mirror of https://github.com/gnss-sdr/gnss-sdr
139 lines
5.0 KiB
C++
139 lines
5.0 KiB
C++
/*!
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* \file direct_resampler_conditioner.cc
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* \brief Implementation of an adapter of a direct resampler conditioner block
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* to a SignalConditionerInterface
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* \author Carlos Aviles, 2010. carlos.avilesr(at)googlemail.com
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2019 (see AUTHORS file for a list of contributors)
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*
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* GNSS-SDR is a software defined Global Navigation
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* Satellite Systems receiver
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*
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* This file is part of GNSS-SDR.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*
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* -------------------------------------------------------------------------
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*/
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#include "direct_resampler_conditioner.h"
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#include "configuration_interface.h"
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#include "direct_resampler_conditioner_cb.h"
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#include "direct_resampler_conditioner_cc.h"
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#include "direct_resampler_conditioner_cs.h"
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#include <glog/logging.h>
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#include <gnuradio/blocks/file_sink.h>
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#include <volk/volk.h> // for lv_8sc_t
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#include <cmath>
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#include <cstdint>
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#include <limits>
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DirectResamplerConditioner::DirectResamplerConditioner(
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const ConfigurationInterface* configuration, const std::string& role,
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unsigned int in_stream, unsigned int out_stream) : role_(role), in_stream_(in_stream), out_stream_(out_stream)
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{
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std::string default_item_type = "short";
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std::string default_dump_file = "./data/signal_conditioner.dat";
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double fs_in_deprecated;
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double fs_in;
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fs_in_deprecated = configuration->property("GNSS-SDR.internal_fs_hz", 2048000.0);
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fs_in = configuration->property("GNSS-SDR.internal_fs_sps", fs_in_deprecated);
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sample_freq_in_ = configuration->property(role_ + ".sample_freq_in", 4000000.0);
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sample_freq_out_ = configuration->property(role_ + ".sample_freq_out", fs_in);
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if (std::fabs(fs_in - sample_freq_out_) > std::numeric_limits<double>::epsilon())
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{
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std::string aux_warn = "CONFIGURATION WARNING: Parameters GNSS-SDR.internal_fs_sps and " + role_ + ".sample_freq_out are not set to the same value!";
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LOG(WARNING) << aux_warn;
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std::cout << aux_warn << std::endl;
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}
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item_type_ = configuration->property(role + ".item_type", default_item_type);
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dump_ = configuration->property(role + ".dump", false);
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DLOG(INFO) << "dump_ is " << dump_;
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dump_filename_ = configuration->property(role + ".dump_filename", default_dump_file);
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if (item_type_ == "gr_complex")
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{
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item_size_ = sizeof(gr_complex);
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resampler_ = direct_resampler_make_conditioner_cc(sample_freq_in_, sample_freq_out_);
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DLOG(INFO) << "sample_freq_in " << sample_freq_in_;
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DLOG(INFO) << "sample_freq_out" << sample_freq_out_;
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DLOG(INFO) << "Item size " << item_size_;
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DLOG(INFO) << "resampler(" << resampler_->unique_id() << ")";
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}
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else if (item_type_ == "cshort")
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{
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item_size_ = sizeof(lv_16sc_t);
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resampler_ = direct_resampler_make_conditioner_cs(sample_freq_in_, sample_freq_out_);
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DLOG(INFO) << "sample_freq_in " << sample_freq_in_;
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DLOG(INFO) << "sample_freq_out" << sample_freq_out_;
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DLOG(INFO) << "Item size " << item_size_;
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DLOG(INFO) << "resampler(" << resampler_->unique_id() << ")";
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}
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else if (item_type_ == "cbyte")
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{
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item_size_ = sizeof(lv_8sc_t);
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resampler_ = direct_resampler_make_conditioner_cb(sample_freq_in_, sample_freq_out_);
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DLOG(INFO) << "sample_freq_in " << sample_freq_in_;
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DLOG(INFO) << "sample_freq_out" << sample_freq_out_;
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DLOG(INFO) << "Item size " << item_size_;
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DLOG(INFO) << "resampler(" << resampler_->unique_id() << ")";
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}
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else
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{
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LOG(WARNING) << item_type_ << " unrecognized item type for resampler";
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item_size_ = sizeof(int16_t);
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}
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if (dump_)
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{
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DLOG(INFO) << "Dumping output into file " << dump_filename_;
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file_sink_ = gr::blocks::file_sink::make(item_size_, dump_filename_.c_str());
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DLOG(INFO) << "file_sink(" << file_sink_->unique_id() << ")";
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}
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if (in_stream_ > 1)
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{
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LOG(ERROR) << "This implementation only supports one input stream";
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}
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if (out_stream_ > 1)
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{
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LOG(ERROR) << "This implementation only supports one output stream";
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}
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}
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void DirectResamplerConditioner::connect(gr::top_block_sptr top_block)
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{
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if (dump_)
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{
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top_block->connect(resampler_, 0, file_sink_, 0);
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DLOG(INFO) << "connected resampler to file sink";
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}
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else
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{
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DLOG(INFO) << "nothing to connect internally";
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}
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}
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void DirectResamplerConditioner::disconnect(gr::top_block_sptr top_block)
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{
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if (dump_)
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{
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top_block->disconnect(resampler_, 0, file_sink_, 0);
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}
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}
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gr::basic_block_sptr DirectResamplerConditioner::get_left_block()
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{
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return resampler_;
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}
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gr::basic_block_sptr DirectResamplerConditioner::get_right_block()
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{
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return resampler_;
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}
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