mirror of git://git.sysmocom.de/ofono
224 lines
5.0 KiB
C
224 lines
5.0 KiB
C
/*
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*
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* oFono - Open Source Telephony
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*
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* Copyright (C) 2013 Intel Corporation. All rights reserved.
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*
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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 version 2 as
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* published by the Free Software Foundation.
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*
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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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*
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <gdbus.h>
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#include <ofono/handsfree-audio.h>
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#include "ofono.h"
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#define HFP_AUDIO_MANAGER_INTERFACE OFONO_SERVICE ".HandsfreeAudioManager"
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#define HFP_AUDIO_AGENT_INTERFACE OFONO_SERVICE ".HandsfreeAudioAgent"
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/* Supported agent codecs */
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enum hfp_codec {
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HFP_CODEC_CVSD = 0x01,
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HFP_CODEC_MSBC = 0x02,
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};
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struct agent {
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char *owner;
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char *path;
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unsigned char *codecs;
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int codecs_len;
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guint watch;
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};
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static struct agent *agent = NULL;
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static int ref_count = 0;
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static void agent_free(struct agent *agent)
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{
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if (agent->watch > 0)
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g_dbus_remove_watch(ofono_dbus_get_connection(), agent->watch);
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g_free(agent->owner);
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g_free(agent->path);
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g_free(agent->codecs);
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g_free(agent);
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}
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static void agent_release(struct agent *agent)
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{
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DBusMessage *msg;
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msg = dbus_message_new_method_call(agent->owner, agent->path,
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HFP_AUDIO_AGENT_INTERFACE, "Release");
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g_dbus_send_message(ofono_dbus_get_connection(), msg);
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}
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static void agent_disconnect(DBusConnection *conn, void *user_data)
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{
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DBG("Agent %s disconnected", agent->owner);
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agent_free(agent);
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agent = NULL;
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}
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static DBusMessage *am_get_cards(DBusConnection *conn,
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DBusMessage *msg, void *user_data)
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{
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return __ofono_error_not_implemented(msg);
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}
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static DBusMessage *am_agent_register(DBusConnection *conn,
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DBusMessage *msg, void *user_data)
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{
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const char *sender, *path;
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unsigned char *codecs;
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DBusMessageIter iter, array;
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int length, i;
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if (agent)
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return __ofono_error_in_use(msg);
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sender = dbus_message_get_sender(msg);
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if (dbus_message_iter_init(msg, &iter) == FALSE)
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return __ofono_error_invalid_args(msg);
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dbus_message_iter_get_basic(&iter, &path);
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dbus_message_iter_next(&iter);
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dbus_message_iter_recurse(&iter, &array);
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dbus_message_iter_get_fixed_array(&array, &codecs, &length);
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if (length == 0)
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return __ofono_error_invalid_args(msg);
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for (i = 0; i < length; i++) {
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if (codecs[i] != HFP_CODEC_CVSD &&
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codecs[i] != HFP_CODEC_MSBC)
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return __ofono_error_invalid_args(msg);
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}
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agent = g_new0(struct agent, 1);
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agent->owner = g_strdup(sender);
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agent->path = g_strdup(path);
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agent->codecs = g_memdup(codecs, length);
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agent->codecs_len = length;
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agent->watch = g_dbus_add_disconnect_watch(conn, sender,
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agent_disconnect, NULL, NULL);
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return dbus_message_new_method_return(msg);
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}
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static DBusMessage *am_agent_unregister(DBusConnection *conn,
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DBusMessage *msg, void *user_data)
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{
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const char *sender, *path;
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DBusMessageIter iter;
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if (agent == NULL)
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return __ofono_error_not_found(msg);
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sender = dbus_message_get_sender(msg);
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if (dbus_message_iter_init(msg, &iter) == FALSE)
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return __ofono_error_invalid_args(msg);
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dbus_message_iter_get_basic(&iter, &path);
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if (strcmp(sender, agent->owner) != 0)
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return __ofono_error_not_allowed(msg);
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if (strcmp(path, agent->path) != 0)
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return __ofono_error_not_found(msg);
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agent_free(agent);
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agent = NULL;
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return dbus_message_new_method_return(msg);
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}
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static const GDBusMethodTable am_methods[] = {
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{ GDBUS_METHOD("GetCards",
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NULL, GDBUS_ARGS({"cards", "a{oa{sv}}"}),
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am_get_cards) } ,
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{ GDBUS_METHOD("Register",
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GDBUS_ARGS({"path", "o"}, {"codecs", "ay"}), NULL,
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am_agent_register) },
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{ GDBUS_METHOD("Unregister",
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GDBUS_ARGS({"path", "o"}), NULL,
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am_agent_unregister) },
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{ }
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};
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void ofono_handsfree_audio_ref(void)
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{
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ref_count += 1;
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if (ref_count != 1)
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return;
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if (!g_dbus_register_interface(ofono_dbus_get_connection(),
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"/", HFP_AUDIO_MANAGER_INTERFACE,
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am_methods, NULL, NULL, NULL, NULL))
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ofono_error("Unable to register Handsfree Audio Manager");
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}
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void ofono_handsfree_audio_unref(void)
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{
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if (ref_count == 0) {
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ofono_error("Error in handsfree audio manager ref counting");
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return;
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}
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ref_count -= 1;
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if (ref_count > 0)
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return;
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g_dbus_unregister_interface(ofono_dbus_get_connection(), "/",
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HFP_AUDIO_MANAGER_INTERFACE);
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if (agent) {
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agent_release(agent);
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agent_free(agent);
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}
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}
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int __ofono_handsfree_audio_manager_init(void)
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{
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return 0;
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}
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void __ofono_handsfree_audio_manager_cleanup(void)
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{
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if (ref_count == 0)
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return;
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ofono_error("Handsfree Audio manager not cleaned up properly,"
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"fixing...");
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ref_count = 1;
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ofono_handsfree_audio_unref();
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}
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