--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtengines/videoteleng/Src/State/CVtEngDtmfBuffered.cpp	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,141 @@
+/*
+* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Buffered state of DTMF sending.
+*
+*/
+
+
+
+// INCLUDE FILES
+#include    "CVtEngDtmfState.h"
+#include    "VtEngPanic.h"
+#include    <cvtlogger.h>
+
+// CONSTANTS
+const TInt KVtEngDtmfToneBufferSize = 2;
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CVtEngDtmfBuffered::NewL
+// 
+// -----------------------------------------------------------------------------
+//
+CVtEngDtmfState* CVtEngDtmfBuffered::NewL( 
+    MVtEngDtmfHandler& aDtmfHandler,
+    MVtH324ConfigCommand& aH324Config )
+    {
+    CVtEngDtmfBuffered* self = new ( ELeave ) 
+        CVtEngDtmfBuffered( aDtmfHandler, aH324Config );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop(); // self
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CVtEngDtmfBuffered::~CVtEngDtmfBuffered
+// 
+// -----------------------------------------------------------------------------
+//
+CVtEngDtmfBuffered::~CVtEngDtmfBuffered()
+    {
+    delete iTones;
+    }
+
+// -----------------------------------------------------------------------------
+// CVtEngDtmfBuffered::SendDtmfL
+// 
+// -----------------------------------------------------------------------------
+//
+void CVtEngDtmfBuffered::SendDtmfL( const TVtEngDtmfTone& aTone )
+    {
+    // just add to buffer and wait for completion of pending send operation.
+    iTones->AppendL( aTone );
+    }
+
+// -----------------------------------------------------------------------------
+// CVtEngDtmfBuffered::DtmfSendCompleteL
+// 
+// PSEUDO CODE:
+// deallocate Protocol dtmf instance
+// if ( previous_sending_OK )
+//     if ( tones_in_buffer > 1 )
+//         next_state = buffered
+//     else
+//         next_state = sending
+//     endif
+//     send tone from buffer and change state
+// endif
+// if ( previous_sending_FAIL or new_sending_FAIL )
+//     reset buffer 
+//     next_state = idle
+// endif
+//
+// -----------------------------------------------------------------------------
+//
+void CVtEngDtmfBuffered::DtmfSendCompleteL( TInt aError )
+    {
+    __VTPRINTENTER( "DtmfStateBuffered.DtmfSendCompleteL" )
+    CVtEngDtmfState::DtmfSendCompleteL( aError );
+    const TInt count( iTones->Count() );
+    __VTPRINT2( DEBUG_MEDIA , "DtmfStateBuffered.Send bufSize=%d", count )
+
+    TInt index( KErrNone );
+    if ( count && aError == KErrNone )
+        {
+        __VTPRINT2( DEBUG_MEDIA , "DtmfStateBuffered cnt=%d", count )
+        const TVtEngDtmfTone& tone = iTones->At( index );
+        MVtEngDtmfHandler::TVtEngDtmfState nextState = ( count > 1 ) ?
+            MVtEngDtmfHandler::EVtDtmfStateBuffered :
+            MVtEngDtmfHandler::EVtDtmfStateSending;
+        TRAP( aError, DoSendAndActivateStateL( tone, nextState ) );
+        iTones->Delete( index );
+        }
+    
+    if ( aError != KErrNone )
+        {
+        __VTPRINT2( DEBUG_MEDIA , "DtmfStateBuffered.failed=%d", aError )
+        // if failed clear DTMF buffer and go to dtmf idle state
+        iTones->Reset();
+        iDtmfHandler.ActivateState( MVtEngDtmfHandler::EVtDtmfStateIdle );
+        }
+    __VTPRINTEXIT( "DtmfStateBuffered.DtmfSendCompleteL" )
+    }
+
+
+// -----------------------------------------------------------------------------
+// CVtEngDtmfBuffered::CVtEngDtmfBuffered
+// 
+// -----------------------------------------------------------------------------
+//
+CVtEngDtmfBuffered::CVtEngDtmfBuffered( 
+    MVtEngDtmfHandler& aDtmfHandler,
+    MVtH324ConfigCommand& aH324Config ) 
+    : CVtEngDtmfState( aDtmfHandler, aH324Config)
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// CVtEngDtmfBuffered::ConstructL
+// 
+// -----------------------------------------------------------------------------
+//
+void CVtEngDtmfBuffered::ConstructL()
+    {
+    iTones = new ( ELeave ) 
+        CArrayFixFlat<TVtEngDtmfTone>( KVtEngDtmfToneBufferSize );
+    }
+
+//  End of File