/* $XConsortium: ppaste.c,v 1.4 94/04/17 20:33:50 rws Exp $ */
/* $XFree86: xc/programs/Xserver/XIE/dixie/process/ppaste.c,v 3.0 1996/03/29 22:11:04 dawes Exp $ */
/**** module ppaste.c ****/
/******************************************************************************

Copyright (c) 1993, 1994  X Consortium

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				NOTICE
                              
This software is being provided by AGE Logic, Inc. under the
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*****************************************************************************
  
	ppaste.c -- DIXIE routines for managing the PasteUp element
  
	Dean Verheiden -- AGE Logic, Inc. June 1993
  
*****************************************************************************/

#define _XIEC_PPASTE

/*
 *  Include files
 */
#include <stdio.h>
  /*
   *  Core X Includes
   */
#define NEED_EVENTS
#include <X.h>
#include <Xproto.h>
  /*
   *  XIE Includes
   */
#include <XIE.h>
#include <XIEproto.h>
  /*
   *  more X server includes.
   */
#include <misc.h>
#include <dixstruct.h>
  /*
   *  Server XIE Includes
   */
#include <corex.h>
#include <macro.h>
#include <element.h>
#include <difloat.h>


/*
 *  routines referenced by other modules.
 */
peDefPtr	MakePasteUp();

/*
 *  routines internal to this module
 */
static Bool	PrepPasteUp();

/*
 * dixie entry points
 */
static diElemVecRec pPasteUpVec = {
    PrepPasteUp			/* prepare for analysis and execution	*/
    };


/*------------------------------------------------------------------------
----------------------- routine: make a arithmetic element --------------------
------------------------------------------------------------------------*/
peDefPtr MakePasteUp(flo,tag,pe)
     floDefPtr      flo;
     xieTypPhototag tag;
     xieFlo        *pe;
{
  int t;
  CARD16 inputs;
  peDefPtr ped;
  inFloPtr inFlo;
  pPasteUpDefPtr pvt;
  xieTypTile *rp;
  ELEMENT(xieFloPasteUp);
  ELEMENT_AT_LEAST_SIZE(xieFloPasteUp);
  ELEMENT_NEEDS_1_INPUT(numTiles);

  if ( flo->reqClient->swapped ) {
 	cpswaps(stuff->numTiles, inputs);
  } else
	inputs = stuff->numTiles;

  if(!(ped = MakePEDef((CARD32)inputs, (CARD32)stuff->elemLength<<2,
		       sizeof(pPasteUpDefRec))))
    FloAllocError(flo, tag, xieElemPasteUp, return(NULL));

  ped->diVec	     = &pPasteUpVec;
  ped->phototag      = tag;
  ped->flags.process = TRUE;
  raw = (xieFloPasteUp *)ped->elemRaw;
  rp  = (xieTypTile *) &(raw[1]);
  /*
   * copy the client element parameters (swap if necessary)
   */

  if( flo->reqClient->swapped ) {
    xieTypTile *sp = (xieTypTile *) &(stuff[1]);

    raw->elemType   = stuff->elemType;
    raw->elemLength = stuff->elemLength;
    /* We already did this one */
    raw->numTiles = inputs;
    cpswapl(stuff->width, raw->width);
    cpswapl(stuff->height, raw->height);
    cpswapl(stuff->constant0, raw->constant0);
    cpswapl(stuff->constant1, raw->constant1);
    cpswapl(stuff->constant2, raw->constant2);
    for (t = 0; t < inputs; t++) {
	cpswaps(sp[t].src,  rp[t].src);
	cpswapl(sp[t].dstX, rp[t].dstX);
	cpswapl(sp[t].dstY, rp[t].dstY);
    }
  }
  else
    memcpy((char *)raw, (char *)stuff, (CARD32)stuff->elemLength<<2);

  /*
   * convert constants
   */
  pvt = (pPasteUpDefPtr)ped->elemPvt;
  pvt->constant[0] = ConvertFromIEEE(raw->constant0);
  pvt->constant[1] = ConvertFromIEEE(raw->constant1);
  pvt->constant[2] = ConvertFromIEEE(raw->constant2);

  /*
   * assign phototags to inFlos
   */
  inFlo = ped->inFloLst;

  for (t = 0; t < inputs; t++) 
	inFlo[t].srcTag = rp[t].src;
  
  return(ped);
}                               /* end MakePasteUp */


/*------------------------------------------------------------------------
---------------- routine: prepare for analysis and execution -------------
------------------------------------------------------------------------*/
static Bool PrepPasteUp(flo,ped)
     floDefPtr  flo;
     peDefPtr   ped;
{
  xieFloPasteUp *raw = (xieFloPasteUp *)ped->elemRaw;
  inFloPtr  in  = &ped->inFloLst[0];
  outFloPtr src = &in->srcDef->outFlo;
  outFloPtr dst = &ped->outFlo;
  int b, t;

 /* Grab a copy of the input attributes and propagate them to our output.
  * Use the first input as a template, all attributes must match except for  
  * width (and pitch) and height.
  */

  dst->bands = in->bands = src->bands;

  if (raw->numTiles <= 0)
      	SourceError(flo,ped, return(FALSE));

  for(b = 0; b < dst->bands; b++) {
	CARD32 bits;
	if (IsntCanonic(src->format[b].class))
      		MatchError(flo,ped,return(FALSE));
	dst->format[b] = in->format[b] = src->format[b];
	dst->format[b].width = bits = raw->width;
	dst->format[b].height = raw->height;
	bits *= dst->format[b].stride;
	dst->format[b].pitch = bits + Align(bits,PITCH_MOD);
  }

  /* Compare the remaining tiles to ensure all attibutes that must match do */
  for (t = 1; t < raw->numTiles; t++) {
	in = &ped->inFloLst[t];
  	src = &in->srcDef->outFlo;

	if (src->bands != dst->bands) {
      		MatchError(flo,ped,return(FALSE));
	} else
		in->bands = src->bands;

  	for(b = 0; b < dst->bands; b++) {
		formatRec *df  = &(dst->format[b]);
		formatRec *srf = &(src->format[b]);
		if ( srf->class  != df->class  ||
		     srf->depth  != df->depth  ||
		     srf->levels != df->levels ||
		     srf->stride != df->stride) {
      			MatchError(flo,ped,return(FALSE));
		     }	
		in->format[b] = src->format[b];
	}
  }

  return( TRUE );
}                               /* end PrepPasteUp */

/* end module ppaste.c */
