/* $XConsortium: pasteup.c,v 1.9 94/04/17 20:39:27 rws Exp $ */

/**** module pasteup.c ****/
/******************************************************************************

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				NOTICE
                              
This software is being provided by AGE Logic, Inc. under the
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*****************************************************************************
  
	pasteup.c -- pasteup flo element tests 

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

#define NTILES 16	/* has an integer square root and be a power of 2 */
#define	SPLIT  4 	/* square root of NTILES */

static int BuildPasteUpFlograph();

static XieLut XIELut;
static XiePhotomap XIEPhotomap;
static XiePhotomap segments[NTILES];		
static XieTile	tiles[NTILES];
static XiePhotoElement *flograph;
static XiePhotoflo	flo;
static int	flo_elements;
static XieConstant constant = { 0.0, 0.0, 0.0 };

static int monoflag = 0;

static int pasteUpIdx;

int InitPasteUp(xp, p, reps)
    XParms  xp;
    Parms   p;
    int     reps;
{	
	XIEimage *image;

        flograph = ( XiePhotoElement * ) NULL;
        flo = ( XiePhotoflo ) NULL;
	XIELut = ( XieLut ) NULL;
	XIEPhotomap = ( XiePhotomap ) NULL;
	InitSegments();

	image = p->finfo.image1;
        if ( !image )
		reps = 0;

	if ( reps )
	{
		monoflag = 0;
		if ( xp->screenDepth != image->depth[ 0 ] )
		{
			monoflag = 1;
			if ( ( XIELut = CreatePointLut( xp, p,
				1 << image->depth[0], 
				1 << xp->screenDepth, False ) )
				== ( XieLut ) NULL )
			{
				reps = 0;
			}
		}
	}
	if ( reps )
	{
		if ( ( XIEPhotomap = GetXIEPhotomap( xp, p, 1 ) ) == 
			( XiePhotomap ) NULL )
		{
			reps = 0;
		}

		else if ( !SegmentPhotomap( xp, p, XIEPhotomap, 
			segments, NTILES, SPLIT, image->width[ 0 ], 
			image->height[ 0 ] ) )
		{
			reps = 0;
		}

		else if ( !BuildPasteUpFlograph( xp, p, 
			&flograph, segments, NTILES, SPLIT, image->width[ 0 ], 
			image->height[ 0 ] ) )
		{
			reps = 0;
		}
	}
	if ( !reps )
		FreePasteUpStuff( xp, p );
        return( reps );
}

/* cut a photoflo into "size" little pieces. Assumption is that the values
   width and height are each congruent to 0 mod size. Caller allocates segvec */

int
InitSegments()
{
	int	i;

	for ( i = 0; i < NTILES; i++ )
	{
		segments[ i ] = ( XiePhotomap ) NULL;
	}
} 

int
CloseSegments( xp, p )
XParms	xp;
Parms	p;
{
	int	i;

	for ( i = 0; i < NTILES; i++ )
	{
		if ( segments[ i ] != ( XiePhotomap ) NULL )
		{
			XieDestroyPhotomap( xp->d, segments[ i ] );
			segments[ i ] = ( XiePhotomap ) NULL;
		}
	}
}

int
SegmentPhotomap( xp, p, pm, segvec, size, split, width, height )
XParms	xp;
Parms	p;
XiePhotomap pm;		
XiePhotomap segvec[];
int	size;
int	split;
int	width;
int	height;
{
	int	xoff, yoff;
	int     flo_elements;
	XiePhotoElement *flograph;
	int	segidx; 
	XiePhotospace photospace;
        XieEncodeTechnique encode_tech=xieValEncodeServerChoice;
        char *encode_param=NULL;
	float coefficients[ 6 ];
	int	i, retval;
	XieGeometryTechnique sample_tech = xieValGeomNearestNeighbor;
	char	*sample_param = NULL;
	unsigned long flo_id;
	int	piecewide, piecehigh;

	retval = 1;
	piecehigh = height / split; 
	piecewide = width / split; 
	photospace = XieCreatePhotospace(xp->d);
	flo_elements = 3;
	flograph = XieAllocatePhotofloGraph(flo_elements);

        if ( flograph == ( XiePhotoElement * ) NULL )
        {
                fprintf( stderr, "XieAllocatePhotofloGraph failed\n" );
		retval = 0;
        }

	/* build the photomaps */

	if ( retval )
	{
		for ( i = 0; i < size; i++ )
		{
			if ( ( segments[ i ] = XieCreatePhotomap( xp->d ) ) ==
				( XiePhotomap ) NULL )
			{
				fprintf( stderr,"XieCreatePhotomap failed\n" );
				retval = 0;
			}
		}
	}
	if ( retval )
	{			
		segidx = 0;
		coefficients[ 0 ] = 1.0;
		coefficients[ 1 ] = 0.0;
		coefficients[ 2 ] = 0.0;
		coefficients[ 3 ] = 1.0;
		flo_id = 1;
		for ( xoff = 0; xoff < width; xoff+= piecewide )
		{
			for (yoff = 0;yoff < width;yoff += piecehigh)
			{
				XieFloImportPhotomap( &flograph[ 0 ], 
					pm,
					False );
				coefficients[ 4 ] = (float) xoff;
				coefficients[ 5 ] = (float) yoff;
				XieFloGeometry( &flograph[ 1 ],
					1,
					piecewide, 
					piecehigh,
					coefficients,
					constant,
					7,
					sample_tech,
					sample_param
				);
				XieFloExportPhotomap( &flograph[ 2 ],
					2,
					segvec[ segidx++ ],
					encode_tech,
					encode_param
				);
				XieExecuteImmediate(xp->d, photospace,
					flo_id,
					True,
					flograph,   /* photoflo specification */
					flo_elements/* number of elements */
				);
				XSync( xp->d, 0 );
				WaitForXIEEvent( xp, xieEvnNoPhotofloDone, 
					flo_id, 0, False );	
				flo_id++;
			}
		}			
		XieFreePhotofloGraph(flograph, flo_elements);
		XieDestroyPhotospace(xp->d, photospace);
	}
	return( retval );
}

static int
BuildPasteUpFlograph( xp, p, flograph, segments, size, split, width, height )
XParms	xp;
Parms	p;
XiePhotoElement **flograph;
XiePhotomap segments[];
int	size;
int	split;
int	width;
int	height;
{
	int	i, flo_elements;
	int	tile_width, tile_height;
        XieProcessDomain domain;

	tile_width = width / split;
	tile_height = height / split;

	flo_elements = size + 2;	
	if ( monoflag )
		flo_elements+=2;

	*flograph = XieAllocatePhotofloGraph(flo_elements);	
	if ( *flograph == ( XiePhotoElement * ) NULL )
	{
		fprintf( stderr, "XieAllocatePhotofloGraph failed\n" );
		return( 0 );
	}

	/* do all of the import photo elements */

	for ( i = 0; i < size; i++ )
	{
		XieFloImportPhotomap(&(*flograph)[i], segments[ i ], False);
	}

	/* build all of the tiles, with initial dst_x and dst_y */

	if ( !BuildMeSomeTiles( tiles, split, tile_width, tile_height, 1,
		( ( PasteUpParms * ) p->ts )->overlap ) )
		return( 0 );

	/* gee, that was easy */

	/* now, for the pasteup element */ 	

	pasteUpIdx = size;
	XieFloPasteUp( &(*flograph)[ size ], width, height, constant, tiles, 
		size );
	
        if ( monoflag )
        {
	        XieFloImportLUT(&(*flograph)[size + 1], XIELut );

		domain.phototag = 0;
		domain.offset_x = 0;
		domain.offset_y = 0;
		XieFloPoint(&(*flograph)[size + 2],
			size + 1,
			&domain,
			size + 2,
			0x7
		);
        }

	XieFloExportDrawable(&(*flograph)[flo_elements - 1],
		flo_elements - 1,       /* source phototag number */
		xp->w,
		xp->fggc,
		0,       /* x offset in window */
		0        /* y offset in window */
	);

	flo = XieCreatePhotoflo( xp->d, *flograph, flo_elements );
	return( 1 );
}

int
BuildMeSomeTiles( tiles, split, width, height, method, overlap )
XieTile tiles[];
int	split;
int	width;
int	height;
int	method;
int	overlap;
{
	int i, j, idx;

	SetTileXY( tiles, split, width, height, method, overlap );

        idx = 0;
        for ( i = 0; i < split; i++ )
        {
                for ( j = 0; j < split; j++ )
                {
                        tiles[ idx ].src = idx + 1;
                        idx++;
                }
        }
	return( 1 );
}

int
SetTileXY( tiles, split, width, height, method, overlap )
XieTile	tiles[];
int	split;
int	width;
int	height;
int	method;
int	overlap;
{
	int	i, j, idx;

	idx = 0;
	if ( method == 0 ) 
	{
		for ( i = 0; i < split; i++ )
		{
			for ( j = 0; j < split; j++ )
			{
				if ( overlap == Overlap && i == j  )
				{
					tiles[ idx ].dst_x = i * width - ( width / 2 );
					tiles[ idx ].dst_y = j * height - ( height / 2 );
				}
				else
				{
					tiles[ idx ].dst_x = i * width;
					tiles[ idx ].dst_y = j * height;
				}
				idx++;
			}
		}
	}
	else if ( method == 1 )
	{
		for ( i = 0; i < split; i++ )
		{
			for ( j = 0; j < split; j++ )
			{
				if ( overlap == Overlap && i == j )
				{
					tiles[ idx ].dst_x = j * width - ( width / 2 );
					tiles[ idx ].dst_y = i * height - ( height / 2 );
				}
				else
				{
					tiles[ idx ].dst_x = j * width;
					tiles[ idx ].dst_y = i * height;
				}
				idx++;
			}
		}
	}
}

void DoPasteUp(xp, p, reps)
    XParms  xp;
    Parms   p;
    int     reps;
{
    	int     i, method;
	int	flo_notify;
	XIEimage *image;
	int	width, height, overlap;

	flo_notify = True;	
	image = p->finfo.image1;
	if ( !image )
		return;
	method = 0;
	width = image->width[ 0 ];
	height = image->height[ 0 ];
	overlap = ( ( PasteUpParms * ) p->ts )->overlap;
	for ( i = 0; i != reps; i++ )
	{
                XieExecutePhotoflo( xp->d, flo, flo_notify );
		WaitForXIEEvent( xp, xieEvnNoPhotofloDone, flo, 0, False );
		XSync( xp->d, 0 );

		if ( i < reps ) 
		{
			XieFreePasteUpTiles(&flograph[ pasteUpIdx ] );
			BuildMeSomeTiles( tiles, SPLIT, width / SPLIT,
				height / SPLIT, method++, overlap );
			if ( method == 2 )
				method = 0;
			XieFloPasteUp( &flograph[ pasteUpIdx ], width, height, 
				constant, tiles, NTILES );
			XieModifyPhotoflo( xp->d, flo, pasteUpIdx + 1, 
				&flograph[pasteUpIdx], 1 );
			XSync( xp->d, 0 );
		}
    	}
}

int
EndPasteUp(xp, p)
    XParms  xp;
    Parms   p;
{
	FreePasteUpStuff( xp, p );
}

int
FreePasteUpStuff( xp, p )
XParms	xp;
Parms	p;
{
	XieFreePasteUpTiles(&flograph[ pasteUpIdx ] );

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

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

	CloseSegments( xp, p );

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