/******************************Module*Header*******************************\
* Module Name: srcblt24.cxx
*
* This contains the bitmap simulation functions that blt to a 24 bit/pel
* DIB surface.
*
* Created: 07-Feb-1991 19:27:49
* Author: Patrick Haluptzok patrickh
*
* Copyright (c) 1990 Microsoft Corporation
*
\**************************************************************************/

#include "precomp.hxx"

/*******************Public*Routine*****************\
* vSrcCopyS1D24
*
* There are three main loops in this function.
*
* The first loop deals with the full byte part mapping
* the Dst while fetching/shifting the matching 8 bits
* from the Src.
*
* The second loop deals with the left starting
* pixels.
*
* The third loop deals with the ending pixels.
*
* For the full bytes, we walk thru Src one byte at a time
* and expand to Dst.
*
* We expand the starting/ending pixels one bit
* at a time.
*
* History:
* 17-Oct-1994 -by- Lingyun Wang [lingyunw]
* Wrote it.
\**************************************************/

VOID vSrcCopyS1D24(PBLTINFO psb)
{
    // We assume we are doing left to right top to bottom blting

    ASSERTGDI(psb->xDir == 1, "vSrcCopyS1D24 - direction not left to right");
    ASSERTGDI(psb->yDir == 1, "vSrcCopyS1D24 - direction not up to down");

    BYTE  jSrc;    // holds a source byte
    INT   iDst;    // Position in the first 8 Dst units
    INT   iSrc;    // bit position in the first Src byte
    PBYTE pjDst;
    PBYTE pjSrc;   // pointer to the Dst bytes
    LONG  xSrcEnd = psb->xSrcEnd;
    LONG  cy;      // number of rows
    LONG  cx;      // number of pixels
    BYTE  jAlignL;  // alignment bits to the left
    BYTE  jAlignR;  // alignment bits to the right
    LONG  cFullBytes;  //number of full 8 bytes dealed with
    BOOL  bNextByte;
    LONG  xDstEnd = psb->xDstStart+psb->cx;
    LONG  lDeltaDst;
    LONG  lDeltaSrc;
    ULONG ulB = (ULONG)(psb->pxlo->pulXlate[0]);
    ULONG ulF = (ULONG)(psb->pxlo->pulXlate[1]);
    UCHAR aucTable[8];
    INT   count;
    PBYTE pjTable;
    BOOL  bNextSrc=TRUE;

    ASSERTGDI(psb->cy != 0, "ERROR: Src Move cy == 0");

    //DbgPrint ("vsrccopys1d24\n");

    // Generate ulTable. 2 entries.
    ULONG ulValB = ulB;
    ULONG ulValF = ulF;

    *(PULONG) aucTable = ulValB;
    *(PULONG) (aucTable+4) = ulValF;

    //Get Src and Dst start positions
    iSrc = psb->xSrcStart & 0x0007;
    iDst = psb->xDstStart & 0x0007;

    if (iSrc < iDst)
        jAlignL = 8 - (iDst - iSrc);
    // If Dst starting point is ahead of Src
    else
        jAlignL = iSrc - iDst;

    jAlignR = 8 - jAlignL;

    cx=psb->cx;

    lDeltaDst = psb->lDeltaDst;
    lDeltaSrc = psb->lDeltaSrc;

    // if there is a next 8 dwords
    bNextByte = !((xDstEnd>>3) ==
                 (psb->xDstStart>>3));

    // if Src and Dst are aligned, use a separete loop
    // to obtain better performance;
    // If not, we shift the Src bytes to match with
    // the Dst - 1 bit expand to 3 bytes

    if (bNextByte)
    {
        long iStrideSrc;
        long iStrideDst;
        PBYTE pjSrcEnd;

        // Get first Dst full 8 dwords
        pjDst = psb->pjDst + 3*((psb->xDstStart+7)&~0x07);

        // Get the Src byte that matches the first Dst
        // full 8 bytes
        pjSrc = psb->pjSrc + (psb->xSrcStart+((8-iDst)&0x07) >> 3);

        //Get the number of full bytes to expand
        cFullBytes = (xDstEnd>>3)-((psb->xDstStart+7)>>3);

        //the increment to the full byte on the next scan line
        iStrideDst = lDeltaDst - cFullBytes*8*3;
        iStrideSrc = lDeltaSrc - cFullBytes;

        // deal with our special case
        cy = psb->cy;

        if (!jAlignL)
        {
            while (cy--)
            {
                pjSrcEnd = pjSrc + cFullBytes;

                while (pjSrc != pjSrcEnd)
                {
                    jSrc = *pjSrc++;

                    pjTable = aucTable + ((jSrc & 0x80) >> (7-2));

                    *(pjDst + 0) = *pjTable;
                    *(pjDst + 1) = *(pjTable+1);
                    *(pjDst + 2) = *(pjTable+2);

                    pjTable = aucTable + ((jSrc & 0x40) >> (6-2));

                    *(pjDst + 3) = *pjTable;
                    *(pjDst + 4) = *(pjTable+1);
                    *(pjDst + 5) = *(pjTable+2);

                    pjTable = aucTable + ((jSrc & 0x20) >> (5-2));

                    *(pjDst + 6) = *pjTable;
                    *(pjDst + 7) = *(pjTable+1);
                    *(pjDst + 8) = *(pjTable+2);

                    pjTable = aucTable + ((jSrc & 0x10) >> (4-2));

                    *(pjDst + 9) = *pjTable;
                    *(pjDst + 10) = *(pjTable+1);
                    *(pjDst + 11) = *(pjTable+2);

                    pjTable = aucTable + ((jSrc & 0x08) >> (3-2));

                    *(pjDst + 12) = *pjTable;
                    *(pjDst + 13) = *(pjTable+1);
                    *(pjDst + 14) = *(pjTable+2);

                    pjTable = aucTable + (jSrc & 0x04);

                    *(pjDst + 15) = *pjTable;
                    *(pjDst + 16) = *(pjTable+1);
                    *(pjDst + 17) = *(pjTable+2);

                    pjTable = aucTable + ((jSrc & 0x02) << 1);

                    *(pjDst + 18) = *pjTable;
                    *(pjDst + 19) = *(pjTable+1);
                    *(pjDst + 20) = *(pjTable+2);

                    pjTable = aucTable + ((jSrc & 0x01) << 2);

                    *(pjDst + 21) = *pjTable;
                    *(pjDst + 22) = *(pjTable+1);
                    *(pjDst + 23) = *(pjTable+2);

                    pjDst +=3*8;
                }

                pjDst += iStrideDst;
                pjSrc += iStrideSrc;
            }

        }   //end of if (!jAlignL)

        else  // if not aligned
        // Here comes our general case for the main full
        // bytes part
        {
            BYTE jRem; //remainder

            while (cy--)
            {
                jRem = *pjSrc << jAlignL;

                pjSrcEnd = pjSrc + cFullBytes;

                while (pjSrc != pjSrcEnd)
                {
                    jSrc = ((*(++pjSrc))>>jAlignR) | jRem;

                    pjTable = aucTable + ((jSrc & 0x80) >> (7-2));

                    *(pjDst + 0) = *pjTable;
                    *(pjDst + 1) = *(pjTable+1);
                    *(pjDst + 2) = *(pjTable+2);

                    pjTable = aucTable + ((jSrc & 0x40) >> (6-2));

                    *(pjDst + 3) = *pjTable;
                    *(pjDst + 4) = *(pjTable+1);
                    *(pjDst + 5) = *(pjTable+2);

                    pjTable = aucTable + ((jSrc & 0x20) >> (5-2));

                    *(pjDst + 6) = *pjTable;
                    *(pjDst + 7) = *(pjTable+1);
                    *(pjDst + 8) = *(pjTable+2);

                    pjTable = aucTable + ((jSrc & 0x10) >> (4-2));

                    *(pjDst + 9) = *pjTable;
                    *(pjDst + 10) = *(pjTable+1);
                    *(pjDst + 11) = *(pjTable+2);

                    pjTable = aucTable + ((jSrc & 0x08) >> (3-2));

                    *(pjDst + 12) = *pjTable;
                    *(pjDst + 13) = *(pjTable+1);
                    *(pjDst + 14) = *(pjTable+2);

                    pjTable = aucTable + (jSrc & 0x04);

                    *(pjDst + 15) = *pjTable;
                    *(pjDst + 16) = *(pjTable+1);
                    *(pjDst + 17) = *(pjTable+2);

                    pjTable = aucTable + ((jSrc & 0x02) << 1);

                    *(pjDst + 18) = *pjTable;
                    *(pjDst + 19) = *(pjTable+1);
                    *(pjDst + 20) = *(pjTable+2);

                    pjTable = aucTable + ((jSrc & 0x01) << 2);

                    *(pjDst + 21) = *pjTable;
                    *(pjDst + 22) = *(pjTable+1);
                    *(pjDst + 23) = *(pjTable+2);

                    pjDst +=3*8;

                    //next remainder
                    jRem = *pjSrc << jAlignL;
                }

                // go to the beginging full byte of
                // next scan line
                pjDst += iStrideDst;
                pjSrc += iStrideSrc;
            }
        } //else
    } //if
    // End of our dealing with the full bytes

    // Begin dealing with the left strip of the
    // starting pixels

    if (!bNextByte)
    {
        count = cx;
        bNextSrc = ((iSrc+cx) > 8);
    }
    else
        count = 8-iDst;

    if (iDst | !bNextByte)
    {
        PBYTE pjDstTemp;
        PBYTE pjDstEnd;

        pjDst = psb->pjDst + 3*psb->xDstStart;
        pjSrc = psb->pjSrc + (psb->xSrcStart>>3);

        cy = psb->cy;

        if (iSrc > iDst)
        {
            if (bNextSrc)
            {
                while (cy--)
                {
                    jSrc = *pjSrc << jAlignL;
                    jSrc |= *(pjSrc+1) >> jAlignR;

                    jSrc <<= iDst;

                    pjDstTemp = pjDst;
                    pjDstEnd = pjDst + 3*count;

                    while (pjDstTemp != pjDstEnd)
                    {
                        pjTable = aucTable + ((jSrc & 0x80) >> (7-2));

                        *(pjDstTemp + 0) = *pjTable;
                        *(pjDstTemp + 1) = *(pjTable+1);
                        *(pjDstTemp + 2) = *(pjTable+2);

                        jSrc <<= 1;
                        pjDstTemp += 3;
                    }

                    pjDst += lDeltaDst;
                    pjSrc += lDeltaSrc;
                }
            }
            else
            {
                while (cy--)
                {
                    jSrc = *pjSrc << jAlignL;

                    jSrc <<= iDst;

                    pjDstTemp = pjDst;
                    pjDstEnd = pjDst + 3*count;

                    while (pjDstTemp != pjDstEnd)
                    {
                        pjTable = aucTable + ((jSrc & 0x80) >> (7-2));

                        *(pjDstTemp + 0) = *pjTable;
                        *(pjDstTemp + 1) = *(pjTable+1);
                        *(pjDstTemp + 2) = *(pjTable+2);

                        jSrc <<= 1;
                        pjDstTemp += 3;
                    }

                    pjDst += lDeltaDst;
                    pjSrc += lDeltaSrc;
                }
            }

        }
        else //if (iSrc <= iDst)
        {
            while (cy--)
            {
                jSrc = *pjSrc << iSrc;

                pjDstTemp = pjDst;
                pjDstEnd = pjDst + 3*count;

                while (pjDstTemp != pjDstEnd)
                {
                    pjTable = aucTable + ((jSrc & 0x80) >> (7-2));

                    *(pjDstTemp + 0) = *pjTable;
                    *(pjDstTemp + 1) = *(pjTable+1);
                    *(pjDstTemp + 2) = *(pjTable+2);

                    jSrc <<= 1;
                    pjDstTemp += 3;

                }

                pjDst += lDeltaDst;
                pjSrc += lDeltaSrc;
            }

        }

   } //if

   // Begin dealing with the right edge
   // of partial 8 bytes
   // first check if there is any partial
   // byte left
   // and has next 8 bytes

   if ((xDstEnd & 0x0007)
       && bNextByte)
   {
        PBYTE pjDstTemp;
        PBYTE pjDstEnd;

        // Get the last partial bytes on the
        // scan line
        pjDst = psb->pjDst+ 3*(xDstEnd&~0x07);

        // Get the Src byte that matches the
        // right partial Dst 8 bytes
        pjSrc = psb->pjSrc + ((psb->xSrcEnd-1) >>3);

        // Get the ending position in the last
        // Src and Dst bytes
        iSrc = (psb->xSrcEnd-1) & 0x0007;
        iDst = (xDstEnd-1) & 0x0007;

        count = iDst+1;

        cy = psb->cy;

        if (iSrc >= iDst)
        {
            while (cy--)
            {
                jSrc = *pjSrc << jAlignL;

                pjDstTemp = pjDst;
                pjDstEnd = pjDst + 3*count;

                while (pjDstTemp != pjDstEnd)
                {
                    pjTable = aucTable + ((jSrc & 0x80) >> (7-2));

                    *(pjDstTemp + 0) = *pjTable;
                    *(pjDstTemp + 1) = *(pjTable+1);
                    *(pjDstTemp + 2) = *(pjTable+2);

                    jSrc <<= 1;
                    pjDstTemp += 3;

                }

                pjDst += lDeltaDst;
                pjSrc += lDeltaSrc;
            }
        }
        else //if (iSrc < iDst)
        {
            while (cy--)
            {
                 jSrc = *(pjSrc-1) << jAlignL;

                 jSrc |= *pjSrc >> jAlignR;

                 pjDstTemp = pjDst;
                 pjDstEnd = pjDst + 3*count;

                 while (pjDstTemp != pjDstEnd)
                 {
                     pjTable = aucTable + ((jSrc & 0x80) >> (7-2));

                     *(pjDstTemp + 0) = *pjTable;
                     *(pjDstTemp + 1) = *(pjTable+1);
                     *(pjDstTemp + 2) = *(pjTable+2);

                     jSrc <<= 1;
                     pjDstTemp += 3;

                 }

                 pjDst += lDeltaDst;
                 pjSrc += lDeltaSrc;
            }
        }
    } //if
}


/******************************Public*Routine******************************\
* vSrcCopyS4D24
*
*
* History:
*  18-Feb-1991 -by- Patrick Haluptzok patrickh
* Wrote it.
\**************************************************************************/

VOID vSrcCopyS4D24(PBLTINFO psb)
{
// We assume we are doing left to right top to bottom blting

    ASSERTGDI(psb->xDir == 1, "vSrcCopyS4D24 - direction not left to right");
    ASSERTGDI(psb->yDir == 1, "vSrcCopyS4D24 - direction not up to down");

    BYTE  jSrc;
    ULONG ulDst;
    LONG  i;
    PBYTE pjDstTemp;
    PBYTE pjSrcTemp;
    PBYTE pjDst  = psb->pjDst + (psb->xDstStart * 3);
    PBYTE pjSrc  = psb->pjSrc + (psb->xSrcStart >> 1);
    ULONG cy = psb->cy;
    PULONG pulXlate = psb->pxlo->pulXlate;

    ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");

    while(1)
    {
        pjDstTemp  = pjDst;
        pjSrcTemp  = pjSrc;

        i = psb->xSrcStart;

        if (i & 0x00000001)
            jSrc = *(pjSrcTemp++);

        while(i != psb->xSrcEnd)
        {
            if (i & 0x00000001)
                ulDst = pulXlate[jSrc & 0x0F];
            else
            {
            // We need a new byte

                jSrc = *(pjSrcTemp++);
                ulDst = pulXlate[(((ULONG) (jSrc & 0xF0)) >> 4)];
            }

        // Write ulDst into memory.

            *(pjDstTemp++) = (BYTE) ulDst;
            *(pjDstTemp++) = (BYTE) (ulDst >> 8);
            *(pjDstTemp++) = (BYTE) (ulDst >> 16);

            ++i;
        }

        if (--cy)
        {
            pjSrc += psb->lDeltaSrc;
            pjDst += psb->lDeltaDst;
        }
        else
            break;
    }
}

/******************************Public*Routine******************************\
* vSrcCopyS8D24
*
*
* History:
*  18-Feb-1991 -by- Patrick Haluptzok patrickh
* Wrote it.
\**************************************************************************/

VOID vSrcCopyS8D24(PBLTINFO psb)
{
// We assume we are doing left to right top to bottom blting.
// If it was on the same surface we would be doing the identity case.

    ASSERTGDI(psb->xDir == 1, "vSrcCopyS8D24 - direction not left to right");
    ASSERTGDI(psb->yDir == 1, "vSrcCopyS8D24 - direction not up to down");

// These are our holding variables

#if MESSAGE_BLT
    DbgPrint("Now entering vSrcCopyS8D24\n");
#endif

    ULONG ulDst;
    PBYTE pjSrcTemp;
    PBYTE pjDstTemp;
    ULONG  cxTemp;
    PBYTE pjSrc  = psb->pjSrc + psb->xSrcStart;
    PBYTE pjDst  = psb->pjDst + (psb->xDstStart * 3);
    ULONG cx     = psb->cx;
    ULONG cy     = psb->cy;
    PULONG pulXlate = psb->pxlo->pulXlate;

#if MESSAGE_BLT
    DbgPrint("xdir: %ld  cy: %lu  xSrcStart %lu  xDstStart %lu xSrcEnd %lu cx %lu\n",
             psb->xDir, cy, psb->xSrcStart, psb->xDstStart, psb->xSrcEnd, cx);
#endif

    ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");

    while(1)
    {
        pjSrcTemp  = pjSrc;
        pjDstTemp  = pjDst;
        cxTemp     = cx;

        while(cxTemp--)
        {
            ulDst = pulXlate[((ULONG) *(pjSrcTemp++))];

            *(pjDstTemp++) = (BYTE) ulDst;
            *(pjDstTemp++) = (BYTE) (ulDst >> 8);
            *(pjDstTemp++) = (BYTE) (ulDst >> 16);
        }

    // This check in the blt code will protect us from someone goofing
    // up bitmap initialization or bitblt initialization.

        if (--cy)
        {
            pjSrc += psb->lDeltaSrc;
            pjDst += psb->lDeltaDst;
        }
        else
            break;
    }
}

/******************************Public*Routine******************************\
* vSrcCopyS16D24
*
*
* History:
*  07-Feb-1991 -by- Patrick Haluptzok patrickh
* Wrote it.
\**************************************************************************/
VOID vSrcCopyS16D24(PBLTINFO psb)
{
// We assume we are doing left to right top to bottom blting

    ASSERTGDI(psb->xDir == 1, "vSrcCopyS16D24 - direction not left to right");
    ASSERTGDI(psb->yDir == 1, "vSrcCopyS16D24 - direction not up to down");

// These are our holding variables

    ULONG ulDst;
    PUSHORT pusSrcTemp;
    PBYTE pjDstTemp;
    ULONG  cxTemp;
    PUSHORT pusSrc  = (PUSHORT) (psb->pjSrc + (2 * psb->xSrcStart));
    PBYTE pjDst  = psb->pjDst + (psb->xDstStart * 3);
    ULONG cx     = psb->cx;
    ULONG cy     = psb->cy;
    XLATE *pxlo = psb->pxlo;

    ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");

    while(1)
    {
        pusSrcTemp  = pusSrc;
        pjDstTemp  = pjDst;
        cxTemp     = cx;

        while(cxTemp--)
        {
            ulDst = pxlo->ulTranslate((ULONG) *(pusSrcTemp++));

            *(pjDstTemp++) = (BYTE) ulDst;
            *(pjDstTemp++) = (BYTE) (ulDst >> 8);
            *(pjDstTemp++) = (BYTE) (ulDst >> 16);
        }

        if (--cy)
        {
            pusSrc = (PUSHORT) (((PBYTE) pusSrc) + psb->lDeltaSrc);
            pjDst += psb->lDeltaDst;
        }
        else
            break;
    }
}

/******************************Public*Routine******************************\
* vSrcCopyS24D24
*
*
* History:
*  18-Feb-1991 -by- Patrick Haluptzok patrickh
* Wrote it.
\**************************************************************************/

VOID vSrcCopyS24D24(PBLTINFO psb)
{
// We assume we are doing left to right top to bottom blting

    ASSERTGDI(psb->xDir == 1, "vSrcCopyS24D24 - direction not left to right");
    ASSERTGDI(psb->yDir == 1, "vSrcCopyS24D24 - direction not up to down");

// These are our holding variables

#if MESSAGE_BLT
    DbgPrint("Now entering vSrcCopyS8D24\n");
#endif

    ULONG ulDink;  // variable to dink around with the bytes in
    PBYTE pjSrcTemp;
    PBYTE pjDstTemp;
    ULONG  cxTemp;
    PBYTE pjSrc  = psb->pjSrc + (psb->xSrcStart * 3);
    PBYTE pjDst  = psb->pjDst + (psb->xDstStart * 3);
    ULONG cx     = psb->cx;
    ULONG cy     = psb->cy;
    XLATE *pxlo = psb->pxlo;

    ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");

    while(1)
    {

        pjSrcTemp  = pjSrc;
        pjDstTemp  = pjDst;
        cxTemp     = cx;

        while(cxTemp--)
        {
            ulDink = (ULONG) *(pjSrcTemp + 2);
            ulDink = ulDink << 8;
            ulDink |= (ULONG) *(pjSrcTemp + 1);
            ulDink = ulDink << 8;
            ulDink |= (ULONG) *pjSrcTemp;

            ulDink = pxlo->ulTranslate(ulDink);

            *(pjDstTemp++) = (BYTE) ulDink;
            *(pjDstTemp++) = (BYTE) (ulDink >> 8);
            *(pjDstTemp++) = (BYTE) (ulDink >> 16);

            pjSrcTemp += 3;
        }

        if (--cy)
        {
            pjSrc += psb->lDeltaSrc;
            pjDst += psb->lDeltaDst;
        }
        else
            break;
    }
}

/******************************Public*Routine******************************\
* vSrcCopyS24D24Identity
*
* This is the special case no translate blting.  All the SmDn should have
* them if m==n.  Identity xlates only occur amoung matching format bitmaps
* and screens.
*
* History:
*  18-Feb-1991 -by- Patrick Haluptzok patrickh
* Wrote it.
\**************************************************************************/

VOID vSrcCopyS24D24Identity(PBLTINFO psb)
{
    PBYTE pjSrc  = psb->pjSrc + (psb->xSrcStart * 3);
    PBYTE pjDst  = psb->pjDst + (psb->xDstStart * 3);
    ULONG cx     = psb->cx * 3;
    ULONG cy     = psb->cy;

    ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");

#if MESSAGE_BLT
    DbgPrint("xdir: %ld  cy: %lu  xSrcStart %lu  xDstStart %lu xSrcEnd %lu cx %lu\n",
             psb->xDir, cy, psb->xSrcStart, psb->xDstStart, psb->xSrcEnd, cx);
#endif

    if (psb->xDir < 0)
    {
        pjSrc -= (cx - 3);
        pjDst -= (cx - 3);
    }

    while(1)
    {
        RtlMoveMemory((PVOID)pjDst, (PVOID)pjSrc, cx);

        if (--cy)
        {
            pjSrc += psb->lDeltaSrc;
            pjDst += psb->lDeltaDst;
        }
        else
            break;
    }
}

/******************************Public*Routine******************************\
* vSrcCopyS32D24
*
*
* History:
*  07-Feb-1991 -by- Patrick Haluptzok patrickh
* Wrote it.
\**************************************************************************/
VOID vSrcCopyS32D24(PBLTINFO psb)
{
// We assume we are doing left to right top to bottom blting

    ASSERTGDI(psb->xDir == 1, "vSrcCopyS32D24 - direction not left to right");
    ASSERTGDI(psb->yDir == 1, "vSrcCopyS32D24 - direction not up to down");

// These are our holding variables

    ULONG ulDst;
    PULONG pulSrcTemp;
    PBYTE pjDstTemp;
    ULONG  cxTemp;
    PULONG pulSrc  = (PULONG) (psb->pjSrc + (4 * psb->xSrcStart));
    PBYTE pjDst  = psb->pjDst + (psb->xDstStart * 3);
    ULONG cx     = psb->cx;
    ULONG cy     = psb->cy;
    XLATE *pxlo = psb->pxlo;

    ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");

    while(1)
    {

        pulSrcTemp  = pulSrc;
        pjDstTemp  = pjDst;
        cxTemp     = cx;

        if ((pxlo == NULL) || (pxlo->flXlate & XO_TRIVIAL))
        {
            while(cxTemp--)
            {
                ulDst = *(pulSrcTemp++);

                *(pjDstTemp++) = (BYTE) ulDst;
                *(pjDstTemp++) = (BYTE) (ulDst >> 8);
                *(pjDstTemp++) = (BYTE) (ulDst >> 16);
            }
        }
        else
        {
            while(cxTemp--)
            {
                ulDst = pxlo->ulTranslate(*(pulSrcTemp++));

                *(pjDstTemp++) = (BYTE) ulDst;
                *(pjDstTemp++) = (BYTE) (ulDst >> 8);
                *(pjDstTemp++) = (BYTE) (ulDst >> 16);
            }
        }

        if (--cy)
        {
            pulSrc = (PULONG) (((PBYTE) pulSrc) + psb->lDeltaSrc);
            pjDst += psb->lDeltaDst;
        }
        else
            break;
    }
}