//public void InitServicePointers(IMFTopologyServiceLookup pLookup)
public int InitServicePointers(IntPtr p1Lookup)
{
// Make sure we *never* leave this entry point with an exception
try
{
TRACE(("InitServicePointers"));
int hr;
int dwObjectCount = 0;
IMFTopologyServiceLookup pLookup = null;
IHack h1 = (IHack)new Hack();
try
{
h1.Set(p1Lookup, typeof(IMFTopologyServiceLookup).GUID, true);
pLookup = (IMFTopologyServiceLookup)h1;
lock (this)
{
// Do not allow initializing when playing or paused.
if (IsActive())
{
throw new COMException("EVRCustomPresenter::InitServicePointers", MFError.MF_E_INVALIDREQUEST);
}
SafeRelease(m_pClock); m_pClock = null;
SafeRelease(m_pMixer); m_pMixer = null;
SafeRelease(m_h2); m_h2 = null;
m_pMediaEventSink = null; // SafeRelease(m_pMediaEventSink);
dwObjectCount = 1;
object[] o = new object[1];
try
{
// Ask for the clock. Optional, because the EVR might not have a clock.
hr = pLookup.LookupService(
MFServiceLookupType.Global, // Not used.
0, // Reserved.
MFServices.MR_VIDEO_RENDER_SERVICE, // Service to look up.
typeof(IMFClock).GUID, // Interface to look up.
o,
ref dwObjectCount // Number of elements in the previous parameter.
);
MFError.ThrowExceptionForHR(hr);
m_pClock = (IMFClock)o[0];
}
catch { }
// Ask for the mixer. (Required.)
dwObjectCount = 1;
hr = pLookup.LookupService(
MFServiceLookupType.Global,
0,
MFServices.MR_VIDEO_MIXER_SERVICE,
typeof(IMFTransform).GUID,
o,
ref dwObjectCount
);
MFError.ThrowExceptionForHR(hr);
m_pMixer = (IMFTransform)o[0];
// Make sure that we can work with this mixer.
ConfigureMixer(m_pMixer);
// Ask for the EVR's event-sink interface. (Required.)
dwObjectCount = 1;
IMFTopologyServiceLookupAlt pLookup2 = (IMFTopologyServiceLookupAlt)pLookup;
IntPtr[] p2 = new IntPtr[1];
hr = pLookup2.LookupService(
MFServiceLookupType.Global,
0,
MFServices.MR_VIDEO_RENDER_SERVICE,
typeof(IMediaEventSink).GUID,
p2,
ref dwObjectCount
);
MFError.ThrowExceptionForHR(hr);
m_h2 = (IHack)new Hack();
m_h2.Set(p2[0], typeof(IMediaEventSink).GUID, false);
m_pMediaEventSink = (IMediaEventSink)m_h2;
// Successfully initialized. Set the state to "stopped."
m_RenderState = RenderState.Stopped;
}
}
finally
{
SafeRelease(h1);
}
return S_Ok;
}
catch (Exception e)
{
return Marshal.GetHRForException(e);
}
}
