Class XTIFFLZWTileCodec

java.lang.Object

org.libtiff.jai.codec.XTIFFTileCodecImpl

org.libtiff.jai.codecimpl.XTIFFLZWTileCodec

All Implemented Interfaces:

XTIFFTileCodec

public class XTIFFLZWTileCodec
extends XTIFFTileCodecImpl

This codec encapsulates all the logic for the TIFF "lzw" decoding codec algorithm.

Field Summary

Fields inherited from class XTIFFTileCodecImpl

_bdata, _sdata, bitsPerSample, bpixvals, buffer, colormap, compression, dataType, decodePaletteAsShorts, decodeParam, directory, encodeParam, image, image_type, isTiled, length, minX, minY, numBands, sampleModel, sampleSize, spixvals, tileLength, tileWidth, unitsInThisTile, width

Constructor Summary

Constructors

Constructor	Description
XTIFFLZWTileCodec()	Public constructor

Method Summary

Modifier and Type	Method	Description
XTIFFTileCodec	create()	Creation method
void	decodeTilePixels(byte[] input, Rectangle newRect, byte[] bdata)	Decode a rectangle of pixels
void	decodeTilePixels(byte[] input, Rectangle newRect, short[] sdata)	Decode a rectangle of pixels
void	initializeDecoding()	The initialization method particular to LZW decoding.
void	register()	Registration method

Methods inherited from class XTIFFTileCodecImpl

canEncode, create, create, decode, decodeColor, decodeColor, decodeColor, decodeColor, decodeTilePixels, encode, encodeTilePixels, getCompressedTileSize, getCompression, getLongField, getTilePixels, initialize, initialize, initialize, initializeEncoding, register, setTilePixels, setupBufferForDecoding, setupBufferForEncoding, setupSourceImage, unpackShorts

Methods inherited from class Object

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

Constructor Details

XTIFFLZWTileCodec

public XTIFFLZWTileCodec()

Public constructor

Method Details

create

public XTIFFTileCodec create()

Creation method

Specified by:

create in class XTIFFTileCodecImpl

register

public void register()

Registration method

Specified by:

register in interface XTIFFTileCodec

Specified by:

register in class XTIFFTileCodecImpl

See Also:

• XTIFFDirectory

initializeDecoding

public void initializeDecoding()

The initialization method particular to LZW decoding.

Overrides:

initializeDecoding in class XTIFFTileCodecImpl

decodeTilePixels

public void decodeTilePixels(byte[] input,
 Rectangle newRect,
 byte[] bdata)

Decode a rectangle of pixels

Specified by:

decodeTilePixels in class XTIFFTileCodecImpl

Parameters:

input - the byte array of compressed input data

newRect - the rectangular shape of the target pixels

bdata - the target decompressed pixels.

decodeTilePixels

public void decodeTilePixels(byte[] input,
 Rectangle newRect,
 short[] sdata)

Decode a rectangle of pixels

Specified by:

decodeTilePixels in class XTIFFTileCodecImpl

Parameters:

input - the byte array of compressed input data

newRect - the rectangular shape of the target pixels

sdata - the target decompressed pixels.