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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 MCEMESSAGECODEC_H
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#define MCEMESSAGECODEC_H
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// INCLUDES
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#include <e32base.h>
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#include <mcedefs.h>
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#include <mcecodec.h>
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// FORWARD DECLARATIONS
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class RReadStream;
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class RWriteStream;
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class CMceComMessageCodec;
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class CMceMediaStream;
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class TMceIds;
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class TMceEvent;
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class TMceMediaId;
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class TMceFactory;
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class TMceTextCodecFactory;
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class CMceCommessageCodec;
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// CLASS DECLARATION
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/**
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* Container class for message codecs.
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*
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* @lib mceclient.lib
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*/
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class CMceMessageCodec : public CMceCodec
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{
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public: // Constructors and destructor
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/**
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* Destructor.
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*/
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virtual ~CMceMessageCodec();
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public: // New functions
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/**
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* Enable / Disable Voice Activity Detection.
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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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virtual TInt EnableVAD(TBool aEnableVAD) = 0;
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/**
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* Sets the sampling frequency.
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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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virtual TInt SetSamplingFreq(TUint aSamplingFreq) = 0;
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/**
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* Sets the packetization rate.
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* @param aPTime, Packetization rate, must be multiple of audio frame size.
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* @return KErrNotSupported if codec doesn't support packetrate value issued; otherwise KErrNone.
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*/
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virtual TInt SetPTime(TUint aPTime) = 0;
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/**
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* Sets the maximum packetization rate.
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* @param aMaxPTime, maximum allowed packetization rate, must be multiple of audio frame size.
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* @return KErrNotSupported if codec doesn't support packetrate value issued; otherwise KErrNone.
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*/
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virtual TInt SetMaxPTime(TUint aMaxPTime) = 0;
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/**
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* Clones codec, ownership is transferred.
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* @return cloned codec
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*/
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virtual CMceMessageCodec* CloneL() const = 0;
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/**
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* Gets sampling frequency used currently.
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* @return Sampling frequency
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*/
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virtual TUint SamplingFreq() const;
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/**
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* Get VAD status.
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* @return Boolean indicating is VAD activated
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*/
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virtual TBool VAD() const;
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/**
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* Gets the packetization rate.
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* @return packetization rate.
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*/
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virtual TUint PTime() const;
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/**
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* Gets max packetization rate.
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* @return Max packetization rate.
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*/
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virtual TUint MaxPTime() const;
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public:
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/**
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* Initializes
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* @param aParent the parent
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*/
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virtual void InitializeL( CMceMediaStream& aParent );
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/**
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* Factory
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* @return factory
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*/
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//static TMceMessageCodecFactory Factory();
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protected: // New functions
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/**
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* C++ default constructor.
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*/
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CMceMessageCodec();
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/**
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* second-phase constructor
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* @paramaFlatData flat data container
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* @param aType type of sink
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*/
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void ConstructL( CMceComMessageCodec* aFlatData );
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//for testing
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MCE_UNIT_TEST_DEFS
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};
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#endif
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// End of File
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