Method updateSettings

src/sdr/SoapySDRThread.cpp:450–611

}

void SDRThread::updateSettings() {
    bool doUpdate = false;
    
    if (!stream) {
        return;
    }

    if (antenna_changed.load()) {
        
       device->setAntenna(SOAPY_SDR_RX, 0, antennaName);
           
       antenna_changed.store(false);
    }
    
    if (offset_changed.load()) {
        if (!freq_changed.load()) {
            frequency.store(frequency.load());
            freq_changed.store(true);
        }
        offset_changed.store(false);
    }
    
    if (rate_changed.load()) {

        //1. Silence the device:
        device->deactivateStream(stream);

        //2. Set the (new) sample rate
        try {
            device->setSampleRate(SOAPY_SDR_RX, 0, sampleRate.load());
        }
        catch (...) {
            std::cout << "SDRThread: Exception while setting the sample rate = " << sampleRate.load() << std::endl << std::flush;
        }

        //2.3 Device-specific workarounds:
        // TODO: explore bandwidth setting option to see if this is necessary for others
        if (device->getDriverKey() == "bladeRF") {
            device->setBandwidth(SOAPY_SDR_RX, 0, sampleRate.load());
        }

        //3. Re-activate stream:
        device->activateStream(stream);

        //4. Re-do Cubic buffers :
        //4.1. re-read current sample rate and MTU:
        //4.2. The device MAY force another sample rate than the one requested, or refusing the change altogether,
        // because of limitations of hardware and the SoapySDR river
        double requested_sample_rate = (double)sampleRate.load();
        double applied_sample_rate = device->getSampleRate(SOAPY_SDR_RX, 0);

        if (abs((requested_sample_rate - applied_sample_rate) / requested_sample_rate) > 0.05) {
            //force the applied_sample_rate as the new effective user setting
            DeviceConfig* devConfig = deviceConfig.load();
            if (devConfig) {
                devConfig->setSampleRate(applied_sample_rate);
            }