/// <summary>
/// Adds a IWMWriterNetworkSink to the current AsfWriter output filter
/// </summary>
/// <param name="streamPort">The port out of which to stream the transcoded file</param>
private void AddStreamSinkToCurrentOutputFilter(int streamPort)
{
int hr;
DirectShowLib.IServiceProvider pServiceProvider; // http://msdn.microsoft.com/en-us/library/dd390985%28VS.85%29.aspx
WMAsfWriter asfwriter = (WMAsfWriter)currentOutputFilter;
pServiceProvider = (DirectShowLib.IServiceProvider)asfwriter;
// Get access to WMwriterAdvanced2 object using pServiceProvider (poss not futureproof) (see http://groups.google.com/group/microsoft.public.win32.programmer.directx.video/browse_thread/thread/36b154d41cb76ffd/c571d6ef56de11af?#c571d6ef56de11af )
DsGuid dsgWMwriterAdvanced2 = DsGuid.FromGuid(new Guid(GUIDs.IWMWriterAdvanced2));
IWMWriterAdvanced2 WMWriterAdvanced2 = null;
object o = null;
hr = pServiceProvider.QueryService(dsgWMwriterAdvanced2, dsgWMwriterAdvanced2, out o); // FAILS IN A STA THREAD
DsError.ThrowExceptionForHR(hr);
WMWriterAdvanced2 = (IWMWriterAdvanced2)o;
IWMWriterNetworkSink nsink;
WMUtils.WMCreateWriterNetworkSink(out nsink);
NetworkSink = nsink;
dc.Add(nsink);
nsink.SetMaximumClients(1);
nsink.SetNetworkProtocol(NetProtocol.HTTP);
NetworkSink.Open(ref streamPort); // Will throw exception if port is in use
int nSinks;
WMWriterAdvanced2.GetSinkCount(out nSinks);
if (nSinks > 0)
{
IWMWriterSink pSink = null;
WMWriterAdvanced2.GetSink(0, out pSink);
if (pSink != null)
{
WMWriterAdvanced2.RemoveSink(pSink);
}
Marshal.ReleaseComObject(pSink); pSink = null;
}
WMWriterAdvanced2.AddSink(NetworkSink);
}
public void Init(Hashtable config = null)
{
//m_FilterGraph = (IFilterGraph2)new FilterGraph();
m_FilterGraph = (IGraphBuilder)Activator.CreateInstance(Type.GetTypeFromCLSID(Clsid.FilterGraph, true));
// Get the ICaptureGraphBuilder2
Guid clsid = Clsid.CaptureGraphBuilder2;
Guid riid = typeof(ICaptureGraphBuilder2).GUID;
ICaptureGraphBuilder2 capGraph = (ICaptureGraphBuilder2)DsBugWO.CreateDsInstance(ref clsid, ref riid);
IBaseFilter capVideoFilter = null;
IBaseFilter capAudioFilter = null;
IBaseFilter asfWriter = null;
IServiceProvider serviceProvider = null;
int hr;
object iwmWriter2;
try
{
// Start building the graph
hr = capGraph.SetFiltergraph(m_FilterGraph);
Marshal.ThrowExceptionForHR(hr);
// Add the video device to the graph
if (videoDevChosen != null)
{
capVideoFilter = GetCapFilter(ref videoDevChosen);
hr = m_FilterGraph.AddFilter(capVideoFilter, "Video Capture Device");
Marshal.ThrowExceptionForHR(hr);
}
// Add the audio device to the graph
if (audioDevChosen != null)
{
capAudioFilter = GetCapFilter(ref audioDevChosen);
hr = m_FilterGraph.AddFilter(capAudioFilter, "Audio Capture Device");
Marshal.ThrowExceptionForHR(hr);
}
// if we need some shitty quality
if (config.Contains("shitty"))
{
InitAsfWriter(out asfWriter, true);
}
else
{
InitAsfWriter(out asfWriter);
}
//GEtting IWMAdvancedWriter2;
serviceProvider = (IServiceProvider)asfWriter;
Guid IID_IWMWriterAdvanced2 = new Guid("{962dc1ec-c046-4db8-9cc7-26ceae500817}");
hr = serviceProvider.QueryService(IID_IWMWriterAdvanced2, IID_IWMWriterAdvanced2, out iwmWriter2);
Marshal.ThrowExceptionForHR(hr);
m_writerAdvanced2 = (IWMWriterAdvanced2)iwmWriter2;
m_writerAdvanced2.SetLiveSource(true);
if (config.ContainsKey("cap"))
{
outputFilename = config["cap"] as string;
Console.WriteLine("[MODE] Capturing to a local file: {0}", outputFilename);
}
IFileSinkFilter cap = (IFileSinkFilter)asfWriter;
cap.SetFileName(outputFilename, null);
if (!config.ContainsKey("cap"))
{
//deleting useless sink (writer to a file on a disk).
IWMWriterSink uselessSink = null;
m_writerAdvanced2.GetSink(0, out uselessSink);
m_writerAdvanced2.RemoveSink(uselessSink);
if (uselessSink != null)
{
Marshal.ReleaseComObject(uselessSink);
uselessSink = null;
}
}
if (config.Contains("send"))
{
string url = config["send"] as string;
Console.WriteLine("[MODE] Streaming to a remote server: {0}", url);
WriterNetworkSink sender = new WriterNetworkSink(url);
m_writerAdvanced2.AddSink(sender);
}
if (config.Contains("share"))
{
int port = (int)config["share"];
WriterNetworkSink listener = new WriterNetworkSink(port);
Console.WriteLine("[MODE] Started listening on port {0}", port);
m_writerAdvanced2.AddSink(listener);
}
//Connecting VideoDev to asfWriter
if (videoDevChosen != null)
{
hr = capGraph.RenderStream(PinCategory.Capture, MediaType.Video, capVideoFilter, null, asfWriter);
//hr = capGraph.RenderStream(null, null, capVideoFilter, null, asfWriter);
Marshal.ThrowExceptionForHR(hr);
}
//Connecting AudioDev to asfWriter
if (audioDevChosen != null)
{
hr = capGraph.RenderStream(PinCategory.Capture, MediaType.Audio, capAudioFilter, null, asfWriter);
//hr = capGraph.RenderStream(null, null, capAudioFilter, null, asfWriter);
Marshal.ThrowExceptionForHR(hr);
}
m_mediaCtrl = m_FilterGraph as IMediaControl;
//debug, dumps graph
//DirectShowLib.Utils.FilterGraphTools.SaveGraphFile(m_FilterGraph, ".\\mygraph.grf");
}
finally
{
if (capVideoFilter != null)
{
Marshal.ReleaseComObject(capVideoFilter);
capVideoFilter = null;
}
if (capAudioFilter != null)
{
Marshal.ReleaseComObject(capAudioFilter);
capAudioFilter = null;
}
if (asfWriter != null)
{
Marshal.ReleaseComObject(asfWriter);
asfWriter = null;
}
if (capGraph != null)
{
Marshal.ReleaseComObject(capGraph);
capGraph = null;
}
if (serviceProvider != null)
{
Marshal.ReleaseComObject(serviceProvider);
serviceProvider = null;
}
}
Console.WriteLine("INIT done");
}
