#ifndef __GST_LAL_MEAN_H__
#define __GST_LAL_MEAN_H__


#include <glib.h>
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
#include <gst/base/gstbasetransform.h>


G_BEGIN_DECLS


#define GSTLAL_MEAN_TYPE \
	(gstlal_mean_get_type())
#define GSTLAL_MEAN(obj) \
	(G_TYPE_CHECK_INSTANCE_CAST((obj), GSTLAL_MEAN_TYPE, GSTLALMean))
#define GSTLAL_MEAN_CLASS(klass) \
	(G_TYPE_CHECK_CLASS_CAST((klass), GSTLAL_MEAN_TYPE, GSTLALMeanClass))
#define GST_IS_GSTLAL_MEAN(obj) \
	(G_TYPE_CHECK_INSTANCE_TYPE((obj), GSTLAL_MEAN_TYPE))
#define GST_IS_GSTLAL_MEAN_CLASS(klass) \
	(G_TYPE_CHECK_CLASS_TYPE((klass), GSTLAL_MEAN_TYPE))


typedef struct {
	GstBaseTransformClass parent_class;

	void (*rate_changed)(GstElement *, gint, void *);
} GSTLALMeanClass;


typedef struct {
	GstBaseTransform element;

	/*
	 * input stream
	 */

	gint rate;
	GstAdapter *adapter;

	/*
	 * averaging parameters
	 */

	guint32 n;

	/*
	 * timestamp book-keeping
	 */

	GstClockTime t0;
	guint64 offset0;
	guint64 next_out_offset;
	gboolean need_discont;
} GSTLALMean;


GType gstlal_mean_get_type(void);


G_END_DECLS


#endif	/* __GST_LAL_MEAN_H__ */