/// <summary>
/// Builds a recording graph that saves the incoming H264 stream to an Ogg container to add
/// support for seeking.
/// </summary>
/// <param name="filename">file to record to</param>
/// <remarks>
/// Since this recording graph does not recompress or decompress any data, it performs its job
/// with little overhead.
/// </remarks>
protected void CreateRecordingGraph(string filename)
{
lock (instanceMutex)
{
//create file recording graph
_fileSinkGraphBuilder = (IGraphBuilder) new FilterGraph();
_fileSinkCaptureGraphBuilder = (ICaptureGraphBuilder2) new CaptureGraphBuilder2();
_fileSinkMediaControl = (IMediaControl)_fileSinkGraphBuilder;
//attach filter graph to capture graph, for recording
int hr = _fileSinkCaptureGraphBuilder.SetFiltergraph(_fileSinkGraphBuilder);
DsError.ThrowExceptionForHR(hr);
//add bridge source to the recording graph, linked to the bridge sink
_bridgeSource = (IBaseFilter)_bridgeController.InsertSourceFilter(_bridgeSink, _fileSinkGraphBuilder);
_muxer = AddFilterByName(_fileSinkGraphBuilder, FilterCategory.LegacyAmFilterCategory, "LEAD MPEG2 Multiplexer (2.0)");
//add the File Writer
_fileSink = AddFilterByName(_fileSinkGraphBuilder, FilterCategory.LegacyAmFilterCategory, "File writer");
_fileSinkFilter = (IFileSinkFilter)_fileSink;
hr = _fileSinkFilter.SetFileName(filename, null);
DsError.ThrowExceptionForHR(hr);
ConnectFilters(_fileSinkGraphBuilder, _bridgeSource, "Output 1", _muxer, "Input 01", true);
ConnectFilters(_fileSinkGraphBuilder, _muxer, "Output 01", _fileSink, "in", false);
}
}
public void SetNextFilename(string pFile)
{
VerifyAccess();
int hr;
ICaptureGraphBuilder2 pBuilder = null;
IBaseFilter pfMux = null;
IFileSinkFilter pSink = null;
if (pFile != null)
{
if (m_captureDevice != null)
{
ReleaseFilenameMembers();
m_pCaptureGraph = (IGraphBuilder) new FilterGraph();
try
{
//m_rot2 = new DsROTEntry(m_pCaptureGraph);
// Use the bridge to add the sourcefilter to the graph
hr = m_pBridge.InsertSourceFilter(m_pSourceGraphSinkFilter, m_pCaptureGraph, out m_pCaptureGraphSourceFilter);
DsError.ThrowExceptionForHR(hr);
// use capture graph builder to create mux/writer stage
pBuilder = (ICaptureGraphBuilder2) new CaptureGraphBuilder2();
hr = pBuilder.SetFiltergraph(m_pCaptureGraph);
DsError.ThrowExceptionForHR(hr);
// create the mux/writer
hr = pBuilder.SetOutputFileName(MediaSubType.Avi, pFile, out pfMux, out pSink);
DsError.ThrowExceptionForHR(hr);
//IConfigAsfWriter lConfig = pfMux as IConfigAsfWriter;
//Guid cat = new Guid("7A747920-2449-4D76-99CB-FDB0C90484D4");
//hr = lConfig.ConfigureFilterUsingProfileGuid(cat);
//Marshal.ThrowExceptionForHR(hr);
// render source output to mux
hr = pBuilder.RenderStream(null, null, m_pCaptureGraphSourceFilter, null, pfMux);
DsError.ThrowExceptionForHR(hr);
// Store the file name for later use
FileName = pFile;
}
catch
{
FreeResources();
}
finally
{
if (pBuilder != null)
{
Marshal.ReleaseComObject(pBuilder);
}
if (pfMux != null)
{
Marshal.ReleaseComObject(pfMux);
}
if (pSink != null)
{
Marshal.ReleaseComObject(pSink);
}
}
}
else
{
throw new Exception("Device not selected");
}
}
else
{
throw new Exception("Invalid parameter");
}
}
SetNextFilename(string pFile)
{
int hr;
ICaptureGraphBuilder2 pBuilder = null;
IBaseFilter pfMux = null;
IFileSinkFilter pSink = null;
if (pFile != null)
{
if (m_DeviceSelected)
{
ReleaseFilenameMembers();
m_pCaptureGraph = (IGraphBuilder) new FilterGraph();
try
{
m_rot2 = new DsROTEntry(m_pCaptureGraph);
// Use the bridge to add the sourcefilter to the graph
hr = m_pBridge.InsertSourceFilter(m_pSourceGraphSinkFilter, m_pCaptureGraph, out m_pCaptureGraphSourceFilter);
DsError.ThrowExceptionForHR(hr);
// use capture graph builder to create mux/writer stage
pBuilder = (ICaptureGraphBuilder2) new CaptureGraphBuilder2();
hr = pBuilder.SetFiltergraph(m_pCaptureGraph);
DsError.ThrowExceptionForHR(hr);
// create the mux/writer
hr = pBuilder.SetOutputFileName(MediaSubType.Avi, pFile, out pfMux, out pSink);
DsError.ThrowExceptionForHR(hr);
// render source output to mux
hr = pBuilder.RenderStream(null, null, m_pCaptureGraphSourceFilter, null, pfMux);
DsError.ThrowExceptionForHR(hr);
// Store the file name for later use
m_strFile = pFile;
}
catch
{
ReleaseFilenameMembers();
}
finally
{
if (pBuilder != null)
{
Marshal.ReleaseComObject(pBuilder);
}
if (pfMux != null)
{
Marshal.ReleaseComObject(pfMux);
}
if (pSink != null)
{
Marshal.ReleaseComObject(pSink);
}
}
}
else
{
throw new Exception("Device not selected");
}
}
else
{
throw new Exception("Invalid parameter");
}
}