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 __PPM2CODEC_H__

    17 #define __PPM2CODEC_H__

    18 

    19 #include <bitdev.h>

    20 #include <icl/imageprocessor.h>

    21 #include <icl/imagecodec.h>

    22 

    23 #include "PPM2Convert.h"

    24 

    25 class CPpmDecoder;

    26 

    27 // PPM Read codec.

    28 class CPpmReadCodec : public CImageProcessorReadCodec

    29 	{

    30 public:

    31 	static CPpmReadCodec* NewL(CPpmDecoder& aDecoder);

    32 	void ProcessFrameL();

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

    34 	// From CImageReadCodec

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

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

    37 	virtual TFrameState ProcessFrameHeaderL(TBufPtr8& aData);

    38 	void Complete();

    39 

    40 	virtual ~CPpmReadCodec();

    41 protected:

    42 	CPpmReadCodec(CPpmDecoder& aDecoder);

    43 	void DoProcessCompressedL();

    44 	void DoProcessUncompressedL();

    45 	TBool ShouldAbort() const;

    46 

    47 private:

    48 	// from CImageProcessorReadCodec

    49 	TFrameState ProcessFrameL(TBufPtr8& aSrc);

    50 protected:

    51 	CPpmDecoder *const iDecoder;

    52 	TSize iFrameSize;

    53 	const TUint8* iDataPtr; // Not owned

    54 	const TUint8* iDataPtrLimit; // Not owned

    55 	TInt iPixelsExpected;

    56 #if defined(__CONTINUE_CONVERT)

    57 	TInt iMarkedPosition;

    58 	TInt iPixelsProcessed;

    59 #endif // defined(__CONTINUE_CONVERT)

    60 	TFrameInfo* iFrameInfo; // Not owned

    61 	};

    62 

    63 // Write codec

    64 class CPpm2WriteCodec : public CImageWriteCodec

    65 	{

    66 public:

    67 	static CPpm2WriteCodec* NewL(CPpmEncoder* aEncoder);

    68 	virtual ~CPpm2WriteCodec();

    69 

    70 	void DoProcessL(const CFbsBitmap& aSource);

    71 

    72 	// from CImageWriteCodec

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

    74 	virtual TFrameState ProcessFrameL(TBufPtr8& aDst);

    75 private:

    76 	CPpm2WriteCodec(CPpmEncoder* aEncoder);

    77 	void ConstructL ();

    78 

    79 	TBool ShouldAbort() const;

    80 	void AppendDataL(const TDesC8& aData);

    81 	void SwitchRGB(TDes8 &aBuf);

    82 private:

    83 	TRect iSourceRect;

    84 	TPoint iPos;

    85 

    86 	CPpmEncoder* iEncoder; // not linked

    87 	};

    88 

    89 #include "PPM2Codec.inl"

    90 

    91 #endif // __PPM2CODEC_H__

    92