Package org.apache.pdfbox.filter

Class CCITTFaxEncoderStream

java.lang.Object

java.io.OutputStream

org.apache.pdfbox.filter.CCITTFaxEncoderStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

final class CCITTFaxEncoderStream
extends OutputStream

CCITT Modified Group 4 (T6) fax compression.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	CCITTFaxEncoderStream.Code

Field Summary

Fields

Modifier and Type	Field	Description
private static final CCITTFaxEncoderStream.Code[]	BLACK_NONTERMINATING_CODES
private static final CCITTFaxEncoderStream.Code[]	BLACK_TERMINATING_CODES
private int[]	changesCurrentRow
private int	changesCurrentRowLength
private int[]	changesReferenceRow
private int	changesReferenceRowLength
private final int	columns
private int	currentBufferLength
private int	currentRow
private final int	fillOrder
private final byte[]	inputBuffer
private final int	inputBufferLength
private byte	outputBuffer
private byte	outputBufferBitLength
private final int	rows
private final OutputStream	stream
private static final CCITTFaxEncoderStream.Code[]	WHITE_NONTERMINATING_CODES
private static final CCITTFaxEncoderStream.Code[]	WHITE_TERMINATING_CODES

Constructor Summary

Constructors

Constructor	Description
CCITTFaxEncoderStream(OutputStream stream, int columns, int rows, int fillOrder)

Method Summary

Modifier and Type	Method	Description
private void	clearOutputBuffer()
void	close()
private void	encode2D()
private void	encodeRow()
private void	encodeRowType6()
private void	fill()
void	flush()
private int[]	getNextChanges(int pos, boolean white)
private int[]	getNextRefChanges(int a0, boolean white)
void	write(int b)
private void	write(int code, int codeLength)
private void	writeEOL()
private void	writeRun(int runLength, boolean white)

Methods inherited from class java.io.OutputStream

nullOutputStream, write, write

Methods inherited from class java.lang.Object

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

Field Details

currentBufferLength

private int currentBufferLength

inputBuffer

private final byte[] inputBuffer

inputBufferLength

private final int inputBufferLength

columns

private final int columns

rows

private final int rows

changesCurrentRow

private int[] changesCurrentRow

changesReferenceRow

private int[] changesReferenceRow

currentRow

private int currentRow

changesCurrentRowLength

private int changesCurrentRowLength

changesReferenceRowLength

private int changesReferenceRowLength

outputBuffer

private byte outputBuffer

outputBufferBitLength

private byte outputBufferBitLength

fillOrder

private final int fillOrder

stream

private final OutputStream stream

WHITE_TERMINATING_CODES

private static final CCITTFaxEncoderStream.Code[] WHITE_TERMINATING_CODES

WHITE_NONTERMINATING_CODES

private static final CCITTFaxEncoderStream.Code[] WHITE_NONTERMINATING_CODES

BLACK_TERMINATING_CODES

private static final CCITTFaxEncoderStream.Code[] BLACK_TERMINATING_CODES

BLACK_NONTERMINATING_CODES

private static final CCITTFaxEncoderStream.Code[] BLACK_NONTERMINATING_CODES

Constructor Details

CCITTFaxEncoderStream

CCITTFaxEncoderStream(OutputStream stream,
 int columns,
 int rows,
 int fillOrder)

Method Details

write

public void write(int b)
           throws IOException

Specified by:

write in class OutputStream

Throws:

IOException

flush

public void flush()
           throws IOException

Specified by:

flush in interface Flushable

Overrides:

flush in class OutputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class OutputStream

Throws:

IOException

encodeRow

private void encodeRow()
                throws IOException

Throws:

IOException

encodeRowType6

private void encodeRowType6()
                     throws IOException

Throws:

IOException

getNextChanges

private int[] getNextChanges(int pos,
 boolean white)

writeRun

private void writeRun(int runLength,
 boolean white)
               throws IOException

Throws:

IOException

encode2D

private void encode2D()
               throws IOException

Throws:

IOException

getNextRefChanges

private int[] getNextRefChanges(int a0,
 boolean white)

write

private void write(int code,
 int codeLength)
            throws IOException

Throws:

IOException

writeEOL

private void writeEOL()
               throws IOException

Throws:

IOException

fill

private void fill()
           throws IOException

Throws:

IOException

clearOutputBuffer

private void clearOutputBuffer()