C# Class SwfDotNet.IO.Tags.DefineBitsLossLessTag

DefineBitsLossLessTag is used to define an image compressed using the lossless zlib compression algorithm.

The class supports color-mapped images where the image data contains an index into a color table or images where the image data specifies the color directly.

For color-mapped images the color table contains up to 256, 24-bit colors. The image contains one byte for each pixel which is an index into the table to specify the color for that pixel. The color table and the image data are compressed as a single block, with the color table placed before the image.

For images where the color is specified directly, the image data contains either 16 or 24 bit color values. For 16-bit color values the most significant bit is zero followed by three, 5-bit fields for the red, green and blue channels.

Four bytes are used to represent 24-bit colors. The first byte is always set to zero and the following bytes contain the color values for the red, green and blue color channels.

The number of bytes in each row of an image must be aligned to a 32-bit word boundary. For example if an image if an icon is 25 pixels wide, then for an 8-bit color mapped image an additional three bytes (0x00) must be used to pad each row; for a 16-bit direct mapped color image an additional two bytes must be used as padding.

The image data is stored in zlib compressed form within the object. For color-mapped images the compressed data contains the color table followed by the image data. The color table is omitted for direct-mapped images.

This tag was introduced in Flash 2.

Inheritance: BaseTag, DefineTag

Show file Open project: bladecoding/SwfExport Class Usage Examples

Public Methods

Method	Description
DecompileToFile ( string fileName ) : void	Decompiles to file.
DecompileToImage ( ) : Image	Decompiles to image.
DefineBitsLossLessTag ( ) : System	Creates a new DefineBitsLossLessTag instance.
DefineBitsLossLessTag ( ushort characterId, byte bitmapFormat, ushort bitmapWidth, ushort bitmapHeight, byte bitmapColorTableSize ) : System	constructor.
DefineBitsLossLessTag ( ushort characterId, byte bitmapFormat, ushort bitmapWidth, ushort bitmapHeight, byte bitmapColorTableSize, BitmapColorData zlibBitmapData ) : System	constructor.
DefineBitsLossLessTag ( ushort characterId, byte bitmapFormat, ushort bitmapWidth, ushort bitmapHeight, byte bitmapColorTableSize, ColorMapData zlibBitmapData ) : System	constructor.
FromFile ( ushort characterId, string fileName ) : DefineBitsLossLessTag	Construct a new DefineBitsLossLessTag object from a file.
FromImage ( ushort characterId, Image image ) : DefineBitsLossLessTag	Construct a new DefineBitsLossLessTag object from an image object.
FromStream ( ushort characterId, Stream stream ) : DefineBitsLossLessTag	Construct a new DefineBitsLossLessTag object from a stream.
GetSizeOf ( int sizeOfCompressedData ) : int	Gets the size of.
ReadData ( byte version, BufferedBinaryReader binaryReader ) : void	see base class
Serialize ( XmlWriter writer ) : void	Serializes the specified writer.
UpdateData ( byte version ) : void	see base class

Private Methods

Method	Description
DecompileToStream ( Stream stream ) : void	Decompiles to stream.

Method Details

DecompileToFile() public method

Decompiles to file.

public DecompileToFile ( string fileName ) : void
fileName	string	Name of the file.
return	void

DecompileToImage() public method

Decompiles to image.

public DecompileToImage ( ) : Image
return	Image

DefineBitsLossLessTag() public method

Creates a new DefineBitsLossLessTag instance.

public DefineBitsLossLessTag ( ) : System
return	System

DefineBitsLossLessTag() public method

constructor.

public DefineBitsLossLessTag ( ushort characterId, byte bitmapFormat, ushort bitmapWidth, ushort bitmapHeight, byte bitmapColorTableSize ) : System
characterId	ushort	id for this character
bitmapFormat	byte	Format of compressed data
bitmapWidth	ushort	Width of bitmap image
bitmapHeight	ushort	Height of bitmap image
bitmapColorTableSize	byte	actual number of colors in the color table
return	System

DefineBitsLossLessTag() public method

constructor.

public DefineBitsLossLessTag ( ushort characterId, byte bitmapFormat, ushort bitmapWidth, ushort bitmapHeight, byte bitmapColorTableSize, BitmapColorData zlibBitmapData ) : System
characterId	ushort	id for this character
bitmapFormat	byte	Format of compressed data
bitmapWidth	ushort	Width of bitmap image
bitmapHeight	ushort	Height of bitmap image
bitmapColorTableSize	byte	actual number of colors in the color table
zlibBitmapData	SwfDotNet.IO.Tags.Types.BitmapColorData	zlib compressed bitmap data
return	System

DefineBitsLossLessTag() public method

constructor.

public DefineBitsLossLessTag ( ushort characterId, byte bitmapFormat, ushort bitmapWidth, ushort bitmapHeight, byte bitmapColorTableSize, ColorMapData zlibBitmapData ) : System
characterId	ushort	id for this character
bitmapFormat	byte	Format of compressed data
bitmapWidth	ushort	Width of bitmap image
bitmapHeight	ushort	Height of bitmap image
bitmapColorTableSize	byte	actual number of colors in the color table
zlibBitmapData	SwfDotNet.IO.Tags.Types.ColorMapData	zlib compressed bitmap data
return	System

FromFile() public static method

Construct a new DefineBitsLossLessTag object from a file.

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

FromImage() public static method

Construct a new DefineBitsLossLessTag object from an image object.

public static FromImage ( ushort characterId, Image image ) : DefineBitsLossLessTag
characterId	ushort	Character id.
image	Image	Image.
return	DefineBitsLossLessTag

FromStream() public static method

Construct a new DefineBitsLossLessTag object from a stream.

public static FromStream ( ushort characterId, Stream stream ) : DefineBitsLossLessTag
characterId	ushort	Character id.
stream	Stream	Stream.
return	DefineBitsLossLessTag

GetSizeOf() public method

Gets the size of.

public GetSizeOf ( int sizeOfCompressedData ) : int
sizeOfCompressedData	int
return	int

ReadData() public method

see base class

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

Serialize() public method

Serializes the specified writer.

public Serialize ( XmlWriter writer ) : void
writer	System.Xml.XmlWriter	Writer.
return	void

UpdateData() public method

see base class

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