example-clients/alias.c

   1 /*
   2     This program is free software; you can redistribute it and/or modify
   3     it under the terms of the GNU General Public License as published by
   4     the Free Software Foundation; either version 2 of the License, or
   5     (at your option) any later version.
   6
   7     This program is distributed in the hope that it will be useful,
   8     but WITHOUT ANY WARRANTY; without even the implied warranty of
   9     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10     GNU General Public License for more details.
  11
  12     You should have received a copy of the GNU General Public License
  13     along with this program; if not, write to the Free Software
  14     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  15 */
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <unistd.h>
  20 #include <string.h>
  21 #include <getopt.h>
  22 #include <jack/jack.h>
  23 //#include <config.h>
  24
  25 char * my_name;
  26
  27 void
  28 show_version (void)
  29 {
  30         //fprintf (stderr, "%s: JACK Audio Connection Kit version " VERSION "\n", my_name);
  31 }
  32
  33 void
  34 show_usage (void)
  35 {
  36         show_version ();
  37         fprintf (stderr, "\nUsage: %s [options] portname alias\n", my_name);
  38         fprintf (stderr, "List active Jack ports, and optionally display extra information.\n\n");
  39         fprintf (stderr, "Display options:\n");
  40         fprintf (stderr, "        -u, --unalias         remove `alias' as an alias for `port'\n");
  41         fprintf (stderr, "        -h, --help            Display this help message\n");
  42         fprintf (stderr, "        --version             Output version information and exit\n\n");
  43         fprintf (stderr, "For more information see http://jackaudio.org/\n");
  44 }
  45
  46 int
  47 main (int argc, char *argv[])
  48 {
  49         jack_client_t *client;
  50         jack_status_t status;
  51         char* portname;
  52         char* alias;
  53         int unset = 0;
  54         int ret;
  55         int c;
  56         int option_index;
  57         extern int optind;
  58         jack_port_t* port;
  59
  60         struct option long_options[] = {
  61                 { "unalias", 0, 0, 'u' },
  62                 { "help", 0, 0, 'h' },
  63                 { "version", 0, 0, 'v' },
  64                 { 0, 0, 0, 0 }
  65         };
  66
  67         if (argc < 3) {
  68                 show_usage ();
  69                 return 1;
  70         }
  71
  72         my_name = strrchr(argv[0], '/');
  73         if (my_name == 0) {
  74                 my_name = argv[0];
  75         } else {
  76                 my_name ++;
  77         }
  78
  79         while ((c = getopt_long (argc, argv, "uhv", long_options, &option_index)) >= 0) {
  80                 switch (c) {
  81                 case 'u':
  82                         unset = 1;
  83                         break;
  84                 case 'h':
  85                         show_usage ();
  86                         return 1;
  87                         break;
  88                 case 'v':
  89                         show_version ();
  90                         return 1;
  91                         break;
  92                 default:
  93                         show_usage ();
  94                         return 1;
  95                         break;
  96                 }
  97         }
  98
  99         portname = argv[optind++];
 100         alias = argv[optind];
 101
 102         /* Open a client connection to the JACK server.  Starting a
 103          * new server only to list its ports seems pointless, so we
 104          * specify JackNoStartServer. */
 105         //JOQ: need a new server name option
 106
 107         client = jack_client_open ("lsp", JackNoStartServer, &status);
 108
 109         if (client == NULL) {
 110                 if (status & JackServerFailed) {
 111                         fprintf (stderr, "JACK server not running\n");
 112                 } else {
 113                         fprintf (stderr, "jack_client_open() failed, "
 114                                  "status = 0x%2.0x\n", status);
 115                 }
 116                 return 1;
 117         }
 118
 119         if ((port = jack_port_by_name (client, portname)) == 0) {
 120                 fprintf (stderr, "No port named \"%s\"\n", portname);
 121                 return 1;
 122         }
 123
 124         if (!unset) {
 125                 ret = jack_port_set_alias (port, alias);
 126         } else {
 127                 ret = jack_port_unset_alias (port, alias);
 128         }
 129
 130         jack_client_close (client);
 131
 132         return ret;
 133
 134 }