// Copyright (c) 2009 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:

//

/**

 @file

 @internalTechnology

*/

#include <e32base.h>

#include <e32property.h>

#include <fbs.h>

#include <caf/content.h>

#include <icl/imagedata.h>

#include <sysutil.h>

#include <pathinfo.h> // PathInfo

#include <bautils.h> // FileExists

#include <mtp/cmtptypeopaquedata.h>

#include "cmtpimagedpthumbnailcreator.h"

#include "mtpimagedpconst.h"

#include "mtpimagedputilits.h"

#include "cmtpimagedp.h"

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

// CMTPImageDpThumbnailCreator::NewL

// 2-phased constructor.

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

//

CMTPImageDpThumbnailCreator* CMTPImageDpThumbnailCreator::NewL(CMTPImageDataProvider& aDataProvider)

    {

    CMTPImageDpThumbnailCreator* self= new (ELeave) CMTPImageDpThumbnailCreator(aDataProvider);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

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

// CMTPImageDpThumbnailCreator::~CMTPImageDpThumbnailCreator

// C++ destructor.

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

//    

CMTPImageDpThumbnailCreator::~CMTPImageDpThumbnailCreator()

    {

    Cancel();

    if(EGetting == iState)

        {

        iThumbMgr->CancelRequest(iCurrentReq);

        }

    delete iData;

    delete iImgEnc;

#ifdef MTPTHUMBSCALING

    delete iScaler;

#endif

    delete iBitmap;  

    delete iObjectSource;

    delete iThumbMgr;

    if(iActiveSchedulerWait != NULL && iActiveSchedulerWait->IsStarted())

        {

        *iCreationErr = KErrNotReady;

        iActiveSchedulerWait->AsyncStop();

        }

    delete iActiveSchedulerWait;

    }

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

// CMTPImageDpThumbnailCreator::CMTPImageDpThumbnailCreator

// C++ constructor.

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

//    

CMTPImageDpThumbnailCreator::CMTPImageDpThumbnailCreator(CMTPImageDataProvider& aDataProvider): 

    CActive(EPriorityStandard),

    iDataProvider(aDataProvider)

    {

    CActiveScheduler::Add(this);  

    }

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

// CMTPImageDpThumbnailCreator::ConstructL

// 2nd phase constructor.

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

//

void CMTPImageDpThumbnailCreator::ConstructL()

    {

    iThumbMgr = CThumbnailManager::NewL( *this ); 

    iThumbMgr->SetThumbnailSizeL( EGridThumbnailSize );

#ifdef MTPTHUMBSCALING

    iScaler = CBitmapScaler::NewL();

#endif    

    iActiveSchedulerWait = new (ELeave) CActiveSchedulerWait();

    }

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

// CMTPImageDpThumbnailCreator::DoCancel

// From CActive.

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

//

void CMTPImageDpThumbnailCreator::DoCancel()

    {

    switch(iState)

        {

#ifdef MTPTHUMBSCALING

        case EScaling:

            iScaler->Cancel();

            break;

#endif

        case EEncoding:

            iImgEnc->Cancel();

            break;

        default:

            break;

        }

    if(iActiveSchedulerWait->IsStarted())

        {

        *iCreationErr = KErrCancel;

        iActiveSchedulerWait->AsyncStop();

        }

    // we will not continue creating thumbs.

    }

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

// CMTPImageDpThumbnailCreator::RunL

// From CActive.

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

//    

void CMTPImageDpThumbnailCreator::RunL()

    {

    switch (iState)

        { 

#ifdef MTPTHUMBSCALING

        case EGetted:

            {

            ScaleBitmap();

            iState = EScaling;

            break;

            }

#endif

        case EScaling:

            {

            EncodeImageL( );

            iState=EEncoding;

            break;

            }

        case EEncoding:

            {

            iState=EIdle;

            if (iThumbMgr->Flags() == CThumbnailManager::EDoNotCreate)

                {

                delete iData;

                iData = HBufC8::NewL(1);

                }

            if(iActiveSchedulerWait->IsStarted())

                {

                iActiveSchedulerWait->AsyncStop();

                }

            break;

            }

        default:

            {

            User::Leave(KErrGeneral);

            break;

            }

        }

    }

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

// RunError

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

//    

TInt CMTPImageDpThumbnailCreator::RunError(TInt aErr)

    {

    iState=EIdle;

    if(iActiveSchedulerWait->IsStarted())

        {

        *iCreationErr = aErr;

        iActiveSchedulerWait->AsyncStop();

        }

    // no need to cancel iScalerP since only leave is issued if scaler creation fails

    return KErrNone;

    }

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

// 

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

//

void CMTPImageDpThumbnailCreator::GetThumbnailL(const TDesC& aFileName, HBufC8*& aDestinationData,  TInt& result)

    {

    GetThumbL(aFileName);

    iCreationErr = &result;     //reset the err flag

    *iCreationErr = KErrNone;

    iActiveSchedulerWait->Start();

    /**

     * transfer the ownership of iData if query successfully

     */

    if (*iCreationErr == KErrNone)

        {

        aDestinationData = iData;

        iData = NULL;        

        }

    else

        {

        aDestinationData = NULL;

        }

    }

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

// 

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

//

void CMTPImageDpThumbnailCreator::ClearThumbnailData()

    {

    delete iData;

    iData = NULL;

    delete iBitmap;

    iBitmap = NULL;

    delete iObjectSource;

    iObjectSource = NULL;

    delete iImgEnc;

    iImgEnc = NULL;

    }

void CMTPImageDpThumbnailCreator::GetThumbL(const TDesC& aFileName)

    {

    // Create an object source representing a path to a file on local

    // file system.

    delete iObjectSource;

    iObjectSource = NULL;

    TParsePtrC parse(aFileName);

    if (parse.Ext().Length() >= 1)

        {

        const TDesC& mimeType = iDataProvider.FindMimeType(parse.Ext().Mid(1));

        iObjectSource = CThumbnailObjectSource::NewL(aFileName, mimeType);

        }

    else

        {

        iObjectSource = CThumbnailObjectSource::NewL(aFileName, KNullDesC);

        }

    iCurrentReq = iThumbMgr->GetThumbnailL( *iObjectSource );

    iState = EGetting;

    }

#ifdef MTPTHUMBSCALING

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

// CMTPImageDpThumbnailCreator::ScaleBitmapL

// Scales the bitmap to the thumbnail size.

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

//

void CMTPImageDpThumbnailCreator::ScaleBitmap()

    {

    TSize size( KThumbWidht, KThumbHeigth ); // size 160x120      

    // Resize image to thumbnail size 

//    iScaler->Scale( &iStatus, *iBitmap, size );

    /**

     * [Thumbnail SIZE]: performance improvement

     * comments scaling code, but it breaks PTP spect.

     * so if we meet any break of compatible test, we should re-scale thumbnail size

     */    

    TRequestStatus* status = &iStatus;

    User::RequestComplete( status, KErrNone );

    SetActive();

    }

#endif

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

// CMTPImageDpThumbnailCreator::EncodeImageL

// Encodes bitmap as a jpeg image.

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

//

void CMTPImageDpThumbnailCreator::EncodeImageL( )

    {

    delete iData;

    iData = NULL;

    delete iImgEnc;

    iImgEnc = NULL;

    // Convert bitmap to jpg

    iImgEnc = CImageEncoder::DataNewL( iData, KPtpMimeJPEG, CImageEncoder::EPreferFastEncode );

    iImgEnc->Convert( &iStatus, *iBitmap );

    SetActive();

    }

//

//

void CMTPImageDpThumbnailCreator::ThumbnailReady( TInt aError, MThumbnailData& aThumbnail, TThumbnailRequestId aId )

    {

    // This function must not leave.

    if(iCurrentReq != aId)

        {

        return;

        }

    if (aError == KErrNone)

        {

        TRAP_IGNORE(iThumbMgr->SetFlagsL(CThumbnailManager::EDefaultFlags));

        delete iBitmap;

        // Claim ownership of the bitmap instance for later use

        iBitmap = aThumbnail.DetachBitmap();

#ifdef MTPTHUMBSCALING

        iState = EGetted;

#else

        iState = EScaling;				//direct set to Scaling state jump the scaling function

#endif

        }

    else if ((iThumbMgr->Flags() == CThumbnailManager::EDoNotCreate) && (aError == KErrNotFound))

        {

        iState = EEncoding;

        //don't trigger TNM to create thumbnail if image files are too big

        //iThumbMgr->CreateThumbnails(*iObjectSource);

        aError = KErrNone;

        }

    iStatus=KRequestPending;

    TRequestStatus* status=&iStatus;

    User::RequestComplete(status, aError);

    SetActive();

    }

void CMTPImageDpThumbnailCreator::ThumbnailPreviewReady( MThumbnailData& /*aThumbnail*/, TThumbnailRequestId /*aId*/ )

    {

    }

// End of file