167 lines
5.8 KiB
C
167 lines
5.8 KiB
C
/* $XFree86$ */
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/* $XConsortium: iplgetsp.c,v 5.14 94/04/17 20:28:50 dpw Exp $ */
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/***********************************************************
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Copyright (c) 1987 X Consortium
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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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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X CONSORTIUM 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 X Consortium 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 X Consortium.
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Digital not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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/* Modified nov 94 by Martin Schaller (Martin_Schaller@maus.r.de) for use with
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interleaved planes */
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <X11/X.h>
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#include <X11/Xmd.h>
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#include "servermd.h"
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#include "misc.h"
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#include "region.h"
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#include "gc.h"
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#include "windowstr.h"
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#include "pixmapstr.h"
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#include "scrnintstr.h"
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#include "ipl.h"
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#include "iplmskbits.h"
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#include "iplpack.h"
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/* GetSpans -- for each span, gets bits from drawable starting at ppt[i]
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* and continuing for pwidth[i] bits
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* Each scanline returned will be server scanline padded, i.e., it will come
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* out to an integral number of words.
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*/
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void
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iplGetSpans(pDrawable, wMax, ppt, pwidth, nspans, pchardstStart)
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DrawablePtr pDrawable; /* drawable from which to get bits */
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int wMax; /* largest value of all *pwidths */
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register DDXPointPtr ppt; /* points to start copying from */
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int *pwidth; /* list of number of bits to copy */
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int nspans; /* number of scanlines to copy */
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char *pchardstStart; /* where to put the bits */
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{
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unsigned long *pdst = (unsigned long *)pchardstStart;
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INTER_DECLAREG(*psrc); /* where to get the bits */
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INTER_DECLAREGP(tmpSrc); /* scratch buffer for bits */
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INTER_DECLAREG(*psrcBase); /* start of src bitmap */
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int widthSrc; /* width of pixmap in bytes */
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register DDXPointPtr pptLast; /* one past last point to get */
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int xEnd; /* last pixel to copy from */
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register int nstart;
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int nend;
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INTER_DECLAREG(startmask);
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INTER_DECLAREG(endmask);
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int nlMiddle, nl, srcBit;
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int w,longs;
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INTER_DECLAREG(*tmppdst);
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INTER_DECLAREG(*ipdst);
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switch (pDrawable->bitsPerPixel) {
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case 1:
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mfbGetSpans(pDrawable, wMax, ppt, pwidth, nspans, pchardstStart);
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return;
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case INTER_PLANES:
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break;
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default:
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FatalError("iplGetSpans: invalid depth\n");
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}
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longs = NUM_LONGS(INTER_PLANES, 0, wMax);
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tmppdst = (unsigned short *)
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ALLOCATE_LOCAL(NUM_TEMP_BYTES(INTER_PLANES, longs));
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iplGetGroupWidthAndPointer (pDrawable, widthSrc, psrcBase)
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pptLast = ppt + nspans;
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while(ppt < pptLast)
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{
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xEnd = min(ppt->x + *pwidth, (widthSrc / INTER_PLANES) << INTER_PGSH);
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psrc = psrcBase + ppt->y * widthSrc +
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(ppt->x >> INTER_PGSH) * INTER_PLANES;
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w = xEnd - ppt->x;
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srcBit = ppt->x & INTER_PIM;
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ipdst = tmppdst;
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if (srcBit + w <= INTER_PPG)
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{
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INTER_getbits(psrc, srcBit, w, tmpSrc);
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INTER_putbits(tmpSrc, 0, w, ipdst, ~((unsigned long)0));
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}
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else
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{
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INTER_maskbits(ppt->x, w, startmask, endmask, nlMiddle);
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nstart = 0;
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if (startmask)
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{
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nstart = INTER_PPG - srcBit;
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INTER_getbits(psrc, srcBit, nstart, tmpSrc);
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INTER_putbits(tmpSrc, 0, nstart, ipdst, ~((unsigned long)0));
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if(srcBit + nstart >= INTER_PPG)
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INTER_NEXT_GROUP(psrc);
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}
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nl = nlMiddle;
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while (nl--)
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{
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INTER_putbits(psrc, nstart, INTER_PPG, ipdst, ~((unsigned long)0));
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INTER_NEXT_GROUP(psrc);
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INTER_NEXT_GROUP(ipdst);
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}
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if (endmask)
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{
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nend = xEnd & INTER_PIM;
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INTER_getbits(psrc, 0, nend, tmpSrc);
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INTER_putbits(tmpSrc, nstart, nend, ipdst, ~((unsigned long)0));
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}
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}
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longs=(w * INTER_PLANES + 31)/32;
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iplPackLine(INTER_PLANES, longs, tmppdst, pdst);
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pdst+=longs;
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ppt++;
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pwidth++;
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}
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DEALLOCATE_LOCAL(tmppdst);
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}
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