Class PngDeflater

java.lang.Object

org.eclipse.swt.internal.image.PngDeflater

public class PngDeflater
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	PngDeflater.Code
(package private) static class	PngDeflater.Link
(package private) static class	PngDeflater.Match

Field Summary

Fields

Modifier and Type	Field	Description
(package private) int	adler32
(package private) static final int	BASE
(package private) int	bitCount
(package private) int	buffer
(package private) ByteArrayOutputStream	bytes
(package private) static final PngDeflater.Code[]	distanceCodes
(package private) static final int	HASH
(package private) PngDeflater.Link[]	hashtable
(package private) byte[]	in
(package private) int	inLength
(package private) static final PngDeflater.Code[]	lengthCodes
(package private) static final int	MAX_MATCHES
(package private) static final int	MIN_LENGTH
(package private) static final short[]	mirrorBytes
(package private) int	nextWindow
(package private) PngDeflater.Link[]	window
(package private) static final int	WINDOW

Constructor Summary

Constructors

Constructor	Description
PngDeflater()

Method Summary

Modifier and Type	Method	Description
(package private) void	alignToByte()
(package private) void	compress()
(package private) void	compressHuffmanOnly()
byte[]	deflate(byte[] input)
(package private) PngDeflater.Code	findCode(int value, PngDeflater.Code[] codes)
(package private) PngDeflater.Match	findLongestMatch(int position, PngDeflater.Link firstPosition)
(package private) int	hash(byte[] bytes)
(package private) void	outputLiteral(byte literal)
(package private) void	outputMatch(int length, int distance)
(package private) void	store()
(package private) void	updateAdler(byte value)
(package private) void	updateHashtable(int to, int from)
(package private) void	writeBits(int value, int count)
(package private) void	writeInt(ByteArrayOutputStream baos, int theInt)
(package private) void	writeShortLSB(ByteArrayOutputStream baos, int theShort)

Methods inherited from class Object

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

Field Details

BASE

static final int BASE

See Also:

• Constant Field Values

WINDOW

static final int WINDOW

See Also:

• Constant Field Values

MIN_LENGTH

static final int MIN_LENGTH

See Also:

• Constant Field Values

MAX_MATCHES

static final int MAX_MATCHES

See Also:

• Constant Field Values

HASH

static final int HASH

See Also:

• Constant Field Values

in

byte[] in

inLength

int inLength

bytes

ByteArrayOutputStream bytes

adler32

int adler32

buffer

int buffer

bitCount

int bitCount

hashtable

PngDeflater.Link[] hashtable

window

PngDeflater.Link[] window

nextWindow

int nextWindow

mirrorBytes

static final short[] mirrorBytes

lengthCodes

static final PngDeflater.Code[] lengthCodes

distanceCodes

static final PngDeflater.Code[] distanceCodes

Constructor Details

PngDeflater

public PngDeflater()

Method Details

writeShortLSB

void writeShortLSB(ByteArrayOutputStream baos,
 int theShort)

writeInt

void writeInt(ByteArrayOutputStream baos,
 int theInt)

updateAdler

void updateAdler(byte value)

hash

int hash(byte[] bytes)

writeBits

void writeBits(int value,
 int count)

alignToByte

void alignToByte()

outputLiteral

void outputLiteral(byte literal)

findCode

PngDeflater.Code findCode(int value,
 PngDeflater.Code[] codes)

outputMatch

void outputMatch(int length,
 int distance)

findLongestMatch

PngDeflater.Match findLongestMatch(int position,
 PngDeflater.Link firstPosition)

updateHashtable

void updateHashtable(int to,
 int from)

compress

void compress()

compressHuffmanOnly

void compressHuffmanOnly()

store

void store()

deflate

public byte[] deflate(byte[] input)