// Pause the capture graph.
public void Stop()
{
// Can only Stop when playing or paused
if (m_State == GraphState.Running || m_State == GraphState.Paused)
{
int hr = m_mediaCtrl.Stop();
DsError.ThrowExceptionForHR(hr);
m_State = GraphState.Stopped;
}
}
public void Stop(TrackCompletionReason reason, int?newTrackIndex)
{
var hr = 0;
var pos = CurrentPositionTicks;
// Stop media playback
if (_mediaControl != null)
{
hr = _mediaControl.Stop();
}
DsError.ThrowExceptionForHR(hr);
OnStopped(reason, pos, newTrackIndex);
}
bool ProcessSample(IntPtr pBuffer, int dataLen, double sampleTime)
{
// not initialized
if (null == transcoder)
{
return(true);
}
if (sampleTime < 0)
{
sampleTime = 0;
}
if ((null == sampleBuffer) || (sampleBuffer.Length != dataLen))
{
sampleBuffer = new byte[dataLen];
}
Marshal.Copy(pBuffer, sampleBuffer, 0, dataLen);
MediaSample inputSample = new MediaSample();
inputSample.Buffer = new MediaBuffer(sampleBuffer);
inputSample.StartTime = sampleTime;
System.Diagnostics.Debug.WriteLine(string.Format("transcoder.Push(stream: {0}, sampleTime: {1}, sampleData: {2})", transcoderInputIndex, inputSample.StartTime, inputSample.Buffer.DataSize));
// transcoder.Push() is not threads safe.
// lock (transcoder){ } ensure that only one thread is calling transcoder.Push()
lock (transcoder)
{
if (!transcoder.Push(transcoderInputIndex, inputSample))
{
transcoderError = transcoder.Error.Clone() as ErrorInfo;
System.Threading.ThreadPool.QueueUserWorkItem(delegate
{
// call mediaControl.Stop() from a new thread otherwise it will deadlock
int hr = mediaControl.Stop();
}, null);
return(false);
}
}
return(true);
}
/// <summary> Shut down capture </summary>
private void CloseInterfaces()
{
int hr;
try
{
if (m_mediaCtrl != null)
{
// Stop the graph
hr = m_mediaCtrl.Stop();
m_bRunning = false;
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
if (m_graphBuilder != null)
{
Marshal.ReleaseComObject(m_graphBuilder);
m_graphBuilder = null;
}
}