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a21e2a2187
Original commit message from CVS: the big autoplag coverup plus some further cleaning. Can someone tell me if this change violates some sort of API stability, or was this meant to be an internal function anyway (and thus should it be somehow removed from the .h) ?
65 lines
3 KiB
C
65 lines
3 KiB
C
/* GStreamer
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* Copyright (C) 1999-2002 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000-2002 Wim Taymans <wtay@chello.be>
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*
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* gstsearchfuncs.h: Header for gstsearchfuncs.c
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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_SEARCHFUNCS_H__
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#define __GST_SEARCHFUNCS_H__
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#include <gst/gst.h>
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/* placeholder for maximum cost when plugging */
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#define GST_AUTOPLUG_MAX_COST 999999
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/* struct for a node, in the search tree */
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typedef struct _GstAutoplugNode GstAutoplugNode;
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struct _GstAutoplugNode {
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GstAutoplugNode *prev; /* previous node */
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GstElementFactory *fac; /* factory of element to connect to */
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GstPadTemplate *templ; /* template which can connect */
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guint cost; /* total cost to get here */
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GstPadTemplate *endpoint; /* pad template that can connect to sink caps */
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};
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/* helper functions */
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gboolean gst_autoplug_caps_intersect (GstCaps *src, GstCaps *sink);
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GstPadTemplate * gst_autoplug_can_connect_src (GstElementFactory *fac, GstCaps *src);
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GstPadTemplate * gst_autoplug_can_connect_sink (GstElementFactory *fac, GstCaps *sink);
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GstPadTemplate * gst_autoplug_can_match (GstElementFactory *src, GstElementFactory *dest);
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gboolean gst_autoplug_factory_has_direction (GstElementFactory *fac, GstPadDirection dir);
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#define gst_autoplug_factory_has_sink(fac) gst_autoplug_factory_has_direction((fac), GST_PAD_SINK)
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#define gst_autoplug_factory_has_src(fac) gst_autoplug_factory_has_direction((fac), GST_PAD_SRC)
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/* cost functions */
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#define gst_autoplug_get_cost(fac) 1
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/* factory selections */
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GList * gst_autoplug_factories_sinks (GList *factories);
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GList * gst_autoplug_factories_srcs (GList *factories);
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GList * gst_autoplug_factories_filters (GList *factories);
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GList * gst_autoplug_factories_filters_with_sink_caps(GList *factories);
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GList * gst_autoplug_factories_at_most_templates(GList *factories, GstPadDirection dir, guint maxtemplates);
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/* shortest path algorithm */
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GList * gst_autoplug_sp (GstCaps *src_caps, GstCaps *sink_caps, GList *factories);
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#endif /* __GST_SEARCHFUNCS_H__ */
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