// 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);

 	}