/* ilbm.h - header file for IFF ILBM files */ #define RowBytes(cols) ((((cols) + 15) / 16) * 2) /* definitions for BMHD */ typedef struct { unsigned short w, h; short x, y; unsigned char nPlanes, masking, compression, flags; unsigned short transparentColor; unsigned char xAspect, yAspect; short pageWidth, pageHeight; } BitMapHeader; #define BitMapHeaderSize 20 #define BMHD_FLAGS_CMAPOK (1<<7) /* valid 8bit colormap */ #define mskNone 0 #define mskHasMask 1 #define mskHasTransparentColor 2 /* not supported */ #define mskLasso 3 /* not supported */ #define mskMAXKNOWN mskLasso static char * mskNAME[] = { "none", "mask plane", "transparent color", "lasso" }; #define cmpNone 0 #define cmpByteRun1 1 #define cmpMAXKNOWN cmpByteRun1 static char * cmpNAME[] = { "none", "byterun1" }; /* definitions for CMAP */ #if 0 /* not used */ typedef struct { unsigned char r, g, b; } ColorRegister; #endif /* definitions for CAMG */ #define CAMGChunkSize 4 #define vmLACE 0x0004 #define vmEXTRA_HALFBRITE 0x0080 #define vmHAM 0x0800 #define vmHIRES 0x8000 #define HAMCODE_CMAP 0 /* look up color in colormap */ #define HAMCODE_BLUE 1 /* new blue component */ #define HAMCODE_RED 2 /* new red component */ #define HAMCODE_GREEN 3 /* new green component */ /* multipalette PCHG chunk definitions */ /* get number of longwords in line mask from PCHG.LineCount */ #define MaskLongWords(x) (((x) + 31) / 32) typedef struct { unsigned short Compression; unsigned short Flags; short StartLine; /* may be negative */ unsigned short LineCount; unsigned short ChangedLines; unsigned short MinReg; unsigned short MaxReg; unsigned short MaxChanges; unsigned long TotalChanges; } PCHGHeader; #define PCHGHeaderSize 20 /* Compression modes */ #define PCHG_COMP_NONE 0 #define PCHG_COMP_HUFFMAN 1 /* Flags */ #define PCHGF_12BIT (1 << 0) /* use SmallLineChanges */ #define PCHGF_32BIT (1 << 1) /* use BigLineChanges */ #define PCHGF_USE_ALPHA (1 << 2) /* meaningful only if PCHG_32BIT is on: use the Alpha channel info */ typedef struct { unsigned long CompInfoSize; unsigned long OriginalDataSize; } PCHGCompHeader; #define PCHGCompHeaderSize 8 #if 0 /* not used */ typedef struct { unsigned char ChangeCount16; unsigned char ChangeCount32; unsigned short *PaletteChange; } SmallLineChanges; typedef struct { unsigned short Register; unsigned char Alpha, Red, Blue, Green; /* ARBG, not ARGB */ } BigPaletteChange; typedef struct { unsigned short ChangeCount; BigPaletteChange *PaletteChange; } BigLineChanges; #endif /* 0 */ /* definitions for CLUT */ #if 0 /* not used */ typedef struct { unsigned long type; unsigned long reserved0; unsigned char lut[256]; } ColorLUT; #endif /* 0 */ #define CLUTSize (256+4+4) /* types */ #define CLUT_MONO 0 #define CLUT_RED 1 #define CLUT_GREEN 2 #define CLUT_BLUE 3 #define CLUT_HUE 4 /* not supported */ #define CLUT_SAT 5 /* not supported */ /* IFF chunk IDs */ typedef unsigned long IFF_ID; #define MAKE_ID(a, b, c, d) ((IFF_ID)(a)<<24 | (IFF_ID)(b)<<16 | (IFF_ID)(c)<<8 | (IFF_ID)(d)) #define ID_FORM MAKE_ID('F', 'O', 'R', 'M') /* EA IFF 85 group identifier */ #define ID_CAT MAKE_ID('C', 'A', 'T', ' ') /* EA IFF 85 group identifier */ #define ID_LIST MAKE_ID('L', 'I', 'S', 'T') /* EA IFF 85 group identifier */ #define ID_PROP MAKE_ID('P', 'R', 'O', 'P') /* EA IFF 85 group identifier */ #define ID_END MAKE_ID('E', 'N', 'D', ' ') /* unofficial END-of-FORM identifier (see Amiga RKM Devices Ed.3 page 376) */ #define ID_ILBM MAKE_ID('I', 'L', 'B', 'M') /* EA IFF 85 raster bitmap form */ #define ID_DEEP MAKE_ID('D', 'E', 'E', 'P') /* Chunky pixel image files (Used in TV Paint) */ #define ID_RGB8 MAKE_ID('R', 'G', 'B', '8') /* RGB image forms, Turbo Silver (Impulse) */ #define ID_RGBN MAKE_ID('R', 'G', 'B', 'N') /* RGB image forms, Turbo Silver (Impulse) */ /* generic */ #define ID_FVER MAKE_ID('F', 'V', 'E', 'R') /* AmigaOS version string */ #define ID_JUNK MAKE_ID('J', 'U', 'N', 'K') /* always ignore this chunk */ #define ID_ANNO MAKE_ID('A', 'N', 'N', 'O') /* EA IFF 85 Generic Annotation chunk */ #define ID_AUTH MAKE_ID('A', 'U', 'T', 'H') /* EA IFF 85 Generic Author chunk */ #define ID_CHRS MAKE_ID('C', 'H', 'R', 'S') /* EA IFF 85 Generic character string chunk */ #define ID_NAME MAKE_ID('N', 'A', 'M', 'E') /* EA IFF 85 Generic Name of art, music, etc. chunk */ #define ID_TEXT MAKE_ID('T', 'E', 'X', 'T') /* EA IFF 85 Generic unformatted ASCII text chunk */ #define ID_copy MAKE_ID('(', 'c', ')', ' ') /* EA IFF 85 Generic Copyright text chunk */ /* ILBM chunks */ #define ID_BMHD MAKE_ID('B', 'M', 'H', 'D') /* ILBM BitmapHeader */ #define ID_CMAP MAKE_ID('C', 'M', 'A', 'P') /* ILBM 8bit RGB colormap */ #define ID_GRAB MAKE_ID('G', 'R', 'A', 'B') /* ILBM "hotspot" coordiantes */ #define ID_DEST MAKE_ID('D', 'E', 'S', 'T') /* ILBM destination image info */ #define ID_SPRT MAKE_ID('S', 'P', 'R', 'T') /* ILBM sprite identifier */ #define ID_CAMG MAKE_ID('C', 'A', 'M', 'G') /* Amiga viewportmodes */ #define ID_BODY MAKE_ID('B', 'O', 'D', 'Y') /* ILBM image data */ #define ID_CRNG MAKE_ID('C', 'R', 'N', 'G') /* color cycling */ #define ID_CCRT MAKE_ID('C', 'C', 'R', 'T') /* color cycling */ #define ID_CLUT MAKE_ID('C', 'L', 'U', 'T') /* Color Lookup Table chunk */ #define ID_DPI MAKE_ID('D', 'P', 'I', ' ') /* Dots per inch chunk */ #define ID_DPPV MAKE_ID('D', 'P', 'P', 'V') /* DPaint perspective chunk (EA) */ #define ID_DRNG MAKE_ID('D', 'R', 'N', 'G') /* DPaint IV enhanced color cycle chunk (EA) */ #define ID_EPSF MAKE_ID('E', 'P', 'S', 'F') /* Encapsulated Postscript chunk */ #define ID_CMYK MAKE_ID('C', 'M', 'Y', 'K') /* Cyan, Magenta, Yellow, & Black color map (Soft-Logik) */ #define ID_CNAM MAKE_ID('C', 'N', 'A', 'M') /* Color naming chunk (Soft-Logik) */ #define ID_PCHG MAKE_ID('P', 'C', 'H', 'G') /* Line by line palette control information (Sebastiano Vigna) */ #define ID_PRVW MAKE_ID('P', 'R', 'V', 'W') /* A mini duplicate ILBM used for preview (Gary Bonham) */ #define ID_XBMI MAKE_ID('X', 'B', 'M', 'I') /* eXtended BitMap Information (Soft-Logik) */ #define ID_CTBL MAKE_ID('C', 'T', 'B', 'L') /* Newtek Dynamic Ham color chunk */ #define ID_DYCP MAKE_ID('D', 'Y', 'C', 'P') /* Newtek Dynamic Ham chunk */ #define ID_SHAM MAKE_ID('S', 'H', 'A', 'M') /* Sliced HAM color chunk */ /* other stuff */ #define MAXPLANES 16 typedef unsigned short rawtype; #define MAXCMAPCOLORS (1 << MAXPLANES) #define MAXCOLVAL 255 /* max value of color component */