Common library for all Osmocom projects (libosmocore, libosmogsm, libosmovty, libosmogb, libosmosim, libosmousb, ...) https://osmocom.org/projects/libosmocore
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libosmocore/src/gsm/rxlev_stat.c

94 lines
2.2 KiB

/* Rx Level statistics */
/* (C) 2010 by Harald Welte <laforge@gnumonks.org>
*
* 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.
*
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <stdint.h>
#include <osmocore/bitvec.h>
#include <osmocore/rxlev_stat.h>
int bitvec_find_bit_pos(const struct bitvec *bv, unsigned int n, enum bit_value val)
{
unsigned int i;
for (i = n; i < bv->data_len*8; i++) {
if (bitvec_get_bit_pos(bv, i) == val)
return i;
}
return -1;
}
void rxlev_stat_input(struct rxlev_stats *st, uint16_t arfcn, uint8_t rxlev)
{
struct bitvec bv;
if (rxlev >= NUM_RXLEVS)
rxlev = NUM_RXLEVS-1;
bv.data_len = NUM_ARFCNS/8;
bv.data = st->rxlev_buckets[rxlev];
bitvec_set_bit_pos(&bv, arfcn, ONE);
}
/* get the next ARFCN that has the specified Rxlev */
int16_t rxlev_stat_get_next(const struct rxlev_stats *st, uint8_t rxlev, int16_t arfcn)
{
struct bitvec bv;
if (rxlev >= NUM_RXLEVS)
rxlev = NUM_RXLEVS-1;
bv.data_len = NUM_ARFCNS/8;
if (arfcn < 0)
arfcn = -1;
bv.data = (uint8_t *) st->rxlev_buckets[rxlev];
return bitvec_find_bit_pos(&bv, arfcn+1, ONE);
}
void rxlev_stat_reset(struct rxlev_stats *st)
{
memset(st, 0, sizeof(*st));
}
void rxlev_stat_dump(const struct rxlev_stats *st)
{
int i;
for (i = NUM_RXLEVS-1; i >= 0; i--) {
int16_t arfcn = -1;
printf("ARFCN with RxLev %u: ", i);
while ((arfcn = rxlev_stat_get_next(st, i, arfcn)) >= 0) {
printf("%u ", arfcn);
}
printf("\n");
}
}