| /* |
| * Copyright (C) 2015 by Sysmocom s.f.m.c. GmbH |
| * |
| * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| */ |
| #pragma once |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| #include <osmocom/gsm/gsm_utils.h> |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #include <time.h> |
| #include <stdint.h> |
| |
| #define FN_UNSET 0xFFFFFFFF |
| |
| static inline int msecs_to_frames(int msecs) { |
| return (msecs * (1024 * 1000 / 4615)) / 1024; |
| } |
| |
| static inline uint32_t next_fn(uint32_t fn, uint32_t offset) |
| { |
| return (fn + offset) % GSM_MAX_FN; |
| } |
| |
| static inline void csecs_to_timespec(unsigned csecs, struct timespec *ts) { |
| ts->tv_sec = csecs / 100; |
| ts->tv_nsec = (csecs % 100) * 10000000; |
| } |
| |
| static inline uint32_t rts_next_fn(uint32_t rts_fn, uint8_t block_nr) |
| { |
| uint32_t fn = rts_fn + 4; |
| if ((block_nr % 3) == 2) |
| fn++; |
| fn = fn % GSM_MAX_FN; |
| return fn; |
| } |
| |
| static inline unsigned fn2bn(unsigned fn) |
| { |
| return (fn % 52) / 4; |
| } |
| |
| static inline bool fn_valid(uint32_t fn) |
| { |
| uint32_t f = fn % 13; |
| return f == 0 || f == 4 || f == 8; |
| } |
| |
| static inline unsigned fn_next_block(unsigned fn) |
| { |
| unsigned bn = fn2bn(fn) + 1; |
| fn = fn - (fn % 52); |
| fn += bn * 4 + bn / 3; |
| return fn % GSM_MAX_FN; |
| } |
| |
| #ifdef __cplusplus |
| template <typename T> |
| inline unsigned int pcu_bitcount(T x) |
| { |
| unsigned int count = 0; |
| for (count = 0; x; count += 1) |
| x &= x - 1; |
| |
| return count; |
| } |
| #endif |
| |
| static inline uint8_t pcu_lsb(uint8_t x) |
| { |
| return x & -x; |
| } |
| |
| /* Used to store a C++ class in a llist used by C code */ |
| struct llist_item { |
| struct llist_head list; /* item used by llist */ |
| void *entry; |
| }; |