author | William Roberts <williamr@symbian.org> |
Tue, 16 Mar 2010 16:12:26 +0000 | |
branch | Symbian2 |
changeset 2 | 2fe1408b6811 |
child 4 | 837f303aceeb |
permissions | -rw-r--r-- |
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// Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// 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 |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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#ifndef __MMFDES_H_ |
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#define __MMFDES_H_ |
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#include <mmf/server/mmfclip.h> |
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#include <mmf/common/mmfutilities.h> |
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/** |
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@publishedAll |
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@released |
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Descriptor parameters. |
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Used by CMMFDescriptor::ConstructL(). |
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*/ |
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class TMMFDescriptorParams |
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{ |
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public: |
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/** |
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Address of TPr8 describing source descriptor. |
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*/ |
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TAny* iDes ; // Address of TPr8 describing source Descriptor |
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/** |
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Descriptor thread. |
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TThreadId iDesThreadId ; |
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private: |
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This member is internal and not intended for use. |
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*/ |
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TInt iReserved1; |
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} ; |
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/** |
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@publishedAll |
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@released |
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*/ |
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typedef TPckgBuf<TMMFDescriptorParams> TMMFDescriptorConfig ; |
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/** |
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@publishedAll |
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@released |
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MultiMedia framework class. Represents a client side descriptor. |
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May be source descriptor from which data is read or destination to which data is written |
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*/ |
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class CMMFDescriptor : public CMMFClip |
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{ |
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public : |
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// From MDataSource |
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virtual TFourCC SourceDataTypeCode( TMediaId aMediaId) ; |
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virtual void FillBufferL(CMMFBuffer* aBuffer, MDataSink* aConsumer,TMediaId aMediaId) ;//called by a MDataSink to request buffer fill |
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virtual void BufferEmptiedL( CMMFBuffer* aBuffer ) ; |
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virtual TBool CanCreateSourceBuffer() ; |
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virtual CMMFBuffer* CreateSourceBufferL(TMediaId aMediaId, TBool &aReference) ; |
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// From MDataSink |
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virtual TFourCC SinkDataTypeCode(TMediaId aMediaId) ; //used by data path MDataSource/Sink for codec matching |
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virtual void EmptyBufferL( CMMFBuffer* aBuffer, MDataSource* aSupplier, TMediaId aMediaId ) ; |
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virtual void BufferFilledL( CMMFBuffer* aBuffer ) ; |
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virtual TBool CanCreateSinkBuffer() ; |
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virtual CMMFBuffer* CreateSinkBufferL( TMediaId aMediaId , TBool &aReference) ; |
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// From CMMFClip |
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virtual void ReadBufferL( TInt aLength, CMMFBuffer* aBuffer, TInt aPosition, MDataSink* aConsumer); |
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virtual void WriteBufferL( TInt aLength, CMMFBuffer* aBuffer, TInt aPosition, MDataSource* aSupplier); |
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virtual void ReadBufferL( CMMFBuffer* aBuffer, TInt aPosition, MDataSink* aConsumer) ; |
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virtual void WriteBufferL( CMMFBuffer* aBuffer, TInt aPosition, MDataSource* aSupplier) ; |
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virtual void ReadBufferL( CMMFBuffer* aBuffer, TInt aPosition) ; |
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virtual void WriteBufferL( CMMFBuffer* aBuffer, TInt aPosition) ; |
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virtual TInt64 BytesFree() ; // amount of space available for the clip |
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virtual TInt Size() ; // length of clip |
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virtual TInt SetSize( TInt aSize ); // sets the size of the clip (used mainly by crop) |
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// CMMFDescriptor |
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virtual ~CMMFDescriptor() ; |
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static MDataSource* NewSourceL() ; |
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static MDataSink* NewSinkL() ; |
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void SetTransferBuffer (TBool aTBuffer) ; |
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TBool CanUseTransferBuffer () ; |
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protected : |
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virtual void ConstructSinkL( const TDesC8& aInitData ) ; |
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virtual void ConstructSourceL( const TDesC8& aInitData ) ; |
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void ConstructL( const TDesC8& aInitData ) ; |
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CMMFDescriptor( ) ; |
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private : |
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// returns the Maximum length of the descriptor |
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inline TInt MaxLength() { ASSERT( iDes ); return iDes->MaxLength(); } |
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// Need to know about the thread that the descriptor is in. |
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RThread iDesThread ; |
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TDes8* iDes ; |
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TInt iOffset ; |
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TFourCC iSinkFourCC ; |
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TFourCC iSourceFourCC ; |
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TBool iUseTransferBuffer ; |
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Final list of Symbian^2 public API header files
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Final list of Symbian^2 public API header files
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} ; |
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Final list of Symbian^2 public API header files
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Final list of Symbian^2 public API header files
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parents:
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#endif |