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/*
* This file is part of the KDE project
*
* Copyright (c) 2005 Cyrille Berger <cberger@cberger.net>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "kis_basic_math_toolbox.h"
KisBasicMathToolbox::KisBasicMathToolbox()
: KisMathToolbox(KisID("Basic"))
{
}
KisBasicMathToolbox::~KisBasicMathToolbox()
{
}
void KisBasicMathToolbox::wavetrans(KisMathToolbox::KisWavelet* wav, KisMathToolbox::KisWavelet* buff, uint halfsize)
{
uint l = (2*halfsize)*wav->depth*sizeof(float);
for(uint i = 0; i < halfsize; i++)
{
float * itLL = buff->coeffs + i*buff->size*buff->depth;
float * itHL = buff->coeffs + (i*buff->size + halfsize)*buff->depth;
float * itLH = buff->coeffs + (halfsize+i)*buff->size*buff->depth;
float * itHH = buff->coeffs + ( (halfsize+i)*buff->size + halfsize)*buff->depth;
float * itS11 = wav->coeffs + 2*i*wav->size*wav->depth;
float * itS12 = wav->coeffs + (2*i*wav->size+1)*wav->depth;
float * itS21 = wav->coeffs + (2*i+1)*wav->size*wav->depth;
float * itS22 = wav->coeffs + ((2*i+1)*wav->size+1)*wav->depth;
for(uint j = 0; j < halfsize; j++)
{
for( uint k = 0; k < wav->depth; k++)
{
*(itLL++) = (*itS11 + *itS12 + *itS21 + *itS22) * M_SQRT1_2;
*(itHL++) = (*itS11 - *itS12 + *itS21 - *itS22) * M_SQRT1_2;
*(itLH++) = (*itS11 + *itS12 - *itS21 - *itS22) * M_SQRT1_2;
*(itHH++) = (*(itS11++) - *(itS12++) - *(itS21++) + *(itS22++)) * M_SQRT1_2;
}
itS11 += wav->depth; itS12 += wav->depth;
itS21 += wav->depth; itS22 += wav->depth;
}
emit nextStep();
}
for(uint i = 0; i < halfsize; i++)
{
uint p = i*wav->size*wav->depth;
memcpy(wav->coeffs + p, buff->coeffs + p, l);
p = (i + halfsize )*wav->size*wav->depth;
memcpy(wav->coeffs + p, buff->coeffs + p, l);
}
if(halfsize != 1)
{
wavetrans(wav, buff, halfsize/2);
}
}
void KisBasicMathToolbox::waveuntrans(KisMathToolbox::KisWavelet* wav, KisMathToolbox::KisWavelet* buff, uint halfsize)
{
uint l = (2*halfsize)*wav->depth*sizeof(float);
for(uint i = 0; i < halfsize; i++)
{
float * itLL = wav->coeffs + i*buff->size*buff->depth;
float * itHL = wav->coeffs + (i*buff->size + halfsize)*buff->depth;
float * itLH = wav->coeffs + (halfsize+i)*buff->size*buff->depth;
float * itHH = wav->coeffs + ( (halfsize+i)*buff->size + halfsize)*buff->depth;
float * itS11 = buff->coeffs + 2*i*wav->size*wav->depth;
float * itS12 = buff->coeffs + (2*i*wav->size+1)*wav->depth;
float * itS21 = buff->coeffs + (2*i+1)*wav->size*wav->depth;
float * itS22 = buff->coeffs + ((2*i+1)*wav->size+1)*wav->depth;
for(uint j = 0; j < halfsize; j++)
{
for( uint k = 0; k < wav->depth; k++)
{
*(itS11++) = (*itLL + *itHL + *itLH + *itHH)*0.25*M_SQRT2;
*(itS12++) = (*itLL - *itHL + *itLH - *itHH)*0.25*M_SQRT2;
*(itS21++) = (*itLL + *itHL - *itLH - *itHH)*0.25*M_SQRT2;
*(itS22++) = (*(itLL++) - *(itHL++) - *(itLH++) + *(itHH++))*0.25*M_SQRT2;
}
itS11 += wav->depth; itS12 += wav->depth;
itS21 += wav->depth; itS22 += wav->depth;
}
emit nextStep();
}
for(uint i = 0; i < halfsize; i++)
{
uint p = i*wav->size*wav->depth;
memcpy(wav->coeffs + p, buff->coeffs + p, l);
p = (i + halfsize )*wav->size*wav->depth;
memcpy(wav->coeffs + p, buff->coeffs + p, l);
}
if(halfsize != wav->size/2)
{
waveuntrans(wav, buff, halfsize*2);
}
}
KisMathToolbox::KisWavelet* KisBasicMathToolbox::fastWaveletTransformation(KisPaintDeviceSP src, const QRect& rect, KisWavelet* buff)
{
if(buff == 0)
{
buff = initWavelet( src, rect );
}
KisWavelet* wav = initWavelet( src, rect );
transformToFR(src, wav, rect);
wavetrans(wav, buff, wav->size / 2);
return wav;
}
void KisBasicMathToolbox::fastWaveletUntransformation(KisPaintDeviceSP dst, const QRect& rect, KisWavelet* wav, KisWavelet* buff)
{
if(buff == 0)
{
buff = initWavelet( dst, rect );
}
waveuntrans(wav, buff, 1 );
transformFromFR(dst, wav, rect);
}
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