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/*
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* Copyright (c) 2008 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 processor and scaler
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*
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*/
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#include "cvimpstimageprocessor.h"
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#include "tvimpstconsts.h"
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#include <imageconversion.h>
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#include <bitmaptransforms.h>
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#include <s32file.h>
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#include <e32cmn.h>
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#include "uiservicetabtracer.h"
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// CONSTANTS
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const TInt KChatCustomBitmapWidth = 65;
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const TInt KChatCustomBitmapHeight = 65;
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const TInt KMaxImageSize = 1800; //2k
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const TInt KMimeLength = 16;
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const TInt KScaleSize = 10;
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//-----------------------------------------------------------------------------
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// CCAImageLoader::CCAImageLoader
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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CVimpstImageProcessor::CVimpstImageProcessor( MCAImageProcessObserver* aObserver )
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: CActive( CActive::EPriorityLow ),iObserver(aObserver),iScaleSize(KScaleSize)
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{
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CActiveScheduler::Add( this );
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::CVimpstImageProcessor
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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CVimpstImageProcessor::~CVimpstImageProcessor()
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{
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iFs.Close();
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delete iImageDecoder;
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delete iScaler;
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delete iImageEncoder;
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if(!isBitmapReturned)
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{
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delete iBitmap;
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}
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delete iMimeType;
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::NewL
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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CVimpstImageProcessor* CVimpstImageProcessor::NewL( MCAImageProcessObserver* aObserver)
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{
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TRACER_AUTO;
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CVimpstImageProcessor* self =
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new ( ELeave ) CVimpstImageProcessor(aObserver);
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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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// CVimpstImageProcessor::ConstructL
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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void CVimpstImageProcessor::ConstructL()
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{
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User::LeaveIfError( iFs.Connect() );
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::RunL
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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void CVimpstImageProcessor::RunL()
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{
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TRACER_AUTO;
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TInt status = iStatus.Int();
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if(!status)
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{
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switch(iProcessingState)
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{
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case EConvertImageDatatoBitmap:
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{
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ConvertImageToBitmapL();
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break;
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}
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case EScaleBitmap:
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{
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ScaleBitmapL();
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break;
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}
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case EConentFromScaledBitmap:
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{
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ContentFromScaledBitmapL();
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break;
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}
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case EProcessingComplete:
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{
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if( iContent->Length() > KMaxImageSize)
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{
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delete iScaler;
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iScaler = NULL;
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delete iImageEncoder;
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iImageEncoder = NULL;
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delete iContent;
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iTargetSize.SetSize( KChatCustomBitmapWidth - iScaleSize, KChatCustomBitmapHeight - iScaleSize );
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iScaleSize += KScaleSize;
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ScaleBitmapL();
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}
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else
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{
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TRACE("RunL completed ");
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CompleteRequestL();
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}
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break;
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}
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default:
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{
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}
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}
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}
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else
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{
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TRACE("RunL completed ");
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CompleteRequestL();
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}
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::ConvertImageToBitmapL()
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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void CVimpstImageProcessor::ConvertImageToBitmapL()
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{
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TRACER_AUTO;
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TSize origSize( iImageDecoder->FrameInfo().iOverallSizeInPixels );
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ScaleSize( origSize, iTargetSize );
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TBool fullyScaleable( iImageDecoder->FrameInfo().iFlags & TFrameInfo::EFullyScaleable );
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TSize decodeSize( DecodeSize( origSize, iTargetSize, fullyScaleable ) );
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iBitmap = new (ELeave) CFbsBitmap();
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User::LeaveIfError( iBitmap->Create( decodeSize,
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iImageDecoder->FrameInfo().iFrameDisplayMode ) );
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iImageDecoder->Convert( &iStatus, *iBitmap );
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iProcessingState = EScaleBitmap; // set state to next step
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if( !IsActive() )
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{
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SetActive();
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}
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::ScaleBitmapL()
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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void CVimpstImageProcessor::ScaleBitmapL()
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{
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TRACER_AUTO;
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TSize currentSize( iBitmap ? iBitmap->SizeInPixels() : iTargetSize );
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if( currentSize != iTargetSize )
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{
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// bitmap exists and the size is wrong,
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// we have to scale the bitmap
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iScaler = CBitmapScaler::NewL();
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iScaler->Scale( &iStatus, *iBitmap, iTargetSize );
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iProcessingState = EConentFromScaledBitmap; // set state to next step
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if( !IsActive() )
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{
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SetActive();
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}
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}
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else
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{ // get content from scaled bitmap
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ContentFromScaledBitmapL();
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}
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::ContentFromScaledBitmapL()
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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void CVimpstImageProcessor::ContentFromScaledBitmapL()
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{
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iContent = NULL;
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iImageEncoder = CImageEncoder::DataNewL( iContent,*iMimeType);
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iImageEncoder->Convert( &iStatus, *iBitmap );
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iProcessingState = EProcessingComplete ; // set state to next step
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if( !IsActive() )
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{
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SetActive();
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}
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::DoCancel
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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void CVimpstImageProcessor::DoCancel()
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{
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ClearState();
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::RunError
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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TInt CVimpstImageProcessor::RunError( TInt aError )
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{
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if( IsActive() )
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{
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iStatus = aError;
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Cancel();
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}
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if( aError == KErrNoMemory )
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{
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CActiveScheduler::Current()->Error( KErrNoMemory );
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}
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// Clean up and reset all pending messages
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ClearState();
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TRAP_IGNORE( ResetProcessingL( aError ) );
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return KErrNone;
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::StartProcessingFromDataL
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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TInt CVimpstImageProcessor::ProcessFromDataL( const TDesC8& aImageData , const TDesC8& aMimeType)
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{
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TRACER_AUTO;
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TInt err = KErrNone;
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if ( aMimeType.Length())
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{
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// if the mimetype is passed then allocate the memory
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iMimeType = aMimeType.AllocL();
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}
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else
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{
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// if no mimetype find the mimetype
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iMimeType = HBufC8::NewL( KMimeLength);
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TPtr8 mimePtr = iMimeType->Des();
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TRAP(err,CImageDecoder::GetMimeTypeDataL( aImageData , mimePtr ));
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if(KErrNone != err)
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{
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return err;
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}
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}
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iImageDecoder = NULL;
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// need to check for the mimetype length, as sometimes CImageDecoder::GetMimeTypeDataL
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// is alos not able to give the mimetype
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iImageDecoder = CImageDecoder::DataNewL(iFs, aImageData , *iMimeType);
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iProcessingState = EConvertImageDatatoBitmap;
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RunL();
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return err;
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::ProcessFromFileL
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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void CVimpstImageProcessor::ProcessFromFileL( const TDesC& aFileName , const TDesC8& aMimeType)
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{
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TRACER_AUTO;
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iMimeType = aMimeType.AllocL();
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iImageDecoder = NULL;
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iImageDecoder = CImageDecoder::FileNewL(iFs, aFileName, *iMimeType );
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iProcessingState = EConvertImageDatatoBitmap;
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RunL();
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::CancelProcessing
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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void CVimpstImageProcessor::CancelProcessing()
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{
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if( IsActive() )
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{
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Cancel();
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}
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::RegisterObserver
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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void CVimpstImageProcessor::RegisterObserver( MCAImageProcessObserver* aObserver )
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{
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iObserver = aObserver;
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::GetContentData
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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HBufC8* CVimpstImageProcessor::GetContentData()
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{
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return iContent;
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::Bitmap
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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CFbsBitmap& CVimpstImageProcessor::Bitmap()
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{
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isBitmapReturned = ETrue;
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return *iBitmap;
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::DecodeSize
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// Scale to nearest (larger or equal) size with ratio 1:1, 1:2, 1:4 or 1:8
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//-----------------------------------------------------------------------------
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TSize CVimpstImageProcessor::DecodeSize( const TSize& aSize, const TSize& aTargetSize,
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TBool aAnyRatio )
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{
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TRACER_AUTO;
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if( aAnyRatio || aSize == aTargetSize )
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{
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// decoder can scale to any ratio or the size is already correct
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return aTargetSize;
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}
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// 1:1 is always valid ratio for decode scaling
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TInt lastValidRatio( 1 );
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for( TInt ratio( KDecodeScaleRatioMin ); ratio <= KDecodeScaleRatioMax; ratio <<= 1 )
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{
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if( aSize.iWidth % ratio + aSize.iHeight % ratio == 0 )
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{
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// this ratio is valid
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if( aSize.iWidth / ratio < aTargetSize.iWidth ||
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aSize.iHeight / ratio < aTargetSize.iHeight )
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{
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// the decoded size was smaller in some dimension,
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// the last valid ratio should be used
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break;
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}
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// this scale ratio results to greater or equal size
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lastValidRatio = ratio;
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}
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}
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// return the size scaled with correct ratio
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return TSize( aSize.iWidth / lastValidRatio,
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aSize.iHeight / lastValidRatio );
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::ScaleSize
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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TBool CVimpstImageProcessor::ScaleSize( const TSize& aSize, TSize& aNewSize )
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{
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if( Max( aSize.iHeight, aSize.iWidth ) > KChatCustomBitmapWidth )
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{
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aNewSize.SetSize( KChatCustomBitmapWidth, KChatCustomBitmapHeight );
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return ETrue;
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}
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// old size is correct
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aNewSize = aSize;
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return EFalse;
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::CompleteRequestL
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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void CVimpstImageProcessor::CompleteRequestL()
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{
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iObserver->HandleProcessingCompleteL( iStatus.Int() );
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::ResetProcessingL
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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void CVimpstImageProcessor::ResetProcessingL( TInt aReason )
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{
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// cancel operation
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if( IsActive() )
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{
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iStatus = aReason;
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Cancel();
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}
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}
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//-----------------------------------------------------------------------------
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// CVimpstImageProcessor::ClearState
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// ( Other items commented in header )
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//-----------------------------------------------------------------------------
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void CVimpstImageProcessor::ClearState()
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{
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if( iScaler )
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{
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iScaler->Cancel();
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delete iScaler;
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iScaler = NULL;
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}
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if( iImageDecoder )
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{
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iImageDecoder->Cancel();
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delete iImageDecoder;
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iImageDecoder = NULL;
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}
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if( iImageEncoder )
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{
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iImageEncoder->Cancel();
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delete iImageEncoder;
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iImageEncoder = NULL;
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}
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if( iBitmap )
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{
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delete iBitmap;
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iBitmap = NULL;
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}
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if (iMimeType)
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{
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delete iMimeType;
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iMimeType = NULL;
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}
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}
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// End of file
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