williamr@2: 
williamr@2: // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
williamr@2: // All rights reserved.
williamr@2: // This component and the accompanying materials are made available
williamr@4: // under the terms of "Eclipse Public License v1.0"
williamr@2: // which accompanies this distribution, and is available
williamr@4: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
williamr@2: //
williamr@2: // Initial Contributors:
williamr@2: // Nokia Corporation - initial contribution.
williamr@2: //
williamr@2: // Contributors:
williamr@2: //
williamr@2: // Description:
williamr@2: // ImageConstruct.h - classes used during construction of decoders/encoders
williamr@2: // 
williamr@2: //
williamr@2: 
williamr@2: #ifndef __ImageConstruct_h
williamr@2: #define __ImageConstruct_h
williamr@2: 
williamr@2: #include <e32base.h>
williamr@2: 
williamr@2: // forward declarations
williamr@2: class CImageDecoder;
williamr@2: class CImageDecoderPlugin;
williamr@2: class CImageEncoder;
williamr@2: class CImageEncoderPlugin;
williamr@2: class RCImageDecodeConstructTest;
williamr@2: class RCImageEncodeConstructTest;
williamr@2: 
williamr@2: /**
williamr@2: @publishedAll
williamr@2: @released
williamr@2: 
williamr@2: Provides functions related to constructing decoders.
williamr@2: 
williamr@2: Objects of this class are loaded by ECOM, and it is this class which
williamr@2: is responsible for instantiating the decoder plugins. Plugin writers
williamr@2: must derive their own plugin specific variants. The derived class
williamr@2: is responsible for defining its own factory function to create instances
williamr@2: of itself.
williamr@2: */
williamr@2: 
williamr@2: class CImageDecodeConstruct : public CBase
williamr@2: 	{
williamr@2: 	friend class CImageDecoder;
williamr@2: public:
williamr@2: 	IMPORT_C ~CImageDecodeConstruct();
williamr@2: 
williamr@2: 	IMPORT_C TUid ImplementationUid() const;
williamr@2: 	// create new CImageDecoder - default creates basic CImageDecoder
williamr@2: 	IMPORT_C virtual CImageDecoder* NewDecoderL() const;
williamr@2: 
williamr@2: 	/**
williamr@2: 	Creates a new concrete CImageDecoderPlugin object.
williamr@2: 
williamr@2: 	This is a pure virtual function that each derived class must implement.
williamr@2: 
williamr@2: 	@return A pointer to a fully constructed CImageDecoderPlugin.
williamr@2: 	*/
williamr@2: 	virtual CImageDecoderPlugin* NewPluginL() const = 0;
williamr@2: 
williamr@2: 	// request threaded decode - default false
williamr@2: 	IMPORT_C virtual TBool RequestThread() const;
williamr@2: protected:
williamr@2: 	IMPORT_C CImageDecodeConstruct();
williamr@2: 	IMPORT_C void ConstructL();
williamr@2: 
williamr@2: private:
williamr@2: 	IMPORT_C virtual void ReservedVirtual1();
williamr@2: 	IMPORT_C virtual void ReservedVirtual2();
williamr@2: 	IMPORT_C virtual void ReservedVirtual3();
williamr@2: 	IMPORT_C virtual void ReservedVirtual4();
williamr@2: private:
williamr@2: 	/**
williamr@2: 	This member is internal and not intended for use.
williamr@2: 	*/
williamr@2: 	TUid iDtorIDKey;
williamr@2: 
williamr@2: 	/**
williamr@2: 	This member is internal and not intended for use.
williamr@2: 	*/
williamr@2: 	TAny* iReserved;
williamr@2: 
williamr@2: friend class RCImageDecodeConstructTest;
williamr@2: 	};
williamr@2: 
williamr@2: /**
williamr@2: @publishedAll
williamr@2: @released
williamr@2: 
williamr@2: Provides functions related to constructing encoders.
williamr@2: 
williamr@2: Objects of this class are loaded by ECOM, and it is this class which
williamr@2: is responsible for instantiating the encoder plugins. Plugin writers
williamr@2: must derive their own plugin specific variants. The derived class
williamr@2: is responsible for defining its own factory function to create instances
williamr@2: of itself.
williamr@2: */
williamr@2: class CImageEncodeConstruct : public CBase
williamr@2: 	{
williamr@2: 	friend class CImageEncoder;
williamr@2: public:
williamr@2: 	IMPORT_C ~CImageEncodeConstruct();
williamr@2: 
williamr@2: 	IMPORT_C TUid ImplementationUid() const;
williamr@2: 	// create new CImageEncoder - default creates basic CImageEncoder
williamr@2: 	IMPORT_C virtual CImageEncoder* NewEncoderL() const;
williamr@2: 
williamr@2: 	/**
williamr@2: 	Creates new concrete CImageEncoderPlugin object.
williamr@2: 
williamr@2: 	This is a virtual function that each derived class must implement.
williamr@2: 
williamr@2: 	@return A pointer to fully constructed CImageEncoderPlugin.
williamr@2: 	*/
williamr@2: 	virtual CImageEncoderPlugin* NewPluginL() const = 0;
williamr@2: 
williamr@2: 	// request threaded encode - default false
williamr@2: 	IMPORT_C virtual TBool RequestThread() const;
williamr@2: protected:
williamr@2: 	IMPORT_C CImageEncodeConstruct();
williamr@2: 	IMPORT_C void ConstructL();
williamr@2: 
williamr@2: private:
williamr@2: 	IMPORT_C virtual void ReservedVirtual1();
williamr@2: 	IMPORT_C virtual void ReservedVirtual2();
williamr@2: 	IMPORT_C virtual void ReservedVirtual3();
williamr@2: 	IMPORT_C virtual void ReservedVirtual4();
williamr@2: private:
williamr@2: 	TUid iDtorIDKey;
williamr@2: 	TAny* iReserved;
williamr@2: friend class RCImageEncodeConstructTest;
williamr@2: 	};
williamr@2: 
williamr@2: #endif //__ImageConstruct_h