videoplayback/videohelix/src/mpxvideoaccessoryobserver.cpp
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     1 /*
       
     2 * Copyright (c) 2008 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 observes the accessory framework.
       
    15  *
       
    16 */
       
    17 
       
    18 // Version : %version: 6 %
       
    19 
       
    20 //
       
    21 //  INCLUDE FILES
       
    22 //
       
    23 #include <e32svr.h>
       
    24 #include <AccPolSubblockNameArray.h>
       
    25 
       
    26 #include "mpxvideoaccessoryobserver.h"
       
    27 #include "mpxvideoplaybackcontroller.h"
       
    28 #include "mpxvideo_debug.h"
       
    29 
       
    30 //
       
    31 // ============================ MEMBER FUNCTIONS ===================================================
       
    32 //
       
    33 
       
    34 // -------------------------------------------------------------------------------------------------
       
    35 //   CMPXVideoAccessoryObserver::NewL
       
    36 //   Two-phased constructor.
       
    37 // -------------------------------------------------------------------------------------------------
       
    38 //
       
    39 CMPXVideoAccessoryObserver*
       
    40 CMPXVideoAccessoryObserver::NewL( CMPXVideoPlaybackController* aController )
       
    41 {
       
    42     MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::NewL()"));
       
    43 
       
    44     CMPXVideoAccessoryObserver* self = new (ELeave) CMPXVideoAccessoryObserver( aController );
       
    45     CleanupStack::PushL( self );
       
    46     self->ConstructL();
       
    47     CleanupStack::Pop( self );
       
    48     return self;
       
    49 }
       
    50 
       
    51 // -------------------------------------------------------------------------------------------------
       
    52 //   CMPXVideoAccessoryObserver::ConstructL
       
    53 //   Symbian 2nd phase constructor can leave
       
    54 // -------------------------------------------------------------------------------------------------
       
    55 //
       
    56 void CMPXVideoAccessoryObserver::ConstructL()
       
    57 {
       
    58     MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::ConstructL()"));
       
    59 
       
    60 #ifdef __ACCESSORY_FW
       
    61     User::LeaveIfError( iServer.Connect() );
       
    62     User::LeaveIfError( iConnection.CreateSubSession( iServer ) );
       
    63 
       
    64     //
       
    65     //  Get initial accessory status synchronously
       
    66     //
       
    67     iConnection.GetAccessoryConnectionStatus( iGenericIdArray );
       
    68 #endif
       
    69 
       
    70     //
       
    71     //  This will set check if a TV-Out accessory has been connected
       
    72     //  and initialize the member variable
       
    73     //
       
    74     UpdateTvOutStatusL();
       
    75 
       
    76     StartMonitoringL();
       
    77 }
       
    78 
       
    79 // -------------------------------------------------------------------------------------------------
       
    80 //   CMPXVideoAccessoryObserver::CMPXVideoAccessoryObserver
       
    81 // -------------------------------------------------------------------------------------------------
       
    82 //
       
    83 CMPXVideoAccessoryObserver::CMPXVideoAccessoryObserver( CMPXVideoPlaybackController* aController )
       
    84     : CActive( CActive::EPriorityStandard )
       
    85     , iController( aController )
       
    86     , iTvOutConnected( EFalse )
       
    87     , iTvOutPlaybackAllowed( ETrue )
       
    88 {
       
    89     CActiveScheduler::Add( this );
       
    90 }
       
    91 
       
    92 // -------------------------------------------------------------------------------------------------
       
    93 //   CMPXVideoAccessoryObserver::~CMPXVideoAccessoryObserver
       
    94 // Destructor, close and release the handles.
       
    95 // -------------------------------------------------------------------------------------------------
       
    96 //
       
    97 CMPXVideoAccessoryObserver::~CMPXVideoAccessoryObserver()
       
    98 {
       
    99     MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::~CMPXVideoAccessoryObserver()"));
       
   100 
       
   101     Cancel();
       
   102 
       
   103 #ifdef __ACCESSORY_FW
       
   104     iConnection.CloseSubSession();
       
   105     iServer.Disconnect();
       
   106 #endif
       
   107 }
       
   108 
       
   109 // -------------------------------------------------------------------------------------------------
       
   110 //   CMPXVideoAccessoryObserver::StartMonitoringL
       
   111 // -------------------------------------------------------------------------------------------------
       
   112 //
       
   113 void CMPXVideoAccessoryObserver::StartMonitoringL()
       
   114 {
       
   115     MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::StartMonitoringL()"));
       
   116 
       
   117     if ( ! IsActive() )
       
   118     {
       
   119 #ifdef __ACCESSORY_FW
       
   120         iConnection.NotifyAccessoryConnectionStatusChanged( iStatus, iGenericIdArray );
       
   121 #endif
       
   122 
       
   123         SetActive();
       
   124     }
       
   125 }
       
   126 
       
   127 // -------------------------------------------------------------------------------------------------
       
   128 //   CMPXVideoAccessoryObserver::UpdateTvOutStatusL
       
   129 // -------------------------------------------------------------------------------------------------
       
   130 //
       
   131 TBool CMPXVideoAccessoryObserver::UpdateTvOutStatusL()
       
   132 {
       
   133     MPX_DEBUG(_L("CMPXVideoAccessoryObserver::UpdateTvOutStatusL()"));
       
   134 
       
   135     TBool statusChanged = EFalse;
       
   136 
       
   137     //
       
   138     //  Initialize TV-Out value to EFalse before checking if
       
   139     //  accessories support TV-Out
       
   140     //
       
   141     TBool tvOutConnected = EFalse;
       
   142 
       
   143 #ifdef __ACCESSORY_FW
       
   144     CAccPolSubblockNameArray* nameArray = CAccPolSubblockNameArray::NewL();
       
   145     CleanupStack::PushL( nameArray );
       
   146 
       
   147     //
       
   148     //  Get the number of currently connected accessories
       
   149     //  Loop through each connected accessory looking for
       
   150     //  the desired capabilities
       
   151     //
       
   152     const TInt count = iGenericIdArray.Count();
       
   153 
       
   154     for ( TInt index = 0 ; index < count ; index++ )
       
   155     {
       
   156         //
       
   157         //  Get all supported capabilities for this connected accessory.
       
   158         //
       
   159         iConnection.GetSubblockNameArrayL( iGenericIdArray.GetGenericIDL( index ), *nameArray );
       
   160 
       
   161         //
       
   162         //  Check if this connected accessory supports TV-Out
       
   163         //
       
   164         if ( nameArray->HasName( KAccVideoOut ) )
       
   165         {
       
   166             MPX_DEBUG(_L("    TV-Out Capabilities Exist"));
       
   167 
       
   168             tvOutConnected = ETrue;
       
   169             break;
       
   170         }
       
   171     }
       
   172 
       
   173     CleanupStack::PopAndDestroy( nameArray );
       
   174 #endif
       
   175 
       
   176     //
       
   177     //  Check if the TV-Out status has changed
       
   178     //
       
   179     if ( iTvOutConnected != tvOutConnected )
       
   180     {
       
   181         iTvOutConnected = tvOutConnected;
       
   182 
       
   183         if ( iTvOutConnected )
       
   184         {
       
   185             //
       
   186             //  Check the playablility of the clip
       
   187             //
       
   188             iTvOutPlaybackAllowed = iController->iPlaybackMode->IsTvOutAllowedL();
       
   189         }
       
   190         else
       
   191         {
       
   192             iTvOutPlaybackAllowed = ETrue;
       
   193         }
       
   194 
       
   195         statusChanged   = ETrue;
       
   196     }
       
   197 
       
   198     MPX_DEBUG(_L("    iTvOutConnected = %d"), iTvOutConnected);
       
   199 
       
   200     MPX_DEBUG(_L("CMPXVideoAccessoryObserver::UpdateTvOutStatusL() ret = %d"), statusChanged);
       
   201 
       
   202     return statusChanged;
       
   203 }
       
   204 
       
   205 // -----------------------------------------------------------------------------
       
   206 //   CMPXVideoAccessoryObserver::RunL
       
   207 // -----------------------------------------------------------------------------
       
   208 //
       
   209 void CMPXVideoAccessoryObserver::RunL()
       
   210 {
       
   211     MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::RunL()"),
       
   212                    _L("iStatus = %d"), iStatus.Int());
       
   213 
       
   214 #ifdef __ACCESSORY_FW
       
   215     if ( KErrNone == iStatus.Int() )
       
   216     {
       
   217         //
       
   218         //  Check for TV-Out status change
       
   219         //  If a changed, issue notice to the observer
       
   220         //
       
   221         if ( UpdateTvOutStatusL() )
       
   222         {
       
   223             iController->HandleTvOutEventL( iTvOutConnected );
       
   224         }
       
   225     }
       
   226 #endif
       
   227 
       
   228     //
       
   229     //  Renew request for accessory events
       
   230     //
       
   231     StartMonitoringL();
       
   232 }
       
   233 
       
   234 // -----------------------------------------------------------------------------
       
   235 //   CMPXVideoAccessoryObserver::DoCancel
       
   236 // -----------------------------------------------------------------------------
       
   237 //
       
   238 void CMPXVideoAccessoryObserver::DoCancel()
       
   239 {
       
   240     MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::DoCancel()"));
       
   241 
       
   242 #ifdef __ACCESSORY_FW
       
   243     iConnection.CancelNotifyAccessoryConnectionStatusChanged();
       
   244 #endif
       
   245 }
       
   246 
       
   247 // -----------------------------------------------------------------------------
       
   248 //   CMPXVideoAccessoryObserver::RunError
       
   249 // -----------------------------------------------------------------------------
       
   250 //
       
   251 TInt CMPXVideoAccessoryObserver::RunError( TInt aError )
       
   252 {
       
   253     MPX_ENTER_EXIT(_L("CMPXVideoAccessoryObserver::RunError()"),
       
   254                    _L("aError = %d"), aError);
       
   255 
       
   256 #ifdef __ACCESSORY_FW
       
   257     //
       
   258     //  Error occurred, issue new request for accessory status
       
   259     //
       
   260     iConnection.NotifyAccessoryConnectionStatusChanged( iStatus, iGenericIdArray );
       
   261 #endif
       
   262 
       
   263     return KErrNone;
       
   264 }
       
   265 
       
   266 // -------------------------------------------------------------------------------------------------
       
   267 //   CMPXVideoAccessoryObserver::IsTvOutConnected
       
   268 // -------------------------------------------------------------------------------------------------
       
   269 //
       
   270 TBool CMPXVideoAccessoryObserver::IsTvOutConnected()
       
   271 {
       
   272     MPX_DEBUG(_L("CMPXVideoAccessoryObserver::IsTvOutConnected(%d)"), iTvOutConnected);
       
   273 
       
   274     return iTvOutConnected;
       
   275 }
       
   276 
       
   277 // -------------------------------------------------------------------------------------------------
       
   278 //   CMPXVideoAccessoryObserver::IsTvOutPlaybackAllowed
       
   279 // -------------------------------------------------------------------------------------------------
       
   280 //
       
   281 TBool CMPXVideoAccessoryObserver::IsTvOutPlaybackAllowed()
       
   282 {
       
   283     TBool playAllowed = ( ! iTvOutConnected || iTvOutPlaybackAllowed );
       
   284     MPX_DEBUG(_L("CMPXVideoAccessoryObserver::IsTvOutPlaybackAllowed(%d)"), playAllowed);
       
   285 
       
   286     return playAllowed;
       
   287 }
       
   288 
       
   289 //  End of File