/*

* Copyright (c) 2006 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:  MPX album utility API

*

*/

#include <e32std.h>

#include <MetaDataUtility.h>

#include <MetaDataFieldContainer.h>

#include <mpxuser.h>

#include <mpxmedia.h>

#include <mpxmediamusicdefs.h>

#include <mpxmediageneraldefs.h>

#include <mpxlog.h>

#include "mpxalbumartutilobserver.h"

#include "mpximageutil.h"

#include "mpxalbumartutil.h"

#include <thumbnaildata.h>

#include <thumbnailobjectsource.h>

_LIT( KMPXAlbumMimeType, "audio/mpeg3" );

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

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

// Create the playback utility object

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

//

EXPORT_C CMPXAlbumArtUtil* CMPXAlbumArtUtil::NewL()

    {

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

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

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

// Destructor

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

//

EXPORT_C CMPXAlbumArtUtil::~CMPXAlbumArtUtil()

    {

    if (iArtUtil)

        {

		iArtUtil->CancelRequest();

        delete iArtUtil;

        }

    if(iFilename)

        {   

        delete iFilename;

        iFilename = NULL;

        }

    delete iThumbnailManager;

    }

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

// Constructor

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

//

CMPXAlbumArtUtil::CMPXAlbumArtUtil()

    {

    }

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

// Constructor

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

//

void CMPXAlbumArtUtil::ConstructL()

    {

	MPX_FUNC("CMPXAlbumArtUtil::ConstructL()");

	iThumbnailManager = CThumbnailManager::NewL( *this );

	iThumbnailManager->SetFlagsL( CThumbnailManager::EDefaultFlags );

	iThumbnailManager->SetQualityPreferenceL( CThumbnailManager::EOptimizeForPerformance );

    }

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

// Create the playback utility object

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

//

EXPORT_C void CMPXAlbumArtUtil::ExtractAlbumArtL(const CMPXMedia& aMedia,

                                            MMPXAlbumArtUtilObserver& aObs,

                                            const TSize& aSize,

                                            TBool aLargestFromCache,

                                            TDisplayMode aDisplayMode /*= EColor64K*/)

    {

    MPX_DEBUG1("CMPXAlbumArtUtil::ExtractAlbumArtL(): Entering");

    MPX_DEBUG_THREAD("CMPXAlbumArtUtil::ExtractAlbumArtL()");

    if(iFilename)

        {  

        delete iFilename;

        iFilename = NULL;

        } 

    if ( iArtUtil )

        {

        delete iArtUtil;

        iArtUtil = NULL;

        }

    iArtUtil = CMPXImageUtil::NewL(aObs);

    iDisplayMode = aDisplayMode;

    iImageSize = aSize;

    iObserver = &aObs;

    if (aMedia.IsSupported( KMPXMediaMusicAlbumArtFileName ))

        {

        if ( aMedia.ValueText( KMPXMediaMusicAlbumArtFileName ).Length() == 0)

            {

            iReqId = 0;  

            User::Leave( KErrNotFound );

            }

        }

    if ( aMedia.IsSupported( KMPXMediaGeneralUri ) &&

         aMedia.IsSupported( KMPXMediaMusicAlbumArtFileName ))

        {

        iFilename = aMedia.ValueText( KMPXMediaMusicAlbumArtFileName ).AllocL();

        if ( aLargestFromCache )

			{

            iThumbnailManager->SetThumbnailSizeL(EAudioFullScreenThumbnailSize);

			}

		else

			{

            iThumbnailManager->SetThumbnailSizeL(aSize);

			}

        ExtractThumbnailL(&aMedia);

        }

    else

        {

        User::Leave( KErrNotFound );

        }

    MPX_DEBUG1("CMPXAlbumArtUtil::ExtractAlbumArtL(): Exiting");

    }

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

// Cancel Asynch requests

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

//

EXPORT_C void CMPXAlbumArtUtil::CancelRequest()

    {

    MPX_DEBUG1("CMPXAlbumArtUtil::CancelRequest(): Entering");

    if ( iArtUtil )

        {

        iArtUtil->CancelRequest();

        delete iArtUtil;

        iArtUtil = 0;

        }

	if ( iThumbnailManager && iReqId > 0 )

        {

         iThumbnailManager->CancelRequest(iReqId);

        }

    iReqId = 0;

    MPX_DEBUG1("CMPXAlbumArtUtil::CancelRequest(): Exiting");

    }

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

// Extract binary data from file

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

//

HBufC8* CMPXAlbumArtUtil::ExtractBinaryMetaDataLC(const TDesC& aFilename,

                                             TMetaDataFieldId aFieldId)

    {

    MPX_DEBUG1("CMPXAlbumArtUtil::ExtractBinaryMetaDataLC(): Entering");

    HBufC8* ret(NULL);

    if (EUnknownMetaDataField != aFieldId)

        {

        CMetaDataUtility* metaDataUtil = CMetaDataUtility::NewL();

        CleanupStack::PushL( metaDataUtil );

        RArray<TMetaDataFieldId> wantedFields;

        CleanupClosePushL(wantedFields);

        wantedFields.AppendL(aFieldId);

        metaDataUtil->OpenFileL(aFilename, wantedFields);

        const CMetaDataFieldContainer& metaCont =

                                        metaDataUtil->MetaDataFieldsL();

        TPtrC data = metaCont.Field( aFieldId );

        if(data.Length()==0)

            {

            User::Leave( KErrNotFound );          

            }

        ret = MPXUser::Alloc8L(data);

        CleanupStack::PopAndDestroy(&wantedFields);

        CleanupStack::PopAndDestroy(metaDataUtil);

        CleanupStack::PushL( ret );

        }

    else

        {

        ret = HBufC8::NewLC(0);

        }

    MPX_DEBUG1("CMPXAlbumArtUtil::ExtractBinaryMetaDataLC(): Exiting");

    return ret;

    }

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

// Preview thumbnail generation or loading is complete.

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

//

void CMPXAlbumArtUtil::ThumbnailPreviewReady(

    MThumbnailData& /*aThumbnail*/,

    TThumbnailRequestId /*aId*/ )

    {

    MPX_FUNC( "CMPXAlbumArtUtil::ThumbnailPreviewReady" );

    // Not used

    }

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

// Final thumbnail bitmap generation or loading is complete. 

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

//

void CMPXAlbumArtUtil::ThumbnailReady(

        TInt aError, MThumbnailData& aThumbnail,

        TThumbnailRequestId aId )

    {

    MPX_DEBUG2( "CMPXAlbumArtUtil::ThumbnailReady error = %d", aError);

    if (aError == KErrNone)

        { 

        CFbsBitmap* tempBitmap;

        tempBitmap = aThumbnail.DetachBitmap();                

        if (tempBitmap)

            {

            if(iReqId == aId)

                {

                iObserver->ExtractAlbumArtCompleted( tempBitmap, KErrNone ); 

                }

            else

                {

                delete tempBitmap;

                } 

            }

        else if(iReqId == aId)

            {

            iObserver->ExtractAlbumArtCompleted( NULL, KErrNotFound );

            }

        } 	

    else if (iArtUtil && iFilename)

        {

        TRAPD( err,

            HBufC8* art( ExtractBinaryMetaDataLC(iFilename->Des(),EMetaDataJpeg ));

            CleanupStack::Pop(art);

            iArtUtil->StartToDecodeL(iImageSize, art, iDisplayMode) );

        if (err != KErrNone)

            {

            iObserver->ExtractAlbumArtCompleted( NULL, KErrNotFound );

            }  

        } 

    iReqId = 0;

    }

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

//     Extract Thumbnail for the current song

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

//    	

void CMPXAlbumArtUtil::ExtractThumbnailL(

        const CMPXMedia* aMedia)

    {

    MPX_FUNC("CMPXAlbumArtUtil::ExtractThumbnailL");

    TMPXItemId currentId( aMedia->ValueTObjectL<TMPXItemId>( KMPXMediaGeneralId ) );

    if (currentId == KMPXInvalidItemId )

        {

        User::Leave( KErrNotFound );

        }

    if (aMedia->IsSupported( KMPXMediaMusicAlbumArtFileName ) )

        {

        const TDesC& album = aMedia->ValueText( KMPXMediaMusicAlbumArtFileName );

#ifdef _DEBUG

        RDebug::RawPrint(album);

#endif

        if (album.Compare( KNullDesC) != 0 )

            {

            CThumbnailObjectSource* source = CThumbnailObjectSource::NewLC( album, KMPXAlbumMimeType );

            TInt ret = NULL;

            if(iThumbnailManager && iReqId >0)

                {

                iThumbnailManager->CancelRequest( iReqId );

                }

			if(iThumbnailManager)

				{   

            	TRAPD(err, iReqId = TInt (iThumbnailManager->GetThumbnailL( *source, (TAny*)ret)));	

    	        if( err != KErrNone)

                	{

                	User::Leave( KErrNotFound );

                	}

				}  

            CleanupStack::PopAndDestroy( source );

            }

        }

    }