daemon/cmd_stop_studio.c

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*
   3  * LADI Session Handler (ladish)
   4  *
   5  * Copyright (C) 2009 Nedko Arnaudov <nedko@arnaudov.name>
   6  *
   7  **************************************************************************
   8  * This file contains implementation of the "stop studio" command
   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 "cmd.h"
  28 #include "studio_internal.h"
  29
  30 #define cmd_ptr ((struct ladish_command *)context)
  31
  32 static bool run(void * context)
  33 {
  34   bool jack_server_started;
  35
  36   switch (cmd_ptr->state)
  37   {
  38   case LADISH_COMMAND_STATE_PENDING:
  39     if (!studio_is_started())
  40     {
  41       /* nothing to do, studio is not running */
  42       cmd_ptr->state = LADISH_COMMAND_STATE_DONE;
  43       return true;
  44     }
  45
  46     log_info("Stopping JACK server...");
  47
  48     ladish_graph_dump(g_studio.studio_graph);
  49
  50     if (!jack_proxy_stop_server())
  51     {
  52       log_error("Stopping JACK server failed.");
  53       return false;
  54     }
  55
  56     cmd_ptr->state = LADISH_COMMAND_STATE_WAITING;
  57     /* fall through */
  58   case LADISH_COMMAND_STATE_WAITING:
  59     if (!ladish_environment_consume_change(&g_studio.env_store, ladish_environment_jack_server_started, &jack_server_started))
  60     {
  61       /* we are still waiting for the JACK server stop */
  62       ASSERT(ladish_environment_get(&g_studio.env_store, ladish_environment_jack_server_started)); /* someone else consumed the state change? */
  63       return true;
  64     }
  65
  66     log_info("Wait for JACK server stop complete.");
  67
  68     ASSERT(!jack_server_started);
  69
  70     ladish_graph_dump(g_studio.studio_graph);
  71
  72     on_event_jack_stopped();
  73
  74     cmd_ptr->state = LADISH_COMMAND_STATE_DONE;
  75     return true;
  76   }
  77
  78   ASSERT_NO_PASS;
  79   return false;
  80 }
  81
  82 #undef cmd_ptr
  83
  84 bool ladish_command_stop_studio(void * call_ptr, struct ladish_cqueue * queue_ptr)
  85 {
  86   struct ladish_command * cmd_ptr;
  87
  88   cmd_ptr = ladish_command_new(sizeof(struct ladish_command));
  89   if (cmd_ptr == NULL)
  90   {
  91     lash_dbus_error(call_ptr, LASH_DBUS_ERROR_GENERIC, "ladish_command_new() failed.");
  92     goto fail;
  93   }
  94
  95   cmd_ptr->run = run;
  96
  97   if (!ladish_cqueue_add_command(queue_ptr, cmd_ptr))
  98   {
  99     lash_dbus_error(call_ptr, LASH_DBUS_ERROR_GENERIC, "ladish_cqueue_add_command() failed.");
 100     goto fail_destroy_command;
 101   }
 102
 103   return true;
 104
 105 fail_destroy_command:
 106   free(cmd_ptr);
 107
 108 fail:
 109   return false;
 110 }