550 lines
13 KiB
C
550 lines
13 KiB
C
/* -*- Mode: C ; c-basic-offset: 4 -*- */
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/*
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Copyright (C) 2007,2008 Nedko Arnaudov
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Copyright (C) 2007-2008 Juuso Alasuutari
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This program 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.
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This program 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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#if defined(HAVE_CONFIG_H)
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#include "config.h"
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#endif
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#include <stdint.h>
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#include <string.h>
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#include <dbus/dbus.h>
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#include "controller.h"
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#include "controller_internal.h"
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#include "xml.h"
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#include "reserve.h"
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struct jack_dbus_interface_descriptor * g_jackcontroller_interfaces[] =
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{
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&g_jack_controller_iface_introspectable,
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&g_jack_controller_iface_control,
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&g_jack_controller_iface_configure,
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&g_jack_controller_iface_patchbay,
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&g_jack_controller_iface_transport,
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NULL
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};
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jackctl_driver_t *
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jack_controller_find_driver(
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jackctl_server_t *server,
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const char *driver_name)
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{
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const JSList * node_ptr;
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node_ptr = jackctl_server_get_drivers_list(server);
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while (node_ptr)
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{
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if (strcmp(jackctl_driver_get_name((jackctl_driver_t *)node_ptr->data), driver_name) == 0)
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{
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return node_ptr->data;
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}
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node_ptr = jack_slist_next(node_ptr);
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}
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return NULL;
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}
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jackctl_internal_t *
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jack_controller_find_internal(
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jackctl_server_t *server,
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const char *internal_name)
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{
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const JSList * node_ptr;
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node_ptr = jackctl_server_get_internals_list(server);
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while (node_ptr)
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{
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if (strcmp(jackctl_internal_get_name((jackctl_internal_t *)node_ptr->data), internal_name) == 0)
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{
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return node_ptr->data;
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}
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node_ptr = jack_slist_next(node_ptr);
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}
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return NULL;
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}
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jackctl_parameter_t *
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jack_controller_find_parameter(
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const JSList * parameters_list,
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const char * parameter_name)
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{
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while (parameters_list)
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{
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if (strcmp(jackctl_parameter_get_name((jackctl_parameter_t *)parameters_list->data), parameter_name) == 0)
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{
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return parameters_list->data;
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}
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parameters_list = jack_slist_next(parameters_list);
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}
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return NULL;
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}
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bool
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jack_controller_select_driver(
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struct jack_controller * controller_ptr,
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const char * driver_name)
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{
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jackctl_driver_t *driver;
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driver = jack_controller_find_driver(controller_ptr->server, driver_name);
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if (driver == NULL)
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{
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return false;
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}
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jack_info("driver \"%s\" selected", driver_name);
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controller_ptr->driver = driver;
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controller_ptr->driver_set = true;
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return true;
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}
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static
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int
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jack_controller_xrun(void * arg)
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{
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((struct jack_controller *)arg)->xruns++;
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return 0;
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}
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bool
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jack_controller_start_server(
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struct jack_controller * controller_ptr,
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void *dbus_call_context_ptr)
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{
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int ret;
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jack_info("Starting jack server...");
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if (controller_ptr->started)
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{
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jack_info("Already started.");
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return TRUE;
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}
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if (controller_ptr->driver == NULL)
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{
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jack_dbus_error(dbus_call_context_ptr, JACK_DBUS_ERROR_GENERIC, "Select driver first!");
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goto fail;
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}
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controller_ptr->xruns = 0;
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if (!jackctl_server_start(
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controller_ptr->server,
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controller_ptr->driver))
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{
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jack_dbus_error(dbus_call_context_ptr, JACK_DBUS_ERROR_GENERIC, "Failed to start server");
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goto fail;
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}
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controller_ptr->client = jack_client_open(
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"dbusapi",
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JackNoStartServer,
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NULL);
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if (controller_ptr->client == NULL)
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{
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jack_dbus_error(dbus_call_context_ptr, JACK_DBUS_ERROR_GENERIC, "failed to create dbusapi jack client");
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goto fail_stop_server;
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}
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ret = jack_set_xrun_callback(controller_ptr->client, jack_controller_xrun, controller_ptr);
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if (ret != 0)
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{
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jack_dbus_error(dbus_call_context_ptr, JACK_DBUS_ERROR_GENERIC, "failed to set xrun callback. error is %d", ret);
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goto fail_close_client;
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}
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if (!jack_controller_patchbay_init(controller_ptr))
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{
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jack_error("Failed to initialize patchbay district");
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goto fail_close_client;
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}
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ret = jack_activate(controller_ptr->client);
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if (ret != 0)
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{
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jack_dbus_error(dbus_call_context_ptr, JACK_DBUS_ERROR_GENERIC, "failed to activate dbusapi jack client. error is %d", ret);
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goto fail_patchbay_uninit;
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}
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controller_ptr->started = true;
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return TRUE;
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fail_patchbay_uninit:
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jack_controller_patchbay_uninit(controller_ptr);
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fail_close_client:
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ret = jack_client_close(controller_ptr->client);
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if (ret != 0)
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{
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jack_error("jack_client_close() failed with error %d", ret);
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}
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controller_ptr->client = NULL;
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fail_stop_server:
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if (!jackctl_server_stop(controller_ptr->server))
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{
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jack_error("failed to stop jack server");
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}
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fail:
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return FALSE;
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}
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bool
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jack_controller_stop_server(
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struct jack_controller * controller_ptr,
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void *dbus_call_context_ptr)
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{
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int ret;
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jack_info("Stopping jack server...");
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if (!controller_ptr->started)
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{
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jack_info("Already stopped.");
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return TRUE;
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}
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ret = jack_deactivate(controller_ptr->client);
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if (ret != 0)
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{
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jack_dbus_error(dbus_call_context_ptr, JACK_DBUS_ERROR_GENERIC, "failed to deactivate dbusapi jack client. error is %d", ret);
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}
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jack_controller_patchbay_uninit(controller_ptr);
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ret = jack_client_close(controller_ptr->client);
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if (ret != 0)
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{
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jack_error("jack_client_close() failed with error %d", ret);
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}
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controller_ptr->client = NULL;
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if (!jackctl_server_stop(controller_ptr->server))
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{
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return FALSE;
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}
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controller_ptr->started = false;
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return TRUE;
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}
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bool
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jack_controller_switch_master(
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struct jack_controller * controller_ptr,
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void *dbus_call_context_ptr)
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{
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if (!jackctl_server_switch_master(
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controller_ptr->server,
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controller_ptr->driver))
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{
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jack_dbus_error(dbus_call_context_ptr, JACK_DBUS_ERROR_GENERIC, "Failed to switch master");
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return FALSE;
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}
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return TRUE;
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}
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#define DEVICE_MAX 2
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typedef struct reserved_audio_device {
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char device_name[64];
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rd_device * reserved_device;
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} reserved_audio_device;
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int g_device_count = 0;
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static reserved_audio_device g_reserved_device[DEVICE_MAX];
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static
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bool
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on_device_acquire(const char * device_name)
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{
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int ret;
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DBusError error;
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ret = rd_acquire(
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&g_reserved_device[g_device_count].reserved_device,
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g_connection,
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device_name,
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"Jack audio server",
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INT32_MAX,
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NULL,
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&error);
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if (ret < 0)
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{
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jack_error("Failed to acquire device name : %s error : %s", device_name, (error.message ? error.message : strerror(-ret)));
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return false;
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}
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strcpy(g_reserved_device[g_device_count].device_name, device_name);
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g_device_count++;
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jack_info("Acquired audio card %s", device_name);
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return true;
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}
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static
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void
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on_device_release(const char * device_name)
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{
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int i;
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// Look for corresponding reserved device
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for (i = 0; i < DEVICE_MAX; i++) {
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if (strcmp(g_reserved_device[i].device_name, device_name) == 0)
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break;
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}
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if (i < DEVICE_MAX) {
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jack_info("Released audio card %s", device_name);
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rd_release(g_reserved_device[i].reserved_device);
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} else {
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jack_error("Audio card %s not found!!", device_name);
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}
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g_device_count--;
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}
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void *
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jack_controller_create(
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DBusConnection *connection)
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{
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struct jack_controller *controller_ptr;
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const JSList * node_ptr;
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const char ** driver_name_target;
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const char ** internal_name_target;
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JSList * drivers;
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JSList * internals;
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DBusObjectPathVTable vtable =
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{
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jack_dbus_message_handler_unregister,
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jack_dbus_message_handler,
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NULL
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};
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controller_ptr = malloc(sizeof(struct jack_controller));
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if (!controller_ptr)
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{
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jack_error("Ran out of memory trying to allocate struct jack_controller");
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goto fail;
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}
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controller_ptr->server = jackctl_server_create(on_device_acquire, on_device_release);
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if (controller_ptr->server == NULL)
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{
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jack_error("Failed to create server object");
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goto fail_free;
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}
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controller_ptr->client = NULL;
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controller_ptr->started = false;
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controller_ptr->driver = NULL;
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controller_ptr->driver_set = false;
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drivers = (JSList *)jackctl_server_get_drivers_list(controller_ptr->server);
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controller_ptr->drivers_count = jack_slist_length(drivers);
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controller_ptr->driver_names = malloc(controller_ptr->drivers_count * sizeof(const char *));
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if (controller_ptr->driver_names == NULL)
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{
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jack_error("Ran out of memory trying to allocate driver names array");
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goto fail_destroy_server;
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}
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driver_name_target = controller_ptr->driver_names;
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node_ptr = jackctl_server_get_drivers_list(controller_ptr->server);
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while (node_ptr != NULL)
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{
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*driver_name_target = jackctl_driver_get_name((jackctl_driver_t *)node_ptr->data);
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/* select default driver */
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if (controller_ptr->driver == NULL && strcmp(*driver_name_target, DEFAULT_DRIVER) == 0)
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{
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controller_ptr->driver = (jackctl_driver_t *)node_ptr->data;
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}
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node_ptr = jack_slist_next(node_ptr);
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driver_name_target++;
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}
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internals = (JSList *)jackctl_server_get_internals_list(controller_ptr->server);
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controller_ptr->internals_count = jack_slist_length(internals);
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controller_ptr->internal_names = malloc(controller_ptr->internals_count * sizeof(const char *));
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if (controller_ptr->internal_names == NULL)
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{
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jack_error("Ran out of memory trying to allocate internals names array");
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goto fail_free_driver_names_array;
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}
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internal_name_target = controller_ptr->internal_names;
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node_ptr = jackctl_server_get_internals_list(controller_ptr->server);
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while (node_ptr != NULL)
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{
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*internal_name_target = jackctl_internal_get_name((jackctl_internal_t *)node_ptr->data);
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node_ptr = jack_slist_next(node_ptr);
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internal_name_target++;
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}
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controller_ptr->dbus_descriptor.context = controller_ptr;
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controller_ptr->dbus_descriptor.interfaces = g_jackcontroller_interfaces;
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if (!dbus_connection_register_object_path(
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connection,
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JACK_CONTROLLER_OBJECT_PATH,
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&vtable,
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&controller_ptr->dbus_descriptor))
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{
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jack_error("Ran out of memory trying to register D-Bus object path");
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goto fail_free_internal_names_array;
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}
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jack_controller_settings_load(controller_ptr);
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return controller_ptr;
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fail_free_internal_names_array:
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free(controller_ptr->internal_names);
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fail_free_driver_names_array:
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free(controller_ptr->driver_names);
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fail_destroy_server:
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jackctl_server_destroy(controller_ptr->server);
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fail_free:
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free(controller_ptr);
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fail:
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return NULL;
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}
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bool
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jack_controller_add_slave(
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struct jack_controller *controller_ptr,
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const char * driver_name)
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{
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jackctl_driver_t *driver;
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driver = jack_controller_find_driver(controller_ptr->server, driver_name);
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if (driver == NULL)
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{
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return false;
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}
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jack_info("driver \"%s\" selected", driver_name);
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return jackctl_server_add_slave(controller_ptr->server, driver);
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}
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bool
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jack_controller_remove_slave(
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struct jack_controller *controller_ptr,
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const char * driver_name)
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{
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jackctl_driver_t *driver;
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driver = jack_controller_find_driver(controller_ptr->server, driver_name);
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if (driver == NULL)
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{
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return false;
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}
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jack_info("driver \"%s\" selected", driver_name);
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return jackctl_server_remove_slave(controller_ptr->server, driver);
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}
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bool
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jack_controller_load_internal(
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struct jack_controller *controller_ptr,
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const char * internal_name)
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{
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jackctl_internal_t *internal;
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internal = jack_controller_find_internal(controller_ptr->server, internal_name);
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if (internal == NULL)
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{
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return false;
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}
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jack_info("internal \"%s\" selected", internal_name);
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return jackctl_server_load_internal(controller_ptr->server, internal);
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}
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bool
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jack_controller_unload_internal(
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struct jack_controller *controller_ptr,
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const char * internal_name)
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{
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jackctl_internal_t *internal;
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internal = jack_controller_find_internal(controller_ptr->server, internal_name);
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if (internal == NULL)
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{
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return false;
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}
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jack_info("internal \"%s\" selected", internal_name);
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return jackctl_server_unload_internal(controller_ptr->server, internal);
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}
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#define controller_ptr ((struct jack_controller *)context)
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void
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jack_controller_destroy(
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void * context)
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{
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if (controller_ptr->started)
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{
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jack_controller_stop_server(controller_ptr, NULL);
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}
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free(controller_ptr->driver_names);
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free(controller_ptr->internal_names);
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jackctl_server_destroy(controller_ptr->server);
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free(controller_ptr);
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}
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