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1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <unistd.h>
4 #include <string.h>
5 #include <getopt.h>
6
7 #include <config.h>
8
9 #include <jack/jack.h>
10
11 char * my_name;
12
13 void
14 show_version (void)
15 {
16 fprintf (stderr, "%s: JACK Audio Connection Kit version " VERSION "\n",
17 my_name);
18 }
19
20 void
21 show_usage (void)
22 {
23 show_version ();
24 fprintf (stderr, "\nUsage: %s [options]\n", my_name);
25 fprintf (stderr, "List active Jack ports, and optionally display extra information.\n\n");
26 fprintf (stderr, "Display options:\n");
27 fprintf (stderr, " -c, --connections List connections to/from each port\n");
28 fprintf (stderr, " -l, --latency Display total latency in frames at each port\n");
29 fprintf (stderr, " -p, --properties Display port properties. Output may include:\n"
30 " input|output, can-monitor, physical, terminal\n\n");
31 fprintf (stderr, " -h, --help Display this help message\n");
32 fprintf (stderr, " --version Output version information and exit\n\n");
33 fprintf (stderr, "For more information see http://jackit.sourceforge.net/\n");
34 }
35
36 int
37 main (int argc, char *argv[])
38 {
39 jack_client_t *client;
40 const char **ports, **connections;
41 unsigned int i, j;
42 int show_con = 0;
43 int show_latency = 0;
44 int show_properties = 0;
45 int c;
46 int option_index;
47
48 struct option long_options[] = {
49 { "connections", 0, 0, 'c' },
50 { "latency", 0, 0, 'l' },
51 { "properties", 0, 0, 'p' },
52 { "help", 0, 0, 'h' },
53 { "version", 0, 0, 'v' },
54 { 0, 0, 0, 0 }
55 };
56
57 my_name = strrchr(argv[0], '/');
58 if (my_name == 0) {
59 my_name = argv[0];
60 } else {
61 my_name ++;
62 }
63
64 while ((c = getopt_long (argc, argv, "clphv", long_options, &option_index)) >= 0) {
65 switch (c) {
66 case 'c':
67 show_con = 1;
68 break;
69 case 'l':
70 show_latency = 1;
71 break;
72 case 'p':
73 show_properties = 1;
74 break;
75 case 'h':
76 show_usage ();
77 return 1;
78 break;
79 case 'v':
80 show_version ();
81 return 1;
82 break;
83 default:
84 show_usage ();
85 return 1;
86 break;
87 }
88 }
89
90 /* try to become a client of the JACK server */
91
92 if ((client = jack_client_new ("lsp")) == 0) {
93 fprintf (stderr, "jack server not running?\n");
94 return 1;
95 }
96
97 ports = jack_get_ports (client, NULL, NULL, 0);
98
99 for (i = 0; ports[i]; ++i) {
100 printf ("%s\n", ports[i]);
101 if (show_con) {
102 if ((connections = jack_port_get_all_connections (client, jack_port_by_name(client, ports[i]))) != 0) {
103 for (j = 0; connections[j]; j++) {
104 printf (" %s\n", connections[j]);
105 }
106 free (connections);
107 }
108 }
109 if (show_latency) {
110 jack_port_t *port = jack_port_by_name (client, ports[i]);
111 if (port) {
112 printf (" latency = %" PRIu32 " frames\n",
113 jack_port_get_total_latency (client, port));
114 free (port);
115 }
116 }
117 if (show_properties) {
118 jack_port_t *port = jack_port_by_name (client, ports[i]);
119 if (port) {
120 int flags = jack_port_flags (port);
121 printf (" properties: ");
122 if (flags & JackPortIsInput) {
123 fputs ("input,", stdout);
124 }
125 if (flags & JackPortIsOutput) {
126 fputs ("output,", stdout);
127 }
128 if (flags & JackPortCanMonitor) {
129 fputs ("can-monitor,", stdout);
130 }
131 if (flags & JackPortIsPhysical) {
132 fputs ("physical,", stdout);
133 }
134 if (flags & JackPortIsTerminal) {
135 fputs ("terminal,", stdout);
136 }
137 putc ('\n', stdout);
138 }
139 }
140 }
141 jack_client_close (client);
142 exit (0);
143 }
144
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