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Restored decoder parse stream only benchmark

pull/1694/head
Dmitry Pentin 5 years ago
parent
84900dcd29
commit
82e22c30b4
4 changed files with 82 additions and 65 deletions
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  1. 8
      src/ImageSharp/Formats/Jpeg/JpegDecoderCore.cs
  2. 135
      tests/ImageSharp.Benchmarks/Codecs/Jpeg/DecodeJpegParseStreamOnly.cs
  3. 2
      tests/ImageSharp.Tests/Formats/Jpg/SpectralJpegTests.cs
  4. 2
      tests/ImageSharp.Tests/Formats/Jpg/SpectralToPixelConversionTests.cs

8
src/ImageSharp/Formats/Jpeg/JpegDecoderCore.cs
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@ -248,8 +248,8 @@ namespace SixLabors.ImageSharp.Formats.Jpeg
/// </summary>
/// <param name="stream">The input stream.</param>
/// <param name="scanDecoder">Scan decoder used exclusively to decode SOS marker.</param>
/// <param name="ct">The token to monitor cancellation.</param>
internal void ParseStream(BufferedReadStream stream, HuffmanScanDecoder scanDecoder, CancellationToken ct)
/// <param name="cancellationToken">The token to monitor cancellation.</param>
internal void ParseStream(BufferedReadStream stream, HuffmanScanDecoder scanDecoder, CancellationToken cancellationToken)
{
bool metadataOnly = scanDecoder == null;
@ -283,7 +283,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg
while (fileMarker.Marker != JpegConstants.Markers.EOI
|| (fileMarker.Marker == JpegConstants.Markers.EOI && fileMarker.Invalid))
{
ct.ThrowIfCancellationRequested();
cancellationToken.ThrowIfCancellationRequested();
if (!fileMarker.Invalid)
{
@ -301,7 +301,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg
case JpegConstants.Markers.SOS:
if (!metadataOnly)
{
this.ProcessStartOfScanMarker(stream, ct);
this.ProcessStartOfScanMarker(stream, cancellationToken);
break;
}
else

135
tests/ImageSharp.Benchmarks/Codecs/Jpeg/DecodeJpegParseStreamOnly.cs
View File

@ -1,59 +1,76 @@
//// 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.IO;
//using SixLabors.ImageSharp.Tests;
//using SDSize = System.Drawing.Size;
//namespace SixLabors.ImageSharp.Benchmarks.Codecs.Jpeg
//{
// [Config(typeof(Config.ShortMultiFramework))]
// public class DecodeJpegParseStreamOnly
// {
// [Params(TestImages.Jpeg.BenchmarkSuite.Lake_Small444YCbCr)]
// public string TestImage { get; set; }
// private string TestImageFullPath => Path.Combine(TestEnvironment.InputImagesDirectoryFullPath, this.TestImage);
// private byte[] jpegBytes;
// [GlobalSetup]
// public void Setup()
// => this.jpegBytes = File.ReadAllBytes(this.TestImageFullPath);
// [Benchmark(Baseline = true, Description = "System.Drawing FULL")]
// public SDSize JpegSystemDrawing()
// {
// using var memoryStream = new MemoryStream(this.jpegBytes);
// using var image = System.Drawing.Image.FromStream(memoryStream);
// return image.Size;
// }
// [Benchmark(Description = "JpegDecoderCore.ParseStream")]
// public void ParseStream()
// {
// using var memoryStream = new MemoryStream(this.jpegBytes);
// using var bufferedStream = new BufferedReadStream(Configuration.Default, memoryStream);
// var decoder = new JpegDecoderCore(Configuration.Default, new JpegDecoder { IgnoreMetadata = true });
// decoder.ParseStream(bufferedStream);
// decoder.Dispose();
// }
// }
// /*
// | Method | Job | Runtime | TestImage | Mean | Error | StdDev | Ratio | Gen 0 | Gen 1 | Gen 2 | Allocated |
// |---------------------------- |----------- |-------------- |--------------------- |---------:|----------:|----------:|------:|--------:|------:|------:|----------:|
// | 'System.Drawing FULL' | Job-HITJFX | .NET 4.7.2 | Jpg/b(...)e.jpg [21] | 5.828 ms | 0.9885 ms | 0.0542 ms | 1.00 | 46.8750 | - | - | 211566 B |
// | JpegDecoderCore.ParseStream | Job-HITJFX | .NET 4.7.2 | Jpg/b(...)e.jpg [21] | 5.833 ms | 0.2923 ms | 0.0160 ms | 1.00 | - | - | - | 12416 B |
// | | | | | | | | | | | | |
// | 'System.Drawing FULL' | Job-WPSKZD | .NET Core 2.1 | Jpg/b(...)e.jpg [21] | 6.018 ms | 2.1374 ms | 0.1172 ms | 1.00 | 46.8750 | - | - | 210768 B |
// | JpegDecoderCore.ParseStream | Job-WPSKZD | .NET Core 2.1 | Jpg/b(...)e.jpg [21] | 4.382 ms | 0.9009 ms | 0.0494 ms | 0.73 | - | - | - | 12360 B |
// | | | | | | | | | | | | |
// | 'System.Drawing FULL' | Job-ZLSNRP | .NET Core 3.1 | Jpg/b(...)e.jpg [21] | 5.714 ms | 0.4078 ms | 0.0224 ms | 1.00 | - | - | - | 176 B |
// | JpegDecoderCore.ParseStream | Job-ZLSNRP | .NET Core 3.1 | Jpg/b(...)e.jpg [21] | 4.239 ms | 1.0943 ms | 0.0600 ms | 0.74 | - | - | - | 12406 B |
// */
//}
// 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.Formats.Jpeg.Components.Decoder;
using SixLabors.ImageSharp.IO;
using SixLabors.ImageSharp.Tests;
using SDSize = System.Drawing.Size;
namespace SixLabors.ImageSharp.Benchmarks.Codecs.Jpeg
{
//[Config(typeof(Config.ShortMultiFramework))]
public class DecodeJpegParseStreamOnly
{
[Params(TestImages.Jpeg.BenchmarkSuite.Lake_Small444YCbCr)]
public string TestImage { get; set; }
private string TestImageFullPath => Path.Combine(TestEnvironment.InputImagesDirectoryFullPath, this.TestImage);
private byte[] jpegBytes;
[GlobalSetup]
public void Setup()
=> this.jpegBytes = File.ReadAllBytes(this.TestImageFullPath);
//[Benchmark(Baseline = true, Description = "System.Drawing FULL")]
//public SDSize JpegSystemDrawing()
//{
// using var memoryStream = new MemoryStream(this.jpegBytes);
// using var image = System.Drawing.Image.FromStream(memoryStream);
// return image.Size;
//}
[Benchmark(Description = "JpegDecoderCore.ParseStream")]
public void ParseStream()
{
using var memoryStream = new MemoryStream(this.jpegBytes);
using var bufferedStream = new BufferedReadStream(Configuration.Default, memoryStream);
var decoder = new JpegDecoderCore(Configuration.Default, new JpegDecoder { IgnoreMetadata = true });
var scanDecoder = new HuffmanScanDecoder(bufferedStream, new NoopSpectralConverter(), cancellationToken: default);
decoder.ParseStream(bufferedStream, scanDecoder, cancellationToken: default);
decoder.Dispose();
}
// We want to test only stream parsing and scan decoding, we don't need to convert spectral data to actual pixels
// Nor we need to allocate final pixel buffer
// Note: this still introduces virtual method call overhead for baseline interleaved images
// There's no way to eliminate it as spectral conversion is built into the scan decoding loop for memory footprint reduction
private class NoopSpectralConverter : SpectralConverter
{
public override void ConvertStrideBaseline()
{
}
public override void InjectFrameData(JpegFrame frame, IRawJpegData jpegData)
{
}
}
}
/*
| Method | Job | Runtime | TestImage | Mean | Error | StdDev | Ratio | Gen 0 | Gen 1 | Gen 2 | Allocated |
|---------------------------- |----------- |-------------- |--------------------- |---------:|----------:|----------:|------:|--------:|------:|------:|----------:|
| 'System.Drawing FULL' | Job-HITJFX | .NET 4.7.2 | Jpg/b(...)e.jpg [21] | 5.828 ms | 0.9885 ms | 0.0542 ms | 1.00 | 46.8750 | - | - | 211566 B |
| JpegDecoderCore.ParseStream | Job-HITJFX | .NET 4.7.2 | Jpg/b(...)e.jpg [21] | 5.833 ms | 0.2923 ms | 0.0160 ms | 1.00 | - | - | - | 12416 B |
| | | | | | | | | | | | |
| 'System.Drawing FULL' | Job-WPSKZD | .NET Core 2.1 | Jpg/b(...)e.jpg [21] | 6.018 ms | 2.1374 ms | 0.1172 ms | 1.00 | 46.8750 | - | - | 210768 B |
| JpegDecoderCore.ParseStream | Job-WPSKZD | .NET Core 2.1 | Jpg/b(...)e.jpg [21] | 4.382 ms | 0.9009 ms | 0.0494 ms | 0.73 | - | - | - | 12360 B |
| | | | | | | | | | | | |
| 'System.Drawing FULL' | Job-ZLSNRP | .NET Core 3.1 | Jpg/b(...)e.jpg [21] | 5.714 ms | 0.4078 ms | 0.0224 ms | 1.00 | - | - | - | 176 B |
| JpegDecoderCore.ParseStream | Job-ZLSNRP | .NET Core 3.1 | Jpg/b(...)e.jpg [21] | 4.239 ms | 1.0943 ms | 0.0600 ms | 0.74 | - | - | - | 12406 B |
*/
}

2
tests/ImageSharp.Tests/Formats/Jpg/SpectralJpegTests.cs
View File

@ -90,7 +90,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
var scanDecoder = new HuffmanScanDecoder(bufferedStream, debugConverter, cancellationToken: default);
// This would parse entire image
decoder.ParseStream(bufferedStream, scanDecoder, ct: default);
decoder.ParseStream(bufferedStream, scanDecoder, cancellationToken: default);
// Actual verification
this.VerifySpectralCorrectnessImpl(libJpegData, debugConverter.SpectralData);

2
tests/ImageSharp.Tests/Formats/Jpg/SpectralToPixelConversionTests.cs
View File

@ -46,7 +46,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
using var converter = new SpectralConverter<TPixel>(Configuration.Default, cancellationToken: default);
var decoder = new JpegDecoderCore(Configuration.Default, new JpegDecoder());
var scanDecoder = new HuffmanScanDecoder(bufferedStream, converter, cancellationToken: default);
decoder.ParseStream(bufferedStream, scanDecoder, ct: default);
decoder.ParseStream(bufferedStream, scanDecoder, cancellationToken: default);
// Test metadata
provider.Utility.TestGroupName = nameof(JpegDecoderTests);

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