private HRESULT RenameOutputPin(SplitterOutputPin pPin, uint oldStreamId, uint newStreamId)
{
// Output Pin was found
// Stop the Graph, remove the old filter, render the graph again, start it up again
// This only works on pins that were connected before, or the filter graph could .. well, break
if (pPin != null && pPin.IsConnected)
{
Logger.Info("RenameOutputPin() - Switching {0} Stream {1} to {2}", pPin.Name, oldStreamId, newStreamId);
IMediaControl pControl = (IMediaControl)FilterGraph;
FilterState oldState;
// Get the graph state
// If the graph is in transition, we'll get the next state, not the previous
var hr = (HRESULT)pControl.GetState(10, out oldState);
// Stop the filter graph
hr = (HRESULT)pControl.Stop();
// Audio Filters get their connected filter removed
// This way we make sure we reconnect to the proper filter
// Other filters just disconnect and try to reconnect later on
PinInfo pInfo;
IPinImpl connectedPin = pPin.Connected;
hr = (HRESULT)connectedPin.QueryPinInfo(out pInfo);
// Update Output Pin
AMMediaType pmt;
if (MediaTypeBuilder.TryGetType(_streamParser.InputStream.AudioStream, out pmt))
{
pPin.SetMediaType(pmt);
}
int mtIdx = connectedPin.QueryAccept(pmt);
bool bMediaTypeFound = (mtIdx >= 0);
if (pInfo.filter != null)
{
bool bRemoveFilter = !bMediaTypeFound;
if (bRemoveFilter)
{
hr = (HRESULT)FilterGraph.RemoveFilter(pInfo.filter);
// Use IGraphBuilder to rebuild the graph
IGraphBuilder pGraphBuilder = (IGraphBuilder)FilterGraph;
// Instruct the GraphBuilder to connect us again
hr = (HRESULT)pGraphBuilder.Render(pPin);
}
else
{
hr = (HRESULT)ReconnectPin(pPin, pmt);
}
pPin.SetMediaType(pmt);
}
// Re-start the graph
if (oldState == FilterState.Paused)
{
hr = (HRESULT)pControl.Pause();
}
else if (oldState == FilterState.Running)
{
hr = (HRESULT)pControl.Run();
}
return(hr);
}
return(E_FAIL);
}