private void doStop(CSourceOperation pOp)
{
Debug.Assert(pOp.Type == SourceOperationType.Operation_Stop);
HResult hr = HResult.S_OK;
try
{
foreach (var stream in _streams)
{
var cs = (stream as MediaStream);
if (cs.IsActive)
{
ThrowIfError(cs.Flush());
ThrowIfError(cs.Stop());
}
}
}
catch (Exception ex)
{
hr = (HResult)ex.HResult;
}
// Send the "stopped" event. This might include a failure code.
_spEventQueue.QueueEventParamVar(MediaEventType.MESourceStopped, Guid.Empty, hr, null);
}
public HResult Stop()
{
HResult hr = HResult.S_OK;
CSourceOperation spStopOp = new CSourceOperation
{
Type = SourceOperationType.Operation_Stop
};
// Queue asynchronous stop
//doStop(spStopOp);
return(hr);
}
public HResult Start(IMFPresentationDescriptor pPresentationDescriptor, Guid pguidTimeFormat, ConstPropVariant pvarStartPos)
{
HResult hr = HResult.S_OK;
// Check parameters.
// Start position and presentation descriptor cannot be NULL.
if (pvarStartPos == null || pPresentationDescriptor == null)
{
return(HResult.E_INVALIDARG);
}
// Check the time format.
if ((pguidTimeFormat != null) && (pguidTimeFormat != Guid.Empty))
{
// Unrecognized time format GUID.
return(HResult.MF_E_UNSUPPORTED_TIME_FORMAT);
}
// Check the data type of the start position.
if (pvarStartPos.GetVariantType() != VariantType.None && pvarStartPos.GetVariantType() != VariantType.Int64)
{
return(HResult.MF_E_UNSUPPORTED_TIME_FORMAT);
}
if (_eSourceState != SourceState.SourceState_Stopped && _eSourceState != SourceState.SourceState_Started)
{
hr = HResult.MF_E_INVALIDREQUEST;
}
if (MFError.Succeeded(hr))
{
// Check if the presentation description is valid.
hr = ValidatePresentationDescriptor(pPresentationDescriptor);
}
if (MFError.Succeeded(hr))
{
CSourceOperation op = new CSourceOperation
{
Type = SourceOperationType.Operation_Start,
PresentationDescriptor = pPresentationDescriptor,
Data = pvarStartPos
};
doStart(op);
}
return(hr);
}
private void doStart(CSourceOperation pOp)
{
Debug.Assert(pOp.Type == SourceOperationType.Operation_Start);
IMFPresentationDescriptor spPD = pOp.PresentationDescriptor;
try
{
SelectStreams(spPD);
_eSourceState = SourceState.SourceState_Starting;
_networkStreamAdapter.SendStartRequest();
_eSourceState = SourceState.SourceState_Started;
ThrowIfError(_spEventQueue.QueueEventParamVar(MediaEventType.MESourceStarted, Guid.Empty, HResult.S_OK, pOp.Data));
}
catch (Exception ex)
{
_spEventQueue.QueueEventParamVar(MediaEventType.MESourceStarted, Guid.Empty, (HResult)ex.HResult, null);
}
}
