787 lines
19 KiB
C
787 lines
19 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) 2009,2010,2011,2012 Nedko Arnaudov <nedko@arnaudov.name>
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*
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**************************************************************************
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* This file contains helper functionality for accessing JACK through D-Bus
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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 "jack_proxy.h"
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jack_proxy_callback_server_started g_on_server_started;
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jack_proxy_callback_server_stopped g_on_server_stopped;
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jack_proxy_callback_server_appeared g_on_server_appeared;
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jack_proxy_callback_server_disappeared g_on_server_disappeared;
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static
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void
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on_jack_server_started(
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void * UNUSED(context),
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DBusMessage * UNUSED(message_ptr))
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{
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log_debug("JACK server start signal received.");
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if (g_on_server_started != NULL)
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{
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g_on_server_started();
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}
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}
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static
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void
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on_jack_server_stopped(
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void * UNUSED(context),
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DBusMessage * UNUSED(message_ptr))
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{
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log_debug("JACK server stop signal received.");
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if (g_on_server_stopped != NULL)
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{
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g_on_server_stopped();
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}
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}
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static void on_jack_life_status_changed(bool appeared)
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{
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if (appeared)
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{
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log_debug("JACK serivce appeared");
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if (g_on_server_appeared != NULL)
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{
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g_on_server_appeared();
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}
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}
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else
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{
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log_debug("JACK serivce disappeared");
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if (g_on_server_disappeared != NULL)
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{
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g_on_server_disappeared();
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}
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}
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}
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/* this must be static because it is referenced by the
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* dbus helper layer when hooks are active */
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static struct cdbus_signal_hook g_control_signal_hooks[] =
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{
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{"ServerStarted", on_jack_server_started},
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{"ServerStopped", on_jack_server_stopped},
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{NULL, NULL}
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};
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bool
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jack_proxy_init(
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jack_proxy_callback_server_started server_started,
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jack_proxy_callback_server_stopped server_stopped,
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jack_proxy_callback_server_appeared server_appeared,
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jack_proxy_callback_server_disappeared server_disappeared)
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{
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g_on_server_started = server_started;
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g_on_server_stopped = server_stopped;
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g_on_server_appeared = server_appeared;
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g_on_server_disappeared = server_disappeared;
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if (!cdbus_register_service_lifetime_hook(cdbus_g_dbus_connection, JACKDBUS_SERVICE_NAME, on_jack_life_status_changed))
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{
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log_error("dbus_register_service_lifetime_hook() failed for jackdbus service");
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return false;
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}
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if (!cdbus_register_object_signal_hooks(
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cdbus_g_dbus_connection,
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JACKDBUS_SERVICE_NAME,
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JACKDBUS_OBJECT_PATH,
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JACKDBUS_IFACE_CONTROL,
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NULL,
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g_control_signal_hooks))
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{
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cdbus_unregister_service_lifetime_hook(cdbus_g_dbus_connection, JACKDBUS_SERVICE_NAME);
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log_error("dbus_register_object_signal_hooks() failed for jackdbus control interface");
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return false;
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}
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{
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bool started;
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if (jack_proxy_is_started(&started))
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{
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if (g_on_server_appeared != NULL)
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{
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g_on_server_appeared();
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}
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if (g_on_server_started != NULL && started)
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{
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g_on_server_started();
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}
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}
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}
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return true;
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}
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void
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jack_proxy_uninit(
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void)
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{
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cdbus_unregister_object_signal_hooks(cdbus_g_dbus_connection, JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONTROL);
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cdbus_unregister_service_lifetime_hook(cdbus_g_dbus_connection, JACKDBUS_SERVICE_NAME);
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}
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bool
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jack_proxy_is_started(
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bool * started_ptr)
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{
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dbus_bool_t started;
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if (!cdbus_call(0, JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONTROL, "IsStarted", "", "b", &started))
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{
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return false;
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}
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*started_ptr = started;
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return true;
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}
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bool
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jack_proxy_connect_ports(
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uint64_t UNUSED(port1_id),
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uint64_t UNUSED(port2_id))
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{
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/* not implemented */
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return false;
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}
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static
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bool
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add_address(
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DBusMessageIter * iter_ptr,
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const char * address)
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{
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DBusMessageIter array_iter;
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const char * component;
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if (!dbus_message_iter_open_container(iter_ptr, DBUS_TYPE_ARRAY, "s", &array_iter))
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{
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log_error("dbus_message_iter_open_container() failed.");
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return false;
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}
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if (address != NULL)
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{
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component = address;
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while (*component != 0)
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{
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if (!dbus_message_iter_append_basic(&array_iter, DBUS_TYPE_STRING, &component))
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{
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log_error("dbus_message_iter_append_basic() failed.");
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return false;
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}
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component += strlen(component) + 1;
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}
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}
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dbus_message_iter_close_container(iter_ptr, &array_iter);
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return true;
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}
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bool
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jack_proxy_read_conf_container(
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const char * address,
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void * callback_context,
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bool (* callback)(void * context, bool leaf, const char * address, char * child))
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{
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DBusMessage * request_ptr;
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DBusMessage * reply_ptr;
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DBusMessageIter top_iter;
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DBusMessageIter array_iter;
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const char * reply_signature;
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dbus_bool_t leaf; /* Whether children are parameters (true) or containers (false) */
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char * child;
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request_ptr = dbus_message_new_method_call(JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONFIGURE, "ReadContainer");
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if (request_ptr == NULL)
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{
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log_error("dbus_message_new_method_call() failed.");
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return false;
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}
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dbus_message_iter_init_append(request_ptr, &top_iter);
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if (!add_address(&top_iter, address))
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{
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dbus_message_unref(request_ptr);
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return false;
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}
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reply_ptr = cdbus_call_raw(0, request_ptr);
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dbus_message_unref(request_ptr);
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if (reply_ptr == NULL)
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{
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return false;
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}
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reply_signature = dbus_message_get_signature(reply_ptr);
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if (strcmp(reply_signature, "bas") != 0)
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{
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log_error("ReadContainer() reply signature mismatch. '%s'", reply_signature);
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dbus_message_unref(reply_ptr);
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return false;
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}
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dbus_message_iter_init(reply_ptr, &top_iter);
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dbus_message_iter_get_basic(&top_iter, &leaf);
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dbus_message_iter_next(&top_iter);
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dbus_message_iter_recurse(&top_iter, &array_iter);
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while (dbus_message_iter_get_arg_type(&array_iter) != DBUS_TYPE_INVALID)
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{
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dbus_message_iter_get_basic(&array_iter, &child);
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if (!callback(callback_context, leaf, address, child))
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{
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break;
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}
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dbus_message_iter_next(&array_iter);
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}
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dbus_message_unref(reply_ptr);
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return true;
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}
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bool
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get_variant(
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DBusMessageIter * iter_ptr,
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struct jack_parameter_variant * parameter_ptr)
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{
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DBusMessageIter variant_iter;
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int type;
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dbus_bool_t boolean;
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dbus_int32_t int32;
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dbus_uint32_t uint32;
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char * string;
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dbus_message_iter_recurse(iter_ptr, &variant_iter);
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log_debug("variant signature: '%s'", dbus_message_iter_get_signature(&variant_iter));
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type = dbus_message_iter_get_arg_type(&variant_iter);
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switch (type)
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{
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case DBUS_TYPE_INT32:
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dbus_message_iter_get_basic(&variant_iter, &int32);
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parameter_ptr->value.int32 = int32;
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parameter_ptr->type = jack_int32;
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return true;
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case DBUS_TYPE_UINT32:
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dbus_message_iter_get_basic(&variant_iter, &uint32);
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parameter_ptr->value.uint32 = uint32;
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parameter_ptr->type = jack_uint32;
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return true;
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case DBUS_TYPE_BYTE:
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dbus_message_iter_get_basic(&variant_iter, ¶meter_ptr->value.byte);
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parameter_ptr->type = jack_byte;
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return true;
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case DBUS_TYPE_STRING:
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dbus_message_iter_get_basic(&variant_iter, &string);
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string = strdup(string);
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if (string == NULL)
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{
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log_error("strdup failed.");
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return false;
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}
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parameter_ptr->value.string = string;
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parameter_ptr->type = jack_string;
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return true;
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case DBUS_TYPE_BOOLEAN:
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dbus_message_iter_get_basic(&variant_iter, &boolean);
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parameter_ptr->value.boolean = boolean;
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parameter_ptr->type = jack_boolean;
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return true;
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}
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log_error("Unknown D-Bus parameter type %i", (int)type);
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return false;
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}
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bool
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jack_proxy_get_parameter_value(
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const char * address,
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bool * is_set_ptr,
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struct jack_parameter_variant * parameter_ptr)
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{
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DBusMessage * request_ptr;
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DBusMessage * reply_ptr;
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DBusMessageIter top_iter;
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const char * reply_signature;
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dbus_bool_t is_set;
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struct jack_parameter_variant default_value;
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request_ptr = dbus_message_new_method_call(JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONFIGURE, "GetParameterValue");
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if (request_ptr == NULL)
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{
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log_error("dbus_message_new_method_call() failed.");
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return false;
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}
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dbus_message_iter_init_append(request_ptr, &top_iter);
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if (!add_address(&top_iter, address))
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{
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dbus_message_unref(request_ptr);
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return false;
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}
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reply_ptr = cdbus_call_raw(0, request_ptr);
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dbus_message_unref(request_ptr);
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if (reply_ptr == NULL)
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{
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return false;
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}
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reply_signature = dbus_message_get_signature(reply_ptr);
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if (strcmp(reply_signature, "bvv") != 0)
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{
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log_error("GetParameterValue() reply signature mismatch. '%s'", reply_signature);
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dbus_message_unref(reply_ptr);
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return false;
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}
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dbus_message_iter_init(reply_ptr, &top_iter);
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dbus_message_iter_get_basic(&top_iter, &is_set);
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dbus_message_iter_next(&top_iter);
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if (!get_variant(&top_iter, &default_value))
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{
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dbus_message_unref(reply_ptr);
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return false;
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}
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if (default_value.type == jack_string)
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{
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free(default_value.value.string);
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}
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dbus_message_iter_next(&top_iter);
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if (!get_variant(&top_iter, parameter_ptr))
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{
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dbus_message_unref(reply_ptr);
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return false;
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}
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dbus_message_unref(reply_ptr);
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*is_set_ptr = is_set;
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return true;
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}
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bool
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jack_proxy_set_parameter_value(
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const char * address,
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const struct jack_parameter_variant * parameter_ptr)
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{
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DBusMessage * request_ptr;
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DBusMessage * reply_ptr;
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DBusMessageIter top_iter;
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const char * reply_signature;
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int type;
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const void * value_ptr;
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dbus_bool_t boolean;
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switch (parameter_ptr->type)
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{
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case jack_int32:
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type = DBUS_TYPE_INT32;
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value_ptr = ¶meter_ptr->value.int32;
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break;
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case jack_uint32:
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type = DBUS_TYPE_UINT32;
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value_ptr = ¶meter_ptr->value.uint32;
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break;
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case jack_byte:
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type = DBUS_TYPE_BYTE;
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value_ptr = ¶meter_ptr->value.byte;
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break;
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case jack_string:
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type = DBUS_TYPE_STRING;
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value_ptr = ¶meter_ptr->value.string;
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break;
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case jack_boolean:
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type = DBUS_TYPE_BOOLEAN;
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boolean = parameter_ptr->value.boolean;
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value_ptr = &boolean;
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break;
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default:
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log_error("Unknown jack parameter type %i", (int)parameter_ptr->type);
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return false;
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}
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request_ptr = dbus_message_new_method_call(JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONFIGURE, "SetParameterValue");
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if (request_ptr == NULL)
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{
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log_error("dbus_message_new_method_call() failed.");
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return false;
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}
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dbus_message_iter_init_append(request_ptr, &top_iter);
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if (!add_address(&top_iter, address))
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{
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dbus_message_unref(request_ptr);
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return false;
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}
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if (!cdbus_iter_append_variant(&top_iter, type, value_ptr))
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{
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dbus_message_unref(request_ptr);
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return false;
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}
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reply_ptr = cdbus_call_raw(0, request_ptr);
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dbus_message_unref(request_ptr);
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if (reply_ptr == NULL)
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{
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return false;
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}
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reply_signature = dbus_message_get_signature(reply_ptr);
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dbus_message_unref(reply_ptr);
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if (strcmp(reply_signature, "") != 0)
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{
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log_error("SetParameterValue() reply signature mismatch. '%s'", reply_signature);
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return false;
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}
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return true;
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}
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bool
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jack_proxy_reset_parameter_value(
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const char * address)
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{
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DBusMessage * request_ptr;
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DBusMessage * reply_ptr;
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DBusMessageIter top_iter;
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const char * reply_signature;
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request_ptr = dbus_message_new_method_call(JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONFIGURE, "ResetParameterValue");
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if (request_ptr == NULL)
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{
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log_error("dbus_message_new_method_call() failed.");
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return false;
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}
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dbus_message_iter_init_append(request_ptr, &top_iter);
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if (!add_address(&top_iter, address))
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{
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dbus_message_unref(request_ptr);
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return false;
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}
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reply_ptr = cdbus_call_raw(0, request_ptr);
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dbus_message_unref(request_ptr);
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if (reply_ptr == NULL)
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{
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return false;
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}
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reply_signature = dbus_message_get_signature(reply_ptr);
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dbus_message_unref(reply_ptr);
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if (strcmp(reply_signature, "") != 0)
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{
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log_error("ResetParameterValue() reply signature mismatch. '%s'", reply_signature);
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return false;
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}
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return true;
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}
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|
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bool jack_proxy_start_server(void)
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{
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return cdbus_call(7000, JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONTROL, "StartServer", "", "");
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}
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|
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bool jack_proxy_stop_server(void)
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{
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return cdbus_call(0, JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONTROL, "StopServer", "", "");
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}
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bool jack_proxy_is_realtime(bool * realtime_ptr)
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{
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dbus_bool_t realtime;
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if (!cdbus_call(0, JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONTROL, "IsStarted", "", "b", &realtime))
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{
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return false;
|
|
}
|
|
|
|
*realtime_ptr = realtime;
|
|
return true;
|
|
}
|
|
|
|
bool jack_proxy_sample_rate(uint32_t * sample_rate_ptr)
|
|
{
|
|
return cdbus_call(0, JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONTROL, "GetSampleRate", "", "u", sample_rate_ptr);
|
|
}
|
|
|
|
bool jack_proxy_get_xruns(uint32_t * xruns_ptr)
|
|
{
|
|
return cdbus_call(0, JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONTROL, "GetXruns", "", "u", xruns_ptr);
|
|
}
|
|
|
|
bool jack_proxy_get_dsp_load(double * dsp_load_ptr)
|
|
{
|
|
return cdbus_call(0, JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONTROL, "GetLoad", "", "d", dsp_load_ptr);
|
|
}
|
|
|
|
bool jack_proxy_get_buffer_size(uint32_t * size_ptr)
|
|
{
|
|
return cdbus_call(0, JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONTROL, "GetBufferSize", "", "u", size_ptr);
|
|
}
|
|
|
|
bool jack_proxy_set_buffer_size(uint32_t size)
|
|
{
|
|
return cdbus_call(0, JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONTROL, "SetBufferSize", "u", &size, "");
|
|
}
|
|
|
|
bool jack_proxy_reset_xruns(void)
|
|
{
|
|
return cdbus_call(0, JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONTROL, "ResetXruns", "", "");
|
|
}
|
|
|
|
static
|
|
bool
|
|
reset_callback(
|
|
void * context,
|
|
bool leaf,
|
|
const char * address,
|
|
char * child)
|
|
{
|
|
const char * component;
|
|
char * dst;
|
|
size_t len;
|
|
|
|
component = address;
|
|
while (*component != 0)
|
|
{
|
|
component += strlen(component) + 1;
|
|
}
|
|
|
|
/* address always is same buffer as the one in the jack_reset_all_params() stack */
|
|
dst = (char *)component;
|
|
|
|
len = strlen(child) + 1;
|
|
memcpy(dst, child, len);
|
|
dst[len] = 0;
|
|
|
|
if (leaf)
|
|
{
|
|
if (!jack_proxy_reset_parameter_value(address))
|
|
{
|
|
log_error("cannot reset value of parameter");
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!jack_proxy_read_conf_container(address, context, reset_callback))
|
|
{
|
|
log_error("cannot read container");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
*dst = 0;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool jack_reset_all_params(void)
|
|
{
|
|
char address[1024] = "";
|
|
|
|
return jack_proxy_read_conf_container(address, NULL, reset_callback);
|
|
}
|
|
|
|
struct jack_proxy_session_save_one_reply_cookie
|
|
{
|
|
void * context;
|
|
void (* callback)(void * context, const char * commandline);
|
|
};
|
|
|
|
#define cookie_ptr ((struct jack_proxy_session_save_one_reply_cookie *)void_cookie)
|
|
|
|
static void jack_proxy_session_save_one_handle_reply(void * UNUSED(context), void * void_cookie, DBusMessage * reply_ptr)
|
|
{
|
|
const char * reply_signature;
|
|
DBusMessageIter top_iter;
|
|
DBusMessageIter array_iter;
|
|
DBusMessageIter struct_iter;
|
|
const char * uuid;
|
|
const char * client_name;
|
|
const char * commandline;
|
|
uint32_t flags;
|
|
|
|
if (reply_ptr == NULL)
|
|
{
|
|
cookie_ptr->callback(cookie_ptr->context, NULL);
|
|
return;
|
|
}
|
|
|
|
reply_signature = dbus_message_get_signature(reply_ptr);
|
|
|
|
if (strcmp(reply_signature, "a(sssu)") != 0)
|
|
{
|
|
log_error(JACKDBUS_IFACE_SESSMGR ".Notify() reply signature mismatch. '%s'", reply_signature);
|
|
return;
|
|
}
|
|
|
|
dbus_message_iter_init(reply_ptr, &top_iter);
|
|
|
|
commandline = NULL;
|
|
|
|
for (dbus_message_iter_recurse(&top_iter, &array_iter);
|
|
dbus_message_iter_get_arg_type(&array_iter) != DBUS_TYPE_INVALID;
|
|
dbus_message_iter_next(&array_iter))
|
|
{
|
|
if (commandline != NULL)
|
|
{
|
|
log_error(JACKDBUS_IFACE_SESSMGR ".Notify() save returned more than one command");
|
|
return;
|
|
}
|
|
|
|
dbus_message_iter_recurse(&array_iter, &struct_iter);
|
|
|
|
dbus_message_iter_get_basic(&struct_iter, &uuid);
|
|
dbus_message_iter_next(&struct_iter);
|
|
|
|
dbus_message_iter_get_basic(&struct_iter, &client_name);
|
|
dbus_message_iter_next(&struct_iter);
|
|
|
|
dbus_message_iter_get_basic(&struct_iter, &commandline);
|
|
dbus_message_iter_next(&struct_iter);
|
|
|
|
ASSERT(commandline != NULL);
|
|
|
|
dbus_message_iter_get_basic(&struct_iter, &flags);
|
|
dbus_message_iter_next(&struct_iter);
|
|
|
|
dbus_message_iter_next(&struct_iter);
|
|
}
|
|
|
|
if (commandline == NULL)
|
|
{
|
|
log_error(JACKDBUS_IFACE_SESSMGR ".Notify() save returned no commands");
|
|
return;
|
|
}
|
|
|
|
cookie_ptr->callback(cookie_ptr->context, commandline);
|
|
}
|
|
|
|
#undef cookie_ptr
|
|
|
|
bool
|
|
jack_proxy_session_save_one(
|
|
bool queue,
|
|
const char * target,
|
|
const char * path,
|
|
void * callback_context,
|
|
void (* completion_callback)(
|
|
void * context,
|
|
const char * commandline))
|
|
{
|
|
bool ret;
|
|
dbus_bool_t dbus_bool;
|
|
dbus_uint32_t type;
|
|
DBusMessage * request_ptr;
|
|
struct jack_proxy_session_save_one_reply_cookie cookie;
|
|
|
|
dbus_bool = queue;
|
|
type = JACKDBUS_SESSION_NOTIFY_TYPE_SAVE;
|
|
|
|
request_ptr = cdbus_new_method_call_message(
|
|
JACKDBUS_SERVICE_NAME,
|
|
JACKDBUS_OBJECT_PATH,
|
|
JACKDBUS_IFACE_SESSMGR,
|
|
"Notify",
|
|
"bsus",
|
|
&dbus_bool,
|
|
&target,
|
|
&type,
|
|
&path,
|
|
NULL);
|
|
if (request_ptr == NULL)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
cookie.context = callback_context;
|
|
cookie.callback = completion_callback;
|
|
|
|
ret = cdbus_call_async(request_ptr, callback_context, &cookie, sizeof(cookie), jack_proxy_session_save_one_handle_reply);
|
|
|
|
dbus_message_unref(request_ptr);
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool
|
|
jack_proxy_session_has_callback(
|
|
const char * client,
|
|
bool * has_callback_ptr)
|
|
{
|
|
dbus_bool_t has_callback;
|
|
|
|
if (!cdbus_call(0, JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_SESSMGR, "HasSessionCallback", "s", &client, "b", &has_callback))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
*has_callback_ptr = has_callback;
|
|
return true;
|
|
}
|
|
|
|
bool jack_proxy_exit(void)
|
|
{
|
|
if (!cdbus_call(0, JACKDBUS_SERVICE_NAME, JACKDBUS_OBJECT_PATH, JACKDBUS_IFACE_CONTROL, "Exit", "", ""))
|
|
{
|
|
log_error("Exit() failed.");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|