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- /* Miscellaneous definitions */
-
- /* Compression */
- #define NO_COMPRESSION 1
- #define HUFFMAN 2
- #define GROUP3 3
- #define GROUP4 4
- #define LZW 5
- #define PACKBITS 32773
-
- /* NewSubfileType */
- #define REDUCED (1<<0)
- #define MULTIPAGE (1<<1)
- #define TRASPARENT_MASK (1<<2)
-
- /* SubfileType */
- #define FULL_RESOLUTION 1
- #define REDUCED_RESOLUTION 2
- #define MULTI_PAGE 3
-
- /* PhotometricInterpretation */
- #define BILEVEL_ZERO_IS_WHITE 0
- #define BILEVEL_ZERO_IS_BLACK 1
- #define TRUE_COLOR_RGB 2
- #define COLOR_MAPPED_RGB 3
- #define TRASPARENCY_MASK 4
-
- /* PlanarConfiguration */
- #define CHUNKY 1
- #define PLANAR 2
-
- /* Predictor */
- #define NO_PREDICTOR 1
- #define HORIZONTAL_DIFFERENCING 2
-
- /* ResolutionUnit */
- #define NO_UNIT 1
- #define INCH 2
- #define CENTIMETER 3
-
- /* Group3Options */
- #define BIDIMENSIONAL (1<<0)
- #define UNCOMPRESSSED (1<<1)
- #define FILLBITS (1<<2)
-
- /* FillOrder */
- #define MSB_FIRST 1
- #define LSB_FIRST 2
-
- /* Orientation */
- #define TOPLEFT 1
- #define TOPRIGHT 2
- #define BOTTOMRIGHT 3
- #define BOTTOMLEFT 4
- #define LEFTTOP 5
- #define RIGHTTOP 6
- #define LEFTBOTTOM 7
- #define RIGHTBOTTOM 8
-
- /* Threshholding */
- #define LINE_ART 1
- #define DITHERED 2
- #define ERROR_DIFFUSED 3
-
- typedef struct Rational {
- unsigned long Numerator;
- unsigned long Denominator;
- } rational;
-
- /* TIFF structures */
-
- typedef struct TBF {
- unsigned char GrayResponseUnit; /* Scale for intensity values */
- unsigned char NewSubfileType; /* Special flags */
- unsigned char PhotometricInterpretation; /* Image type */
- unsigned char PlanarConfiguration; /* Image data organization */
- unsigned char Predictor; /* LZW predictor */
- unsigned char ResolutionUnit; /* Unit length for XResolution and YResolution */
- unsigned char SamplesPerPixel; /* Color components */
- unsigned short Compression; /* Compression type */
- unsigned short BitsPerSample[8]; /* Bits per component (e.g. RGB, YCMK etc.) */
- unsigned short *ColorMap; /* Pointer to an array of RGB values */
- unsigned short *ColorResponseCurves; /* Pointer to an array of RGB values */
- unsigned short *GrayResponseCurve; /* Pointer to an array of intensity values */
- unsigned long ImageLength; /* Image height */
- unsigned long ImageWidth; /* Image width */
- unsigned long RowsPerStrip; /* Strip height */
- unsigned long *StripByteCounts; /* Bytes in a strip */
- unsigned long *StripOffsets; /* Strips offsets from BOF */
- rational XResolution,YResolution;/* Image absolute dimension */
- } TIFFBasicFields;
-
- #define TBFSIZE (sizeof (struct TBF))
-
- typedef struct TIF {
- char *Artist;
- char *HostComputer;
- char *ImageDescription;
- char *Make,*Model;
- char *Software;
- char DateTime[20];
- } TIFFInformationFields;
-
- #define TIFSIZE (sizeof (struct TIF))
-
- typedef struct TFF {
- unsigned char Group3Options; /* flags for group 3 compression */
- unsigned char Group4Options; /* flags for group 4 compression */
- } TIFFFaxFields;
-
- #define TFFSIZE (sizeof (struct TFF))
-
- typedef struct TDSRF {
- char *DocumentName;
- char *PageName;
- unsigned char Threshholding;
- unsigned char Orientation;
- unsigned short CellLength;
- unsigned short CellWidth;
- unsigned short FillOrder;
- unsigned short PageNumber[2];
- unsigned short MaxSampleValue[8];
- unsigned short MinSampleValue[8];
- unsigned long *FreeByteCounts;
- unsigned long *FreeOffsets;
- rational XPosition,YPosition;
- } TIFFDocumentFields;
-
- #define TDRSFSIZE (sizeof (struct TDRSF))
-
- typedef struct TIFH {
- unsigned short ByteOrder;
- unsigned short Version;
- unsigned long Offset;
- } TIFFImageFileHeader;
-
- #define TIFHSIZE (sizeof (struct TIFH))
-