devsound/a3fdevsound/src/mmfaudioserver/mmfaudioserver.cpp
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     1 //mmfaudioserver.cpp
       
     2 
       
     3 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 // All rights reserved.
       
     5 // This component and the accompanying materials are made available
       
     6 // under the terms of "Eclipse Public License v1.0"
       
     7 // which accompanies this distribution, and is available
       
     8 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     9 //
       
    10 // Initial Contributors:
       
    11 // Nokia Corporation - initial contribution.
       
    12 //
       
    13 // Contributors:
       
    14 //
       
    15 // Description:
       
    16 // Portions Copyright Nokia-Symbian * Nokia Core OS *
       
    17 // INCLUDE FILES
       
    18 //
       
    19 
       
    20 #include <e32math.h>
       
    21 #include <mmf/common/mmfbase.hrh>
       
    22 
       
    23 #include "mmfaudioserver.h"
       
    24 #include "mmfaudioserverdecs.h"
       
    25 #include "mmfdevsoundsession.h"
       
    26 #include "mmfaudioserversession.h"
       
    27 #include "mmfdevsoundserver.h"
       
    28 #include "mmfdevsoundserverstart.h"
       
    29 #include "mmfaudioserverfactory.h"
       
    30 #include "devsoundsvrthreadpriorityconsts.h"
       
    31 
       
    32 #ifdef _DEBUG
       
    33 #include "e32debug.h"
       
    34 #define SYMBIAN_DEBPRN0(str)    RDebug::Print(str, this)
       
    35 #else
       
    36 #define SYMBIAN_DEBPRN0(str)
       
    37 #endif //_DEBUG
       
    38 
       
    39 
       
    40 // Time delay that the audio server wait before shutdown itself when is detected that the last DevSoundSession is closed
       
    41 const TInt KAudioServerShutDownDelay = 50000000; //50 sec
       
    42 
       
    43 // ======== LOCAL FUNCTIONS ========
       
    44 
       
    45 void Panic(TInt aPanicCode)
       
    46 	{
       
    47 	_LIT(KAudioServerPanicCategory, "mmfaudioserver");
       
    48 	User::Panic(KAudioServerPanicCategory, aPanicCode);
       
    49 	}
       
    50 
       
    51 // ============================ MEMBER FUNCTIONS ===============================
       
    52 
       
    53 // -----------------------------------------------------------------------------
       
    54 // CMMFAudioServer::NewL
       
    55 // Two-phased constructor.
       
    56 // -----------------------------------------------------------------------------
       
    57 //
       
    58 CMMFAudioServer* CMMFAudioServer::NewL()
       
    59 	{
       
    60 	CMMFAudioServer* self = new(ELeave) CMMFAudioServer();
       
    61 	CleanupStack::PushL(self);
       
    62 	self->ConstructL();
       
    63 	CleanupStack::Pop(self);
       
    64 	return self;
       
    65 	}
       
    66 
       
    67 // -----------------------------------------------------------------------------
       
    68 // CMMFAudioServer::CMMFAudioServer
       
    69 // C++ default constructor can NOT contain any code, that
       
    70 // might leave.
       
    71 // -----------------------------------------------------------------------------
       
    72 //
       
    73 CMMFAudioServer::CMMFAudioServer()
       
    74 	: CMmfIpcServer(EPriorityStandard)
       
    75 	{
       
    76 	}
       
    77 
       
    78 // -----------------------------------------------------------------------------
       
    79 // CMMFAudioServer::ConstructL
       
    80 // Symbian 2nd phase constructor can leave.
       
    81 // -----------------------------------------------------------------------------
       
    82 //
       
    83 void CMMFAudioServer::ConstructL()
       
    84 	{
       
    85 	SYMBIAN_DEBPRN0(_L("CMMFAudioServer[0x%x]::ConstructL - enter"));
       
    86 
       
    87 	SetPinClientDescriptors(ETrue);
       
    88 	// Call base class to Start server
       
    89 	StartL(KAudioServerName);
       
    90 
       
    91 	iFourCCConvertor = CFourCCConvertor::NewL();
       
    92 	iDelayAudioServerShutDown = CDelayAudioServerShutDown::NewL();
       
    93 
       
    94 	iFactory = CMMFAudioServerFactory::NewL();
       
    95 	iFactory->StartL(*this);	
       
    96 
       
    97 	SYMBIAN_DEBPRN0(_L("CMMFAudioServer[0x%x]::ConstructL - exit"));
       
    98 	}
       
    99 
       
   100 // -----------------------------------------------------------------------------
       
   101 // CMMFAudioServer::~CMMFAudioServer
       
   102 // Destructor
       
   103 // -----------------------------------------------------------------------------
       
   104 //
       
   105 CMMFAudioServer::~CMMFAudioServer()
       
   106 	{
       
   107 	if (iDelayAudioServerShutDown)
       
   108 		{
       
   109 		iDelayAudioServerShutDown->Cancel();
       
   110 		delete iDelayAudioServerShutDown;
       
   111 		iDelayAudioServerShutDown = NULL;
       
   112 		}
       
   113 
       
   114 	for(TInt i=(iDevSoundServList.Count()-1); i >=0 ; i--)
       
   115 		{
       
   116 		CStartAndMonitorDevSoundThread* devSoundMonitorThread = iDevSoundServList[i];
       
   117 		iDevSoundServList.Remove(i);
       
   118 		delete devSoundMonitorThread;
       
   119 		}
       
   120 	iDevSoundServList.Close();
       
   121 	delete iFourCCConvertor;
       
   122 	if (iFactory)
       
   123 		{
       
   124 		iFactory->Stop(*this);
       
   125 		delete iFactory;
       
   126 		}
       
   127 	}
       
   128 
       
   129 // -----------------------------------------------------------------------------
       
   130 // CMMFAudioServer::NewSessionL
       
   131 // Creates a new session to handle requests by the client and returns it to the
       
   132 // client server framework.
       
   133 // -----------------------------------------------------------------------------
       
   134 //
       
   135 CMmfIpcSession* CMMFAudioServer::NewSessionL(const TVersion& aVersion) const
       
   136 	{
       
   137 	SYMBIAN_DEBPRN0(_L("CMMFAudioServer[0x%x]::NewSessionL - enter"));
       
   138 	
       
   139 	TVersion v(KMMFAudioServerVersion,
       
   140 			KMMFAudioServerMinorVersionNumber,
       
   141 			KMMFAudioServerBuildVersionNumber);
       
   142 	if(!User::QueryVersionSupported(v, aVersion))
       
   143 		{
       
   144 		User::Leave(KErrNotSupported);
       
   145 		}
       
   146 	
       
   147 	for(TInt i=(iDevSoundServList.Count()-1); i >=0 ; i--)
       
   148 		{
       
   149 		CStartAndMonitorDevSoundThread* devSoundMonitorThread = iDevSoundServList[i];
       
   150 
       
   151 		if(!devSoundMonitorThread->IsActive())
       
   152 			{
       
   153 			iDevSoundServList.Remove(i);
       
   154 			delete devSoundMonitorThread;
       
   155 			}
       
   156 		iDevSoundServList.Compress();
       
   157 		}
       
   158 
       
   159 	RMMFDevSoundServerProxy devSoundSessionHandle;
       
   160 	User::LeaveIfError(StartDevSoundServer(devSoundSessionHandle));
       
   161 	CMMFAudioServerSession* audioServerSession = CMMFAudioServerSession::NewL(devSoundSessionHandle);
       
   162 	SYMBIAN_DEBPRN0(_L("CMMFAudioServer[0x%x]::NewSessionL - session created"));
       
   163 	return audioServerSession;
       
   164 	}
       
   165 
       
   166 // -----------------------------------------------------------------------------
       
   167 // CMMFAudioServer::IncrementSessionId
       
   168 // Increment the session Id.
       
   169 // -----------------------------------------------------------------------------
       
   170 //
       
   171 void CMMFAudioServer::IncrementSessionId()
       
   172 	{
       
   173 	iAudioServerSessionId++;
       
   174 	}
       
   175 
       
   176 // -----------------------------------------------------------------------------
       
   177 // CMMFAudioServer::DecrementSessionId
       
   178 // Decrement the session Id.
       
   179 // -----------------------------------------------------------------------------
       
   180 //
       
   181 void CMMFAudioServer::DecrementSessionId()
       
   182 	{
       
   183 	iAudioServerSessionId--;
       
   184 	}
       
   185 
       
   186 // -----------------------------------------------------------------------------
       
   187 // CMMFAudioServer::IncrementDevSoundCount
       
   188 // Increment the DevSound server counter. If there is atleast one DevSound
       
   189 // server, it will cancel its shutdown timer.
       
   190 // -----------------------------------------------------------------------------
       
   191 //
       
   192 void CMMFAudioServer::IncrementDevSoundCount()
       
   193 	{
       
   194 	iDevSoundCount++;
       
   195 	//in the case we started the shutdown due to no more DevSound
       
   196 	if(iDevSoundCount)
       
   197 		{
       
   198 		ASSERT(iDelayAudioServerShutDown);
       
   199 		if (iDelayAudioServerShutDown)
       
   200 			{
       
   201 			iDelayAudioServerShutDown->Cancel();
       
   202 			}
       
   203 		}
       
   204 	}
       
   205 
       
   206 // -----------------------------------------------------------------------------
       
   207 // CMMFAudioServer::DecrementDevSoundCount
       
   208 // Decrement the DevSound server counter. Once the number of DevSound server's
       
   209 // instances becomes zero, Audio Server will start its shutdown routine.
       
   210 // -----------------------------------------------------------------------------
       
   211 //
       
   212 void CMMFAudioServer::DecrementDevSoundCount()
       
   213 	{
       
   214 	iDevSoundCount--;
       
   215 	if (iDevSoundCount == 0)
       
   216 		{
       
   217 		ASSERT(iDelayAudioServerShutDown);
       
   218 		if (iDelayAudioServerShutDown)
       
   219 			{
       
   220 			iDelayAudioServerShutDown->SetDelay(TTimeIntervalMicroSeconds32(KAudioServerShutDownDelay));
       
   221 			}
       
   222 		}
       
   223 	}
       
   224 
       
   225 // -----------------------------------------------------------------------------
       
   226 // CMMFAudioServer::SendEventToClient
       
   227 // Sends Event to DevSound client.
       
   228 // -----------------------------------------------------------------------------
       
   229 //
       
   230 void CMMFAudioServer::SendEventToClient(TInt aSessionToAlert, TInt /*aSessionToBeLaunched*/)
       
   231 	{
       
   232 	// For the session requested, send event to client
       
   233 	iSessionIter.SetToFirst();
       
   234 	CMMFAudioServerSession* session = static_cast<CMMFAudioServerSession*>(iSessionIter++);
       
   235 	while (session)
       
   236 		{
       
   237 		if (session->AudioServerSessionId() == aSessionToAlert)
       
   238 			{
       
   239 			break;  // Finished
       
   240 			}
       
   241 
       
   242 		session = static_cast<CMMFAudioServerSession*>(iSessionIter++);
       
   243 		}
       
   244 	}
       
   245 
       
   246 // -----------------------------------------------------------------------------
       
   247 // CMMFAudioServer::LaunchRequest
       
   248 // Launches the DevSound servers waiting for Audio Policy.
       
   249 // -----------------------------------------------------------------------------
       
   250 //
       
   251 void CMMFAudioServer::LaunchRequest(TInt aSessionId)
       
   252 	{
       
   253 	iSessionIter.SetToFirst();
       
   254 	CMMFAudioServerSession* session = static_cast<CMMFAudioServerSession*>(iSessionIter++);
       
   255 
       
   256 	while (session)
       
   257 		{
       
   258 		if (session->AudioServerSessionId() == aSessionId)
       
   259 			{
       
   260 			break;  // Finished
       
   261 			}
       
   262 		session = static_cast<CMMFAudioServerSession*>(iSessionIter++);
       
   263 		}
       
   264 	}
       
   265 
       
   266 // -----------------------------------------------------------------------------
       
   267 // CMMFAudioServer::StartDevSoundServer
       
   268 // Starts a new DevSound server instance.
       
   269 // -----------------------------------------------------------------------------
       
   270 //
       
   271 TInt CMMFAudioServer::StartDevSoundServer(RMMFDevSoundServerProxy& aDevSoundSessionHandle) const
       
   272 	{
       
   273 	SYMBIAN_DEBPRN0(_L("CMMFAudioServer[0x%x]::StartDevSoundServer - enter"));
       
   274 
       
   275 	RMessage2 message(Message());
       
   276 	CStartAndMonitorDevSoundThread* monitorDevSound = NULL;
       
   277 
       
   278 	TRAPD(err, monitorDevSound = CStartAndMonitorDevSoundThread::NewL(const_cast<CMMFAudioServer*>(this)));
       
   279 	if(err != KErrNone)
       
   280 		{
       
   281 		delete monitorDevSound;
       
   282 		return err;
       
   283 		}
       
   284 
       
   285 	err = iDevSoundServList.Append(monitorDevSound);
       
   286 	if(err != KErrNone)
       
   287 		{
       
   288 		delete monitorDevSound;
       
   289 		return err;
       
   290 		}
       
   291 	
       
   292 	SYMBIAN_DEBPRN0(_L("CMMFAudioServer[0x%x]::StartDevSoundServer - exit"));
       
   293 	return monitorDevSound->StartDevSoundServer(message, aDevSoundSessionHandle);
       
   294 
       
   295 	}
       
   296 
       
   297 // -----------------------------------------------------------------------------
       
   298 // CMMFAudioServer::CDelayAudioServerShutDown::NewL
       
   299 // Two-phased constructor.
       
   300 // -----------------------------------------------------------------------------
       
   301 //
       
   302 CMMFAudioServer::CDelayAudioServerShutDown*
       
   303 CMMFAudioServer::CDelayAudioServerShutDown::NewL()
       
   304 	{
       
   305 	CDelayAudioServerShutDown* self = new(ELeave) CDelayAudioServerShutDown;
       
   306 	CleanupStack::PushL(self);
       
   307 	self->ConstructL();
       
   308 	CleanupStack::Pop(self);
       
   309 	return self;
       
   310 	}
       
   311 
       
   312 // -----------------------------------------------------------------------------
       
   313 // Constructor.
       
   314 // -----------------------------------------------------------------------------
       
   315 //
       
   316 CMMFAudioServer::CDelayAudioServerShutDown::CDelayAudioServerShutDown()
       
   317 	: CActive(0)
       
   318 	{
       
   319 	}
       
   320 
       
   321 // -----------------------------------------------------------------------------
       
   322 // CMMFAudioServer::CDelayAudioServerShutDown::ConstructL
       
   323 // -----------------------------------------------------------------------------
       
   324 //
       
   325 void CMMFAudioServer::CDelayAudioServerShutDown::ConstructL()
       
   326 	{
       
   327 	User::LeaveIfError(iShutDownTimer.CreateLocal());
       
   328 	CActiveScheduler::Add(this);
       
   329 	}
       
   330 
       
   331 // -----------------------------------------------------------------------------
       
   332 // CMMFAudioServer::CDelayAudioServerShutDown::~CDelayAudioServerShutDown
       
   333 // -----------------------------------------------------------------------------
       
   334 //
       
   335 CMMFAudioServer::CDelayAudioServerShutDown::~CDelayAudioServerShutDown()
       
   336 	{
       
   337 	Cancel();
       
   338 	iShutDownTimer.Close();
       
   339 	}
       
   340 
       
   341 // -----------------------------------------------------------------------------
       
   342 // CMMFAudioServer::CDelayAudioServerShutDown::SetDelay
       
   343 // Request a timeout after aDelay
       
   344 // -----------------------------------------------------------------------------
       
   345 //
       
   346 void CMMFAudioServer::CDelayAudioServerShutDown::SetDelay(
       
   347 	TTimeIntervalMicroSeconds32 aDelay)
       
   348 	{
       
   349 	__ASSERT_ALWAYS(!IsActive(), Panic(EMMFAudioServerIsActive));
       
   350 	iShutDownTimer.After(iStatus, aDelay);
       
   351 	SetActive();
       
   352 	}
       
   353 
       
   354 // -----------------------------------------------------------------------------
       
   355 // CMMFAudioServer::CDelayAudioServerShutDown::RunL
       
   356 // Called by Active object framework when timer times out.
       
   357 // -----------------------------------------------------------------------------
       
   358 //
       
   359 void CMMFAudioServer::CDelayAudioServerShutDown::RunL()
       
   360 	{
       
   361 	CActiveScheduler::Stop();
       
   362 	}
       
   363 
       
   364 // -----------------------------------------------------------------------------
       
   365 // CMMFAudioServer::CDelayAudioServerShutDown::DoCancel
       
   366 // Called by the Active object framework when user cancels active object.
       
   367 // -----------------------------------------------------------------------------
       
   368 //
       
   369 void CMMFAudioServer::CDelayAudioServerShutDown::DoCancel()
       
   370 	{
       
   371 	iShutDownTimer.Cancel();
       
   372 	}
       
   373 
       
   374 // -----------------------------------------------------------------------------
       
   375 // CStartAndMonitorDevSoundThread::NewL
       
   376 // -----------------------------------------------------------------------------
       
   377 //
       
   378 CStartAndMonitorDevSoundThread* CStartAndMonitorDevSoundThread::NewL(
       
   379 	CMMFAudioServer* aAudioServer)
       
   380 	{
       
   381 	CStartAndMonitorDevSoundThread* self = new(ELeave) CStartAndMonitorDevSoundThread(aAudioServer);
       
   382 	CleanupStack::PushL(self);
       
   383 	self->ConstructL();
       
   384 	CleanupStack::Pop(self);
       
   385 	return self;
       
   386 	}
       
   387 
       
   388 // -----------------------------------------------------------------------------
       
   389 // CStartAndMonitorDevSoundThread::ConstructL
       
   390 // -----------------------------------------------------------------------------
       
   391 //
       
   392 void CStartAndMonitorDevSoundThread::ConstructL()
       
   393 	{
       
   394 	CActiveScheduler::Add(this);
       
   395 	}
       
   396 
       
   397 // -----------------------------------------------------------------------------
       
   398 // CStartAndMonitorDevSoundThread::StartDevSoundServer
       
   399 // Starts a new DevSound server.
       
   400 // -----------------------------------------------------------------------------
       
   401 //
       
   402 TInt CStartAndMonitorDevSoundThread::StartDevSoundServer(
       
   403 	RMessage2& aMessage,
       
   404 	RMMFDevSoundServerProxy& aDevSoundSessionHandle)
       
   405 	{
       
   406 	SYMBIAN_DEBPRN0(_L("CStartAndMonitorDevSoundThread[0x%x]::StartDevSoundServer - enter"));
       
   407 	
       
   408 	RThread clientThread;
       
   409 	TInt err(KErrNone);
       
   410 	
       
   411 	// Open handle to client thread
       
   412 	err = aMessage.Client(clientThread);
       
   413 	if (err != KErrNone)
       
   414 		{
       
   415 		clientThread.Close();
       
   416 		return err;
       
   417 		}
       
   418 	// Open a process-relative handle to the process which owns clientThread.
       
   419 	RProcess clientProcess;
       
   420 	err = clientThread.Process(clientProcess);
       
   421 	
       
   422 	if (err != KErrNone)
       
   423 		{
       
   424 		// Close client thread handle and return error
       
   425 		clientThread.Close();
       
   426 		return err;
       
   427 		}
       
   428 	
       
   429 	// Get the client process id
       
   430 	TProcessId clientProcessId(clientProcess.Id());
       
   431 	
       
   432 	// Close client thread and client process handles
       
   433 	clientThread.Close();
       
   434 	clientProcess.Close();
       
   435 	
       
   436 	RServer2 devSoundServerHandle;
       
   437 	devSoundServerHandle.SetReturnedHandle(0);
       
   438 	
       
   439 	//Pass to DevSoundServer the clien't process ID
       
   440 	TDevSoundServerStart start(iAudioServer,
       
   441 								clientProcessId,
       
   442 								devSoundServerHandle);
       
   443 	
       
   444 	TThreadFunction serverFunc=CMMFDevSoundServer::StartThread;
       
   445 	
       
   446 	// To deal with the unique thread (+semaphore!) naming in EPOC,
       
   447 	// and that we may be trying to restart a server that has just
       
   448 	// exited we attempt to create a unique thread name for the server.
       
   449 #ifdef SYMBIAN_USE_SEPARATE_HEAPS
       
   450 	err = iServer.Create(KNullDesC,serverFunc,KDevSoundServerStackSize*2,
       
   451 						KDevSoundServerInitHeapSize,
       
   452 						KDevSoundServerMaxHeapSize,
       
   453 						&start,
       
   454 						EOwnerProcess);
       
   455 #else
       
   456 	err = iServer.Create(KNullDesC,
       
   457 						serverFunc,
       
   458 						(KDevSoundServerStackSize*2),
       
   459 						NULL,
       
   460 						&start,
       
   461 						EOwnerProcess);
       
   462 #endif // SYMBIAN_USE_SEPARATE_HEAPS
       
   463 	if(err != KErrNone)
       
   464 		{
       
   465 		return err;
       
   466 		}
       
   467 	iServer.SetPriority(KDevsoundSvrPriority);
       
   468 
       
   469 	// Synchronise with the server
       
   470 	TRequestStatus reqStatus;
       
   471 	iServer.Rendezvous(reqStatus);
       
   472 
       
   473 	if (reqStatus!=KRequestPending)
       
   474 		{
       
   475 		iServer.Kill(0);
       
   476 		}
       
   477 	else
       
   478 		{
       
   479 		// Start the test harness
       
   480 		iServer.Resume();
       
   481 		// Server will call the reciprocal static synchronise call
       
   482 		}
       
   483 
       
   484 	// note devSoundServerHandle really "owned" by client thread - just copied here
       
   485 
       
   486 	User::WaitForRequest(reqStatus); // wait for start or death
       
   487 	if(reqStatus.Int() != KErrNone)
       
   488 		{
       
   489 		// close our handle to the thread. If we reach here, the thread should have
       
   490 		// closed anyway as continue Rendezvous is always KErrNone() 
       
   491 		iServer.Close();
       
   492 		return reqStatus.Int();
       
   493 		}
       
   494 
       
   495 	err = aDevSoundSessionHandle.Open(devSoundServerHandle);
       
   496 
       
   497 	if(err != KErrNone)
       
   498 		{
       
   499 		// close our handle to the thread. If we reach here, this means that NewSessionL() failed
       
   500 		// on server, and that action itself will asynchronously stop the thread
       
   501 		iServer.Close();
       
   502 		return err;
       
   503 		}
       
   504 
       
   505 	aDevSoundSessionHandle.ShareProtected();
       
   506 	iServer.Logon(iStatus);
       
   507 	SetActive();
       
   508 
       
   509 	iAudioServer->IncrementDevSoundCount();
       
   510 
       
   511 	SYMBIAN_DEBPRN0(_L("CStartAndMonitorDevSoundThread[0x%x]::StartDevSoundServer - exit"));
       
   512 	return KErrNone;
       
   513 	}
       
   514 
       
   515 // -----------------------------------------------------------------------------
       
   516 // CStartAndMonitorDevSoundThread::CStartAndMonitorDevSoundThread
       
   517 // Constructor
       
   518 // -----------------------------------------------------------------------------
       
   519 //
       
   520 CStartAndMonitorDevSoundThread::CStartAndMonitorDevSoundThread(
       
   521 	CMMFAudioServer* aAudioServer)
       
   522 	: CActive(EPriorityStandard),iAudioServer(aAudioServer)
       
   523 	{
       
   524 
       
   525 	}
       
   526 
       
   527 // Desctructor
       
   528 CStartAndMonitorDevSoundThread::~CStartAndMonitorDevSoundThread()
       
   529 	{
       
   530 	Cancel();
       
   531 	}
       
   532 
       
   533 // -----------------------------------------------------------------------------
       
   534 // CStartAndMonitorDevSoundThread::RunL
       
   535 // Called by Active Object framework when DevSound server is destroyed.
       
   536 // -----------------------------------------------------------------------------
       
   537 //
       
   538 void CStartAndMonitorDevSoundThread::RunL()
       
   539 	{
       
   540 	iServer.Close();
       
   541 	iAudioServer->DecrementDevSoundCount();
       
   542 	}
       
   543 
       
   544 // -----------------------------------------------------------------------------
       
   545 // CStartAndMonitorDevSoundThread::DoCancel
       
   546 // Called by Active Object framework when client cancels active object.
       
   547 // -----------------------------------------------------------------------------
       
   548 //
       
   549 void CStartAndMonitorDevSoundThread::DoCancel()
       
   550 	{
       
   551 	iServer.LogonCancel(iStatus);
       
   552 	}
       
   553 
       
   554 
       
   555 // -----------------------------------------------------------------------------
       
   556 // RMMFDevSoundServerProxy::Open
       
   557 // Creates new audio server session for the devsound server.
       
   558 // -----------------------------------------------------------------------------
       
   559 //
       
   560 TInt RMMFDevSoundServerProxy::Open(RServer2& aDevSoundServerHandle)
       
   561 	{
       
   562 	SYMBIAN_DEBPRN0(_L("RMMFDevSoundServerProxy[0x%x]::Open - enter"));
       
   563 	TInt err = CreateSession(aDevSoundServerHandle, TVersion(KMMFDevSoundServerVersion,
       
   564 							KMMFDevSoundServerMinorVersionNumber,
       
   565 							KMMFDevSoundServerBuildVersionNumber),
       
   566 							-1, EIpcSession_GlobalSharable);
       
   567 
       
   568 	SYMBIAN_DEBPRN0(_L("RMMFDevSoundServerProxy[0x%x]::Open - exit"));
       
   569 	return err;
       
   570 	}
       
   571 
       
   572 //  End of File