135 lines
3.3 KiB
C++
135 lines
3.3 KiB
C++
/*
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* This file is part of RawTherapee.
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*
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* Copyright (c) 2004-2017 Gabor Horvath <hgabor@rawtherapee.com>
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*
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* RawTherapee is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* RawTherapee is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with RawTherapee. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <memory>
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#include "labimage.h"
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namespace rtengine
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{
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LabImage::LabImage (int w, int h, bool initZero, bool multiThread) : W(w), H(h)
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{
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allocLab(w, h);
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if (initZero) {
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clear(multiThread);
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}
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}
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LabImage::LabImage (const LabImage& source, bool multiThread) : W(source.W), H(source.H)
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{
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allocLab(W, H);
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CopyFrom(&source, multiThread);
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}
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LabImage::~LabImage ()
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{
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deleteLab();
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}
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void LabImage::CopyFrom(const LabImage *Img, bool multiThread)
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{
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#ifdef _OPENMP
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#pragma omp parallel sections if(multiThread)
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{
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#pragma omp section
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memcpy(L[0], Img->L[0], static_cast<std::size_t>(W) * H * sizeof(float));
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#pragma omp section
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memcpy(a[0], Img->a[0], static_cast<std::size_t>(W) * H * sizeof(float));
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#pragma omp section
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memcpy(b[0], Img->b[0], static_cast<std::size_t>(W) * H * sizeof(float));
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}
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#else
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memcpy(data, Img->data, static_cast<std::size_t>(W) * H * 3 * sizeof(float));
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#endif
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}
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void LabImage::getPipetteData (float &v1, float &v2, float &v3, int posX, int posY, int squareSize) const
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{
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float accumulator_L = 0.f;
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float accumulator_a = 0.f;
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float accumulator_b = 0.f;
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unsigned long int n = 0;
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int halfSquare = squareSize / 2;
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for (int iy = posY - halfSquare; iy < posY - halfSquare + squareSize; ++iy) {
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for (int ix = posX - halfSquare; ix < posX - halfSquare + squareSize; ++ix) {
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if (ix >= 0 && iy >= 0 && ix < W && iy < H) {
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accumulator_L += L[iy][ix];
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accumulator_a += a[iy][ix];
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accumulator_b += b[iy][ix];
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++n;
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}
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}
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}
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v1 = n ? accumulator_L / float(n) : 0.f;
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v2 = n ? accumulator_a / float(n) : 0.f;
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v3 = n ? accumulator_b / float(n) : 0.f;
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}
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void LabImage::allocLab(size_t w, size_t h)
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{
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L = new float*[h];
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a = new float*[h];
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b = new float*[h];
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data = new float [w * h * 3];
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float * index = data;
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for (size_t i = 0; i < h; i++) {
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L[i] = index + i * w;
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}
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index += w * h;
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for (size_t i = 0; i < h; i++) {
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a[i] = index + i * w;
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}
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index += w * h;
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for (size_t i = 0; i < h; i++) {
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b[i] = index + i * w;
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}
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}
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void LabImage::deleteLab()
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{
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delete [] L;
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delete [] a;
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delete [] b;
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delete [] data;
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}
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void LabImage::reallocLab()
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{
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allocLab(W, H);
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}
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void LabImage::clear(bool multiThread) {
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#ifdef _OPENMP
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#pragma omp parallel for if(multiThread)
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#endif
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for(size_t i = 0; i < static_cast<size_t>(H) * W * 3; ++i) {
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data[i] = 0.f;
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}
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}
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}
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