1 /*

     2 * Copyright (c) 2002 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:  file protocol

    15 *

    16 */

    17 

    18 

    19 package com.nokia.microedition.media.protocol.file;

    20 

    21 import javax.microedition.media.MediaException;

    22 

    23 import com.nokia.microedition.media.Locator;

    24 import com.nokia.microedition.media.InternalPlayer;

    25 import com.nokia.microedition.media.ManagerImpl;

    26 import com.nokia.microedition.media.NativePlayerFactory;

    27 import com.nokia.microedition.media.ConnectorDataSource;

    28 import com.nokia.microedition.media.tone.TonePlayer;

    29 import javax.microedition.io.file.FileConnection;

    30 import javax.microedition.io.Connector;

    31 import java.io.IOException;

    32 

    33 

    34 /**

    35  * This class presents file protocol

    36  */

    37 public class Protocol implements

    38         com.nokia.microedition.media.protocol.Protocol

    39 {

    40     private static final String FILE = "file://";

    41     private static final String DRM_SUFFIX = "dcf";

    42     private static final String DRM_PARAMS = "?drm=enc";

    43     private static final String JTS_SUFFIX = "jts";

    44     /**

    45      * Default constructor.

    46      */

    47     public Protocol()

    48     {

    49     }

    50 

    51     /**

    52      * From interface Protocol

    53      * @see Protocol

    54      */

    55     public InternalPlayer createPlayer(Locator aLocator)

    56     throws java.io.IOException,

    57                 MediaException,

    58                 java.lang.SecurityException

    59     {

    60         FileConnection fileConnection = null;

    61         try

    62         {

    63             if ((aLocator.getParameters() == null) &&

    64                     (aLocator.getMiddlePart().endsWith(DRM_SUFFIX)

    65                     ))

    66             {

    67                 // DRM file, adding parameters to locator

    68                 fileConnection = (FileConnection)Connector.open(aLocator.getLocatorString(),Connector.READ);

    69             }

    70             else if (aLocator.getMiddlePart().endsWith(JTS_SUFFIX))

    71             {

    72                 // JTS file, this format is handled in Java side, so creating player in traditional way

    73                 ConnectorDataSource dataSource = new ConnectorDataSource(aLocator);

    74                 return new TonePlayer(dataSource);

    75             }

    76             else

    77             {

    78                 fileConnection = (FileConnection)Connector.open(aLocator.getLocatorString(),

    79                                  Connector.READ);

    80             }

    81             String fileAndPath  = getPathAndFileName(fileConnection);

    82             Locator newLocator = new Locator(fileAndPath);

    83             return NativePlayerFactory.createPlayer(newLocator, null);

    84         }

    85         finally

    86         {

    87             if (null != fileConnection)

    88             {

    89                 fileConnection.close();

    90             }

    91         }

    92     }

    93 

    94     /**

    95      * Internal operation to construct path + fileName from the URI of the file.

    96      * Note: This operation removes parameter of the URI just like old

    97      * FileConnectionImpl.getPathAndFileName() operation (used in older releases).

    98      */

    99     private String getPathAndFileName(FileConnection aFileConn)

   100     {

   101         String path = aFileConn.getPath();

   102         // Path always starts with '/' character. This has to be skipped away because

   103         // otherwise this is converted to '\\' below. FILE constant contains this first

   104         // character('/') of the path.

   105         path = path.substring(1);

   106         String pathAndFileName = path + aFileConn.getName();

   107         pathAndFileName = pathAndFileName.replace('/','\\');

   108         return FILE + pathAndFileName;

   109     }

   110 }