tools/connect.c

   1 /*
   2     Copyright (C) 2002 Jeremy Hall
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <stdio.h>
  21 #include <errno.h>
  22 #include <unistd.h>
  23 #include <string.h>
  24 #include <stdlib.h>
  25 #include <getopt.h>
  26
  27 #include <config.h>
  28
  29 #include <jack/jack.h>
  30
  31 jack_port_t *input_port;
  32 jack_port_t *output_port;
  33 int connecting, disconnecting;
  34 #define TRUE 1
  35 #define FALSE 0
  36
  37 void
  38 show_version (char *my_name)
  39 {
  40         fprintf (stderr, "%s: JACK Audio Connection Kit version " VERSION "\n", my_name);
  41 }
  42
  43 void
  44 show_usage (char *my_name)
  45 {
  46         show_version (my_name);
  47         fprintf (stderr, "\nusage: %s [options] <src_port> <dst_port>\n", my_name);
  48         fprintf (stderr, "Connects two JACK ports together.\n\n");
  49         fprintf (stderr, "        The source port must be an output port of the source client.\n");
  50         fprintf (stderr, "        The destination port must be an input port of the destination client.\n");
  51         fprintf (stderr, "        -s, --server <name>   Connect to the jack server named <name>\n");
  52         fprintf (stderr, "        -v, --version         Output version information and exit\n");
  53         fprintf (stderr, "        -h, --help            Display this help message\n\n");
  54         fprintf (stderr, "For more information see http://jackaudio.org/\n");
  55 }
  56
  57 int
  58 main (int argc, char *argv[])
  59 {
  60         jack_client_t *client;
  61         jack_status_t status;
  62         char *server_name = NULL;
  63     int c;
  64     int option_index;
  65     jack_options_t options = JackNoStartServer;
  66         char *my_name = strrchr(argv[0], '/');
  67
  68         struct option long_options[] = {
  69             { "server", 1, 0, 's' },
  70                 { "help", 0, 0, 'h' },
  71                 { "version", 0, 0, 'v' },
  72                 { 0, 0, 0, 0 }
  73         };
  74
  75         while ((c = getopt_long (argc, argv, "s:AclLphvt", long_options, &option_index)) >= 0) {
  76                 switch (c) {
  77                 case 's':
  78             server_name = (char *) malloc (sizeof (char) * strlen(optarg));
  79             strcpy (server_name, optarg);
  80             options |= JackServerName;
  81             break;
  82                 case 'h':
  83                         show_usage (my_name);
  84                         return 1;
  85                         break;
  86                 case 'v':
  87                         show_version (my_name);
  88                         return 1;
  89                         break;
  90                 default:
  91                         show_usage (my_name);
  92                         return 1;
  93                         break;
  94                 }
  95         }
  96
  97         connecting = disconnecting = FALSE;
  98         if (my_name == 0) {
  99                 my_name = argv[0];
 100         } else {
 101         my_name ++;
 102         }
 103
 104         if (strstr(my_name, "disconnect")) {
 105                 disconnecting = TRUE;
 106         } else
 107         if (strstr(my_name, "connect")) {
 108                 connecting = TRUE;
 109         } else {
 110                 fprintf(stderr, "ERROR! client should be called jack_connect or jack_disconnect. client is called %s\n", my_name);
 111                 return 1;
 112         }
 113
 114         if (argc < 3) show_usage(my_name);
 115
 116         /* try to become a client of the JACK server */
 117
 118         if ((client = jack_client_open (my_name, options, &status, server_name)) == 0) {
 119                 fprintf (stderr, "jack server not running?\n");
 120                 return 1;
 121         }
 122
 123         /* display the current sample rate. once the client is activated
 124            (see below), you should rely on your own sample rate
 125            callback (see above) for this value.
 126         */
 127
 128         printf ("engine sample rate: %" PRIu32 "\n",
 129                 jack_get_sample_rate (client));
 130
 131         /* find the two ports */
 132
 133         if ((input_port = jack_port_by_name(client, argv[argc-1])) == 0) {
 134                 fprintf (stderr, "ERROR %s not a valid port\n", argv[argc-1]);
 135                 return 1;
 136                 }
 137         if ((output_port = jack_port_by_name(client, argv[argc-2])) == 0) {
 138                 fprintf (stderr, "ERROR %s not a valid port\n", argv[argc-2]);
 139                 return 1;
 140                 }
 141
 142         /* tell the JACK server that we are ready to roll */
 143
 144         if (jack_activate (client)) {
 145                 fprintf (stderr, "cannot activate client");
 146                 return 1;
 147         }
 148
 149         /* connect the ports. Note: you can't do this before
 150            the client is activated (this may change in the future).
 151         */
 152
 153 /* jack_port_connect not implemented
 154         if (jack_port_connect(client, input_port, output_port)) {
 155                 fprintf (stderr, "cannot connect ports\n");
 156         }
 157 */
 158         if (connecting) {
 159                 if (jack_connect(client, jack_port_name(input_port), jack_port_name(output_port))) {
 160                         fprintf (stderr, "cannot connect ports\n");
 161                         return 1;
 162         }
 163         }
 164         if (disconnecting) {
 165                 if (jack_disconnect(client, jack_port_name(input_port), jack_port_name(output_port))) {
 166                         fprintf (stderr, "cannot disconnect ports\n");
 167                         return 1;
 168         }
 169         }
 170
 171         jack_client_close (client);
 172         exit (0);
 173 }
 174