SoapySDR::RangeList SoapySDR::Device::getFrequencyRange(const int dir, const size_t chan) const
{
//get a list of tunable components
const std::vector<std::string> comps = this->listFrequencies(dir, chan);
if (comps.empty()) return SoapySDR::RangeList();
//get the range list for the RF component
SoapySDR::RangeList ranges = this->getFrequencyRange(dir, chan, comps.front());
//use bandwidth setting to clip the range
const double bw = this->getBandwidth(dir, chan);
//add to the range list given subsequent components
for (size_t comp_i = 1; comp_i < comps.size(); comp_i++)
{
SoapySDR::RangeList subRange = this->getFrequencyRange(dir, chan, comps[comp_i]);
if (subRange.empty()) continue;
double subRangeLow = subRange.front().minimum();
if (bw > 0.0) subRangeLow = std::max(-bw/2, subRangeLow);
double subRangeHigh = subRange.back().maximum();
if (bw > 0.0) subRangeHigh = std::min(bw/2, subRangeHigh);
for (size_t range_i = 0; range_i < ranges.size(); range_i++)
{
SoapySDR::Range &range = ranges[range_i];
range = SoapySDR::Range(
range.minimum() + subRangeLow,
range.maximum() + subRangeHigh);
}
}
return ranges;
}
SoapySDR::ArgInfoList SoapySDR::Device::getFrequencyArgsInfo(const int dir, const size_t chan) const
{
SoapySDR::ArgInfoList args;
const std::vector<std::string> comps = this->listFrequencies(dir, chan);
if (comps.size() < 2) return args; //no tuning options with single components
//support offset tuning
{
SoapySDR::ArgInfo info;
info.key = "OFFSET";
info.name = "LO Offset";
info.value = "0.0";
info.units = "Hz";
info.type = SoapySDR::ArgInfo::FLOAT;
info.description = "Tune the LO with an offset and compensate with the baseband CORDIC.";
SoapySDR::RangeList ranges = this->getFrequencyRange(dir, chan, comps.at(1));
if (not ranges.empty()) info.range = ranges.front();
args.push_back(info);
}
//every tunable component becomes an option
for (size_t comp_i = 1; comp_i < comps.size(); comp_i++)
{
SoapySDR::ArgInfo info;
info.key = comps[comp_i];
info.value = "DEFAULT";
info.units = "Hz";
info.type = SoapySDR::ArgInfo::FLOAT;
info.description = "Specify a specific value for this component or IGNORE to skip tuning it.";
info.options.push_back("DEFAULT");
info.optionNames.push_back("Default");
info.options.push_back("IGNORE");
info.optionNames.push_back("Ingore");
SoapySDR::RangeList ranges = this->getFrequencyRange(dir, chan, comps.at(comp_i));
if (not ranges.empty()) info.range = ranges.front();
args.push_back(info);
}
return args;
}