1 // Copyright (c) 2004-2009 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 EXIFTHUMBNAILGENERATOR_H

    17 #define EXIFTHUMBNAILGENERATOR_H

    18 

    19 

    20 #include <e32base.h>

    21 #include <f32file.h>

    22 #include <icl/imagecodec.h>

    23 #include <imageconversion.h>

    24 #include "JpegTypes.h"

    25 

    26 class CFbsBitmap;

    27 class CBitmapScaler;

    28 class CImageWriteCodec;

    29 class MExifSource;

    30 

    31 //class CFrameImageData;

    32 class CScaledJpegGenerator : public CActive

    33 	{

    34 public:

    35 	enum TImageToGenerate

    36 		{

    37 		EMainImage,

    38 		EThumbnail

    39 		};

    40 

    41 

    42 public:

    43 	static CScaledJpegGenerator* NewL(TRequestStatus* aNotifier, const MExifSource* aSource, 

    44 		TBool aMaintainAspectRatio = ETrue, CImageDecoder::TOptions aDecoderOptions = CImageDecoder::EOptionNone);

    45 	~CScaledJpegGenerator();

    46 	

    47 	void StartL(TSize aSize, TImageToGenerate aImageType);

    48 	HBufC8* GetJpegDataL();

    49 	HBufC8* JpegDataBufferL(const TUint aIndex);

    50 	void GetScaledImageSize(TSize &aSize);

    51 private:

    52 	CScaledJpegGenerator(TRequestStatus* aNotifier, TBool aMaintainAspectRatio, 

    53 		CImageDecoder::TOptions aDecoderOptions);

    54 	void ConstructL(const MExifSource* aSource);

    55 	

    56 	void RunL();

    57 	void DoCancel();

    58 

    59 	void GenerationCompleteL();	

    60 	TInt RunError(TInt aError);

    61 

    62 	void DoScaleBitmapL();

    63 	void DoConvertL();

    64 

    65 	void CreateJpegCodecL();

    66 	void CleanTempData();

    67 	void CleanResultData();

    68 	void CleanData();

    69 	

    70 private:

    71 	const MExifSource* iSource;

    72 	TRequestStatus* iNotifier;

    73 	TSize iSize;

    74 	TImageToGenerate iImageType;

    75 	

    76 	CFbsBitmap* iBitmap;

    77 	CImageDecoder* iImageDecoder;

    78 	CBitmapScaler* iBitmapScaler;

    79 	CImageWriteCodec* iJpegCodec;

    80 	TFrameState iFrameState;

    81 

    82 	RPointerArray<HBufC8> iJPegImage;

    83 	HBufC8* iJpegChunck;

    84 	TBufPtr8 iJpegChunckPtr;

    85 	CImageDecoder::TOptions iDecoderOptions;

    86 	enum TThumbnailGeneratorState

    87 		{

    88 		EEmpty,

    89 		EDecode,

    90 		EScale,

    91 		EConvert,

    92 		EFinished

    93 		};

    94 	TThumbnailGeneratorState iState;

    95 

    96 	RPointerArray<HBufC8> iComment;

    97 	TQTable* iLumaTable;

    98 	TQTable* iChromaTable;

    99 

   100 	TBool iMaintainAspectRatio;

   101 	};

   102 

   103 

   104 

   105 #endif 	// EXIFTHUMBNAILGENERATOR_H