1 /*

     2 * Copyright (c) 2007 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:  This class is used to mark and seek the inputstream. At present it is

    15 *                implemented to mark and seek to the front of the stream and not anywhere

    16 *                in the middle as the use case only demands such a beahaviour.

    17 *

    18 */

    19 

    20 

    21 package com.nokia.microedition.media;

    22 

    23 import java.io.IOException;

    24 import java.io.InputStream;

    25 

    26 /**

    27  * Class InputStreamSeekControl used to mark and seek the inputstream

    28  */

    29 public class InputStreamSeekControl implements SeekControl

    30 {

    31 

    32 

    33     private InputStream iInputStream;

    34 

    35     /**

    36      * Constructor

    37      */

    38     public InputStreamSeekControl()

    39     {

    40 

    41         iInputStream = null;

    42     }

    43 

    44     /*

    45      * Constructor

    46      * @param aInputStream - inputstream used by the InputStream class

    47      *                       that needs to be marked and streamed

    48      */

    49     public InputStreamSeekControl(InputStream aInputStream)

    50     {

    51 

    52         iInputStream = aInputStream;

    53 

    54         if (iInputStream.markSupported() == true)

    55         {

    56             iInputStream.mark(0);

    57         }

    58     }

    59 

    60     /*

    61      * Method seeks to the start of the inputstream.

    62      * @param aWhere - is ignored as the seeking takes place to

    63      *                 the begining always

    64      */

    65     public void seek(int aWhere) throws IOException

    66     {

    67 

    68 

    69         if (iInputStream.markSupported() == true)

    70         {

    71             iInputStream.reset();

    72         }

    73     }

    74 

    75     public void close()

    76     {

    77 

    78         // intentionally left blank

    79     }

    80 

    81 }