
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tfiatOther |
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} TIFFFieldArrayType; |
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struct _TIFFFieldArray { |
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TIFFFieldArrayType type; /* array type, will be used to determine if IFD is image and such */ |
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uint32 allocated_size; /* 0 if array is constant, other if modified by future definition extension support */ |
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uint32 count; /* number of elements in fields array */ |
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TIFFField* fields; /* actual field info */ |
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}; |
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struct _TIFFField { |
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uint32 field_tag; /* field's tag */ |
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short field_readcount; /* read count/TIFF_VARIABLE/TIFF_SPP */ |
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short field_writecount; /* write count/TIFF_VARIABLE */ |
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TIFFDataType field_type; /* type of associated data */ |
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uint32 reserved; /* reserved for future extension */ |
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TIFFSetGetFieldType set_field_type; /* type to be passed to TIFFSetField */ |
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TIFFSetGetFieldType get_field_type; /* type to be passed to TIFFGetField */ |
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unsigned short field_bit; /* bit in fieldsset bit vector */ |
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unsigned char field_oktochange; /* if true, can change while writing */ |
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unsigned char field_passcount; /* if true, pass dir count on set */ |
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char* field_name; /* ASCII name */ |
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TIFFFieldArray* field_subfields; /* if field points to child ifds, child ifd field definition array */ |
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}; |
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extern int _TIFFMergeFields(TIFF*, const TIFFField[], uint32); |
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extern const TIFFField* _TIFFFindOrRegisterField(TIFF *, uint32, TIFFDataType); |
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extern TIFFField* _TIFFCreateAnonField(TIFF *, uint32, TIFFDataType); |
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extern int _TIFFCheckFieldIsValidForCodec(TIFF *tif, ttag_t tag); |
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#if defined(__cplusplus) |
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} |
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#endif |
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#endif /* _TIFFDIR_ */ |
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/* vim: set ts=8 sts=8 sw=8 noet: */ |
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/* |
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* Local Variables: |
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* mode: c |
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* c-basic-offset: 8 |
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* fill-column: 78 |
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* End: |
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*/
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