192 lines
5.2 KiB
C
192 lines
5.2 KiB
C
/* A-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 <math.h>
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#include "../common/sample.h"
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#include "../common/main.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/freiton.h"
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#include "../common/besetztton.h"
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#include "anetz.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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/* settings */
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double page_gain = 1;
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int page_sequence = 0;
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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, "[-V 12] ");
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/* - - */
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printf(" -G --geo <lat>,<lon>\n");
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printf(" Give your coordinates of your location, to find closest base station.\n");
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printf(" (e.g. '--geo 51.186959,7.080194') Or use '--geo list' to get a list of\n");
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printf(" all base station locations.\n");
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printf(" -V --page-gain <dB>\n");
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printf(" Raise the gain of paging tones to compensate loss due to pre-emphasis\n");
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printf(" of the transmitter. (If you can't disable it.)\n");
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printf(" -P --page-sequence 0 | <ms>\n");
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printf(" Cycle paging tones, rather than sending simultaniously. Try 100.\n");
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printf(" (default = '%d')\n", page_sequence);
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printf(" -L --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 (last) 5 digits of station-id, you don't need to enter it\n");
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printf(" for every start of this program.\n");
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print_hotkeys_common();
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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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double gain_db;
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static struct option long_options_special[] = {
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{"geo", 1, 0, 'G'},
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{"page-gain", 1, 0, 'V'},
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{"page-sequence", 1, 0, 'P'},
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{"loss", 1, 0, 'L'},
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{0, 0, 0, 0}
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};
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set_options_common("G:V:P:L:", 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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get_station_by_coordinates(atof(optarg), atof(p + 1));
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exit(0);
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}
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fprintf(stderr, "Invalid geo parameter\n");
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exit(0);
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break;
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case 'V':
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gain_db = atof(optarg);
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page_gain = pow(10, gain_db / 20.0);
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skip_args += 2;
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break;
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case 'P':
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page_sequence = atoi(optarg);
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skip_args += 2;
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break;
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case 'L':
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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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free(long_options);
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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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/* a-netz does not use emphasis, so disable it */
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uses_emphasis = 0;
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/* init common tones */
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init_freiton();
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init_besetzton();
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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 && strlen(station_id) != 7) {
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printf("Given station ID '%s' does not have 7 or (the last) 5 digits\n", station_id);
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return 0;
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}
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if (strlen(station_id) > 5)
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station_id += strlen(station_id) - 5;
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}
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if (!num_kanal) {
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printf("No channel (\"Kanal\") is specified, I suggest channel 30.\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_audiodev == 0)
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num_audiodev = 1; /* use defualt */
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if (num_kanal != num_audiodev) {
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fprintf(stderr, "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 (!loopback)
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print_image();
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dsp_init();
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anetz_init();
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/* create transceiver instance */
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for (i = 0; i < num_kanal; i++) {
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rc = anetz_create(kanal[i], audiodev[i], samplerate, rx_gain, page_gain, page_sequence, do_pre_emphasis, do_de_emphasis, write_rx_wave, write_tx_wave, read_rx_wave, loopback, lossdetect / 100.0);
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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 on channel %d ready, please tune transmitter to %.3f MHz and receiver to %.3f MHz.\n", kanal[i], anetz_kanal2freq(kanal[i], 0) / 1e6, anetz_kanal2freq(kanal[i], 1) / 1e6);
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}
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main_common(&quit, latency, interval, NULL, station_id, 5);
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fail:
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/* destroy transceiver instance */
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while (sender_head)
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anetz_destroy(sender_head);
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return 0;
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}
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