gstreamer/libs/gst/control/dparam_smooth.h

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/* GStreamer
* Copyright (C) 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
*
* gstdparam_smooth.h: Realtime smoothed dynamic parameter
*
* 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_DPSMOOTH_H__
#define __GST_DPSMOOTH_H__
#include "dparam.h"
G_BEGIN_DECLS
#define GST_TYPE_DPSMOOTH (gst_dpsmooth_get_type ())
#define GST_DPSMOOTH(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_DPSMOOTH,GstDParamSmooth))
#define GST_DPSMOOTH_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_DPSMOOTH,GstDParamSmooth))
#define GST_IS_DPSMOOTH(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_DPSMOOTH))
#define GST_IS_DPSMOOTH_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_DPSMOOTH))
typedef struct _GstDParamSmoothClass GstDParamSmoothClass;
typedef struct _GstDParamSmooth GstDParamSmooth;
struct _GstDParamSmooth {
GstDParam dparam;
gint64 start_interp;
gint64 end_interp;
gint64 duration_interp;
gfloat start_float;
gfloat diff_float;
gfloat current_float;
gint64 update_period;
gint64 slope_time;
gfloat slope_delta_float;
gboolean need_interp_times;
};
struct _GstDParamSmoothClass {
GstDParamClass parent_class;
/* signal callbacks */
};
GstDParam* gst_dpsmooth_new (GType type);
G_END_DECLS
#endif /* __GST_DPSMOOTH_H__ */