1 // Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #ifndef __PPMCODEC_H__

    17 #define __PPMCODEC_H__

    18 

    19 #include <bitdev.h>

    20 #include <icl/imagecodec.h>

    21 #include <icl/imageprocessor.h>

    22 

    23 #include "PPM1Convert.h"

    24 

    25 class CPpmDecoder;

    26 class CPluginExtensionManager;

    27 

    28 // PPM Read codec.

    29 class CPpmReadCodec : public CImageProcessorReadCodecExtension

    30 	{

    31 public:

    32 	static CPpmReadCodec* NewL(CPpmDecoder& aDecoder);

    33 	// From CImageReadCodec

    34 	virtual void InitFrameL(TFrameInfo& aFrameInfo, CFrameImageData& aFrameImageData, TBool aDisableErrorDiffusion, CFbsBitmap& aDestination, CFbsBitmap* aDestinationMask);

    35 	virtual void InitFrameHeader(TFrameInfo& aFrameInfo, CFrameImageData& aFrameData);

    36 	virtual TFrameState ProcessFrameHeaderL(TBufPtr8& aData);

    37 	virtual ~CPpmReadCodec();

    38 	virtual void GetNewDataPosition(TInt &aPosition, TInt &aLength);

    39 	

    40 	void SetExtensionManager(CPluginExtensionManager* aExtensionManager);

    41 

    42 protected:

    43 	CPpmReadCodec(CPpmDecoder& aDecoder);

    44 

    45 	void DoProcessCompressed();

    46 	void DoProcessUncompressedL(TLex8& aLex);

    47 	// from CImageReadCodec

    48 	virtual TFrameState ProcessFrameL(TBufPtr8& aSrc);

    49 	virtual void Complete();

    50 	

    51 	TInt ValidateDestinationSize(const TSize& aDestSize) const;

    52 	TInt ScalingCoefficientL(const TSize& aDestinationSize, const TSize& aFrameSize) const;

    53 	void SetOperationData(const TRect& aDestinationBitmap);

    54 	

    55 protected:

    56 	CPpmDecoder *const iDecoder;

    57 	TSize iFrameSize;

    58 	const TUint8* iDataPtr; // Not owned

    59 	const TUint8* iDataPtrLimit; // Not owned

    60 	TInt iPixelsExpected;

    61 	TInt iPixelsProcessed;

    62 	TFrameInfo* iFrameInfo; // Not owned

    63 	CPluginExtensionManager* iExtensionManager; // Not owned

    64 	

    65 	TInt iNewBytePosition;

    66 	TBool iSeekRequested;

    67 	TPoint iCurrentPosition;

    68 	TPoint iStartPosition;

    69 	TPoint iEndPosition;

    70 	TInt iXAxisIncrement;

    71 	TInt iYAxisIncrement;

    72 	TBool iXAxisFirst;

    73 	};

    74 

    75 // Write codec

    76 class CPpm1WriteCodec : public CImageWriteCodec

    77 	{

    78 public:

    79 	static CPpm1WriteCodec* NewL();

    80 	virtual ~CPpm1WriteCodec();

    81 	// from CImageWriteCodec

    82 	virtual void InitFrameL(TBufPtr8& aDst, const CFbsBitmap& aSource);

    83 	virtual TFrameState ProcessFrameL(TBufPtr8& aDst);

    84 private:

    85 	CPpm1WriteCodec();

    86 	void ConstructL ();

    87 

    88 	void DoProcessL(const CFbsBitmap& aSource);

    89 	void SwitchRGB(TDes8 &aBuf);

    90 private:

    91 	TUint8* iDestStartPtr;

    92 	TUint8* iDestPtr;

    93 	TUint8* iDestPtrLimit;

    94 	TPoint iPos;

    95 	TRect iSourceRect;

    96 	};

    97 

    98 

    99 #endif // __PPMCODEC_H__

   100