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142 lines
4.6 KiB
C
142 lines
4.6 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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* gstplugin.h: Header for plugin subsystem
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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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#ifndef __GST_PLUGIN_H__
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#define __GST_PLUGIN_H__
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#include <gst/gstconfig.h>
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#include <gmodule.h>
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#include <gst/gstpluginfeature.h>
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#include <gst/gstmacros.h>
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G_BEGIN_DECLS
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GQuark gst_plugin_error_quark (void);
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#define GST_PLUGIN_ERROR gst_plugin_error_quark ()
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typedef enum
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{
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GST_PLUGIN_ERROR_MODULE,
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GST_PLUGIN_ERROR_DEPENDENCIES
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} GstPluginError;
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#define GST_PLUGIN(plugin) ((GstPlugin *) (plugin))
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typedef struct _GstPlugin GstPlugin;
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typedef struct _GstPluginDesc GstPluginDesc;
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struct _GstPlugin {
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gchar *name; /* name of the plugin */
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gchar *longname; /* long name of plugin */
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gchar *filename; /* filename it came from */
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GList *features; /* list of features provided */
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gint numfeatures;
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gpointer manager; /* managing registry */
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GModule *module; /* contains the module if the plugin is loaded */
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gboolean init_called; /* if the init function has been called */
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GST_STRUCT_PADDING
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};
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/* Initialiser function: returns TRUE if plugin initialised successfully */
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typedef gboolean (*GstPluginInitFunc) (GModule *module, GstPlugin *plugin);
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struct _GstPluginDesc {
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gint major_version; /* major version of core that plugin was compiled for */
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gint minor_version; /* minor version of core that plugin was compiled for */
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gchar *name; /* name of plugin */
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GstPluginInitFunc plugin_init; /* pointer to plugin_init function */
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};
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#ifndef GST_PLUGIN_STATIC
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#define GST_PLUGIN_DESC_DYNAMIC(major,minor,name,init) \
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GstPluginDesc plugin_desc = { \
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major, \
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minor, \
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name, \
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init \
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};
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#else
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#define GST_PLUGIN_DESC_DYNAMIC(major,minor,name,init)
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#endif
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#define GST_PLUGIN_DESC_STATIC(major,minor,name,init) \
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static void GST_GNUC_CONSTRUCTOR \
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_gst_plugin_static_init__ ##init (void) \
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{ \
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static GstPluginDesc plugin_desc_ = { \
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major, \
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minor, \
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name, \
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init \
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}; \
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_gst_plugin_register_static (&plugin_desc_); \
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}
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#define GST_PLUGIN_DESC(major,minor,name,init) \
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GST_PLUGIN_DESC_DYNAMIC (major,minor,name,init) \
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GST_PLUGIN_DESC_STATIC (major,minor,name,init)
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/* function for filters */
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typedef gboolean (*GstPluginFilter) (GstPlugin *plugin,
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gpointer user_data);
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void _gst_plugin_initialize (void);
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void _gst_plugin_register_static (GstPluginDesc *desc);
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GstPlugin* gst_plugin_new (const gchar *filename);
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const gchar* gst_plugin_get_name (GstPlugin *plugin);
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void gst_plugin_set_name (GstPlugin *plugin, const gchar *name);
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const gchar* gst_plugin_get_longname (GstPlugin *plugin);
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void gst_plugin_set_longname (GstPlugin *plugin, const gchar *longname);
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const gchar* gst_plugin_get_filename (GstPlugin *plugin);
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gboolean gst_plugin_is_loaded (GstPlugin *plugin);
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GList* gst_plugin_feature_filter (GstPlugin *plugin,
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GstPluginFeatureFilter filter,
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gboolean first,
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gpointer user_data);
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GList* gst_plugin_list_feature_filter (GList *list,
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GstPluginFeatureFilter filter,
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gboolean first,
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gpointer user_data);
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gboolean gst_plugin_name_filter (GstPlugin *plugin, const gchar *name);
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GList* gst_plugin_get_feature_list (GstPlugin *plugin);
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GstPluginFeature* gst_plugin_find_feature (GstPlugin *plugin, const gchar *name, GType type);
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gboolean gst_plugin_load_plugin (GstPlugin *plugin, GError** error);
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gboolean gst_plugin_unload_plugin (GstPlugin *plugin);
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void gst_plugin_add_feature (GstPlugin *plugin, GstPluginFeature *feature);
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/* shortcuts to load from the registry pool */
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gboolean gst_plugin_load (const gchar *name);
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gboolean gst_library_load (const gchar *name);
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G_END_DECLS
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#endif /* __GST_PLUGIN_H__ */
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