/* -*- c++ -*- */
/* 
 * Copyright 2019 Jay Arrowfield.
 * 
 * This 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 3, or (at your option)
 * any later version.
 * 
 * This software 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 software; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef INCLUDED_JAY_POCSAG_DECODER_IMPL_H
#define INCLUDED_JAY_POCSAG_DECODER_IMPL_H

#include <jay/pocsag_decoder.h>
#include "PocsagDecoder.hpp"

namespace gr
{
namespace jay
{

class pocsag_decoder_impl : public pocsag_decoder
{
    private:
	enum State
	{
		PreambleSlow = 0,
		SyncSlow,
		DataSlow,
		PreambleFast,
		SyncFast,
		DataFast,
		NUM_STATES
		
	};
		
	static const char *stateNames[NUM_STATES];
	
	State m_state;
	State m_stateNext;
	uint32_t m_word;
	size_t m_wordCount;
	size_t m_wordSize;
	size_t m_dataCount;
	uint8_t buffer[256];
	size_t bufferWi;
	
	PocsagDecoder dec;
	public:
	pocsag_decoder_impl();
    ~pocsag_decoder_impl();

     // Where all the action really happens
    void forecast (int noutput_items, gr_vector_int &ninput_items_required);

    int general_work(int noutput_items,
          gr_vector_int &ninput_items,
          gr_vector_const_void_star &input_items,
          gr_vector_void_star &output_items);
    };

} // namespace jay
} // namespace gr

#endif /* INCLUDED_JAY_POCSAG_DECODER_IMPL_H */