colorspace.h

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#pragma once
 
#include <array>
#include <promeki/core/namespace.h>
#include <promeki/proav/ciepoint.h>
 
PROMEKI_NAMESPACE_BEGIN
 
class ColorSpace {
        public:
                enum ID {
                        Invalid = 0,            
                        Rec709,                 
                        LinearRec709,           
                        Rec601_PAL,             
                        LinearRec601_PAL,       
                        Rec601_NTSC,            
                        LinearRec601_NTSC       
                };
 
                typedef double (*TransformFunc)(double);
 
                typedef std::array<CIEPoint, 4> Params;
 
                struct Data {
                        ID              id;                         
                        String          name;                       
                        String          desc;                       
                        ID              invID;                      
                        Params          params;                     
                        TransformFunc   transferFunc = nullptr;     
                        TransformFunc   invTransferFunc = nullptr;  
                };
 
                //static const ColorSpace &lookupColorSpace(ID type);
 
                ColorSpace(ID id = Invalid) : d(lookup(id)) { }
 
                const ID id() const { return d->id; }
                ColorSpace inverseColorSpace() { return d->invID; }
                const String name() const { return d->name; }
                const String desc() const { return d->desc; }
                const CIEPoint &red() const { return d->params[0]; }
                const CIEPoint &green() const { return d->params[1]; }
                const CIEPoint &blue() const { return d->params[2]; }
                const CIEPoint &whitePoint() const { return d->params[3]; }
                double transferFunc(double input) const { return d->transferFunc(input); }
 
                double invtTransferFunc(double input) const { return d->invTransferFunc(input); }
 
        private:
                const Data *d = nullptr;
                static const Data *lookup(ID val);
};
 
PROMEKI_NAMESPACE_END