/*
- Copyright 1999-2012 ImageMagick Studio LLC, a non-profit organization
+ Copyright 1999-2014 ImageMagick Studio LLC, a non-profit organization
dedicated to making software imaging solutions freely available.
You may not use this file except in compliance with the License.
#ifndef _MAGICKCORE_GEM_PRIVATE_H
#define _MAGICKCORE_GEM_PRIVATE_H
+#include "MagickCore/pixel-private.h"
+
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
+#define D65X 0.950456
+#define D65Y 1.0
+#define D65Z 1.088754
+#define CIEEpsilon (216.0/24389.0)
+#define CIEK (24389.0/27.0)
+
extern MagickPrivate double
GenerateDifferentialNoise(RandomInfo *,const Quantum,const NoiseType,
const double);
GetOptimalKernelWidth2D(const double,const double);
extern MagickPrivate void
- ConvertHSBTosRGB(const double,const double,const double,double *,double *,
+ ConvertHCLToRGB(const double,const double,const double,double *,double *,
+ double *),
+ ConvertHCLpToRGB(const double,const double,const double,double *,double *,
+ double *),
+ ConvertHSBToRGB(const double,const double,const double,double *,double *,
+ double *),
+ ConvertHSIToRGB(const double,const double,const double,double *,double *,
+ double *),
+ ConvertHSVToRGB(const double,const double,const double,double *,double *,
+ double *),
+ ConvertHWBToRGB(const double,const double,const double,double *,double *,
+ double *),
+ ConvertLCHabToRGB(const double,const double,const double,double *,double *,
double *),
- ConvertHWBTosRGB(const double,const double,const double,double *,double *,
+ ConvertLCHuvToRGB(const double,const double,const double,double *,double *,
double *),
- ConvertsRGBToHSB(const double,const double,const double,double *,double *,
+ ConvertRGBToHCL(const double,const double,const double,double *,double *,
double *),
- ConvertsRGBToHWB(const double,const double,const double,double *,double *,
+ ConvertRGBToHCLp(const double,const double,const double,double *,double *,
+ double *),
+ ConvertRGBToHSB(const double,const double,const double,double *,double *,
+ double *),
+ ConvertRGBToHSI(const double,const double,const double,double *,double *,
+ double *),
+ ConvertRGBToHSV(const double,const double,const double,double *,double *,
+ double *),
+ ConvertRGBToHWB(const double,const double,const double,double *,double *,
+ double *),
+ ConvertRGBToLCHab(const double,const double,const double,double *,double *,
+ double *),
+ ConvertRGBToLCHuv(const double,const double,const double,double *,double *,
double *);
+static inline void ConvertLabToXYZ(const double L,const double a,const double b,
+ double *X,double *Y,double *Z)
+{
+ double
+ x,
+ y,
+ z;
+
+ assert(X != (double *) NULL);
+ assert(Y != (double *) NULL);
+ assert(Z != (double *) NULL);
+ y=(L+16.0)/116.0;
+ x=y+a/500.0;
+ z=y-b/200.0;
+ if ((x*x*x) > CIEEpsilon)
+ x=(x*x*x);
+ else
+ x=(116.0*x-16.0)/CIEK;
+ if ((y*y*y) > CIEEpsilon)
+ y=(y*y*y);
+ else
+ y=L/CIEK;
+ if ((z*z*z) > CIEEpsilon)
+ z=(z*z*z);
+ else
+ z=(116.0*z-16.0)/CIEK;
+ *X=D65X*x;
+ *Y=D65Y*y;
+ *Z=D65Z*z;
+}
+
+static inline void ConvertLuvToXYZ(const double L,const double u,const double v,
+ double *X,double *Y,double *Z)
+{
+ assert(X != (double *) NULL);
+ assert(Y != (double *) NULL);
+ assert(Z != (double *) NULL);
+ if (L > (CIEK*CIEEpsilon))
+ *Y=(double) pow((L+16.0)/116.0,3.0);
+ else
+ *Y=L/CIEK;
+ *X=((*Y*((39.0*L/(v+13.0*L*(9.0*D65Y/(D65X+15.0*D65Y+3.0*D65Z))))-5.0))+
+ 5.0*(*Y))/((((52.0*L/(u+13.0*L*(4.0*D65X/(D65X+15.0*D65Y+3.0*D65Z))))-1.0)/
+ 3.0)-(-1.0/3.0));
+ *Z=(*X*(((52.0*L/(u+13.0*L*(4.0*D65X/(D65X+15.0*D65Y+3.0*D65Z))))-1.0)/3.0))-
+ 5.0*(*Y);
+}
+
+static inline void ConvertRGBToXYZ(const double red,const double green,
+ const double blue,double *X,double *Y,double *Z)
+{
+ double
+ b,
+ g,
+ r;
+
+ /*
+ Convert RGB to XYZ colorspace.
+ */
+ assert(X != (double *) NULL);
+ assert(Y != (double *) NULL);
+ assert(Z != (double *) NULL);
+ r=QuantumScale*DecodePixelGamma(red);
+ g=QuantumScale*DecodePixelGamma(green);
+ b=QuantumScale*DecodePixelGamma(blue);
+ *X=0.41239558896741421610*r+0.35758343076371481710*g+0.18049264738170157350*b;
+ *Y=0.21258623078559555160*r+0.71517030370341084990*g+0.07220049864333622685*b;
+ *Z=0.01929721549174694484*r+0.11918386458084853180*g+0.95049712513157976600*b;
+}
+
+static inline void ConvertXYZToLab(const double X,const double Y,const double Z,
+ double *L,double *a,double *b)
+{
+ double
+ x,
+ y,
+ z;
+
+ assert(L != (double *) NULL);
+ assert(a != (double *) NULL);
+ assert(b != (double *) NULL);
+ if ((X/D65X) > CIEEpsilon)
+ x=pow(X/D65X,1.0/3.0);
+ else
+ x=(CIEK*X/D65X+16.0)/116.0;
+ if ((Y/D65Y) > CIEEpsilon)
+ y=pow(Y/D65Y,1.0/3.0);
+ else
+ y=(CIEK*Y/D65Y+16.0)/116.0;
+ if ((Z/D65Z) > CIEEpsilon)
+ z=pow(Z/D65Z,1.0/3.0);
+ else
+ z=(CIEK*Z/D65Z+16.0)/116.0;
+ *L=((116.0*y)-16.0)/100.0;
+ *a=(500.0*(x-y))/255.0+0.5;
+ *b=(200.0*(y-z))/255.0+0.5;
+}
+
+static inline void ConvertXYZToLuv(const double X,const double Y,const double Z,
+ double *L,double *u,double *v)
+{
+ double
+ alpha;
+
+ assert(L != (double *) NULL);
+ assert(u != (double *) NULL);
+ assert(v != (double *) NULL);
+ if ((Y/D65Y) > CIEEpsilon)
+ *L=(double) (116.0*pow(Y/D65Y,1.0/3.0)-16.0);
+ else
+ *L=CIEK*(Y/D65Y);
+ alpha=PerceptibleReciprocal(X+15.0*Y+3.0*Z);
+ *u=13.0*(*L)*((4.0*alpha*X)-(4.0*D65X/(D65X+15.0*D65Y+3.0*D65Z)));
+ *v=13.0*(*L)*((9.0*alpha*Y)-(9.0*D65Y/(D65X+15.0*D65Y+3.0*D65Z)));
+ *L/=100.0;
+ *u=(*u+134.0)/354.0;
+ *v=(*v+140.0)/262.0;
+}
+
+static inline void ConvertXYZToRGB(const double X,const double Y,const double Z,
+ double *red,double *green,double *blue)
+{
+ double
+ b,
+ g,
+ r;
+
+ assert(red != (double *) NULL);
+ assert(green != (double *) NULL);
+ assert(blue != (double *) NULL);
+ r=3.2406*X-1.5372*Y-0.4986*Z;
+ g=(-0.9689)*X+1.8758*Y+0.0415*Z;
+ b=0.0557*X-0.2040*Y+1.0570*Z;
+ *red=EncodePixelGamma(QuantumRange*r);
+ *green=EncodePixelGamma(QuantumRange*g);
+ *blue=EncodePixelGamma(QuantumRange*b);
+}
+
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
projects / imagemagick / blobdiff