# ../gegl/operation/gegl-operation-point-filter.h

    /* 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 2006 Øyvind Kolås
     */

    /* GeglOperationPointFilter
     * The point-filter base class is for filters where an output pixel only depends on the color and alpha values
     * of the corresponding input pixel. This allows you to do the processing on linear buffers, in the future
     * versions of GEGL operations implemented using the point-filter will get speed increases due to more
     * intelligent processing possible in the point filter class
     */

    #ifndef __GEGL_OPERATION_POINT_FILTER_H__
    #define __GEGL_OPERATION_POINT_FILTER_H__

    #include "gegl-operation-filter.h"

    #include "opencl/gegl-cl.h"

    G_BEGIN_DECLS

    #define GEGL_TYPE_OPERATION_POINT_FILTER            (gegl_operation_point_filter_get_type ())
    #define GEGL_OPERATION_POINT_FILTER(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_OPERATION_POINT_FILTER, GeglOperationPointFilter))
    #define GEGL_OPERATION_POINT_FILTER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GEGL_TYPE_OPERATION_POINT_FILTER, GeglOperationPointFilterClass))
    #define GEGL_IS_OPERATION_POINT_FILTER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_OPERATION_POINT_FILTER))
    #define GEGL_IS_OPERATION_POINT_FILTER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GEGL_TYPE_OPERATION_POINT_FILTER))
    #define GEGL_OPERATION_POINT_FILTER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GEGL_TYPE_OPERATION_POINT_FILTER, GeglOperationPointFilterClass))

    typedef struct _GeglOperationPointFilter  GeglOperationPointFilter;
    struct _GeglOperationPointFilter
    {
      GeglOperationFilter parent_instance;
    };

    typedef struct _GeglOperationPointFilterClass GeglOperationPointFilterClass;
    struct _GeglOperationPointFilterClass
    {
      GeglOperationFilterClass parent_class;

      gboolean (* process) (GeglOperation      *self,    /* for parameters    */
                            void               *in_buf,  /* input buffer      */
                            void               *out_buf, /* output buffer     */
                            glong               samples, /* number of samples */
                            const GeglRectangle *roi,    /* rectangle out_buf spans
                                                            in in buffer, see the
                                                            checkerboard op for
                                                            semantics */
                            gint                 level);
      cl_int   (* cl_process) (GeglOperation       *self,
                               cl_mem               in_tex,
                               cl_mem               out_tex,
                               size_t               global_worksize,
                               const GeglRectangle *roi,
                               gint                 level);
      gpointer                 pad[4];
    };

    GType gegl_operation_point_filter_get_type (void) G_GNUC_CONST;

    G_END_DECLS

    #endif