Modifier and Type	Class and Description
pack-priv class	LZMAEncoder.LengthEncoder
pack-priv class	LZMAEncoder.LiteralEncoder

Field Summary

Modifier and Type	Field and Description
private static final int	ALIGN_PRICE_UPDATE_INTERVAL
private int	alignPriceCount
private final int[]	alignPrices
pack-priv int	back
private static final int	DIST_PRICE_UPDATE_INTERVAL
private int	distPriceCount
private final int[][]	distSlotPrices
private final int	distSlotPricesSize
private final int[][]	fullDistPrices
pack-priv final LZMAEncoder.LiteralEncoder	literalEncoder
pack-priv final LZEncoder	lz
private static final int	LZMA2_COMPRESSED_LIMIT LZMA2 chunk is considered full when its compressed size exceeds `LZMA2_COMPRESSED_LIMIT`.
private static final int	LZMA2_UNCOMPRESSED_LIMIT LZMA2 chunk is considered full when its uncompressed size exceeds `LZMA2_UNCOMPRESSED_LIMIT`.
pack-priv final LZMAEncoder.LengthEncoder	matchLenEncoder
public static final int	MODE_FAST
public static final int	MODE_NORMAL
pack-priv final int	niceLen
private final RangeEncoder	rc
pack-priv int	readAhead
pack-priv final LZMAEncoder.LengthEncoder	repLenEncoder
private int	uncompressedSize

Constructor Summary

Access	Constructor and Description
pack-priv	LZMAEncoder(RangeEncoder rc, LZEncoder lz, int lc, int lp, int pb, int dictSize, int niceLen)

Method Summary

Modifier and Type	Method and Description
public void	encodeForLZMA1() Compress for LZMA1.
public boolean	Returns: true if the LZMA2 chunk became full, false otherwise encodeForLZMA2() Compresses for LZMA2.
private boolean	encodeInit()
public void	encodeLZMA1EndMarker()
private void	encodeMatch(int dist, int len, int posState)
private void	encodeRepMatch(int rep, int len, int posState)
private boolean	encodeSymbol()
pack-priv int	getAnyMatchPrice(State state, int posState)
pack-priv int	getAnyRepPrice(int anyMatchPrice, State state)
public static int	getDistSlot(int dist) Gets an integer [0, 63] matching the highest two bits of an integer.
public static LZMAEncoder	getInstance(RangeEncoder rc, int lc, int lp, int pb, int mode, int dictSize, int extraSizeBefore, int niceLen, int mf, int depthLimit, ArrayCache arrayCache)
pack-priv int	getLongRepAndLenPrice(int rep, int len, State state, int posState)
pack-priv int	getLongRepPrice(int anyRepPrice, int rep, State state, int posState)
public LZEncoder	getLZEncoder()
pack-priv int	getMatchAndLenPrice(int normalMatchPrice, int dist, int len, int posState)
pack-priv Matches	getMatches()
public static int	getMemoryUsage(int mode, int dictSize, int extraSizeBefore, int mf)
pack-priv abstract int	getNextSymbol() Gets the next LZMA symbol.
pack-priv int	getNormalMatchPrice(int anyMatchPrice, State state)
pack-priv int	getShortRepPrice(int anyRepPrice, State state, int posState)
public int	getUncompressedSize()
public void	putArraysToCache(ArrayCache arrayCache)
public void	reset() Overrides org.tukaani.xz.lzma.LZMACoder.reset.
public void	resetUncompressedSize()
pack-priv void	skip(int len)
private void	updateAlignPrices()
private void	updateDistPrices()
pack-priv void	updatePrices() Updates the lookup tables used for calculating match distance and length prices.

Inherited from org.tukaani.xz.lzma.LZMACoder:: getDistState

Field Detail

ALIGN_PRICE_UPDATE_INTERVAL	back to summary
private static final int ALIGN_PRICE_UPDATE_INTERVAL

alignPriceCount	back to summary
private int alignPriceCount

alignPrices	back to summary
private final int[] alignPrices

back	back to summary
pack-priv int back

DIST_PRICE_UPDATE_INTERVAL	back to summary
private static final int DIST_PRICE_UPDATE_INTERVAL

distPriceCount	back to summary
private int distPriceCount

distSlotPrices	back to summary
private final int[][] distSlotPrices

distSlotPricesSize	back to summary
private final int distSlotPricesSize

fullDistPrices	back to summary
private final int[][] fullDistPrices

literalEncoder	back to summary
pack-priv final LZMAEncoder.LiteralEncoder literalEncoder

lz	back to summary
pack-priv final LZEncoder lz

LZMA2_COMPRESSED_LIMIT back to summary

LZMA2_COMPRESSED_LIMIT	back to summary
private static final int LZMA2_COMPRESSED_LIMIT LZMA2 chunk is considered full when its compressed size exceeds `LZMA2_COMPRESSED_LIMIT`. The maximum compressed size of a LZMA2 chunk is 64 KiB. A single LZMA symbol might use 20 bytes of space even though it usually takes just one byte or so. Two more bytes are needed for LZMA2 uncompressed chunks (see LZMA2OutputStream.writeChunk). Leave a little safety margin and use 26 bytes.

private static final int LZMA2_COMPRESSED_LIMIT

LZMA2 chunk is considered full when its compressed size exceeds LZMA2_COMPRESSED_LIMIT.

The maximum compressed size of a LZMA2 chunk is 64 KiB. A single LZMA symbol might use 20 bytes of space even though it usually takes just one byte or so. Two more bytes are needed for LZMA2 uncompressed chunks (see LZMA2OutputStream.writeChunk). Leave a little safety margin and use 26 bytes.

LZMA2_UNCOMPRESSED_LIMIT back to summary

LZMA2_UNCOMPRESSED_LIMIT	back to summary
private static final int LZMA2_UNCOMPRESSED_LIMIT LZMA2 chunk is considered full when its uncompressed size exceeds `LZMA2_UNCOMPRESSED_LIMIT`. A compressed LZMA2 chunk can hold 2 MiB of uncompressed data. A single LZMA symbol may indicate up to MATCH_LEN_MAX bytes of data, so the LZMA2 chunk is considered full when there is less space than MATCH_LEN_MAX bytes.

private static final int LZMA2_UNCOMPRESSED_LIMIT

LZMA2 chunk is considered full when its uncompressed size exceeds LZMA2_UNCOMPRESSED_LIMIT.

A compressed LZMA2 chunk can hold 2 MiB of uncompressed data. A single LZMA symbol may indicate up to MATCH_LEN_MAX bytes of data, so the LZMA2 chunk is considered full when there is less space than MATCH_LEN_MAX bytes.

matchLenEncoder	back to summary
pack-priv final LZMAEncoder.LengthEncoder matchLenEncoder

MODE_FAST	back to summary
public static final int MODE_FAST

MODE_NORMAL	back to summary
public static final int MODE_NORMAL

niceLen	back to summary
pack-priv final int niceLen

rc	back to summary
private final RangeEncoder rc

readAhead	back to summary
pack-priv int readAhead

repLenEncoder	back to summary
pack-priv final LZMAEncoder.LengthEncoder repLenEncoder

uncompressedSize	back to summary
private int uncompressedSize

Constructor Detail

LZMAEncoder	back to summary
pack-priv LZMAEncoder(RangeEncoder rc, LZEncoder lz, int lc, int lp, int pb, int dictSize, int niceLen)

Method Detail

encodeForLZMA1	back to summary
public void encodeForLZMA1() throws IOException Compress for LZMA1.

encodeForLZMA2	back to summary
public boolean encodeForLZMA2() Compresses for LZMA2. Returns:boolean true if the LZMA2 chunk became full, false otherwise

encodeForLZMA2

back to summary

public boolean encodeForLZMA2()

Compresses for LZMA2.

Returns:boolean: true if the LZMA2 chunk became full, false otherwise

encodeInit	back to summary
private boolean encodeInit() throws IOException

encodeLZMA1EndMarker	back to summary
public void encodeLZMA1EndMarker() throws IOException

encodeMatch	back to summary
private void encodeMatch(int dist, int len, int posState) throws IOException

encodeRepMatch	back to summary
private void encodeRepMatch(int rep, int len, int posState) throws IOException

encodeSymbol	back to summary
private boolean encodeSymbol() throws IOException

getAnyMatchPrice	back to summary
pack-priv int getAnyMatchPrice(State state, int posState)

getAnyRepPrice	back to summary
pack-priv int getAnyRepPrice(int anyMatchPrice, State state)

getDistSlot	back to summary
public static int getDistSlot(int dist) Gets an integer [0, 63] matching the highest two bits of an integer. This is like bit scan reverse (BSR) on x86 except that this also cares about the second highest bit.

getInstance	back to summary
public static LZMAEncoder getInstance(RangeEncoder rc, int lc, int lp, int pb, int mode, int dictSize, int extraSizeBefore, int niceLen, int mf, int depthLimit, ArrayCache arrayCache)

getLongRepAndLenPrice	back to summary
pack-priv int getLongRepAndLenPrice(int rep, int len, State state, int posState)

getLongRepPrice	back to summary
pack-priv int getLongRepPrice(int anyRepPrice, int rep, State state, int posState)

getLZEncoder	back to summary
public LZEncoder getLZEncoder()

getMatchAndLenPrice	back to summary
pack-priv int getMatchAndLenPrice(int normalMatchPrice, int dist, int len, int posState)

getMatches	back to summary
pack-priv Matches getMatches()

getMemoryUsage	back to summary
public static int getMemoryUsage(int mode, int dictSize, int extraSizeBefore, int mf)

getNextSymbol back to summary

getNextSymbol	back to summary
pack-priv abstract int getNextSymbol() Gets the next LZMA symbol. There are three types of symbols: literal (a single byte), repeated match, and normal match. The symbol is indicated by the return value and by the variable `back`. Literal: `back == -1` and return value is `1`. The literal itself needs to be read from `lz` separately. Repeated match: `back` is in the range [0, 3] and the return value is the length of the repeated match. Normal match: `back - REPS (back - 4) is the distance of the match and the return value is the length of the match.`

pack-priv abstract int getNextSymbol()

Gets the next LZMA symbol.

There are three types of symbols: literal (a single byte), repeated match, and normal match. The symbol is indicated by the return value and by the variable back.

Literal: back == -1 and return value is 1. The literal itself needs to be read from lz separately.

Repeated match: back is in the range [0, 3] and the return value is the length of the repeated match.

Normal match: back - REPS (back - 4) is the distance of the match and the return value is the length of the match.

getNormalMatchPrice	back to summary
pack-priv int getNormalMatchPrice(int anyMatchPrice, State state)

getShortRepPrice	back to summary
pack-priv int getShortRepPrice(int anyRepPrice, State state, int posState)

getUncompressedSize	back to summary
public int getUncompressedSize()

putArraysToCache	back to summary
public void putArraysToCache(ArrayCache arrayCache)

reset	back to summary
public void reset() Overrides org.tukaani.xz.lzma.LZMACoder.reset.

resetUncompressedSize	back to summary
public void resetUncompressedSize()

skip	back to summary
pack-priv void skip(int len)

updateAlignPrices	back to summary
private void updateAlignPrices()

updateDistPrices	back to summary
private void updateDistPrices()

updatePrices	back to summary
pack-priv void updatePrices() Updates the lookup tables used for calculating match distance and length prices. The updating is skipped for performance reasons if the tables haven't changed much since the previous update.

org.tukaani.xz.lzma back to summary

pack-priv Class LZMAEncoder.LengthEncoder

Class Inheritance

extends LengthCoder

java.lang.Object
org.tukaani.xz.lzma.LZMACoder.LengthCoder
org.tukaani.xz.lzma.LZMAEncoder.LengthEncoder

Field Summary

Modifier and Type	Field and Description
private final int[]	counters
private static final int	PRICE_UPDATE_INTERVAL The prices are updated after at least `PRICE_UPDATE_INTERVAL` many lengths have been encoded with the same posState.
private final int[][]	prices

Inherited from org.tukaani.xz.lzma.LZMACoder.LengthCoder:: choice high HIGH_SYMBOLS low LOW_SYMBOLS mid MID_SYMBOLS

Constructor Summary

Access	Constructor and Description
pack-priv	LengthEncoder(int pb, int niceLen)

Method Summary

Modifier and Type	Method and Description
pack-priv void	encode(int len, int posState)
pack-priv int	getPrice(int len, int posState)
pack-priv void	reset() Overrides org.tukaani.xz.lzma.LZMACoder.LengthCoder.reset.
pack-priv void	updatePrices()
private void	updatePrices(int posState)

Field Detail

counters	back to summary
private final int[] counters

PRICE_UPDATE_INTERVAL	back to summary
private static final int PRICE_UPDATE_INTERVAL The prices are updated after at least `PRICE_UPDATE_INTERVAL` many lengths have been encoded with the same posState.

prices	back to summary
private final int[][] prices

Constructor Detail

LengthEncoder	back to summary
pack-priv LengthEncoder(int pb, int niceLen)

Method Detail

encode	back to summary
pack-priv void encode(int len, int posState) throws IOException

getPrice	back to summary
pack-priv int getPrice(int len, int posState)

reset	back to summary
pack-priv void reset() Overrides org.tukaani.xz.lzma.LZMACoder.LengthCoder.reset.

updatePrices	back to summary
pack-priv void updatePrices()

updatePrices	back to summary
private void updatePrices(int posState)

org.tukaani.xz.lzma back to summary

pack-priv Class LZMAEncoder.LiteralEncoder

Class Inheritance

extends LiteralCoder

java.lang.Object
org.tukaani.xz.lzma.LZMACoder.LiteralCoder
org.tukaani.xz.lzma.LZMAEncoder.LiteralEncoder

Nested and Inner Type Summary

Modifier and Type	Class and Description
private class	LZMAEncoder.LiteralEncoder.LiteralSubencoder

Field Summary

Modifier and Type	Field and Description
private final LZMAEncoder.LiteralEncoder.LiteralSubencoder[]	subencoders

Constructor Summary

Access	Constructor and Description
pack-priv	LiteralEncoder(int lc, int lp)

Method Summary

Modifier and Type	Method and Description
pack-priv void	encode()
pack-priv void	encodeInit()
pack-priv int	getPrice(int curByte, int matchByte, int prevByte, int pos, State state)
pack-priv void	reset()

Inherited from org.tukaani.xz.lzma.LZMACoder.LiteralCoder:: getSubcoderIndex

Field Detail

subencoders	back to summary
private final LZMAEncoder.LiteralEncoder.LiteralSubencoder[] subencoders

Constructor Detail

LiteralEncoder	back to summary
pack-priv LiteralEncoder(int lc, int lp)

Method Detail

encode	back to summary
pack-priv void encode() throws IOException

encodeInit	back to summary
pack-priv void encodeInit() throws IOException

getPrice	back to summary
pack-priv int getPrice(int curByte, int matchByte, int prevByte, int pos, State state)

reset	back to summary
pack-priv void reset()

org.tukaani.xz.lzma back to summary

private Class LZMAEncoder.LiteralEncoder.LiteralSubencoder

Class Inheritance

extends LiteralSubcoder

java.lang.Object
org.tukaani.xz.lzma.LZMACoder.LiteralCoder.LiteralSubcoder
org.tukaani.xz.lzma.LZMAEncoder.LiteralEncoder.LiteralSubencoder

Field Summary

Inherited from org.tukaani.xz.lzma.LZMACoder.LiteralCoder.LiteralSubcoder:: probs

Constructor Summary

Access	Constructor and Description
private	LiteralSubencoder()

Method Summary

Modifier and Type	Method and Description
pack-priv void	encode()
pack-priv int	getMatchedPrice(int symbol, int matchByte)
pack-priv int	getNormalPrice(int symbol)

Inherited from org.tukaani.xz.lzma.LZMACoder.LiteralCoder.LiteralSubcoder:: reset

Constructor Detail

LiteralSubencoder	back to summary
private LiteralSubencoder()

Method Detail

encode	back to summary
pack-priv void encode() throws IOException

getMatchedPrice	back to summary
pack-priv int getMatchedPrice(int symbol, int matchByte)

getNormalPrice	back to summary
pack-priv int getNormalPrice(int symbol)

public abstract Class LZMAEncoder

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

pack-priv Class LZMAEncoder.LengthEncoder

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

pack-priv Class LZMAEncoder.LiteralEncoder

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

private Class LZMAEncoder.LiteralEncoder.LiteralSubencoder

Field Summary

Constructor Summary

Method Summary

Constructor Detail

Method Detail