/*

* Copyright (c) 2009 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: 

*

*/

using System;

using System.Collections.Generic;

using System.Text;

using SymbianUtils.BasicTypes;

using SymbianETMLib.Common.Types;

namespace SymbianETMLib.Common.State

{

    public class ETMDecodeStateUnsynchronized : ETMDecodeState

    {

        #region Constructors

        public ETMDecodeStateUnsynchronized( ETMStateData aManager )

            : base( aManager )

        {

        }

        #endregion

        #region API

        public override ETMDecodeState HandleByte( SymByte aByte )

        {

            ETMDecodeState nextState = this;

            //

            if ( aByte == 0 )

            {

                ++iASyncConsecutiveNullByteCount;

            }

            else if ( aByte == 0x80 && iASyncConsecutiveNullByteCount == 5 )

            {

                // That's the start of the a-sync packet

                iASyncConsecutiveNullByteCount = 0;

                base.StateData.SetSynchronized();

                nextState = new ETMDecodeStateSynchronized( base.StateData );

                Trace();

            }

            else

            {

                iASyncConsecutiveNullByteCount = 0;

                base.StateData.SetUnsynchronized();

            }

            //

            return nextState;

        }

        #endregion

        #region Properties

        #endregion

        #region Internal methods

        private void Trace()

        {

            base.DbgTrace( "A-SYNC" );

        }

        #endregion

        #region From System.Object

        #endregion

        #region Data members

        private int iASyncConsecutiveNullByteCount = 0;

        #endregion

    }

}