com.lowagie.text.pdf.codec

Class JBIG2SegmentReader

public class JBIG2SegmentReader extends Object

Class to read a JBIG2 file at a basic level: understand all the segments, understand what segments belong to which pages, how many pages there are, what the width and height of each page is, and global segments if there are any. Or: the minimum required to be able to take a normal sequential or random-access organized file, and be able to embed JBIG2 pages as images in a PDF. TODO: the indeterminate-segment-size value of dataLength, else?

Since: 2.1.5

Nested Class Summary
static class	JBIG2SegmentReader.JBIG2Page Inner class that holds information about a JBIG2 page.
static class	JBIG2SegmentReader.JBIG2Segment Inner class that holds information about a JBIG2 segment.

Field Summary
static int	END_OF_FILE
static int	END_OF_PAGE
static int	END_OF_STRIPE
static int	EXTENSION
SortedSet	globals
static int	IMMEDIATE_GENERIC_REFINEMENT_REGION
static int	IMMEDIATE_GENERIC_REGION
static int	IMMEDIATE_HALFTONE_REGION
static int	IMMEDIATE_LOSSLESS_GENERIC_REFINEMENT_REGION
static int	IMMEDIATE_LOSSLESS_GENERIC_REGION
static int	IMMEDIATE_LOSSLESS_HALFTONE_REGION
static int	IMMEDIATE_LOSSLESS_TEXT_REGION
static int	IMMEDIATE_TEXT_REGION
static int	INTERMEDIATE_GENERIC_REFINEMENT_REGION
static int	INTERMEDIATE_GENERIC_REGION
static int	INTERMEDIATE_HALFTONE_REGION
static int	INTERMEDIATE_TEXT_REGION
int	number_of_pages
boolean	number_of_pages_known
SortedMap	pages
static int	PAGE_INFORMATION
static int	PATTERN_DICTIONARY
static int	PROFILES
RandomAccessFileOrArray	ra
boolean	read
SortedMap	segments
boolean	sequential
static int	SYMBOL_DICTIONARY
static int	TABLES

Constructor Summary
	JBIG2SegmentReader(RandomAccessFileOrArray ra)

Method Summary
static byte[]	copyByteArray(byte[] b)
byte[]	getGlobal(boolean for_embedding)
JBIG2SegmentReader.JBIG2Page	getPage(int page)
int	getPageHeight(int i)
int	getPageWidth(int i)
int	numberOfPages()
void	read()
void	readFileHeader()
JBIG2SegmentReader.JBIG2Segment	readHeader()
void	readSegment(JBIG2SegmentReader.JBIG2Segment s)
String	toString()

Field Detail

END_OF_FILE

public static final int END_OF_FILE

END_OF_PAGE

public static final int END_OF_PAGE

END_OF_STRIPE

public static final int END_OF_STRIPE

EXTENSION

public static final int EXTENSION

globals

private final SortedSet globals

IMMEDIATE_GENERIC_REFINEMENT_REGION

public static final int IMMEDIATE_GENERIC_REFINEMENT_REGION

IMMEDIATE_GENERIC_REGION

public static final int IMMEDIATE_GENERIC_REGION

IMMEDIATE_HALFTONE_REGION

public static final int IMMEDIATE_HALFTONE_REGION

IMMEDIATE_LOSSLESS_GENERIC_REFINEMENT_REGION

public static final int IMMEDIATE_LOSSLESS_GENERIC_REFINEMENT_REGION

IMMEDIATE_LOSSLESS_GENERIC_REGION

public static final int IMMEDIATE_LOSSLESS_GENERIC_REGION

IMMEDIATE_LOSSLESS_HALFTONE_REGION

public static final int IMMEDIATE_LOSSLESS_HALFTONE_REGION

IMMEDIATE_LOSSLESS_TEXT_REGION

public static final int IMMEDIATE_LOSSLESS_TEXT_REGION

IMMEDIATE_TEXT_REGION

public static final int IMMEDIATE_TEXT_REGION

INTERMEDIATE_GENERIC_REFINEMENT_REGION

public static final int INTERMEDIATE_GENERIC_REFINEMENT_REGION

INTERMEDIATE_GENERIC_REGION

public static final int INTERMEDIATE_GENERIC_REGION

INTERMEDIATE_HALFTONE_REGION

public static final int INTERMEDIATE_HALFTONE_REGION

INTERMEDIATE_TEXT_REGION

public static final int INTERMEDIATE_TEXT_REGION

number_of_pages

private int number_of_pages

number_of_pages_known

private boolean number_of_pages_known

pages

private final SortedMap pages

PAGE_INFORMATION

public static final int PAGE_INFORMATION

PATTERN_DICTIONARY

public static final int PATTERN_DICTIONARY

PROFILES

public static final int PROFILES

ra

private RandomAccessFileOrArray ra

read

private boolean read

segments

private final SortedMap segments

sequential

private boolean sequential

SYMBOL_DICTIONARY

public static final int SYMBOL_DICTIONARY

TABLES

public static final int TABLES

Constructor Detail

JBIG2SegmentReader

public JBIG2SegmentReader(RandomAccessFileOrArray ra)

Method Detail

copyByteArray

public static byte[] copyByteArray(byte[] b)

getGlobal

public byte[] getGlobal(boolean for_embedding)

getPage

public JBIG2SegmentReader.JBIG2Page getPage(int page)

getPageHeight

public int getPageHeight(int i)

getPageWidth

public int getPageWidth(int i)

numberOfPages

public int numberOfPages()

read

public void read()

readFileHeader

void readFileHeader()

readHeader

JBIG2SegmentReader.JBIG2Segment readHeader()

readSegment

void readSegment(JBIG2SegmentReader.JBIG2Segment s)

toString

public String toString()