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    • SixLabors.ImageSharp
      • ByteOrder
      • Color
      • ColorMatrix
      • Configuration
      • DenseMatrix<T>
      • GeometryUtilities
      • GraphicOptionsDefaultsExtensions
      • GraphicsOptions
      • IDeepCloneable
      • IDeepCloneable<T>
      • Image
      • ImageExtensions
      • ImageFormatException
      • ImageFrame
      • ImageFrameCollection
      • ImageFrameCollectionExtensions
      • ImageFrameCollection<TPixel>
      • ImageFrame<TPixel>
      • ImageInfo
      • ImageProcessingException
      • Image<TPixel>
      • IndexedImageFrame<TPixel>
      • InvalidImageContentException
      • Matrix3x2Extensions
      • MetadataExtensions
      • Number
      • PixelAccessorAction<TPixel>
      • PixelAccessorAction<TPixel1, TPixel2>
      • PixelAccessorAction<TPixel1, TPixel2, TPixel3>
      • PixelAccessor<TPixel>
      • Point
      • PointF
      • Rational
      • ReadOrigin
      • Rectangle
      • RectangleF
      • SignedRational
      • Size
      • SizeF
      • UnknownImageFormatException
    • SixLabors.ImageSharp.Advanced
      • AdvancedImageExtensions
      • IConfigurationProvider
      • IImageVisitor
      • IImageVisitorAsync
      • IRowIntervalOperation
      • IRowIntervalOperation<TBuffer>
      • IRowOperation
      • IRowOperation<TBuffer>
      • ParallelExecutionSettings
      • ParallelRowIterator
    • SixLabors.ImageSharp.ColorSpaces
      • CieLab
      • CieLch
      • CieLchuv
      • CieLuv
      • CieXyy
      • CieXyz
      • Cmyk
      • Hsl
      • Hsv
      • HunterLab
      • Illuminants
      • LinearRgb
      • Lms
      • Rgb
      • RgbWorkingSpaces
      • YCbCr
    • SixLabors.ImageSharp.ColorSpaces.Companding
      • GammaCompanding
      • LCompanding
      • Rec2020Companding
      • Rec709Companding
      • SRgbCompanding
    • SixLabors.ImageSharp.ColorSpaces.Conversion
      • CieXyChromaticityCoordinates
      • ColorSpaceConverter
      • ColorSpaceConverterOptions
      • GammaWorkingSpace
      • IChromaticAdaptation
      • LWorkingSpace
      • LmsAdaptationMatrix
      • Rec2020WorkingSpace
      • Rec709WorkingSpace
      • RgbPrimariesChromaticityCoordinates
      • RgbWorkingSpace
      • SRgbWorkingSpace
      • VonKriesChromaticAdaptation
    • SixLabors.ImageSharp.Compression.Zlib
      • DeflateCompressionLevel
    • SixLabors.ImageSharp.Diagnostics
      • MemoryDiagnostics
      • UndisposedAllocationDelegate
    • SixLabors.ImageSharp.Formats
      • DecoderOptions
      • IImageDecoder
      • IImageEncoder
      • IImageFormat
      • IImageFormatConfigurationModule
      • IImageFormatDetector
      • IImageFormat<TFormatMetadata>
      • IImageFormat<TFormatMetadata, TFormatFrameMetadata>
      • ISpecializedDecoderOptions
      • ISpecializedImageDecoder<T>
      • ImageDecoder
      • ImageEncoder
      • ImageFormatManager
      • PixelTypeInfo
      • QuantizingImageEncoder
      • SpecializedImageDecoder<T>
    • SixLabors.ImageSharp.Formats.Bmp
      • BmpBitsPerPixel
      • BmpConfigurationModule
      • BmpDecoder
      • BmpDecoderOptions
      • BmpEncoder
      • BmpFileMarkerType
      • BmpFormat
      • BmpImageFormatDetector
      • BmpInfoHeaderType
      • BmpMetadata
      • RleSkippedPixelHandling
    • SixLabors.ImageSharp.Formats.Gif
      • GifColorTableMode
      • GifConfigurationModule
      • GifDecoder
      • GifDisposalMethod
      • GifEncoder
      • GifFormat
      • GifFrameMetadata
      • GifImageFormatDetector
      • GifMetadata
      • IGifExtension
    • SixLabors.ImageSharp.Formats.Jpeg
      • JpegConfigurationModule
      • JpegDecoder
      • JpegDecoderOptions
      • JpegDecoderResizeMode
      • JpegEncoder
      • JpegEncodingColor
      • JpegFormat
      • JpegImageFormatDetector
      • JpegMetadata
    • SixLabors.ImageSharp.Formats.Jpeg.Components.Encoder
      • HuffmanSpec
    • SixLabors.ImageSharp.Formats.Pbm
      • PbmColorType
      • PbmComponentType
      • PbmConfigurationModule
      • PbmDecoder
      • PbmEncoder
      • PbmEncoding
      • PbmFormat
      • PbmImageFormatDetector
      • PbmMetadata
    • SixLabors.ImageSharp.Formats.Png
      • PngBitDepth
      • PngBlendMethod
      • PngChunkFilter
      • PngColorType
      • PngConfigurationModule
      • PngCrcChunkHandling
      • PngDecoder
      • PngDecoderOptions
      • PngDisposalMethod
      • PngEncoder
      • PngFilterMethod
      • PngFormat
      • PngFrameMetadata
      • PngImageFormatDetector
      • PngInterlaceMode
      • PngMetadata
      • PngTransparentColorMode
    • SixLabors.ImageSharp.Formats.Png.Chunks
      • PngTextData
    • SixLabors.ImageSharp.Formats.Qoi
      • QoiChannels
      • QoiColorSpace
      • QoiConfigurationModule
      • QoiEncoder
      • QoiFormat
      • QoiImageFormatDetector
      • QoiMetadata
    • SixLabors.ImageSharp.Formats.Tga
      • TgaBitsPerPixel
      • TgaCompression
      • TgaConfigurationModule
      • TgaDecoder
      • TgaEncoder
      • TgaFormat
      • TgaImageFormatDetector
      • TgaImageType
      • TgaImageTypeExtensions
      • TgaMetadata
    • SixLabors.ImageSharp.Formats.Tiff
      • TiffBitsPerPixel
      • TiffBitsPerSample
      • TiffConfigurationModule
      • TiffDecoder
      • TiffEncoder
      • TiffFormat
      • TiffFormatType
      • TiffFrameMetadata
      • TiffImageFormatDetector
      • TiffMetadata
    • SixLabors.ImageSharp.Formats.Tiff.Compression
      • FaxCompressionOptions
    • SixLabors.ImageSharp.Formats.Tiff.Compression.Decompressors
      • LzwString
    • SixLabors.ImageSharp.Formats.Tiff.Constants
      • TiffCompression
      • TiffInkSet
      • TiffNewSubfileType
      • TiffPhotometricInterpretation
      • TiffPlanarConfiguration
      • TiffPredictor
      • TiffSampleFormat
      • TiffSubfileType
    • SixLabors.ImageSharp.Formats.Webp
      • BackgroundColorHandling
      • WebpBitsPerPixel
      • WebpBlendMethod
      • WebpConfigurationModule
      • WebpDecoder
      • WebpDecoderOptions
      • WebpDisposalMethod
      • WebpEncoder
      • WebpEncodingMethod
      • WebpFileFormatType
      • WebpFormat
      • WebpFrameMetadata
      • WebpImageFormatDetector
      • WebpMetadata
      • WebpTransparentColorMode
    • SixLabors.ImageSharp.Memory
      • AllocationOptions
      • Buffer2DExtensions
      • Buffer2DRegion<T>
      • Buffer2D<T>
      • IMemoryGroup<T>
      • InvalidMemoryOperationException
      • MemoryAllocator
      • MemoryAllocatorExtensions
      • MemoryAllocatorOptions
      • RowInterval
      • SimpleGcMemoryAllocator
    • SixLabors.ImageSharp.Metadata
      • ImageFrameMetadata
      • ImageMetadata
      • PixelResolutionUnit
    • SixLabors.ImageSharp.Metadata.Profiles.Cicp
      • CicpColorPrimaries
      • CicpMatrixCoefficients
      • CicpProfile
      • CicpTransferCharacteristics
    • SixLabors.ImageSharp.Metadata.Profiles.Exif
      • EncodedString
      • EncodedString.CharacterCode
      • ExifDataType
      • ExifOrientationMode
      • ExifParts
      • ExifProfile
      • ExifTag
      • ExifTag<TValueType>
      • IExifValue
      • IExifValue<TValueType>
    • SixLabors.ImageSharp.Metadata.Profiles.Icc
      • IccColorSpaceType
      • IccDeviceAttribute
      • IccPrimaryPlatformType
      • IccProfile
      • IccProfileClass
      • IccProfileFlag
      • IccProfileHeader
      • IccProfileId
      • IccProfileTag
      • IccRenderingIntent
      • IccTagDataEntry
      • IccTypeSignature
      • IccVersion
      • InvalidIccProfileException
    • SixLabors.ImageSharp.Metadata.Profiles.Iptc
      • IptcProfile
      • IptcTag
      • IptcTagExtensions
      • IptcValue
    • SixLabors.ImageSharp.Metadata.Profiles.Xmp
      • XmpProfile
    • SixLabors.ImageSharp.PixelFormats
      • A8
      • Abgr32
      • Argb32
      • Bgr24
      • Bgr565
      • Bgra32
      • Bgra4444
      • Bgra5551
      • Byte4
      • HalfSingle
      • HalfVector2
      • HalfVector4
      • IPackedVector<TPacked>
      • IPixel
      • IPixel<TSelf>
      • L16
      • L8
      • La16
      • La32
      • NormalizedByte2
      • NormalizedByte4
      • NormalizedShort2
      • NormalizedShort4
      • PixelAlphaCompositionMode
      • PixelAlphaRepresentation
      • PixelBlender<TPixel>
      • PixelColorBlendingMode
      • PixelConversionModifiers
      • PixelOperations<TPixel>
      • Rg32
      • Rgb24
      • Rgb48
      • Rgba1010102
      • Rgba32
      • Rgba64
      • RgbaVector
      • Short2
      • Short4
    • SixLabors.ImageSharp.Processing
      • AdaptiveThresholdExtensions
      • AffineTransformBuilder
      • AnchorPositionMode
      • AutoOrientExtensions
      • BackgroundColorExtensions
      • BinaryDitherExtensions
      • BinaryThresholdExtensions
      • BinaryThresholdMode
      • BlackWhiteExtensions
      • BokehBlurExtensions
      • BoxBlurExtensions
      • BrightnessExtensions
      • ColorBlindnessExtensions
      • ColorBlindnessMode
      • ContrastExtensions
      • CropExtensions
      • DetectEdgesExtensions
      • DitherExtensions
      • DrawImageExtensions
      • EntropyCropExtensions
      • FilterExtensions
      • FlipExtensions
      • FlipMode
      • GaussianBlurExtensions
      • GaussianSharpenExtensions
      • GlowExtensions
      • GrayscaleExtensions
      • GrayscaleMode
      • HistogramEqualizationExtensions
      • HueExtensions
      • IImageProcessingContext
      • InvertExtensions
      • KnownDitherings
      • KnownEdgeDetectorKernels
      • KnownFilterMatrices
      • KnownQuantizers
      • KnownResamplers
      • KodachromeExtensions
      • LightnessExtensions
      • LomographExtensions
      • MedianBlurExtensions
      • OilPaintExtensions
      • OpacityExtensions
      • PadExtensions
      • PixelRowDelegateExtensions
      • PixelRowOperation
      • PixelRowOperation<T>
      • PixelateExtensions
      • PolaroidExtensions
      • ProcessingExtensions
      • ProjectiveTransformBuilder
      • QuantizeExtensions
      • ResizeExtensions
      • ResizeMode
      • ResizeOptions
      • RotateExtensions
      • RotateFlipExtensions
      • RotateMode
      • SaturateExtensions
      • SepiaExtensions
      • SkewExtensions
      • SwizzleExtensions
      • TaperCorner
      • TaperSide
      • TransformExtensions
      • TransformSpace
      • VignetteExtensions
    • SixLabors.ImageSharp.Processing.Processors
      • CloningImageProcessor
      • CloningImageProcessor<TPixel>
      • ICloningImageProcessor
      • ICloningImageProcessor<TPixel>
      • IImageProcessor
      • IImageProcessor<TPixel>
      • ImageProcessor<TPixel>
    • SixLabors.ImageSharp.Processing.Processors.Binarization
      • AdaptiveThresholdProcessor
      • BinaryThresholdProcessor
    • SixLabors.ImageSharp.Processing.Processors.Convolution
      • BokehBlurProcessor
      • BorderWrappingMode
      • BoxBlurProcessor
      • EdgeDetector2DKernel
      • EdgeDetector2DProcessor
      • EdgeDetectorCompassKernel
      • EdgeDetectorCompassProcessor
      • EdgeDetectorKernel
      • EdgeDetectorProcessor
      • GaussianBlurProcessor
      • GaussianSharpenProcessor
      • MedianBlurProcessor
    • SixLabors.ImageSharp.Processing.Processors.Dithering
      • ErrorDither
      • IDither
      • IPaletteDitherImageProcessor<TPixel>
      • OrderedDither
      • PaletteDitherProcessor
    • SixLabors.ImageSharp.Processing.Processors.Drawing
      • DrawImageProcessor
    • SixLabors.ImageSharp.Processing.Processors.Effects
      • IPixelRowDelegate
      • OilPaintingProcessor
      • PixelateProcessor
    • SixLabors.ImageSharp.Processing.Processors.Filters
      • AchromatomalyProcessor
      • AchromatopsiaProcessor
      • BlackWhiteProcessor
      • BrightnessProcessor
      • ContrastProcessor
      • DeuteranomalyProcessor
      • DeuteranopiaProcessor
      • FilterProcessor
      • GrayscaleBt601Processor
      • GrayscaleBt709Processor
      • HueProcessor
      • InvertProcessor
      • KodachromeProcessor
      • LightnessProcessor
      • LomographProcessor
      • OpacityProcessor
      • PolaroidProcessor
      • ProtanomalyProcessor
      • ProtanopiaProcessor
      • SaturateProcessor
      • SepiaProcessor
      • TritanomalyProcessor
      • TritanopiaProcessor
    • SixLabors.ImageSharp.Processing.Processors.Normalization
      • AdaptiveHistogramEqualizationProcessor
      • AdaptiveHistogramEqualizationSlidingWindowProcessor
      • AutoLevelProcessor
      • GlobalHistogramEqualizationProcessor
      • HistogramEqualizationMethod
      • HistogramEqualizationOptions
      • HistogramEqualizationProcessor
    • SixLabors.ImageSharp.Processing.Processors.Overlays
      • BackgroundColorProcessor
      • GlowProcessor
      • VignetteProcessor
    • SixLabors.ImageSharp.Processing.Processors.Quantization
      • ColorMatchingMode
      • DefaultPixelSamplingStrategy
      • ExtensivePixelSamplingStrategy
      • IPixelSamplingStrategy
      • IQuantizer
      • IQuantizer<TPixel>
      • OctreeQuantizer
      • OctreeQuantizer<TPixel>
      • PaletteQuantizer
      • QuantizeProcessor
      • QuantizerConstants
      • QuantizerOptions
      • QuantizerUtilities
      • WebSafePaletteQuantizer
      • WernerPaletteQuantizer
      • WuQuantizer
    • SixLabors.ImageSharp.Processing.Processors.Transforms
      • AffineTransformProcessor
      • AutoOrientProcessor
      • BicubicResampler
      • BoxResampler
      • CropProcessor
      • CubicResampler
      • DegenerateTransformException
      • EntropyCropProcessor
      • FlipProcessor
      • IResampler
      • IResamplingTransformImageProcessor<TPixel>
      • ISwizzler
      • LanczosResampler
      • NearestNeighborResampler
      • ProjectiveTransformProcessor
      • ResizeProcessor
      • RotateProcessor
      • SkewProcessor
      • SwizzleProcessor<TSwizzler>
      • TriangleResampler
      • WelchResampler

    Class PngDecoder

    Decoder for generating an image out of a png encoded stream.

    Inheritance
    object
    ImageDecoder
    SpecializedImageDecoder<PngDecoderOptions>
    PngDecoder
    Implements
    ISpecializedImageDecoder<PngDecoderOptions>
    IImageDecoder
    Inherited Members
    SpecializedImageDecoder<PngDecoderOptions>.Decode<TPixel>(PngDecoderOptions, Stream)
    SpecializedImageDecoder<PngDecoderOptions>.Decode(PngDecoderOptions, Stream)
    SpecializedImageDecoder<PngDecoderOptions>.DecodeAsync<TPixel>(PngDecoderOptions, Stream, CancellationToken)
    SpecializedImageDecoder<PngDecoderOptions>.DecodeAsync(PngDecoderOptions, Stream, CancellationToken)
    ImageDecoder.Decode<TPixel>(DecoderOptions, Stream)
    ImageDecoder.Decode(DecoderOptions, Stream)
    ImageDecoder.DecodeAsync<TPixel>(DecoderOptions, Stream, CancellationToken)
    ImageDecoder.DecodeAsync(DecoderOptions, Stream, CancellationToken)
    ImageDecoder.Identify(DecoderOptions, Stream)
    ImageDecoder.IdentifyAsync(DecoderOptions, Stream, CancellationToken)
    object.Equals(object)
    object.Equals(object, object)
    object.GetHashCode()
    object.GetType()
    object.ReferenceEquals(object, object)
    object.ToString()
    Namespace: SixLabors.ImageSharp.Formats.Png
    Assembly: SixLabors.ImageSharp.dll
    Syntax
    public sealed class PngDecoder : SpecializedImageDecoder<PngDecoderOptions>, ISpecializedImageDecoder<PngDecoderOptions>, IImageDecoder

    Properties

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    Instance

    Gets the shared instance.

    Declaration
    public static PngDecoder Instance { get; }
    Property Value
    Type Description
    PngDecoder

    Methods

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    CreateDefaultSpecializedOptions(DecoderOptions)

    A factory method for creating the default specialized options.

    Declaration
    protected override PngDecoderOptions CreateDefaultSpecializedOptions(DecoderOptions options)
    Parameters
    Type Name Description
    DecoderOptions options

    The general decoder options.

    Returns
    Type Description
    PngDecoderOptions

    The new PngDecoderOptions.

    Overrides
    SpecializedImageDecoder<PngDecoderOptions>.CreateDefaultSpecializedOptions(DecoderOptions)
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    Decode(PngDecoderOptions, Stream, CancellationToken)

    Decodes the image from the specified stream to an Image of a specific pixel type.

    Declaration
    protected override Image Decode(PngDecoderOptions options, Stream stream, CancellationToken cancellationToken)
    Parameters
    Type Name Description
    PngDecoderOptions options

    The specialized decoder options.

    Stream stream

    The Stream containing image data.

    CancellationToken cancellationToken

    The token to monitor for cancellation requests.

    Returns
    Type Description
    Image

    The Image<TPixel>.

    Overrides
    SpecializedImageDecoder<PngDecoderOptions>.Decode(PngDecoderOptions, Stream, CancellationToken)
    Remarks

    This method is designed to support the ImageSharp internal infrastructure and is not recommended for direct use.

    Exceptions
    Type Condition
    ImageFormatException

    Thrown if the encoded image contains errors.

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    Decode<TPixel>(PngDecoderOptions, Stream, CancellationToken)

    Decodes the image from the specified stream to an Image<TPixel> of a specific pixel type.

    Declaration
    protected override Image<TPixel> Decode<TPixel>(PngDecoderOptions options, Stream stream, CancellationToken cancellationToken) where TPixel : unmanaged, IPixel<TPixel>
    Parameters
    Type Name Description
    PngDecoderOptions options

    The specialized decoder options.

    Stream stream

    The Stream containing image data.

    CancellationToken cancellationToken

    The token to monitor for cancellation requests.

    Returns
    Type Description
    Image<TPixel>

    The Image<TPixel>.

    Type Parameters
    Name Description
    TPixel

    The pixel format.

    Overrides
    SpecializedImageDecoder<PngDecoderOptions>.Decode<TPixel>(PngDecoderOptions, Stream, CancellationToken)
    Remarks

    This method is designed to support the ImageSharp internal infrastructure and is not recommended for direct use.

    Exceptions
    Type Condition
    ImageFormatException

    Thrown if the encoded image contains errors.

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    Identify(DecoderOptions, Stream, CancellationToken)

    Reads the raw image information from the specified stream.

    Declaration
    protected override ImageInfo Identify(DecoderOptions options, Stream stream, CancellationToken cancellationToken)
    Parameters
    Type Name Description
    DecoderOptions options

    The general decoder options.

    Stream stream

    The Stream containing image data.

    CancellationToken cancellationToken

    The token to monitor for cancellation requests.

    Returns
    Type Description
    ImageInfo

    The ImageInfo object.

    Overrides
    ImageDecoder.Identify(DecoderOptions, Stream, CancellationToken)
    Remarks

    This method is designed to support the ImageSharp internal infrastructure and is not recommended for direct use.

    Exceptions
    Type Condition
    ImageFormatException

    Thrown if the encoded image contains errors.

    Implements

    ISpecializedImageDecoder<T>
    IImageDecoder
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