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|
/* ============================================================
*
* This file is a part of digiKam project
* http://www.digikam.org
*
* Date : 2005-11-18
* Description : a class to apply ICC color correction to image.
*
* Copyright (C) 2005-2006 by F.J. Cruz <fj.cruz@supercable.es>
* Copyright (C) 2005-2007 by Gilles Caulier <caulier dot gilles at gmail dot com>
*
* This program is free software; you can redistribute it
* and/or modify it under the terms of the GNU General
* Public License as published by the Free Software Foundation;
* either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* ============================================================ */
#include <config.h>
// Qt includes.
#include <qstring.h>
#include <qcstring.h>
#include <qfile.h>
// KDE includes.
#include <kconfig.h>
#include <kapplication.h>
// Lcms includes.
#include LCMS_HEADER
#if LCMS_VERSION < 114
#define cmsTakeCopyright(profile) "Unknown"
#endif // LCMS_VERSION < 114
// Local includes.
#include "ddebug.h"
#include "icctransform.h"
namespace Digikam
{
class IccTransformPriv
{
public:
IccTransformPriv()
{
has_embedded_profile = false;
do_proof_profile = false;
}
bool do_proof_profile;
bool has_embedded_profile;
QByteArray embedded_profile;
QByteArray input_profile;
QByteArray output_profile;
QByteArray proof_profile;
};
IccTransform::IccTransform()
{
d = new IccTransformPriv;
cmsErrorAction(LCMS_ERROR_SHOW);
}
IccTransform::~IccTransform()
{
delete d;
}
bool IccTransform::hasInputProfile()
{
return !(d->input_profile.isEmpty());
}
bool IccTransform::hasOutputProfile()
{
return !(d->output_profile.isEmpty());
}
QByteArray IccTransform::embeddedProfile() const
{
return d->embedded_profile;
}
QByteArray IccTransform::inputProfile() const
{
return d->input_profile;
}
QByteArray IccTransform::outputProfile() const
{
return d->output_profile;
}
QByteArray IccTransform::proofProfile() const
{
return d->proof_profile;
}
void IccTransform::getTransformType(bool do_proof_profile)
{
if (do_proof_profile)
{
d->do_proof_profile = true;
}
else
{
d->do_proof_profile = false;
}
}
void IccTransform::getEmbeddedProfile(const DImg& image)
{
if (!image.getICCProfil().isNull())
{
d->embedded_profile = image.getICCProfil();
d->has_embedded_profile = true;
}
}
QString IccTransform::getProfileDescription(const QString& profile)
{
cmsHPROFILE _profile = cmsOpenProfileFromFile(QFile::encodeName(profile), "r");
QString _description = cmsTakeProductDesc(_profile);
cmsCloseProfile(_profile);
return _description;
}
int IccTransform::getRenderingIntent()
{
KConfig* config = kapp->config();
config->setGroup("Color Management");
return config->readNumEntry("RenderingIntent", 0);
}
bool IccTransform::getUseBPC()
{
KConfig* config = kapp->config();
config->setGroup("Color Management");
return config->readBoolEntry("BPCAlgorithm", false);
}
QByteArray IccTransform::loadICCProfilFile(const QString& filePath)
{
QFile file(filePath);
if ( !file.open(IO_ReadOnly) )
return QByteArray();
QByteArray data(file.size());
QDataStream stream( &file );
stream.readRawBytes(data.data(), data.size());
file.close();
return data;
}
void IccTransform::setProfiles(const QString& input_profile, const QString& output_profile)
{
d->input_profile = loadICCProfilFile(input_profile);
d->output_profile = loadICCProfilFile(output_profile);
}
void IccTransform::setProfiles(const QString& input_profile, const QString& output_profile,
const QString& proof_profile)
{
d->input_profile = loadICCProfilFile(input_profile);
d->output_profile = loadICCProfilFile(output_profile);
d->proof_profile = loadICCProfilFile(proof_profile);
}
void IccTransform::setProfiles(const QString& output_profile)
{
d->output_profile = loadICCProfilFile(output_profile);
}
void IccTransform::setProfiles(const QString& output_profile, const QString& proof_profile, bool forProof)
{
if (forProof)
{
d->output_profile = loadICCProfilFile(output_profile);
d->proof_profile = loadICCProfilFile(proof_profile);
}
}
QString IccTransform::getEmbeddedProfileDescriptor()
{
if (d->embedded_profile.isEmpty())
return QString();
cmsHPROFILE tmpProfile = cmsOpenProfileFromMem(d->embedded_profile.data(),
(DWORD)d->embedded_profile.size());
QString embeddedProfileDescriptor = QString(cmsTakeProductDesc(tmpProfile));
cmsCloseProfile(tmpProfile);
return embeddedProfileDescriptor;
}
QString IccTransform::getInputProfileDescriptor()
{
if (d->input_profile.isEmpty()) return QString();
cmsHPROFILE tmpProfile = cmsOpenProfileFromMem(d->input_profile.data(), (DWORD)d->input_profile.size());
QString embeddedProfileDescriptor = QString(cmsTakeProductDesc(tmpProfile));
cmsCloseProfile(tmpProfile);
return embeddedProfileDescriptor;
}
QString IccTransform::getOutpoutProfileDescriptor()
{
if (d->output_profile.isEmpty()) return QString();
cmsHPROFILE tmpProfile = cmsOpenProfileFromMem(d->output_profile.data(), (DWORD)d->output_profile.size());
QString embeddedProfileDescriptor = QString(cmsTakeProductDesc(tmpProfile));
cmsCloseProfile(tmpProfile);
return embeddedProfileDescriptor;
}
QString IccTransform::getProofProfileDescriptor()
{
if (d->proof_profile.isEmpty()) return QString();
cmsHPROFILE tmpProfile = cmsOpenProfileFromMem(d->proof_profile.data(), (DWORD)d->proof_profile.size());
QString embeddedProfileDescriptor = QString(cmsTakeProductDesc(tmpProfile));
cmsCloseProfile(tmpProfile);
return embeddedProfileDescriptor;
}
bool IccTransform::apply(DImg& image)
{
cmsHPROFILE inprofile=0, outprofile=0, proofprofile=0;
cmsHTRANSFORM transform;
int inputFormat = 0;
int intent = INTENT_PERCEPTUAL;
switch (getRenderingIntent())
{
case 0:
intent = INTENT_PERCEPTUAL;
break;
case 1:
intent = INTENT_RELATIVE_COLORIMETRIC;
break;
case 2:
intent = INTENT_SATURATION;
break;
case 3:
intent = INTENT_ABSOLUTE_COLORIMETRIC;
break;
}
//DDebug() << "Intent is: " << intent << endl;
if (d->has_embedded_profile)
{
inprofile = cmsOpenProfileFromMem(d->embedded_profile.data(),
(DWORD)d->embedded_profile.size());
}
else
{
inprofile = cmsOpenProfileFromMem(d->input_profile.data(),
(DWORD)d->input_profile.size());
}
if (inprofile == NULL)
{
DDebug() << "Error: Input profile is NULL" << endl;
cmsCloseProfile(inprofile);
return false;
}
// if (d->has_embedded_profile)
// {
// outprofile = cmsOpenProfileFromMem(d->embedded_profile.data(),
// (DWORD)d->embedded_profile.size());
// }
// else
// {
outprofile = cmsOpenProfileFromMem(d->output_profile.data(),
(DWORD)d->output_profile.size());
// }
if (outprofile == NULL)
{
DDebug() << "Error: Output profile is NULL" << endl;
cmsCloseProfile(outprofile);
return false;
}
if (!d->do_proof_profile)
{
if (image.sixteenBit())
{
if (image.hasAlpha())
{
switch (cmsGetColorSpace(inprofile))
{
case icSigGrayData:
inputFormat = TYPE_GRAYA_16;
break;
case icSigCmykData:
inputFormat = TYPE_CMYK_16;
break;
default:
inputFormat = TYPE_BGRA_16;
}
transform = cmsCreateTransform( inprofile,
inputFormat,
outprofile,
TYPE_BGRA_16,
intent,
cmsFLAGS_WHITEBLACKCOMPENSATION);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
else
{
switch (cmsGetColorSpace(inprofile))
{
case icSigGrayData:
inputFormat = TYPE_GRAY_16;
break;
case icSigCmykData:
inputFormat = TYPE_CMYK_16;
break;
default:
inputFormat = TYPE_BGR_16;
}
transform = cmsCreateTransform( inprofile,
inputFormat,
outprofile,
TYPE_BGR_16,
intent,
cmsFLAGS_WHITEBLACKCOMPENSATION);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
}
else
{
if (image.hasAlpha())
{
switch (cmsGetColorSpace(inprofile))
{
case icSigGrayData:
inputFormat = TYPE_GRAYA_8;
break;
case icSigCmykData:
inputFormat = TYPE_CMYK_8;
break;
default:
inputFormat = TYPE_BGRA_8;
}
transform = cmsCreateTransform( inprofile,
inputFormat,
outprofile,
TYPE_BGRA_8,
intent,
cmsFLAGS_WHITEBLACKCOMPENSATION);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
else
{
switch (cmsGetColorSpace(inprofile))
{
case icSigGrayData:
inputFormat = TYPE_GRAYA_8;
break;
case icSigCmykData:
inputFormat = TYPE_CMYK_8;
//DDebug() << "input profile: cmyk no alpha" << endl;
break;
default:
inputFormat = TYPE_BGR_8;
//DDebug() << "input profile: default no alpha" << endl;
}
transform = cmsCreateTransform(inprofile, inputFormat, outprofile,
TYPE_BGR_8, intent,
cmsFLAGS_WHITEBLACKCOMPENSATION);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
}
}
else
{
proofprofile = cmsOpenProfileFromMem(d->proof_profile.data(),
(DWORD)d->proof_profile.size());
if (proofprofile == NULL)
{
DDebug() << "Error: Input profile is NULL" << endl;
cmsCloseProfile(inprofile);
cmsCloseProfile(outprofile);
return false;
}
if (image.sixteenBit())
{
if (image.hasAlpha())
{
transform = cmsCreateProofingTransform( inprofile,
TYPE_BGRA_16,
outprofile,
TYPE_BGRA_16,
proofprofile,
INTENT_ABSOLUTE_COLORIMETRIC,
INTENT_ABSOLUTE_COLORIMETRIC,
cmsFLAGS_WHITEBLACKCOMPENSATION);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
else
{
transform = cmsCreateProofingTransform( inprofile,
TYPE_BGR_16,
outprofile,
TYPE_BGR_16,
proofprofile,
INTENT_ABSOLUTE_COLORIMETRIC,
INTENT_ABSOLUTE_COLORIMETRIC,
cmsFLAGS_WHITEBLACKCOMPENSATION);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
}
else
{
if (image.hasAlpha())
{
transform = cmsCreateProofingTransform( inprofile,
TYPE_BGR_8,
outprofile,
TYPE_BGR_8,
proofprofile,
INTENT_ABSOLUTE_COLORIMETRIC,
INTENT_ABSOLUTE_COLORIMETRIC,
cmsFLAGS_WHITEBLACKCOMPENSATION);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
else
{
transform = cmsCreateProofingTransform( inprofile,
TYPE_BGR_8,
outprofile,
TYPE_BGR_8,
proofprofile,
INTENT_ABSOLUTE_COLORIMETRIC,
INTENT_ABSOLUTE_COLORIMETRIC,
cmsFLAGS_WHITEBLACKCOMPENSATION);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
}
}
// We need to work using temp pixel buffer to apply ICC transformations.
uchar transdata[image.bytesDepth()];
// Always working with uchar* prevent endianess problem.
uchar *data = image.bits();
// We scan all image pixels one by one.
for (uint i=0; i < image.width()*image.height()*image.bytesDepth(); i+=image.bytesDepth())
{
// Apply ICC transformations.
cmsDoTransform( transform, &data[i], &transdata[0], 1);
// Copy buffer to source to update original image with ICC corrections.
// Alpha channel is restored in all cases.
memcpy (&data[i], &transdata[0], (image.bytesDepth() == 8) ? 6 : 3);
}
cmsDeleteTransform(transform);
cmsCloseProfile(inprofile);
cmsCloseProfile(outprofile);
if (d->do_proof_profile)
cmsCloseProfile(proofprofile);
return true;
}
bool IccTransform::apply( DImg& image, QByteArray& profile, int intent, bool useBPC,
bool checkGamut, bool useBuiltin )
{
cmsHPROFILE inprofile=0, outprofile=0, proofprofile=0;
cmsHTRANSFORM transform;
int transformFlags = 0, inputFormat = 0;
switch (intent)
{
case 0:
intent = INTENT_PERCEPTUAL;
break;
case 1:
intent = INTENT_RELATIVE_COLORIMETRIC;
break;
case 2:
intent = INTENT_SATURATION;
break;
case 3:
intent = INTENT_ABSOLUTE_COLORIMETRIC;
break;
}
//DDebug() << "Intent is: " << intent << endl;
if (!profile.isNull())
{
inprofile = cmsOpenProfileFromMem(profile.data(),
(DWORD)profile.size());
}
else if (useBuiltin)
{
inprofile = cmsCreate_sRGBProfile();
}
else
{
inprofile = cmsOpenProfileFromMem(d->input_profile.data(),
(DWORD)d->input_profile.size());
}
if (inprofile == NULL)
{
DDebug() << "Error: Input profile is NULL" << endl;
return false;
}
outprofile = cmsOpenProfileFromMem(d->output_profile.data(),
(DWORD)d->output_profile.size());
if (outprofile == NULL)
{
DDebug() << "Error: Output profile is NULL" << endl;
cmsCloseProfile(inprofile);
return false;
}
if (useBPC)
{
transformFlags |= cmsFLAGS_WHITEBLACKCOMPENSATION;
}
if (!d->do_proof_profile)
{
if (image.sixteenBit())
{
if (image.hasAlpha())
{
switch (cmsGetColorSpace(inprofile))
{
case icSigGrayData:
inputFormat = TYPE_GRAYA_16;
break;
case icSigCmykData:
inputFormat = TYPE_CMYK_16;
break;
default:
inputFormat = TYPE_BGRA_16;
}
transform = cmsCreateTransform( inprofile,
inputFormat,
outprofile,
TYPE_BGRA_16,
intent,
transformFlags);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
else
{
switch (cmsGetColorSpace(inprofile))
{
case icSigGrayData:
inputFormat = TYPE_GRAY_16;
break;
case icSigCmykData:
inputFormat = TYPE_CMYK_16;
break;
default:
inputFormat = TYPE_BGR_16;
}
transform = cmsCreateTransform( inprofile,
inputFormat,
outprofile,
TYPE_BGR_16,
intent,
transformFlags);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
}
else
{
if (image.hasAlpha())
{
switch (cmsGetColorSpace(inprofile))
{
case icSigGrayData:
inputFormat = TYPE_GRAYA_8;
break;
case icSigCmykData:
inputFormat = TYPE_CMYK_8;
break;
default:
inputFormat = TYPE_BGRA_8;
}
transform = cmsCreateTransform( inprofile,
inputFormat,
outprofile,
TYPE_BGRA_8,
intent,
transformFlags);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
else
{
switch (cmsGetColorSpace(inprofile))
{
case icSigGrayData:
inputFormat = TYPE_GRAY_8;
break;
case icSigCmykData:
inputFormat = TYPE_CMYK_8;
break;
default:
inputFormat = TYPE_BGR_8;
}
transform = cmsCreateTransform( inprofile,
inputFormat,
outprofile,
TYPE_BGR_8,
intent,
transformFlags);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
}
}
else
{
proofprofile = cmsOpenProfileFromMem(d->proof_profile.data(),
(DWORD)d->proof_profile.size());
if (proofprofile == NULL)
{
DDebug() << "Error: Input profile is NULL" << endl;
cmsCloseProfile(inprofile);
cmsCloseProfile(outprofile);
return false;
}
transformFlags |= cmsFLAGS_SOFTPROOFING;
if (checkGamut)
{
cmsSetAlarmCodes(126, 255, 255);
transformFlags |= cmsFLAGS_GAMUTCHECK;
}
if (image.sixteenBit())
{
if (image.hasAlpha())
{
transform = cmsCreateProofingTransform( inprofile,
TYPE_BGRA_16,
outprofile,
TYPE_BGRA_16,
proofprofile,
intent,
intent,
transformFlags);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
else
{
transform = cmsCreateProofingTransform( inprofile,
TYPE_BGR_16,
outprofile,
TYPE_BGR_16,
proofprofile,
intent,
intent,
transformFlags);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
}
else
{
if (image.hasAlpha())
{
transform = cmsCreateProofingTransform( inprofile,
TYPE_BGR_8,
outprofile,
TYPE_BGR_8,
proofprofile,
intent,
intent,
transformFlags);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
else
{
transform = cmsCreateProofingTransform( inprofile,
TYPE_BGR_8,
outprofile,
TYPE_BGR_8,
proofprofile,
intent,
intent,
transformFlags);
if (!transform)
{
DDebug() << k_funcinfo << "LCMS internal error: cannot create a color transform instance" << endl;
return false;
}
}
}
}
//DDebug() << "Transform flags are: " << transformFlags << endl;
// We need to work using temp pixel buffer to apply ICC transformations.
uchar transdata[image.bytesDepth()];
// Always working with uchar* prevent endianess problem.
uchar *data = image.bits();
// We scan all image pixels one by one.
for (uint i=0; i < image.width()*image.height()*image.bytesDepth(); i+=image.bytesDepth())
{
// Apply ICC transformations.
cmsDoTransform( transform, &data[i], &transdata[0], 1);
// Copy buffer to source to update original image with ICC corrections.
// Alpha channel is restored in all cases.
memcpy (&data[i], &transdata[0], (image.bytesDepth() == 8) ? 6 : 3);
}
cmsDeleteTransform(transform);
cmsCloseProfile(inprofile);
cmsCloseProfile(outprofile);
if (d->do_proof_profile)
cmsCloseProfile(proofprofile);
return true;
}
} // NameSpace Digikam
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