sl@0: // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #if !defined(__BITMAP_H__)
sl@0: #define __BITMAP_H__
sl@0: #if !defined(__E32STD_H__)
sl@0: #include <e32std.h>
sl@0: #endif
sl@0: #if !defined(__F32FILE_H__)
sl@0: #include <f32file.h>
sl@0: #endif
sl@0: #if !defined(__GDI_H__)
sl@0: #include <gdi.h>
sl@0: #endif
sl@0: 
sl@0: #ifndef SYMBIAN_ENABLE_SPLIT_HEADERS
sl@0: #include <graphics/bitmapuid.h>
sl@0: #endif
sl@0: 
sl@0: #ifdef _DEBUG
sl@0: 	#define SYMBIAN_DEBUG_FBS_LOCKHEAP
sl@0: #endif
sl@0: 
sl@0: //Forward declarations
sl@0: class CChunkPile;
sl@0: class TCompressionBookMark;
sl@0: class CFbsRasterizer;
sl@0: 
sl@0: /** 
sl@0: Defines the types of file compression. 
sl@0: @publishedAll
sl@0: @released
sl@0: */
sl@0: enum TBitmapfileCompression
sl@0: 	{
sl@0: 	/** Bitmap file is not compressed. */
sl@0: 	ENoBitmapCompression,
sl@0: 	/** File is compressed using run-length encoding compression. */
sl@0: 	EByteRLECompression,
sl@0: 	/** File is compressed using twelve bit run-length encoding compression. */
sl@0: 	ETwelveBitRLECompression,
sl@0: 	/** File is compressed using sixteen bit run-length encoding compression. */
sl@0: 	ESixteenBitRLECompression,
sl@0: 	/** File is compressed using twenty four bit run-length encoding compression. */
sl@0: 	ETwentyFourBitRLECompression,
sl@0: 	/** File is compressed using twenty four bit run-length encoding compression from 32-bit bitmap buffer. */
sl@0: 	EThirtyTwoUBitRLECompression,
sl@0: 	/** File is compressed using thirty two bit run-length encoding compression from 32-bit bitmap buffer. */
sl@0: 	EThirtyTwoABitRLECompression,
sl@0: 	/** File is compressed as a palette plus reduced bit-per-pixel.  Only applicable to bitmaps already loaded in RAM. */
sl@0: 	EGenericPaletteCompression,
sl@0: 	/** Extended bitmap. Data format is proprietary to licensee. */
sl@0: 	EProprietaryCompression,
sl@0: 	//Insert new enum items here!
sl@0: 	ERLECompressionLast = 255
sl@0: 	};
sl@0: 
sl@0: /** 
sl@0: Defines the available file compression schemes. 
sl@0: @publishedAll
sl@0: @released
sl@0: */
sl@0: enum TBitmapfileCompressionScheme
sl@0: 	{
sl@0: 	/** File is compressed using run-length encoding compression. */
sl@0: 	ERLECompression,
sl@0: 	/** File is compressed as a palette plus reduced bit-per-pixel. */
sl@0: 	EPaletteCompression,
sl@0: 	/** File is compressed as a palette plus reduced bit-per-pixel, with automatic fallback to RLE if bitmap is not suitable*/
sl@0: 	EPaletteCompressionWithRLEFallback
sl@0: 	};
sl@0: 
sl@0: /**
sl@0: WARNING: Typedef for internal use ONLY. Compatibility is not guaranteed in future releases.
sl@0: @publishedAll
sl@0: @released
sl@0:  */
sl@0: typedef void (*TAssignFunction)(TUint8*& aDestPtr, TUint32 aColor);
sl@0: /**
sl@0: WARNING: Typedef for internal use ONLY. Compatibility is not guaranteed in future releases.
sl@0: @publishedAll
sl@0: @released
sl@0:  */
sl@0: typedef void (*TDecodeFunction)(TUint8* aDataPtr, TUint32* aPalettePtr, TUint8*& aDestPtr, TAssignFunction aAssignFunction);
sl@0: 
sl@0: /** 
sl@0: Contains information about the bitmap when streaming bitmaps to stores. 
sl@0: @publishedAll
sl@0: @released
sl@0: */
sl@0: class SEpocBitmapHeader
sl@0: 	{
sl@0: public:
sl@0: 	inline SEpocBitmapHeader() :
sl@0: 		iBitmapSize(sizeof(SEpocBitmapHeader)),
sl@0: 		iStructSize(sizeof(SEpocBitmapHeader)),
sl@0: 		iSizeInPixels(0, 0),
sl@0: 		iSizeInTwips(0, 0),
sl@0: 		iBitsPerPixel(0),
sl@0: 		iColor(0),
sl@0: 		iPaletteEntries(0),
sl@0: 		iCompression(ENoBitmapCompression)
sl@0: 		{
sl@0: 		}
sl@0: public:
sl@0: 	/** Defines whether bitmap is colour and if it comprises an alpha channel. */ 
sl@0: 	enum TColor 
sl@0: 		{
sl@0: 		/** Bitmap doesn't comprise color */
sl@0: 		ENoColor=0, 
sl@0: 		/** Bitmap comprises color */
sl@0: 		EColor=1, 
sl@0: 		/** Bitmap comprises color with alpha channel */
sl@0: 		EColorAlpha=2, 
sl@0: 		/** Bitmap comprises pre-multiplied colors with alpha channel */
sl@0: 		EColorAlphaPM=3,
sl@0: 		/** Unknown format */
sl@0: 		EColorUndefined=8
sl@0: 		};
sl@0: public:
sl@0: 	/** The size of the bitmap data, in bytes. */
sl@0: 	TInt iBitmapSize;
sl@0: 	/** The size of the structure in which the bitmap data is stored. */
sl@0: 	TInt iStructSize;
sl@0: 	/** The size of the bitmap, in pixels. */
sl@0: 	TSize iSizeInPixels;
sl@0: 	/** The size of the bitmap, in twips. */
sl@0: 	TSize iSizeInTwips;
sl@0: 	/** The bitmap's number of bits per pixel */
sl@0: 	TInt iBitsPerPixel;
sl@0: 	/** Whether or not the bitmap is colour and comprises an alpha value. */
sl@0: 	TInt iColor;
sl@0: 	/** The number of entries in the bitmap's palette. */
sl@0: 	TInt iPaletteEntries;
sl@0: 	/** The type of compression used to store the bitmap. */
sl@0: 	TBitmapfileCompression iCompression;
sl@0: 	};
sl@0: 
sl@0: /**
sl@0: WARNING: Class for internal use ONLY.  Compatibility is not guaranteed in future releases.
sl@0: 
sl@0: @publishedAll
sl@0: @released 
sl@0:  */
sl@0: class TLineScanningPosition
sl@0: 	{
sl@0: public:
sl@0: 	inline TLineScanningPosition(TUint32* aSrcDataPtr);
sl@0: public:
sl@0: 	TUint8* iSrcDataPtr;
sl@0: 	TInt iCursorPos;
sl@0: 	HBufC8* iScanLineBuffer;
sl@0: 	CFbsRasterizer* const iRasterizer;
sl@0: 	};
sl@0: 
sl@0: class CShiftedFileStore;
sl@0: 
sl@0: /**
sl@0: BitGdi bitmap class (pseudo-CXxx class).
sl@0: WARNING: Class for internal use ONLY.  Compatibility is not guaranteed in future releases.
sl@0: @released
sl@0: */
sl@0: class CBitwiseBitmap
sl@0: 	{
sl@0: 	friend class CFbTop;
sl@0: 	friend class CFbClient;
sl@0: 	friend class CFbsBitmap;
sl@0: 	friend class CBitmapObject;
sl@0: 	friend class CFbsBitmapAsyncStreamer;
sl@0: 	friend class CFbsBackgroundCompression;
sl@0: 	friend class CleanupDelete<CBitwiseBitmap>;
sl@0: public:
sl@0: 	IMPORT_C TUid Uid() const;
sl@0: 	IMPORT_C void ExternalizeL(RWriteStream& aStream,const CFbsBitmap& aHandleBitmap) const;
sl@0: 	IMPORT_C void ExternalizeRectangleL(RWriteStream& aStream,const TRect& aRect,const CFbsBitmap& aHandleBitmap) const;
sl@0: 	IMPORT_C void InternalizeL(RReadStream& aStream);
sl@0: 	IMPORT_C static void InternalizeHeaderL(RReadStream& aStream,SEpocBitmapHeader& aHeader);
sl@0: 	IMPORT_C TSize SizeInPixels() const;
sl@0: 	IMPORT_C TSize SizeInTwips() const;
sl@0: 	IMPORT_C TDisplayMode DisplayMode() const;
sl@0: 	IMPORT_C TInt HorizontalTwipsToPixels(TInt aTwips) const;
sl@0: 	IMPORT_C TInt VerticalTwipsToPixels(TInt aTwips) const;
sl@0: 	IMPORT_C TInt HorizontalPixelsToTwips(TInt aPixels) const;
sl@0: 	IMPORT_C TInt VerticalPixelsToTwips(TInt aPixels) const;
sl@0: 	IMPORT_C void GetPixel(TRgb& aColor,const TPoint& aPos,TUint32* aBase, CFbsRasterizer* aRasterizer) const;
sl@0: 	IMPORT_C TInt GetScanLinePtr(TUint32*& aSlptr, TPoint& aPixel,TInt aLength, TUint32* aBase, TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	IMPORT_C TInt GetScanLinePtr(TUint32*& aSlptr, TInt& aLength, TPoint& aPixel,TUint32* aBase, TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	IMPORT_C void GetScanLine(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TBool aDither,const TPoint& aDitherOffset,TDisplayMode aDispMode,TUint32* aBase, TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	IMPORT_C void GetScanLine(TUint32*& aSlptr, TDes8& aBuf,const TPoint& aPixel,TInt aLength,TBool aDither,const TPoint& aDitherOffset,TDisplayMode aDispMode) const;
sl@0: 	IMPORT_C void GetScanLine(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TBool aDither,const TPoint& aDitherOffset,TDisplayMode aDispMode,TUint32* aBase) const;
sl@0: 	IMPORT_C void GetVerticalScanLine(TDes8& aBuf,TInt aX,TBool aDither,const TPoint& aDitherOffset,TDisplayMode aDispMode,TUint32* aBase, CFbsRasterizer* aRasterizer) const;
sl@0: 	IMPORT_C void StretchScanLine(TDes8& aBuf,const TPoint& aPixel,TInt aClipStrchX,TInt aClipStrchLen,TInt aStretchLength,TInt aOrgX,TInt aOrgLen,const TPoint& aDitherOffset,TDisplayMode aDispMode,TUint32* aBase) const;
sl@0: 	IMPORT_C void StretchScanLine(TDes8& aBuf,const TPoint& aPixel,TInt aClipStrchX,TInt aClipStrchLen,TInt aStretchLength,TInt aOrgX,TInt aOrgLen,const TPoint& aDitherOffset,TDisplayMode aDispMode,TUint32* aBase, TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	IMPORT_C TUint32* ScanLineAddress(TUint32* aBase,TUint aY) const;
sl@0: 	IMPORT_C TBool IsMonochrome(TUint32* aBase) const;
sl@0: 	IMPORT_C TBool IsLargeBitmap() const;
sl@0: 	IMPORT_C TInt CompressData();
sl@0: 	IMPORT_C TInt CompressData(TBitmapfileCompressionScheme aScheme);
sl@0: 	IMPORT_C TInt CheckBackgroundCompressData();
sl@0: 	IMPORT_C void SetCompressionBookmark(TLineScanningPosition& aLineScanningPosition, TUint32* aBase, const CFbsBitmap* aFbsBitmap);
sl@0: 	IMPORT_C TInt HardwareBitmapHandle() const;
sl@0: 	IMPORT_C TBool IsCompressedInRAM() const;
sl@0: 	IMPORT_C TBool IsCompressed() const;
sl@0: 	IMPORT_C TInt DataStride() const;
sl@0: 	IMPORT_C SEpocBitmapHeader Header() const;
sl@0: private:
sl@0: 	IMPORT_C void operator delete(TAny*);
sl@0: 	void operator delete(TAny*, TAny*) {}     // This function exists only to prevent a compiler warning
sl@0: 	IMPORT_C CBitwiseBitmap(RHeap* aHeap,CChunkPile* aPile);
sl@0: 	IMPORT_C ~CBitwiseBitmap();
sl@0: 	IMPORT_C void Reset();
sl@0: 	IMPORT_C TInt Construct(const TSize& aSize,TDisplayMode aDispMode,TUid aCreatorUid);
sl@0: 	IMPORT_C TInt ConstructExtended(const TSize& aSize, TDisplayMode aDispMode, TUid aType, TInt aDataSize);
sl@0: 	IMPORT_C void ConstructL(RFs& aFs,const TDesC& aFilename,TInt32 aId,TUint aFileOffset);
sl@0: 	IMPORT_C void ConstructL(RFile& aFile,TInt32 aId,TUint aFileOffset);
sl@0: 	IMPORT_C void ConstructL(CShiftedFileStore* aFileStore,TStreamId aStreamId);
sl@0: 	IMPORT_C TInt CopyData(const CBitwiseBitmap& aSourceBitmap);
sl@0: private:
sl@0: 	void GenerateLineFromCompressedTwelveBitData(TUint8* aDestBuffer, const TPoint& aPixel,TInt aLength,TUint32* aBase, TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	void GenerateLineFromCompressedEightBitData(TUint8* aDestBuffer, const TPoint& aPixel,TInt aLength,TUint32* aBase, TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	TUint8 GetGrayPixelEx(TInt aX,TUint32* aScanLineAddress) const;
sl@0: 	TRgb GetRgbPixelEx(TInt aX,TUint32* aScanLineAddress) const;
sl@0: 	void GetRgbPixelExMany(TInt aX,TUint32* aScanlinePtr,TUint32* aDest,TInt aLength) const;
sl@0:     void GetRgbPixelExMany16M(TInt aX,TUint32* aScanlinePtr,TUint8* aDest,TInt aLength) const;
sl@0:     void GetRgbPixelExMany16MAP(TInt aX,TUint32* aScanlinePtr,TUint32* aDest,TInt aLength) const;
sl@0: 	void GetScanLineGray2(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TBool aDither,const TPoint& aDitherOffset,TUint32* aScanlinePtr) const;
sl@0: 	void GetScanLineGray4(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TBool aDither,const TPoint& aDitherOffset,TUint32* aScanlinePtr) const;
sl@0: 	void GetScanLineGray16(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const;
sl@0: 	void GetScanLineGray256(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const;
sl@0: 	void GetScanLineColor16(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const;
sl@0: 	void GetScanLineColor256(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const;
sl@0: 	void GetScanLineColor4K(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const;
sl@0: 	void GetScanLineColor64K(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const;
sl@0: 	void GetScanLineColor16M(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const;
sl@0: 	void GetScanLineColor16MU(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const;
sl@0: 	void GetScanLineColorRgb(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const;
sl@0: 	void GetScanLineExBits(TDes8& aBuf,TInt aX,TInt aLength,TUint32* aScanlinePtr) const;
sl@0: 	void GetScanLineExBytes(TDes8& aBuf,TInt aX,TInt aLength,TUint32* aScanlinePtr) const;
sl@0: 	void DoExternalizeDataCompressedL(RWriteStream& aStream,TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	void DoExternalizeByteDataCompressedL(RWriteStream& aStream,TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	void DoExternalizeTwelveBitDataCompressedL(RWriteStream& aStream,TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	void DoExternalizeSixteenBitDataCompressedL(RWriteStream& aStream,TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	void DoExternalizeTwentyFourBitDataCompressedL(RWriteStream& aStream,TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	void DoExternalizeThirtyTwoUBitDataCompressedL(RWriteStream& aStream,TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	void DoExternalizeThirtyTwoABitDataCompressedL(RWriteStream& aStream,TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	TInt SizeOfDataCompressed(TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	TInt SizeOfByteDataCompressed(TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	TInt SizeOfTwelveBitDataCompressed(TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	TInt SizeOfSixteenBitDataCompressed(TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	TInt SizeOfTwentyFourBitDataCompressed(TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	TInt SizeOfThirtyTwoUBitDataCompressed(TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	TInt SizeOfThirtyTwoABitDataCompressed(TUint8* aData,TInt aSizeInBytes) const;
sl@0: 	TBool TrueColorPointerCompare(TUint8* aColorPointer,TUint8 aComponent1,TUint8 aComponent2,TUint8 aComponent3) const;
sl@0: 	TBool ColorAlphaPointerCompare(TUint8* aColorPointer,TUint8 aComponent1,TUint8 aComponent2,TUint8 aComponent3,TUint8 aComponent4) const;
sl@0: 	void DoInternalizeL(RReadStream& aStream,TInt aSrceSize,TUint32* aBase);
sl@0: 	void DoInternalizeCompressedDataL(RReadStream& aStream,TInt aSrceSize,TUint32* aBase,TBitmapfileCompression aCompression);
sl@0: 	void DoDecompressByteData(TUint8* aDestBuffer,TInt aDestSize,TUint8* aSrceBuffer,TInt aSrceSize);
sl@0: 
sl@0: 	void DoDecompressByteDataAltL(RReadStream& aStream,TInt aSrceSizeInBytes,TUint32* aBase);
sl@0: 	void DoDecompressTwelveBitData(TUint8* aDestBuffer,TInt aDestSize,TUint8* aSrceBuffer,TInt aSrceSize);
sl@0: 	void DoDecompressTwelveBitDataAltL(RReadStream& aStream,TInt aSrceSizeInBytes,TUint32* aBase);
sl@0: 	void DoDecompressSixteenBitData(TUint8* aDestBuffer,TInt aDestSize,TUint8* aSrceBuffer,TInt aSrceSize);
sl@0: 	void DoDecompressSixteenBitDataAltL(RReadStream& aStream,TInt aSrceSizeInBytes,TUint32* aBase);
sl@0: 	void DoDecompressTwentyFourBitData(TUint8* aDestBuffer,TInt aDestSize,TUint8* aSrceBuffer,TInt aSrceSize);
sl@0: 	void DoDecompressTwentyFourBitDataAltL(RReadStream& aStream,TInt aSrceSizeInBytes,TUint32* aBase);
sl@0: 	void DoDecompressThirtyTwoUBitData(TUint8* aDestBuffer,TInt aDestSize,TUint8* aSrceBuffer,TInt aSrceSize);
sl@0: 	void DoDecompressThirtyTwoUBitDataAltL(RReadStream& aStream,TInt aSrceSizeInBytes,TUint32* aBase);
sl@0: 	void DoDecompressThirtyTwoABitData(TUint8* aDestBuffer,TInt aDestSize,TUint8* aSrceBuffer,TInt aSrceSize);
sl@0: 	void DoDecompressThirtyTwoABitDataAltL(RReadStream& aStream,TInt aSrceSizeInBytes,TUint32* aBase);
sl@0: 	void DoStretchScanLine(TDes8& aBuf,TInt x,TInt y,TInt aClipStrchX,TInt aClipStrchLen,TInt aStretchLength,TInt aOrgX,TInt aOrgLen,const TPoint& aDitherOffset,TDisplayMode aDispMode,TUint32* aBase,TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	void DoCompressScanLine(TDes8& aBuf,TInt x,TInt y,TInt aClipStrchX,TInt aClipStrchLen,TInt aStretchLength,TInt aOrgX,TInt aOrgLen,const TPoint& aDitherOffset,TDisplayMode aDispMode,TUint32* aBase,TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	TUint32 HashTo1bpp(TUint32 aGray256,TBool aOddX,TBool aOddY) const;
sl@0: 	TUint32 HashTo2bpp(TUint32 aGray256,TInt aDitherIndex) const;
sl@0: 	TBool IsWordMonochrome(TUint32 aWord) const;
sl@0: 	TUint32* DataAddress() const;
sl@0: 	static void WhiteFill(TUint8* aData,TInt aDataSize,TDisplayMode aDispMode);
sl@0: 	static TInt ByteWidth(TInt aPixelWidth,TDisplayMode aDispMode);
sl@0: 	static TInt Bpp(TDisplayMode aDispMode);
sl@0: 	static TInt IsColor(TDisplayMode aDispMode);
sl@0: 	static TDisplayMode DisplayMode(TInt aBpp,TInt aColor);
sl@0: 	static TBitmapfileCompression CompressionType(TInt aBpp, TInt aColor);
sl@0: 	TInt DoGetScanLinePtr(TUint32*& aSlptr, TPoint& aPixel,TInt aLength, TUint32* aBase, TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	void GenerateLineFromCompressedSixteenBitData(TUint8* aDestBuffer, const TPoint& aPixel,TInt aLength, TUint32* aBase, TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	TDisplayMode InitialDisplayMode() const;
sl@0: 	TInt SetDisplayMode(TDisplayMode aDisplayMode, TUint32* aDataAddress);
sl@0: 	TInt DisplayModeArgCheck(TDisplayMode aDisplayMode, TUint32* aDataAddress) const;
sl@0: 	void ChangeDisplayMode( TDisplayMode aNewDisplayMode,
sl@0: 							TInt aScanLineWidthNew,
sl@0: 							TUint8* aDataAddrNew,
sl@0: 							TUint32* aDataAddress,
sl@0: 							TInt aYStart,
sl@0: 							TInt aYInc,
sl@0: 							TInt aYEnd);
sl@0: 	void UpdateBitmapProperties(TDisplayMode aNewDisplayMode);
sl@0: 	TInt SwapWidthAndHeight(TUint32* aDataAddress);	
sl@0: 	void GenerateLineFromCompressed24BitData(TUint8* aDestBuffer, const TPoint& aPixel,TInt aLength, TUint32* aBase, TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	void GenerateLineFromCompressed32UBitData(TUint8* aDestBuffer, const TPoint& aPixel,TInt aLength, TUint32* aBase, TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	void GenerateLineFromCompressed32ABitData(TUint8* aDestBuffer, const TPoint& aPixel,TInt aLength, TUint32* aBase, TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	void AdjustXCoord(TInt& aX) const;
sl@0: 	void GetLineScanPos(TLineScanningPosition& aLineScanPos, 
sl@0: 						const TCompressionBookMark*& aComprBookMark, 
sl@0: 						const TUint8* aBase) const;
sl@0: 	void UpdateBookMark(const TLineScanningPosition& aLineScanPos, 
sl@0: 						TCompressionBookMark* aComprBookMark, 
sl@0: 						const TUint8* aBase) const;
sl@0: 	void GetScanLineColor16MA(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const;
sl@0: 	void GetScanLineColor16MAP(TDes8& aBuf,const TPoint& aPixel,TInt aLength,TUint32* aScanlinePtr) const;
sl@0: 	TInt PaletteCompress();
sl@0: 	void GenerateLineFromPaletteCompressedData(TUint8* aDestBuffer, const TPoint& aPixel,TInt aLength, TUint32* aBase, TLineScanningPosition& aLineScanningPosition) const;
sl@0: 	TUint PaletteBitsPerPixel(TInt aNumColors) const;
sl@0: 	TUint PaletteBytesPerPixel(TInt aBitsPerPixel) const;
sl@0: 	void PaletteDecodeAndAssignGeneric(TUint8* aDataPtr, TUint32* aPalettePtr, TUint8*& aDestPtr, TUint aStartPixel, TUint aEndPixel, TUint aCompressedPixelsPerByte, TUint aCompressedBitsPerPixel) const;
sl@0: 	static void PaletteDecode1PixelPerByte(TUint8* aDataPtr, TUint32* aPalettePtr, TUint8*& aDestPtr, TAssignFunction aAssignFunction);
sl@0: 	static void PaletteDecode2PixelPerByte(TUint8* aDataPtr, TUint32* aPalettePtr, TUint8*& aDestPtr, TAssignFunction aAssignFunction);
sl@0: 	static void PaletteDecode4PixelPerByte(TUint8* aDataPtr, TUint32* aPalettePtr, TUint8*& aDestPtr, TAssignFunction aAssignFunction);
sl@0: 	static void PaletteDecode8PixelPerByte(TUint8* aDataPtr, TUint32* aPalettePtr, TUint8*& aDestPtr, TAssignFunction aAssignFunction);
sl@0: 	static void PaletteAssign16BitColor(TUint8*& aDestPtr, TUint32 aColor);
sl@0: 	static void PaletteAssign24BitColor(TUint8*& aDestPtr, TUint32 aColor);
sl@0: 	static void PaletteAssign32BitColor(TUint8*& aDestPtr, TUint32 aColor);
sl@0: 	void UpdatePaddingData(TUint32* aData);
sl@0: 	static void CheckHeaderIsValidL(const SEpocBitmapHeader& aHeader);
sl@0: 	static TInt CompressedFormatInfo(TDisplayMode aDispMode, TInt& aBytesPerPack, TInt& aBytesPerCompressed);
sl@0: 	static void BitmapFill32(TUint32* aDestPtr32, TInt aCount, TUint32 aValue32);
sl@0: 	static inline void BitmapFill16(TUint16* aDestPtr16, TInt aCount, TUint16 aValue16);
sl@0: private:
sl@0: 	struct TExtra
sl@0: 		{
sl@0: #ifdef SYMBIAN_DEBUG_FBS_LOCKHEAP
sl@0: 		TInt iLockCount; // number of calls to CFbsBitmap::LockHeap() not balanced by calls to CFbsBitmap::UnlockHeap()
sl@0: 		TThreadId iThreadId; // id of thread that called CFbsBitmap::LockHeap() if any
sl@0: #endif
sl@0: 		TInt64 iSerialNumber; // serial number of bitmap which is unique to the whole FBServ
sl@0: 		TInt iTouchCount; // number of calls to TouchBitmap()i.e. number of times bitmap has been changed
sl@0: 		};
sl@0: 	inline TExtra* Extra() const; // only for bitmaps created in RAM
sl@0: private:
sl@0: 	TUid iUid;
sl@0: 	struct TSettings
sl@0: 		{
sl@0: 		TSettings(TDisplayMode aDisplayMode);
sl@0: 		void SetDisplayModes(TDisplayMode aDisplayMode);
sl@0: 		void SetCurrentDisplayMode(TDisplayMode aDisplayMode);
sl@0: 		TDisplayMode CurrentDisplayMode() const;
sl@0: 		TDisplayMode InitialDisplayMode() const;
sl@0: 		inline void SetDirtyBitmap();
sl@0: 		inline TBool IsDirtyBitmap() const;
sl@0: 		inline void SetVolatileBitmap();
sl@0: 		inline TBool IsVolatileBitmap() const;
sl@0: 		enum
sl@0: 			{
sl@0: 			EBitmapFlagDirty = 0x00010000, // set in the old bitmap when a re-allocating operation has created a new bitmap
sl@0: 			EBitmapFlagVolatile = 0x00020000, // set when DataAddress() has been called but BeginDataAccess() has not
sl@0: 			};
sl@0: 		TUint32 iData;
sl@0: 		} iSettings;
sl@0: 	RHeap* iHeap;
sl@0: 	CChunkPile* iPile;
sl@0: 	TInt iByteWidth;
sl@0: 	SEpocBitmapHeader iHeader;
sl@0: 	TInt iSpare;
sl@0: 	TInt iDataOffset; // offset in bytes from "this" or from base of bitmap chunk, or hardware bitmap handle
sl@0: 	TBool iIsCompressedInRAM; //flag indicating whether CompressData has been called
sl@0: 	};
sl@0: 
sl@0: #endif