Leaked source code of windows server 2003
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/*
** Copyright (c) 1992 Microsoft Corporation*/
/*============================================================================
// FILE RPBMVER.C
//
// MODULE Jumbo Cartridge Code
//
// PURPOSE This file contains Vertical Bitmap Code
//
// DESCRIBED IN This module is described in jumbo .
//
// MNEMONICS Standard Hungarian
//
// HISTORY
//
// 05/26/92 RodneyK Original implimentation:
// 05/11/94 RajeevD Adapted for unified.
//==========================================================================*/
#include <windows.h>
#include "jtypes.h" /* Jumbo type definitions. */
/*--------------------------------------------------------------------------*/
USHORT WINAPI RP_BITMAPV( USHORT usRow, /* Row to start Bitmap */ USHORT usCol, /* Column to Start Bitmap */ UBYTE ubTopPadBits, /* Bits to skip in the data stream */ USHORT usHeight, /* Number of bits to draw */ UBYTE FAR *ubBitmapData, /* Data to draw */ LPBYTE lpbOut, // output band buffer
UINT cbLine // bytes per scan line
)/*
//
// PURPOSE This function draws vertical bitmaps in source
// copy mode.
//
//
// ASSUMPTIONS & The code assumes nothing other than it gets valid
// ASSERTIONS input data.
//
//
// INTERNAL STRUCTURES No complex internal data structure are used
//
// UNRESOLVED ISSUES None
//
//
//--------------------------------------------------------------------------*/
{ UBYTE *pubDest; SHORT sIterations; USHORT usReturnVal; USHORT us1stByte; UBYTE ubMask; UBYTE ubNotMask; UBYTE ubRotator; UBYTE ubCurByte;
usReturnVal = (ubTopPadBits + usHeight + 7) >> 3;
pubDest = (UBYTE *) lpbOut + (usRow * cbLine) + (usCol >> 3); ubMask = 0x80 >> (usCol & 7); ubNotMask = ~ubMask;
ubCurByte = *ubBitmapData++; us1stByte = 8-ubTopPadBits;
ubRotator = 0x80 >> ubTopPadBits; switch (us1stByte) { case 8 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; if ( !(--usHeight) ) break; case 7 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; if ( !(--usHeight) ) break; case 6 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; if ( !(--usHeight) ) break; case 5 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; if ( !(--usHeight) ) break; case 4 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; if ( !(--usHeight) ) break; case 3 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; if ( !(--usHeight) ) break; case 2 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; if ( !(--usHeight) ) break; case 1 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; --usHeight; default: break; }
ubCurByte = *ubBitmapData++; sIterations = usHeight >> 3;
while (--sIterations >= 0) { /* 1 */ *pubDest = (0x80 & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; /* 2 */ *pubDest = (0x40 & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; /* 3 */ *pubDest = (0x20 & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; /* 4 */ *pubDest = (0x10 & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; /* 5 */ *pubDest = (0x08 & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; /* 6 */ *pubDest = (0x04 & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; /* 7 */ *pubDest = (0x02 & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; /* 8 */ *pubDest = (0x01 & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine;
ubCurByte = *ubBitmapData++; }
ubRotator = 0x80; switch (usHeight & 0x07) { case 7 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; case 6 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; case 5 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; case 4 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; case 3 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; case 2 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; case 1 : *pubDest = (ubRotator & ubCurByte) ? (*pubDest & ubNotMask) | ubMask : (*pubDest & ubNotMask); pubDest -= cbLine; ubRotator >>= 1; default: break; }
return (usReturnVal); /* Return the number of byte in the list */}
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