mpserviceplugins/m3uplaylistplugin/src/mpxm3uplaylistplugin.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 14 May 2010 15:49:53 +0300
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permissions -rw-r--r--
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/*
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Implementation of m3u playlist plugin interface
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*
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*  CMPXM3uPlaylistPlugin delegates the responsibilities for m3u playlist file
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*  import and export to CMPXM3uPlaylistImporter and CMPXM3uPlaylistExporter
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*  respectively.
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*
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*
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*/
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// INCLUDE FILES
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#include <e32cmn.h>
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#include <implementationproxy.h>
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#include <mpxlog.h>
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#include <mpxmediageneraldefs.h>
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#include <mpxplaylistpluginobserver.h>
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#include "mpxm3uplaylistimporter.h"
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#include "mpxm3uplaylistexporter.h"
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#include "mpxm3uplaylistplugin.h"
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#include "mpxm3uplaylistdefs.h"
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#include "mpxm3uplaylistdefs.hrh"
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// ============================ MEMBER FUNCTIONS ==============================
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// ----------------------------------------------------------------------------
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// Constructor. 
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// ----------------------------------------------------------------------------
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CMPXM3uPlaylistPlugin::CMPXM3uPlaylistPlugin()
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    {
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    }
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// ----------------------------------------------------------------------------
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// 2nd phase constructor
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// ----------------------------------------------------------------------------
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void CMPXM3uPlaylistPlugin::ConstructL()
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    {
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    iRequiredAttributes.AppendL(KMPXMediaGeneralUri);
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    iOptionalAttributes.AppendL(KMPXMediaGeneralTitle);
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    iOptionalAttributes.AppendL(KMPXMediaGeneralDuration);
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    }
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// ----------------------------------------------------------------------------
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// Two-phased constructor. 
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// ----------------------------------------------------------------------------
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CMPXM3uPlaylistPlugin* CMPXM3uPlaylistPlugin::NewL(TAny* /*aInitParams*/)
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    {
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    CMPXM3uPlaylistPlugin* self=new(ELeave)CMPXM3uPlaylistPlugin();
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    CleanupStack::PushL(self);
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    self->ConstructL();
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    CleanupStack::Pop(self);
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    return self;
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    }
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// ----------------------------------------------------------------------------
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// Destructor. 
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// ----------------------------------------------------------------------------
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CMPXM3uPlaylistPlugin::~CMPXM3uPlaylistPlugin()
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    {
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    delete iImporter;
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    delete iExporter;
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    iRequiredAttributes.Close();
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    iOptionalAttributes.Close();
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    }
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// ----------------------------------------------------------------------------
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// Internalize a playlist
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// ----------------------------------------------------------------------------
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void CMPXM3uPlaylistPlugin::InternalizePlaylistL(
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    TRequestStatus& aStatus,
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    const TDesC& aPlaylistUri)
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    {
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    MPX_DEBUG1("CMPXM3uPlaylistPlugin::InternalizePlaylist(aPlaylistUri)");
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    // instantiate a new CMPXM3uPlaylistImporter to handle this request.
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    delete iImporter;
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    iImporter = NULL;
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    // processing starts as soon as object is instantiated. When request completes,
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    // client is notified through MMPXPlaylistPlugibObserver interface        
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    iImporter =
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        CMPXM3uPlaylistImporter::NewL(
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            iFs, iObserver, aPlaylistUri, *iTopCharacterSet, *iAvailableCharacterSet, aStatus );
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    }
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// ----------------------------------------------------------------------------
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// Externalize a playlist
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// ----------------------------------------------------------------------------
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void CMPXM3uPlaylistPlugin::ExternalizePlaylistL(
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    TRequestStatus& aStatus,
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    const CMPXMedia& aPlaylist,
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    const TDesC& aFilePath)
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    {
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    MPX_DEBUG1("CMPXM3uPlaylistPlugin::ExternalizePlaylistL");    
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    // instantiate a new CMPXM3uPlaylistExporter to handle this request
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    delete iExporter;
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    iExporter = NULL;
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    // processing starts as soon as object is instantiated. When request completes,
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    // client is notified through MMPXPlaylistPlugibObserver interface        
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    iExporter =
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        CMPXM3uPlaylistExporter::NewL(
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            iFs, iObserver, aPlaylist, aFilePath, aStatus );
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    }
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// ----------------------------------------------------------------------------
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// Required attributes for the medias in the playlist in order to
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// externalize them to a playlist.
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// ----------------------------------------------------------------------------
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const TArray<TMPXAttribute> CMPXM3uPlaylistPlugin::RequiredAttributes() const
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    {
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    return iRequiredAttributes.Array();    
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    }
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// ----------------------------------------------------------------------------
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// Optional attributes for the medias in the playlist for externalizing
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// them to a playlist
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// ----------------------------------------------------------------------------
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const TArray<TMPXAttribute> CMPXM3uPlaylistPlugin::OptionalAttributes() const
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    {
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    return iOptionalAttributes.Array();    
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    }
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// ----------------------------------------------------------------------------
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// Returns the file extension the plugin handles
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// ----------------------------------------------------------------------------
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const TDesC& CMPXM3uPlaylistPlugin::FileExtension() const
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    {
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    return KMPXM3UExtension();
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    }
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// ----------------------------------------------------------------------------
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// cancel a client request
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// ----------------------------------------------------------------------------
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void CMPXM3uPlaylistPlugin::Cancel()
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    {
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    if ( iImporter )
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        {
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        iImporter->Cancel();
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        }
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    if ( iExporter )
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        {
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        iExporter->Cancel();
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        }
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    }
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// ========================== OTHER EXPORTED FUNCTIONS =========================
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// ----------------------------------------------------------------------------
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// The list of implementations
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// ----------------------------------------------------------------------------
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const TImplementationProxy ImplementationTable[] = 
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    { IMPLEMENTATION_PROXY_ENTRY(KMPXM3uPlaylistImplUid, CMPXM3uPlaylistPlugin::NewL) };
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// ----------------------------------------------------------------------------
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// The proxy of implementations
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// ----------------------------------------------------------------------------
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EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)
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    {
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    aTableCount=sizeof(ImplementationTable)/sizeof(TImplementationProxy);
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    return ImplementationTable;
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    }
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// End of file