diff --git a/src/ImageSharp/Formats/Jpeg/Components/Decoder/HuffmanScanDecoder.cs b/src/ImageSharp/Formats/Jpeg/Components/Decoder/HuffmanScanDecoder.cs index 447f2c6435..7a63ef7c66 100644 --- a/src/ImageSharp/Formats/Jpeg/Components/Decoder/HuffmanScanDecoder.cs +++ b/src/ImageSharp/Formats/Jpeg/Components/Decoder/HuffmanScanDecoder.cs @@ -18,43 +18,16 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder { private readonly BufferedReadStream stream; - // huffman tables - public HuffmanTable[] dcHuffmanTables; - public HuffmanTable[] acHuffmanTables; - // Frame related private JpegFrame frame; private JpegComponent[] components; // The restart interval. private int restartInterval; + // How many mcu's are left to do. private int todo; - public int ResetInterval - { - set - { - restartInterval = value; - todo = value; - } - } - - // The number of interleaved components. - public int componentsLength; - - // The spectral selection start. - public int spectralStart; - - // The spectral selection end. - public int spectralEnd; - - // The successive approximation high bit end. - public int successiveHigh; - - // The successive approximation low bit end. - public int successiveLow; - // The End-Of-Block countdown for ending the sequence prematurely when the remaining coefficients are zero. private int eobrun; @@ -63,7 +36,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder private HuffmanScanBuffer scanBuffer; - private SpectralConverter spectralConverter; + private readonly SpectralConverter spectralConverter; private CancellationToken cancellationToken; @@ -71,15 +44,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder /// Initializes a new instance of the class. /// /// The input stream. - /// The image frame. - /// The DC Huffman tables. - /// The AC Huffman tables. - /// The length of the components. Different to the array length. - /// The reset interval. - /// The spectral selection start. - /// The spectral selection end. - /// The successive approximation bit high end. - /// The successive approximation bit low end. + /// Spectral to pixel converter. /// The token to monitor cancellation. public HuffmanScanDecoder( BufferedReadStream stream, @@ -92,6 +57,36 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder this.cancellationToken = cancellationToken; } + // huffman tables + public HuffmanTable[] DcHuffmanTables { get; set; } + + public HuffmanTable[] AcHuffmanTables { get; set; } + + // Reset interval + public int ResetInterval + { + set + { + this.restartInterval = value; + this.todo = value; + } + } + + // The number of interleaved components. + public int ComponentsLength { get; set; } + + // The spectral selection start. + public int SpectralStart { get; set; } + + // The spectral selection end. + public int SpectralEnd { get; set; } + + // The successive approximation high bit end. + public int SuccessiveHigh { get; set; } + + // The successive approximation low bit end. + public int SuccessiveLow { get; set; } + /// /// Decodes the entropy coded data. /// @@ -126,7 +121,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder private void ParseBaselineData() { - if (this.componentsLength == 1) + if (this.ComponentsLength == 1) { this.frame.AllocateComponents(fullScan: true); this.ParseBaselineDataNonInterleaved(); @@ -148,13 +143,13 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder ref HuffmanScanBuffer buffer = ref this.scanBuffer; // Pre-derive the huffman table to avoid in-loop checks. - for (int i = 0; i < this.componentsLength; i++) + for (int i = 0; i < this.ComponentsLength; i++) { int order = this.frame.ComponentOrder[i]; JpegComponent component = this.components[order]; - ref HuffmanTable dcHuffmanTable = ref this.dcHuffmanTables[component.DCHuffmanTableId]; - ref HuffmanTable acHuffmanTable = ref this.acHuffmanTables[component.ACHuffmanTableId]; + ref HuffmanTable dcHuffmanTable = ref this.DcHuffmanTables[component.DCHuffmanTableId]; + ref HuffmanTable acHuffmanTable = ref this.AcHuffmanTables[component.ACHuffmanTableId]; dcHuffmanTable.Configure(); acHuffmanTable.Configure(); } @@ -169,13 +164,13 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder // Scan an interleaved mcu... process components in order int mcuRow = mcu / mcusPerLine; int mcuCol = mcu % mcusPerLine; - for (int k = 0; k < this.componentsLength; k++) + for (int k = 0; k < this.ComponentsLength; k++) { int order = this.frame.ComponentOrder[k]; JpegComponent component = this.components[order]; - ref HuffmanTable dcHuffmanTable = ref this.dcHuffmanTables[component.DCHuffmanTableId]; - ref HuffmanTable acHuffmanTable = ref this.acHuffmanTables[component.ACHuffmanTableId]; + ref HuffmanTable dcHuffmanTable = ref this.DcHuffmanTables[component.DCHuffmanTableId]; + ref HuffmanTable acHuffmanTable = ref this.AcHuffmanTables[component.ACHuffmanTableId]; int h = component.HorizontalSamplingFactor; int v = component.VerticalSamplingFactor; @@ -225,8 +220,8 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder int w = component.WidthInBlocks; int h = component.HeightInBlocks; - ref HuffmanTable dcHuffmanTable = ref this.dcHuffmanTables[component.DCHuffmanTableId]; - ref HuffmanTable acHuffmanTable = ref this.acHuffmanTables[component.ACHuffmanTableId]; + ref HuffmanTable dcHuffmanTable = ref this.DcHuffmanTables[component.DCHuffmanTableId]; + ref HuffmanTable acHuffmanTable = ref this.AcHuffmanTables[component.ACHuffmanTableId]; dcHuffmanTable.Configure(); acHuffmanTable.Configure(); @@ -260,9 +255,9 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder // Logic has been adapted from libjpeg. // See Table B.3 – Scan header parameter size and values. itu-t81.pdf bool invalid = false; - if (this.spectralStart == 0) + if (this.SpectralStart == 0) { - if (this.spectralEnd != 0) + if (this.SpectralEnd != 0) { invalid = true; } @@ -270,22 +265,22 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder else { // Need not check Ss/Se < 0 since they came from unsigned bytes. - if (this.spectralEnd < this.spectralStart || this.spectralEnd > 63) + if (this.SpectralEnd < this.SpectralStart || this.SpectralEnd > 63) { invalid = true; } // AC scans may have only one component. - if (this.componentsLength != 1) + if (this.ComponentsLength != 1) { invalid = true; } } - if (this.successiveHigh != 0) + if (this.SuccessiveHigh != 0) { // Successive approximation refinement scan: must have Al = Ah-1. - if (this.successiveHigh - 1 != this.successiveLow) + if (this.SuccessiveHigh - 1 != this.SuccessiveLow) { invalid = true; } @@ -293,14 +288,14 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder // TODO: How does this affect 12bit jpegs. // According to libjpeg the range covers 8bit only? - if (this.successiveLow > 13) + if (this.SuccessiveLow > 13) { invalid = true; } if (invalid) { - JpegThrowHelper.ThrowBadProgressiveScan(this.spectralStart, this.spectralEnd, this.successiveHigh, this.successiveLow); + JpegThrowHelper.ThrowBadProgressiveScan(this.SpectralStart, this.SpectralEnd, this.SuccessiveHigh, this.SuccessiveLow); } } @@ -309,7 +304,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder this.CheckProgressiveData(); this.frame.AllocateComponents(fullScan: true); - if (this.componentsLength == 1) + if (this.ComponentsLength == 1) { this.ParseProgressiveDataNonInterleaved(); } @@ -328,11 +323,11 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder ref HuffmanScanBuffer buffer = ref this.scanBuffer; // Pre-derive the huffman table to avoid in-loop checks. - for (int k = 0; k < this.componentsLength; k++) + for (int k = 0; k < this.ComponentsLength; k++) { int order = this.frame.ComponentOrder[k]; JpegComponent component = this.components[order]; - ref HuffmanTable dcHuffmanTable = ref this.dcHuffmanTables[component.DCHuffmanTableId]; + ref HuffmanTable dcHuffmanTable = ref this.DcHuffmanTables[component.DCHuffmanTableId]; dcHuffmanTable.Configure(); } @@ -343,11 +338,11 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder // Scan an interleaved mcu... process components in order int mcuRow = mcu / mcusPerLine; int mcuCol = mcu % mcusPerLine; - for (int k = 0; k < this.componentsLength; k++) + for (int k = 0; k < this.ComponentsLength; k++) { int order = this.frame.ComponentOrder[k]; JpegComponent component = this.components[order]; - ref HuffmanTable dcHuffmanTable = ref this.dcHuffmanTables[component.DCHuffmanTableId]; + ref HuffmanTable dcHuffmanTable = ref this.DcHuffmanTables[component.DCHuffmanTableId]; int h = component.HorizontalSamplingFactor; int v = component.VerticalSamplingFactor; @@ -393,9 +388,9 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder int w = component.WidthInBlocks; int h = component.HeightInBlocks; - if (this.spectralStart == 0) + if (this.SpectralStart == 0) { - ref HuffmanTable dcHuffmanTable = ref this.dcHuffmanTables[component.DCHuffmanTableId]; + ref HuffmanTable dcHuffmanTable = ref this.DcHuffmanTables[component.DCHuffmanTableId]; dcHuffmanTable.Configure(); for (int j = 0; j < h; j++) @@ -423,7 +418,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder } else { - ref HuffmanTable acHuffmanTable = ref this.acHuffmanTables[component.ACHuffmanTableId]; + ref HuffmanTable acHuffmanTable = ref this.AcHuffmanTables[component.ACHuffmanTableId]; acHuffmanTable.Configure(); for (int j = 0; j < h; j++) @@ -502,7 +497,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder ref short blockDataRef = ref Unsafe.As(ref block); ref HuffmanScanBuffer buffer = ref this.scanBuffer; - if (this.successiveHigh == 0) + if (this.SuccessiveHigh == 0) { // First scan for DC coefficient, must be first int s = buffer.DecodeHuffman(ref dcTable); @@ -513,20 +508,20 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder s += component.DcPredictor; component.DcPredictor = s; - blockDataRef = (short)(s << this.successiveLow); + blockDataRef = (short)(s << this.SuccessiveLow); } else { // Refinement scan for DC coefficient buffer.CheckBits(); - blockDataRef |= (short)(buffer.GetBits(1) << this.successiveLow); + blockDataRef |= (short)(buffer.GetBits(1) << this.SuccessiveLow); } } private void DecodeBlockProgressiveAC(ref Block8x8 block, ref HuffmanTable acTable) { ref short blockDataRef = ref Unsafe.As(ref block); - if (this.successiveHigh == 0) + if (this.SuccessiveHigh == 0) { // MCU decoding for AC initial scan (either spectral selection, // or first pass of successive approximation). @@ -538,9 +533,9 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder ref HuffmanScanBuffer buffer = ref this.scanBuffer; ref ZigZag zigzag = ref this.dctZigZag; - int start = this.spectralStart; - int end = this.spectralEnd; - int low = this.successiveLow; + int start = this.SpectralStart; + int end = this.SpectralEnd; + int low = this.SuccessiveLow; for (int i = start; i <= end; ++i) { @@ -584,11 +579,11 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder // Refinement scan for these AC coefficients ref HuffmanScanBuffer buffer = ref this.scanBuffer; ref ZigZag zigzag = ref this.dctZigZag; - int start = this.spectralStart; - int end = this.spectralEnd; + int start = this.SpectralStart; + int end = this.SpectralEnd; - int p1 = 1 << this.successiveLow; - int m1 = (-1) << this.successiveLow; + int p1 = 1 << this.SuccessiveLow; + int m1 = (-1) << this.SuccessiveLow; int k = start; diff --git a/src/ImageSharp/Formats/Jpeg/Components/Decoder/JpegComponentPostProcessor.cs b/src/ImageSharp/Formats/Jpeg/Components/Decoder/JpegComponentPostProcessor.cs index 7ad0e87d21..a853d06fd2 100644 --- a/src/ImageSharp/Formats/Jpeg/Components/Decoder/JpegComponentPostProcessor.cs +++ b/src/ImageSharp/Formats/Jpeg/Components/Decoder/JpegComponentPostProcessor.cs @@ -2,9 +2,6 @@ // Licensed under the Apache License, Version 2.0. using System; -using System.Runtime.CompilerServices; -using System.Runtime.InteropServices; - using SixLabors.ImageSharp.Memory; namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder @@ -63,10 +60,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder public int BlockRowsPerStep { get; } /// - public void Dispose() - { - this.ColorBuffer.Dispose(); - } + public void Dispose() => this.ColorBuffer.Dispose(); /// /// Invoke for block rows, copy the result into . diff --git a/src/ImageSharp/Formats/Jpeg/Components/Decoder/JpegImagePostProcessor.cs b/src/ImageSharp/Formats/Jpeg/Components/Decoder/JpegImagePostProcessor.cs index 18b2bc6e84..26a0635244 100644 --- a/src/ImageSharp/Formats/Jpeg/Components/Decoder/JpegImagePostProcessor.cs +++ b/src/ImageSharp/Formats/Jpeg/Components/Decoder/JpegImagePostProcessor.cs @@ -5,7 +5,6 @@ using System; using System.Buffers; using System.Numerics; using System.Threading; -using SixLabors.ImageSharp.Advanced; using SixLabors.ImageSharp.Memory; using SixLabors.ImageSharp.PixelFormats; using JpegColorConverter = SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ColorConverters.JpegColorConverter; @@ -19,7 +18,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder /// (3) Color conversion form one of the -s into a buffer of RGBA values
/// (4) Packing pixels from the buffer.
/// These operations are executed in steps. - /// image rows are converted in one step, + /// image rows are converted in one step, /// which means that size of the allocated memory is limited (does not depend on ). /// internal class JpegImagePostProcessor : IDisposable @@ -29,12 +28,12 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder /// /// The number of block rows to be processed in one Step. /// - public int BlockRowsPerStep; + private readonly int blockRowsPerStep; /// /// The number of image pixel rows to be processed in one step. /// - public int PixelRowsPerStep; + private readonly int pixelRowsPerStep; /// /// Temporal buffer to store a row of colors. @@ -57,12 +56,12 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder this.RawJpeg = rawJpeg; IJpegComponent c0 = rawJpeg.Components[0]; - this.BlockRowsPerStep = c0.SamplingFactors.Height; - this.PixelRowsPerStep = this.BlockRowsPerStep * 8; + this.blockRowsPerStep = c0.SamplingFactors.Height; + this.pixelRowsPerStep = this.blockRowsPerStep * 8; - this.NumberOfPostProcessorSteps = c0.SizeInBlocks.Height / this.BlockRowsPerStep; + this.NumberOfPostProcessorSteps = c0.SizeInBlocks.Height / this.blockRowsPerStep; - var postProcessorBufferSize = new Size(c0.SizeInBlocks.Width * 8, this.PixelRowsPerStep); + var postProcessorBufferSize = new Size(c0.SizeInBlocks.Width * 8, this.pixelRowsPerStep); MemoryAllocator memoryAllocator = configuration.MemoryAllocator; this.ComponentProcessors = new JpegComponentPostProcessor[rawJpeg.Components.Length]; for (int i = 0; i < rawJpeg.Components.Length; i++) @@ -85,12 +84,12 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder public IRawJpegData RawJpeg { get; } /// - /// Gets the total number of post processor steps deduced from the height of the image and . + /// Gets the total number of post processor steps deduced from the height of the image and . /// public int NumberOfPostProcessorSteps { get; } /// - /// Gets the value of the counter that grows by each step by . + /// Gets the value of the counter that grows by each step by . /// public int PixelRowCounter { get; private set; } @@ -129,15 +128,15 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder } /// - /// Execute one step processing pixel rows into 'destination'. - /// Convert and copy row of colors into 'destination' starting at row . + /// Execute one step processing pixel rows into 'destination'. + /// Convert and copy row of colors into 'destination' starting at row . /// /// The pixel type /// The destination image public void DoPostProcessorStep(ImageFrame destination) where TPixel : unmanaged, IPixel { - int maxY = Math.Min(destination.Height, this.PixelRowCounter + PixelRowsPerStep); + int maxY = Math.Min(destination.Height, this.PixelRowCounter + this.pixelRowsPerStep); var buffers = new Buffer2D[this.ComponentProcessors.Length]; for (int i = 0; i < this.ComponentProcessors.Length; i++) @@ -159,7 +158,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder PixelOperations.Instance.FromVector4Destructive(this.configuration, this.rgbaBuffer.GetSpan().Slice(0, destRow.Length), destRow); } - this.PixelRowCounter += PixelRowsPerStep; + this.PixelRowCounter += this.pixelRowsPerStep; } } } diff --git a/src/ImageSharp/Formats/Jpeg/Components/Decoder/SpectralConverter{TPixel}.cs b/src/ImageSharp/Formats/Jpeg/Components/Decoder/SpectralConverter{TPixel}.cs index a25e756c73..1d1770aa77 100644 --- a/src/ImageSharp/Formats/Jpeg/Components/Decoder/SpectralConverter{TPixel}.cs +++ b/src/ImageSharp/Formats/Jpeg/Components/Decoder/SpectralConverter{TPixel}.cs @@ -3,9 +3,7 @@ using System; using System.Buffers; -using System.Collections.Generic; using System.Numerics; -using System.Text; using System.Threading; using SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ColorConverters; using SixLabors.ImageSharp.Memory; @@ -16,11 +14,10 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder internal sealed class SpectralConverter : SpectralConverter where TPixel : unmanaged, IPixel { - private Configuration configuration; + private readonly Configuration configuration; private CancellationToken cancellationToken; - private JpegComponentPostProcessor[] componentProcessors; private JpegColorConverter colorConverter; @@ -29,11 +26,11 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder private Buffer2D pixelBuffer; - public int BlockRowsPerStep; + private int blockRowsPerStep; - private int PixelRowsPerStep; + private int pixelRowsPerStep; - private int PixelRowCounter; + private int pixelRowCounter; public SpectralConverter(Configuration configuration, CancellationToken ct) { @@ -41,7 +38,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder this.cancellationToken = ct; } - private bool Converted => this.PixelRowCounter >= this.pixelBuffer.Height; + private bool Converted => this.pixelRowCounter >= this.pixelBuffer.Height; public Buffer2D PixelBuffer { @@ -49,7 +46,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder { if (!this.Converted) { - int steps = (int)Math.Ceiling(this.pixelBuffer.Height / (float)this.PixelRowsPerStep); + int steps = (int)Math.Ceiling(this.pixelBuffer.Height / (float)this.pixelRowsPerStep); for (int step = 0; step < steps; step++) { @@ -70,14 +67,14 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder IJpegComponent c0 = frame.Components[0]; const int blockPixelHeight = 8; - this.BlockRowsPerStep = c0.SamplingFactors.Height; - this.PixelRowsPerStep = this.BlockRowsPerStep * blockPixelHeight; + this.blockRowsPerStep = c0.SamplingFactors.Height; + this.pixelRowsPerStep = this.blockRowsPerStep * blockPixelHeight; // pixel buffer for resulting image this.pixelBuffer = allocator.Allocate2D(frame.PixelWidth, frame.PixelHeight, AllocationOptions.Clean); // component processors from spectral to Rgba32 - var postProcessorBufferSize = new Size(c0.SizeInBlocks.Width * 8, this.PixelRowsPerStep); + var postProcessorBufferSize = new Size(c0.SizeInBlocks.Width * 8, this.pixelRowsPerStep); this.componentProcessors = new JpegComponentPostProcessor[frame.Components.Length]; for (int i = 0; i < this.componentProcessors.Length; i++) { @@ -118,7 +115,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder private void ConvertNextStride(int spectralStep) { - int maxY = Math.Min(this.pixelBuffer.Height, this.PixelRowCounter + this.PixelRowsPerStep); + int maxY = Math.Min(this.pixelBuffer.Height, this.pixelRowCounter + this.pixelRowsPerStep); var buffers = new Buffer2D[this.componentProcessors.Length]; for (int i = 0; i < this.componentProcessors.Length; i++) @@ -127,9 +124,9 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder buffers[i] = this.componentProcessors[i].ColorBuffer; } - for (int yy = this.PixelRowCounter; yy < maxY; yy++) + for (int yy = this.pixelRowCounter; yy < maxY; yy++) { - int y = yy - this.PixelRowCounter; + int y = yy - this.pixelRowCounter; var values = new JpegColorConverter.ComponentValues(buffers, y); this.colorConverter.ConvertToRgba(values, this.rgbaBuffer.GetSpan()); @@ -140,7 +137,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder PixelOperations.Instance.FromVector4Destructive(this.configuration, this.rgbaBuffer.GetSpan().Slice(0, destRow.Length), destRow); } - this.PixelRowCounter += this.PixelRowsPerStep; + this.pixelRowCounter += this.pixelRowsPerStep; } } } diff --git a/src/ImageSharp/Formats/Jpeg/JpegDecoderCore.cs b/src/ImageSharp/Formats/Jpeg/JpegDecoderCore.cs index 1289ff3bff..08e6ae021f 100644 --- a/src/ImageSharp/Formats/Jpeg/JpegDecoderCore.cs +++ b/src/ImageSharp/Formats/Jpeg/JpegDecoderCore.cs @@ -97,6 +97,11 @@ namespace SixLabors.ImageSharp.Formats.Jpeg /// private AdobeMarker adobe; + /// + /// Scan decoder. + /// + private HuffmanScanDecoder scanDecoder; + /// /// Initializes a new instance of the class. /// @@ -172,8 +177,6 @@ namespace SixLabors.ImageSharp.Formats.Jpeg /// public Block8x8F[] QuantizationTables { get; private set; } - private HuffmanScanDecoder scanDecoder; - /// /// Finds the next file marker within the byte stream. /// @@ -1064,20 +1067,20 @@ namespace SixLabors.ImageSharp.Formats.Jpeg // Main reason it's not fixed here is to make this commit less intrusive // Huffman tables can be calculated directly in the scan decoder class - this.scanDecoder.dcHuffmanTables = this.dcHuffmanTables; - this.scanDecoder.acHuffmanTables = this.acHuffmanTables; + this.scanDecoder.DcHuffmanTables = this.dcHuffmanTables; + this.scanDecoder.AcHuffmanTables = this.acHuffmanTables; // This can be injectd in DRI marker callback this.scanDecoder.ResetInterval = this.resetInterval; // This can be passed as ParseEntropyCodedData() parameter as it is used only there - this.scanDecoder.componentsLength = selectorsCount; + this.scanDecoder.ComponentsLength = selectorsCount; // This is okay to inject here, might be good to wrap it in a separate struct but not really necessary - this.scanDecoder.spectralStart = spectralStart; - this.scanDecoder.spectralEnd = spectralEnd; - this.scanDecoder.successiveHigh = successiveApproximation >> 4; - this.scanDecoder.successiveLow = successiveApproximation & 15; + this.scanDecoder.SpectralStart = spectralStart; + this.scanDecoder.SpectralEnd = spectralEnd; + this.scanDecoder.SuccessiveHigh = successiveApproximation >> 4; + this.scanDecoder.SuccessiveLow = successiveApproximation & 15; this.scanDecoder.ParseEntropyCodedData(); }