/*
 * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
 *
 * This file is part of PortaPack.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef __PROC_FSK_H__
#define __PROC_FSK_H__

#include "baseband_processor.hpp"

#include "channel_decimator.hpp"
#include "dsp_decimate.hpp"
#include "dsp_demodulate.hpp"
#include "dsp_fir_taps.hpp"

#include "clock_recovery.hpp"
#include "access_code_correlator.hpp"
#include "packet_builder.hpp"

#include "message.hpp"

#include <cstdint>
#include <cstddef>
#include <bitset>

class FSKProcessor : public BasebandProcessor {
public:
	FSKProcessor(MessageHandlerMap& message_handlers);
	~FSKProcessor();

	void configure(const FSKConfiguration new_configuration);

	void execute(buffer_c8_t buffer) override;

private:
	ChannelDecimator decimator { ChannelDecimator::DecimationFactor::By16 };
	const fir_taps_real<64>& channel_filter_taps = taps_64_lp_031_070_tfilter;
	dsp::decimate::FIRAndDecimateBy2Complex<64> channel_filter { channel_filter_taps.taps };
	dsp::demodulate::FM demod { 76800, 9600 * 2 };

	ClockRecovery clock_recovery;
	AccessCodeCorrelator access_code_correlator;
	PacketBuilder packet_builder;

	MessageHandlerMap& message_handlers;

	void consume_symbol(const uint_fast8_t symbol, const bool access_code_found);
	void payload_handler(const std::bitset<256>& payload, const size_t bits_received);
};

#endif/*__PROC_FSK_H__*/