/// <summary>
/// Luoz: 创建用户选择的设备设备
/// </summary>
bool CreateCaptureDevice(IMoniker mon)
{
object capObj = null;
try
{
Guid gbf = typeof(prp.IBaseFilter).GUID;
mon.BindToObject(null, null, ref gbf, out capObj);
capFilter = (prp.IBaseFilter)capObj; capObj = null;
return(true);
}
catch (Exception ee)
{
MessageBox.Show(this, "Could not create capture device\r\n" + ee.Message, "DirectShow.NET", MessageBoxButtons.OK, MessageBoxIcon.Stop);
return(false);
}
finally
{
if (capObj != null)
{
Marshal.ReleaseComObject(capObj);
}
capObj = null;
}
}
/// <summary>
/// Luoz: build the capture graph
/// </summary>
/// <returns></returns>
bool SetupGraph()
{
int hr;
prp.IBaseFilter mux = null;
prp.IFileSinkFilter sink = null;
try
{
hr = capGraph.SetFiltergraph(graphBuilder);
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
hr = graphBuilder.AddFilter(capFilter, "Ds.NET Video Capture Device");
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
prp.DsUtils.ShowCapPinDialog(capGraph, capFilter, this.Handle);
Guid sub = prp.MediaSubType.Avi;
hr = capGraph.SetOutputFileName(ref sub, fileName, out mux, out sink);
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
Guid cat = prp.PinCategory.Capture;
Guid med = prp.MediaType.Video;
hr = capGraph.RenderStream(ref cat, ref med, capFilter, null, mux); // stream to file
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
cat = prp.PinCategory.Preview;
med = prp.MediaType.Video;
hr = capGraph.RenderStream(ref cat, ref med, capFilter, null, null); // preview window
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
return(true);
}
catch (Exception ee)
{
MessageBox.Show(this, "Could not setup graph\r\n" + ee.Message, "DirectShow.NET", MessageBoxButtons.OK, MessageBoxIcon.Stop);
return(false);
}
finally
{
if (mux != null)
{
Marshal.ReleaseComObject(mux);
}
mux = null;
if (sink != null)
{
Marshal.ReleaseComObject(sink);
}
sink = null;
}
}
/// <summary>
/// Luoz: �����û�ѡ����豸�豸
/// </summary>
bool CreateCaptureDevice(IMoniker mon)
{
object capObj = null;
try
{
Guid gbf = typeof(prp.IBaseFilter).GUID;
mon.BindToObject(null, null, ref gbf, out capObj);
capFilter = (prp.IBaseFilter)capObj; capObj = null;
return true;
}
catch (Exception ee)
{
MessageBox.Show(this, "Could not create capture device\r\n" + ee.Message, "DirectShow.NET", MessageBoxButtons.OK, MessageBoxIcon.Stop);
return false;
}
finally
{
if (capObj != null)
Marshal.ReleaseComObject(capObj); capObj = null;
}
}