/// <summary>
/// Translates the bytes for a Mode-S message into a cooked message object and causes a message received event to be raised on the background thread.
/// </summary>
/// <param name="now"></param>
/// <param name="extractedBytes"></param>
private void ProcessModeSMessageBytes(DateTime now, ExtractedBytes extractedBytes)
{
if (extractedBytes.Length == 7 || extractedBytes.Length == 14)
{
if (extractedBytes.HasParity)
{
_ModeSParity.StripParity(extractedBytes.Bytes, extractedBytes.Offset, extractedBytes.Length);
}
try {
var modeSMessage = _ModeSMessageTranslator.Translate(extractedBytes.Bytes, extractedBytes.Offset);
if (modeSMessage != null)
{
bool hasPIField = modeSMessage.ParityInterrogatorIdentifier != null;
bool isPIWithBadParity = hasPIField && modeSMessage.ParityInterrogatorIdentifier != 0;
var adsbMessage = _AdsbMessageTranslator.Translate(modeSMessage);
if ((hasPIField || isPIWithBadParity || adsbMessage == null) && _Statistics.Lock != null)
{
lock (_Statistics.Lock) {
if (hasPIField)
{
++_Statistics.ModeSWithPIField;
}
if (isPIWithBadParity)
{
++_Statistics.ModeSWithBadParityPIField;
}
if (adsbMessage == null)
{
++_Statistics.ModeSNotAdsbCount;
}
}
}
++TotalMessages;
_MessageProcessingAndDispatchQueue.Enqueue(new MessageDispatch()
{
ModeSMessageEventArgs = new ModeSMessageEventArgs(now, modeSMessage, adsbMessage)
});
}
} catch (Exception) {
++TotalBadMessages;
if (!IgnoreBadMessages)
{
throw;
}
}
}
}
public void ModeSTranslator_Translate_Throws_If_Statistics_Is_Not_Initialised()
{
_Translator.Statistics = null;
_Translator.Translate(new byte[0], 0, null, false);
}
/// <summary>
/// Translates the bytes for a Mode-S message into a cooked message object and causes a message received event to be raised on the background thread.
/// </summary>
/// <param name="now"></param>
/// <param name="extractedBytes"></param>
private void ProcessModeSMessageBytes(DateTime now, ExtractedBytes extractedBytes)
{
if (extractedBytes.Length == 7 || extractedBytes.Length == 14)
{
if (extractedBytes.HasParity)
{
_ModeSParity.StripParity(extractedBytes.Bytes, extractedBytes.Offset, extractedBytes.Length);
}
try {
var modeSMessage = _ModeSMessageTranslator.Translate(extractedBytes.Bytes, extractedBytes.Offset, extractedBytes.SignalLevel, extractedBytes.IsMlat);
if (modeSMessage != null)
{
bool hasPIField = modeSMessage.ParityInterrogatorIdentifier != null;
bool isPIWithBadParity = hasPIField && modeSMessage.ParityInterrogatorIdentifier != 0;
var adsbMessage = _AdsbMessageTranslator.Translate(modeSMessage);
if ((hasPIField || isPIWithBadParity || adsbMessage == null) && Statistics != null)
{
Statistics.Lock(r => {
if (hasPIField)
{
++r.ModeSWithPIField;
}
if (isPIWithBadParity)
{
++r.ModeSWithBadParityPIField;
++r.ModeSDFStatistics[(int)modeSMessage.DownlinkFormat].BadParityPI;
}
if (adsbMessage == null)
{
++r.ModeSNotAdsbCount;
}
});
}
if (adsbMessage != null && modeSMessage.DownlinkFormat == DownlinkFormat.ExtendedSquitterNonTransponder)
{
if (adsbMessage.TisbIcaoModeAFlag == 0)
{
switch (modeSMessage.ControlField)
{
case ControlField.CoarseFormatTisb:
case ControlField.FineFormatTisb:
modeSMessage.Icao24 = modeSMessage.NonIcao24Address.GetValueOrDefault();
modeSMessage.NonIcao24Address = null;
break;
}
}
}
++TotalMessages;
_MessageProcessingAndDispatchQueue.Enqueue(new MessageDispatch()
{
ModeSMessageEventArgs = new ModeSMessageEventArgs(now, modeSMessage, adsbMessage)
});
}
} catch (Exception) {
++TotalBadMessages;
if (!IgnoreBadMessages)
{
throw;
}
}
}
}
public void ModeSTranslator_Translate_Decodes_Packets_Correctly()
{
for (var conversionMethod = 0; conversionMethod < 2; ++conversionMethod)
{
var worksheet = new ExcelWorksheetData(TestContext);
var expectedValue = new SpreadsheetFieldValue(worksheet, 7);
var bits = worksheet.String("Packet");
var bytes = TestUtilities.ConvertBitStringToBytes(bits);
var reply = conversionMethod == 0 ? _Translator.Translate(bytes.ToArray()) : _Translator.Translate(bytes.ToArray(), 0);
foreach (var replyProperty in reply.GetType().GetProperties())
{
switch (replyProperty.Name)
{
case "ACASMessage": Assert.IsTrue(TestUtilities.SequenceEqual(expectedValue.GetBytes("MV"), reply.ACASMessage)); break;
case "Altitude": Assert.AreEqual(expectedValue.GetNInt("AC"), reply.Altitude); break;
case "AltitudeIsMetric": Assert.AreEqual(expectedValue.GetNBool("AC:M"), reply.AltitudeIsMetric); break;
case "ApplicationField": Assert.AreEqual(expectedValue.GetEnum <ApplicationField>("AF"), reply.ApplicationField); break;
case "Capability": Assert.AreEqual(expectedValue.GetEnum <Capability>("CA"), reply.Capability); break;
case "CommBMessage": Assert.IsTrue(TestUtilities.SequenceEqual(expectedValue.GetBytes("MB"), reply.CommBMessage)); break;
case "CommDMessage": Assert.IsTrue(TestUtilities.SequenceEqual(expectedValue.GetBytes("MD"), reply.CommDMessage)); break;
case "ControlField": Assert.AreEqual(expectedValue.GetEnum <ControlField>("CF"), reply.ControlField); break;
case "CrossLinkCapability": Assert.AreEqual(expectedValue.GetNBool("CC"), reply.CrossLinkCapability); break;
case "DownlinkFormat": Assert.AreEqual(worksheet.ParseEnum <DownlinkFormat>("DownlinkFormat"), reply.DownlinkFormat); break;
case "DownlinkRequest": Assert.AreEqual(expectedValue.GetNByte("DR", true), reply.DownlinkRequest); break;
case "DSegmentNumber": Assert.AreEqual(expectedValue.GetNByte("ND", true), reply.DSegmentNumber); break;
case "ElmControl": Assert.AreEqual(expectedValue.GetEnum <ElmControl>("KE"), reply.ElmControl); break;
case "ExtendedSquitterMessage": Assert.IsTrue(TestUtilities.SequenceEqual(expectedValue.GetBytes("ME"), reply.ExtendedSquitterMessage)); break;
case "ExtendedSquitterSupplementaryMessage": Assert.IsTrue(TestUtilities.SequenceEqual(expectedValue.GetBytes("MEX"), reply.ExtendedSquitterSupplementaryMessage)); break;
case "FlightStatus": Assert.AreEqual(expectedValue.GetEnum <FlightStatus>("FS"), reply.FlightStatus); break;
case "FormattedIcao24": Assert.AreEqual(worksheet.String("Icao24"), reply.FormattedIcao24); break;
case "Icao24": Assert.AreEqual(Convert.ToInt32(worksheet.String("Icao24"), 16), reply.Icao24); break;
case "Identity": Assert.AreEqual(expectedValue.GetNShort("ID"), reply.Identity); break;
case "NonIcao24Address": Assert.AreEqual(expectedValue.GetNInt("AAX", true), reply.NonIcao24Address); break;
case "ParityInterrogatorIdentifier": Assert.AreEqual(expectedValue.GetNInt("PI", true), reply.ParityInterrogatorIdentifier); break;
case "PossibleCallsign": Assert.AreEqual(expectedValue.GetString("PC"), reply.PossibleCallsign); break;
case "ReplyInformation": Assert.AreEqual(expectedValue.GetNByte("RI", true), reply.ReplyInformation); break;
case "SensitivityLevel": Assert.AreEqual(expectedValue.GetNByte("SL", true), reply.SensitivityLevel); break;
case "UtilityMessage": Assert.AreEqual(expectedValue.GetNByte("UM", true), reply.UtilityMessage); break;
case "VerticalStatus": Assert.AreEqual(expectedValue.GetEnum <VerticalStatus>("VS"), reply.VerticalStatus); break;
default: throw new NotImplementedException();
}
}
}
}