com.sun.media.imageioimpl.plugins.tiff

Class TIFFLZWDecompressor

java.lang.Object

com.sun.media.imageio.plugins.tiff.TIFFDecompressor

com.sun.media.imageioimpl.plugins.tiff.TIFFLZWDecompressor

public class TIFFLZWDecompressor
extends TIFFDecompressor

Field Summary

Fields

Modifier and Type	Field and Description
private static int[]	andTable
(package private) int	bitsToGet
private static boolean	DEBUG
(package private) byte[]	dstData
(package private) int	dstIndex
(package private) int	nextBits
(package private) int	nextData
(package private) int	predictor
(package private) byte[]	srcData
(package private) int	srcIndex
(package private) byte[][]	stringTable
(package private) int	tableIndex

Fields inherited from class com.sun.media.imageio.plugins.tiff.TIFFDecompressor

activeSrcHeight, activeSrcMinX, activeSrcMinY, activeSrcWidth, bitsPerSample, byteCount, colorConverter, colorMap, compression, destinationBands, dstHeight, dstMinX, dstMinY, dstWidth, dstXOffset, dstYOffset, extraSamples, image, metadata, offset, photometricInterpretation, planar, rawImage, reader, sampleFormat, samplesPerPixel, sourceBands, sourceXOffset, sourceYOffset, srcHeight, srcMinX, srcMinY, srcWidth, stream, subsampleX, subsampleY

Constructor Summary

Constructors

Constructor and Description
TIFFLZWDecompressor(int predictor)

Method Summary

Modifier and Type	Method and Description
void	addStringToTable(byte[] string) Add a new string to the string table.
void	addStringToTable(byte[] oldString, byte newString) Add a new string to the string table.
byte[]	composeString(byte[] oldString, byte newString) Append newString to the end of oldString.
int	decode(byte[] sdata, int srcOffset, byte[] ddata, int dstOffset)
void	decodeRaw(byte[] b, int dstOffset, int bitsPerPixel, int scanlineStride) Decodes the source data into the provided byte array b, starting at the offset given by dstOffset.
int	getNextCode()
void	initializeStringTable() Initialize the string table.
void	writeString(byte[] string) Write out the string just uncompressed.

Methods inherited from class com.sun.media.imageio.plugins.tiff.TIFFDecompressor

beginDecoding, createRawImage, decode, decodeRaw, decodeRaw, decodeRaw, getRawImageType, getRawImageTypeSpecifier, setActiveSrcHeight, setActiveSrcMinX, setActiveSrcMinY, setActiveSrcWidth, setBitsPerSample, setByteCount, setColorConverter, setColorMap, setCompression, setDestinationBands, setDstHeight, setDstMinX, setDstMinY, setDstWidth, setDstXOffset, setDstYOffset, setExtraSamples, setImage, setMetadata, setOffset, setPhotometricInterpretation, setPlanar, setReader, setSampleFormat, setSamplesPerPixel, setSourceBands, setSourceXOffset, setSourceYOffset, setSrcHeight, setSrcMinX, setSrcMinY, setSrcWidth, setStream, setSubsampleX, setSubsampleY

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

private static final boolean DEBUG

See Also:

Constant Field Values

andTable

private static final int[] andTable

predictor

int predictor

srcData

byte[] srcData

dstData

byte[] dstData

srcIndex

int srcIndex

dstIndex

int dstIndex

stringTable

byte[][] stringTable

tableIndex

int tableIndex

bitsToGet

int bitsToGet

nextData

int nextData

nextBits

int nextBits

Constructor Detail

TIFFLZWDecompressor

public TIFFLZWDecompressor(int predictor)
                    throws IIOException

Throws:

IIOException

Method Detail

decodeRaw

public void decodeRaw(byte[] b,
                      int dstOffset,
                      int bitsPerPixel,
                      int scanlineStride)
               throws IOException

Description copied from class: TIFFDecompressor

Decodes the source data into the provided byte array b, starting at the offset given by dstOffset. Each pixel occupies bitsPerPixel bits, with no padding between pixels. Scanlines are separated by scanlineStride bytes.

Specified by:

decodeRaw in class TIFFDecompressor

Parameters:

b - a byte array to be written.

dstOffset - the starting offset in b to be written.

bitsPerPixel - the number of bits for each pixel.

scanlineStride - the number of bytes to advance between that starting pixels of each scanline.

Throws:

IOException - if an error occurs reading from the source ImageInputStream.

decode

public int decode(byte[] sdata,
                  int srcOffset,
                  byte[] ddata,
                  int dstOffset)
           throws IOException

Throws:

IOException

initializeStringTable

public void initializeStringTable()

Initialize the string table.

writeString

public void writeString(byte[] string)

Write out the string just uncompressed.

addStringToTable

public void addStringToTable(byte[] oldString,
                             byte newString)

Add a new string to the string table.

addStringToTable

public void addStringToTable(byte[] string)

Add a new string to the string table.

composeString

public byte[] composeString(byte[] oldString,
                            byte newString)

Append newString to the end of oldString.

getNextCode

public int getNextCode()