/* * 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. */
/* * TIFF is defined as an incomplete type to hide the * library's internal data structures from clients. */ typedef struct tiff TIFF;
/* * The following typedefs define the intrinsic size of * data types used in the *exported* interfaces. These * definitions depend on the proper definition of types * in tiff.h. Note also that the varargs interface used * to pass tag types and values uses the types defined in * tiff.h directly. * * NB: ttag_t is unsigned int and not unsigned short because * ANSI C requires that the type before the ellipsis be a * promoted type (i.e. one of int, unsigned int, pointer, * or double) and because we defined pseudo-tags that are * outside the range of legal Aldus-assigned tags. * NB: tsize_t is int32 and not uint32 because some functions * return -1. * NB: toff_t is not off_t for many reasons; TIFFs max out at * 32-bit file offsets, and BigTIFF maxes out at 64-bit * offsets being the most important, and to ensure use of * a consistently unsigned type across architectures. * Prior to libtiff 4.0, this was an unsigned 32 bit type. */ /* * this is the machine addressing size type, only it's signed, so make it * int32 on 32bit machines, int64 on 64bit machines */ typedef TIFF_SSIZE_T tmsize_t; typedef uint64 toff_t; /* file offset */ /* the following are deprecated and should be replaced by their defining counterparts */ typedef uint32 ttag_t; /* directory tag */ typedef uint16 tdir_t; /* directory index */ typedef uint16 tsample_t; /* sample number */ typedef uint32 tstrile_t; /* strip or tile number */ typedef tstrile_t tstrip_t; /* strip number */ typedef tstrile_t ttile_t; /* tile number */ typedef tmsize_t tsize_t; /* i/o size in bytes */ typedef void* tdata_t; /* image data ref */
/* * On windows you should define USE_WIN32_FILEIO if you are using tif_win32.c * or AVOID_WIN32_FILEIO if you are using something else (like tif_unix.c). * * By default tif_unix.c is assumed. */
/* * Flags to pass to TIFFPrintDirectory to control * printing of data structures that are potentially * very large. Bit-or these flags to enable printing * multiple items. */ #define TIFFPRINT_NONE 0x0 /* no extra info */ #define TIFFPRINT_STRIPS 0x1 /* strips/tiles info */ #define TIFFPRINT_CURVES 0x2 /* color/gray response curves */ #define TIFFPRINT_COLORMAP 0x4 /* colormap */ #define TIFFPRINT_JPEGQTABLES 0x100 /* JPEG Q matrices */ #define TIFFPRINT_JPEGACTABLES 0x200 /* JPEG AC tables */ #define TIFFPRINT_JPEGDCTABLES 0x200 /* JPEG DC tables */
typedef struct { /* CIE Lab 1976->RGB support */ int range; /* Size of conversion table */ #define CIELABTORGB_TABLE_RANGE 1500 float rstep, gstep, bstep; float X0, Y0, Z0; /* Reference white point */ TIFFDisplay display; float Yr2r[CIELABTORGB_TABLE_RANGE + 1]; /* Conversion of Yr to r */ float Yg2g[CIELABTORGB_TABLE_RANGE + 1]; /* Conversion of Yg to g */ float Yb2b[CIELABTORGB_TABLE_RANGE + 1]; /* Conversion of Yb to b */ } TIFFCIELabToRGB;
/* * RGBA-style image support. */ typedef struct _TIFFRGBAImage TIFFRGBAImage; /* * The image reading and conversion routines invoke * ``put routines'' to copy/image/whatever tiles of * raw image data. A default set of routines are * provided to convert/copy raw image data to 8-bit * packed ABGR format rasters. Applications can supply * alternate routines that unpack the data into a * different format or, for example, unpack the data * and draw the unpacked raster on the display. */ typedef void (*tileContigRoutine) (TIFFRGBAImage*, uint32*, uint32, uint32, uint32, uint32, int32, int32, unsigned char*); typedef void (*tileSeparateRoutine) (TIFFRGBAImage*, uint32*, uint32, uint32, uint32, uint32, int32, int32, unsigned char*, unsigned char*, unsigned char*, unsigned char*); /* * RGBA-reader state. */ struct _TIFFRGBAImage { TIFF* tif; /* image handle */ int stoponerr; /* stop on read error */ int isContig; /* data is packed/separate */ int alpha; /* type of alpha data present */ uint32 width; /* image width */ uint32 height; /* image height */ uint16 bitspersample; /* image bits/sample */ uint16 samplesperpixel; /* image samples/pixel */ uint16 orientation; /* image orientation */ uint16 req_orientation; /* requested orientation */ uint16 photometric; /* image photometric interp */ uint16* redcmap; /* colormap palette */ uint16* greencmap; uint16* bluecmap; /* get image data routine */ int (*get)(TIFFRGBAImage*, uint32*, uint32, uint32); /* put decoded strip/tile */ union { void (*any)(TIFFRGBAImage*); tileContigRoutine contig; tileSeparateRoutine separate; } put; TIFFRGBValue* Map; /* sample mapping array */ uint32** BWmap; /* black&white map */ uint32** PALmap; /* palette image map */ TIFFYCbCrToRGB* ycbcr; /* YCbCr conversion state */ TIFFCIELabToRGB* cielab; /* CIE L*a*b conversion state */
uint8* UaToAa; /* Unassociated alpha to associated alpha conversion LUT */ uint8* Bitdepth16To8; /* LUT for conversion from 16bit to 8bit values */
int row_offset; int col_offset; };
/* * Macros for extracting components from the * packed ABGR form returned by TIFFReadRGBAImage. */ #define TIFFGetR(abgr) ((abgr) & 0xff) #define TIFFGetG(abgr) (((abgr) >> 8) & 0xff) #define TIFFGetB(abgr) (((abgr) >> 16) & 0xff) #define TIFFGetA(abgr) (((abgr) >> 24) & 0xff)
/* * A CODEC is a software package that implements decoding, * encoding, or decoding+encoding of a compression algorithm. * The library provides a collection of builtin codecs. * More codecs may be registered through calls to the library * and/or the builtin implementations may be overridden. */ typedef int (*TIFFInitMethod)(TIFF*, int); typedef struct { char* name; uint16 scheme; TIFFInitMethod init; } TIFFCodec;
/* ** Stuff, related to tag handling and creating custom tags. */ extern int TIFFGetTagListCount( TIFF * ); extern uint32 TIFFGetTagListEntry( TIFF *, int tag_index );
#define TIFF_ANY TIFF_NOTYPE /* for field descriptor searching */ #define TIFF_VARIABLE -1 /* marker for variable length tags */ #define TIFF_SPP -2 /* marker for SamplesPerPixel tags */ #define TIFF_VARIABLE2 -3 /* marker for uint32 var-length tags */
/**************************************************************************** * O B S O L E T E D I N T E R F A C E S * * Don't use this stuff in your applications, it may be removed in the future * libtiff versions. ****************************************************************************/ typedef struct { ttag_t 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 */ 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 */ } TIFFFieldInfo;
extern int TIFFMergeFieldInfo(TIFF*, const TIFFFieldInfo[], uint32);