xenocara/xserver/fb/fbcopy.c

/*
 * Copyright © 1998 Keith Packard
 *
 * 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, and that the name of Keith Packard not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Keith Packard makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL KEITH PACKARD 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.
 */

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include <stdlib.h>

#include "fb.h"

/* Compatibility wrapper, to be removed at next ABI change. */
void
fbCopyRegion (DrawablePtr   pSrcDrawable,
             DrawablePtr   pDstDrawable,
             GCPtr         pGC,
             RegionPtr     pDstRegion,
             int           dx,
             int           dy,
             fbCopyProc    copyProc,
             Pixel         bitPlane,
             void          *closure)
{
    miCopyRegion(pSrcDrawable, pDstDrawable, pGC, pDstRegion, dx, dy, copyProc, bitPlane, closure);
}

/* Compatibility wrapper, to be removed at next ABI change. */
RegionPtr
fbDoCopy (DrawablePtr  pSrcDrawable,
         DrawablePtr   pDstDrawable,
         GCPtr         pGC,
         int           xIn,
         int           yIn,
         int           widthSrc,
         int           heightSrc,
         int           xOut,
         int           yOut,
         fbCopyProc    copyProc,
         Pixel         bitPlane,
         void          *closure)
{
    return miDoCopy(pSrcDrawable, pDstDrawable, pGC, xIn, yIn, widthSrc, heightSrc, xOut, yOut, copyProc, bitPlane, closure);
}

void
fbCopyNtoN (DrawablePtr	pSrcDrawable,
	    DrawablePtr	pDstDrawable,
	    GCPtr	pGC,
	    BoxPtr	pbox,
	    int		nbox,
	    int		dx,
	    int		dy,
	    Bool	reverse,
	    Bool	upsidedown,
	    Pixel	bitplane,
	    void	*closure)
{
    CARD8	alu = pGC ? pGC->alu : GXcopy;
    FbBits	pm = pGC ? fbGetGCPrivate(pGC)->pm : FB_ALLONES;
    FbBits	*src;
    FbStride	srcStride;
    int		srcBpp;
    int		srcXoff, srcYoff;
    FbBits	*dst;
    FbStride	dstStride;
    int		dstBpp;
    int		dstXoff, dstYoff;
    
    fbGetDrawable (pSrcDrawable, src, srcStride, srcBpp, srcXoff, srcYoff);
    fbGetDrawable (pDstDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);

    while (nbox--)
    {
#ifndef FB_ACCESS_WRAPPER /* pixman_blt() doesn't support accessors yet */
	if (pm == FB_ALLONES && alu == GXcopy && !reverse &&
	    !upsidedown)
	{
	    if (!pixman_blt ((uint32_t *)src, (uint32_t *)dst, srcStride, dstStride, srcBpp, dstBpp,
			     (pbox->x1 + dx + srcXoff),
			     (pbox->y1 + dy + srcYoff),
			     (pbox->x1 + dstXoff),
			     (pbox->y1 + dstYoff),
			     (pbox->x2 - pbox->x1),
			     (pbox->y2 - pbox->y1)))
		goto fallback;
	    else
		goto next;
	}
    fallback:
#endif
	fbBlt (src + (pbox->y1 + dy + srcYoff) * srcStride,
	       srcStride,
	       (pbox->x1 + dx + srcXoff) * srcBpp,
	       
	       dst + (pbox->y1 + dstYoff) * dstStride,
	       dstStride,
	       (pbox->x1 + dstXoff) * dstBpp,
	       
	       (pbox->x2 - pbox->x1) * dstBpp,
	       (pbox->y2 - pbox->y1),
	       
	       alu,
	       pm,
	       dstBpp,
	       
	       reverse,
	       upsidedown);
#ifndef FB_ACCESS_WRAPPER
    next:
#endif
	pbox++;
    }    
    fbFinishAccess (pDstDrawable);
    fbFinishAccess (pSrcDrawable);
}

void
fbCopy1toN (DrawablePtr	pSrcDrawable,
	    DrawablePtr	pDstDrawable,
	    GCPtr	pGC,
	    BoxPtr	pbox,
	    int		nbox,
	    int		dx,
	    int		dy,
	    Bool	reverse,
	    Bool	upsidedown,
	    Pixel	bitplane,
	    void	*closure)
{
    FbGCPrivPtr	pPriv = fbGetGCPrivate(pGC);
    FbBits	*src;
    FbStride	srcStride;
    int		srcBpp;
    int		srcXoff, srcYoff;
    FbBits	*dst;
    FbStride	dstStride;
    int		dstBpp;
    int		dstXoff, dstYoff;

    fbGetDrawable (pSrcDrawable, src, srcStride, srcBpp, srcXoff, srcYoff);
    fbGetDrawable (pDstDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);

    while (nbox--)
    {
	if (dstBpp == 1)
	{
	    fbBlt (src + (pbox->y1 + dy + srcYoff) * srcStride,
		   srcStride,
		   (pbox->x1 + dx + srcXoff) * srcBpp,
    
		   dst + (pbox->y1 + dstYoff) * dstStride,
		   dstStride,
		   (pbox->x1 + dstXoff) * dstBpp,
    
		   (pbox->x2 - pbox->x1) * dstBpp,
		   (pbox->y2 - pbox->y1),
    
		   FbOpaqueStipple1Rop(pGC->alu,
				       pGC->fgPixel,pGC->bgPixel),
		   pPriv->pm,
		   dstBpp,
    
		   reverse,
		   upsidedown);
	}
	else
	{
	    fbBltOne ((FbStip *) (src + (pbox->y1 + dy + srcYoff) * srcStride),
		      srcStride*(FB_UNIT/FB_STIP_UNIT),
		      (pbox->x1 + dx + srcXoff),
    
		      dst + (pbox->y1 + dstYoff) * dstStride,
		      dstStride,
		      (pbox->x1 + dstXoff) * dstBpp,
		      dstBpp,
    
		      (pbox->x2 - pbox->x1) * dstBpp,
		      (pbox->y2 - pbox->y1),
    
		      pPriv->and, pPriv->xor,
		      pPriv->bgand, pPriv->bgxor);
	}
	pbox++;
    }

    fbFinishAccess (pDstDrawable);
    fbFinishAccess (pSrcDrawable);
}

void
fbCopyNto1 (DrawablePtr	pSrcDrawable,
	    DrawablePtr	pDstDrawable,
	    GCPtr	pGC,
	    BoxPtr	pbox,
	    int		nbox,
	    int		dx,
	    int		dy,
	    Bool	reverse,
	    Bool	upsidedown,
	    Pixel	bitplane,
	    void	*closure)
{
    FbGCPrivPtr	pPriv = fbGetGCPrivate (pGC);
    
    while (nbox--)
    {
	if (pDstDrawable->bitsPerPixel == 1)
	{
	    FbBits	*src;
	    FbStride    srcStride;
	    int		srcBpp;
	    int		srcXoff, srcYoff;
    
	    FbStip	*dst;
	    FbStride    dstStride;
	    int		dstBpp;
	    int		dstXoff, dstYoff;
	    
	    fbGetDrawable (pSrcDrawable, src, srcStride, srcBpp, srcXoff, srcYoff);
	    fbGetStipDrawable (pDstDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
	    fbBltPlane (src + (pbox->y1+ dy + srcYoff) * srcStride,
			srcStride,
			(pbox->x1 + dx + srcXoff) * srcBpp,
			srcBpp,
    
			dst + (pbox->y1 + dstYoff) * dstStride,
			dstStride,
			(pbox->x1 + dstXoff) * dstBpp,
    
			(pbox->x2 - pbox->x1) * srcBpp,
			(pbox->y2 - pbox->y1),
    
			(FbStip) pPriv->and, (FbStip) pPriv->xor,
			(FbStip) pPriv->bgand, (FbStip) pPriv->bgxor,
			bitplane);
	    fbFinishAccess (pDstDrawable);
	    fbFinishAccess (pSrcDrawable);
	}
	else
	{
	    FbBits	*src;
	    FbStride    srcStride;
	    int		srcBpp;
	    int         srcXoff, srcYoff;

	    FbBits	*dst;
	    FbStride    dstStride;
	    int		dstBpp;
	    int		dstXoff, dstYoff;
    
	    FbStip	*tmp;
	    FbStride    tmpStride;
	    int		width, height;
	    
	    width = pbox->x2 - pbox->x1;
	    height = pbox->y2 - pbox->y1;
	    
	    tmpStride = ((width + FB_STIP_MASK) >> FB_STIP_SHIFT);
	    tmp = malloc(tmpStride * height * sizeof (FbStip));
	    if (!tmp)
		return;
	    
	    fbGetDrawable (pSrcDrawable, src, srcStride, srcBpp, srcXoff, srcYoff);
	    fbGetDrawable (pDstDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
	    
	    fbBltPlane (src + (pbox->y1+ dy + srcYoff) * srcStride,
			srcStride,
			(pbox->x1 + dx + srcXoff) * srcBpp,
			srcBpp,
    
			tmp,
			tmpStride,
			0,
    
			width * srcBpp,
			height,
    
			fbAndStip(GXcopy,FB_ALLONES,FB_ALLONES),
			fbXorStip(GXcopy,FB_ALLONES,FB_ALLONES),
			fbAndStip(GXcopy,0,FB_ALLONES),
			fbXorStip(GXcopy,0,FB_ALLONES),
			bitplane);
	    fbBltOne (tmp,
		      tmpStride,
		      0,
    
		      dst + (pbox->y1 + dstYoff) * dstStride,
		      dstStride,
		      (pbox->x1 + dstXoff) * dstBpp,
		      dstBpp,
    
		      width * dstBpp,
		      height,
    
		      pPriv->and, pPriv->xor,
		      pPriv->bgand, pPriv->bgxor);
	    free(tmp);

	    fbFinishAccess (pDstDrawable);
	    fbFinishAccess (pSrcDrawable);
	}
	pbox++;
    }
}

RegionPtr
fbCopyArea (DrawablePtr	pSrcDrawable,
	    DrawablePtr	pDstDrawable,
	    GCPtr	pGC,
	    int		xIn, 
	    int		yIn,
	    int		widthSrc, 
	    int		heightSrc,
	    int		xOut, 
	    int		yOut)
{
    miCopyProc	copy;

#ifdef FB_24_32BIT
    if (pSrcDrawable->bitsPerPixel != pDstDrawable->bitsPerPixel)
	copy = fb24_32CopyMtoN;
    else
#endif
	copy = fbCopyNtoN;
    return miDoCopy (pSrcDrawable, pDstDrawable, pGC, xIn, yIn,
		     widthSrc, heightSrc, xOut, yOut, copy, 0, 0);
}

RegionPtr
fbCopyPlane (DrawablePtr    pSrcDrawable,
	     DrawablePtr    pDstDrawable,
	     GCPtr	    pGC,
	     int	    xIn, 
	     int	    yIn,
	     int	    widthSrc, 
	     int	    heightSrc,
	     int	    xOut, 
	     int	    yOut,
	     unsigned long  bitplane)
{
    if (pSrcDrawable->bitsPerPixel > 1)
	return miDoCopy (pSrcDrawable, pDstDrawable, pGC,
			 xIn, yIn, widthSrc, heightSrc,
			 xOut, yOut, fbCopyNto1, (Pixel) bitplane, 0);
    else if (bitplane & 1)
	return miDoCopy (pSrcDrawable, pDstDrawable, pGC, xIn, yIn,
			 widthSrc, heightSrc, xOut, yOut, fbCopy1toN,
			 (Pixel) bitplane, 0);
    else
	return miHandleExposures(pSrcDrawable, pDstDrawable, pGC,
				 xIn, yIn,
				 widthSrc,
				 heightSrc,
				 xOut, yOut, bitplane);
}