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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstplugin.h: Header for plugin subsystem
*
* 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.
*/
#ifndef __GST_PLUGIN_H__
#define __GST_PLUGIN_H__
#include <gst/gstconfig.h>
#include <gmodule.h>
#include <gst/gstpluginfeature.h>
#include <gst/gstmacros.h>
#include <gst/gstobject.h>
G_BEGIN_DECLS
typedef struct _GstPlugin GstPlugin;
typedef struct _GstPluginClass GstPluginClass;
typedef struct _GstPluginDesc GstPluginDesc;
GQuark gst_plugin_error_quark (void);
#define GST_PLUGIN_ERROR gst_plugin_error_quark ()
typedef enum
{
GST_PLUGIN_ERROR_MODULE,
GST_PLUGIN_ERROR_DEPENDENCIES,
GST_PLUGIN_ERROR_NAME_MISMATCH
} GstPluginError;
typedef enum
{
GST_PLUGIN_FLAG_CACHED = (1<<0),
} GstPluginFlags;
/* Initialiser function: returns TRUE if plugin initialised successfully */
typedef gboolean (*GstPluginInitFunc) (GstPlugin *plugin);
struct _GstPluginDesc {
gint major_version; /* major version of core that plugin was compiled for */
gint minor_version; /* minor version of core that plugin was compiled for */
gchar *name; /* unique name of plugin */
gchar *description; /* description of plugin */
GstPluginInitFunc plugin_init; /* pointer to plugin_init function */
gchar *version; /* version of the plugin */
gchar *license; /* effective license of plugin */
gchar *source; /* source module plugin belongs to */
gchar *package; /* shipped package plugin belongs to */
gchar *origin; /* URL to provider of plugin */
gpointer _gst_reserved[GST_PADDING];
};
#define GST_TYPE_PLUGIN (gst_plugin_get_type())
#define GST_IS_PLUGIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_PLUGIN))
#define GST_IS_PLUGIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_PLUGIN))
#define GST_PLUGIN_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_PLUGIN, GstPluginClass))
#define GST_PLUGIN(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_PLUGIN, GstPlugin))
#define GST_PLUGIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_PLUGIN, GstPluginClass))
struct _GstPlugin {
GstObject object;
GstPluginDesc desc;
GstPluginDesc *orig_desc;
unsigned int flags;
gchar * filename;
GList * features; /* list of features provided */
gint numfeatures;
GModule * module; /* contains the module if plugin is loaded */
size_t file_size;
time_t file_mtime;
gpointer _gst_reserved[GST_PADDING];
};
struct _GstPluginClass {
GstObjectClass object_class;
};
#define GST_PLUGIN_DEFINE(major,minor,name,description,init,version,license,package,origin) \
GST_PLUGIN_EXPORT GstPluginDesc gst_plugin_desc = { \
major, \
minor, \
name, \
description, \
init, \
version, \
license, \
PACKAGE, \
package, \
origin, \
GST_PADDING_INIT \
};
#define GST_PLUGIN_DEFINE_STATIC(major,minor,name,description,init,version,license,package,origin) \
static void GST_GNUC_CONSTRUCTOR \
_gst_plugin_static_init__ ##init (void) \
{ \
static GstPluginDesc plugin_desc_ = { \
major, \
minor, \
name, \
description, \
init, \
version, \
license, \
PACKAGE, \
package, \
origin, \
GST_PADDING_INIT \
}; \
_gst_plugin_register_static (&plugin_desc_); \
}
#define GST_LICENSE_UNKNOWN "unknown"
/* function for filters */
typedef gboolean (*GstPluginFilter) (GstPlugin *plugin,
gpointer user_data);
GType gst_plugin_get_type (void);
GstPlugin * gst_plugin_new (void);
void gst_plugin_free (GstPlugin *plugin);
void _gst_plugin_initialize (void);
void _gst_plugin_register_static (GstPluginDesc *desc);
G_CONST_RETURN gchar* gst_plugin_get_name (GstPlugin *plugin);
G_CONST_RETURN gchar* gst_plugin_get_description (GstPlugin *plugin);
G_CONST_RETURN gchar* gst_plugin_get_filename (GstPlugin *plugin);
G_CONST_RETURN gchar* gst_plugin_get_version (GstPlugin *plugin);
G_CONST_RETURN gchar* gst_plugin_get_license (GstPlugin *plugin);
G_CONST_RETURN gchar* gst_plugin_get_source (GstPlugin *plugin);
G_CONST_RETURN gchar* gst_plugin_get_package (GstPlugin *plugin);
G_CONST_RETURN gchar* gst_plugin_get_origin (GstPlugin *plugin);
GModule * gst_plugin_get_module (GstPlugin *plugin);
gboolean gst_plugin_is_loaded (GstPlugin *plugin);
GList* gst_plugin_feature_filter (GstPlugin *plugin,
GstPluginFeatureFilter filter,
gboolean first,
gpointer user_data);
GList* gst_plugin_list_feature_filter (GList *list,
GstPluginFeatureFilter filter,
gboolean first,
gpointer user_data);
gboolean gst_plugin_name_filter (GstPlugin *plugin, const gchar *name);
GList* gst_plugin_get_feature_list (GstPlugin *plugin);
GstPluginFeature* gst_plugin_find_feature (GstPlugin *plugin, const gchar *name, GType type);
GstPluginFeature* gst_plugin_find_feature_by_name (GstPlugin *plugin, const gchar *name);
gboolean gst_plugin_check_file (const gchar *filename, GError** error);
GstPlugin * gst_plugin_load_file (const gchar *filename, GError** error);
void gst_plugin_add_feature (GstPlugin *plugin, GstPluginFeature *feature);
GstPlugin * gst_plugin_load (GstPlugin *plugin);
/* shortcuts to load from the registry pool */
gboolean gst_plugin_load_1 (const gchar *name);
G_END_DECLS
#endif /* __GST_PLUGIN_H__ */
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