mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-04 16:39:39 +00:00
126 lines
3.4 KiB
C
126 lines
3.4 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2000 Wim Taymans <wtay@chello.be>
|
|
*
|
|
* gstpluginfeature.c: Abstract base class for all plugin features
|
|
*
|
|
* 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 "gst_private.h"
|
|
#include "gstpluginfeature.h"
|
|
#include "gstplugin.h"
|
|
#include "gstregistry.h"
|
|
#include "gstlog.h"
|
|
|
|
static void gst_plugin_feature_class_init (GstPluginFeatureClass *klass);
|
|
static void gst_plugin_feature_init (GstPluginFeature *feature);
|
|
|
|
static GObjectClass *parent_class = NULL;
|
|
/* static guint gst_plugin_feature_signals[LAST_SIGNAL] = { 0 }; */
|
|
|
|
GType
|
|
gst_plugin_feature_get_type (void)
|
|
{
|
|
static GType plugin_feature_type = 0;
|
|
|
|
if (!plugin_feature_type) {
|
|
static const GTypeInfo plugin_feature_info = {
|
|
sizeof (GObjectClass),
|
|
NULL,
|
|
NULL,
|
|
(GClassInitFunc) gst_plugin_feature_class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof (GObject),
|
|
32,
|
|
(GInstanceInitFunc) gst_plugin_feature_init,
|
|
NULL
|
|
};
|
|
plugin_feature_type = g_type_register_static (G_TYPE_OBJECT, "GstPluginFeature",
|
|
&plugin_feature_info, G_TYPE_FLAG_ABSTRACT);
|
|
}
|
|
return plugin_feature_type;
|
|
}
|
|
|
|
static void
|
|
gst_plugin_feature_class_init (GstPluginFeatureClass *klass)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
|
|
gobject_class = (GObjectClass*) klass;
|
|
|
|
parent_class = g_type_class_ref (G_TYPE_OBJECT);
|
|
}
|
|
|
|
static void
|
|
gst_plugin_feature_init (GstPluginFeature *feature)
|
|
{
|
|
feature->manager = NULL;
|
|
}
|
|
|
|
/**
|
|
* gst_plugin_feature_ensure_loaded:
|
|
* @feature: the plugin feature to check
|
|
*
|
|
* Check if the plugin containing the feature is loaded,
|
|
* if not, the plugin will be loaded.
|
|
*
|
|
* Returns: a boolean indicating the feature is loaded.
|
|
*/
|
|
gboolean
|
|
gst_plugin_feature_ensure_loaded (GstPluginFeature *feature)
|
|
{
|
|
GstPlugin *plugin = (GstPlugin *) (feature->manager);
|
|
|
|
g_assert (feature);
|
|
if (plugin && !gst_plugin_is_loaded (plugin)) {
|
|
if (GST_IS_REGISTRY (plugin->manager)) {
|
|
GST_DEBUG (GST_CAT_PLUGIN_LOADING,
|
|
"loading plugin %s for feature", plugin->name);
|
|
|
|
if (gst_registry_load_plugin (GST_REGISTRY (plugin->manager), plugin) != GST_REGISTRY_OK)
|
|
return FALSE;
|
|
}
|
|
else
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_plugin_feature_unload_thyself:
|
|
* @feature: the plugin feature to check
|
|
*
|
|
* Unload the given feature. This will decrease the refcount
|
|
* in the plugin and will eventually unload the plugin
|
|
*/
|
|
void
|
|
gst_plugin_feature_unload_thyself (GstPluginFeature *feature)
|
|
{
|
|
GstPluginFeatureClass *oclass;
|
|
|
|
g_return_if_fail (feature != NULL);
|
|
g_return_if_fail (GST_IS_PLUGIN_FEATURE (feature));
|
|
|
|
oclass = (GstPluginFeatureClass *)G_OBJECT_GET_CLASS (feature);
|
|
|
|
if (oclass->unload_thyself)
|
|
oclass->unload_thyself (feature);
|
|
}
|
|
|
|
|
|
|