// 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 __PPM2CODEC_H__

#define __PPM2CODEC_H__

#include <bitdev.h>

#include <icl/imageprocessor.h>

#include <icl/imagecodec.h>

#include "PPM2Convert.h"

class CPpmDecoder;

// PPM Read codec.

class CPpmReadCodec : public CImageProcessorReadCodec

	{

public:

	static CPpmReadCodec* NewL(CPpmDecoder& aDecoder);

	void ProcessFrameL();

	void ResetFrameL(TFrameInfo& aFrameInfo, CFbsBitmap& aFrame);

	// 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);

	void Complete();

	virtual ~CPpmReadCodec();

protected:

	CPpmReadCodec(CPpmDecoder& aDecoder);

	void DoProcessCompressedL();

	void DoProcessUncompressedL();

	TBool ShouldAbort() const;

private:

	// from CImageProcessorReadCodec

	TFrameState ProcessFrameL(TBufPtr8& aSrc);

protected:

	CPpmDecoder *const iDecoder;

	TSize iFrameSize;

	const TUint8* iDataPtr; // Not owned

	const TUint8* iDataPtrLimit; // Not owned

	TInt iPixelsExpected;

#if defined(__CONTINUE_CONVERT)

	TInt iMarkedPosition;

	TInt iPixelsProcessed;

#endif // defined(__CONTINUE_CONVERT)

	TFrameInfo* iFrameInfo; // Not owned

	};

// Write codec

class CPpm2WriteCodec : public CImageWriteCodec

	{

public:

	static CPpm2WriteCodec* NewL(CPpmEncoder* aEncoder);

	virtual ~CPpm2WriteCodec();

	void DoProcessL(const CFbsBitmap& aSource);

	// from CImageWriteCodec

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

	virtual TFrameState ProcessFrameL(TBufPtr8& aDst);

private:

	CPpm2WriteCodec(CPpmEncoder* aEncoder);

	void ConstructL ();

	TBool ShouldAbort() const;

	void AppendDataL(const TDesC8& aData);

	void SwitchRGB(TDes8 &aBuf);

private:

	TRect iSourceRect;

	TPoint iPos;

	CPpmEncoder* iEncoder; // not linked

	};

#include "PPM2Codec.inl"

#endif // __PPM2CODEC_H__