public void StartRecording(string filepath)
{
// Start recording.
// We always record what is displayed on screen, not what is grabbed by the device.
// Restart capturing if needed.
if (!m_FrameGrabber.IsGrabbing)
{
m_FrameGrabber.StartGrabbing();
}
// Open a recording context.
int interval = 40;
InfosVideo iv = new InfosVideo();
// The FileWriter will currently only use the original size due to some problems.
// Most notably, DV video passed into 16:9 (720x405) crashes swscale().
iv.iWidth = m_FrameGrabber.FrameSize.Width;
iv.iHeight = m_FrameGrabber.FrameSize.Height;
if (m_FrameGrabber.FramesInterval > 0)
{
// Hack. For interlaced video, we get the fields interval, which is half the frame interval.
interval = m_FrameGrabber.FramesInterval * 2;
}
SaveResult result = m_VideoFileWriter.OpenSavingContext(filepath, iv, interval, false);
if (result == SaveResult.Success)
{
// The frames will be pushed to the file upon receiving the FrameGrabbed event.
m_bCaptureThumbSet = false;
m_bIsRecording = true;
}
else
{
m_VideoFileWriter.CloseSavingContext(false);
m_bIsRecording = false;
DisplayError(result);
}
}
public SaveResult Initialize(string _filepath, double _interval, Size _FrameSize)
{
// Open the recording context and start the recording thread.
// The thread will then wait for the first frame to drop in.
// FIXME: The FileWriter will currently only use the original size due to some problems.
// Most notably, DV video passed into 16:9 (720x405) crashes swscale().
// TODO: Check if this is due to non even height.
InfosVideo iv = new InfosVideo();
iv.iWidth = _FrameSize.Width;
iv.iHeight = _FrameSize.Height;
SaveResult result = m_VideoFileWriter.OpenSavingContext(_filepath, iv, _interval, false);
if (result == SaveResult.Success)
{
m_bInitialized = true;
m_bCaptureThumbSet = false;
m_WorkerThread.Start();
}
else
{
try
{
m_VideoFileWriter.CloseSavingContext(false);
}
catch (Exception exp)
{
// Saving context couldn't be opened properly. Depending on failure we might also fail at trying to close it again.
log.Error(exp.Message);
log.Error(exp.StackTrace);
}
}
return(result);
}
