SaI3xScaler.hh

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#ifndef SAI3XSCALER_HH
#define SAI3XSCALER_HH
 
#include "Scaler3.hh"
#include "PixelOperations.hh"
 
namespace openmsx {
 
template<std::unsigned_integral Pixel>
class SaI3xScaler final : public Scaler3<Pixel>
{
public:
        explicit SaI3xScaler(const PixelOperations<Pixel>& pixelOps);
        void scaleBlank1to3(
                FrameSource& src, unsigned srcStartY, unsigned srcEndY,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
        void scale1x1to3x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
 
private:
        [[nodiscard]] inline Pixel blend(Pixel p1, Pixel p2) const;
 
        template<unsigned NX, unsigned NY>
        void scaleFixed(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY);
        void scaleAny(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY);
 
        PixelOperations<Pixel> pixelOps;
};
 
} // namespace openmsx
 
#endif