public override void InjectFrameData(JpegFrame frame, IRawJpegData jpegData)
{
this.frame = frame;
var spectralComponents = new LibJpegTools.ComponentData[frame.ComponentCount];
for (int i = 0; i < spectralComponents.Length; i++)
{
JpegComponent component = frame.Components[i];
spectralComponents[i] = new LibJpegTools.ComponentData(component.WidthInBlocks, component.HeightInBlocks, component.Index);
}
this.spectralData = new LibJpegTools.SpectralData(spectralComponents);
}
/// <summary>
/// Initializes a new instance of the <see cref="JpegImagePostProcessor"/> class.
/// </summary>
/// <param name="configuration">The <see cref="Configuration"/> to configure internal operations.</param>
/// <param name="rawJpeg">The <see cref="IRawJpegData"/> representing the uncompressed spectral Jpeg data</param>
public JpegImagePostProcessor(Configuration configuration, IRawJpegData rawJpeg)
{
this.configuration = configuration;
this.RawJpeg = rawJpeg;
IJpegComponent c0 = rawJpeg.Components.First();
this.NumberOfPostProcessorSteps = c0.SizeInBlocks.Height / BlockRowsPerStep;
this.PostProcessorBufferSize = new Size(c0.SizeInBlocks.Width * 8, PixelRowsPerStep);
MemoryAllocator memoryAllocator = configuration.MemoryAllocator;
this.ComponentProcessors = rawJpeg.Components.Select(c => new JpegComponentPostProcessor(memoryAllocator, this, c)).ToArray();
this.rgbaBuffer = memoryAllocator.Allocate <Vector4>(rawJpeg.ImageSizeInPixels.Width);
this.colorConverter = JpegColorConverter.GetConverter(rawJpeg.ColorSpace);
}
/// <summary>
/// Initializes a new instance of the <see cref="JpegImagePostProcessor"/> class.
/// </summary>
/// <param name="configuration">The <see cref="Configuration"/> to configure internal operations.</param>
/// <param name="rawJpeg">The <see cref="IRawJpegData"/> representing the uncompressed spectral Jpeg data</param>
public JpegImagePostProcessor(IRawJpegData rawJpeg)
{
this.RawJpeg = rawJpeg;
IJpegComponent c0 = rawJpeg.Components[0];
this.NumberOfPostProcessorSteps = c0.SizeInBlocks.Height / BlockRowsPerStep;
this.PostProcessorBufferSize = new Size(c0.SizeInBlocks.Width * 8, PixelRowsPerStep);
this.ComponentProcessors = new JpegComponentPostProcessor[rawJpeg.Components.Length];
for (int i = 0; i < rawJpeg.Components.Length; i++)
{
this.ComponentProcessors[i] = new JpegComponentPostProcessor(this, rawJpeg.Components[i]);
}
this.rgbaBuffer = MemoryGroup <Vector4> .Allocate(rawJpeg.ImageSizeInPixels.Width);
this.colorConverter = JpegColorConverter.GetConverter(rawJpeg.ColorSpace, rawJpeg.Precision);
}
public override void InjectFrameData(JpegFrame frame, IRawJpegData jpegData)
{
}
/// <inheritdoc/> protected override JpegColorConverter GetColorConverter(JpegFrame frame, IRawJpegData jpegData) => JpegColorConverter.GetConverter(JpegColorSpace.RGB, frame.Precision);
/// <summary>
/// Initializes a new instance of the <see cref="JpegComponentPostProcessor"/> class.
/// </summary>
public JpegComponentPostProcessor(MemoryAllocator memoryAllocator, JpegFrame frame, IRawJpegData rawJpeg, Size postProcessorBufferSize, IJpegComponent component)
{
this.frame = frame;
this.component = component;
this.rawJpeg = rawJpeg;
this.blockAreaSize = this.component.SubSamplingDivisors * 8;
this.ColorBuffer = memoryAllocator.Allocate2DOveraligned <float>(
postProcessorBufferSize.Width,
postProcessorBufferSize.Height,
this.blockAreaSize.Height);
this.blockRowsPerStep = postProcessorBufferSize.Height / 8 / this.component.SubSamplingDivisors.Height;
}
/// <summary> /// Gets the color converter. /// </summary> /// <param name="frame">The jpeg frame with the color space to convert to.</param> /// <param name="jpegData">The raw JPEG data.</param> /// <returns>The color converter.</returns> protected virtual JpegColorConverterBase GetColorConverter(JpegFrame frame, IRawJpegData jpegData) => JpegColorConverterBase.GetConverter(jpegData.ColorSpace, frame.Precision);
/// <summary> /// Injects jpeg image decoding metadata. /// </summary> /// <remarks> /// This is guaranteed to be called only once at SOF marker by <see cref="HuffmanScanDecoder"/>. /// </remarks> /// <param name="frame"><see cref="JpegFrame"/> instance containing decoder-specific parameters.</param> /// <param name="jpegData"><see cref="IRawJpegData"/> instance containing decoder-specific parameters.</param> public abstract void InjectFrameData(JpegFrame frame, IRawJpegData jpegData);
/// <summary> /// Gets the color converter. /// </summary> /// <param name="frame">The jpeg frame with the color space to convert to.</param> /// <param name="jpegData">The raw JPEG data.</param> /// <returns>The color converter.</returns> public virtual JpegColorConverter GetColorConverter(JpegFrame frame, IRawJpegData jpegData) => JpegColorConverter.GetConverter(jpegData.ColorSpace, frame.Precision);
internal JpegBitmapLoader(IRawJpegData rawData, int imageWidth, int imageHeight)
{
this.RawData = rawData;
this.ImageHeight = imageHeight;
this.ImageWidth = imageWidth;
}
