49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
#pragma once
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/*
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* (C) 2013 by Andreas Eversberg <jolly@eversberg.eu>
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* (C) 2015 by Alexander Chemeris <Alexander.Chemeris@fairwaves.co>
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* (C) 2016 by Tom Tsou <tom.tsou@ettus.com>
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* (C) 2017 by Harald Welte <laforge@gnumonks.org>
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* (C) 2022 by 2022 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> / Eric Wild <ewild@sysmocom.de>
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*
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* All Rights Reserved
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* This program 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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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#include <osmocom/core/bits.h>
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struct sch_info {
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int bsic;
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int t1;
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int t2;
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int t3p;
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};
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#define GSM_SCH_INFO_LEN 25
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#define GSM_SCH_UNCODED_LEN 35
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#define GSM_SCH_CODED_LEN 78
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int gsm_sch_decode(uint8_t *sb_info, sbit_t *burst);
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int gsm_sch_parse(const uint8_t *sb_info, struct sch_info *desc);
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int gsm_sch_to_fn(struct sch_info *sch);
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int gsm_sch_check_fn(int fn);
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int gsm_fcch_check_fn(int fn);
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int gsm_fcch_check_ts(int ts, int fn);
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int gsm_sch_check_ts(int ts, int fn);
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double gsm_fcch_offset(float *burst, int len);
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int float_to_sbit(const float *in, sbit_t *out, float scale, int len);
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