73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
/* -*- c++ -*- */
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/*
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* Copyright 2006 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef INCLUDED_REPEATER_CTCSS_SQUELCH_FF_H
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#define INCLUDED_REPEATER_CTCSS_SQUELCH_FF_H
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#include <repeater_squelch_base_ff.h>
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#include <gri_goertzel.h>
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class repeater_ctcss_squelch_ff;
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typedef boost::shared_ptr<repeater_ctcss_squelch_ff> repeater_ctcss_squelch_ff_sptr;
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repeater_ctcss_squelch_ff_sptr
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repeater_make_ctcss_squelch_ff(int rate, float freq, float level, int len, int ramp, bool gate);
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/*!
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* \brief gate or zero output if ctcss tone not present
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* \ingroup level_blk
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*/
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class repeater_ctcss_squelch_ff : public repeater_squelch_base_ff
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{
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private:
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float d_freq;
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float d_level;
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int d_len;
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bool d_mute;
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gri_goertzel d_goertzel_l;
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gri_goertzel d_goertzel_c;
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gri_goertzel d_goertzel_r;
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gri_goertzel d_goertzel_v;
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gri_goertzel d_goertzel_w;
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gri_goertzel d_goertzel_x;
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gri_goertzel d_goertzel_y;
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gri_goertzel d_goertzel_z;
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friend repeater_ctcss_squelch_ff_sptr repeater_make_ctcss_squelch_ff(int rate, float freq, float level, int len, int ramp, bool gate);
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repeater_ctcss_squelch_ff(int rate, float freq, float level, int len, int ramp, bool gate);
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int find_tone(float freq);
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protected:
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virtual void update_state(const float &in);
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virtual bool mute() const { return d_mute; }
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public:
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std::vector<float> squelch_range() const;
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float level() const { return d_level; }
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void set_level(float level) { d_level = level; }
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int len() const { return d_len; }
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};
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#endif /* INCLUDED_REPEATER_CTCSS_SQUELCH_FF_H */
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