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/* -*- c++ -*- */
/*
* Copyright 2006,2012 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifndef INCLUDED_ANALOG_CTCSS_SQUELCH_FF_IMPL_H
#define INCLUDED_ANALOG_CTCSS_SQUELCH_FF_IMPL_H
#include "squelch_base_ff_impl.h"
#include <gnuradio/analog/ctcss_squelch_ff.h>
#include <gnuradio/fft/goertzel.h>
#include <memory>
namespace gr {
namespace analog {
class ctcss_squelch_ff_impl : public ctcss_squelch_ff, squelch_base_ff_impl
{
private:
float d_freq;
float d_level;
int d_len;
const int d_rate;
bool d_mute;
std::unique_ptr<fft::goertzel> d_goertzel_l;
std::unique_ptr<fft::goertzel> d_goertzel_c;
std::unique_ptr<fft::goertzel> d_goertzel_r;
static int find_tone(float freq);
static void compute_freqs(const float& freq, float& f_l, float& f_r);
void update_fft_params();
protected:
virtual void update_state(const float& in);
virtual bool mute() const { return d_mute; }
public:
ctcss_squelch_ff_impl(
int rate, float freq, float level, int len, int ramp, bool gate);
~ctcss_squelch_ff_impl();
std::vector<float> squelch_range() const;
float level() const { return d_level; }
void set_level(float level);
int len() const { return d_len; }
float frequency() const { return d_freq; }
void set_frequency(float frequency);
int ramp() const { return squelch_base_ff_impl::ramp(); }
void set_ramp(int ramp) { squelch_base_ff_impl::set_ramp(ramp); }
bool gate() const { return squelch_base_ff_impl::gate(); }
void set_gate(bool gate) { squelch_base_ff_impl::set_gate(gate); }
bool unmuted() const { return squelch_base_ff_impl::unmuted(); }
int general_work(int noutput_items,
gr_vector_int& ninput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
return squelch_base_ff_impl::general_work(
noutput_items, ninput_items, input_items, output_items);
}
};
} /* namespace analog */
} /* namespace gr */
#endif /* INCLUDED_ANALOG_CTCSS_SQUELCH_FF_IMPL_H */
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