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Diffstat (limited to 'xorg-server/mfb/mfbpixmap.c')
| -rw-r--r-- | xorg-server/mfb/mfbpixmap.c | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/xorg-server/mfb/mfbpixmap.c b/xorg-server/mfb/mfbpixmap.c new file mode 100644 index 000000000..34bb33d89 --- /dev/null +++ b/xorg-server/mfb/mfbpixmap.c @@ -0,0 +1,298 @@ +/*********************************************************** + +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); +} |