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 __PNGCONVERT_H__

    17 #define __PNGCONVERT_H__

    18 

    19 #include <icl/imageplugin.h>

    20 #include "PNGCodec.h"

    21 

    22 /** @file

    23 	@internalComponent */

    24 

    25 class MPngDecoder 

    26 	{

    27 public:

    28 	virtual void GoToProcessDataState()=0;

    29 	};

    30 

    31 // Decoder.

    32 class CPngReadCodec;

    33 class CPngDecoder : public CImageDecoderPlugin, public MPngDecoder

    34 	{

    35 public:

    36 	enum TDecodeState

    37 		{

    38 		EStateStart,

    39 		EStateNormalProcess,

    40 		EStateDataProcess

    41 		};

    42 public:

    43 	CPngDecoder();

    44 

    45  	static CPngDecoder* NewL();

    46 	virtual ~CPngDecoder();

    47 

    48 	virtual void ImageType(TInt aFrameNumber, TUid& aImageType, TUid& aImageSubType) const;

    49 	CFrameInfoStrings* FrameInfoStringsL(RFs& aFs, TInt aFrameNumber);

    50 

    51 	void GoToProcessDataState();

    52 

    53 private:

    54 	// From CImageDecoderPlugin

    55 	void ReadFormatL();

    56 	void ScanDataL();

    57 	void DoConvert();

    58 	void InitConvertL();

    59 	void NotifyComplete();

    60 

    61 	TDecodeState iState;

    62 	};

    63 

    64 // CPngEncoder

    65 class CPngEncoder : public CImageEncoderPlugin

    66 	{

    67 private:

    68 	enum TEncodeState

    69 		{

    70 		EStateNormalProcess,

    71 		EStateDataProcess

    72 		};

    73 public:

    74 	static CPngEncoder* NewL();

    75 	virtual ~CPngEncoder();

    76 	void GoToProcessDataState();

    77 protected:

    78 	// from CImageEncoderPlugin

    79 	void PrepareEncoderL(const CFrameImageData* aFrameImageData);

    80 	void DoConvert();

    81 	void UpdateHeaderL();

    82 	void InitConvertL();

    83 	void NotifyComplete();

    84 private:

    85 	CPngEncoder();

    86 private:

    87 	TEncodeState iState;

    88 	};

    89 #endif // __PNGCONVERT_H__