com.sun.media.imageioimpl.plugins.tiff

Class TIFFFaxCompressor

java.lang.Object

com.sun.media.imageio.plugins.tiff.TIFFCompressor

com.sun.media.imageioimpl.plugins.tiff.TIFFFaxCompressor

Direct Known Subclasses:

TIFFRLECompressor, TIFFT4Compressor, TIFFT6Compressor

public abstract class TIFFFaxCompressor
extends TIFFCompressor

Field Summary

Fields

Modifier and Type	Field and Description
int	bits Output bit buffer.
static int	BLACK The CCITT numerical definition of black.
static byte[]	byteTable
static int[][]	horz Black and white horizontal mode table.
static int[]	horzMode Horizontal mode table.
boolean	inverseFill Whether bits are inserted in reverse order (TIFF FillOrder 2).
static int[][]	makeupCodes Black and white make-up code table.
static int[]	makeupCodesBlack Make-up codes for black runs.
static int[]	makeupCodesWhite Make-up codes for white runs.
int	ndex Number of bits in the output bit buffer.
static int[][]	pass Black and white pass mode table.
static int[]	passMode Pass mode table.
static int[][]	termCodes Black and white terminating code table.
static int[]	termCodesBlack Terminating codes for black runs.
static int[]	termCodesWhite Terminating codes for white runs.
static int[][]	vert Black and white vertical mode table.
static int[]	vertMode Vertical mode table.
static int	WHITE The CCITT numerical definition of white.

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

compressionTagValue, compressionType, isCompressionLossless, metadata, stream, writer

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TIFFFaxCompressor(String compressionType, int compressionTagValue, boolean isCompressionLossless) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
int	add1DBits(byte[] buf, int where, int count, int color) Get code for run and add to compressed bitstream.
int	add2DBits(byte[] buf, int where, int[][] mode, int entry) Place entry from mode table into compressed bitstream.
int	addEOFB(byte[] buf, int where) Add an End-of-Facsimile-Block (EOFB == 0x001001) to the compressed bitstream.
int	addEOL(boolean is1DMode, boolean addFill, boolean add1, byte[] buf, int where) Add an End-of-Line (EOL == 0x001) to the compressed bitstream with optional byte alignment.
int	encode1D(byte[] data, int rowOffset, int colOffset, int rowLength, byte[] compData, int compOffset) One-dimensionally encode a row of data using CCITT Huffman compression.
void	initBitBuf() Initialize bit buffer machinery.
int	nextState(byte[] data, int base, int bitOffset, int maxOffset) Return min of maxOffset or offset of first pixel different from pixel at bitOffset.
void	setMetadata(IIOMetadata metadata) Sets the value of the metadata field.

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

encode, getCompressionTagValue, getCompressionType, getMetadata, getStream, getWriter, isCompressionLossless, setStream, setWriter

Methods inherited from class java.lang.Object

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

Field Detail

WHITE

public static final int WHITE

The CCITT numerical definition of white.

See Also:

Constant Field Values

BLACK

public static final int BLACK

The CCITT numerical definition of black.

See Also:

Constant Field Values

byteTable

public static byte[] byteTable

termCodesBlack

public static int[] termCodesBlack

Terminating codes for black runs.

termCodesWhite

public static int[] termCodesWhite

Terminating codes for white runs.

makeupCodesBlack

public static int[] makeupCodesBlack

Make-up codes for black runs.

makeupCodesWhite

public static int[] makeupCodesWhite

Make-up codes for white runs.

passMode

public static int[] passMode

Pass mode table.

vertMode

public static int[] vertMode

Vertical mode table.

horzMode

public static int[] horzMode

Horizontal mode table.

termCodes

public static int[][] termCodes

Black and white terminating code table.

makeupCodes

public static int[][] makeupCodes

Black and white make-up code table.

pass

public static int[][] pass

Black and white pass mode table.

vert

public static int[][] vert

Black and white vertical mode table.

horz

public static int[][] horz

Black and white horizontal mode table.

inverseFill

public boolean inverseFill

Whether bits are inserted in reverse order (TIFF FillOrder 2).

bits

public int bits

Output bit buffer.

ndex

public int ndex

Number of bits in the output bit buffer.

Constructor Detail

TIFFFaxCompressor

protected TIFFFaxCompressor(String compressionType,
                 int compressionTagValue,
                 boolean isCompressionLossless)

Constructor. The superclass constructor is merely invoked with the same parameters.

Method Detail

setMetadata

public void setMetadata(IIOMetadata metadata)

Sets the value of the metadata field.

The implementation in this class also sets local options from the FILL_ORDER field if it exists.

Overrides:

setMetadata in class TIFFCompressor

Parameters:

metadata - the IIOMetadata object for the image being written.

See Also:

TIFFCompressor.getMetadata()

nextState

public int nextState(byte[] data,
            int base,
            int bitOffset,
            int maxOffset)

Return min of maxOffset or offset of first pixel different from pixel at bitOffset.

initBitBuf

public void initBitBuf()

Initialize bit buffer machinery.

add1DBits

public int add1DBits(byte[] buf,
            int where,
            int count,
            int color)

Get code for run and add to compressed bitstream.

add2DBits

public int add2DBits(byte[] buf,
            int where,
            int[][] mode,
            int entry)

Place entry from mode table into compressed bitstream.

addEOL

public int addEOL(boolean is1DMode,
         boolean addFill,
         boolean add1,
         byte[] buf,
         int where)

Add an End-of-Line (EOL == 0x001) to the compressed bitstream with optional byte alignment.

addEOFB

public int addEOFB(byte[] buf,
          int where)

Add an End-of-Facsimile-Block (EOFB == 0x001001) to the compressed bitstream.

encode1D

public int encode1D(byte[] data,
           int rowOffset,
           int colOffset,
           int rowLength,
           byte[] compData,
           int compOffset)

One-dimensionally encode a row of data using CCITT Huffman compression. The bit buffer should be initialized as required before invoking this method and should be flushed after the method returns. The fill order is always highest-order to lowest-order bit so the calling routine should handle bit inversion.