Commit e6792774 authored by Michael Muré's avatar Michael Muré Committed by Øyvind "pippin" Kolås

add a buffer-cache op in the workshop

parent 46c306a5
/* 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 2010 Michael Muré <batolettre@gmail.com>
*/
#include "config.h"
#include <glib/gi18n-lib.h>
#ifdef GEGL_CHANT_PROPERTIES
gegl_chant_pointer (buffer, _("Cache buffer"),
_("The GeglBuffer where the caching is done"))
#else
#define GEGL_CHANT_TYPE_FILTER
#define GEGL_CHANT_C_FILE "buffer-cache.c"
#include "gegl-chant.h"
static GeglRectangle
get_bounding_box (GeglOperation *operation)
{
GeglRectangle result = {0,0,0,0};
GeglChantO *o = GEGL_CHANT_PROPERTIES (operation);
if (o->buffer)
{
result = *gegl_buffer_get_extent (GEGL_BUFFER (o->buffer));
}
else
{
result = GEGL_OPERATION_GET_CLASS (operation)->get_bounding_box (operation);
}
return result;
}
static gboolean
process (GeglOperation *operation,
GeglBuffer *input,
GeglBuffer *output,
const GeglRectangle *result)
{
GeglChantO *o = GEGL_CHANT_PROPERTIES (operation);
if (!o->buffer)
{
o->buffer = gegl_buffer_dup (input);
}
output = gegl_buffer_dup (o->buffer);
return TRUE;
}
static void
dispose (GObject *object)
{
GeglChantO *o = GEGL_CHANT_PROPERTIES (object);
if (o->buffer)
{
g_object_unref (o->buffer);
o->buffer = NULL;
}
G_OBJECT_CLASS (gegl_chant_parent_class)->dispose (object);
}
static void
gegl_chant_class_init (GeglChantClass *klass)
{
GeglOperationClass *operation_class;
GeglOperationFilterClass *filter_class;
operation_class = GEGL_OPERATION_CLASS (klass);
operation_class->get_bounding_box = get_bounding_box;
filter_class = GEGL_OPERATION_FILTER_CLASS (klass);
filter_class->process = process;
G_OBJECT_CLASS (klass)->dispose = dispose;
operation_class->name = "gegl:buffer-cache";
operation_class->categories = "core";
operation_class->description = _("Cache the input buffer internally, further process take this buffer as input.");
}
#endif
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