Package com.sun.pdfview.decode

Class CCITTFaxDecoder

java.lang.Object

com.sun.pdfview.decode.CCITTFaxDecoder

public class CCITTFaxDecoder
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static short[]	additionalMakeup
private boolean	align
private int	bitPointer
(package private) static short[]	black
private int	bytePointer
private int	changingElemSize
private int[]	currChangingElems
private byte[]	data
private boolean	fillBits
private int	fillOrder
(package private) static byte[]	flipTable
(package private) static short[]	initBlack
private int	lastChangingElement
private int[]	prevChangingElems
(package private) static int[]	table1
(package private) static int[]	table2
(package private) static short[]	twoBitBlack
(package private) static byte[]	twoDCodes
private int	w
(package private) static short[]	white

Constructor Summary

Constructors

Constructor	Description
CCITTFaxDecoder(int fillOrder, int w, int h)

Method Summary

Modifier and Type	Method	Description
private boolean	align()
protected boolean	consumeEOL()
private int	decodeBlackCodeWord()
protected void	decodeNextScanline(byte[] buffer, int lineOffset, int bitOffset)
void	decodeT41D(byte[] buffer, byte[] compData, int startX, int height)
void	decodeT42D(byte[] buffer, byte[] compData, int startX, int height)
void	decodeT6(byte[] buffer, byte[] compData, int startX, int height)
private int	decodeWhiteCodeWord()
private void	getNextChangingElement(int a0, boolean isWhite, int[] ret)
boolean	isAlign()
boolean	isFillBits()
private int	nextLesserThan8Bits(int bitsToGet)
private int	nextNBits(int bitsToGet)
private int	readEOL(boolean isFirstEOL)
private boolean	seekEOL()
void	setAlign(boolean align)
void	setFillBits(boolean fillBits)
private void	setToBlack(byte[] buffer, int lineOffset, int bitOffset, int numBits)
private void	updatePointer(int bitsToMoveBack)

Methods inherited from class java.lang.Object

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

Field Detail

table1

static int[] table1

table2

static int[] table2

flipTable

static byte[] flipTable

white

static short[] white

additionalMakeup

static short[] additionalMakeup

initBlack

static short[] initBlack

twoBitBlack

static short[] twoBitBlack

black

static short[] black

twoDCodes

static byte[] twoDCodes

bitPointer

private int bitPointer

bytePointer

private int bytePointer

data

private byte[] data

w

private int w

align

private boolean align

fillOrder

private int fillOrder

changingElemSize

private int changingElemSize

prevChangingElems

private int[] prevChangingElems

currChangingElems

private int[] currChangingElems

lastChangingElement

private int lastChangingElement

fillBits

private boolean fillBits

Constructor Detail

CCITTFaxDecoder

public CCITTFaxDecoder(int fillOrder,
                       int w,
                       int h)

Parameters:

fillOrder - The fill order of the compressed data bytes.

w -

h -

Method Detail

align

private boolean align()

consumeEOL

protected boolean consumeEOL()

decodeBlackCodeWord

private int decodeBlackCodeWord()

decodeNextScanline

protected void decodeNextScanline(byte[] buffer,
                                  int lineOffset,
                                  int bitOffset)

decodeT41D

public void decodeT41D(byte[] buffer,
                       byte[] compData,
                       int startX,
                       int height)

decodeT42D

public void decodeT42D(byte[] buffer,
                       byte[] compData,
                       int startX,
                       int height)

decodeT6

public void decodeT6(byte[] buffer,
                     byte[] compData,
                     int startX,
                     int height)

decodeWhiteCodeWord

private int decodeWhiteCodeWord()

getNextChangingElement

private void getNextChangingElement(int a0,
                                    boolean isWhite,
                                    int[] ret)

isAlign

public boolean isAlign()

isFillBits

public boolean isFillBits()

nextLesserThan8Bits

private int nextLesserThan8Bits(int bitsToGet)

nextNBits

private int nextNBits(int bitsToGet)

readEOL

private int readEOL(boolean isFirstEOL)

seekEOL

private boolean seekEOL()

setAlign

public void setAlign(boolean align)

setFillBits

public void setFillBits(boolean fillBits)

setToBlack

private void setToBlack(byte[] buffer,
                        int lineOffset,
                        int bitOffset,
                        int numBits)

updatePointer

private void updatePointer(int bitsToMoveBack)