** Warning: Cannot open xref database.
1 /*
2 * bufsize.c -- change JACK buffer size.
3 *
4 * Copyright (C) 2003 Jack O'Quin.
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 jack_nframes_t nframes;
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
50 /* basename $0 */
51 package = strrchr(argv[0], '/');
52 if (package == 0)
53 package = argv[0];
54 else
55 package++;
56
57 if (argc < 2) {
58 fprintf(stderr, "usage: %s <bufsize>\n", package);
59 exit(9);
60 }
61
62 nframes = strtoul(argv[1], NULL, 0);
63 if (errno == ERANGE) {
64 fprintf(stderr, "%s: invalid buffer size: %s\n",
65 package, argv[1]);
66 exit(2);
67 }
68 }
69
70 int main(int argc, char *argv[])
71 {
72 int rc;
73
74 parse_arguments(argc, argv);
75
76 /* become a JACK client */
77 if ((client = jack_client_new(package)) == 0) {
78 fprintf(stderr, "JACK server not running?\n");
79 exit(1);
80 }
81
82 signal(SIGQUIT, signal_handler);
83 signal(SIGTERM, signal_handler);
84 signal(SIGHUP, signal_handler);
85 signal(SIGINT, signal_handler);
86
87 jack_on_shutdown(client, jack_shutdown, 0);
88
89 rc = jack_set_buffer_size(client, nframes);
90 if (rc)
91 fprintf(stderr, "jack_set_buffer_size(): %s\n", strerror(rc));
92
93 jack_client_close(client);
94
95 return rc;
96 }
97
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