/*

* 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