private void SetupOutputPipeline(IDAQController c, out IOutputData expectedOutput, out DAQOutputStream outStream)
{
string units = "V";
var data = Enumerable.Range(0, 1000).Select(i => new Measurement(i, units)).ToList();
var sampleRate = new Measurement(100, "Hz");
var config = new Dictionary <string, object>();
expectedOutput = new OutputData(data,
sampleRate, true);
outStream = new DAQOutputStream("OUT");
outStream.SampleRate = sampleRate;
outStream.MeasurementConversionTarget = units;
(c as IMutableDAQController).AddStream(outStream);
var outQueue = new Dictionary <IDAQOutputStream, Queue <IOutputData> >();
outQueue[outStream] = new Queue <IOutputData>();
outQueue[outStream].Enqueue(expectedOutput);
TestDevice dev = new TestDevice("OUT-DEVICE", outQueue);
dev.BindStream(outStream);
dev.MeasurementConversionTarget = units;
}
public void PreloadShouldFeedBuffer()
{
/*
* We want to keep HardwareBufferTargetDuration available in the hardware buffer.
*/
Converters.Clear();
HekaDAQOutputStream.RegisterConverters();
var itcMock = new Mock <IHekaDevice>();
StreamType channelType = StreamType.ANALOG_OUT;
ushort channelNumber = 0;
var time = DateTimeOffset.Now;
int availableSamplesStart = 1000000;
int availableSamples = availableSamplesStart;
//itcMock.Setup(itc => itc.AvailableSamples(channelType, channelNumber)).Returns(availableSamples);
itcMock.Setup(itc => itc.PreloadSamples(channelType, channelNumber, It.IsAny <IList <short> >()))
.Callback <StreamType, ushort, IList <short> >((type, number, sampleList) => availableSamples -= sampleList.Count);
var controller = new HekaDAQController();
HekaDAQOutputStream s = new HekaDAQOutputStream("OUT", channelType, channelNumber, controller);
s.MeasurementConversionTarget = "V";
controller.SampleRate = new Measurement(10000, 1, "Hz");
var dataQueue = new Dictionary <IDAQOutputStream, Queue <IOutputData> >();
dataQueue[s] = new Queue <IOutputData>();
var bigData = new OutputData(Enumerable.Range(0, 100000).Select(i => new Measurement(i % 5, "V")).ToList(),
s.SampleRate, false);
TimeSpan bufferDuration = TimeSpan.FromSeconds(0.45);
dataQueue[s].Enqueue(bigData.SplitData(bufferDuration).Head);
dataQueue[s].Enqueue(bigData.SplitData(bufferDuration).Head);
TestDevice dev = new TestDevice("OUT-DEVICE", dataQueue);
dev.BindStream(s);
dev.Controller = new Controller();
s.Preload(itcMock.Object as IHekaDevice, new OutputData(dataQueue[s].Peek()));
int expectedSamples = (int)Math.Ceiling(bufferDuration.TotalSeconds * (double)s.SampleRate.QuantityInBaseUnit);
itcMock.VerifyAll();
Assert.AreEqual(availableSamplesStart - expectedSamples, availableSamples); //Preload should not affect buffer availablility because PRELOAD_FIFO is used
}