mpxplugins/serviceplugins/playlistplugins/m3uplaylistplugin/src/mpxm3uplaylistplugin.cpp
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     1 /*
       
     2 * Copyright (c) 2006 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:  Implementation of m3u playlist plugin interface
       
    15 *
       
    16 *  CMPXM3uPlaylistPlugin delegates the responsibilities for m3u playlist file
       
    17 *  import and export to CMPXM3uPlaylistImporter and CMPXM3uPlaylistExporter
       
    18 *  respectively.
       
    19 *
       
    20 *
       
    21 */
       
    22 
       
    23 
       
    24 // INCLUDE FILES
       
    25 #include <e32cmn.h>
       
    26 #include <implementationproxy.h>
       
    27 #include <mpxlog.h>
       
    28 #include <mpxmediageneraldefs.h>
       
    29 #include <mpxplaylistpluginobserver.h>
       
    30 #include "mpxm3uplaylistimporter.h"
       
    31 #include "mpxm3uplaylistexporter.h"
       
    32 #include "mpxm3uplaylistplugin.h"
       
    33 #include "mpxm3uplaylistdefs.h"
       
    34 #include "mpxm3uplaylistdefs.hrh"
       
    35 
       
    36     
       
    37 // ============================ MEMBER FUNCTIONS ==============================
       
    38 // ----------------------------------------------------------------------------
       
    39 // Constructor. 
       
    40 // ----------------------------------------------------------------------------
       
    41 CMPXM3uPlaylistPlugin::CMPXM3uPlaylistPlugin()
       
    42     {
       
    43     }
       
    44 
       
    45 // ----------------------------------------------------------------------------
       
    46 // 2nd phase constructor
       
    47 // ----------------------------------------------------------------------------
       
    48 void CMPXM3uPlaylistPlugin::ConstructL()
       
    49     {
       
    50     iRequiredAttributes.AppendL(KMPXMediaGeneralUri);
       
    51     
       
    52     iOptionalAttributes.AppendL(KMPXMediaGeneralTitle);
       
    53     iOptionalAttributes.AppendL(KMPXMediaGeneralDuration);
       
    54     }
       
    55     
       
    56 // ----------------------------------------------------------------------------
       
    57 // Two-phased constructor. 
       
    58 // ----------------------------------------------------------------------------
       
    59 CMPXM3uPlaylistPlugin* CMPXM3uPlaylistPlugin::NewL(TAny* /*aInitParams*/)
       
    60     {
       
    61     CMPXM3uPlaylistPlugin* self=new(ELeave)CMPXM3uPlaylistPlugin();
       
    62     CleanupStack::PushL(self);
       
    63     self->ConstructL();
       
    64     CleanupStack::Pop(self);
       
    65     return self;
       
    66     }
       
    67 
       
    68 // ----------------------------------------------------------------------------
       
    69 // Destructor. 
       
    70 // ----------------------------------------------------------------------------
       
    71 CMPXM3uPlaylistPlugin::~CMPXM3uPlaylistPlugin()
       
    72     {
       
    73     delete iImporter;
       
    74     delete iExporter;
       
    75     iRequiredAttributes.Close();
       
    76     iOptionalAttributes.Close();
       
    77     }
       
    78 
       
    79 // ----------------------------------------------------------------------------
       
    80 // Internalize a playlist
       
    81 // ----------------------------------------------------------------------------
       
    82 void CMPXM3uPlaylistPlugin::InternalizePlaylistL(
       
    83     TRequestStatus& aStatus,
       
    84     const TDesC& aPlaylistUri)
       
    85     {
       
    86     MPX_DEBUG1("CMPXM3uPlaylistPlugin::InternalizePlaylist(aPlaylistUri)");
       
    87 
       
    88     // instantiate a new CMPXM3uPlaylistImporter to handle this request.
       
    89     delete iImporter;
       
    90     iImporter = NULL;
       
    91 
       
    92     // processing starts as soon as object is instantiated. When request completes,
       
    93     // client is notified through MMPXPlaylistPlugibObserver interface        
       
    94     iImporter =
       
    95         CMPXM3uPlaylistImporter::NewL(
       
    96             iFs, iObserver, aPlaylistUri, *iTopCharacterSet, *iAvailableCharacterSet, aStatus );
       
    97     }
       
    98 
       
    99 // ----------------------------------------------------------------------------
       
   100 // Externalize a playlist
       
   101 // ----------------------------------------------------------------------------
       
   102 void CMPXM3uPlaylistPlugin::ExternalizePlaylistL(
       
   103     TRequestStatus& aStatus,
       
   104     const CMPXMedia& aPlaylist,
       
   105     const TDesC& aFilePath)
       
   106     {
       
   107     MPX_DEBUG1("CMPXM3uPlaylistPlugin::ExternalizePlaylistL");    
       
   108 
       
   109     // instantiate a new CMPXM3uPlaylistExporter to handle this request
       
   110     delete iExporter;
       
   111     iExporter = NULL;
       
   112     
       
   113     // processing starts as soon as object is instantiated. When request completes,
       
   114     // client is notified through MMPXPlaylistPlugibObserver interface        
       
   115     iExporter =
       
   116         CMPXM3uPlaylistExporter::NewL(
       
   117             iFs, iObserver, aPlaylist, aFilePath, aStatus );
       
   118     }
       
   119 
       
   120 // ----------------------------------------------------------------------------
       
   121 // Required attributes for the medias in the playlist in order to
       
   122 // externalize them to a playlist.
       
   123 // ----------------------------------------------------------------------------
       
   124 const TArray<TMPXAttribute> CMPXM3uPlaylistPlugin::RequiredAttributes() const
       
   125     {
       
   126     return iRequiredAttributes.Array();    
       
   127     }
       
   128 
       
   129 // ----------------------------------------------------------------------------
       
   130 // Optional attributes for the medias in the playlist for externalizing
       
   131 // them to a playlist
       
   132 // ----------------------------------------------------------------------------
       
   133 const TArray<TMPXAttribute> CMPXM3uPlaylistPlugin::OptionalAttributes() const
       
   134     {
       
   135     return iOptionalAttributes.Array();    
       
   136     }
       
   137 
       
   138 // ----------------------------------------------------------------------------
       
   139 // Returns the file extension the plugin handles
       
   140 // ----------------------------------------------------------------------------
       
   141 const TDesC& CMPXM3uPlaylistPlugin::FileExtension() const
       
   142     {
       
   143     return KMPXM3UExtension();
       
   144     }
       
   145 
       
   146 // ----------------------------------------------------------------------------
       
   147 // cancel a client request
       
   148 // ----------------------------------------------------------------------------
       
   149 void CMPXM3uPlaylistPlugin::Cancel()
       
   150     {
       
   151     if ( iImporter )
       
   152         {
       
   153         iImporter->Cancel();
       
   154         }
       
   155         
       
   156     if ( iExporter )
       
   157         {
       
   158         iExporter->Cancel();
       
   159         }
       
   160     }
       
   161 
       
   162 // ========================== OTHER EXPORTED FUNCTIONS =========================
       
   163 // ----------------------------------------------------------------------------
       
   164 // The list of implementations
       
   165 // ----------------------------------------------------------------------------
       
   166 const TImplementationProxy ImplementationTable[] = 
       
   167     { IMPLEMENTATION_PROXY_ENTRY(KMPXM3uPlaylistImplUid, CMPXM3uPlaylistPlugin::NewL) };
       
   168 
       
   169 // ----------------------------------------------------------------------------
       
   170 // The proxy of implementations
       
   171 // ----------------------------------------------------------------------------
       
   172 EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)
       
   173     {
       
   174     aTableCount=sizeof(ImplementationTable)/sizeof(TImplementationProxy);
       
   175     return ImplementationTable;
       
   176     }
       
   177     
       
   178 // End of file