Package jj2000.j2k.wavelet

Class WTFilterSpec

java.lang.Object

jj2000.j2k.wavelet.WTFilterSpec

public abstract class WTFilterSpec
extends Object

This is the generic class from which the ones that hold the analysis or synthesis filters to be used in each part of the image derive. See AnWTFilterSpec and SynWTFilterSpec.

The filters to use are defined by a hierarchy. The hierarchy is:

- Tile and component specific filters
- Tile specific default filters
- Component main default filters
- Main default filters

At the moment tiles are not supported by this class.

See Also:

AnWTFilterSpec, SynWTFilterSpec

Field Summary

Fields

Modifier and Type	Field	Description
static byte	FILTER_SPEC_COMP_DEF	The identifier for "component default" specified filters
static byte	FILTER_SPEC_MAIN_DEF	The identifier for "main default" specified filters
static byte	FILTER_SPEC_TILE_COMP	The identifier for "tile and component specific" specified filters
static byte	FILTER_SPEC_TILE_DEF	The identifier for "tile specific default" specified filters
protected byte[]	specValType	The spec type for each tile and component.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	WTFilterSpec(int nc)	Constructs a 'WTFilterSpec' object, initializing all the components and tiles to the 'FILTER_SPEC_MAIN_DEF' spec type, for the specified number of components and tiles.

Method Summary

Modifier and Type	Method	Description
byte	getKerSpecType(int n)	Returns the type of specification for the filters in the specified component and tile.
abstract int	getWTDataType()	Returns the data type used by the filters in this object, as defined in the 'DataBlk' interface.

Methods inherited from class java.lang.Object

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

Field Detail

FILTER_SPEC_MAIN_DEF

public static final byte FILTER_SPEC_MAIN_DEF

The identifier for "main default" specified filters

See Also:

Constant Field Values

FILTER_SPEC_COMP_DEF

public static final byte FILTER_SPEC_COMP_DEF

The identifier for "component default" specified filters

See Also:

Constant Field Values

FILTER_SPEC_TILE_DEF

public static final byte FILTER_SPEC_TILE_DEF

The identifier for "tile specific default" specified filters

See Also:

Constant Field Values

FILTER_SPEC_TILE_COMP

public static final byte FILTER_SPEC_TILE_COMP

The identifier for "tile and component specific" specified filters

See Also:

Constant Field Values

specValType

protected byte[] specValType

The spec type for each tile and component. The first index is the component index, the second is the tile index. NOTE: The tile specific things are not supported yet.

Constructor Detail

WTFilterSpec

protected WTFilterSpec(int nc)

Constructs a 'WTFilterSpec' object, initializing all the components and tiles to the 'FILTER_SPEC_MAIN_DEF' spec type, for the specified number of components and tiles.

NOTE: The tile specific things are not supported yet

Parameters:

nc - The number of components

nt - The number of tiles

Method Detail

getWTDataType

public abstract int getWTDataType()

Returns the data type used by the filters in this object, as defined in the 'DataBlk' interface.

Returns:

The data type of the filters in this object

See Also:

DataBlk

getKerSpecType

public byte getKerSpecType(int n)

Returns the type of specification for the filters in the specified component and tile. The specification type is one of: 'FILTER_SPEC_MAIN_DEF', 'FILTER_SPEC_COMP_DEF', 'FILTER_SPEC_TILE_DEF', 'FILTER_SPEC_TILE_COMP'.

NOTE: The tile specific things are not supported yet

Parameters:

n - The component index

t - The tile index, in raster scan order.

Returns:

The specification type for component 'n' and tile 't'.