private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
TestRunnerArguments testRunnerArguments = null;
try
{
testRunnerArguments = ArgumentProcessor.ProcessArguments(
new FormInput
{
SpaceFrequency = spaceFrequency.Text,
MarkFrequency = markFrequency.Text,
Tolerance = tolerance.Text,
BaudStart = baudStart.Text,
BaudIncrement = baudIncrement.Text,
BaudEnd = baudEnd.Text,
BoostStart = boostStart.Text,
BoostIncrement = boostIncrement.Text,
BoostEnd = boostEnd.Text,
WriteWavFiles = writeWavFiles.Checked,
PlayAudio = playAudio.Checked,
TestString = testString.Text
}
);
}
catch (ArgumentException ex)
{
MessageBox.Show(ex.Message, "Input validation");
return;
}
var testRunner = new TestRunner();
testRunner.FskAnalyzer.AnalysisCompleted += AnalysisCompletedHandler;
testRunner.SignalGenerationCompleted += SignalGenerationCompletedHandler;
testRunner.Run(testRunnerArguments);
}
public void Run(TestRunnerArguments arguments)
{
var fileTimestamp = DateTime.Now.ToString("yyyyMMdd_HHmmss");
var bitManipulator = new BitManipulator();
var bits = bitManipulator.StringToBits(arguments.TestString);
for (var baudRate = arguments.BaudStart; baudRate <= arguments.BaudEnd; baudRate += arguments.BaudIncrement)
{
for (var loopBoostFrequency = arguments.BoostStart; loopBoostFrequency <= arguments.BoostEnd;
loopBoostFrequency += arguments.BoostIncrement)
{
_binaryFskAnalyzerSettings = new Bell103BinaryFskAnalyzerSettings
{
SpaceFrequency = arguments.SpaceFrequency,
MarkFrequency = arguments.MarkFrequency,
BaudRate = baudRate,
FrequencyDeviationTolerance = arguments.Tolerance
};
_audioStream = new MemoryStream();
_audioGenerator = new AudioGenerator(_audioStream);
_fskAudioGenerator = new FskAudioGenerator(_audioGenerator);
_fskAudioGenerator.GenerateAudio(_binaryFskAnalyzerSettings.BaudRate,
_binaryFskAnalyzerSettings.SpaceFrequency, _binaryFskAnalyzerSettings.MarkFrequency, bits);
var audioLengthInMicroseconds = (int)(bits.Count * Math.Pow(10, 6) / _binaryFskAnalyzerSettings.BaudRate);
_audioStream = new MemoryStream();
_audioGenerator = new AudioGenerator(_audioStream);
_fskAudioGenerator = new FskAudioGenerator(_audioGenerator);
var samples = _fskAudioGenerator.GenerateAudio(_binaryFskAnalyzerSettings.BaudRate,
_binaryFskAnalyzerSettings.SpaceFrequency, _binaryFskAnalyzerSettings.MarkFrequency, bits);
SignalGenerationComplete(bits.Count, audioLengthInMicroseconds, samples, _audioAnalyzer.SampleRate);
if (arguments.WriteFaveFiles == true)
{
using (var file = File.Create($"{fileTimestamp}_{baudRate}_baud.wav"))
{
var previousPosition = _audioStream.Position;
_audioStream.Position = 0;
_audioStream.CopyTo(file);
_audioStream.Position = previousPosition;
}
}
_binaryFskAnalyzerSettings = new Bell103BinaryFskAnalyzerSettings
{
SpaceFrequency = (int)(arguments.SpaceFrequency + loopBoostFrequency),
MarkFrequency = (int)(arguments.MarkFrequency + loopBoostFrequency),
BaudRate = baudRate,
FrequencyDeviationTolerance = arguments.Tolerance
};
_audioAnalyzer = new AudioAnalyzer(_audioStream, _audioGenerator, (int)loopBoostFrequency);
FskAnalyzer.Initialize(_audioAnalyzer, new ZeroCrossingsFrequencyDetector(), _binaryFskAnalyzerSettings);
FskAnalyzer.AnalyzeSignal(arguments.TestString);
if (arguments.PlayAudio == true)
{
AudioAnalyzer.Play(_audioStream, (int)Math.Ceiling((audioLengthInMicroseconds / Math.Pow(10, 3))));
}
}
}
}