// GrabFrameCompleteProc (QuicktimeLiveImageStream)
ComponentResult QuicktimeLiveImageStream::grabFrameCompleteProc(SGChannel sgChan, short nBufferNum, Boolean *pbDone, long lRefCon)
{
ComponentResult err = noErr;
// call the default grab-complete function
err = SGGrabFrameComplete(sgChan, // channel reference
nBufferNum, // buffer identifier, provided for you
pbDone); // pointer to a boolean, has the frame been completely captured? provided for you
static unsigned int fps_counter = 0;
static osg::Timer_t start, finish;
if (fps_counter == 0)
start = osg::Timer::instance()->tick();
// if the frame is done, make sure the Image is replaced
if (*pbDone && (sgChan == m_gVideoChannel))
{
dirty();
++fps_counter;
if (fps_counter == 100)
{
finish = osg::Timer::instance()->tick();
double dur = osg::Timer::instance()->delta_s(start, finish);
double fps = 100.0 / dur;
OSG_NOTICE << "Executed 100 frames in " << dur << " seconds : ~" << fps << " fps" << std::endl;
fps_counter = 0;
}
}
return err;
}
static ComponentResult frameIsGrabbedProc(SGChannel sgChan, short nBufferNum, Boolean *pbDone, long lRefCon){
ComponentResult err = SGGrabFrameComplete( sgChan, nBufferNum, pbDone );
bool * havePixChanged = (bool *)lRefCon;
*havePixChanged = true;
return err;
}
