| /* GStreamer |
| * Copyright (C) 1999-2002 Erik Walthinsen <omega@cse.ogi.edu> |
| * 2000-2002 Wim Taymans <wtay@chello.be> |
| * |
| * gstsearchfuncs.h: Header for gstsearchfuncs.c |
| * |
| * 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_SEARCHFUNCS_H__ |
| #define __GST_SEARCHFUNCS_H__ |
| |
| #include <gst/gst.h> |
| |
| /* placeholder for maximum cost when plugging */ |
| #define GST_AUTOPLUG_MAX_COST 999999 |
| |
| /* struct for a node, in the search tree */ |
| typedef struct _GstAutoplugNode GstAutoplugNode; |
| |
| struct _GstAutoplugNode { |
| GstAutoplugNode *prev; /* previous node */ |
| GstElementFactory *fac; /* factory of element to connect to */ |
| GstPadTemplate *templ; /* template which can connect */ |
| guint cost; /* total cost to get here */ |
| GstPadTemplate *endpoint; /* pad template that can connect to sink caps */ |
| }; |
| |
| /* helper functions */ |
| gboolean gst_autoplug_caps_intersect (GstCaps *src, GstCaps *sink); |
| GstPadTemplate * gst_autoplug_can_connect_src (GstElementFactory *fac, GstCaps *src); |
| GstPadTemplate * gst_autoplug_can_connect_sink (GstElementFactory *fac, GstCaps *sink); |
| GstPadTemplate * gst_autoplug_can_match (GstElementFactory *src, GstElementFactory *dest); |
| gboolean gst_autoplug_factory_has_direction (GstElementFactory *fac, GstPadDirection dir); |
| #define gst_autoplug_factory_has_sink(fac) gst_autoplug_factory_has_direction((fac), GST_PAD_SINK) |
| #define gst_autoplug_factory_has_src(fac) gst_autoplug_factory_has_direction((fac), GST_PAD_SRC) |
| |
| /* cost functions */ |
| #define gst_autoplug_get_cost(fac) 1 |
| |
| /* factory selections */ |
| GList * gst_autoplug_factories_sinks (GList *factories); |
| GList * gst_autoplug_factories_srcs (GList *factories); |
| GList * gst_autoplug_factories_filters (GList *factories); |
| GList * gst_autoplug_factories_filters_with_sink_caps(GList *factories); |
| GList * gst_autoplug_factories_at_most_templates(GList *factories, GstPadDirection dir, guint maxtemplates); |
| |
| /* shortest path algorithm */ |
| GList * gst_autoplug_sp (GstCaps *src_caps, GstCaps *sink_caps, GList *factories); |
| |
| #endif /* __GST_SEARCHFUNCS_H__ */ |
