OLD | NEW |
| (Empty) |
1 /* $Id: tif_dir.h,v 1.54 2011-02-18 20:53:05 fwarmerdam Exp $ */ | |
2 | |
3 /* | |
4 * Copyright (c) 1988-1997 Sam Leffler | |
5 * Copyright (c) 1991-1997 Silicon Graphics, Inc. | |
6 * | |
7 * Permission to use, copy, modify, distribute, and sell this software and | |
8 * its documentation for any purpose is hereby granted without fee, provided | |
9 * that (i) the above copyright notices and this permission notice appear in | |
10 * all copies of the software and related documentation, and (ii) the names of | |
11 * Sam Leffler and Silicon Graphics may not be used in any advertising or | |
12 * publicity relating to the software without the specific, prior written | |
13 * permission of Sam Leffler and Silicon Graphics. | |
14 * | |
15 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, | |
16 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY | |
17 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. | |
18 * | |
19 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR | |
20 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, | |
21 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
22 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF | |
23 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
24 * OF THIS SOFTWARE. | |
25 */ | |
26 | |
27 #ifndef _TIFFDIR_ | |
28 #define _TIFFDIR_ | |
29 /* | |
30 * ``Library-private'' Directory-related Definitions. | |
31 */ | |
32 | |
33 typedef struct { | |
34 const TIFFField *info; | |
35 int count; | |
36 void *value; | |
37 } TIFFTagValue; | |
38 | |
39 /* | |
40 * TIFF Image File Directories are comprised of a table of field | |
41 * descriptors of the form shown below. The table is sorted in | |
42 * ascending order by tag. The values associated with each entry are | |
43 * disjoint and may appear anywhere in the file (so long as they are | |
44 * placed on a word boundary). | |
45 * | |
46 * If the value is 4 bytes or less, in ClassicTIFF, or 8 bytes or less in | |
47 * BigTIFF, then it is placed in the offset field to save space. If so, | |
48 * it is left-justified in the offset field. | |
49 */ | |
50 typedef struct { | |
51 uint16 tdir_tag; /* see below */ | |
52 uint16 tdir_type; /* data type; see below */ | |
53 uint64 tdir_count; /* number of items; length in spec */ | |
54 union { | |
55 uint16 toff_short; | |
56 uint32 toff_long; | |
57 uint64 toff_long8; | |
58 } tdir_offset; /* either offset or the data itself if fits */ | |
59 } TIFFDirEntry; | |
60 | |
61 /* | |
62 * Internal format of a TIFF directory entry. | |
63 */ | |
64 typedef struct { | |
65 #define FIELD_SETLONGS 4 | |
66 /* bit vector of fields that are set */ | |
67 unsigned long td_fieldsset[FIELD_SETLONGS]; | |
68 | |
69 uint32 td_imagewidth, td_imagelength, td_imagedepth; | |
70 uint32 td_tilewidth, td_tilelength, td_tiledepth; | |
71 uint32 td_subfiletype; | |
72 uint16 td_bitspersample; | |
73 uint16 td_sampleformat; | |
74 uint16 td_compression; | |
75 uint16 td_photometric; | |
76 uint16 td_threshholding; | |
77 uint16 td_fillorder; | |
78 uint16 td_orientation; | |
79 uint16 td_samplesperpixel; | |
80 uint32 td_rowsperstrip; | |
81 uint16 td_minsamplevalue, td_maxsamplevalue; | |
82 double* td_sminsamplevalue; | |
83 double* td_smaxsamplevalue; | |
84 float td_xresolution, td_yresolution; | |
85 uint16 td_resolutionunit; | |
86 uint16 td_planarconfig; | |
87 float td_xposition, td_yposition; | |
88 uint16 td_pagenumber[2]; | |
89 uint16* td_colormap[3]; | |
90 uint16 td_halftonehints[2]; | |
91 uint16 td_extrasamples; | |
92 uint16* td_sampleinfo; | |
93 /* even though the name is misleading, td_stripsperimage is the number | |
94 * of striles (=strips or tiles) per plane, and td_nstrips the total | |
95 * number of striles */ | |
96 uint32 td_stripsperimage; | |
97 uint32 td_nstrips; /* size of offset & bytecount arrays */ | |
98 uint64* td_stripoffset; | |
99 uint64* td_stripbytecount; | |
100 int td_stripbytecountsorted; /* is the bytecount array sorted ascend
ing? */ | |
101 #if defined(DEFER_STRILE_LOAD) | |
102 TIFFDirEntry td_stripoffset_entry; /* for deferred loading */ | |
103 TIFFDirEntry td_stripbytecount_entry; /* for deferred loading */ | |
104 #endif | |
105 uint16 td_nsubifd; | |
106 uint64* td_subifd; | |
107 /* YCbCr parameters */ | |
108 uint16 td_ycbcrsubsampling[2]; | |
109 uint16 td_ycbcrpositioning; | |
110 /* Colorimetry parameters */ | |
111 uint16* td_transferfunction[3]; | |
112 float* td_refblackwhite; | |
113 /* CMYK parameters */ | |
114 int td_inknameslen; | |
115 char* td_inknames; | |
116 | |
117 int td_customValueCount; | |
118 TIFFTagValue *td_customValues; | |
119 } TIFFDirectory; | |
120 | |
121 /* | |
122 * Field flags used to indicate fields that have been set in a directory, and | |
123 * to reference fields when manipulating a directory. | |
124 */ | |
125 | |
126 /* | |
127 * FIELD_IGNORE is used to signify tags that are to be processed but otherwise | |
128 * ignored. This permits antiquated tags to be quietly read and discarded. | |
129 * Note that a bit *is* allocated for ignored tags; this is understood by the | |
130 * directory reading logic which uses this fact to avoid special-case handling | |
131 */ | |
132 #define FIELD_IGNORE 0 | |
133 | |
134 /* multi-item fields */ | |
135 #define FIELD_IMAGEDIMENSIONS 1 | |
136 #define FIELD_TILEDIMENSIONS 2 | |
137 #define FIELD_RESOLUTION 3 | |
138 #define FIELD_POSITION 4 | |
139 | |
140 /* single-item fields */ | |
141 #define FIELD_SUBFILETYPE 5 | |
142 #define FIELD_BITSPERSAMPLE 6 | |
143 #define FIELD_COMPRESSION 7 | |
144 #define FIELD_PHOTOMETRIC 8 | |
145 #define FIELD_THRESHHOLDING 9 | |
146 #define FIELD_FILLORDER 10 | |
147 #define FIELD_ORIENTATION 15 | |
148 #define FIELD_SAMPLESPERPIXEL 16 | |
149 #define FIELD_ROWSPERSTRIP 17 | |
150 #define FIELD_MINSAMPLEVALUE 18 | |
151 #define FIELD_MAXSAMPLEVALUE 19 | |
152 #define FIELD_PLANARCONFIG 20 | |
153 #define FIELD_RESOLUTIONUNIT 22 | |
154 #define FIELD_PAGENUMBER 23 | |
155 #define FIELD_STRIPBYTECOUNTS 24 | |
156 #define FIELD_STRIPOFFSETS 25 | |
157 #define FIELD_COLORMAP 26 | |
158 #define FIELD_EXTRASAMPLES 31 | |
159 #define FIELD_SAMPLEFORMAT 32 | |
160 #define FIELD_SMINSAMPLEVALUE 33 | |
161 #define FIELD_SMAXSAMPLEVALUE 34 | |
162 #define FIELD_IMAGEDEPTH 35 | |
163 #define FIELD_TILEDEPTH 36 | |
164 #define FIELD_HALFTONEHINTS 37 | |
165 #define FIELD_YCBCRSUBSAMPLING 39 | |
166 #define FIELD_YCBCRPOSITIONING 40 | |
167 #define FIELD_REFBLACKWHITE 41 | |
168 #define FIELD_TRANSFERFUNCTION 44 | |
169 #define FIELD_INKNAMES 46 | |
170 #define FIELD_SUBIFD 49 | |
171 /* FIELD_CUSTOM (see tiffio.h) 65 */ | |
172 /* end of support for well-known tags; codec-private tags follow */ | |
173 #define FIELD_CODEC 66 /* base of codec-private tags */ | |
174 | |
175 | |
176 /* | |
177 * Pseudo-tags don't normally need field bits since they are not written to an | |
178 * output file (by definition). The library also has express logic to always | |
179 * query a codec for a pseudo-tag so allocating a field bit for one is a | |
180 * waste. If codec wants to promote the notion of a pseudo-tag being ``set'' | |
181 * or ``unset'' then it can do using internal state flags without polluting | |
182 * the field bit space defined for real tags. | |
183 */ | |
184 #define FIELD_PSEUDO 0 | |
185 | |
186 #define FIELD_LAST (32*FIELD_SETLONGS-1) | |
187 | |
188 #define BITn(n) (((unsigned long)1L)<<((n)&0x1f)) | |
189 #define BITFIELDn(tif, n) ((tif)->tif_dir.td_fieldsset[(n)/32]) | |
190 #define TIFFFieldSet(tif, field) (BITFIELDn(tif, field) & BITn(field)) | |
191 #define TIFFSetFieldBit(tif, field) (BITFIELDn(tif, field) |= BITn(field)) | |
192 #define TIFFClrFieldBit(tif, field) (BITFIELDn(tif, field) &= ~BITn(field)) | |
193 | |
194 #define FieldSet(fields, f) (fields[(f)/32] & BITn(f)) | |
195 #define ResetFieldBit(fields, f) (fields[(f)/32] &= ~BITn(f)) | |
196 | |
197 typedef enum { | |
198 TIFF_SETGET_UNDEFINED = 0, | |
199 TIFF_SETGET_ASCII = 1, | |
200 TIFF_SETGET_UINT8 = 2, | |
201 TIFF_SETGET_SINT8 = 3, | |
202 TIFF_SETGET_UINT16 = 4, | |
203 TIFF_SETGET_SINT16 = 5, | |
204 TIFF_SETGET_UINT32 = 6, | |
205 TIFF_SETGET_SINT32 = 7, | |
206 TIFF_SETGET_UINT64 = 8, | |
207 TIFF_SETGET_SINT64 = 9, | |
208 TIFF_SETGET_FLOAT = 10, | |
209 TIFF_SETGET_DOUBLE = 11, | |
210 TIFF_SETGET_IFD8 = 12, | |
211 TIFF_SETGET_INT = 13, | |
212 TIFF_SETGET_UINT16_PAIR = 14, | |
213 TIFF_SETGET_C0_ASCII = 15, | |
214 TIFF_SETGET_C0_UINT8 = 16, | |
215 TIFF_SETGET_C0_SINT8 = 17, | |
216 TIFF_SETGET_C0_UINT16 = 18, | |
217 TIFF_SETGET_C0_SINT16 = 19, | |
218 TIFF_SETGET_C0_UINT32 = 20, | |
219 TIFF_SETGET_C0_SINT32 = 21, | |
220 TIFF_SETGET_C0_UINT64 = 22, | |
221 TIFF_SETGET_C0_SINT64 = 23, | |
222 TIFF_SETGET_C0_FLOAT = 24, | |
223 TIFF_SETGET_C0_DOUBLE = 25, | |
224 TIFF_SETGET_C0_IFD8 = 26, | |
225 TIFF_SETGET_C16_ASCII = 27, | |
226 TIFF_SETGET_C16_UINT8 = 28, | |
227 TIFF_SETGET_C16_SINT8 = 29, | |
228 TIFF_SETGET_C16_UINT16 = 30, | |
229 TIFF_SETGET_C16_SINT16 = 31, | |
230 TIFF_SETGET_C16_UINT32 = 32, | |
231 TIFF_SETGET_C16_SINT32 = 33, | |
232 TIFF_SETGET_C16_UINT64 = 34, | |
233 TIFF_SETGET_C16_SINT64 = 35, | |
234 TIFF_SETGET_C16_FLOAT = 36, | |
235 TIFF_SETGET_C16_DOUBLE = 37, | |
236 TIFF_SETGET_C16_IFD8 = 38, | |
237 TIFF_SETGET_C32_ASCII = 39, | |
238 TIFF_SETGET_C32_UINT8 = 40, | |
239 TIFF_SETGET_C32_SINT8 = 41, | |
240 TIFF_SETGET_C32_UINT16 = 42, | |
241 TIFF_SETGET_C32_SINT16 = 43, | |
242 TIFF_SETGET_C32_UINT32 = 44, | |
243 TIFF_SETGET_C32_SINT32 = 45, | |
244 TIFF_SETGET_C32_UINT64 = 46, | |
245 TIFF_SETGET_C32_SINT64 = 47, | |
246 TIFF_SETGET_C32_FLOAT = 48, | |
247 TIFF_SETGET_C32_DOUBLE = 49, | |
248 TIFF_SETGET_C32_IFD8 = 50, | |
249 TIFF_SETGET_OTHER = 51 | |
250 } TIFFSetGetFieldType; | |
251 | |
252 #if defined(__cplusplus) | |
253 extern "C" { | |
254 #endif | |
255 | |
256 extern const TIFFFieldArray* _TIFFGetFields(void); | |
257 extern const TIFFFieldArray* _TIFFGetExifFields(void); | |
258 extern void _TIFFSetupFields(TIFF* tif, const TIFFFieldArray* infoarray); | |
259 extern void _TIFFPrintFieldInfo(TIFF*, FILE*); | |
260 | |
261 extern int _TIFFFillStriles(TIFF*); | |
262 | |
263 typedef enum { | |
264 tfiatImage, | |
265 tfiatExif, | |
266 tfiatOther | |
267 } TIFFFieldArrayType; | |
268 | |
269 struct _TIFFFieldArray { | |
270 TIFFFieldArrayType type; /* array type, will be used to determine if
IFD is image and such */ | |
271 uint32 allocated_size; /* 0 if array is constant, other if modified
by future definition extension support */ | |
272 uint32 count; /* number of elements in fields array */ | |
273 TIFFField* fields; /* actual field info */ | |
274 }; | |
275 | |
276 struct _TIFFField { | |
277 uint32 field_tag; /* field's tag */ | |
278 short field_readcount; /* read count/TIFF_VARIABLE/TIFF
_SPP */ | |
279 short field_writecount; /* write count/TIFF_VARIABLE */ | |
280 TIFFDataType field_type; /* type of associated data */ | |
281 uint32 reserved; /* reserved for future extension
*/ | |
282 TIFFSetGetFieldType set_field_type; /* type to be passed to TIFFSetF
ield */ | |
283 TIFFSetGetFieldType get_field_type; /* type to be passed to TIFFGetF
ield */ | |
284 unsigned short field_bit; /* bit in fieldsset bit vector *
/ | |
285 unsigned char field_oktochange; /* if true, can change while wri
ting */ | |
286 unsigned char field_passcount; /* if true, pass dir count on se
t */ | |
287 char* field_name; /* ASCII name */ | |
288 TIFFFieldArray* field_subfields; /* if field points to child ifds
, child ifd field definition array */ | |
289 }; | |
290 | |
291 extern int _TIFFMergeFields(TIFF*, const TIFFField[], uint32); | |
292 extern const TIFFField* _TIFFFindOrRegisterField(TIFF *, uint32, TIFFDataType); | |
293 extern TIFFField* _TIFFCreateAnonField(TIFF *, uint32, TIFFDataType); | |
294 | |
295 #if defined(__cplusplus) | |
296 } | |
297 #endif | |
298 #endif /* _TIFFDIR_ */ | |
299 | |
300 /* vim: set ts=8 sts=8 sw=8 noet: */ | |
301 | |
302 /* | |
303 * Local Variables: | |
304 * mode: c | |
305 * c-basic-offset: 8 | |
306 * fill-column: 78 | |
307 * End: | |
308 */ | |
OLD | NEW |