/*

* Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#ifndef BUFFERSOURCE_H

#define BUFFERSOURCE_H

#include <e32base.h>

#include <f32file.h>

#include <a3f/mbuffersource.h>

#include "moutputport.h"

#include "mstreambuffercontrol.h"

#include <a3f/a3f_trace_utils.h>

/////

 // This is the implementation of CAudioSource API.

 //

 // @see CAudioComponent.

 ///

NONSHARABLE_CLASS(CBufferSource) : 	public CActive,

									public MMMFBufferSource,		// A3F interface

									public MOutputPort			// Adaptation interface

	{

public:

	IMPORT_C static CBufferSource* NewL();

	/////

	// Destructor.

	//

	// Deletes all objects and releases all resource owned by this instance.

	///

	virtual ~CBufferSource();

	// from MMMFBufferSource

	TInt SetDataSupplier(MMMFAudioDataSupplier& aSupplier);

	TInt BufferFilled(CMMFBuffer* aBuffer);

	TInt BuffersDiscarded();

	// from class MOutputPort

	TInt GetOutputPort(MOutputPort*& aOutputPort);

	TInt FillBuffer(CMMFBuffer* aBuffer, MInputPort* aConsumer);

	TInt BufferEmptied(CMMFBuffer* aBuffer);

	TInt SetInput(MInputPort* aInput);

	TInt RemoveInput(MInputPort* aInput);

	TInt FlushBuffer(MFlushHandlerObserver* aFlushObserver);

private:

	void ConstructL();

	CBufferSource();

	void DoCancel();

	void RunL();

private:

	MFlushHandlerObserver* iObserver;

	MMMFAudioDataSupplier* iSupplier;

	MInputPort* iInput;

	CMMFBuffer* iBuffer;

	};

#endif // BUFFERSOURCE_H