JpegDecoder Class

An ImageDecoder used to read JPEG images from a Stream.

Inheritance Hierarchy

System.Object
Atalasoft.Imaging.Codec.ImageDecoder
Atalasoft.Imaging.Codec.JpegDecoder

Namespace: Atalasoft.Imaging.Codec
Assembly: Atalasoft.dotImage (in Atalasoft.dotImage.dll) Version: 11.4.0.9.0.377 (.NET 4.5.2, x86)

Syntax

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public class JpegDecoder : ImageDecoder, 
	IScaledDecoder

Public Class JpegDecoder
	Inherits ImageDecoder
	Implements IScaledDecoder

The JpegDecoder type exposes the following members.

Constructors

	Name	Description
	JpegDecoder()	Initializes a new instance of a JpegDecoder.
	JpegDecoder(JpegScaleFactor)	Initializes a new instance of a JpegDecoder specifying the Jpeg scaling factor.

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Properties

	Name	Description
	ScaleFactor	Gets or sets a value indicating the scale factor to use when reading Jpeg's.
	SupportedImageType	Obsolete. Returns a Jpeg ImageType enumeration value. (Overrides ImageDecoder.SupportedImageType.)

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Methods

	Name	Description
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetBestScale	Gets the best scale given a requested scale factor. For a JPEG, this would result in either 1, 1/2, 1/4, 1/16, or 1/32
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetImageInfo	Retreive information from a Jpeg image stored in a Stream without decoding the image data. (Overrides ImageDecoder.GetImageInfo(Stream).)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	IsValidFormat	Returns true if the specified Stream contains a Jpeg image. (Overrides ImageDecoder.IsValidFormat(Stream).)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	Read	Returns an AtalaImage from a Stream containing a Jpeg encoded image. (Overrides ImageDecoder.Read(Stream, ProgressEventHandler).)
	ReadScaled	Gets an AtalaImage of the requested scale.
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Remarks

By default, when opening a Jpeg image using the AtalaImage or Workspace objects, this decoder will automatically be selected from the %RegisteredDecoders% and does not have to be explicitly set.

Jpeg images can store metadata such as EXIF and IPTC into the images. See the %Atalasoft.Imaging.Metadata% namespace for more information on reading this information from a Jpeg image.

Reference

Atalasoft.Imaging.Codec Namespace