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/**
* @brief Transform between color spaces using pfs library in MATLAB
*
* This file is a part of PFSTOOLS package.
* ----------------------------------------------------------------------
* Copyright (C) 2003,2004 Rafal Mantiuk and Grzegorz Krawczyk
*
* This program 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 program 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 program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* ----------------------------------------------------------------------
*
* @author Rafal Mantiuk, <mantiuk@mpi-sb.mpg.de>
*
* $Id: pfs_transform_colorspace.cpp,v 1.10 2014/02/16 19:02:30 rafm Exp $
*/
#include "compatibility.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sstream>
#include "mex.h"
#include "mex_utils.h"
#define SCRIPT_NAME "pfs_transform_colorspace"
#define error mexErrMsgTxt
#include <pfs.h>
#include <config.h>
static pfs::ColorSpace findColorSpace( const char *name );
void mexFunction(int nlhs, mxArray *plhs[],
int nrhs, const mxArray *prhs[])
{
/* Check for proper number of arguments. */
if( (nrhs != 5 ||
!mxIsChar( prhs[0] ) ||
!( mxIsDouble( prhs[1] ) || mxIsSingle( prhs[1] ) ) ||
!( mxIsDouble( prhs[2] ) || mxIsSingle( prhs[2] ) ) ||
!( mxIsDouble( prhs[3] ) || mxIsSingle( prhs[3] ) ) ||
!mxIsChar( prhs[4] )) &&
(nrhs != 3 ||
!mxIsChar( prhs[0] ) ||
!( mxIsDouble( prhs[1] ) || mxIsSingle( prhs[1] ) ) ||
mxGetNumberOfDimensions( prhs[1] ) != 3 ||
!mxIsChar( prhs[2] ))
)
error(SCRIPT_NAME ": Wrong number or type of input parameters!");
if( nlhs != 3 && nlhs != 1 )
error(SCRIPT_NAME ": Wrong number of output parameters!");
try {
pfs::ColorSpace inCS = findColorSpace( get_mex_string( prhs[0] ) );
pfs::ColorSpace outCS = findColorSpace( get_mex_string( prhs[nrhs-1] ) );
const mwSize *in_dim = mxGetDimensions( prhs[1] );
const int rows = (int)in_dim[0], cols = (int)in_dim[1];
// printf( "%d x %d\n", rows, cols );
pfs::Array2DImpl c1Buf( cols, rows ), c2Buf( cols, rows ), c3Buf( cols, rows );
if( nrhs == 5 ) {
copy_mex_to_pfsarray( prhs[1], &c1Buf );
copy_mex_to_pfsarray( prhs[2], &c2Buf );
copy_mex_to_pfsarray( prhs[3], &c3Buf );
} else {
copy_mex_to_pfsarray( prhs[1], &c1Buf, &c2Buf, &c3Buf );
}
pfs::transformColorSpace( inCS, &c1Buf, &c2Buf, &c3Buf, outCS, &c1Buf, &c2Buf, &c3Buf );
if( nlhs == 3 ) {
plhs[0] = mxCreateNumericMatrix( rows, cols, mxDEFAULT_ARRAY_CLASS, mxREAL );
plhs[1] = mxCreateNumericMatrix( rows, cols, mxDEFAULT_ARRAY_CLASS, mxREAL );
plhs[2] = mxCreateNumericMatrix( rows, cols, mxDEFAULT_ARRAY_CLASS, mxREAL );
copy_pfsarray_to_mex( &c1Buf, plhs[0] );
copy_pfsarray_to_mex( &c2Buf, plhs[1] );
copy_pfsarray_to_mex( &c3Buf, plhs[2] );
} else if( nlhs == 1 ) {
mwSize dims[] = { (mwSize)rows, (mwSize)cols, 3 };
plhs[0] = mxCreateNumericArray( 3, dims, mxDEFAULT_ARRAY_CLASS, mxREAL );
copy_pfsarray_to_mex( &c1Buf, &c2Buf, &c3Buf, plhs[0] );
}
}
catch( pfs::Exception ex )
{
std::stringstream error_message;
error_message << SCRIPT_NAME << ": " << ex.getMessage();
error( error_message.str().c_str() );
}
}
static pfs::ColorSpace findColorSpace( const char *name )
{
if( !strcasecmp( name, "XYZ" ) ) return pfs::CS_XYZ;
else if( !strcasecmp( name, "RGB" ) ) return pfs::CS_RGB;
else if( !strcasecmp( name, "SRGB" ) ) return pfs::CS_SRGB;
else if( !strcasecmp( name, "YUV" ) ) return pfs::CS_YUV;
else if( !strcasecmp( name, "YXY" ) ) return pfs::CS_Yxy;
else if( !strcasecmp( name, "RGB2020" ) ) return pfs::CS_RGB2020;
else if( !strcasecmp( name, "PQYCbCr2020" ) ) return pfs::CS_PQYCbCr2020;
else if( !strcasecmp( name, "HLGYCbCr2020") ) return pfs::CS_HLGYCbCr2020;
else if( !strcasecmp( name, "YCbCr709" ) ) return pfs::CS_YCbCr709;
throw pfs::Exception( "Not recognized color space" );
}
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