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sessionpool: add function to filter sessions

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Add generic function to retrieve/remove sessions.
This commit is contained in:
Wim Taymans 2009-06-30 21:27:53 +02:00 committed by Wim Taymans
parent a403469a03
commit a4c90c28c7
2 changed files with 110 additions and 0 deletions
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68
gst/rtsp-server/rtsp-session-pool.c
View file

@ -380,6 +380,74 @@ gst_rtsp_session_pool_cleanup (GstRTSPSessionPool *pool)
return result;
}
typedef struct
{
GstRTSPSessionPool *pool;
GstRTSPSessionFilterFunc func;
gpointer user_data;
GList *list;
} FilterData;
static gboolean
filter_func (gchar *sessionid, GstRTSPSession *sess, FilterData *data)
{
switch (data->func (data->pool, sess, data->user_data)) {
case GST_RTSP_FILTER_REMOVE:
return TRUE;
case GST_RTSP_FILTER_REF:
/* keep ref */
data->list = g_list_prepend (data->list, g_object_ref (sess));
/* fallthrough */
default:
case GST_RTSP_FILTER_KEEP:
return FALSE;
}
}
/**
* gst_rtsp_session_pool_filter:
* @pool: a #GstRTSPSessionPool
* @func: a callback
* @user_data: user data passed to @func
*
* Call @func for each session in @pool. The result value of @func determines
* what happens to the session. @func will be called with the session pool
* locked so no further actions on @pool can be performed from @func.
*
* If @func returns #GST_RTSP_FILTER_REMOVE, the session will be removed from
* @pool.
*
* If @func returns #GST_RTSP_FILTER_KEEP, the session will remain in @pool.
*
* If @func returns #GST_RTSP_FILTER_REF, the session will remain in @pool but
* will also be added with an additional ref to the result GList of this
* function..
*
* Returns: a GList with all sessions for which @func returned
* #GST_RTSP_FILTER_REF. After usage, each element in the GList should be unreffed
* before the list is freed.
*/
GList *
gst_rtsp_session_pool_filter (GstRTSPSessionPool *pool,
GstRTSPSessionFilterFunc func, gpointer user_data)
{
FilterData data;
g_return_val_if_fail (GST_IS_RTSP_SESSION_POOL (pool), NULL);
g_return_val_if_fail (func != NULL, NULL);
data.pool = pool;
data.func = func;
data.user_data = user_data;
data.list = NULL;
g_mutex_lock (pool->lock);
g_hash_table_foreach_remove (pool->sessions, (GHRFunc) filter_func, &data);
g_mutex_unlock (pool->lock);
return data.list;
}
typedef struct
{
GSource source;

42
gst/rtsp-server/rtsp-session-pool.h
View file

@ -81,6 +81,45 @@ struct _GstRTSPSessionPoolClass {
*/
typedef gboolean (*GstRTSPSessionPoolFunc) (GstRTSPSessionPool *pool, gpointer user_data);
/**
* GstRTSPFilterResult:
* @GST_RTSP_FILTER_REMOVE: Remove session
* @GST_RTSP_FILTER_KEEP: Keep session in the pool
* @GST_RTSP_FILTER_REF: Ref session in the result list
*
* Possible return values for gst_rtsp_session_pool_filter().
*/
typedef enum
{
GST_RTSP_FILTER_REMOVE,
GST_RTSP_FILTER_KEEP,
GST_RTSP_FILTER_REF,
} GstRTSPFilterResult;
/**
* GstRTSPSessionFilterFunc:
* @pool: a #GstRTSPSessionPool object
* @session: a #GstRTSPSession in @pool
* @user_data: user data that has been given to gst_rtsp_session_pool_filter()
*
* This function will be called by the gst_rtsp_session_pool_filter(). An
* implementation should return a value of #GstRTSPFilterResult.
*
* When this function returns #GST_RTSP_FILTER_REMOVE, @session will be removed
* from @pool.
*
* A return value of #GST_RTSP_FILTER_KEEP will leave @session untouched in
* @pool.
*
* A value of GST_RTSP_FILTER_REF will add @session to the result #GList of
* gst_rtsp_session_pool_filter().
*
* Returns: a #GstRTSPFilterResult.
*/
typedef GstRTSPFilterResult (*GstRTSPSessionFilterFunc) (GstRTSPSessionPool *pool,
GstRTSPSession *session,
gpointer user_data);
GType gst_rtsp_session_pool_get_type (void);
@ -101,6 +140,9 @@ gboolean gst_rtsp_session_pool_remove (GstRTSPSessionPoo
GstRTSPSession *sess);
/* perform session maintenance */
GList * gst_rtsp_session_pool_filter (GstRTSPSessionPool *pool,
GstRTSPSessionFilterFunc func,
gpointer user_data);
guint gst_rtsp_session_pool_cleanup (GstRTSPSessionPool *pool);
GSource * gst_rtsp_session_pool_create_watch (GstRTSPSessionPool *pool);