C# Класс SwfDotNet.IO.Tags.DefineBitsJpeg3Tag

DefineBitsJpeg3Tag is used to define a transparent JPEG encoded image.

It extends the DefineBitsJpeg2Tag class by including a separate zlib compressed table of alpha channel values. This allows the transparency of existing JPEG encoded images to be changed without re-encoding the original image.

Although the encoding table defines how the image is compressed it is not essential. If a DefineBitsJpeg3Tag object is created with an empty encoding table then the Flash Player will still display the JPEG image correctly. The empty encoding table is not a null object. It contains four bytes: 0xFF, 0xD9, 0xFF, 0xD8. Note however that this is reversed from StartOfImage (SOI, 0xFFD8) and EndOfImage (EOI, 0xFFD9) tags defined in the JPEG file format specification. This appears to be a bug in Flash. However the order is preserved to ensure compatibility although code has been tested with the normal order for the tags and the images were displayed correctly.

This tag was introduced in Flash 3.

Наследование: DefineBitsJpeg2Tag

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Открытые методы

Метод	Описание
DefineBitsJpeg3Tag ( ) : System	Creates a new DefineBitsJpeg3Tag instance.
DefineBitsJpeg3Tag ( ushort id, byte image, byte alpha ) : System	Creates a new DefineBitsJpeg3Tag instance.
FromFile ( ushort characterId, string fileName ) : DefineBitsJpeg3Tag	Construct a new DefineBitsJpeg3Tag object from a file.
FromImage ( ushort characterId, Image image ) : DefineBitsJpeg3Tag	Construct a new DefineBitsJpeg3Tag object from an image object.
FromStream ( ushort characterId, Stream stream ) : DefineBitsJpeg3Tag	Construct a new DefineBitsJpeg3Tag object from a stream.
GetSizeOf ( ) : int	Gets the size of.
ReadData ( byte version, BufferedBinaryReader binaryReader ) : void	see base class
UpdateData ( byte version ) : void	see base class

Описание методов

DefineBitsJpeg3Tag() публичный Метод

Creates a new DefineBitsJpeg3Tag instance.

public DefineBitsJpeg3Tag ( ) : System
Результат	System

DefineBitsJpeg3Tag() публичный Метод

Creates a new DefineBitsJpeg3Tag instance.

public DefineBitsJpeg3Tag ( ushort id, byte image, byte alpha ) : System
id	ushort	Id.
image	byte	Image.
alpha	byte	Alpha.
Результат	System

FromFile() публичный статический Метод

Construct a new DefineBitsJpeg3Tag object from a file.

public static FromFile ( ushort characterId, string fileName ) : DefineBitsJpeg3Tag
characterId	ushort	Character id.
fileName	string	Name of the file.
Результат	DefineBitsJpeg3Tag

FromImage() публичный статический Метод

Construct a new DefineBitsJpeg3Tag object from an image object.

public static FromImage ( ushort characterId, Image image ) : DefineBitsJpeg3Tag
characterId	ushort	Character id.
image	Image	Image.
Результат	DefineBitsJpeg3Tag

FromStream() публичный статический Метод

Construct a new DefineBitsJpeg3Tag object from a stream.

public static FromStream ( ushort characterId, Stream stream ) : DefineBitsJpeg3Tag
characterId	ushort	Character id.
stream	Stream	Stream.
Результат	DefineBitsJpeg3Tag

GetSizeOf() публичный Метод

Gets the size of.

public GetSizeOf ( ) : int
Результат	int

ReadData() публичный Метод

see base class

public ReadData ( byte version, BufferedBinaryReader binaryReader ) : void
version	byte
binaryReader	SwfDotNet.IO.Utils.BufferedBinaryReader
Результат	void

UpdateData() публичный Метод

see base class

public UpdateData ( byte version ) : void
version	byte
Результат	void