Moved the ICC TRC patching code for RTv2 profiles from ImProcFunctions::lab2rgbOut to ICCStore
See #5026
This commit is contained in:
Alberto Griggio
parent
23aa0562aa
commit
cfc947a865
@ -38,6 +38,8 @@
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#include "../rtgui/threadutils.h"
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#include "lcms2_plugin.h"
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#include "color.h"
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#include "cJSON.h"
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#define inkc_constant 0x696E6B43
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namespace rtengine
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@ -208,8 +210,85 @@ const char* wpnames[] = {"sRGB", "Adobe RGB", "ProPhoto", "WideGamut", "BruceRGB
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// high g=1.3 s=3.35 for high dynamic images
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//low g=2.6 s=6.9 for low contrast images
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//-----------------------------------------------------------------------------
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// helper functions to fix V2 profiles TRCs, used in
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// rtengine::ProfileContent::toProfile()
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// see https://github.com/Beep6581/RawTherapee/issues/5026
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// -----------------------------------------------------------------------------
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bool is_RTv2_profile(cmsHPROFILE profile)
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{
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if (int(cmsGetProfileVersion(profile)) != 2) {
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return false;
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}
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const cmsMLU *mlu = static_cast<const cmsMLU *>(cmsReadTag(profile, cmsSigDeviceMfgDescTag));
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if (!mlu) {
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return false;
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}
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cmsUInt32Number sz = cmsMLUgetASCII(mlu, "en", "US", nullptr, 0);
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if (!sz) {
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return false;
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}
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std::vector<char> buf(sz);
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cmsMLUgetASCII(mlu, "en", "US", &buf[0], sz);
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buf.back() = 0; // sanity
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return strcmp(&buf[0], "RawTherapee") == 0;
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}
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bool get_RT_gamma_slope(cmsHPROFILE profile, double &gammatag, double &slopetag)
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{
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const cmsMLU *modelDescMLU = static_cast<const cmsMLU *>(cmsReadTag(profile, cmsSigDeviceModelDescTag));
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if (modelDescMLU) {
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cmsUInt32Number count = cmsMLUgetWide(modelDescMLU, "en", "US", nullptr, 0);
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if (count) {
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std::vector<wchar_t> vbuf(count);
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wchar_t *buffer = &vbuf[0];
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count = cmsMLUgetWide(modelDescMLU, "en", "US", buffer, count);
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Glib::ustring modelDesc;
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#if __SIZEOF_WCHAR_T__ == 2
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char *cModelDesc = g_utf16_to_utf8((unsigned short int*)buffer, -1, nullptr, nullptr, nullptr); // convert to utf-8 in a buffer allocated by glib
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if (cModelDesc) {
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modelDesc.assign(cModelDesc);
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g_free(cModelDesc);
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}
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#else
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modelDesc = utf32_to_utf8(buffer, count);
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#endif
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if (!modelDesc.empty()) {
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std::size_t pos = modelDesc.find("g");
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std::size_t posmid = modelDesc.find("s");
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std::size_t posend = modelDesc.find("!");
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std::string strgamma = modelDesc.substr(pos + 1, (posmid - pos));
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gammatag = std::stod(strgamma.c_str());
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std::string strslope = modelDesc.substr(posmid + 1, (posend - posmid));
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slopetag = std::stod(strslope.c_str());
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return true;
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}
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}
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}
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return false;
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}
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Glib::ustring get_profile_description(cmsHPROFILE profile)
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{
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const cmsMLU *mlu = static_cast<const cmsMLU *>(cmsReadTag(profile, cmsSigProfileDescriptionTag));
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if (!mlu) {
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return "";
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}
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cmsUInt32Number sz = cmsMLUgetASCII(mlu, "en", "US", nullptr, 0);
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if (!sz) {
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return "";
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}
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std::vector<char> buf(sz);
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cmsMLUgetASCII(mlu, "en", "US", &buf[0], sz);
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buf.back() = 0; // sanity
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return std::string(&buf[0]);
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}
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} // namespace
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rtengine::ProfileContent::ProfileContent() = default;
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rtengine::ProfileContent::ProfileContent(const Glib::ustring& fileName)
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@ -255,11 +334,52 @@ rtengine::ProfileContent::ProfileContent(cmsHPROFILE hProfile)
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cmsHPROFILE rtengine::ProfileContent::toProfile() const
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{
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cmsHPROFILE profile = nullptr;
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if (!data.empty()) {
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profile = cmsOpenProfileFromMem(data.c_str(), data.size());
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// if this is a V2 profile generated by RawTherapee, we rebuild the
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// TRC. See https://github.com/Beep6581/RawTherapee/issues/5026 and
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// the references in there
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if (profile && is_RTv2_profile(profile)) {
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double gammatag, slopetag;
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if (get_RT_gamma_slope(profile, gammatag, slopetag)) {
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constexpr double eps = 0.000000001; // not divide by zero
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double pwr = 1.0 / gammatag;
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double ts = slopetag;
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double slope = slopetag == 0 ? eps : slopetag;
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return
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!data.empty()
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? cmsOpenProfileFromMem(data.c_str(), data.size())
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: nullptr;
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GammaValues g_b; //gamma parameters
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Color::calcGamma(pwr, ts, 0, g_b); // call to calcGamma with selected gamma and slope : return parameters for LCMS2
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cmsFloat64Number gammaParams[7]; //gamma parameters
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gammaParams[4] = g_b[3] * ts;
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gammaParams[0] = gammatag;
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gammaParams[1] = 1. / (1.0 + g_b[4]);
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gammaParams[2] = g_b[4] / (1.0 + g_b[4]);
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gammaParams[3] = 1. / slope;
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gammaParams[5] = 0.0;
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gammaParams[6] = 0.0;
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cmsToneCurve* GammaTRC;
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if (slopetag == 0.) {
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//printf("gammatag=%f\n", gammatag);
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GammaTRC = cmsBuildGamma(NULL, gammatag);
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} else {
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GammaTRC = cmsBuildParametricToneCurve(nullptr, 5, gammaParams); //5 = smoother than 4
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}
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cmsWriteTag(profile, cmsSigRedTRCTag, GammaTRC);
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cmsWriteTag(profile, cmsSigGreenTRCTag, GammaTRC);
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cmsWriteTag(profile, cmsSigBlueTRCTag, GammaTRC);
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cmsFreeToneCurve(GammaTRC);
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if (settings->verbose) {
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std::cout << "ICCStore: rebuilt TRC for RTv2 profile " << get_profile_description(profile) << ": gamma=" << gammatag << ", slope=" << slopetag << std::endl;
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}
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} else if (settings->verbose) {
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std::cout << "ICCStore: no gamma/slope info found for RTv2 profile " << get_profile_description(profile) << std::endl;
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}
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}
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}
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return profile;
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}
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const std::string& rtengine::ProfileContent::getData() const
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@ -303,82 +303,7 @@ Imagefloat* ImProcFunctions::lab2rgbOut(LabImage* lab, int cx, int cy, int cw, i
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}
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Imagefloat* image = new Imagefloat(cw, ch);
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cmsHPROFILE oprof = nullptr;
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oprof = ICCStore::getInstance()->getProfile(icm.outputProfile);
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Glib::ustring outtest = icm.outputProfile;
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std::string fileis_RTv2 = outtest.substr(0, 4);
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//printf("IsRTv2=%s\n", fileis_RTv2.c_str());
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if(fileis_RTv2 == "RTv2") {//Only fot ICC v2 : read tag from desc to retrieve gamma and slope save before in generate ICC v2
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//due to bug in LCMS in CmsToneCurve
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//printf("icmout=%s \n",icm.output.c_str());
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GammaValues g_b; //gamma parameters
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const double eps = 0.000000001; // not divide by zero
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double gammatag = 2.4;
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double slopetag = 12.92310;
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cmsMLU *modelDescMLU = (cmsMLU*) (cmsReadTag(oprof, cmsSigDeviceModelDescTag));
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if (modelDescMLU) {
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cmsUInt32Number count = cmsMLUgetWide(modelDescMLU, "en", "US", nullptr, 0); // get buffer length first
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if (count) {
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wchar_t *buffer = new wchar_t[count];
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count = cmsMLUgetWide(modelDescMLU, "en", "US", buffer, count); // now put the string in the buffer
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Glib::ustring modelDesc;
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#if __SIZEOF_WCHAR_T__ == 2
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char* cModelDesc = g_utf16_to_utf8((unsigned short int*)buffer, -1, nullptr, nullptr, nullptr); // convert to utf-8 in a buffer allocated by glib
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if (cModelDesc) {
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modelDesc.assign(cModelDesc);
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g_free(cModelDesc);
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}
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#else
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modelDesc = utf32_to_utf8(buffer, count);
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#endif
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delete [] buffer;
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if (!modelDesc.empty()) {
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std::size_t pos = modelDesc.find("g");
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std::size_t posmid = modelDesc.find("s");
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std::size_t posend = modelDesc.find("!");
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std::string strgamma = modelDesc.substr(pos + 1, (posmid - pos));
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gammatag = std::stod(strgamma.c_str());
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std::string strslope = modelDesc.substr(posmid + 1, (posend - posmid));
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slopetag = std::stod(strslope.c_str());
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// printf("gam=%f slo=%f\n", gammatag, slopetag);
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}
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} else {
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printf("Error: lab2rgbOut / String length is null!\n");
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}
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} else {
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printf("Error: lab2rgbOut / cmsReadTag/cmsSigDeviceModelDescTag failed!\n");
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}
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double pwr = 1.0 / gammatag;
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double ts = slopetag;
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double slope = slopetag == 0 ? eps : slopetag;
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int mode = 0;
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Color::calcGamma(pwr, ts, mode, g_b); // call to calcGamma with selected gamma and slope : return parameters for LCMS2
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cmsFloat64Number gammaParams[7]; //gamma parameters
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gammaParams[4] = g_b[3] * ts;
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gammaParams[0] = gammatag;
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gammaParams[1] = 1. / (1.0 + g_b[4]);
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gammaParams[2] = g_b[4] / (1.0 + g_b[4]);
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gammaParams[3] = 1. / slope;
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gammaParams[5] = 0.0;
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gammaParams[6] = 0.0;
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cmsToneCurve* GammaTRC[3];
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if(slopetag == 0.) {
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//printf("gammatag=%f\n", gammatag);
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GammaTRC[0] = GammaTRC[1] = GammaTRC[2] = cmsBuildGamma(NULL, gammatag);
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}
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else {
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GammaTRC[0] = GammaTRC[1] = GammaTRC[2] = cmsBuildParametricToneCurve(nullptr, 5, gammaParams); //5 = smoother than 4
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}
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cmsWriteTag(oprof, cmsSigRedTRCTag, GammaTRC[0]);
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cmsWriteTag(oprof, cmsSigGreenTRCTag, GammaTRC[1]);
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cmsWriteTag(oprof, cmsSigBlueTRCTag, GammaTRC[2]);
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cmsFreeToneCurve(GammaTRC[0]);
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}
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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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