protected void CalcRunningObjName(UCOMIRunningObjectTable rot,
UCOMIBindCtx bc,
UCOMIMoniker moniker,
String monikerName)
{
_moniker = moniker;
_monikerName = monikerName;
// FIXME - Does not work because IsRunning is defined
// incorrectly in the IRunningObjectTable mapping
//IsRunning = rot.IsRunning(Moniker);
// Get the object from the table
_isRunningObjectTable = true;
// Persist Guid is probably not used for anything, but
// let's get it anyway
Guid persistGuid = new Guid();
_moniker.GetClassID(out persistGuid);
_persistGuid = persistGuid;
// GUID is the *real* CLSID for the object
String rotProgId = null;
if (_monikerName.StartsWith("!{"))
{
int guidStart = _monikerName.IndexOf('{');
int guidEnd = _monikerName.IndexOf('}');
if (guidStart != -1 && guidEnd != -1)
{
_CLSID =
_monikerName.Substring(guidStart, guidEnd);
_classIdKey = Windows.KeyCLSID.OpenSubKey(_CLSID);
if (_classIdKey != null)
{
String progId = (String)
_classIdKey.OpenSubKey("ProgID").
GetValue(null);
_classNameKey =
Windows.KeyClassRoot.OpenSubKey(progId);
rotProgId = progId
+ _monikerName.Substring(guidEnd + 1);
}
}
// Use the translated progId if available
if (rotProgId != null)
{
_monikerDisplayName = rotProgId;
}
else
{
_monikerDisplayName = _monikerName;
}
}
else
{
// The moniker is something else, just use that
_monikerDisplayName = _monikerName;
}
}
public static IBaseFilter AddFilterByDevicePath(IGraphBuilder graphBuilder, string devicePath, string name)
{
int hr = 0;
IBaseFilter filter = null;
#if USING_NET11
UCOMIBindCtx bindCtx = null;
UCOMIMoniker moniker = null;
#else
IBindCtx bindCtx = null;
IMoniker moniker = null;
#endif
int eaten;
if (graphBuilder == null)
{
throw new ArgumentNullException("graphBuilder");
}
try
{
hr = NativeMethods.CreateBindCtx(0, out bindCtx);
Marshal.ThrowExceptionForHR(hr);
hr = NativeMethods.MkParseDisplayName(bindCtx, devicePath, out eaten, out moniker);
Marshal.ThrowExceptionForHR(hr);
hr = (graphBuilder as IFilterGraph2).AddSourceFilterForMoniker(moniker, bindCtx, name, out filter);
DsError.ThrowExceptionForHR(hr);
}
catch
{
// An error occur. Just returning null...
}
finally
{
if (bindCtx != null)
{
Marshal.ReleaseComObject(bindCtx);
}
if (moniker != null)
{
Marshal.ReleaseComObject(moniker);
}
}
return(filter);
}
// Get filter name represented by the moniker string
private string GetName(string monikerString)
{
UCOMIBindCtx bindCtx = null;
UCOMIMoniker moniker = null;
String name = "";
int n = 0;
// create bind context
if (Win32.CreateBindCtx(0, out bindCtx) == 0)
{
// convert moniker`s string to a moniker
if (Win32.MkParseDisplayName(bindCtx, monikerString, ref n, out moniker) == 0)
{
// get device name
name = GetName(moniker);
Marshal.ReleaseComObject(moniker);
moniker = null;
}
Marshal.ReleaseComObject(bindCtx);
bindCtx = null;
}
return(name);
}
int MkParseDisplayName( UCOMIBindCtx pbc, string szUserName, ref int pchEaten, out UCOMIMoniker ppmk);
int CreateBindCtx( int reserved, out UCOMIBindCtx ppbc);
public static extern uint CreateBindCtx(uint res, out UCOMIBindCtx ctx);
public static extern uint CreateBindCtx(uint res, out UCOMIBindCtx ctx);
public int MonikerBindToObject(UCOMIMoniker pMk, UCOMIBindCtx pBC, IntPtr pBSC, Guid riid, out object ppvObj)
{
// TODO: Add IAMFilterGraphCallbackTest.MonikerBindToObject implementation
ppvObj = null;
return(0);
}
// 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;
}
}
}
public static extern int MkParseDisplayName(UCOMIBindCtx pcb, [MarshalAs(UnmanagedType.LPWStr)] string szUserName, out int pchEaten, out UCOMIMoniker ppmk);
int MkParseDisplayName(
UCOMIBindCtx pbc,
string szUserName,
ref int pchEaten,
out UCOMIMoniker ppmk);
int CreateBindCtx(
int reserved,
out UCOMIBindCtx ppbc);
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;
}
}
}
protected void CalcRunningObjName(UCOMIRunningObjectTable rot,
UCOMIBindCtx bc,
UCOMIMoniker moniker,
String monikerName)
{
_moniker = moniker;
_monikerName = monikerName;
// FIXME - Does not work because IsRunning is defined
// incorrectly in the IRunningObjectTable mapping
//IsRunning = rot.IsRunning(Moniker);
// Get the object from the table
_isRunningObjectTable = true;
// Persist Guid is probably not used for anything, but
// let's get it anyway
Guid persistGuid = new Guid();
_moniker.GetClassID(out persistGuid);
_persistGuid = persistGuid;
// GUID is the *real* CLSID for the object
String rotProgId = null;
if (_monikerName.StartsWith("!{"))
{
int guidStart = _monikerName.IndexOf('{');
int guidEnd = _monikerName.IndexOf('}');
if (guidStart != -1 && guidEnd != -1)
{
_CLSID =
_monikerName.Substring(guidStart, guidEnd);
_classIdKey = Windows.KeyCLSID.OpenSubKey(_CLSID);
if (_classIdKey != null)
{
String progId = (String)
_classIdKey.OpenSubKey("ProgID").
GetValue(null);
_classNameKey =
Windows.KeyClassRoot.OpenSubKey(progId);
rotProgId = progId
+ _monikerName.Substring(guidEnd + 1);
}
}
// Use the translated progId if available
if (rotProgId != null)
_monikerDisplayName = rotProgId;
else
_monikerDisplayName = _monikerName;
}
else
{
// The moniker is something else, just use that
_monikerDisplayName = _monikerName;
}
}
public static extern int MkParseDisplayName(UCOMIBindCtx pcb, [MarshalAs(UnmanagedType.LPWStr)] string szUserName, out int pchEaten, out UCOMIMoniker ppmk);
public static extern int CreateBindCtx(int reserved, out UCOMIBindCtx ppbc);
private static extern int CreateBindCtx(int res, out UCOMIBindCtx ctx);
CreateBindCtx(uint reserved, out UCOMIBindCtx bc);
CreateBindCtx(uint reserved,
out UCOMIBindCtx bc);
public static extern int CreateBindCtx(int reserved,
out UCOMIBindCtx ppbc);
public int CreateMoniker(string szName, UCOMIBindCtx pBC, out UCOMIMoniker ppmk, int dwReserved)
{
// TODO: Add IAMFilterGraphCallbackTest.CreateMoniker implementation
ppmk = null;
return(0);
}
