86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
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/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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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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#ifndef __PROC_AIS_H__
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#define __PROC_AIS_H__
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#include "baseband_processor.hpp"
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#include "baseband_thread.hpp"
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#include "rssi_thread.hpp"
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#include "channel_decimator.hpp"
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#include "matched_filter.hpp"
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#include "clock_recovery.hpp"
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#include "symbol_coding.hpp"
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#include "packet_builder.hpp"
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#include "baseband_packet.hpp"
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#include "message.hpp"
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#include <cstdint>
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#include <cstddef>
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#include <bitset>
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#include "ais_baseband.hpp"
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class AISProcessor : public BasebandProcessor {
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public:
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AISProcessor();
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void execute(const buffer_c8_t& buffer) override;
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private:
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static constexpr size_t baseband_fs = 2457600;
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BasebandThread baseband_thread { baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive };
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RSSIThread rssi_thread { NORMALPRIO + 10 };
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std::array<complex16_t, 512> dst { };
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const buffer_c16_t dst_buffer {
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dst.data(),
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dst.size()
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};
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dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0 { };
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dsp::decimate::FIRC16xR16x32Decim8 decim_1 { };
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dsp::matched_filter::MatchedFilter mf { baseband::ais::square_taps_38k4_1t_p, 2 };
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clock_recovery::ClockRecovery<clock_recovery::FixedErrorFilter> clock_recovery {
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19200, 9600, { 0.0555f },
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[this](const float symbol) { this->consume_symbol(symbol); }
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};
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symbol_coding::NRZIDecoder nrzi_decode { };
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PacketBuilder<BitPattern, BitPattern, BitPattern> packet_builder {
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{ 0b0101010101111110, 16, 1 },
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{ 0b111110, 6 },
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{ 0b01111110, 8 },
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[this](const baseband::Packet& packet) {
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this->payload_handler(packet);
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}
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};
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void consume_symbol(const float symbol);
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void payload_handler(const baseband::Packet& packet);
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};
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#endif/*__PROC_AIS_H__*/
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