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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <getopt.h>
#include <time.h>
#include <jack/jack.h>
char * my_name;
void
show_usage(void)
{
fprintf(stderr, "\nUsage: %s [options]\n", my_name);
fprintf(stderr, "Check for jack existence, or wait, until it either quits, or gets started\n");
fprintf(stderr, "options:\n");
fprintf(stderr, " -s, --server <name> Connect to the jack server named <name>\n");
fprintf(stderr, " -w, --wait Wait for server to become available\n");
fprintf(stderr, " -q, --quit Wait until server is quit\n");
fprintf(stderr, " -c, --check Check whether server is running\n");
fprintf(stderr, " -t, --timeout Wait timeout in seconds\n");
fprintf(stderr, " -h, --help Display this help message\n");
fprintf(stderr, "For more information see http://jackaudio.org/\n");
}
int
main(int argc, char *argv[])
{
jack_client_t *client;
jack_status_t status;
jack_options_t options = JackNoStartServer;
int c;
int option_index;
char *server_name = NULL;
int wait_for_start = 0;
int wait_for_quit = 0;
int just_check = 0;
int wait_timeout = 0;
time_t start_timestamp;
struct option long_options[] = {
{ "server", 1, 0, 's' },
{ "wait", 0, 0, 'w' },
{ "quit", 0, 0, 'q' },
{ "check", 0, 0, 'c' },
{ "timeout", 1, 0, 't' },
{ "help", 0, 0, 'h' },
{ 0, 0, 0, 0 }
};
my_name = strrchr(argv[0], '/');
if (my_name == 0) {
my_name = argv[0];
} else {
my_name ++;
}
while ((c = getopt_long (argc, argv, "s:wqct:hv", long_options, &option_index)) >= 0) {
switch (c) {
case 's':
server_name = (char *) malloc (sizeof (char) * strlen(optarg));
strcpy (server_name, optarg);
options |= JackServerName;
break;
case 'w':
wait_for_start = 1;
break;
case 'q':
wait_for_quit = 1;
break;
case 'c':
just_check = 1;
break;
case 't':
wait_timeout = atoi(optarg);
break;
case 'h':
show_usage();
return 1;
break;
default:
show_usage();
return 1;
break;
}
}
/* try to open server in a loop. breaking under certein conditions */
start_timestamp = time(NULL);
while (1) {
client = jack_client_open ("wait", options, &status, server_name);
/* check for some real error and bail out */
if ((client == NULL) && !(status & JackServerFailed)) {
fprintf (stderr, "jack_client_open() failed, "
"status = 0x%2.0x\n", status);
return 1;
}
if (client == NULL) {
if (wait_for_quit) {
fprintf(stdout, "server is gone\n");
break;
}
if (just_check) {
fprintf(stdout, "not running\n");
break;
}
} else {
jack_client_close(client);
if (wait_for_start) {
fprintf(stdout, "server is available\n");
break;
}
if (just_check) {
fprintf(stdout, "running\n");
break;
}
}
if (wait_timeout) {
if ((time(NULL) - start_timestamp) > wait_timeout) {
fprintf(stdout, "timeout\n");
exit(EXIT_FAILURE);
}
}
// Wait a second, and repeat
#ifdef WIN32
Sleep(1*1000);
#else
sleep(1);
#endif
}
exit(0);
}
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