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amsq.h

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+/*	amsq.h
+
+This file is part of a program that implements a Software-Defined Radio.
+
+Copyright (C) 2013 Warren Pratt, NR0V
+
+This program 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 2
+of the License, or (at your option) any later version.
+
+This program 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 this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+The author can be reached by email at
+
+warren@wpratt.com
+
+*/
+#ifndef _amsq_h
+#define _amsq_h
+
+typedef struct _amsq
+{
+	int run;							// 0 if squelch system is OFF; 1 if it's ON
+	int size;							// size of input/output buffers
+	double* in;							// squelch input signal buffer
+	double* out;						// squelch output signal buffer
+	double* trigger;					// pointer to trigger data source
+	double* trigsig;					// buffer containing trigger signal
+	double rate;						// sample rate
+	double avtau;						// time constant for averaging noise
+	double avm;						
+	double onem_avm;
+	double avsig;
+	int state;							// state machine control
+	int count;
+	double tup;
+	double tdown;
+	int ntup;
+	int ntdown;
+	double* cup;
+	double* cdown;
+	double tail_thresh;
+	double unmute_thresh;
+	double min_tail;
+	double max_tail;
+	double muted_gain;
+} amsq, *AMSQ;
+
+extern AMSQ create_amsq (int run, int size, double* in, double* out, double* trigger, int rate, double avtau, double tup, double tdown, double tail_thresh, double unmute_thresh, double min_tail, double max_tail, double muted_gain);
+
+extern void destroy_amsq (AMSQ a);
+
+extern void flush_amsq (AMSQ a);
+
+extern void xamsq (AMSQ a);
+
+extern void xamsqcap (AMSQ a);
+
+extern void setBuffers_amsq (AMSQ a, double* in, double* out, double* trigger);
+
+extern void setSamplerate_amsq (AMSQ a, int rate);
+
+extern void setSize_amsq (AMSQ a, int size);
+
+// RXA Properties
+
+extern __declspec (dllexport) void SetRXAAMSQRun (int channel, int run);
+
+extern __declspec (dllexport) void SetRXAAMSQThreshold (int channel, double threshold);
+
+extern __declspec (dllexport) void SetRXAAMSQMaxTail (int channel, double tail);
+
+// TXA Properties
+
+extern __declspec (dllexport) void SetTXAAMSQRun (int channel, int run);
+
+extern __declspec (dllexport) void SetTXAAMSQMutedGain (int channel, double dBlevel);
+
+extern __declspec (dllexport) void SetTXAAMSQThreshold (int channel, double threshold);
+
+#endif