/*

* Copyright (c) 2009 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 PROFILERGENERICCLASSESUSR_H

#define PROFILERGENERICCLASSESUSR_H

#include <piprofiler/ProfilerConfig.h>

#include <piprofiler/ProfilerVersion.h>

#include <piprofiler/ProfilerGenericClassesCommon.h>

#include <piprofiler/PluginSampler.h>

#include <piprofiler/WriterPluginInterface.h>

#include <e32cmn.h>

#include <e32std.h>

#include <f32file.h>

/*

 *	

 *	Class MProfilerBufferHandlerObserver definition

 *	

 */

class MProfilerBufferHandlerObserver

	{

public:

	virtual TBapBuf* GetNextFreeBuffer() = 0;

	virtual void AddToFilledBuffers(TBapBuf* aFilledBuffer) = 0;

	};

/*

 *	

 *	Class CProfilerBufferHandler definition

 *	

 */

// forward declarations

class CProfilerSampleStream;

class CProfilerBufferHandler : public CActive

	{

public:

	static CProfilerBufferHandler* CProfilerBufferHandler::NewL(CProfilerSampleStream& aStream, RPluginSampler& aSampler);

	CProfilerBufferHandler(CProfilerSampleStream& aStream, RPluginSampler& aSampler);

	~CProfilerBufferHandler();

	void 		ConstructL();

	// for plugins to start receiving trace data

	void		StartReceivingData();

private:

	void		RunL();

	TInt        RunError(TInt aError);

	void		DoCancel();

	void        HandleEndOfStream();

public:

	TInt					iFinished;

private:

	RPluginSampler&			iSampler;

	TBapBuf*				iBufferInProcess;

	TBool					iEndOfStreamDetected;

	CProfilerSampleStream&     iObserver;

	};

/*

 *	

 *	Class CProfilerSampleStream definition

 *	

 */

class CWriterPluginInterface;

class CProfilerSampleStream : public CBase, MProfilerBufferHandlerObserver

{

public:

	static CProfilerSampleStream* CProfilerSampleStream::NewL(TInt aBufSize);

	~CProfilerSampleStream();

	void 		ConstructL();

	void 		Finalise();

	void 		EmptyBuffers();

	inline void		AddToFreeBuffers(TBapBuf* freeBuffer);

	void        SetWriter(CWriterPluginInterface& aWriter);

	// from MProfilerBufferHandlerObserver

	TBapBuf* 	GetNextFreeBuffer();

	void        AddToFilledBuffers(TBapBuf* aFilledBuffer);

	inline TBapBuf*    GetNextFilledBuffer();

	void        ResetBuffers();

	void        InitialiseBuffers();

	inline void        NotifyWriter();

private:

	CProfilerSampleStream(TInt aBufSize);

public:

    TInt					iFinished;

    CWriterPluginInterface* iWriter;

private:

    TInt					iBufferSize;

    TBapBuf*				iFreeBuffers;

    TBapBuf*                iFilledBuffers;

};

#include <piprofiler/ProfilerGenericClassesUsr.inl>

#endif