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CImageDecodeConstruct Class Reference

class CImageDecodeConstruct : public CBase

Provides functions related to constructing decoders.

Objects of this class are loaded by ECOM, and it is this class which is responsible for instantiating the decoder plugins. Plugin writers must derive their own plugin specific variants. The derived class is responsible for defining its own factory function to create instances of itself.

Inherits from

CImageDecodeConstruct
- CBase

Public Member Functions
	~CImageDecodeConstruct ()
IMPORT_C TUid	ImplementationUid ()
IMPORT_C CImageDecoder *	NewDecoderL ()
CImageDecoderPlugin *	NewPluginL ()
IMPORT_C TBool	RequestThread ()

Protected Member Functions
	CImageDecodeConstruct ()
IMPORT_C void	ConstructL ()

Private Member Functions
IMPORT_C void	ReservedVirtual1 ()
IMPORT_C void	ReservedVirtual2 ()
IMPORT_C void	ReservedVirtual3 ()
IMPORT_C void	ReservedVirtual4 ()

Inherited Functions
	CBase::CBase()
	CBase::Delete(CBase *)
	CBase::Extension_(TUint,TAny &,TAny )
	CBase::operator new(TUint)
	CBase::operator new(TUint,TAny *)
	CBase::operator new(TUint,TLeave)
	CBase::operator new(TUint,TLeave,TUint)
	CBase::operator new(TUint,TUint)
	CBase::~CBase()

Private Attributes
TUid	iDtorIDKey
TAny *	iReserved

Constructor & Destructor Documentation

CImageDecodeConstruct()

IMPORT_C

CImageDecodeConstruct

(

)

[protected]

Default constructor

~CImageDecodeConstruct()

IMPORT_C

~CImageDecodeConstruct

(

)

Destructor

Member Functions Documentation

ConstructL()

IMPORT_C void

ConstructL

(

)

[protected]

Second stage constructor. This should be called during construction of the derived class.

ImplementationUid()

IMPORT_C TUid

ImplementationUid

(

)

const

Returns the decoder implementation UID.

NewDecoderL()

IMPORT_C CImageDecoder *

NewDecoderL

(

)

const [virtual]

Default version creates a basic CImageDecoder

NewPluginL()

CImageDecoderPlugin *

NewPluginL

(

)

const [pure virtual]

Creates a new concrete CImageDecoderPlugin object.

This is a pure virtual function that each derived class must implement.

RequestThread()

IMPORT_C TBool

RequestThread

(

)

const [virtual]

Requests a threaded decode.

The default version of the virtual function returns EFalse, that is, it does not request a threaded decode.

ReservedVirtual1()

IMPORT_C void

ReservedVirtual1

(

)

[private, virtual]

Intended for future proofing - will panic if called

panic: "EReservedCall"

ReservedVirtual2()

IMPORT_C void

ReservedVirtual2

(

)

[private, virtual]

Intended for future proofing - will panic if called

panic: "EReservedCall"

ReservedVirtual3()

IMPORT_C void

ReservedVirtual3

(

)

[private, virtual]

Intended for future proofing - will panic if called

panic: "EReservedCall"

ReservedVirtual4()

IMPORT_C void

ReservedVirtual4

(

)

[private, virtual]

Intended for future proofing - will panic if called

panic: "EReservedCall"

Member Data Documentation

TUid iDtorIDKey

TUid

iDtorIDKey

[private]

This member is internal and not intended for use.

TAny * iReserved

TAny *

iReserved

[private]

This member is internal and not intended for use.