/*

* Copyright (c) 2006-2007 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:  Audio thumbnail provider plugin

 *

*/

#include <ecom/ecom.h>

#include <implementationproxy.h>

#include "thumbnailaudioprovider.h"

#include "thumbnailimagedecoderv3.h"

#include "thumbnailmanageruids.hrh"

#include "thumbnaillog.h"

#include <MetaDataUtility.h>

#include <MetaDataFieldContainer.h>

#include "thumbnailmanagerconstants.h"

#ifndef IMPLEMENTATION_PROXY_ENTRY

typedef TAny* TProxyNewLPtr;

#define IMPLEMENTATION_PROXY_ENTRY(aUid, aFuncPtr) \

{ {aUid}, static_cast<TProxyNewLPtr>(aFuncPtr) }

#endif 

// ======== MEMBER FUNCTIONS ========

// ---------------------------------------------------------------------------

// CThumbnailImageProvider::NewL()

// Two-phased constructor.

// ---------------------------------------------------------------------------

//

CThumbnailAudioProvider* CThumbnailAudioProvider::NewL()

    {

    CThumbnailAudioProvider* self = new( ELeave )CThumbnailAudioProvider();

    return self;

    }

// ---------------------------------------------------------------------------

// CThumbnailAudioProvider::CThumbnailAudioProvider()

// C++ default constructor can NOT contain any code, that might leave.

// ---------------------------------------------------------------------------

//

CThumbnailAudioProvider::CThumbnailAudioProvider()

    {

    TN_DEBUG1( "CThumbnailAudioProvider::CThumbnailAudioProvider()" );

    }

// ---------------------------------------------------------------------------

// CThumbnailAudioProvider::~CThumbnailAudioProvider()

// Destructor.

// ---------------------------------------------------------------------------

//

CThumbnailAudioProvider::~CThumbnailAudioProvider()

    {

    TN_DEBUG1( "CThumbnailAudioProvider::~CThumbnailAudioProvider()" );

    delete iImageDecoderv3;

    REComSession::DestroyedImplementation( iDtor_ID_Key );

    }

// ---------------------------------------------------------------------------

// CThumbnailAudioProvider::GetThumbnailL()

// Provides the thumbnail image

// ---------------------------------------------------------------------------

//

void CThumbnailAudioProvider::GetThumbnailL( RFs& aFs, RFile64& aFile, const

    TDataType& aMimeType  , const CThumbnailManager::TThumbnailFlags aFlags,

    const TDisplayMode /*aDisplayMode*/, const CThumbnailManager::TThumbnailQualityPreference /*aQualityPreference*/  )

    {   

    TN_DEBUG1( "CThumbnailAudioProvider::GetThumbnailL() - rfile " );

    CMetaDataUtility* metaDataUtil = CMetaDataUtility::NewL();

    CleanupStack::PushL( metaDataUtil );

    RArray<TMetaDataFieldId> wantedFields;

    CleanupClosePushL(wantedFields);

    wantedFields.AppendL(EMetaDataJpeg);

    metaDataUtil->OpenFileL(aFile, wantedFields, aMimeType.Des8());

    const CMetaDataFieldContainer& metaCont = metaDataUtil->MetaDataFieldsL();

    TPtrC8 ptr = metaCont.Field8( EMetaDataJpeg );

    HBufC8* data = ptr.AllocL();

    CleanupStack::PopAndDestroy(&wantedFields);

    CleanupStack::PopAndDestroy(metaDataUtil);

    CleanupStack::PushL( data );

    if(data->Length() == 0)

      {

      User::Leave( KErrNotFound );            

      }

    if ( !iImageDecoderv3 )

        {

        iImageDecoderv3 = new( ELeave )CThumbnailImageDecoderv3( aFs );

        }

    iMimeType = TDataType(KJpegMime);

    iFlags = aFlags;

	//set default mode displaymode from global constants

    iDisplayMode = KStoreDisplayMode;

    TRAPD( err, iImageDecoderv3->CreateL( data, *iObserver, iFlags, iMimeType, iTargetSize ) );

    if (err == KErrNone)

        {

        CleanupStack::Pop( data );

        }

    else

        {

        // this is because data buffer is already released in CreateDecoderL

        // and we must prevent automatic PopAndDestroy

        CleanupStack::Pop( data );

        User::Leave(err);

        } 

    iOriginalSize = iImageDecoderv3->OriginalSize();

    iImageDecoderv3->DecodeL( iDisplayMode );

    }

// ---------------------------------------------------------------------------

// CThumbnailAudioProvider::GetThumbnailL()

// Provides the thumbnail image

// ---------------------------------------------------------------------------

//

void CThumbnailAudioProvider::GetThumbnailL( RFs& /* aFs */, TDesC8* /* aBuffer */, const

    TDataType& /*aMimeType */, const CThumbnailManager::TThumbnailFlags /* aFlags */,

    const TDisplayMode /* aDisplayMode */, const CThumbnailManager::TThumbnailQualityPreference /*aQualityPreference*/ )

    {

    TN_DEBUG1( "CThumbnailAudioProvider::GetThumbnailL() - buffer" );

	__ASSERT_DEBUG((EFalse), User::Panic(_L("CThumbnailAudioProvider::GetThumbnailL"), KErrNotSupported));

    }

// ---------------------------------------------------------------------------

// CThumbnailAudioProvider::GetThumbnailL()

// Provides the thumbnail image

// ---------------------------------------------------------------------------

//

void CThumbnailAudioProvider::GetThumbnailL( RFs& /* aFs */, TDesC8& /*aBuffer */)

    {

    TN_DEBUG1( "CThumbnailAudioProvider::GetThumbnailL() - buffer no mime" );

	__ASSERT_DEBUG((EFalse), User::Panic(_L("CThumbnailAudioProvider::GetThumbnailL"), KErrNotSupported));

    }

// ---------------------------------------------------------------------------

// Cancel thumbnail request

// ---------------------------------------------------------------------------

//

void CThumbnailAudioProvider::CancelGetThumbnail()

    {

    if ( iImageDecoderv3)

        {

        iImageDecoderv3->Cancel();

        }

    }

// ======== GLOBAL FUNCTIONS ========

// -----------------------------------------------------------------------------

// ImplementationTable

// Define the interface UIDs

// -----------------------------------------------------------------------------

//

const TImplementationProxy ImplementationTable[] = 

    {

    IMPLEMENTATION_PROXY_ENTRY( THUMBNAIL_AUDIO_PROVIDER_IMP_UID,

        CThumbnailAudioProvider::NewL )

};

// -----------------------------------------------------------------------------

// ImplementationGroupProxy

// The one and only exported function that is the ECom entry point

// -----------------------------------------------------------------------------

//

EXPORT_C const TImplementationProxy* ImplementationGroupProxy( TInt&

    aTableCount )

    {

    aTableCount = sizeof( ImplementationTable ) / sizeof( TImplementationProxy );

    return ImplementationTable;

    }

//End of file