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/*
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* Copyright (c) 2004-2009 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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* Name : logicalbuffersource.h
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* Part of : ACL Logical Layer
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*
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*/
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#ifndef LOGICALBUFFERSOURCE_H
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#define LOGICALBUFFERSOURCE_H
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#include <e32base.h>
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#include <f32file.h>
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#include <a3f/a3f_trace_utils.h>
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#include <a3f/mbuffersource.h>
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#include <a3f/maudiodatasupplier.h>
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#include "audioprocessingunit.h"
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#include <a3f/maudioprocessingunitobserver.h>
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class MLogicalSettingObserver;
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/**
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*/
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NONSHARABLE_CLASS(CLogicalBufferSource) : public CAudioProcessingUnit,
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public MMMFBufferSource,
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public MMMFAudioDataSupplier
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{
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friend class CAudioContext;
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friend class CLogicalAudioStream;
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public:
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/**
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Destructor.
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Deletes all objects and releases all resource owned by this instance.
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*/
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virtual ~CLogicalBufferSource();
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// from MMMFBufferSource
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virtual TInt SetDataSupplier(MMMFAudioDataSupplier& aSupplier);
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virtual TInt BufferFilled(CMMFBuffer* aBuffer);
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virtual TInt BuffersDiscarded();
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// from CAudioProcessingUnit
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virtual TBool IsTypeOf(TUid aTypeId) const;
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virtual TAny* Interface(TUid aType);
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// from MMMFDataSupplier
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virtual void BufferToBeFilled(MMMFBufferSource* aSource, CMMFBuffer* aBuffer);
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virtual void DiscardBuffers(MMMFBufferSource* aSource);
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/**
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Create a new instance.
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@return CBufferSource* a pointer to the created instance.
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*/
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static CLogicalBufferSource* NewL(TAny* aParameters);
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private:
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void ConstructL();
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CLogicalBufferSource(TAny* aParameters);
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protected:
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// The adaptation buffer source
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MMMFBufferSource* iAdaptationBufferSource;
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private:
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// The client which provides data
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MMMFAudioDataSupplier* iSupplier;
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};
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#endif // LOGICALBUFFERSOURCE_H
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