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// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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/**
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@publishedPartner
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@prototype
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*/
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#ifndef IMPLEMENTATIONFACTORYINTF_H
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#define IMPLEMENTATIONFACTORYINTF_H
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/**
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Union used to provide future flexibility if extra details are needed by the abstract factory methods.
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@publishedPartner
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@prototype
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*/
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union TECamImplFactoryParam
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{
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public:
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/** explicit constructor when the union is used to represent a TAny* parameter */
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explicit TECamImplFactoryParam(TAny* aPtrParam);
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/** explicit constructor when the union is used to represent a TInt parameter */
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explicit TECamImplFactoryParam(TInt aIntParam);
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/** explicit constructor when the union is used to represent a TUint parameter */
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explicit TECamImplFactoryParam(TUint aUintParam);
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public:
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/** union may represent a TAny* parameter in order to provide extra information for creating concrete implementation. */
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TAny* iPtrParam;
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/** union may represent a TInt parameter in order to provide extra information for creating concrete implementation. */
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TInt iIntParam;
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/** union may represent a TUint parameter in order to provide extra information for creating concrete implementation. */
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TUint iUintParam;
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};
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/**
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Abstract Factory Class in order to derive different concrete factory class for image processing implementation specific to
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VideoCapture and specific Viewfinder.
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Also used to derive concrete factory class for snapshot implementation specific to image capture and video capture.
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Also used to derive concrete factory class for histogram implementation specific to still image, video, snapshot or specific viewfinder.
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This may be used in other possible cases as well.
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@publishedPartner
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@prototype
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*/
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class MImplementationFactory
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{
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public:
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/**
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Releases the interface.
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*/
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virtual void Release() =0;
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/**
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Provides implementation handle for different implementation products.
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@param aIfPtr
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Retrieves pointer to specifc interface implementation as identified by the interface uid.
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@param aIfaceUid
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The interface uid.
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@return any defined error code.
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@note KErrNone should be returned only when a valid interface pointer is there. Any other error code implies that
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interface implementation pointer is NULL.
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@note KErrNotSupported should be returned when the concrete interface implementation is not present.
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@note The inferface pointer is retrieved only on the basis of interface uid passed.
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Examples of 'interface implementation pointer' - 'interface uid' are as follows:-
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MCameraImageProcessing* - KECamMCameraImageProcessingUid;
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MCameraImageProcessing2* - KECamMCameraImageProcessing2Uid;
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MCameraImageProcessing3* - KECamMCameraImageProcessing3Uid;
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MCameraSnapshot* - KECamMCameraSnapshotUid;
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MCameraSnapshot2* - KECamMCameraSnapshot2Uid;
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MCameraV2Histogram* - KECamMCameraV2HistogramUid;
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Many other pairs may be possible in future. For example when image processing API/ camera snapshot API/
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histogram API is further extended.
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Or when same concept is being used on other ECam related sub-component.
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*/
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virtual TInt GetImpl(TAny*& aIfPtr, TUid aIfaceUid) const=0;
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/**
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Overloaded method which helps in retrieving the appropriate implementation pointer
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based on extra information provided through a single 'TECamImplFactoryParam'.
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Provides implementation handle for different implementation products.
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@param aIfPtr
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Retrieves pointer to specifc interface implementation as identified by the interface uid.
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@param aIfaceUid
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The interface uid.
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@param aParam1
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union used to provide extra information which could a TAny*, TInt or TUint.
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@return error code
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@note The inferface pointer is retrieved only on the basis of interface uid passed.
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Examples of 'interface implementation pointer' - 'interface uid' are as follows:-
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MCameraImageProcessing* - KECamMCameraImageProcessingUid;
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MCameraImageProcessing2* - KECamMCameraImageProcessing2Uid;
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MCameraImageProcessing3* - KECamMCameraImageProcessing3Uid;
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MCameraSnapshot* - KECamMCameraSnapshotUid;
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MCameraSnapshot2* - KECamMCameraSnapshot2Uid;
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MCameraV2Histogram* - KECamMCameraV2HistogramUid;
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Many other pairs may be possible in future. For example when image processing API/ camera snapshot API/
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histogram API is further extended.
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Or when same concept is being used on other ECam related sub-component.
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*/
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virtual TInt GetImpl1(TAny*& aIfPtr, TUid aIfaceUid, TECamImplFactoryParam aParam1) const=0;
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/**
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Overloaded method which helps in retrieving the appropriate implementation pointer
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based on extra information provided through two different 'TECamImplFactoryParam'.
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Provides implementation handle for different implementation products.
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@param aIfPtr
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Retrieves pointer to specifc interface implementation as identified by the interface uid.
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@param aIfaceUid
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The interface uid.
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@param aParam1
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union used to provide extra information which could a TAny*, TInt or TUint.
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@param aParam2
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union used to provide extra information which could a TAny*, TInt or TUint.
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@return error code
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@note The inferface pointer is retrieved only on the basis of interface uid passed.
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Examples of 'interface implementation pointer' - 'interface uid' are as follows:-
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MCameraImageProcessing* - KECamMCameraImageProcessingUid;
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MCameraImageProcessing2* - KECamMCameraImageProcessing2Uid;
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MCameraImageProcessing3* - KECamMCameraImageProcessing3Uid;
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MCameraSnapshot* - KECamMCameraSnapshotUid;
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MCameraSnapshot2* - KECamMCameraSnapshot2Uid;
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MCameraV2Histogram* - KECamMCameraV2HistogramUid;
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Many other pairs may be possible in future. For example when image processing API/ camera snapshot API/
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histogram API is further extended.
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Or when same concept is being used on other ECam related sub-component.
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*/
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virtual TInt GetImpl2(TAny*& aIfPtr, TUid aIfaceUid, TECamImplFactoryParam aParam1, TECamImplFactoryParam aParam2) const=0;
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};
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inline
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TECamImplFactoryParam::TECamImplFactoryParam(TAny* aPtrParam):iPtrParam(aPtrParam)
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{
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}
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inline
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TECamImplFactoryParam::TECamImplFactoryParam(TInt aIntParam):iIntParam(aIntParam)
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{
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}
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inline
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TECamImplFactoryParam::TECamImplFactoryParam(TUint aUintParam):iUintParam(aUintParam)
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{
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}
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#endif // IMPLEMENTATIONFACTORYINTF_H
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