📷 A modern, cross-platform, 2D Graphics library for .NET
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 

84 lines
4.0 KiB

// Copyright (c) Six Labors.
// Licensed under the Apache License, Version 2.0.
using System.IO;
using BenchmarkDotNet.Attributes;
using SixLabors.ImageSharp.Formats.Jpeg;
using SixLabors.ImageSharp.PixelFormats;
using SixLabors.ImageSharp.Tests;
using SDImage = System.Drawing.Image;
using SDSize = System.Drawing.Size;
// ReSharper disable InconsistentNaming
namespace SixLabors.ImageSharp.Benchmarks.Codecs.Jpeg
{
/// <summary>
/// Image-specific Jpeg benchmarks
/// </summary>
[Config(typeof(Config.ShortMultiFramework))]
public class DecodeJpeg_ImageSpecific
{
private byte[] jpegBytes;
private string TestImageFullPath => Path.Combine(TestEnvironment.InputImagesDirectoryFullPath, this.TestImage);
#pragma warning disable SA1115
[Params(
TestImages.Jpeg.BenchmarkSuite.Lake_Small444YCbCr,
TestImages.Jpeg.BenchmarkSuite.BadRstProgressive518_Large444YCbCr,
// The scaled result for the large image "ExifGetString750Transform_Huge420YCbCr"
// is almost the same as the result for Jpeg420Exif,
// which proves that the execution time for the most common YCbCr 420 path scales linearly.
// TestImages.Jpeg.BenchmarkSuite.ExifGetString750Transform_Huge420YCbCr,
TestImages.Jpeg.BenchmarkSuite.Jpeg420Exif_MidSizeYCbCr)]
public string TestImage { get; set; }
[GlobalSetup]
public void ReadImages()
{
if (this.jpegBytes == null)
{
this.jpegBytes = File.ReadAllBytes(this.TestImageFullPath);
}
}
[Benchmark(Baseline = true, Description = "Decode Jpeg - System.Drawing")]
public SDSize JpegSystemDrawing()
{
using (var memoryStream = new MemoryStream(this.jpegBytes))
{
using (var image = SDImage.FromStream(memoryStream))
{
return image.Size;
}
}
}
[Benchmark(Description = "Decode Jpeg - ImageSharp")]
public Size JpegImageSharp()
{
using (var memoryStream = new MemoryStream(this.jpegBytes))
{
using (var image = Image.Load<Rgba32>(memoryStream, new JpegDecoder { IgnoreMetadata = true }))
{
return new Size(image.Width, image.Height);
}
}
}
/*
| Method | TestImage | Mean | Error | StdDev | Ratio | RatioSD | Gen 0 | Gen 1 | Gen 2 | Allocated |
|------------------------------- |--------------------- |-----------:|------------:|-----------:|------:|--------:|------:|------:|------:|-----------:|
| 'Decode Jpeg - System.Drawing' | Jpg/b(...)e.jpg [21] | 5.122 ms | 1.3978 ms | 0.0766 ms | 1.00 | 0.00 | - | - | - | 176 B |
| 'Decode Jpeg - ImageSharp' | Jpg/b(...)e.jpg [21] | 11.991 ms | 0.2514 ms | 0.0138 ms | 2.34 | 0.03 | - | - | - | 15816 B |
| | | | | | | | | | | |
| 'Decode Jpeg - System.Drawing' | Jpg/b(...)f.jpg [28] | 14.943 ms | 1.8410 ms | 0.1009 ms | 1.00 | 0.00 | - | - | - | 176 B |
| 'Decode Jpeg - ImageSharp' | Jpg/b(...)f.jpg [28] | 29.759 ms | 1.5452 ms | 0.0847 ms | 1.99 | 0.01 | - | - | - | 16824 B |
| | | | | | | | | | | |
| 'Decode Jpeg - System.Drawing' | Jpg/i(...)e.jpg [43] | 388.229 ms | 382.8946 ms | 20.9877 ms | 1.00 | 0.00 | - | - | - | 216 B |
| 'Decode Jpeg - ImageSharp' | Jpg/i(...)e.jpg [43] | 276.490 ms | 195.5104 ms | 10.7166 ms | 0.71 | 0.01 | - | - | - | 36022368 B |
*/
}
}