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Improving freq xlating fir filter adapter configuration

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This commit is contained in:
Javier Arribas 2018-08-02 12:46:08 +02:00
parent 06015f82b3
commit f9573987a2
2 changed files with 85 additions and 91 deletions
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174
src/algorithms/input_filter/adapters/freq_xlating_fir_filter.cc
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@ -43,38 +43,112 @@ using google::LogMessage;
FreqXlatingFirFilter::FreqXlatingFirFilter(ConfigurationInterface* configuration, std::string role,
unsigned int in_streams, unsigned int out_streams) : config_(configuration), role_(role), in_streams_(in_streams), out_streams_(out_streams)
{
size_t item_size;
(*this).init();
int decimation_factor;
std::string default_input_item_type = "gr_complex";
std::string default_output_item_type = "gr_complex";
std::string default_taps_item_type = "float";
std::string default_dump_filename = "../data/input_filter.dat";
double default_intermediate_freq = 0.0;
double default_sampling_freq = 4000000.0;
int default_number_of_taps = 6;
unsigned int default_number_of_bands = 2;
std::vector<double> default_bands = {0.0, 0.4, 0.6, 1.0};
std::vector<double> default_ampl = {1.0, 1.0, 0.0, 0.0};
std::vector<double> default_error_w = {1.0, 1.0};
std::string default_filter_type = "bandpass";
int default_grid_density = 16;
int default_decimation_factor = 1;
decimation_factor = config_->property(role_ + ".decimation_factor", default_decimation_factor);
DLOG(INFO) << "role " << role_;
input_item_type_ = config_->property(role_ + ".input_item_type", default_input_item_type);
output_item_type_ = config_->property(role_ + ".output_item_type", default_output_item_type);
taps_item_type_ = config_->property(role_ + ".taps_item_type", default_taps_item_type);
dump_ = config_->property(role_ + ".dump", false);
dump_filename_ = config_->property(role_ + ".dump_filename", default_dump_filename);
intermediate_freq_ = config_->property(role_ + ".IF", default_intermediate_freq);
sampling_freq_ = config_->property(role_ + ".sampling_frequency", default_sampling_freq);
int number_of_taps = config_->property(role_ + ".number_of_taps", default_number_of_taps);
unsigned int number_of_bands = config_->property(role_ + ".number_of_bands", default_number_of_bands);
std::string filter_type = config_->property(role_ + ".filter_type", default_filter_type);
decimation_factor_ = config_->property(role_ + ".decimation_factor", default_decimation_factor);
if (filter_type.compare("lowpass") != 0)
{
std::vector<double> taps_d;
std::vector<double> bands;
std::vector<double> ampl;
std::vector<double> error_w;
std::string option;
double option_value;
for (unsigned int i = 0; i < number_of_bands; i++)
{
option = ".band" + boost::lexical_cast<std::string>(i + 1) + "_begin";
option_value = config_->property(role_ + option, default_bands[i]);
bands.push_back(option_value);
option = ".band" + boost::lexical_cast<std::string>(i + 1) + "_end";
option_value = config_->property(role_ + option, default_bands[i]);
bands.push_back(option_value);
option = ".ampl" + boost::lexical_cast<std::string>(i + 1) + "_begin";
option_value = config_->property(role_ + option, default_bands[i]);
ampl.push_back(option_value);
option = ".ampl" + boost::lexical_cast<std::string>(i + 1) + "_end";
option_value = config_->property(role_ + option, default_bands[i]);
ampl.push_back(option_value);
option = ".band" + boost::lexical_cast<std::string>(i + 1) + "_error";
option_value = config_->property(role_ + option, default_bands[i]);
error_w.push_back(option_value);
}
int grid_density = config_->property(role_ + ".grid_density", default_grid_density);
taps_d = gr::filter::pm_remez(number_of_taps - 1, bands, ampl, error_w, filter_type, grid_density);
taps_.reserve(taps_d.size());
for (std::vector<double>::iterator it = taps_d.begin(); it != taps_d.end(); it++)
{
taps_.push_back(static_cast<float>(*it));
}
}
else
{
double default_bw = (sampling_freq_ / decimation_factor_) / 2;
double bw_ = config_->property(role_ + ".bw", default_bw);
double default_tw = bw_ / 10.0;
double tw_ = config_->property(role_ + ".tw", default_tw);
taps_ = gr::filter::firdes::low_pass(1.0, sampling_freq_, bw_, tw_);
}
size_t item_size;
if ((taps_item_type_.compare("float") == 0) && (input_item_type_.compare("gr_complex") == 0) && (output_item_type_.compare("gr_complex") == 0))
{
item_size = sizeof(gr_complex); //output
input_size_ = sizeof(gr_complex); //input
freq_xlating_fir_filter_ccf_ = gr::filter::freq_xlating_fir_filter_ccf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
freq_xlating_fir_filter_ccf_ = gr::filter::freq_xlating_fir_filter_ccf::make(decimation_factor_, taps_, intermediate_freq_, sampling_freq_);
DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_ccf_->unique_id() << ")";
}
else if ((taps_item_type_.compare("float") == 0) && (input_item_type_.compare("float") == 0) && (output_item_type_.compare("gr_complex") == 0))
{
item_size = sizeof(gr_complex);
input_size_ = sizeof(float); //input
freq_xlating_fir_filter_fcf_ = gr::filter::freq_xlating_fir_filter_fcf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
freq_xlating_fir_filter_fcf_ = gr::filter::freq_xlating_fir_filter_fcf::make(decimation_factor_, taps_, intermediate_freq_, sampling_freq_);
DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_fcf_->unique_id() << ")";
}
else if ((taps_item_type_.compare("float") == 0) && (input_item_type_.compare("short") == 0) && (output_item_type_.compare("gr_complex") == 0))
{
item_size = sizeof(gr_complex);
input_size_ = sizeof(int16_t); //input
freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor_, taps_, intermediate_freq_, sampling_freq_);
DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_scf_->unique_id() << ")";
}
else if ((taps_item_type_.compare("float") == 0) && (input_item_type_.compare("short") == 0) && (output_item_type_.compare("cshort") == 0))
{
item_size = sizeof(lv_16sc_t);
input_size_ = sizeof(int16_t); //input
freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor_, taps_, intermediate_freq_, sampling_freq_);
DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_scf_->unique_id() << ")";
complex_to_float_ = gr::blocks::complex_to_float::make();
float_to_short_1_ = gr::blocks::float_to_short::make();
@ -86,7 +160,7 @@ FreqXlatingFirFilter::FreqXlatingFirFilter(ConfigurationInterface* configuration
item_size = sizeof(gr_complex);
input_size_ = sizeof(int8_t); //input
gr_char_to_short_ = gr::blocks::char_to_short::make();
freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor_, taps_, intermediate_freq_, sampling_freq_);
DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_scf_->unique_id() << ")";
}
else if ((taps_item_type_.compare("float") == 0) && (input_item_type_.compare("byte") == 0) && (output_item_type_.compare("cbyte") == 0))
@ -94,7 +168,7 @@ FreqXlatingFirFilter::FreqXlatingFirFilter(ConfigurationInterface* configuration
item_size = sizeof(lv_8sc_t);
input_size_ = sizeof(int8_t); //input
gr_char_to_short_ = gr::blocks::char_to_short::make();
freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor_, taps_, intermediate_freq_, sampling_freq_);
DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_scf_->unique_id() << ")";
complex_to_complex_byte_ = make_complex_float_to_complex_byte();
}
@ -311,83 +385,3 @@ gr::basic_block_sptr FreqXlatingFirFilter::get_right_block()
LOG(ERROR) << " Unknown input filter input/output item type conversion";
}
}
void FreqXlatingFirFilter::init()
{
std::string default_input_item_type = "gr_complex";
std::string default_output_item_type = "gr_complex";
std::string default_taps_item_type = "float";
std::string default_dump_filename = "../data/input_filter.dat";
double default_intermediate_freq = 0.0;
double default_sampling_freq = 4000000.0;
int default_number_of_taps = 6;
unsigned int default_number_of_bands = 2;
std::vector<double> default_bands = {0.0, 0.4, 0.6, 1.0};
std::vector<double> default_ampl = {1.0, 1.0, 0.0, 0.0};
std::vector<double> default_error_w = {1.0, 1.0};
std::string default_filter_type = "bandpass";
int default_grid_density = 16;
DLOG(INFO) << "role " << role_;
input_item_type_ = config_->property(role_ + ".input_item_type", default_input_item_type);
output_item_type_ = config_->property(role_ + ".output_item_type", default_output_item_type);
taps_item_type_ = config_->property(role_ + ".taps_item_type", default_taps_item_type);
dump_ = config_->property(role_ + ".dump", false);
dump_filename_ = config_->property(role_ + ".dump_filename", default_dump_filename);
intermediate_freq_ = config_->property(role_ + ".IF", default_intermediate_freq);
sampling_freq_ = config_->property(role_ + ".sampling_frequency", default_sampling_freq);
int number_of_taps = config_->property(role_ + ".number_of_taps", default_number_of_taps);
unsigned int number_of_bands = config_->property(role_ + ".number_of_bands", default_number_of_bands);
std::string filter_type = config_->property(role_ + ".filter_type", default_filter_type);
if (filter_type.compare("lowpass") != 0)
{
std::vector<double> taps_d;
std::vector<double> bands;
std::vector<double> ampl;
std::vector<double> error_w;
std::string option;
double option_value;
for (unsigned int i = 0; i < number_of_bands; i++)
{
option = ".band" + boost::lexical_cast<std::string>(i + 1) + "_begin";
option_value = config_->property(role_ + option, default_bands[i]);
bands.push_back(option_value);
option = ".band" + boost::lexical_cast<std::string>(i + 1) + "_end";
option_value = config_->property(role_ + option, default_bands[i]);
bands.push_back(option_value);
option = ".ampl" + boost::lexical_cast<std::string>(i + 1) + "_begin";
option_value = config_->property(role_ + option, default_bands[i]);
ampl.push_back(option_value);
option = ".ampl" + boost::lexical_cast<std::string>(i + 1) + "_end";
option_value = config_->property(role_ + option, default_bands[i]);
ampl.push_back(option_value);
option = ".band" + boost::lexical_cast<std::string>(i + 1) + "_error";
option_value = config_->property(role_ + option, default_bands[i]);
error_w.push_back(option_value);
}
int grid_density = config_->property(role_ + ".grid_density", default_grid_density);
taps_d = gr::filter::pm_remez(number_of_taps - 1, bands, ampl, error_w, filter_type, grid_density);
taps_.reserve(taps_d.size());
for (std::vector<double>::iterator it = taps_d.begin(); it != taps_d.end(); it++)
{
taps_.push_back(static_cast<float>(*it));
}
}
else
{
double default_bw = 2000000.0;
double bw_ = config_->property(role_ + ".bw", default_bw);
double default_tw = bw_ / 10.0;
double tw_ = config_->property(role_ + ".tw", default_tw);
taps_ = gr::filter::firdes::low_pass(1.0, sampling_freq_, bw_, tw_);
}
}

2
src/algorithms/input_filter/adapters/freq_xlating_fir_filter.h
View File

@ -95,6 +95,7 @@ private:
gr::filter::freq_xlating_fir_filter_fcf::sptr freq_xlating_fir_filter_fcf_;
gr::filter::freq_xlating_fir_filter_scf::sptr freq_xlating_fir_filter_scf_;
ConfigurationInterface* config_;
int decimation_factor_;
bool dump_;
std::string dump_filename_;
std::string input_item_type_;
@ -114,7 +115,6 @@ private:
gr::blocks::float_to_short::sptr float_to_short_2_;
short_x2_to_cshort_sptr short_x2_to_cshort_;
complex_float_to_complex_byte_sptr complex_to_complex_byte_;
void init();
};
#endif // GNSS_SDR_FREQ_XLATING_FIR_FILTER_H_