dvrengine/CommonRecordingEngine/inc/CCRRtpRecordSink.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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/*
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* Copyright (c) 2007 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 "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.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:    Packet sink where no-one gets the streaming*
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*/
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#ifndef CCRRTPRECORDSINK_H
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#define CCRRTPRECORDSINK_H
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// INCLUDES
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#include "CCRPacketSinkBase.h"
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#include <ipvideo/MRtpFileWriteObserver.h>
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#include "MCRTimerObserver.h"
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#include <CXPSPktSinkObserver.h>
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// CONSTANTS
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// None
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// MACROS
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// None
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// DATA TYPES
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// None
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// FORWARD DECLARATIONS
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class CCRPacketBuffer;
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class CCRStreamingSession;
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class MCRConnectionObserver;
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class CRtpClipHandler;
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class CRtpTsConverter;
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// CLASS DECLARATION
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/**
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*  Packet sink that does not forward packets. Good for testing. 
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*
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*  @lib CommonRecordingEngine.lib
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*  @since Series 60 3.0
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*/
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class CCRRtpRecordSink : public CCRPacketSinkBase,
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                         public MRtpFileWriteObserver
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    {
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public: // Constructors and destructors   
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    /**
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    * Two-phased constructor.
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    * @param aRecordParams a recording parameters.
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    * @param aSinkId that this class needs to use when reporting progress back to owner.
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    * @param aOwningSession is the streaming session that owns this instance.
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    * @param aObserver a pointer to connection observer.
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    * @param aClipHandler a reference pointer to .rtp clip handler.
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    * @return CCRRtpRecordSink pointer. 
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    */
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    static CCRRtpRecordSink* NewL( const SCRRecordParams& aRecordParams,
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                                   CCRStreamingSession::TCRSinkId aSinkId,
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                                   CCRStreamingSession& aOwningSession,
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                                   MCRConnectionObserver* aObserver,
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                                   CRtpClipHandler*& aClipHandler );
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    /**
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    * Destructor 
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    */
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    virtual ~CCRRtpRecordSink();
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protected: // Constructors and destructors
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    /**
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    * By default default constructor is private
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    * @param aSinkId that this class needs to use when reporting progress back to owner.
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    * @param aObserver a pointer to connection observer.
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    * @param aClipHandler a reference pointer to .rtp clip handler.
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    * @param aOwningSession is the streaming session that owns this instance.
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    */
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    CCRRtpRecordSink( CCRStreamingSession::TCRSinkId aSinkId,
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                      CCRStreamingSession& aOwningSession,
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                      MCRConnectionObserver* aObserver,
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                      CRtpClipHandler*& aClipHandler );
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    /**
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    * Second phase of 2-phased construction
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    * @param aRecordParams a recording parameters.
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    */
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    void ConstructL( const SCRRecordParams& aRecordParams ); 
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private: // Methods from base classes
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    /**
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    * From CCRPacketSinkBase.
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    * Method for setting the sdp in use.
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    * @since Series 60 3.0
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    * @param aSdp is the new sdp.
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    * @return none.
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    */
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    void SetSdpL( const TDesC8& aSdp );
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    /**
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    * From CCRPacketSinkBase.
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    * Adds packet to the sink.
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    * @since Series 60 3.0
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    * @return none.
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    */
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    void NewPacketAvailable();
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   116
    
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    /**
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    * From CCRPacketSinkBase.
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    * Buffer reset info for the sink.
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    * @since Series 60 3.0
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    * @return none.
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    */
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    void BufferResetDone();
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   124
    
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    /**
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    * From CCRPacketSinkBase.
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    * Method for pause action for sink.
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    * @since Series 60 3.0
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    * @param none.
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    * @return a system wide error code.
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    */
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    TInt Pause();
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   133
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    /**
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    * From CCRPacketSinkBase.
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   136
    * Method for restore action for sink.
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    * @since Series 60 3.0
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    * @param none.
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    * @return a system wide error code.
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    */
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   141
    TInt Restore();
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   142
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   143
    /**
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    * From CCRPacketSinkBase.
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    * Method for stopping action for sink.
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    * @since Series 60 3.0
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    * @param none.
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    * @return none.
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    */
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    void Stop();
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   151
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    /**
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    * From MRtpFileWriteObserver.
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    * Group saved indication.
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    * @since Series 60 3.0
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    * @return none.
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    */
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    void GroupSaved();
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   159
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   160
    /**
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    * From MRtpFileWriteObserver.
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    * Clip handler status of recording.
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    * @since Series 60 3.0
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    * @param aStatus a status of file writing.
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    * @return none.
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    */
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    void WriteStatus( const TInt aStatus );
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   168
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private: // New methods
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   170
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   171
    /**
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    * Adds RTP packet(s) to a group.
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   173
    * @since Series 60 3.0
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    * @param none.
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    * @return none.
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    */
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   177
    void AddToGroup();
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   178
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   179
    /**
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    * Adds one RTP packet to a group.
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   181
    * @since Series 60 3.0
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    * @param aPacket a packet data.
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    * @param aType a packet type.
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    * @return none.
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    */
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    void AddPacketToGroupL( const TDesC8& aPacket,
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                            const MRtpFileWriteObserver::TRtpType& aType );
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   188
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   189
    /**
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   190
    * Saves one RTP packet group to a clip.
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    * @since Series 60 3.0
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    * @param aAction a saving action.
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    * @return none.
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   194
    */
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   195
    void SaveGroup( MRtpFileWriteObserver::TRtpSaveAction aAction );
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   196
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   197
    /**
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    * Saves one RTP packet group to a clip.
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   199
    * @since Series 60 3.0
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    * @param aAction a saving action.
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    * @return none.
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    */
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   203
    void SaveGroupL( MRtpFileWriteObserver::TRtpSaveAction aAction );
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   204
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   205
    /**
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   206
    * Converts stream id to old RTP propriatary format packet type.
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   207
    * @since Series 60 3.0
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   208
    * @param aType a packet type from a clip.
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   209
    * @param aStream a stream id to update.
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   210
    * @return true if packet valid, otherwise false.
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   211
    */
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   212
    TBool StreamToType( const MCRPacketSource::TCRPacketStreamId& aStream,
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                        MRtpFileWriteObserver::TRtpType& aType );
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   214
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   215
    /**
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   216
    * Handles TS delta calculation from audio packets.
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   217
    * @since Series 60 3.0
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    * @param aPacket a packet data.
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    * @return a TS of packet.
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   220
    */
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   221
    TUint TsFromPacketL( const TDesC8& aPacket );
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   222
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    /**
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    * Wrapper for AddPausePacketL().
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    * @since Series 60 3.0
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    * @param none.
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    * @return none.
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    */
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    void AddPausePacket();
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    /**
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    * Adds pause packet to group buffer.
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    * @since Series 60 3.0
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    * @param none.
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    * @return none.
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    */
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    void AddPausePacketL();
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    /**
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    * Resets packets group variables.
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    * @since Series 60 3.0
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    * @param aStatus a reason for recording end.
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    * @return none.
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    */
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    void ForceStopRecording( const TInt& aStatus );
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    /**
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    * Resets packets group variables.
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    * @since Series 60 3.0
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    * @param none.
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    * @return none.
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    */
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    void ResetGroupVariables();
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private: // Data
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    /**
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    * Packets group buffer.
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    */
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    HBufC8* iGroupBuffer;
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    /**
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    * Connection status observer.
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    */
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    MCRConnectionObserver* iObserver;
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    /**
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    * Clip handler for RTP clip.
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    */
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    CRtpClipHandler*& iClipHandler;
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    /**
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    * Packets group pointer.
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    */
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    TPtr8 iGroupPointer;
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    /**
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    * Current group size in bytes.
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    */
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    TInt iGroupSize;
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    /**
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    * Current group packets count.
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    */
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    TInt iPacketsCount;
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    /**
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    * Wanted group size.
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    */
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    TInt iWantedGroup;
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    /**
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    * TS converter for audio.
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    */
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    CRtpTsConverter* iAudioConv;
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    /**
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    * Time stamp of oldest audio packet.
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    */
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    TUint iOldestTs;
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    /**
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    * Latest audio packet.
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    */
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    TPtrC8 iLatestAudio;
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    /**
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    * Record mode, can be either normal of time shift.
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    */
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    MRtpFileWriteObserver:: TRtpSaveAction iSaveMode;
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    /**
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    * Next packet(s) mode, can be: normal, pause, end.
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    */
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    MRtpFileWriteObserver:: TRtpSaveAction iGroupMode;
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    /**
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    * Recording parameters.
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    */
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    MRtpFileWriteObserver::SRtpRecParams iRecParams;
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    };
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#endif // CCRRTPRECORDSINK_H
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//  End of File