Added a bunch of benchmarks

HPPH.Benchmark/AverageBenchmarks.cs

@@ -0,0 +1,72 @@
+using BenchmarkDotNet.Attributes;
+using BenchmarkDotNet.Jobs;
+using HPPH.Reference;
+
+namespace HPPH.Benchmark;
+
+[SimpleJob(RuntimeMoniker.Net80)]
+[HtmlExporter]
+[MemoryDiagnoser]
+public class AverageBenchmarks
+{
+    #region Properties & Fields
+
+    private readonly List<ColorRGB[]> _colors3bpp;
+    private readonly List<ColorRGBA[]> _colors4bpp;
+
+    #endregion
+
+    #region Constructors
+
+    public AverageBenchmarks()
+    {
+        _colors3bpp = BenchmarkHelper.GetSampleData<ColorRGB>();
+        _colors4bpp = BenchmarkHelper.GetSampleData<ColorRGBA>();
+    }
+
+    #endregion
+
+    #region Methods
+
+    [Benchmark]
+    public ColorRGB[] PixelHelper_3BPP()
+    {
+        ColorRGB[] averages = new ColorRGB[_colors3bpp.Count];
+        for (int i = 0; i < _colors3bpp.Count; i++)
+            averages[i] = new ReadOnlySpan<ColorRGB>(_colors3bpp[i]).Average();
+
+        return averages;
+    }
+
+    [Benchmark]
+    public ColorRGBA[] PixelHelper_4BPP()
+    {
+        ColorRGBA[] averages = new ColorRGBA[_colors4bpp.Count];
+        for (int i = 0; i < _colors4bpp.Count; i++)
+            averages[i] = new ReadOnlySpan<ColorRGBA>(_colors4bpp[i]).Average();
+
+        return averages;
+    }
+
+    [Benchmark]
+    public ColorRGB[] Reference_3BPP()
+    {
+        ColorRGB[] averages = new ColorRGB[_colors3bpp.Count];
+        for (int i = 0; i < _colors3bpp.Count; i++)
+            averages[i] = ReferencePixelHelper.Average(new ReadOnlySpan<ColorRGB>(_colors3bpp[i]));
+
+        return averages;
+    }
+
+    [Benchmark]
+    public ColorRGBA[] Reference_4BPP()
+    {
+        ColorRGBA[] averages = new ColorRGBA[_colors4bpp.Count];
+        for (int i = 0; i < _colors4bpp.Count; i++)
+            averages[i] = ReferencePixelHelper.Average(new ReadOnlySpan<ColorRGBA>(_colors4bpp[i]));
+
+        return averages;
+    }
+
+    #endregion
+}

HPPH.Benchmark/BenchmarkHelper.cs

@@ -0,0 +1,22 @@
+using HPPH.System.Drawing;
+
+namespace HPPH.Benchmark;
+
+internal static class BenchmarkHelper
+{
+    private const string SAMPLE_DATA_DIR = @"..\..\..\..\..\..\..\..\sample_data";
+
+    public static List<T[]> GetSampleData<T>()
+        where T : struct, IColor
+    {
+        if (!Directory.Exists(SAMPLE_DATA_DIR)) throw new Exception("sample data not found!");
+
+        List<T[]> colors = [];
+
+        IEnumerable<string> files = Directory.EnumerateFiles(SAMPLE_DATA_DIR, "*.png", SearchOption.AllDirectories);
+        foreach (string file in files)
+            colors.Add(ImageHelper.LoadImage(file).ConvertTo<T>().ToArray());
+
+        return colors;
+    }
+}

HPPH.Benchmark/ConvertBenchmarks.cs

@@ -1,6 +1,5 @@
 using BenchmarkDotNet.Attributes;
 using BenchmarkDotNet.Jobs;
-using HPPH.System.Drawing;
 
 namespace HPPH.Benchmark;
 
@@ -11,7 +10,8 @@ public class ConvertBenchmarks
 {
     #region Properties & Fields
 
-    private readonly List<ColorRGB[]> _colors = [];
+    private readonly List<ColorRGB[]> _colors3bpp;
+    private readonly List<ColorRGBA[]> _colors4bpp;
 
     #endregion
 
@@ -19,13 +19,8 @@ public class ConvertBenchmarks
 
     public ConvertBenchmarks()
     {
-        if (!Directory.Exists(@"..\..\..\..\sample_data")) return;
-
-        _colors = [];
-
-        IEnumerable<string> files = Directory.EnumerateFiles(@"..\..\..\..\sample_data", "*.png", SearchOption.AllDirectories);
-        foreach (string file in files)
-            _colors.Add(ImageHelper.LoadImage(file).AsRefImage<ColorRGB>().ToArray());
+        _colors3bpp = BenchmarkHelper.GetSampleData<ColorRGB>();
+        _colors4bpp = BenchmarkHelper.GetSampleData<ColorRGBA>();
     }
 
     #endregion
@@ -36,10 +31,8 @@ public class ConvertBenchmarks
     public ColorBGR[] RGBToBGR()
     {
         ColorBGR[] result = [];
-        foreach (ColorRGB[] color in _colors)
-        {
+        foreach (ColorRGB[] color in _colors3bpp)
             result = new ReadOnlySpan<ColorRGB>(color).Convert<ColorRGB, ColorBGR>();
-        }
 
         return result;
     }
@@ -48,11 +41,45 @@ public class ConvertBenchmarks
     public ColorBGRA[] RGBToBGRA()
     {
         ColorBGRA[] result = [];
-        foreach (ColorRGB[] color in _colors)
+        foreach (ColorRGB[] color in _colors3bpp)
             result = new ReadOnlySpan<ColorRGB>(color).Convert<ColorRGB, ColorBGRA>();
 
         return result;
     }
 
+    [Benchmark]
+    public ColorABGR[] RGBAToABGR()
+    {
+        ColorABGR[] result = [];
+        foreach (ColorRGBA[] color in _colors4bpp)
+            result = new ReadOnlySpan<ColorRGBA>(color).Convert<ColorRGBA, ColorABGR>();
+
+        return result;
+    }
+
+    [Benchmark]
+    public ColorBGR[] ARGBToBGR()
+    {
+        ColorBGR[] result = [];
+        foreach (ColorRGBA[] color in _colors4bpp)
+            result = new ReadOnlySpan<ColorRGBA>(color).Convert<ColorRGBA, ColorBGR>();
+
+        return result;
+    }
+
+    [Benchmark]
+    public void RGBToBGR_InPlace()
+    {
+        foreach (ColorRGB[] color in _colors3bpp)
+            new Span<ColorRGB>(color).ConvertInPlace<ColorRGB, ColorBGR>();
+    }
+
+    [Benchmark]
+    public void RGBAToABGR_InPlace()
+    {
+        foreach (ColorRGBA[] color in _colors4bpp)
+            new Span<ColorRGBA>(color).ConvertInPlace<ColorRGBA, ColorABGR>();
+    }
+
     #endregion
 }

HPPH.Benchmark/MinMaxBenchmarks.cs

@@ -0,0 +1,72 @@
+using BenchmarkDotNet.Attributes;
+using BenchmarkDotNet.Jobs;
+using HPPH.Reference;
+
+namespace HPPH.Benchmark;
+
+[SimpleJob(RuntimeMoniker.Net80)]
+[HtmlExporter]
+[MemoryDiagnoser]
+public class MinMaxBenchmarks
+{
+    #region Properties & Fields
+
+    private readonly List<ColorRGB[]> _colors3bpp;
+    private readonly List<ColorRGBA[]> _colors4bpp;
+
+    #endregion
+
+    #region Constructors
+
+    public MinMaxBenchmarks()
+    {
+        _colors3bpp = BenchmarkHelper.GetSampleData<ColorRGB>();
+        _colors4bpp = BenchmarkHelper.GetSampleData<ColorRGBA>();
+    }
+
+    #endregion
+
+    #region Methods
+
+    [Benchmark]
+    public IMinMax[] PixelHelper_3BPP()
+    {
+        IMinMax[] minMax = new IMinMax[_colors3bpp.Count];
+        for (int i = 0; i < _colors3bpp.Count; i++)
+            minMax[i] = new ReadOnlySpan<ColorRGB>(_colors3bpp[i]).MinMax();
+
+        return minMax;
+    }
+
+    [Benchmark]
+    public IMinMax[] PixelHelper_4BPP()
+    {
+        IMinMax[] minMax = new IMinMax[_colors4bpp.Count];
+        for (int i = 0; i < _colors4bpp.Count; i++)
+            minMax[i] = new ReadOnlySpan<ColorRGBA>(_colors4bpp[i]).MinMax();
+
+        return minMax;
+    }
+
+    [Benchmark]
+    public IMinMax[] Reference_3BPP()
+    {
+        IMinMax[] minMax = new IMinMax[_colors3bpp.Count];
+        for (int i = 0; i < _colors3bpp.Count; i++)
+            minMax[i] = ReferencePixelHelper.MinMax(new ReadOnlySpan<ColorRGB>(_colors3bpp[i]));
+
+        return minMax;
+    }
+
+    [Benchmark]
+    public IMinMax[] Reference_4BPP()
+    {
+        IMinMax[] minMax = new IMinMax[_colors4bpp.Count];
+        for (int i = 0; i < _colors4bpp.Count; i++)
+            minMax[i] = ReferencePixelHelper.MinMax(new ReadOnlySpan<ColorRGBA>(_colors4bpp[i]));
+
+        return minMax;
+    }
+
+    #endregion
+}

HPPH.Benchmark/Program.cs

@@ -1,4 +1,4 @@
 using BenchmarkDotNet.Running;
 using HPPH.Benchmark;
 
-BenchmarkRunner.Run<ConvertBenchmarks>();
+BenchmarkRunner.Run(typeof(Program).Assembly);

HPPH.Benchmark/SortBenchmarks.cs

@@ -0,0 +1,60 @@
+using BenchmarkDotNet.Attributes;
+using BenchmarkDotNet.Jobs;
+using HPPH.Reference;
+
+namespace HPPH.Benchmark;
+
+[SimpleJob(RuntimeMoniker.Net80)]
+[HtmlExporter]
+[MemoryDiagnoser]
+public class SortBenchmarks
+{
+    #region Properties & Fields
+
+    private readonly List<ColorRGB[]> _colors3bpp;
+    private readonly List<ColorRGBA[]> _colors4bpp;
+
+    #endregion
+
+    #region Constructors
+
+    public SortBenchmarks()
+    {
+        _colors3bpp = BenchmarkHelper.GetSampleData<ColorRGB>();
+        _colors4bpp = BenchmarkHelper.GetSampleData<ColorRGBA>();
+    }
+
+    #endregion
+
+    #region Methods
+
+    [Benchmark]
+    public void PixelHelper_3BPP()
+    {
+        foreach (ColorRGB[] colors in _colors3bpp)
+            new Span<ColorRGB>(colors).SortByRed();
+    }
+
+    [Benchmark]
+    public void PixelHelper_4BPP()
+    {
+        foreach (ColorRGBA[] colors in _colors4bpp)
+            new Span<ColorRGBA>(colors).SortByRed();
+    }
+
+    [Benchmark]
+    public void Reference_3BPP()
+    {
+        foreach (ColorRGB[] colors in _colors3bpp)
+            ReferencePixelHelper.SortByRed(new Span<ColorRGB>(colors));
+    }
+
+    [Benchmark]
+    public void Reference_4BPP()
+    {
+        foreach (ColorRGBA[] colors in _colors4bpp)
+            ReferencePixelHelper.SortByRed(new Span<ColorRGBA>(colors));
+    }
+
+    #endregion
+}

HPPH.Benchmark/SumBenchmarks.cs

@@ -0,0 +1,72 @@
+using BenchmarkDotNet.Attributes;
+using BenchmarkDotNet.Jobs;
+using HPPH.Reference;
+
+namespace HPPH.Benchmark;
+
+[SimpleJob(RuntimeMoniker.Net80)]
+[HtmlExporter]
+[MemoryDiagnoser]
+public class SumBenchmarks
+{
+    #region Properties & Fields
+
+    private readonly List<ColorRGB[]> _colors3bpp;
+    private readonly List<ColorRGBA[]> _colors4bpp;
+
+    #endregion
+
+    #region Constructors
+
+    public SumBenchmarks()
+    {
+        _colors3bpp = BenchmarkHelper.GetSampleData<ColorRGB>();
+        _colors4bpp = BenchmarkHelper.GetSampleData<ColorRGBA>();
+    }
+
+    #endregion
+
+    #region Methods
+
+    [Benchmark]
+    public ISum[] PixelHelper_3BPP()
+    {
+        ISum[] sums = new ISum[_colors3bpp.Count];
+        for (int i = 0; i < _colors3bpp.Count; i++)
+            sums[i] = new ReadOnlySpan<ColorRGB>(_colors3bpp[i]).Sum();
+
+        return sums;
+    }
+
+    [Benchmark]
+    public ISum[] PixelHelper_4BPP()
+    {
+        ISum[] sums = new ISum[_colors4bpp.Count];
+        for (int i = 0; i < _colors4bpp.Count; i++)
+            sums[i] = new ReadOnlySpan<ColorRGBA>(_colors4bpp[i]).Sum();
+
+        return sums;
+    }
+
+    [Benchmark]
+    public ISum[] Reference_3BPP()
+    {
+        ISum[] sums = new ISum[_colors3bpp.Count];
+        for (int i = 0; i < _colors3bpp.Count; i++)
+            sums[i] = ReferencePixelHelper.Sum(new ReadOnlySpan<ColorRGB>(_colors3bpp[i]));
+
+        return sums;
+    }
+
+    [Benchmark]
+    public ISum[] Reference_4BPP()
+    {
+        ISum[] sums = new ISum[_colors4bpp.Count];
+        for (int i = 0; i < _colors4bpp.Count; i++)
+            sums[i] = ReferencePixelHelper.Sum(new ReadOnlySpan<ColorRGBA>(_colors4bpp[i]));
+
+        return sums;
+    }
+
+    #endregion
+}