From 970bb33df3e9dfe19d9cae49a95494b7e175644f Mon Sep 17 00:00:00 2001
From: Tom Rondeau <trondeau@vt.edu>
Date: Sat, 20 Oct 2012 17:14:02 -0400
Subject: analog: adding squelch_base_ff and ctcss_squelch_ff to analog.
This addresses the issues of inheriting from both gr_block and another block (squelch_base_ff, in this case).
---
gr-analog/lib/ctcss_squelch_ff_impl.h | 82 +++++++++++++++++++++++++++++++++++
1 file changed, 82 insertions(+)
create mode 100644 gr-analog/lib/ctcss_squelch_ff_impl.h
(limited to 'gr-analog/lib/ctcss_squelch_ff_impl.h')
diff --git a/gr-analog/lib/ctcss_squelch_ff_impl.h b/gr-analog/lib/ctcss_squelch_ff_impl.h
new file mode 100644
index 0000000000..0827fbafe3
--- /dev/null
+++ b/gr-analog/lib/ctcss_squelch_ff_impl.h
@@ -0,0 +1,82 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2006,2012 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef INCLUDED_ANALOG_CTCSS_SQUELCH_FF_IMPL_H
+#define INCLUDED_ANALOG_CTCSS_SQUELCH_FF_IMPL_H
+
+#include <analog/ctcss_squelch_ff.h>
+#include "squelch_base_ff_impl.h"
+#include <fft/goertzel.h>
+
+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;
+ bool d_mute;
+
+ fft::goertzel d_goertzel_l;
+ fft::goertzel d_goertzel_c;
+ fft::goertzel d_goertzel_r;
+
+ int find_tone(float freq);
+
+ 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) { d_level = level; }
+ int len() const { return d_len; }
+
+ 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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