org.jcodec.common.dct

Class SparseIDCT

java.lang.Object

org.jcodec.common.dct.SparseIDCT

public class SparseIDCT
extends Object

This class is part of JCodec ( www.jcodec.org ) This software is distributed under FreeBSD License Performs IDCT of 8x8 block. See MPEGDecoder for example.

Author:

The JCodec project

Field Summary

Fields

Modifier and Type	Field and Description
static int[][]	COEFF
static int	DC_SHIFT
static int	PRECISION

Constructor Summary

Constructors

Constructor and Description
SparseIDCT()

Method Summary

Modifier and Type	Method and Description
static void	coeff(int[] block, int ind, int level) Recalculates image based on new DCT coefficient
static void	finish(int[] block) Finalizes DCT calculation
static void	start(int[] block, int dc) Starts DCT reconstruction Faster then call to 'coeff' with ind = 0

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

COEFF

public static final int[][] COEFF

PRECISION

public static final int PRECISION

See Also:

Constant Field Values

DC_SHIFT

public static final int DC_SHIFT

See Also:

Constant Field Values

Constructor Detail

SparseIDCT

public SparseIDCT()

Method Detail

start

public static final void start(int[] block,
                               int dc)

Starts DCT reconstruction Faster then call to 'coeff' with ind = 0

Parameters:

block -

dc -

coeff

public static final void coeff(int[] block,
                               int ind,
                               int level)

Recalculates image based on new DCT coefficient

Parameters:

block -

ind -

level -

finish

public static final void finish(int[] block)

Finalizes DCT calculation

Parameters:

block -