#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif

#include <string.h>

#include "misc.h"
#include "xf86.h"
#include "xf86_OSproc.h"

#include <X11/X.h>
#include "scrnintstr.h"
#include "xf86str.h"
#include "xaa.h"
#include "xaalocal.h"
#include "migc.h"
#include "gcstruct.h"
#include "pixmapstr.h"
#include "xaawrap.h"

static void XAAValidateGC(GCPtr pGC, unsigned long changes, DrawablePtr pDraw);
static void XAAChangeGC(GCPtr pGC, unsigned long mask);
static void XAACopyGC(GCPtr pGCSrc, unsigned long mask, GCPtr pGCDst);
static void XAADestroyGC(GCPtr pGC);
static void XAAChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects);
static void XAADestroyClip(GCPtr pGC);
static void XAACopyClip(GCPtr pgcDst, GCPtr pgcSrc);

GCFuncs XAAGCFuncs = {
    XAAValidateGC, XAAChangeGC, XAACopyGC, XAADestroyGC,
    XAAChangeClip, XAADestroyClip, XAACopyClip
};

extern GCOps XAAPixmapOps;

Bool
XAACreateGC(GCPtr pGC)
{
    ScreenPtr    pScreen = pGC->pScreen;
    XAAGCPtr     pGCPriv = (XAAGCPtr)(pGC->devPrivates[XAAGetGCIndex()].ptr);
    Bool         ret;

    XAA_SCREEN_PROLOGUE(pScreen,CreateGC);

    if((ret = (*pScreen->CreateGC)(pGC))) {	
	pGCPriv->wrapOps = NULL;
	pGCPriv->wrapFuncs = pGC->funcs;
	pGCPriv->XAAOps = &XAAFallbackOps;
	pGCPriv->flags = 0;
	pGCPriv->DashLength = 0;
	pGCPriv->DashPattern = NULL;
	pGCPriv->changes = 0;
	/* initialize any other private fields here */
	pGC->funcs = &XAAGCFuncs;
    }
 
    XAA_SCREEN_EPILOGUE(pScreen,CreateGC,XAACreateGC);

    return ret;
}


static void
XAAValidateGC(
   GCPtr         pGC,
   unsigned long changes,
   DrawablePtr   pDraw 
){
    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
    XAA_GC_FUNC_PROLOGUE(pGC);

    (*pGC->funcs->ValidateGC)(pGC, changes, pDraw);

    if((changes & GCPlaneMask) &&
       ((pGC->planemask & infoRec->FullPlanemasks[pGC->depth - 1]) == 
	 infoRec->FullPlanemasks[pGC->depth - 1]))
    {	
	pGC->planemask = ~0;
    }

    if(pGC->depth != 32) {
	if(pGC->bgPixel == -1) /* -1 is reserved for transparency */
	    pGC->bgPixel = 0x7fffffff; 
	if(pGC->fgPixel == -1) /* -1 is reserved for transparency */
	    pGC->fgPixel = 0x7fffffff; 
    }

    if((pDraw->type == DRAWABLE_PIXMAP) && !IS_OFFSCREEN_PIXMAP(pDraw)){
	pGCPriv->flags = OPS_ARE_PIXMAP;
        pGCPriv->changes |= changes;

	/* make sure we're not using videomemory pixmaps to render
	   onto system memory drawables */

	if((pGC->fillStyle == FillTiled) && 
	    IS_OFFSCREEN_PIXMAP(pGC->tile.pixmap) &&
	    !OFFSCREEN_PIXMAP_LOCKED(pGC->tile.pixmap)) {

	    XAAPixmapPtr pPriv = XAA_GET_PIXMAP_PRIVATE(pGC->tile.pixmap);
	    FBAreaPtr area = pPriv->offscreenArea;

	    XAARemoveAreaCallback(area); /* clobbers pPriv->offscreenArea */
	    xf86FreeOffscreenArea(area);
	}
    } 
    else if(!infoRec->pScrn->vtSema && (pDraw->type == DRAWABLE_WINDOW)) {
	pGCPriv->flags = 0;
        pGCPriv->changes |= changes;
    }
    else {
	if(!(pGCPriv->flags & OPS_ARE_ACCEL)) {	
	    changes |= pGCPriv->changes;
	    pGCPriv->changes = 0;
	}
	pGCPriv->flags = OPS_ARE_ACCEL;

#if 1
	/* Ugh.  If we can't use the blitter on offscreen pixmaps used
	   as tiles, then we need to move them out as cfb can't handle
	   tiles with non-zero origins */

	if((pGC->fillStyle == FillTiled) && 
	    IS_OFFSCREEN_PIXMAP(pGC->tile.pixmap) &&
	    (DO_PIXMAP_COPY != (*infoRec->TiledFillChooser)(pGC))) {

	    XAAPixmapPtr pPriv = XAA_GET_PIXMAP_PRIVATE(pGC->tile.pixmap);
	    FBAreaPtr area = pPriv->offscreenArea;

	    XAARemoveAreaCallback(area); /* clobbers pPriv->offscreenArea */
	    xf86FreeOffscreenArea(area);
	}
#endif
    }

    XAA_GC_FUNC_EPILOGUE(pGC);

    if(!(pGCPriv->flags & OPS_ARE_ACCEL)) return;

    if((changes & GCTile) && !pGC->tileIsPixel && pGC->tile.pixmap){
	XAAPixmapPtr pixPriv = XAA_GET_PIXMAP_PRIVATE(pGC->tile.pixmap);
		
	if(pixPriv->flags & DIRTY) {
	    pixPriv->flags &= ~(DIRTY | REDUCIBILITY_MASK);
	    pGC->tile.pixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
	}
    }
    if((changes & GCStipple) && pGC->stipple){
	XAAPixmapPtr pixPriv = XAA_GET_PIXMAP_PRIVATE(pGC->stipple);
		
	if(pixPriv->flags & DIRTY) {
	    pixPriv->flags &= ~(DIRTY | REDUCIBILITY_MASK);
	    pGC->stipple->drawable.serialNumber = NEXT_SERIAL_NUMBER;
	}
    }

    /* If our Ops are still the default ones we need to allocate new ones */
    if(pGC->ops == &XAAFallbackOps) {
	if(!(pGCPriv->XAAOps = xalloc(sizeof(GCOps)))) {	
	    pGCPriv->XAAOps = &XAAFallbackOps;
	    return;
	}
	/* make a modifiable copy of the default ops */
	memcpy(pGCPriv->XAAOps, &XAAFallbackOps, sizeof(GCOps));
	pGC->ops = pGCPriv->XAAOps;
	changes = ~0;
    }

    if(!changes) return;

    if((changes & GCDashList) && infoRec->ComputeDash)
	infoRec->ComputeDash(pGC);

    if(changes & infoRec->FillSpansMask)
	(*infoRec->ValidateFillSpans)(pGC, changes, pDraw); 	

    if(changes & infoRec->SetSpansMask)
	(*infoRec->ValidateSetSpans)(pGC, changes, pDraw); 	

    if(changes & infoRec->PutImageMask)
	(*infoRec->ValidatePutImage)(pGC, changes, pDraw); 	

    if(changes & infoRec->CopyAreaMask)
	(*infoRec->ValidateCopyArea)(pGC, changes, pDraw); 	

    if(changes & infoRec->CopyPlaneMask)
	(*infoRec->ValidateCopyPlane)(pGC, changes, pDraw); 	

    if(changes & infoRec->PolyPointMask)
	(*infoRec->ValidatePolyPoint)(pGC, changes, pDraw); 	

    if(changes & infoRec->PolylinesMask)
	(*infoRec->ValidatePolylines)(pGC, changes, pDraw); 	

    if(changes & infoRec->PolySegmentMask)
	(*infoRec->ValidatePolySegment)(pGC, changes, pDraw); 	

    if(changes & infoRec->PolyRectangleMask)
	(*infoRec->ValidatePolyRectangle)(pGC, changes, pDraw); 	

    if(changes & infoRec->PolyArcMask)
	(*infoRec->ValidatePolyArc)(pGC, changes, pDraw); 	

    if(changes & infoRec->FillPolygonMask)
	(*infoRec->ValidateFillPolygon)(pGC, changes, pDraw); 	

    if(changes & infoRec->PolyFillRectMask)
	(*infoRec->ValidatePolyFillRect)(pGC, changes, pDraw); 	
 
    if(changes & infoRec->PolyFillArcMask)
	(*infoRec->ValidatePolyFillArc)(pGC, changes, pDraw); 	

    if(changes & infoRec->PolyGlyphBltMask)
	(*infoRec->ValidatePolyGlyphBlt)(pGC, changes, pDraw);

    if(changes & infoRec->ImageGlyphBltMask)
	(*infoRec->ValidateImageGlyphBlt)(pGC, changes, pDraw);

    if(changes & infoRec->PolyText8Mask)
	(*infoRec->ValidatePolyText8)(pGC, changes, pDraw);
    
    if(changes & infoRec->PolyText16Mask)
	(*infoRec->ValidatePolyText16)(pGC, changes, pDraw);

    if(changes & infoRec->ImageText8Mask)
	(*infoRec->ValidateImageText8)(pGC, changes, pDraw);
    
    if(changes & infoRec->ImageText16Mask)
	(*infoRec->ValidateImageText16)(pGC, changes, pDraw);
 
    if(changes & infoRec->PushPixelsMask) 
	(*infoRec->ValidatePushPixels)(pGC, changes, pDraw); 	
}


static void
XAADestroyGC(GCPtr pGC)
{
    XAA_GC_FUNC_PROLOGUE (pGC);
     
    if(pGCPriv->XAAOps != &XAAFallbackOps)
	xfree(pGCPriv->XAAOps);

    if(pGCPriv->DashPattern)
	xfree(pGCPriv->DashPattern);    

    (*pGC->funcs->DestroyGC)(pGC);
    XAA_GC_FUNC_EPILOGUE (pGC);
}

static void
XAAChangeGC (
    GCPtr	    pGC,
    unsigned long   mask
)
{
    XAA_GC_FUNC_PROLOGUE (pGC);
    (*pGC->funcs->ChangeGC) (pGC, mask);
    XAA_GC_FUNC_EPILOGUE (pGC);

   /* we have to assume that shared memory pixmaps are dirty 
      because we can't wrap all operations on them */

    if((mask & GCTile) && !pGC->tileIsPixel &&
	PIXMAP_IS_SHARED(pGC->tile.pixmap))
    {
	XAAPixmapPtr pPixPriv = XAA_GET_PIXMAP_PRIVATE(pGC->tile.pixmap);
	pPixPriv->flags |= DIRTY;
    }

    if((mask & GCStipple) && PIXMAP_IS_SHARED(pGC->stipple)){
	XAAPixmapPtr pPixPriv = XAA_GET_PIXMAP_PRIVATE(pGC->stipple);
	pPixPriv->flags |= DIRTY;
    }
}

static void
XAACopyGC (
    GCPtr	    pGCSrc, 
    unsigned long   mask,
    GCPtr	    pGCDst)
{
    XAA_GC_FUNC_PROLOGUE (pGCDst);
    (*pGCDst->funcs->CopyGC) (pGCSrc, mask, pGCDst);
    XAA_GC_FUNC_EPILOGUE (pGCDst);
}
static void
XAAChangeClip (
    GCPtr   pGC,
    int		type,
    pointer	pvalue,
    int		nrects )
{
    XAA_GC_FUNC_PROLOGUE (pGC);
    (*pGC->funcs->ChangeClip) (pGC, type, pvalue, nrects);
    XAA_GC_FUNC_EPILOGUE (pGC);
}

static void
XAACopyClip(GCPtr pgcDst, GCPtr pgcSrc)
{
    XAA_GC_FUNC_PROLOGUE (pgcDst);
    (* pgcDst->funcs->CopyClip)(pgcDst, pgcSrc);
    XAA_GC_FUNC_EPILOGUE (pgcDst);
}

static void
XAADestroyClip(GCPtr pGC)
{
    XAA_GC_FUNC_PROLOGUE (pGC);
    (* pGC->funcs->DestroyClip)(pGC);
    XAA_GC_FUNC_EPILOGUE (pGC);
}
 
/**** Pixmap Wrappers ****/



static void
XAAFillSpansPixmap(
    DrawablePtr pDraw,
    GC		*pGC,
    int		nInit,	
    DDXPointPtr pptInit,	
    int *pwidthInit,		
    int fSorted 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);    
    (*pGC->ops->FillSpans)(pDraw, pGC, nInit, pptInit, pwidthInit, fSorted);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}

static void
XAASetSpansPixmap(
    DrawablePtr		pDraw,
    GCPtr		pGC,
    char		*pcharsrc,
    register DDXPointPtr ppt,
    int			*pwidth,
    int			nspans,
    int			fSorted 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->SetSpans)(pDraw, pGC, pcharsrc, ppt, pwidth, nspans, fSorted);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}

static void
XAAPutImagePixmap(
    DrawablePtr pDraw,
    GCPtr	pGC,
    int		depth, 
    int x, int y, int w, int h,
    int		leftPad,
    int		format,
    char 	*pImage 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->PutImage)(pDraw, pGC, depth, x, y, w, h, 
		leftPad, format, pImage);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}

static RegionPtr
XAACopyAreaPixmap(
    DrawablePtr pSrc,
    DrawablePtr pDst,
    GC *pGC,
    int srcx, int srcy,
    int width, int height,
    int dstx, int dsty 
){
    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
    RegionPtr ret;

    if(infoRec->pScrn->vtSema && 
	((pSrc->type == DRAWABLE_WINDOW) || IS_OFFSCREEN_PIXMAP(pSrc))) 
    {
	if(infoRec->ReadPixmap && (pGC->alu == GXcopy) &&
           (pSrc->bitsPerPixel == pDst->bitsPerPixel) &&
          ((pGC->planemask & infoRec->FullPlanemasks[pSrc->depth - 1])
              == infoRec->FullPlanemasks[pSrc->depth - 1]))
        {
            XAAPixmapPtr pixPriv = XAA_GET_PIXMAP_PRIVATE((PixmapPtr)(pDst));
	    pixPriv->flags |= DIRTY; 

            return (XAABitBlt( pSrc, pDst, pGC,
                srcx, srcy, width, height, dstx, dsty,
                XAADoImageRead, 0L));
        } else
	if(infoRec->NeedToSync) {
	   (*infoRec->Sync)(infoRec->pScrn);
	    infoRec->NeedToSync = FALSE;
	}
    }    

    {
	XAA_PIXMAP_OP_PROLOGUE(pGC, pDst);
	ret = (*pGC->ops->CopyArea)(pSrc, pDst,
            pGC, srcx, srcy, width, height, dstx, dsty);
	XAA_PIXMAP_OP_EPILOGUE(pGC);
    }
    return ret;
}

static RegionPtr
XAACopyPlanePixmap(
    DrawablePtr	pSrc,
    DrawablePtr	pDst,
    GCPtr pGC,
    int	srcx, int srcy,
    int	width, int height,
    int	dstx, int dsty,
    unsigned long bitPlane 
){
    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
    RegionPtr ret;

    XAA_PIXMAP_OP_PROLOGUE(pGC, pDst);

    if(infoRec->pScrn->vtSema && 
	((pSrc->type == DRAWABLE_WINDOW) || IS_OFFSCREEN_PIXMAP(pSrc))){
	if(infoRec->NeedToSync) {
	   (*infoRec->Sync)(infoRec->pScrn);
	    infoRec->NeedToSync = FALSE;
	}
    }    

    ret = (*pGC->ops->CopyPlane)(pSrc, pDst,
	       pGC, srcx, srcy, width, height, dstx, dsty, bitPlane);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
    return ret;
}

static void
XAAPolyPointPixmap(
    DrawablePtr pDraw,
    GCPtr pGC,
    int mode,
    int npt,
    xPoint *pptInit 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->PolyPoint)(pDraw, pGC, mode, npt, pptInit);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}


static void
XAAPolylinesPixmap(
    DrawablePtr pDraw,
    GCPtr	pGC,
    int		mode,		
    int		npt,		
    DDXPointPtr pptInit 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->Polylines)(pDraw, pGC, mode, npt, pptInit);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}

static void 
XAAPolySegmentPixmap(
    DrawablePtr	pDraw,
    GCPtr	pGC,
    int		nseg,
    xSegment	*pSeg 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->PolySegment)(pDraw, pGC, nseg, pSeg);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}

static void
XAAPolyRectanglePixmap(
    DrawablePtr  pDraw,
    GCPtr        pGC,
    int	         nRectsInit,
    xRectangle  *pRectsInit 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->PolyRectangle)(pDraw, pGC, nRectsInit, pRectsInit);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}

static void
XAAPolyArcPixmap(
    DrawablePtr	pDraw,
    GCPtr	pGC,
    int		narcs,
    xArc	*parcs 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->PolyArc)(pDraw, pGC, narcs, parcs);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}

static void
XAAFillPolygonPixmap(
    DrawablePtr	pDraw,
    GCPtr	pGC,
    int		shape,
    int		mode,
    int		count,
    DDXPointPtr	ptsIn 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->FillPolygon)(pDraw, pGC, shape, mode, count, ptsIn);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}


static void 
XAAPolyFillRectPixmap(
    DrawablePtr	pDraw,
    GCPtr	pGC,
    int		nrectFill, 
    xRectangle	*prectInit 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->PolyFillRect)(pDraw, pGC, nrectFill, prectInit);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}


static void
XAAPolyFillArcPixmap(
    DrawablePtr	pDraw,
    GCPtr	pGC,
    int		narcs,
    xArc	*parcs 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->PolyFillArc)(pDraw, pGC, narcs, parcs);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}

static int
XAAPolyText8Pixmap(
    DrawablePtr pDraw,
    GCPtr	pGC,
    int		x, 
    int 	y,
    int 	count,
    char	*chars 
){
    int ret;

    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    ret = (*pGC->ops->PolyText8)(pDraw, pGC, x, y, count, chars);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
    return ret;
}

static int
XAAPolyText16Pixmap(
    DrawablePtr pDraw,
    GCPtr	pGC,
    int		x,
    int		y,
    int 	count,
    unsigned short *chars 
){
    int ret;

    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    ret = (*pGC->ops->PolyText16)(pDraw, pGC, x, y, count, chars);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
    return ret;
}

static void
XAAImageText8Pixmap(
    DrawablePtr pDraw,
    GCPtr	pGC,
    int		x, 
    int		y,
    int 	count,
    char	*chars 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->ImageText8)(pDraw, pGC, x, y, count, chars);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}
static void
XAAImageText16Pixmap(
    DrawablePtr pDraw,
    GCPtr	pGC,
    int		x,
    int		y,
    int 	count,
    unsigned short *chars 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->ImageText16)(pDraw, pGC, x, y, count, chars);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}


static void
XAAImageGlyphBltPixmap(
    DrawablePtr pDraw,
    GCPtr pGC,
    int xInit, int yInit,
    unsigned int nglyph,
    CharInfoPtr *ppci,
    pointer pglyphBase 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->ImageGlyphBlt)(pDraw, pGC, xInit, yInit, nglyph, 
					ppci, pglyphBase);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}

static void
XAAPolyGlyphBltPixmap(
    DrawablePtr pDraw,
    GCPtr pGC,
    int xInit, int yInit,
    unsigned int nglyph,
    CharInfoPtr *ppci,
    pointer pglyphBase 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->PolyGlyphBlt)(pDraw, pGC, xInit, yInit, nglyph, 
				ppci, pglyphBase);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}

static void
XAAPushPixelsPixmap(
    GCPtr	pGC,
    PixmapPtr	pBitMap,
    DrawablePtr pDraw,
    int	dx, int dy, int xOrg, int yOrg 
){
    XAA_PIXMAP_OP_PROLOGUE(pGC, pDraw);
    (*pGC->ops->PushPixels)(pGC, pBitMap, pDraw, dx, dy, xOrg, yOrg);
    XAA_PIXMAP_OP_EPILOGUE(pGC);
}

GCOps XAAPixmapOps = {
    XAAFillSpansPixmap, XAASetSpansPixmap, 
    XAAPutImagePixmap, XAACopyAreaPixmap, 
    XAACopyPlanePixmap, XAAPolyPointPixmap, 
    XAAPolylinesPixmap, XAAPolySegmentPixmap, 
    XAAPolyRectanglePixmap, XAAPolyArcPixmap, 
    XAAFillPolygonPixmap, XAAPolyFillRectPixmap, 
    XAAPolyFillArcPixmap, XAAPolyText8Pixmap, 
    XAAPolyText16Pixmap, XAAImageText8Pixmap, 
    XAAImageText16Pixmap, XAAImageGlyphBltPixmap, 
    XAAPolyGlyphBltPixmap, XAAPushPixelsPixmap,
    {NULL}		/* devPrivate */
};