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root/radiance/ray/src/common/tiffio.h
Revision: 3.11
Committed: Wed Jul 13 15:25:46 2005 UTC (18 years, 9 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 3.10: +157 -21 lines
Log Message:
Updated TIFF library to 3.7.3

File Contents

# User Rev Content
1 greg 3.11 /* RCSid $Id$ */
2 greg 3.1 /*
3     * Copyright (c) 1988-1997 Sam Leffler
4     * Copyright (c) 1991-1997 Silicon Graphics, Inc.
5     *
6     * Permission to use, copy, modify, distribute, and sell this software and
7     * its documentation for any purpose is hereby granted without fee, provided
8     * that (i) the above copyright notices and this permission notice appear in
9     * all copies of the software and related documentation, and (ii) the names of
10     * Sam Leffler and Silicon Graphics may not be used in any advertising or
11     * publicity relating to the software without the specific, prior written
12     * permission of Sam Leffler and Silicon Graphics.
13     *
14     * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
15     * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
16     * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
17     *
18     * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
19     * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
20     * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
21     * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
22     * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
23     * OF THIS SOFTWARE.
24     */
25    
26     #ifndef _TIFFIO_
27     #define _TIFFIO_
28    
29     /*
30     * TIFF I/O Library Definitions.
31     */
32     #include "tiff.h"
33     #include "tiffvers.h"
34    
35     /*
36     * TIFF is defined as an incomplete type to hide the
37     * library's internal data structures from clients.
38     */
39     typedef struct tiff TIFF;
40    
41     /*
42     * The following typedefs define the intrinsic size of
43     * data types used in the *exported* interfaces. These
44     * definitions depend on the proper definition of types
45     * in tiff.h. Note also that the varargs interface used
46     * to pass tag types and values uses the types defined in
47     * tiff.h directly.
48     *
49     * NB: ttag_t is unsigned int and not unsigned short because
50     * ANSI C requires that the type before the ellipsis be a
51     * promoted type (i.e. one of int, unsigned int, pointer,
52     * or double) and because we defined pseudo-tags that are
53     * outside the range of legal Aldus-assigned tags.
54     * NB: tsize_t is int32 and not uint32 because some functions
55     * return -1.
56     * NB: toff_t is not off_t for many reasons; TIFFs max out at
57     * 32-bit file offsets being the most important, and to ensure
58     * that it is unsigned, rather than signed.
59     */
60     typedef uint32 ttag_t; /* directory tag */
61     typedef uint16 tdir_t; /* directory index */
62     typedef uint16 tsample_t; /* sample number */
63     typedef uint32 tstrip_t; /* strip number */
64     typedef uint32 ttile_t; /* tile number */
65     typedef int32 tsize_t; /* i/o size in bytes */
66     typedef void* tdata_t; /* image data ref */
67     typedef uint32 toff_t; /* file offset */
68    
69     #if !defined(__WIN32__) && (defined(_WIN32) || defined(WIN32))
70     #define __WIN32__
71     #endif
72    
73     /*
74     * On windows you should define USE_WIN32_FILEIO if you are using tif_win32.c
75     * or AVOID_WIN32_FILEIO if you are using something else (like tif_unix.c).
76     *
77     * By default tif_win32.c is assumed on windows if not using the cygwin
78     * environment.
79     */
80    
81     #if defined(_WINDOWS) || defined(__WIN32__) || defined(_Windows)
82     # if !defined(__CYGWIN) && !defined(AVOID_WIN32_FILEIO) && !defined(USE_WIN32_FILIO)
83     # define USE_WIN32_FILEIO
84     # endif
85     #endif
86    
87     #if defined(USE_WIN32_FILEIO)
88 greg 3.11 # include <windows.h>
89     # ifdef __WIN32__
90 greg 3.1 DECLARE_HANDLE(thandle_t); /* Win32 file handle */
91 greg 3.11 # else
92 greg 3.1 typedef HFILE thandle_t; /* client data handle */
93 greg 3.11 # endif /* __WIN32__ */
94 greg 3.1 #else
95     typedef void* thandle_t; /* client data handle */
96 greg 3.11 #endif /* USE_WIN32_FILEIO */
97 greg 3.1
98     #ifndef NULL
99 greg 3.11 # define NULL (void *)0
100 greg 3.1 #endif
101    
102     /*
103     * Flags to pass to TIFFPrintDirectory to control
104     * printing of data structures that are potentially
105     * very large. Bit-or these flags to enable printing
106     * multiple items.
107     */
108     #define TIFFPRINT_NONE 0x0 /* no extra info */
109     #define TIFFPRINT_STRIPS 0x1 /* strips/tiles info */
110     #define TIFFPRINT_CURVES 0x2 /* color/gray response curves */
111     #define TIFFPRINT_COLORMAP 0x4 /* colormap */
112     #define TIFFPRINT_JPEGQTABLES 0x100 /* JPEG Q matrices */
113     #define TIFFPRINT_JPEGACTABLES 0x200 /* JPEG AC tables */
114     #define TIFFPRINT_JPEGDCTABLES 0x200 /* JPEG DC tables */
115    
116 greg 3.11 /*
117     * Colour conversion stuff
118     */
119    
120     /* reference white */
121     #define D65_X0 (95.0470F)
122     #define D65_Y0 (100.0F)
123     #define D65_Z0 (108.8827F)
124    
125     #define D50_X0 (96.4250F)
126     #define D50_Y0 (100.0F)
127     #define D50_Z0 (82.4680F)
128    
129     /* Structure for holding information about a display device. */
130    
131     typedef unsigned char TIFFRGBValue; /* 8-bit samples */
132    
133     typedef struct {
134     float d_mat[3][3]; /* XYZ -> luminance matrix */
135     float d_YCR; /* Light o/p for reference white */
136     float d_YCG;
137     float d_YCB;
138     uint32 d_Vrwr; /* Pixel values for ref. white */
139     uint32 d_Vrwg;
140     uint32 d_Vrwb;
141     float d_Y0R; /* Residual light for black pixel */
142     float d_Y0G;
143     float d_Y0B;
144     float d_gammaR; /* Gamma values for the three guns */
145     float d_gammaG;
146     float d_gammaB;
147     } TIFFDisplay;
148    
149     typedef struct { /* YCbCr->RGB support */
150     TIFFRGBValue* clamptab; /* range clamping table */
151     int* Cr_r_tab;
152     int* Cb_b_tab;
153     int32* Cr_g_tab;
154     int32* Cb_g_tab;
155     int32* Y_tab;
156     } TIFFYCbCrToRGB;
157    
158     typedef struct { /* CIE Lab 1976->RGB support */
159     int range; /* Size of conversion table */
160     #define CIELABTORGB_TABLE_RANGE 1500
161     float rstep, gstep, bstep;
162     float X0, Y0, Z0; /* Reference white point */
163     TIFFDisplay display;
164     float Yr2r[CIELABTORGB_TABLE_RANGE + 1]; /* Conversion of Yr to r */
165     float Yg2g[CIELABTORGB_TABLE_RANGE + 1]; /* Conversion of Yg to g */
166     float Yb2b[CIELABTORGB_TABLE_RANGE + 1]; /* Conversion of Yb to b */
167     } TIFFCIELabToRGB;
168    
169 greg 3.1 /*
170     * RGBA-style image support.
171     */
172     typedef struct _TIFFRGBAImage TIFFRGBAImage;
173     /*
174     * The image reading and conversion routines invoke
175     * ``put routines'' to copy/image/whatever tiles of
176     * raw image data. A default set of routines are
177     * provided to convert/copy raw image data to 8-bit
178     * packed ABGR format rasters. Applications can supply
179     * alternate routines that unpack the data into a
180     * different format or, for example, unpack the data
181     * and draw the unpacked raster on the display.
182     */
183     typedef void (*tileContigRoutine)
184     (TIFFRGBAImage*, uint32*, uint32, uint32, uint32, uint32, int32, int32,
185     unsigned char*);
186     typedef void (*tileSeparateRoutine)
187     (TIFFRGBAImage*, uint32*, uint32, uint32, uint32, uint32, int32, int32,
188     unsigned char*, unsigned char*, unsigned char*, unsigned char*);
189     /*
190     * RGBA-reader state.
191     */
192     struct _TIFFRGBAImage {
193     TIFF* tif; /* image handle */
194     int stoponerr; /* stop on read error */
195     int isContig; /* data is packed/separate */
196     int alpha; /* type of alpha data present */
197     uint32 width; /* image width */
198     uint32 height; /* image height */
199     uint16 bitspersample; /* image bits/sample */
200     uint16 samplesperpixel; /* image samples/pixel */
201     uint16 orientation; /* image orientation */
202 greg 3.11 uint16 req_orientation; /* requested orientation */
203 greg 3.1 uint16 photometric; /* image photometric interp */
204     uint16* redcmap; /* colormap pallete */
205     uint16* greencmap;
206     uint16* bluecmap;
207     /* get image data routine */
208     int (*get)(TIFFRGBAImage*, uint32*, uint32, uint32);
209     union {
210     void (*any)(TIFFRGBAImage*);
211     tileContigRoutine contig;
212     tileSeparateRoutine separate;
213     } put; /* put decoded strip/tile */
214     TIFFRGBValue* Map; /* sample mapping array */
215     uint32** BWmap; /* black&white map */
216     uint32** PALmap; /* palette image map */
217     TIFFYCbCrToRGB* ycbcr; /* YCbCr conversion state */
218 greg 3.11 TIFFCIELabToRGB* cielab; /* CIE L*a*b conversion state */
219 greg 3.1
220     int row_offset;
221     int col_offset;
222     };
223    
224     /*
225     * Macros for extracting components from the
226     * packed ABGR form returned by TIFFReadRGBAImage.
227     */
228     #define TIFFGetR(abgr) ((abgr) & 0xff)
229     #define TIFFGetG(abgr) (((abgr) >> 8) & 0xff)
230     #define TIFFGetB(abgr) (((abgr) >> 16) & 0xff)
231     #define TIFFGetA(abgr) (((abgr) >> 24) & 0xff)
232    
233     /*
234     * A CODEC is a software package that implements decoding,
235     * encoding, or decoding+encoding of a compression algorithm.
236     * The library provides a collection of builtin codecs.
237     * More codecs may be registered through calls to the library
238     * and/or the builtin implementations may be overridden.
239     */
240     typedef int (*TIFFInitMethod)(TIFF*, int);
241     typedef struct {
242     char* name;
243     uint16 scheme;
244     TIFFInitMethod init;
245     } TIFFCodec;
246    
247     #include <stdio.h>
248     #include <stdarg.h>
249    
250 greg 3.10 /* share internal LogLuv conversion routines? */
251 greg 3.1 #ifndef LOGLUV_PUBLIC
252 greg 3.10 #define LOGLUV_PUBLIC 1
253 greg 3.1 #endif
254    
255 greg 3.11 #if defined(c_plusplus) || defined(__cplusplus)
256 greg 3.1 extern "C" {
257     #endif
258     typedef void (*TIFFErrorHandler)(const char*, const char*, va_list);
259     typedef tsize_t (*TIFFReadWriteProc)(thandle_t, tdata_t, tsize_t);
260     typedef toff_t (*TIFFSeekProc)(thandle_t, toff_t, int);
261     typedef int (*TIFFCloseProc)(thandle_t);
262     typedef toff_t (*TIFFSizeProc)(thandle_t);
263     typedef int (*TIFFMapFileProc)(thandle_t, tdata_t*, toff_t*);
264     typedef void (*TIFFUnmapFileProc)(thandle_t, tdata_t, toff_t);
265     typedef void (*TIFFExtendProc)(TIFF*);
266    
267     extern const char* TIFFGetVersion(void);
268    
269     extern const TIFFCodec* TIFFFindCODEC(uint16);
270     extern TIFFCodec* TIFFRegisterCODEC(uint16, const char*, TIFFInitMethod);
271     extern void TIFFUnRegisterCODEC(TIFFCodec*);
272 greg 3.11 extern int TIFFIsCODECConfigured(uint16);
273     extern TIFFCodec* TIFFGetConfiguredCODECs();
274 greg 3.1
275     extern tdata_t _TIFFmalloc(tsize_t);
276     extern tdata_t _TIFFrealloc(tdata_t, tsize_t);
277     extern void _TIFFmemset(tdata_t, int, tsize_t);
278     extern void _TIFFmemcpy(tdata_t, const tdata_t, tsize_t);
279     extern int _TIFFmemcmp(const tdata_t, const tdata_t, tsize_t);
280     extern void _TIFFfree(tdata_t);
281    
282 greg 3.11 extern void TIFFCleanup(TIFF*);
283 greg 3.1 extern void TIFFClose(TIFF*);
284     extern int TIFFFlush(TIFF*);
285     extern int TIFFFlushData(TIFF*);
286     extern int TIFFGetField(TIFF*, ttag_t, ...);
287     extern int TIFFVGetField(TIFF*, ttag_t, va_list);
288     extern int TIFFGetFieldDefaulted(TIFF*, ttag_t, ...);
289     extern int TIFFVGetFieldDefaulted(TIFF*, ttag_t, va_list);
290     extern int TIFFReadDirectory(TIFF*);
291     extern tsize_t TIFFScanlineSize(TIFF*);
292     extern tsize_t TIFFRasterScanlineSize(TIFF*);
293     extern tsize_t TIFFStripSize(TIFF*);
294 greg 3.11 extern tsize_t TIFFRawStripSize(TIFF*, tstrip_t);
295 greg 3.1 extern tsize_t TIFFVStripSize(TIFF*, uint32);
296     extern tsize_t TIFFTileRowSize(TIFF*);
297     extern tsize_t TIFFTileSize(TIFF*);
298     extern tsize_t TIFFVTileSize(TIFF*, uint32);
299     extern uint32 TIFFDefaultStripSize(TIFF*, uint32);
300     extern void TIFFDefaultTileSize(TIFF*, uint32*, uint32*);
301     extern int TIFFFileno(TIFF*);
302 greg 3.11 extern int TIFFSetFileno(TIFF*, int);
303     extern thandle_t TIFFClientdata(TIFF*);
304     extern thandle_t TIFFSetClientdata(TIFF*, thandle_t);
305 greg 3.1 extern int TIFFGetMode(TIFF*);
306 greg 3.11 extern int TIFFSetMode(TIFF*, int);
307 greg 3.1 extern int TIFFIsTiled(TIFF*);
308     extern int TIFFIsByteSwapped(TIFF*);
309     extern int TIFFIsUpSampled(TIFF*);
310     extern int TIFFIsMSB2LSB(TIFF*);
311 greg 3.11 extern int TIFFIsBigEndian(TIFF*);
312     extern TIFFReadWriteProc TIFFGetReadProc(TIFF*);
313     extern TIFFReadWriteProc TIFFGetWriteProc(TIFF*);
314     extern TIFFSeekProc TIFFGetSeekProc(TIFF*);
315     extern TIFFCloseProc TIFFGetCloseProc(TIFF*);
316     extern TIFFSizeProc TIFFGetSizeProc(TIFF*);
317     extern TIFFMapFileProc TIFFGetMapFileProc(TIFF*);
318     extern TIFFUnmapFileProc TIFFGetUnmapFileProc(TIFF*);
319 greg 3.1 extern uint32 TIFFCurrentRow(TIFF*);
320     extern tdir_t TIFFCurrentDirectory(TIFF*);
321     extern tdir_t TIFFNumberOfDirectories(TIFF*);
322     extern uint32 TIFFCurrentDirOffset(TIFF*);
323     extern tstrip_t TIFFCurrentStrip(TIFF*);
324     extern ttile_t TIFFCurrentTile(TIFF*);
325     extern int TIFFReadBufferSetup(TIFF*, tdata_t, tsize_t);
326     extern int TIFFWriteBufferSetup(TIFF*, tdata_t, tsize_t);
327 greg 3.11 extern int TIFFSetupStrips(TIFF *);
328 greg 3.1 extern int TIFFWriteCheck(TIFF*, int, const char *);
329     extern int TIFFCreateDirectory(TIFF*);
330     extern int TIFFLastDirectory(TIFF*);
331     extern int TIFFSetDirectory(TIFF*, tdir_t);
332     extern int TIFFSetSubDirectory(TIFF*, uint32);
333     extern int TIFFUnlinkDirectory(TIFF*, tdir_t);
334     extern int TIFFSetField(TIFF*, ttag_t, ...);
335     extern int TIFFVSetField(TIFF*, ttag_t, va_list);
336     extern int TIFFWriteDirectory(TIFF *);
337 greg 3.11 extern int TIFFCheckpointDirectory(TIFF *);
338 greg 3.10 extern int TIFFRewriteDirectory(TIFF *);
339 greg 3.1 extern int TIFFReassignTagToIgnore(enum TIFFIgnoreSense, int);
340    
341     #if defined(c_plusplus) || defined(__cplusplus)
342     extern void TIFFPrintDirectory(TIFF*, FILE*, long = 0);
343     extern int TIFFReadScanline(TIFF*, tdata_t, uint32, tsample_t = 0);
344     extern int TIFFWriteScanline(TIFF*, tdata_t, uint32, tsample_t = 0);
345     extern int TIFFReadRGBAImage(TIFF*, uint32, uint32, uint32*, int = 0);
346 greg 3.11 extern int TIFFReadRGBAImageOriented(TIFF*, uint32, uint32, uint32*,
347     int = ORIENTATION_BOTLEFT, int = 0);
348 greg 3.1 #else
349     extern void TIFFPrintDirectory(TIFF*, FILE*, long);
350     extern int TIFFReadScanline(TIFF*, tdata_t, uint32, tsample_t);
351     extern int TIFFWriteScanline(TIFF*, tdata_t, uint32, tsample_t);
352     extern int TIFFReadRGBAImage(TIFF*, uint32, uint32, uint32*, int);
353 greg 3.11 extern int TIFFReadRGBAImageOriented(TIFF*, uint32, uint32, uint32*, int, int);
354 greg 3.1 #endif
355    
356     extern int TIFFReadRGBAStrip(TIFF*, tstrip_t, uint32 * );
357     extern int TIFFReadRGBATile(TIFF*, uint32, uint32, uint32 * );
358     extern int TIFFRGBAImageOK(TIFF*, char [1024]);
359     extern int TIFFRGBAImageBegin(TIFFRGBAImage*, TIFF*, int, char [1024]);
360     extern int TIFFRGBAImageGet(TIFFRGBAImage*, uint32*, uint32, uint32);
361     extern void TIFFRGBAImageEnd(TIFFRGBAImage*);
362     extern TIFF* TIFFOpen(const char*, const char*);
363 greg 3.11 # ifdef __WIN32__
364     extern TIFF* TIFFOpenW(const wchar_t*, const char*);
365     # endif /* __WIN32__ */
366 greg 3.1 extern TIFF* TIFFFdOpen(int, const char*, const char*);
367     extern TIFF* TIFFClientOpen(const char*, const char*,
368     thandle_t,
369     TIFFReadWriteProc, TIFFReadWriteProc,
370     TIFFSeekProc, TIFFCloseProc,
371     TIFFSizeProc,
372     TIFFMapFileProc, TIFFUnmapFileProc);
373     extern const char* TIFFFileName(TIFF*);
374 greg 3.11 extern const char* TIFFSetFileName(TIFF*, const char *);
375 greg 3.1 extern void TIFFError(const char*, const char*, ...);
376     extern void TIFFWarning(const char*, const char*, ...);
377     extern TIFFErrorHandler TIFFSetErrorHandler(TIFFErrorHandler);
378     extern TIFFErrorHandler TIFFSetWarningHandler(TIFFErrorHandler);
379     extern TIFFExtendProc TIFFSetTagExtender(TIFFExtendProc);
380     extern ttile_t TIFFComputeTile(TIFF*, uint32, uint32, uint32, tsample_t);
381     extern int TIFFCheckTile(TIFF*, uint32, uint32, uint32, tsample_t);
382     extern ttile_t TIFFNumberOfTiles(TIFF*);
383     extern tsize_t TIFFReadTile(TIFF*,
384     tdata_t, uint32, uint32, uint32, tsample_t);
385     extern tsize_t TIFFWriteTile(TIFF*,
386     tdata_t, uint32, uint32, uint32, tsample_t);
387     extern tstrip_t TIFFComputeStrip(TIFF*, uint32, tsample_t);
388     extern tstrip_t TIFFNumberOfStrips(TIFF*);
389     extern tsize_t TIFFReadEncodedStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
390     extern tsize_t TIFFReadRawStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
391     extern tsize_t TIFFReadEncodedTile(TIFF*, ttile_t, tdata_t, tsize_t);
392     extern tsize_t TIFFReadRawTile(TIFF*, ttile_t, tdata_t, tsize_t);
393     extern tsize_t TIFFWriteEncodedStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
394     extern tsize_t TIFFWriteRawStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
395     extern tsize_t TIFFWriteEncodedTile(TIFF*, ttile_t, tdata_t, tsize_t);
396     extern tsize_t TIFFWriteRawTile(TIFF*, ttile_t, tdata_t, tsize_t);
397 greg 3.11 extern int TIFFDataWidth(TIFFDataType); /* table of tag datatype widths */
398 greg 3.1 extern void TIFFSetWriteOffset(TIFF*, toff_t);
399     extern void TIFFSwabShort(uint16*);
400     extern void TIFFSwabLong(uint32*);
401     extern void TIFFSwabDouble(double*);
402     extern void TIFFSwabArrayOfShort(uint16*, unsigned long);
403 greg 3.11 extern void TIFFSwabArrayOfTriples(uint8*, unsigned long);
404 greg 3.1 extern void TIFFSwabArrayOfLong(uint32*, unsigned long);
405     extern void TIFFSwabArrayOfDouble(double*, unsigned long);
406     extern void TIFFReverseBits(unsigned char *, unsigned long);
407     extern const unsigned char* TIFFGetBitRevTable(int);
408    
409 greg 3.11 #ifdef LOGLUV_PUBLIC
410 greg 3.1 #define U_NEU 0.210526316
411     #define V_NEU 0.473684211
412     #define UVSCALE 410.
413     extern double LogL16toY(int);
414     extern double LogL10toY(int);
415     extern void XYZtoRGB24(float*, uint8*);
416     extern int uv_decode(double*, double*, int);
417     extern void LogLuv24toXYZ(uint32, float*);
418     extern void LogLuv32toXYZ(uint32, float*);
419     #if defined(c_plusplus) || defined(__cplusplus)
420     extern int LogL16fromY(double, int = SGILOGENCODE_NODITHER);
421     extern int LogL10fromY(double, int = SGILOGENCODE_NODITHER);
422     extern int uv_encode(double, double, int = SGILOGENCODE_NODITHER);
423     extern uint32 LogLuv24fromXYZ(float*, int = SGILOGENCODE_NODITHER);
424     extern uint32 LogLuv32fromXYZ(float*, int = SGILOGENCODE_NODITHER);
425     #else
426     extern int LogL16fromY(double, int);
427     extern int LogL10fromY(double, int);
428     extern int uv_encode(double, double, int);
429     extern uint32 LogLuv24fromXYZ(float*, int);
430     extern uint32 LogLuv32fromXYZ(float*, int);
431     #endif
432     #endif /* LOGLUV_PUBLIC */
433 greg 3.11
434     /*
435     ** Stuff, related to tag handling and creating custom tags.
436     */
437     extern int TIFFGetTagListCount( TIFF * );
438     extern ttag_t TIFFGetTagListEntry( TIFF *, int tag_index );
439    
440     #define TIFF_ANY TIFF_NOTYPE /* for field descriptor searching */
441     #define TIFF_VARIABLE -1 /* marker for variable length tags */
442     #define TIFF_SPP -2 /* marker for SamplesPerPixel tags */
443     #define TIFF_VARIABLE2 -3 /* marker for uint32 var-length tags */
444    
445     #define FIELD_CUSTOM 65
446    
447     typedef struct {
448     ttag_t field_tag; /* field's tag */
449     short field_readcount; /* read count/TIFF_VARIABLE/TIFF_SPP */
450     short field_writecount; /* write count/TIFF_VARIABLE */
451     TIFFDataType field_type; /* type of associated data */
452     unsigned short field_bit; /* bit in fieldsset bit vector */
453     unsigned char field_oktochange; /* if true, can change while writing */
454     unsigned char field_passcount; /* if true, pass dir count on set */
455     char *field_name; /* ASCII name */
456     } TIFFFieldInfo;
457    
458     typedef struct _TIFFTagValue {
459     const TIFFFieldInfo *info;
460     int count;
461     void *value;
462     } TIFFTagValue;
463    
464     extern void TIFFMergeFieldInfo(TIFF*, const TIFFFieldInfo[], int);
465     extern const TIFFFieldInfo* TIFFFindFieldInfo(TIFF*, ttag_t, TIFFDataType);
466     extern const TIFFFieldInfo* TIFFFindFieldInfoByName(TIFF* , const char *,
467     TIFFDataType);
468     extern const TIFFFieldInfo* TIFFFieldWithTag(TIFF*, ttag_t);
469     extern const TIFFFieldInfo* TIFFFieldWithName(TIFF*, const char *);
470    
471     typedef int (*TIFFVSetMethod)(TIFF*, ttag_t, va_list);
472     typedef int (*TIFFVGetMethod)(TIFF*, ttag_t, va_list);
473     typedef void (*TIFFPrintMethod)(TIFF*, FILE*, long);
474    
475     typedef struct {
476     TIFFVSetMethod vsetfield; /* tag set routine */
477     TIFFVGetMethod vgetfield; /* tag get routine */
478     TIFFPrintMethod printdir; /* directory print routine */
479     } TIFFTagMethods;
480    
481     extern TIFFTagMethods *TIFFAccessTagMethods( TIFF * );
482     extern void *TIFFGetClientInfo( TIFF *, const char * );
483     extern void TIFFSetClientInfo( TIFF *, void *, const char * );
484    
485     extern int TIFFCIELabToRGBInit(TIFFCIELabToRGB*, TIFFDisplay *, float*);
486     extern void TIFFCIELabToXYZ(TIFFCIELabToRGB *, uint32, int32, int32,
487     float *, float *, float *);
488     extern void TIFFXYZToRGB(TIFFCIELabToRGB *, float, float, float,
489     uint32 *, uint32 *, uint32 *);
490    
491     extern int TIFFYCbCrToRGBInit(TIFFYCbCrToRGB*, float*, float*);
492     extern void TIFFYCbCrtoRGB(TIFFYCbCrToRGB *, uint32, int32, int32,
493     uint32 *, uint32 *, uint32 *);
494    
495     #if defined(c_plusplus) || defined(__cplusplus)
496 greg 3.1 }
497     #endif
498 greg 3.11
499 greg 3.1 #endif /* _TIFFIO_ */
500 greg 3.11
501     /* vim: set ts=8 sts=8 sw=8 noet: */