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

// All rights reserved.

// This component and the accompanying materials are made available

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

// which accompanies this distribution, and is available

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

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

#ifndef __PPMCODEC_H__

#define __PPMCODEC_H__

#include <bitdev.h>

#include <icl/imagecodec.h>

#include <icl/imageprocessor.h>

#include "PPM1Convert.h"

class CPpmDecoder;

class CPluginExtensionManager;

// PPM Read codec.

class CPpmReadCodec : public CImageProcessorReadCodecExtension

	{

public:

	static CPpmReadCodec* NewL(CPpmDecoder& aDecoder);

	// From CImageReadCodec

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

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

	virtual TFrameState ProcessFrameHeaderL(TBufPtr8& aData);

	virtual ~CPpmReadCodec();

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

	void SetExtensionManager(CPluginExtensionManager* aExtensionManager);

protected:

	CPpmReadCodec(CPpmDecoder& aDecoder);

	void DoProcessCompressed();

	void DoProcessUncompressedL(TLex8& aLex);

	// from CImageReadCodec

	virtual TFrameState ProcessFrameL(TBufPtr8& aSrc);

	virtual void Complete();

	TInt ValidateDestinationSize(const TSize& aDestSize) const;

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

	void SetOperationData(const TRect& aDestinationBitmap);

protected:

	CPpmDecoder *const iDecoder;

	TSize iFrameSize;

	const TUint8* iDataPtr; // Not owned

	const TUint8* iDataPtrLimit; // Not owned

	TInt iPixelsExpected;

	TInt iPixelsProcessed;

	TFrameInfo* iFrameInfo; // Not owned

	CPluginExtensionManager* iExtensionManager; // Not owned

	TInt iNewBytePosition;

	TBool iSeekRequested;

	TPoint iCurrentPosition;

	TPoint iStartPosition;

	TPoint iEndPosition;

	TInt iXAxisIncrement;

	TInt iYAxisIncrement;

	TBool iXAxisFirst;

	};

// Write codec

class CPpm1WriteCodec : public CImageWriteCodec

	{

public:

	static CPpm1WriteCodec* NewL();

	virtual ~CPpm1WriteCodec();

	// from CImageWriteCodec

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

	virtual TFrameState ProcessFrameL(TBufPtr8& aDst);

private:

	CPpm1WriteCodec();

	void ConstructL ();

	void DoProcessL(const CFbsBitmap& aSource);

	void SwitchRGB(TDes8 &aBuf);

private:

	TUint8* iDestStartPtr;

	TUint8* iDestPtr;

	TUint8* iDestPtrLimit;

	TPoint iPos;

	TRect iSourceRect;

	};

#endif // __PPMCODEC_H__