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/* GStreamer
* Copyright (C) 2008 Wim Taymans <wim.taymans at gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "rtsp-session-pool.h"
#undef DEBUG
G_DEFINE_TYPE (GstRTSPSessionPool, gst_rtsp_session_pool, G_TYPE_OBJECT);
static void
gst_rtsp_session_pool_class_init (GstRTSPSessionPoolClass * klass)
{
GObjectClass *gobject_class;
gobject_class = G_OBJECT_CLASS (klass);
}
static void
gst_rtsp_session_pool_init (GstRTSPSessionPool * pool)
{
pool->lock = g_mutex_new ();
pool->sessions = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, NULL);
}
/**
* gst_rtsp_session_pool_new:
*
* Create a new #GstRTSPSessionPool instance.
*/
GstRTSPSessionPool *
gst_rtsp_session_pool_new (void)
{
GstRTSPSessionPool *result;
result = g_object_new (GST_TYPE_RTSP_SESSION_POOL, NULL);
return result;
}
/**
* gst_rtsp_session_pool_find:
* @pool: the pool to search
* @sessionid: the session id
*
* Find the session with @sessionid in @pool.
*
* Returns: the #GstRTSPSession with @sessionid or %NULL when the session did
* not exist. g_object_unref() after usage.
*/
GstRTSPSession *
gst_rtsp_session_pool_find (GstRTSPSessionPool *pool, const gchar *sessionid)
{
GstRTSPSession *result;
g_return_val_if_fail (GST_IS_RTSP_SESSION_POOL (pool), NULL);
g_return_val_if_fail (sessionid != NULL, NULL);
g_mutex_lock (pool->lock);
result = g_hash_table_lookup (pool->sessions, sessionid);
if (result)
g_object_ref (result);
g_mutex_unlock (pool->lock);
return result;
}
static gchar *
create_session_id (void)
{
gchar id[16];
gint i;
for (i = 0; i < 16; i++) {
id[i] = g_random_int_range ('a', 'z');
}
return g_strndup (id, 16);
}
/**
* gst_rtsp_session_pool_create:
* @pool: a #GstRTSPSessionPool
*
* Create a new #GstRTSPSession object in @pool.
*
* Returns: a new #GstRTSPSession.
*/
GstRTSPSession *
gst_rtsp_session_pool_create (GstRTSPSessionPool *pool)
{
GstRTSPSession *result = NULL;
gchar *id;
g_return_val_if_fail (GST_IS_RTSP_SESSION_POOL (pool), NULL);
do {
/* start by creating a new random session id, we assume that this is random
* enough to not cause a collision, which we will check later */
id = create_session_id ();
g_mutex_lock (pool->lock);
/* check if the sessionid existed */
result = g_hash_table_lookup (pool->sessions, id);
if (result) {
/* found, retry with a different session id*/
result = NULL;
}
else {
/* not found, create session and insert it in the pool */
result = gst_rtsp_session_new (id);
/* take additional ref for the pool */
g_object_ref (result);
g_hash_table_insert (pool->sessions, result->sessionid, result);
}
g_mutex_unlock (pool->lock);
g_free (id);
} while (result == NULL);
return result;
}
/**
* gst_rtsp_session_pool_remove:
* @pool: a #GstRTSPSessionPool
* @sess: a #GstRTSPSession
*
* Remove @sess from @pool and Clean it up.
*
* Returns: a new #GstRTSPSession.
*/
void
gst_rtsp_session_pool_remove (GstRTSPSessionPool *pool, GstRTSPSession *sess)
{
gboolean found;
g_return_if_fail (GST_IS_RTSP_SESSION_POOL (pool));
g_return_if_fail (GST_IS_RTSP_SESSION (sess));
g_mutex_lock (pool->lock);
found = g_hash_table_remove (pool->sessions, sess);
g_mutex_unlock (pool->lock);
if (found) {
g_object_unref (sess);
}
}
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