Celartem::DjVu::JBIG2EncodeHelper Class Reference

#include <djv_jbig2encoder.h>

Inheritance diagram for Celartem::DjVu::JBIG2EncodeHelper:

Public Member Functions
virtual void	encodeDict (Stream *inStream, const JB2Dictionary *inDict=NULL)=0
virtual AutoPtr< Chunk >	encodeJB2dChunk (const JB2Dictionary *inDict=NULL)=0
virtual void	encodePage (Stream *inStream, const JB2Page *inPage)=0
virtual AutoPtr< Chunk >	encodeJB2pChunk (const JB2Page *inPage)=0
virtual void	saveToJBIG2File (Stream *inStream, const JB2Page *inPage)=0
Public Member Functions inherited from Celartem::Referable
	Referable ()
void	addRef () const
void	releaseRef () const
size_t	getReferenceCount () const

Static Public Member Functions
static AutoPtr< JBIG2EncodeHelper >	create (bool inUseRefine)
Static Public Member Functions inherited from Celartem::Referable
static void	dumpDbgAllRefCount ()

Detailed Description

This class provides supplemental functions to encode JBIG2 images.
Please note that the encoder equips only some parts of JBIG2 specification enough to support JBIG2 on DjVu and PDF.

See Also

JB2Page, JBIG2DecodeHelper

Member Function Documentation

static AutoPtr<JBIG2EncodeHelper> Celartem::DjVu::JBIG2EncodeHelper::create ( bool  inUseRefine )

static

Create a JBIG2EncodeHelper instance. This class is used with JB2Page to encode JBIG2 data.

Parameters

inUseRefine

Although refinement improves JBIG2 compression ratio, it causes crash in Adobe products.

virtual void Celartem::DjVu::JBIG2EncodeHelper::encodeDict ( Stream *  inStream, const JB2Dictionary *  inDict = NULL  )

pure virtual

Encode JBIG2 dictionary.
This method throws an exception if no dictionary is specified either explicitly or implicitly.

Parameters

inStream	Stream write to.
inDict	Dictionary to write. If any encodePage calls with a page associated with a dictionary before this call, inDict can be NULL.

virtual AutoPtr<Chunk> Celartem::DjVu::JBIG2EncodeHelper::encodeJB2dChunk ( const JB2Dictionary *  inDict = NULL )

pure virtual

Encode JBIG2 dictionary (JB2d).
This method throws an exception if no dictionary is specified either explicitly or implicitly.

Parameters

inDict

Dictionary to write. If any encodePage calls with a page associated with a dictionary before this call, inDict can be NULL.

Returns

Pointer to a newly created JB2d chunk.

virtual AutoPtr<Chunk> Celartem::DjVu::JBIG2EncodeHelper::encodeJB2pChunk ( const JB2Page *  inPage )

pure virtual

Encode JBIG2 page (JB2p).

Parameters

inPage

Page to encode. If the page has associated with a dictionary, the dictionary should be also encoded separately.

Returns

Pointer to a newly created JB2p chunk.

virtual void Celartem::DjVu::JBIG2EncodeHelper::encodePage ( Stream *  inStream, const JB2Page *  inPage  )

pure virtual

Encode JBIG2 page.

Parameters

inStream	Stream write to.
inPage	Page to encode. If the page has associated with a dictionary, the dictionary should be also encoded separately.

virtual void Celartem::DjVu::JBIG2EncodeHelper::saveToJBIG2File ( Stream *  inStream, const JB2Page *  inPage  )

pure virtual

Encode JBIG2 file.

Parameters

inStream	Stream write to.
inPage	Page to encode.

---

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

• djv_jbig2encoder.h