sl@0: /*
sl@0: * Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description:
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: #ifndef BUFFERSOURCE_H
sl@0: #define BUFFERSOURCE_H
sl@0: 
sl@0: #include <e32base.h>
sl@0: #include <f32file.h>
sl@0: #include <a3f/mbuffersource.h>
sl@0: 
sl@0: #include "moutputport.h"
sl@0: #include "mstreambuffercontrol.h"
sl@0: 
sl@0: #include <a3f/a3f_trace_utils.h>
sl@0: 
sl@0: 
sl@0: /////
sl@0:  // This is the implementation of CAudioSource API.
sl@0:  //
sl@0:  // @see CAudioComponent.
sl@0:  ///
sl@0: NONSHARABLE_CLASS(CBufferSource) : 	public CActive,
sl@0: 									public MMMFBufferSource,		// A3F interface
sl@0: 									public MOutputPort			// Adaptation interface
sl@0: 
sl@0: 	{
sl@0: public:
sl@0: 
sl@0: 	IMPORT_C static CBufferSource* NewL();
sl@0: 	/////
sl@0: 	// Destructor.
sl@0: 	//
sl@0: 	// Deletes all objects and releases all resource owned by this instance.
sl@0: 	///
sl@0: 	virtual ~CBufferSource();
sl@0: 
sl@0: 	// from MMMFBufferSource
sl@0: 	TInt SetDataSupplier(MMMFAudioDataSupplier& aSupplier);
sl@0: 	TInt BufferFilled(CMMFBuffer* aBuffer);
sl@0: 	TInt BuffersDiscarded();
sl@0: 
sl@0: 	// from class MOutputPort
sl@0: 	TInt GetOutputPort(MOutputPort*& aOutputPort);
sl@0: 	TInt FillBuffer(CMMFBuffer* aBuffer, MInputPort* aConsumer);
sl@0: 	TInt BufferEmptied(CMMFBuffer* aBuffer);
sl@0: 	TInt SetInput(MInputPort* aInput);
sl@0: 	TInt RemoveInput(MInputPort* aInput);
sl@0: 	TInt FlushBuffer(MFlushHandlerObserver* aFlushObserver);
sl@0: private:
sl@0: 
sl@0: 	void ConstructL();
sl@0: 
sl@0: 	CBufferSource();
sl@0: 
sl@0: 	void DoCancel();
sl@0: 
sl@0: 	void RunL();
sl@0: 
sl@0: private:
sl@0: 	MFlushHandlerObserver* iObserver;
sl@0: 
sl@0: 	MMMFAudioDataSupplier* iSupplier;
sl@0: 
sl@0: 	MInputPort* iInput;
sl@0: 
sl@0: 	CMMFBuffer* iBuffer;
sl@0: 	};
sl@0: 
sl@0: #endif // BUFFERSOURCE_H