IlvRunLengthEncoder Class Reference

RunLength encoder class. More...

#include <ilviews/util/psencode.h>

Inheritance diagram for IlvRunLengthEncoder:

Public Member Functions
	IlvRunLengthEncoder (ILVSTDPREF ostream *stream=0)
	Constructor. More...
	~IlvRunLengthEncoder ()
	Destructor. More...
void	consumeByte (IlUChar byte)
	Consumes a byte. More...
void	flush ()
	Flushes the processed data to the output.
const char *	getPostScriptDecoderName () const
	Returns a string containing the PostScript decoding filter name. More...
void	init ()
	Initializes or reinitializes the instance.
Public Member Functions inherited from IlvPostScriptEncoder
virtual	~IlvPostScriptEncoder ()
	Destructor.
virtual void	consumeBytes (IlUInt count, IlUChar const *bytes)
	Consumes an array of bytes. The default implementation calls consumeByte for each byte in the array. More...
virtual void	emitByte (IlUChar byte)
	Emits a byte. More...
virtual void	emitBytes (IlUInt count, IlUChar const *bytes)
	Emits an array of bytes. More...
IlvPostScriptEncoder *	getEmitter () const
	Return the emitter. More...
ILVSTDPREF ostream *	getStream () const
	Return the stream used by this instance. More...
void	setEmitter (IlvPostScriptEncoder *emitter)
	Sets the emitter for this encoder. More...
virtual void	setStream (ILVSTDPREF ostream *stream)
	Sets the output stream used by this instance. More...

Additional Inherited Members
Static Public Member Functions inherited from IlvPostScriptEncoder
static IlString	GetFullDecoderString (const IlvPostScriptEncoder *encoder)
	Returns the full string for an encoder. It takes into account the sub filters. More...
Protected Member Functions inherited from IlvPostScriptEncoder
	IlvPostScriptEncoder (ILVSTDPREF ostream *stream=0)
	Constructor. More...

Detailed Description

RunLength encoder class.

Library: display

This class allows you to encode binary data to data in a run length encoded binary description. NOT YET IMPLEMENTED, just writes runs of 1. The generated data is a sequence of runs, each run consists of a length byte followed by 1 to 127 bytes of data. If the length byte is in the range 0 to 127, the following lenght + 1 byte (1 to 128 bytes) are to be copied literally upon decompression. if length is in the range 129 to 255, the following single byte is to be replicated 257 - length (2 to 128 times) upon decompression.

See also IlvPostScriptEncoder, IlvASCIIHexEncoder, IlvASCII85Encoder, IlvPSDevice, IlvPSColorDevice

Constructor & Destructor Documentation

IlvRunLengthEncoder::IlvRunLengthEncoder

(

ILVSTDPREF ostream *

stream = 0

)

Constructor.

Initializes a new instance of IlvASCII85Encoder.

Parameters

stream

The output stream used by this instance.

IlvRunLengthEncoder::~IlvRunLengthEncoder

(

)

Destructor.

Flushes all remaining data.

Member Function Documentation

void IlvRunLengthEncoder::consumeByte ( IlUChar  byte )

virtual

Consumes a byte.

Parameters

byte	The received byte.

Implements IlvPostScriptEncoder.

const char* IlvRunLengthEncoder::getPostScriptDecoderName ( ) const

virtual

Returns a string containing the PostScript decoding filter name.

Returns

The string "/RunLengthDecode".

Implements IlvPostScriptEncoder.