/// <summary>Saves a graph to a GRF file.</summary>
/// <param name="graph">The graph to be saved.</param>
/// <param name="path">Path to the target GRF file.</param>
private static void SaveGraphToFile(IGraphBuilder graph, string path)
{
using(DisposalCleanup dc = new DisposalCleanup())
{
// Get the graph's persist stream interface
IPersistStream ps = (IPersistStream)graph;
// Create the file to which the graph should be stored
IStorage graphStorage = StgCreateDocfile(path, (int)(STGM_CREATE | STGM_TRANSACTED | STGM_READWRITE | STGM_SHARE_EXCLUSIVE), 0);
dc.Add(graphStorage);
// Create the movie graph stream
IStream stream = graphStorage.CreateStream("ActiveMovieGraph", (int)(STGM_WRITE | STGM_CREATE | STGM_SHARE_EXCLUSIVE), 0, 0);
dc.Add(stream);
// Save out the graph and commit it
ps.Save(stream, true);
graphStorage.Commit(0);
}
}
/// <summary>Runs the conversion synchronously.</summary>
/// <returns>The result of the conversion.</returns>
public object Convert()
{
_cancellationPending = false;
try
{
object result;
using(_dc = new DisposalCleanup())
{
// Do the actual work
result = DoWork();
}
OnConversionComplete(null, result);
return result;
}
catch(DirectShowException exc)
{
OnConversionComplete(exc, null);
throw;
}
catch(Exception exc)
{
exc = new DirectShowException(exc);
OnConversionComplete(exc, null);
throw exc;
}
}