example-clients/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     $Id: connect.c,v 1.1.2.1 2006/06/05 16:54:55 letz Exp $
  19 */
  20
  21 #include <stdio.h>
  22 #include <errno.h>
  23 #ifndef WIN32
  24 #include <unistd.h>
  25 #endif
  26 #include <string.h>
  27 #include <stdlib.h>
  28 #include <math.h>
  29
  30
  31 #include "jack.h"
  32
  33 jack_port_t *input_port;
  34 jack_port_t *output_port;
  35 int connecting, disconnecting;
  36 #define TRUE 1
  37 #define FALSE 0
  38
  39 int
  40 main (int argc, char *argv[])
  41
  42 {
  43         jack_client_t* client = NULL;
  44         char *my_name = strrchr(argv[0], '/');
  45         connecting = disconnecting = FALSE;
  46         if (my_name == 0) {
  47                 my_name = argv[0];
  48         } else {
  49                 my_name ++;
  50         }
  51
  52     printf("name %s\n", my_name);
  53
  54         if (strstr(my_name, "jack_disconnect")) {
  55                 disconnecting = TRUE;
  56         } else
  57         if (strstr(my_name, "jack_connect")) {
  58                 connecting = TRUE;
  59         } else {
  60                 fprintf(stderr, "ERROR! client should be called jack_connect or jack_disconnect. client is called %s\n", my_name);
  61                 //return 1;
  62                 goto error;
  63         }
  64
  65         printf("connecting %ld\n",connecting);
  66
  67         if (argc != 3) {
  68                 fprintf (stderr, "usage: %s <src_port> <dst_port>\n", my_name);
  69                 fprintf(stderr, "The source port must be an output port of the source client.\n");
  70                 fprintf (stderr, "The destination port must be an input port of the destination client.\n");
  71                 //return 1;
  72                 goto error;
  73         }
  74
  75         /* try to become a client of the JACK server */
  76
  77         if ((client = jack_client_new (my_name)) == 0) {
  78                 fprintf (stderr, "jack server not running?\n");
  79                 //return 1;
  80                 goto error;
  81         }
  82
  83         /* display the current sample rate. once the client is activated
  84            (see below), you should rely on your own sample rate
  85            callback (see above) for this value.
  86         */
  87
  88 //      printf ("engine sample rate: %" PRIu32 "\n",jack_get_sample_rate (client));
  89
  90         /* find the two ports */
  91
  92         if ((input_port = jack_port_by_name(client, argv[1])) == 0) {
  93                 fprintf (stderr, "ERROR %s not a valid port\n", argv[1]);
  94                 goto error;
  95         }
  96         if ((output_port = jack_port_by_name(client, argv[2])) == 0) {
  97                 fprintf (stderr, "ERROR %s not a valid port\n", argv[2]);
  98                 goto error;
  99         }
 100
 101         /* tell the JACK server that we are ready to roll */
 102
 103         if (jack_activate (client)) {
 104                 fprintf (stderr, "cannot activate client");
 105                 goto error;
 106         }
 107
 108         /* connect the ports. Note: you can't do this before
 109            the client is activated (this may change in the future).
 110         */
 111
 112     /* jack_port_connect not yet implemented
 113         if (jack_port_connect(client, input_port, output_port)) {
 114                 fprintf (stderr, "cannot connect ports\n");
 115         }
 116     */
 117         if (connecting) {
 118         printf("connecting %s %s\n",jack_port_name(input_port), jack_port_name(output_port));
 119
 120                 if (jack_connect(client, jack_port_name(input_port), jack_port_name(output_port))) {
 121                         fprintf (stderr, "cannot connect ports\n");
 122                         goto error;
 123         }
 124         }
 125         if (disconnecting) {
 126         printf("disconnecting %s %s\n",jack_port_name(input_port), jack_port_name(output_port));
 127
 128                 if (jack_disconnect(client, jack_port_name(input_port), jack_port_name(output_port))) {
 129                         fprintf (stderr, "cannot disconnect ports\n");
 130             goto error;
 131         }
 132         }
 133     //jack_deactivate (client);
 134         jack_client_close (client);
 135         return 0;
 136
 137 error:
 138     if (client) jack_client_close (client);
 139     return 1;
 140 }
 141