further cleanup

src/ImageSharp/Formats/Jpeg/README.md

@@ -1,3 +1,8 @@
-Encoder/Decoder adapted and extended from:
+Encoder adapted and extended from:
+https://golang.org/src/image/jpeg/
 
-https://golang.org/src/image/jpeg/
+Decoder orchestration code is based on:
+https://github.com/mozilla/pdf.js
+
+Huffmann decoder is based on:
+https://github.com/rds1983/StbSharp

tests/ImageSharp.Tests/Formats/Jpg/JpegDecoderTests.Baseline.cs

@@ -42,13 +42,5 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
             // TODO: We need a public ImageDecoderException class in ImageSharp!
             Assert.ThrowsAny<Exception>(() => provider.GetImage(JpegDecoder));
         }
-
-        [Theory(Skip = "Debug only, enable manually!")]
-        [WithFileCollection(nameof(BaselineTestJpegs), PixelTypes.Rgba32)]
-        public void CompareJpegDecoders_Baseline<TPixel>(TestImageProvider<TPixel> provider)
-            where TPixel : struct, IPixel<TPixel>
-        {
-            this.CompareJpegDecodersImpl(provider, DecodeBaselineJpegOutputName);
-        }
     }
 }

tests/ImageSharp.Tests/Formats/Jpg/JpegDecoderTests.Progressive.cs

@@ -33,13 +33,5 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
                     appendPixelTypeToFileName: false);
             }
         }
-
-        [Theory(Skip = "Debug only, enable manually!")]
-        [WithFileCollection(nameof(ProgressiveTestJpegs), PixelTypes.Rgba32)]
-        public void CompareJpegDecoders_Progressive<TPixel>(TestImageProvider<TPixel> provider)
-            where TPixel : struct, IPixel<TPixel>
-        {
-            this.CompareJpegDecodersImpl(provider, DecodeProgressiveJpegOutputName);
-        }
     }
 }

tests/ImageSharp.Tests/Formats/Jpg/JpegDecoderTests.cs

@@ -63,7 +63,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
         private static JpegDecoder JpegDecoder => new JpegDecoder();
 
         [Fact]
-        public void ParseStream_BasicPropertiesAreCorrect1_PdfJs()
+        public void ParseStream_BasicPropertiesAreCorrect()
         {
             byte[] bytes = TestFile.Create(TestImages.Jpeg.Progressive.Progress).Bytes;
             using (var ms = new MemoryStream(bytes))
@@ -122,20 +122,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
 
             return "0%";
         }
-
-        private void CompareJpegDecodersImpl<TPixel>(TestImageProvider<TPixel> provider, string testName)
-            where TPixel : struct, IPixel<TPixel>
-        {
-            this.Output.WriteLine(provider.SourceFileOrDescription);
-            provider.Utility.TestName = testName;
-
-            using (Image<TPixel> image = provider.GetImage(JpegDecoder))
-            {
-                string d = this.GetDifferenceInPercentageString(image, provider);
-                this.Output.WriteLine($"Difference using decoder: {d}");
-            }
-        }
-
+        
         // DEBUG ONLY!
         // The PDF.js output should be saved by "tests\ImageSharp.Tests\Formats\Jpg\pdfjs\jpeg-converter.htm"
         // into "\tests\Images\ActualOutput\JpegDecoderTests\"