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Initial commit of the converted code. Added a small tester console app that just runs a hard-coded image from the Images folder and converts it.
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Diff for: README.md

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# xBRZ.NET
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A .NET conversion of the xBRZ image upscaling algorithm. The original C++ version can be found here: https://sourceforge.net/projects/xbrz/
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Diff for: xBRZ.NET.sln

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio 14
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VisualStudioVersion = 14.0.25420.1
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "xBRZ.NET", "xBRZ.NET\xBRZ.NET.csproj", "{84EE293E-B938-4512-8A39-86FFC00ED267}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "xBRZTester", "xBRZTester\xBRZTester.csproj", "{0D388C1A-EF27-4B1E-8783-2BA7531D2411}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{84EE293E-B938-4512-8A39-86FFC00ED267}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{84EE293E-B938-4512-8A39-86FFC00ED267}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{84EE293E-B938-4512-8A39-86FFC00ED267}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{84EE293E-B938-4512-8A39-86FFC00ED267}.Release|Any CPU.Build.0 = Release|Any CPU
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{0D388C1A-EF27-4B1E-8783-2BA7531D2411}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{0D388C1A-EF27-4B1E-8783-2BA7531D2411}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{0D388C1A-EF27-4B1E-8783-2BA7531D2411}.Release|Any CPU.ActiveCfg = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobal

Diff for: xBRZ.NET/BlendInfo.cs

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namespace xBRZ.NET
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{
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internal class BlendInfo
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{
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public static char GetTopL(char b) { return (char)((b) & 0x3); }
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public static char GetTopR(char b) { return (char)((b >> 2) & 0x3); }
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public static char GetBottomR(char b) { return (char)((b >> 4) & 0x3); }
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public static char GetBottomL(char b) { return (char)((b >> 6) & 0x3); }
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public static char SetTopL(char b, char bt) { return (char)(b | bt); }
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public static char SetTopR(char b, char bt) { return (char)(b | (bt << 2)); }
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public static char SetBottomR(char b, char bt) { return (char)(b | (bt << 4)); }
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public static char SetBottomL(char b, char bt) { return (char)(b | (bt << 6)); }
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public static char Rotate(char b, RotationDegree rotDeg)
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{
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//assert rotDeg >= 0 && rotDeg < 4 : "RotationDegree enum does not have type: " + rotDeg;
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var l = (int)rotDeg << 1;
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var r = 8 - l;
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return (char)(b << l | b >> r);
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}
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}
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}

Diff for: xBRZ.NET/BlendResult.cs

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namespace xBRZ.NET
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{
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internal class BlendResult
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{
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public char f;
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public char g;
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public char j;
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public char k;
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public void Reset()
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{
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f = g = j = k = (char)0;
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}
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}
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}

Diff for: xBRZ.NET/BlendType.cs

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namespace xBRZ.NET
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{
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internal enum BlendType
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{
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// These blend types must fit into 2 bits.
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BLEND_NONE = 0, //do not blend
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BLEND_NORMAL = 1,//a normal indication to blend
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BLEND_DOMINANT = 2 //a strong indication to blend
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}
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}

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