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/*
* This file is part of the Nice GLib ICE library.
*
* (C) 2006-2009 Collabora Ltd.
* Contact: Youness Alaoui
* (C) 2006-2009 Nokia Corporation. All rights reserved.
* Contact: Kai Vehmanen
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Nice GLib ICE library.
*
* The Initial Developers of the Original Code are Collabora Ltd and Nokia
* Corporation. All Rights Reserved.
*
* Contributors:
* Dafydd Harries, Collabora Ltd.
* Youness Alaoui, Collabora Ltd.
*
* Alternatively, the contents of this file may be used under the terms of the
* the GNU Lesser General Public License Version 2.1 (the "LGPL"), in which
* case the provisions of LGPL are applicable instead of those above. If you
* wish to allow use of your version of this file only under the terms of the
* LGPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replace
* them with the notice and other provisions required by the LGPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the LGPL.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include "stream.h"
/* Simple tracking for the number of alive streams. These must be accessed
* atomically. */
static volatile unsigned int n_streams_created = 0;
static volatile unsigned int n_streams_destroyed = 0;
G_DEFINE_TYPE (NiceStream, nice_stream, G_TYPE_OBJECT);
static void
nice_stream_finalize (GObject *obj);
/*
* @file stream.c
* @brief ICE stream functionality
*/
NiceStream *
nice_stream_new (guint stream_id, guint n_components, NiceAgent *agent)
{
NiceStream *stream = NULL;
guint n;
stream = g_object_new (NICE_TYPE_STREAM, NULL);
stream->id = stream_id;
/* Create the components. */
for (n = 0; n < n_components; n++) {
NiceComponent *component = NULL;
component = nice_component_new (n + 1, agent, stream);
stream->components = g_slist_append (stream->components, component);
}
stream->n_components = n_components;
return stream;
}
void
nice_stream_close (NiceStream *stream)
{
GSList *i;
for (i = stream->components; i; i = i->next) {
NiceComponent *component = i->data;
nice_component_close (component);
}
}
NiceComponent *
nice_stream_find_component_by_id (NiceStream *stream, guint id)
{
GSList *i;
for (i = stream->components; i; i = i->next) {
NiceComponent *component = i->data;
if (component && component->id == id)
return component;
}
return NULL;
}
/*
* Initialized the local crendentials for the stream.
*/
void
nice_stream_initialize_credentials (NiceStream *stream, NiceRNG *rng)
{
/* note: generate ufrag/pwd for the stream (see ICE 15.4.
* '"ice-ufrag" and "ice-pwd" Attributes', ID-19) */
nice_rng_generate_bytes_print (rng, NICE_STREAM_DEF_UFRAG - 1, stream->local_ufrag);
nice_rng_generate_bytes_print (rng, NICE_STREAM_DEF_PWD - 1, stream->local_password);
}
/*
* Resets the stream state to that of a ICE restarted
* session.
*/
void
nice_stream_restart (NiceStream *stream, NiceAgent *agent)
{
GSList *i;
/* step: clean up all connectivity checks */
conn_check_prune_stream (agent, stream);
stream->initial_binding_request_received = FALSE;
nice_stream_initialize_credentials (stream, agent->rng);
for (i = stream->components; i; i = i->next) {
NiceComponent *component = i->data;
nice_component_restart (component);
}
}
static void
nice_stream_class_init (NiceStreamClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = nice_stream_finalize;
}
static void
nice_stream_init (NiceStream *stream)
{
g_atomic_int_inc (&n_streams_created);
nice_debug ("Created NiceStream (%u created, %u destroyed)",
n_streams_created, n_streams_destroyed);
stream->n_components = 0;
stream->initial_binding_request_received = FALSE;
}
/* Must be called with the agent lock released as it could dispose of
* NiceIOStreams. */
static void
nice_stream_finalize (GObject *obj)
{
NiceStream *stream;
stream = NICE_STREAM (obj);
g_free (stream->name);
g_slist_free_full (stream->components, (GDestroyNotify) g_object_unref);
g_atomic_int_inc (&n_streams_destroyed);
nice_debug ("Destroyed NiceStream (%u created, %u destroyed)",
n_streams_created, n_streams_destroyed);
G_OBJECT_CLASS (nice_stream_parent_class)->finalize (obj);
}
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