sipvoipprovider/svphold/src/svpholdinestablishingstate.cpp
changeset 0 a4daefaec16c
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-1:000000000000 0:a4daefaec16c
       
     1 /*
       
     2 * Copyright (c) 2006-2008 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:  Incoming request establishing state for hold state machine.
       
    15 *
       
    16 */
       
    17  
       
    18 
       
    19 #include    "mcesession.h"
       
    20 #include    "mcemediastream.h"
       
    21 #include    "mceaudiostream.h"
       
    22 #include    "svpholdinestablishingstate.h"
       
    23 #include    "svpholdcontroller.h"
       
    24 #include    "svpholdattributehandler.h"
       
    25 #include    "svplogger.h"
       
    26 
       
    27 
       
    28 // ---------------------------------------------------------------------------
       
    29 // CSVPHoldInEstablishingState::CSVPHoldInEstablishingState
       
    30 // ---------------------------------------------------------------------------
       
    31 //
       
    32 CSVPHoldInEstablishingState::CSVPHoldInEstablishingState()
       
    33     {
       
    34     }
       
    35 
       
    36 // ---------------------------------------------------------------------------
       
    37 // CSVPHoldInEstablishingState::NewL
       
    38 // ---------------------------------------------------------------------------
       
    39 //
       
    40 CSVPHoldInEstablishingState* CSVPHoldInEstablishingState::NewLC()
       
    41     {
       
    42     CSVPHoldInEstablishingState* self = 
       
    43         new ( ELeave ) CSVPHoldInEstablishingState;
       
    44 
       
    45     CleanupStack::PushL( self );
       
    46     return self;
       
    47     }
       
    48 
       
    49 // ---------------------------------------------------------------------------
       
    50 // CSVPHoldInEstablishingState::~CSVPHoldInEstablishingState
       
    51 // ---------------------------------------------------------------------------
       
    52 //
       
    53 CSVPHoldInEstablishingState::~CSVPHoldInEstablishingState()
       
    54     {
       
    55     }
       
    56 
       
    57 // ---------------------------------------------------------------------------
       
    58 // CSVPHoldInEstablishingState::DoApplyL
       
    59 // ---------------------------------------------------------------------------
       
    60 //
       
    61 void CSVPHoldInEstablishingState::DoApplyL( CSVPHoldContext& aContext )
       
    62     {
       
    63     SVPDEBUG1( "CSVPHoldInEstablishingState::DoApply" );
       
    64 
       
    65     TSVPHoldStateIndex nextState = KSVPHoldEstablishingStateIndex; 
       
    66     
       
    67     const RPointerArray< CMceMediaStream >& streams =
       
    68         aContext.SessionObject()->Streams();
       
    69     
       
    70     const TInt streamCount = streams.Count();
       
    71     
       
    72     if ( !aContext.SpecialResponseHandling( nextState ) )
       
    73         {
       
    74         for ( TInt i = 0; i < streamCount; i++ )
       
    75             {
       
    76             CMceMediaStream* mediaStream = streams[ i ];
       
    77             if ( KMceAudio == mediaStream->Type() )
       
    78                 {
       
    79                 // This media is audio stream. Handling depends on the request
       
    80                 switch ( aContext.HoldRequest() )
       
    81                     {
       
    82                     case ESVPRemoteHold:
       
    83                         {
       
    84                         // From Connected state
       
    85                         HandleRemoteHolding( nextState );
       
    86                         break;
       
    87                         }
       
    88                         
       
    89                     case ESVPRemoteResume:
       
    90                         {
       
    91                         // From In state
       
    92                         HandleRemoteResuming( nextState );
       
    93                         break;
       
    94                         }
       
    95 
       
    96                     case ESVPRemoteDoubleHold:
       
    97                         {
       
    98                         // From Out state
       
    99                         HandleRemoteHolding( nextState,
       
   100                                              KSVPHoldDHStateIndex );
       
   101                         break;
       
   102                         }
       
   103 
       
   104                      case ESVPRemoteDoubleHoldResume:
       
   105                         {
       
   106                         // From Doublehold state
       
   107                         HandleRemoteResuming( nextState,
       
   108                                               KSVPHoldOutStateIndex );
       
   109                         break;
       
   110                         }
       
   111 
       
   112                     case ESVPLocalHold:
       
   113                     case ESVPLocalResume:
       
   114                     case ESVPLocalDoubleHold:
       
   115                     case ESVPLocalDoubleHoldResume:
       
   116                         {
       
   117                         SVPDEBUG1(
       
   118                         "CSVPHoldInEstablishingState::DoApply\
       
   119                          - Local action - State Error" );
       
   120                         User::Leave( KErrSVPHoldStateError );
       
   121                         break;
       
   122                         }
       
   123                         
       
   124                     default:
       
   125                         {
       
   126                         // Error in request solving
       
   127                         SVPDEBUG2(
       
   128                         "CSVPHoldInEstablishingState::DoApply - Error, request %i",
       
   129                                                         aContext.HoldRequest() );
       
   130                         break;
       
   131                         }
       
   132                     }
       
   133                 }
       
   134             }           
       
   135         }
       
   136 
       
   137     aContext.SetCurrentStateL( aContext, nextState );
       
   138     SVPDEBUG1( "CSVPHoldInEstablishingState::DoApply - Handled" );
       
   139     }
       
   140     
       
   141 // ---------------------------------------------------------------------------
       
   142 // CSVPHoldInEstablishingState::DoEnter
       
   143 // ---------------------------------------------------------------------------
       
   144 //
       
   145 void CSVPHoldInEstablishingState::DoEnter( CSVPHoldContext& /*aContext*/ )
       
   146     {
       
   147     // Nothing to do.
       
   148     SVPDEBUG1( "CSVPHoldInEstablishingState::DoEnter" );
       
   149     }
       
   150     
       
   151 // ---------------------------------------------------------------------------
       
   152 // CSVPHoldInEstablishingState::IsOutEstablishingStateActive
       
   153 // ---------------------------------------------------------------------------
       
   154 //
       
   155 TBool CSVPHoldInEstablishingState::IsOutEstablishingStateActive()
       
   156     {
       
   157     return EFalse;
       
   158     }
       
   159 
       
   160 // ---------------------------------------------------------------------------
       
   161 // CSVPHoldInEstablishingState::HandleRemoteHoldingL
       
   162 // ---------------------------------------------------------------------------
       
   163 //
       
   164 void CSVPHoldInEstablishingState::
       
   165 HandleRemoteHolding( TSVPHoldStateIndex& aNextState,
       
   166                      TSVPHoldStateIndex aState )
       
   167     {
       
   168     SVPDEBUG1(
       
   169     "CSVPHoldInEstablishingState::HandleRemoteHoldingL" );
       
   170     
       
   171     if ( KSVPHoldDHStateIndex == aState )
       
   172         {
       
   173         SVPDEBUG1(
       
   174         "CSVPHoldOutEstablishingState::HandleLocalHoldingL\
       
   175          - Next KSVPHoldDHStateIndex" );
       
   176         aNextState = KSVPHoldDHStateIndex;                
       
   177         }
       
   178     else
       
   179         {
       
   180         aNextState = KSVPHoldInStateIndex;
       
   181         }
       
   182             
       
   183     SVPDEBUG1(
       
   184     "CSVPHoldInEstablishingState::HandleRemoteHoldingL - Done" );
       
   185     }
       
   186 
       
   187 // ---------------------------------------------------------------------------
       
   188 // CSVPHoldInEstablishingState::HandleRemoteResumingL
       
   189 // ---------------------------------------------------------------------------
       
   190 //
       
   191 void CSVPHoldInEstablishingState::
       
   192 HandleRemoteResuming( TSVPHoldStateIndex& aNextState,
       
   193                       TSVPHoldStateIndex aState )
       
   194     {
       
   195     if ( KSVPHoldOutStateIndex == aState )
       
   196         {
       
   197         SVPDEBUG1(
       
   198         "CSVPHoldInEstablishingState::HandleRemoteResumingL KSVPHoldOutStateIndex" )
       
   199         
       
   200         aNextState = KSVPHoldOutStateIndex;
       
   201         }
       
   202     else
       
   203         {
       
   204         SVPDEBUG1(
       
   205         "CSVPHoldInEstablishingState::HandleRemoteResumingL KSVPHoldConnectedStateIndex" )
       
   206         
       
   207         aNextState = KSVPHoldConnectedStateIndex;
       
   208         }
       
   209     }
       
   210     
       
   211 // ---------------------------------------------------------------------------
       
   212 // CSVPHoldInEstablishingState::CheckAttribute
       
   213 // ---------------------------------------------------------------------------
       
   214 //
       
   215 TInt CSVPHoldInEstablishingState::
       
   216 CheckAttribute( MDesC8Array* aAttributeLines,
       
   217                 KSVPHoldAttributeIndex aNeededAttribute,
       
   218                 TSVPHoldStateIndex& aNextState,
       
   219                 CSVPHoldContext& aContext )
       
   220     {
       
   221     // Checks direction attribute from request whether it is acceptable or not.
       
   222     SVPDEBUG1( "CSVPHoldInEstablishingState::CheckAttribute" );
       
   223 
       
   224     KSVPHoldAttributeIndex requestAttribute =
       
   225         aContext.AttributeHandler().FindDirectionAttribute( aAttributeLines );
       
   226         
       
   227     if ( aNeededAttribute == requestAttribute )
       
   228         {
       
   229         return DefineDefaultCaseStateChange( aContext, aNextState );
       
   230         }
       
   231         
       
   232     else if ( KSVPHoldSendrecvIndex == aNeededAttribute &&
       
   233               KErrNotFound == requestAttribute )
       
   234         {
       
   235         // If there is no direction attribute at all, default is sendrecv
       
   236         SVPDEBUG1(
       
   237         "CSVPHoldInEstablishingState::CheckAttributeL - No attribute" );
       
   238         aNextState = KSVPHoldConnectedStateIndex;
       
   239         return KErrNone;
       
   240         }
       
   241         
       
   242     else if ( KSVPHoldSendonlyIndex == aNeededAttribute &&
       
   243               KErrNotFound == requestAttribute )
       
   244         {
       
   245         // no-op request received
       
   246         SVPDEBUG1(
       
   247         "CSVPHoldInEstablishingState::CheckAttributeL - No-op" );
       
   248         aNextState = KSVPHoldConnectedStateIndex;
       
   249         return KErrNone;
       
   250         }
       
   251         
       
   252     else
       
   253         {
       
   254         // Do not change the aNextState
       
   255         SVPDEBUG1(
       
   256         "CSVPHoldInEstablishingState::CheckAttributeL - else" );
       
   257         return KErrSVPHoldUnacceptableResponseAttribute;
       
   258         }
       
   259     }
       
   260 
       
   261 // ---------------------------------------------------------------------------
       
   262 // CSVPHoldInEstablishingState::DefineDefaultCaseStateChange
       
   263 // ---------------------------------------------------------------------------
       
   264 //
       
   265 TInt CSVPHoldInEstablishingState::
       
   266 DefineDefaultCaseStateChange( CSVPHoldContext& aContext,
       
   267                           TSVPHoldStateIndex& aNextState )
       
   268     {
       
   269     switch ( aContext.HoldRequest() )
       
   270         {
       
   271         case ESVPRemoteHold:
       
   272             {
       
   273             aNextState = KSVPHoldInStateIndex;
       
   274             return KErrNone;
       
   275             }
       
   276             
       
   277         case ESVPRemoteResume:
       
   278             {
       
   279             aNextState = KSVPHoldConnectedStateIndex;
       
   280             return KErrNone;
       
   281             }
       
   282             
       
   283         case ESVPRemoteDoubleHold:
       
   284             {
       
   285             aNextState = KSVPHoldDHStateIndex;
       
   286             return KErrNone;
       
   287             }
       
   288             
       
   289         case ESVPRemoteDoubleHoldResume:
       
   290             {
       
   291             aNextState = KSVPHoldOutStateIndex;
       
   292             return KErrNone;
       
   293             }
       
   294             
       
   295         default:
       
   296             {
       
   297             SVPDEBUG1(
       
   298             "CSVPHoldInEstablishingState::CheckAttributeL - Default" );
       
   299             return KErrSVPHoldUnacceptableResponseAttribute;
       
   300             }
       
   301         }
       
   302     }
       
   303 
       
   304