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Diffstat (limited to 'src/lib/gsm_receiver_config.h')
-rw-r--r--src/lib/gsm_receiver_config.h164
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diff --git a/src/lib/gsm_receiver_config.h b/src/lib/gsm_receiver_config.h
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--- a/src/lib/gsm_receiver_config.h
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-/* -*- c++ -*- */
-/*
- * @file
- * @author Piotr Krysik <pkrysik@stud.elka.pw.edu.pl>
- * @section LICENSE
- *
- * GNU Radio 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 3, or (at your option)
- * any later version.
- *
- * GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street,
- * Boston, MA 02110-1301, USA.
- *
- * @section DESCRIPTION
- * This file contains classes which define gsm_receiver configuration
- * and the burst_counter which is used to store internal state of the receiver
- * when it's synchronized
- */
-#ifndef INCLUDED_GSM_RECEIVER_CONFIG_H
-#define INCLUDED_GSM_RECEIVER_CONFIG_H
-
-#include <vector>
-#include <algorithm>
-#include <math.h>
-#include <stdint.h>
-#include <gsm_constants.h>
-
-class multiframe_configuration
-{
- private:
- multiframe_type d_type;
- std::vector<burst_type> d_burst_types;
- public:
- multiframe_configuration() {
- d_type = unknown;
- fill(d_burst_types.begin(), d_burst_types.end(), empty);
- }
-
- ~multiframe_configuration() {}
-
- void set_type(multiframe_type type) {
- if (type == multiframe_26) {
- d_burst_types.resize(26);
- } else {
- d_burst_types.resize(51);
- }
-
- d_type = type;
- }
-
- void set_burst_type(int nr, burst_type type) {
- d_burst_types[nr] = type;
- }
-
- multiframe_type get_type() {
- return d_type;
- }
-
- burst_type get_burst_type(int nr) {
- return d_burst_types[nr];
- }
-};
-
-class burst_counter
-{
- private:
- const int d_OSR;
- uint32_t d_t1, d_t2, d_t3, d_timeslot_nr;
- double d_offset_fractional;
- double d_offset_integer;
- public:
- burst_counter(int osr):
- d_OSR(osr),
- d_t1(0),
- d_t2(0),
- d_t3(0),
- d_timeslot_nr(0),
- d_offset_fractional(0.0),
- d_offset_integer(0.0) {
- }
-
- burst_counter(int osr, uint32_t t1, uint32_t t2, uint32_t t3, uint32_t timeslot_nr):
- d_OSR(osr),
- d_t1(t1),
- d_t2(t2),
- d_t3(t3),
- d_timeslot_nr(timeslot_nr),
- d_offset_fractional(0.0),
- d_offset_integer(0.0) {
- double first_sample_position = (get_frame_nr() * 8 + timeslot_nr) * TS_BITS;
- d_offset_integer = floor(first_sample_position);
- d_offset_fractional = first_sample_position - floor(first_sample_position);
- }
-
- burst_counter & operator++(int);
- void set(uint32_t t1, uint32_t t2, uint32_t t3, uint32_t timeslot_nr);
-
- uint32_t get_t1() {
- return d_t1;
- }
-
- uint32_t get_t2() {
- return d_t2;
- }
-
- uint32_t get_t3() {
- return d_t3;
- }
-
- uint32_t get_timeslot_nr() {
- return d_timeslot_nr;
- }
-
- uint32_t get_frame_nr() {
- return (51 * 26 * d_t1) + (51 * (((d_t3 + 26) - d_t2) % 26)) + d_t3;
- }
-
- uint32_t get_frame_nr_mod() {
- return (d_t1 << 11) + (d_t3 << 5) + d_t2;
- }
-
- unsigned get_offset() {
- return (unsigned)d_offset_integer;
- }
-};
-
-class channel_configuration
-{
- private:
- multiframe_configuration d_timeslots_descriptions[TS_PER_FRAME];
- public:
- channel_configuration() {
- for (int i = 0; i < TS_PER_FRAME; i++) {
- d_timeslots_descriptions[i].set_type(unknown);
- }
- }
-
- void set_multiframe_type(int timeslot_nr, multiframe_type type) {
- d_timeslots_descriptions[timeslot_nr].set_type(type);
- }
-
- void set_burst_types(int timeslot_nr, const unsigned mapping[], unsigned mapping_size, burst_type b_type) {
- unsigned i;
- for (i = 0; i < mapping_size; i++) {
- d_timeslots_descriptions[timeslot_nr].set_burst_type(mapping[i], b_type);
- }
- }
-
- void set_single_burst_type(int timeslot_nr, int burst_nr, burst_type b_type) {
- d_timeslots_descriptions[timeslot_nr].set_burst_type(burst_nr, b_type);
- }
-
- burst_type get_burst_type(burst_counter burst_nr);
-};
-
-#endif /* INCLUDED_GSM_RECEIVER_CONFIG_H */
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