579 lines
18 KiB
C++
579 lines
18 KiB
C++
/*
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* This file is part of RawTherapee.
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*
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* Copyright (c) 2004-2010 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 "rtengine.h"
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#include "image8.h"
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#include "imagefloat.h"
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#include "labimage.h"
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#include "improcfun.h"
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#include <glibmm/ustring.h>
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#include "iccstore.h"
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#include "iccmatrices.h"
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#include "../rtgui/options.h"
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#include "settings.h"
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#include "alignedbuffer.h"
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#include "color.h"
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#include "procparams.h"
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namespace rtengine
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{
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extern void filmlike_clip(float *r, float *g, float *b);
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extern const Settings* settings;
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namespace {
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inline void copyAndClampLine(const float *src, unsigned char *dst, const int W)
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{
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for (int j = 0, iy = 0; j < W; ++j) {
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float r = src[iy] * MAXVALF;
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float g = src[iy+1] * MAXVALF;
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float b = src[iy+2] * MAXVALF;
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dst[iy] = uint16ToUint8Rounded(CLIP(r));
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dst[iy+1] = uint16ToUint8Rounded(CLIP(g));
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dst[iy+2] = uint16ToUint8Rounded(CLIP(b));
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iy += 3;
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}
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}
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inline void copyAndClamp(const LabImage *src, unsigned char *dst, const double rgb_xyz[3][3], bool multiThread)
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{
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int W = src->W;
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int H = src->H;
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#ifdef _OPENMP
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#pragma omp parallel for schedule(dynamic,16) if (multiThread)
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#endif
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for (int i = 0; i < H; ++i) {
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float* rL = src->L[i];
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float* ra = src->a[i];
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float* rb = src->b[i];
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int ix = i * 3 * W;
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float R, G, B;
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float x_, y_, z_;
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for (int j = 0; j < W; ++j) {
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Color::Lab2XYZ(rL[j], ra[j], rb[j], x_, y_, z_ );
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Color::xyz2rgb(x_, y_, z_, R, G, B, rgb_xyz);
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dst[ix++] = uint16ToUint8Rounded(Color::gamma2curve[R]);
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dst[ix++] = uint16ToUint8Rounded(Color::gamma2curve[G]);
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dst[ix++] = uint16ToUint8Rounded(Color::gamma2curve[B]);
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}
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}
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}
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} // namespace
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// Used in ImProcCoordinator::updatePreviewImage (rtengine/improccoordinator.cc)
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// Crop::update (rtengine/dcrop.cc)
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// Thumbnail::processImage (rtengine/rtthumbnail.cc)
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//
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// If monitorTransform, divide by 327.68 then apply monitorTransform (which can integrate soft-proofing)
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// otherwise divide by 327.68, convert to xyz and apply the sRGB transform, before converting with gamma2curve
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void ImProcFunctions::lab2monitorRgb(LabImage* lab, Image8* image)
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{
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if (monitorTransform) {
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int W = lab->W;
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int H = lab->H;
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unsigned char * data = image->data;
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// cmsDoTransform is relatively expensive
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#ifdef _OPENMP
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#pragma omp parallel firstprivate(lab, data, W, H)
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#endif
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{
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AlignedBuffer<float> pBuf(3 * lab->W);
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AlignedBuffer<float> mBuf(3 * lab->W);
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AlignedBuffer<float> gwBuf1;
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AlignedBuffer<float> gwBuf2;
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if (gamutWarning) {
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gwBuf1.resize(3 * lab->W);
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gwBuf2.resize(3 * lab->W);
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}
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float *buffer = pBuf.data;
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float *outbuffer = mBuf.data;
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#ifdef _OPENMP
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#pragma omp for schedule(dynamic,16)
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#endif
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for (int i = 0; i < H; i++) {
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const int ix = i * 3 * W;
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int iy = 0;
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float* rL = lab->L[i];
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float* ra = lab->a[i];
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float* rb = lab->b[i];
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for (int j = 0; j < W; j++) {
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buffer[iy++] = rL[j] / 327.68f;
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buffer[iy++] = ra[j] / 327.68f;
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buffer[iy++] = rb[j] / 327.68f;
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}
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cmsDoTransform (monitorTransform, buffer, outbuffer, W);
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copyAndClampLine(outbuffer, data + ix, W);
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if (gamutWarning) {
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gamutWarning->markLine(image, i, buffer, gwBuf1.data, gwBuf2.data);
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}
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}
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} // End of parallelization
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} else {
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copyAndClamp(lab, image->data, sRGB_xyz, multiThread);
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}
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}
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// Used in ImProcCoordinator::updatePreviewImage (rtengine/improccoordinator.cc)
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// Crop::update (rtengine/dcrop.cc)
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//
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// Generate an Image8
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//
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// If output profile used, divide by 327.68 then apply the "profile" profile (eventually with a standard gamma)
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// otherwise divide by 327.68, convert to xyz and apply the RGB transform, before converting with gamma2curve
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Image8* ImProcFunctions::lab2rgb(LabImage* lab, int cx, int cy, int cw, int ch, const procparams::ColorManagementParams &icm, bool consider_histogram_settings)
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{
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//gamutmap(lab);
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if (cx < 0) {
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cx = 0;
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}
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if (cy < 0) {
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cy = 0;
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}
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if (cx + cw > lab->W) {
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cw = lab->W - cx;
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}
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if (cy + ch > lab->H) {
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ch = lab->H - cy;
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}
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Image8* image = new Image8(cw, ch);
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Glib::ustring profile;
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bool standard_gamma;
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if (settings->HistogramWorking && consider_histogram_settings) {
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profile = icm.workingProfile;
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standard_gamma = true;
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} else {
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profile = icm.outputProfile;
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if (icm.outputProfile.empty() || icm.outputProfile == ColorManagementParams::NoICMString) {
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profile = "sRGB";
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}
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standard_gamma = false;
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}
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cmsHPROFILE oprof = ICCStore::getInstance()->getProfile(profile);
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if (oprof) {
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cmsHPROFILE oprofG = oprof;
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if (standard_gamma) {
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oprofG = ICCStore::makeStdGammaProfile(oprof);
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}
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cmsUInt32Number flags = cmsFLAGS_NOOPTIMIZE | cmsFLAGS_NOCACHE;
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if (icm.outputBPC) {
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flags |= cmsFLAGS_BLACKPOINTCOMPENSATION;
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}
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lcmsMutex->lock();
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cmsHPROFILE LabIProf = cmsCreateLab4Profile(nullptr);
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cmsHTRANSFORM hTransform = cmsCreateTransform (LabIProf, TYPE_Lab_DBL, oprofG, TYPE_RGB_FLT, icm.outputIntent, flags); // NOCACHE is important for thread safety
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cmsCloseProfile(LabIProf);
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lcmsMutex->unlock();
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unsigned char *data = image->data;
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// cmsDoTransform is relatively expensive
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#ifdef _OPENMP
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#pragma omp parallel
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#endif
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{
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AlignedBuffer<double> pBuf(3 * cw);
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AlignedBuffer<float> oBuf(3 * cw);
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double *buffer = pBuf.data;
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float *outbuffer = oBuf.data;
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int condition = cy + ch;
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#ifdef _OPENMP
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#pragma omp for firstprivate(lab) schedule(dynamic,16)
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#endif
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for (int i = cy; i < condition; i++) {
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const int ix = i * 3 * cw;
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int iy = 0;
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float* rL = lab->L[i];
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float* ra = lab->a[i];
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float* rb = lab->b[i];
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for (int j = cx; j < cx + cw; j++) {
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buffer[iy++] = rL[j] / 327.68f;
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buffer[iy++] = ra[j] / 327.68f;
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buffer[iy++] = rb[j] / 327.68f;
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}
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cmsDoTransform (hTransform, buffer, outbuffer, cw);
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copyAndClampLine(outbuffer, data + ix, cw);
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}
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} // End of parallelization
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cmsDeleteTransform(hTransform);
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if (oprofG != oprof) {
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cmsCloseProfile(oprofG);
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}
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} else {
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const auto xyz_rgb = ICCStore::getInstance()->workingSpaceInverseMatrix(profile);
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copyAndClamp(lab, image->data, xyz_rgb, multiThread);
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}
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return image;
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}
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/** @brief Convert the final Lab image to the output RGB color space
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*
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* Used in processImage (rtengine/simpleprocess.cc)
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*
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* Provide a pointer to a 7 floats array for "ga" (uninitialized ; this array will be filled with the gamma values) if you want
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* to use the custom gamma scenario. Those gamma values will correspond to the ones of the chosen standard output profile
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* (Prophoto if non standard output profile given)
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*
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* If "ga" is NULL, then we're considering standard gamma with the chosen output profile.
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*
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* Generate an Image16
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*
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* If a custom gamma profile can be created, divide by 327.68, convert to xyz and apply the custom gamma transform
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* otherwise divide by 327.68, convert to xyz and apply the sRGB transform, before converting with gamma2curve
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*/
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Imagefloat* ImProcFunctions::lab2rgbOut(LabImage* lab, int cx, int cy, int cw, int ch, const procparams::ColorManagementParams &icm)
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{
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if (cx < 0) {
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cx = 0;
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}
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if (cy < 0) {
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cy = 0;
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}
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if (cx + cw > lab->W) {
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cw = lab->W - cx;
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}
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if (cy + ch > lab->H) {
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ch = lab->H - cy;
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}
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Imagefloat* image = new Imagefloat(cw, ch);
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cmsHPROFILE oprof = ICCStore::getInstance()->getProfile(icm.outputProfile);
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if (oprof) {
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cmsUInt32Number flags = cmsFLAGS_NOOPTIMIZE | cmsFLAGS_NOCACHE;
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if (icm.outputBPC) {
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flags |= cmsFLAGS_BLACKPOINTCOMPENSATION;
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}
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lcmsMutex->lock();
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cmsHPROFILE iprof = cmsCreateLab4Profile(nullptr);
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cmsHTRANSFORM hTransform = cmsCreateTransform(iprof, TYPE_Lab_FLT, oprof, TYPE_RGB_FLT, icm.outputIntent, flags);
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lcmsMutex->unlock();
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image->ExecCMSTransform(hTransform, *lab, cx, cy);
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cmsDeleteTransform(hTransform);
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image->normalizeFloatTo65535();
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} else {
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#ifdef _OPENMP
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#pragma omp parallel for schedule(dynamic,16) if (multiThread)
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#endif
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for (int i = cy; i < cy + ch; i++) {
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float R, G, B;
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float* rL = lab->L[i];
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float* ra = lab->a[i];
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float* rb = lab->b[i];
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for (int j = cx; j < cx + cw; j++) {
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float fy = (Color::c1By116 * rL[j]) / 327.68f + Color::c16By116; // (L+16)/116
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float fx = (0.002f * ra[j]) / 327.68f + fy;
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float fz = fy - (0.005f * rb[j]) / 327.68f;
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float LL = rL[j] / 327.68f;
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float x_ = 65535.0f * Color::f2xyz(fx) * Color::D50x;
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//float y_ = 65535.0 * Color::f2xyz(fy);
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float z_ = 65535.0f * Color::f2xyz(fz) * Color::D50z;
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float y_ = (LL > (float)Color::epskap) ? 65535.0f * fy * fy * fy : 65535.0f * LL / (float)Color::kappa;
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Color::xyz2srgb(x_, y_, z_, R, G, B);
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image->r(i - cy, j - cx) = Color::gamma2curve[CLIP(R)];
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image->g(i - cy, j - cx) = Color::gamma2curve[CLIP(G)];
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image->b(i - cy, j - cx) = Color::gamma2curve[CLIP(B)];
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}
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}
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}
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return image;
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}
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void ImProcFunctions::workingtrc(const Imagefloat* src, Imagefloat* dst, int cw, int ch, int mul, const Glib::ustring &profile, double gampos, double slpos, cmsHTRANSFORM &transform, bool normalizeIn, bool normalizeOut, bool keepTransForm) const
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{
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const TMatrix wprof = ICCStore::getInstance()->workingSpaceMatrix(params->icm.workingProfile);
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const float toxyz[3][3] = {
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{
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static_cast<float>(wprof[0][0] / ((normalizeIn ? 65535.0 : 1.0))), //I have suppressed / Color::D50x
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static_cast<float>(wprof[0][1] / ((normalizeIn ? 65535.0 : 1.0))),
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static_cast<float>(wprof[0][2] / ((normalizeIn ? 65535.0 : 1.0)))
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}, {
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static_cast<float>(wprof[1][0] / (normalizeIn ? 65535.0 : 1.0)),
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static_cast<float>(wprof[1][1] / (normalizeIn ? 65535.0 : 1.0)),
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static_cast<float>(wprof[1][2] / (normalizeIn ? 65535.0 : 1.0))
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}, {
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static_cast<float>(wprof[2][0] / ((normalizeIn ? 65535.0 : 1.0))), //I have suppressed / Color::D50z
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static_cast<float>(wprof[2][1] / ((normalizeIn ? 65535.0 : 1.0))),
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static_cast<float>(wprof[2][2] / ((normalizeIn ? 65535.0 : 1.0)))
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}
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};
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cmsHTRANSFORM hTransform = nullptr;
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if (transform) {
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hTransform = transform;
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} else {
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double pwr = 1.0 / gampos;
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double ts = slpos;
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int five = mul;
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if (gampos < 1.0) {
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pwr = gampos;
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gampos = 1. / gampos;
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five = -mul;
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}
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// int select_temp = 1; //5003K
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constexpr double eps = 0.000000001; // not divide by zero
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enum class ColorTemp {
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D50 = 5003, // for Widegamut, ProPhoto Best, Beta -> D50
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D65 = 6504, // for sRGB, AdobeRGB, Bruce Rec2020 -> D65
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D60 = 6005 // for ACES AP0 and AP1
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};
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ColorTemp temp = ColorTemp::D50;
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float p[6]; //primaries
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//primaries for 10 working profiles ==> output profiles
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if (profile == "WideGamut") {
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p[0] = 0.7350; //Widegamut primaries
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p[1] = 0.2650;
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p[2] = 0.1150;
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p[3] = 0.8260;
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p[4] = 0.1570;
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p[5] = 0.0180;
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} else if (profile == "Adobe RGB") {
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p[0] = 0.6400; //Adobe primaries
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p[1] = 0.3300;
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p[2] = 0.2100;
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p[3] = 0.7100;
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p[4] = 0.1500;
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p[5] = 0.0600;
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temp = ColorTemp::D65;
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} else if (profile == "sRGB") {
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p[0] = 0.6400; // sRGB primaries
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p[1] = 0.3300;
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p[2] = 0.3000;
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p[3] = 0.6000;
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p[4] = 0.1500;
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p[5] = 0.0600;
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temp = ColorTemp::D65;
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} else if (profile == "BruceRGB") {
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p[0] = 0.6400; // Bruce primaries
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p[1] = 0.3300;
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p[2] = 0.2800;
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p[3] = 0.6500;
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p[4] = 0.1500;
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p[5] = 0.0600;
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temp = ColorTemp::D65;
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} else if (profile == "Beta RGB") {
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p[0] = 0.6888; // Beta primaries
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p[1] = 0.3112;
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p[2] = 0.1986;
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p[3] = 0.7551;
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p[4] = 0.1265;
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p[5] = 0.0352;
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} else if (profile == "BestRGB") {
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p[0] = 0.7347; // Best primaries
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p[1] = 0.2653;
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p[2] = 0.2150;
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p[3] = 0.7750;
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p[4] = 0.1300;
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p[5] = 0.0350;
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} else if (profile == "Rec2020") {
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p[0] = 0.7080; // Rec2020 primaries
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p[1] = 0.2920;
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p[2] = 0.1700;
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p[3] = 0.7970;
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p[4] = 0.1310;
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p[5] = 0.0460;
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temp = ColorTemp::D65;
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} else if (profile == "ACESp0") {
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p[0] = 0.7347; // ACES P0 primaries
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p[1] = 0.2653;
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p[2] = 0.0000;
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p[3] = 1.0;
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p[4] = 0.0001;
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p[5] = -0.0770;
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temp = ColorTemp::D60;
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} else if (profile == "ACESp1") {
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p[0] = 0.713; // ACES P1 primaries
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p[1] = 0.293;
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p[2] = 0.165;
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p[3] = 0.830;
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p[4] = 0.128;
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p[5] = 0.044;
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temp = ColorTemp::D60;
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} else if (profile == "ProPhoto") {
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p[0] = 0.7347; //ProPhoto and default primaries
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p[1] = 0.2653;
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p[2] = 0.1596;
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p[3] = 0.8404;
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p[4] = 0.0366;
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p[5] = 0.0001;
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} else {
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p[0] = 0.7347; //default primaries always unused
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p[1] = 0.2653;
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|
p[2] = 0.1596;
|
|
p[3] = 0.8404;
|
|
p[4] = 0.0366;
|
|
p[5] = 0.0001;
|
|
}
|
|
|
|
if (slpos == 0) {
|
|
slpos = eps;
|
|
}
|
|
|
|
GammaValues g_a; //gamma parameters
|
|
constexpr int mode = 0;
|
|
Color::calcGamma(pwr, ts, mode, g_a); // call to calcGamma with selected gamma and slope : return parameters for LCMS2
|
|
|
|
|
|
cmsFloat64Number gammaParams[7];
|
|
gammaParams[4] = g_a[3] * ts;
|
|
gammaParams[0] = gampos;
|
|
gammaParams[1] = 1. / (1.0 + g_a[4]);
|
|
gammaParams[2] = g_a[4] / (1.0 + g_a[4]);
|
|
gammaParams[3] = 1. / slpos;
|
|
gammaParams[5] = 0.0;
|
|
gammaParams[6] = 0.0;
|
|
// printf("ga0=%f ga1=%f ga2=%f ga3=%f ga4=%f\n", ga0, ga1, ga2, ga3, ga4);
|
|
|
|
// 7 parameters for smoother curves
|
|
cmsCIExyY xyD;
|
|
cmsWhitePointFromTemp(&xyD, (double)temp);
|
|
if (profile == "ACESp0") {
|
|
xyD = {0.32168, 0.33767, 1.0};//refine white point to avoid differences
|
|
}
|
|
|
|
cmsToneCurve* GammaTRC[3];
|
|
GammaTRC[0] = GammaTRC[1] = GammaTRC[2] = cmsBuildParametricToneCurve(NULL, five, gammaParams);//5 = more smoother than 4
|
|
|
|
const cmsCIExyYTRIPLE Primaries = {
|
|
{p[0], p[1], 1.0}, // red
|
|
{p[2], p[3], 1.0}, // green
|
|
{p[4], p[5], 1.0} // blue
|
|
};
|
|
const cmsHPROFILE oprofdef = cmsCreateRGBProfile(&xyD, &Primaries, GammaTRC);
|
|
cmsFreeToneCurve(GammaTRC[0]);
|
|
|
|
if (oprofdef) {
|
|
constexpr cmsUInt32Number flags = cmsFLAGS_NOOPTIMIZE | cmsFLAGS_NOCACHE;
|
|
const cmsHPROFILE iprof = ICCStore::getInstance()->getXYZProfile();
|
|
lcmsMutex->lock();
|
|
hTransform = cmsCreateTransform(iprof, TYPE_RGB_FLT, oprofdef, TYPE_RGB_FLT, params->icm.outputIntent, flags);
|
|
lcmsMutex->unlock();
|
|
}
|
|
}
|
|
if (hTransform) {
|
|
#ifdef _OPENMP
|
|
#pragma omp parallel if (multiThread)
|
|
#endif
|
|
{
|
|
AlignedBuffer<float> pBuf(cw * 3);
|
|
const float normalize = normalizeOut ? 65535.f : 1.f;
|
|
|
|
#ifdef _OPENMP
|
|
#pragma omp for schedule(dynamic, 16) nowait
|
|
#endif
|
|
|
|
for (int i = 0; i < ch; ++i) {
|
|
float *p = pBuf.data;
|
|
for (int j = 0; j < cw; ++j) {
|
|
const float r = src->r(i, j);
|
|
const float g = src->g(i, j);
|
|
const float b = src->b(i, j);
|
|
|
|
*(p++) = toxyz[0][0] * r + toxyz[0][1] * g + toxyz[0][2] * b;
|
|
*(p++) = toxyz[1][0] * r + toxyz[1][1] * g + toxyz[1][2] * b;
|
|
*(p++) = toxyz[2][0] * r + toxyz[2][1] * g + toxyz[2][2] * b;
|
|
}
|
|
p = pBuf.data;
|
|
cmsDoTransform(hTransform, p, p, cw);
|
|
for (int j = 0; j < cw; ++j) {
|
|
dst->r(i, j) = *(p++) * normalize;
|
|
dst->g(i, j) = *(p++) * normalize;
|
|
dst->b(i, j) = *(p++) * normalize;
|
|
}
|
|
}
|
|
}
|
|
if (!keepTransForm) {
|
|
cmsDeleteTransform(hTransform);
|
|
hTransform = nullptr;
|
|
}
|
|
transform = hTransform;
|
|
}
|
|
}
|
|
|
|
|
|
}
|