jj2000.j2k.image.forwcomptransf

Class ForwCompTransfSpec

java.lang.Object

jj2000.j2k.ModuleSpec

jj2000.j2k.image.CompTransfSpec

jj2000.j2k.image.forwcomptransf.ForwCompTransfSpec

All Implemented Interfaces:

Cloneable, FilterTypes

public class ForwCompTransfSpec
extends CompTransfSpec
implements FilterTypes

This class extends CompTransfSpec class in order to hold encoder specific aspects of CompTransfSpec.

See Also:

CompTransfSpec

Field Summary

Fields

Modifier and Type	Field and Description
private String	defaultValue

Fields inherited from class jj2000.j2k.ModuleSpec

compDef, def, nComp, nTiles, SPEC_COMP_DEF, SPEC_DEF, SPEC_TILE_COMP, SPEC_TILE_DEF, SPEC_TYPE_COMP, SPEC_TYPE_TILE, SPEC_TYPE_TILE_COMP, specified, specType, specValType, tileCompVal, tileDef

Fields inherited from interface jj2000.j2k.wavelet.FilterTypes

CUSTOM, W5X3, W9X7

Constructor Summary

Constructors

Constructor and Description
ForwCompTransfSpec(int nt, int nc, byte type, AnWTFilterSpec wfs, J2KImageWriteParamJava wp, String values) Constructs a new 'ForwCompTransfSpec' for the specified number of components and tiles and the arguments of optName option.

Method Summary

Methods

Modifier and Type	Method and Description
private int	getFilterType(int t, AnWTFilterSpec wfs) Get the filter type common to all component of a given tile.

Methods inherited from class jj2000.j2k.image.CompTransfSpec

isCompTransfUsed

Methods inherited from class jj2000.j2k.ModuleSpec

clone, getCompDef, getCopy, getDefault, getSpec, getSpecValType, getTileCompVal, getTileDef, isCompSpecified, isTileCompSpecified, isTileSpecified, parseIdx, rotate90, setCompDef, setDefault, setTileCompVal, setTileDef

Methods inherited from class java.lang.Object

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

Field Detail

defaultValue

private String defaultValue

Constructor Detail

ForwCompTransfSpec

public ForwCompTransfSpec(int nt,
                  int nc,
                  byte type,
                  AnWTFilterSpec wfs,
                  J2KImageWriteParamJava wp,
                  String values)

Constructs a new 'ForwCompTransfSpec' for the specified number of components and tiles and the arguments of optName option. This constructor is called by the encoder. It also checks that the arguments belongs to the recognized arguments list.

This constructor chose the component transformation type depending on the wavelet filters : RCT with w5x3 filter and ICT with w9x7 filter. Note: All filters must use the same data type.

Parameters:

nt - The number of tiles

nc - The number of components

type - the type of the specification module i.e. tile specific, component specific or both.

wfs - The wavelet filter specifications

Method Detail

getFilterType

private int getFilterType(int t,
                AnWTFilterSpec wfs)

Get the filter type common to all component of a given tile. If the tile index is -1, it searches common filter type of default specifications.

Parameters:

t - The tile index

wfs - The analysis filters specifications

Returns:

The filter type common to all the components