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  @internalComponent 

    19 */

    20 

    21 #ifndef MNGICLDECODER_H

    22 

    23 #define MNGICLDECODER_H

    24 

    25 #include "InputStream.h"

    26 #include "MngReadCodec.h"

    27 

    28 class CMngIclReadStream;

    29 

    30 /**

    31 	Restricted implementation of the ICL decoder for MGN-LC format, 

    32 	doesn't support FrameCount() and decoding from a frame other than

    33 	the 1st one.

    34 */

    35 class CMngIclDecoder :	public CImageDecoderPlugin, 

    36 						protected MDataFeed,

    37 						protected MMngCodecObserver

    38 	{

    39 public:

    40  	static CMngIclDecoder* NewL();

    41 	virtual ~CMngIclDecoder();

    42 

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

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

    45 

    46 protected:

    47 // from the CImageDecoderPlugin //

    48 	virtual void InitConvertL();

    49 	virtual void DoConvert();

    50 	virtual void ScanDataL();

    51 	virtual void Cleanup();

    52 

    53 // from the MDataFeed // 

    54 	virtual TInt LockBuffer(TInt aPosition, TPtrC8& aBuffer, TInt aBytesToLock);

    55 // from the MMngCodecObserver  // 

    56 	virtual void OnCodecEvent(TCodecEvent aEventCode, TInt aErrorCode);

    57 private:

    58 	CMngIclDecoder();

    59 

    60 	// From CImageDecoderPlugin

    61 	// Called by ScanDataL.

    62 	void ReadFormatL();

    63 private:

    64 	TBool iMngSubframesNoLoops;   //Subframes with No Loops

    65 	CMngIclReadStream*	iMngIclReadStream;

    66 

    67 	enum 

    68 		{

    69 		EStateReadData		=0,	//0

    70 		EStateDataParsed,		//1

    71 		EStatePlayAnimation,	//2

    72 		EStateFrameReady,		//3

    73 		EStateImageCompleted	//4

    74 		}				iState;

    75 	TBool				iCodecEventPending;

    76 	TInt				iLatestCodecError;

    77 	};

    78 

    79 

    80 #endif // ndef MNGICLDECODER_H

    81