WM ASF Writer in C#

[Andy Rama]

In my C#.net 2008 project, I am using WM ASF Writer (only) to record input in WME format. I have some queries regarding that,

1. How to remove file sink from WM ASF Writer filter (programmatically) ?
2. How can I use WME classes & interfaces in C#, like IWMProfileManager, IWMProfileManager2, IWMProfile, IWMWriterAdvanced2, IWMWriterNetworkSink, etc if I want to stream recording content ? Is there any standard library or I can create custom C# library using C++ classes.

[Andrzej Barcis]

Hi,

whats happen when you uncomment line when file name is setting?
Unfortunately you must set file name in correct patch. But this file will be empty.

I do this that:

IFileSinkFilter2 fileSinkFilter = (IFileSinkFilter2)FilterAsfWriter;
hr = fileSinkFilter.SetFileName(settings.WMAStreamFile, null);

...

and RemoveSink...

[Andy Rama]

When I uncomment the line, to set the file name & then call to RemoveSink; WM ASF Writer continues to write that file. But I don't want to write that file.

[Andy Rama]

Using RemoveSink() function call it creates an empty file which is not a major issue for me as it is not going to eat memory space. & I got a suggestion from a link (from Windows Media .Net forum) to delete that file when graph is stopped.

Thanks to you both for your suggestions & comments.

[snarfle]

I'm not sure I understand what you are looking for, but perhaps this will help: http://WindowsMediaNet.SourceForge.Net

[Andy Rama]

snarfle & andrzej_barcis

Thanks you very much for your help.

Thank you snarfle, I got the library.
Thank you andrzej_barcis, I will use those functions

[Andrzej Barcis]

Hello.

Ad. 1

This code remove file sink. As you see I using DirectShow.NET and WindowsMediaLib (http://WindowsMediaNet.SourceForge.Net ).

IBaseFilter FilterAsfWriter; //it's WM ASF Writter
WindowsMediaLib.IWMWriterAdvanced2 AsfWriterAdvanced;
DirectShowLib.IServiceProvider serviceProvider;
WindowsMediaLib.IWMWriterSink ws;

serviceProvider = (DirectShowLib.IServiceProvider) FilterAsfWriter;
serviceProvider.QueryService(writterAdvanced2, writterAdvanced2, out asfWritterAdvancedObject);
AsfWriterAdvanced = (WindowsMediaLib.IWMWriterAdvanced2) asfWritterAdvancedObject;
AsfWriterAdvanced.GetSink(0, out ws);
AsfWriterAdvanced.RemoveSink(ws);

regards

[Andy Rama]

I tried writting code as,

IBaseFilter m_fltWmAsfWriter;
IFileSinkFilter m_FileSink;
WindowsMediaLib.IConfigAsfWriter m_AsfConfig;
IServiceProvider m_ServiceProvider;
object m_AsfWriterAdvancedObject;
IWMWriterAdvanced2 m_WMWA2;
IWMWriterSink m_WmWriterSink;

static IWMProfileManager    m_WMProfileManager;
static IWMProfileManager2   m_WMPM2;
static IWMProfile           m_WMProfile;

DsGuid m_GuidIWMWriterAdvanced2 = new DsGuid("962DC1EC-C046-4DB8-9CC7-26CEAE500817");

m_fltWmAsfWriter = ExtraFunctions.AddFilterByName(m_GraphBuilder, FilterCategory.LegacyAmFilterCategory, cAsfWriter);
if (m_fltWmAsfWriter == null) throw new Exception("Failed to add " + cAsfWriter);
m_FileSink = (IFileSinkFilter)m_fltWmAsfWriter;
m_AsfConfig = (WindowsMediaLib.IConfigAsfWriter)m_fltWmAsfWriter;
m_ServiceProvider = (IServiceProvider)m_fltWmAsfWriter;
m_hResult = m_ServiceProvider.QueryService(m_GuidIWMWriterAdvanced2, m_GuidIWMWriterAdvanced2, out m_AsfWriterAdvancedObject);
DsError.ThrowExceptionForHR(m_hResult);
m_WMWA2 = m_AsfWriterAdvancedObject as IWMWriterAdvanced2;
m_WMWA2.GetSink(0, out m_WmWriterSink);

//m_hResult = m_FileSink.SetFileName(m_rsRecordTempFile, null);
m_WMWA2.RemoveSink(m_WmWriterSink);

But I am getting exception "The filename, directory name, or volume label syntax is incorrect.
" at,

m_hResult = m_MediaControl.Run();
DsError.ThrowExceptionForHR(m_hResult);

[Andrzej Barcis]

I forgot declare this:

object asfWritterAdvancedObject;

[derek w keys]