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if no b/a area enabled some speed up when opening images

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askvortsov
2010-09-09 16:17:56 -07:00
commit 459a8e4b0e
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rtengine/cubintch.cc Normal file
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/*
* This file is part of RawTherapee.
*
* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
*
* RawTherapee 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 3 of the License, or
* (at your option) any later version.
*
* RawTherapee 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 RawTherapee. If not, see <http://www.gnu.org/licenses/>.
*/
inline void cubintch (unsigned short** src, int xs, int ys, double Dx, double Dy, unsigned short *r, double mul) {
register double w[4];
{ register double t1, t2;
t1 = -A*(Dx-1.0)*Dx;
t2 = (3.0-2.0*Dx)*Dx*Dx;
w[3] = t1*Dx;
w[2] = t1*(Dx-1.0) + t2;
w[1] = -t1*Dx + 1.0 - t2;
w[0] = -t1*(Dx-1.0);
}
register double rd;
double yr[4];
for (int k=ys, kx=0; k<ys+4; k++, kx++) {
rd = 0.0;
for (int i=xs, ix=0; i<xs+4; i++, ix++) {
rd += src[k][i] * w[ix];
}
yr[kx] = rd;
}
{ register double t1, t2;
t1 = -A*(Dy-1.0)*Dy;
t2 = (3.0-2.0*Dy)*Dy*Dy;
w[3] = t1*Dy;
w[2] = t1*(Dy-1.0) + t2;
w[1] = -t1*Dy + 1.0 - t2;
w[0] = -t1*(Dy-1.0);
}
rd = 0.0;
for (int i=0; i<4; i++)
rd += yr[i] * w[i];
rd*=mul;
*r = (int)CLIP(rd);
}