/* This file is an image processing operation for 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 <pippin@gimp.org>
*/
#include "config.h"
#include <glib/gi18n-lib.h>
#ifdef GEGL_CHANT_PROPERTIES
/* no properties */
#else
#define GEGL_CHANT_TYPE_FILTER
#define GEGL_CHANT_C_FILE "nop.c"
#include "gegl-chant.h"
static gboolean
gegl_nop_process (GeglOperation *operation,
GeglOperationContext *context,
const gchar *output_prop,
const GeglRectangle *result,
gint level)
{
GeglBuffer *input;
if (strcmp (output_prop, "output"))
{
g_warning ("requested processing of %s pad on a nop", output_prop);
return FALSE;
}
input = GEGL_BUFFER (gegl_operation_context_get_object (context, "input"));
if (!input)
{
g_warning ("nop received NULL input");
return FALSE;
}
gegl_operation_context_take_object (context, "output", g_object_ref (G_OBJECT (input)));
return TRUE;
}
static void
gegl_chant_class_init (GeglChantClass *klass)
{
GeglOperationClass *operation_class;
operation_class = GEGL_OPERATION_CLASS (klass);
operation_class->process = gegl_nop_process;
gegl_operation_class_set_keys (operation_class,
"name", "gegl:nop",
"categories", "core",
"description", _("No operation (can be used as a routing point)"),
NULL);
}
#endif