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126 lines
3.4 KiB
C
126 lines
3.4 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstpluginfeature.c: Abstract base class for all plugin features
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "gst_private.h"
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#include "gstpluginfeature.h"
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#include "gstplugin.h"
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#include "gstregistry.h"
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#include "gstlog.h"
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static void gst_plugin_feature_class_init (GstPluginFeatureClass *klass);
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static void gst_plugin_feature_init (GstPluginFeature *feature);
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static GObjectClass *parent_class = NULL;
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/* static guint gst_plugin_feature_signals[LAST_SIGNAL] = { 0 }; */
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GType
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gst_plugin_feature_get_type (void)
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{
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static GType plugin_feature_type = 0;
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if (!plugin_feature_type) {
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static const GTypeInfo plugin_feature_info = {
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sizeof (GObjectClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_plugin_feature_class_init,
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NULL,
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NULL,
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sizeof (GObject),
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32,
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(GInstanceInitFunc) gst_plugin_feature_init,
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NULL
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};
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plugin_feature_type = g_type_register_static (G_TYPE_OBJECT, "GstPluginFeature",
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&plugin_feature_info, G_TYPE_FLAG_ABSTRACT);
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}
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return plugin_feature_type;
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}
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static void
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gst_plugin_feature_class_init (GstPluginFeatureClass *klass)
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{
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GObjectClass *gobject_class;
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gobject_class = (GObjectClass*) klass;
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parent_class = g_type_class_ref (G_TYPE_OBJECT);
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}
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static void
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gst_plugin_feature_init (GstPluginFeature *feature)
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{
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feature->manager = NULL;
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}
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/**
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* gst_plugin_feature_ensure_loaded:
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* @feature: the plugin feature to check
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*
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* Check if the plugin containing the feature is loaded,
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* if not, the plugin will be loaded.
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*
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* Returns: a boolean indicating the feature is loaded.
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*/
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gboolean
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gst_plugin_feature_ensure_loaded (GstPluginFeature *feature)
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{
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GstPlugin *plugin = (GstPlugin *) (feature->manager);
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g_assert (feature);
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if (plugin && !gst_plugin_is_loaded (plugin)) {
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if (GST_IS_REGISTRY (plugin->manager)) {
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GST_DEBUG (GST_CAT_PLUGIN_LOADING,
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"loading plugin %s for feature", plugin->name);
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if (gst_registry_load_plugin (GST_REGISTRY (plugin->manager), plugin) != GST_REGISTRY_OK)
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return FALSE;
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}
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else
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return FALSE;
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}
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return TRUE;
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}
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/**
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* gst_plugin_feature_unload_thyself:
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* @feature: the plugin feature to check
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*
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* Unload the given feature. This will decrease the refcount
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* in the plugin and will eventually unload the plugin
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*/
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void
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gst_plugin_feature_unload_thyself (GstPluginFeature *feature)
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{
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GstPluginFeatureClass *oclass;
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g_return_if_fail (feature != NULL);
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g_return_if_fail (GST_IS_PLUGIN_FEATURE (feature));
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oclass = (GstPluginFeatureClass *)G_OBJECT_GET_CLASS (feature);
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if (oclass->unload_thyself)
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oclass->unload_thyself (feature);
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}
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