/// <summary>
/// Wraps the WMCreateWriterNetworkSink function
/// </summary>
/// <returns>The network sink object</returns>
public static IWMWriterNetworkSink CreateWriterNetworkSink()
{
IWMWriterNetworkSink res = null;
Marshal.ThrowExceptionForHR(WMCreateWriterNetworkSink(out res));
return(res);
}
private void Config()
{
IWMWriterNetworkSink pWMWriterNetworkSink = null;
WMUtils.WMCreateWriterNetworkSink(out pWMWriterNetworkSink);
m_pAddressAccess = (IWMAddressAccess2)pWMWriterNetworkSink;
}
/// <summary>
/// Retreives the Sink URL, as reported by the given network writer sink
/// </summary>
/// <param name="networkSink">sink to analyze</param>
/// <returns>a string of the URL.</returns>
private string GetURL(IWMWriterNetworkSink networkSink)
{
int iSize = 0;
// Call the function once to get the size
networkSink.GetHostURL(null, ref iSize);
StringBuilder sRet = new StringBuilder(iSize, iSize);
networkSink.GetHostURL(sRet, ref iSize);
// Trim off the trailing null
return(sRet.ToString().Substring(0, iSize - 1));
}
/// <summary>
/// Dispose of everything that may need disposing.
/// </summary>
public void Cleanup()
{
scriptBitrate = 0;
writerAdvanced = null;
writer = null;
netSink = null;
fileSink = null;
audioProps = null;
videoProps = null;
audioInput = 0;
videoInput = 0;
scriptStreamNumber = 0;
profileManager = null;
}
public override void Dispose(bool disposing)
{
AppLogger.Message("ASFNetSink -- Dispose called");
if (_eventTimer != null)
{
_eventTimer.Enabled = false;
}
if (_netSink != null)
{
try
{
IWMRegisterCallback iCallback = (IWMRegisterCallback)_netSink;
iCallback.Unadvise(this, IntPtr.Zero);
_netSink.Close();
}
catch (Exception ex)
{
AppLogger.Dump(ex);
}
finally
{
Marshal.ReleaseComObject(_netSink);
_netSink = null;
}
}
if (_writerAdvanced != null)
{
RemoveAllSinks(_writerAdvanced);
Marshal.ReleaseComObject(_writerAdvanced);
_writerAdvanced = null;
}
if (_writer != null)
{
Marshal.ReleaseComObject(_writer);
_writer = null;
}
if (_asfFilter != null)
{
Marshal.ReleaseComObject(_asfFilter);
_asfFilter = null;
}
base.Dispose(disposing);
}
/// <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 WMWriter(MediaBuffer mb)
{
eventLog = new EventLog("WMG", ".", "WMGCore");
mb.OnSampleReady += new MediaBuffer.sampleReadyHandler(ReceiveSample);
scriptBitrate = 0;
writerAdvanced = null;
writer = null;
netSink = null;
fileSink = null;
audioProps = null;
videoProps = null;
audioInput = 0;
videoInput = 0;
scriptStreamNumber = 0;
lastWriteTime = 0;
profileManager = null;
writeFailed = false;
}
/// <summary> Shut down capture </summary>
private void CloseInterfaces()
{
int hr;
try
{
if (m_mediaCtrl != null)
{
// Stop the graph
hr = m_mediaCtrl.Stop();
m_mediaCtrl = null;
m_bRunning = false;
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
if (m_pNetSink != null)
{
m_pNetSink.Close();
Marshal.ReleaseComObject(m_pNetSink);
m_pNetSink = null;
}
#if DEBUG
// Remove graph from the ROT
if (m_rot != null)
{
m_rot.Dispose();
m_rot = null;
}
#endif
if (m_graphBuilder != null)
{
Marshal.ReleaseComObject(m_graphBuilder);
m_graphBuilder = null;
}
}
private static extern int WMCreateWriterNetworkSink([Out, MarshalAs(UnmanagedType.Interface)] out IWMWriterNetworkSink ppSink);
public static extern int WMCreateWriterNetworkSink(
out IWMWriterNetworkSink ppSink
);
/// <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);
}
