// Open video source
public bool openInputSource(string identifier, TInputType type, bool isAutoPlay)
{
IVideoSource source;
switch (type)
{
case TInputType.IMAGE:
source = new ImageSource();
break;
case TInputType.VIDEO:
source = new VideoFileSource();
break;
case TInputType.DEVICE:
source = new CaptureDevice();
break;
default:
return(false);
}
source.VideoSource = identifier;
// close previous file
closeInputSource();
// create camera
CCamera camera = new CCamera(source);
// attach camera to camera window
_cameraWindow.postRenderingEvent = postRenderingEvent;
_cameraWindow.camera = camera;
_cameraWindow.camera.preRenderingEvent = preRenderingEvent;
_inputType = type;
if (isAutoPlay)
{
play();
}
else
{
//getFirstFrame();
}
// reset statistics
_statIndex = _statReady = 0;
return(true);
}
// On timer event - count fps
private void _timer_Tick(object sender, EventArgs e)
{
CCamera camera = cameraWindow.camera;
if (camera != null)
{
if (_inputType == TInputType.VIDEO)
{
_fps = camera.fps;
}
else if (_inputType != TInputType.IMAGE)
{
// get number of frames for the last second
_statCount[_statIndex] = camera.framesReceived;
// increment indexes
if (++_statIndex >= _statLength)
{
_statIndex = 0;
}
if (_statReady < _statLength)
{
_statReady++;
}
float fps = 0;
// calculate average value
for (int i = 0; i < _statReady; i++)
{
fps += _statCount[i];
}
fps /= _statReady;
_statCount[_statIndex] = 0;
_fps = fps;
}
}
}