upnpframework/upnpcommand/src/upnpshowcommand.cpp
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     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:  Source file for CUpnpShowCommand class.
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 // INCLUDE FILES
       
    20 #include <upnpshowcommand.h>            // CUpnpShowCommand
       
    21 #include <upnpcommandobserver.h>        // CUpnpCommandObserver
       
    22 #include "upnpcommand.h"                // CUpnpCommand
       
    23 #include "upnpcommandmain.h"            // UpnpCommandMain::LoadL
       
    24 #include "upnpcommandcallbackadapter.h" // CUpnpCommandCallbackAdapter
       
    25 
       
    26 // --------------------------------------------------------------------------
       
    27 // CUpnpShowCommand::NewL
       
    28 // Creates a new UpnpCommand for image and video showing purposes.
       
    29 // --------------------------------------------------------------------------
       
    30 //
       
    31 EXPORT_C CUpnpShowCommand* CUpnpShowCommand::NewL()
       
    32     {
       
    33     // Create new CUpnpShowCommand instance
       
    34     CUpnpShowCommand* self = new (ELeave) CUpnpShowCommand( NULL );
       
    35     CleanupStack::PushL( self );
       
    36     self->ConstructL();
       
    37     CleanupStack::Pop( self );
       
    38     return self;
       
    39     }
       
    40 
       
    41 // --------------------------------------------------------------------------
       
    42 // CUpnpShowCommand::NewL
       
    43 // Creates a new UpnpCommand for image and video showing purposes.
       
    44 // --------------------------------------------------------------------------
       
    45 //
       
    46 EXPORT_C CUpnpShowCommand* CUpnpShowCommand::NewL(
       
    47                                         MUpnpCommandObserver* aObserver )
       
    48     {
       
    49     // Check the availability
       
    50     if( !IsAvailableL() )
       
    51         {
       
    52         User::Leave( KErrNotReady );
       
    53         }
       
    54 
       
    55     // Create new CUpnpShowCommand instance
       
    56     CUpnpShowCommand* self = new (ELeave) CUpnpShowCommand( aObserver );
       
    57     CleanupStack::PushL( self );
       
    58     self->ConstructL();
       
    59     CleanupStack::Pop( self );
       
    60     return self;
       
    61     }
       
    62 
       
    63 // --------------------------------------------------------------------------
       
    64 // CUpnpShowCommand::CUpnpShowCommand
       
    65 // Constructor
       
    66 // --------------------------------------------------------------------------
       
    67 //
       
    68 CUpnpShowCommand::CUpnpShowCommand( MUpnpCommandObserver* aObserver)
       
    69     {
       
    70     iObserver = NULL;
       
    71     if( aObserver )
       
    72         {
       
    73         iObserver = aObserver;
       
    74         }
       
    75     }
       
    76 
       
    77 // --------------------------------------------------------------------------
       
    78 // CUpnpShowCommand::~CUpnpShowCommand
       
    79 // Destructor
       
    80 // --------------------------------------------------------------------------
       
    81 //
       
    82 CUpnpShowCommand::~CUpnpShowCommand()
       
    83     {
       
    84     delete iCommand;
       
    85     iCommand = NULL;
       
    86     delete iAdapter;
       
    87     iAdapter = NULL;
       
    88     }
       
    89 
       
    90 // --------------------------------------------------------------------------
       
    91 // CUpnpShowCommand::ConstructL
       
    92 // Second phase constructor
       
    93 // --------------------------------------------------------------------------
       
    94 //
       
    95 void CUpnpShowCommand::ConstructL()
       
    96     {
       
    97     iCommand = UpnpCommandMain::LoadL( UpnpCommand::ECommandShow );
       
    98 
       
    99     // Register to observer
       
   100     if( iObserver )
       
   101         {
       
   102         iAdapter = new (ELeave) CUpnpCommandCallbackAdapter( iObserver );
       
   103         iCommand->SetObserver( iAdapter );
       
   104         }
       
   105     }
       
   106 
       
   107 // --------------------------------------------------------------------------
       
   108 // CUpnpShowCommand::StartShowingL
       
   109 // Starts showing. Allocates Upnp Framework resources.
       
   110 // --------------------------------------------------------------------------
       
   111 //
       
   112 EXPORT_C void CUpnpShowCommand::StartShowingL()
       
   113     {
       
   114     // Allocate Upnp Fw resources
       
   115     iCommand->AllocateResourcesL();
       
   116     }
       
   117 
       
   118 // --------------------------------------------------------------------------
       
   119 // CUpnpShowCommand::StopShowingL
       
   120 // Stops showing. Releases all Upnp Framework resources.
       
   121 // --------------------------------------------------------------------------
       
   122 //
       
   123 EXPORT_C void CUpnpShowCommand::StopShowingL()
       
   124     {
       
   125     // Release Upnp Fw resources
       
   126     iCommand->ReleaseResources();
       
   127 
       
   128     // Reset the file pipe
       
   129     iCommand->ResetFiles(); 
       
   130     }
       
   131 
       
   132 // --------------------------------------------------------------------------
       
   133 // CUpnpShowCommand::ShowImageL
       
   134 // Shows the given images on a remote Upnp Media Rendering device.
       
   135 // --------------------------------------------------------------------------
       
   136 //
       
   137 EXPORT_C void CUpnpShowCommand::ShowImageL( const TDesC& aFilename )
       
   138     {
       
   139     // Check param
       
   140     if( aFilename == KNullDesC )
       
   141         {
       
   142         User::Leave( KErrArgument );
       
   143         }
       
   144 
       
   145 
       
   146     // Push the filename into the parameter pipe
       
   147     iCommand->PushFileL( aFilename ); 
       
   148 
       
   149     // Execute the command
       
   150     iCommand->ExecuteL();
       
   151     }
       
   152 
       
   153 // --------------------------------------------------------------------------
       
   154 // CUpnpShowCommand::ShowVideoL
       
   155 // Shows the given video on a remote Upnp Media Rendering device.
       
   156 // --------------------------------------------------------------------------
       
   157 //
       
   158 EXPORT_C void CUpnpShowCommand::ShowVideoL( const TDesC& aFilename )
       
   159     {
       
   160     // Check param
       
   161     if( aFilename == KNullDesC )
       
   162         {
       
   163         User::Leave( KErrArgument );
       
   164         }
       
   165 
       
   166 
       
   167     // Push the filename into the file pipe
       
   168     iCommand->PushFileL( aFilename ); 
       
   169 
       
   170     // Execute the command
       
   171     iCommand->ExecuteL(); 
       
   172     }
       
   173 
       
   174 // --------------------------------------------------------------------------
       
   175 // CUpnpShowCommand::IsAvailableL
       
   176 // Returns the availability information of the command.
       
   177 // --------------------------------------------------------------------------
       
   178 //
       
   179 EXPORT_C TBool CUpnpShowCommand::IsAvailableL()
       
   180     {
       
   181     // create a temporary plugin instance
       
   182     // then query command availability.
       
   183     TBool available = EFalse;
       
   184     TRAP_IGNORE(
       
   185         CUpnpCommand* temp = UpnpCommandMain::LoadL( UpnpCommand::ECommandShow );
       
   186         CleanupStack::PushL( temp );
       
   187         available = temp->IsAvailableL();
       
   188         CleanupStack::PopAndDestroy( temp );
       
   189         );
       
   190     return available;
       
   191     }
       
   192 
       
   193 // End of File