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/* ========================================================================
* PROJECT: ARToolKitPlus
* ========================================================================
* This work is based on the original ARToolKit developed by
* Hirokazu Kato
* Mark Billinghurst
* HITLab, University of Washington, Seattle
* http://www.hitl.washington.edu/artoolkit/
*
* Copyright of the derived and new portions of this work
* (C) 2006 Graz University of Technology
*
* This framework is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This framework is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this framework; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For further information please contact
* Dieter Schmalstieg
* <schmalstieg@icg.tu-graz.ac.at>
* Graz University of Technology,
* Institut for Computer Graphics and Vision,
* Inffeldgasse 16a, 8010 Graz, Austria.
* ========================================================================
** @author Thomas Pintaric
*
* $Id: byteSwap.cxx 162 2006-04-19 21:28:10Z grabner $
* @file
* ======================================================================== */
#include <ARToolKitPlus/param.h>
namespace ARToolKitPlus {
#ifdef AR_LITTLE_ENDIAN
typedef union {
int x;
unsigned char y[4];
} SwapIntT;
typedef union {
ARFloat x;
unsigned char y[8];
} SwapDoubleT;
static void
byteSwapInt( int *from, int *to )
{
SwapIntT *w1, *w2;
int i;
w1 = (SwapIntT *)from;
w2 = (SwapIntT *)to;
for( i = 0; i < 4; i++ ) {
w2->y[i] = w1->y[3-i];
}
return;
}
static void
byteSwapDouble( double *from, double *to )
{
SwapDoubleT *w1, *w2;
int i;
w1 = (SwapDoubleT *)from;
w2 = (SwapDoubleT *)to;
for( i = 0; i < 8; i++ ) {
w2->y[i] = w1->y[7-i];
}
return;
}
static void
byteswap( ARParamDouble *param )
{
ARParamDouble wparam;
int i, j;
byteSwapInt( &(param->xsize), &(wparam.xsize) );
byteSwapInt( &(param->ysize), &(wparam.ysize) );
for( j = 0; j < 3; j++ ) {
for( i = 0; i < 4; i++ ) {
byteSwapDouble( &(param->mat[j][i]), &(wparam.mat[j][i]) );
}
}
for( i = 0; i < 4; i++ ) {
byteSwapDouble( &(param->dist_factor[i]), &(wparam.dist_factor[i]) );
}
*param = wparam;
}
#endif //AR_LITTLE_ENDIAN
} // namespace ARToolKitPlus
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