276 lines
6.8 KiB
C
276 lines
6.8 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) 2008,2009,2010,2011,2012 Nedko Arnaudov <nedko@arnaudov.name>
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*
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**************************************************************************
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* This file contains code that interface with a2jmidid 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 "a2j_proxy.h"
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#define A2J_SERVICE "org.gna.home.a2jmidid"
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#define A2J_OBJECT "/"
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#define A2J_IFACE_CONTROL "org.gna.home.a2jmidid.control"
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static bool g_a2j_started = false;
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static char * g_a2j_jack_client_name = NULL;
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static
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void
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on_a2j_bridge_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_info("a2j bridge start detected.");
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if (g_a2j_jack_client_name != NULL)
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{
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free(g_a2j_jack_client_name);
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g_a2j_jack_client_name = NULL;
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}
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g_a2j_started = true;
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}
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static
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void
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on_a2j_bridge_stopped(
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void * UNUSED(context),
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DBusMessage * UNUSED(message_ptr))
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{
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if (g_a2j_jack_client_name != NULL)
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{
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free(g_a2j_jack_client_name);
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g_a2j_jack_client_name = NULL;
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}
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g_a2j_started = false;
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log_info("a2j bridge stop detected.");
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}
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static void on_a2j_life_status_changed(bool appeared)
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{
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if (appeared)
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{
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log_info("a2j activatation detected.");
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}
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else
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{
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log_info("a2j deactivatation detected.");
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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_signal_hooks[] =
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{
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{"bridge_started", on_a2j_bridge_started},
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{"bridge_stopped", on_a2j_bridge_stopped},
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{NULL, NULL}
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};
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bool a2j_proxy_init(void)
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{
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g_a2j_started = a2j_proxy_is_started();
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if (g_a2j_started)
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{
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a2j_proxy_get_jack_client_name_noncached(&g_a2j_jack_client_name);
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}
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if (!cdbus_register_service_lifetime_hook(cdbus_g_dbus_connection, A2J_SERVICE, on_a2j_life_status_changed))
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{
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log_error("dbus_register_service_lifetime_hook() failed for a2j 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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A2J_SERVICE,
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A2J_OBJECT,
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A2J_IFACE_CONTROL,
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NULL,
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g_signal_hooks))
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{
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cdbus_unregister_service_lifetime_hook(cdbus_g_dbus_connection, A2J_SERVICE);
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log_error("dbus_register_object_signal_hooks() failed for a2j control interface");
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return false;
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}
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return true;
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}
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void a2j_proxy_uninit(void)
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{
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cdbus_unregister_object_signal_hooks(cdbus_g_dbus_connection, A2J_SERVICE, A2J_OBJECT, A2J_IFACE_CONTROL);
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cdbus_unregister_service_lifetime_hook(cdbus_g_dbus_connection, A2J_SERVICE);
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}
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const char * a2j_proxy_get_jack_client_name_cached(void)
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{
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if (g_a2j_jack_client_name == NULL)
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{
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a2j_proxy_get_jack_client_name_noncached(&g_a2j_jack_client_name);
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}
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return g_a2j_jack_client_name;
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}
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bool a2j_proxy_get_jack_client_name_noncached(char ** client_name_ptr_ptr)
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{
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DBusMessage * reply_ptr;
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const char * name;
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if (!cdbus_call(0, A2J_SERVICE, A2J_OBJECT, A2J_IFACE_CONTROL, "get_jack_client_name", "", NULL, &reply_ptr))
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{
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//log_error("a2j::get_jack_client_name() failed.");
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return false;
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}
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if (!dbus_message_get_args(reply_ptr, &cdbus_g_dbus_error, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID))
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{
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dbus_message_unref(reply_ptr);
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dbus_error_free(&cdbus_g_dbus_error);
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log_error("decoding reply of get_jack_client_name failed.");
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return false;
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}
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*client_name_ptr_ptr = strdup(name);
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dbus_message_unref(reply_ptr);
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if (*client_name_ptr_ptr == NULL)
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{
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log_error("strdup() failed for a2j jack client name string");
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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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a2j_proxy_map_jack_port(
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const char * jack_port_name,
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char ** alsa_client_name_ptr_ptr,
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char ** alsa_port_name_ptr_ptr,
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uint32_t * alsa_client_id_ptr)
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{
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DBusMessage * reply_ptr;
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dbus_uint32_t alsa_client_id;
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dbus_uint32_t alsa_port_id;
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const char * alsa_client_name;
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const char * alsa_port_name;
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if (!cdbus_call(0, A2J_SERVICE, A2J_OBJECT, A2J_IFACE_CONTROL, "map_jack_port_to_alsa", "s", &jack_port_name, NULL, &reply_ptr))
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{
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log_error("a2j::map_jack_port_to_alsa() failed.");
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return false;
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}
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if (!dbus_message_get_args(
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reply_ptr,
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&cdbus_g_dbus_error,
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DBUS_TYPE_UINT32,
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&alsa_client_id,
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DBUS_TYPE_UINT32,
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&alsa_port_id,
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DBUS_TYPE_STRING,
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&alsa_client_name,
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DBUS_TYPE_STRING,
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&alsa_port_name,
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DBUS_TYPE_INVALID))
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{
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dbus_message_unref(reply_ptr);
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dbus_error_free(&cdbus_g_dbus_error);
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log_error("decoding reply of map_jack_port_to_alsa failed.");
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return false;
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}
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*alsa_client_name_ptr_ptr = strdup(alsa_client_name);
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if (*alsa_client_name_ptr_ptr == NULL)
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{
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dbus_message_unref(reply_ptr);
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log_error("strdup() failed for a2j alsa client name string");
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return false;
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}
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*alsa_port_name_ptr_ptr = strdup(alsa_port_name);
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if (*alsa_port_name_ptr_ptr == NULL)
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{
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dbus_message_unref(reply_ptr);
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log_error("strdup() failed for a2j alsa port name string");
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free(*alsa_client_name_ptr_ptr);
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return false;
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}
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*alsa_client_id_ptr = alsa_client_id;
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dbus_message_unref(reply_ptr);
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return true;
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}
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bool a2j_proxy_is_started(void)
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{
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dbus_bool_t started;
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if (!cdbus_call(0, A2J_SERVICE, A2J_OBJECT, A2J_IFACE_CONTROL, "is_started", "", "b", &started))
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{
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log_error("a2j::is_started() failed.");
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return false;
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}
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return started;
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}
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bool a2j_proxy_start_bridge(void)
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{
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if (!cdbus_call(0, A2J_SERVICE, A2J_OBJECT, A2J_IFACE_CONTROL, "start", "", ""))
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{
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log_error("a2j::start() failed.");
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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 a2j_proxy_stop_bridge(void)
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{
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if (!cdbus_call(0, A2J_SERVICE, A2J_OBJECT, A2J_IFACE_CONTROL, "stop", "", ""))
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{
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log_error("a2j::stop() failed.");
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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 a2j_proxy_exit(void)
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{
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if (!cdbus_call(0, A2J_SERVICE, A2J_OBJECT, A2J_IFACE_CONTROL, "exit", "", ""))
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{
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log_error("exit() failed.");
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return false;
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}
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return true;
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}
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