diff -r 000000000000 -r bde4ae8d615e os/mm/devsound/devsoundrefplugin/src/platsec/client/MmfAudioServerProxy.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/mm/devsound/devsoundrefplugin/src/platsec/client/MmfAudioServerProxy.cpp	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,119 @@
+// Copyright (c) 2004-2009 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:
+//
+
+#include <f32file.h>
+#include <e32math.h>
+#include <s32mem.h>
+
+#include "MmfAudioServerProxy.h"
+#include "MmfAudioServerStart.h"
+#include "MmfBase.hrh"
+#include "MmfAudioClientServer.h"
+
+#define KMaxServerNameLength 256
+
+static const TUid KUidAudioServer = {KUidMmfAudioServerDllUnicodeDefine};
+const TInt KRetries = 5; 
+const TInt KInitialTime = 100000;  //100ms
+const TInt KTimeIncrement = 50000; // 50ms 
+
+
+EXPORT_C TInt RMMFAudioServerProxy::Open()
+	{
+
+	const TUidType serverUid(KNullUid,KNullUid,KUidAudioServer);
+		
+	// Assume the server is already running and attempt to create a session
+	// 4 message slots
+	TInt err = CreateSession(KAudioServerName, TVersion(KMMFAudioServerVersion,
+														KMMFAudioServerMinorVersionNumber,
+														KMMFAudioServerBuildVersionNumber));
+	if(err == KErrNotFound)
+		{
+		// Server not running
+		// Construct the server binary name
+		TBuf<KMaxServerNameLength> serverFile;
+		RProcess server;
+
+		_LIT(KEmpty,"");
+
+		err = server.Create(KAudioServerFileName, KEmpty, serverUid);
+		if(err != KErrNone)
+			return err;
+		// Synchronise with the server
+		TRequestStatus reqStatus;
+		server.Rendezvous(reqStatus);
+		
+		if (reqStatus!=KRequestPending)
+			{
+			server.Kill(0);
+			}
+		else
+			{
+			// Start the test harness
+			server.Resume();
+			// Server will call the reciprocal static synchronise call
+			}
+		User::WaitForRequest(reqStatus); // wait for rendezvous or death
+		server.Close();
+		TInt reqStatusValue = reqStatus.Int();
+		if(reqStatusValue != KErrNone)
+			{
+			if(reqStatusValue == KErrNoMemory || reqStatusValue == KErrNotFound)
+				{
+				// All error codes except KErrNoMemory and KErrNotFound are assumed
+				// to be a duplicate server instance dying, then keep trying connection
+				// to the server. This can happen when two servers attempt to start
+				// at the same time.
+				return reqStatusValue;
+				}
+			//Wait for sometime, then retry and creation session
+			TInt waitTime = KInitialTime;
+			for(TInt retries=0;retries<KRetries;retries++)
+				{
+				User::After(waitTime);
+				waitTime+=KTimeIncrement;
+				err = CreateSession(KAudioServerName, TVersion(KMMFAudioServerVersion,
+														KMMFAudioServerMinorVersionNumber,
+														KMMFAudioServerBuildVersionNumber));
+				if(err==KErrNone)
+					{
+					//Session created successfully
+					break;
+					}	
+				}			
+			}
+		else
+			{
+			//Create the root server session
+			err = CreateSession(KAudioServerName, TVersion(KMMFAudioServerVersion,
+														KMMFAudioServerMinorVersionNumber,
+														KMMFAudioServerBuildVersionNumber));	
+			}
+		}
+	return err;		
+		
+	}
+
+EXPORT_C TInt RMMFAudioServerProxy::SetDevSoundInfo()
+	{
+	return SendReceive(EMMFAudioLaunchRequests);
+	}
+
+EXPORT_C TInt RMMFAudioServerProxy::GetDevSoundSessionHandle()
+	{
+	return SendReceive(EMMFDevSoundSessionHandle);
+	}
+