#ifndef DOUBLEDFRAME_HH

#define DOUBLEDFRAME_HH

#include "FrameSource.hh"

namespace openmsx {

/** Produces a video frame that has every line from the input frame twice

  * plus a possibly repeated line at the top.

  * This class does not copy the data from the input FrameSource.

  */

class DoubledFrame final : public FrameSource

{

public:

	void init(FrameSource* field, int skip);

private:

	[[nodiscard]] unsigned getLineWidth(unsigned line) const override;

	[[nodiscard]] std::span<const Pixel> getUnscaledLine(

		unsigned line, std::span<Pixel> helpBuf) const override;

private:

	/** The original frame whose data will be doubled.

	  */

	FrameSource* field;

	int skip;

};

} // namespace openmsx

#endif