/* 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 <stdlib.h>
#include <glib/gi18n-lib.h>
#ifdef GEGL_CHANT_PROPERTIES
gegl_chant_file_path (path, _("File"), "/tmp/gegl-logo.svg", _("Path of file to load."))
#else
#define GEGL_CHANT_TYPE_SOURCE
#define GEGL_CHANT_C_FILE "magick-load.c"
#include "gegl-chant.h"
#include <stdio.h>
static void
load_cache (GeglChantO *op_magick_load)
{
if (!op_magick_load->chant_data)
{
gchar *filename;
gchar *cmd;
GeglNode *graph, *sink;
GeglBuffer *newbuf = NULL;
/* ImageMagick backed fallback FIXME: make this robust.
* maybe use pipes in a manner similar to the raw loader,
* or at least use a properly unique filename */
filename = g_build_filename (g_get_tmp_dir (), "gegl-magick.png", NULL);
cmd = g_strdup_printf ("convert \"%s\"'[0]' \"%s\"",
op_magick_load->path, filename);
if (system (cmd) == -1)
g_warning ("Error executing ImageMagick convert program");
graph = gegl_graph (sink=gegl_node ("gegl:buffer-sink", "buffer", &newbuf, NULL,
gegl_node ("gegl:png-load", "path", filename, NULL)));
gegl_node_process (sink);
op_magick_load->chant_data = (gpointer) newbuf;
g_object_unref (graph);
g_free (cmd);
g_free (filename);
}
}
static GeglRectangle
get_bounding_box (GeglOperation *operation)
{
GeglRectangle result = {0,0,0,0};
GeglChantO *o = GEGL_CHANT_PROPERTIES (operation);
gint width, height;
load_cache (o);
g_object_get (o->chant_data, "width", &width,
"height", &height, NULL);
result.width = width;
result.height = height;
return result;
}
static GeglRectangle
get_cached_region (GeglOperation *operation,
const GeglRectangle *roi)
{
return get_bounding_box (operation);
}
static gboolean
process (GeglOperation *operation,
GeglOperationContext *context,
const gchar *output_pad,
const GeglRectangle *result,
gint level)
{
GeglChantO *o = GEGL_CHANT_PROPERTIES (operation);
if (!o->chant_data)
return FALSE;
/* overriding the predefined behavior */
g_object_ref (o->chant_data);
gegl_operation_context_take_object (context, "output", G_OBJECT (o->chant_data));
return TRUE;
}
static void finalize (GObject *object)
{
GeglOperation *op = (void*) object;
GeglChantO *o = GEGL_CHANT_PROPERTIES (op);
if (o->chant_data)
g_object_unref (o->chant_data);
o->chant_data = NULL;
G_OBJECT_CLASS (gegl_chant_parent_class)->finalize (object);
}
static void
gegl_chant_class_init (GeglChantClass *klass)
{
GeglOperationClass *operation_class;
GObjectClass *object_class;
operation_class = GEGL_OPERATION_CLASS (klass);
object_class = G_OBJECT_CLASS (klass);
object_class->finalize = finalize;
operation_class->process = process;
operation_class->get_bounding_box = get_bounding_box;
operation_class->get_cached_region = get_cached_region;;
operation_class->no_cache = FALSE;
gegl_operation_class_set_keys (operation_class,
"name" , "gegl:magick-load",
"categories" , "hidden",
"description",
_("Image Magick wrapper using the png op."),
NULL);
}
#endif