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IFF.H
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C/C++ Source or Header
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1993-06-10
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3KB
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95 lines
#ifndef NULL
#define NULL 0
#endif
#ifndef FALSE
#define FALSE 0
#define TRUE 1
#endif
#define LONG unsigned long
#define ULONG unsigned long
#define UBYTE unsigned char
#define UWORD unsigned short
#define DWORD unsigned long
void ByteFlipLong(long *);
unsigned char far * Readiff(char *); /* this returns back a bitmap with a picture in it*/
typedef LONG ID; /* An ID is four printable ASCII chars like FORM or DPPV */
#define MakeID(d,c,b,a) ((DWORD)(a)<<24 | (DWORD)(b)<<16 | (DWORD)(c)<<8 | (DWORD)(d) )
#define FORM MakeID('F','O','R','M')
#define PROP MakeID('P','R','O','P')
#define LIST MakeID('L','I','S','T')
#define CAT MakeID('C','A','T',' ')
#define FILLER MakeID(' ',' ',' ',' ')
typedef struct
{
ID type;
long cksize;
ID subtype;
} form_chunk;
typedef struct {
ID ckID;
LONG ckSize;
} ChunkHeader;
typedef struct {
ID ckID;
LONG ckSize;
UBYTE ckData[ 1 /*REALLY: ckSize*/ ];
} Chunk;
#define ID_PBM MakeID('P','B','M',' ')
#define ID_ILBM MakeID('I','L','B','M')
#define ID_BMHD MakeID('B','M','H','D')
#define ID_CMAP MakeID('C','M','A','P')
#define ID_GRAB MakeID('G','R','A','B')
#define ID_DEST MakeID('D','E','S','T')
#define ID_SPRT MakeID('S','P','R','T')
#define ID_CAMG MakeID('C','A','M','G')
#define ID_BODY MakeID('B','O','D','Y')
/* ---------- BitMapHeader ---------------------------------------------*/
typedef UBYTE Masking; /* Choice of masking technique.*/
#define mskNone 0
#define mskHasMask 1
#define mskHasTransparentColor 2
#define mskLasso 3
#define cmpNone 0
#define cmpByteRun1 1
/* A BitMapHeader is stored in a BMHD chunk. */
typedef struct {
UWORD w, h; /* raster width & height in pixels */
UWORD x, y; /* position for this image */
UBYTE nPlanes; /* # source bitplanes */
UBYTE masking; /* masking technique */
UBYTE compression; /* compression algoithm */
UBYTE pad1; /* UNUSED. For consistency, put 0 here.*/
UWORD transparentColor; /* transparent "color number" */
UBYTE xAspect, yAspect; /* aspect ratio, a rational number x/y */
UWORD pageWidth, pageHeight; /* source "page" size in pixels */
} BitMapHeader;
/* RowBytes computes the number of bytes in a row, from the width in pixels.*/
#define RowBytes(w) (((w) + 15) >> 4 << 1)
/* A CMAP chunk is a packed array of ColorRegisters (3 bytes each). */
typedef struct {
UBYTE red, green, blue; /* MUST be UBYTEs so ">> 4" won't sign extend.*/
} ColorRegister;
/* Use this constant instead of sizeof(ColorRegister). */
#define sizeofColorRegister 3
void ByteFlipLong(long *);
void ByteFlipShort(short *);
int swab(unsigned short);