CharacterConverter.hh

Go to the documentation of this file.

#ifndef CHARACTERCONVERTER_HH
#define CHARACTERCONVERTER_HH
 
#include "openmsx.hh"
 
#include <cstdint>
#include <span>
 
namespace openmsx {
 
class VDP;
class VDPVRAM;
class DisplayMode;
 
 
class CharacterConverter
{
public:
        using Pixel = uint32_t;
 
        CharacterConverter(VDP& vdp, std::span<const Pixel, 16> palFg, std::span<const Pixel, 16> palBg);
 
        void convertLine(std::span<Pixel> buf, int line) const;
 
        void setDisplayMode(DisplayMode mode);
 
private:
        inline void renderText1   (std::span<Pixel, 256> buf, int line) const;
        inline void renderText1Q  (std::span<Pixel, 256> buf, int line) const;
        inline void renderText2   (std::span<Pixel, 512> buf, int line) const;
        inline void renderGraphic1(std::span<Pixel, 256> buf, int line) const;
        inline void renderGraphic2(std::span<Pixel, 256> buf, int line) const;
        inline void renderMulti   (std::span<Pixel, 256> buf, int line) const;
        inline void renderMultiQ  (std::span<Pixel, 256> buf, int line) const;
        inline void renderBogus   (std::span<Pixel, 256> buf) const;
        inline void renderBlank   (std::span<Pixel, 256> buf) const;
        inline void renderMultiHelper(Pixel* pixelPtr, int line,
                               unsigned mask, unsigned patternQuarter) const;
 
        [[nodiscard]] std::span<const byte, 32> getNamePtr(int line, int scroll) const;
 
private:
        VDP& vdp;
        VDPVRAM& vram;
 
        std::span<const Pixel, 16> palFg;
        std::span<const Pixel, 16> palBg;
 
        unsigned modeBase = 0; // not strictly needed, but avoids Coverity warning
};
 
} // namespace openmsx
 
#endif