gst/gstghostpad.h

/* GStreamer
 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
 *                    2000 Wim Taymans <wim.taymans@chello.be>
 *                    2005 Andy Wingo <wingo@pobox.com>
 *
 * gstghostpad.h: Proxy pads
 *
 * 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_GHOST_PAD_H__
#define __GST_GHOST_PAD_H__


#include <gst/gstpad.h>


G_BEGIN_DECLS

#define GST_TYPE_PROXY_PAD              (gst_proxy_pad_get_type ())
#define GST_IS_PROXY_PAD(obj)           (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_PROXY_PAD))
#define GST_IS_PROXY_PAD_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_PROXY_PAD))
#define GST_PROXY_PAD(obj)              (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_PROXY_PAD, GstProxyPad))
#define GST_PROXY_PAD_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_PROXY_PAD, GstProxyPadClass))

typedef struct _GstProxyPad GstProxyPad;
typedef struct _GstProxyPadPrivate GstProxyPadPrivate;
typedef struct _GstProxyPadClass GstProxyPadClass;

struct _GstProxyPad
{
  GstPad pad;

  /*< private >*/
  GstProxyPadPrivate *priv;
};

struct _GstProxyPadClass
{
  GstPadClass parent_class;

  /*< private >*/
  gpointer _gst_reserved[1];
};

GType gst_proxy_pad_get_type (void);

GstProxyPad*     gst_proxy_pad_get_internal     (GstProxyPad *pad);


const GstQueryType* gst_proxy_pad_query_type_default             (GstPad *pad);
gboolean            gst_proxy_pad_event_default                  (GstPad *pad, GstEvent *event);
gboolean            gst_proxy_pad_query_default                  (GstPad *pad, GstQuery *query);
GstIterator*        gst_proxy_pad_iterate_internal_links_default (GstPad *pad);
GstFlowReturn       gst_proxy_pad_chain_default                  (GstPad *pad, GstBuffer *buffer);
GstFlowReturn       gst_proxy_pad_chain_list_default             (GstPad *pad, GstBufferList *list);
GstFlowReturn       gst_proxy_pad_getrange_default               (GstPad *pad, guint64 offset, guint size, GstBuffer **buffer);
GstCaps*            gst_proxy_pad_getcaps_default                (GstPad *pad, GstCaps * filter);
gboolean            gst_proxy_pad_acceptcaps_default             (GstPad *pad, GstCaps *caps);
void                gst_proxy_pad_fixatecaps_default             (GstPad *pad, GstCaps *caps);
void                gst_proxy_pad_unlink_default                 (GstPad * pad);

#define GST_TYPE_GHOST_PAD		(gst_ghost_pad_get_type ())
#define GST_IS_GHOST_PAD(obj)		(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GHOST_PAD))
#define GST_IS_GHOST_PAD_CLASS(klass)	(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GHOST_PAD))
#define GST_GHOST_PAD(obj)		(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GHOST_PAD, GstGhostPad))
#define GST_GHOST_PAD_CLASS(klass)	(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GHOST_PAD, GstGhostPadClass))
#define GST_GHOST_PAD_CAST(obj)		((GstGhostPad*)(obj))

/**
 * GstGhostPad:
 *
 * Opaque #GstGhostPad structure.
 */
typedef struct _GstGhostPad GstGhostPad;
typedef struct _GstGhostPadPrivate GstGhostPadPrivate;
typedef struct _GstGhostPadClass GstGhostPadClass;

struct _GstGhostPad
{
  GstProxyPad pad;

  /*< private >*/
  GstGhostPadPrivate *priv;
};

struct _GstGhostPadClass
{
  GstProxyPadClass parent_class;

  /*< private >*/
  gpointer _gst_reserved[GST_PADDING];
};


GType		 gst_ghost_pad_get_type 	(void);

GstPad*		 gst_ghost_pad_new		(const gchar *name, GstPad *target);
GstPad*		 gst_ghost_pad_new_no_target	(const gchar *name, GstPadDirection dir);

GstPad*		 gst_ghost_pad_new_from_template (const gchar *name, GstPad * target, GstPadTemplate * templ);
GstPad*		 gst_ghost_pad_new_no_target_from_template (const gchar *name, GstPadTemplate * templ);

GstPad*		 gst_ghost_pad_get_target	(GstGhostPad *gpad);
gboolean	 gst_ghost_pad_set_target	(GstGhostPad *gpad, GstPad *newtarget);

gboolean	 gst_ghost_pad_construct	(GstGhostPad *gpad);

void             gst_ghost_pad_unlink_default         (GstPad * pad);
GstPadLinkReturn gst_ghost_pad_link_default           (GstPad * pad, GstPad * peer);
gboolean         gst_ghost_pad_activate_pull_default  (GstPad * pad, gboolean active);
gboolean         gst_ghost_pad_activate_push_default  (GstPad * pad, gboolean active);

gboolean         gst_ghost_pad_internal_activate_push_default (GstPad * pad, gboolean active);
gboolean         gst_ghost_pad_internal_activate_pull_default (GstPad * pad, gboolean active);

G_END_DECLS

#endif /* __GST_GHOST_PAD_H__ */