487 lines
11 KiB
C
487 lines
11 KiB
C
/*
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* $TOG: cfb8cppl.c /main/16 1998/02/09 14:04:13 kaleb $
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*
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Copyright 1990, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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*
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* Author: Keith Packard, MIT X Consortium
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*/
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/* $XFree86: xc/programs/Xserver/cfb/cfbcppl.c,v 1.7 2003/07/16 01:38:37 dawes Exp $ */
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#include "X.h"
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#include "Xmd.h"
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#include "gcstruct.h"
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#include "window.h"
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#include "pixmapstr.h"
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#include "scrnintstr.h"
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#include "windowstr.h"
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#include "cfb.h"
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#if PSZ == 8
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#undef PSZ /* for maskbits.h */
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#include "maskbits.h"
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#define PSZ 8
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#include "mergerop.h"
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#else /* PSZ==8 */
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#include "cfbtab.h" /* provides starttab, endttab, partmasks */
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#endif /* PSZ==8 */
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void
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cfbCopyImagePlane(
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DrawablePtr pSrcDrawable,
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DrawablePtr pDstDrawable,
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int rop,
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RegionPtr prgnDst,
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DDXPointPtr pptSrc,
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unsigned long planemask)
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{
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/* note: there must be some sort of trick behind,
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passing a planemask value with all bits set
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whilst using the current planemask for the bitPlane value. */
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#if PSZ == 8
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cfbCopyPlane8to1 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc,
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(unsigned long) ~0L, planemask);
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#endif
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#if PSZ == 16
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cfbCopyPlane16to1 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc,
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(unsigned long) ~0L, planemask);
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#endif
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#if PSZ == 24
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cfbCopyPlane24to1 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc,
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(unsigned long) ~0L, planemask);
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#endif
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#if PSZ == 32
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cfbCopyPlane32to1 (pSrcDrawable, pDstDrawable, rop, prgnDst, pptSrc,
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(unsigned long) ~0L, planemask);
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#endif
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}
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#if PSZ == 8
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#if BITMAP_BIT_ORDER == MSBFirst
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#define LeftMost (MFB_PPW-1)
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#define StepBit(bit, inc) ((bit) -= (inc))
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#else
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#define LeftMost 0
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#define StepBit(bit, inc) ((bit) += (inc))
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#endif
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#define GetBits(psrc, nBits, curBit, bitPos, bits) {\
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bits = 0; \
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while (nBits--) \
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{ \
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bits |= (PixelType)(((*psrc++ >> bitPos) & 1)) << curBit; \
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StepBit (curBit, 1); \
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} \
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}
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void
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cfbCopyPlane8to1(
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DrawablePtr pSrcDrawable,
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DrawablePtr pDstDrawable,
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int rop,
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RegionPtr prgnDst,
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DDXPointPtr pptSrc,
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unsigned long planemask,
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unsigned long bitPlane)
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{
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int srcx, srcy, dstx, dsty, width, height;
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unsigned char *psrcBase;
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PixelType *pdstBase;
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int widthSrc, widthDst;
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unsigned char *psrcLine;
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PixelType *pdstLine;
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register unsigned char *psrc;
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register int i;
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register int curBit;
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register int bitPos;
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register CfbBits bits;
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register PixelType *pdst;
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PixelType startmask, endmask;
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int niStart = 0, niEnd = 0;
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int bitStart = 0, bitEnd = 0;
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int nl, nlMiddle;
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int nbox;
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BoxPtr pbox;
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MROP_DECLARE()
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if (!(planemask & 1))
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return;
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if (rop != GXcopy)
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MROP_INITIALIZE (rop, planemask);
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cfbGetByteWidthAndPointer (pSrcDrawable, widthSrc, psrcBase)
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mfbGetPixelWidthAndPointer (pDstDrawable, widthDst, pdstBase)
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bitPos = ffs (bitPlane) - 1;
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nbox = REGION_NUM_RECTS(prgnDst);
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pbox = REGION_RECTS(prgnDst);
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while (nbox--)
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{
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dstx = pbox->x1;
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dsty = pbox->y1;
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srcx = pptSrc->x;
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srcy = pptSrc->y;
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width = pbox->x2 - pbox->x1;
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height = pbox->y2 - pbox->y1;
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pbox++;
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pptSrc++;
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psrcLine = psrcBase + srcy * widthSrc + srcx;
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pdstLine = mfbScanline(pdstBase, dstx, dsty, widthDst);
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dstx &= MFB_PIM;
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if (dstx + width <= MFB_PPW)
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{
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maskpartialbits(dstx, width, startmask);
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nlMiddle = 0;
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endmask = 0;
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}
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else
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{
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maskbits (dstx, width, startmask, endmask, nlMiddle);
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}
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if (startmask)
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{
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niStart = min(MFB_PPW - dstx, width);
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bitStart = LeftMost;
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StepBit (bitStart, dstx);
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}
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if (endmask)
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{
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niEnd = (dstx + width) & MFB_PIM;
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bitEnd = LeftMost;
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}
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if (rop == GXcopy)
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{
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while (height--)
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{
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psrc = psrcLine;
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pdst = pdstLine;
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psrcLine += widthSrc;
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mfbScanlineInc(pdstLine, widthDst);
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if (startmask)
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{
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i = niStart;
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curBit = bitStart;
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GetBits (psrc, i, curBit, bitPos, bits);
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*pdst = (*pdst & ~startmask) | bits;
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pdst++;
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}
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nl = nlMiddle;
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while (nl--)
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{
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i = MFB_PPW;
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curBit = LeftMost;
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GetBits (psrc, i, curBit, bitPos, bits);
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*pdst++ = bits;
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}
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if (endmask)
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{
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i = niEnd;
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curBit = bitEnd;
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GetBits (psrc, i, curBit, bitPos, bits);
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*pdst = (*pdst & ~endmask) | bits;
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}
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}
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}
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else
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{
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while (height--)
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{
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psrc = psrcLine;
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pdst = pdstLine;
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psrcLine += widthSrc;
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mfbScanlineInc(pdstLine, widthDst);
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if (startmask)
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{
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i = niStart;
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curBit = bitStart;
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GetBits (psrc, i, curBit, bitPos, bits);
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*pdst = MROP_MASK(bits, *pdst, startmask);
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pdst++;
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}
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nl = nlMiddle;
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while (nl--)
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{
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i = MFB_PPW;
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curBit = LeftMost;
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GetBits (psrc, i, curBit, bitPos, bits);
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*pdst = MROP_SOLID(bits, *pdst);
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pdst++;
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}
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if (endmask)
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{
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i = niEnd;
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curBit = bitEnd;
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GetBits (psrc, i, curBit, bitPos, bits);
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*pdst = MROP_MASK (bits, *pdst, endmask);
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}
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}
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}
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}
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}
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#else /* PSZ == 8 */
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#define mfbmaskbits(x, w, startmask, endmask, nlw) \
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startmask = starttab[(x)&0x1f]; \
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endmask = endtab[((x)+(w)) & 0x1f]; \
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if (startmask) \
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nlw = (((w) - (32 - ((x)&0x1f))) >> 5); \
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else \
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nlw = (w) >> 5;
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#define mfbmaskpartialbits(x, w, mask) \
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mask = partmasks[(x)&0x1f][(w)&0x1f];
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#define LeftMost 0
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#define StepBit(bit, inc) ((bit) += (inc))
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#if PSZ == 24
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#define GetBits(psrc, nBits, curBit, bitPos, bits) {\
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bits = 0; \
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while (nBits--) \
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{ \
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if (bitPos < 8) \
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{ \
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bits |= ((*psrc++ >> bitPos) & 1) << curBit; \
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psrc += 2; \
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} \
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else if (bitPos < 16) \
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{ \
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psrc++; \
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bits |= ((*psrc++ >> (bitPos - 8)) & 1) << curBit; \
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psrc++; \
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} \
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else \
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{ \
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psrc += 2; \
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bits |= ((*psrc++ >> (bitPos - 16)) & 1) << curBit; \
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} \
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StepBit (curBit, 1); \
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} \
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}
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#else
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#define GetBits(psrc, nBits, curBit, bitPos, bits) {\
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bits = 0; \
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while (nBits--) \
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{ \
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bits |= ((*psrc++ >> bitPos) & 1) << curBit; \
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StepBit (curBit, 1); \
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} \
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}
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#endif
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void
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#if PSZ == 16
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cfbCopyPlane16to1
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#endif
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#if PSZ == 24
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cfbCopyPlane24to1
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#endif
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#if PSZ == 32
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cfbCopyPlane32to1
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#endif
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(
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DrawablePtr pSrcDrawable,
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DrawablePtr pDstDrawable,
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int rop,
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RegionPtr prgnDst,
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DDXPointPtr pptSrc,
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unsigned long planemask,
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unsigned long bitPlane)
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{
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int srcx, srcy, dstx, dsty, width, height;
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CfbBits *psrcBase;
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CfbBits *pdstBase;
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int widthSrc, widthDst;
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#if PSZ == 16
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unsigned short *psrcLine;
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register unsigned short *psrc;
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#endif
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#if PSZ == 24
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unsigned char *psrcLine;
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register unsigned char *psrc;
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#endif
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#if PSZ == 32
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unsigned int *psrcLine;
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register unsigned int *psrc;
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#endif
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unsigned int *pdstLine;
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register unsigned int *pdst;
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register int i;
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register int curBit;
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register int bitPos;
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register unsigned int bits;
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unsigned int startmask = 0, endmask = 0;
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int niStart = 0, niEnd = 0;
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int bitStart = 0, bitEnd = 0;
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int nl, nlMiddle;
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int nbox;
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BoxPtr pbox;
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int result;
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if (!(planemask & 1))
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return;
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/* must explicitly ask for "int" widths, as code below expects it */
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/* on some machines (Alpha), "long" and "int" are not the same size */
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cfbGetTypedWidthAndPointer (pSrcDrawable, widthSrc, psrcBase, int, CfbBits)
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cfbGetTypedWidthAndPointer (pDstDrawable, widthDst, pdstBase, int, CfbBits)
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#if PSZ == 16
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widthSrc <<= 1;
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#endif
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#if PSZ == 24
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widthSrc <<= 2;
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#endif
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bitPos = ffs (bitPlane) - 1;
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nbox = REGION_NUM_RECTS(prgnDst);
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pbox = REGION_RECTS(prgnDst);
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while (nbox--)
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{
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dstx = pbox->x1;
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dsty = pbox->y1;
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srcx = pptSrc->x;
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srcy = pptSrc->y;
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width = pbox->x2 - pbox->x1;
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height = pbox->y2 - pbox->y1;
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pbox++;
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pptSrc++;
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#if PSZ == 16
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psrcLine = (unsigned short *)psrcBase + srcy * widthSrc + srcx;
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#endif
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#if PSZ == 24
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psrcLine = (unsigned char *)psrcBase + srcy * widthSrc + srcx * 3;
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#endif
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#if PSZ == 32
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psrcLine = (unsigned int *)psrcBase + srcy * widthSrc + srcx;
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#endif
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pdstLine = (unsigned int *)pdstBase + dsty * widthDst + (dstx >> 5);
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if (dstx + width <= 32)
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{
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mfbmaskpartialbits(dstx, width, startmask);
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nlMiddle = 0;
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endmask = 0;
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}
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else
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{
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mfbmaskbits (dstx, width, startmask, endmask, nlMiddle);
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}
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if (startmask)
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{
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niStart = 32 - (dstx & 0x1f);
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bitStart = LeftMost;
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StepBit (bitStart, (dstx & 0x1f));
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}
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if (endmask)
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{
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niEnd = (dstx + width) & 0x1f;
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bitEnd = LeftMost;
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}
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if (rop == GXcopy)
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{
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while (height--)
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{
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psrc = psrcLine;
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pdst = pdstLine;
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psrcLine += widthSrc;
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pdstLine += widthDst;
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if (startmask)
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{
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i = niStart;
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curBit = bitStart;
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GetBits (psrc, i, curBit, bitPos, bits);
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*pdst = (*pdst & ~startmask) | bits;
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pdst++;
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}
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nl = nlMiddle;
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while (nl--)
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{
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i = 32;
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curBit = LeftMost;
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GetBits (psrc, i, curBit, bitPos, bits);
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*pdst++ = bits;
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}
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if (endmask)
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{
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i = niEnd;
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curBit = bitEnd;
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GetBits (psrc, i, curBit, bitPos, bits);
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*pdst = (*pdst & ~endmask) | bits;
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}
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}
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}
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else
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{
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while (height--)
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{
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psrc = psrcLine;
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pdst = pdstLine;
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psrcLine += widthSrc;
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pdstLine += widthDst;
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if (startmask)
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{
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i = niStart;
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curBit = bitStart;
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GetBits (psrc, i, curBit, bitPos, bits);
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DoRop (result, rop, bits, *pdst);
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*pdst = (*pdst & ~startmask) |
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(result & startmask);
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pdst++;
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}
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nl = nlMiddle;
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while (nl--)
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{
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i = 32;
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curBit = LeftMost;
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GetBits (psrc, i, curBit, bitPos, bits);
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DoRop (result, rop, bits, *pdst);
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*pdst = result;
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++pdst;
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}
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if (endmask)
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{
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i = niEnd;
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curBit = bitEnd;
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GetBits (psrc, i, curBit, bitPos, bits);
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DoRop (result, rop, bits, *pdst);
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*pdst = (*pdst & ~endmask) |
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(result & endmask);
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}
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}
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}
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}
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}
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#endif /* PSZ == 8 */
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