com.lowagie.text.pdf.codec
Class TIFFFaxDecoder

java.lang.Object
  com.lowagie.text.pdf.codec.TIFFFaxDecoder

public class TIFFFaxDecoder
extends Object

Field Summary

(package private) static short[]	additionalMakeup
private int	bitPointer
(package private) static short[]	black
private int	bytePointer
private int	changingElemSize
private int	compression
private int[]	currChangingElems
private byte[]	data
private int	fillBits
private int	fillOrder
(package private) static byte[]	flipTable
private int	h
(package private) static short[]	initBlack
private int	lastChangingElement
private int	oneD
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	uncompressedMode
private int	w
(package private) static short[]	white

Constructor Summary

TIFFFaxDecoder(int fillOrder, int w, int h)

Method Summary

private boolean	advancePointer()
void	decode1D(byte[] buffer, byte[] compData, int startX, int height)
void	decode2D(byte[] buffer, byte[] compData, int startX, int height, long tiffT4Options)
private int	decodeBlackCodeWord()
void	decodeNextScanline(byte[] buffer, int lineOffset, int bitOffset)
void	decodeT6(byte[] buffer, byte[] compData, int startX, int height, long tiffT6Options)
private int	decodeWhiteCodeWord()
private void	getNextChangingElement(int a0, boolean isWhite, int[] ret)
private int	nextLesserThan8Bits(int bitsToGet)
private int	nextNBits(int bitsToGet)
private int	readEOL(boolean isFirstEOL)
static void	reverseBits(byte[] b) Reverses the bits in the array
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

bitPointer

private int bitPointer

bytePointer

private int bytePointer

data

private byte[] data

w

private int w

h

private int h

fillOrder

private int fillOrder

changingElemSize

private int changingElemSize

prevChangingElems

private int[] prevChangingElems

currChangingElems

private int[] currChangingElems

lastChangingElement

private int lastChangingElement

compression

private int compression

uncompressedMode

private int uncompressedMode

fillBits

private int fillBits

oneD

private int oneD

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

Constructor Detail

TIFFFaxDecoder

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

Parameters:

fillOrder - The fill order of the compressed data bytes.

w -

h -

Method Detail

reverseBits

public static void reverseBits(byte[] b)

Reverses the bits in the array

Parameters:

b - the bits to reverse

Since:

2.0.7

decode1D

public void decode1D(byte[] buffer,
                     byte[] compData,
                     int startX,
                     int height)

decodeNextScanline

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

decode2D

public void decode2D(byte[] buffer,
                     byte[] compData,
                     int startX,
                     int height,
                     long tiffT4Options)

decodeT6

public void decodeT6(byte[] buffer,
                     byte[] compData,
                     int startX,
                     int height,
                     long tiffT6Options)

setToBlack

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

decodeWhiteCodeWord

private int decodeWhiteCodeWord()

decodeBlackCodeWord

private int decodeBlackCodeWord()

readEOL

private int readEOL(boolean isFirstEOL)

getNextChangingElement

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

nextNBits

private int nextNBits(int bitsToGet)

nextLesserThan8Bits

private int nextLesserThan8Bits(int bitsToGet)

updatePointer

private void updatePointer(int bitsToMoveBack)

advancePointer

private boolean advancePointer()