mirror of https://github.com/lianthony/NT4.0
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
833 lines
21 KiB
833 lines
21 KiB
/******************************Module*Header*******************************\
|
|
* Module Name: srcblt8.cxx
|
|
*
|
|
* This contains the bitmap simulation functions that blt to a 8 bit/pel
|
|
* DIB surface.
|
|
*
|
|
* Created: 07-Feb-1991 19:27:49
|
|
* Author: Patrick Haluptzok patrickh
|
|
*
|
|
* NB: The function <vSrcCopySRLE8D8()> was removed from here on 22 Jan 1992
|
|
* and placed in the module <rle8blt.cxx>. - Andrew Milton (w-andym)
|
|
*
|
|
* Copyright (c) 1990 Microsoft Corporation
|
|
*
|
|
\**************************************************************************/
|
|
|
|
#include "precomp.hxx"
|
|
|
|
/*******************Public*Routine*****************\
|
|
* vSrcCopyS1D8
|
|
*
|
|
* There are three main loops in this function.
|
|
*
|
|
* The first loop deals with the full two dwords part of
|
|
* the Dst while fetching/shifting the matching 8 bits
|
|
* from the Src.
|
|
*
|
|
* The second loop deals with the left most strip
|
|
* of the partial two dwords in Dst.
|
|
*
|
|
* The third loop deals with the right most strip
|
|
* of the partial two dwords in Dst.
|
|
*
|
|
* We use a 16 entry dword table to expand the
|
|
* Src bits. We walk thru Src one byte at a time
|
|
* and expand to Dst two Dwords at a time. Dst Dword
|
|
* is aligned.
|
|
*
|
|
* History:
|
|
* 17-Oct-1994 -by- Lingyun Wang [lingyunw]
|
|
* Wrote it.
|
|
*
|
|
\**************************************************/
|
|
|
|
VOID vSrcCopyS1D8(PBLTINFO psb)
|
|
{
|
|
BYTE jSrc; // holds a source byte
|
|
BYTE jDst; // holds a dest byte
|
|
INT iSrc; // bit position in the first Src byte
|
|
INT iDst; // bit position in the first 8 Dst bytes
|
|
PBYTE pjDst; // pointer to the Src bytes
|
|
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;
|
|
LONG lDeltaDst;
|
|
LONG lDeltaSrc;
|
|
BYTE jB = (BYTE) (psb->pxlo->pulXlate[0]);
|
|
BYTE jF = (BYTE) (psb->pxlo->pulXlate[1]);
|
|
ULONG ulB = (ULONG)(psb->pxlo->pulXlate[0]);
|
|
ULONG ulF = (ULONG)(psb->pxlo->pulXlate[1]);
|
|
ULONG aulTable[16];
|
|
UCHAR aucTable[2];
|
|
INT count;
|
|
INT i;
|
|
BOOL bNextSrc=TRUE;
|
|
|
|
// We assume we are doing left to right top to bottom blting
|
|
ASSERTGDI(psb->xDir == 1, "vSrcCopyS1D8 - direction not left to right");
|
|
ASSERTGDI(psb->yDir == 1, "vSrcCopyS1D8 - direction not up to down");
|
|
|
|
ASSERTGDI(psb->cy != 0, "ERROR: Src Move cy == 0");
|
|
|
|
//DbgPrint ("vsrccopys1d8\n");
|
|
|
|
// Generate aucTable
|
|
aucTable[0] = jB;
|
|
aucTable[1] = jF;
|
|
|
|
// Generate ulTable
|
|
ULONG ulVal = ulB;
|
|
|
|
ulVal = ulVal | (ulVal << 8);
|
|
ulVal = ulVal | (ulVal << 16);
|
|
aulTable[0] = ulVal; // 0 0 0 0
|
|
ulVal <<= 8;
|
|
ulVal |= ulF;
|
|
aulTable[8] = ulVal; // 0 0 0 1
|
|
ulVal <<= 8;
|
|
ulVal |= ulB;
|
|
aulTable[4] = ulVal; // 0 0 1 0
|
|
ulVal <<= 8;
|
|
ulVal |= ulF;
|
|
aulTable[10] = ulVal; // 0 1 0 1
|
|
ulVal <<= 8;
|
|
ulVal |= ulB;
|
|
aulTable[5] = ulVal; // 1 0 1 0
|
|
ulVal <<= 8;
|
|
ulVal |= ulB;
|
|
aulTable[ 2] = ulVal; // 0 1 0 0
|
|
ulVal <<= 8;
|
|
ulVal |= ulF;
|
|
aulTable[ 9] = ulVal; // 1 0 0 1
|
|
ulVal <<= 8;
|
|
ulVal |= ulF;
|
|
aulTable[12] = ulVal; // 0 0 1 1
|
|
ulVal <<= 8;
|
|
ulVal |= ulF;
|
|
aulTable[14] = ulVal; // 0 1 1 1
|
|
ulVal <<= 8;
|
|
ulVal |= ulF;
|
|
aulTable[15] = ulVal; // 1 1 1 1
|
|
ulVal <<= 8;
|
|
ulVal |= ulB;
|
|
aulTable[ 7] = ulVal; // 1 1 1 0
|
|
ulVal <<= 8;
|
|
ulVal |= ulF;
|
|
aulTable[11] = ulVal; // 1 1 0 1
|
|
ulVal <<= 8;
|
|
ulVal |= ulF;
|
|
aulTable[13] = ulVal; // 1 0 1 1
|
|
ulVal <<= 8;
|
|
ulVal |= ulB;
|
|
aulTable[06] = ulVal; // 0 1 1 0
|
|
ulVal <<= 8;
|
|
ulVal |= ulB;
|
|
aulTable[ 3] = ulVal; // 1 1 0 0
|
|
ulVal <<= 8;
|
|
ulVal |= ulB;
|
|
aulTable[ 1] = ulVal; // 1 0 0 0
|
|
|
|
//Get Src and Dst start positions
|
|
iSrc = psb->xSrcStart & 0x0007;
|
|
iDst = psb->xDstStart & 0x0007;
|
|
|
|
// Checking alignment
|
|
// If Src starting point is ahead of Dst
|
|
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;
|
|
|
|
xDstEnd = psb->xDstStart + cx;
|
|
|
|
lDeltaDst = psb->lDeltaDst;
|
|
lDeltaSrc = psb->lDeltaSrc;
|
|
|
|
// check if there is a next 8 bytes
|
|
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 8 bytes (2 dwords) one at a time
|
|
|
|
if (bNextByte)
|
|
{
|
|
long iStrideSrc;
|
|
long iStrideDst;
|
|
PBYTE pjSrcEnd; //pointer to the Last full Src byte
|
|
|
|
// Get first Dst full 8 bytes (2 dwords expanding from
|
|
// 1 Src byte)
|
|
pjDst = psb->pjDst + ((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
|
|
cFullBytes = (xDstEnd>>3)-((psb->xDstStart+7)>>3);
|
|
|
|
//the increment to the full byte on the next scan line
|
|
iStrideDst = lDeltaDst - cFullBytes*8;
|
|
iStrideSrc = lDeltaSrc - cFullBytes;
|
|
|
|
// deal with our special case
|
|
cy = psb->cy;
|
|
|
|
if (!jAlignL)
|
|
{
|
|
while (cy--)
|
|
{
|
|
pjSrcEnd = pjSrc+cFullBytes;
|
|
|
|
while (pjSrc != pjSrcEnd)
|
|
{
|
|
jSrc = *pjSrc++;
|
|
|
|
*(PULONG) (pjDst + 0) = aulTable[jSrc >> 4];
|
|
*(PULONG) (pjDst + 4) = aulTable[jSrc & 0X0F];
|
|
|
|
pjDst +=8;
|
|
}
|
|
|
|
pjDst += iStrideDst;
|
|
pjSrc += iStrideSrc;
|
|
}
|
|
|
|
} //end of if (!jAlignL)
|
|
|
|
|
|
else // if not aligned
|
|
{
|
|
BYTE jRem; //remainder
|
|
|
|
while (cy--)
|
|
{
|
|
jRem = *pjSrc << jAlignL;
|
|
|
|
pjSrcEnd = pjSrc+cFullBytes;
|
|
|
|
while (pjSrc != pjSrcEnd)
|
|
{
|
|
jSrc = ((*(++pjSrc))>>jAlignR) | jRem;
|
|
|
|
*(PULONG) (pjDst + 0) = aulTable[jSrc >> 4];
|
|
*(PULONG) (pjDst + 4) = aulTable[jSrc & 0X0F];
|
|
|
|
pjDst +=8;
|
|
|
|
//next remainder
|
|
jRem = *pjSrc << jAlignL;
|
|
}
|
|
|
|
pjDst += iStrideDst;
|
|
pjSrc += iStrideSrc;
|
|
}
|
|
} //else
|
|
} //if
|
|
// End of our dealing with the full bytes
|
|
|
|
//Deal with 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 + 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 + count;
|
|
|
|
while (pjDstTemp != pjDstEnd)
|
|
{
|
|
* (pjDstTemp++) = aucTable[(jSrc&0x80)>>7];
|
|
|
|
jSrc <<= 1;
|
|
}
|
|
|
|
pjDst += lDeltaDst;
|
|
pjSrc += lDeltaSrc;
|
|
|
|
}
|
|
}
|
|
else // if (!bNextSrc)
|
|
{
|
|
while (cy--)
|
|
{
|
|
jSrc = *pjSrc << jAlignL;
|
|
|
|
jSrc <<= iDst;
|
|
|
|
pjDstTemp = pjDst;
|
|
|
|
pjDstEnd = pjDst + count;
|
|
|
|
while (pjDstTemp != pjDstEnd)
|
|
{
|
|
* (pjDstTemp++) = aucTable[(jSrc&0x80)>>7];
|
|
|
|
jSrc <<= 1;
|
|
}
|
|
|
|
pjDst += lDeltaDst;
|
|
pjSrc += lDeltaSrc;
|
|
|
|
}
|
|
} //else
|
|
} // if
|
|
else //if (iSrc <= iDst)
|
|
{
|
|
while (cy--)
|
|
{
|
|
jSrc = *pjSrc << iSrc;
|
|
|
|
pjDstTemp = pjDst;
|
|
|
|
pjDstEnd = pjDst + count;
|
|
|
|
while (pjDstTemp != pjDstEnd)
|
|
{
|
|
*(pjDstTemp++) = aucTable[(jSrc&0x80)>>7];
|
|
|
|
jSrc <<= 1;
|
|
}
|
|
|
|
pjDst += lDeltaDst;
|
|
pjSrc += lDeltaSrc;
|
|
}
|
|
|
|
}
|
|
|
|
} //if
|
|
|
|
// Deal with the ending pixels
|
|
if ((xDstEnd & 0x0007)
|
|
&& bNextByte)
|
|
{
|
|
PBYTE pjDstTemp;
|
|
PBYTE pjDstEnd;
|
|
|
|
// Get the last partial bytes on the
|
|
// scan line
|
|
pjDst = psb->pjDst+(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 + count;
|
|
|
|
while (pjDstTemp != pjDstEnd)
|
|
{
|
|
* (pjDstTemp++) = aucTable[(jSrc&0x80)>>7];
|
|
|
|
jSrc <<= 1;
|
|
}
|
|
|
|
pjDst += lDeltaDst;
|
|
pjSrc += lDeltaSrc;
|
|
}
|
|
}
|
|
else //if (iSrc < iDst)
|
|
{
|
|
while (cy--)
|
|
{
|
|
jSrc = *(pjSrc-1) << jAlignL;
|
|
|
|
ASSERTGDI(pjSrc <= (psb->pjSrc+lDeltaSrc*(psb->cy-cy-1)+((psb->xSrcEnd-1)>>3)),
|
|
"vSrcCopyS1D8 - pjSrc passed the last byte");
|
|
|
|
jSrc |= *pjSrc >> jAlignR;
|
|
|
|
pjDstTemp = pjDst;
|
|
|
|
pjDstEnd = pjDst + count;
|
|
|
|
while (pjDstTemp != pjDstEnd)
|
|
{
|
|
*(pjDstTemp++) = aucTable[(jSrc&0x80)>>7];
|
|
|
|
jSrc <<= 1;
|
|
}
|
|
|
|
pjDst += lDeltaDst;
|
|
pjSrc += lDeltaSrc;
|
|
}
|
|
}
|
|
} //if
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/******************************Public*Routine******************************\
|
|
* vSrcCopyS4D8
|
|
*
|
|
*
|
|
* History:
|
|
* 06-Feb-1991 -by- Patrick Haluptzok patrickh
|
|
* Wrote it.
|
|
\**************************************************************************/
|
|
|
|
VOID vSrcCopyS4D8(PBLTINFO psb)
|
|
{
|
|
// We assume we are doing left to right top to bottom blting
|
|
|
|
ASSERTGDI(psb->xDir == 1, "vSrcCopyS4D8 - direction not left to right");
|
|
ASSERTGDI(psb->yDir == 1, "vSrcCopyS4D8 - direction not up to down");
|
|
|
|
BYTE jSrc;
|
|
LONG i;
|
|
PBYTE pjDst;
|
|
PBYTE pjSrc;
|
|
PBYTE pjDstHolder = psb->pjDst + psb->xDstStart;
|
|
PBYTE pjSrcHolder = psb->pjSrc + (psb->xSrcStart >> 1);
|
|
ULONG cx = psb->xSrcEnd - psb->xSrcStart;
|
|
ULONG cy = psb->cy;
|
|
PULONG pulTranslate = psb->pxlo->pulXlate;
|
|
|
|
ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");
|
|
|
|
do {
|
|
pjDst = pjDstHolder;
|
|
pjSrc = pjSrcHolder;
|
|
|
|
if ((psb->xSrcStart & 0x1) != 0)
|
|
{
|
|
jSrc = *(pjSrc++);
|
|
}
|
|
|
|
for (i = psb->xSrcStart; i < psb->xSrcEnd; i += 1)
|
|
{
|
|
if ((i & 0x1) != 0)
|
|
{
|
|
*(pjDst++) = (BYTE) pulTranslate[jSrc & 0x0F];
|
|
}
|
|
else
|
|
{
|
|
jSrc = *(pjSrc++);
|
|
*(pjDst++) = (BYTE) pulTranslate[((ULONG) (jSrc & 0xF0)) >> 4];
|
|
}
|
|
}
|
|
|
|
pjSrcHolder += psb->lDeltaSrc;
|
|
pjDstHolder += psb->lDeltaDst;
|
|
cy -= 1;
|
|
|
|
} while(cy > 0);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* vSrcCopyS8D8
|
|
*
|
|
*
|
|
* History:
|
|
* 06-Feb-1991 -by- Patrick Haluptzok patrickh
|
|
* Wrote it.
|
|
\**************************************************************************/
|
|
|
|
VOID vSrcCopyS8D8(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, "vSrcCopyS8D8 - direction not left to right");
|
|
ASSERTGDI(psb->yDir == 1, "vSrcCopyS8D8 - direction not up to down");
|
|
|
|
// These are our holding variables
|
|
|
|
#if MESSAGE_BLT
|
|
DbgPrint("Now entering vSrcCopyS8D8\n");
|
|
#endif
|
|
|
|
PBYTE pjSrcTemp;
|
|
PBYTE pjDstTemp;
|
|
ULONG cxTemp;
|
|
PBYTE pjSrc = psb->pjSrc + psb->xSrcStart;
|
|
PBYTE pjDst = psb->pjDst + psb->xDstStart;
|
|
ULONG cx = psb->cx;
|
|
ULONG cy = psb->cy;
|
|
PULONG pulTranslate = psb->pxlo->pulXlate;
|
|
|
|
ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");
|
|
|
|
while(1)
|
|
{
|
|
pjSrcTemp = pjSrc;
|
|
pjDstTemp = pjDst;
|
|
cxTemp = cx;
|
|
|
|
while(cxTemp--)
|
|
{
|
|
*(pjDstTemp++) = (BYTE) pulTranslate[*(pjSrcTemp++)];
|
|
}
|
|
|
|
if (--cy)
|
|
{
|
|
pjSrc += psb->lDeltaSrc;
|
|
pjDst += psb->lDeltaDst;
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* vSrcCopyS8D8IdentityLtoR
|
|
*
|
|
* 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:
|
|
* 06-Feb-1991 -by- Patrick Haluptzok patrickh
|
|
* Wrote it.
|
|
\**************************************************************************/
|
|
|
|
VOID vSrcCopyS8D8IdentityLtoR(PBLTINFO psb)
|
|
{
|
|
#if MESSAGE_BLT
|
|
DbgPrint("Now entering s8d8 identity L to R\n");
|
|
#endif
|
|
|
|
ASSERTGDI(psb->xDir == 1, "S8D8identLtoR has wrong value xDir");
|
|
|
|
// These are our holding variables
|
|
|
|
PBYTE pjSrc = psb->pjSrc + psb->xSrcStart;
|
|
PBYTE pjDst = psb->pjDst + psb->xDstStart;
|
|
ULONG cx = psb->cx;
|
|
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
|
|
|
|
do {
|
|
RtlMoveMemory((PVOID)pjDst, (PVOID)pjSrc, cx);
|
|
pjSrc += psb->lDeltaSrc;
|
|
pjDst += psb->lDeltaDst;
|
|
cy -= 1;
|
|
} while(cy > 0);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* vSrcCopyS8D8IdentityRtoL
|
|
*
|
|
* 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:
|
|
* 06-Feb-1991 -by- Patrick Haluptzok patrickh
|
|
* Wrote it.
|
|
\**************************************************************************/
|
|
|
|
VOID vSrcCopyS8D8IdentityRtoL(PBLTINFO psb)
|
|
{
|
|
#if MESSAGE_BLT
|
|
DbgPrint("Now entering s8d8 identity R to L\n");
|
|
#endif
|
|
|
|
ASSERTGDI(psb->xDir == -1, "S8D8identR to L has wrong value xDir");
|
|
|
|
// These are our holding variables
|
|
|
|
PBYTE pjSrc = psb->pjSrc + psb->xSrcStart;
|
|
PBYTE pjDst = psb->pjDst + psb->xDstStart;
|
|
ULONG cx = psb->cx;
|
|
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
|
|
|
|
pjSrc = pjSrc - cx + 1;
|
|
pjDst = pjDst - cx + 1;
|
|
do {
|
|
RtlMoveMemory((PVOID)pjDst, (PVOID)pjSrc, cx);
|
|
pjSrc += psb->lDeltaSrc;
|
|
pjDst += psb->lDeltaDst;
|
|
cy -= 1;
|
|
} while(cy > 0);
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* vSrcCopyS16D8
|
|
*
|
|
* History:
|
|
* Sat 21-Mar-1992 -by- Patrick Haluptzok [patrickh]
|
|
* Optimize translation to cache last pel.
|
|
*
|
|
* 07-Feb-1991 -by- Patrick Haluptzok patrickh
|
|
* Wrote it.
|
|
\**************************************************************************/
|
|
|
|
VOID vSrcCopyS16D8(PBLTINFO psb)
|
|
{
|
|
// We assume we are doing left to right top to bottom blting
|
|
|
|
ASSERTGDI(psb->xDir == 1, "vSrcCopyS16D8 - direction not left to right");
|
|
ASSERTGDI(psb->yDir == 1, "vSrcCopyS16D8 - direction not up to down");
|
|
|
|
// These are our holding variables
|
|
|
|
PUSHORT pusSrcTemp;
|
|
PBYTE pjDstTemp;
|
|
ULONG cxTemp;
|
|
PUSHORT pusSrc = (PUSHORT) (psb->pjSrc + (2 * psb->xSrcStart));
|
|
PBYTE pjDst = psb->pjDst + psb->xDstStart;
|
|
ULONG cx = psb->cx;
|
|
ULONG cy = psb->cy;
|
|
ULONG ulPelLast; // This is the last pel in the src.
|
|
BYTE jPelLast; // This is what the last pel mapped to.
|
|
XLATE *pxlo = psb->pxlo;
|
|
|
|
ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");
|
|
|
|
ulPelLast = (ULONG) *pusSrc;
|
|
jPelLast = (BYTE) (pxlo->ulTranslate(ulPelLast));
|
|
|
|
while(1)
|
|
{
|
|
pusSrcTemp = pusSrc;
|
|
pjDstTemp = pjDst;
|
|
cxTemp = cx;
|
|
|
|
while(cxTemp--)
|
|
{
|
|
if (((ULONG) *pusSrcTemp) == ulPelLast)
|
|
{
|
|
*pjDstTemp = jPelLast;
|
|
}
|
|
else
|
|
{
|
|
ulPelLast = (ULONG) *pusSrcTemp;
|
|
*pjDstTemp = jPelLast = (BYTE) (pxlo->ulTranslate(ulPelLast));
|
|
}
|
|
|
|
pjDstTemp++;
|
|
pusSrcTemp++;
|
|
}
|
|
|
|
if (--cy)
|
|
{
|
|
pusSrc = (PUSHORT) (((PBYTE) pusSrc) + psb->lDeltaSrc);
|
|
pjDst += psb->lDeltaDst;
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* vSrcCopyS24D8
|
|
*
|
|
*
|
|
* History:
|
|
* 06-Feb-1991 -by- Patrick Haluptzok patrickh
|
|
* Wrote it.
|
|
\**************************************************************************/
|
|
|
|
#define CACHE_SIZE 128
|
|
|
|
VOID vSrcCopyS24D8(PBLTINFO psb)
|
|
{
|
|
//
|
|
// We assume we are doing left to right top to bottom blting
|
|
//
|
|
|
|
ASSERTGDI(psb->xDir == 1, "vSrcCopyS24D8 - direction not left to right");
|
|
ASSERTGDI(psb->yDir == 1, "vSrcCopyS24D8 - direction not up to down");
|
|
|
|
ULONG cx = psb->cx;
|
|
ULONG cy = psb->cy;
|
|
PBYTE pjSrc = psb->pjSrc + (3 * psb->xSrcStart);
|
|
PBYTE pjDst = psb->pjDst + psb->xDstStart;
|
|
PBYTE pjDstEndY = pjDst + cy * psb->lDeltaDst;
|
|
PBYTE pjDstEnd;
|
|
XLATE *pxlo = psb->pxlo;
|
|
LONG lDstStride = psb->lDeltaDst - cx;
|
|
LONG lSrcStride = psb->lDeltaSrc - 3 * cx;
|
|
|
|
ULONG ColorCacheTag[CACHE_SIZE];
|
|
BYTE ColorCacheData[CACHE_SIZE];
|
|
|
|
//
|
|
// clear cache, high byte of 0xFF will gaurentee no match
|
|
// with any src color
|
|
//
|
|
|
|
memset(ColorCacheTag,0xFF,CACHE_SIZE*4);
|
|
|
|
ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");
|
|
|
|
do
|
|
{
|
|
pjDstEnd = pjDst + cx;
|
|
|
|
while(pjDst != pjDstEnd)
|
|
{
|
|
|
|
BYTE r = *(pjSrc );
|
|
BYTE g = *(pjSrc+1);
|
|
BYTE b = *(pjSrc+2);
|
|
|
|
ULONG SrcColor = (b << 16) | (g << 8) | r;
|
|
|
|
BYTE Tag = ((r + g + b) >> 1) & 0x7F;
|
|
|
|
ULONG ColorTag = ColorCacheTag[Tag];
|
|
BYTE PalIndex = ColorCacheData[Tag];
|
|
|
|
if (ColorTag != SrcColor) {
|
|
PalIndex = (BYTE) pxlo->ulTranslate(SrcColor);
|
|
ColorCacheData[Tag] = PalIndex;
|
|
ColorCacheTag[Tag] = SrcColor;
|
|
|
|
}
|
|
|
|
*pjDst = PalIndex;
|
|
|
|
pjDst ++;
|
|
pjSrc += 3;
|
|
}
|
|
|
|
pjSrc += lSrcStride;
|
|
pjDst += lDstStride;
|
|
|
|
} while (pjDst != pjDstEndY);
|
|
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* vSrcCopyS32D8
|
|
*
|
|
* Copies 32/pel to 8/pel. The only interesting thing I did was check
|
|
* if the next pel is the same as the last so you don't have to check
|
|
* for the nearest color again (expensive operation).
|
|
*
|
|
* History:
|
|
* 07-Feb-1991 -by- Patrick Haluptzok patrickh
|
|
* Wrote it.
|
|
\**************************************************************************/
|
|
|
|
VOID vSrcCopyS32D8(PBLTINFO psb)
|
|
{
|
|
// We assume we are doing left to right top to bottom blting
|
|
|
|
ASSERTGDI(psb->xDir == 1, "vSrcCopyS32D8 - direction not left to right");
|
|
ASSERTGDI(psb->yDir == 1, "vSrcCopyS32D8 - direction not up to down");
|
|
|
|
// These are our holding variables
|
|
|
|
PULONG pulSrcTemp;
|
|
PBYTE pjDstTemp;
|
|
ULONG cxTemp;
|
|
PULONG pulSrc = (PULONG) (psb->pjSrc + (4 * psb->xSrcStart));
|
|
PBYTE pjDst = psb->pjDst + psb->xDstStart;
|
|
ULONG cx = psb->cx;
|
|
ULONG cy = psb->cy;
|
|
ULONG ulPelLast; // This the last pel in the src
|
|
XLATE *pxlo = psb->pxlo;
|
|
BYTE jPelLast; // This is what the last pel mapped to in the dest
|
|
|
|
ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");
|
|
|
|
jPelLast = (BYTE) (pxlo->ulTranslate(ulPelLast = *pulSrc));
|
|
|
|
while(1)
|
|
{
|
|
pulSrcTemp = pulSrc;
|
|
pjDstTemp = pjDst;
|
|
cxTemp = cx;
|
|
|
|
while(cxTemp--)
|
|
{
|
|
if (*pulSrcTemp == ulPelLast)
|
|
{
|
|
*pjDstTemp = jPelLast;
|
|
}
|
|
else
|
|
{
|
|
ulPelLast = *pulSrcTemp;
|
|
*pjDstTemp = jPelLast = (BYTE) (pxlo->ulTranslate(ulPelLast));
|
|
}
|
|
pjDstTemp++;
|
|
pulSrcTemp++;
|
|
}
|
|
|
|
if (--cy)
|
|
{
|
|
pulSrc = (PULONG) (((PBYTE) pulSrc) + psb->lDeltaSrc);
|
|
pjDst += psb->lDeltaDst;
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
}
|