Leaked source code of windows server 2003
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/******************************Module*Header*******************************\
* Module Name: trivblt.hxx** This contains the prototypes for the Src-Copy BitBlt code** Created: 06-Feb-1991 11:36:01* Author: Patrick Haluptzok patrickh** Copyright (c) 1991-1999 Microsoft Corporation*\**************************************************************************/
#define MESSAGE_BLT 0 // Put this around DbgPrint
#define DEBUG_BLT 1 // This is for non-printing debug stuff
// We pass a pointer to this data struct for every rectangle we blt to.
struct BLTINFO{ XLATE *pxlo; // Xlate object for color translation
PBYTE pjSrc; // Src scanline begining
PBYTE pjDst; // Destination scanline begining
LONG xDir; // This tells which direction we go
LONG cx; // This is the number of pels wide
LONG cy; // This is the number of rows in rectangle
LONG yDir; // This tells which direction we go
LONG lDeltaSrc; // Pointer increment to the next source scan line
LONG lDeltaDst; // Pointer increment to the next destination scan line
LONG xSrcStart; // Left edge column of the source
LONG xSrcEnd; // Right edge column of the source
LONG xDstStart; // Starting column on the destination map. This is
// the left edge for an RLE.
LONG yDstStart; // Starting scanline on the destination map.
LONG fSrcAlignedRd;// Do source aligned reads flags.
/* Information only used in RLE blts */
SURFACE *pdioSrc; // Pointer to the source surface object
POINTL ptlSrc; // The starting point in the source map.
RECTL rclDst; // Visible rectangle in the target map.
PBYTE pjSrcEnd; // Ending position in the source map.
PBYTE pjDstEnd; // Ending position in the target map.
ULONG ulConsumed;// Total number of source bytes consumed.
ULONG ulEndConsumed; // Ending number of source bytes consumed
LONG ulOutCol; // Starting output column of the bitmap.
ULONG ulEndRow; // Ending scanline on the destination map.
LONG ulEndCol; // Ending column on the destination map.
ULONG iFormatSrc; ULONG iFormatDst; ULONG TransparentColor; // transparent color of the source
BLTINFO() { fSrcAlignedRd = FALSE; }};
typedef BLTINFO *PBLTINFO;#define BB_RECT_LIMIT 20
// These are the prototypes for the special case SrcCopy
VOID vSrcCopyS1D1LtoR (PBLTINFO);VOID vSrcCopyS1D1RtoL (PBLTINFO);VOID vSrcCopyS4D1 (PBLTINFO);VOID vSrcCopyS8D1 (PBLTINFO);VOID vSrcCopyS16D1 (PBLTINFO);VOID vSrcCopyS24D1 (PBLTINFO);VOID vSrcCopyS32D1 (PBLTINFO);
VOID vSrcCopyS1D4 (PBLTINFO);VOID vSrcCopyS4D4 (PBLTINFO);VOID vSrcCopyS4D4Identity (PBLTINFO);VOID vSrcCopyS8D4 (PBLTINFO);VOID vSrcCopyS16D4 (PBLTINFO);VOID vSrcCopyS24D4 (PBLTINFO);VOID vSrcCopyS32D4 (PBLTINFO);
VOID vSrcCopyS1D8 (PBLTINFO);VOID vSrcCopyS4D8 (PBLTINFO);VOID vSrcCopyS8D8 (PBLTINFO);VOID vSrcCopyS8D8IdentityLtoR (PBLTINFO);VOID vSrcCopyS8D8IdentityRtoL (PBLTINFO);VOID vSrcCopyS16D8 (PBLTINFO);VOID vSrcCopyS24D8 (PBLTINFO);VOID vSrcCopyS32D8 (PBLTINFO);
VOID vSrcCopyS1D16 (PBLTINFO);VOID vSrcCopyS4D16 (PBLTINFO);VOID vSrcCopyS8D16 (PBLTINFO);VOID vSrcCopyS16D16 (PBLTINFO);VOID vSrcCopyS16D16Identity (PBLTINFO);VOID vSrcCopyS24D16 (PBLTINFO);VOID vSrcCopyS32D16 (PBLTINFO);
VOID vSrcCopyS1D24 (PBLTINFO);VOID vSrcCopyS4D24 (PBLTINFO);VOID vSrcCopyS8D24 (PBLTINFO);VOID vSrcCopyS16D24 (PBLTINFO);VOID vSrcCopyS24D24 (PBLTINFO);VOID vSrcCopyS24D24Identity (PBLTINFO);VOID vSrcCopyS32D24 (PBLTINFO);
VOID vSrcCopyS1D32 (PBLTINFO);VOID vSrcCopyS4D32 (PBLTINFO);VOID vSrcCopyS8D32 (PBLTINFO);VOID vSrcCopyS16D32 (PBLTINFO);VOID vSrcCopyS24D32 (PBLTINFO);VOID vSrcCopyS32D32 (PBLTINFO);VOID vSrcCopyS32D32Identity (PBLTINFO);
/* Run Length Encoded Bitmap blt functions */
BOOL bSrcCopySRLE8D1 (PBLTINFO);BOOL bSrcCopySRLE8D4 (PBLTINFO);BOOL bSrcCopySRLE8D8 (PBLTINFO);BOOL bSrcCopySRLE8D16 (PBLTINFO);BOOL bSrcCopySRLE8D24 (PBLTINFO);BOOL bSrcCopySRLE8D32 (PBLTINFO);
BOOL bSrcCopySRLE4D1 (PBLTINFO);BOOL bSrcCopySRLE4D4 (PBLTINFO);BOOL bSrcCopySRLE4D8 (PBLTINFO);BOOL bSrcCopySRLE4D16 (PBLTINFO);BOOL bSrcCopySRLE4D24 (PBLTINFO);BOOL bSrcCopySRLE4D32 (PBLTINFO);
/* blt Function selectors */
typedef VOID (*PFN_SRCCPY)(PBLTINFO);typedef BOOL (*PFN_RLECPY)(PBLTINFO);
PFN_RLECPYpfnGetRLESrcCopy( /* Chooses the blt function, RLE source */ ULONG iFormatSrc, ULONG iFormatDst);
//
// Structures and functions for StrDir
//
typedef struct _STR_BLT { PBYTE pjSrcScan; LONG lDeltaSrc; LONG XSrcStart; PBYTE pjDstScan; LONG lDeltaDst; LONG XDstStart; LONG XDstEnd; LONG YDstCount; ULONG ulXDstToSrcIntCeil; ULONG ulXDstToSrcFracCeil; ULONG ulYDstToSrcIntCeil; ULONG ulYDstToSrcFracCeil; ULONG ulXFracAccumulator; ULONG ulYFracAccumulator;} STR_BLT,*PSTR_BLT;
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