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osmo-cc-alsa-endpoint/src/telephone/main.c

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/* osmo-cc-alsa-endpoint main
*
* (C) 2020 by Andreas Eversberg <jolly@eversberg.eu>
* All Rights Reserved
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <stdint.h>
#include <stdlib.h>
#include <termios.h>
#include <sched.h>
#include "../libdebug/debug.h"
#include "../liboptions/options.h"
#include "../libg711/g711.h"
#include "telephone.h"
telephone_t *telephone_ep = NULL;
int num_kanal = 1;
static const char *name = "alsa";
static const char *audiodev = NULL;
static int samplerate = 48000;
static int latency = 50;
static int rt_prio = 1;
static const char *caller_id = "";
static int early_audio = 0;
static int autoalert = 0, autoanswer = 1;
#define MAX_CC_ARGS 1024
static int cc_argc = 0;
static const char *cc_argv[MAX_CC_ARGS];
static void print_usage(const char *app)
{
printf("Usage: %s -a hw:<card>,<device> [<options>] [dialing]\n", app);
}
static void print_help()
{
/* - - */
printf(" -h --help\n");
printf(" This help\n");
printf(" --config [~/]<path to config file>\n");
printf(" Give a config file to use. If it starts with '~/', path is at home dir.\n");
printf(" Each line in config file is one option, '-' or '--' must not be given!\n");
printf(" -v --verbose <level> | <level>,<category>[,<category>[,...]] | list\n");
printf(" Use 'list' to get a list of all levels and categories\n");
printf(" Verbose level: digit of debug level (default = '%d')\n", debuglevel);
printf(" Verbose level+category: level digit followed by one or more categories\n");
printf(" -> If no category is specified, all categories are selected\n");
printf(" -n --name <interface name>\n");
printf(" Give name of this interface. It will be sent in each call towards\n");
printf(" -I --caller-id <caller id>\n");
printf(" What caller ID to send on calls made from terminal. (default = '%s')\n", caller_id);
printf(" -A --auto alerting | answer | off\n");
printf(" An incoming call can be responded automatically with an alerting or an\n");
printf(" answer, or not be responded automatically. (default = 'answer')\n");
printf(" -E --early-audio\n");
printf(" Send early audio when call is not yet connected. Must be used in\n");
printf(" conjunction with --auto\n");
printf(" -a --audio-device hw:<card>,<device>\n");
printf(" Sound card and device number (default = '%s')\n", audiodev);
printf(" -s --samplerate <rate>\n");
printf(" Sample rate of sound device (default = '%d')\n", samplerate);
printf(" -b --buffer <ms>\n");
printf(" How many milliseconds are processed in advance (default = '%d')\n", latency);
printf(" -r --realtime <prio>\n");
printf(" Set prio: 0 to disable, 99 for maximum (default = %d)\n", rt_prio);
printf(" -C --cc \"<osmo-cc arg>\" [--cc ...]\n");
printf(" Pass arguments to Osmo-CC endpoint. Use '-cc help' for description.\n");
}
static void add_options(void)
{
option_add('h', "help", 0);
option_add('v', "verbose", 1);
option_add('n', "name", 1);
option_add('I', "caller-id", 1);
option_add('A', "auto", 1);
option_add('E', "early-audio", 0);
option_add('a', "audio-device", 1);
option_add('s', "samplerate", 1);
option_add('b', "buffer", 1);
option_add('r', "realtime", 1);
option_add('C', "cc", 1);
}
static int handle_options(int short_option, int argi, char **argv)
{
int rc;
switch (short_option) {
case 'h':
print_usage(argv[0]);
print_help();
return 0;
case 'v':
if (!strcasecmp(argv[argi], "list")) {
debug_list_cat();
return 0;
}
rc = parse_debug_opt(argv[argi]);
if (rc < 0) {
fprintf(stderr, "Failed to parse debug option, please use -h for help.\n");
return rc;
}
break;
case 'n':
name = options_strdup(argv[argi]);
break;
case 'I':
caller_id = options_strdup(argv[argi]);
break;
case 'A':
if (!strcasecmp(argv[argi], "alerting")) {
autoalert = 1;
autoanswer = 0;
} else
if (!strcasecmp(argv[argi], "answer")) {
autoalert = 0;
autoanswer = 1;
} else
if (!strcasecmp(argv[argi], "off")) {
autoalert = 0;
autoanswer = 0;
} else {
fprintf(stderr, "Unknown parameter '%s', please use -h for help.\n", argv[argi]);
return -EINVAL;
}
break;
case 'E':
early_audio = 1;
break;
case 'a':
audiodev = options_strdup(argv[argi]);
break;
case 's':
samplerate = atoi(argv[argi]);
break;
case 'b':
latency = atoi(argv[argi]);
break;
case 'r':
rt_prio = atoi(argv[argi]);
break;
case 'C':
if (!strcasecmp(argv[argi], "help")) {
osmo_cc_help();
return 0;
}
if (cc_argc == MAX_CC_ARGS) {
fprintf(stderr, "Too many osmo-cc args!\n");
break;
}
cc_argv[cc_argc++] = options_strdup(argv[argi]);
break;
default:
return -EINVAL;
}
return 1;
}
static int quit = 0;
void sighandler(int sigset)
{
if (sigset == SIGHUP || sigset == SIGPIPE)
return;
fprintf(stderr, "\nSignal %d received.\n", sigset);
quit = 1;
}
static int get_char()
{
struct timeval tv = {0, 0};
fd_set fds;
char c = 0;
int __attribute__((__unused__)) rc;
FD_ZERO(&fds);
FD_SET(0, &fds);
select(0+1, &fds, NULL, NULL, &tv);
if (FD_ISSET(0, &fds)) {
rc = read(0, &c, 1);
return c;
} else
return -1;
}
int main(int argc, char *argv[])
{
int argi, rc;
const char *dialing = "";
struct termios term, term_orig;
char c;
g711_init();
telephone_ep = telephone_create();
if (!telephone_ep)
goto error;
cc_argv[cc_argc++] = options_strdup("remote auto");
/* handle options / config file */
add_options();
rc = options_config_file(argc, argv, "~/.osmocom/alsa/alsa.conf", handle_options);
if (rc < 0)
return 0;
argi = options_command_line(argc, argv, handle_options);
if (argi <= 0)
return argi;
if (argi < argc)
dialing = argv[argi];
rc = ui_init(dialing, autoalert, autoanswer);
if (rc) {
PDEBUG(DTEL, DEBUG_ERROR, "UI initializing failed!\n");
goto error;
}
rc = telephone_init(telephone_ep, name, caller_id, OSMO_CC_LOCATION_USER, early_audio, audiodev, samplerate, samplerate * latency / 1000);
if (rc) {
PDEBUG(DTEL, DEBUG_ERROR, "Endpoint initializing failed!\n");
goto error;
}
rc = osmo_cc_new(&telephone_ep->cc_ep, OSMO_CC_VERSION, name, OSMO_CC_LOCATION_USER, cc_message, NULL, telephone_ep, cc_argc, cc_argv);
if (rc < 0)
goto error;
/* real time priority */
if (rt_prio > 0) {
struct sched_param schedp;
int rc;
memset(&schedp, 0, sizeof(schedp));
schedp.sched_priority = rt_prio;
rc = sched_setscheduler(0, SCHED_RR, &schedp);
if (rc)
fprintf(stderr, "Error setting SCHED_RR with prio %d\n", rt_prio);
}
/* prepare terminal */
tcgetattr(0, &term_orig);
term = term_orig;
term.c_lflag &= ~(ISIG|ICANON|ECHO);
term.c_cc[VMIN]=1;
term.c_cc[VTIME]=2;
tcsetattr(0, TCSANOW, &term);
signal(SIGINT, sighandler);
signal(SIGHUP, sighandler);
signal(SIGTERM, sighandler);
signal(SIGPIPE, sighandler);
while (!quit) {
int w;
c = get_char();
if (c == 3) {
/* quit */
if (clear_console_text)
clear_console_text();
printf("CTRL+c received, quitting!\n");
quit = 1;
continue;
}
process_timer();
alsa_work(telephone_ep);
rtp_work(telephone_ep);
do {
w = 0;
w |= osmo_cc_handle();
w |= ui_work(telephone_ep, c);
c = 0;
} while (w);
usleep(1000);
}
signal(SIGINT, SIG_DFL);
signal(SIGTSTP, SIG_DFL);
signal(SIGHUP, SIG_DFL);
signal(SIGTERM, SIG_DFL);
signal(SIGPIPE, SIG_DFL);
/* reset terminal */
tcsetattr(0, TCSANOW, &term_orig);
/* reset real time prio */
if (rt_prio > 0) {
struct sched_param schedp;
memset(&schedp, 0, sizeof(schedp));
schedp.sched_priority = 0;
sched_setscheduler(0, SCHED_OTHER, &schedp);
}
error:
if (telephone_ep) {
osmo_cc_delete(&telephone_ep->cc_ep);
telephone_destroy(telephone_ep);
}
options_free();
return 0;
}
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