mirror of https://gerrit.osmocom.org/libosmocore
86 lines
3.6 KiB
C
86 lines
3.6 KiB
C
/* (C) 2009 by Harald Welte <laforge@gnumonks.org>
|
|
* (C) 2012 Ivan Klyuchnikov
|
|
* (C) 2015 Sysmocom s.f.m.c. GmbH
|
|
*
|
|
* All Rights Reserved
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
/*! \defgroup bitvec Bit vectors
|
|
* @{
|
|
* \file bitvec.h */
|
|
|
|
#include <stdint.h>
|
|
#include <osmocom/core/talloc.h>
|
|
#include <stdbool.h>
|
|
|
|
/*! A single GSM bit
|
|
*
|
|
* In GSM mac blocks, every bit can be 0 or 1, or L or H. L/H are
|
|
* defined relative to the 0x2b padding pattern */
|
|
enum bit_value {
|
|
ZERO = 0, /*!< A zero (0) bit */
|
|
ONE = 1, /*!< A one (1) bit */
|
|
L = 2, /*!< A CSN.1 "L" bit */
|
|
H = 3, /*!< A CSN.1 "H" bit */
|
|
};
|
|
|
|
/*! structure describing a bit vector */
|
|
struct bitvec {
|
|
unsigned int cur_bit; /*!< cursor to the next unused bit */
|
|
unsigned int data_len; /*!< length of data array in bytes */
|
|
uint8_t *data; /*!< pointer to data array */
|
|
};
|
|
|
|
enum bit_value bitvec_get_bit_pos(const struct bitvec *bv, unsigned int bitnr);
|
|
enum bit_value bitvec_get_bit_pos_high(const struct bitvec *bv,
|
|
unsigned int bitnr);
|
|
unsigned int bitvec_get_nth_set_bit(const struct bitvec *bv, unsigned int n);
|
|
int bitvec_set_bit_pos(struct bitvec *bv, unsigned int bitnum,
|
|
enum bit_value bit);
|
|
int bitvec_set_bit(struct bitvec *bv, enum bit_value bit);
|
|
int bitvec_get_bit_high(struct bitvec *bv);
|
|
int bitvec_set_bits(struct bitvec *bv, const enum bit_value *bits, unsigned int count);
|
|
int bitvec_set_uint(struct bitvec *bv, unsigned int in, unsigned int count);
|
|
int bitvec_get_uint(struct bitvec *bv, unsigned int num_bits);
|
|
int bitvec_find_bit_pos(const struct bitvec *bv, unsigned int n, enum bit_value val);
|
|
int bitvec_spare_padding(struct bitvec *bv, unsigned int up_to_bit);
|
|
int bitvec_get_bytes(struct bitvec *bv, uint8_t *bytes, unsigned int count);
|
|
int bitvec_set_bytes(struct bitvec *bv, const uint8_t *bytes, unsigned int count);
|
|
struct bitvec *bitvec_alloc(unsigned int size, TALLOC_CTX *bvctx);
|
|
void bitvec_free(struct bitvec *bv);
|
|
int bitvec_unhex(struct bitvec *bv, const char *src);
|
|
unsigned int bitvec_pack(const struct bitvec *bv, uint8_t *buffer);
|
|
unsigned int bitvec_unpack(struct bitvec *bv, const uint8_t *buffer);
|
|
uint64_t bitvec_read_field(struct bitvec *bv, unsigned int *read_index, unsigned int len);
|
|
int bitvec_write_field(struct bitvec *bv, unsigned int *write_index, uint64_t val, unsigned int len);
|
|
int bitvec_fill(struct bitvec *bv, unsigned int num_bits, enum bit_value fill);
|
|
char bit_value_to_char(enum bit_value v);
|
|
void bitvec_to_string_r(const struct bitvec *bv, char *str);
|
|
void bitvec_zero(struct bitvec *bv);
|
|
unsigned bitvec_rl(const struct bitvec *bv, bool b);
|
|
unsigned bitvec_rl_curbit(struct bitvec *bv, bool b, int max_bits);
|
|
void bitvec_shiftl(struct bitvec *bv, unsigned int n);
|
|
int16_t bitvec_get_int16_msb(const struct bitvec *bv, unsigned int num_bits);
|
|
unsigned int bitvec_add_array(struct bitvec *bv, const uint32_t *array,
|
|
unsigned int array_len, bool dry_run,
|
|
unsigned int num_bits);
|
|
|
|
/*! @} */
|