Initial commit - gsm-receiver with removed quick hacks
diff --git a/lib/receiver_config.h b/lib/receiver_config.h
new file mode 100644
index 0000000..b7ba43a
--- /dev/null
+++ b/lib/receiver_config.h
@@ -0,0 +1,164 @@
+/* -*- 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 */