/* This file is part of GEGL

 *

 * GEGL is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 3 of the License, or (at your option) any later version.

 *

 * GEGL 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with GEGL; if not, see <http://www.gnu.org/licenses/>.

 *

 * Copyright 2007 Øyvind Kolås

 */

/* GeglOperationAreaFilter

 * The AreaFilter base class allows defining operations where the output data depends on a neighbourhood

 * with an input window that extends beyond the output window, the information about needed extra pixels

 * in different directions should be set up in the prepare callback for the operation.

*/

#ifndef __GEGL_OPERATION_AREA_FILTER_H__

#define __GEGL_OPERATION_AREA_FILTER_H__

#include "gegl-operation-filter.h"

G_BEGIN_DECLS

#define GEGL_TYPE_OPERATION_AREA_FILTER            (gegl_operation_area_filter_get_type ())

#define GEGL_OPERATION_AREA_FILTER(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_OPERATION_AREA_FILTER, GeglOperationAreaFilter))

#define GEGL_OPERATION_AREA_FILTER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GEGL_TYPE_OPERATION_AREA_FILTER, GeglOperationAreaFilterClass))

#define GEGL_IS_OPERATION_AREA_FILTER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_OPERATION_AREA_FILTER))

#define GEGL_IS_OPERATION_AREA_FILTER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GEGL_TYPE_OPERATION_AREA_FILTER))

#define GEGL_OPERATION_AREA_FILTER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GEGL_TYPE_OPERATION_AREA_FILTER, GeglOperationAreaFilterClass))

typedef struct _GeglOperationAreaFilter  GeglOperationAreaFilter;

struct _GeglOperationAreaFilter

{

  GeglOperationFilter parent_instance;

  gint                left;   /* extra pixels needed in each direction */

  gint                right;

  gint                top;

  gint                bottom;

};

typedef struct _GeglOperationAreaFilterClass GeglOperationAreaFilterClass;

struct _GeglOperationAreaFilterClass

{

  GeglOperationFilterClass parent_class;

  gpointer                 pad[4];

};

GType gegl_operation_area_filter_get_type (void) G_GNUC_CONST;

G_END_DECLS

#endif