daemon/port.c

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*
   3  * LADI Session Handler (ladish)
   4  *
   5  * Copyright (C) 2009, 2010, 2011 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   uuid_t app_uuid;                         /* The UUID of the app that owns this client */
  35   bool link;                               /* Whether the port is studio-room link port */
  36   uint64_t jack_id;                        /* JACK port ID. */
  37   uint64_t jack_id_room;                   /* JACK port ID in room. valid only for link ports */
  38
  39   pid_t pid;                               /* process id. */
  40
  41   void * vgraph;                /* virtual graph */
  42
  43   ladish_dict_handle dict;
  44 };
  45
  46 bool
  47 ladish_port_create(
  48   const uuid_t uuid_ptr,
  49   bool link,
  50   ladish_port_handle * port_handle_ptr)
  51 {
  52   struct ladish_port * port_ptr;
  53
  54   port_ptr = malloc(sizeof(struct ladish_port));
  55   if (port_ptr == NULL)
  56   {
  57     log_error("malloc() failed to allocate struct ladish_port");
  58     return false;
  59   }
  60
  61   if (!ladish_dict_create(&port_ptr->dict))
  62   {
  63     log_error("ladish_dict_create() failed for port");
  64     free(port_ptr);
  65     return false;
  66   }
  67
  68   if (uuid_ptr == NULL)
  69   {
  70     uuid_generate(port_ptr->uuid);
  71   }
  72   else
  73   {
  74     uuid_copy(port_ptr->uuid, uuid_ptr);
  75   }
  76
  77   uuid_clear(port_ptr->app_uuid);
  78
  79   port_ptr->jack_id = 0;
  80   port_ptr->jack_id_room = 0;
  81   port_ptr->link = link;
  82   port_ptr->refcount = 0;
  83
  84   port_ptr->vgraph = NULL;
  85
  86   log_info("port %p created", port_ptr);
  87   *port_handle_ptr = (ladish_port_handle)port_ptr;
  88   return true;
  89 }
  90
  91 #define port_ptr ((struct ladish_port * )port_handle)
  92
  93 bool ladish_port_create_copy(ladish_port_handle port_handle, ladish_port_handle * port_handle_ptr)
  94 {
  95   return ladish_port_create(port_ptr->uuid, port_ptr->link, port_handle_ptr);
  96 }
  97
  98 void ladish_port_destroy(ladish_port_handle port_handle)
  99 {
 100   log_info("port %p destroy", port_ptr);
 101   ASSERT(port_ptr->refcount == 0);
 102   ladish_dict_destroy(port_ptr->dict);
 103   free(port_ptr);
 104 }
 105
 106 ladish_dict_handle ladish_port_get_dict(ladish_port_handle port_handle)
 107 {
 108   return port_ptr->dict;
 109 }
 110
 111 void ladish_port_get_uuid(ladish_port_handle port_handle, uuid_t uuid)
 112 {
 113   uuid_copy(uuid, port_ptr->uuid);
 114 }
 115
 116 void ladish_port_set_jack_id(ladish_port_handle port_handle, uint64_t jack_id)
 117 {
 118   log_info("port %p jack id set to %"PRIu64, port_handle, jack_id);
 119   port_ptr->jack_id = jack_id;
 120 }
 121
 122 uint64_t ladish_port_get_jack_id(ladish_port_handle port_handle)
 123 {
 124   return port_ptr->jack_id;
 125 }
 126
 127 void ladish_port_set_jack_id_room(ladish_port_handle port_handle, uint64_t jack_id)
 128 {
 129   log_info("port %p jack id (room) set to %"PRIu64, port_handle, jack_id);
 130   ASSERT(port_ptr->link);
 131   port_ptr->jack_id_room = jack_id;
 132 }
 133
 134 uint64_t ladish_port_get_jack_id_room(ladish_port_handle port_handle)
 135 {
 136   if (port_ptr->link)
 137   {
 138     return port_ptr->jack_id_room;
 139   }
 140   else
 141   {
 142     return port_ptr->jack_id;
 143   }
 144 }
 145
 146 void ladish_port_add_ref(ladish_port_handle port_handle)
 147 {
 148   port_ptr->refcount++;
 149 }
 150
 151 void ladish_port_del_ref(ladish_port_handle port_handle)
 152 {
 153   ASSERT(port_ptr->refcount > 0);
 154   port_ptr->refcount--;
 155
 156   if (port_ptr->refcount == 0)
 157   {
 158     ladish_port_destroy(port_handle);
 159   }
 160 }
 161
 162 bool ladish_port_is_link(ladish_port_handle port_handle)
 163 {
 164   return port_ptr->link;
 165 }
 166
 167 void ladish_port_set_vgraph(ladish_port_handle port_handle, void * vgraph)
 168 {
 169   port_ptr->vgraph = vgraph;
 170 }
 171
 172 void * ladish_port_get_vgraph(ladish_port_handle port_handle)
 173 {
 174   return port_ptr->vgraph;
 175 }
 176
 177 void ladish_port_set_app(ladish_port_handle port_handle, const uuid_t app_uuid)
 178 {
 179   uuid_copy(port_ptr->app_uuid, app_uuid);
 180 }
 181
 182 bool ladish_port_get_app(ladish_port_handle port_handle, uuid_t app_uuid)
 183 {
 184   if (uuid_is_null(port_ptr->app_uuid))
 185   {
 186     return false;
 187   }
 188
 189   uuid_copy(app_uuid, port_ptr->app_uuid);
 190   return true;
 191 }
 192
 193 bool ladish_port_has_app(ladish_port_handle port_handle)
 194 {
 195   return !uuid_is_null(port_ptr->app_uuid);
 196 }
 197
 198 bool ladish_port_belongs_to_app(ladish_port_handle port_handle, const uuid_t app_uuid)
 199 {
 200   if (uuid_is_null(port_ptr->app_uuid))
 201   {
 202     return false;
 203   }
 204
 205   return uuid_compare(port_ptr->app_uuid, app_uuid) == 0;
 206 }
 207
 208 void ladish_port_set_pid(ladish_port_handle port_handle, pid_t pid)
 209 {
 210   port_ptr->pid = pid;
 211 }
 212
 213 pid_t ladish_port_get_pid(ladish_port_handle port_handle)
 214 {
 215   return port_ptr->pid;
 216 }
 217
 218 #undef port_ptr