/* GStreamer
 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
 *                    2000 Wim Taymans <wtay@chello.be>
 *
 * gstadder.h: Header for GstAdder element
 *
 * 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_ADDER_H__
#define __GST_ADDER_H__

#include <gst/gst.h>


#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

extern GstElementDetails gst_adder_details;

#define GST_TYPE_ADDER \
  (gst_adder_get_type())
#define GST_ADDER(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ADDER,GstAdder))
#define GST_ADDER_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ADDER,GstAdderClass))
#define GST_IS_ADDER(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ADDER))
#define GST_IS_ADDER_CLASS(obj) \
  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ADDER))

typedef struct _GstAdder 		GstAdder;
typedef struct _GstAdderClass 	GstAdderClass;

typedef struct {
  GstPad *sinkpad;

  GstBuffer *input_buffer; 		/* input buffer */ 
  gint16 *p_input_data;		    /* pointer to current position in input buffer */
  guint16 bytes_waiting;	    /* how many bytes are still left in input buffer ? */
} adder_input_channel_t;

struct _GstAdder {
  GstElement element;

  GstPad *srcpad;

  /* keep track of the sinkpads */
  gint numsinkpads;
  GSList *input_channels;
};

struct _GstAdderClass {
  GstElementClass parent_class;
};

GType 	gst_adder_get_type	(void);

gboolean 	gst_adder_factory_init 	(GstElementFactory *factory);

#ifdef __cplusplus
}
#endif /* __cplusplus */


#endif /* __GST_ADDER_H__ */