1 // Copyright (c) 2005-2009 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 /**

    17  @file

    18  @internalTechnology 

    19 */

    20 

    21 #ifndef MNGREADCODEC_H

    22 

    23 #define MNGREADCODEC_H

    24 

    25 #include "MngPlayerObserver.h"

    26 

    27 class CMngPlayer;

    28 class CMngFileReadStream;

    29 

    30 /**

    31 	Observer for codec, allows codec to notify a client about 

    32 	particular codec event such as frame readiness, decode completion etc.

    33 */

    34 class MMngCodecObserver

    35 	{

    36 public:

    37 	enum TCodecEvent 

    38 		{

    39 		KDataParseCompleted,		// 0

    40 		KFrameReady,				// 1

    41 		KDecodeCompleted=0xFFFF,	// 0xFFFF

    42 		};

    43 public:

    44 	virtual void OnCodecEvent(TCodecEvent aEventCode, TInt aErrorCode)=0;

    45 	};

    46 	

    47 /**

    48 	Implementation of read codec for MNG-LC format, re-uses 

    49 	format "player" implementation of Image Display one

    50 */

    51 class CMngReadCodec:	public CImageMaskProcessorReadCodec,

    52 						protected MMngPlayerObserver

    53 	{

    54 public:

    55 

    56 	static CMngReadCodec * NewL(CMngFileReadStream& aMngReadStream, MMngCodecObserver& aObserver, TBool aMngSubframesNoLoops);  //Subframes with No Loops

    57 	~CMngReadCodec();

    58 

    59 	void Restart();

    60 	void DecodeL();

    61 	void StopDecode();

    62 

    63 	inline TUint ImageFeatures() const;

    64 

    65 // from the CImageReadCodec

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

    67 	virtual TFrameState ProcessFrameL(TBufPtr8& aSrc);

    68 	virtual void InitFrameHeader(TFrameInfo& aFrameSettings, CFrameImageData& /* aFrameImageData */);

    69 	virtual TInt ReducedSize(const TSize& aOriginalSize, TInt aReductionFactor, TSize& aReducedSize) const;

    70 protected:

    71 	inline CMngReadCodec(MMngCodecObserver& aObserver, TBool aMngSubframesNoLoops);   //Subframes with No Loops

    72 	void ConstructL(CMngFileReadStream& aMngReadStream);

    73 	TInt GetBitmaps();

    74 	void SendFrameUpdate(TInt aError);

    75 	void CreatePlayerL();

    76 // from the MMngPlayerObserver // 

    77 	virtual void OnDecodeEvent(TUint aEventFlags, TInt aErrorCode);

    78 

    79 private:

    80 	TBool iMngSubframesNoLoops;   //Subframes with No Loops

    81 	MMngCodecObserver&	iObserver;

    82 	TFrameInfo*			iFrameInfo;		// not owned

    83 	CFbsBitmap*			iCurrentFrame;	// not owned

    84 	CFbsBitmap*			iCurrentMask;	// not owned

    85 	CMngPlayer*			iMngPlayer;

    86 	CMngFileReadStream* iMngReadStream;

    87 	TTimeIntervalMicroSeconds32 iFrameDelay;

    88 	TUint						iFrameStatus;

    89 	TInt						iFrameNumber;

    90 	TUint						iImageFeatures;

    91 	TRect         				iFrameRect;

    92 	};

    93 

    94 inline 

    95 CMngReadCodec::CMngReadCodec(MMngCodecObserver& aObserver, TBool aMngSubframesNoLoops):iMngSubframesNoLoops(aMngSubframesNoLoops),  //Subframes with No Loops

    96 																			  iObserver(aObserver)  //Subframes with No Loops

    97 	{

    98 	}

    99 

   100 inline 

   101 TUint CMngReadCodec::ImageFeatures() const

   102 	{

   103 	return iImageFeatures;

   104 	}

   105 

   106 #endif // ndef MNGREADCODEC_H

   107 

   108