idCompressor_LZW Class Reference

Inheritance diagram for idCompressor_LZW:

Public Member Functions
	idCompressor_LZW (void)
void	Init (idFile *f, bool compress, int wordLength)
void	FinishCompress (void)
int	Write (const void *inData, int inLength)
int	Read (void *outData, int outLength)
Public Member Functions inherited from idCompressor_BitStream
	idCompressor_BitStream (void)
float	GetCompressionRatio (void) const
Public Member Functions inherited from idCompressor_None
	idCompressor_None (void)
const char *	GetName (void)
const char *	GetFullPath (void)
int	Length (void)
ID_TIME_T	Timestamp (void)
int	Tell (void)
void	ForceFlush (void)
void	Flush (void)
int	Seek (long offset, fsOrigin_t origin)
Public Member Functions inherited from idFile
virtual	~idFile (void)
virtual void	Rewind (void)
virtual int	Printf (const char *fmt,...) id_attribute((format(printf
virtual int virtual int	VPrintf (const char *fmt, va_list arg)
virtual int	WriteFloatString (const char *fmt,...) id_attribute((format(printf
virtual int virtual int	ReadInt (int &value)
virtual int	ReadUnsignedInt (unsigned int &value)
virtual int	ReadShort (short &value)
virtual int	ReadUnsignedShort (unsigned short &value)
virtual int	ReadChar (char &value)
virtual int	ReadUnsignedChar (unsigned char &value)
virtual int	ReadFloat (float &value)
virtual int	ReadBool (bool &value)
virtual int	ReadString (idStr &string)
virtual int	ReadVec2 (idVec2 &vec)
virtual int	ReadVec3 (idVec3 &vec)
virtual int	ReadVec4 (idVec4 &vec)
virtual int	ReadVec6 (idVec6 &vec)
virtual int	ReadMat3 (idMat3 &mat)
virtual int	WriteInt (const int value)
virtual int	WriteUnsignedInt (const unsigned int value)
virtual int	WriteShort (const short value)
virtual int	WriteUnsignedShort (unsigned short value)
virtual int	WriteChar (const char value)
virtual int	WriteUnsignedChar (const unsigned char value)
virtual int	WriteFloat (const float value)
virtual int	WriteBool (const bool value)
virtual int	WriteString (const char *string)
virtual int	WriteVec2 (const idVec2 &vec)
virtual int	WriteVec3 (const idVec3 &vec)
virtual int	WriteVec4 (const idVec4 &vec)
virtual int	WriteVec6 (const idVec6 &vec)
virtual int	WriteMat3 (const idMat3 &mat)

Protected Member Functions
int	AddToDict (int w, int k)
int	Lookup (int w, int k)
bool	BumpBits ()
int	WriteChain (int code)
void	DecompressBlock ()
Protected Member Functions inherited from idCompressor_BitStream
void	InitCompress (const void *inData, const int inLength)
void	InitDecompress (void *outData, int outLength)
void	WriteBits (int value, int numBits)
int	ReadBits (int numBits)
void	UnreadBits (int numBits)
int	Compare (const byte *src1, int bitPtr1, const byte *src2, int bitPtr2, int maxBits) const

Protected Attributes
struct {
int   k
int   w
}	dictionary [LZW_DICT_SIZE]
idHashIndex	index
int	nextCode
int	codeBits
byte	block [LZW_BLOCK_SIZE]
int	blockSize
int	blockIndex
int	oldCode
Protected Attributes inherited from idCompressor_BitStream
byte	buffer [65536]
int	wordLength
int	readTotalBytes
int	readLength
int	readByte
int	readBit
const byte *	readData
int	writeTotalBytes
int	writeLength
int	writeByte
int	writeBit
byte *	writeData
Protected Attributes inherited from idCompressor_None
idFile *	file
bool	compress

Static Protected Attributes
static const int	LZW_BLOCK_SIZE = 32767
static const int	LZW_START_BITS = 9
static const int	LZW_FIRST_CODE = (1 << (LZW_START_BITS-1))
static const int	LZW_DICT_BITS = 12
static const int	LZW_DICT_SIZE = 1 << LZW_DICT_BITS

Additional Inherited Members
Static Public Member Functions inherited from idCompressor
static idCompressor *	AllocNoCompression (void)
static idCompressor *	AllocBitStream (void)
static idCompressor *	AllocRunLength (void)
static idCompressor *	AllocRunLength_ZeroBased (void)
static idCompressor *	AllocHuffman (void)
static idCompressor *	AllocArithmetic (void)
static idCompressor *	AllocLZSS (void)
static idCompressor *	AllocLZSS_WordAligned (void)
static idCompressor *	AllocLZW (void)

Detailed Description

Definition at line 2224 of file Compressor.cpp.

Constructor & Destructor Documentation

idCompressor_LZW::idCompressor_LZW ( void  )

inline

Definition at line 2226 of file Compressor.cpp.

Member Function Documentation

int idCompressor_LZW::AddToDict ( int  w, int  k  )

protected

Definition at line 2356 of file Compressor.cpp.

bool idCompressor_LZW::BumpBits ( )

protected

Definition at line 2371 of file Compressor.cpp.

void idCompressor_LZW::DecompressBlock ( void  )

protected

Definition at line 2450 of file Compressor.cpp.

void idCompressor_LZW::FinishCompress ( void  )

virtual

Reimplemented from idCompressor_BitStream.

Definition at line 2389 of file Compressor.cpp.

void idCompressor_LZW::Init ( idFile *  f, bool  compress, int  wordLength  )

virtual

Reimplemented from idCompressor_BitStream.

Definition at line 2276 of file Compressor.cpp.

int idCompressor_LZW::Lookup ( int  w, int  k  )

protected

Definition at line 2335 of file Compressor.cpp.

int idCompressor_LZW::Read ( void *  outData, int  outLength  )

virtual

Reimplemented from idCompressor_BitStream.

Definition at line 2300 of file Compressor.cpp.

int idCompressor_LZW::Write ( const void *  inData, int  inLength  )

virtual

Reimplemented from idCompressor_BitStream.

Definition at line 2399 of file Compressor.cpp.

int idCompressor_LZW::WriteChain ( int  code )

protected

Definition at line 2429 of file Compressor.cpp.

Member Data Documentation

byte idCompressor_LZW::block[LZW_BLOCK_SIZE]

protected

Definition at line 2260 of file Compressor.cpp.

int idCompressor_LZW::blockIndex

protected

Definition at line 2262 of file Compressor.cpp.

int idCompressor_LZW::blockSize

protected

Definition at line 2261 of file Compressor.cpp.

int idCompressor_LZW::codeBits

protected

Definition at line 2257 of file Compressor.cpp.

struct { ... } idCompressor_LZW::dictionary[LZW_DICT_SIZE]

idHashIndex idCompressor_LZW::index

protected

Definition at line 2254 of file Compressor.cpp.

int idCompressor_LZW::k

Definition at line 2251 of file Compressor.cpp.

const int idCompressor_LZW::LZW_BLOCK_SIZE = 32767

staticprotected

Definition at line 2243 of file Compressor.cpp.

const int idCompressor_LZW::LZW_DICT_BITS = 12

staticprotected

Definition at line 2246 of file Compressor.cpp.

const int idCompressor_LZW::LZW_DICT_SIZE = 1 << LZW_DICT_BITS

staticprotected

Definition at line 2247 of file Compressor.cpp.

const int idCompressor_LZW::LZW_FIRST_CODE = (1 << (LZW_START_BITS-1))

staticprotected

Definition at line 2245 of file Compressor.cpp.

const int idCompressor_LZW::LZW_START_BITS = 9

staticprotected

Definition at line 2244 of file Compressor.cpp.

int idCompressor_LZW::nextCode

protected

Definition at line 2256 of file Compressor.cpp.

int idCompressor_LZW::oldCode

protected

Definition at line 2268 of file Compressor.cpp.

int idCompressor_LZW::w

Definition at line 2252 of file Compressor.cpp.

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

• neo/framework/Compressor.cpp