Add Kodachrome

Former-commit-id: 395bbf802c958615ed5e497675200a9868bd816d
Former-commit-id: ccc6ea01f5e2cf203991f4425e88faab7c56ac4c
Former-commit-id: 3ff1d2812e905ee76bdbf50c4ccd4c6e0ad62a82

src/ImageProcessorCore/Filters/Kodachrome.cs

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+// <copyright file="Kodachrome.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageProcessorCore
+{
+    using Processors;
+
+    /// <summary>
+    /// Extension methods for the <see cref="Image"/> type.
+    /// </summary>
+    public static partial class ImageExtensions
+    {
+        /// <summary>
+        /// Alters the colors of the image recreating an old Kodachrome camera effect.
+        /// </summary>
+        /// <typeparam name="T">The pixel format.</typeparam>
+        /// <typeparam name="TP">The packed format. <example>long, float.</example></typeparam>
+        /// <param name="source">The image this method extends.</param>
+        /// <param name="progressHandler">A delegate which is called as progress is made processing the image.</param>
+        /// <returns>The <see cref="Image{T,TP}"/>.</returns>
+        public static Image<T, TP> Kodachrome<T, TP>(this Image<T, TP> source, ProgressEventHandler progressHandler = null)
+            where T : IPackedVector<TP>
+            where TP : struct
+        {
+            return Kodachrome(source, source.Bounds, progressHandler);
+        }
+
+        /// <summary>
+        /// Alters the colors of the image recreating an old Kodachrome camera effect.
+        /// </summary>
+        /// <typeparam name="T">The pixel format.</typeparam>
+        /// <typeparam name="TP">The packed format. <example>long, float.</example></typeparam>
+        /// <param name="source">The image this method extends.</param>
+        /// <param name="rectangle">
+        /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
+        /// </param>
+        /// <param name="progressHandler">A delegate which is called as progress is made processing the image.</param>
+        /// <returns>The <see cref="Image{T,TP}"/>.</returns>
+        public static Image<T, TP> Kodachrome<T, TP>(this Image<T, TP> source, Rectangle rectangle, ProgressEventHandler progressHandler = null)
+            where T : IPackedVector<TP>
+            where TP : struct
+        {
+            KodachromeProcessor<T, TP> processor = new KodachromeProcessor<T, TP>();
+            processor.OnProgress += progressHandler;
+
+            try
+            {
+                return source.Process(rectangle, processor);
+            }
+            finally
+            {
+                processor.OnProgress -= progressHandler;
+            }
+        }
+    }
+}

tests/ImageProcessorCore.Tests/Processors/Filters/KodachromeTest.cs

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+// <copyright file="KodachromeTest.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageProcessorCore.Tests
+{
+    using System.IO;
+
+    using Xunit;
+
+    public class KodachromeTest : FileTestBase
+    {
+        [Fact]
+        public void ImageShouldApplyKodachromeFilter()
+        {
+            const string path = "TestOutput/Kodachrome";
+            if (!Directory.Exists(path))
+            {
+                Directory.CreateDirectory(path);
+            }
+
+            foreach (string file in Files)
+            {
+                using (FileStream stream = File.OpenRead(file))
+                {
+                    string filename = Path.GetFileName(file);
+                    Image image = new Image(stream);
+                    using (FileStream output = File.OpenWrite($"{path}/{filename}"))
+                    {
+                        image.Kodachrome()
+                             .Save(output);
+                    }
+                }
+            }
+        }
+    }
+}