public void RequestSample(/*IUnknown*/ IntPtr pToken)
{
CheckShutdown();
if (!IsActive || (!MediaSource.IsPlaying && !MediaSource.IsPaused))
{
throw new SharpDXException(ResultCode.InvalidRequest);
}
//Trace.WriteLine($"RtspMediaStream<{Type}>::RequestSample()");
try {
_requestQueue.Enqueue(ComObjectUtils.Attach(pToken));
if (!_sampleQueue.IsEmpty)
{
DeliverSamples();
}
_isSampleQueueEmpty.OnNext(_sampleQueue.IsEmpty);
//if(Type == StreamType.Video) {
// Debug.WriteLine($"RtspMediaStream<{Type}>::RequestSample(): SampleQueue={_sampleQueue.Count} RequestQueue={_requestQueue.Count}");
//}
} catch (Exception ex) {
if (!MediaSource.IsShutdown)
{
_eventGenerator.QueueEventParamErr(ex.HResult);
}
Debug.WriteLine($"RtspMediaStream<{Type}>::RequestSample(): Error={ex.Message}");
throw;
}
}
public void Start(/*IMFPresentationDescriptor*/ IntPtr pPresentationDescriptor, ref Guid pguidTimeFormat, ref Variant pvarStartPosition)
{
CheckShutdown();
Trace.WriteLine("RtspMediaSource::Start()");
if (!IsStopped && !IsPaused)
{
throw new SharpDXException(ResultCode.InvalidStateTransition);
}
if (pguidTimeFormat != null && pguidTimeFormat != Guid.Empty)
{
throw new SharpDXException(ResultCode.UnsupportedTimeFormat);
}
if (pPresentationDescriptor == IntPtr.Zero)
{
throw new ArgumentNullException();
}
var pd = ComObjectUtils.AttachAs <PresentationDescriptor>(pPresentationDescriptor);
try {
// Get stream selection
var selection = new bool[_streams.Length];
for (var i = 0; i < pd.StreamDescriptorCount; i++)
{
RawBool isSelected;
var sdesc = pd.GetStreamDescriptorByIndex(i, out isSelected);
var id = sdesc.StreamIdentifier;
switch (id)
{
case (int)RtspMediaStream.StreamType.Video:
case (int)RtspMediaStream.StreamType.Audio:
selection[id] = isSelected;
break;
default:
throw new ArgumentException();
}
}
// Activate selected stream
for (var i = 0; i < selection.Length; i++)
{
if (selection[i])
{
using (var comStream = new ComObject(_streams[i])) {
if (_streams[i].IsActive)
{
// stream updated
_eventGenerator.QueueEventParamUnk(MediaEventTypes.UpdatedStream, Guid.Empty, Result.Ok, comStream);
}
else
{
// new stream started
_streams[i].Activate();
_eventGenerator.QueueEventParamUnk(MediaEventTypes.NewStream, Guid.Empty, Result.Ok, comStream);
}
}
}
else
{
_streams[i].Deactivate();
}
}
// Ignore pvarStartPosition
_bufferingStartedSent = false;
ChangeState(SourceState.Playing);
_eventGenerator.QueueEventParamVar(MediaEventTypes.SourceStarted, Guid.Empty, Result.Ok, new Variant {
Value = 0L
});
} catch (Exception ex) {
if (!IsShutdown)
{
_eventGenerator.QueueEventParamErr(ex.HResult);
}
throw;
} finally {
pd?.Dispose();
}
}