example-clients/ipunload.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 <string.h>
  18 #include <stdlib.h>
  19 #include <stdio.h>
  20 #include <jack/jack.h>
  21 #include <jack/intclient.h>
  22
  23 int
  24 main (int argc, char *argv[])
  25 {
  26         char *my_name;
  27         char *client_name;
  28         jack_client_t *client;
  29         jack_status_t status;
  30         jack_intclient_t intclient;
  31
  32         /* validate args */
  33         if ((argc < 2) || (argc > 3)) {
  34                 fprintf (stderr, "usage: %s client-name [ server-name ]]\n",
  35                          argv[0]);
  36                 return 1;
  37         }
  38
  39         /* use `basename $0` for my own client name */
  40         my_name = strrchr(argv[0], '/');
  41         if (my_name == 0) {
  42                 my_name = argv[0];
  43         } else {
  44                 my_name++;
  45         }
  46
  47         /* first, become a JACK client */
  48         if (argc > 2) {
  49                 client = jack_client_open (my_name,
  50                                            (JackServerName|JackNoStartServer),
  51                                            &status, argv[2]);
  52         } else {
  53                 client = jack_client_open (my_name, JackNoStartServer, &status);
  54         }
  55
  56         if (client == NULL) {
  57                 if (status & JackServerFailed) {
  58                         fprintf (stderr, "JACK server not running.\n");
  59                 } else {
  60                         fprintf (stderr, "JACK open failed, "
  61                                  "status = 0x%2.0x\n", status);
  62                 }
  63                 exit (1);
  64         }
  65
  66         /* then, get the internal client handle */
  67         client_name = argv[1];
  68         intclient = jack_internal_client_handle (client, client_name, &status);
  69         if (status & JackFailure) {
  70                 fprintf (stderr, "client %s not found.\n", client_name);
  71                 exit (2);
  72         }
  73
  74         /* now, unload the internal client */
  75         status = jack_internal_client_unload (client, intclient);
  76         if (status & JackFailure) {
  77                 if (status & JackNoSuchClient) {
  78                         fprintf (stderr, "client %s is gone.\n",
  79                                  client_name);
  80                 } else {
  81                         fprintf (stderr, "could not unload %s, "
  82                                  "returns 0x%2.0x\n", client_name, status);
  83                 }
  84                 exit (3);
  85         } else {
  86                 fprintf (stdout, "%s unloaded.\n", client_name);
  87         }
  88
  89     jack_client_close(client);
  90         return 0;
  91 }
  92
  93