mpxmusicplayer/commonui/src/mpxalbumartutil.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 18 Jan 2010 20:18:06 +0200
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Revision: 201001 Kit: 201003
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/*
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* Copyright (c) 2006 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:  MPX album utility API
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*
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*/
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#include <e32std.h>
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#include <MetaDataUtility.h>
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#include <MetaDataFieldContainer.h>
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#include <mpxuser.h>
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#include <mpxmedia.h>
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#include <mpxmediamusicdefs.h>
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#include <mpxmediageneraldefs.h>
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#include <mpxlog.h>
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#include "mpxalbumartutilobserver.h"
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#include "mpximageutil.h"
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#include "mpxalbumartutil.h"
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#include <thumbnaildata.h>
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#include <thumbnailobjectsource.h>
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#include <centralrepository.h>
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#define THUMBNAIL_CENREP_UID 0x102830B0
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const TUint32 KSizeAudioGridWidth = 0x12;
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const TUint32 KSizeAudioGridHeight = 0x13;
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const TUint32 KSizeAudioFullscreenWidth = 0x16;
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const TUint32 KSizeAudioFullscreenHeight = 0x17;
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_LIT( KMPXAlbumMimeType, "audio/mpeg3" );
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// ============================== MEMBER FUNCTIONS ============================
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// ----------------------------------------------------------------------------
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// Create the playback utility object
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// ----------------------------------------------------------------------------
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//
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EXPORT_C CMPXAlbumArtUtil* CMPXAlbumArtUtil::NewL()
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    {
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    CMPXAlbumArtUtil* self = new(ELeave)CMPXAlbumArtUtil();
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    CleanupStack::PushL(self);
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    self->ConstructL();
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    CleanupStack::Pop(self);
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    return self;
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    }
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// ----------------------------------------------------------------------------
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// Destructor
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// ----------------------------------------------------------------------------
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//
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EXPORT_C CMPXAlbumArtUtil::~CMPXAlbumArtUtil()
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    {
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    if (iArtUtil)
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        {
2
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		iArtUtil->CancelRequest();
0
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        delete iArtUtil;
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        }
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    if(iFilename)
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        {   
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        delete iFilename;
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        iFilename = NULL;
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        }
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    delete iThumbnailManager;
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    }
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// ----------------------------------------------------------------------------
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// Constructor
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// ----------------------------------------------------------------------------
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//
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CMPXAlbumArtUtil::CMPXAlbumArtUtil()
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    {
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    }
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// ----------------------------------------------------------------------------
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// Constructor
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// ----------------------------------------------------------------------------
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//
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void CMPXAlbumArtUtil::ConstructL()
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    {
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     MPX_FUNC("CMPXAlbumArtUtil::ConstructL()");
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     iThumbnailManager = CThumbnailManager::NewL( *this );
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     iThumbnailManager->SetFlagsL( CThumbnailManager::EDefaultFlags );
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     iThumbnailManager->SetQualityPreferenceL( CThumbnailManager::EOptimizeForPerformance );
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	 //cenrep
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     CRepository* repository;
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     repository = CRepository::NewL( TUid::Uid(THUMBNAIL_CENREP_UID));
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     TInt xSize( 0 );
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     TInt ySize( 0 );
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     User::LeaveIfError( repository->Get( KSizeAudioGridWidth, xSize ));
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     User::LeaveIfError( repository->Get( KSizeAudioGridHeight, ySize ));
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     iGridViewImageSize.SetSize(xSize,ySize);
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     User::LeaveIfError( repository->Get( KSizeAudioFullscreenWidth, xSize ));
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     User::LeaveIfError( repository->Get( KSizeAudioFullscreenHeight, ySize ));
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     iFullScreenImageSize.SetSize(xSize,ySize);
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     delete repository;
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     repository = NULL;
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    }
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// ----------------------------------------------------------------------------
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// Create the playback utility object
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// ----------------------------------------------------------------------------
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//
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EXPORT_C void CMPXAlbumArtUtil::ExtractAlbumArtL(const CMPXMedia& aMedia,
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                                            MMPXAlbumArtUtilObserver& aObs,
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                                            const TSize& aSize,
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                                            TDisplayMode aDisplayMode /*= EColor64K*/)
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    {
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    MPX_DEBUG1("CMPXAlbumArtUtil::ExtractAlbumArtL(): Entering");
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    MPX_DEBUG_THREAD("CMPXAlbumArtUtil::ExtractAlbumArtL()");
2
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    if(iFilename)
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        {  
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        delete iFilename;
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        iFilename = NULL;
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        } 
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    if ( iArtUtil )
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        {
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        delete iArtUtil;
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        iArtUtil = NULL;
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        }
0
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    iArtUtil = CMPXImageUtil::NewL(aObs);
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    iDisplayMode = aDisplayMode;
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    iImageSize = aSize;
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    iObserver = &aObs;
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    if (aMedia.IsSupported( KMPXMediaMusicAlbumArtFileName ))
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        {
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        if ( aMedia.ValueText( KMPXMediaMusicAlbumArtFileName ).Length() == 0)
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            {
2
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            iReqId = 0;  
0
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            User::Leave( KErrNotFound );
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            }
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        }
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    if ( aMedia.IsSupported( KMPXMediaGeneralUri ) &&
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         aMedia.IsSupported( KMPXMediaMusicAlbumArtFileName ))
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        {
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        iFilename = aMedia.ValueText( KMPXMediaMusicAlbumArtFileName ).AllocL();
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        if(aSize == iFullScreenImageSize)
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            {
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            iThumbnailManager->SetThumbnailSizeL(EAudioFullScreenThumbnailSize);
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            }
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        else if(aSize == iGridViewImageSize)
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            { 
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            iThumbnailManager->SetThumbnailSizeL(EAudioGridThumbnailSize);
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            } 
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        else
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            {
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            iThumbnailManager->SetThumbnailSizeL(aSize);
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            }
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        ExtractThumbnailL(&aMedia);
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        }
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    else
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        {
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        User::Leave( KErrNotFound );
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        }
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    MPX_DEBUG1("CMPXAlbumArtUtil::ExtractAlbumArtL(): Exiting");
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    }
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// -----------------------------------------------------------------------------
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// Cancel Asynch requests
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// -----------------------------------------------------------------------------
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//
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EXPORT_C void CMPXAlbumArtUtil::CancelRequest()
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    {
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    MPX_DEBUG1("CMPXAlbumArtUtil::CancelRequest(): Entering");
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    if ( iArtUtil )
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        {
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        iArtUtil->CancelRequest();
2
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        delete iArtUtil;
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        iArtUtil = 0;
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        }
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	if ( iThumbnailManager && iReqId > 0 )
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        {
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         iThumbnailManager->CancelRequest(iReqId);
0
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        }
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    iReqId = 0;
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    MPX_DEBUG1("CMPXAlbumArtUtil::CancelRequest(): Exiting");
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    }
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// ----------------------------------------------------------------------------
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// Extract binary data from file
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// ----------------------------------------------------------------------------
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//
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HBufC8* CMPXAlbumArtUtil::ExtractBinaryMetaDataLC(const TDesC& aFilename,
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                                             TMetaDataFieldId aFieldId)
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    {
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    MPX_DEBUG1("CMPXAlbumArtUtil::ExtractBinaryMetaDataLC(): Entering");
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    HBufC8* ret(NULL);
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   204
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    if (EUnknownMetaDataField != aFieldId)
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        {
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        CMetaDataUtility* metaDataUtil = CMetaDataUtility::NewL();
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        CleanupStack::PushL( metaDataUtil );
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   209
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        RArray<TMetaDataFieldId> wantedFields;
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        CleanupClosePushL(wantedFields);
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        wantedFields.AppendL(aFieldId);
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   213
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        metaDataUtil->OpenFileL(aFilename, wantedFields);
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        const CMetaDataFieldContainer& metaCont =
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                                        metaDataUtil->MetaDataFieldsL();
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        TPtrC data = metaCont.Field( aFieldId );
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        if(data.Length()==0)
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   219
            {
2
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            User::Leave( KErrNotFound );          
0
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   221
            }
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        ret = MPXUser::Alloc8L(data);
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   223
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        CleanupStack::PopAndDestroy(&wantedFields);
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        CleanupStack::PopAndDestroy(metaDataUtil);
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        CleanupStack::PushL( ret );
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   227
        }
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    else
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        {
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        ret = HBufC8::NewLC(0);
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        }
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   232
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    MPX_DEBUG1("CMPXAlbumArtUtil::ExtractBinaryMetaDataLC(): Exiting");
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    return ret;
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    }
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// -----------------------------------------------------------------------------
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// Preview thumbnail generation or loading is complete.
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// -----------------------------------------------------------------------------
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//
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void CMPXAlbumArtUtil::ThumbnailPreviewReady(
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    MThumbnailData& /*aThumbnail*/,
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    TThumbnailRequestId /*aId*/ )
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    {
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    MPX_FUNC( "CMPXAlbumArtUtil::ThumbnailPreviewReady" );
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    // Not used
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    }
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// -----------------------------------------------------------------------------
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// Final thumbnail bitmap generation or loading is complete. 
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// -----------------------------------------------------------------------------
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//
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void CMPXAlbumArtUtil::ThumbnailReady(
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        TInt aError, MThumbnailData& aThumbnail,
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        TThumbnailRequestId aId )
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    {
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    MPX_DEBUG2( "CMPXAlbumArtUtil::ThumbnailReady error = %d", aError);
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    if (aError == KErrNone)
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        { 
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        CFbsBitmap* tempBitmap;
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        tempBitmap = aThumbnail.DetachBitmap();                
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        if (tempBitmap)
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            {
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            if(iReqId == aId)
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                {
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                iObserver->ExtractAlbumArtCompleted( tempBitmap, KErrNone ); 
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                }
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            else
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                {
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                delete tempBitmap;
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                } 
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            }
2
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        else if(iReqId == aId)
0
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            {
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            iObserver->ExtractAlbumArtCompleted( NULL, KErrNotFound );
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            }
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        } 	
2
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    else if (iArtUtil && iFilename)
0
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        {
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        TRAPD( err,
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            HBufC8* art( ExtractBinaryMetaDataLC(iFilename->Des(),EMetaDataJpeg ));
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            CleanupStack::Pop(art);
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            iArtUtil->StartToDecodeL(iImageSize, art, iDisplayMode) );
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        if (err != KErrNone)
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   288
            {
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            iObserver->ExtractAlbumArtCompleted( NULL, KErrNotFound );
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            }  
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   291
        } 
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   292
2
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   293
    iReqId = 0;
0
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   294
    }
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   295
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// -----------------------------------------------------------------------------
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//     Extract Thumbnail for the current song
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// -----------------------------------------------------------------------------
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//    	
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void CMPXAlbumArtUtil::ExtractThumbnailL(
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        const CMPXMedia* aMedia)
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   302
    {
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   303
    MPX_FUNC("CMPXAlbumArtUtil::ExtractThumbnailL");
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   304
    
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   305
    TMPXItemId currentId( aMedia->ValueTObjectL<TMPXItemId>( KMPXMediaGeneralId ) );
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   306
    if (currentId == KMPXInvalidItemId )
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   307
        {
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   308
        User::Leave( KErrNotFound );
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   309
        }
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   310
    if (aMedia->IsSupported( KMPXMediaMusicAlbumArtFileName ) )
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   311
        {
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        const TDesC& album = aMedia->ValueText( KMPXMediaMusicAlbumArtFileName );
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   313
#ifdef _DEBUG
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        RDebug::RawPrint(album);
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   315
#endif
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   316
        if (album.Compare( KNullDesC) != 0 )
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   317
            {
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   318
            CThumbnailObjectSource* source = CThumbnailObjectSource::NewLC( album, KMPXAlbumMimeType );
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   319
            TInt ret = NULL;
2
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diff changeset
   320
            if(iThumbnailManager && iReqId >0)
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diff changeset
   321
                {
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diff changeset
   322
                iThumbnailManager->CancelRequest( iReqId );
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diff changeset
   323
                }   
0
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diff changeset
   324
            TRAPD(err, iReqId = TInt (iThumbnailManager->GetThumbnailL( *source, (TAny*)ret)));
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   325
            if( err != KErrNone)
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parents:
diff changeset
   326
                {
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   327
                User::Leave( KErrNotFound );
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diff changeset
   328
                }  
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   329
            CleanupStack::PopAndDestroy( source );
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   330
            }
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   331
        }
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   332
    }
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parents:
diff changeset
   333