blob: ea8ba8564a3b2d7846d734e072b75830525d84a1 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
#pragma once
/*
* (C) 2013 by Andreas Eversberg <jolly@eversberg.eu>
* (C) 2015 by Alexander Chemeris <Alexander.Chemeris@fairwaves.co>
* (C) 2016 by Tom Tsou <tom.tsou@ettus.com>
* (C) 2017 by Harald Welte <laforge@gnumonks.org>
* (C) 2022 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> / Eric Wild <ewild@sysmocom.de>
*
* All Rights Reserved
*
* SPDX-License-Identifier: GPL-2.0+
*
* 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.
*/
#include <osmocom/core/bits.h>
struct sch_info {
int bsic;
int t1;
int t2;
int t3p;
};
#define GSM_SCH_INFO_LEN 25
#define GSM_SCH_UNCODED_LEN 35
#define GSM_SCH_CODED_LEN 78
int gsm_sch_decode(uint8_t *sb_info, sbit_t *burst);
int gsm_sch_parse(const uint8_t *sb_info, struct sch_info *desc);
int gsm_sch_to_fn(struct sch_info *sch);
int gsm_sch_check_fn(int fn);
int gsm_fcch_check_fn(int fn);
int gsm_fcch_check_ts(int ts, int fn);
int gsm_sch_check_ts(int ts, int fn);
double gsm_fcch_offset(float *burst, int len);
int float_to_sbit(const float *in, sbit_t *out, float scale, int len);
|
