StartCapture()
{
int hr;
if (m_DeviceSelected)
{
if (m_strFile != null)
{
// re-enable capture stream
IAMStreamControl pSC = (IAMStreamControl)m_pCapOutput;
// immediately!
pSC.StartAt(null, 0); // Ignore any error
// start capture graph
IMediaControl pMC = (IMediaControl)m_pCaptureGraph;
hr = pMC.Run();
DsError.ThrowExceptionForHR(hr);
hr = m_pBridge.BridgeGraphs(m_pSourceGraphSinkFilter, m_pCaptureGraphSourceFilter);
DsError.ThrowExceptionForHR(hr);
// If we make it here, we are capturing
m_Capturing = true;
}
else
{
throw new Exception("File name not specified");
}
}
else
{
throw new Exception("Device not selected");
}
}
/// <summary>
/// stops any current recording and deletes the recording graph
/// </summary>
protected void StopAndDeleteRecordingGraph()
{
lock (instanceMutex)
{
if (_fileSinkMediaControl != null)
{
_fileSinkMediaControl.StopWhenReady();
}
if (_bridgeController != null)
{
_bridgeController.BridgeGraphs(null, null);
}
if (_bridgeSource != null)
{
Marshal.FinalReleaseComObject(_bridgeSource);
_bridgeSource = null;
}
if (_muxer != null)
{
Marshal.FinalReleaseComObject(_muxer);
_muxer = null;
}
if (_fileSink != null)
{
Marshal.FinalReleaseComObject(_fileSink);
_fileSink = null;
}
if (_fileSinkGraphBuilder != null)
{
Marshal.FinalReleaseComObject(_fileSinkGraphBuilder);
_fileSinkGraphBuilder = null;
}
if (_fileSinkCaptureGraphBuilder != null)
{
Marshal.FinalReleaseComObject(_fileSinkCaptureGraphBuilder);
_fileSinkCaptureGraphBuilder = null;
}
}
}
public void OnEndOfSegment1()
{
if (m_itCurrent == m_Clips.Count)
{
// ? already at the end
return;
}
int itOld = m_itCurrent;
// locate next graph
if (m_pPlayNext < 0)
{
m_itCurrent++;
if (m_itCurrent == m_Clips.Count)
{
if (!m_bLoop)
{
// no more clips, so allow EOS to propagate through
// render graph. We will receive EC_COMPLETE eventually.
m_pController.NoMoreSegments();
// disconnect graphs -- but we cannot do that until NoMoreSegments has
// sent the EndOfStream through the bridge
m_pController.BridgeGraphs(null, null);
return;
}
else
{
m_pController.BridgeGraphs(null, null);
m_itCurrent = 0;
}
}
}
else
{
m_itCurrent = m_pPlayNext;
m_pPlayNext = -1;
}
// disconnect graphs before seeking the source graph
m_tStartPosition = 0;
ClipEntry ce = (ClipEntry)m_Clips[m_itCurrent];
// looping to same graph? rewind now
if (m_itCurrent == itOld)
{
ce.Prime(0);
}
else
{
// need to rewind clip for next time round
// unless we are reusing it immediately (ie looping single clip)
// it's better to do this when not in use
ClipEntry ce3 = (ClipEntry)m_Clips[itOld];
ce3.Prime(0);
}
// now we are about to connect it, so as soon as data is delivered out of the graph it
// is no longer primed for re-use (it will need a new seek before using again)
ce.InUse();
// reconnect
m_pController.BridgeGraphs(ce.SinkFilter(), m_pRenderGraphSourceFilter);
}