Package org.apache.pdfbox.filter

Class CCITTFaxEncoderStream

java.lang.Object

java.io.OutputStream

org.apache.pdfbox.filter.CCITTFaxEncoderStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

final class CCITTFaxEncoderStream
extends java.io.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 CCITTFaxEncoderStream.Code[]	BLACK_NONTERMINATING_CODES
private static CCITTFaxEncoderStream.Code[]	BLACK_TERMINATING_CODES
private int[]	changesCurrentRow
private int	changesCurrentRowLength
private int[]	changesReferenceRow
private int	changesReferenceRowLength
private int	columns
private int	currentBufferLength
private int	currentRow
private int	fillOrder
private byte[]	inputBuffer
private int	inputBufferLength
private byte	outputBuffer
private byte	outputBufferBitLength
private int	rows
private java.io.OutputStream	stream
private static CCITTFaxEncoderStream.Code[]	WHITE_NONTERMINATING_CODES
private static CCITTFaxEncoderStream.Code[]	WHITE_TERMINATING_CODES

Constructor Summary

Constructors

Constructor	Description
CCITTFaxEncoderStream(java.io.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

write, write

Methods inherited from class java.lang.Object

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

Field Detail

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 java.io.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 Detail

CCITTFaxEncoderStream

CCITTFaxEncoderStream(java.io.OutputStream stream,
                      int columns,
                      int rows,
                      int fillOrder)

Method Detail

write

public void write(int b)
           throws java.io.IOException

Specified by:

write in class java.io.OutputStream

Throws:

java.io.IOException

flush

public void flush()
           throws java.io.IOException

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.OutputStream

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.OutputStream

Throws:

java.io.IOException

encodeRow

private void encodeRow()
                throws java.io.IOException

Throws:

java.io.IOException

encodeRowType6

private void encodeRowType6()
                     throws java.io.IOException

Throws:

java.io.IOException

getNextChanges

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

writeRun

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

Throws:

java.io.IOException

encode2D

private void encode2D()
               throws java.io.IOException

Throws:

java.io.IOException

getNextRefChanges

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

write

private void write(int code,
                   int codeLength)
            throws java.io.IOException

Throws:

java.io.IOException

writeEOL

private void writeEOL()
               throws java.io.IOException

Throws:

java.io.IOException

fill

private void fill()
           throws java.io.IOException

Throws:

java.io.IOException

clearOutputBuffer

private void clearOutputBuffer()