1 /*

     2 * Copyright (c) 2009 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 using System;

    19 using System.Collections.Generic;

    20 using System.Text;

    21 using SymbianUtils.BasicTypes;

    22 using SymbianETMLib.Common.Types;

    23 

    24 namespace SymbianETMLib.Common.State

    25 {

    26     public class ETMDecodeStateUnsynchronized : ETMDecodeState

    27     {

    28         #region Constructors

    29         public ETMDecodeStateUnsynchronized( ETMStateData aManager )

    30             : base( aManager )

    31         {

    32         }

    33         #endregion

    34 

    35         #region API

    36         public override ETMDecodeState HandleByte( SymByte aByte )

    37         {

    38             ETMDecodeState nextState = this;

    39             //

    40             if ( aByte == 0 )

    41             {

    42                 ++iASyncConsecutiveNullByteCount;

    43             }

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

    45             {

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

    47                 iASyncConsecutiveNullByteCount = 0;

    48                 base.StateData.SetSynchronized();

    49                 nextState = new ETMDecodeStateSynchronized( base.StateData );

    50                 Trace();

    51             }

    52             else

    53             {

    54                 iASyncConsecutiveNullByteCount = 0;

    55                 base.StateData.SetUnsynchronized();

    56             }

    57             //

    58             return nextState;

    59         }

    60         #endregion

    61 

    62         #region Properties

    63         #endregion

    64 

    65         #region Internal methods

    66         private void Trace()

    67         {

    68             base.DbgTrace( "A-SYNC" );

    69         }

    70         #endregion

    71 

    72         #region From System.Object

    73         #endregion

    74 

    75         #region Data members

    76         private int iASyncConsecutiveNullByteCount = 0;

    77         #endregion

    78     }

    79 }