/* GStreamer * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> * 2000 Wim Taymans <wtay@chello.be> * * gsttype.h: Header for type management * * 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_TYPE_H__ #define __GST_TYPE_H__ #include <gst/gstbuffer.h> #include <gst/gstcaps.h> #include <gst/gstpluginfeature.h> /* type of function used to check a stream for equality with type */ typedef GstCaps *(*GstTypeFindFunc) (GstBuffer *buf, gpointer priv); typedef struct _GstType GstType; typedef struct _GstTypeDefinition GstTypeDefinition; typedef struct _GstTypeFactory GstTypeFactory; typedef struct _GstTypeFactoryClass GstTypeFactoryClass; struct _GstType { guint16 id; /* type id (assigned) */ gchar *mime; /* MIME type */ gchar *exts; /* space-delimited list of extensions */ GSList *factories; /* factories providing this type */ }; struct _GstTypeDefinition { gchar *name; gchar *mime; gchar *exts; GstTypeFindFunc typefindfunc; }; #define GST_TYPE_TYPEFACTORY \ (gst_typefactory_get_type()) #define GST_TYPEFACTORY(obj) \ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TYPEFACTORY,GstTypeFactory)) #define GST_TYPEFACTORY_CLASS(klass) \ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_TYPEFACTORY,GstTypeFactoryClass)) #define GST_IS_TYPEFACTORY(obj) \ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TYPEFACTORY)) #define GST_IS_TYPEFACTORY_CLASS(klass) \ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TYPEFACTORY)) struct _GstTypeFactory { GstPluginFeature feature; gchar *mime; gchar *exts; GstTypeFindFunc typefindfunc; }; struct _GstTypeFactoryClass { GstPluginFeatureClass parent; }; GType gst_typefactory_get_type (void); GstTypeFactory* gst_typefactory_new (GstTypeDefinition *definition); GstTypeFactory* gst_typefactory_find (const gchar *name); GList* gst_typefactory_get_list (void); /* create a new type, or find/merge an existing one */ guint16 gst_type_register (GstTypeFactory *factory); /* look up a type by mime or extension */ guint16 gst_type_find_by_mime (const gchar *mime); guint16 gst_type_find_by_ext (const gchar *ext); /* get GstType by id */ GstType* gst_type_find_by_id (guint16 id); /* get the list of registered types (returns list of GstType!) */ GList* gst_type_get_list (void); #endif /* __GST_TYPE_H__ */