protected CaptureGraph(FilterInfo fiSource)
{
try
{
// Fgm initialization
fgm = new FilgraphManagerClass();
iFG = (IFilterGraph)fgm;
iGB = (IGraphBuilder)fgm;
rotID = FilterGraph.AddToRot(iGB);
// Create source filter and initialize it
source = (SourceFilter)Filter.CreateFilter(fiSource);
iGB.AddFilter(source.BaseFilter, source.FriendlyName);
source.AddedToGraph(fgm);
// Pass flags to the RtpRenderer filter from the config file.
this.rtpRendererFlags = 0;
string setting = ConfigurationManager.AppSettings[AppConfig.MDS_RtpRendererFlags];
if (!String.IsNullOrEmpty(setting))
{
if (!byte.TryParse(setting, out rtpRendererFlags))
{
rtpRendererFlags = 0;
}
}
}
catch (Exception)
{
Cleanup();
throw;
}
}
private void Cleanup()
{
if (fgm != null)
{
fgm.Stop();
FilterGraph.RemoveAllFilters(fgm);
FilterGraph.RemoveFromRot(rotID);
iGB = null;
iFG = null;
fgm = null;
}
DisposeSource();
DisposeCompressor();
DisposeRenderer();
}
protected CaptureGraph(FilterInfo fiSource)
{
try
{
// Fgm initialization
fgm = new FilgraphManagerClass();
iFG = (IFilterGraph)fgm;
iGB = (IGraphBuilder)fgm;
rotID = FilterGraph.AddToRot(iGB);
// Create source filter and initialize it
source = (SourceFilter)Filter.CreateFilter(fiSource);
iGB.AddFilter(source.BaseFilter, source.FriendlyName);
source.AddedToGraph(fgm);
}
catch (Exception)
{
Cleanup();
throw;
}
}
/// <summary>
/// Removes all filters from the graph, starting at the end and working
/// back to but not including "start"
/// </summary>
public void RemoveFiltersDownstreamFrom(Filter start)
{
if (start == null)
{
string msg = "Null is not a valid value for parameter 'start'";
Debug.Fail(msg);
throw new ArgumentNullException("start", msg);
}
if (start != source && start != compressor)
{
string msg = "The 'start' parameter must be either the 'source' or 'compressor' filter";
Debug.Fail(msg);
throw new ArgumentOutOfRangeException("start", msg);
}
Stop();
foreach (IBaseFilter iBF in FilterGraph.FiltersInGraph(iFG))
{
if (iBF == start.BaseFilter)
{
// We're done if we are back to the start filter
break;
}
iFG.RemoveFilter(iBF);
}
DisposeRenderer();
if (start == source)
{
DisposeCompressor();
}
}
