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/* -*- c++ -*- */
/*
* Copyright 2015 Free Software Foundation, Inc.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifndef INCLUDED_DTV_DVBT_DVBT_DEMAP_IMPL_H
#define INCLUDED_DTV_DVBT_DVBT_DEMAP_IMPL_H
#include "dvbt_configure.h"
#include <gnuradio/dtv/dvbt_demap.h>
#include <volk/volk_alloc.hh>
namespace gr {
namespace dtv {
class dvbt_demap_impl : public dvbt_demap
{
private:
const dvbt_configure config;
int d_nsize;
// Constellation size
const unsigned char d_constellation_size;
// Transmission mode
dvbt_transmission_mode_t d_transmission_mode;
// Step on each axis of the constellation
unsigned char d_step;
// Keep Alpha internally
unsigned char d_alpha;
// Gain for the complex values
float d_gain;
volk::vector<gr_complex> d_constellation_points;
volk::vector<float> d_sq_dist;
void make_constellation_points(int size, int step, int alpha);
int find_constellation_value(gr_complex val);
int bin_to_gray(int val);
public:
dvbt_demap_impl(int nsize,
dvb_constellation_t constellation,
dvbt_hierarchy_t hierarchy,
dvbt_transmission_mode_t transmission,
float gain);
~dvbt_demap_impl() override;
void forecast(int noutput_items, gr_vector_int& ninput_items_required) override;
int general_work(int noutput_items,
gr_vector_int& ninput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items) override;
};
} // namespace dtv
} // namespace gr
#endif /* INCLUDED_DTV_DVBT_DVBT_DEMAP_IMPL_H */
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