145 lines
4.2 KiB
C
145 lines
4.2 KiB
C
/* -*- Mode: C ; c-basic-offset: 2 -*- */
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/*
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* LADI Session Handler (ladish)
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*
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* Copyright (C) 2009, 2010 Nedko Arnaudov <nedko@arnaudov.name>
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*
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**************************************************************************
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* This file contains implementation of the "start studio" command
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**************************************************************************
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*
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* LADI Session Handler is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* LADI Session Handler is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
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* or write to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <unistd.h>
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#include "cmd.h"
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#include "studio_internal.h"
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#include "loader.h"
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#include "../common/time.h"
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struct ladish_command_start_studio
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{
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struct ladish_command command;
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uint64_t deadline;
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};
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#define cmd_ptr ((struct ladish_command_start_studio *)context)
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static bool run(void * context)
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{
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bool jack_server_started;
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unsigned int app_count;
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switch (cmd_ptr->command.state)
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{
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case LADISH_COMMAND_STATE_PENDING:
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if (studio_is_started())
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{
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log_info("Ignoring start request because studio is already started.");
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/* nothing to do, studio is already running */
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cmd_ptr->command.state = LADISH_COMMAND_STATE_DONE;
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return true;
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}
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app_count = loader_get_app_count();
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if (app_count != 0)
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{
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log_error("Ignoring start request because there are apps running.");
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log_error("This could happen when JACK has crashed or when JACK stopped unexpectedly.");
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log_error("Save your work, then unload and reload the studio.");
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return false;
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}
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log_info("Starting JACK server.");
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ladish_graph_dump(g_studio.studio_graph);
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if (!jack_proxy_start_server())
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{
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log_error("Starting JACK server failed.");
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return false;
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}
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cmd_ptr->deadline = ladish_get_current_microseconds();
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if (cmd_ptr->deadline != 0)
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{
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cmd_ptr->deadline += 5000000;
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}
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cmd_ptr->command.state = LADISH_COMMAND_STATE_WAITING;
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/* fall through */
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case LADISH_COMMAND_STATE_WAITING:
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if (!ladish_environment_consume_change(&g_studio.env_store, ladish_environment_jack_server_started, &jack_server_started))
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{
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/* we are still waiting for the JACK server start */
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ASSERT(!ladish_environment_get(&g_studio.env_store, ladish_environment_jack_server_started)); /* someone else consumed the state change? */
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if (cmd_ptr->deadline != 0 && ladish_get_current_microseconds() >= cmd_ptr->deadline)
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{
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log_error("Starting JACK server succeded, but 'started' signal was not received within 5 seconds.");
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cmd_ptr->command.state = LADISH_COMMAND_STATE_DONE;
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return false;
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}
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return true;
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}
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log_info("Wait for JACK server start complete.");
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ASSERT(jack_server_started);
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on_event_jack_started(); /* fetch configuration and announce start */
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cmd_ptr->command.state = LADISH_COMMAND_STATE_DONE;
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return true;
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}
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ASSERT_NO_PASS;
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return false;
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}
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#undef cmd_ptr
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bool ladish_command_start_studio(void * call_ptr, struct ladish_cqueue * queue_ptr)
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{
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struct ladish_command_start_studio * cmd_ptr;
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cmd_ptr = ladish_command_new(sizeof(struct ladish_command_start_studio));
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if (cmd_ptr == NULL)
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{
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lash_dbus_error(call_ptr, LASH_DBUS_ERROR_GENERIC, "ladish_command_new() failed.");
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goto fail;
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}
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cmd_ptr->command.run = run;
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cmd_ptr->deadline = 0;
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if (!ladish_cqueue_add_command(queue_ptr, &cmd_ptr->command))
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{
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lash_dbus_error(call_ptr, LASH_DBUS_ERROR_GENERIC, "ladish_cqueue_add_command() failed.");
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goto fail_destroy_command;
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}
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return true;
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fail_destroy_command:
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free(cmd_ptr);
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fail:
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return false;
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}
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