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Docs » Include » datatypes » pictureclass.h / .i
#ifndef	DATATYPES_PICTURECLASS_H
#define	DATATYPES_PICTURECLASS_H
/*
**  $VER: pictureclass.h 45.1 (23.10.2000)
**  Includes Release 45.1
**
**  Interface definitions for DataType picture objects.
**
**  Copyright  1992-2001 Amiga, Inc.
**	All Rights Reserved
*/

#ifndef	UTILITY_TAGITEM_H
#include <utility/tagitem.h>
#endif

#ifndef	DATATYPES_DATATYPESCLASS_H
#include <datatypes/datatypesclass.h>
#endif

#ifndef	LIBRARIES_IFFPARSE_H
#include <libraries/iffparse.h>
#endif

/*****************************************************************************/

#define	PICTUREDTCLASS "picture.datatype"

/*****************************************************************************/

/* Picture attributes */

/* Mode ID of the picture (ULONG) */
#define	PDTA_ModeID		(DTA_Dummy + 200)

/* Bitmap header information (struct BitMapHeader *) */
#define	PDTA_BitMapHeader	(DTA_Dummy + 201)

/* Pointer to a class-allocated bitmap, that will end
 * up being freed by picture.class when DisposeDTObject()
 * is called (struct BitMap *).
 */
#define	PDTA_BitMap		(DTA_Dummy + 202)

/* Picture colour table (struct ColorRegister *) */
#define	PDTA_ColorRegisters	(DTA_Dummy + 203)

/* Color table to use with SetRGB32CM() (ULONG *) */
#define	PDTA_CRegs		(DTA_Dummy + 204)

/* Color table; this table is initialized during the layout
 * process and will contain the colours the picture will use
 * after remapping. If no remapping takes place, these colours
 * will match those in the PDTA_CRegs table (ULONG *).
 */
#define	PDTA_GRegs		(DTA_Dummy + 205)

/* Shared pen table; this table is initialized during the layout
 * process while the picture is being remapped (UBYTE *).
 */
#define	PDTA_ColorTable		(DTA_Dummy + 206)

/* Shared pen table; in most places this table will be identical to
 * the PDTA_ColorTable table. Some of the colours in this table might
 * match the original colour palette a little better than the colours
 * picked for the other table. The picture.datatype uses the two tables
 * during remapping, alternating for each pixel (UBYTE *).
 */
#define	PDTA_ColorTable2	(DTA_Dummy + 207)

/* OBSOLETE; DO NOT USE */
#define	PDTA_Allocated		(DTA_Dummy + 208)

/* Number of colors used by the picture. (UWORD) */
#define	PDTA_NumColors		(DTA_Dummy + 209)

/* Number of colors allocated by the picture (UWORD) */
#define	PDTA_NumAlloc		(DTA_Dummy + 210)

/* Remap the picture (BOOL); defaults to TRUE */
#define	PDTA_Remap		(DTA_Dummy + 211)

/* Screen to remap to (struct Screen *) */
#define	PDTA_Screen		(DTA_Dummy + 212)

/* Free the source bitmap after remapping (BOOL) */
#define	PDTA_FreeSourceBitMap	(DTA_Dummy + 213)

/* Pointer to a Point structure */
#define	PDTA_Grab		(DTA_Dummy + 214)

/* Pointer to the destination (remapped) bitmap */
#define	PDTA_DestBitMap		(DTA_Dummy + 215)

/* Pointer to class-allocated bitmap, that will end
 * up being freed by the class after DisposeDTObject()
 * is called (struct BitMap *)
 */
#define	PDTA_ClassBitMap	(DTA_Dummy + 216)

/* Number of colors used for sparse remapping (UWORD) */
#define	PDTA_NumSparse		(DTA_Dummy + 217)

/* Pointer to a table of pen numbers indicating
 * which colors should be used when remapping the image.
 * This array must contain as many entries as there
 * are colors specified with PDTA_NumSparse (UBYTE *).
 */
#define	PDTA_SparseTable	(DTA_Dummy + 218)

/* Index number of the picture to load (ULONG). (V44) */
#define PDTA_WhichPicture	(DTA_Dummy + 219)

/* Get the number of pictures stored in the file (ULONG *). (V44) */
#define PDTA_GetNumPictures	(DTA_Dummy + 220)

/* Maximum number of colours to use for dithering (ULONG). (V44) */
#define PDTA_MaxDitherPens	(DTA_Dummy + 221)

/* Quality of the dithering algorithm to be used during colour
 * quantization (ULONG). (V44)
 */
#define PDTA_DitherQuality	(DTA_Dummy + 222)

/* Pointer to the allocated pen table (UBYTE *). (V44) */
#define PDTA_AllocatedPens	(DTA_Dummy + 223)

/* Quality for scaling. (V45) */
#define PDTA_ScaleQuality	(DTA_Dummy + 224)

/*****************************************************************************/

/* When querying the number of pictures stored in a file, the
 * following value denotes "the number of pictures is unknown".
 */
#define PDTANUMPICTURES_Unknown (0)

/*****************************************************************************/

/* V43 extensions (attributes) */

/* Set the sub datatype interface mode (LONG); see "Interface modes" below */
#define PDTA_SourceMode		(DTA_Dummy + 250)

/* Set the app datatype interface mode (LONG); see "Interface modes" below */
#define PDTA_DestMode		(DTA_Dummy + 251)

/* Allocates the resulting bitmap as a friend bitmap (BOOL) */
#define PDTA_UseFriendBitMap	(DTA_Dummy + 255)

/* NULL or mask plane for use with BltMaskBitMapRastPort() (PLANEPTR) */
#define PDTA_MaskPlane		(DTA_Dummy + 258)

/*****************************************************************************/

/* Interface modes */
#define PMODE_V42 (0)	/* Compatibility mode */
#define PMODE_V43 (1)	/* Extended mode */

/*****************************************************************************/

/* V43 extensions (methods) */

#define PDTM_Dummy (DTM_Dummy + 0x60)

/* Transfer pixel data to the picture object in the specified format */
#define PDTM_WRITEPIXELARRAY (PDTM_Dummy + 0)

/* Transfer pixel data from the picture object in the specified format */
#define PDTM_READPIXELARRAY (PDTM_Dummy + 1)

/* PDTM_WRITEPIXELARRAY, PDTM_READPIXELARRAY */
struct pdtBlitPixelArray
{
	ULONG	MethodID;
	APTR	pbpa_PixelData;		/* The pixel data to transfer to/from */
	ULONG	pbpa_PixelFormat;	/* Format of the pixel data (see "Pixel Formats" below) */
	ULONG	pbpa_PixelArrayMod;	/* Number of bytes per row */
	ULONG	pbpa_Left;		/* Left edge of the rectangle to transfer pixels to/from */
	ULONG	pbpa_Top;		/* Top edge of the rectangle to transfer pixels to/from */
	ULONG	pbpa_Width;		/* Width of the rectangle to transfer pixels to/from */
	ULONG	pbpa_Height;		/* Height of the rectangle to transfer pixels to/from */
};

/* Pixel formats */
#define PBPAFMT_RGB	0	/* 3 bytes per pixel (red, green, blue) */
#define PBPAFMT_RGBA	1	/* 4 bytes per pixel (red, green, blue, alpha channel) */
#define PBPAFMT_ARGB	2	/* 4 bytes per pixel (alpha channel, red, green, blue) */
#define PBPAFMT_LUT8	3	/* 1 byte per pixel (using a separate colour map) */
#define PBPAFMT_GREY8	4	/* 1 byte per pixel (0==black, 255==white) */

/*****************************************************************************/

/* V45 extensions (methods) */

/* Scale pixel data to the specified size */
#define PDTM_SCALE (PDTM_Dummy + 2)

/* PDTM_SCALE */
struct pdtScale
{
	ULONG MethodID;
	ULONG ps_NewWidth;	/* The new width the pixel data should have */
	ULONG ps_NewHeight;	/* The new height the pixel data should have */
	ULONG ps_Flags;		/* should be 0 for now */
};

/*****************************************************************************/

/* Masking techniques */
#define	mskNone			0
#define	mskHasMask		1
#define	mskHasTransparentColor	2
#define	mskLasso		3
#define	mskHasAlpha		4

/* Compression techniques */
#define	cmpNone			0
#define	cmpByteRun1		1
#define	cmpByteRun2		2	/* NOTE: unused (V44) */

/* Bitmap header (BMHD) structure */
struct BitMapHeader
{
	UWORD	bmh_Width;		/* Width in pixels */
	UWORD	bmh_Height;		/* Height in pixels */
	WORD	bmh_Left;		/* Left position */
	WORD	bmh_Top;		/* Top position */
	UBYTE	bmh_Depth;		/* Number of planes */
	UBYTE	bmh_Masking;		/* Masking type */
	UBYTE	bmh_Compression;	/* Compression type */
	UBYTE	bmh_Pad;
	UWORD	bmh_Transparent;	/* Transparent color */
	UBYTE	bmh_XAspect;
	UBYTE	bmh_YAspect;
	WORD	bmh_PageWidth;
	WORD	bmh_PageHeight;
};

/*****************************************************************************/

/* Color register structure */
struct ColorRegister
{
	UBYTE red, green, blue;
};

/*****************************************************************************/

/* IFF types that may be in pictures */
#define	ID_ILBM	MAKE_ID('I','L','B','M')
#define	ID_BMHD	MAKE_ID('B','M','H','D')
#define	ID_CMAP	MAKE_ID('C','M','A','P')
#define	ID_CRNG	MAKE_ID('C','R','N','G')
#define	ID_GRAB	MAKE_ID('G','R','A','B')
#define	ID_SPRT	MAKE_ID('S','P','R','T')
#define	ID_DEST	MAKE_ID('D','E','S','T')
#define	ID_CAMG	MAKE_ID('C','A','M','G')

#ifndef ID_BODY
#define	ID_BODY	MAKE_ID('B','O','D','Y')
#endif /* ID_BODY */

#endif	/* DATATYPES_PICTURECLASS_H */

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