how to get fps in camera example?

[freesui1984]

Hi,

i want to get the frame per second in camera example. In this example, i got every CFbsBitmap& frame in functin ViewFinderFrameReady and then transferred it to container to draw. so how can i get the frame per second?

For get fps, i set two variables in cameracaptureengine.h

int                       TickCounter;
        
        TTime                     iStartTime;

and in ViewFinderFrameReady

TickCounter++;
         
         
        TTime iNow;
        
  
       // FindMarkerCorners(iFrame);
        
       // AR(aFrame);
        
        iNow.HomeTime();
        
        TTimeIntervalMicroSeconds microSeconds = iNow.MicroSecondsFrom( iStartTime );

        TUint miliSeconds = microSeconds.Int64() / 1000;
        
        if(miliSeconds==1000)//demostrate one second
        	{
        
                TBuf<100> buf1;
                buf1.Num(TickCounter);
                
                CEikonEnv::InfoWinL(_L("The time of every frame"),buf1);
               
                iStartTime=iNow;
            }

but there is no any infowin, so why?

i have got it. These are my codes in viewfinderframeready:

TickCounter++;
         
         if(TickCounter==100)
        	 {
        	 TTime iNow;
        	 iNow.HomeTime();
        	 
        	 TTimeIntervalMicroSeconds microSeconds = iNow.MicroSecondsFrom( iStartTime );

        	 TUint miliSeconds = microSeconds.Int64() / 1000;
        	         
        	 TBuf<100> buf1;
        	 buf1.Num(miliSeconds);
        	         
        	 CEikonEnv::InfoWinL(_L("the time of 100 frames"),buf1);
        	        
        	 
        	 
        	 }

Thank you.

Mia

[symbianyucca]

maybe you could try notes, like Global notes for example: http://wiki.forum.nokia.com/index.php/Global_notes

[arijr]

How about drawing directly on the Gc, I dunno if is the neatest & fastest way to do it but I would do it so. :-)

In the header file:

TUint32 iTimeMs;
TInt iFps;

Init iTimeMs e.g. in the beginning of DoViewFinderL().

iTimeMs = 0;

Calc Fps in the beginning of ImageReady()

iFps = (TInt)(1000/(User:NTickCount() - iTimeMs));
iTimeMs = User:NTickCount();

At the end of DrawL blit on top of captured image:

_LIT(KFps,"FPS: %d");
TBuf<10> fpsBuf;
TPoint pos(set desired screen coordinates);
fpsBuf.Format( KFps, iFps);
fpsBitGc->UseFont(CEikonEnv::Static()->DenseFont());
fbsBitGc->SetPenColor( KRgbWhite);
fbsBitGc->DrawText( fpsBuf, pos);

HTH,

-Ari