mirror of https://github.com/gnss-sdr/gnss-sdr
139 lines
5.4 KiB
C++
139 lines
5.4 KiB
C++
/*!
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* \file tlm_utils.cc
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* \brief Utilities for the telemetry decoder blocks.
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* \author Carles Fernandez, 2020. cfernandez(at)cttc.es
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*
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* -----------------------------------------------------------------------------
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*
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* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
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* This file is part of GNSS-SDR.
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*
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* Copyright (C) 2010-2020 (see AUTHORS file for a list of contributors)
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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 "tlm_utils.h"
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#include "gnss_sdr_filesystem.h"
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#include <matio.h>
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#include <array>
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#include <cstdint>
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#include <fstream>
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#include <iostream>
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#include <vector>
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int save_tlm_matfile(const std::string &dumpfile)
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{
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std::ifstream::pos_type size;
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const int32_t number_of_double_vars = 2;
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const int32_t number_of_int_vars = 2;
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const int32_t epoch_size_bytes = sizeof(uint64_t) + sizeof(double) * number_of_double_vars +
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sizeof(int32_t) * number_of_int_vars;
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std::ifstream dump_file;
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const std::string &dump_filename_(dumpfile);
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std::cout << "Generating .mat file for " << std::string(dump_filename_.begin(), dump_filename_.end() - 4) << '\n';
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dump_file.exceptions(std::ifstream::failbit | std::ifstream::badbit);
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try
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{
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dump_file.open(dump_filename_.c_str(), std::ios::binary | std::ios::ate);
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}
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catch (const std::ifstream::failure &e)
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{
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std::cerr << "Problem opening dump file:" << e.what() << '\n';
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return 1;
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}
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// count number of epochs and rewind
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int64_t num_epoch = 0;
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if (dump_file.is_open())
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{
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size = dump_file.tellg();
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num_epoch = static_cast<int64_t>(size) / static_cast<int64_t>(epoch_size_bytes);
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if (num_epoch == 0LL)
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{
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// empty file, exit
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return 1;
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}
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dump_file.seekg(0, std::ios::beg);
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}
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else
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{
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return 1;
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}
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auto TOW_at_current_symbol_ms = std::vector<double>(num_epoch);
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auto tracking_sample_counter = std::vector<uint64_t>(num_epoch);
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auto TOW_at_Preamble_ms = std::vector<double>(num_epoch);
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auto nav_symbol = std::vector<int32_t>(num_epoch);
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auto prn = std::vector<int32_t>(num_epoch);
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try
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{
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if (dump_file.is_open())
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{
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for (int64_t i = 0; i < num_epoch; i++)
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{
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dump_file.read(reinterpret_cast<char *>(&TOW_at_current_symbol_ms[i]), sizeof(double));
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dump_file.read(reinterpret_cast<char *>(&tracking_sample_counter[i]), sizeof(uint64_t));
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dump_file.read(reinterpret_cast<char *>(&TOW_at_Preamble_ms[i]), sizeof(double));
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dump_file.read(reinterpret_cast<char *>(&nav_symbol[i]), sizeof(int32_t));
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dump_file.read(reinterpret_cast<char *>(&prn[i]), sizeof(int32_t));
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}
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}
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dump_file.close();
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}
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catch (const std::ifstream::failure &e)
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{
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std::cerr << "Problem reading dump file:" << e.what() << '\n';
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return 1;
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}
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// WRITE MAT FILE
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mat_t *matfp;
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matvar_t *matvar;
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std::string filename = dump_filename_;
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filename.erase(filename.length() - 4, 4);
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filename.append(".mat");
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try
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{
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matfp = Mat_CreateVer(filename.c_str(), nullptr, MAT_FT_MAT73);
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if (reinterpret_cast<int64_t *>(matfp) != nullptr)
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{
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std::array<size_t, 2> dims{1, static_cast<size_t>(num_epoch)};
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matvar = Mat_VarCreate("TOW_at_current_symbol_ms", MAT_C_DOUBLE, MAT_T_DOUBLE, 2, dims.data(), TOW_at_current_symbol_ms.data(), 0);
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Mat_VarWrite(matfp, matvar, MAT_COMPRESSION_ZLIB); // or MAT_COMPRESSION_NONE
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Mat_VarFree(matvar);
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matvar = Mat_VarCreate("tracking_sample_counter", MAT_C_UINT64, MAT_T_UINT64, 2, dims.data(), tracking_sample_counter.data(), 0);
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Mat_VarWrite(matfp, matvar, MAT_COMPRESSION_ZLIB); // or MAT_COMPRESSION_NONE
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Mat_VarFree(matvar);
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matvar = Mat_VarCreate("TOW_at_Preamble_ms", MAT_C_DOUBLE, MAT_T_DOUBLE, 2, dims.data(), TOW_at_Preamble_ms.data(), 0);
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Mat_VarWrite(matfp, matvar, MAT_COMPRESSION_ZLIB); // or MAT_COMPRESSION_NONE
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Mat_VarFree(matvar);
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matvar = Mat_VarCreate("nav_symbol", MAT_C_INT32, MAT_T_INT32, 2, dims.data(), nav_symbol.data(), 0);
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Mat_VarWrite(matfp, matvar, MAT_COMPRESSION_ZLIB); // or MAT_COMPRESSION_NONE
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Mat_VarFree(matvar);
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matvar = Mat_VarCreate("PRN", MAT_C_INT32, MAT_T_INT32, 2, dims.data(), prn.data(), 0);
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Mat_VarWrite(matfp, matvar, MAT_COMPRESSION_ZLIB); // or MAT_COMPRESSION_NONE
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Mat_VarFree(matvar);
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}
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Mat_Close(matfp);
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}
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catch (const std::exception &ex)
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{
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std::cerr << "Error saving the .mat file: " << ex.what();
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}
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return 0;
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}
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bool tlm_remove_file(const std::string &file_to_remove)
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{
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errorlib::error_code ec;
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return fs::remove(fs::path(file_to_remove), ec);
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}
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