multimediacommsengine/mmcesrv/mmcemediamanager/src/mcepreparingstreams.cpp
author hgs
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/*
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* Copyright (c) 2005 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 "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:  
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*
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*/
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#include "mcepreparingstreams.h"
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#include "mcecomsession.h"
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#include "mcesdpsession.h"
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#include "mcesrvstream.h"
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#include "mceevents.h"
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#include "mcemmlogs.h"
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// -----------------------------------------------------------------------------
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// TMcePreparingStreams::TMcePreparingStreams
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// -----------------------------------------------------------------------------
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//
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TMcePreparingStreams::TMcePreparingStreams ( 
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                        CMceComSession& aSession,
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                        TMceNegotiationRole aRole,
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                        TMceSrvStreamIterator::TDirection aDirection )
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    : TMceMediaState( aSession ),
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      iIterator( TMceSrvStreamIterator( aSession.MccStreams(), aDirection ) )
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    {
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    SetRole( aRole );
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    }
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// -----------------------------------------------------------------------------
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// TMcePreparingStreams::MccLinkCreatedL
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// -----------------------------------------------------------------------------
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//
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void TMcePreparingStreams::MccLinkCreatedL( TMceMccComEvent& aEvent )
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    {
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    MCEMM_DEBUG("TMcePreparingStreams::MccLinkCreatedL(), Entry ");
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    CMceSrvStream::EventReceived( iSession.MccStreams(), aEvent );
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    CMceSrvStream* stream = NULL;
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    iIterator.Reset();
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    //try to find first stream, which is in state 'greater or equal' than link created
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    //if no stream => all streams are in state link created
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    //=> links are created
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    if ( !iIterator.Next( stream, CMceSrvStream::ECreatingLink, 
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                          TMceSrvStreamIterator::ExactMatch ) )
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        {
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        PrepareStreamsL();
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        }
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    else
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        {
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        MCEMM_DEBUG("TMcePreparingStreams::MccLinkCreatedL(): \
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waiting links to be created");
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        //just wait
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        }
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    MCEMM_DEBUG("TMcePreparingStreams::MccLinkCreatedL(), Exit ");
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    }
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// -----------------------------------------------------------------------------
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// TMcePreparingStreams::MccMediaPreparedL
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// -----------------------------------------------------------------------------
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//
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void TMcePreparingStreams::MccMediaPreparedL( TMceMccComEvent& aEvent )
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    {
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    MCEMM_DEBUG("TMcePreparingStreams::MccMediaPreparedL(), Entry ");
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    CMceSrvStream::EventReceived( iSession.MccStreams(), aEvent );
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    CMceSrvStream* stream = NULL;
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    iIterator.Reset();
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    //try to find first stream, which is in state 'greater or equal' than prepared
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    //if no stream => all streams are in state prepared or stopped (or started, paused) 
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    //=> streams are prepared        
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    if ( !iIterator.Next( stream, CMceSrvStream::EPreparing, 
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                          TMceSrvStreamIterator::ExactMatch ) )
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        {
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        StreamsPreparedL();
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        }
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    else
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        {
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        MCEMM_DEBUG("TMcePreparingStreams::MccMediaPreparedL(): \
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waiting streams to be prepared");
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        //just wait
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        }
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    MCEMM_DEBUG("TMcePreparingStreams::MccMediaPreparedL(), Exit ");
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    }
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// -----------------------------------------------------------------------------
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// TMcePreparingStreams::MccMediaStartedL
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// -----------------------------------------------------------------------------
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//
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void TMcePreparingStreams::MccMediaStartedL( TMceMccComEvent& aEvent )
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    {
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    MCEMM_DEBUG("TMcePreparingStreams::MccMediaStartedL(), Entry ");
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    CMceSrvStream::EventReceived( iSession.MccStreams(), aEvent );
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    CMceSrvStream* stream = NULL;
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    iIterator.Reset();
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    //try to find first stream, which is in state 'greater or equal' than stopped
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    //if no stream => all streams are in state stopped, started or paused
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    if ( !iIterator.Next( stream, CMceSrvStream::EStarting, 
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                          TMceSrvStreamIterator::ExactMatch ) )
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        {
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        StreamsStartedL();
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        }
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    else
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        {
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        MCEMM_DEBUG("TMcePreparingStreams::MccMediaStartedL(): \
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waiting streams to be started");
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        //just wait
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        }
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    MCEMM_DEBUG("TMcePreparingStreams::MccMediaStartedL(), Exit ");
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    }
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// -----------------------------------------------------------------------------
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// TMcePreparingStreams::MccMediaPausedL
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// -----------------------------------------------------------------------------
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//
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void TMcePreparingStreams::MccMediaPausedL( TMceMccComEvent& aEvent )
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    {
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    MCEMM_DEBUG("TMcePreparingStreams::MccMediaPausedL(), Entry ");
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    MccMediaStartedL( aEvent );
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    MCEMM_DEBUG("TMcePreparingStreams::MccMediaPausedL(), Exit ");
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    }
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// -----------------------------------------------------------------------------
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// TMcePreparingStreams::MccMediaResumedL
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// -----------------------------------------------------------------------------
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//
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void TMcePreparingStreams::MccMediaResumedL( TMceMccComEvent& aEvent )
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    {
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    MCEMM_DEBUG("TMcePreparingStreams::MccMediaResumedL(), Entry ");
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    MccMediaStartedL( aEvent );
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    MCEMM_DEBUG("TMcePreparingStreams::MccMediaResumedL(), Exit ");
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    }
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// -----------------------------------------------------------------------------
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// TMcePreparingStreams::PrepareStreamsL
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// -----------------------------------------------------------------------------
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//
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void TMcePreparingStreams::PrepareStreamsL()
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    {
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    MCEMM_DEBUG("TMcePreparingStreams::PrepareStreamsL(), Entry ");
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    CMceSrvStream* stream = NULL;
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    TBool wait = EFalse;
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    iIterator.Reset();
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    while( iIterator.Next( stream, CMceSrvStream::ECreated ) )
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        {
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        MCEMM_DEBUG_STREAM( "TMcePreparingStreams::PrepareStreamsL(): \
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create link", *stream );
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        iSession.SdpSession().Manager().CreateMccLinkL( *stream );
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        wait = !wait ? stream->State() != CMceSrvStream::ELinkCreated : wait;
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        }
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    if ( !wait )
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        {
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        iIterator.Reset();
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        wait = EFalse;
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        while( iIterator.Next( stream, CMceSrvStream::ELinkCreated ) )
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            {
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            MCEMM_DEBUG_STREAM( "TMcePreparingStreams::PrepareStreamsL(): \
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create stream", *stream );
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            iSession.SdpSession().Manager().CreateMccStreamL( *stream, iRole );
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            }
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   202
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        iIterator.Reset();
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        wait = EFalse;
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        while( iIterator.Next( stream, CMceSrvStream::ELinkCreated ) )
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            {
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            MCEMM_DEBUG_STREAM( "TMcePreparingStreams::PrepareStreamsL(): \
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prepare stream", *stream );
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            iSession.SdpSession().Manager().PrepareMccStreamL( *stream, iRole );
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            wait = !wait ? stream->State() != CMceSrvStream::EPrepared : wait;
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            }
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        if (!wait)
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            {
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            MCEMM_DEBUG("TMcePreparingStreams::PrepareStreamsL(): streams prepared");
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            StreamsPreparedL();
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            }
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        }
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    MCEMM_DEBUG("TMcePreparingStreams::PrepareStreamsL(), Exit ");
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    }
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// -----------------------------------------------------------------------------
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// TMcePreparingStreams::StartStreamsL
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// -----------------------------------------------------------------------------
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//
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void TMcePreparingStreams::StartStreamsL( TBool aUpdateRemoteAddress )
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    {
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    MCEMM_DEBUG( "TMcePreparingStreams::StartStreamsL(), Entry" )
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    // Hardware does not necessarily support two simulataneous mic users so
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    // it is more safe to do pausing of old send stream before starting the
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    // new one. This can be achieved by traversing streams in reverse order
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    // as they are in priority order and new send stream has higher priority.
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    //
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    RPointerArray<CMceSrvStream>& origStreams = iSession.MccStreams();
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    RPointerArray<CMceSrvStream> reverseOrderStream;
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    CleanupClosePushL( reverseOrderStream );
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    TInt lastIndex( origStreams.Count() - 1 );
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    for ( TInt i = lastIndex; i >= 0; i-- )
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        {
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        reverseOrderStream.AppendL( origStreams[ i ] );
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        }
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    TMceSrvStreamIterator reversedIterator( reverseOrderStream, 
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        iIterator.Direction() );
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    TBool wait = EFalse;
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    CMceSrvStream* stream = NULL;
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    while( reversedIterator.Next( stream, CMceSrvStream::EPrepared, 
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                            TMceSrvStreamIterator::GreaterOrEqualMatch ) )
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        {
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        const CMceSrvStream::TState state = stream->State();
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        if ( state == CMceSrvStream::EPrepared &&
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             stream->Codec().iIsEnabled )
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            {
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            MCEMM_DEBUG_STREAM( "TMcePreparingStreams::StartStreamsL() start stream",
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                *stream )
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            iSession.SdpSession().Manager().StartMccStreamL( *stream );
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            wait = !wait ? stream->State() == CMceSrvStream::EStarting : wait;
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            }
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        else if ( aUpdateRemoteAddress )
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            {
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            MCEMM_DEBUG( "TMcePreparingStreams::StartStreamsL() remote address update" )
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            iSession.SdpSession().Manager().SetRemoteAddressL( *stream );
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            }
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        else
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            {
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            // NOP
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            }
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        MCEMM_DEBUG_STREAM( "TMcePreparingStreams::StartStreamsL() synchronize stream",
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            *stream )
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        iSession.SdpSession().Manager().SynchronizeMccStreamL( *stream, iRole );    
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        }
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    if ( !wait )
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        {
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        MCEMM_DEBUG( "TMcePreparingStreams::StartStreamsL(): streams started" )
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        StreamsStartedL();
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        }
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    CleanupStack::PopAndDestroy( &reverseOrderStream );
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    MCEMM_DEBUG( "TMcePreparingStreams::StartStreamsL(), Exit" )
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    }
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