--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/baseport/syborg/soundsc/virtio_iohandler.h	Thu Mar 04 00:55:21 2010 +0000
@@ -0,0 +1,93 @@
+/*
+* 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