File indexing completed on 2024-06-16 04:15:53 

0001 /*
0002  *  SPDX-FileCopyrightText: 2013 Sahil Nagpal <nagpal.sahil01@gmail.com>
0003  *
0004  * SPDX-License-Identifier: LGPL-2.0-or-later
0005 */
0006 
0007 #include "kis_dodgemidtones_adjustment.h"
0008 #include <KoConfig.h>
0009 
0010 #include <kis_debug.h>
0011 #include <klocalizedstring.h>
0012 #ifdef HAVE_OPENEXR
0013 #include <half.h>
0014 #endif
0015 
0016 #include <KoColorConversions.h>
0017 #include <KoColorModelStandardIds.h>
0018 #include <KoColorSpace.h>
0019 #include <KoColorSpaceTraits.h>
0020 #include <KoColorTransformation.h>
0021 #include <KoID.h>
0022  
0023 template<typename _channel_type_, typename traits >
0024 class KisDodgeMidtonesAdjustment : public KoColorTransformation
0025  {
0026     typedef traits RGBTrait;
0027     typedef typename RGBTrait::Pixel RGBPixel;
0028 
0029 public:
0030     KisDodgeMidtonesAdjustment(){}
0031 
0032 public:
0033     
0034     void transform(const quint8 *srcU8, quint8 *dstU8, qint32 nPixels) const override
0035     {
0036         const RGBPixel* src = reinterpret_cast<const RGBPixel*>(srcU8);
0037         RGBPixel* dst = reinterpret_cast<RGBPixel*>(dstU8);
0038         float value_red, value_green, value_blue;
0039         const float factor(1.0/(1.0 + exposure));
0040         while(nPixels > 0) {
0041 
0042             value_red = pow((float)KoColorSpaceMaths<_channel_type_, float>::scaleToA(src->red), factor);
0043             value_green = pow((float)KoColorSpaceMaths<_channel_type_, float>::scaleToA(src->green), factor);
0044             value_blue = pow((float)KoColorSpaceMaths<_channel_type_, float>::scaleToA(src->blue), factor);
0045             
0046             dst->red = KoColorSpaceMaths< float, _channel_type_ >::scaleToA(value_red);
0047             dst->green = KoColorSpaceMaths< float, _channel_type_ >::scaleToA(value_green);
0048             dst->blue = KoColorSpaceMaths< float, _channel_type_ >::scaleToA(value_blue);
0049             dst->alpha = src->alpha;
0050             
0051             --nPixels;
0052             ++src;
0053             ++dst;
0054         }
0055     }
0056 
0057     QList<QString> parameters() const override
0058     {
0059         QList<QString> list;
0060         list << "exposure";
0061         return list;
0062     }
0063 
0064     int parameterId(const QString& name) const override
0065     {
0066         if (name == "exposure")
0067         return 0;
0068         return -1;
0069     }
0070 
0071     void setParameter(int id, const QVariant& parameter) override
0072     {
0073         switch(id)
0074         {
0075         case 0:
0076             exposure = parameter.toDouble();
0077             break;
0078         default:
0079             ;
0080         }
0081     }
0082 private:
0083 
0084     float exposure {0.0f};
0085 };
0086 
0087  KisDodgeMidtonesAdjustmentFactory::KisDodgeMidtonesAdjustmentFactory()
0088     : KoColorTransformationFactory("DodgeMidtones")
0089 {
0090 }
0091 
0092 QList< QPair< KoID, KoID > > KisDodgeMidtonesAdjustmentFactory::supportedModels() const
0093 {
0094     QList< QPair< KoID, KoID > > l;
0095     l.append(QPair< KoID, KoID >(RGBAColorModelID , Integer8BitsColorDepthID));
0096     l.append(QPair< KoID, KoID >(RGBAColorModelID , Integer16BitsColorDepthID));
0097     l.append(QPair< KoID, KoID >(RGBAColorModelID , Float16BitsColorDepthID));
0098     l.append(QPair< KoID, KoID >(RGBAColorModelID , Float32BitsColorDepthID)); 
0099     return l;
0100 }
0101 
0102 KoColorTransformation* KisDodgeMidtonesAdjustmentFactory::createTransformation(const KoColorSpace* colorSpace, QHash<QString, QVariant> parameters) const
0103 {
0104     KoColorTransformation * adj;
0105     if (colorSpace->colorModelId() != RGBAColorModelID) {
0106         dbgKrita << "Unsupported color space " << colorSpace->id() << " in KisDodgeMidtonesAdjustmentFactory::createTransformation";
0107         return 0;
0108     }
0109     if (colorSpace->colorDepthId() == Float32BitsColorDepthID) {
0110         adj = new KisDodgeMidtonesAdjustment< float, KoRgbTraits < float > >();
0111     }
0112 #ifdef HAVE_OPENEXR
0113     else if (colorSpace->colorDepthId() == Float16BitsColorDepthID) {
0114         adj = new KisDodgeMidtonesAdjustment< half, KoRgbTraits < half > >();
0115     }
0116 #endif
0117     else if(colorSpace->colorDepthId() == Integer16BitsColorDepthID) {
0118         adj = new KisDodgeMidtonesAdjustment< quint16, KoBgrTraits < quint16 > >();
0119     } else if(colorSpace->colorDepthId() == Integer8BitsColorDepthID) {
0120         adj = new KisDodgeMidtonesAdjustment< quint8, KoBgrTraits < quint8 > >();
0121     } else {
0122         dbgKrita << "Unsupported color space " << colorSpace->id() << " in KisDodgeMidtonesAdjustmentFactory::createTransformation";
0123         return 0;
0124     }
0125     adj->setParameters(parameters);
0126     return adj;
0127 }