examples/Multimedia/ICL/ICLCodec/PNGProxy.cpp

// PNGProxy.cpp
//
// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of "Eclipse Public License v1.0"
// which accompanies this distribution, and is available
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
//
// Initial Contributors:
// Nokia Corporation - initial contribution.
//
// Contributors:
//
// Description:
//
//

// Supplies the factory function called by ECom, and factories for
// the PNG decoder and encoder

// Ecom headers
#include <ecom.h>
#include <implementationproxy.h>

// ICL base class
#include <icl/imageconstruct.h>

#include "uids.h"
#include "PNGCodec.h"


//
// Factory for PNG decoder
//
class CPngDecodeConstruct : public CImageDecodeConstruct
        {
public:
        // Constructs the factory
        static CPngDecodeConstruct* NewL();

        // Supplies a new decoder
        // from CImageDecodeConstruct
        CImageDecoderPlugin* NewPluginL() const;
        };

CPngDecodeConstruct* CPngDecodeConstruct::NewL()
        {
        CPngDecodeConstruct* self = new (ELeave) CPngDecodeConstruct;
        return self;
        }

CImageDecoderPlugin* CPngDecodeConstruct::NewPluginL() const
        {
        return CPngDecoder::NewL();
        }


//
// Factory for PNG encoder
//
class CPngEncodeConstruct : public CImageEncodeConstruct
        {
public:
        // Constructs the factory
        static CPngEncodeConstruct* NewL();

        // Supplies a new encoder
        // from CImageEncodeConstruct
        CImageEncoderPlugin* NewPluginL() const;
        };

CPngEncodeConstruct* CPngEncodeConstruct::NewL()
        {
        CPngEncodeConstruct* self = new (ELeave) CPngEncodeConstruct;
        return self;
        }

CImageEncoderPlugin* CPngEncodeConstruct::NewPluginL() const
        {
        return CPngEncoder::NewL();
        }



//
// Exported proxy for ECom instantiation method resolution
//

// Define the factories for the PNG converters
const TImplementationProxy ImplementationTable[] =
        {
                IMPLEMENTATION_PROXY_ENTRY(KExPNGDecoderImplementationUidValue, CPngDecodeConstruct::NewL),
                IMPLEMENTATION_PROXY_ENTRY(KExPNGEncoderImplementationUidValue, CPngEncodeConstruct::NewL)
        };

EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)
        {
        aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);
        return ImplementationTable;
        }

//
// Global panic function
//
GLDEF_C void Panic(TInt aError)
        {
        _LIT(KPNGPanicCategory, "PNGExConvertPlugin");
        User::Panic(KPNGPanicCategory, aError);
        }

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