1 /* $Id: tif_dirinfo.c,v 1.62 2006/02/07 10:45:38 dron 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 /*
28 * TIFF Library.
29 *
30 * Core Directory Tag Support.
31 */
32 #include "tiffiop.h"
33 #include <stdlib.h>
34
35 /*
36 * NB: NB: THIS ARRAY IS ASSUMED TO BE SORTED BY TAG.
37 * If a tag can have both LONG and SHORT types then the LONG must be
38 * placed before the SHORT for writing to work properly.
39 *
40 * NOTE: The second field (field_readcount) and third field (field_writecount)
41 * sometimes use the values TIFF_VARIABLE (-1), TIFF_VARIABLE2 (-3)
42 * and TIFFTAG_SPP (-2). The macros should be used but would throw off
43 * the formatting of the code, so please interprete the -1, -2 and -3
44 * values accordingly.
45 */
46 static const TIFFFieldInfo
47 tiffFieldInfo[] = {
48 { TIFFTAG_SUBFILETYPE, 1, 1, TIFF_LONG, FIELD_SUBFILETYPE,
49 1, 0, "SubfileType" },
50 /* XXX SHORT for compatibility w/ old versions of the library */
51 { TIFFTAG_SUBFILETYPE, 1, 1, TIFF_SHORT, FIELD_SUBFILETYPE,
52 1, 0, "SubfileType" },
53 { TIFFTAG_OSUBFILETYPE, 1, 1, TIFF_SHORT, FIELD_SUBFILETYPE,
54 1, 0, "OldSubfileType" },
55 { TIFFTAG_IMAGEWIDTH, 1, 1, TIFF_LONG, FIELD_IMAGEDIMENSIONS,
56 0, 0, "ImageWidth" },
57 { TIFFTAG_IMAGEWIDTH, 1, 1, TIFF_SHORT, FIELD_IMAGEDIMENSIONS,
58 0, 0, "ImageWidth" },
59 { TIFFTAG_IMAGELENGTH, 1, 1, TIFF_LONG, FIELD_IMAGEDIMENSIONS,
60 1, 0, "ImageLength" },
61 { TIFFTAG_IMAGELENGTH, 1, 1, TIFF_SHORT, FIELD_IMAGEDIMENSIONS,
62 1, 0, "ImageLength" },
63 { TIFFTAG_BITSPERSAMPLE, -1,-1, TIFF_SHORT, FIELD_BITSPERSAMPLE,
64 0, 0, "BitsPerSample" },
65 /* XXX LONG for compatibility with some broken TIFF writers */
66 { TIFFTAG_BITSPERSAMPLE, -1,-1, TIFF_LONG, FIELD_BITSPERSAMPLE,
67 0, 0, "BitsPerSample" },
68 { TIFFTAG_COMPRESSION, -1, 1, TIFF_SHORT, FIELD_COMPRESSION,
69 0, 0, "Compression" },
70 /* XXX LONG for compatibility with some broken TIFF writers */
71 { TIFFTAG_COMPRESSION, -1, 1, TIFF_LONG, FIELD_COMPRESSION,
72 0, 0, "Compression" },
73 { TIFFTAG_PHOTOMETRIC, 1, 1, TIFF_SHORT, FIELD_PHOTOMETRIC,
74 0, 0, "PhotometricInterpretation" },
75 /* XXX LONG for compatibility with some broken TIFF writers */
76 { TIFFTAG_PHOTOMETRIC, 1, 1, TIFF_LONG, FIELD_PHOTOMETRIC,
77 0, 0, "PhotometricInterpretation" },
78 { TIFFTAG_THRESHHOLDING, 1, 1, TIFF_SHORT, FIELD_THRESHHOLDING,
79 1, 0, "Threshholding" },
80 { TIFFTAG_CELLWIDTH, 1, 1, TIFF_SHORT, FIELD_IGNORE,
81 1, 0, "CellWidth" },
82 { TIFFTAG_CELLLENGTH, 1, 1, TIFF_SHORT, FIELD_IGNORE,
83 1, 0, "CellLength" },
84 { TIFFTAG_FILLORDER, 1, 1, TIFF_SHORT, FIELD_FILLORDER,
85 0, 0, "FillOrder" },
86 { TIFFTAG_DOCUMENTNAME, -1,-1, TIFF_ASCII, FIELD_CUSTOM,
87 1, 0, "DocumentName" },
88 { TIFFTAG_IMAGEDESCRIPTION, -1,-1, TIFF_ASCII, FIELD_CUSTOM,
89 1, 0, "ImageDescription" },
90 { TIFFTAG_MAKE, -1,-1, TIFF_ASCII, FIELD_CUSTOM,
91 1, 0, "Make" },
92 { TIFFTAG_MODEL, -1,-1, TIFF_ASCII, FIELD_CUSTOM,
93 1, 0, "Model" },
94 { TIFFTAG_STRIPOFFSETS, -1,-1, TIFF_LONG, FIELD_STRIPOFFSETS,
95 0, 0, "StripOffsets" },
96 { TIFFTAG_STRIPOFFSETS, -1,-1, TIFF_SHORT, FIELD_STRIPOFFSETS,
97 0, 0, "StripOffsets" },
98 { TIFFTAG_ORIENTATION, 1, 1, TIFF_SHORT, FIELD_ORIENTATION,
99 0, 0, "Orientation" },
100 { TIFFTAG_SAMPLESPERPIXEL, 1, 1, TIFF_SHORT, FIELD_SAMPLESPERPIXEL,
101 0, 0, "SamplesPerPixel" },
102 { TIFFTAG_ROWSPERSTRIP, 1, 1, TIFF_LONG, FIELD_ROWSPERSTRIP,
103 0, 0, "RowsPerStrip" },
104 { TIFFTAG_ROWSPERSTRIP, 1, 1, TIFF_SHORT, FIELD_ROWSPERSTRIP,
105 0, 0, "RowsPerStrip" },
106 { TIFFTAG_STRIPBYTECOUNTS, -1,-1, TIFF_LONG, FIELD_STRIPBYTECOUNTS,
107 0, 0, "StripByteCounts" },
108 { TIFFTAG_STRIPBYTECOUNTS, -1,-1, TIFF_SHORT, FIELD_STRIPBYTECOUNTS,
109 0, 0, "StripByteCounts" },
110 { TIFFTAG_MINSAMPLEVALUE, -2,-1, TIFF_SHORT, FIELD_MINSAMPLEVALUE,
111 1, 0, "MinSampleValue" },
112 { TIFFTAG_MAXSAMPLEVALUE, -2,-1, TIFF_SHORT, FIELD_MAXSAMPLEVALUE,
113 1, 0, "MaxSampleValue" },
114 { TIFFTAG_XRESOLUTION, 1, 1, TIFF_RATIONAL, FIELD_RESOLUTION,
115 1, 0, "XResolution" },
116 { TIFFTAG_YRESOLUTION, 1, 1, TIFF_RATIONAL, FIELD_RESOLUTION,
117 1, 0, "YResolution" },
118 { TIFFTAG_PLANARCONFIG, 1, 1, TIFF_SHORT, FIELD_PLANARCONFIG,
119 0, 0, "PlanarConfiguration" },
120 { TIFFTAG_PAGENAME, -1,-1, TIFF_ASCII, FIELD_CUSTOM,
121 1, 0, "PageName" },
122 { TIFFTAG_XPOSITION, 1, 1, TIFF_RATIONAL, FIELD_POSITION,
123 1, 0, "XPosition" },
124 { TIFFTAG_YPOSITION, 1, 1, TIFF_RATIONAL, FIELD_POSITION,
125 1, 0, "YPosition" },
126 { TIFFTAG_FREEOFFSETS, -1,-1, TIFF_LONG, FIELD_IGNORE,
127 0, 0, "FreeOffsets" },
128 { TIFFTAG_FREEBYTECOUNTS, -1,-1, TIFF_LONG, FIELD_IGNORE,
129 0, 0, "FreeByteCounts" },
130 { TIFFTAG_GRAYRESPONSEUNIT, 1, 1, TIFF_SHORT, FIELD_IGNORE,
131 1, 0, "GrayResponseUnit" },
132 { TIFFTAG_GRAYRESPONSECURVE,-1,-1, TIFF_SHORT, FIELD_IGNORE,
133 1, 0, "GrayResponseCurve" },
134 { TIFFTAG_RESOLUTIONUNIT, 1, 1, TIFF_SHORT, FIELD_RESOLUTIONUNIT,
135 1, 0, "ResolutionUnit" },
136 { TIFFTAG_PAGENUMBER, 2, 2, TIFF_SHORT, FIELD_PAGENUMBER,
137 1, 0, "PageNumber" },
138 { TIFFTAG_COLORRESPONSEUNIT, 1, 1, TIFF_SHORT, FIELD_IGNORE,
139 1, 0, "ColorResponseUnit" },
140 { TIFFTAG_TRANSFERFUNCTION, -1,-1, TIFF_SHORT, FIELD_TRANSFERFUNCTION,
141 1, 0, "TransferFunction" },
142 { TIFFTAG_SOFTWARE, -1,-1, TIFF_ASCII, FIELD_CUSTOM,
143 1, 0, "Software" },
144 { TIFFTAG_DATETIME, 20,20, TIFF_ASCII, FIELD_CUSTOM,
145 1, 0, "DateTime" },
146 { TIFFTAG_ARTIST, -1,-1, TIFF_ASCII, FIELD_CUSTOM,
147 1, 0, "Artist" },
148 { TIFFTAG_HOSTCOMPUTER, -1,-1, TIFF_ASCII, FIELD_CUSTOM,
149 1, 0, "HostComputer" },
150 { TIFFTAG_WHITEPOINT, 2, 2, TIFF_RATIONAL, FIELD_CUSTOM,
151 1, 0, "WhitePoint" },
152 { TIFFTAG_PRIMARYCHROMATICITIES,6,6,TIFF_RATIONAL, FIELD_CUSTOM,
153 1, 0, "PrimaryChromaticities" },
154 { TIFFTAG_COLORMAP, -1,-1, TIFF_SHORT, FIELD_COLORMAP,
155 1, 0, "ColorMap" },
156 { TIFFTAG_HALFTONEHINTS, 2, 2, TIFF_SHORT, FIELD_HALFTONEHINTS,
157 1, 0, "HalftoneHints" },
158 { TIFFTAG_TILEWIDTH, 1, 1, TIFF_LONG, FIELD_TILEDIMENSIONS,
159 0, 0, "TileWidth" },
160 { TIFFTAG_TILEWIDTH, 1, 1, TIFF_SHORT, FIELD_TILEDIMENSIONS,
161 0, 0, "TileWidth" },
162 { TIFFTAG_TILELENGTH, 1, 1, TIFF_LONG, FIELD_TILEDIMENSIONS,
163 0, 0, "TileLength" },
164 { TIFFTAG_TILELENGTH, 1, 1, TIFF_SHORT, FIELD_TILEDIMENSIONS,
165 0, 0, "TileLength" },
166 { TIFFTAG_TILEOFFSETS, -1, 1, TIFF_LONG, FIELD_STRIPOFFSETS,
167 0, 0, "TileOffsets" },
168 { TIFFTAG_TILEBYTECOUNTS, -1, 1, TIFF_LONG, FIELD_STRIPBYTECOUNTS,
169 0, 0, "TileByteCounts" },
170 { TIFFTAG_TILEBYTECOUNTS, -1, 1, TIFF_SHORT, FIELD_STRIPBYTECOUNTS,
171 0, 0, "TileByteCounts" },
172 { TIFFTAG_SUBIFD, -1,-1, TIFF_IFD, FIELD_SUBIFD,
173 1, 1, "SubIFD" },
174 { TIFFTAG_SUBIFD, -1,-1, TIFF_LONG, FIELD_SUBIFD,
175 1, 1, "SubIFD" },
176 { TIFFTAG_INKSET, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
177 0, 0, "InkSet" },
178 { TIFFTAG_INKNAMES, -1,-1, TIFF_ASCII, FIELD_INKNAMES,
179 1, 1, "InkNames" },
180 { TIFFTAG_NUMBEROFINKS, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
181 1, 0, "NumberOfInks" },
182 { TIFFTAG_DOTRANGE, 2, 2, TIFF_SHORT, FIELD_CUSTOM,
183 0, 0, "DotRange" },
184 { TIFFTAG_DOTRANGE, 2, 2, TIFF_BYTE, FIELD_CUSTOM,
185 0, 0, "DotRange" },
186 { TIFFTAG_TARGETPRINTER, -1,-1, TIFF_ASCII, FIELD_CUSTOM,
187 1, 0, "TargetPrinter" },
188 { TIFFTAG_EXTRASAMPLES, -1,-1, TIFF_SHORT, FIELD_EXTRASAMPLES,
189 0, 1, "ExtraSamples" },
190 /* XXX for bogus Adobe Photoshop v2.5 files */
191 { TIFFTAG_EXTRASAMPLES, -1,-1, TIFF_BYTE, FIELD_EXTRASAMPLES,
192 0, 1, "ExtraSamples" },
193 { TIFFTAG_SAMPLEFORMAT, -1,-1, TIFF_SHORT, FIELD_SAMPLEFORMAT,
194 0, 0, "SampleFormat" },
195 { TIFFTAG_SMINSAMPLEVALUE, -2,-1, TIFF_ANY, FIELD_SMINSAMPLEVALUE,
196 1, 0, "SMinSampleValue" },
197 { TIFFTAG_SMAXSAMPLEVALUE, -2,-1, TIFF_ANY, FIELD_SMAXSAMPLEVALUE,
198 1, 0, "SMaxSampleValue" },
199 { TIFFTAG_CLIPPATH, -1, -3, TIFF_BYTE, FIELD_CUSTOM,
200 0, 1, "ClipPath" },
201 { TIFFTAG_XCLIPPATHUNITS, 1, 1, TIFF_SLONG, FIELD_CUSTOM,
202 0, 0, "XClipPathUnits" },
203 { TIFFTAG_XCLIPPATHUNITS, 1, 1, TIFF_SSHORT, FIELD_CUSTOM,
204 0, 0, "XClipPathUnits" },
205 { TIFFTAG_XCLIPPATHUNITS, 1, 1, TIFF_SBYTE, FIELD_CUSTOM,
206 0, 0, "XClipPathUnits" },
207 { TIFFTAG_YCLIPPATHUNITS, 1, 1, TIFF_SLONG, FIELD_CUSTOM,
208 0, 0, "YClipPathUnits" },
209 { TIFFTAG_YCLIPPATHUNITS, 1, 1, TIFF_SSHORT, FIELD_CUSTOM,
210 0, 0, "YClipPathUnits" },
211 { TIFFTAG_YCLIPPATHUNITS, 1, 1, TIFF_SBYTE, FIELD_CUSTOM,
212 0, 0, "YClipPathUnits" },
213 { TIFFTAG_YCBCRCOEFFICIENTS, 3, 3, TIFF_RATIONAL, FIELD_CUSTOM,
214 0, 0, "YCbCrCoefficients" },
215 { TIFFTAG_YCBCRSUBSAMPLING, 2, 2, TIFF_SHORT, FIELD_YCBCRSUBSAMPLING,
216 0, 0, "YCbCrSubsampling" },
217 { TIFFTAG_YCBCRPOSITIONING, 1, 1, TIFF_SHORT, FIELD_YCBCRPOSITIONING,
218 0, 0, "YCbCrPositioning" },
219 { TIFFTAG_REFERENCEBLACKWHITE, 6, 6, TIFF_RATIONAL, FIELD_CUSTOM,
220 1, 0, "ReferenceBlackWhite" },
221 /* XXX temporarily accept LONG for backwards compatibility */
222 { TIFFTAG_REFERENCEBLACKWHITE, 6, 6, TIFF_LONG, FIELD_CUSTOM,
223 1, 0, "ReferenceBlackWhite" },
224 { TIFFTAG_XMLPACKET, -3,-3, TIFF_BYTE, FIELD_CUSTOM,
225 0, 1, "XMLPacket" },
226 /* begin SGI tags */
227 { TIFFTAG_MATTEING, 1, 1, TIFF_SHORT, FIELD_EXTRASAMPLES,
228 0, 0, "Matteing" },
229 { TIFFTAG_DATATYPE, -2,-1, TIFF_SHORT, FIELD_SAMPLEFORMAT,
230 0, 0, "DataType" },
231 { TIFFTAG_IMAGEDEPTH, 1, 1, TIFF_LONG, FIELD_IMAGEDEPTH,
232 0, 0, "ImageDepth" },
233 { TIFFTAG_IMAGEDEPTH, 1, 1, TIFF_SHORT, FIELD_IMAGEDEPTH,
234 0, 0, "ImageDepth" },
235 { TIFFTAG_TILEDEPTH, 1, 1, TIFF_LONG, FIELD_TILEDEPTH,
236 0, 0, "TileDepth" },
237 { TIFFTAG_TILEDEPTH, 1, 1, TIFF_SHORT, FIELD_TILEDEPTH,
238 0, 0, "TileDepth" },
239 /* end SGI tags */
240 /* begin Pixar tags */
241 { TIFFTAG_PIXAR_IMAGEFULLWIDTH, 1, 1, TIFF_LONG, FIELD_CUSTOM,
242 1, 0, "ImageFullWidth" },
243 { TIFFTAG_PIXAR_IMAGEFULLLENGTH, 1, 1, TIFF_LONG, FIELD_CUSTOM,
244 1, 0, "ImageFullLength" },
245 { TIFFTAG_PIXAR_TEXTUREFORMAT, -1, -1, TIFF_ASCII, FIELD_CUSTOM,
246 1, 0, "TextureFormat" },
247 { TIFFTAG_PIXAR_WRAPMODES, -1, -1, TIFF_ASCII, FIELD_CUSTOM,
248 1, 0, "TextureWrapModes" },
249 { TIFFTAG_PIXAR_FOVCOT, 1, 1, TIFF_FLOAT, FIELD_CUSTOM,
250 1, 0, "FieldOfViewCotangent" },
251 { TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN, 16,16, TIFF_FLOAT,
252 FIELD_CUSTOM, 1, 0, "MatrixWorldToScreen" },
253 { TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA, 16,16, TIFF_FLOAT,
254 FIELD_CUSTOM, 1, 0, "MatrixWorldToCamera" },
255 { TIFFTAG_COPYRIGHT, -1, -1, TIFF_ASCII, FIELD_CUSTOM,
256 1, 0, "Copyright" },
257 /* end Pixar tags */
258 { TIFFTAG_RICHTIFFIPTC, -3, -3, TIFF_LONG, FIELD_CUSTOM,
259 0, 1, "RichTIFFIPTC" },
260 { TIFFTAG_PHOTOSHOP, -3, -3, TIFF_BYTE, FIELD_CUSTOM,
261 0, 1, "Photoshop" },
262 { TIFFTAG_EXIFIFD, 1, 1, TIFF_LONG, FIELD_CUSTOM,
263 0, 0, "EXIFIFDOffset" },
264 { TIFFTAG_ICCPROFILE, -3, -3, TIFF_UNDEFINED, FIELD_CUSTOM,
265 0, 1, "ICC Profile" },
266 { TIFFTAG_GPSIFD, 1, 1, TIFF_LONG, FIELD_CUSTOM,
267 0, 0, "GPSIFDOffset" },
268 { TIFFTAG_STONITS, 1, 1, TIFF_DOUBLE, FIELD_CUSTOM,
269 0, 0, "StoNits" },
270 { TIFFTAG_INTEROPERABILITYIFD, 1, 1, TIFF_LONG, FIELD_CUSTOM,
271 0, 0, "InteroperabilityIFDOffset" },
272 /* begin DNG tags */
273 { TIFFTAG_DNGVERSION, 4, 4, TIFF_BYTE, FIELD_CUSTOM,
274 0, 0, "DNGVersion" },
275 { TIFFTAG_DNGBACKWARDVERSION, 4, 4, TIFF_BYTE, FIELD_CUSTOM,
276 0, 0, "DNGBackwardVersion" },
277 { TIFFTAG_UNIQUECAMERAMODEL, -1, -1, TIFF_ASCII, FIELD_CUSTOM,
278 1, 0, "UniqueCameraModel" },
279 { TIFFTAG_LOCALIZEDCAMERAMODEL, -1, -1, TIFF_ASCII, FIELD_CUSTOM,
280 1, 0, "LocalizedCameraModel" },
281 { TIFFTAG_LOCALIZEDCAMERAMODEL, -1, -1, TIFF_BYTE, FIELD_CUSTOM,
282 1, 1, "LocalizedCameraModel" },
283 { TIFFTAG_CFAPLANECOLOR, -1, -1, TIFF_BYTE, FIELD_CUSTOM,
284 0, 1, "CFAPlaneColor" },
285 { TIFFTAG_CFALAYOUT, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
286 0, 0, "CFALayout" },
287 { TIFFTAG_LINEARIZATIONTABLE, -1, -1, TIFF_SHORT, FIELD_CUSTOM,
288 0, 1, "LinearizationTable" },
289 { TIFFTAG_BLACKLEVELREPEATDIM, 2, 2, TIFF_SHORT, FIELD_CUSTOM,
290 0, 0, "BlackLevelRepeatDim" },
291 { TIFFTAG_BLACKLEVEL, -1, -1, TIFF_LONG, FIELD_CUSTOM,
292 0, 1, "BlackLevel" },
293 { TIFFTAG_BLACKLEVEL, -1, -1, TIFF_SHORT, FIELD_CUSTOM,
294 0, 1, "BlackLevel" },
295 { TIFFTAG_BLACKLEVEL, -1, -1, TIFF_RATIONAL, FIELD_CUSTOM,
296 0, 1, "BlackLevel" },
297 { TIFFTAG_BLACKLEVELDELTAH, -1, -1, TIFF_SRATIONAL, FIELD_CUSTOM,
298 0, 1, "BlackLevelDeltaH" },
299 { TIFFTAG_BLACKLEVELDELTAV, -1, -1, TIFF_SRATIONAL, FIELD_CUSTOM,
300 0, 1, "BlackLevelDeltaV" },
301 { TIFFTAG_WHITELEVEL, -2, -2, TIFF_LONG, FIELD_CUSTOM,
302 0, 0, "WhiteLevel" },
303 { TIFFTAG_WHITELEVEL, -2, -2, TIFF_SHORT, FIELD_CUSTOM,
304 0, 0, "WhiteLevel" },
305 { TIFFTAG_DEFAULTSCALE, 2, 2, TIFF_RATIONAL, FIELD_CUSTOM,
306 0, 0, "DefaultScale" },
307 { TIFFTAG_BESTQUALITYSCALE, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
308 0, 0, "BestQualityScale" },
309 { TIFFTAG_DEFAULTCROPORIGIN, 2, 2, TIFF_LONG, FIELD_CUSTOM,
310 0, 0, "DefaultCropOrigin" },
311 { TIFFTAG_DEFAULTCROPORIGIN, 2, 2, TIFF_SHORT, FIELD_CUSTOM,
312 0, 0, "DefaultCropOrigin" },
313 { TIFFTAG_DEFAULTCROPORIGIN, 2, 2, TIFF_RATIONAL, FIELD_CUSTOM,
314 0, 0, "DefaultCropOrigin" },
315 { TIFFTAG_DEFAULTCROPSIZE, 2, 2, TIFF_LONG, FIELD_CUSTOM,
316 0, 0, "DefaultCropSize" },
317 { TIFFTAG_DEFAULTCROPSIZE, 2, 2, TIFF_SHORT, FIELD_CUSTOM,
318 0, 0, "DefaultCropSize" },
319 { TIFFTAG_DEFAULTCROPSIZE, 2, 2, TIFF_RATIONAL, FIELD_CUSTOM,
320 0, 0, "DefaultCropSize" },
321 { TIFFTAG_COLORMATRIX1, -1, -1, TIFF_SRATIONAL, FIELD_CUSTOM,
322 0, 1, "ColorMatrix1" },
323 { TIFFTAG_COLORMATRIX2, -1, -1, TIFF_SRATIONAL, FIELD_CUSTOM,
324 0, 1, "ColorMatrix2" },
325 { TIFFTAG_CAMERACALIBRATION1, -1, -1, TIFF_SRATIONAL, FIELD_CUSTOM,
326 0, 1, "CameraCalibration1" },
327 { TIFFTAG_CAMERACALIBRATION2, -1, -1, TIFF_SRATIONAL, FIELD_CUSTOM,
328 0, 1, "CameraCalibration2" },
329 { TIFFTAG_REDUCTIONMATRIX1, -1, -1, TIFF_SRATIONAL, FIELD_CUSTOM,
330 0, 1, "ReductionMatrix1" },
331 { TIFFTAG_REDUCTIONMATRIX2, -1, -1, TIFF_SRATIONAL, FIELD_CUSTOM,
332 0, 1, "ReductionMatrix2" },
333 { TIFFTAG_ANALOGBALANCE, -1, -1, TIFF_RATIONAL, FIELD_CUSTOM,
334 0, 1, "AnalogBalance" },
335 { TIFFTAG_ASSHOTNEUTRAL, -1, -1, TIFF_SHORT, FIELD_CUSTOM,
336 0, 1, "AsShotNeutral" },
337 { TIFFTAG_ASSHOTNEUTRAL, -1, -1, TIFF_RATIONAL, FIELD_CUSTOM,
338 0, 1, "AsShotNeutral" },
339 { TIFFTAG_ASSHOTWHITEXY, 2, 2, TIFF_RATIONAL, FIELD_CUSTOM,
340 0, 0, "AsShotWhiteXY" },
341 { TIFFTAG_BASELINEEXPOSURE, 1, 1, TIFF_SRATIONAL, FIELD_CUSTOM,
342 0, 0, "BaselineExposure" },
343 { TIFFTAG_BASELINENOISE, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
344 0, 0, "BaselineNoise" },
345 { TIFFTAG_BASELINESHARPNESS, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
346 0, 0, "BaselineSharpness" },
347 { TIFFTAG_BAYERGREENSPLIT, 1, 1, TIFF_LONG, FIELD_CUSTOM,
348 0, 0, "BayerGreenSplit" },
349 { TIFFTAG_LINEARRESPONSELIMIT, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
350 0, 0, "LinearResponseLimit" },
351 { TIFFTAG_CAMERASERIALNUMBER, -1, -1, TIFF_ASCII, FIELD_CUSTOM,
352 1, 0, "CameraSerialNumber" },
353 { TIFFTAG_LENSINFO, 4, 4, TIFF_RATIONAL, FIELD_CUSTOM,
354 0, 0, "LensInfo" },
355 { TIFFTAG_CHROMABLURRADIUS, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
356 0, 0, "ChromaBlurRadius" },
357 { TIFFTAG_ANTIALIASSTRENGTH, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
358 0, 0, "AntiAliasStrength" },
359 { TIFFTAG_SHADOWSCALE, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
360 0, 0, "ShadowScale" },
361 { TIFFTAG_DNGPRIVATEDATA, -1, -1, TIFF_BYTE, FIELD_CUSTOM,
362 0, 1, "DNGPrivateData" },
363 { TIFFTAG_MAKERNOTESAFETY, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
364 0, 0, "MakerNoteSafety" },
365 { TIFFTAG_CALIBRATIONILLUMINANT1, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
366 0, 0, "CalibrationIlluminant1" },
367 { TIFFTAG_CALIBRATIONILLUMINANT2, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
368 0, 0, "CalibrationIlluminant2" },
369 { TIFFTAG_RAWDATAUNIQUEID, 16, 16, TIFF_BYTE, FIELD_CUSTOM,
370 0, 0, "RawDataUniqueID" },
371 { TIFFTAG_ORIGINALRAWFILENAME, -1, -1, TIFF_ASCII, FIELD_CUSTOM,
372 1, 0, "OriginalRawFileName" },
373 { TIFFTAG_ORIGINALRAWFILENAME, -1, -1, TIFF_BYTE, FIELD_CUSTOM,
374 1, 1, "OriginalRawFileName" },
375 { TIFFTAG_ORIGINALRAWFILEDATA, -1, -1, TIFF_UNDEFINED, FIELD_CUSTOM,
376 0, 1, "OriginalRawFileData" },
377 { TIFFTAG_ACTIVEAREA, 4, 4, TIFF_LONG, FIELD_CUSTOM,
378 0, 0, "ActiveArea" },
379 { TIFFTAG_ACTIVEAREA, 4, 4, TIFF_SHORT, FIELD_CUSTOM,
380 0, 0, "ActiveArea" },
381 { TIFFTAG_MASKEDAREAS, -1, -1, TIFF_LONG, FIELD_CUSTOM,
382 0, 1, "MaskedAreas" },
383 { TIFFTAG_ASSHOTICCPROFILE, -1, -1, TIFF_UNDEFINED, FIELD_CUSTOM,
384 0, 1, "AsShotICCProfile" },
385 { TIFFTAG_ASSHOTPREPROFILEMATRIX, -1, -1, TIFF_SRATIONAL, FIELD_CUSTOM,
386 0, 1, "AsShotPreProfileMatrix" },
387 { TIFFTAG_CURRENTICCPROFILE, -1, -1, TIFF_UNDEFINED, FIELD_CUSTOM,
388 0, 1, "CurrentICCProfile" },
389 { TIFFTAG_CURRENTPREPROFILEMATRIX, -1, -1, TIFF_SRATIONAL, FIELD_CUSTOM,
390 0, 1, "CurrentPreProfileMatrix" },
391 /* end DNG tags */
392 };
393
394 static const TIFFFieldInfo
395 exifFieldInfo[] = {
396 { EXIFTAG_EXPOSURETIME, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
397 1, 0, "ExposureTime" },
398 { EXIFTAG_FNUMBER, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
399 1, 0, "FNumber" },
400 { EXIFTAG_EXPOSUREPROGRAM, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
401 1, 0, "ExposureProgram" },
402 { EXIFTAG_SPECTRALSENSITIVITY, -1, -1, TIFF_ASCII, FIELD_CUSTOM,
403 1, 0, "SpectralSensitivity" },
404 { EXIFTAG_ISOSPEEDRATINGS, -1, -1, TIFF_SHORT, FIELD_CUSTOM,
405 1, 1, "ISOSpeedRatings" },
406 { EXIFTAG_OECF, -1, -1, TIFF_UNDEFINED, FIELD_CUSTOM,
407 1, 1, "OptoelectricConversionFactor" },
408 { EXIFTAG_EXIFVERSION, 4, 4, TIFF_UNDEFINED, FIELD_CUSTOM,
409 1, 0, "ExifVersion" },
410 { EXIFTAG_DATETIMEORIGINAL, 20, 20, TIFF_ASCII, FIELD_CUSTOM,
411 1, 0, "DateTimeOriginal" },
412 { EXIFTAG_DATETIMEDIGITIZED, 20, 20, TIFF_ASCII, FIELD_CUSTOM,
413 1, 0, "DateTimeDigitized" },
414 { EXIFTAG_COMPONENTSCONFIGURATION, 4, 4, TIFF_UNDEFINED, FIELD_CUSTOM,
415 1, 0, "ComponentsConfiguration" },
416 { EXIFTAG_COMPRESSEDBITSPERPIXEL, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
417 1, 0, "CompressedBitsPerPixel" },
418 { EXIFTAG_SHUTTERSPEEDVALUE, 1, 1, TIFF_SRATIONAL, FIELD_CUSTOM,
419 1, 0, "ShutterSpeedValue" },
420 { EXIFTAG_APERTUREVALUE, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
421 1, 0, "ApertureValue" },
422 { EXIFTAG_BRIGHTNESSVALUE, 1, 1, TIFF_SRATIONAL, FIELD_CUSTOM,
423 1, 0, "BrightnessValue" },
424 { EXIFTAG_EXPOSUREBIASVALUE, 1, 1, TIFF_SRATIONAL, FIELD_CUSTOM,
425 1, 0, "ExposureBiasValue" },
426 { EXIFTAG_MAXAPERTUREVALUE, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
427 1, 0, "MaxApertureValue" },
428 { EXIFTAG_SUBJECTDISTANCE, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
429 1, 0, "SubjectDistance" },
430 { EXIFTAG_METERINGMODE, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
431 1, 0, "MeteringMode" },
432 { EXIFTAG_LIGHTSOURCE, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
433 1, 0, "LightSource" },
434 { EXIFTAG_FLASH, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
435 1, 0, "Flash" },
436 { EXIFTAG_FOCALLENGTH, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
437 1, 0, "FocalLength" },
438 { EXIFTAG_SUBJECTAREA, -1, -1, TIFF_SHORT, FIELD_CUSTOM,
439 1, 1, "SubjectArea" },
440 { EXIFTAG_MAKERNOTE, -1, -1, TIFF_UNDEFINED, FIELD_CUSTOM,
441 1, 1, "MakerNote" },
442 { EXIFTAG_USERCOMMENT, -1, -1, TIFF_UNDEFINED, FIELD_CUSTOM,
443 1, 1, "UserComment" },
444 { EXIFTAG_SUBSECTIME, -1, -1, TIFF_ASCII, FIELD_CUSTOM,
445 1, 0, "SubSecTime" },
446 { EXIFTAG_SUBSECTIMEORIGINAL, -1, -1, TIFF_ASCII, FIELD_CUSTOM,
447 1, 0, "SubSecTimeOriginal" },
448 { EXIFTAG_SUBSECTIMEDIGITIZED,-1, -1, TIFF_ASCII, FIELD_CUSTOM,
449 1, 0, "SubSecTimeDigitized" },
450 { EXIFTAG_FLASHPIXVERSION, 4, 4, TIFF_UNDEFINED, FIELD_CUSTOM,
451 1, 0, "FlashpixVersion" },
452 { EXIFTAG_PIXELXDIMENSION, 1, 1, TIFF_LONG, FIELD_CUSTOM,
453 1, 0, "PixelXDimension" },
454 { EXIFTAG_PIXELXDIMENSION, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
455 1, 0, "PixelXDimension" },
456 { EXIFTAG_PIXELYDIMENSION, 1, 1, TIFF_LONG, FIELD_CUSTOM,
457 1, 0, "PixelYDimension" },
458 { EXIFTAG_PIXELYDIMENSION, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
459 1, 0, "PixelYDimension" },
460 { EXIFTAG_RELATEDSOUNDFILE, 13, 13, TIFF_ASCII, FIELD_CUSTOM,
461 1, 0, "RelatedSoundFile" },
462 { EXIFTAG_FLASHENERGY, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
463 1, 0, "FlashEnergy" },
464 { EXIFTAG_SPATIALFREQUENCYRESPONSE, -1, -1, TIFF_UNDEFINED, FIELD_CUSTOM,
465 1, 1, "SpatialFrequencyResponse" },
466 { EXIFTAG_FOCALPLANEXRESOLUTION, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
467 1, 0, "FocalPlaneXResolution" },
468 { EXIFTAG_FOCALPLANEYRESOLUTION, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
469 1, 0, "FocalPlaneYResolution" },
470 { EXIFTAG_FOCALPLANERESOLUTIONUNIT, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
471 1, 0, "FocalPlaneResolutionUnit" },
472 { EXIFTAG_SUBJECTLOCATION, 2, 2, TIFF_SHORT, FIELD_CUSTOM,
473 1, 0, "SubjectLocation" },
474 { EXIFTAG_EXPOSUREINDEX, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
475 1, 0, "ExposureIndex" },
476 { EXIFTAG_SENSINGMETHOD, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
477 1, 0, "SensingMethod" },
478 { EXIFTAG_FILESOURCE, 1, 1, TIFF_UNDEFINED, FIELD_CUSTOM,
479 1, 0, "FileSource" },
480 { EXIFTAG_SCENETYPE, 1, 1, TIFF_UNDEFINED, FIELD_CUSTOM,
481 1, 0, "SceneType" },
482 { EXIFTAG_CFAPATTERN, -1, -1, TIFF_UNDEFINED, FIELD_CUSTOM,
483 1, 1, "CFAPattern" },
484 { EXIFTAG_CUSTOMRENDERED, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
485 1, 0, "CustomRendered" },
486 { EXIFTAG_EXPOSUREMODE, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
487 1, 0, "ExposureMode" },
488 { EXIFTAG_WHITEBALANCE, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
489 1, 0, "WhiteBalance" },
490 { EXIFTAG_DIGITALZOOMRATIO, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
491 1, 0, "DigitalZoomRatio" },
492 { EXIFTAG_FOCALLENGTHIN35MMFILM, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
493 1, 0, "FocalLengthIn35mmFilm" },
494 { EXIFTAG_SCENECAPTURETYPE, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
495 1, 0, "SceneCaptureType" },
496 { EXIFTAG_GAINCONTROL, 1, 1, TIFF_RATIONAL, FIELD_CUSTOM,
497 1, 0, "GainControl" },
498 { EXIFTAG_CONTRAST, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
499 1, 0, "Contrast" },
500 { EXIFTAG_SATURATION, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
501 1, 0, "Saturation" },
502 { EXIFTAG_SHARPNESS, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
503 1, 0, "Sharpness" },
504 { EXIFTAG_DEVICESETTINGDESCRIPTION, -1, -1, TIFF_UNDEFINED, FIELD_CUSTOM,
505 1, 1, "DeviceSettingDescription" },
506 { EXIFTAG_SUBJECTDISTANCERANGE, 1, 1, TIFF_SHORT, FIELD_CUSTOM,
507 1, 0, "SubjectDistanceRange" },
508 { EXIFTAG_IMAGEUNIQUEID, 33, 33, TIFF_ASCII, FIELD_CUSTOM,
509 1, 0, "ImageUniqueID" }
510 };
511
512 const TIFFFieldInfo *
_TIFFGetFieldInfo(size_t * size)513 _TIFFGetFieldInfo(size_t *size)
514 {
515 *size = TIFFArrayCount(tiffFieldInfo);
516 return tiffFieldInfo;
517 }
518
519 const TIFFFieldInfo *
_TIFFGetExifFieldInfo(size_t * size)520 _TIFFGetExifFieldInfo(size_t *size)
521 {
522 *size = TIFFArrayCount(exifFieldInfo);
523 return exifFieldInfo;
524 }
525
526 void
_TIFFSetupFieldInfo(TIFF * tif,const TIFFFieldInfo info[],size_t n)527 _TIFFSetupFieldInfo(TIFF* tif, const TIFFFieldInfo info[], size_t n)
528 {
529 if (tif->tif_fieldinfo) {
530 size_t i;
531
532 for (i = 0; i < tif->tif_nfields; i++)
533 {
534 TIFFFieldInfo *fld = tif->tif_fieldinfo[i];
535 if (fld->field_bit == FIELD_CUSTOM &&
536 strncmp("Tag ", fld->field_name, 4) == 0) {
537 _TIFFfree(fld->field_name);
538 _TIFFfree(fld);
539 }
540 }
541
542 _TIFFfree(tif->tif_fieldinfo);
543 tif->tif_nfields = 0;
544 }
545 _TIFFMergeFieldInfo(tif, info, n);
546 }
547
548 static int
tagCompare(const void * a,const void * b)549 tagCompare(const void* a, const void* b)
550 {
551 const TIFFFieldInfo* ta = *(const TIFFFieldInfo**) a;
552 const TIFFFieldInfo* tb = *(const TIFFFieldInfo**) b;
553 /* NB: be careful of return values for 16-bit platforms */
554 if (ta->field_tag != tb->field_tag)
555 return (ta->field_tag < tb->field_tag ? -1 : 1);
556 else
557 return ((int)tb->field_type - (int)ta->field_type);
558 }
559
560 static int
tagNameCompare(const void * a,const void * b)561 tagNameCompare(const void* a, const void* b)
562 {
563 const TIFFFieldInfo* ta = *(const TIFFFieldInfo**) a;
564 const TIFFFieldInfo* tb = *(const TIFFFieldInfo**) b;
565
566 return strcmp(ta->field_name, tb->field_name);
567 }
568
569 void
_TIFFMergeFieldInfo(TIFF * tif,const TIFFFieldInfo info[],int n)570 _TIFFMergeFieldInfo(TIFF* tif, const TIFFFieldInfo info[], int n)
571 {
572 TIFFFieldInfo** tp;
573 int i;
574
575 tif->tif_foundfield = NULL;
576
577 if (tif->tif_nfields > 0) {
578 tif->tif_fieldinfo = (TIFFFieldInfo**)
579 _TIFFrealloc(tif->tif_fieldinfo,
580 (tif->tif_nfields+n) * sizeof (TIFFFieldInfo*));
581 } else {
582 tif->tif_fieldinfo = (TIFFFieldInfo**)
583 _TIFFmalloc(n * sizeof (TIFFFieldInfo*));
584 }
585 assert(tif->tif_fieldinfo != NULL);
586 tp = tif->tif_fieldinfo + tif->tif_nfields;
587 for (i = 0; i < n; i++)
588 *tp++ = (TIFFFieldInfo*) (info + i); /* XXX */
589
590 /* Sort the field info by tag number */
591 qsort(tif->tif_fieldinfo, tif->tif_nfields += n,
592 sizeof (TIFFFieldInfo*), tagCompare);
593 }
594
595 void
_TIFFPrintFieldInfo(TIFF * tif,FILE * fd)596 _TIFFPrintFieldInfo(TIFF* tif, FILE* fd)
597 {
598 size_t i;
599
600 fprintf(fd, "%s: \n", tif->tif_name);
601 for (i = 0; i < tif->tif_nfields; i++) {
602 const TIFFFieldInfo* fip = tif->tif_fieldinfo[i];
603 fprintf(fd, "field[%2d] %5lu, %2d, %2d, %d, %2d, %5s, %5s, %s\n"
604 , (int)i
605 , (unsigned long) fip->field_tag
606 , fip->field_readcount, fip->field_writecount
607 , fip->field_type
608 , fip->field_bit
609 , fip->field_oktochange ? "TRUE" : "FALSE"
610 , fip->field_passcount ? "TRUE" : "FALSE"
611 , fip->field_name
612 );
613 }
614 }
615
616 /*
617 * Return size of TIFFDataType in bytes
618 */
619 int
TIFFDataWidth(TIFFDataType type)620 TIFFDataWidth(TIFFDataType type)
621 {
622 switch(type)
623 {
624 case 0: /* nothing */
625 case 1: /* TIFF_BYTE */
626 case 2: /* TIFF_ASCII */
627 case 6: /* TIFF_SBYTE */
628 case 7: /* TIFF_UNDEFINED */
629 return 1;
630 case 3: /* TIFF_SHORT */
631 case 8: /* TIFF_SSHORT */
632 return 2;
633 case 4: /* TIFF_LONG */
634 case 9: /* TIFF_SLONG */
635 case 11: /* TIFF_FLOAT */
636 case 13: /* TIFF_IFD */
637 return 4;
638 case 5: /* TIFF_RATIONAL */
639 case 10: /* TIFF_SRATIONAL */
640 case 12: /* TIFF_DOUBLE */
641 return 8;
642 default:
643 return 0; /* will return 0 for unknown types */
644 }
645 }
646
647 /*
648 * Return size of TIFFDataType in bytes.
649 *
650 * XXX: We need a separate function to determine the space needed
651 * to store the value. For TIFF_RATIONAL values TIFFDataWidth() returns 8,
652 * but we use 4-byte float to represent rationals.
653 */
654 int
_TIFFDataSize(TIFFDataType type)655 _TIFFDataSize(TIFFDataType type)
656 {
657 switch (type) {
658 case TIFF_BYTE:
659 case TIFF_SBYTE:
660 case TIFF_ASCII:
661 case TIFF_UNDEFINED:
662 return 1;
663 case TIFF_SHORT:
664 case TIFF_SSHORT:
665 return 2;
666 case TIFF_LONG:
667 case TIFF_SLONG:
668 case TIFF_FLOAT:
669 case TIFF_IFD:
670 case TIFF_RATIONAL:
671 case TIFF_SRATIONAL:
672 return 4;
673 case TIFF_DOUBLE:
674 return 8;
675 default:
676 return 0;
677 }
678 }
679
680 /*
681 * Return nearest TIFFDataType to the sample type of an image.
682 */
683 TIFFDataType
_TIFFSampleToTagType(TIFF * tif)684 _TIFFSampleToTagType(TIFF* tif)
685 {
686 uint32 bps = TIFFhowmany8(tif->tif_dir.td_bitspersample);
687
688 switch (tif->tif_dir.td_sampleformat) {
689 case SAMPLEFORMAT_IEEEFP:
690 return (bps == 4 ? TIFF_FLOAT : TIFF_DOUBLE);
691 case SAMPLEFORMAT_INT:
692 return (bps <= 1 ? TIFF_SBYTE :
693 bps <= 2 ? TIFF_SSHORT : TIFF_SLONG);
694 case SAMPLEFORMAT_UINT:
695 return (bps <= 1 ? TIFF_BYTE :
696 bps <= 2 ? TIFF_SHORT : TIFF_LONG);
697 case SAMPLEFORMAT_VOID:
698 return (TIFF_UNDEFINED);
699 }
700 /*NOTREACHED*/
701 return (TIFF_UNDEFINED);
702 }
703
704 const TIFFFieldInfo*
_TIFFFindFieldInfo(TIFF * tif,ttag_t tag,TIFFDataType dt)705 _TIFFFindFieldInfo(TIFF* tif, ttag_t tag, TIFFDataType dt)
706 {
707 int i, n;
708
709 if (tif->tif_foundfield && tif->tif_foundfield->field_tag == tag &&
710 (dt == TIFF_ANY || dt == tif->tif_foundfield->field_type))
711 return (tif->tif_foundfield);
712 /* NB: use sorted search (e.g. binary search) */
713 if(dt != TIFF_ANY) {
714 TIFFFieldInfo key = {0, 0, 0, TIFF_NOTYPE, 0, 0, 0, 0};
715 TIFFFieldInfo* pkey = &key;
716 const TIFFFieldInfo **ret;
717
718 key.field_tag = tag;
719 key.field_type = dt;
720
721 ret = (const TIFFFieldInfo **) bsearch(&pkey,
722 tif->tif_fieldinfo,
723 tif->tif_nfields,
724 sizeof(TIFFFieldInfo *),
725 tagCompare);
726 return (ret) ? (*ret) : NULL;
727 } else for (i = 0, n = tif->tif_nfields; i < n; i++) {
728 const TIFFFieldInfo* fip = tif->tif_fieldinfo[i];
729 if (fip->field_tag == tag &&
730 (dt == TIFF_ANY || fip->field_type == dt))
731 return (tif->tif_foundfield = fip);
732 }
733 return ((const TIFFFieldInfo *)0);
734 }
735
736 const TIFFFieldInfo*
_TIFFFindFieldInfoByName(TIFF * tif,const char * field_name,TIFFDataType dt)737 _TIFFFindFieldInfoByName(TIFF* tif, const char *field_name, TIFFDataType dt)
738 {
739 int i, n;
740
741 if (tif->tif_foundfield
742 && streq(tif->tif_foundfield->field_name, field_name)
743 && (dt == TIFF_ANY || dt == tif->tif_foundfield->field_type))
744 return (tif->tif_foundfield);
745 /* NB: use sorted search (e.g. binary search) */
746 if(dt != TIFF_ANY) {
747 TIFFFieldInfo key = {0, 0, 0, TIFF_NOTYPE, 0, 0, 0, 0};
748 TIFFFieldInfo* pkey = &key;
749 const TIFFFieldInfo **ret;
750
751 key.field_name = (char *)field_name;
752 key.field_type = dt;
753
754 ret = (const TIFFFieldInfo **) lfind(&pkey,
755 tif->tif_fieldinfo,
756 &tif->tif_nfields,
757 sizeof(TIFFFieldInfo *),
758 tagNameCompare);
759 return (ret) ? (*ret) : NULL;
760 } else
761 for (i = 0, n = tif->tif_nfields; i < n; i++) {
762 const TIFFFieldInfo* fip = tif->tif_fieldinfo[i];
763 if (streq(fip->field_name, field_name) &&
764 (dt == TIFF_ANY || fip->field_type == dt))
765 return (tif->tif_foundfield = fip);
766 }
767 return ((const TIFFFieldInfo *)0);
768 }
769
770 const TIFFFieldInfo*
_TIFFFieldWithTag(TIFF * tif,ttag_t tag)771 _TIFFFieldWithTag(TIFF* tif, ttag_t tag)
772 {
773 const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY);
774 if (!fip) {
775 TIFFErrorExt(tif->tif_clientdata, "TIFFFieldWithTag",
776 "Internal error, unknown tag 0x%x",
777 (unsigned int) tag);
778 assert(fip != NULL);
779 /*NOTREACHED*/
780 }
781 return (fip);
782 }
783
784 const TIFFFieldInfo*
_TIFFFieldWithName(TIFF * tif,const char * field_name)785 _TIFFFieldWithName(TIFF* tif, const char *field_name)
786 {
787 const TIFFFieldInfo* fip =
788 _TIFFFindFieldInfoByName(tif, field_name, TIFF_ANY);
789 if (!fip) {
790 TIFFErrorExt(tif->tif_clientdata, "TIFFFieldWithName",
791 "Internal error, unknown tag %s", field_name);
792 assert(fip != NULL);
793 /*NOTREACHED*/
794 }
795 return (fip);
796 }
797
798 const TIFFFieldInfo*
_TIFFFindOrRegisterFieldInfo(TIFF * tif,ttag_t tag,TIFFDataType dt)799 _TIFFFindOrRegisterFieldInfo( TIFF *tif, ttag_t tag, TIFFDataType dt )
800
801 {
802 const TIFFFieldInfo *fld;
803
804 fld = _TIFFFindFieldInfo( tif, tag, dt );
805 if( fld == NULL )
806 {
807 fld = _TIFFCreateAnonFieldInfo( tif, tag, dt );
808 _TIFFMergeFieldInfo( tif, fld, 1 );
809 }
810
811 return fld;
812 }
813
814 TIFFFieldInfo*
_TIFFCreateAnonFieldInfo(TIFF * tif,ttag_t tag,TIFFDataType field_type)815 _TIFFCreateAnonFieldInfo(TIFF *tif, ttag_t tag, TIFFDataType field_type)
816 {
817 TIFFFieldInfo *fld;
818 (void) tif;
819
820 fld = (TIFFFieldInfo *) _TIFFmalloc(sizeof (TIFFFieldInfo));
821 if (fld == NULL)
822 return NULL;
823 _TIFFmemset( fld, 0, sizeof(TIFFFieldInfo) );
824
825 fld->field_tag = tag;
826 fld->field_readcount = TIFF_VARIABLE;
827 fld->field_writecount = TIFF_VARIABLE;
828 fld->field_type = field_type;
829 fld->field_bit = FIELD_CUSTOM;
830 fld->field_oktochange = TRUE;
831 fld->field_passcount = TRUE;
832 fld->field_name = (char *) _TIFFmalloc(32);
833 if (fld->field_name == NULL) {
834 _TIFFfree(fld);
835 return NULL;
836 }
837
838 /* note that this name is a special sign to TIFFClose() and
839 * _TIFFSetupFieldInfo() to free the field
840 */
841 sprintf(fld->field_name, "Tag %d", (int) tag);
842
843 return fld;
844 }
845
846 /* vim: set ts=8 sts=8 sw=8 noet: */
847