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https://github.com/gnss-sdr/gnss-sdr
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Improving freq xlating fir filter adapter configuration
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06015f82b3
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@ -43,38 +43,112 @@ using google::LogMessage;
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FreqXlatingFirFilter::FreqXlatingFirFilter(ConfigurationInterface* configuration, std::string role,
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unsigned int in_streams, unsigned int out_streams) : config_(configuration), role_(role), in_streams_(in_streams), out_streams_(out_streams)
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{
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size_t item_size;
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(*this).init();
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int decimation_factor;
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std::string default_input_item_type = "gr_complex";
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std::string default_output_item_type = "gr_complex";
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std::string default_taps_item_type = "float";
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std::string default_dump_filename = "../data/input_filter.dat";
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double default_intermediate_freq = 0.0;
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double default_sampling_freq = 4000000.0;
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int default_number_of_taps = 6;
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unsigned int default_number_of_bands = 2;
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std::vector<double> default_bands = {0.0, 0.4, 0.6, 1.0};
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std::vector<double> default_ampl = {1.0, 1.0, 0.0, 0.0};
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std::vector<double> default_error_w = {1.0, 1.0};
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std::string default_filter_type = "bandpass";
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int default_grid_density = 16;
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int default_decimation_factor = 1;
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decimation_factor = config_->property(role_ + ".decimation_factor", default_decimation_factor);
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DLOG(INFO) << "role " << role_;
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input_item_type_ = config_->property(role_ + ".input_item_type", default_input_item_type);
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output_item_type_ = config_->property(role_ + ".output_item_type", default_output_item_type);
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taps_item_type_ = config_->property(role_ + ".taps_item_type", default_taps_item_type);
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dump_ = config_->property(role_ + ".dump", false);
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dump_filename_ = config_->property(role_ + ".dump_filename", default_dump_filename);
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intermediate_freq_ = config_->property(role_ + ".IF", default_intermediate_freq);
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sampling_freq_ = config_->property(role_ + ".sampling_frequency", default_sampling_freq);
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int number_of_taps = config_->property(role_ + ".number_of_taps", default_number_of_taps);
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unsigned int number_of_bands = config_->property(role_ + ".number_of_bands", default_number_of_bands);
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std::string filter_type = config_->property(role_ + ".filter_type", default_filter_type);
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decimation_factor_ = config_->property(role_ + ".decimation_factor", default_decimation_factor);
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if (filter_type.compare("lowpass") != 0)
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{
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std::vector<double> taps_d;
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std::vector<double> bands;
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std::vector<double> ampl;
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std::vector<double> error_w;
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std::string option;
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double option_value;
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for (unsigned int i = 0; i < number_of_bands; i++)
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{
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option = ".band" + boost::lexical_cast<std::string>(i + 1) + "_begin";
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option_value = config_->property(role_ + option, default_bands[i]);
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bands.push_back(option_value);
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option = ".band" + boost::lexical_cast<std::string>(i + 1) + "_end";
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option_value = config_->property(role_ + option, default_bands[i]);
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bands.push_back(option_value);
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option = ".ampl" + boost::lexical_cast<std::string>(i + 1) + "_begin";
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option_value = config_->property(role_ + option, default_bands[i]);
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ampl.push_back(option_value);
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option = ".ampl" + boost::lexical_cast<std::string>(i + 1) + "_end";
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option_value = config_->property(role_ + option, default_bands[i]);
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ampl.push_back(option_value);
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option = ".band" + boost::lexical_cast<std::string>(i + 1) + "_error";
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option_value = config_->property(role_ + option, default_bands[i]);
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error_w.push_back(option_value);
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}
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int grid_density = config_->property(role_ + ".grid_density", default_grid_density);
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taps_d = gr::filter::pm_remez(number_of_taps - 1, bands, ampl, error_w, filter_type, grid_density);
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taps_.reserve(taps_d.size());
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for (std::vector<double>::iterator it = taps_d.begin(); it != taps_d.end(); it++)
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{
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taps_.push_back(static_cast<float>(*it));
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}
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}
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else
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{
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double default_bw = (sampling_freq_ / decimation_factor_) / 2;
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double bw_ = config_->property(role_ + ".bw", default_bw);
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double default_tw = bw_ / 10.0;
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double tw_ = config_->property(role_ + ".tw", default_tw);
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taps_ = gr::filter::firdes::low_pass(1.0, sampling_freq_, bw_, tw_);
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}
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size_t item_size;
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if ((taps_item_type_.compare("float") == 0) && (input_item_type_.compare("gr_complex") == 0) && (output_item_type_.compare("gr_complex") == 0))
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{
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item_size = sizeof(gr_complex); //output
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input_size_ = sizeof(gr_complex); //input
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freq_xlating_fir_filter_ccf_ = gr::filter::freq_xlating_fir_filter_ccf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
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freq_xlating_fir_filter_ccf_ = gr::filter::freq_xlating_fir_filter_ccf::make(decimation_factor_, taps_, intermediate_freq_, sampling_freq_);
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DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_ccf_->unique_id() << ")";
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}
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else if ((taps_item_type_.compare("float") == 0) && (input_item_type_.compare("float") == 0) && (output_item_type_.compare("gr_complex") == 0))
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{
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item_size = sizeof(gr_complex);
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input_size_ = sizeof(float); //input
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freq_xlating_fir_filter_fcf_ = gr::filter::freq_xlating_fir_filter_fcf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
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freq_xlating_fir_filter_fcf_ = gr::filter::freq_xlating_fir_filter_fcf::make(decimation_factor_, taps_, intermediate_freq_, sampling_freq_);
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DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_fcf_->unique_id() << ")";
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}
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else if ((taps_item_type_.compare("float") == 0) && (input_item_type_.compare("short") == 0) && (output_item_type_.compare("gr_complex") == 0))
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{
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item_size = sizeof(gr_complex);
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input_size_ = sizeof(int16_t); //input
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freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
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freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor_, taps_, intermediate_freq_, sampling_freq_);
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DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_scf_->unique_id() << ")";
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}
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else if ((taps_item_type_.compare("float") == 0) && (input_item_type_.compare("short") == 0) && (output_item_type_.compare("cshort") == 0))
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{
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item_size = sizeof(lv_16sc_t);
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input_size_ = sizeof(int16_t); //input
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freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
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freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor_, taps_, intermediate_freq_, sampling_freq_);
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DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_scf_->unique_id() << ")";
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complex_to_float_ = gr::blocks::complex_to_float::make();
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float_to_short_1_ = gr::blocks::float_to_short::make();
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@ -86,7 +160,7 @@ FreqXlatingFirFilter::FreqXlatingFirFilter(ConfigurationInterface* configuration
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item_size = sizeof(gr_complex);
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input_size_ = sizeof(int8_t); //input
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gr_char_to_short_ = gr::blocks::char_to_short::make();
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freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
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freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor_, taps_, intermediate_freq_, sampling_freq_);
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DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_scf_->unique_id() << ")";
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}
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else if ((taps_item_type_.compare("float") == 0) && (input_item_type_.compare("byte") == 0) && (output_item_type_.compare("cbyte") == 0))
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@ -94,7 +168,7 @@ FreqXlatingFirFilter::FreqXlatingFirFilter(ConfigurationInterface* configuration
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item_size = sizeof(lv_8sc_t);
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input_size_ = sizeof(int8_t); //input
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gr_char_to_short_ = gr::blocks::char_to_short::make();
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freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
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freq_xlating_fir_filter_scf_ = gr::filter::freq_xlating_fir_filter_scf::make(decimation_factor_, taps_, intermediate_freq_, sampling_freq_);
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DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_scf_->unique_id() << ")";
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complex_to_complex_byte_ = make_complex_float_to_complex_byte();
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}
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@ -311,83 +385,3 @@ gr::basic_block_sptr FreqXlatingFirFilter::get_right_block()
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LOG(ERROR) << " Unknown input filter input/output item type conversion";
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}
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}
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void FreqXlatingFirFilter::init()
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{
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std::string default_input_item_type = "gr_complex";
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std::string default_output_item_type = "gr_complex";
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std::string default_taps_item_type = "float";
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std::string default_dump_filename = "../data/input_filter.dat";
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double default_intermediate_freq = 0.0;
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double default_sampling_freq = 4000000.0;
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int default_number_of_taps = 6;
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unsigned int default_number_of_bands = 2;
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std::vector<double> default_bands = {0.0, 0.4, 0.6, 1.0};
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std::vector<double> default_ampl = {1.0, 1.0, 0.0, 0.0};
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std::vector<double> default_error_w = {1.0, 1.0};
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std::string default_filter_type = "bandpass";
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int default_grid_density = 16;
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DLOG(INFO) << "role " << role_;
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input_item_type_ = config_->property(role_ + ".input_item_type", default_input_item_type);
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output_item_type_ = config_->property(role_ + ".output_item_type", default_output_item_type);
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taps_item_type_ = config_->property(role_ + ".taps_item_type", default_taps_item_type);
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dump_ = config_->property(role_ + ".dump", false);
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dump_filename_ = config_->property(role_ + ".dump_filename", default_dump_filename);
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intermediate_freq_ = config_->property(role_ + ".IF", default_intermediate_freq);
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sampling_freq_ = config_->property(role_ + ".sampling_frequency", default_sampling_freq);
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int number_of_taps = config_->property(role_ + ".number_of_taps", default_number_of_taps);
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unsigned int number_of_bands = config_->property(role_ + ".number_of_bands", default_number_of_bands);
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std::string filter_type = config_->property(role_ + ".filter_type", default_filter_type);
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if (filter_type.compare("lowpass") != 0)
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{
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std::vector<double> taps_d;
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std::vector<double> bands;
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std::vector<double> ampl;
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std::vector<double> error_w;
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std::string option;
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double option_value;
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for (unsigned int i = 0; i < number_of_bands; i++)
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{
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option = ".band" + boost::lexical_cast<std::string>(i + 1) + "_begin";
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option_value = config_->property(role_ + option, default_bands[i]);
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bands.push_back(option_value);
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option = ".band" + boost::lexical_cast<std::string>(i + 1) + "_end";
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option_value = config_->property(role_ + option, default_bands[i]);
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bands.push_back(option_value);
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option = ".ampl" + boost::lexical_cast<std::string>(i + 1) + "_begin";
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option_value = config_->property(role_ + option, default_bands[i]);
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ampl.push_back(option_value);
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option = ".ampl" + boost::lexical_cast<std::string>(i + 1) + "_end";
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option_value = config_->property(role_ + option, default_bands[i]);
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ampl.push_back(option_value);
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option = ".band" + boost::lexical_cast<std::string>(i + 1) + "_error";
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option_value = config_->property(role_ + option, default_bands[i]);
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error_w.push_back(option_value);
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}
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int grid_density = config_->property(role_ + ".grid_density", default_grid_density);
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taps_d = gr::filter::pm_remez(number_of_taps - 1, bands, ampl, error_w, filter_type, grid_density);
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taps_.reserve(taps_d.size());
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for (std::vector<double>::iterator it = taps_d.begin(); it != taps_d.end(); it++)
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{
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taps_.push_back(static_cast<float>(*it));
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}
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}
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else
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{
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double default_bw = 2000000.0;
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double bw_ = config_->property(role_ + ".bw", default_bw);
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double default_tw = bw_ / 10.0;
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double tw_ = config_->property(role_ + ".tw", default_tw);
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taps_ = gr::filter::firdes::low_pass(1.0, sampling_freq_, bw_, tw_);
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}
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}
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@ -95,6 +95,7 @@ private:
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gr::filter::freq_xlating_fir_filter_fcf::sptr freq_xlating_fir_filter_fcf_;
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gr::filter::freq_xlating_fir_filter_scf::sptr freq_xlating_fir_filter_scf_;
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ConfigurationInterface* config_;
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int decimation_factor_;
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bool dump_;
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std::string dump_filename_;
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std::string input_item_type_;
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@ -114,7 +115,6 @@ private:
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gr::blocks::float_to_short::sptr float_to_short_2_;
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short_x2_to_cshort_sptr short_x2_to_cshort_;
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complex_float_to_complex_byte_sptr complex_to_complex_byte_;
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void init();
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};
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#endif // GNSS_SDR_FREQ_XLATING_FIR_FILTER_H_
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