/*  jack-port.c - (c) rohan drape, 2005-2006 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <unistd.h>
#include <errno.h>
#include <sys/types.h>

#include "failure.h"
#include "jack-port.h"
#include "print.h"

void jack_port_make_standard(jack_client_t *client, jack_port_t **ports, int n, int output)
{
  int i;
  for(i = 0; i < n; i++) {
    char name[64];
    int direction = output ? JackPortIsOutput : JackPortIsInput;
    snprintf(name, 64, output ? "out_%d" : "in_%d", i + 1);    
    ports[i] = jack_port_register(client, name, JACK_DEFAULT_AUDIO_TYPE, direction, 0);
    if(!ports[i]) {
      eprintf("jack_port_register() failed\n");
      FAILURE;
    }
  }
}

int jack_port_connect_named(jack_client_t *client, const char *src, const char *dst)
{
  int err = jack_connect(client, src, dst);
  if(err) {
    eprintf("jack_connect() failed: '%s' -> '%s'\n", src, dst);
    switch(err) {
    case EEXIST:
      eprintf("jack_connect() failed: connection exists\n");
      break;
    default:
      eprintf("jack_connect() failed: unknown reason\n");
      /*       FAILURE; */
      break;
    }
  }
  return err;
}

int jack_port_disconnect_named(jack_client_t *client, const char *src, const char *dst)
{
  int err = jack_disconnect(client, src, dst);
  if(err) {
    eprintf("jack_disconnect() failed: '%s' -> '%s'\n", src, dst);
    FAILURE;
  }
  return err;
}

/* TRUE iff the input port `l' is connected to the output port `r'. */

int jack_port_is_connected_p(jack_client_t *j, const char *l, const char *r)
{
  const char **c;
  c = jack_port_get_all_connections(j, jack_port_by_name(j, l));
  if(c) {
    int k;
    for(k = 0; c[k]; k++) {
      if(strcmp(c[k], r)== 0) {
        free(c);
        return 1;
      }
    }
    free(c);
  }
  return 0;
}

/* Delete all connections at the port `l'. */

void jack_port_clear_all_connections(jack_client_t *j, const char *l)
{
  const char **c;
  c = jack_port_get_all_connections(j, jack_port_by_name(j, l));
  if(c) {
    int k;
    for(k = 0; c[k]; k++) {
      jack_port_disconnect_named(j, l, c[k]);
    }
    free(c);
  }
}