330 lines
10 KiB
C
330 lines
10 KiB
C
/* C-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 "../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 "cnetz.h"
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#include "database.h"
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#include "sysinfo.h"
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#include "dsp.h"
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#include "telegramm.h"
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#include "image.h"
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#include "ansage.h"
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/* settings */
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int num_chan_type = 0;
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enum cnetz_chan_type chan_type[MAX_SENDER] = { CHAN_TYPE_OGK_SPK };
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int measure_speed = 0;
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double clock_speed[2] = { 0.0, 0.0 };
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int set_clock_speed = 0;
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const char *flip_polarity = "auto";
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double noise = 0.0;
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int ms_power = 0; /* 0..3 */
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int auth = 0;
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int voice_deviation = 1;
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void print_help(const char *arg0)
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{
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print_help_common(arg0, "[-M] -S <rx ppm>,<tx ppm> -p -d ");
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/* - - */
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printf(" -T --channel-type <channel type> | list\n");
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printf(" Give channel type, use 'list' to get a list. (default = '%s')\n", chan_type_short_name(chan_type[0]));
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printf(" -M --measure-speed\n");
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printf(" Measures clock speed. THIS IS REQUIRED! See documentation!\n");
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printf(" -S --clock-speed <rx ppm>,<tx ppm>\n");
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printf(" Correct speed of sound card's clock. Use '-M' to measure speed for\n");
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printf(" some hours after temperature has settled. The use these results to\n");
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printf(" correct signal processing speed. After adjustment, the clock must match\n");
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printf(" +- 1ppm or better. CORRECTING CLOCK SPEED IS REQUIRED! See\n");
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printf(" documentation on how to measure correct value.\n");
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printf(" -F --flip-polarity no | yes | auto\n");
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printf(" Flip polarity of transmitted FSK signal. If yes, the sound card\n");
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printf(" generates a negative signal rather than a positive one. If auto, the\n");
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printf(" base station generates two virtual base stations with both polarities.\n");
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printf(" Once a mobile registers, the correct polarity is selected and used.\n");
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printf(" (default = %s)\n", flip_polarity);
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printf(" -N --noise 0.0 .. 1.0 (default = %.1f)\n", noise);
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printf(" Between frames on OgK, send noise at given level. Use 0.0 for Silence.\n");
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printf(" -P --ms-power <power level>\n");
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printf(" Give power level of the mobile station 0..3. (default = '%d')\n", ms_power);
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printf(" 0 = 50-125 mW; 1 = 0.5-1 W; 2 = 4-8 W; 3 = 10-20 W\n");
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printf(" -A --authentication\n");
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printf(" Enable authentication on the base station. Since we cannot\n");
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printf(" authenticate, because we don't know the secret key and the algorithm,\n");
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printf(" we just accept any card. With this we get the vendor IDs of the phone.\n");
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printf(" -V --voice-deviation\n");
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printf(" For some unknown reason, Siemens C5 use double deviation for voice.\n");
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printf(" This option raises audio level on TX and lowers on RX.\n");
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printf("\nstation-id: Give 7 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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print_hotkeys_common();
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printf("Press 'i' key to dump list of currently attached subscribers.\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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int rc;
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const char *p;
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static struct option long_options_special[] = {
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{"channel-type", 1, 0, 'T'},
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{"measure-speed", 0, 0, 'M'},
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{"clock-speed", 1, 0, 'S'},
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{"flip-polarity", 1, 0, 'F'},
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{"noise", 1, 0, 'N'},
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{"ms-power", 1, 0, 'P'},
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{"authentication", 0, 0, 'A'},
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{"voice-deviation", 0, 0, 'V'},
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{0, 0, 0, 0}
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};
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set_options_common("T:MS:F:N:P:AV", 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 'T':
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if (!strcmp(optarg, "list")) {
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cnetz_channel_list();
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exit(0);
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}
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rc = cnetz_channel_by_short_name(optarg);
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if (rc < 0) {
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fprintf(stderr, "Error, channel type '%s' unknown. Please use '-t list' to get a list. I suggest to use the default.\n", optarg);
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exit(0);
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}
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OPT_ARRAY(num_chan_type, chan_type, rc)
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skip_args += 2;
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break;
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case 'M':
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measure_speed = 1;
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skip_args++;
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break;
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case 'S':
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p = strchr(optarg, ',');
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if (!p) {
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fprintf(stderr, "Illegal clock speed, use two values, seperated by comma and no spaces!\n");
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exit(0);
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}
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clock_speed[0] = strtold(optarg, NULL);
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clock_speed[1] = strtold(p + 1, NULL);
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set_clock_speed = 1;
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skip_args += 2;
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break;
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case 'F':
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if (!strcasecmp(optarg, "no"))
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flip_polarity = "no";
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else if (!strcasecmp(optarg, "yes"))
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flip_polarity = "yes";
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else if (!strcasecmp(optarg, "auto"))
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flip_polarity = "auto";
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else {
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fprintf(stderr, "Given polarity '%s' is illegal, see help!\n", optarg);
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exit(0);
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}
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skip_args += 2;
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break;
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case 'N':
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noise = strtold(optarg, NULL);
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skip_args += 2;
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break;
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case 'P':
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ms_power = atoi(optarg);
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if (ms_power > 3)
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ms_power = 3;
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if (ms_power < 0)
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ms_power = 0;
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skip_args += 2;
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break;
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case 'A':
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auth = 1;
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skip_args += 1;
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break;
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case 'V':
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voice_deviation = 2;
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skip_args += 1;
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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 mandatory = 0;
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int polarity;
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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) != 7) {
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printf("Given station ID '%s' does not have 7 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 %d.\n\n", CNETZ_OGK_KANAL);
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mandatory = 1;
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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(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 (num_kanal == 1 && num_chan_type == 0)
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num_chan_type = 1; /* use defualt */
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if (num_kanal != num_chan_type) {
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fprintf(stderr, "You need to specify as many channel types as you have channels.\n");
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exit(0);
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}
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if (!set_clock_speed && !measure_speed) {
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printf("No clock speed given. You need to measure clock using '-M' and later correct clock using '-S <rx ppm>,<tx ppm>'. See documentation for help!\n\n");
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mandatory = 1;
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}
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if (mandatory) {
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print_help(argv[-skip_args]);
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return 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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scrambler_init();
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init_sysinfo();
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dsp_init();
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rc = init_telegramm();
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if (rc < 0) {
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fprintf(stderr, "Error in Telegramm structure. Quitting!\n");
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goto fail;
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}
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init_coding();
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cnetz_init();
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rc = call_init(station_id, call_sounddev, samplerate, latency, 7, 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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/* check for mandatory OgK */
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for (i = 0; i < num_kanal; i++) {
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if (chan_type[i] == CHAN_TYPE_OGK || chan_type[i] == CHAN_TYPE_OGK_SPK)
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break;
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}
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if (i == num_kanal) {
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fprintf(stderr, "You must define at least one OgK (control) or OgK/SPK (control/speech) channel type. Quitting!\n");
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goto fail;
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}
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/* check for mandatory OgK */
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for (i = 0; i < num_kanal; i++) {
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if (chan_type[i] == CHAN_TYPE_SPK || chan_type[i] == CHAN_TYPE_OGK_SPK)
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break;
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}
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if (i == num_kanal)
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fprintf(stderr, "You did not define any SpK (speech) channel. You will not be able to make any call.\n");
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if (!do_pre_emphasis || !do_de_emphasis) {
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fprintf(stderr, "*******************************************************************************\n");
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fprintf(stderr, "I strongly suggest to let me do pre- and de-emphasis (options -p -d)!\n");
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fprintf(stderr, "Use a transmitter/receiver without emphasis and let me do that!\n");
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fprintf(stderr, "Because carrier FSK signaling and scrambled voice (default) does not use\n");
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fprintf(stderr, "emphasis, I like to control emphasis by myself for best results.\n");
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fprintf(stderr, "*******************************************************************************\n");
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}
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polarity = 0; /* auto */
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if (!strcmp(flip_polarity, "no"))
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polarity = 1; /* positive */
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if (!strcmp(flip_polarity, "yes"))
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polarity = -1; /* negative */
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/* create transceiver instance */
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for (i = 0; i < num_kanal; i++) {
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rc = cnetz_create(kanal[i], chan_type[i], sounddev[i], samplerate, cross_channels, rx_gain, auth, ms_power, (i == 0) ? measure_speed : 0, clock_speed, polarity, noise, do_pre_emphasis, do_de_emphasis, write_rx_wave, write_tx_wave, read_rx_wave, loopback);
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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], cnetz_kanal2freq(kanal[i], 0), cnetz_kanal2freq(kanal[i], 1));
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}
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main_loop(&quit, latency, interval, NULL);
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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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flush_db();
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/* destroy transceiver instance */
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while (sender_head)
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cnetz_destroy(sender_head);
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return 0;
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}
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