RunLength encoder class. More...

#include <ilviews/util/psencode.h>

Inheritance diagram for IlvRunLengthEncoder:

Public Member Functions
	IlvRunLengthEncoder (std::ostream *stream=0)
	Initializes a new `IlvASCII85Encoder` instance. More...

virtual void	consumeByte (IlUChar byte)
	Consumes a byte. More...

virtual void	flush ()
	Flushes the processed data to the output.

virtual const char *	getPostScriptDecoderName () const
	Returns a string containing the PostScript decoding filter name. More...

virtual void	init ()
	Initializes or reinitializes the instance.

Public Member Functions inherited from IlvPostScriptEncoder
virtual void	consumeBytes (IlUInt count, IlUChar const *bytes)
	Consumes an array of bytes. 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...

std::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 (std::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 *pse)
	Returns the full string for an encoder. More...

Protected Member Functions inherited from IlvPostScriptEncoder
	IlvPostScriptEncoder (std::ostream *stream=0)
	Initializes a new instance `IlvPostScriptEncoder` instance. More...

Detailed Description

RunLength encoder class.

Library: xviews or winviews or mviews (mutually exclusive)
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 length + 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::IlvRunLengthEncoder ( std::ostream * stream = 0 )

Initializes a new IlvASCII85Encoder instance.

Parameters

stream The output stream used by this instance.

Member Function Documentation

§ consumeByte()

virtual void IlvRunLengthEncoder::consumeByte ( IlUChar byte )

virtual

Consumes a byte.

Parameters

byte	The received byte.

Implements IlvPostScriptEncoder.

§ getPostScriptDecoderName()

virtual const char* IlvRunLengthEncoder::getPostScriptDecoderName ( ) const