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// Copyright (c) 1995-2009 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:
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//
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#include <s32file.h>
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#include <fbs.h>
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#include <bitmap.h>
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#include <graphics/bitmapuid.h>
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#include "fbsbitmapasyncstreamer.h"
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CFbsBitmapAsyncStreamer::CFbsBitmapAsyncStreamer(TMode aMode):
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CBase(),
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iFbs(RFbsSession::GetSession()),
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iMode(aMode)
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{}
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EXPORT_C CFbsBitmapAsyncStreamer::~CFbsBitmapAsyncStreamer()
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{
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iReadStream.Close();
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iWriteStream.Close();
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delete iStore;
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if(iMode==ELoad) delete iBitmap;
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}
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EXPORT_C CFbsBitmapAsyncStreamer* CFbsBitmapAsyncStreamer::NewL(TMode aMode)
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{
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CFbsBitmapAsyncStreamer* thisptr=new(ELeave) CFbsBitmapAsyncStreamer(aMode);
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CleanupStack::PushL(thisptr);
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thisptr->ConstructL();
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CleanupStack::Pop();
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return(thisptr);
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}
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void CFbsBitmapAsyncStreamer::ConstructL()
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{
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if(iMode==ELoad) iBitmap=new(ELeave) CFbsBitmap;
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}
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EXPORT_C TInt CFbsBitmapAsyncStreamer::Load(const TDesC& aFilename,TInt32 aId,TInt& aScanLines)
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{
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if(iMode!=ELoad) return(KErrGeneral);
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TRAPD(ret,DoLoadL(aFilename,aId));
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if(ret!=KErrNone) return(ret);
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iDispMode = CBitwiseBitmap::DisplayMode(iHeader.iBitsPerPixel,iHeader.iColor);
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ret=iBitmap->Create(iHeader.iSizeInPixels,iDispMode);
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iBitmap->BeginDataAccess();
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iBitmap->Address()->iHeader=iHeader;
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if(ret!=KErrNone) return(ret);
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aScanLines=iHeader.iSizeInPixels.iHeight;
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iScanLineBase=(TUint32*)iBitmap->DataAddress();
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return(KErrNone);
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}
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void CFbsBitmapAsyncStreamer::DoLoadL(const TDesC& aFilename,TInt32 aId)
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{
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iStore=CDirectFileStore::OpenL(iFbs->FileServer(),aFilename,EFileShareReadersOnly);
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if (iStore->Type()[1]!=KMultiBitmapFileImageUid)
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User::LeaveIfError(KErrGeneral);
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TStreamId streamid=iStore->Root();
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RStoreReadStream readstream;
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readstream.OpenL(*iStore,streamid);
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TInt numbitmaps=readstream.ReadInt32L();
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if(numbitmaps<aId+1)
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User::Leave(KErrUnknown);
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TStreamId bmpstreamid;
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bmpstreamid.InternalizeL(readstream);
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for(TInt count=0;count<aId;count++)
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bmpstreamid.InternalizeL(readstream);
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readstream.Close();
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iReadStream.OpenL(*iStore,bmpstreamid);
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CBitwiseBitmap::InternalizeHeaderL(iReadStream,iHeader);
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}
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EXPORT_C TBool CFbsBitmapAsyncStreamer::LoadScanLinesL(TInt aNumberOfScanLines,CFbsBitmap*& aBitmap)
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{
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if(iMode!=ELoad || iBitmap==NULL) User::Leave(KErrGeneral);
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if(iHeader.iCompression!=ENoBitmapCompression)
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{
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TRAP_IGNORE(iBitmap->Address()->DoInternalizeL(iReadStream,iHeader.iBitmapSize-iHeader.iStructSize,iBitmap->DataAddress()));
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iBitmap->EndDataAccess(EFalse);
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aBitmap=iBitmap;
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iBitmap=NULL;
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return(ETrue);
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}
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aNumberOfScanLines=Abs(aNumberOfScanLines);
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if(aNumberOfScanLines+iCurrentScanLine>iHeader.iSizeInPixels.iHeight)
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aNumberOfScanLines=iHeader.iSizeInPixels.iHeight-iCurrentScanLine;
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TInt slbytes = CBitwiseBitmap::ByteWidth(iHeader.iSizeInPixels.iWidth,iDispMode);
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TUint8* sladd=(TUint8*)iBitmap->Address()->ScanLineAddress(iScanLineBase,iCurrentScanLine);
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iReadStream.ReadL(sladd,aNumberOfScanLines*slbytes);
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iCurrentScanLine+=aNumberOfScanLines;
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if(iCurrentScanLine==iHeader.iSizeInPixels.iHeight)
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{
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iBitmap->EndDataAccess(EFalse);
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aBitmap=iBitmap;
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iBitmap=NULL;
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return(ETrue);
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}
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return(EFalse);
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}
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EXPORT_C TInt CFbsBitmapAsyncStreamer::Save(const TDesC& aFilename,CFbsBitmap* aBitmap,TInt32& aId,TInt& aScanLines)
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{
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if(iMode!=ESave || aBitmap==NULL || !aBitmap->iHandle) return(KErrGeneral);
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RFile file;
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TInt ret=file.Replace(iFbs->FileServer(),aFilename,EFileWrite);
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if(ret!=KErrNone) return(ret);
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iHeader=aBitmap->Header();
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iDispMode = CBitwiseBitmap::DisplayMode(iHeader.iBitsPerPixel,iHeader.iColor);
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TRAP(ret,DoSaveL(file));
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if(ret!=KErrNone) return(ret);
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aId=0;
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iBitmap=aBitmap;
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iBitmap->BeginDataAccess();
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aScanLines=iHeader.iSizeInPixels.iHeight;
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iScanLineBase=(TUint32*)aBitmap->DataAddress();
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return(KErrNone);
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}
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void CFbsBitmapAsyncStreamer::DoSaveL(RFile& aFile)
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{
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iStore=CDirectFileStore::NewL(aFile);
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TUidType uidtype(KDirectFileStoreLayoutUid,KMultiBitmapFileImageUid);
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iStore->SetTypeL(uidtype);
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iId=iWriteStream.CreateL(*iStore);
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iWriteStream.WriteInt32L(iHeader.iBitmapSize);
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iWriteStream.WriteInt32L(iHeader.iStructSize);
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iWriteStream.WriteInt32L(iHeader.iSizeInPixels.iWidth);
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iWriteStream.WriteInt32L(iHeader.iSizeInPixels.iHeight);
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iWriteStream.WriteInt32L(iHeader.iSizeInTwips.iWidth);
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iWriteStream.WriteInt32L(iHeader.iSizeInTwips.iHeight);
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iWriteStream.WriteInt32L(iHeader.iBitsPerPixel);
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iWriteStream.WriteUint32L(iHeader.iColor);
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iWriteStream.WriteInt32L(0);
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iWriteStream.WriteUint32L(iHeader.iCompression);
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}
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EXPORT_C TBool CFbsBitmapAsyncStreamer::SaveScanLinesL(TInt aNumberOfScanLines)
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{
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if(iMode!=ESave || iBitmap==NULL) User::Leave(KErrGeneral);
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aNumberOfScanLines=Abs(aNumberOfScanLines);
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if(aNumberOfScanLines+iCurrentScanLine>iHeader.iSizeInPixels.iHeight)
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aNumberOfScanLines=iHeader.iSizeInPixels.iHeight-iCurrentScanLine;
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TInt slbytes = CBitwiseBitmap::ByteWidth(iHeader.iSizeInPixels.iWidth,iDispMode);
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TUint8* sladd=(TUint8*)iBitmap->Address()->ScanLineAddress(iScanLineBase,iCurrentScanLine);
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iWriteStream.WriteL(sladd,aNumberOfScanLines*slbytes);
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iCurrentScanLine+=aNumberOfScanLines;
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if(iCurrentScanLine==iHeader.iSizeInPixels.iHeight)
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{
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iBitmap->EndDataAccess(ETrue);
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iWriteStream.Close();
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TStreamId headstreamid=iWriteStream.CreateL(*iStore);
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iWriteStream.WriteInt32L(1); // number of bitmaps
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iId.ExternalizeL(iWriteStream); // stream id of bitmap
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iWriteStream.Close();
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iStore->SetRootL(headstreamid);
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delete iStore;
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iStore=NULL;
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return(ETrue);
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}
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return(EFalse);
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}
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