/* GStreamer tag muxer base class
 *
 * Copyright (C) 2006 Christophe Fergeau  <teuf@gnome.org>
 * Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
 * Copyright (C) 2009 Pioneers of the Inevitable <songbird@songbirdnest.com>
 *
 * 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_TAG_MUX_H
#define GST_TAG_MUX_H

#include <gst/gst.h>

G_BEGIN_DECLS

typedef struct _GstTagMux GstTagMux;
typedef struct _GstTagMuxClass GstTagMuxClass;

/* Definition of structure storing data for this element. */
struct _GstTagMux {
  GstElement    element;

  GstPad       *srcpad;
  GstPad       *sinkpad;
  GstTagList   *event_tags; /* tags received from upstream elements */
  GstTagList   *final_tags; /* Final set of tags used for muxing */
  gsize         start_tag_size;
  gsize         end_tag_size;
  gboolean      render_start_tag;
  gboolean      render_end_tag;

  gint64        current_offset;
  gint64        max_offset;

  GstEvent     *newsegment_ev; /* cached newsegment event from upstream */
};

/* Standard definition defining a class for this element. */
struct _GstTagMuxClass {
  GstElementClass parent_class;

  /* vfuncs */
  GstBuffer  * (*render_start_tag) (GstTagMux * mux, GstTagList * tag_list);
  GstBuffer  * (*render_end_tag) (GstTagMux * mux, GstTagList * tag_list);
};

/* Standard macros for defining types for this element.  */
#define GST_TYPE_TAG_MUX \
  (gst_tag_mux_get_type())
#define GST_TAG_MUX(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TAG_MUX,GstTagMux))
#define GST_TAG_MUX_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_TAG_MUX,GstTagMuxClass))
#define GST_IS_TAG_MUX(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TAG_MUX))
#define GST_IS_TAG_MUX_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TAG_MUX))

/* Standard function returning type information. */
GType gst_tag_mux_get_type (void);

G_END_DECLS

#endif