///////////////////////////////////////////////////////////////////////////////
// Small helping Methods //
///////////////////////////////////////////////////////////////////////////////
#region HELPER
/// <summary>
/// loop through the list of the differnet sizes and FPS
/// </summary>
/// <param name="lst"></param>
/// <param name="instance"></param>
/// <returns></returns>
private bool inSizeFpsList(List <CamSizeFPS> lst, CamSizeFPS instance)
{
foreach (CamSizeFPS c in lst)
{
if (c.CompareTo(instance) == 0)
{
return(true);
}
}
return(false);
}
public int CompareTo(object obj)
{
if (obj is CamSizeFPS)
{
CamSizeFPS csf = (CamSizeFPS)obj;
return((csf.Height + csf.Width + csf.FPS).CompareTo(this.Height + this.Width + this.FPS));
}
else
{
throw new ArgumentException("Object is not a CamSizeFPS");
}
}
private bool ParametersOK(CamSizeFPS instance)
{
if (instance.FPS < minFps || instance.FPS > maxFps)
{
return(false);
}
if (instance.Width < minWidth || instance.Width > maxWidth)
{
return(false);
}
if (instance.Height < minHeight || instance.Height > maxHeight)
{
return(false);
}
return(true);
}
/// <summary>
/// Returns the <see cref="CameraInfo"/> for the given <see cref="DsDevice"/>.
/// </summary>
/// <param name="dev">A <see cref="DsDevice"/> to parse name and capabilities for.</param>
/// <returns>The <see cref="CameraInfo"/> for the given device.</returns>
private CameraInfo Caps(DsDevice dev)
{
CameraInfo camerainfo = new CameraInfo();
try
{
int hr;
// Get the graphbuilder object
m_graphBuilder = (IFilterGraph2) new FilterGraph();
// Get the ICaptureGraphBuilder2
capGraph = (ICaptureGraphBuilder2) new CaptureGraphBuilder2();
// Add the video device
hr = m_graphBuilder.AddSourceFilterForMoniker(dev.Mon, null, "Video input", out capFilter);
//DsError.ThrowExceptionForHR(hr);
if (hr != 0)
{
return(null);
}
hr = capGraph.SetFiltergraph(m_graphBuilder);
DsError.ThrowExceptionForHR(hr);
hr = m_graphBuilder.AddFilter(capFilter, "Ds.NET Video Capture Device");
DsError.ThrowExceptionForHR(hr);
object o = null;
DsGuid cat = PinCategory.Capture;
DsGuid type = MediaType.Interleaved;
DsGuid iid = typeof(IAMStreamConfig).GUID;
// Check if Video capture filter is in use
hr = capGraph.RenderStream(cat, MediaType.Video, capFilter, null, null);
if (hr != 0)
{
return(null);
}
//hr = capGraph.FindInterface(PinCategory.Capture, MediaType.Interleaved, capFilter, typeof(IAMStreamConfig).GUID, out o);
//if (hr != 0)
//{
hr = capGraph.FindInterface(PinCategory.Capture, MediaType.Video, capFilter, typeof(IAMStreamConfig).GUID, out o);
DsError.ThrowExceptionForHR(hr);
//}
IAMStreamConfig videoStreamConfig = o as IAMStreamConfig;
int iCount = 0;
int iSize = 0;
try
{
videoStreamConfig.GetNumberOfCapabilities(out iCount, out iSize);
}
catch (Exception ex)
{
ErrorLogger.ProcessException(ex, false);
return(null);
}
pscc = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(VideoStreamConfigCaps)));
camerainfo.Name = dev.Name;
camerainfo.DirectshowDevice = dev;
for (int i = 0; i < iCount; i++)
{
AMMediaType curMedType;
VideoStreamConfigCaps scc;
try
{
hr = videoStreamConfig.GetStreamCaps(i, out curMedType, pscc);
Marshal.ThrowExceptionForHR(hr);
scc = (VideoStreamConfigCaps)Marshal.PtrToStructure(pscc, typeof(VideoStreamConfigCaps));
CamSizeFPS CSF = new CamSizeFPS();
CSF.FPS = (int)(10000000 / scc.MinFrameInterval);
CSF.Height = scc.InputSize.Height;
CSF.Width = scc.InputSize.Width;
if (!inSizeFpsList(camerainfo.SupportedSizesAndFPS, CSF))
{
if (ParametersOK(CSF))
{
camerainfo.SupportedSizesAndFPS.Add(CSF);
}
}
}
catch (Exception ex)
{
ErrorLogger.ProcessException(ex, false);
}
}
}
finally
{
}
return(camerainfo);
}