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/* -*- c++ -*- */
/*
* Copyright 2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifndef INCLUDED_DIGITAL_CORR_EST_CC_IMPL_H
#define INCLUDED_DIGITAL_CORR_EST_CC_IMPL_H
#include <gnuradio/digital/corr_est_cc.h>
#include <gnuradio/filter/fft_filter.h>
using namespace gr::filter;
namespace gr {
namespace digital {
class corr_est_cc_impl : public corr_est_cc
{
private:
pmt::pmt_t d_src_id;
std::vector<gr_complex> d_symbols;
const float d_sps;
unsigned int d_mark_delay, d_stashed_mark_delay;
float d_thresh, d_stashed_threshold;
kernel::fft_filter_ccc d_filter;
volk::vector<gr_complex> d_corr;
volk::vector<float> d_corr_mag;
float d_scale;
float d_pfa; // probability of false alarm
const tm_type d_threshold_method;
void _set_mark_delay(unsigned int mark_delay);
void _set_threshold(float threshold);
static constexpr int s_nitems = 24 * 1024;
public:
corr_est_cc_impl(const std::vector<gr_complex>& symbols,
float sps,
unsigned int mark_delay,
float threshold = 0.9,
tm_type threshold_method = THRESHOLD_ABSOLUTE);
~corr_est_cc_impl();
std::vector<gr_complex> symbols() const;
void set_symbols(const std::vector<gr_complex>& symbols);
unsigned int mark_delay() const;
void set_mark_delay(unsigned int mark_delay);
float threshold() const;
void set_threshold(float threshold);
int work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items) override;
};
} // namespace digital
} // namespace gr
#endif /* INCLUDED_DIGITAL_CORR_EST_CC_IMPL_H */
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