/* $XConsortium: arith.c,v 1.6 94/04/17 20:39:03 rws Exp $ */

/**** module arith.c ****/
/******************************************************************************

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*****************************************************************************
  
	arith.c -- arithmetic flo element tests 

	Syd Logan -- AGE Logic, Inc.
  
*****************************************************************************/
#include "xieperf.h"
#include <stdio.h>

static XiePhotomap XIEPhotomap1;
static XiePhotomap XIEPhotomap2;
static XieRoi XIERoi;
static XieLut XIELut;
static XiePhotomap ControlPlane;

static XIEimage	*image1, *image2;
static int flo_notify;
static XiePhotoElement *flograph;
static XiePhotoflo flo;
static int flo_elements;
static int monoflag;

static XieClipScaleParam *parms;

int 
InitArithmetic(xp, p, reps)
    XParms  xp;
    Parms   p;
    int     reps;
{
	XieProcessDomain domain;
	XieArithmeticOp	op;
	XieConstant	constant;
	unsigned int	bandMask;
	Bool		constrain;
	int		useDomain;
	int		idx;
	int		src1, src2;
	XieRectangle	rect;
        XieConstrainTechnique constrainTech;
        XieLTriplet levels;
        XieConstant in_low,in_high;
        XieLTriplet out_low,out_high;
	int	cclass;

#if     defined(__cplusplus) || defined(c_plusplus)
        cclass = xp->vinfo.c_class;
#else
        cclass = xp->vinfo.class;
#endif

	monoflag = 0;
	useDomain = ( ( ArithmeticParms * )p->ts )->useDomain;
	op = ( ( ArithmeticParms * )p->ts )->op;
	constant[ 0 ] = ( ( ArithmeticParms * )p->ts )->constant[ 0 ];
	constant[ 1 ] = ( ( ArithmeticParms * )p->ts )->constant[ 1 ];
	constant[ 2 ] = ( ( ArithmeticParms * )p->ts )->constant[ 2 ];
	bandMask = ( ( ArithmeticParms * )p->ts )->bandMask;
	constrain = ( ( ArithmeticParms * )p->ts )->constrain;
	constrainTech = ( ( ArithmeticParms * )p->ts )->constrainTech;
        in_low[ 0 ] = ( ( ArithmeticParms * )p->ts )->inLow;
	in_low[ 1 ] = 0;
	in_low[ 2 ] = 0;
        in_high[ 0 ] = ( ( ArithmeticParms * )p->ts )->inHigh;
	in_high[ 1 ] = 0;
	in_high[ 2 ] = 0;

	XIELut = ( XieLut ) NULL;
	XIERoi = ( XieRoi ) NULL;
	XIEPhotomap1 = ( XiePhotomap ) NULL;
	XIEPhotomap2 = ( XiePhotomap ) NULL;
	ControlPlane = ( XiePhotomap ) NULL;
	flo = ( XiePhotoflo ) NULL;
	flograph = ( XiePhotoElement * ) NULL;
        parms = ( XieClipScaleParam * ) NULL;

	switch( op )
	{
		case xieValAdd:
		case xieValSub:
		case xieValSubRev:
		case xieValMul:
		case xieValDiv:
		case xieValDivRev:
		case xieValMin:
		case xieValMax:
		case xieValGamma:
			break;
		default:
			fprintf( stderr, "Invalid arithmetic op\n" );
			reps = 0;
			break;
	}

	if ( !reps )
		return( reps );	

	image1 = p->finfo.image1;

	/* we must have image1. image2, however, is optional */
 
	if ( !image1 )
		return ( 0 );
	image2 = p->finfo.image2;

	if ( image2 )
		flo_elements = 4;
	else
		flo_elements = 3;
	if ( useDomain == DomainROI || useDomain == DomainCtlPlane )
		flo_elements++;
	if ( constrain == True )
		if ( image2 )
			flo_elements += 3;
		else
			flo_elements += 2;
	if ( xp->screenDepth != image1->depth[ 0 ] && constrain == False )
	{
		monoflag = 1;
		flo_elements+=2;
                if ( ( XIELut = CreatePointLut( xp, p,
			1 << image1->depth[ 0 ], 
			1 << xp->screenDepth, False ) )
			== ( XieLut ) NULL )
		{
			reps = 0;
		}
	}
	else if ( IsTrueColorOrDirectColor( cclass ) && constrain == True )
	{
		monoflag = 1;
		flo_elements+=2;
                if ( ( XIELut = CreatePointLut( xp, p,
			xp->vinfo.colormap_size, 
			1 << xp->screenDepth, False ) )
			== ( XieLut ) NULL )
		{
			reps = 0;
		}
	}

	if ( reps )
	{
		flograph = XieAllocatePhotofloGraph( flo_elements );	
		if ( flograph == ( XiePhotoElement * ) NULL )
		{
			fprintf( stderr, "XieAllocatePhotofloGraph failed\n" );
			reps = 0;
		}
		else if ( ( XIEPhotomap1 = GetXIEPhotomap( xp, p, 1 ) ) == 
			( XiePhotomap ) NULL )
		{
			reps = 0;
		}
		else if ( image2 ) 
		{
			if ( ( XIEPhotomap2 = GetXIEPhotomap( xp, p, 2 ) ) == 
				( XiePhotomap ) NULL )
			{
				reps = 0;
			}
		}

		if ( useDomain == DomainROI )
		{
			rect.x = ( ( ArithmeticParms * )p->ts )->x;
			rect.y = ( ( ArithmeticParms * )p->ts )->y;
			rect.width = ( ( ArithmeticParms * )p->ts )->width;
			rect.height = ( ( ArithmeticParms * )p->ts )->height;

			if ( ( XIERoi = GetXIERoi( xp, p, &rect, 1 ) ) == 
				( XieRoi ) NULL )
			{
				reps = 0;
			}
		}
                else if ( useDomain == DomainCtlPlane )
                {
                        ControlPlane = GetControlPlane( xp, 13 );
                        if ( ControlPlane == ( XiePhotomap ) NULL )
                                reps = 0;
                }
	}

	if ( reps )
	{
		idx = 0;

		domain.offset_x = 0;
		domain.offset_y = 0;


		if ( useDomain == DomainROI )
		{
	        	XieFloImportROI(&flograph[idx], XIERoi);
			idx++;
			domain.phototag = idx;
		}
                else if ( useDomain == DomainCtlPlane )
                {
                        XieFloImportPhotomap(&flograph[idx], ControlPlane, False
);
                        idx++;
                        domain.phototag = idx;
                }
		else
		{
			domain.phototag = 0;
		}

		XieFloImportPhotomap(&flograph[idx], XIEPhotomap1, False );
		idx++;
		src1 = idx;

                if ( constrain == True )
                {
                        XieFloUnconstrain( &flograph[idx], idx );
                        idx++;
			src1 = idx;
                }

		if ( image2 )
		{
			XieFloImportPhotomap(&flograph[idx], XIEPhotomap2, 
				False );
			idx++;
			src2 = idx;

			if ( constrain == True )
			{
				XieFloUnconstrain( &flograph[idx], idx );
				idx++;
				src2 = idx;
			}
		}
		else
			src2 = 0;

		XieFloArithmetic(&flograph[idx], 
			src1,
			src2,
			&domain,
			constant,
			op,
			bandMask
		);
		idx++;

                if ( constrain == True )
                {
                        levels[ 0 ] = xp->vinfo.colormap_size;
                        levels[ 1 ] = 0;
                        levels[ 2 ] = 0;

                        if ( constrainTech == xieValConstrainHardClip )
                                parms = ( XieClipScaleParam * ) NULL;
                        else if ( constrainTech == xieValConstrainClipScale )
                        {
                                out_low[ 0 ] = 0;
                                out_low[ 1 ] = 0;
                                out_low[ 2 ] = 0;
                                out_high[ 0 ] = xp->vinfo.colormap_size - 1;
                                out_high[ 1 ] = xp->vinfo.colormap_size - 1;
                                out_high[ 2 ] = xp->vinfo.colormap_size - 1;

                                parms = ( XieClipScaleParam * )
                                        XieTecClipScale( in_low,
                                        in_high, out_low, out_high);
                                if ( parms == ( XieClipScaleParam * ) NULL )
                                {
                                        fprintf( stderr, "Trouble loading clipscale technique parameters\n" );
                                        reps = 0;
                                }
                        }
                        else
                        {
                                fprintf( stderr,
                                        "Invalid technique for constrain\n" );
                                reps = 0;
                        }
                        if ( reps )
                        {
                                XieFloConstrain( &flograph[idx],
                                        idx,
                                        levels,
                                        constrainTech,
                                        ( char * ) parms
                                );
                                idx++;
                        }
                }
	
		if ( reps && monoflag )
		{
			XieFloImportLUT(&flograph[idx], XIELut );
			idx++;

			domain.phototag = 0;
			domain.offset_x = 0;
			domain.offset_y = 0;
			XieFloPoint(&flograph[idx],
				idx-1,
				&domain,
				idx,
				0x7
			);
			idx++;
		}	
		if ( reps )
		{	
			XieFloExportDrawable(&flograph[idx],
				idx,     	/* source phototag number */
				xp->w,
				xp->fggc,
				0,       /* x offset in window */
				0        /* y offset in window */
			);
			idx++;
		
			flo = XieCreatePhotoflo( xp->d, flograph, flo_elements );
			flo_notify = True;
		}
	}
	if ( !reps )
		FreeArithStuff( xp, p );
		
	return( reps );
}

void 
DoArithmetic(xp, p, reps)
XParms  xp;
Parms   p;
int     reps;
{
    	int     i;

    	for (i = 0; i != reps; i++) {
		XieExecutePhotoflo( xp->d, flo, flo_notify );
		XSync( xp->d, 0 );
		WaitForXIEEvent( xp, xieEvnNoPhotofloDone, flo, 0, False );	
    	}
}

void 
EndArithmetic(xp, p)
XParms  xp;
Parms   p;
{
	FreeArithStuff( xp, p );
}

int
FreeArithStuff( xp, p )
XParms	xp;
Parms	p;
{
        if ( parms )
        {
                XFree( parms );
                parms = ( XieClipScaleParam * ) NULL;
	}

	if ( XIERoi )
	{
                XieDestroyROI( xp->d, XIERoi );
                XIERoi = ( XieRoi ) NULL;
	}

	if ( XIELut )
	{
                XieDestroyLUT( xp->d, XIELut );
                XIELut = ( XieLut ) NULL;
	}

	if ( XIEPhotomap1 && IsPhotomapInCache( XIEPhotomap1 ) == False )
	{
                XieDestroyPhotomap( xp->d, XIEPhotomap1 );
                XIEPhotomap1 = ( XiePhotomap ) NULL;
	}

	if ( XIEPhotomap2 && IsPhotomapInCache( XIEPhotomap2 ) == False )
	{
                XieDestroyPhotomap( xp->d, XIEPhotomap2 );
                XIEPhotomap2 = ( XiePhotomap ) NULL;
	}

	if ( ControlPlane )
	{
                XieDestroyPhotomap( xp->d, ControlPlane );
                ControlPlane = ( XiePhotomap ) NULL;
	}

	if ( flo )
	{
		XieDestroyPhotoflo( xp->d, flo );
		flo = ( XiePhotoflo ) NULL;
	}
	if ( flograph )
	{
		XieFreePhotofloGraph(flograph,flo_elements);	
                flograph = ( XiePhotoElement * ) NULL;
	}
}
