/// <summary>
/// Start receiving jpeg frames via the FrameAvailable event.
/// </summary>
/// <param name="dispatcher">The UI dispatcher</param>
/// <param name="sizeHint">The size you plan to display, this is just a hint</param>
/// <param name="fps">The fps setting, defaults to maximum FPS</param>
public void StartJpegStream(CoreDispatcher dispatcher, int sizeHint = 640, CameraFps fps = CameraFps.Max)
{
int resolution = (sizeHint <= 320) ? 8 : 32;
if (CameraUrl == null)
{
return;
}
try
{
mjpeg = new MjpegDecoder(dispatcher);
mjpeg.FrameReady += OnFrameReady;
mjpeg.Error += OnError;
string requestStr = String.Format("{0}videostream.cgi?resolution={1}&rate={2}", CameraUrl, resolution, (byte)fps);
int msPerFrames = GetMillisecondsPerFrame(fps);
mjpeg.GetVideoStream(new Uri(requestStr), msPerFrames, GetCredentials());
}
catch (Exception e)
{
OnError(this, new ErrorEventArgs()
{
Message = e.Message
});
Log.WriteLine("{0}: couldn't talk to the camera. are the arguments correct?\n exception details: {1}", this.ToString(), e.ToString());
throw;
}
}
private int GetMillisecondsPerFrame(CameraFps fps)
{
double milliseconds = 50;
foreach (FpsInfo i in FpsItems)
{
if (i.Value >= fps)
{
milliseconds = i.MillisecondsPerFrame;
break;
}
}
return((int)milliseconds);
}
internal static extern CameraError GetPreviewFps(IntPtr handle, out CameraFps fps);
public FpsInfo(string caption, CameraFps value, double msPerFrame)
{
Caption = caption;
Value = value;
MillisecondsPerFrame = msPerFrame;
}
