tif_dir.h
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上传日期:2014-07-20
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- /* $Id: tif_dir.h,v 1.28 2005/12/26 14:31:25 dron 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.
- */
- #ifndef _TIFFDIR_
- #define _TIFFDIR_
- /*
- * ``Library-private'' Directory-related Definitions.
- */
- /*
- * Internal format of a TIFF directory entry.
- */
- typedef struct {
- #define FIELD_SETLONGS 4
- /* bit vector of fields that are set */
- unsigned long td_fieldsset[FIELD_SETLONGS];
- uint32 td_imagewidth, td_imagelength, td_imagedepth;
- uint32 td_tilewidth, td_tilelength, td_tiledepth;
- uint32 td_subfiletype;
- uint16 td_bitspersample;
- uint16 td_sampleformat;
- uint16 td_compression;
- uint16 td_photometric;
- uint16 td_threshholding;
- uint16 td_fillorder;
- uint16 td_orientation;
- uint16 td_samplesperpixel;
- uint32 td_rowsperstrip;
- uint16 td_minsamplevalue, td_maxsamplevalue;
- double td_sminsamplevalue, td_smaxsamplevalue;
- float td_xresolution, td_yresolution;
- uint16 td_resolutionunit;
- uint16 td_planarconfig;
- float td_xposition, td_yposition;
- uint16 td_pagenumber[2];
- uint16* td_colormap[3];
- uint16 td_halftonehints[2];
- uint16 td_extrasamples;
- uint16* td_sampleinfo;
- tstrip_t td_stripsperimage;
- tstrip_t td_nstrips; /* size of offset & bytecount arrays */
- uint32* td_stripoffset;
- uint32* td_stripbytecount;
- int td_stripbytecountsorted; /* is the bytecount array sorted ascending? */
- uint16 td_nsubifd;
- uint32* td_subifd;
- /* YCbCr parameters */
- uint16 td_ycbcrsubsampling[2];
- uint16 td_ycbcrpositioning;
- /* Colorimetry parameters */
- uint16* td_transferfunction[3];
- /* CMYK parameters */
- int td_inknameslen;
- char* td_inknames;
- int td_customValueCount;
- TIFFTagValue *td_customValues;
- } TIFFDirectory;
- /*
- * Field flags used to indicate fields that have
- * been set in a directory, and to reference fields
- * when manipulating a directory.
- */
- /*
- * FIELD_IGNORE is used to signify tags that are to
- * be processed but otherwise ignored. This permits
- * antiquated tags to be quietly read and discarded.
- * Note that a bit *is* allocated for ignored tags;
- * this is understood by the directory reading logic
- * which uses this fact to avoid special-case handling
- */
- #define FIELD_IGNORE 0
- /* multi-item fields */
- #define FIELD_IMAGEDIMENSIONS 1
- #define FIELD_TILEDIMENSIONS 2
- #define FIELD_RESOLUTION 3
- #define FIELD_POSITION 4
- /* single-item fields */
- #define FIELD_SUBFILETYPE 5
- #define FIELD_BITSPERSAMPLE 6
- #define FIELD_COMPRESSION 7
- #define FIELD_PHOTOMETRIC 8
- #define FIELD_THRESHHOLDING 9
- #define FIELD_FILLORDER 10
- #define FIELD_ORIENTATION 15
- #define FIELD_SAMPLESPERPIXEL 16
- #define FIELD_ROWSPERSTRIP 17
- #define FIELD_MINSAMPLEVALUE 18
- #define FIELD_MAXSAMPLEVALUE 19
- #define FIELD_PLANARCONFIG 20
- #define FIELD_RESOLUTIONUNIT 22
- #define FIELD_PAGENUMBER 23
- #define FIELD_STRIPBYTECOUNTS 24
- #define FIELD_STRIPOFFSETS 25
- #define FIELD_COLORMAP 26
- #define FIELD_EXTRASAMPLES 31
- #define FIELD_SAMPLEFORMAT 32
- #define FIELD_SMINSAMPLEVALUE 33
- #define FIELD_SMAXSAMPLEVALUE 34
- #define FIELD_IMAGEDEPTH 35
- #define FIELD_TILEDEPTH 36
- #define FIELD_HALFTONEHINTS 37
- #define FIELD_YCBCRSUBSAMPLING 39
- #define FIELD_YCBCRPOSITIONING 40
- #define FIELD_TRANSFERFUNCTION 44
- #define FIELD_INKNAMES 46
- #define FIELD_SUBIFD 49
- /* FIELD_CUSTOM (see tiffio.h) 65 */
- /* end of support for well-known tags; codec-private tags follow */
- #define FIELD_CODEC 66 /* base of codec-private tags */
- /*
- * Pseudo-tags don't normally need field bits since they
- * are not written to an output file (by definition).
- * The library also has express logic to always query a
- * codec for a pseudo-tag so allocating a field bit for
- * one is a waste. If codec wants to promote the notion
- * of a pseudo-tag being ``set'' or ``unset'' then it can
- * do using internal state flags without polluting the
- * field bit space defined for real tags.
- */
- #define FIELD_PSEUDO 0
- #define FIELD_LAST (32*FIELD_SETLONGS-1)
- #define TIFFExtractData(tif, type, v)
- ((uint32) ((tif)->tif_header.tiff_magic == TIFF_BIGENDIAN ?
- ((v) >> (tif)->tif_typeshift[type]) & (tif)->tif_typemask[type] :
- (v) & (tif)->tif_typemask[type]))
- #define TIFFInsertData(tif, type, v)
- ((uint32) ((tif)->tif_header.tiff_magic == TIFF_BIGENDIAN ?
- ((v) & (tif)->tif_typemask[type]) << (tif)->tif_typeshift[type] :
- (v) & (tif)->tif_typemask[type]))
- #define BITn(n) (((unsigned long)1L)<<((n)&0x1f))
- #define BITFIELDn(tif, n) ((tif)->tif_dir.td_fieldsset[(n)/32])
- #define TIFFFieldSet(tif, field) (BITFIELDn(tif, field) & BITn(field))
- #define TIFFSetFieldBit(tif, field) (BITFIELDn(tif, field) |= BITn(field))
- #define TIFFClrFieldBit(tif, field) (BITFIELDn(tif, field) &= ~BITn(field))
- #define FieldSet(fields, f) (fields[(f)/32] & BITn(f))
- #define ResetFieldBit(fields, f) (fields[(f)/32] &= ~BITn(f))
- #if defined(__cplusplus)
- extern "C" {
- #endif
- extern const TIFFFieldInfo *_TIFFGetFieldInfo(size_t *);
- extern const TIFFFieldInfo *_TIFFGetExifFieldInfo(size_t *);
- extern void _TIFFSetupFieldInfo(TIFF*, const TIFFFieldInfo[], size_t);
- extern void _TIFFPrintFieldInfo(TIFF*, FILE*);
- extern TIFFDataType _TIFFSampleToTagType(TIFF*);
- extern const TIFFFieldInfo* _TIFFFindOrRegisterFieldInfo( TIFF *tif,
- ttag_t tag,
- TIFFDataType dt );
- extern TIFFFieldInfo* _TIFFCreateAnonFieldInfo( TIFF *tif, ttag_t tag,
- TIFFDataType dt );
- #define _TIFFMergeFieldInfo TIFFMergeFieldInfo
- #define _TIFFFindFieldInfo TIFFFindFieldInfo
- #define _TIFFFindFieldInfoByName TIFFFindFieldInfoByName
- #define _TIFFFieldWithTag TIFFFieldWithTag
- #define _TIFFFieldWithName TIFFFieldWithName
- #if defined(__cplusplus)
- }
- #endif
- #endif /* _TIFFDIR_ */
- /* vim: set ts=8 sts=8 sw=8 noet: */