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/* This file is an image processing operation for GEGL
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*
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* GEGL is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* GEGL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with GEGL; if not, see <http://www.gnu.org/licenses/>.
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*
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* Copyright 2006 Øyvind Kolås <pippin@gimp.org>
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*/
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#include "config.h"
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#include <glib/gi18n-lib.h>
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#ifdef GEGL_CHANT_PROPERTIES
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/* no properties */
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#else
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#define GEGL_CHANT_TYPE_FILTER
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#define GEGL_CHANT_C_FILE "nop.c"
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#include "gegl-chant.h"
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static gboolean
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gegl_nop_process (GeglOperation *operation,
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GeglOperationContext *context,
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const gchar *output_prop,
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const GeglRectangle *result,
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gint level)
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{
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GeglBuffer *input;
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if (strcmp (output_prop, "output"))
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{
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g_warning ("requested processing of %s pad on a nop", output_prop);
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return FALSE;
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}
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input = GEGL_BUFFER (gegl_operation_context_get_object (context, "input"));
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if (!input)
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{
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g_warning ("nop received NULL input");
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return FALSE;
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}
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gegl_operation_context_take_object (context, "output", g_object_ref (G_OBJECT (input)));
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return TRUE;
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}
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static void
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gegl_chant_class_init (GeglChantClass *klass)
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{
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GeglOperationClass *operation_class;
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operation_class = GEGL_OPERATION_CLASS (klass);
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operation_class->process = gegl_nop_process;
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gegl_operation_class_set_keys (operation_class,
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"name", "gegl:nop",
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"categories", "core",
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"description", _("No operation (can be used as a routing point)"),
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NULL);
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}
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#endif
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