mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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12bbbd5c1e
Original commit message from CVS: Lots of modifications to the plugin system. - Added a GstPluginfeature object that serves as a base class for all plugin contents. - changed the plugin API, everyhting is now added with gst_plugin_add_feature - typefactories are named now so that they can be located easily and filled in at plugin load. - mime types like "video/raw image/raw" are gone for now. - lots of plugin updates (style and API changes) - tested with an without registry. - updates to various tools. - added a little testsuite to test/show how you can load plugins (4 modes) Test this one, Almost everything has changed :-)
134 lines
3.8 KiB
C
134 lines
3.8 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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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 xmlNodePtr gst_plugin_feature_save_thyself (GstObject *object, xmlNodePtr parent);
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static void gst_plugin_feature_restore_thyself (GstObject *object, xmlNodePtr parent);
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static GstObjectClass *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 (GstObjectClass),
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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 (GstObject),
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32,
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(GInstanceInitFunc) gst_plugin_feature_init,
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};
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plugin_feature_type = g_type_register_static (GST_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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GstObjectClass *gstobject_class;
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gobject_class = (GObjectClass*) klass;
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gstobject_class = (GstObjectClass*) klass;
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parent_class = g_type_class_ref (GST_TYPE_OBJECT);
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gstobject_class->save_thyself = GST_DEBUG_FUNCPTR (gst_plugin_feature_save_thyself);
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gstobject_class->restore_thyself = GST_DEBUG_FUNCPTR (gst_plugin_feature_restore_thyself);
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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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static xmlNodePtr
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gst_plugin_feature_save_thyself (GstObject *object, xmlNodePtr parent)
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{
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g_return_val_if_fail (GST_IS_PLUGIN_FEATURE (object), parent);
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xmlNewChild (parent, NULL, "name", GST_OBJECT_NAME (object));
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return parent;
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}
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static void
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gst_plugin_feature_restore_thyself (GstObject *object, xmlNodePtr parent)
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{
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xmlNodePtr field = parent->xmlChildrenNode;
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g_return_if_fail (GST_IS_PLUGIN_FEATURE (object));
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while (field) {
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if (!strcmp (field->name, "name")) {
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gst_object_set_name (object, xmlNodeGetContent (field));
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break;
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}
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field = field->next;
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}
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}
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void
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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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if (plugin && !gst_plugin_is_loaded (plugin)) {
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GST_DEBUG (GST_CAT_PLUGIN_LOADING, "loading plugin %s for feature\n", plugin->name);
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gst_plugin_load_plugin (plugin);
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}
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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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