RGBTriplet3xScaler.hh

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#ifndef RGBTRIPLET3XSCALER_HH
#define RGBTRIPLET3XSCALER_HH
 
#include "Scaler3.hh"
#include "PixelOperations.hh"
#include "Scanline.hh"
#include <utility>
 
namespace openmsx {
 
class RenderSettings;
template<std::unsigned_integral Pixel> class PolyLineScaler;
 
template<std::unsigned_integral Pixel>
class RGBTriplet3xScaler final : public Scaler3<Pixel>
{
public:
        RGBTriplet3xScaler(const PixelOperations<Pixel>& pixelOps,
                           const RenderSettings& renderSettings);
 
protected:
        void scaleImage(FrameSource& src, const RawFrame* superImpose,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
 
        void scaleBlank1to3(
                FrameSource& src, unsigned srcStartY, unsigned srcEndY,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
        void scaleBlank2to3(
                FrameSource& src, unsigned srcStartY, unsigned srcEndY,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
        void scale2x1to9x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
        void scale2x2to9x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                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;
        void scale1x2to3x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
        void scale4x1to9x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
        void scale4x2to9x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
        void scale2x1to3x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
        void scale2x2to3x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
        void scale8x1to9x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
        void scale8x2to9x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
        void scale4x1to3x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
        void scale4x2to3x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY) override;
 
private:
        [[nodiscard]] std::pair<unsigned, unsigned> calcBlur();
 
        void rgbify(std::span<const Pixel> in, std::span<Pixel> out, unsigned c1, unsigned c2);
 
        void scaleLine(std::span<const Pixel> srcLine, std::span<Pixel> dstLine,
                       PolyLineScaler<Pixel>& scale, unsigned c1, unsigned c2);
        void doScale1(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY,
                PolyLineScaler<Pixel>& scale);
        void doScale2(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY,
                PolyLineScaler<Pixel>& scale);
 
private:
        PixelOperations<Pixel> pixelOps;
        Scanline<Pixel> scanline;
        const RenderSettings& settings;
};
 
} // namespace openmsx
 
#endif