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/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/


#include "sclcms2colorprofileimpl.h"
#include "sclcms2colormgmtengineimpl.h"
#include <cstdlib>

ScLcms2ColorProfileImpl::ScLcms2ColorProfileImpl(ScColorMgmtEngine& engine, cmsHPROFILE lcmsProfile)
        : ScColorProfileImplBase(engine), m_profileHandle(lcmsProfile)
{

}

ScLcms2ColorProfileImpl::~ScLcms2ColorProfileImpl()
{
        closeProfile();
}

bool ScLcms2ColorProfileImpl::isNull() const
{
        return (m_profileHandle == nullptr);
}

eColorSpaceType ScLcms2ColorProfileImpl::colorSpace()  const
{
        if (m_profileHandle)
                return ScLcms2ColorMgmtEngineImpl::translateLcmsColorSpaceType( cmsGetColorSpace(m_profileHandle) );
        return ColorSpace_Unknown;
}

eColorSpaceType ScLcms2ColorProfileImpl::connectionSpace()  const
{
        if (m_profileHandle)
                return ScLcms2ColorMgmtEngineImpl::translateLcmsColorSpaceType( cmsGetPCS(m_profileHandle) );
        return ColorSpace_Unknown;
}

eProfileClass ScLcms2ColorProfileImpl::deviceClass() const
{
        if (m_profileHandle)
                return ScLcms2ColorMgmtEngineImpl::translateLcmsProfileClass( cmsGetDeviceClass(m_profileHandle) );
        return Class_Unknown;
}

int ScLcms2ColorProfileImpl::channelsOfColorSpace() const
{
        if (m_profileHandle)
        {
                eColorSpaceType colorspace = ScLcms2ColorMgmtEngineImpl::translateLcmsColorSpaceType( cmsGetColorSpace(m_profileHandle) );
                return ScLcms2ColorMgmtEngineImpl::channelsOfColorspace(colorspace);
        }
        return 0;
}

int ScLcms2ColorProfileImpl::channelsOfConnectionSpace() const
{
        if (m_profileHandle)
        {
                eColorSpaceType colorspace = ScLcms2ColorMgmtEngineImpl::translateLcmsColorSpaceType( cmsGetPCS(m_profileHandle) );
                return ScLcms2ColorMgmtEngineImpl::channelsOfColorspace(colorspace);
        }
        return 0;
}

bool ScLcms2ColorProfileImpl::isSuitableForOutput() const
{
        if (!m_profileHandle)
                return false;

        if (cmsIsMatrixShaper(m_profileHandle))
                return true;

        cmsUInt32Number defaultIntent = cmsGetHeaderRenderingIntent(m_profileHandle);
        return (cmsIsCLUT(m_profileHandle, defaultIntent, LCMS_USED_AS_INPUT) &&
                        cmsIsCLUT(m_profileHandle, defaultIntent, LCMS_USED_AS_OUTPUT));
}

QString ScLcms2ColorProfileImpl::productDescription() const
{
        if (!m_productDescription.isEmpty())
                return m_productDescription;

        if (m_profileHandle == nullptr)
                return QString();

#ifdef _WIN32
        cmsUInt32Number descSize = cmsGetProfileInfo(m_profileHandle, cmsInfoDescription, "en", "US", nullptr, 0);
        if (descSize > 0)
        {
                wchar_t* descData = (wchar_t*) malloc(descSize + sizeof(wchar_t));
                if (descData)
                        descSize = cmsGetProfileInfo(m_profileHandle, cmsInfoDescription, "en", "US", descData, descSize);
                if (descData && (descSize > 0))
                {
                        uint stringLen = descSize / sizeof(wchar_t);
                        descData[stringLen] = 0;
                        m_productDescription = QString::fromWCharArray(descData);
                }
                free(descData);
        }
#else
        cmsUInt32Number descSize = cmsGetProfileInfoASCII(m_profileHandle, cmsInfoDescription, "en", "US", nullptr, 0);
        if (descSize > 0)
        {
                char* descData = (char*) malloc(descSize + sizeof(char));
                if (descData)
                        descSize = cmsGetProfileInfoASCII(m_profileHandle, cmsInfoDescription, "en", "US", descData, descSize);
                if (descData && (descSize > 0))
                        m_productDescription = QString(descData);
                free(descData);
        }
#endif

        return m_productDescription;
}

void ScLcms2ColorProfileImpl::closeProfile()
{
        if (m_profileHandle)
        {
                cmsCloseProfile(m_profileHandle);
                m_profileHandle = nullptr;
        }
}

bool ScLcms2ColorProfileImpl::save(QByteArray& profileData) const
{
        if (!m_profileHandle)
                return false;
        profileData.clear();

        // First retrieve profile size
        cmsUInt32Number bytesNeeded = 0;
        bool done = cmsSaveProfileToMem(m_profileHandle, nullptr, &bytesNeeded);
        if (!done)
                return false;

        // Allocate array for profile data
        profileData.resize(bytesNeeded);
        if (profileData.size() != static_cast<int>(bytesNeeded))
                return false;
        done = cmsSaveProfileToMem(m_profileHandle, profileData.data(), &bytesNeeded);

        return done;
}