/*

* This component and the accompanying materials are made available

* under the terms of the License "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:

* Accenture Ltd

*

* Contributors:

*

* Description: This file is a part of sound driver for Syborg adaptation.

*

*/

#ifndef VIRTIO_IOHANDLER_H

#define VIRTIO_IOHANDLER_H

#include "virtio.h"

#include <e32def.h>

namespace VirtIo

{

class DQueue;

class DIo;

class DIoHandler : public DBase, public MIoHandler

	{

	static const TUint KMaxClients = 4;

public:

	DIoHandler( TAny* aVirtIoBase, TUint aIntNum, TDfcQue* aDfcQue );

	virtual void RegisterClient( MIoCallback* aClient )

		{

		ASSERT( iClientCount < KMaxClients );

		iClients[iClientCount++] = aClient;

		}

	virtual void UnregisterClient( MIoCallback* aClient );

	TInt Construct();

	virtual ~DIoHandler();

	virtual MQueue& Queue( TUint id );

private:	

	void ScheduleCallback();

	void WaitForCompletion();

	void Wipe();

	static TBool CheckProcessing( TAny* aSelf );

	void InstallIsr();

	void UninstallIsr();

	static void ServeIsr( TAny* aSelf );

	static void ServeDfc( TAny* aSelf );

	TBool NotifyClients( MQueue& aQueue, Token aToken, TUint aBytesTransferred );

	void InterruptHandler();

	TAny* iVirtIoBase;

	TUint iIntNum;

	TDfcQue* iDfcQue;

	TDfc iDfc;

	//managed

	DIo* iVirtIo;

	TUint iQueueCount;

	//double managed

	DQueue** iQueue;

	TUint iClientCount;	

	MIoCallback* iClients[KMaxClients];

	};

} // namespace VirtIo

#endif