public IObservable <TResult> Generate()
{
var source = Observable.Create <ONIManagedFrame <TData> >(async observer =>
{
var cd = await ONIContextManager.ReserveOpenContextAsync(DeviceAddress.HardwareSlot);
var in_table = cd.Context.DeviceTable.TryGetValue((uint)DeviceAddress.Address, out var device);
if (!in_table || device.ID != (int)ID)
{
throw new WorkflowException("Selected device address is invalid.");
}
EventHandler <FrameReceivedEventArgs> frame_received = (sender, e) =>
{
if (e.Frame.DeviceAddress == DeviceAddress.Address)
{
ONIManagedFrame <TData> frame = new ONIManagedFrame <TData>(e.Frame);
observer.OnNext(frame);
}
};
cd.Context.FrameReceived += frame_received;
return(Disposable.Create(() =>
{
cd.Context.FrameReceived -= frame_received;
cd.Dispose();
}));
});
ulong frameOffset = FrameClockOffset;
return(Process(source, frameOffset));
}
public IObservable <TSource> Process(IObservable <TSource> source)
{
return(Observable.Using(
cancellationToken => ONIContextManager.ReserveOpenContextAsync(DeviceAddress.HardwareSlot),
(contextDisposable, cancellationToken) =>
{
return ONIXDeviceDescriptor.IsValid(ID, DeviceAddress)
? Task.FromResult(source
.Do(input => { OnNext(contextDisposable.Context, input); })
.Finally(() => OnFinally(contextDisposable.Context)))
: throw new WorkflowException("Selected device address is invalid.");
}
));
}
public IObservable <TResult> Generate(IObservable <TSource> source)
{
return(Observable.Create <TResult>(async observer =>
{
var cd = await ONIContextManager.ReserveOpenContextAsync(DeviceAddress.HardwareSlot);
var in_table = cd.Context.DeviceTable.TryGetValue((uint)DeviceAddress.Address, out var device);
if (!in_table || device.ID != (int)ID)
{
throw new WorkflowException("Selected device address is invalid.");
}
var source_sub = source.Subscribe(
input =>
{
try
{
Write(cd.Context, input);
}
catch (Exception ex)
{
observer.OnError(ex);
}
},
observer.OnError,
() => { });
return new CompositeDisposable(
Generate().SubscribeSafe(observer),
Disposable.Create(() =>
{
cd.Dispose();
source_sub.Dispose();
})
);
}));
}
