C# Class FluxJpeg.Core.DCT

Implements the Discrete Cosine Transform with dynamic CIL

Show file Open project: prepare/HTML-Renderer Class Usage Examples

Public Properties

Property	Type	Description
DivisorsChrominance	double[]
DivisorsLuminance	double[]
divisors	double[][]
quantum	int[][]

Public Methods

Method	Description
DCT ( int quality ) : System
SetValueClipped ( byte arr, int i, int j, float val ) : void

Private Methods

Method	Description
DCT ( ) : System
EmitIDCT ( ) : IDCTFunc	Generates a pure-IL nonbranching stream of instructions that perform the inverse DCT. Relies on helper function SetValueClipped.
FastFDCT ( float input ) : ].float[
FastIDCT ( float input ) : ].byte[
Initialize ( int quality ) : void
QuantizeBlock ( float inputData, int code ) : int[]
buildC ( ) : ].float[	Precomputes cosine terms in A.3.3 of http://www.w3.org/Graphics/JPEG/itu-t81.pdf Closely follows the term precomputation in the Java Advanced Imaging library.
buildCT ( ) : ].float[

Method Details

DCT() public method

public DCT ( int quality ) : System
quality	int
return	System

SetValueClipped() public static method

public static SetValueClipped ( byte arr, int i, int j, float val ) : void
arr	byte
i	int
j	int
val	float
return	void

Property Details

DivisorsChrominance public property

public double[] DivisorsChrominance
return	double[]

DivisorsLuminance public property

public double[] DivisorsLuminance
return	double[]

divisors public property

public double[][] divisors
return	double[][]

quantum public property

public int[][] quantum
return	int[][]