USER32-CBase 46 using CVideoPlayerUtility

[Dunderante]

Hi!

I'm building an application that uses CVidePlayerUtility to play video streams from Darwin Streaming Server. I'm also using multiple views. In one view you can watch a video.

When i go to the video view first time everything works and the video starts playing. Then I switch view and then switch back to the video view. I then get USER32-CBase 46.

I know this refers to Stray signal when using Active Objects (CActive). The thing is that i'm not using CActive. So from where is this panic coming from?

If I Remove/Comment MediaEngine from the code below I don't get the error so I'm pretty sure it's somewhere there the problem lies.

dbg is just a debugwriter I wrote to be able to debug easier. When I run my aaplication it says The Connection was ok, but I don't receive any events, that is

void CMediaEngine::EventL(const CConnMonEventBase &aConnMonEvent)
{

is never run the second time.


Please help me.

class CMediaView: public CAknView

CMediaView* CMediaView::NewLC()
    {
    CMediaView* self = new ( ELeave ) CMediaView();
    CleanupStack::PushL( self );
    self->ConstructL();
    return self;
    }

void CMediaView::ConstructL()
    {
    BaseConstructL( R_MEDIA_VIEW ); //r_Media_view
    }

CMediaView::~CMediaView()
    {
    
    if ( iContainer )
    	{
    	dbg("Deleting MEDIA VIEW container from destructor");
    	AppUi()->RemoveFromStack( iContainer );
    	delete iContainer;
    	iContainer = NULL;
    	}
    if (iMediaEngine){

    	dbg("Deleting MEDIA ENGINE from destructor");
        delete iMediaEngine;
        iMediaEngine = NULL;
        }
    }

TUid CMediaView::Id() const
    {
    return TUid::Uid( EMediaViewId );
    }


void CMediaView::DoActivateL( const TVwsViewId& /*aPrevViewId*/,
                                    TUid /*aCustomMessageId*/,
                                    const TDesC8& aCustomMessage )
    {
    
    dbg("Activating MEDIA VIEW");
    if(!iContainer) {
   		dbg("Creating MEDIA VIEW container");
   		iContainer = CMediaContainer::NewL( ClientRect());
    }
    AppUi()->AddToStackL(*this, iContainer);
   
   if(!iMediaEngine) {

		dbg("Creating MEDIA ENGINE");
   		iMediaEngine = CMediaEngine::NewL(iContainer);
   }
iAddr.Copy(aCustomMessage);
	iMediaEngine->InitControllerL(iAddr);
    iContainer->DrawNow();
    }
void CMediaView::DoDeactivate()
    {
    dbg("Deactivating MEDIA VIEW");
    if (iContainer )
        {
        dbg("Deleting MEDIA VIEW container from deactivator");
        AppUi()->RemoveFromStack( iContainer );
        delete iContainer;
        iContainer = NULL;
    }
    
    if (iMediaEngine) {

    	dbg("Deleting MEDIA ENGINE from deactivator");
    	delete iMediaEngine;
    	dbg("deleted MEDIA ENGINE from deactivator");
    	iMediaEngine = NULL;
    }
void CMediaView::HandleCommandL( TInt aCommand )
    {

    switch(aCommand) {
    	iMediaEngine->Stop();
       	case ECTVDone:
       		{
       		
       		AppUi()->ActivateLocalViewL(TUid::Uid(EStatViewId),TUid::Uid(100),iAddr);
       		break;
       	}/*
       	case EAknSoftkeyYes:
           		{
           		TBuf8<200> address;
           		address.Copy(iContainer->GetSDP());
           		AppUi()->ActivateLocalViewL(TUid::Uid(EMediaViewId),TUid::Uid(1),address);
           		break;
           	}*/
       	case EEikCmdExit:
       	
       	case EAknSoftkeyAbort:{

       		//iMediaEngine->Stop();
       		AppUi()->ActivateLocalViewL(TUid::Uid(EWatchViewId));
       		break;
       	}
       	case ECTVMainMenu:{

       		//iMediaEngine->Stop();
       		AppUi()->ActivateLocalViewL(TUid::Uid(EMainMenuViewId));
       		break;
       	}
       	default:

       	   // iMediaEngine->Stop();
       		AppUi()->HandleCommandL( aCommand );
       		break;
       	}
    }

void CMediaView::HandleSizeChange( TInt aType )
    {
    if( iContainer )
        {
        iContainer->HandleResourceChange( aType );
        
        if ( aType==KEikDynamicLayoutVariantSwitch )
            {        
            TRect rect;
            AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EMainPane, rect);
            iContainer->SetRect(rect);
            }
        }         
    }

class CMediaEngine : public MVideoPlayerUtilityObserver, MConnectionMonitorObserver, CBase

CMediaEngine::CMediaEngine():iPlayer(NULL) //ANte
	{
	// No implementation required
	}
void CMediaEngine::ConstructL(CMediaContainer* aView)
	{
	iView = aView;
	}
CMediaEngine* CMediaEngine::NewL(CMediaContainer* aView)
	{
	CMediaEngine* self = new (ELeave) CMediaEngine();
	CleanupStack::PushL(self);
	self->ConstructL(aView);
	CleanupStack::Pop(); // self;
	return self;
	}



void CMediaEngine::InitControllerL(TBuf8<200> addr)
	{

		dbg("\n\n ************* Entering InitController v0.25 ***************");

		iPlayer = NULL;

		ReadIPFromFile(addr);
		dbg("INNAN connectL");
		TInt err = iConnMon.ConnectL();
		dbg("EFTRE connectL");
		iConnMon.NotifyEventL( *this );

		RHostResolver iResolver;
		RSocketServ sock;
		dbg("INNAN connect");
		User::LeaveIfError(sock.Connect());
		dbg("EFTER connect");
		err = iResolver.Open(sock,KAfInet, KProtocolInetUdp);

		if (err != 0) {
			dbg("Error in connection: %d",err);
		}
		else{
			dbg("Connection ok");
			TNameEntry nameEntry;
			status = -1;
			iResolver.GetByName(_L("http://www.google.se"),nameEntry,status);
		}


	}



void CMediaEngine::EventL(const CConnMonEventBase &aConnMonEvent)
	{
		/*_LIT(KUrlVideos, "rtsp://rtsp.youtube.com/youtube/videos/bxabHg--WBE/video.3gp");
		const char * str = "rtsp://rtsp.youtube.com/youtube/videos/bxabHg--WBE/video.3gp";
		//_LIT(KUrlVideos, str);

		_LIT(param,"");
		param.Format("%s",_L("hej"));*/
dbg("inne i event");
		TInt event = aConnMonEvent.EventType();
		TRequestStatus istatus;
		dbg("Eventtype: %i",event);
	 	if (event == EConnMonCreateConnection){
	 		dbg("New connection");
	 		TUint connId = aConnMonEvent.ConnectionId();
	 		iConnMon.GetUintAttribute(connId, 0, KIAPId, iapId, istatus);
	 		User::WaitForRequest( istatus );
	 		iPlayer = NULL; //ANte
	 		iPlayer = CVideoPlayerUtility::NewL(*this, EMdaPriorityNormal,
	 				 		 					EMdaPriorityPreferenceNone,
	 				 		 					iView->ClientWsSession(),
	 				 		 					iView->ScreenDevice(),
	 				 		 					iView->ClientWindow(),
	 				 		 					iView->VideoRect(),
	 				 		 					iView->VideoRect() );
	 		//iPlayer->OpenUrlL(KUrlVideos, KUseDefaultIap, KNullDesC8, KNullUid);
	 		//TInt leaveCode;
	 		//TRAP(leaveCode, iPlayer->OpenUrlL(KUrlVideos));
	 		//iPlayer->OpenUrlL(KUrlVideos);

	 		//iPlayer->OpenUrlL(KUrlVideos, iapId, KNullDesC8, KNullUid);
	 		iPlayer->OpenUrlL(url, iapId, KNullDesC8, KNullUid);
	 		User::WaitForRequest(status);
	 	}

	}


void CMediaEngine::ReadIPFromFile(TBuf8<200> addr)
	{
			
			TBuf8<200> atext;
			_LIT(text,"rtsp://217.174.93.71:554/");
			atext.Copy(text);
			atext.Append(addr);
			atext.Append(_L(".sdp"));
			url.Copy(atext);
			//url.Copy(_L("rtsp://217.174.93.64:554/test1.sdp"));
	//url.Copy(_L("rtsp/test1.sdp"));
		}



void CMediaEngine::MvpuoOpenComplete(TInt aError)
	{
		if(aError == KErrNone) {
			dbg("Prepairing video");
			iPlayer->Prepare();
		} else {
			dbg("Open Complete: %d", aError);
		}
	}
void CMediaEngine::MvpuoPrepareComplete(TInt aError)
	{
		if (aError == KErrNone) {
			dbg("Playing video");
			iPlayer->Play();
		} else {
			dbg("Prepare Complete: %d", aError);
		}
	}
void CMediaEngine::MvpuoFrameReady(CFbsBitmap& aFrame, TInt aError)
	{
		//do nothing
	}
void CMediaEngine::MvpuoPlayComplete(TInt aError)
	{

		iPlayer->Stop();
		iPlayer->Close();
		//do nothing
	}
void CMediaEngine::MvpuoEvent(const TMMFEvent& aEvent)
	{
		//do nothing
	}
void CMediaEngine::PauseL()
	{
		iPlayer->PauseL();
	}
TTimeIntervalMicroSeconds CMediaEngine::PositionL()
	{
		return iPlayer->PositionL();
	}
TTimeIntervalMicroSeconds CMediaEngine::DurationL()
	{
		return iPlayer->DurationL();
	}
void CMediaEngine::Stop()
	{
		iPlayer->Stop();
	}
CMediaEngine::~CMediaEngine()
	{
	dbg("first in destructor");
	if(iPlayer != NULL)
		{
		delete iPlayer;
		iPlayer = NULL;
		dbg("deleted iPLayer");
		}
	}

class CMediaContainer : public CCoeControl

CMediaContainer* CMediaContainer::NewL(const TRect& aRect)
	{
	CMediaContainer* self = CMediaContainer::NewLC(aRect);
	CleanupStack::Pop(self); // self;
	return self;
	}

CMediaContainer* CMediaContainer::NewLC(const TRect& aRect)
	{
	CMediaContainer* self = new (ELeave) CMediaContainer();
	CleanupStack::PushL(self);
	self->ConstructL(aRect);
	return self;
	}

void CMediaContainer::ConstructL(const TRect& aRect)
	{
	CreateWindowL();
	iVideoRect = Rect();
	iVideoRect.iTl.iX += 0; //aRect.iTl.iX; //point.iX;
	iVideoRect.iTl.iY += 0; //aRect.iTl.iX;; //point.iY;
	iVideoRect.iBr.iX += 240; //aRect.iTl.iX;; //point.iX;
	iVideoRect.iBr.iY += 180; //aRect.iTl.iX;; //point.iY;
	SetRect(iVideoRect);
	ActivateL();
	}

void CMediaContainer::Resize()
	{
	iVideoRect.iTl.iX = 0; //aRect.iTl.iX; //point.iX;
	iVideoRect.iTl.iY = 0; //aRect.iTl.iX;; //point.iY;
	iVideoRect.iBr.iX = 240; //aRect.iTl.iX;; //point.iX;
	iVideoRect.iBr.iY = 180; //aRect.iTl.iX;; //point.iY;
	SetRect(iVideoRect);
	//DrawNow();
	}


void CMediaContainer::Draw(const TRect&) const
	{
	CWindowGc& gc = SystemGc();
	gc.SetBrushColor(KRgbGreen);
	gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
	//TRect rect = Rect();
	//gc.Clear(rect);
	gc.DrawRect(iVideoRect);
	dbg("draw green screen");
	}

CMediaContainer::CMediaContainer()
	{
	}

CMediaContainer::~CMediaContainer()
	{
	}

[symbianyucca]

a bit too much code there really. Anyway you should make sure you do cancel & close all functions that are running.

Also you do have quite many AO's there really, and at least the GetByName is not handled correctly.. So please check your code again.

[Dunderante]

Problem solved.

I put

iResolver.Cancel();
iResolver.Close();
iSock.Close();
iConnMon.CancelNotifications();
iConnMon.Close();

in the destructor of mediaengine. Thanks for the reply.
What do you mean by AOs anyway?

[Sorcery-ltd]

AOs = Active Objects