fbs/fontandbitmapserver/sfbs/UTILS.H
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 16 Apr 2010 16:21:04 +0300
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permissions -rw-r--r--
Revision: 201009 Kit: 201015
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// Copyright (c) 1998-2009 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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#ifndef __UTILS_H__
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#define __UTILS_H__
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#include <e32std.h>
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#include <gdi.h>
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#include <fntstore.h>
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#include <bitmap.h>
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/**
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@internalComponent
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*/ 
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_LIT(KFBSERVPanicCategory,"FBSERV");
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_LIT(KFBSERVGlobalThreadName,"!Fontbitmapserver");
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_LIT(KFBSERVSharedChunkName,"FbsSharedChunk");
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_LIT(KFBSERVLargeChunkName,"FbsLargeChunk");
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#ifdef SYMBIAN_DEBUG_FBS_LOCKHEAP
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_LIT(KFBSERVDebugMutexName,"FbsDebugMutex");
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#endif
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/**
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@internalComponent
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*/
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const TUid KUidCFbsBitmapCreation={0x0009A2C};
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/**
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@internalComponent
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*/
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enum TFbsPanic
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	{
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	EFbsPanicNoConnection=1,
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	EFbsPanicBadConnection,
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	EFbsPanicUnknownMessage,
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	EFbsPanicActiveSchedulerError,
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	EFbsPanicStartupFailed,
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	EFbsTypefaceStoreError,
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	EFbsFontCreateFailed,
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	EFbsFontAddressViolation,
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	EFbsBitmapInvalidFormat,
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	EFbsBitmapInvalidMode,
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	EFbsBitmapInvalidCompression,
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	EFbsBitmapDecompressionError,
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	EFbsPanicChunkError,
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	EFbsColor256UtilError,
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	EFbsHardwareBitmapError,
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	EFbsNotSupportedForCompression,
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	EFbsBitmapAlignment,
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	EFbsBitmapInvalidScanLinePtr,
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	EFbsBitmapInvalidMode2,
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	EFbsBitmapInvalidMode3,
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	EFbsBitmapSwappingImpossible,
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	EFbsPanicBadHeapLock,
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	EFbsShaperNotYetCalled,
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	EFbsShaperInvalidArguments,
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	EFbsInvalidCompressionThreshold,
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	EFbsTypefaceIndexOutOfRange,
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	EFbsPanicBitmapDataCopy,
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	EFbsPanicBitmapReadOnly,
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	EFbsPanicInvalidBitmapType
0
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	};
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class TScanLine
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/**
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@internalComponent
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*/
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	{
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public:
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	TPoint iPoint;
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	TInt iLength;
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	TDisplayMode iDispMode;
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	};
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class TBmpSpec
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/**
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@internalComponent
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*/
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	{
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public:
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	TSize iSizeInPixels;
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	TDisplayMode iDispMode;
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	TInt iHandle;
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	TInt iServerHandle;
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	TInt iAddressOffset;
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	};
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class TBmpHandles
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/**
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@internalComponent
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*/
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	{
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public:
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	TInt iHandle;
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	TInt iServerHandle;
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	TInt iAddressOffset;
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	};
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class TFontInfo
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/**
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@internalComponent
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*/
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	{
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public:
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	TInt iHandle;
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	TInt iAddressOffset;
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	TInt iServerHandle;
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	};
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class TSizeInfo
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/**
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@internalComponent
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*/
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	{
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	public:
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		TSizeInfo(){}
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		TSizeInfo(TInt aMaxHeight,TSize aDevSize):iMaxHeight(aMaxHeight),iDevSize(aDevSize) {}
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	TInt iMaxHeight;
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	TSize iDevSize;
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	};
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class TIntParcel
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/**
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@internalComponent
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*/
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	{
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public:
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	TInt iInt;
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	};
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class TLoadBitmapArg
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/**
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@internalComponent
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*/
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	{
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public:
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	TInt iBitmapId;
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	TInt iShareIfLoaded;
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	TInt iFileOffset;
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	};
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IMPORT_C extern const TInt KFbServLargeChunkGrowByShifter;
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IMPORT_C extern const TInt KFbServLargeChunkSizeShifter;
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IMPORT_C extern const TInt KFbServLargeChunkMinPhysicalSize;
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IMPORT_C extern const TInt KFbServLargeChunkMinVirtualSize;
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IMPORT_C extern const TInt KFbServLargeChunkMaxVirtualSize;
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class CChunkPile : public CBase
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/**
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@internalComponent
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*/
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	{
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public:
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	IMPORT_C ~CChunkPile();
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	IMPORT_C static CChunkPile* NewL(const RChunk& aChunk);
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	IMPORT_C TUint8* Alloc(TInt aSize);
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	IMPORT_C void Free(TAny* aCell);
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	IMPORT_C TUint8* ChunkBase() const;
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	IMPORT_C static TInt VirtualSize();
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private:
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	CChunkPile(const RChunk& aChunk);
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	void ConstructL();
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	TInt DoAlloc(TUint8*& aCell, TInt aSize, RPointerArray<TUint8>& aCells, RArray<TInt>& aFreeCellLinks, TBool aLarge);
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	void DoFree(TUint8* aCell, RPointerArray<TUint8>& aCells, RArray<TInt>& aFreeCellLinks, TBool aLarge);
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	TInt GrowSmallSection(TInt aSize, TInt aLastFreeCell);
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	void ShrinkSmallSection(TInt aShrinkBy);
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private:
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	RChunk iChunk;
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	TInt iPageSize, iPageMask;
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	RPointerArray<TUint8> iSmallCells; // last address is not a cell but the top of the small section
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	RArray<TInt> iFreeSmallCellLinks; // index of Nth free small cell is element 0 + element 1 + ... + element N-1
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	TInt iLargeSectionBottom; // boundary between small & large sections
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	RPointerArray<TUint8> iLargeCells; // last address is not a cell but the top of the large section
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	RArray<TInt> iFreeLargeCellLinks; // index of Nth free large cell is element 0 + element 1 + ... + element N-1
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	RCriticalSection iLock;
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	};
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/**
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Used to pass sizes of FBServs default heap, heap for large bitmaps, and heap for small bitmaps.
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@internalComponent
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@test
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*/
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struct THeapSizes
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	{
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	TInt iDefault;
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	TInt iBig;
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	TInt iSmall;
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	};
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/**
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Used when the EFbsMessRasterize message is sent from client to server. Allows pointers to items
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created on the shared FBServ heap to be passed from the server to the client as offsets from the
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heap base. Valid pointers are recreated client side using these offsets combined with the client's
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heap base.
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@internalComponent 
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 */
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struct TRasterizeParams
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	{
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	TInt iMetricsOffset;
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	TInt iBitmapPointerOffset;
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	};
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IMPORT_C extern const TInt KFbServWritableDataPagingMode;
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/**
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Used to specify the writable data paging mode of fbserv.
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This may be set using the patchable constant KFbServWritableDataPagingMode at rom-build time via the definitions: 
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	SYMBIAN_GRAPHICS_FBSERV_PAGEDATA -request that fbserv writable data is paged.
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	SYMBIAN_GRAPHICS_FBSERV_UNPAGEDDATA -request that fbserv writable data is unpaged.
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	SYMBIAN_GRAPHICS_FBSERV_PAGE_BITMAP_DATA_ONLY -request that only bitmap data is paged.
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	SYMBIAN_GRAPHICS_FBSERV_PAGE_BITMAP_DATA_AND_SHARED_HEAP_ONLY -request that only bitmap data and shared heap are paged.
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@internalComponent
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*/
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enum TFbsWritableDataPagingMode
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	{
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	EFbsWdpDefault=0x00, //No change to the rom-build writable data paging configuration (nothing was specified).
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	EFbsWdpPagedData=0x01, //SYMBIAN_GRAPHICS_FBSERV_PAGEDATA was specified.
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	EFbsWdpUnpagedData=0x02, //SYMBIAN_GRAPHICS_FBSERV_UNPAGEDDATA was specified.
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	EFbsWdpPageBitmapDataChunkOnly=0x03, //SYMBIAN_GRAPHICS_FBSERV_PAGE_BITMAP_DATA_ONLY was specified.
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	EFbsWdpPageBitmapDataAndSharedHeapChunksOnly=0x04, //SYMBIAN_GRAPHICS_FBSERV_PAGE_BITMAP_DATA_AND_SHARED_HEAP_ONLY was specified.
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	};
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36
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/*
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Structure used to pass parameters from FBS client to FBS server.
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Used when opening/closing an outline iterator.
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@internalTechnology
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*/
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class TFBSGlyphOutlineParam 
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    {
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public:
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    TInt iHandle;
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    TInt iCount;
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    TBool iHinted;
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    };
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/*
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Structure used to pass font table/glyph outlines from FBS to FBS client.
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Used when opening an font table or an outline iterator.
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@internalTechnology
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*/
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class TOffsetLen 
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    {
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public:
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    TInt iOffset;
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    TInt iLen;
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    };
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0
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#endif
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