--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/multimediacommscontroller/mmccvideosourcesink/src/mccvideosourcekeyretriever.cpp	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,334 @@
+/*
+* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:    
+*
+*/
+
+
+
+// INCLUDE FILES
+#include "mccvideosourcekeyretriever.h"
+#include "mccinternalcodecs.h"
+#include "mccinternaldef.h"
+#include "mccinternalevents.h"
+#include "mccvideosourceimpl.h"
+#include "mccvideosourcesinklogs.h"
+#include "mccperiodicrunner.h"
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::NewLC
+// -----------------------------------------------------------------------------
+//
+CMccVideoSourceConfigKeyRetriever* CMccVideoSourceConfigKeyRetriever::NewLC( 
+    MMccCameraHandler& aCameraHandler )
+    {
+    CMccVideoSourceConfigKeyRetriever* self = 
+        new ( ELeave ) CMccVideoSourceConfigKeyRetriever( aCameraHandler );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::~CMccVideoSourceConfigKeyRetriever
+// -----------------------------------------------------------------------------
+//    
+CMccVideoSourceConfigKeyRetriever::~CMccVideoSourceConfigKeyRetriever()
+    {
+    __V_SOURCESINK_CONTROLL( 
+    "CMccVideoSourceConfigKeyRetriever::~CMccVideoSourceConfigKeyRetriever" )
+    
+    delete iGuardTimer;
+    
+    StopWaiting();
+
+    delete iWait;
+    
+    delete iSource;
+    
+    delete iBuffer;
+    
+    __V_SOURCESINK_CONTROLL( 
+    "CMccVideoSourceConfigKeyRetriever::~CMccVideoSourceConfigKeyRetriever, exit" )
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::RetrieveL
+// -----------------------------------------------------------------------------
+//    
+void CMccVideoSourceConfigKeyRetriever::RetrieveL( 
+    const TMccCodecInfo& aVideoCodec, 
+    TDes8& aConfigKey )
+    {
+    __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::RetrieveL" )
+    
+    __ASSERT_ALWAYS( aVideoCodec.iSdpName.CompareF( KAVCSdpName ) == 0, 
+                     User::Leave( KErrNotSupported ) );
+    
+    delete iBuffer;
+    iBuffer = NULL;
+    iBuffer = CMMFDataBuffer::NewL( aVideoCodec.iFrameSize );
+        
+    delete iSource;
+    iSource = NULL;
+    iSource = CMccVideoSourceImpl::NewL( 0, NULL, ETrue );
+    
+    iFailed = EFalse;
+
+    iSource->SourceThreadLogon( *this );
+    iSource->SetCameraHandler( iCameraHandler );
+    iSource->SetVideoCodecL( aVideoCodec );
+    iSource->SourcePrimeL( EFalse );
+
+    if ( !iSource->HasConfigKey() && !iFailed )
+        {
+        __V_SOURCESINK_CONTROLL( "Start waiting for key" )
+        
+        // Start also guard timer to prevent possible eternal jam
+        StartGuardTimer();
+        
+        iWait->Start();
+    
+        __V_SOURCESINK_CONTROLL( "Waiting completed" )
+        StopGuardTimer();
+        }
+    
+    __ASSERT_ALWAYS( !iFailed, User::Leave( KErrNotFound ) );
+    
+    iSource->GetConfigKeyL( aVideoCodec, aConfigKey, EFalse );
+    
+    __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::RetrieveL, exit" )
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::SendEventToClient
+// -----------------------------------------------------------------------------
+//           
+TInt CMccVideoSourceConfigKeyRetriever::SendEventToClient( const TMMFEvent& aEvent )
+    {
+    __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::SendEventToClient" )
+    
+    TInt error( KErrNone );
+   	TMccEvent* mccEventPtr = NULL;
+	if ( IS_MCC_EVENT( aEvent ) )
+	    {
+	    mccEventPtr = 
+	        reinterpret_cast<const TMccInternalEvent&>( aEvent ).iMccEvent;                                     
+	    }
+	
+	if ( mccEventPtr )
+	    {
+	    TRAP( error, HandleEventL( *mccEventPtr ) );
+	    if ( error != KErrNone )
+	        {
+	        HandleError();
+	        }
+	    }
+	    
+	__V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::SendEventToClient, exit" )    
+	
+	return error;
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::SinkDataTypeCode
+// -----------------------------------------------------------------------------
+//    
+TFourCC CMccVideoSourceConfigKeyRetriever::SinkDataTypeCode( TMediaId /*aMediaId*/ )
+    {
+    return TFourCC( 0 );
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::EmptyBufferL
+// -----------------------------------------------------------------------------
+//    
+void CMccVideoSourceConfigKeyRetriever::EmptyBufferL( 
+    CMMFBuffer* /*aBuffer*/, MDataSource* /*aSupplier*/, TMediaId /*aMediaId*/ )
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::BufferFilledL
+// -----------------------------------------------------------------------------
+//    
+void CMccVideoSourceConfigKeyRetriever::BufferFilledL( CMMFBuffer* /*aBuffer*/ )
+    {
+    __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::BufferFilledL" )
+    
+    // First buffer was received from mediarecorder, config info should be now
+    // available.
+    StopWaiting();
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::CanCreateSinkBuffer
+// -----------------------------------------------------------------------------
+//    
+TBool CMccVideoSourceConfigKeyRetriever::CanCreateSinkBuffer()
+    {
+    return EFalse;
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::CreateSinkBufferL
+// -----------------------------------------------------------------------------
+//    
+CMMFBuffer* CMccVideoSourceConfigKeyRetriever::CreateSinkBufferL(
+    TMediaId /*aMediaId*/, TBool& /*aReference*/ )
+    {
+    return NULL;
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::ConstructSinkL
+// -----------------------------------------------------------------------------
+//    
+void CMccVideoSourceConfigKeyRetriever::ConstructSinkL( const TDesC8& /*aInitData*/ )
+    {
+    }
+
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::ConstructL
+// -----------------------------------------------------------------------------
+//
+void CMccVideoSourceConfigKeyRetriever::ConstructL()
+    {
+    __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::ConstructL" )
+    
+    iWait = new ( ELeave ) CActiveSchedulerWait;
+    
+    iGuardTimer = CMccPeriodicRunner::NewL();
+    
+    __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::ConstructL, exit" )
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::ConstructL
+// -----------------------------------------------------------------------------
+//    
+CMccVideoSourceConfigKeyRetriever::CMccVideoSourceConfigKeyRetriever( 
+    MMccCameraHandler& aCameraHandler ) :
+    MDataSink( KNullUid ),
+    iCameraHandler( aCameraHandler ),
+    iGuardTimerTimeout( KMccKeyRetrieveGuardTimeoutMicrosecs )
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::HandleEventL
+// -----------------------------------------------------------------------------
+//
+void CMccVideoSourceConfigKeyRetriever::HandleEventL( TMccEvent& aEvent )
+    {
+    __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::HandleEventL" )
+    
+    if ( aEvent.iEventType == KMccStreamError || aEvent.iErrorCode != KErrNone )
+        {
+        User::Leave( KErrNotReady );
+        }
+    else if ( aEvent.iEventType == KMccStreamPrepared )
+        {
+        __V_SOURCESINK_CONTROLL( "Prepared" )
+        
+        // Start recording, first buffer received from mediarecorder
+	    // should contain config info         
+        iSource->FillBufferL( iBuffer, this, KUidMediaTypeVideo );
+	    iSource->SourcePlayL();
+        }
+    else if ( aEvent.iEventType == KMccStreamStarted )
+        {
+        __V_SOURCESINK_CONTROLL( "Started" )
+        }
+    else
+        {
+        // NOP
+        }
+        
+    __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::HandleEventL, exit" )
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::HandleError
+// -----------------------------------------------------------------------------
+//    
+void CMccVideoSourceConfigKeyRetriever::HandleError()
+    {
+    __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::HandleError" )
+    
+    iFailed = ETrue;
+    StopWaiting();
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::StopWaiting
+// -----------------------------------------------------------------------------
+//
+void CMccVideoSourceConfigKeyRetriever::StopWaiting()
+    {
+    if ( iWait && iWait->IsStarted() )
+        {
+        __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::StopWaiting" )
+        iWait->AsyncStop();
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::StartGuardTimer
+// -----------------------------------------------------------------------------
+//
+void CMccVideoSourceConfigKeyRetriever::StartGuardTimer()
+    {
+    __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::StartGuardTimer" )
+    
+    iGuardTimer->Start( 
+        iGuardTimerTimeout, TCallBack( GuardTimerExpired, this ) );	
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::StopGuardTimer
+// -----------------------------------------------------------------------------
+//
+void CMccVideoSourceConfigKeyRetriever::StopGuardTimer()
+    {
+    __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::StopGuardTimer" )
+    
+    iGuardTimer->Stop();	
+    }
+
+// -----------------------------------------------------------------------------
+// CMccVideoSourceConfigKeyRetriever::GuardTimerExpired
+// -----------------------------------------------------------------------------
+//
+TInt CMccVideoSourceConfigKeyRetriever::GuardTimerExpired( TAny* aObject )
+    {
+    __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::GuardTimerExpired" )
+    
+    CMccVideoSourceConfigKeyRetriever* self = 
+        static_cast<CMccVideoSourceConfigKeyRetriever*>( aObject );
+    if ( self )
+        {
+        self->StopWaiting();
+        }
+    
+    __V_SOURCESINK_CONTROLL( "CMccVideoSourceConfigKeyRetriever::GuardTimerExpired, exit" )
+    
+    return KErrNone;
+    }
+    
+// End of file
+