C# Class Hjg.Pngcs.Chunks.ChunkRaw

Wraps the raw chunk data

Short lived object, to be created while serialing/deserializing Do not reuse it for different chunks See http://www.libpng.org/pub/png/spec/1.2/PNG-Chunks.html

显示文件 Open project: devedse/DeveMazeGenerator Class Usage Examples

Public Properties

Property	Type	Description
Data	byte[]
Id	String
IdBytes	byte[]
Len	int

Public Methods

Method	Description
ToString ( ) : String	Just id and length
setOffset ( long offset ) : void

Private Methods

Method	Description
AllocData ( ) : void
ChunkRaw ( int length, String idb, bool alloc ) : System	Creates an empty raw chunk
ChunkRaw ( int length, byte idbytes, bool alloc ) : System
ComputeCrc ( ) : int	Called after setting data, before writing to os
GetAsByteStream ( ) : MemoryStream
ReadChunkData ( Stream stream, bool checkCrc ) : int	Position before: just after chunk id. positon after: after crc Data should be already allocated. Checks CRC Return number of byte read.
WriteChunk ( Stream os ) : void

Method Details

ToString() public method

Just id and length

public ToString ( ) : String
return	String

setOffset() public method

public setOffset ( long offset ) : void
offset	long
return	void

Property Details

Data public_oe property

Raw data, crc not included

public byte[] Data
return	byte[]

Id public_oe property

public String Id
return	String

IdBytes public_oe property

Chunk Id, as array of 4 bytes

public byte[] IdBytes
return	byte[]

Len public_oe property

The length counts only the data field, not itself, the chunk type code, or the CRC. Zero is a valid length. Although encoders and decoders should treat the length as unsigned, its value must not exceed 2^31-1 bytes.

public int Len
return	int