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https://github.com/JakubMelka/PDF4QT.git
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Color management (without icc color spaces)
This commit is contained in:
Jakub Melka
parent
70daaac841
commit
189836d76c
@ -18,15 +18,467 @@
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#include "pdfcms.h"
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#include <QApplication>
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#include <QReadWriteLock>
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#pragma warning(push)
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#pragma warning(disable:5033)
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#include <lcms2.h>
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#pragma warning(pop)
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#include <unordered_map>
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namespace pdf
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{
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class PDFLittleCMS : public PDFCMS
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{
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public:
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explicit PDFLittleCMS(const PDFCMSManager* manager, const PDFCMSSettings& settings);
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virtual ~PDFLittleCMS() override;
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virtual bool isCompatible(const PDFCMSSettings& settings) const override;
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virtual QColor getPaperColor() const override;
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virtual QColor getColorFromDeviceGray(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const override;
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virtual QColor getColorFromDeviceRGB(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const override;
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virtual QColor getColorFromDeviceCMYK(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const override;
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virtual QColor getColorFromXYZ(const PDFColor3& whitePoint, const PDFColor3& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const override;
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virtual QColor getColorFromICC(const PDFColor& color, const QByteArray& iccID, const QByteArray& iccData) const override;
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private:
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void init();
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enum Profile
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{
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Output,
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Gray,
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RGB,
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CMYK,
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XYZ,
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ProfileCount
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};
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/// Creates a profile using provided id and a list of profile descriptors.
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/// If profile can't be created, then null handle is returned.
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/// \param id Id of color profile
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/// \param profileDescriptors Profile descriptor list
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cmsHPROFILE createProfile(const QString& id, const PDFColorProfileIdentifiers& profileDescriptors) const;
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/// Gets transform from cache. If transform doesn't exist, then it is created.
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/// \param profile Color profile
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/// \param intent Rendering intent
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cmsHTRANSFORM getTransform(Profile profile, RenderingIntent intent) const;
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/// Returns transformation flags accordint to the current settings
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cmsUInt32Number getTransformationFlags() const;
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/// Calculates effective rendering intent. If rendering intent is auto,
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/// then \p intent is used, otherwise intent is overriden.
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RenderingIntent getEffectiveRenderingIntent(RenderingIntent intent) const;
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/// Gets transform from cache key.
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/// \param profile Color profile
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/// \param intent Rendering intent
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static constexpr int getCacheKey(Profile profile, RenderingIntent intent) { return int(intent) * ProfileCount + profile; }
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/// Returns little CMS rendering intent
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/// \param intent Rendering intent
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static cmsUInt32Number getLittleCMSRenderingIntent(RenderingIntent intent);
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/// Returns little CMS data format for profile
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/// \param profile Color profile handle
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static cmsUInt32Number getProfileDataFormat(cmsHPROFILE profile);
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/// Returns color from output color. Clamps invalid rgb output values to range [0.0, 1.0].
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/// \param color01 Rgb color (range 0-1 is assumed).
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static QColor getColorFromOutputColor(std::array<float, 3> color01);
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const PDFCMSManager* m_manager;
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PDFCMSSettings m_settings;
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QColor m_paperColor;
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std::array<cmsHPROFILE, ProfileCount> m_profiles;
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mutable QReadWriteLock m_transformationCacheLock;
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mutable std::unordered_map<int, cmsHTRANSFORM> m_transformationCache;
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};
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PDFLittleCMS::PDFLittleCMS(const PDFCMSManager* manager, const PDFCMSSettings& settings) :
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m_manager(manager),
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m_settings(settings),
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m_paperColor(Qt::white),
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m_profiles()
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{
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init();
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}
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PDFLittleCMS::~PDFLittleCMS()
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{
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for (const auto& transformItem : m_transformationCache)
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{
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cmsHTRANSFORM transform = transformItem.second;
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if (transform)
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{
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cmsDeleteTransform(transform);
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}
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}
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for (cmsHPROFILE profile : m_profiles)
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{
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if (profile)
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{
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cmsCloseProfile(profile);
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}
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}
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}
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bool PDFLittleCMS::isCompatible(const PDFCMSSettings& settings) const
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{
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return m_settings == settings;
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}
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QColor PDFLittleCMS::getPaperColor() const
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{
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return m_paperColor;
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}
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QColor PDFLittleCMS::getColorFromDeviceGray(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
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{
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cmsHTRANSFORM transform = getTransform(Gray, getEffectiveRenderingIntent(intent));
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if (!transform)
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{
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reporter->reportRenderErrorOnce(RenderErrorType::Error, PDFTranslationContext::tr("Conversion from gray to output device using CMS failed."));
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return QColor();
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}
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if (cmsGetTransformInputFormat(transform) == TYPE_GRAY_FLT && color.size() == 1)
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{
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Q_ASSERT(cmsGetTransformOutputFormat(transform) == TYPE_RGB_FLT);
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const float grayColor = color[0];
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std::array<float, 3> rgbOutputColor = { };
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cmsDoTransform(transform, &grayColor, rgbOutputColor.data(), 1);
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return getColorFromOutputColor(rgbOutputColor);
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}
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else
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{
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reporter->reportRenderErrorOnce(RenderErrorType::Error, PDFTranslationContext::tr("Conversion from gray to output device using CMS failed - invalid data format."));
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}
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return QColor();
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}
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QColor PDFLittleCMS::getColorFromDeviceRGB(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
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{
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cmsHTRANSFORM transform = getTransform(RGB, getEffectiveRenderingIntent(intent));
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if (!transform)
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{
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reporter->reportRenderErrorOnce(RenderErrorType::Error, PDFTranslationContext::tr("Conversion from RGB to output device using CMS failed."));
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return QColor();
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}
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if (cmsGetTransformInputFormat(transform) == TYPE_RGB_FLT && color.size() == 3)
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{
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Q_ASSERT(cmsGetTransformOutputFormat(transform) == TYPE_RGB_FLT);
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std::array<float, 3> rgbInputColor = { color[0], color[1], color[2] };
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std::array<float, 3> rgbOutputColor = { };
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cmsDoTransform(transform, rgbInputColor.data(), rgbOutputColor.data(), 1);
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return getColorFromOutputColor(rgbOutputColor);
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}
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else
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{
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reporter->reportRenderErrorOnce(RenderErrorType::Error, PDFTranslationContext::tr("Conversion from RGB to output device using CMS failed - invalid data format."));
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}
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return QColor();
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}
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QColor PDFLittleCMS::getColorFromDeviceCMYK(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
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{
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cmsHTRANSFORM transform = getTransform(CMYK, getEffectiveRenderingIntent(intent));
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if (!transform)
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{
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reporter->reportRenderErrorOnce(RenderErrorType::Error, PDFTranslationContext::tr("Conversion from CMYK to output device using CMS failed."));
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return QColor();
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}
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if (cmsGetTransformInputFormat(transform) == TYPE_CMYK_FLT && color.size() == 4)
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{
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Q_ASSERT(cmsGetTransformOutputFormat(transform) == TYPE_RGB_FLT);
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std::array<float, 4> cmykInputColor = { color[0] * 100.0f, color[1] * 100.0f, color[2] * 100.0f, color[3] * 100.0f };
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std::array<float, 3> rgbOutputColor = { };
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cmsDoTransform(transform, cmykInputColor.data(), rgbOutputColor.data(), 1);
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return getColorFromOutputColor(rgbOutputColor);
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}
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else
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{
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reporter->reportRenderErrorOnce(RenderErrorType::Error, PDFTranslationContext::tr("Conversion from CMYK to output device using CMS failed - invalid data format."));
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}
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return QColor();
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}
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QColor PDFLittleCMS::getColorFromXYZ(const PDFColor3& whitePoint, const PDFColor3& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
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{
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cmsHTRANSFORM transform = getTransform(XYZ, getEffectiveRenderingIntent(intent));
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if (!transform)
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{
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reporter->reportRenderErrorOnce(RenderErrorType::Error, PDFTranslationContext::tr("Conversion from XYZ to output device using CMS failed."));
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return QColor();
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}
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if (cmsGetTransformInputFormat(transform) == TYPE_XYZ_FLT && color.size() == 3)
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{
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Q_ASSERT(cmsGetTransformOutputFormat(transform) == TYPE_RGB_FLT);
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const cmsCIEXYZ* d50WhitePoint = cmsD50_XYZ();
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std::array<float, 3> xyzInputColor = { color[0] / whitePoint[0] * float(d50WhitePoint->X), color[1] / whitePoint[1] * float(d50WhitePoint->Y), color[2] / whitePoint[2] * float(d50WhitePoint->Z) };
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std::array<float, 3> rgbOutputColor = { };
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cmsDoTransform(transform, xyzInputColor.data(), rgbOutputColor.data(), 1);
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return getColorFromOutputColor(rgbOutputColor);
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}
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else
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{
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reporter->reportRenderErrorOnce(RenderErrorType::Error, PDFTranslationContext::tr("Conversion from XYZ to output device using CMS failed - invalid data format."));
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}
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return QColor();
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}
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QColor PDFLittleCMS::getColorFromICC(const PDFColor& color, const QByteArray& iccID, const QByteArray& iccData) const
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{
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// TODO: Dodelat ICC profily
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return QColor();
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}
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void PDFLittleCMS::init()
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{
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// Jakub Melka: initialize all color profiles
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m_profiles[Output] = createProfile(m_settings.outputCS, m_manager->getOutputProfiles());
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m_profiles[Gray] = createProfile(m_settings.deviceGray, m_manager->getGrayProfiles());
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m_profiles[RGB] = createProfile(m_settings.deviceRGB, m_manager->getRGBProfiles());
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m_profiles[CMYK] = createProfile(m_settings.deviceCMYK, m_manager->getCMYKProfiles());
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m_profiles[XYZ] = cmsCreateXYZProfile();
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if (m_settings.isWhitePaperColorTransformed)
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{
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m_paperColor = getColorFromDeviceRGB(PDFColor(1.0f, 1.0f, 1.0f), RenderingIntent::AbsoluteColorimetric, nullptr);
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// We must check color of the paper, it can be invalid, if error occurs...
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if (!m_paperColor.isValid())
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{
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m_paperColor = QColor(Qt::white);
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}
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}
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// 64 should be enough, because we can have 4 input color spaces (gray, RGB, CMYK and XYZ),
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// and 4 rendering intents. We have 4 * 4 = 16 input tables, so 64 will suffice enough
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// (because we then have 25% load factor).
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m_transformationCache.reserve(64);
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}
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cmsHPROFILE PDFLittleCMS::createProfile(const QString& id, const PDFColorProfileIdentifiers& profileDescriptors) const
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{
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auto it = std::find_if(profileDescriptors.cbegin(), profileDescriptors.cend(), [&id](const PDFColorProfileIdentifier& identifier) { return identifier.id == id; });
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if (it != profileDescriptors.cend())
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{
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const PDFColorProfileIdentifier& identifier = *it;
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switch (identifier.type)
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{
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case PDFColorProfileIdentifier::Type::Gray:
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{
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cmsCIExyY whitePoint{ };
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if (cmsWhitePointFromTemp(&whitePoint, identifier.temperature))
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{
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cmsToneCurve* gammaCurve = cmsBuildGamma(cmsContext(), identifier.gamma);
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cmsHPROFILE profile = cmsCreateGrayProfile(&whitePoint, gammaCurve);
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cmsFreeToneCurve(gammaCurve);
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return profile;
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}
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break;
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}
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case PDFColorProfileIdentifier::Type::sRGB:
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return cmsCreate_sRGBProfile();
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case PDFColorProfileIdentifier::Type::RGB:
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{
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cmsCIExyY whitePoint{ };
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if (cmsWhitePointFromTemp(&whitePoint, identifier.temperature))
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{
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cmsCIExyYTRIPLE primaries;
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primaries.Red = { identifier.primaryR.x(), identifier.primaryR.y(), 1.0 };
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primaries.Green = { identifier.primaryG.x(), identifier.primaryG.y(), 1.0 };
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primaries.Blue = { identifier.primaryB.x(), identifier.primaryB.y(), 1.0 };
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cmsToneCurve* gammaCurve = cmsBuildGamma(cmsContext(), identifier.gamma);
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cmsToneCurve* toneCurves[3] = { gammaCurve, cmsDupToneCurve(gammaCurve), cmsDupToneCurve(gammaCurve) };
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cmsHPROFILE profile = cmsCreateRGBProfile(&whitePoint, &primaries, toneCurves);
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cmsFreeToneCurveTriple(toneCurves);
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return profile;
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}
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break;
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}
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case PDFColorProfileIdentifier::Type::FileGray:
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case PDFColorProfileIdentifier::Type::FileRGB:
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case PDFColorProfileIdentifier::Type::FileCMYK:
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{
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QFile file(identifier.id);
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if (file.open(QFile::ReadOnly))
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{
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QByteArray fileContent = file.readAll();
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file.close();
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return cmsOpenProfileFromMem(fileContent.data(), fileContent.size());
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}
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break;
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}
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default:
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Q_ASSERT(false);
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break;
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}
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}
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return cmsHPROFILE();
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}
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cmsHTRANSFORM PDFLittleCMS::getTransform(Profile profile, RenderingIntent intent) const
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{
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const int key = getCacheKey(profile, intent);
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QReadLocker lock(&m_transformationCacheLock);
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auto it = m_transformationCache.find(key);
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if (it == m_transformationCache.cend())
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{
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lock.unlock();
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QWriteLocker writeLock(&m_transformationCacheLock);
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// Now, we have locked cache for writing. We must find out,
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// if some other thread doesn't created the transformation already.
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it = m_transformationCache.find(key);
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if (it == m_transformationCache.cend())
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{
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cmsHTRANSFORM transform = cmsHTRANSFORM();
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cmsHPROFILE input = m_profiles[profile];
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cmsHPROFILE output = m_profiles[Output];
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if (input && output)
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{
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transform = cmsCreateTransform(input, getProfileDataFormat(input), output, TYPE_RGB_FLT, getLittleCMSRenderingIntent(intent), getTransformationFlags());
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}
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it = m_transformationCache.insert(std::make_pair(key, transform)).first;
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}
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// We must return it here to avoid race condition (after current block,
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// lock is not locked, because we unlocked lock for reading).
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return it->second;
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}
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return it->second;
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}
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cmsUInt32Number PDFLittleCMS::getTransformationFlags() const
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{
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cmsUInt32Number flags = cmsFLAGS_NOCACHE;
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if (m_settings.isBlackPointCompensationActive)
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{
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flags |= cmsFLAGS_BLACKPOINTCOMPENSATION;
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}
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switch (m_settings.accuracy)
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{
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case PDFCMSSettings::Accuracy::Low:
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flags |= cmsFLAGS_LOWRESPRECALC;
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break;
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case PDFCMSSettings::Accuracy::Medium:
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break;
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case PDFCMSSettings::Accuracy::High:
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flags |= cmsFLAGS_HIGHRESPRECALC;
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break;
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default:
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Q_ASSERT(false);
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break;
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}
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return flags;
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}
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RenderingIntent PDFLittleCMS::getEffectiveRenderingIntent(RenderingIntent intent) const
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{
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if (m_settings.intent != RenderingIntent::Auto)
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{
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return m_settings.intent;
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}
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return intent;
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}
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cmsUInt32Number PDFLittleCMS::getLittleCMSRenderingIntent(RenderingIntent intent)
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{
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switch (intent)
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{
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case RenderingIntent::Perceptual:
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return INTENT_PERCEPTUAL;
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case RenderingIntent::AbsoluteColorimetric:
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return INTENT_ABSOLUTE_COLORIMETRIC;
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case RenderingIntent::RelativeColorimetric:
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return INTENT_RELATIVE_COLORIMETRIC;
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case RenderingIntent::Saturation:
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return INTENT_SATURATION;
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default:
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Q_ASSERT(false);
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break;
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}
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return INTENT_PERCEPTUAL;
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}
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cmsUInt32Number PDFLittleCMS::getProfileDataFormat(cmsHPROFILE profile)
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{
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cmsColorSpaceSignature signature = cmsGetColorSpace(profile);
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switch (signature)
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{
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case cmsSigGrayData:
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return TYPE_GRAY_FLT;
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case cmsSigRgbData:
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return TYPE_RGB_FLT;
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case cmsSigCmykData:
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return TYPE_CMYK_FLT;
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case cmsSigXYZData:
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return TYPE_XYZ_FLT;
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default:
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break;
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}
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Q_ASSERT(false);
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return 0;
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}
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QColor PDFLittleCMS::getColorFromOutputColor(std::array<float, 3> color01)
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{
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QColor color(QColor::Rgb);
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color.setRgbF(qBound(0.0f, color01[0], 1.0f), qBound(0.0f, color01[1], 1.0f), qBound(0.0f, color01[2], 1.0f));
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return color;
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}
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QString getInfoFromProfile(cmsHPROFILE profile, cmsInfoType infoType)
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{
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QLocale locale;
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@ -119,7 +571,8 @@ QColor PDFCMSGeneric::getColorFromICC(const PDFColor& color, const QByteArray& i
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}
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PDFCMSManager::PDFCMSManager(QObject* parent) :
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BaseClass(parent)
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BaseClass(parent),
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m_mutex(QMutex::Recursive)
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||||
{
|
||||
|
||||
}
|
||||
@ -230,6 +683,19 @@ QString PDFCMSManager::getSystemName(PDFCMSSettings::System system)
|
||||
|
||||
PDFCMSPointer PDFCMSManager::getCurrentCMSImpl() const
|
||||
{
|
||||
switch (m_settings.system)
|
||||
{
|
||||
case PDFCMSSettings::System::Generic:
|
||||
return PDFCMSPointer(new PDFCMSGeneric());
|
||||
|
||||
case PDFCMSSettings::System::LittleCMS2:
|
||||
return PDFCMSPointer(new PDFLittleCMS(this, m_settings));
|
||||
|
||||
default:
|
||||
Q_ASSERT(false);
|
||||
break;
|
||||
}
|
||||
|
||||
return PDFCMSPointer(new PDFCMSGeneric());
|
||||
}
|
||||
|
||||
|
||||
@ -28,7 +28,6 @@ PDFAsynchronousPageCompiler::PDFAsynchronousPageCompiler(PDFDrawWidgetProxy* pro
|
||||
BaseClass(proxy),
|
||||
m_proxy(proxy)
|
||||
{
|
||||
// TODO: Create setting for this
|
||||
m_cache.setMaxCost(128 * 1024 * 1024);
|
||||
}
|
||||
|
||||
|
||||
@ -41,7 +41,6 @@ PDFRenderingErrorsWidget::PDFRenderingErrorsWidget(QWidget* parent, PDFWidget* p
|
||||
const PDFWidget::PageRenderingErrors* pageRenderingErrors = pdfWidget->getPageRenderingErrors();
|
||||
for (const auto& pageRenderingError : *pageRenderingErrors)
|
||||
{
|
||||
// TODO: udelat realna cisla stranek
|
||||
const PDFInteger pageIndex = pageRenderingError.first;
|
||||
QTreeWidgetItem* root = new QTreeWidgetItem(ui->renderErrorsTreeWidget, QStringList() << QString::number(pageIndex + 1) << QString() << QString());
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user