131 lines
4.5 KiB
C++
131 lines
4.5 KiB
C++
/* -*- C++ -*-
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*
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* This file is part of RawTherapee.
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*
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* Copyright (c) 2018 Alberto Griggio <alberto.griggio@gmail.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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/**
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* Adapted from PhotoFlow, Copyright (C) 2014 Ferrero Andrea
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* also distributed under the GPL V3+
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*/
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#include "gamutwarning.h"
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#include <iostream>
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namespace rtengine {
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GamutWarning::GamutWarning(cmsHPROFILE iprof, cmsHPROFILE gamutprof, RenderingIntent intent, bool gamutbpc):
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lab2ref(nullptr),
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lab2softproof(nullptr),
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softproof2ref(nullptr)
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{
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if (cmsIsMatrixShaper(gamutprof) && !cmsIsCLUT(gamutprof, intent, LCMS_USED_AS_OUTPUT)) {
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cmsHPROFILE aces = ICCStore::getInstance()->workingSpace("ACESp0");
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if (aces) {
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lab2ref = cmsCreateTransform(iprof, TYPE_Lab_FLT, aces, TYPE_RGB_FLT, INTENT_ABSOLUTE_COLORIMETRIC, cmsFLAGS_NOOPTIMIZE | cmsFLAGS_NOCACHE);
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lab2softproof = cmsCreateTransform(iprof, TYPE_Lab_FLT, gamutprof, TYPE_RGB_FLT, INTENT_ABSOLUTE_COLORIMETRIC, cmsFLAGS_NOOPTIMIZE | cmsFLAGS_NOCACHE);
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softproof2ref = cmsCreateTransform(gamutprof, TYPE_RGB_FLT, aces, TYPE_RGB_FLT, INTENT_ABSOLUTE_COLORIMETRIC, cmsFLAGS_NOOPTIMIZE | cmsFLAGS_NOCACHE | (gamutbpc ? cmsFLAGS_BLACKPOINTCOMPENSATION : 0));
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}
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} else {
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lab2ref = nullptr;
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lab2softproof = cmsCreateTransform(iprof, TYPE_Lab_FLT, gamutprof, TYPE_RGB_FLT, INTENT_ABSOLUTE_COLORIMETRIC, cmsFLAGS_NOOPTIMIZE | cmsFLAGS_NOCACHE);
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softproof2ref = cmsCreateTransform(gamutprof, TYPE_RGB_FLT, iprof, TYPE_Lab_FLT, INTENT_ABSOLUTE_COLORIMETRIC, cmsFLAGS_NOOPTIMIZE | cmsFLAGS_NOCACHE | (gamutbpc ? cmsFLAGS_BLACKPOINTCOMPENSATION : 0));
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}
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if (!softproof2ref) {
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if (lab2softproof) {
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cmsDeleteTransform(lab2softproof);
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lab2softproof = nullptr;
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}
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} else if (!lab2softproof) {
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if (softproof2ref) {
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cmsDeleteTransform(softproof2ref);
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softproof2ref = nullptr;
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}
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}
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}
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GamutWarning::~GamutWarning()
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{
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if (softproof2ref) {
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cmsDeleteTransform(softproof2ref);
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}
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if (lab2ref) {
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cmsDeleteTransform(lab2ref);
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}
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if (lab2softproof) {
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cmsDeleteTransform(lab2softproof);
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}
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}
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void GamutWarning::markLine(Image8 *image, int y, float *srcbuf, float *buf1, float *buf2)
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{
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if (softproof2ref) {
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const int width = image->getWidth();
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float delta_max = lab2ref ? 0.0001f : 4.9999f;
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cmsDoTransform(lab2softproof, srcbuf, buf2, width);
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// since we are checking for out-of-gamut, we do want to clamp here!
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for (int i = 0; i < width * 3; ++i) {
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buf2[i] = LIM01(buf2[i]);
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}
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cmsDoTransform(softproof2ref, buf2, buf1, width);
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float *proofdata = buf1;
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float *refdata = srcbuf;
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if (lab2ref) {
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cmsDoTransform(lab2ref, srcbuf, buf2, width);
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refdata = buf2;
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int iy = 0;
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for (int j = 0; j < width; ++j) {
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float delta = max(std::abs(proofdata[iy] - refdata[iy]), std::abs(proofdata[iy+1] - refdata[iy+1]), std::abs(proofdata[iy+2] - refdata[iy+2]));
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iy += 3;
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if (delta > delta_max) {
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mark(image, y, j);
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}
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}
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} else {
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int iy = 0;
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for (int j = 0; j < width; ++j) {
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cmsCIELab lab1 = { proofdata[iy], proofdata[iy+1], proofdata[iy+2] };
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cmsCIELab lab2 = { refdata[iy], refdata[iy+1], refdata[iy+2] };
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iy += 3;
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float delta = cmsDeltaE(&lab1, &lab2);
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if (delta > delta_max) {
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mark(image, y, j);
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}
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}
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}
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}
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}
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inline void GamutWarning::mark(Image8 *image, int y, int x)
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{
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image->r(y, x) = 0;
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image->g(y, x) = 255;
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image->b(y, x) = 255;
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}
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} // namespace rtengine
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