public void SetSampleRate(uint sampleRate)
{
if (RtlSdrWrapper.rtlsdr_set_sample_rate(device, sampleRate) != 0)
{
throw new Exception("Unable to set samplerate");
}
}
public void SetFrequency(uint frequencyInHz)
{
if (RtlSdrWrapper.rtlsdr_set_center_freq(device, frequencyInHz) != 0)
{
throw new Exception("Unable to set frequency");
}
}
public void CloseDevice()
{
if (RtlSdrWrapper.rtlsdr_close(device) != 0)
{
throw new Exception("Unable to close device");
}
}
private bool disposedValue = false; // To detect redundant calls
protected virtual void Dispose(bool disposing)
{
if (!disposedValue)
{
if (disposing)
{
// TODO: dispose managed state (managed objects).
}
RtlSdrWrapper.rtlsdr_close(device);
// TODO: free unmanaged resources (unmanaged objects) and override a finalizer below.
// TODO: set large fields to null.
disposedValue = true;
}
}
public static IReadOnlyCollection <SDRDeviceDescription> GetConnectedDevices()
{
var deviceCount = RtlSdrWrapper.rtlsdr_get_device_count();
List <SDRDeviceDescription> devices = new List <SDRDeviceDescription>((int)deviceCount);
for (uint devIndex = 0; devIndex < deviceCount; devIndex++)
{
StringBuilder manufact = new StringBuilder(256);
StringBuilder product = new StringBuilder(256);
StringBuilder serial = new StringBuilder(256);
RtlSdrWrapper.rtlsdr_get_device_usb_strings(devIndex, manufact, product, serial);
string usbStrings;
usbStrings = string.Format("{0}, {1}, SN: {2}", manufact, product, serial);
devices.Add(new SDRDeviceDescription(RtlSdrWrapper.rtlsdr_get_device_name(devIndex), devIndex, usbStrings));
}
return(devices.AsReadOnly());
}
private unsafe byte[] ReadSamplesSyncInternal(int bufferSize)
{
byte[] buffer = new byte[bufferSize];
fixed(byte *p = buffer)
{
IntPtr ptr = (IntPtr)p;
int nRead = 0;
RtlSdrWrapper.rtlsdr_read_sync(device, ptr, bufferSize, out nRead);
if (nRead != bufferSize)
{
throw new Exception("rtlsdr_read_sync");
}
}
return(buffer);
}
public void OpenDevice(uint deviceIndex = 0)
{
if (RtlSdrWrapper.rtlsdr_open(out device, deviceIndex) != 0)
{
throw new Exception("Unable to open device");
}
if (RtlSdrWrapper.rtlsdr_set_center_freq(device, DefaultFrequency) != 0)
{
throw new Exception("Unable to set default frequency");
}
if (RtlSdrWrapper.rtlsdr_set_sample_rate(device, DefaultSamplerate) != 0)
{
throw new Exception("Unable to set default samplerate");
}
if (RtlSdrWrapper.rtlsdr_set_tuner_gain_mode(device, 0) != 0)
{
throw new Exception("Unable to set auto gain mode");
}
if (RtlSdrWrapper.rtlsdr_reset_buffer(device) != 0)
{
throw new Exception("Unable to reset buffer");
}
}
