multimediacommsengine/tsrc/mccstub/inc/mmcccodecilbc.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 19 Mar 2010 09:37:25 +0200
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/*
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* Copyright (c) 2004-2008 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:    Class is used for configuring G729 codec.
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*
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*/
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#ifndef __MCC_CODEC_ILBC_H__
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#define __MCC_CODEC_ILBC_H__
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//  INCLUDES
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#include "mmcccodecinformation.h"
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// CONSTANTS
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const TUint KIlbcMaxPTime30 = 180;
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// iLBC Codec possible bitrates
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const TInt KIlbcBitrate20 = 15200;
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const TInt KIlbcBitrate30 = 13330;
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// Other iLBC related constants
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const TInt KIlbcSampleRate( 8000 );
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const TInt KIlbcPTime( 30 );
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const TInt KIlbcHwFrameTime( 30 );
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const TInt KIlbcMaxPTime( 180 );
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const TInt KIlbcPTime20( 20 );
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const TInt KIlbcPTime30( 30 );
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// CLASS DECLARATION
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/**
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 *  Container class for the iLBC codec information.
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 *
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 *  @lib mmccinterface.dll
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 */
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NONSHARABLE_CLASS( CMCCCodecILBC ): public CMccCodecInformation
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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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        */
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        static CMCCCodecILBC* NewL();
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        /**
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        * Destructor.
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        */
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        virtual ~CMCCCodecILBC();
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    public:    // From CMccCodecInformation
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        /**
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        * From CMccCodecInformation
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        */
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        CMccCodecInformation* CloneDefaultsL();
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        /**
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        * From CMccCodecInformation
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        */
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        CMccCodecInformation* CloneDetailedL();
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        /**
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        * From CMccCodecInformation
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        */
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        TBool RequireSignalling( const CMccCodecInformation& aCandidate ) const; 
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        /**
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        * From MccCodecInformation. Enable / Disable Voice Activity Detection.
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        * @since    Series 60 3.0
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        * @param    aEnableVAD    Boolean indicating whether to enable Voice Activity Detection
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        * @return   KErrNotSupported if codec doesn't support VAD; otherwise KErrNone.
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        */
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        TInt EnableVAD( TBool aEnableVAD );
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        /**
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        * From MccCodecInformation. Sets bitrate used with codec.
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        * @since     Series 60 3.0
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        * @param     aBitrate     New bitrate value
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        * @return    KErrNotSupported if codec doesn't support bitrate value issued; otherwise KErrNone.
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        */
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        TInt SetBitrate( TUint aBitrate );
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        /**
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        * From MccCodecInformation. Sets the sampling frequency.
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        * @since    Series 60 3.0
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        * @param    aSamplingFreq   Sampling frequency to be used
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        * @return   KErrNotSupported if codec doesn't support sampling frequency issued; otherwise KErrNone.
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        */
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        TInt SetSamplingFreq( TUint32 aSamplingFreq );
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        /**
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        * From MccCodecInformation. Sets the sdp name.
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        * @since Series 60 3.0
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        * @param aRtpId - [input] RTP session ID
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        * @return One of the standard system-wide error codes.
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        */
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        TInt SetSdpName( const TDesC8& aSdpName );
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        /**
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        * From MccCodecInformation. Sets the payload type.
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        * @since Series 60 3.0
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        * @param aRtpId - [input] RTP session ID
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        * @return One of the standard system-wide error codes.
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        */
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        TInt SetPayloadType( TUint8 aPayloadType );
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        /**
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        * From MccCodecInformation. Sets the codec mode.
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        * @since         Series 60 3.0
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        * @param aMode   Codec mode ( e.g. ULAW/ALAW, Bandwidth efficient / octet aligned )
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        * @return        KErrNotSupported if codec doesnt' support codec mode value issued; otherwise KErrNone.
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        */
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        TInt SetCodecMode( TCodecMode aCodecMode );
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        /**
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        * Creates the fmtp string from internal values
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        * @since Series 60 3.0
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        * @return void
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        */
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        void CreateFmtpAttrListL();
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        /**
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        * Parses the fmtp attributes, and updates the internal values
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        * except the iFmtpAttr attribute
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        * @since Series 60 3.0
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        * @param aFmtp Fmtp attribute
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        * @return True if any param was updated
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        */
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        TBool ParseFmtpAttrL( const TDesC8& aFmtp );
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        /**
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        * Get the fmtp string
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        * @since Series 60 3.0
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        * @return Fmtp.
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        */
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        TDesC8& GetFmtpL( );
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        /**
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        * From MccCodecInformation. Sets max packet time.
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        * @since    Series 60 3.0
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        * @param aMaxPTime Maximum PacketTime
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        * @return One of the standard system-wide error codes.
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        */
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        TInt SetMaxPTime( TUint aMaxPTime );
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        /**
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        * From MccCodecInformation. Sets the packet time.
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        * @since    Series 60 3.0
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        * @param aPTime PacketTime.
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        * @return One of the standard system-wide error codes.
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        */
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        TInt SetPTime( TUint aPTime );
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        /**
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        * Enable / Disable Comfort noise generation.
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        * @param aComfortNoisePT Payloadtype value indicating what
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        *        payload type should be used for comfort noise.
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        *        KPayloadTypeUndefined can be used to turn comfor noise
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        *        generation off.
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        * @return One of the standard system-wide error codes.
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        */
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        TInt SetComfortNoiseGeneration( TUint8 aComfortNoisePT );
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        /**
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        * Set Allowed BitRate
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        * @since    Series 60 3.0
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        * @param    aBitRateMask
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        *                       
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        * @return   Etrue, if Mask is valid
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        */
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        TInt SetAllowedBitrates( TUint aBitrateMask );
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    private:
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        /**
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        * C++ default constructor.
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        */
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        CMCCCodecILBC();
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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();
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        /**
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        * Adjust codec.
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        */
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        void AdjustCodec();
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    public:     // Data
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    protected:  // Data
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    private:    // Data
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    public:     // Friend classes
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    protected:  // Friend classes
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    private:    // Friend classes
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    };
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#endif      //__MCC_CODEC_ILBC_H__
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// End of File