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Adding Over-the-Wire sample format config option for the UHD source

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This commit is contained in:
Javier Arribas 2022-05-17 14:53:25 +02:00
parent 0dbecdaa80
commit 9ef62fadb8
2 changed files with 35 additions and 4 deletions
src/algorithms/signal_source/adapters
uhd_signal_source.ccuhd_signal_source.h

32
src/algorithms/signal_source/adapters/uhd_signal_source.cc

@ -60,6 +60,7 @@ UhdSignalSource::UhdSignalSource(const ConfigurationInterface* configuration,
}
subdevice_ = configuration->property(role + ".subdevice", empty);
clock_source_ = configuration->property(role + ".clock_source", std::string("internal"));
otw_format_ = configuration->property(role + ".otw_format", std::string("sc16"));
RF_channels_ = configuration->property(role + ".RF_channels", 1);
sample_rate_ = configuration->property(role + ".sampling_frequency", 4.0e6);
item_type_ = configuration->property(role + ".item_type", default_item_type);
@ -128,26 +129,49 @@ UhdSignalSource::UhdSignalSource(const ConfigurationInterface* configuration,
// fc32: Complex floating point (32-bit floats) range [-1.0, +1.0].
// sc16: Complex signed integer (16-bit integers) range [-32768, +32767].
// sc8: Complex signed integer (8-bit integers) range [-128, 127].
//! Convenience constructor for streamer args
// stream_args_t(const std::string& cpu = "", const std::string& otw = "")
// {
// cpu_format = cpu;
// otw_format = otw;
// }
//
//
// * The CPU format is a string that describes the format of host memory.
// * Conversions for the following CPU formats have been implemented:
// * - fc64 - complex<double>
// * - fc32 - complex<float>
// * - sc16 - complex<int16_t>
// * - sc8 - complex<int8_t>
// *
// * The following are not implemented, but are listed to demonstrate naming convention:
// * - f32 - float
// * - f64 - double
// * - s16 - int16_t
// * - s8 - int8_t
// *
// * The CPU format can be chosen depending on what the application requires.
if (item_type_ == "cbyte")
{
item_size_ = sizeof(lv_8sc_t);
uhd_stream_args_ = uhd::stream_args_t("sc8");
uhd_stream_args_ = uhd::stream_args_t("sc8", otw_format_);
}
else if (item_type_ == "cshort")
{
item_size_ = sizeof(lv_16sc_t);
uhd_stream_args_ = uhd::stream_args_t("sc16");
uhd_stream_args_ = uhd::stream_args_t("sc16", otw_format_);
}
else if (item_type_ == "gr_complex")
{
item_size_ = sizeof(gr_complex);
uhd_stream_args_ = uhd::stream_args_t("fc32");
uhd_stream_args_ = uhd::stream_args_t("fc32", otw_format_);
}
else
{
LOG(WARNING) << item_type_ << " unrecognized item type. Using cshort.";
item_size_ = sizeof(lv_16sc_t);
uhd_stream_args_ = uhd::stream_args_t("sc16");
uhd_stream_args_ = uhd::stream_args_t("sc16", otw_format_);
}
// select the number of channels and the subdevice specifications

7
src/algorithms/signal_source/adapters/uhd_signal_source.h

@ -77,6 +77,13 @@ private:
std::string subdevice_;
std::string clock_source_;
// * The OTW format is a string that describes the format over-the-wire.
// * The following over-the-wire formats have been implemented:
// * - sc16 - Q16 I16
// * - sc8 - Q8_1 I8_1 Q8_0 I8_0
// * - sc12 (Only some devices)
std::string otw_format_;
double sample_rate_;
size_t item_size_;
int RF_channels_;