Merge pull request #34 from antonfirsov/master

DecodeJpegMultiple + Test Images

tests/ImageSharp.Benchmarks/Image/DecodeJpegMultiple.cs

@@ -0,0 +1,106 @@
+// <copyright file="DecodeJpegMultiple.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp.Benchmarks.Image
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Drawing;
+    using System.IO;
+    using System.Linq;
+
+    using BenchmarkDotNet.Attributes;
+
+    using Image = ImageSharp.Image;
+    using ImageSharpSize = ImageSharp.Size;
+
+    public class DecodeJpegMultiple
+    {
+        private const string Folder = "../ImageSharp.Tests/TestImages/Formats/Jpg/";
+
+        private Dictionary<string, byte[]> fileNamesToBytes;
+
+        public enum JpegTestingMode
+        {
+            All,
+
+            SmallImagesOnly,
+
+            LargeImagesOnly,
+
+            CalliphoraOnly,
+        }
+
+        [Params(JpegTestingMode.All, JpegTestingMode.SmallImagesOnly, JpegTestingMode.LargeImagesOnly,
+             JpegTestingMode.CalliphoraOnly)]
+        public JpegTestingMode Mode { get; set; }
+
+        private IEnumerable<KeyValuePair<string, byte[]>> RequestedImages
+        {
+            get
+            {
+                int thresholdInBytes = 100000;
+
+                switch (this.Mode)
+                {
+                    case JpegTestingMode.All:
+                        return this.fileNamesToBytes;
+                    case JpegTestingMode.SmallImagesOnly:
+                        return this.fileNamesToBytes.Where(kv => kv.Value.Length < thresholdInBytes);
+                    case JpegTestingMode.LargeImagesOnly:
+                        return this.fileNamesToBytes.Where(kv => kv.Value.Length >= thresholdInBytes);
+                    case JpegTestingMode.CalliphoraOnly:
+                        return new[] { this.fileNamesToBytes.First(kv => kv.Key.ToLower().Contains("calliphora")) };
+                    default:
+                        throw new ArgumentOutOfRangeException();
+                }
+            }
+        }
+
+        [Benchmark(Description = "DecodeJpegMultiple - ImageSharp")]
+        public ImageSharpSize JpegImageSharp()
+        {
+            ImageSharpSize lastSize = new ImageSharpSize();
+            foreach (var kv in this.RequestedImages)
+            {
+                using (MemoryStream memoryStream = new MemoryStream(kv.Value))
+                {
+                    Image image = new Image(memoryStream);
+                    lastSize = new ImageSharpSize(image.Width, image.Height);
+                }
+            }
+
+            return lastSize;
+        }
+
+        [Benchmark(Baseline = true, Description = "DecodeJpegMultiple - System.Drawing")]
+        public Size JpegSystemDrawing()
+        {
+            Size lastSize = new Size();
+            foreach (var kv in this.RequestedImages)
+            {
+                using (MemoryStream memoryStream = new MemoryStream(kv.Value))
+                {
+                    using (System.Drawing.Image image = System.Drawing.Image.FromStream(memoryStream))
+                    {
+                        lastSize = image.Size;
+                    }
+                }
+            }
+
+            return lastSize;
+        }
+
+        [Setup]
+        public void ReadImages()
+        {
+            if (this.fileNamesToBytes != null) return;
+
+            var allFiles = Directory.EnumerateFiles(Folder, "*.jpg", SearchOption.AllDirectories).ToArray();
+
+            this.fileNamesToBytes = allFiles.ToDictionary(fn => fn, File.ReadAllBytes);
+        }
+    }
+}

tests/ImageSharp.Tests/TestImages.cs

@@ -39,16 +39,26 @@ namespace ImageSharp.Tests
             private static readonly string folder = "TestImages/Formats/Jpg/";
             public static string Cmyk => folder + "cmyk.jpg";
             public static string Exif => folder + "exif.jpg";
-            public static string Floorplan => folder + "Floorplan.jpeg";
+            public static string Floorplan => folder + "Floorplan.jpg";
             public static string Calliphora => folder + "Calliphora.jpg";
             public static string Turtle => folder + "turtle.jpg";
             public static string Fb => folder + "fb.jpg";
             public static string Progress => folder + "progress.jpg";
             public static string GammaDalaiLamaGray => folder + "gamma_dalai_lama_gray.jpg";
 
+            public static string Festzug => folder + "Festzug.jpg";
+            public static string Hiyamugi => folder + "Hiyamugi.jpg";
+
+            public static string Jpeg400 => folder + "baseline/jpeg400jfif.jpg";
+            public static string Jpeg420 => folder + "baseline/jpeg420exif.jpg";
+            public static string Jpeg422 => folder + "baseline/jpeg422jfif.jpg";
+            public static string Jpeg444 => folder + "baseline/jpeg444.jpg";
+            
 
             public static readonly string[] All = {
-                Cmyk, Exif, Floorplan, Calliphora, Turtle, Fb, Progress, GammaDalaiLamaGray
+                Cmyk, Exif, Floorplan, Calliphora, Turtle, Fb, Progress, GammaDalaiLamaGray,
+                Festzug, Hiyamugi,
+                Jpeg400, Jpeg420, Jpeg444,
             };
         }