private void BackgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
if (e.UserState is AnalysisResultEventArgs)
{
_analysisResult = (AnalysisResultEventArgs)e.UserState;
UpdateScope();
UpdateAnalysisResults();
UpdateMatchIndicator();
}
if (e.UserState is SignalGenerationResultEventArgs)
{
var signalGenerationResult = (SignalGenerationResultEventArgs)e.UserState;
UpdateSignalGenerationInformation(signalGenerationResult);
}
}
private void AnalysisCompletedHandler(object sender, AnalysisResultEventArgs e)
{
backgroundWorker1.ReportProgress(0, e);
}
public void DrawScope(float[] samples, AnalysisResultEventArgs analysisResult, int sampleRate, int baudRate, int numberOfSymbols, int desiredSamplesPerSymbol = 100)
{
var samplesPerSymbol = sampleRate / baudRate;
// Debug.WriteLine($"[ScopeControl] Samples per symbol: {samplesPerSymbol}, desired samples per symbol: {desiredSamplesPerSymbol}");
var imageWidth = (int)(desiredSamplesPerSymbol * numberOfSymbols);
var imageHeight = (int)Math.Floor(_pictureBoxOriginalHeight * _imageHeightFactor);
var audioScaler = (IAudioScaler) new AudioScaler();
samples = audioScaler.Scale(samples, sampleRate, baudRate, numberOfSymbols, imageWidth, imageHeight);
var image = new Bitmap(imageWidth, imageHeight);
using (Graphics g = Graphics.FromImage(image))
{
g.Clear(Color.Black);
g.DrawLine(new Pen(Color.LightGreen), new Point(0, imageHeight / 2), new Point(imageWidth, imageHeight / 2));
var greenPen = new Pen(Color.Green);
var yellowPen = new Pen(Color.Yellow);
var sampleFramePositions = new List <int>();
for (var n = 1; n < numberOfSymbols; n++)
{
sampleFramePositions.Add((int)(n * audioScaler.SamplesPerSymbol));
}
for (int x = 0; x < imageWidth - 1; x++)
{
g.DrawLine(greenPen, new Point(x, (int)samples[x]), new Point(x + 1, (int)samples[x + 1]));
if (sampleFramePositions.Contains(x))
{
// Debug.WriteLine($"[ScopeControl] Drawing symbol frame at {x} ({imageWidth - 1})");
g.DrawLine(yellowPen, new Point(x, 0), new Point(x, imageHeight));
}
}
var textBrush = new SolidBrush(Color.White);
var mediumFont = new Font("Arial", 10);
var smallFont = new Font("Arial", 8);
if (analysisResult != null && analysisResult.AnalysisResult != null && analysisResult.AnalysisResult.AnalysisFrames != null)
{
var analysisFrames = new AnalysisFrame[analysisResult.AnalysisResult.AnalysisFrames.Count];
analysisResult.AnalysisResult.AnalysisFrames.CopyTo(analysisFrames, 0);
var frame = 0;
for (int x = 0; x < imageWidth - 1; x++)
{
if (x == 0 || sampleFramePositions.Contains(x))
{
var frequency = analysisFrames[frame].Frequency;
var frequencyDifference = analysisFrames[frame].DifferenceFromExpectedFrequencies;
var symbol = analysisFrames[frame].Bit.HasValue ? (analysisFrames[frame].Bit.Value == true ? "1" : "0") : "-";
var currentTimeMicroseconds = analysisFrames[frame].TimeOffsetMicroseconds;
var line1 = $"{frequency} Hz";
var line2 = $"({frequencyDifference} Hz dev)";
var line3 = $"@ {currentTimeMicroseconds:N1} μs";
var line4 = $"{symbol}";
g.DrawString(line1, mediumFont, textBrush, new PointF(x + 2, imageHeight - 65));
g.DrawString(line2, smallFont, textBrush, new PointF(x + 2, imageHeight - 50));
g.DrawString(line3, mediumFont, textBrush, new PointF(x + 2, imageHeight - 35));
g.DrawString(line4, mediumFont, textBrush, new PointF(x + 2, imageHeight - 18));
frame++;
}
}
}
}
scopePictureBox.Image = image;
scopePictureBox.Refresh();
}
