multimediacommsengine/mmcecli/src/mceitcreceiverbase.cpp
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     1 /*
       
     2 * Copyright (c) 2005 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:    
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 
       
    20 
       
    21 
       
    22 #include "mceitcreceiverbase.h"
       
    23 #include "mceitc.h"
       
    24 #include "mceclilogs.h"
       
    25 
       
    26 
       
    27 _LIT8( KMceEmpty, "");
       
    28 
       
    29 #ifdef MCE_UNIT_TEST
       
    30 #define MCE_UNIT_TEST_RETURN { if ( aError == KErrNoMemory ) return aError; }
       
    31 #else
       
    32 #define MCE_UNIT_TEST_RETURN
       
    33 #endif
       
    34  
       
    35 // -----------------------------------------------------------------------------
       
    36 // CMceItcReceiverBase::CMceItcReceiverBase
       
    37 // -----------------------------------------------------------------------------
       
    38 //
       
    39 CMceItcReceiverBase::CMceItcReceiverBase ( MMceItc& aITC ) 
       
    40  : CActive( EPriorityStandard ),
       
    41    iITC( aITC )
       
    42 	{
       
    43     CActiveScheduler::Add ( this );
       
    44 	
       
    45 	}
       
    46 
       
    47 // -----------------------------------------------------------------------------
       
    48 // CMceItcReceiverBase::~CMceItcReceiverBase
       
    49 // -----------------------------------------------------------------------------
       
    50 //
       
    51 CMceItcReceiverBase::~CMceItcReceiverBase () 
       
    52 	{
       
    53 	CActive::Cancel();
       
    54 	}
       
    55 	
       
    56 
       
    57 // -----------------------------------------------------------------------------
       
    58 // CMceItcReceiverBase::Init
       
    59 // -----------------------------------------------------------------------------
       
    60 //
       
    61 void CMceItcReceiverBase::Init() 
       
    62 	{
       
    63 	
       
    64     iITCMsgArgs.Set (EMceItcArgIds, &iIdsPckg);
       
    65     iITCMsgArgs.Set (EMceItcArgBufSizes, &iSizesPckg);
       
    66 	
       
    67 	ReceiveNext();
       
    68 	
       
    69 	}
       
    70 
       
    71 
       
    72 // -----------------------------------------------------------------------------
       
    73 // CMceItcReceiverBase::RunL
       
    74 // -----------------------------------------------------------------------------
       
    75 //
       
    76 void CMceItcReceiverBase::RunL ()
       
    77 	{
       
    78     MCECLI_DEBUG("CMceItcReceiverBase::RunL, Entry");
       
    79 	
       
    80 	TInt err = iStatus.Int();
       
    81     MCECLI_DEBUG_DVALUE("status", err );
       
    82 	
       
    83 	if (err == KErrServerTerminated)
       
    84 		{
       
    85         MCECLI_DEBUG("unrecoverable error!");
       
    86 		// This will leave to RunError-function. See below.
       
    87 		User::Leave( err );
       
    88 		}
       
    89     // Take copy of the ids. iIdsPckg could be overwritten by ReceiveNext.
       
    90     TMceIds ids( iIdsPckg() );		
       
    91     if ( err == KErrNone )
       
    92         {
       
    93         MCECLI_DEBUG("itc received");
       
    94 		IncomingEventL( ids );
       
    95         }
       
    96     else if ( err == KErrCompletion )
       
    97         {
       
    98         MCECLI_DEBUG("itc completed");
       
    99         err = KErrNone;
       
   100         }
       
   101     else
       
   102         {
       
   103         MCECLI_DEBUG("renew itc");
       
   104         // For errors receive has to be renewed before calling the observer 
       
   105         // which might delete the CMCE or CMCEConnection, 
       
   106         // which leads to deletion of this object.
       
   107         ReceiveNext();
       
   108         ErrorOccuredL( ids, err );
       
   109         }    
       
   110     MCECLI_DEBUG("CMceItcReceiverBase::RunL, Exit");
       
   111 	}
       
   112 
       
   113 // -----------------------------------------------------------------------------
       
   114 // CMceItcReceiverBase::RunError
       
   115 // -----------------------------------------------------------------------------
       
   116 //
       
   117 TInt CMceItcReceiverBase::RunError( TInt aError )
       
   118 	{
       
   119     MCECLI_DEBUG("CMceItcReceiverBase::RunError, Entry");
       
   120     MCECLI_DEBUG_DVALUE("error", aError );
       
   121 
       
   122 	if (aError == KErrServerTerminated)
       
   123 		{
       
   124 		// Return the error to the active scheduler and stop receiving.
       
   125 		// Receiving must be stopped.
       
   126 		// It would lead to infinite RunL-RunError-loop.
       
   127 		return aError;
       
   128 		}
       
   129     // Ignore all the other errors and continue receiving
       
   130 	ReceiveNext ();
       
   131     
       
   132     MCECLI_DEBUG("CMceItcReceiverBase::RunError, Exit");
       
   133     
       
   134     MCE_UNIT_TEST_RETURN
       
   135     
       
   136 	return KErrNone;
       
   137 	}
       
   138 
       
   139 // -----------------------------------------------------------------------------
       
   140 // CMceItcReceiverBase::RunError
       
   141 // -----------------------------------------------------------------------------
       
   142 //
       
   143 void CMceItcReceiverBase::DoCancel()
       
   144     {
       
   145     MCECLI_DEBUG("CMceItcReceiverBase::DoCancel, Entry");
       
   146     
       
   147     iITC.CancelReceive( iITCMsgArgs );
       
   148 
       
   149     MCECLI_DEBUG("CMceItcReceiverBase::DoCancel, Exit");
       
   150     
       
   151     }
       
   152 
       
   153 // -----------------------------------------------------------------------------
       
   154 // CMceItcReceiverBase::ReceiveNext
       
   155 // -----------------------------------------------------------------------------
       
   156 //
       
   157 void CMceItcReceiverBase::ReceiveNext()
       
   158 	{
       
   159     MCECLI_DEBUG("CMceItcReceiverBase::ReceiveNext, Entry");
       
   160 	
       
   161 	if (!IsActive())
       
   162         {
       
   163         iITC.Receive( iITCMsgArgs,iStatus );
       
   164 	    SetActive();
       
   165         }
       
   166     MCECLI_DEBUG("CMceItcReceiverBase::ReceiveNext, Exit");
       
   167 	}
       
   168 	
       
   169 
       
   170 // -----------------------------------------------------------------------------
       
   171 // CMceItcReceiverBase::ReceiveDataLC
       
   172 // -----------------------------------------------------------------------------
       
   173 //
       
   174 void CMceItcReceiverBase::ReceiveDataLC( HBufC8*& aContext, HBufC8*& aContent )
       
   175 	{
       
   176     MCECLI_DEBUG("CMceItcReceiverBase::ReceiveDataLC, Entry");
       
   177 	
       
   178     TIpcArgs tmpITCArgs;
       
   179     TMceIds ids( iIdsPckg() );
       
   180     TPckgBuf<TMceIds> tmpIdsPckg( ids );
       
   181     tmpITCArgs.Set( EMceItcArgIds, &tmpIdsPckg );
       
   182     
       
   183     if ( iSizesPckg().iContextBufSize != KErrNotFound )
       
   184         {
       
   185         aContext = HBufC8::NewLC( iSizesPckg().iContextBufSize );
       
   186         }
       
   187         
       
   188     if ( iSizesPckg().iContentBufSize != KErrNotFound )
       
   189         {
       
   190         aContent = HBufC8::NewLC( iSizesPckg().iContentBufSize );
       
   191         }
       
   192 
       
   193     __ASSERT_ALWAYS( !( !aContext && aContent ), User::Leave( KErrGeneral ) );
       
   194     
       
   195     if ( aContext || aContent )
       
   196         {
       
   197     	MCECLI_DEBUG("CMceItcReceiverBase::ReceiveDataLC, receiving data!!") 
       
   198 
       
   199 		HBufC8* dummy = KMceEmpty().AllocLC();
       
   200         TInt err = iITC.Receive( tmpITCArgs, 
       
   201                                  ( aContext ? aContext->Des() : dummy->Des() ), 
       
   202                                  ( aContent ? aContent->Des() : dummy->Des() ) );
       
   203                                  
       
   204     	MCECLI_DEBUG("CMceItcReceiverBase::ReceiveDataLC, data received") 	
       
   205 		CleanupStack::PopAndDestroy( dummy );
       
   206 		    		        
       
   207         if ( err != KErrNone ) 
       
   208             {
       
   209     		MCECLI_DEBUG("CMceItcReceiverBase::ReceiveDataLC, receiving failed")
       
   210             User::Leave( err );
       
   211             }
       
   212         }
       
   213     MCECLI_DEBUG("CMceItcReceiverBase::ReceiveDataLC, Exit");
       
   214         
       
   215 	}
       
   216 	
       
   217 
       
   218 
       
   219 // -----------------------------------------------------------------------------
       
   220 // CMceItcReceiverBase::IncomingEventL
       
   221 // -----------------------------------------------------------------------------
       
   222 //
       
   223 void CMceItcReceiverBase::IncomingEventL( TMceIds& aIds )
       
   224     {
       
   225     MCECLI_DEBUG("CMceItcReceiverBase::IncomingEventL, Entry");
       
   226     
       
   227     HBufC8* context = NULL;
       
   228     HBufC8* content = NULL;
       
   229     TMceItcCallBack callback = static_cast<TMceItcCallBack>( aIds.iCallbackID );
       
   230     
       
   231     MCECLI_DEBUG_CALLBACK( "CALLBACK", callback );
       
   232     MCECLI_DEBUG_IDS( "IDS", aIds );
       
   233 
       
   234     ReceiveDataLC( context, content );
       
   235         
       
   236     ReceiveNext();
       
   237     
       
   238     if ( context && content )
       
   239         {
       
   240     	MCECLI_DEBUG("CMceItcReceiverBase::IncomingEventL, received both data") 	
       
   241         IncomingEventL( callback, aIds, *context, content );
       
   242         CleanupStack::Pop( content );
       
   243         CleanupStack::PopAndDestroy( context );//context
       
   244         }
       
   245     else if ( !context && !content )
       
   246         {
       
   247     	MCECLI_DEBUG("CMceItcReceiverBase::IncomingEventL, received no data") 	
       
   248         IncomingEventL( callback, aIds );
       
   249         }
       
   250     else
       
   251         {
       
   252     	MCECLI_DEBUG("CMceItcReceiverBase::IncomingEventL, received context") 	
       
   253         IncomingEventL( callback, aIds, *context );
       
   254         CleanupStack::PopAndDestroy( context );
       
   255         }
       
   256 
       
   257     MCECLI_DEBUG("CMceItcReceiverBase::IncomingEventL, Exit");
       
   258     }
       
   259