super2x.cpp

#define _USE_MATH_DEFINES
#include <algorithm>
#include <cmath>
#include <cstdlib>
#include <cstring>

#include "includes/FilterCommon.h"
#include "includes/Interpolate.h"

extern "C"
{
	static unsigned char* ScaledImage = NULL;

	const int FilterID = 0x5D15;
	const char* FilterName = "Super 2X";
	const char* FilterDescription = "FNES' Super 2x Scaling";

	bool ComparisonThreshold = false;
	const int FilterScaleX = 2;
	const int FilterScaleY = 2;

	#include "includes/Init.h"

	void Apply(int argc, void** argv)
	{
		if (argc >= 3)
		{
			auto Input = ((unsigned char*)(argv[0]));
			auto srcx = *((int*)(argv[1]));
			auto srcy = *((int*)(argv[2]));

			Init(srcx, srcy);

			int P[5];

			for (auto y = 0; y < srcy; y++)
			{
				for (auto x = 0; x < srcx; x++)
				{
					auto n = CLR(Input, srcx, srcy, x, y, 0, -1);
					auto w = CLR(Input, srcx, srcy, x, y, -1, 0);
					auto c = CLR(Input, srcx, srcy, x, y, 0, 0);
					auto e = CLR(Input, srcx, srcy, x, y, 1, 0);
					auto s = CLR(Input, srcx, srcy, x, y, 0, 1);

					auto wx = w;
					auto ex = e;

					auto cw = _Mixpal(c, w);
					auto ce = _Mixpal(c, e);

					P[1] = (((IsLike(w, n)) && (IsNotLike(n, e)) && (IsNotLike(w, s))) ? wx : cw);
					P[2] = (((IsLike(n, e)) && (IsNotLike(n, w)) && (IsNotLike(e, s))) ? ex : ce);
					P[3] = (((IsLike(w, s)) && (IsNotLike(w, n)) && (IsNotLike(s, e))) ? wx : cw);
					P[4] = (((IsLike(s, e)) && (IsNotLike(w, s)) && (IsNotLike(n, e))) ? ex : ce);

					for (auto Pixel = 1; Pixel < 5; Pixel++)
					{
						Write4RGB(ScaledImage, srcx, srcy, x, y, Pixel, P[Pixel]);
					}
				}
			}
		}
	}
}