Class CompressorHuffmanTree

Represents the Huffman Tree.

Inheritance
System.Object
CompressorHuffmanTree
Namespace: Syncfusion.Compression
Assembly: Syncfusion.DocIO.UWP.dll
Syntax
public class CompressorHuffmanTree : Object

Constructors

CompressorHuffmanTree(CompressedStreamWriter, Int32, Int32, Int32)

Create a new Huffman tree

Declaration
public CompressorHuffmanTree(CompressedStreamWriter writer, int iElementsCount, int iMinimumCodes, int iMaximumLength)
Parameters
Type Name Description
CompressedStreamWriter writer
System.Int32 iElementsCount
System.Int32 iMinimumCodes
System.Int32 iMaximumLength

Properties

CodeFrequences

Code frequences.

Declaration
public short[] CodeFrequences { get; }
Property Value
Type Description
System.Int16[]

CodeLengths

Lengths of codes in tree.

Declaration
public byte[] CodeLengths { get; }
Property Value
Type Description
System.Byte[]

TreeLength

Length of the tree.

Declaration
public int TreeLength { get; }
Property Value
Type Description
System.Int32

Methods

BuildCodes()

Calculates codes from their frequences.

Declaration
public void BuildCodes()

BuildTree()

Builds tree.

Declaration
public void BuildTree()

CalcBLFreq(CompressorHuffmanTree)

Calculates code frequences.

Declaration
public void CalcBLFreq(CompressorHuffmanTree blTree)
Parameters
Type Name Description
CompressorHuffmanTree blTree

Tree.

CheckEmpty()

Checks wheather tree is empty. If tree is not empty, then exception will be raised.

Declaration
public void CheckEmpty()

GetEncodedLength()

Calculates length of the compressed data.

Declaration
public int GetEncodedLength()
Returns
Type Description
System.Int32

Count of bits, the data will occupy.

Reset()

Resets all code data in tree.

Declaration
public void Reset()

SetStaticCodes(Int16[], Byte[])

Specifies new arrays of codes and their lengths.

Declaration
public void SetStaticCodes(short[] codes, byte[] lengths)
Parameters
Type Name Description
System.Int16[] codes

Array of codes.
System.Byte[] lengths

Array of code lengths.

WriteCodeToStream(Int32)

Writes code to the compressor output stream.

Declaration
public void WriteCodeToStream(int code)
Parameters
Type Name Description
System.Int32 code

Code to be written.

WriteTree(CompressorHuffmanTree)

Writes tree to output stream.

Declaration
public void WriteTree(CompressorHuffmanTree blTree)
Parameters
Type Name Description
CompressorHuffmanTree blTree

Tree to be written.

Extension Methods