R6.6 is the Xorg base-line
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Kaleb Keithley
294
mfb/mfbpixmap.c
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294
mfb/mfbpixmap.c
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/***********************************************************
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Copyright 1987, 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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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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/* $Xorg: mfbpixmap.c,v 1.4 2001/02/09 02:05:19 xorgcvs Exp $ */
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/* pixmap management
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written by drewry, september 1986
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on a monchrome device, a pixmap is a bitmap.
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*/
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#include "Xmd.h"
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#include "scrnintstr.h"
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#include "pixmapstr.h"
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#include "maskbits.h"
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#include "mfb.h"
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#include "mi.h"
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#include "servermd.h"
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#ifndef LOWMEMFTPT
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PixmapPtr
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mfbCreatePixmap (pScreen, width, height, depth)
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ScreenPtr pScreen;
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int width;
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int height;
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int depth;
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{
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PixmapPtr pPixmap;
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int datasize;
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int paddedWidth;
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if (depth != 1)
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return NullPixmap;
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paddedWidth = BitmapBytePad(width);
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datasize = height * paddedWidth;
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pPixmap = AllocatePixmap(pScreen, datasize);
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if (!pPixmap)
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return NullPixmap;
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pPixmap->drawable.type = DRAWABLE_PIXMAP;
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pPixmap->drawable.class = 0;
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pPixmap->drawable.pScreen = pScreen;
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pPixmap->drawable.depth = depth;
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pPixmap->drawable.bitsPerPixel = depth;
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pPixmap->drawable.id = 0;
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pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
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pPixmap->drawable.x = 0;
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pPixmap->drawable.y = 0;
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pPixmap->drawable.width = width;
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pPixmap->drawable.height = height;
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pPixmap->devKind = paddedWidth;
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pPixmap->refcnt = 1;
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#ifdef PIXPRIV
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pPixmap->devPrivate.ptr = datasize ?
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(pointer)((char *)pPixmap + pScreen->totalPixmapSize) : NULL;
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#else
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pPixmap->devPrivate.ptr = (pointer)(pPixmap + 1);
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#endif
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return pPixmap;
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}
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#endif /* ifndef LOWMEMFTPT */
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Bool
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mfbDestroyPixmap(pPixmap)
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PixmapPtr pPixmap;
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{
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if(--pPixmap->refcnt)
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return TRUE;
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xfree(pPixmap);
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return TRUE;
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}
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PixmapPtr
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mfbCopyPixmap(pSrc)
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register PixmapPtr pSrc;
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{
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register PixmapPtr pDst;
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int size;
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ScreenPtr pScreen;
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size = pSrc->drawable.height * pSrc->devKind;
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pScreen = pSrc->drawable.pScreen;
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pDst = (*pScreen->CreatePixmap) (pScreen, pSrc->drawable.width,
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pSrc->drawable.height, pSrc->drawable.depth);
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if (!pDst)
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return NullPixmap;
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memmove((char *)pDst->devPrivate.ptr, (char *)pSrc->devPrivate.ptr, size);
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return pDst;
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}
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/* replicates a pattern to be a full 32 bits wide.
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relies on the fact that each scnaline is longword padded.
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doesn't do anything if pixmap is not a factor of 32 wide.
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changes width field of pixmap if successful, so that the fast
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XRotatePixmap code gets used if we rotate the pixmap later.
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calculate number of times to repeat
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for each scanline of pattern
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zero out area to be filled with replicate
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left shift and or in original as many times as needed
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*/
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void
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mfbPadPixmap(pPixmap)
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PixmapPtr pPixmap;
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{
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register int width = pPixmap->drawable.width;
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register int h;
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register PixelType mask;
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register PixelType *p;
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register PixelType bits; /* real pattern bits */
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register int i;
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int rep; /* repeat count for pattern */
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if (width >= PPW)
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return;
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rep = PPW/width;
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if (rep*width != PPW)
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return;
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mask = endtab[width];
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p = (PixelType *)(pPixmap->devPrivate.ptr);
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for (h=0; h < pPixmap->drawable.height; h++)
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{
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*p &= mask;
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bits = *p;
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for(i=1; i<rep; i++)
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{
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bits = SCRRIGHT(bits, width);
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*p |= bits;
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}
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p++;
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}
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pPixmap->drawable.width = PPW;
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}
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/* Rotates pixmap pPix by w pixels to the right on the screen. Assumes that
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* words are PPW bits wide, and that the least significant bit appears on the
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* left.
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*/
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void
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mfbXRotatePixmap(pPix, rw)
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PixmapPtr pPix;
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register int rw;
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{
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register PixelType *pw, *pwFinal;
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register PixelType t;
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if (pPix == NullPixmap)
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return;
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pw = (PixelType *)pPix->devPrivate.ptr;
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rw %= (int)pPix->drawable.width;
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if (rw < 0)
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rw += (int)pPix->drawable.width;
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if(pPix->drawable.width == PPW)
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{
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pwFinal = pw + pPix->drawable.height;
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while(pw < pwFinal)
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{
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t = *pw;
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*pw++ = SCRRIGHT(t, rw) |
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(SCRLEFT(t, (PPW-rw)) & endtab[rw]);
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}
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}
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else
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{
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/* We no longer do this. Validate doesn't try to rotate odd-size
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* tiles or stipples. mfbUnnatural<tile/stipple>FS works directly off
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* the unrotate tile/stipple in the GC
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*/
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ErrorF("X internal error: trying to rotate odd-sized pixmap.\n");
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}
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}
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/* Rotates pixmap pPix by h lines. Assumes that h is always less than
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pPix->height
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works on any width.
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*/
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void
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mfbYRotatePixmap(pPix, rh)
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register PixmapPtr pPix;
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int rh;
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{
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int nbyDown; /* bytes to move down to row 0; also offset of
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row rh */
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int nbyUp; /* bytes to move up to line rh; also
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offset of first line moved down to 0 */
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char *pbase;
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char *ptmp;
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int height;
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if (pPix == NullPixmap)
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return;
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height = (int) pPix->drawable.height;
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rh %= height;
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if (rh < 0)
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rh += height;
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pbase = (char *)pPix->devPrivate.ptr;
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nbyDown = rh * pPix->devKind;
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nbyUp = (pPix->devKind * height) - nbyDown;
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if(!(ptmp = (char *)ALLOCATE_LOCAL(nbyUp)))
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return;
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memmove(ptmp, pbase, nbyUp); /* save the low rows */
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memmove(pbase, pbase+nbyUp, nbyDown); /* slide the top rows down */
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memmove(pbase+nbyDown, ptmp, nbyUp); /* move lower rows up to row rh */
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DEALLOCATE_LOCAL(ptmp);
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}
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void
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mfbCopyRotatePixmap(psrcPix, ppdstPix, xrot, yrot)
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register PixmapPtr psrcPix, *ppdstPix;
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int xrot, yrot;
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{
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register PixmapPtr pdstPix;
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if ((pdstPix = *ppdstPix) &&
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(pdstPix->devKind == psrcPix->devKind) &&
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(pdstPix->drawable.height == psrcPix->drawable.height))
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{
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memmove((char *)pdstPix->devPrivate.ptr,
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(char *)psrcPix->devPrivate.ptr,
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psrcPix->drawable.height * psrcPix->devKind);
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pdstPix->drawable.width = psrcPix->drawable.width;
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pdstPix->drawable.serialNumber = NEXT_SERIAL_NUMBER;
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}
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else
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{
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if (pdstPix)
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/* FIX XBUG 6168 */
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(*pdstPix->drawable.pScreen->DestroyPixmap)(pdstPix);
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*ppdstPix = pdstPix = mfbCopyPixmap(psrcPix);
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if (!pdstPix)
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return;
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}
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mfbPadPixmap(pdstPix);
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if (xrot)
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mfbXRotatePixmap(pdstPix, xrot);
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if (yrot)
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mfbYRotatePixmap(pdstPix, yrot);
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}
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