private void ProgramService_OnPartialTextReceived(RdsClient ctx, char[] buffer, int offset)
{
Invoke((MethodInvoker) delegate
{
rdsPs.Text = new string(buffer);
});
}
private void PiCode_OnPiCodeChanged(RdsClient ctx, ushort pi)
{
Invoke((MethodInvoker) delegate
{
rdsPi.Text = pi.ToString("X");
});
}
private void ProgramType_OnCategoryChanged(RdsClient ctx, byte category)
{
Invoke((MethodInvoker) delegate
{
rdsCategory.Text = category + " : " + ctx.ProgramType.CategoryAmerica.ToString();
});
}
private void RadioText_OnPartialTextReceived(RdsClient ctx, char[] buffer, int offset)
{
Invoke((MethodInvoker) delegate
{
rdsRt.Text = new string(buffer);
});
}
private void Form1_Load(object sender, EventArgs e)
{
//Add all entries to the pie graph to start off with
for (int i = 0; i < 32; i++)
{
rdsGroupChart.Series["Groups"].Points.AddXY("", 0);
rdsGroupChart.Series["Groups"].Points[i].IsVisibleInLegend = false;
}
//Configure table
rdsHistory.Columns.Add(GenerateColumn("PI", 40));
rdsHistory.Columns.Add(GenerateColumn("Group", 50));
rdsHistory.Columns.Add(GenerateColumn("Description", -1));
//Create buffers
iqBuffer = UnsafeBuffer.Create(BUFFER_SIZE, out iqBufferPtr);
audioBuffer = UnsafeBuffer.Create(BUFFER_SIZE, out audioBufferPtr);
//Open USB device
usb = new LibUSBProvider();
device = AirSpyDevice.OpenDevice(usb);
//Configure radio
device.SetLinearGain(gain.Value / 100f);
device.CenterFrequency = (long)(freq.Value * 1000000);
device.SampleRate = 3000000;
device.StartRx();
//Create filter
var filterBuilder = new LowPassFilterBuilder(device.SampleRate, BANDWIDTH / 2)
.SetAutomaticTapCount(BANDWIDTH * 0.1f, 50)
.SetWindow();
filter = ComplexFirFilter.CreateFirFilter(filterBuilder, filterBuilder.GetDecimation(out float decimatedSampleRate));
//Create FM and RDS
fm = new WbFmDemodulator();
fm.Configure(BUFFER_SIZE, decimatedSampleRate, 48000);
fm.OnStereoDetected += Fm_OnStereoDetected;
fm.OnRdsDetected += Fm_OnRdsDetected;
rds = new RdsClient();
fm.OnRdsFrameEmitted += (ulong frame) => rds.ProcessFrame(frame);
//Bind RDS client commands
rds.ProgramService.OnPartialTextReceived += ProgramService_OnPartialTextReceived;
rds.PiCode.OnPiCodeChanged += PiCode_OnPiCodeChanged;
rds.ProgramType.OnCategoryChanged += ProgramType_OnCategoryChanged;
rds.RadioText.OnPartialTextReceived += RadioText_OnPartialTextReceived;
rds.OnCommand += Rds_OnCommand;
//Create worker thread
worker = new Thread(WorkerThread);
worker.IsBackground = true;
worker.Start();
}
private int[] groupChartValues = new int[32]; //32 = 2^5
private void Rds_OnCommand(RdsClient client, RdsCommand command)
{
//Configure pie graph
int groupId = (command.GroupType << 1) | (command.GroupVersionB ? 1 : 0);
//Update internal count
groupChartValues[groupId]++;
//Update UI
Invoke((MethodInvoker) delegate
{
//Update graph
rdsGroupChart.Series["Groups"].Points[groupId].SetValueXY(command.GroupName + " (" + groupChartValues[groupId] + ")", groupChartValues[groupId]);
rdsGroupChart.Series["Groups"].Points[groupId].IsVisibleInLegend = true;
rdsGroupChart.Invalidate();
//Update table
if (!historyPause.Checked)
{
rdsHistory.Rows.Insert(0, command.PiCode.ToString("X"), command.GroupName, command.DescribeCommand());
}
});
}
