public int ReleaseServicePointersImpl()
{
try
{
HRESULT hr = S_OK;
// Enter the shut-down state.
lock (m_ObjectLock)
{
m_RenderState = RENDER_STATE.RENDER_STATE_SHUTDOWN;
}
// Flush any samples that were scheduled.
Flush();
// Clear the media type and release related resources (surfaces, etc).
SetMediaType(null);
// Release all services that were acquired from InitServicePointers.
m_pClock = null;
if (m_pMixer != IntPtr.Zero)
{
Marshal.Release(m_pMixer);
m_pMixer = IntPtr.Zero;
}
m_pMediaEventSink = null;
return hr;
}
catch (Exception _exception)
{
throw _exception;
}
}
public int OnClockStopImpl(long hnsSystemTime)
{
HRESULT hr = S_OK;
lock (m_ObjectLock)
{
hr = CheckShutdown();
if (hr.Failed) return hr;
if (m_RenderState != RENDER_STATE.RENDER_STATE_STOPPED)
{
m_RenderState = RENDER_STATE.RENDER_STATE_STOPPED;
Flush();
}
}
return hr;
}
public int OnClockStartImpl(long hnsSystemTime, long llClockStartOffset)
{
HRESULT hr = S_OK;
lock (m_ObjectLock)
{
hr = CheckShutdown();
if (hr.Failed) return hr;
m_RenderState = RENDER_STATE.RENDER_STATE_STARTED;
// Check if the clock is already active (not stopped).
if (IsActive())
{
// If the clock position changes while the clock is active, it
// is a seek request. We need to flush all pending samples.
if (llClockStartOffset != PRESENTATION_CURRENT_POSITION)
{
Flush();
}
}
ProcessOutputLoop();
}
return hr;
}
public int OnClockRestartImpl(long hnsSystemTime)
{
HRESULT hr = S_OK;
lock (m_ObjectLock)
{
hr = CheckShutdown();
if (hr.Failed) return hr;
// The EVR calls OnClockRestart only while paused.
ASSERT(m_RenderState == RENDER_STATE.RENDER_STATE_PAUSED);
m_RenderState = RENDER_STATE.RENDER_STATE_STARTED;
// Now resume the presentation loop.
ProcessOutputLoop();
}
return hr;
}
public int OnClockPauseImpl(long hnsSystemTime)
{
HRESULT hr = S_OK;
lock (m_ObjectLock)
{
// We cannot pause the clock after shutdown.
hr = CheckShutdown();
if (hr.Failed) return hr;
// Set the state. (No other actions are necessary.)
m_RenderState = RENDER_STATE.RENDER_STATE_PAUSED;
}
return hr;
}
public int InitServicePointersImpl(IntPtr pLookup)
{
try
{
if (pLookup == IntPtr.Zero) return E_POINTER;
HRESULT hr = S_OK;
lock (m_ObjectLock)
{
// Do not allow initializing when playing or paused.
if (IsActive()) return MFHelper.MF_E_INVALIDREQUEST;
if (m_pMixer != IntPtr.Zero)
{
Marshal.Release(m_pMixer);
m_pMixer = IntPtr.Zero;
}
m_pClock = null;
m_pMediaEventSink = null;
uint dwObjectCount;
MFTopologyServiceLookup _lookUp = new MFTopologyServiceLookup(pLookup);
if (hr.Succeeded)
{
// Ask for the clock. Optional, because the EVR might not have a clock.
dwObjectCount = 1;
IntPtr[] o = new IntPtr[dwObjectCount];
_lookUp.LookupService(
MFServiceLookUpType.GLOBAL,
0,
MFServices.MR_VIDEO_RENDER_SERVICE,
typeof(IMFClock).GUID,
o,
ref dwObjectCount
);
if (o[0] != IntPtr.Zero && dwObjectCount > 0)
{
m_pClock = (IMFClock)Marshal.GetObjectForIUnknown(o[0]);
}
// Ask for the mixer. (Required.)
dwObjectCount = 1;
hr = (HRESULT)_lookUp.LookupService(
MFServiceLookUpType.GLOBAL,
0,
MFServices.MR_VIDEO_MIXER_SERVICE,
typeof(IMFTransform).GUID,
o,
ref dwObjectCount);
hr.Assert();
if (o[0] != IntPtr.Zero && dwObjectCount > 0)
{
m_pMixer = o[0];
}
hr = ConfigureMixer((IMFTransform)Marshal.GetObjectForIUnknown(m_pMixer));
hr.Assert();
if (hr.Failed) return hr;
o[0] = IntPtr.Zero;
// Ask for the EVR's event-sink interface. (Required.)
dwObjectCount = 1;
hr = (HRESULT)_lookUp.LookupService(
MFServiceLookUpType.GLOBAL,
0,
MFServices.MR_VIDEO_RENDER_SERVICE,
typeof(IMediaEventSink).GUID,
o,
ref dwObjectCount);
hr.Assert();
if (hr.Failed) return hr;
if (o[0] != IntPtr.Zero && dwObjectCount > 0)
{
m_pMediaEventSink = new MediaEventSink(o[0]);
}
// Successfully initialized. Set the state to "stopped."
m_RenderState = RENDER_STATE.RENDER_STATE_STOPPED;
}
_lookUp.Dispose();
}
return hr;
}
catch (Exception _exception)
{
throw _exception;
}
}
