/// <summary>
/// create the user selected capture device.
/// </summary>
private void CreateCaptureDevice(UCOMIMoniker mon)
{
object capObj = null;
String errMsg = "";
try
{
Guid gbf = typeof(IBaseFilter).GUID;
mon.BindToObject(null, null, ref gbf, out capObj);
capFilter = (IBaseFilter)capObj; capObj = null;
}
catch (Exception ee)
{
errMsg = ee.Message;
}
finally
{
if (capObj != null)
{
Marshal.ReleaseComObject(capObj);
}
capObj = null;
}
if (errMsg.Length > 0)
{
throw new GoblinException("Could not create capture device\r\n" + errMsg);
}
}
/// <summary> create the user selected capture device. </summary>
bool CreateCaptureDevice(UCOMIMoniker mon)
{
object capObj = null;
try
{
Guid gbf = typeof(IBaseFilter).GUID;
mon.BindToObject(null, null, ref gbf, out capObj);
capFilter = (IBaseFilter)capObj; capObj = null;
return(true);
}
catch (Exception ee)
{
MessageBox.Show(this, "Could not create capture device\r\n" + ee.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
return(false);
}
finally
{
if (capObj != null)
{
Marshal.ReleaseComObject(capObj);
}
capObj = null;
}
}
private bool CreateCaptureDevice(UCOMIMoniker mon)
{
object capObj = null;
try {
Guid gbf = typeof(IBaseFilter).GUID;
mon.BindToObject(null, null, ref gbf, out capObj);
capFilter = (IBaseFilter)capObj; capObj = null;
return(true);
}
catch (Exception ee) {
return(false);
}
finally {
if (capObj != null)
{
Marshal.ReleaseComObject(capObj);
}
capObj = null;
}
}
void CreateCaptureDevice(UCOMIMoniker mon)
{
object capObj = null;
try
{
Guid gbf = typeof(IBaseFilter).GUID;
mon.BindToObject(null, null, ref gbf, out capObj);
capFilter = (IBaseFilter)capObj;
capObj = null;
}
catch (Exception ee)
{
throw new Exception("Could not create capture device\r\n" + ee.Message);
}
finally
{
if (capObj != null)
{
Marshal.ReleaseComObject(capObj);
}
capObj = null;
}
}
// Thread entry point
public void WorkerThread()
{
// grabber
Grabber grabber = new Grabber(this);
// objects
object graphObj = null;
object sourceObj = null;
object grabberObj = null;
// interfaces
IGraphBuilder graph = null;
IBaseFilter sourceBase = null;
IBaseFilter grabberBase = null;
ISampleGrabber sg = null;
IMediaControl mc = null;
try
{
// Get type for filter graph
Type srvType = Type.GetTypeFromCLSID(Clsid.FilterGraph);
if (srvType == null)
{
throw new ApplicationException("Failed creating filter graph");
}
// create filter graph
graphObj = Activator.CreateInstance(srvType);
graph = (IGraphBuilder)graphObj;
// ----
UCOMIBindCtx bindCtx = null;
UCOMIMoniker moniker = null;
int n = 0;
// create bind context
if (Win32.CreateBindCtx(0, out bindCtx) == 0)
{
// convert moniker`s string to a moniker
if (Win32.MkParseDisplayName(bindCtx, source, ref n, out moniker) == 0)
{
// get device base filter
Guid filterId = typeof(IBaseFilter).GUID;
moniker.BindToObject(null, null, ref filterId, out sourceObj);
Marshal.ReleaseComObject(moniker);
moniker = null;
}
Marshal.ReleaseComObject(bindCtx);
bindCtx = null;
}
// ----
if (sourceObj == null)
{
throw new ApplicationException("Failed creating device object for moniker");
}
sourceBase = (IBaseFilter)sourceObj;
// Get type for sample grabber
srvType = Type.GetTypeFromCLSID(Clsid.SampleGrabber);
if (srvType == null)
{
throw new ApplicationException("Failed creating sample grabber");
}
// create sample grabber
grabberObj = Activator.CreateInstance(srvType);
sg = (ISampleGrabber)grabberObj;
grabberBase = (IBaseFilter)grabberObj;
// add source filter to graph
graph.AddFilter(sourceBase, "source");
graph.AddFilter(grabberBase, "grabber");
// set media type
AMMediaType mt = new AMMediaType();
mt.majorType = MediaType.Video;
mt.subType = MediaSubType.RGB24;
sg.SetMediaType(mt);
// connect pins
if (graph.Connect(DSTools.GetOutPin(sourceBase, 0), DSTools.GetInPin(grabberBase, 0)) < 0)
{
throw new ApplicationException("Failed connecting filters");
}
// get media type
if (sg.GetConnectedMediaType(mt) == 0)
{
VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure(mt.formatPtr, typeof(VideoInfoHeader));
grabber.Width = vih.BmiHeader.Width;
grabber.Height = vih.BmiHeader.Height;
mt.Dispose();
}
// render
graph.Render(DSTools.GetOutPin(grabberBase, 0));
//
sg.SetBufferSamples(false);
sg.SetOneShot(false);
sg.SetCallback(grabber, 1);
// window
IVideoWindow win = (IVideoWindow)graphObj;
win.put_AutoShow(false);
win = null;
// get media control
mc = (IMediaControl)graphObj;
// run
mc.Run();
while (!stopEvent.WaitOne(0, true))
{
Thread.Sleep(100);
}
mc.StopWhenReady();
}
// catch any exceptions
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("----: " + e.Message);
}
// finalization block
finally
{
// release all objects
mc = null;
graph = null;
sourceBase = null;
grabberBase = null;
sg = null;
if (graphObj != null)
{
Marshal.ReleaseComObject(graphObj);
graphObj = null;
}
if (sourceObj != null)
{
Marshal.ReleaseComObject(sourceObj);
sourceObj = null;
}
if (grabberObj != null)
{
Marshal.ReleaseComObject(grabberObj);
grabberObj = null;
}
}
}
/// <summary> create the user selected capture device. </summary>
bool CreateCaptureDevice( UCOMIMoniker mon )
{
object capObj = null;
try {
Guid gbf = typeof( IBaseFilter ).GUID;
mon.BindToObject( null, null, ref gbf, out capObj );
capFilter = (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> create the user selected capture device. </summary>
private bool CreateCaptureDevice( UCOMIMoniker mon )
{
object capObj = null;
try
{
Guid gbf = typeof( IBaseFilter ).GUID;
mon.BindToObject( null, null, ref gbf, out capObj );
capFilter = (IBaseFilter) capObj; capObj = null;
return true;
}
catch( Exception ee )
{
if( capObj != null )
Marshal.ReleaseComObject( capObj ); capObj = null;
throw ee;
}
}
public void WorkerThread()
{
Grabber pCallback = new Grabber(this);
object o = null;
object ppvResult = null;
object obj4 = null;
IGraphBuilder builder = null;
IBaseFilter pFilter = null;
IBaseFilter filter2 = null;
ISampleGrabber grabber2 = null;
IMediaControl control = null;
try
{
Type typeFromCLSID = Type.GetTypeFromCLSID(Clsid.FilterGraph);
if (typeFromCLSID == null)
{
throw new ApplicationException("Failed creating filter graph");
}
o = Activator.CreateInstance(typeFromCLSID);
builder = (IGraphBuilder)o;
UCOMIBindCtx ppbc = null;
UCOMIMoniker ppmk = null;
int pchEaten = 0;
if (Win32.CreateBindCtx(0, out ppbc) == 0)
{
if (Win32.MkParseDisplayName(ppbc, this.source, ref pchEaten, out ppmk) == 0)
{
Guid gUID = typeof(IBaseFilter).GUID;
ppmk.BindToObject(null, null, ref gUID, out ppvResult);
Marshal.ReleaseComObject(ppmk);
ppmk = null;
}
Marshal.ReleaseComObject(ppbc);
ppbc = null;
}
if (ppvResult == null)
{
throw new ApplicationException("Failed creating device object for moniker");
}
pFilter = (IBaseFilter)ppvResult;
typeFromCLSID = Type.GetTypeFromCLSID(Clsid.SampleGrabber);
if (typeFromCLSID == null)
{
throw new ApplicationException("Failed creating sample grabber");
}
obj4 = Activator.CreateInstance(typeFromCLSID);
grabber2 = (ISampleGrabber)obj4;
filter2 = (IBaseFilter)obj4;
builder.AddFilter(pFilter, "source");
builder.AddFilter(filter2, "grabber");
AMMediaType pmt = new AMMediaType {
majorType = MediaType.Video,
subType = MediaSubType.RGB24
};
grabber2.SetMediaType(pmt);
if (builder.Connect(DSTools.GetOutPin(pFilter, 0), DSTools.GetInPin(filter2, 0)) < 0)
{
throw new ApplicationException("Failed connecting filters");
}
if (grabber2.GetConnectedMediaType(pmt) == 0)
{
VideoInfoHeader header = (VideoInfoHeader)Marshal.PtrToStructure(pmt.formatPtr, typeof(VideoInfoHeader));
pCallback.Width = header.BmiHeader.Width;
pCallback.Height = header.BmiHeader.Height;
pmt.Dispose();
}
builder.Render(DSTools.GetOutPin(filter2, 0));
grabber2.SetBufferSamples(false);
grabber2.SetOneShot(false);
grabber2.SetCallback(pCallback, 1);
((IVideoWindow)o).put_AutoShow(false);
control = (IMediaControl)o;
control.Run();
while (!this.stopEvent.WaitOne(0, true))
{
Thread.Sleep(100);
}
control.StopWhenReady();
}
catch (Exception)
{
}
finally
{
control = null;
builder = null;
pFilter = null;
filter2 = null;
grabber2 = null;
if (o != null)
{
Marshal.ReleaseComObject(o);
o = null;
}
if (ppvResult != null)
{
Marshal.ReleaseComObject(ppvResult);
ppvResult = null;
}
if (obj4 != null)
{
Marshal.ReleaseComObject(obj4);
obj4 = null;
}
}
}
/// <summary> create the user selected capture device. </summary>
bool CreateCaptureDevice(UCOMIMoniker mon)
{
object capObj = null;
try
{
Guid gbf = typeof(IBaseFilter).GUID;
mon.BindToObject(null, null, ref gbf, out capObj);
capFilter = (IBaseFilter)capObj; capObj = null;
return true;
}
catch
{
return false;
}
finally
{
if (capObj != null)
Marshal.ReleaseComObject(capObj); capObj = null;
}
}