59 lines
1.8 KiB
C++
59 lines
1.8 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_SQUELCH_BASE_FF_H
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#define INCLUDED_REPEATER_SQUELCH_BASE_FF_H
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#include <gr_block.h>
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class repeater_squelch_base_ff : public gr_block
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{
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private:
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int d_ramp;
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int d_ramped;
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bool d_gate;
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double d_envelope;
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enum { ST_MUTED, ST_ATTACK, ST_UNMUTED, ST_DECAY } d_state;
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protected:
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virtual void update_state(const float &sample) {};
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virtual bool mute() const { return false; };
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public:
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repeater_squelch_base_ff(const char *name, int ramp, bool gate);
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int ramp() const { return d_ramp; }
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void set_ramp(int ramp) { d_ramp = ramp; }
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bool gate() const { return d_gate; }
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void set_gate(bool gate) { d_gate = gate; }
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bool unmuted() const { return (d_state == ST_UNMUTED || d_state == ST_ATTACK); }
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virtual std::vector<float> squelch_range() const = 0;
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int general_work (int noutput_items,
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gr_vector_int &ninput_items,
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gr_vector_const_void_star &input_items,
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gr_vector_void_star &output_items);
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};
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#endif /* INCLUDED_REPEATER_SQUELCH_BASE_FF_H */
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