diff options
Diffstat (limited to 'hw/xfree86/xf4bpp/ppcImg.c')
| -rw-r--r-- | hw/xfree86/xf4bpp/ppcImg.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/hw/xfree86/xf4bpp/ppcImg.c b/hw/xfree86/xf4bpp/ppcImg.c new file mode 100644 index 000000000..275db433a --- /dev/null +++ b/hw/xfree86/xf4bpp/ppcImg.c @@ -0,0 +1,118 @@ +/* $XFree86: xc/programs/Xserver/hw/xfree86/xf4bpp/ppcImg.c,v 1.5 2003/02/18 21:29:59 tsi Exp $ */ +/* + * Copyright IBM Corporation 1987,1988,1989 + * + * 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 IBM not be + * used in advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * + * IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING + * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL + * IBM 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. + * +*/ + +/* $XConsortium: ppcImg.c /main/4 1996/02/21 17:57:53 kaleb $ */ + +#include "xf4bpp.h" +#include "OScompiler.h" +#include "mi.h" +#include "scrnintstr.h" +#include "servermd.h" + +/* Was MIGETIMAGE -- public entry for the GetImage Request + * We're getting the image into a memory buffer. While we have to use GetSpans + * to read a line from the device ( since we don't know what that looks like ) , + * we can just write into the destination buffer + * + * two different strategies are used, depending on whether we're getting the + * image in Z format or XY format + * Z format: + * Line at a time, GetSpans a line and bcopy it to the destination + * buffer, except that if the planemask is not all ones, we create a + * temporary pixmap and do a SetSpans into it ( to get bits turned off ) + * and then another GetSpans to get stuff back ( because pixmaps are + * opaque, and we are passed in the memory to write into ) . This is + * completely ugly and slow but works, but the interfaces just aren't + * designed for this case. Life is hard. + * XY format: + * get the single plane specified in planemask + */ +void +xf4bppGetImage( pDraw, sx, sy, w, h, format, planeMask, pdstLine ) + DrawablePtr pDraw ; + int sx, sy, w, h ; + unsigned int format ; + unsigned long planeMask ; + char * pdstLine ; +{ +#if 1 + int depth, i, linelength, width ; + DDXPointRec pt ; + char *pbits ; + XID gcv[2] ; + PixmapPtr pPixmap = (PixmapPtr) NULL ; + GCPtr pGC ; + char *pDst = pdstLine ; + + depth = pDraw->depth ; + if ( format == ZPixmap ) { + linelength = PixmapBytePad( w, depth ) ; +/* if ( pDraw->type == DRAWABLE_WINDOW ) { */ + sx += pDraw->x ; + sy += pDraw->y ; +/* } */ + if ( ( ( ( 1 << pDraw->depth ) - 1 ) & planeMask ) + != (unsigned)( 1 << pDraw->depth ) - 1 ) { + pGC = GetScratchGC( depth, pDraw->pScreen ) ; + pPixmap = (PixmapPtr) + (* pDraw->pScreen->CreatePixmap)( pDraw->pScreen, w, h, depth ) ; + gcv[0] = GXcopy ; + gcv[1] = planeMask ; + DoChangeGC( pGC, GCPlaneMask | GCFunction, gcv, 0 ) ; + ValidateGC( (DrawablePtr)pPixmap, pGC ) ; + + pbits = (char *)ALLOCATE_LOCAL(w); + + for ( i = 0 ; i < h ; i++ ) { + pt.x = sx ; + pt.y = sy + i ; + width = w ; + (* pDraw->pScreen->GetSpans)( pDraw, w, &pt, &width, 1, pbits ) ; + pt.x = 0 ; + pt.y = i ; + width = w ; + if ( planeMask & ((1 << depth) - 1) ) /* GJA -- mfb bug */ + (* pGC->ops->SetSpans)( (DrawablePtr)pPixmap, pGC, pbits, &pt, &width, 1, TRUE ) ; + (* pDraw->pScreen->GetSpans)( (DrawablePtr)pPixmap, w, &pt, &width, 1, pDst ) ; + pDst += linelength ; + } + + DEALLOCATE_LOCAL(pbits) ; + (* pGC->pScreen->DestroyPixmap)( pPixmap ) ; + FreeScratchGC( pGC ) ; + return ; + } + + for ( i = 0 ; i < h ; i++ ) { + pt.x = sx ; + pt.y = sy + i ; + width = w ; + (* pDraw->pScreen->GetSpans)( pDraw, w, &pt, &width, 1, pDst ) ; + pDst += linelength ; + } + } + else +#endif + miGetImage( pDraw, sx, sy, w, h, format, planeMask, pdstLine ) ; +} |