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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:30:19 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:30:19 +0000 |
commit | 5c1676dfe6d2f3c837a5e074117b45613fd29a72 (patch) | |
tree | cbffb45144febf451e54061db2b21395faf94bfe /app/core/gimpdrawable-foreground-extract.c | |
parent | Initial commit. (diff) | |
download | gimp-upstream.tar.xz gimp-upstream.zip |
Adding upstream version 2.10.34.upstream/2.10.34upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'app/core/gimpdrawable-foreground-extract.c')
-rw-r--r-- | app/core/gimpdrawable-foreground-extract.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/app/core/gimpdrawable-foreground-extract.c b/app/core/gimpdrawable-foreground-extract.c new file mode 100644 index 0000000..5846363 --- /dev/null +++ b/app/core/gimpdrawable-foreground-extract.c @@ -0,0 +1,150 @@ +/* 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 <https://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; +} |