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682 lines
18 KiB
682 lines
18 KiB
/******************************Module*Header*******************************\
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* Module Name: srcblt32.cxx
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*
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* This contains the bitmap simulation functions that blt to a 32 bit/pel
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* DIB surface.
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*
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* Created: 07-Feb-1991 19:27:49
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* Author: Patrick Haluptzok patrickh
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*
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* Copyright (c) 1990 Microsoft Corporation
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*
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\**************************************************************************/
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#include "precomp.hxx"
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/*******************Public*Routine*****************\
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* vSrcCopyS1D32
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*
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* There are three main loops in this function.
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*
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* The first loop deals with the full byte part mapping
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* the Dst while fetching/shifting the matching 8 bits
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* from the Src.
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*
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* The second loop deals with the left starting
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* pixels.
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*
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* The third loop deals with the ending pixels.
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*
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* For the full bytes, we walk thru Src one byte at a time
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* and expand to Dst.
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*
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* We expand the starting/ending pixels one bit
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* at a time.
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*
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* History:
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* 17-Oct-1994 -by- Lingyun Wang [lingyunw]
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* Wrote it.
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*
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\**************************************************/
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VOID vSrcCopyS1D32(PBLTINFO psb)
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{
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// We assume we are doing left to right top to bottom blting
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ASSERTGDI(psb->xDir == 1, "vSrcCopyS1D32 - direction not left to right");
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ASSERTGDI(psb->yDir == 1, "vSrcCopyS1D32 - direction not up to down");
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BYTE jSrc; // holds a source byte
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INT iDst; // Position in the first 8 Dst dwords
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INT iSrc; // bit position in the first Src byte
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PULONG pulDst;
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PBYTE pjSrc; // pointer to the Dst bytes
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LONG xSrcEnd = psb->xSrcEnd;
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LONG cy; // number of rows
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LONG cx; // number of pixels
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BYTE jAlignL; // alignment bits to the left
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BYTE jAlignR; // alignment bits to the right
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LONG cFullBytes; //number of full 8 bytes dealed with
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BOOL bNextByte;
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LONG xDstEnd = psb->xDstStart+psb->cx;
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LONG lDeltaDst;
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LONG lDeltaSrc;
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ULONG ulB = (ULONG)(psb->pxlo->pulXlate[0]);
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ULONG ulF = (ULONG)(psb->pxlo->pulXlate[1]);
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ULONG aulTable[2];
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INT count;
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BOOL bNextSrc=TRUE;
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ASSERTGDI(psb->cy != 0, "ERROR: Src Move cy == 0");
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//DbgPrint ("vsrccopys1d32\n");
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// Generate aulTable. 2 entries.
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aulTable[0] = ulB;
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aulTable[1] = ulF;
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//Get Src and Dst start positions
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iSrc = psb->xSrcStart & 0x0007;
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iDst = psb->xDstStart & 0x0007;
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if (iSrc < iDst)
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jAlignL = 8 - (iDst - iSrc);
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// If Dst starting point is ahead of Src
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else
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jAlignL = iSrc - iDst;
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//jAlignR = (8 - jAlignL) & 0x07;
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jAlignR = 8 - jAlignL;
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cx=psb->cx;
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lDeltaDst = psb->lDeltaDst/4;
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lDeltaSrc = psb->lDeltaSrc;
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// if there is a next 8 dwords
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bNextByte = !((xDstEnd>>3) ==
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(psb->xDstStart>>3));
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// if Src and Dst are aligned, use a separete loop
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// to obtain better performance;
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// If not, we shift the Src bytes to match with
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// the Dst 8 bytes (2 dwords) one at a time
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if (bNextByte)
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{
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long iStrideSrc;
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long iStrideDst;
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PBYTE pjSrcEnd;
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// Get first Dst full 8 dwords
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pulDst = (PULONG) (psb->pjDst + 4*((psb->xDstStart+7)&~0x07));
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// Get the Src byte that matches the first Dst
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// full 8 bytes
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pjSrc = psb->pjSrc + (psb->xSrcStart+((8-iDst)&0x07) >> 3);
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//Get the number of full 8 dwords
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cFullBytes = (xDstEnd>>3)-((psb->xDstStart+7)>>3);
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//the increment to the full byte on the next scan line
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iStrideDst = lDeltaDst - cFullBytes*8;
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iStrideSrc = lDeltaSrc - cFullBytes;
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// deal with our special case
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cy = psb->cy;
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if (!jAlignL)
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{
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while (cy--)
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{
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pjSrcEnd = pjSrc + cFullBytes;
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while (pjSrc != pjSrcEnd)
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{
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jSrc = *pjSrc++;
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*(pulDst + 0) = aulTable[(jSrc & 0x80) >> 7];
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*(pulDst + 1) = aulTable[(jSrc & 0x40) >> 6];
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*(pulDst + 2) = aulTable[(jSrc & 0x20) >> 5];
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*(pulDst + 3) = aulTable[(jSrc & 0x10) >> 4];
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*(pulDst + 4) = aulTable[(jSrc & 0x08) >> 3];
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*(pulDst + 5) = aulTable[(jSrc & 0x04) >> 2];
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*(pulDst + 6) = aulTable[(jSrc & 0x02) >> 1];
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*(pulDst + 7) = aulTable[(jSrc & 0x01) >> 0];
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pulDst +=8;
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}
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pulDst += iStrideDst;
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pjSrc += iStrideSrc;
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}
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} //end of if (!jAlignL)
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// Here comes our general case for the main full
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// bytes part
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else // if not aligned
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{
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BYTE jRem; //remainder
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while (cy--)
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{
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jRem = *pjSrc << jAlignL;
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pjSrcEnd = pjSrc + cFullBytes;
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while (pjSrc != pjSrcEnd)
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{
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jSrc = ((*(++pjSrc))>>jAlignR) | jRem;
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*(pulDst + 0) = aulTable[(jSrc & 0x80) >> 7];
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*(pulDst + 1) = aulTable[(jSrc & 0x40) >> 6];
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*(pulDst + 2) = aulTable[(jSrc & 0x20) >> 5];
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*(pulDst + 3) = aulTable[(jSrc & 0x10) >> 4];
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*(pulDst + 4) = aulTable[(jSrc & 0x08) >> 3];
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*(pulDst + 5) = aulTable[(jSrc & 0x04) >> 2];
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*(pulDst + 6) = aulTable[(jSrc & 0x02) >> 1];
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*(pulDst + 7) = aulTable[(jSrc & 0x01) >> 0];
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pulDst +=8;
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//next remainder
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jRem = *pjSrc << jAlignL;
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}
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// go to the beginging full byte of
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// next scan line
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pulDst += iStrideDst;
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pjSrc += iStrideSrc;
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}
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} //else
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} //if
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// End of our dealing with the full bytes
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// Begin dealing with the left strip of the
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// starting pixels
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if (!bNextByte)
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{
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count = cx;
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bNextSrc = ((iSrc+cx)>8);
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}
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else
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count = 8-iDst;
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if (iDst | !bNextByte)
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{
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PULONG pulDstTemp;
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PULONG pulDstEnd;
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pulDst = (PULONG) (psb->pjDst + (4*psb->xDstStart));
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pjSrc = psb->pjSrc + (psb->xSrcStart>>3);
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cy = psb->cy;
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if (iSrc >= iDst)
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{
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if (bNextSrc)
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{
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while (cy--)
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{
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jSrc = *pjSrc << jAlignL;
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jSrc |= *(pjSrc+1) >> jAlignR;
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jSrc <<= iDst;
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pulDstTemp = pulDst;
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pulDstEnd = pulDst + count;
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while (pulDstTemp != pulDstEnd)
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{
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*(pulDstTemp++) = aulTable[(jSrc&0x80)>>7];
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jSrc <<= 1;
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}
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pulDst += lDeltaDst;
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pjSrc += lDeltaSrc;
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}
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}
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else
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{
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while (cy--)
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{
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jSrc = *pjSrc << jAlignL;
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jSrc <<= iDst;
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pulDstTemp = pulDst;
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pulDstEnd = pulDst + count;
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while (pulDstTemp != pulDstEnd)
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{
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*(pulDstTemp++) = aulTable[(jSrc&0x80)>>7];
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jSrc <<= 1;
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}
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pulDst += lDeltaDst;
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pjSrc += lDeltaSrc;
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}
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}
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}
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else if (iSrc < iDst)
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{
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while (cy--)
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{
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jSrc = *pjSrc << iSrc;
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pulDstTemp = pulDst;
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pulDstEnd = pulDst + count;
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while (pulDstTemp != pulDstEnd)
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{
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* (pulDstTemp++) = aulTable[(jSrc&0x80)>>7];
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jSrc <<= 1;
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}
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pulDst += lDeltaDst;
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pjSrc += lDeltaSrc;
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}
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}
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} //if
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// Begin dealing with the right edge
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// of partial 8 bytes
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// first check if there is any partial
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// byte left
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// and has next 8 bytes
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if ((xDstEnd & 0x0007)
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&& bNextByte)
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{
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PULONG pulDstTemp;
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PULONG pulDstEnd;
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// Get the last partial bytes on the
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// scan line
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pulDst = (PULONG) (psb->pjDst+ 4*(xDstEnd&~0x07));
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// Get the Src byte that matches the
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// right partial Dst 8 bytes
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pjSrc = psb->pjSrc + ((psb->xSrcEnd-1) >>3);
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// Get the ending position in the last
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// Src and Dst bytes
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iSrc = (psb->xSrcEnd-1) & 0x0007;
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iDst = (xDstEnd-1) & 0x0007;
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count = iDst+1;
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cy = psb->cy;
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if (iSrc >= iDst)
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{
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while (cy--)
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{
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jSrc = *pjSrc << jAlignL;
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pulDstTemp = pulDst;
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pulDstEnd = pulDst + count;
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while (pulDstTemp != pulDstEnd)
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{
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*(pulDstTemp++) = aulTable[(jSrc&0x80)>>7];
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jSrc <<= 1;
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}
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pulDst += lDeltaDst;
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pjSrc += lDeltaSrc;
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}
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}
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else //if (iSrc < iDst)
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{
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while (cy--)
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{
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jSrc = *(pjSrc-1) << jAlignL;
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jSrc |= *pjSrc >> jAlignR;
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pulDstTemp = pulDst;
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pulDstEnd = pulDst + count;
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while (pulDstTemp != pulDstEnd)
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{
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* (pulDstTemp++) = aulTable[(jSrc&0x80)>>7];
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jSrc <<= 1;
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}
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pulDst += lDeltaDst;
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pjSrc += lDeltaSrc;
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}
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}
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} //if
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}
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/******************************Public*Routine******************************\
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* vSrcCopyS4D32
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*
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*
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* History:
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* 06-Feb-1991 -by- Patrick Haluptzok patrickh
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* Wrote it.
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\**************************************************************************/
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VOID vSrcCopyS4D32(PBLTINFO psb)
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{
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// We assume we are doing left to right top to bottom blting
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ASSERTGDI(psb->xDir == 1, "vSrcCopyS4D32 - direction not left to right");
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ASSERTGDI(psb->yDir == 1, "vSrcCopyS4D32 - direction not up to down");
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BYTE jSrc;
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LONG i;
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PULONG pulDst;
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PBYTE pjSrc;
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PULONG pulDstHolder = (PULONG) (psb->pjDst + (4 * psb->xDstStart));
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PBYTE pjSrcHolder = psb->pjSrc + (psb->xSrcStart >> 1);
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ULONG cy = psb->cy;
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PULONG pulXlate = psb->pxlo->pulXlate;
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ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");
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while(1)
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{
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pulDst = pulDstHolder;
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pjSrc = pjSrcHolder;
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i = psb->xSrcStart;
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if (i & 0x00000001)
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jSrc = *(pjSrc++);
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while(i != psb->xSrcEnd)
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{
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if (i & 0x00000001)
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*(pulDst++) = pulXlate[jSrc & 0x0F];
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else
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{
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// We need a new byte
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jSrc = *(pjSrc++);
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*(pulDst++) = pulXlate[(((ULONG) (jSrc & 0xF0)) >> 4)];
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}
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++i;
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}
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if (--cy)
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{
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pjSrcHolder += psb->lDeltaSrc;
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pulDstHolder = (PULONG) (((PBYTE) pulDstHolder) + psb->lDeltaDst);
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}
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else
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break;
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}
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}
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/******************************Public*Routine******************************\
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* vSrcCopyS8D32
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*
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*
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* History:
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* 06-Feb-1991 -by- Patrick Haluptzok patrickh
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* Wrote it.
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\**************************************************************************/
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VOID vSrcCopyS8D32(PBLTINFO psb)
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{
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// We assume we are doing left to right top to bottom blting
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ASSERTGDI(psb->xDir == 1, "vSrcCopyS8D32 - direction not left to right");
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ASSERTGDI(psb->yDir == 1, "vSrcCopyS8D32 - direction not up to down");
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// These are our holding variables
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PBYTE pjSrcTemp;
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PULONG pulDstTemp;
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ULONG cxTemp;
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PBYTE pjSrc = psb->pjSrc + psb->xSrcStart;
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PULONG pulDst = (PULONG) (psb->pjDst + (4 * psb->xDstStart));
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ULONG cx = psb->cx;
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ULONG cy = psb->cy;
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PULONG pulXlate = psb->pxlo->pulXlate;
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ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");
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while(1)
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{
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pjSrcTemp = pjSrc;
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pulDstTemp = pulDst;
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cxTemp = cx;
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while(cxTemp--)
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{
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*(pulDstTemp++) = pulXlate[((ULONG) *(pjSrcTemp++))];
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}
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if (--cy)
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{
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pjSrc += psb->lDeltaSrc;
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pulDst = (PULONG) (((PBYTE) pulDst) + psb->lDeltaDst);
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}
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else
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break;
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}
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}
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/******************************Public*Routine******************************\
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* vSrcCopyS16D32
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*
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*
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* History:
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* 07-Feb-1991 -by- Patrick Haluptzok patrickh
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* Wrote it.
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\**************************************************************************/
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VOID vSrcCopyS16D32(PBLTINFO psb)
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{
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// We assume we are doing left to right top to bottom blting
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ASSERTGDI(psb->xDir == 1, "vSrcCopyS16D32 - direction not left to right");
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ASSERTGDI(psb->yDir == 1, "vSrcCopyS16D32 - direction not up to down");
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// These are our holding variables
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PUSHORT pusSrcTemp;
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PULONG pulDstTemp;
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ULONG cxTemp;
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PUSHORT pusSrc = (PUSHORT) (psb->pjSrc + (2 * psb->xSrcStart));
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PULONG pulDst = (PULONG) (psb->pjDst + (4 * psb->xDstStart));
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ULONG cx = psb->cx;
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ULONG cy = psb->cy;
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XLATE *pxlo = psb->pxlo;
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ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");
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while(1)
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{
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pusSrcTemp = pusSrc;
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pulDstTemp = pulDst;
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cxTemp = cx;
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while(cxTemp--)
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{
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*(pulDstTemp++) = pxlo->ulTranslate((ULONG) *(pusSrcTemp++));
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}
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if (--cy)
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{
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pusSrc = (PUSHORT) (((PBYTE) pusSrc) + psb->lDeltaSrc);
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pulDst = (PULONG) (((PBYTE) pulDst) + psb->lDeltaDst);
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}
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else
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break;
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}
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}
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/******************************Public*Routine******************************\
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* vSrcCopyS24D32
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*
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*
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* History:
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* 06-Feb-1991 -by- Patrick Haluptzok patrickh
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* Wrote it.
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\**************************************************************************/
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VOID vSrcCopyS24D32(PBLTINFO psb)
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{
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// We assume we are doing left to right top to bottom blting
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ASSERTGDI(psb->xDir == 1, "vSrcCopyS24D32 - direction not left to right");
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ASSERTGDI(psb->yDir == 1, "vSrcCopyS24D32 - direction not up to down");
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// These are our holding variables
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ULONG ulDink; // variable to dink around with the bytes in
|
|
PBYTE pjSrcTemp;
|
|
PULONG pulDstTemp;
|
|
ULONG cxTemp;
|
|
PBYTE pjSrc = psb->pjSrc + (3 * psb->xSrcStart);
|
|
PULONG pulDst = (PULONG) (psb->pjDst + (4 * psb->xDstStart));
|
|
ULONG cx = psb->cx;
|
|
ULONG cy = psb->cy;
|
|
XLATE *pxlo = psb->pxlo;
|
|
|
|
ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");
|
|
|
|
while(1)
|
|
{
|
|
|
|
pjSrcTemp = pjSrc;
|
|
pulDstTemp = pulDst;
|
|
cxTemp = cx;
|
|
|
|
while(cxTemp--)
|
|
{
|
|
ulDink = *(pjSrcTemp + 2);
|
|
ulDink = ulDink << 8;
|
|
ulDink |= (ULONG) *(pjSrcTemp + 1);
|
|
ulDink = ulDink << 8;
|
|
ulDink |= (ULONG) *pjSrcTemp;
|
|
|
|
*pulDstTemp = pxlo->ulTranslate(ulDink);
|
|
pulDstTemp++;
|
|
pjSrcTemp += 3;
|
|
}
|
|
|
|
if (--cy)
|
|
{
|
|
pjSrc += psb->lDeltaSrc;
|
|
pulDst = (PULONG) (((PBYTE) pulDst) + psb->lDeltaDst);
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* vSrcCopyS32D32
|
|
*
|
|
*
|
|
* History:
|
|
* 07-Feb-1991 -by- Patrick Haluptzok patrickh
|
|
* Wrote it.
|
|
\**************************************************************************/
|
|
VOID vSrcCopyS32D32(PBLTINFO psb)
|
|
{
|
|
// We assume we are doing left to right top to bottom blting.
|
|
// If it was on the same surface it would be the identity case.
|
|
|
|
ASSERTGDI(psb->xDir == 1, "vSrcCopyS32D32 - direction not left to right");
|
|
ASSERTGDI(psb->yDir == 1, "vSrcCopyS32D32 - direction not up to down");
|
|
|
|
// These are our holding variables
|
|
|
|
PULONG pulSrcTemp;
|
|
PULONG pulDstTemp;
|
|
ULONG cxTemp;
|
|
PULONG pulSrc = (PULONG) (psb->pjSrc + (4 * psb->xSrcStart));
|
|
PULONG pulDst = (PULONG) (psb->pjDst + (4 * psb->xDstStart));
|
|
ULONG cx = psb->cx;
|
|
ULONG cy = psb->cy;
|
|
XLATE *pxlo = psb->pxlo;
|
|
|
|
ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");
|
|
|
|
while(1)
|
|
{
|
|
|
|
pulSrcTemp = pulSrc;
|
|
pulDstTemp = pulDst;
|
|
cxTemp = cx;
|
|
|
|
while(cxTemp--)
|
|
{
|
|
*(pulDstTemp++) = pxlo->ulTranslate(*(pulSrcTemp++));
|
|
}
|
|
|
|
if (--cy)
|
|
{
|
|
pulSrc = (PULONG) (((PBYTE) pulSrc) + psb->lDeltaSrc);
|
|
pulDst = (PULONG) (((PBYTE) pulDst) + psb->lDeltaDst);
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* vSrcCopyS32D32Identity
|
|
*
|
|
* 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.
|
|
*
|
|
* History:
|
|
* 06-Feb-1991 -by- Patrick Haluptzok patrickh
|
|
* Wrote it.
|
|
\**************************************************************************/
|
|
|
|
VOID vSrcCopyS32D32Identity(PBLTINFO psb)
|
|
{
|
|
// These are our holding variables
|
|
|
|
PULONG pulSrc = (PULONG) (psb->pjSrc + (4 * psb->xSrcStart));
|
|
PULONG pulDst = (PULONG) (psb->pjDst + (4 * psb->xDstStart));
|
|
ULONG cx = psb->cx;
|
|
ULONG cy = psb->cy;
|
|
|
|
ASSERTGDI(cy != 0, "ERROR: Src Move cy == 0");
|
|
|
|
if (psb->xDir < 0)
|
|
{
|
|
pulSrc -= (cx - 1);
|
|
pulDst -= (cx - 1);
|
|
}
|
|
|
|
cx = cx << 2;
|
|
|
|
while(1)
|
|
{
|
|
RtlMoveMemory((PVOID)pulDst, (PVOID)pulSrc, cx);
|
|
|
|
if (--cy)
|
|
{
|
|
pulSrc = (PULONG) (((PBYTE) pulSrc) + psb->lDeltaSrc);
|
|
pulDst = (PULONG) (((PBYTE) pulDst) + psb->lDeltaDst);
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
}
|