/* $XConsortium: iclut.c /main/5 1995/12/02 16:45:18 dpw $ */
/* $XFree86: xc/programs/Xserver/XIE/dixie/import/iclut.c,v 3.0 1996/03/29 22:10:23 dawes Exp $ */
/* AGE Logic - Oct 15 1995 - Larry Hare */
/**** module iclut.c ****/
/******************************************************************************

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*****************************************************************************
  
	iclut.c -- DIXIE routines for managing the ImportClientLUT element
  
	Dean Verheiden 	-- AGE Logic, Inc. April 1993
	Ben Fahy 	-- AGE Logic, Inc. May   1993
  
*****************************************************************************/

#define _XIEC_ICLUT

/*
 *  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 <error.h>
#include <macro.h>
#include <element.h>
#include <lut.h>


/*
 *  routines referenced by other modules
 */
peDefPtr	MakeICLUT();

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

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

/*------------------------------------------------------------------------
--------------- routine: make an import client lut element -------------
------------------------------------------------------------------------*/
peDefPtr MakeICLUT(flo,tag,pe)
     floDefPtr      flo;
     xieTypPhototag tag;
     xieFlo        *pe;
{
  peDefPtr ped;
  ELEMENT(xieFloImportClientLUT);
  ELEMENT_SIZE_MATCH(xieFloImportClientLUT);
  
  if(!(ped = MakePEDef(1, (CARD32)stuff->elemLength<<2, 0)))
    FloAllocError(flo,tag,xieElemImportClientLUT,return(NULL));

  ped->diVec	     = &iCLUTVec;
  ped->phototag      = tag;
  ped->flags.import  = TRUE;
  ped->flags.putData = TRUE;
  raw = (xieFloImportClientLUT *)ped->elemRaw;
  /*
   * copy the client element parameters (swap if necessary)
   */
  if( flo->reqClient->swapped ) {
    raw->elemType   = stuff->elemType;
    raw->elemLength = stuff->elemLength;
    raw->class  = stuff->class;
    raw->bandOrder = stuff->bandOrder;
    cpswapl(stuff->length0, raw->length0);
    cpswapl(stuff->length1, raw->length1);
    cpswapl(stuff->length2, raw->length2);
    cpswapl(stuff->levels0, raw->levels0);
    cpswapl(stuff->levels1, raw->levels1);
    cpswapl(stuff->levels2, raw->levels2);
  }    
  else
    memcpy((char *)raw, (char *)stuff, sizeof(xieFloImportClientLUT));

  return(ped);
}                               /* end MakeICLUT */


/*------------------------------------------------------------------------
---------------- routine: prepare for analysis and execution -------------
------------------------------------------------------------------------*/
static Bool PrepICLUT(flo,ped)
     floDefPtr  flo;
     peDefPtr   ped;
{
  xieFloImportClientLUT *raw = (xieFloImportClientLUT *)ped->elemRaw;
  inFloPtr inflo = &ped->inFloLst[IMPORT];
  int b;

  /*
   * check for data-class, length, and levels errors, and stash attributes
   * since this is STREAM data, we only have to record the class and band 
   * numbers in the inflos.
   */
  if(raw->bandOrder != xieValLSFirst && raw->bandOrder != xieValMSFirst)
    ValueError(flo,ped,raw->bandOrder, return(FALSE));

  switch(raw->class) {
  case xieValSingleBand :

    if(!raw->length0)
      ValueError(flo,ped,0, return(FALSE));
    if(raw->levels0 < 2 || raw->levels0 > MAX_LEVELS(1))
      MatchError(flo,ped, return(FALSE));
    inflo->bands = 1;
    break;
#if XIE_FULL
  case xieValTripleBand :
    if(!raw->length0 || !raw->length1 || !raw->length2)
      ValueError(flo,ped,0, return(FALSE));
    if(raw->levels0 < 2 || raw->levels0 > MAX_LEVELS(3) ||
       raw->levels1 < 2 || raw->levels1 > MAX_LEVELS(3) ||
       raw->levels2 < 2 || raw->levels2 > MAX_LEVELS(3))
      MatchError(flo,ped, return(FALSE));

    inflo->bands	  = 3;
    inflo->format[1].band = 1;
    inflo->format[2].band = 2;
    ped->outFlo.format[1] = inflo->format[1];
    ped->outFlo.format[2] = inflo->format[2];
    ped->outFlo.format[1].levels = raw->levels1;
    ped->outFlo.format[2].levels = raw->levels2;
    ped->outFlo.format[1].height = raw->length1;
    ped->outFlo.format[2].height = raw->length2;
    break;
#endif
  default :
    ValueError(flo,ped,raw->class, return(FALSE));
  }

  inflo->format[0].band = 0;
  ped->outFlo.format[0] = inflo->format[0];
  ped->outFlo.format[0].levels =  raw->levels0;
  ped->outFlo.format[0].height =  raw->length0;

  for (b=0; b < inflo->bands; b++) {
	formatPtr fmt = &(ped->outFlo.format[b]);

  	inflo->format[b].class  = STREAM;
	ped->swapUnits[b] = LutPitch(fmt->levels);

	fmt->class  = LUT_ARRAY;
	fmt->interleaved = FALSE;
	fmt->width  = raw->bandOrder; /* see miclut.c, mppoint crazypixel */
	fmt->depth  = 8;
	fmt->stride = 8;
	fmt->pitch  = 8 * fmt->height;
  }

  ped->outFlo.bands = inflo->bands;

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

/* end module iclut.c */
