mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-12-14 10:14:28 -05:00
118 lines
3.9 KiB
C++
118 lines
3.9 KiB
C++
/*
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* Copyright (C) 2024 HTotoo
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "flipper_subfile.hpp"
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#include "convert.hpp"
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#include "file_reader.hpp"
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#include "string_format.hpp"
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#include <string_view>
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namespace fs = std::filesystem;
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using namespace std::literals;
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const std::string_view filetype_name = "Filetype"sv;
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const std::string_view frequency_name = "Frequency"sv;
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const std::string_view latitude_name = "Latitute"sv;
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const std::string_view longitude_name = "Longitude"sv;
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const std::string_view protocol_name = "Protocol"sv;
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const std::string_view preset_name = "Preset"sv;
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const std::string_view te_name = "TE"sv; // only in BinRAW
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/*
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Filetype: Flipper SubGhz Key File
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Version: 1
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Frequency: 433920000
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Preset: FuriHalSubGhzPresetOok650Async
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Latitute: nan
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Longitude: nan
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Protocol: BinRAW
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Bit: 1730
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TE: 495
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Bit_RAW: 1730
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Data_RAW: 02 10 84
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te: is the quantization interval, in us.
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bit: all bit counts in file.
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bit_raw: the bits stored in the next data_raw. this 2 can repeat
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data_raw: is an encoded sequence of durations, where each bit in the sequence encodes one TE interval: 1 - high level (there is a carrier), 0 - low (no carrier). For example, TE=100, Bit_RAW=8, Data_RAW=0x37 => 0b00110111, that is, -200 200 -100 300 will be transmitted
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Filetype: Flipper SubGhz RAW File
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Version: 1
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Frequency: 433920000
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Preset: FuriHalSubGhzPresetOok650Async
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Protocol: RAW
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RAW_Data: 5832 -12188 130 -162
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raw_data- positive: carrier for n time, negative: no carrier for n time. (us)
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*/
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Optional<flippersub_metadata> read_flippersub_file(const fs::path& path) {
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File f;
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auto error = f.open(path);
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if (error)
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return {};
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flippersub_metadata metadata{};
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auto reader = FileLineReader(f);
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for (const auto& line : reader) {
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auto cols = split_string(line, ':');
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if (cols.size() != 2)
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continue; // Bad line.
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if (cols[1].length() <= 1) continue;
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std::string fixed = cols[1].data() + 1;
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fixed = trim(fixed);
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if (cols[0] == filetype_name) {
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if (fixed != "Flipper SubGhz Key File" && fixed != "Flipper SubGhz RAW File") return {}; // not supported
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} else if (cols[0] == frequency_name)
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parse_int(fixed, metadata.center_frequency);
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else if (cols[0] == latitude_name)
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parse_float_meta(fixed, metadata.latitude);
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else if (cols[0] == longitude_name)
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parse_float_meta(fixed, metadata.longitude);
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else if (cols[0] == protocol_name) {
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if (fixed == "RAW") metadata.protocol = FLIPPER_PROTO_RAW;
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if (fixed == "BinRAW") metadata.protocol = FLIPPER_PROTO_BINRAW;
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} else if (cols[0] == te_name) {
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metadata.te = atoi(fixed.c_str());
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} else if (cols[0] == preset_name) {
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if (fixed.find("FSK") != std::string::npos) {
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metadata.preset = FLIPPER_PRESET_2FSK;
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} else if (fixed.find("Ook") != std::string::npos) {
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metadata.preset = FLIPPER_PRESET_OOK;
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} else if (fixed.find("Custom") != std::string::npos) {
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metadata.preset = FLIPPER_PRESET_CUSTOM;
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}
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} else
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continue;
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}
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if (metadata.center_frequency == 0) return {}; // Parse failed.
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return metadata;
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}
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