multimediacommsengine/mmceshared/inc/mcecomavccodec.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 18 Aug 2010 10:09:50 +0300
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/*
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:    
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*
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*/
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#ifndef MCECOMAVCCODEC_H
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#define MCECOMAVCCODEC_H
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//  INCLUDES
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#include <mceavccodec.h>
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#include "mcecomvideocodec.h"
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#include "mcedefs.h"
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const TReal KMceAvcDefaultFrameRate = 15;
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const TInt  KMceAvcDefaultFrameSize = 10000;
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const TInt  KMceAvcDefaultAllowedBitrate = KMceAvcCodecProfileIdBaseline | 
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	                                       KMceAvcCodecProfileIopConstraintSet | 
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	                                       KMceAvcBitrateLevel1;
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const TInt KMceAvcAllowedBitrateRecommendedHigh = KMceAvcCodecProfileIdBaseline | 
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	                                              KMceAvcCodecProfileIopConstraintSet | 
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	                                              KMceAvcBitrateLevel1b;
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const TInt KMceAvcLevel1BitrateBps = 64000;
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const TInt KMceAvcLevel1bBitrateBps = 128000;
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const TInt KMceAvcLevel11BitrateBps = 192000;
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const TInt KMceAvcLevel12BitrateBps = 384000;
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const TInt KMceAvcLevel13BitrateBps = 768000;
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const TInt KMceAvcLevel2BitrateBps = 2000000;
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const TUint KMceAvcDefaultFrameHeight = 176;
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const TUint KMceAvcDefaultFrameWidth = 144;
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// CLASS DECLARATION
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/**
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*  Container class for the codec information.
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*
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*  @lib 
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*/
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class CMceComAvcCodec : public CMceComVideoCodec
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    {
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public:  // Constructors and destructor
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    /**
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    * Two-phased constructor.
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    * @param aSdpName sdp name
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    */
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    static CMceComAvcCodec* NewL( TBuf8<KMceMaxSdpNameLength> aSdpName );
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    /**
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    * Two-phased constructor.
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    * @param aSdpName sdp name
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    */
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    static CMceComAvcCodec* NewLC( TBuf8<KMceMaxSdpNameLength> aSdpName );
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    /**
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    * Destructor.
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    */
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    ~CMceComAvcCodec();
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public: // from CMceComCodec
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    /**
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    * Sets bitrate used with codec for encoding.
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    * @param aBitrate bitrate value for encoding
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    * @return KErrNotSupported if codec doesn't support bitrate
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    *         value issued
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    */
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    TInt SetBitrate( TUint aBitrate );
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    /**
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    * Sets bitrates allowed with codec.
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    * @param aBitrates allowed bitrate values
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    * @return KErrNotSupported if codec doesn't support bitrate
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    *         values issued
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    */
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    TInt SetAllowedBitrates( TUint aBitrates );
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    /**
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    * Returns max bit rate
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    * @return max bit rate
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    */
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    TUint GetMaxBitRate();
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    /**
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    * Sets maximum bitrate of the codec.
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    * @param aMaxBitrate value of maximum bitrate used for encoding
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    * @return KErrNotSupported if codec doesn't support bitrate
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    *         values issued
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    */
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    TInt SetMaxBitrate( TUint aMaxBitrate );
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    /**
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    * Resolve allowed bitrates based on given bitrate value.
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    * @param aBitrate
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    * @param aAllowedBitrates, on return contains allowed bitrates
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    * @return error code
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    */
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    TInt ResolveAllowedBitrates( TUint aBitrate, TUint& aAllowedBitrates );
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    /**
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    * Return ETrue, if this codec decodes rtpmap value
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    * @param aRtpmapValue rtp map
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    * @param aFmtpValue fmtp
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    * @param aIsStrictMatch, EFalse if matching is less strict
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    * @return ETrue, if this codec decodes rtpmap value
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    */
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    TBool Decodes( const TDesC8& aRtpmapValue, 
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                   const TDesC8& aFmtpValue,
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                   TBool aIsStrictMatch = ETrue );
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#ifdef MCE_COMMON_SERVER_SIDE
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    /**
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    * Used for storing fmtp proposal but the value is not set as official
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    * fmtp of the codec. Pre-check for fmtp validity
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    * @param aFmtpProposal
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    * @return ETrue if fmtp is valid
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    */
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    TBool SetFmtpProposalL( const TDesC8& aFmtpProposal );
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    /**
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    * Set fmtp
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    * @param aReset if ETrue reset fmtp, EFalse append
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    */
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    void SetFmtpFromIncomingSdpL( const TDesC8& aFmtpAttribute, 
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                                  TBool aRoleAnswerer,
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                                  TBool aReset = KMceCodecFmtpReset );
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    /**
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    * Create fmtp for outgoing sdp
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    * @return fmtp, ownership is transferred
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    */
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    HBufC8* FtmpForOutgoingSdpLC();
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private:
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    /**
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    * Removed defined parameter from input parameter and returns it
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    * @return stripped parameter if found, ownership is transferred
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    */
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    HBufC8* StripFmtpParameterL( TPtr8& aInputFmtp, const TDesC8& aStrippedParameter );
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    /**
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    * Adds parameter into fmtp. Also separators are added if needed.
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    * @return fmtp containing input fmtp and addded parameter, ownership is transferred
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    */
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    HBufC8* AddFmtpParameterL( const TDesC8& aInputFmtp, 
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                               const TDesC8& aAddedParameter, 
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                               const TDesC8& aAddedParameterVal );
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#endif
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public: // serialization etc
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    /**
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    * Clones
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    * @return clone
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    */
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    CMceComVideoCodec* CloneL();
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private:
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    /**
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    * C++ default constructor.
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    */
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    CMceComAvcCodec();
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    /**
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    * By default Symbian 2nd phase constructor is private.
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    */
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    void ConstructL( TBuf8<KMceMaxSdpNameLength> aSdpName);
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    /**
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     * second-phase copy constructor
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     */
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    void ConstructL( CMceComAvcCodec& aCodec );
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    /**
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    * Profile-level-id value from fmtp
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    */
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    TPtrC8 ParseProfileLevelId( const TDesC8& aFmtpValue );
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    /**
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    * Packetization-mode value from fmtp
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    */
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    TPtrC8 ParsePacketizationMode( const TDesC8& aFmtpValue );
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    /**
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    * Profile-level value part from fmtp
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    */
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    TPtrC8 ParseProfileLevelIdValPart( const TDesC8& aFmtpValue,
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                                       TInt aValPartOffset,
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                                       TInt aValPartLen,
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                                       const TDesC8& aDefaultVal );
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    /**
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    * Replace profile level value part of fmtp attribute.
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    */
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    TInt ReplaceProfileLevelIdValuePart( TDes8& aModifiedFmtp, 
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                                         const TDesC8& aReplacement,
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                                         TInt aValPartOffset );
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    /**
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    * Get value part of certain fmtp attribute.
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    */
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    TPtrC8 GetFmtpAttributeValuePart( const TDesC8& aFmtpValue,
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                                      const TDesC8& aFmtpAttributeName, 
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                                      TInt aValLen, 
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                                      const TDesC8& aDefaultVal );
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 public:
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    TUint8 iPacketizationMode;
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    TUint8 iAllowedPacketizationModes;   
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    };
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#endif      // MCECOMAVCCODEC_H
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// End of File