** Warning: Cannot open xref database.
1 /*
2 * freewheel - start/stop JACK "freewheeling" mode
3 *
4 * Copyright (C) 2003 Paul Davis.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21 #include <stdio.h>
22 #include <errno.h>
23 #include <unistd.h>
24 #include <signal.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <jack/jack.h>
28 #include <jack/transport.h>
29
30 char *package; /* program name */
31 jack_client_t *client;
32 int onoff;
33
34 void jack_shutdown(void *arg)
35 {
36 fprintf(stderr, "JACK shut down, exiting ...\n");
37 exit(1);
38 }
39
40 void signal_handler(int sig)
41 {
42 jack_client_close(client);
43 fprintf(stderr, "signal received, exiting ...\n");
44 exit(0);
45 }
46
47 void parse_arguments(int argc, char *argv[])
48 {
49 if (argc < 2) {
50 fprintf(stderr, "usage: %s y|n\n", package);
51 exit(9);
52 }
53
54 if (argv[1][0] == 'y' || argv[1][0] == 'Y' || argv[1][0] == '1') {
55 onoff = 1;
56 } else {
57 onoff = 0;
58 }
59 }
60
61 int
62 main (int argc, char *argv[])
63 {
64 int rc;
65
66 parse_arguments (argc, argv);
67
68 /* become a JACK client */
69 if ((client = jack_client_new ("freewheel")) == 0) {
70 fprintf (stderr, "JACK server not running?\n");
71 exit(1);
72 }
73
74 signal (SIGQUIT, signal_handler);
75 signal (SIGTERM, signal_handler);
76 signal (SIGHUP, signal_handler);
77 signal (SIGINT, signal_handler);
78
79 jack_on_shutdown (client, jack_shutdown, 0);
80
81 if (jack_set_freewheel (client, onoff)) {
82 fprintf (stderr, "failed to reset freewheel mode\n");
83 }
84
85 jack_client_close(client);
86
87 return rc;
88 }
89
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