diff -r 000000000000 -r bde4ae8d615e os/mm/devsound/devsoundpluginsupport/src/CustomInterfaces/audiobufferprefillci.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/mm/devsound/devsoundpluginsupport/src/CustomInterfaces/audiobufferprefillci.cpp	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,417 @@
+// Copyright (c) 2007-2009 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 <ecom/implementationproxy.h>
+#include <ecom/implementationproxy.h>
+#include <ecom/ecom.h>
+#include <s32mem.h>
+
+#include "audiobufferprefillci.h"
+
+
+// MUX //
+
+TInt CMMFSampleBufferingMux::OpenInterface(TUid /*aInterfaceId*/)
+	{
+	// attempt to open the interface link with the
+	// remote slave device
+	iRemoteHandle = -1;
+	TUid slaveId = {KMmfUidCustomInterfaceSampleBufferingDeMux};
+
+	TInt handle = iUtility->OpenSlave(slaveId, KNullDesC8);
+	if (handle >= 0)
+		{
+		iRemoteHandle = handle;
+		}
+
+	return iRemoteHandle;
+	}
+
+
+void CMMFSampleBufferingMux::Release()
+	{
+	// close the slave device if it exists
+	if (iRemoteHandle > 0)
+		{
+		// we assume the slave is closed correctly
+		iUtility->CloseSlave(iRemoteHandle);
+		}
+
+	TUid key = iKey;
+	delete this;
+
+	// tell ECom to destroy us
+	REComSession::DestroyedImplementation(key);
+	}
+
+
+void CMMFSampleBufferingMux::PassDestructorKey(TUid aDestructorKey)
+	{
+	// store the destructor key
+	iKey = aDestructorKey;
+	}
+
+
+void CMMFSampleBufferingMux::CompleteConstructL(MMMFDevSoundCustomInterfaceMuxUtility* aCustomUtility)
+	{
+	// store a pointer to the utility
+	iUtility = aCustomUtility;
+	}
+
+
+MMMFDevSoundCustomInterfaceMuxPlugin* CMMFSampleBufferingMux::NewL()
+	{
+	CMMFSampleBufferingMux* self = new (ELeave) CMMFSampleBufferingMux;
+	return self;
+	}
+
+
+TAny* CMMFSampleBufferingMux::CustomInterface(TUid /*aInterfaceId*/)
+	{
+	MMMFSampleBuffering* interface = this;
+	return interface;
+	}
+
+
+CMMFSampleBufferingMux::CMMFSampleBufferingMux() :
+iRemoteHandle(-1) 
+	{
+	}
+
+
+CMMFSampleBufferingMux::~CMMFSampleBufferingMux()
+	{
+	}
+
+
+// from MMMFSampleBuffering
+TInt CMMFSampleBufferingMux::MmsbEnableSampleBufferingBeforePlayback()
+	{
+	TInt result = KErrBadHandle;
+
+	if (iRemoteHandle > 0)
+		{
+		// any return code other than zero is an error
+		result = iUtility->SendSlaveSyncCommand(iRemoteHandle,
+												EMMFDevSoundCIEnableSampleBufferingBeforePlayback,
+												KNullDesC8);
+		}
+
+	return result;
+	}
+
+
+// from MMMFSampleBuffering
+TInt CMMFSampleBufferingMux::MmsbDisableSampleBufferingBeforePlayback()
+	{
+	TInt result = KErrBadHandle;
+
+	if (iRemoteHandle > 0)
+		{
+		// any return code other than zero is an error
+		result = iUtility->SendSlaveSyncCommand(iRemoteHandle,
+												EMMFDevSoundCIDisableSampleBufferingBeforePlayback,
+												KNullDesC8);
+		}
+
+	return result;
+	}
+
+
+// from MMMFSampleBuffering
+void CMMFSampleBufferingMux::MmsbNotifyPlayStarted(TRequestStatus& aStatus)
+	{
+	if (iRemoteHandle > 0)
+		{
+		// package the handle and command, and send in the Async command
+		iCmdPkg().iHandle = iRemoteHandle;
+		iCmdPkg().iCommand = EMMFDevSoundCINotifyPlayStarted;
+
+		// any return code other than zero is an error
+		iUtility->SendSlaveAsyncCommand(iCmdPkg, aStatus, KNullDesC8);
+		}
+	}
+
+
+// from MMMFSampleBuffering
+void CMMFSampleBufferingMux::MmsbCancelNotifyPlayStarted()
+	{
+	if (iRemoteHandle > 0)
+		{
+		// any return code other than zero is an error
+		TInt result = iUtility->SendSlaveSyncCommand(iRemoteHandle,
+													 EMMFDevSoundCICancelNotifyPlayStarted,
+													 KNullDesC8);
+		}
+	}
+
+
+
+// DEMUX //	
+
+TInt CMMFSampleBufferingDeMux::OpenInterface(TUid /*aInterfaceId*/)
+	{
+	return KErrNone;
+	}
+
+
+void CMMFSampleBufferingDeMux::Release()
+	{
+	TUid key = iKey;
+
+	delete this;
+
+	// tell ECom to destroy us
+	REComSession::DestroyedImplementation(key);
+	}
+
+
+void CMMFSampleBufferingDeMux::PassDestructorKey(TUid aDestructorKey)
+	{
+	// store the destructor key
+	iKey = aDestructorKey;
+	}
+
+
+void CMMFSampleBufferingDeMux::SetInterfaceTarget(MMMFDevSoundCustomInterfaceTarget* aTarget)
+	{
+	iTarget = aTarget;
+	}
+
+
+void CMMFSampleBufferingDeMux::CompleteConstructL(MMMFDevSoundCustomInterfaceDeMuxUtility* aCustomUtility)
+	{
+	// store a pointer to the utility
+	iUtility = aCustomUtility;
+	}
+
+
+void CMMFSampleBufferingDeMux::RefreshL()
+	{
+	// refetch the Sample Buffering  custom interface if we already have a target
+	if (iTarget)
+		{
+		iInterfaceSampleBuffering = static_cast <MMMFSampleBuffering*> (iTarget->CustomInterface(KUidSampleBuffering ));
+
+		if (!iInterfaceSampleBuffering)
+			{
+			iInterfaceSampleBuffering = NULL;
+			User::Leave(KErrNotSupported);
+			}
+		}
+	}
+
+
+MMMFDevSoundCustomInterfaceDeMuxPlugin* CMMFSampleBufferingDeMux::NewL()
+	{
+	CMMFSampleBufferingDeMux* self = new (ELeave) CMMFSampleBufferingDeMux;
+	return self;
+	}
+
+
+CMMFSampleBufferingDeMux::CMMFSampleBufferingDeMux() : CActive(CActive::EPriorityStandard)
+	{
+	CActiveScheduler::Add(this);
+	}
+
+
+CMMFSampleBufferingDeMux::~CMMFSampleBufferingDeMux()
+	{
+	Cancel();
+	}
+
+
+TInt CMMFSampleBufferingDeMux::DoOpenSlaveL(TUid /*aInterface*/, const TDesC8& /*aPackageBuf*/)
+	{
+	// fetch the Sample Buffering  Hw Device custom interface
+	iInterfaceSampleBuffering = static_cast<MMMFSampleBuffering*> (iTarget->CustomInterface(KUidSampleBuffering)); 
+
+	if (!iInterfaceSampleBuffering)
+		{
+		iInterfaceSampleBuffering = NULL;
+		User::Leave(KErrNotSupported);
+		}
+
+	return KErrNone;
+	}
+
+
+void CMMFSampleBufferingDeMux::DoCloseSlaveL(TInt /*aHandle*/)
+	{
+	// nothing to do
+	}
+
+
+// original RMessage is supplied so that remote demux plugin can extract necessary details
+// using DeMux utility
+TInt CMMFSampleBufferingDeMux::DoSendSlaveSyncCommandL(const RMmfIpcMessage& aMessage)
+	{
+	TMMFDevSoundCIMessageData data;
+	TInt result = KErrGeneral;
+
+	// decode message
+	iUtility->GetSyncMessageDataL(aMessage, data);
+
+	switch (data.iCommand)
+		{
+		case EMMFDevSoundCIEnableSampleBufferingBeforePlayback:
+			{
+			result = DoMmsbEnableSampleBufferingBeforePlaybackL();
+			break;
+			}
+		case EMMFDevSoundCIDisableSampleBufferingBeforePlayback:
+			{
+			result = DoMmsbDisableSampleBufferingBeforePlaybackL();
+			break;
+			}
+		case EMMFDevSoundCICancelNotifyPlayStarted:
+			{
+			DoMmsbCancelNotifyPlayStartedL();
+			break;
+			}
+		default:
+			{
+			User::Leave(KErrNotSupported);
+			}
+		}
+
+	return result;
+	}
+
+
+TInt CMMFSampleBufferingDeMux::DoSendSlaveSyncCommandResultL(const RMmfIpcMessage& /*aMessage*/)
+	{
+	return KErrNone;
+	}
+
+
+void CMMFSampleBufferingDeMux::DoSendSlaveAsyncCommandL(const RMmfIpcMessage& aMessage)
+	{
+	TMMFDevSoundCIMessageData data;
+
+	// decode message
+	iUtility->GetAsyncMessageDataL(aMessage, data);
+
+	switch (data.iCommand)
+		{
+		case EMMFDevSoundCINotifyPlayStarted:
+			{
+			DoMmsbNotifyPlayStartedL(aMessage);
+			break;
+			}
+		default:
+			{
+			User::Leave(KErrNotSupported);
+			}
+		}
+	}
+
+
+void CMMFSampleBufferingDeMux::DoSendSlaveAsyncCommandResultL(const RMmfIpcMessage& /*aMessage*/)
+	{
+	// not used in this interface
+	}
+
+
+// Sample Buffering  custom interface implementation
+TInt CMMFSampleBufferingDeMux::DoMmsbEnableSampleBufferingBeforePlaybackL()
+	{
+	TInt result = KErrNotFound;
+
+	if (iInterfaceSampleBuffering)
+		{
+		result = iInterfaceSampleBuffering->MmsbEnableSampleBufferingBeforePlayback();
+		}
+
+	return result;
+	}
+
+
+// Sample Buffering custom interface implementation
+TInt CMMFSampleBufferingDeMux::DoMmsbDisableSampleBufferingBeforePlaybackL()
+	{
+	TInt result = KErrNotFound;
+
+	if (iInterfaceSampleBuffering)
+		{
+		result = iInterfaceSampleBuffering->MmsbDisableSampleBufferingBeforePlayback();
+		}
+
+	return result;
+	}
+
+
+// Sample Buffering  custom interface implementation
+void CMMFSampleBufferingDeMux::DoMmsbNotifyPlayStartedL(const RMmfIpcMessage& aMessage)
+	{
+	if (iInterfaceSampleBuffering)
+		{
+		// make a copy of the received message before jumping to the plugin.
+		// It will be used on the reply to the client.
+		iStoredMessage = aMessage;
+
+		iInterfaceSampleBuffering->MmsbNotifyPlayStarted(iStatus);
+
+		// check not already active
+		ASSERT(!IsActive());
+
+		SetActive();
+		}
+	}
+
+
+// Sample Buffering custom interface implementation
+void CMMFSampleBufferingDeMux::DoMmsbCancelNotifyPlayStartedL()
+	{
+	if (iInterfaceSampleBuffering)
+		{
+		iInterfaceSampleBuffering->MmsbCancelNotifyPlayStarted();
+		}
+	}
+
+
+// active object handling functions
+void CMMFSampleBufferingDeMux::RunL()
+	{
+	TInt err = iStatus.Int();
+
+	// complete the client request
+	iStoredMessage.Complete(err);
+	}
+
+
+void CMMFSampleBufferingDeMux::DoCancel()
+	{
+	}
+
+//
+// ImplementationTable
+//
+const TImplementationProxy ImplementationTable[] =
+	{
+	IMPLEMENTATION_PROXY_ENTRY(KMmfUidCustomInterfaceSampleBufferingMux,	CMMFSampleBufferingMux::NewL),
+	IMPLEMENTATION_PROXY_ENTRY(KMmfUidCustomInterfaceSampleBufferingDeMux,	CMMFSampleBufferingDeMux::NewL),
+	};
+
+//
+// ImplementationGroupProxy
+//
+EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)
+	{
+	aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);
+
+	return ImplementationTable;
+	}
+