--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/epoc32/include/mmf/server/mmfdatapathproxy.h	Tue Mar 16 16:12:26 2010 +0000
@@ -0,0 +1,215 @@
+// Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
+// which accompanies this distribution, and is available
+// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+#ifndef __MMFDATAPATHPROXY_H__
+#define __MMFDATAPATHPROXY_H__
+
+#include <e32base.h>
+#include <e32std.h>
+#include <ecom/ecom.h>
+#include <mmf/server/mmfdatapath.h>
+#include <mmf/server/mmfsubthreadbase.h>
+
+#define KMMFDataPathProxyVersion TVersion(8,0,0)
+
+/**
+The amount of time that is allowed for the datapath to close down before the its thread is killed.
+*/
+#define  KMMFDataPathProxyShutdownTimeout TTimeIntervalMicroSeconds32(10000000)
+
+
+/**
+@publishedAll
+@released
+
+Mixin class that the user of the class CMMFDataPathEventMonitor must derive from.
+
+@since 7.0s
+*/
+class MMMFDataPathEventMonitorObserver
+	{
+public:
+
+	/**
+	Handles an event that has been generated by the datapath.
+
+	Called by CMMFDataPathEventMonitor::RunL().
+
+	@param  aEvent
+	        The event to be handled.
+
+	@since  7.0s
+	*/
+	virtual void HandleEvent(const TMMFEvent& aEvent) = 0;
+	};
+
+class RMMFDataPathProxy; //forward reference
+
+/**
+@publishedAll
+@released
+
+Active object utility class that can be used to monitor a datapath that is running in its own
+thread for events. If an event occurs, the client will be notified via the
+MMMFDataPathEventMonitorObserver interface.
+
+@since  7.0s
+*/
+class CMMFDataPathEventMonitor : public CActive
+	{
+public:
+
+	IMPORT_C static CMMFDataPathEventMonitor* NewL(MMMFDataPathEventMonitorObserver& aObserver,
+		RMMFDataPathProxy& aMMFDataPathProxy);
+
+	IMPORT_C ~CMMFDataPathEventMonitor();
+
+	IMPORT_C void Start();
+
+	IMPORT_C void RunL();
+protected:
+
+	void DoCancel();
+private:
+
+	/**
+	Constructs a datapath event monitor object.
+
+	@param  aObserver
+	        A reference to the observer of the active object. The observer will be
+	        notified when an event occurs.
+	@param  aMMFDataPathProxy
+	        A reference to the datapath proxy class.
+
+	@since  7.0s
+	*/
+	CMMFDataPathEventMonitor(MMMFDataPathEventMonitorObserver& aObserver, 
+		RMMFDataPathProxy& aMMFDataPathProxy);
+private:
+	MMMFDataPathEventMonitorObserver& iObserver;
+	RMMFDataPathProxy& iMMFDataPathProxy;
+	TMMFEventPckg iEventPckg;
+	};
+
+/**
+@publishedAll
+@released
+
+Proxy class used to create a datapath in a new subthread.
+*/
+class RMMFDataPathProxy : public RMMFSubThreadBase
+
+	{
+public:
+
+	/**
+	Constuctor.
+	*/
+	RMMFDataPathProxy() : RMMFSubThreadBase(KMMFDataPathProxyShutdownTimeout) {};
+
+	IMPORT_C TInt CreateSubThread();
+
+	IMPORT_C TInt LoadDataPath();
+
+	IMPORT_C TInt LoadDataPath(TMediaId aMediaId);
+
+	IMPORT_C TInt LoadDataPath(TUid aCodecUid); 
+
+	IMPORT_C TInt LoadDataPath(TUid aCodecUid, TMediaId aMediaId);
+
+	IMPORT_C TInt AddDataSource(MDataSource* aSource);
+
+	IMPORT_C TInt AddDataSink(MDataSink* aSink);
+
+	IMPORT_C TInt Prime();
+
+	IMPORT_C TInt Play();
+
+	IMPORT_C TInt Pause();
+
+	IMPORT_C TInt Stop();
+
+	IMPORT_C TInt GetPosition(TTimeIntervalMicroSeconds& aPosition) const;
+
+	IMPORT_C TInt SetPosition(const TTimeIntervalMicroSeconds& aPosition);
+
+	IMPORT_C TInt SetPlayWindow( const TTimeIntervalMicroSeconds& aStart, const TTimeIntervalMicroSeconds& aEnd ) ;
+
+	IMPORT_C TInt ClearPlayWindow() ;
+
+	IMPORT_C TInt State( TInt& aState ) ;
+
+	IMPORT_C void Close();
+	};
+
+/**
+@internalComponent
+ 
+The server running in the datapath subthread.
+The subthread is owned by the main thread and shares the same heap.
+*/
+class CMMFDataPathProxyServer : public CMMFSubThreadServer
+	{
+public:
+	static CMMFDataPathProxyServer* NewL();
+	~CMMFDataPathProxyServer();
+	static TInt StartThread(TAny* aAny);
+	static void DoStartThreadL();
+private:
+	CMmfIpcSession* NewSessionL(const TVersion& aVersion) const;
+	CMMFDataPathProxyServer();
+	void ConstructL();
+	};
+
+
+/**
+@internalComponent
+
+The session used to transmit messages between the main thread and the subthread.
+Only one session can be created with a datapath subthread.
+Once this session is closed, the subthread will be killed.
+*/
+class CMMFDataPathProxySession : public CMMFSubThreadSession
+	{
+public:
+	static CMMFDataPathProxySession* NewL();
+	~CMMFDataPathProxySession();
+	void ServiceL(const RMmfIpcMessage& aMessage);
+private:
+	CMMFDataPathProxySession();
+	TBool LoadDataPathByL(const RMmfIpcMessage& aMessage);
+	TBool LoadDataPathByMediaIdL(const RMmfIpcMessage& aMessage);
+	TBool LoadDataPathByCodecUidL(const RMmfIpcMessage& aMessage);
+	TBool LoadDataPathByMediaIdCodecUidL(const RMmfIpcMessage& aMessage);
+	TBool AddDataSourceL(const RMmfIpcMessage& aMessage);
+	TBool AddDataSinkL(const RMmfIpcMessage& aMessage);
+	TBool PrimeL(const RMmfIpcMessage& aMessage);
+	TBool PlayL(const RMmfIpcMessage& aMessage);
+	TBool PauseL(const RMmfIpcMessage& aMessage);
+	TBool StopL(const RMmfIpcMessage& aMessage);
+	TBool GetPositionL(const RMmfIpcMessage& aMessage) const;
+	TBool SetPositionL(const RMmfIpcMessage& aMessage);
+	TBool SetPlayWindowL(const RMmfIpcMessage& aMessage) ;
+	TBool ClearPlayWindowL(const RMmfIpcMessage& aMessage) ;
+	TBool StateL(const RMmfIpcMessage& aMessage) ;
+
+	void CheckDataPathExistsL() const {if (!iDataPath) User::Leave(KErrNotReady);};
+private:
+	CMMFDataPath* iDataPath;
+	};
+
+
+
+#endif