Camera ViewFinder problem

[eugine_s]

I have a strange problem with camera ViewFinder.

I use MCameraObserver2 interface. This interface has a method - ViewFinderReady(MCameraBuffer& aCameraBuffer, TInt aError), which has to be called periodicaly.
But in my program it called only once.

There is my algorithm with camera:

1) iCamera = CCamera::New2L(*this, 0, 0);
2) iCamera->Reserve();
3) in HandleEvent(const TECAMEvent& aEvent) I call iCamera->PowerOn();
4) in HandleEvent(const TECAMEvent& aEvent) I call StartViewFinder();

A code of the HandleEvent and StartViewFinder:

void HandleEvent(const TECAMEvent& aEvent)
    {
    if (aEvent.iEventType == KUidECamEventReserveComplete)
        {
        if (aEvent.iErrorCode == KErrNone)
            {
            iCamera->PowerOn();
            }
        else
            {
            }
        }
    else
        if (aEvent.iEventType == KUidECamEventPowerOnComplete)
            {
            if (aEvent.iErrorCode == KErrNone)
                {
                StartViewFinder();
                }
            else
                {
                }
            }
}


void StartViewFinder()
    {
    if (iCamera->ViewFinderActive())
        {
        return;
        }
    TRAPD(err, iCamera->StartViewFinderBitmapsL(iSize));
     } 

StartViewFinder TRAP return KErrNone (err == KErrNone)

After that MCameraObserver2's method ViewFinderReady() called and I draw the image on a screen.
BUT: after that ViewFinderReady() does NOT called and my screen aren't updating

But camera are working at the moment, so I can capture image (before capturing image I call StopViewFinder). After capturing image I call StartViewFinder and again ViewFinderReady() called only once.

What a problem could be?

ViewFinderReady implamentation

void ViewFinderReady(MCameraBuffer& aCameraBuffer, TInt aError)
    {
    iNotifier.DrawImage(aCameraBuffer.BitmapL(0));
    } 

I've been testing this on a Nokia N78 (FP2)

[wizard_hu_]

Unfortunately I have no FP2 device, but my guess would be this one

virtual void Release()=0;
Description
Releases the buffer. Once the client has processed the picture data it should use this method to signal to CCamera that the buffer can be re-used

You should try invoking aCameraBuffer.Release() after using the bitmap.

[eugine_s]

wizard_hu_

Thank you for a such quick answer.
And other thanks for the solution of the problem.
It works good now