multimediacommscontroller/mmccsubcontroller/src/mccrtpkeepalivecontainer.cpp
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     1 /*
       
     2 * Copyright (c) 2002-2008 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:    RTP Keepalive mechanism
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 
       
    20 
       
    21 // INCLUDE FILES
       
    22 #include <e32math.h>
       
    23 #include "mccrtpkeepalivecontainer.h"
       
    24 #include "mccrtpkeepalive.h"
       
    25 #include "mccdef.h"
       
    26 #include "mccinternaldef.h"
       
    27 #include "mccsubcontrollerlogs.h"
       
    28 #include "mccinternalevents.h"
       
    29 #include "mccrtpinterface.h"
       
    30 
       
    31 
       
    32 // EXTERNAL DATA STRUCTURES
       
    33 
       
    34 // EXTERNAL FUNCTION PROTOTYPES  
       
    35 
       
    36 // CONSTANTS
       
    37 
       
    38 // MACROS
       
    39 
       
    40 // LOCAL CONSTANTS AND MACROS
       
    41 
       
    42 // MODULE DATA STRUCTURES
       
    43 
       
    44 // LOCAL FUNCTION PROTOTYPES
       
    45 
       
    46 // FORWARD DECLARATIONS
       
    47 
       
    48 
       
    49 // ============================= LOCAL FUNCTIONS =============================
       
    50 
       
    51 
       
    52 // ============================ MEMBER FUNCTIONS =============================
       
    53 
       
    54 // ---------------------------------------------------------------------------
       
    55 // CMccRtpKeepaliveContainer::NewL
       
    56 // ---------------------------------------------------------------------------
       
    57 //
       
    58 CMccRtpKeepaliveContainer* CMccRtpKeepaliveContainer::NewL( 
       
    59     MAsyncEventHandler& aEventHandler,
       
    60     CRtpAPI& aRtpAPI,
       
    61     TRtpId aRtpSessionId )
       
    62     {
       
    63     CMccRtpKeepaliveContainer* self = 
       
    64         new ( ELeave ) CMccRtpKeepaliveContainer( aEventHandler,
       
    65                                                   aRtpAPI,
       
    66                                                   aRtpSessionId );
       
    67                                                   
       
    68     return self;  
       
    69     }
       
    70 
       
    71 // ---------------------------------------------------------------------------
       
    72 // CMccRtpKeepaliveContainer::~CMccRtpKeepaliveContainer
       
    73 // ---------------------------------------------------------------------------
       
    74 //        
       
    75 CMccRtpKeepaliveContainer::~CMccRtpKeepaliveContainer()
       
    76     {
       
    77     iKeepaliveHandlers.ResetAndDestroy();
       
    78     }
       
    79 
       
    80 // ---------------------------------------------------------------------------
       
    81 // CMccRtpKeepaliveContainer::StartKeepaliveL
       
    82 // ---------------------------------------------------------------------------
       
    83 //
       
    84 void CMccRtpKeepaliveContainer::StartKeepaliveL( 
       
    85     MMccRtpInterface& aUser, 
       
    86     TMccCodecInfo& aCodecInfo,
       
    87     CMccRtpMediaClock& aRtpMediaClock )
       
    88     {
       
    89     __SUBCONTROLLER( "CMccRtpKeepaliveContainer::StartKeepaliveL(), Entry" )
       
    90     
       
    91     if ( aUser.IsSink() )
       
    92         {
       
    93         iRtpSinkExist = ETrue;
       
    94         }  
       
    95             
       
    96     if ( ( aCodecInfo.iKeepaliveInterval > 0 && !iStopped ) && 
       
    97             ( aUser.IsSink() ||
       
    98             ( !aUser.IsSink() && EFalse == iRtpSinkExist ) ) )
       
    99         {
       
   100         __SUBCONTROLLER( "CMccRtpKeepaliveContainer::StartKeepaliveL(),\
       
   101         interval defined" )
       
   102 
       
   103         CMccRtpKeepalive* handler = FindKeepaliveHandler( 
       
   104             aCodecInfo.iKeepalivePT, aUser );
       
   105         if ( !handler )
       
   106             {
       
   107             handler = CMccRtpKeepalive::NewL( iEventHandler, 
       
   108                                               iRtpAPI, 
       
   109                                               iRtpSessionId, 
       
   110                                               aCodecInfo.iKeepalivePT,
       
   111                                               aCodecInfo.iKeepaliveInterval,
       
   112                                               aCodecInfo.iKeepaliveData,
       
   113                                               iRemoteAddressSet );
       
   114             CleanupStack::PushL( handler );
       
   115             iKeepaliveHandlers.AppendL( handler ); 
       
   116             CleanupStack::Pop( handler );
       
   117             }
       
   118         handler->StartKeepaliveL( aUser, aRtpMediaClock );
       
   119         }
       
   120     }
       
   121 
       
   122 // ---------------------------------------------------------------------------
       
   123 // CMccRtpKeepaliveContainer::StopKeepalive
       
   124 // ---------------------------------------------------------------------------
       
   125 //        
       
   126 TInt CMccRtpKeepaliveContainer::StopKeepalive( 
       
   127     MMccRtpInterface& aUser, 
       
   128     const TMccCodecInfo& aCodecInfo )
       
   129     {
       
   130     __SUBCONTROLLER( "CMccRtpKeepaliveContainer::StopKeepalive(), Entry" )
       
   131     TInt err( KErrNotFound );
       
   132     CMccRtpKeepalive* handler = FindKeepaliveHandler(
       
   133         aCodecInfo.iKeepalivePT, aUser );
       
   134     if ( handler )
       
   135         {
       
   136         TInt refCount( 0 );
       
   137         err = handler->StopKeepalive( aUser, refCount );
       
   138         if ( !refCount )
       
   139             {
       
   140             // No more users, can be removed
       
   141             TInt index = iKeepaliveHandlers.Find( handler );
       
   142             if ( index != KErrNotFound )
       
   143                 {
       
   144                 __SUBCONTROLLER( "CMccRtpKeepaliveContainer::StopKeepalive(),\
       
   145                 delete Handler" )
       
   146                 delete iKeepaliveHandlers[ index ];
       
   147                 iKeepaliveHandlers.Remove( index );
       
   148                 }
       
   149             }
       
   150         if ( iRtpSinkExist )
       
   151             {
       
   152             iRtpSinkExist = EFalse;            
       
   153             TInt count = iKeepaliveHandlers.Count();
       
   154             for ( TInt i = 0; i < count && !iRtpSinkExist; i++ )
       
   155                 {
       
   156                 iRtpSinkExist = iKeepaliveHandlers[ i ]->IsForSink();
       
   157                 }
       
   158             }    
       
   159         }
       
   160     return err;
       
   161     }
       
   162     
       
   163 // ---------------------------------------------------------------------------
       
   164 // CMccRtpKeepaliveContainer::ResetKeepAliveTimer
       
   165 // ---------------------------------------------------------------------------
       
   166 //    
       
   167 void CMccRtpKeepaliveContainer::ResetKeepaliveTimer()
       
   168     {
       
   169     TInt count = iKeepaliveHandlers.Count();        
       
   170     for ( TInt i = 0; i < count; i++ )
       
   171         {
       
   172         iKeepaliveHandlers[ i ]->ResetKeepaliveTimer();
       
   173         }        
       
   174     }    
       
   175 
       
   176 // ---------------------------------------------------------------------------
       
   177 // CMccRtpKeepaliveContainer::UpdateParamsL
       
   178 // ---------------------------------------------------------------------------
       
   179 //  
       
   180 void CMccRtpKeepaliveContainer::UpdateParamsL( MMccRtpInterface& aUser,
       
   181     const TMccCodecInfo& aCodecInfo )
       
   182     {
       
   183     __SUBCONTROLLER( "CMccRtpKeepaliveContainer::UpdateParamsL(), Entry" )
       
   184     
       
   185     CMccRtpKeepalive* handler = 
       
   186         FindKeepaliveHandler( aCodecInfo.iKeepalivePT, aUser );
       
   187     
       
   188     if ( handler )
       
   189         {
       
   190         // Deactivate handler because update invalidates references to the
       
   191         // previous keep-alive data.
       
   192         handler->Cancel();
       
   193         handler->UpdateParamsL( aCodecInfo.iKeepalivePT, 
       
   194             aCodecInfo.iKeepaliveInterval, aCodecInfo.iKeepaliveData );
       
   195         
       
   196         if ( aCodecInfo.iKeepaliveInterval > 0 && !handler->IsActive() )
       
   197             {
       
   198             handler->ResetKeepaliveTimer();
       
   199             }
       
   200         }
       
   201     
       
   202     __SUBCONTROLLER( "CMccRtpKeepaliveContainer::UpdateParamsL(), exit" )
       
   203     }
       
   204 
       
   205 // ---------------------------------------------------------------------------
       
   206 // CMccRtpKeepaliveContainer::StopAll
       
   207 // ---------------------------------------------------------------------------
       
   208 //    
       
   209 void CMccRtpKeepaliveContainer::StopAll()
       
   210     {
       
   211     iKeepaliveHandlers.ResetAndDestroy();
       
   212     iStopped = ETrue;
       
   213     }
       
   214 
       
   215 // ---------------------------------------------------------------------------
       
   216 // CMccRtpKeepaliveContainer::RemoteAddressSet
       
   217 // ---------------------------------------------------------------------------
       
   218 //   
       
   219 TInt CMccRtpKeepaliveContainer::RemoteAddressSet()
       
   220     {
       
   221     TInt err( KErrNotReady );
       
   222     iRemoteAddressSet = ETrue;
       
   223     if ( !iStopped )
       
   224         {
       
   225         err = KErrNone;
       
   226         for ( TInt i = 0; i < iKeepaliveHandlers.Count(); i++ )
       
   227             {
       
   228             err |= iKeepaliveHandlers[ i ]->RemoteAddressSet();
       
   229             }
       
   230         }
       
   231     return err;
       
   232     }
       
   233 
       
   234 // ---------------------------------------------------------------------------
       
   235 // CMccRtpKeepaliveContainer::FindKeepaliveHandler
       
   236 // ---------------------------------------------------------------------------
       
   237 //   
       
   238 CMccRtpKeepalive* CMccRtpKeepaliveContainer::FindKeepaliveHandler( 
       
   239     TUint8 aKeepAlivePT, MMccRtpInterface& aUser )
       
   240     {
       
   241     CMccRtpKeepalive* handler = NULL;
       
   242     for ( TInt i = 0; i < iKeepaliveHandlers.Count() && !handler; i++ )
       
   243         {
       
   244         if ( aUser.IsSink() )
       
   245             {
       
   246             if ( iKeepaliveHandlers[ i ]->StreamId() == aUser.RtpStreamId() )
       
   247                 {
       
   248                 handler = iKeepaliveHandlers[ i ];
       
   249                 }
       
   250             }
       
   251         else
       
   252             {
       
   253             if ( iKeepaliveHandlers[ i ]->PayloadType() == aKeepAlivePT )
       
   254                 {
       
   255                 handler = iKeepaliveHandlers[ i ];
       
   256                 }
       
   257             }
       
   258         }
       
   259     return handler;
       
   260     }
       
   261     
       
   262 // ---------------------------------------------------------------------------
       
   263 // CMccRtpKeepaliveContainer::CMccRtpKeepaliveContainer
       
   264 // ---------------------------------------------------------------------------
       
   265 //        
       
   266 CMccRtpKeepaliveContainer::CMccRtpKeepaliveContainer( 
       
   267     MAsyncEventHandler& aEventHandler,
       
   268     CRtpAPI& aRtpAPI,
       
   269     TRtpId aRtpSessionId ) :
       
   270     iEventHandler( aEventHandler ), 
       
   271     iRtpAPI( aRtpAPI ),
       
   272     iRtpSessionId( aRtpSessionId )
       
   273     {
       
   274     }      
       
   275 
       
   276        
       
   277 // ========================== OTHER EXPORTED FUNCTIONS =======================
       
   278 
       
   279 //  End of File