public void Stop()
{
if (_worker == null)
{
return;
}
LibraryWrapper.rtlsdr_cancel_async(_dev);
_worker.Join(100);
_worker = null;
}
public void Dispose()
{
Stop();
LibraryWrapper.rtlsdr_close(_dev);
if (_gcHandle.IsAllocated)
{
_gcHandle.Free();
}
_dev = IntPtr.Zero;
GC.SuppressFinalize(this);
}
public static DeviceDisplay[] GetActiveDevices()
{
uint count = LibraryWrapper.rtlsdr_get_device_count();
var result = new DeviceDisplay[count];
for (var i = 0u; i < count; i++)
{
string name = LibraryWrapper.rtlsdr_get_device_name(i);
result[i] = new DeviceDisplay {
Index = i, Name = name
};
}
return(result);
}
public void Start()
{
if (_worker != null)
{
throw new ApplicationException("Already running");
}
int r = LibraryWrapper.rtlsdr_set_center_freq(_dev, _centerFrequency);
if (r != 0)
{
throw new ApplicationException("Cannot access RTL device");
}
r = LibraryWrapper.rtlsdr_set_tuner_gain_mode(_dev, _useTunerAgc ? 0 : 1);
if (r != 0)
{
throw new ApplicationException("Cannot access RTL device");
}
if (!_useTunerAgc)
{
r = LibraryWrapper.rtlsdr_set_tuner_gain(_dev, _tunerGain);
if (r != 0)
{
throw new ApplicationException("Cannot access RTL device");
}
}
r = LibraryWrapper.rtlsdr_reset_buffer(_dev);
if (r != 0)
{
throw new ApplicationException("Cannot access RTL device");
}
_worker = new Thread(StreamProc)
{
Priority = ThreadPriority.Highest
};
_worker.Start();
}
public RtlDevice(uint index)
{
Index = index;
int r = LibraryWrapper.rtlsdr_open(out _dev, Index);
if (r != 0)
{
throw new ApplicationException("Cannot open RTL device. Is the device locked somewhere?");
}
int count = _dev == IntPtr.Zero ? 0 : LibraryWrapper.rtlsdr_get_tuner_gains(_dev, null);
if (count < 0)
{
count = 0;
}
SupportsOffsetTuning = LibraryWrapper.rtlsdr_set_offset_tuning(_dev, 0) != -2;
SupportedGains = new int[count];
if (count >= 0)
{
LibraryWrapper.rtlsdr_get_tuner_gains(_dev, SupportedGains);
}
Name = LibraryWrapper.rtlsdr_get_device_name(Index);
_gcHandle = GCHandle.Alloc(this);
}
