mirror of https://github.com/GNOME/gimp.git
151 lines
5.1 KiB
C
151 lines
5.1 KiB
C
/* GIMP - The GNU Image Manipulation Program
|
|
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <gio/gio.h>
|
|
#include <gegl.h>
|
|
#include <gdk-pixbuf/gdk-pixbuf.h>
|
|
|
|
#include "libgimpbase/gimpbase.h"
|
|
|
|
#include "core-types.h"
|
|
|
|
#include "gegl/gimp-gegl-utils.h"
|
|
|
|
#include "gimpchannel.h"
|
|
#include "gimpdrawable.h"
|
|
#include "gimpdrawable-foreground-extract.h"
|
|
#include "gimpimage.h"
|
|
#include "gimpprogress.h"
|
|
|
|
#include "gimp-intl.h"
|
|
|
|
|
|
/* public functions */
|
|
|
|
GeglBuffer *
|
|
gimp_drawable_foreground_extract (GimpDrawable *drawable,
|
|
GimpMattingEngine engine,
|
|
gint global_iterations,
|
|
gint levin_levels,
|
|
gint levin_active_levels,
|
|
GeglBuffer *trimap,
|
|
GimpProgress *progress)
|
|
{
|
|
GeglBuffer *drawable_buffer;
|
|
GeglNode *gegl;
|
|
GeglNode *input_node;
|
|
GeglNode *trimap_node;
|
|
GeglNode *matting_node;
|
|
GeglNode *output_node;
|
|
GeglBuffer *buffer;
|
|
GeglProcessor *processor;
|
|
gdouble value;
|
|
gint off_x, off_y;
|
|
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
|
|
g_return_val_if_fail (GEGL_IS_BUFFER (trimap), NULL);
|
|
g_return_val_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress), NULL);
|
|
|
|
progress = gimp_progress_start (progress, FALSE,
|
|
_("Computing alpha of unknown pixels"));
|
|
|
|
drawable_buffer = gimp_drawable_get_buffer (drawable);
|
|
|
|
gegl = gegl_node_new ();
|
|
|
|
trimap_node = gegl_node_new_child (gegl,
|
|
"operation", "gegl:buffer-source",
|
|
"buffer", trimap,
|
|
NULL);
|
|
input_node = gegl_node_new_child (gegl,
|
|
"operation", "gegl:buffer-source",
|
|
"buffer", drawable_buffer,
|
|
NULL);
|
|
output_node = gegl_node_new_child (gegl,
|
|
"operation", "gegl:buffer-sink",
|
|
"buffer", &buffer,
|
|
"format", NULL,
|
|
NULL);
|
|
|
|
if (engine == GIMP_MATTING_ENGINE_GLOBAL)
|
|
{
|
|
matting_node = gegl_node_new_child (gegl,
|
|
"operation", "gegl:matting-global",
|
|
"iterations", global_iterations,
|
|
NULL);
|
|
}
|
|
else
|
|
{
|
|
matting_node = gegl_node_new_child (gegl,
|
|
"operation", "gegl:matting-levin",
|
|
"levels", levin_levels,
|
|
"active_levels", levin_active_levels,
|
|
NULL);
|
|
}
|
|
|
|
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
|
|
|
|
if (off_x || off_y)
|
|
{
|
|
GeglNode *pre;
|
|
GeglNode *post;
|
|
|
|
pre = gegl_node_new_child (gegl,
|
|
"operation", "gegl:translate",
|
|
"x", -1.0 * off_x,
|
|
"y", -1.0 * off_y,
|
|
NULL);
|
|
post = gegl_node_new_child (gegl,
|
|
"operation", "gegl:translate",
|
|
"x", 1.0 * off_x,
|
|
"y", 1.0 * off_y,
|
|
NULL);
|
|
|
|
gegl_node_connect_to (trimap_node, "output", pre, "input");
|
|
gegl_node_connect_to (pre, "output", matting_node, "aux");
|
|
gegl_node_link_many (input_node, matting_node, post, output_node, NULL);
|
|
}
|
|
else
|
|
{
|
|
gegl_node_connect_to (input_node, "output",
|
|
matting_node, "input");
|
|
gegl_node_connect_to (trimap_node, "output",
|
|
matting_node, "aux");
|
|
gegl_node_connect_to (matting_node, "output",
|
|
output_node, "input");
|
|
}
|
|
|
|
processor = gegl_node_new_processor (output_node, NULL);
|
|
|
|
while (gegl_processor_work (processor, &value))
|
|
{
|
|
if (progress)
|
|
gimp_progress_set_value (progress, value);
|
|
}
|
|
|
|
if (progress)
|
|
gimp_progress_end (progress);
|
|
|
|
g_object_unref (processor);
|
|
|
|
g_object_unref (gegl);
|
|
|
|
return buffer;
|
|
}
|