1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/epoc32/include/mmf/server/mmfdes.h Tue Mar 16 16:12:26 2010 +0000
1.3 @@ -0,0 +1,125 @@
1.4 +// Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies).
1.5 +// All rights reserved.
1.6 +// This component and the accompanying materials are made available
1.7 +// 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
1.8 +// which accompanies this distribution, and is available
1.9 +// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
1.10 +//
1.11 +// Initial Contributors:
1.12 +// Nokia Corporation - initial contribution.
1.13 +//
1.14 +// Contributors:
1.15 +//
1.16 +// Description:
1.17 +//
1.18 +
1.19 +#ifndef __MMFDES_H_
1.20 +#define __MMFDES_H_
1.21 +
1.22 +
1.23 +#include <mmf/server/mmfclip.h>
1.24 +#include <mmf/common/mmfutilities.h>
1.25 +
1.26 +
1.27 +/**
1.28 +@publishedAll
1.29 +@released
1.30 +
1.31 +Descriptor parameters.
1.32 +
1.33 +Used by CMMFDescriptor::ConstructL().
1.34 +*/
1.35 +class TMMFDescriptorParams
1.36 + {
1.37 +public:
1.38 + /**
1.39 + Address of TPr8 describing source descriptor.
1.40 + */
1.41 + TAny* iDes ; // Address of TPr8 describing source Descriptor
1.42 + /**
1.43 + Descriptor thread.
1.44 + */
1.45 + TThreadId iDesThreadId ;
1.46 +private:
1.47 + /**
1.48 + This member is internal and not intended for use.
1.49 + */
1.50 + TInt iReserved1;
1.51 + } ;
1.52 +
1.53 +/**
1.54 +@publishedAll
1.55 +@released
1.56 +*/
1.57 +typedef TPckgBuf<TMMFDescriptorParams> TMMFDescriptorConfig ;
1.58 +
1.59 +/**
1.60 +@publishedAll
1.61 +@released
1.62 +
1.63 +MultiMedia framework class. Represents a client side descriptor.
1.64 +May be source descriptor from which data is read or destination to which data is written
1.65 +*/
1.66 +class CMMFDescriptor : public CMMFClip
1.67 + {
1.68 +public :
1.69 +
1.70 + // From MDataSource
1.71 + virtual TFourCC SourceDataTypeCode( TMediaId aMediaId) ;
1.72 + virtual void FillBufferL(CMMFBuffer* aBuffer, MDataSink* aConsumer,TMediaId aMediaId) ;//called by a MDataSink to request buffer fill
1.73 + virtual void BufferEmptiedL( CMMFBuffer* aBuffer ) ;
1.74 + virtual TBool CanCreateSourceBuffer() ;
1.75 + virtual CMMFBuffer* CreateSourceBufferL(TMediaId aMediaId, TBool &aReference) ;
1.76 +
1.77 + // From MDataSink
1.78 + virtual TFourCC SinkDataTypeCode(TMediaId aMediaId) ; //used by data path MDataSource/Sink for codec matching
1.79 + virtual void EmptyBufferL( CMMFBuffer* aBuffer, MDataSource* aSupplier, TMediaId aMediaId ) ;
1.80 + virtual void BufferFilledL( CMMFBuffer* aBuffer ) ;
1.81 + virtual TBool CanCreateSinkBuffer() ;
1.82 + virtual CMMFBuffer* CreateSinkBufferL( TMediaId aMediaId , TBool &aReference) ;
1.83 +
1.84 + // From CMMFClip
1.85 + virtual void ReadBufferL( TInt aLength, CMMFBuffer* aBuffer, TInt aPosition, MDataSink* aConsumer);
1.86 + virtual void WriteBufferL( TInt aLength, CMMFBuffer* aBuffer, TInt aPosition, MDataSource* aSupplier);
1.87 + virtual void ReadBufferL( CMMFBuffer* aBuffer, TInt aPosition, MDataSink* aConsumer) ;
1.88 + virtual void WriteBufferL( CMMFBuffer* aBuffer, TInt aPosition, MDataSource* aSupplier) ;
1.89 + virtual void ReadBufferL( CMMFBuffer* aBuffer, TInt aPosition) ;
1.90 + virtual void WriteBufferL( CMMFBuffer* aBuffer, TInt aPosition) ;
1.91 + virtual TInt64 BytesFree() ; // amount of space available for the clip
1.92 + virtual TInt Size() ; // length of clip
1.93 + virtual TInt SetSize( TInt aSize ); // sets the size of the clip (used mainly by crop)
1.94 +
1.95 + // CMMFDescriptor
1.96 + virtual ~CMMFDescriptor() ;
1.97 + static MDataSource* NewSourceL() ;
1.98 + static MDataSink* NewSinkL() ;
1.99 +
1.100 + void SetTransferBuffer (TBool aTBuffer) ;
1.101 + TBool CanUseTransferBuffer () ;
1.102 +
1.103 +protected :
1.104 + virtual void ConstructSinkL( const TDesC8& aInitData ) ;
1.105 + virtual void ConstructSourceL( const TDesC8& aInitData ) ;
1.106 + void ConstructL( const TDesC8& aInitData ) ;
1.107 + CMMFDescriptor( ) ;
1.108 +
1.109 +private :
1.110 + // returns the Maximum length of the descriptor
1.111 + inline TInt MaxLength() { ASSERT( iDes ); return iDes->MaxLength(); }
1.112 +
1.113 + // Need to know about the thread that the descriptor is in.
1.114 + RThread iDesThread ;
1.115 +
1.116 + TDes8* iDes ;
1.117 + TInt iOffset ;
1.118 +
1.119 + TFourCC iSinkFourCC ;
1.120 + TFourCC iSourceFourCC ;
1.121 +
1.122 + TBool iUseTransferBuffer ;
1.123 +
1.124 +
1.125 + } ;
1.126 +
1.127 +
1.128 +#endif