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-rw-r--r--xorg-server/mfb/mfbpixmap.c298
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diff --git a/xorg-server/mfb/mfbpixmap.c b/xorg-server/mfb/mfbpixmap.c
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index 34bb33d89..000000000
--- a/xorg-server/mfb/mfbpixmap.c
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-/***********************************************************
-
-Copyright 1987, 1998 The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-
-Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
-
- All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for any purpose and without fee is hereby granted,
-provided that the above copyright notice appear in all copies and that
-both that copyright notice and this permission notice appear in
-supporting documentation, and that the name of Digital not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.
-
-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
-ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-SOFTWARE.
-
-******************************************************************/
-
-/* pixmap management
- written by drewry, september 1986
-
- on a monchrome device, a pixmap is a bitmap.
-*/
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <string.h>
-
-#include <X11/Xmd.h>
-#include "scrnintstr.h"
-#include "pixmapstr.h"
-#include "maskbits.h"
-
-#include "mfb.h"
-#include "mi.h"
-
-#include "servermd.h"
-
-
-PixmapPtr
-mfbCreatePixmap (pScreen, width, height, depth, usage_hint)
- ScreenPtr pScreen;
- int width;
- int height;
- int depth;
- unsigned usage_hint;
-{
- PixmapPtr pPixmap;
- size_t datasize;
- size_t paddedWidth;
-
- if (depth != 1)
- return NullPixmap;
- paddedWidth = BitmapBytePad(width);
- if (paddedWidth / 4 > 32767 || height > 32767)
- return NullPixmap;
- datasize = height * paddedWidth;
- pPixmap = AllocatePixmap(pScreen, datasize);
- if (!pPixmap)
- return NullPixmap;
- pPixmap->drawable.type = DRAWABLE_PIXMAP;
- pPixmap->drawable.class = 0;
- pPixmap->drawable.pScreen = pScreen;
- pPixmap->drawable.depth = depth;
- pPixmap->drawable.bitsPerPixel = depth;
- pPixmap->drawable.id = 0;
- pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
- pPixmap->drawable.x = 0;
- pPixmap->drawable.y = 0;
- pPixmap->drawable.width = width;
- pPixmap->drawable.height = height;
- pPixmap->devKind = paddedWidth;
- pPixmap->refcnt = 1;
- pPixmap->devPrivate.ptr = datasize ?
- (pointer)((char *)pPixmap + pScreen->totalPixmapSize) : NULL;
- pPixmap->usage_hint = usage_hint;
- return pPixmap;
-}
-
-
-Bool
-mfbDestroyPixmap(pPixmap)
- PixmapPtr pPixmap;
-{
- if(--pPixmap->refcnt)
- return TRUE;
- dixFreePrivates(pPixmap->devPrivates);
- xfree(pPixmap);
- return TRUE;
-}
-
-
-PixmapPtr
-mfbCopyPixmap(pSrc)
- register PixmapPtr pSrc;
-{
- register PixmapPtr pDst;
- int size;
- ScreenPtr pScreen;
-
- size = pSrc->drawable.height * pSrc->devKind;
- pScreen = pSrc->drawable.pScreen;
- pDst = (*pScreen->CreatePixmap) (pScreen, pSrc->drawable.width,
- pSrc->drawable.height, pSrc->drawable.depth, 0);
- if (!pDst)
- return NullPixmap;
- memmove((char *)pDst->devPrivate.ptr, (char *)pSrc->devPrivate.ptr, size);
- return pDst;
-}
-
-
-/* replicates a pattern to be a full 32 bits wide.
- relies on the fact that each scnaline is longword padded.
- doesn't do anything if pixmap is not a factor of 32 wide.
- changes width field of pixmap if successful, so that the fast
- XRotatePixmap code gets used if we rotate the pixmap later.
-
- calculate number of times to repeat
- for each scanline of pattern
- zero out area to be filled with replicate
- left shift and or in original as many times as needed
-*/
-void
-mfbPadPixmap(pPixmap)
- PixmapPtr pPixmap;
-{
- register int width = pPixmap->drawable.width;
- register int h;
- register PixelType mask;
- register PixelType *p;
- register PixelType bits; /* real pattern bits */
- register int i;
- int rep; /* repeat count for pattern */
-
- if (width >= PPW)
- return;
-
- rep = PPW/width;
- if (rep*width != PPW)
- return;
-
- mask = endtab[width];
-
- p = (PixelType *)(pPixmap->devPrivate.ptr);
- for (h=0; h < pPixmap->drawable.height; h++)
- {
- *p &= mask;
- bits = *p;
- for(i=1; i<rep; i++)
- {
- bits = SCRRIGHT(bits, width);
- *p |= bits;
- }
- p++;
- }
- pPixmap->drawable.width = PPW;
-}
-
-/* Rotates pixmap pPix by w pixels to the right on the screen. Assumes that
- * words are PPW bits wide, and that the least significant bit appears on the
- * left.
- */
-void
-mfbXRotatePixmap(pPix, rw)
- PixmapPtr pPix;
- register int rw;
-{
- register PixelType *pw, *pwFinal;
- register PixelType t;
-
- if (pPix == NullPixmap)
- return;
-
- pw = (PixelType *)pPix->devPrivate.ptr;
- rw %= (int)pPix->drawable.width;
- if (rw < 0)
- rw += (int)pPix->drawable.width;
- if(pPix->drawable.width == PPW)
- {
- pwFinal = pw + pPix->drawable.height;
- while(pw < pwFinal)
- {
- t = *pw;
- *pw++ = SCRRIGHT(t, rw) |
- (SCRLEFT(t, (PPW-rw)) & endtab[rw]);
- }
- }
- else
- {
- /* We no longer do this. Validate doesn't try to rotate odd-size
- * tiles or stipples. mfbUnnatural<tile/stipple>FS works directly off
- * the unrotate tile/stipple in the GC
- */
- ErrorF("X internal error: trying to rotate odd-sized pixmap.\n");
- }
-
-}
-
-/* Rotates pixmap pPix by h lines. Assumes that h is always less than
- pPix->height
- works on any width.
- */
-void
-mfbYRotatePixmap(pPix, rh)
- register PixmapPtr pPix;
- int rh;
-{
- int nbyDown; /* bytes to move down to row 0; also offset of
- row rh */
- int nbyUp; /* bytes to move up to line rh; also
- offset of first line moved down to 0 */
- char *pbase;
- char *ptmp;
- int height;
-
- if (pPix == NullPixmap)
- return;
- height = (int) pPix->drawable.height;
- rh %= height;
- if (rh < 0)
- rh += height;
-
- pbase = (char *)pPix->devPrivate.ptr;
-
- nbyDown = rh * pPix->devKind;
- nbyUp = (pPix->devKind * height) - nbyDown;
- if(!(ptmp = (char *)xalloc(nbyUp)))
- return;
-
- memmove(ptmp, pbase, nbyUp); /* save the low rows */
- memmove(pbase, pbase+nbyUp, nbyDown); /* slide the top rows down */
- memmove(pbase+nbyDown, ptmp, nbyUp); /* move lower rows up to row rh */
- xfree(ptmp);
-}
-
-void
-mfbCopyRotatePixmap(psrcPix, ppdstPix, xrot, yrot)
- register PixmapPtr psrcPix, *ppdstPix;
- int xrot, yrot;
-{
- register PixmapPtr pdstPix;
-
- if ((pdstPix = *ppdstPix) &&
- (pdstPix->devKind == psrcPix->devKind) &&
- (pdstPix->drawable.height == psrcPix->drawable.height))
- {
- memmove((char *)pdstPix->devPrivate.ptr,
- (char *)psrcPix->devPrivate.ptr,
- psrcPix->drawable.height * psrcPix->devKind);
- pdstPix->drawable.width = psrcPix->drawable.width;
- pdstPix->drawable.serialNumber = NEXT_SERIAL_NUMBER;
- }
- else
- {
- if (pdstPix)
- /* FIX XBUG 6168 */
- (*pdstPix->drawable.pScreen->DestroyPixmap)(pdstPix);
- *ppdstPix = pdstPix = mfbCopyPixmap(psrcPix);
- if (!pdstPix)
- return;
- }
- mfbPadPixmap(pdstPix);
- if (xrot)
- mfbXRotatePixmap(pdstPix, xrot);
- if (yrot)
- mfbYRotatePixmap(pdstPix, yrot);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 16:35:08 +0000