xref: /xsrc/external/mit/xorg-server/dist/fb/fbimage.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 <string.h>

#include "fb.h"

void
fbPutImage (DrawablePtr	pDrawable,
	    GCPtr	pGC,
	    int		depth,
	    int		x,
	    int		y,
	    int		w,
	    int		h,
	    int		leftPad,
	    int		format,
	    char	*pImage)
{
    FbGCPrivPtr	    pPriv = fbGetGCPrivate(pGC);
    unsigned long   i;
    FbStride	    srcStride;
    FbStip	    *src = (FbStip *) pImage;

    x += pDrawable->x;
    y += pDrawable->y;

    switch (format)
    {
    case XYBitmap:
	srcStride = BitmapBytePad(w + leftPad) / sizeof (FbStip);
	fbPutXYImage (pDrawable,
		      fbGetCompositeClip(pGC),
		      pPriv->fg,
		      pPriv->bg,
		      pPriv->pm,
		      pGC->alu,
		      TRUE,
		      x, y, w, h,
		      src,
		      srcStride,
		      leftPad);
	break;
    case XYPixmap:
	srcStride = BitmapBytePad(w + leftPad) / sizeof (FbStip);
	for (i = (unsigned long)1 << (pDrawable->depth - 1); i; i >>= 1)
	{
	    if (i & pGC->planemask)
	    {
		fbPutXYImage (pDrawable,
			      fbGetCompositeClip(pGC),
			      FB_ALLONES,
			      0,
			      fbReplicatePixel (i, pDrawable->bitsPerPixel),
			      pGC->alu,
			      TRUE,
			      x, y, w, h,
			      src,
			      srcStride,
			      leftPad);
		src += srcStride * h;
	    }
	}
	break;
    case ZPixmap:
#ifdef FB_24_32BIT
	if (pDrawable->bitsPerPixel != BitsPerPixel(pDrawable->depth))
	{
	    srcStride = PixmapBytePad(w, pDrawable->depth);
	    fb24_32PutZImage (pDrawable,
			      fbGetCompositeClip(pGC),
			      pGC->alu,
			      (FbBits) pGC->planemask,
			      x, y, w, h,
			      (CARD8 *) pImage,
			      srcStride);
	}
	else
#endif
	{
	    srcStride = PixmapBytePad(w, pDrawable->depth) / sizeof (FbStip);
	    fbPutZImage (pDrawable,
			 fbGetCompositeClip(pGC),
			 pGC->alu,
			 pPriv->pm,
			 x, y, w, h,
			 src, srcStride);
	}
    }
}

void
fbPutZImage (DrawablePtr	pDrawable,
	     RegionPtr		pClip,
	     int		alu,
	     FbBits		pm,
	     int		x,
	     int		y,
	     int		width,
	     int		height,
	     FbStip		*src,
	     FbStride		srcStride)
{
    FbStip	*dst;
    FbStride	dstStride;
    int		dstBpp;
    int		dstXoff, dstYoff;
    int		nbox;
    BoxPtr	pbox;
    int		x1, y1, x2, y2;

    fbGetStipDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);

    for (nbox = REGION_NUM_RECTS (pClip),
	 pbox = REGION_RECTS(pClip);
	 nbox--;
	 pbox++)
    {
	x1 = x;
	y1 = y;
	x2 = x + width;
	y2 = y + height;
	if (x1 < pbox->x1)
	    x1 = pbox->x1;
	if (y1 < pbox->y1)
	    y1 = pbox->y1;
	if (x2 > pbox->x2)
	    x2 = pbox->x2;
	if (y2 > pbox->y2)
	    y2 = pbox->y2;
	if (x1 >= x2 || y1 >= y2)
	    continue;
	fbBltStip (src + (y1 - y) * srcStride,
		   srcStride,
		   (x1 - x) * dstBpp,

		   dst + (y1 + dstYoff) * dstStride,
		   dstStride,
		   (x1 + dstXoff) * dstBpp,

		   (x2 - x1) * dstBpp,
		   (y2 - y1),

		   alu,
		   pm,
		   dstBpp);
    }

    fbFinishAccess (pDrawable);
}

void
fbPutXYImage (DrawablePtr	pDrawable,
	      RegionPtr		pClip,
	      FbBits		fg,
	      FbBits		bg,
	      FbBits		pm,
	      int		alu,
	      Bool		opaque,

	      int		x,
	      int		y,
	      int		width,
	      int		height,

	      FbStip		*src,
	      FbStride		srcStride,
	      int		srcX)
{
    FbBits	*dst;
    FbStride	dstStride;
    int		dstBpp;
    int		dstXoff, dstYoff;
    int		nbox;
    BoxPtr	pbox;
    int		x1, y1, x2, y2;
    FbBits	fgand = 0, fgxor = 0, bgand = 0, bgxor = 0;

    fbGetDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);

    if (dstBpp == 1)
    {
	if (opaque)
	    alu = FbOpaqueStipple1Rop(alu,fg,bg);
	else
	    alu = FbStipple1Rop(alu,fg);
    }
    else
    {
	fgand = fbAnd(alu,fg,pm);
	fgxor = fbXor(alu,fg,pm);
	if (opaque)
	{
	    bgand = fbAnd(alu,bg,pm);
	    bgxor = fbXor(alu,bg,pm);
	}
	else
	{
	    bgand = fbAnd(GXnoop,(FbBits)0,FB_ALLONES);
	    bgxor = fbXor(GXnoop,(FbBits)0,FB_ALLONES);
	}
    }

    for (nbox = REGION_NUM_RECTS (pClip),
	 pbox = REGION_RECTS(pClip);
	 nbox--;
	 pbox++)
    {
	x1 = x;
	y1 = y;
	x2 = x + width;
	y2 = y + height;
	if (x1 < pbox->x1)
	    x1 = pbox->x1;
	if (y1 < pbox->y1)
	    y1 = pbox->y1;
	if (x2 > pbox->x2)
	    x2 = pbox->x2;
	if (y2 > pbox->y2)
	    y2 = pbox->y2;
	if (x1 >= x2 || y1 >= y2)
	    continue;
	if (dstBpp == 1)
	{
	    fbBltStip (src + (y1 - y) * srcStride,
		       srcStride,
		       (x1 - x) + srcX,

		       (FbStip *) (dst + (y1 + dstYoff) * dstStride),
		       FbBitsStrideToStipStride(dstStride),
		       (x1 + dstXoff) * dstBpp,

		       (x2 - x1) * dstBpp,
		       (y2 - y1),

		       alu,
		       pm,
		       dstBpp);
	}
	else
	{
	    fbBltOne (src + (y1 - y) * srcStride,
		      srcStride,
		      (x1 - x) + srcX,

		      dst + (y1 + dstYoff) * dstStride,
		      dstStride,
		      (x1 + dstXoff) * dstBpp,
		      dstBpp,

		      (x2 - x1) * dstBpp,
		      (y2 - y1),

		      fgand, fgxor, bgand, bgxor);
	}
    }

    fbFinishAccess (pDrawable);
}

void
fbGetImage (DrawablePtr	    pDrawable,
	    int		    x,
	    int		    y,
	    int		    w,
	    int		    h,
	    unsigned int    format,
	    unsigned long   planeMask,
	    char	    *d)
{
    FbBits	    *src;
    FbStride	    srcStride;
    int		    srcBpp;
    int		    srcXoff, srcYoff;
    FbStip	    *dst;
    FbStride	    dstStride;

    /*
     * XFree86 DDX empties the root borderClip when the VT is
     * switched away; this checks for that case
     */
    if (!fbDrawableEnabled(pDrawable))
	return;

#ifdef FB_24_32BIT
    if (format == ZPixmap &&
	pDrawable->bitsPerPixel != BitsPerPixel (pDrawable->depth))
    {
	fb24_32GetImage (pDrawable, x, y, w, h, format, planeMask, d);
	return;
    }
#endif

    fbGetDrawable (pDrawable, src, srcStride, srcBpp, srcXoff, srcYoff);

    x += pDrawable->x;
    y += pDrawable->y;

    dst = (FbStip *) d;
    if (format == ZPixmap || srcBpp == 1)
    {
	FbBits	pm;

	pm = fbReplicatePixel (planeMask, srcBpp);
	dstStride = PixmapBytePad(w, pDrawable->depth);
	if (pm != FB_ALLONES)
	    memset (d, 0, dstStride * h);
	dstStride /= sizeof (FbStip);
	fbBltStip ((FbStip *) (src + (y + srcYoff) * srcStride),
		   FbBitsStrideToStipStride(srcStride),
		   (x + srcXoff) * srcBpp,

		   dst,
		   dstStride,
		   0,

		   w * srcBpp, h,

		   GXcopy,
		   pm,
		   srcBpp);
    }
    else
    {
	dstStride = BitmapBytePad(w) / sizeof (FbStip);
	fbBltPlane (src + (y + srcYoff) * srcStride,
		    srcStride,
		    (x + srcXoff) * srcBpp,
		    srcBpp,

		    dst,
		    dstStride,
		    0,

		    w * srcBpp, h,

		    fbAndStip(GXcopy,FB_STIP_ALLONES,FB_STIP_ALLONES),
		    fbXorStip(GXcopy,FB_STIP_ALLONES,FB_STIP_ALLONES),
		    fbAndStip(GXcopy,0,FB_STIP_ALLONES),
		    fbXorStip(GXcopy,0,FB_STIP_ALLONES),
		    planeMask);
    }

    fbFinishAccess (pDrawable);
}