This is the DeflaterHuffman class. More...

Collaboration diagram for ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman:

Classes
class	Tree

Public Member Functions
	DeflaterHuffman (DeflaterPending pending)
	Construct instance with pending buffer.
void	Reset ()
	Reset internal state.
void	SendAllTrees (int blTreeCodes)
	Write all trees to pending buffer.
void	CompressBlock ()
	Compress current buffer writing data to pending buffer.
void	FlushStoredBlock (byte[] stored, int storedOffset, int storedLength, bool lastBlock)
	Flush block to output with no compression.
void	FlushBlock (byte[] stored, int storedOffset, int storedLength, bool lastBlock)
	Flush block to output with compression.
bool	IsFull ()
	Get value indicating if internal buffer is full.
bool	TallyLit (int literal)
	Add literal to buffer.
bool	TallyDist (int distance, int length)
	Add distance code and length to literal and distance trees.

Static Public Member Functions
static short	BitReverse (int toReverse)
	Reverse the bits of a 16 bit value.

Public Attributes
DeflaterPending	pending
	Pending buffer to use.

Static Private Member Functions
static	DeflaterHuffman ()
static int	Lcode (int length)
static int	Dcode (int distance)

Private Attributes
Tree	literalTree
Tree	distTree
Tree	blTree
short[]	d_buf
byte[]	l_buf
int	last_lit
int	extra_bits

Static Private Attributes
const int	BUFSIZE = 1 << (DeflaterConstants.DEFAULT_MEM_LEVEL + 6)
const int	LITERAL_NUM = 286
const int	DIST_NUM = 30
const int	BITLEN_NUM = 19
const int	REP_3_6 = 16
const int	REP_3_10 = 17
const int	REP_11_138 = 18
const int	EOF_SYMBOL = 256
static readonly int[]	BL_ORDER = { 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 }
static readonly byte[]	bit4Reverse
static short[]	staticLCodes
static byte[]	staticLLength
static short[]	staticDCodes
static byte[]	staticDLength

Detailed Description

This is the DeflaterHuffman class.

This class is not thread safe. This is inherent in the API, due to the split of Deflate and SetInput.

author of the original java version : Jochen Hoenicke

Constructor & Destructor Documentation

◆ DeflaterHuffman() [1/2]

ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.DeflaterHuffman ( )

staticprivate

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◆ DeflaterHuffman() [2/2]

ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.DeflaterHuffman ( DeflaterPending pending )

Construct instance with pending buffer.

Parameters

pending Pending buffer to use

Member Function Documentation

◆ BitReverse()

short ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.BitReverse ( int toReverse )

static

Reverse the bits of a 16 bit value.

Parameters

toReverse Value to reverse bits

Returns: Value with bits reversed

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◆ CompressBlock()

void ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.CompressBlock ( )

Compress current buffer writing data to pending buffer.

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◆ Dcode()

int ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.Dcode ( int distance )

staticprivate

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◆ FlushBlock()

void ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.FlushBlock	(	byte[]	stored,
		int	storedOffset,
		int	storedLength,
		bool	lastBlock )

Flush block to output with compression.

Parameters

stored	Data to flush
storedOffset	Index of first byte to flush
storedLength	Count of bytes to flush
lastBlock	True if this is the last block

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◆ FlushStoredBlock()

void ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.FlushStoredBlock	(	byte[]	stored,
		int	storedOffset,
		int	storedLength,
		bool	lastBlock )

Flush block to output with no compression.

Parameters

stored	Data to write
storedOffset	Index of first byte to write
storedLength	Count of bytes to write
lastBlock	True if this is the last block

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◆ IsFull()

bool ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.IsFull ( )

Get value indicating if internal buffer is full.

Returns: true if buffer is full

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◆ Lcode()

int ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.Lcode ( int length )

staticprivate

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◆ Reset()

void ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.Reset ( )

Reset internal state.

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◆ SendAllTrees()

void ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.SendAllTrees ( int blTreeCodes )

Write all trees to pending buffer.

Parameters

blTreeCodes The number/rank of treecodes to send.

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◆ TallyDist()

bool ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.TallyDist	(	int	distance,
		int	length )

Add distance code and length to literal and distance trees.

Parameters

distance	Distance code
length	Length

Returns: Value indicating if internal buffer is full

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◆ TallyLit()

bool ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.TallyLit ( int literal )

Add literal to buffer.

Parameters

literal Literal value to add to buffer.

Returns: Value indicating internal buffer is full

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Member Data Documentation

◆ bit4Reverse

readonly byte [] ICSharpCode.SharpZipLib.Zip.Compression.DeflaterHuffman.bit4Reverse

staticprivate

Initial value:

The documentation for this class was generated from the following file:

ICSharpCode.SharpZLib/Zip/Compression/DeflaterHuffman.cs

Classes

Public Member Functions

Static Public Member Functions

Public Attributes

Static Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ DeflaterHuffman() [1/2]

◆ DeflaterHuffman() [2/2]

Member Function Documentation

◆ BitReverse()

◆ CompressBlock()

◆ Dcode()

◆ FlushBlock()

◆ FlushStoredBlock()

◆ IsFull()

◆ Lcode()

◆ Reset()

◆ SendAllTrees()

◆ TallyDist()

◆ TallyLit()

Member Data Documentation

◆ bit4Reverse

◆ BITLEN_NUM

◆ BL_ORDER

◆ blTree

◆ BUFSIZE

◆ d_buf

◆ DIST_NUM

◆ distTree

◆ EOF_SYMBOL

◆ extra_bits

◆ l_buf

◆ last_lit

◆ LITERAL_NUM

◆ literalTree

◆ pending

◆ REP_11_138

◆ REP_3_10

◆ REP_3_6

◆ staticDCodes

◆ staticDLength

◆ staticLCodes

◆ staticLLength