<commit_before>/*
 *      demod_hapn48.c -- HAPN 4800 baud demodulator (G3RUH)
 *
 *      Copyright (C) 1996  
 *          <NAME> (<EMAIL>, <EMAIL>)
 *
 *      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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/* ---------------------------------------------------------------------- */

#include "multimon.h"
#include "filter.h"
#include <math.h>
#include <string.h>

/* ---------------------------------------------------------------------- */

#define FREQ_SAMP  22050
#define BAUD       4800

/* ---------------------------------------------------------------------- */

#define SPHASEINC (0x10000u*BAUD/FREQ_SAMP)

/* ---------------------------------------------------------------------- */
	
static void hapn48_init(struct demod_state *s)
{
	hdlc_init(s);
	memset(&s->l1.hapn48, 0, sizeof(s->l1.hapn48));
}

/* ---------------------------------------------------------------------- */

static void hapn48_demod(struct demod_state *s, float *buffer, int length)
{
	int cursync;
	unsigned int curbit;

	for (; length > 0; length--, buffer++) {
		s->l1.hapn48.lvlhi *= 0.999;
		s->l1.hapn48.lvllo *= 0.999;
		if (buffer[1] > s->l1.hapn48.lvlhi)
			s->l1.hapn48.lvlhi = buffer[1];
		if (buffer[1] < s->l1.hapn48.lvllo)
			s->l1.hapn48.lvllo = buffer[1];
		cursync = 0;
		s->l1.hapn48.shreg = (s->l1.hapn48.shreg << 1) | 
			(s->l1.hapn48.shreg & 1);
		if (buffer[1] > s->l1.hapn48.lvlhi * 0.5) {
			s->l1.hapn48.shreg |= 1;
			cursync = (buffer[1] > buffer[0] && buffer[1] > buffer[2]);
		} else if (buffer[1] < s->l1.hapn48.lvllo * 0.5) {
			s->l1.hapn48.shreg &= ~1;
			cursync = (buffer[1] < buffer[0] && buffer[1] < buffer[2]);
		}
		verbprintf(10, "%c", '0' + (s->l1.hapn48.shreg & 1));
		s->l1.hapn48.sphase += SPHASEINC;
		if (((s->l1.hapn48.shreg >> 1) ^ s->l1.hapn48.shreg) & 1) {
			if (s->l1.hapn48.sphase >= 0x8000+SPHASEINC/2)
				s->l1.hapn48.sphase -= 0x800;<commit_msg>Fix: remove unused variable.<commit_after>/*
 *      demod_hapn48.c -- HAPN 4800 baud demodulator (G3RUH)
 *
 *      Copyright (C) 1996  
 *          <NAME> (<EMAIL>, <EMAIL>)
 *
 *      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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/* ---------------------------------------------------------------------- */

#include "multimon.h"
#include "filter.h"
#include <math.h>
#include <string.h>

/* ---------------------------------------------------------------------- */

#define FREQ_SAMP  22050
#define BAUD       4800

/* ---------------------------------------------------------------------- */

#define SPHASEINC (0x10000u*BAUD/FREQ_SAMP)

/* ---------------------------------------------------------------------- */
	
static void hapn48_init(struct demod_state *s)
{
	hdlc_init(s);
	memset(&s->l1.hapn48, 0, sizeof(s->l1.hapn48));
}

/* ---------------------------------------------------------------------- */

static void hapn48_demod(struct demod_state *s, float *buffer, int length)
{
//	int cursync;
	unsigned int curbit;

	for (; length > 0; length--, buffer++) {
		s->l1.hapn48.lvlhi *= 0.999;
		s->l1.hapn48.lvllo *= 0.999;
		if (buffer[1] > s->l1.hapn48.lvlhi)
			s->l1.hapn48.lvlhi = buffer[1];
		if (buffer[1] < s->l1.hapn48.lvllo)
			s->l1.hapn48.lvllo = buffer[1];
//		cursync = 0;
		s->l1.hapn48.shreg = (s->l1.hapn48.shreg << 1) | 
			(s->l1.hapn48.shreg & 1);
		if (buffer[1] > s->l1.hapn48.lvlhi * 0.5) {
			s->l1.hapn48.shreg |= 1;
//			cursync = (buffer[1] > buffer[0] && buffer[1] > buffer[2]);
		} else if (buffer[1] < s->l1.hapn48.lvllo * 0.5) {
			s->l1.hapn48.shreg &= ~1;
//			cursync = (buffer[1] < buffer[0] && buffer[1] < buffer[2]);
		}
		verbprintf(10, "%c", '0' + (s->l1.hapn48.shreg & 1));
		s->l1.hapn48.sphase += SPHASEINC;
		if (((s->l1.hapn48.shreg >> 1) ^ s->l1.hapn48.shreg) & 1) {
			if (s->l1.hapn48.sphase >= 0x8000+SPHASEINC/2)
				s->l1.hapn48.sphase -= 0x800;
{'fraction_non_alphanumeric': 0.2728497209928805, 'fraction_numerical': 0.05811044833557822, 'mean_word_length': 1.787131367292225, 'pattern_counts': {'":': 0, '<': 25, '<?xml version=': 0, '>': 71, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '3588730', 'n_tokens_mistral': 2069, 'n_tokens_neox': 1842, 'n_words': 462}