/* GStreamer

 *

 * Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>

 *

 * gstinterpolationcontrolsource.h: Control source that provides several

 *                                  interpolation methods

 *

 * 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., 51 Franklin St, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 */

#ifndef __GST_INTERPOLATION_CONTROL_SOURCE_H__

#define __GST_INTERPOLATION_CONTROL_SOURCE_H__

#include <glib-object.h>

#include <gst/gst.h>

#include <gst/controller/gsttimedvaluecontrolsource.h>

#include <gst/controller/controller-enumtypes.h>

G_BEGIN_DECLS

#define GST_TYPE_INTERPOLATION_CONTROL_SOURCE \

  (gst_interpolation_control_source_get_type ())

#define GST_INTERPOLATION_CONTROL_SOURCE(obj) \

  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_INTERPOLATION_CONTROL_SOURCE, GstInterpolationControlSource))

#define GST_INTERPOLATION_CONTROL_SOURCE_CLASS(vtable) \

  (G_TYPE_CHECK_CLASS_CAST ((vtable), GST_TYPE_INTERPOLATION_CONTROL_SOURCE, GstInterpolationControlSourceClass))

#define GST_IS_INTERPOLATION_CONTROL_SOURCE(obj) \

  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_INTERPOLATION_CONTROL_SOURCE))

#define GST_IS_INTERPOLATION_CONTROL_SOURCE_CLASS(vtable) \

  (G_TYPE_CHECK_CLASS_TYPE ((vtable), GST_TYPE_INTERPOLATION_CONTROL_SOURCE))

#define GST_INTERPOLATION_CONTROL_SOURCE_GET_CLASS(inst) \

  (G_TYPE_INSTANCE_GET_CLASS ((inst), GST_TYPE_INTERPOLATION_CONTROL_SOURCE, GstInterpolationControlSourceClass))

typedef struct _GstInterpolationControlSource GstInterpolationControlSource;

typedef struct _GstInterpolationControlSourceClass GstInterpolationControlSourceClass;

typedef struct _GstInterpolationControlSourcePrivate GstInterpolationControlSourcePrivate;

/**

 * GstInterpolationMode:

 * @GST_INTERPOLATION_MODE_NONE: steps-like interpolation, default

 * @GST_INTERPOLATION_MODE_LINEAR: linear interpolation

 * @GST_INTERPOLATION_MODE_CUBIC: cubic interpolation (natural), may overshoot

 *   the min or max values set by the control point, but is more 'curvy'

 * @GST_INTERPOLATION_MODE_CUBIC_MONOTONIC: monotonic cubic interpolation, will not

 *   produce any values outside of the min-max range set by the control points

 *   (Since 1.8)

 *

 * The various interpolation modes available.

 */

typedef enum

{

  GST_INTERPOLATION_MODE_NONE,

  GST_INTERPOLATION_MODE_LINEAR,

  GST_INTERPOLATION_MODE_CUBIC,

  GST_INTERPOLATION_MODE_CUBIC_MONOTONIC,

} GstInterpolationMode;

/**

 * GstInterpolationControlSource:

 *

 * The instance structure of #GstControlSource.

 */

struct _GstInterpolationControlSource {

  GstTimedValueControlSource parent;

  /*< private >*/

  GstInterpolationControlSourcePrivate *priv;

  gpointer _gst_reserved[GST_PADDING];

};

struct _GstInterpolationControlSourceClass {

  GstTimedValueControlSourceClass parent_class;

  /*< private >*/

  gpointer _gst_reserved[GST_PADDING];

};

GST_CONTROLLER_API

GType gst_interpolation_control_source_get_type (void);

/* Functions */

GST_CONTROLLER_API

GstControlSource * gst_interpolation_control_source_new (void);

#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC

G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstInterpolationControlSource, gst_object_unref)

#endif

G_END_DECLS

#endif /* __GST_INTERPOLATION_CONTROL_SOURCE_H__ */