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+/* $Id: tif_dir.h,v 1.54 2011-02-18 20:53:05 fwarmerdam 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.
+ */
+
+typedef struct {
+ const TIFFField *info;
+ int count;
+ void *value;
+} TIFFTagValue;
+
+/*
+ * TIFF Image File Directories are comprised of a table of field
+ * descriptors of the form shown below. The table is sorted in
+ * ascending order by tag. The values associated with each entry are
+ * disjoint and may appear anywhere in the file (so long as they are
+ * placed on a word boundary).
+ *
+ * If the value is 4 bytes or less, in ClassicTIFF, or 8 bytes or less in
+ * BigTIFF, then it is placed in the offset field to save space. If so,
+ * it is left-justified in the offset field.
+ */
+typedef struct {
+ uint16 tdir_tag; /* see below */
+ uint16 tdir_type; /* data type; see below */
+ uint64 tdir_count; /* number of items; length in spec */
+ union {
+ uint16 toff_short;
+ uint32 toff_long;
+ uint64 toff_long8;
+ } tdir_offset; /* either offset or the data itself if fits */
+} TIFFDirEntry;
+
+/*
+ * 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;
+ double* 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;
+ /* even though the name is misleading, td_stripsperimage is the number
+ * of striles (=strips or tiles) per plane, and td_nstrips the total
+ * number of striles */
+ uint32 td_stripsperimage;
+ uint32 td_nstrips; /* size of offset & bytecount arrays */
+ uint64* td_stripoffset;
+ uint64* td_stripbytecount;
+ int td_stripbytecountsorted; /* is the bytecount array sorted ascending? */
+#if defined(DEFER_STRILE_LOAD)
+ TIFFDirEntry td_stripoffset_entry; /* for deferred loading */
+ TIFFDirEntry td_stripbytecount_entry; /* for deferred loading */
+#endif
+ uint16 td_nsubifd;
+ uint64* td_subifd;
+ /* YCbCr parameters */
+ uint16 td_ycbcrsubsampling[2];
+ uint16 td_ycbcrpositioning;
+ /* Colorimetry parameters */
+ uint16* td_transferfunction[3];
+ float* td_refblackwhite;
+ /* 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_REFBLACKWHITE 41
+#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 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))
+
+typedef enum {
+ TIFF_SETGET_UNDEFINED = 0,
+ TIFF_SETGET_ASCII = 1,
+ TIFF_SETGET_UINT8 = 2,
+ TIFF_SETGET_SINT8 = 3,
+ TIFF_SETGET_UINT16 = 4,
+ TIFF_SETGET_SINT16 = 5,
+ TIFF_SETGET_UINT32 = 6,
+ TIFF_SETGET_SINT32 = 7,
+ TIFF_SETGET_UINT64 = 8,
+ TIFF_SETGET_SINT64 = 9,
+ TIFF_SETGET_FLOAT = 10,
+ TIFF_SETGET_DOUBLE = 11,
+ TIFF_SETGET_IFD8 = 12,
+ TIFF_SETGET_INT = 13,
+ TIFF_SETGET_UINT16_PAIR = 14,
+ TIFF_SETGET_C0_ASCII = 15,
+ TIFF_SETGET_C0_UINT8 = 16,
+ TIFF_SETGET_C0_SINT8 = 17,
+ TIFF_SETGET_C0_UINT16 = 18,
+ TIFF_SETGET_C0_SINT16 = 19,
+ TIFF_SETGET_C0_UINT32 = 20,
+ TIFF_SETGET_C0_SINT32 = 21,
+ TIFF_SETGET_C0_UINT64 = 22,
+ TIFF_SETGET_C0_SINT64 = 23,
+ TIFF_SETGET_C0_FLOAT = 24,
+ TIFF_SETGET_C0_DOUBLE = 25,
+ TIFF_SETGET_C0_IFD8 = 26,
+ TIFF_SETGET_C16_ASCII = 27,
+ TIFF_SETGET_C16_UINT8 = 28,
+ TIFF_SETGET_C16_SINT8 = 29,
+ TIFF_SETGET_C16_UINT16 = 30,
+ TIFF_SETGET_C16_SINT16 = 31,
+ TIFF_SETGET_C16_UINT32 = 32,
+ TIFF_SETGET_C16_SINT32 = 33,
+ TIFF_SETGET_C16_UINT64 = 34,
+ TIFF_SETGET_C16_SINT64 = 35,
+ TIFF_SETGET_C16_FLOAT = 36,
+ TIFF_SETGET_C16_DOUBLE = 37,
+ TIFF_SETGET_C16_IFD8 = 38,
+ TIFF_SETGET_C32_ASCII = 39,
+ TIFF_SETGET_C32_UINT8 = 40,
+ TIFF_SETGET_C32_SINT8 = 41,
+ TIFF_SETGET_C32_UINT16 = 42,
+ TIFF_SETGET_C32_SINT16 = 43,
+ TIFF_SETGET_C32_UINT32 = 44,
+ TIFF_SETGET_C32_SINT32 = 45,
+ TIFF_SETGET_C32_UINT64 = 46,
+ TIFF_SETGET_C32_SINT64 = 47,
+ TIFF_SETGET_C32_FLOAT = 48,
+ TIFF_SETGET_C32_DOUBLE = 49,
+ TIFF_SETGET_C32_IFD8 = 50,
+ TIFF_SETGET_OTHER = 51
+} TIFFSetGetFieldType;
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+extern const TIFFFieldArray* _TIFFGetFields(void);
+extern const TIFFFieldArray* _TIFFGetExifFields(void);
+extern void _TIFFSetupFields(TIFF* tif, const TIFFFieldArray* infoarray);
+extern void _TIFFPrintFieldInfo(TIFF*, FILE*);
+
+extern int _TIFFFillStriles(TIFF*);
+
+typedef enum {
+ tfiatImage,
+ tfiatExif,
+ tfiatOther
+} TIFFFieldArrayType;
+
+struct _TIFFFieldArray {
+ TIFFFieldArrayType type; /* array type, will be used to determine if IFD is image and such */
+ uint32 allocated_size; /* 0 if array is constant, other if modified by future definition extension support */
+ uint32 count; /* number of elements in fields array */
+ TIFFField* fields; /* actual field info */
+};
+
+struct _TIFFField {
+ uint32 field_tag; /* field's tag */
+ short field_readcount; /* read count/TIFF_VARIABLE/TIFF_SPP */
+ short field_writecount; /* write count/TIFF_VARIABLE */
+ TIFFDataType field_type; /* type of associated data */
+ uint32 reserved; /* reserved for future extension */
+ TIFFSetGetFieldType set_field_type; /* type to be passed to TIFFSetField */
+ TIFFSetGetFieldType get_field_type; /* type to be passed to TIFFGetField */
+ unsigned short field_bit; /* bit in fieldsset bit vector */
+ unsigned char field_oktochange; /* if true, can change while writing */
+ unsigned char field_passcount; /* if true, pass dir count on set */
+ char* field_name; /* ASCII name */
+ TIFFFieldArray* field_subfields; /* if field points to child ifds, child ifd field definition array */
+};
+
+extern int _TIFFMergeFields(TIFF*, const TIFFField[], uint32);
+extern const TIFFField* _TIFFFindOrRegisterField(TIFF *, uint32, TIFFDataType);
+extern TIFFField* _TIFFCreateAnonField(TIFF *, uint32, TIFFDataType);
+
+#if defined(__cplusplus)
+}
+#endif
+#endif /* _TIFFDIR_ */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */