/* GStreamer
 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
 *                    2000 Wim Taymans <wtay@chello.be>
 *
 * gstpluginfeature.h: Header for base GstXMLRegistry
 *
 * 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_XML_REGISTRY_H__
#define __GST_XML_REGISTRY_H__

#include <gst/gstregistry.h>
#include <stdio.h>

G_BEGIN_DECLS

#define GST_TYPE_XML_REGISTRY \
  (gst_xml_registry_get_type())
#define GST_XML_REGISTRY(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_XML_REGISTRY,GstXMLRegistry))
#define GST_XML_REGISTRY_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_XML_REGISTRY,GstXMLRegistryClass))
#define GST_IS_XML_REGISTRY(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_XML_REGISTRY))
#define GST_IS_XML_REGISTRY_CLASS(obj) \
  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_XML_REGISTRY))

typedef struct _GstXMLRegistry GstXMLRegistry;
typedef struct _GstXMLRegistryClass GstXMLRegistryClass;

typedef enum {
  GST_XML_REGISTRY_NONE,
  GST_XML_REGISTRY_TOP,
  GST_XML_REGISTRY_PATHS,
  GST_XML_REGISTRY_PATH,
  GST_XML_REGISTRY_PATHS_DONE,
  GST_XML_REGISTRY_PLUGIN,
  GST_XML_REGISTRY_FEATURE,
  GST_XML_REGISTRY_PADTEMPLATE,
  GST_XML_REGISTRY_CAPS,
  GST_XML_REGISTRY_STRUCTURE,
  GST_XML_REGISTRY_PROPERTIES
} GstXMLRegistryState;

typedef enum {
  GST_XML_REGISTRY_READ,
  GST_XML_REGISTRY_WRITE
} GstXMLRegistryMode;

typedef void	 (*GstXMLRegistryGetPerms)	(GstXMLRegistry      *registry);
typedef void	 (*GstXMLRegistryAddPathList)	(GstXMLRegistry      *registry);
typedef gboolean (*GstXMLRegistryParser) 	(GMarkupParseContext *context,
                                                 const gchar	      *tag,
                                                 const gchar         *text,
                                                 gsize                text_len,
                                                 GstXMLRegistry      *registry,
                                                 GError             **error);

typedef gboolean (*GstXMLRegistryOpen)   	(GstXMLRegistry      *registry,
                                                 GstXMLRegistryMode   mode);
typedef gboolean (*GstXMLRegistryLoad)		(GstXMLRegistry      *registry,
                                                 gchar		      *dest,
                                                 gssize              *size);
typedef gboolean (*GstXMLRegistrySave)   	(GstXMLRegistry      *registry,
                                                 gchar		      *format, 
                                                 ...);
typedef gboolean (*GstXMLRegistryClose)		(GstXMLRegistry      *registry);

struct _GstXMLRegistry {
  GstRegistry 		 object;

  gchar 		*location;
  gboolean		 open;

  FILE 			*regfile;
  gchar			*buffer;

  GMarkupParseContext 	*context;
  GList			*open_tags;
  GstXMLRegistryState 	 state;
  GstXMLRegistryParser	 parser;

  GstPlugin		*current_plugin;
  GstPluginFeature	*current_feature;

  gchar			*name_template;
  GstPadDirection	 direction;
  GstPadPresence	 presence;
  GstCaps		*caps;

  gchar			*caps_name;
  gchar			*structure_name;

  gboolean		 in_list;
  GList			*entry_list;
  gchar			*list_name;
};

struct _GstXMLRegistryClass {
  GstRegistryClass	 parent_class;

  GstXMLRegistryGetPerms get_perms_func;
  GstXMLRegistryAddPathList add_path_list_func;
  GstXMLRegistryOpen	 open_func;
  GstXMLRegistryLoad	 load_func;
  GstXMLRegistrySave	 save_func;
  GstXMLRegistryClose	 close_func;
};


/* normal GObject stuff */
GType		gst_xml_registry_get_type		(void);

GstRegistry* 	gst_xml_registry_new 			(const gchar *name, const gchar *location);

G_END_DECLS

#endif /* __GST_XML_REGISTRY_H__ */