234 lines
6.6 KiB
C
234 lines
6.6 KiB
C
/* B-Netz main
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*
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* (C) 2016 by Andreas Eversberg <jolly@eversberg.eu>
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* All Rights Reserved
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <getopt.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <sched.h>
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#include "../common/debug.h"
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#include "../common/timer.h"
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#include "../common/call.h"
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#include "../common/mncc_sock.h"
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#include "../common/main.h"
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#include "../common/freiton.h"
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#include "../common/besetztton.h"
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#include "bnetz.h"
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#include "dsp.h"
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#include "stations.h"
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#include "image.h"
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#include "ansage.h"
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int gfs = 2;
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int num_pilot = 0;
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const char *pilot[MAX_SENDER] = { "tone" };
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double lossdetect = 0;
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void print_help(const char *arg0)
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{
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print_help_common(arg0, "");
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/* - - */
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printf(" -g --gfs <gruppenfreisignal> | <lat>,<lon>\n");
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printf(" Gruppenfreisignal\" 1..9 | 19 | 10..18 (default = '%d')\n", gfs);
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printf(" Alternative give your coordinates of your location, to find closest\n");
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printf(" base station. (e.g. '--gfs 54.487291,9.069993') Or use '--gfs list' to\n");
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printf(" get a list of all base station locations.\n");
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printf(" -P --pilot tone | positive | negative | <file>=<on>:<off>\n");
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printf(" Send a tone, give a signal or write to a file when switching to\n");
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printf(" channel 19. (paging the phone).\n");
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printf(" 'tone', 'positive', 'negative' is sent on second audio channel.\n");
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printf(" 'tone' sends a tone whenever channel 19 is switchted.\n");
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printf(" 'positive' sends a positive signal for channel 19, else negative.\n");
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printf(" 'negative' sends a negative signal for channel 19, else positive.\n");
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printf(" Example: /sys/class/gpio/gpio17/value=1:0 writes a '1' to\n");
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printf(" /sys/class/gpio/gpio17/value to switching to channel 19 and a '0' to\n");
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printf(" switch back. (default = %s)\n", pilot[0]);
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printf(" -0 --loss <volume>\n");
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printf(" Detect loss of carrier by detecting steady noise above given volume in\n");
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printf(" percent. (disabled by default)\n");
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printf("\nstation-id: Give 5 digit station-id, you don't need to enter it for every\n");
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printf(" start of this program.\n");
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}
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static int handle_options(int argc, char **argv)
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{
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int skip_args = 0;
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char *p;
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static struct option long_options_special[] = {
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{"gfs", 1, 0, 'g'},
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{"pilot", 1, 0, 'P'},
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{"loss", 1, 0, '0'},
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{0, 0, 0, 0},
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};
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set_options_common("g:P:0:", long_options_special);
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while (1) {
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int option_index = 0, c;
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c = getopt_long(argc, argv, optstring, long_options, &option_index);
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if (c == -1)
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break;
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switch (c) {
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case 'g':
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if (!strcasecmp(optarg, "list")) {
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station_list();
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exit(0);
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}
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if ((p = strchr(optarg, ','))) {
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gfs = get_station_by_coordinates(atof(optarg), atof(p + 1));
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if (gfs == 0)
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exit(0);
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} else
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gfs = atoi(optarg);
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skip_args += 2;
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break;
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case 'P':
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OPT_ARRAY(num_pilot, pilot, strdup(optarg))
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skip_args += 2;
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break;
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case '0':
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lossdetect = atoi(optarg);
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skip_args += 2;
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break;
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default:
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opt_switch_common(c, argv[0], &skip_args);
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}
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}
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return skip_args;
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}
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int main(int argc, char *argv[])
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{
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int rc;
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int skip_args;
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const char *station_id = "";
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int i;
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/* init common tones */
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init_freiton();
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init_besetzton();
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init_ansage();
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skip_args = handle_options(argc, argv);
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argc -= skip_args;
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argv += skip_args;
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if (argc > 1) {
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station_id = argv[1];
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if (strlen(station_id) != 5) {
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printf("Given station ID '%s' does not have 5 digits\n", station_id);
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return 0;
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}
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}
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if (!num_kanal) {
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printf("No channel (\"Kanal\") is specified, I suggest channel 1.\n\n");
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print_help(argv[-skip_args]);
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return 0;
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}
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if (num_kanal == 1 && num_sounddev == 0)
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num_sounddev = 1; /* use defualt */
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if (num_kanal != num_sounddev) {
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fprintf(stdout, "You need to specify as many sound devices as you have channels.\n");
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exit(0);
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}
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if (num_kanal == 1 && num_pilot == 0)
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num_pilot = 1; /* use defualt */
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if (num_kanal != num_pilot) {
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fprintf(stdout, "You need to specify as many pilot tone settings as you have channels.\n");
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exit(0);
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}
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if (!loopback)
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print_image();
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/* init functions */
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if (use_mncc_sock) {
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rc = mncc_init("/tmp/bsc_mncc");
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if (rc < 0) {
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fprintf(stderr, "Failed to setup MNCC socket. Quitting!\n");
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return -1;
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}
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}
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dsp_init();
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bnetz_init();
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rc = call_init(station_id, call_sounddev, samplerate, latency, 5, loopback);
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if (rc < 0) {
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fprintf(stderr, "Failed to create call control instance. Quitting!\n");
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goto fail;
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}
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/* create transceiver instance */
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for (i = 0; i < num_kanal; i++) {
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rc = bnetz_create(kanal[i], sounddev[i], samplerate, cross_channels, rx_gain, gfs, do_pre_emphasis, do_de_emphasis, write_wave, read_wave, loopback, (double)lossdetect / 100.0, pilot[i]);
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if (rc < 0) {
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fprintf(stderr, "Failed to create \"Sender\" instance. Quitting!\n");
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goto fail;
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}
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printf("Base station for channel %d ready, please tune transmitter to %.3f MHz and receiver " "to %.3f MHz.\n", kanal[i], bnetz_kanal2freq(kanal[i], 0), bnetz_kanal2freq(kanal[i], 1));
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printf("To call phone, switch transmitter (using pilot signal) to %.3f MHz.\n", bnetz_kanal2freq(19, 0));
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}
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signal(SIGINT,sighandler);
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signal(SIGHUP,sighandler);
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signal(SIGTERM,sighandler);
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signal(SIGPIPE,sighandler);
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if (rt_prio > 0) {
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struct sched_param schedp;
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int rc;
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memset(&schedp, 0, sizeof(schedp));
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schedp.sched_priority = rt_prio;
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rc = sched_setscheduler(0, SCHED_RR, &schedp);
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if (rc)
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fprintf(stderr, "Error setting SCHED_RR with prio %d\n", rt_prio);
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}
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main_loop(&quit, latency, interval, NULL);
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if (rt_prio > 0) {
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struct sched_param schedp;
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memset(&schedp, 0, sizeof(schedp));
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schedp.sched_priority = 0;
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sched_setscheduler(0, SCHED_OTHER, &schedp);
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}
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fail:
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/* cleanup functions */
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call_cleanup();
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if (use_mncc_sock)
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mncc_exit();
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/* destroy transceiver instance */
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while(sender_head)
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bnetz_destroy(sender_head);
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return 0;
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}
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