--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/epoc32/include/mmf/server/mmfdes.h	Tue Mar 16 16:12:26 2010 +0000
@@ -0,0 +1,125 @@
+// 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 __MMFDES_H_
+#define __MMFDES_H_
+
+
+#include <mmf/server/mmfclip.h>
+#include <mmf/common/mmfutilities.h>
+
+
+/**
+@publishedAll
+@released
+
+Descriptor parameters.
+
+Used by CMMFDescriptor::ConstructL().
+*/
+class TMMFDescriptorParams
+	{
+public:
+	/**
+    Address of TPr8 describing source descriptor.
+	*/
+	TAny* iDes ; // Address of TPr8 describing source Descriptor
+	/**
+	Descriptor thread.
+	*/
+	TThreadId iDesThreadId ;
+private:
+	/**
+	This member is internal and not intended for use.
+	*/
+	TInt iReserved1;
+	} ;
+
+/**
+@publishedAll
+@released
+*/
+typedef TPckgBuf<TMMFDescriptorParams>  TMMFDescriptorConfig ;
+
+/**
+@publishedAll
+@released
+
+MultiMedia framework class.  Represents a client side descriptor.
+May be source descriptor from which data is read or destination to which data is written
+*/
+class CMMFDescriptor : public CMMFClip
+	{
+public :
+
+	// From MDataSource
+	virtual TFourCC SourceDataTypeCode( TMediaId aMediaId) ;
+	virtual void FillBufferL(CMMFBuffer* aBuffer, MDataSink* aConsumer,TMediaId aMediaId) ;//called by a MDataSink to request buffer fill
+	virtual void BufferEmptiedL( CMMFBuffer* aBuffer ) ;
+	virtual TBool CanCreateSourceBuffer() ;
+	virtual CMMFBuffer* CreateSourceBufferL(TMediaId aMediaId, TBool &aReference) ;
+	
+	// From MDataSink
+	virtual TFourCC SinkDataTypeCode(TMediaId aMediaId) ; //used by data path MDataSource/Sink for codec matching
+	virtual void EmptyBufferL( CMMFBuffer* aBuffer, MDataSource* aSupplier, TMediaId aMediaId ) ;
+	virtual void BufferFilledL( CMMFBuffer* aBuffer ) ;
+	virtual TBool CanCreateSinkBuffer() ;
+	virtual CMMFBuffer* CreateSinkBufferL( TMediaId aMediaId , TBool &aReference) ;
+
+	// From CMMFClip
+	virtual void ReadBufferL( TInt aLength, CMMFBuffer* aBuffer, TInt aPosition, MDataSink* aConsumer);
+	virtual void WriteBufferL( TInt aLength, CMMFBuffer* aBuffer, TInt aPosition, MDataSource* aSupplier);
+	virtual void ReadBufferL( CMMFBuffer* aBuffer, TInt aPosition, MDataSink* aConsumer) ;
+	virtual void WriteBufferL( CMMFBuffer* aBuffer, TInt aPosition, MDataSource* aSupplier) ;
+	virtual void ReadBufferL( CMMFBuffer* aBuffer, TInt aPosition) ;
+	virtual void WriteBufferL( CMMFBuffer* aBuffer, TInt aPosition) ;
+	virtual TInt64 BytesFree() ;  // amount of space available for the clip
+	virtual TInt Size() ;  // length of clip
+	virtual TInt SetSize( TInt aSize ); // sets the size of the clip (used mainly by crop)
+
+	// CMMFDescriptor
+	virtual ~CMMFDescriptor() ;
+	static MDataSource* NewSourceL() ; 
+	static MDataSink* NewSinkL() ; 
+
+	void SetTransferBuffer (TBool aTBuffer) ;
+	TBool CanUseTransferBuffer () ;
+
+protected :
+	virtual void ConstructSinkL( const TDesC8& aInitData ) ;
+	virtual void ConstructSourceL(  const TDesC8& aInitData ) ;
+	void ConstructL( const TDesC8& aInitData ) ;
+	CMMFDescriptor( ) ;
+
+private :
+	// returns the Maximum length of the descriptor
+	inline TInt MaxLength() { ASSERT( iDes ); return iDes->MaxLength(); }
+
+	// Need to know about the thread that the descriptor is in.
+	RThread iDesThread ;
+
+	TDes8* iDes ;
+	TInt iOffset ;
+
+	TFourCC  iSinkFourCC ;
+	TFourCC  iSourceFourCC ;
+
+	TBool iUseTransferBuffer ;
+
+	
+	} ;
+
+
+#endif