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Color management - custom icc profiles

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This commit is contained in:
Jakub Melka
2019-12-26 17:57:45 +01:00
parent 189836d76c
commit 0c7b0e6c3d
4 changed files with 102 additions and 8 deletions
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89
PdfForQtLib/sources/pdfcms.cpp
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@ -42,7 +42,7 @@ public:
virtual QColor getColorFromDeviceRGB(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const override;
virtual QColor getColorFromDeviceCMYK(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const override;
virtual QColor getColorFromXYZ(const PDFColor3& whitePoint, const PDFColor3& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const override;
virtual QColor getColorFromICC(const PDFColor& color, const QByteArray& iccID, const QByteArray& iccData) const override;
virtual QColor getColorFromICC(const PDFColor& color, RenderingIntent renderingIntent, const QByteArray& iccID, const QByteArray& iccData, PDFRenderErrorReporter* reporter) const override;
private:
void init();
@ -99,6 +99,9 @@ private:
mutable QReadWriteLock m_transformationCacheLock;
mutable std::unordered_map<int, cmsHTRANSFORM> m_transformationCache;
mutable QReadWriteLock m_customIccProfileCacheLock;
mutable std::map<std::pair<QByteArray, RenderingIntent>, cmsHTRANSFORM> m_customIccProfileCache;
};
PDFLittleCMS::PDFLittleCMS(const PDFCMSManager* manager, const PDFCMSSettings& settings) :
@ -121,6 +124,15 @@ PDFLittleCMS::~PDFLittleCMS()
}
}
for (const auto& transformItem : m_customIccProfileCache)
{
cmsHTRANSFORM transform = transformItem.second;
if (transform)
{
cmsDeleteTransform(transform);
}
}
for (cmsHPROFILE profile : m_profiles)
{
if (profile)
@ -249,9 +261,71 @@ QColor PDFLittleCMS::getColorFromXYZ(const PDFColor3& whitePoint, const PDFColor
return QColor();
}
QColor PDFLittleCMS::getColorFromICC(const PDFColor& color, const QByteArray& iccID, const QByteArray& iccData) const
QColor PDFLittleCMS::getColorFromICC(const PDFColor& color, RenderingIntent renderingIntent, const QByteArray& iccID, const QByteArray& iccData, PDFRenderErrorReporter* reporter) const
{
// TODO: Dodelat ICC profily
cmsHTRANSFORM transform = cmsHTRANSFORM();
{
RenderingIntent effectiveRenderingIntent = getEffectiveRenderingIntent(renderingIntent);
const auto key = std::make_pair(iccID, effectiveRenderingIntent);
QReadLocker lock(&m_customIccProfileCacheLock);
auto it = m_customIccProfileCache.find(key);
if (it == m_customIccProfileCache.cend())
{
lock.unlock();
QWriteLocker writeLock(&m_customIccProfileCacheLock);
// Now, we have locked cache for writing. We must find out,
// if some other thread doesn't created the transformation already.
it = m_customIccProfileCache.find(key);
if (it == m_customIccProfileCache.cend())
{
cmsHPROFILE profile = cmsOpenProfileFromMem(iccData.data(), iccData.size());
if (profile)
{
if (const cmsUInt32Number inputDataFormat = getProfileDataFormat(profile))
{
cmsUInt32Number lcmsIntent = getLittleCMSRenderingIntent(effectiveRenderingIntent);
transform = cmsCreateTransform(profile, inputDataFormat, m_profiles[Output], TYPE_RGB_FLT, lcmsIntent, getTransformationFlags());
}
cmsCloseProfile(profile);
}
it = m_customIccProfileCache.insert(std::make_pair(key, transform)).first;
}
transform = it->second;
}
else
{
transform = it->second;
}
}
if (!transform)
{
reporter->reportRenderErrorOnce(RenderErrorType::Error, PDFTranslationContext::tr("Conversion from icc profile space to output device using CMS failed."));
return QColor();
}
std::array<float, 4> inputBuffer = { };
const cmsUInt32Number channels = T_CHANNELS(cmsGetTransformInputFormat(transform));
if (channels == color.size() && channels <= inputBuffer.size())
{
for (size_t i = 0; i < color.size(); ++i)
{
inputBuffer[i] = color[i];
}
std::array<float, 3> rgbOutputColor = { };
cmsDoTransform(transform, inputBuffer.data(), rgbOutputColor.data(), 1);
return getColorFromOutputColor(rgbOutputColor);
}
else
{
reporter->reportRenderErrorOnce(RenderErrorType::Error, PDFTranslationContext::tr("Conversion from icc profile space to output device using CMS failed - invalid data format."));
}
return QColor();
}
@ -468,7 +542,6 @@ cmsUInt32Number PDFLittleCMS::getProfileDataFormat(cmsHPROFILE profile)
break;
}
Q_ASSERT(false);
return 0;
}
@ -562,11 +635,17 @@ QColor PDFCMSGeneric::getColorFromXYZ(const PDFColor3& whitePoint, const PDFColo
return QColor();
}
QColor PDFCMSGeneric::getColorFromICC(const PDFColor& color, const QByteArray& iccID, const QByteArray& iccData) const
QColor PDFCMSGeneric::getColorFromICC(const PDFColor& color,
RenderingIntent renderingIntent,
const QByteArray& iccID,
const QByteArray& iccData,
PDFRenderErrorReporter* reporter) const
{
Q_UNUSED(color);
Q_UNUSED(renderingIntent);
Q_UNUSED(iccID);
Q_UNUSED(iccData);
Q_UNUSED(reporter);
return QColor();
}