daemon/port.c

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*
   3  * LADI Session Handler (ladish)
   4  *
   5  * Copyright (C) 2009, 2010 Nedko Arnaudov <nedko@arnaudov.name>
   6  *
   7  **************************************************************************
   8  * This file contains the implementation of the port objects
   9  **************************************************************************
  10  *
  11  * LADI Session Handler is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * LADI Session Handler is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
  23  * or write to the Free Software Foundation, Inc.,
  24  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  25  */
  26
  27 #include "port.h"
  28
  29 /* JACK port */
  30 struct ladish_port
  31 {
  32   int refcount;
  33   uuid_t uuid;                             /* The UUID of the port */
  34   bool link;                               /* Whether the port is studio-room link port */
  35   uint64_t jack_id;                        /* JACK port ID. */
  36   uint64_t jack_id_room;                   /* JACK port ID in room. valid only for link ports */
  37
  38   ladish_dict_handle dict;
  39 };
  40
  41 bool
  42 ladish_port_create(
  43   const uuid_t uuid_ptr,
  44   bool link,
  45   ladish_port_handle * port_handle_ptr)
  46 {
  47   struct ladish_port * port_ptr;
  48
  49   port_ptr = malloc(sizeof(struct ladish_port));
  50   if (port_ptr == NULL)
  51   {
  52     log_error("malloc() failed to allocate struct ladish_port");
  53     return false;
  54   }
  55
  56   if (!ladish_dict_create(&port_ptr->dict))
  57   {
  58     log_error("ladish_dict_create() failed for port");
  59     free(port_ptr);
  60     return false;
  61   }
  62
  63   if (uuid_ptr == NULL)
  64   {
  65     uuid_generate(port_ptr->uuid);
  66   }
  67   else
  68   {
  69     uuid_copy(port_ptr->uuid, uuid_ptr);
  70   }
  71
  72   port_ptr->jack_id = 0;
  73   port_ptr->jack_id_room = 0;
  74   port_ptr->link = link;
  75   port_ptr->refcount = 0;
  76
  77   log_info("port %p created", port_ptr);
  78   *port_handle_ptr = (ladish_port_handle)port_ptr;
  79   return true;
  80 }
  81
  82 #define port_ptr ((struct ladish_port * )port_handle)
  83
  84 bool ladish_port_create_copy(ladish_port_handle port_handle, ladish_port_handle * port_handle_ptr)
  85 {
  86   return ladish_port_create(port_ptr->uuid, port_ptr->link, port_handle_ptr);
  87 }
  88
  89 void ladish_port_destroy(ladish_port_handle port_handle)
  90 {
  91   log_info("port %p destroy", port_ptr);
  92   ASSERT(port_ptr->refcount == 0);
  93   ladish_dict_destroy(port_ptr->dict);
  94   free(port_ptr);
  95 }
  96
  97 ladish_dict_handle ladish_port_get_dict(ladish_port_handle port_handle)
  98 {
  99   return port_ptr->dict;
 100 }
 101
 102 void ladish_port_get_uuid(ladish_port_handle port_handle, uuid_t uuid)
 103 {
 104   uuid_copy(uuid, port_ptr->uuid);
 105 }
 106
 107 void ladish_port_set_jack_id(ladish_port_handle port_handle, uint64_t jack_id)
 108 {
 109   log_info("port %p jack id set to %"PRIu64, port_handle, jack_id);
 110   port_ptr->jack_id = jack_id;
 111 }
 112
 113 uint64_t ladish_port_get_jack_id(ladish_port_handle port_handle)
 114 {
 115   return port_ptr->jack_id;
 116 }
 117
 118 void ladish_port_set_jack_id_room(ladish_port_handle port_handle, uint64_t jack_id)
 119 {
 120   log_info("port %p jack id (room) set to %"PRIu64, port_handle, jack_id);
 121   ASSERT(port_ptr->link);
 122   port_ptr->jack_id_room = jack_id;
 123 }
 124
 125 uint64_t ladish_port_get_jack_id_room(ladish_port_handle port_handle)
 126 {
 127   if (port_ptr->link)
 128   {
 129     return port_ptr->jack_id_room;
 130   }
 131   else
 132   {
 133     return port_ptr->jack_id;
 134   }
 135 }
 136
 137 void ladish_port_add_ref(ladish_port_handle port_handle)
 138 {
 139   port_ptr->refcount++;
 140 }
 141
 142 void ladish_port_del_ref(ladish_port_handle port_handle)
 143 {
 144   ASSERT(port_ptr->refcount > 0);
 145   port_ptr->refcount--;
 146
 147   if (port_ptr->refcount == 0)
 148   {
 149     ladish_port_destroy(port_handle);
 150   }
 151 }
 152
 153 bool ladish_port_is_link(ladish_port_handle port_handle)
 154 {
 155   return port_ptr->link;
 156 }
 157
 158 #undef port_ptr