imagehandlingutilities/thumbnailmanager/plugins/image/src/thumbnailimageprovider.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 19 Aug 2010 10:13:51 +0300
branchRCL_3
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permissions -rw-r--r--
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/*
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* Copyright (c) 2006-2007 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:  Image thumbnail provider plugin
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 *
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*/
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#include <ecom/ecom.h>
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#include <implementationproxy.h>
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#include "thumbnailimageprovider.h"
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#include "thumbnailimagedecoder.h"
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#include "thumbnailimagedecoderv2.h"
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#include "thumbnailmanageruids.hrh"
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#include "thumbnaillog.h"
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#include "thumbnailmanagerconstants.h"
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#ifndef IMPLEMENTATION_PROXY_ENTRY
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typedef TAny* TProxyNewLPtr;
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#define IMPLEMENTATION_PROXY_ENTRY(aUid, aFuncPtr) \
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{ {aUid}, static_cast<TProxyNewLPtr>(aFuncPtr) }
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#endif 
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// ======== MEMBER FUNCTIONS ========
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// ---------------------------------------------------------------------------
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// CThumbnailImageProvider::NewL()
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// Two-phased constructor.
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// ---------------------------------------------------------------------------
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//
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CThumbnailImageProvider* CThumbnailImageProvider::NewL()
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    {
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    CThumbnailImageProvider* self = new( ELeave )CThumbnailImageProvider();
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    return self;
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    }
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// ---------------------------------------------------------------------------
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// CThumbnailImageProvider::CThumbnailImageProvider()
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// C++ default constructor can NOT contain any code, that might leave.
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// ---------------------------------------------------------------------------
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//
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CThumbnailImageProvider::CThumbnailImageProvider()
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    {
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    TN_DEBUG1( "CThumbnailImageProvider::CThumbnailImageProvider()" );
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    }
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// ---------------------------------------------------------------------------
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// CThumbnailImageProvider::~CThumbnailImageProvider()
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// Destructor.
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// ---------------------------------------------------------------------------
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//
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CThumbnailImageProvider::~CThumbnailImageProvider()
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    {
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    TN_DEBUG1( "CThumbnailImageProvider::~CThumbnailImageProvider()" );
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    delete iImageDecoder;
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    iImageDecoder = NULL;
0
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    delete iImageDecoderv2;
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    iImageDecoderv2 = NULL;
0
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    REComSession::DestroyedImplementation( iDtor_ID_Key );
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    }
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// ---------------------------------------------------------------------------
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// CThumbnailImageProvider::GetThumbnailL()
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// Provides the thumbnail image
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// ---------------------------------------------------------------------------
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//
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void CThumbnailImageProvider::GetThumbnailL( RFs& aFs, RFile64& aFile, const
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    TDataType& aMimeType, const CThumbnailManager::TThumbnailFlags aFlags,
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    const TDisplayMode /*aDisplayMode*/, const CThumbnailManager::TThumbnailQualityPreference aQualityPreference )
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    {
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    TN_DEBUG1( "CThumbnailImageProvider::GetThumbnailL() start" );
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    if ( !iImageDecoder )
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        {
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        iImageDecoder = new( ELeave )CThumbnailImageDecoder( aFs );
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        }
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    iMimeType = aMimeType;
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    iFlags = aFlags;
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    iQualityPreference = aQualityPreference;
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	//set default mode displaymode from global constants
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    iDisplayMode = KStoreDisplayMode;
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    iImageDecoder->CreateL( aFile, *iObserver, iQualityPreference, iMimeType, iTargetSize );
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    iOriginalSize = iImageDecoder->OriginalSize();
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    iImageDecoder->DecodeL( iDisplayMode, iFlags );
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    TN_DEBUG1( "CThumbnailImageProvider::GetThumbnailL() end" );
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    }
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// ---------------------------------------------------------------------------
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// CThumbnailImageProvider::GetThumbnailL()
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// Provides the thumbnail image
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// ---------------------------------------------------------------------------
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//
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void CThumbnailImageProvider::GetThumbnailL( RFs& aFs, TDesC8* aBuffer, const
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    TDataType& aMimeType, const CThumbnailManager::TThumbnailFlags aFlags,
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    const TDisplayMode /*aDisplayMode*/, const CThumbnailManager::TThumbnailQualityPreference aQualityPreference )
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    {
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    TN_DEBUG1( "CThumbnailImageProvider::GetThumbnailL() start" );
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    if ( !iImageDecoder )
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        {
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        iImageDecoder = new( ELeave )CThumbnailImageDecoder( aFs );
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        }
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    iMimeType = aMimeType;
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    iFlags = aFlags;
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    iQualityPreference = aQualityPreference;
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	//set default mode displaymode from global constants
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    iDisplayMode = KStoreDisplayMode;
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    iImageDecoder->CreateL( aBuffer, *iObserver, iQualityPreference, iMimeType, iTargetSize );
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    iOriginalSize = iImageDecoder->OriginalSize();
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    iImageDecoder->DecodeL( iDisplayMode, iFlags );
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    TN_DEBUG1( "CThumbnailImageProvider::GetThumbnailL() end" );
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    }
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// ---------------------------------------------------------------------------
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// CThumbnailImageProvider::GetThumbnailL()
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// Provides the thumbnail image
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// ---------------------------------------------------------------------------
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//
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void CThumbnailImageProvider::GetThumbnailL( RFs& aFs, TDesC8& aBuffer)
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    {
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    TN_DEBUG1( "CThumbnailImageProvider::GetThumbnailL() start" );
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    if ( !iImageDecoderv2 )
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        {     
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        iImageDecoderv2 = new( ELeave )CThumbnailImageDecoderv2( aFs);
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        }
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    iImageDecoderv2->CreateL(aBuffer, *iObserver);
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    iImageDecoderv2->DecodeL();
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    TN_DEBUG1( "CThumbnailImageProvider::GetThumbnailL() end" );
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    }
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// ---------------------------------------------------------------------------
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// Cancel thumbnail request
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// ---------------------------------------------------------------------------
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//
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void CThumbnailImageProvider::CancelGetThumbnail()
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    {
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    if ( iImageDecoder )
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        {
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        iImageDecoder->Cancel();
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        }
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    if ( iImageDecoderv2)
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        {
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        iImageDecoderv2->Cancel();
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        }     
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    }
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// ======== GLOBAL FUNCTIONS ========
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// -----------------------------------------------------------------------------
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// ImplementationTable
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// Define the interface UIDs
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// -----------------------------------------------------------------------------
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//
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const TImplementationProxy ImplementationTable[] = 
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    {
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    IMPLEMENTATION_PROXY_ENTRY( THUMBNAIL_IMAGE_PROVIDER_IMP_UID,
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        CThumbnailImageProvider::NewL )
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};
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// -----------------------------------------------------------------------------
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// ImplementationGroupProxy
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// The one and only exported function that is the ECom entry point
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// -----------------------------------------------------------------------------
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//
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EXPORT_C const TImplementationProxy* ImplementationGroupProxy( TInt&
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    aTableCount )
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    {
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    aTableCount = sizeof( ImplementationTable ) / sizeof( TImplementationProxy );
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    return ImplementationTable;
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    }
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//End of file