PixelFilterPlugins/lqnx.cpp at master · daelsepara/PixelFilterPlugins · GitHub

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

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

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

	const int FilterID = 0x5D05;
	const char* FilterName = "LQnX";
	const char* FilterDescription = "LQnX Family of Filters";

	bool ComparisonThreshold = true;
	int FilterScaleX = 2;
	int FilterScaleY = 2;

	#include "includes/Init.h"

	void Apply(int argc, void** argv)
	{
		if (argc >= 4)
		{
			auto Input = ((unsigned char*)(argv[0]));
			auto srcx = *((int*)(argv[1]));
			auto srcy = *((int*)(argv[2]));
			auto scale = *((int*)(argv[3]));

			scale = scale < 2 ? 2 : scale;
			scale = scale > 4 ? 4 : scale;

			FilterScaleX = scale;
			FilterScaleY = scale;

			Init(srcx, srcy);

			int P[17];

			for (auto y = 0; y < srcy; y++)
			{
				for (auto x = 0; x < srcx; x++)
				{
					auto c0 = CLR(Input, srcx, srcy, x, y, -1, -1);
					auto c1 = CLR(Input, srcx, srcy, x, y, 0, -1);
					auto c2 = CLR(Input, srcx, srcy, x, y, 1, -1);
					auto c3 = CLR(Input, srcx, srcy, x, y, -1, 0);
					auto c4 = CLR(Input, srcx, srcy, x, y);
					auto c5 = CLR(Input, srcx, srcy, x, y, 1, 0);
					auto c6 = CLR(Input, srcx, srcy, x, y, -1, 1);
					auto c7 = CLR(Input, srcx, srcy, x, y, 0, 1);
					auto c8 = CLR(Input, srcx, srcy, x, y, 1, 1);

					unsigned char pattern = 0;
					if ((IsNotLike(c4, c0)))
						pattern |= 1;
					if ((IsNotLike(c4, c1)))
						pattern |= 2;
					if ((IsNotLike(c4, c2)))
						pattern |= 4;
					if ((IsNotLike(c4, c3)))
						pattern |= 8;
					if ((IsNotLike(c4, c5)))
						pattern |= 16;
					if ((IsNotLike(c4, c6)))
						pattern |= 32;
					if ((IsNotLike(c4, c7)))
						pattern |= 64;
					if ((IsNotLike(c4, c8)))
						pattern |= 128;

					switch(scale)
					{
						case 3: // x3

							Lq3xKernel(pattern, c0, c1, c2, c3, c4, c5, c6, c7, c8, P);

							for (auto Pixel = 1; Pixel < 10; Pixel++)
							{
								Write9RGB(ScaledImage, srcx, srcy, x, y, Pixel, P[Pixel]);
							}

							break;

						case 4: // x4

							Lq4xKernel(pattern, c0, c1, c2, c3, c4, c5, c6, c7, c8, P);

							for (auto Pixel = 1; Pixel < 17; Pixel++)
							{
								Write16RGB(ScaledImage, srcx, srcy, x, y, Pixel, P[Pixel]);
							}

							break;

						default: // x2

							Lq2xKernel(pattern, c0, c1, c2, c3, c4, c5, c6, c7, c8, P);

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

							break;
					}
				}
			}
		}
	}
}