examples/Multimedia/ICL/ICLCodec/PNGProxy.cpp

/*
Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.

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  list of conditions and the following disclaimer.
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  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
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  may be used to endorse or promote products derived from this software
  without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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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