| 1 | /* $Id: tif_dir.h,v 1.28 2005/12/26 14:31:25 dron Exp $ */
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| 2 |
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| 3 | /*
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| 4 | * Copyright (c) 1988-1997 Sam Leffler
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| 5 | * Copyright (c) 1991-1997 Silicon Graphics, Inc.
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| 6 | *
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| 7 | * Permission to use, copy, modify, distribute, and sell this software and
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| 8 | * its documentation for any purpose is hereby granted without fee, provided
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| 9 | * that (i) the above copyright notices and this permission notice appear in
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| 10 | * all copies of the software and related documentation, and (ii) the names of
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| 11 | * Sam Leffler and Silicon Graphics may not be used in any advertising or
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| 12 | * publicity relating to the software without the specific, prior written
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| 13 | * permission of Sam Leffler and Silicon Graphics.
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| 14 | *
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| 15 | * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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| 16 | * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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| 17 | * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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| 18 | *
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| 19 | * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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| 20 | * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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| 21 | * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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| 22 | * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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| 23 | * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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| 24 | * OF THIS SOFTWARE.
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| 25 | */
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| 26 |
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| 27 | #ifndef _TIFFDIR_
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| 28 | #define _TIFFDIR_
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| 29 | /*
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| 30 | * ``Library-private'' Directory-related Definitions.
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| 31 | */
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| 32 |
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| 33 | /*
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| 34 | * Internal format of a TIFF directory entry.
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| 35 | */
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| 36 | typedef struct {
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| 37 | #define FIELD_SETLONGS 4
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| 38 | /* bit vector of fields that are set */
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| 39 | unsigned long td_fieldsset[FIELD_SETLONGS];
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| 40 |
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| 41 | uint32 td_imagewidth, td_imagelength, td_imagedepth;
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| 42 | uint32 td_tilewidth, td_tilelength, td_tiledepth;
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| 43 | uint32 td_subfiletype;
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| 44 | uint16 td_bitspersample;
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| 45 | uint16 td_sampleformat;
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| 46 | uint16 td_compression;
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| 47 | uint16 td_photometric;
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| 48 | uint16 td_threshholding;
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| 49 | uint16 td_fillorder;
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| 50 | uint16 td_orientation;
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| 51 | uint16 td_samplesperpixel;
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| 52 | uint32 td_rowsperstrip;
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| 53 | uint16 td_minsamplevalue, td_maxsamplevalue;
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| 54 | double td_sminsamplevalue, td_smaxsamplevalue;
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| 55 | float td_xresolution, td_yresolution;
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| 56 | uint16 td_resolutionunit;
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| 57 | uint16 td_planarconfig;
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| 58 | float td_xposition, td_yposition;
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| 59 | uint16 td_pagenumber[2];
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| 60 | uint16* td_colormap[3];
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| 61 | uint16 td_halftonehints[2];
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| 62 | uint16 td_extrasamples;
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| 63 | uint16* td_sampleinfo;
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| 64 | tstrip_t td_stripsperimage;
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| 65 | tstrip_t td_nstrips; /* size of offset & bytecount arrays */
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| 66 | uint32* td_stripoffset;
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| 67 | uint32* td_stripbytecount;
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| 68 | int td_stripbytecountsorted; /* is the bytecount array sorted ascending? */
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| 69 | uint16 td_nsubifd;
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| 70 | uint32* td_subifd;
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| 71 | /* YCbCr parameters */
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| 72 | uint16 td_ycbcrsubsampling[2];
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| 73 | uint16 td_ycbcrpositioning;
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| 74 | /* Colorimetry parameters */
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| 75 | uint16* td_transferfunction[3];
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| 76 | /* CMYK parameters */
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| 77 | int td_inknameslen;
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| 78 | char* td_inknames;
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| 79 |
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| 80 | int td_customValueCount;
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| 81 | TIFFTagValue *td_customValues;
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| 82 | } TIFFDirectory;
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| 83 |
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| 84 | /*
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| 85 | * Field flags used to indicate fields that have
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| 86 | * been set in a directory, and to reference fields
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| 87 | * when manipulating a directory.
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| 88 | */
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| 89 |
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| 90 | /*
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| 91 | * FIELD_IGNORE is used to signify tags that are to
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| 92 | * be processed but otherwise ignored. This permits
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| 93 | * antiquated tags to be quietly read and discarded.
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| 94 | * Note that a bit *is* allocated for ignored tags;
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| 95 | * this is understood by the directory reading logic
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| 96 | * which uses this fact to avoid special-case handling
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| 97 | */
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| 98 | #define FIELD_IGNORE 0
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| 99 |
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| 100 | /* multi-item fields */
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| 101 | #define FIELD_IMAGEDIMENSIONS 1
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| 102 | #define FIELD_TILEDIMENSIONS 2
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| 103 | #define FIELD_RESOLUTION 3
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| 104 | #define FIELD_POSITION 4
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| 105 |
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| 106 | /* single-item fields */
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| 107 | #define FIELD_SUBFILETYPE 5
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| 108 | #define FIELD_BITSPERSAMPLE 6
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| 109 | #define FIELD_COMPRESSION 7
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| 110 | #define FIELD_PHOTOMETRIC 8
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| 111 | #define FIELD_THRESHHOLDING 9
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| 112 | #define FIELD_FILLORDER 10
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| 113 | #define FIELD_ORIENTATION 15
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| 114 | #define FIELD_SAMPLESPERPIXEL 16
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| 115 | #define FIELD_ROWSPERSTRIP 17
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| 116 | #define FIELD_MINSAMPLEVALUE 18
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| 117 | #define FIELD_MAXSAMPLEVALUE 19
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| 118 | #define FIELD_PLANARCONFIG 20
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| 119 | #define FIELD_RESOLUTIONUNIT 22
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| 120 | #define FIELD_PAGENUMBER 23
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| 121 | #define FIELD_STRIPBYTECOUNTS 24
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| 122 | #define FIELD_STRIPOFFSETS 25
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| 123 | #define FIELD_COLORMAP 26
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| 124 | #define FIELD_EXTRASAMPLES 31
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| 125 | #define FIELD_SAMPLEFORMAT 32
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| 126 | #define FIELD_SMINSAMPLEVALUE 33
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| 127 | #define FIELD_SMAXSAMPLEVALUE 34
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| 128 | #define FIELD_IMAGEDEPTH 35
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| 129 | #define FIELD_TILEDEPTH 36
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| 130 | #define FIELD_HALFTONEHINTS 37
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| 131 | #define FIELD_YCBCRSUBSAMPLING 39
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| 132 | #define FIELD_YCBCRPOSITIONING 40
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| 133 | #define FIELD_TRANSFERFUNCTION 44
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| 134 | #define FIELD_INKNAMES 46
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| 135 | #define FIELD_SUBIFD 49
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| 136 | /* FIELD_CUSTOM (see tiffio.h) 65 */
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| 137 | /* end of support for well-known tags; codec-private tags follow */
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| 138 | #define FIELD_CODEC 66 /* base of codec-private tags */
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| 139 |
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| 140 |
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| 141 | /*
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| 142 | * Pseudo-tags don't normally need field bits since they
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| 143 | * are not written to an output file (by definition).
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| 144 | * The library also has express logic to always query a
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| 145 | * codec for a pseudo-tag so allocating a field bit for
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| 146 | * one is a waste. If codec wants to promote the notion
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| 147 | * of a pseudo-tag being ``set'' or ``unset'' then it can
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| 148 | * do using internal state flags without polluting the
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| 149 | * field bit space defined for real tags.
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| 150 | */
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| 151 | #define FIELD_PSEUDO 0
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| 152 |
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| 153 | #define FIELD_LAST (32*FIELD_SETLONGS-1)
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| 154 |
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| 155 | #define TIFFExtractData(tif, type, v) \
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| 156 | ((uint32) ((tif)->tif_header.tiff_magic == TIFF_BIGENDIAN ? \
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| 157 | ((v) >> (tif)->tif_typeshift[type]) & (tif)->tif_typemask[type] : \
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| 158 | (v) & (tif)->tif_typemask[type]))
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| 159 | #define TIFFInsertData(tif, type, v) \
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| 160 | ((uint32) ((tif)->tif_header.tiff_magic == TIFF_BIGENDIAN ? \
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| 161 | ((v) & (tif)->tif_typemask[type]) << (tif)->tif_typeshift[type] : \
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| 162 | (v) & (tif)->tif_typemask[type]))
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| 163 |
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| 164 |
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| 165 | #define BITn(n) (((unsigned long)1L)<<((n)&0x1f))
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| 166 | #define BITFIELDn(tif, n) ((tif)->tif_dir.td_fieldsset[(n)/32])
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| 167 | #define TIFFFieldSet(tif, field) (BITFIELDn(tif, field) & BITn(field))
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| 168 | #define TIFFSetFieldBit(tif, field) (BITFIELDn(tif, field) |= BITn(field))
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| 169 | #define TIFFClrFieldBit(tif, field) (BITFIELDn(tif, field) &= ~BITn(field))
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| 170 |
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| 171 | #define FieldSet(fields, f) (fields[(f)/32] & BITn(f))
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| 172 | #define ResetFieldBit(fields, f) (fields[(f)/32] &= ~BITn(f))
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| 173 |
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| 174 | #if defined(__cplusplus)
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| 175 | extern "C" {
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| 176 | #endif
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| 177 | extern const TIFFFieldInfo *_TIFFGetFieldInfo(size_t *);
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| 178 | extern const TIFFFieldInfo *_TIFFGetExifFieldInfo(size_t *);
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| 179 | extern void _TIFFSetupFieldInfo(TIFF*, const TIFFFieldInfo[], size_t);
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| 180 | extern void _TIFFPrintFieldInfo(TIFF*, FILE*);
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| 181 | extern TIFFDataType _TIFFSampleToTagType(TIFF*);
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| 182 | extern const TIFFFieldInfo* _TIFFFindOrRegisterFieldInfo( TIFF *tif,
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| 183 | ttag_t tag,
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| 184 | TIFFDataType dt );
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| 185 | extern TIFFFieldInfo* _TIFFCreateAnonFieldInfo( TIFF *tif, ttag_t tag,
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| 186 | TIFFDataType dt );
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| 187 |
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| 188 | #define _TIFFMergeFieldInfo TIFFMergeFieldInfo
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| 189 | #define _TIFFFindFieldInfo TIFFFindFieldInfo
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| 190 | #define _TIFFFindFieldInfoByName TIFFFindFieldInfoByName
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| 191 | #define _TIFFFieldWithTag TIFFFieldWithTag
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| 192 | #define _TIFFFieldWithName TIFFFieldWithName
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| 193 |
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| 194 | #if defined(__cplusplus)
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| 195 | }
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| 196 | #endif
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| 197 | #endif /* _TIFFDIR_ */
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| 198 |
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| 199 | /* vim: set ts=8 sts=8 sw=8 noet: */
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