530 lines
16 KiB
C
530 lines
16 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* file-gegl.c -- GEGL based file format plug-in
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* Copyright (C) 2012 Simon Budig <simon@gimp.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <errno.h>
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#include <glib/gstdio.h>
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#include <libpika/pika.h>
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#include <libpika/pikaui.h>
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#include "libpika/stdplugins-intl.h"
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#define PLUG_IN_BINARY "file-gegl"
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typedef struct _FileFormat FileFormat;
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struct _FileFormat
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{
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const gchar *file_type;
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const gchar *mime_type;
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const gchar *extensions;
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const gchar *magic;
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const gchar *load_proc;
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const gchar *load_blurb;
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const gchar *load_help;
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const gchar *load_op;
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const gchar *save_proc;
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const gchar *save_blurb;
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const gchar *save_help;
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const gchar *save_op;
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};
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typedef struct _Goat Goat;
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typedef struct _GoatClass GoatClass;
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struct _Goat
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{
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PikaPlugIn parent_instance;
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};
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struct _GoatClass
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{
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PikaPlugInClass parent_class;
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};
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#define GOAT_TYPE (goat_get_type ())
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#define GOAT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GOAT_TYPE, Goat))
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GType goat_get_type (void) G_GNUC_CONST;
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static GList * goat_query_procedures (PikaPlugIn *plug_in);
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static PikaProcedure * goat_create_procedure (PikaPlugIn *plug_in,
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const gchar *name);
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static PikaValueArray * goat_load (PikaProcedure *procedure,
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PikaRunMode run_mode,
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GFile *file,
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PikaMetadata *metadata,
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PikaMetadataLoadFlags *flags,
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PikaProcedureConfig *config,
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gpointer run_data);
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static PikaValueArray * goat_save (PikaProcedure *procedure,
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PikaRunMode run_mode,
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PikaImage *image,
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gint n_drawables,
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PikaDrawable **drawables,
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GFile *file,
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PikaMetadata *metadata,
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PikaProcedureConfig *config,
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gpointer run_data);
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static PikaImage * load_image (GFile *file,
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const gchar *gegl_op,
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GError **error);
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static gboolean save_image (GFile *file,
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const gchar *gegl_op,
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PikaImage *image,
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PikaDrawable *drawable,
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GError **error);
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G_DEFINE_TYPE (Goat, goat, PIKA_TYPE_PLUG_IN)
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PIKA_MAIN (GOAT_TYPE)
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DEFINE_STD_SET_I18N
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static const FileFormat file_formats[] =
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{
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{
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N_("Radiance RGBE"),
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"image/vnd.radiance",
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"hdr",
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"0,string,#?",
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"file-load-rgbe",
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"Load files in the RGBE file format",
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"This procedure loads images in the RGBE format, using gegl:rgbe-load",
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"gegl:rgbe-load",
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"file-save-rgbe",
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"Saves files in the RGBE file format",
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"This procedure exports images in the RGBE format, using gegl:rgbe-save",
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"gegl:rgbe-save",
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},
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{
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N_("OpenEXR image"),
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"image/x-exr",
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"exr",
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"0,lelong,20000630",
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/* no EXR loading (implemented in native PIKA plug-in) */
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NULL, NULL, NULL, NULL,
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"file-exr-save",
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"Saves files in the OpenEXR file format",
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"This procedure saves images in the OpenEXR format, using gegl:exr-save",
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"gegl:exr-save"
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}
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};
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static void
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goat_class_init (GoatClass *klass)
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{
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PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
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plug_in_class->query_procedures = goat_query_procedures;
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plug_in_class->create_procedure = goat_create_procedure;
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plug_in_class->set_i18n = STD_SET_I18N;
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}
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static void
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goat_init (Goat *goat)
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{
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}
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static GList *
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goat_query_procedures (PikaPlugIn *plug_in)
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{
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GList *list = NULL;
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gint i;
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for (i = 0; i < G_N_ELEMENTS (file_formats); i++)
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{
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const FileFormat *format = &file_formats[i];
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if (format->load_proc)
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list = g_list_append (list, g_strdup (format->load_proc));
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if (format->save_proc)
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list = g_list_append (list, g_strdup (format->save_proc));
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}
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return list;
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}
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static PikaProcedure *
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goat_create_procedure (PikaPlugIn *plug_in,
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const gchar *name)
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{
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PikaProcedure *procedure = NULL;
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gint i;
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for (i = 0; i < G_N_ELEMENTS (file_formats); i++)
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{
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const FileFormat *format = &file_formats[i];
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if (! g_strcmp0 (name, format->load_proc))
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{
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procedure = pika_load_procedure_new (plug_in, name,
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PIKA_PDB_PROC_TYPE_PLUGIN,
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goat_load,
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(gpointer) format, NULL);
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pika_procedure_set_menu_label (procedure, format->file_type);
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pika_procedure_set_documentation (procedure,
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format->load_blurb,
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format->load_help,
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name);
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pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
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format->mime_type);
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pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
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format->extensions);
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pika_file_procedure_set_magics (PIKA_FILE_PROCEDURE (procedure),
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format->magic);
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}
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else if (! g_strcmp0 (name, format->save_proc))
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{
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procedure = pika_save_procedure_new (plug_in, name,
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PIKA_PDB_PROC_TYPE_PLUGIN,
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FALSE, goat_save,
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(gpointer) format, NULL);
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pika_procedure_set_image_types (procedure, "*");
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pika_procedure_set_menu_label (procedure, format->file_type);
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pika_procedure_set_documentation (procedure,
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format->save_blurb,
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format->save_help,
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name);
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pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
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format->mime_type);
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pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
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format->extensions);
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}
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}
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return procedure;
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}
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static PikaValueArray *
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goat_load (PikaProcedure *procedure,
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PikaRunMode run_mode,
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GFile *file,
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PikaMetadata *metadata,
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PikaMetadataLoadFlags *flags,
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PikaProcedureConfig *config,
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gpointer run_data)
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{
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const FileFormat *format = run_data;
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PikaValueArray *return_vals;
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PikaImage *image;
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GError *error = NULL;
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gegl_init (NULL, NULL);
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image = load_image (file, format->load_op, &error);
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if (! image)
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return pika_procedure_new_return_values (procedure,
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PIKA_PDB_EXECUTION_ERROR,
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error);
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return_vals = pika_procedure_new_return_values (procedure,
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PIKA_PDB_SUCCESS,
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NULL);
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PIKA_VALUES_SET_IMAGE (return_vals, 1, image);
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return return_vals;
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}
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static PikaValueArray *
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goat_save (PikaProcedure *procedure,
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PikaRunMode run_mode,
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PikaImage *image,
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gint n_drawables,
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PikaDrawable **drawables,
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GFile *file,
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PikaMetadata *metadata,
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PikaProcedureConfig *config,
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gpointer run_data)
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{
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const FileFormat *format = run_data;
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PikaPDBStatusType status = PIKA_PDB_SUCCESS;
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PikaExportReturn export = PIKA_EXPORT_CANCEL;
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GError *error = NULL;
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gegl_init (NULL, NULL);
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switch (run_mode)
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{
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case PIKA_RUN_INTERACTIVE:
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case PIKA_RUN_WITH_LAST_VALS:
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pika_ui_init (PLUG_IN_BINARY);
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export = pika_export_image (&image, &n_drawables, &drawables, "GEGL",
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PIKA_EXPORT_CAN_HANDLE_RGB |
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PIKA_EXPORT_CAN_HANDLE_GRAY |
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PIKA_EXPORT_CAN_HANDLE_INDEXED |
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PIKA_EXPORT_CAN_HANDLE_ALPHA);
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if (export == PIKA_EXPORT_CANCEL)
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return pika_procedure_new_return_values (procedure,
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PIKA_PDB_CANCEL,
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NULL);
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break;
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default:
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break;
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}
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if (n_drawables != 1)
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{
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g_set_error (&error, G_FILE_ERROR, 0,
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_("GEGL export plug-in does not support multiple layers."));
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return pika_procedure_new_return_values (procedure,
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PIKA_PDB_CALLING_ERROR,
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error);
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}
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if (! save_image (file, format->save_op, image, drawables[0],
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&error))
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{
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status = PIKA_PDB_EXECUTION_ERROR;
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}
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if (export == PIKA_EXPORT_EXPORT)
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{
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pika_image_delete (image);
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g_free (drawables);
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}
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return pika_procedure_new_return_values (procedure, status, error);
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}
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static PikaImage *
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load_image (GFile *file,
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const gchar *gegl_op,
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GError **error)
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{
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PikaImage *image;
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PikaLayer *layer;
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PikaImageType image_type;
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PikaImageBaseType base_type;
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PikaPrecision precision;
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gint width;
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gint height;
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GeglNode *graph;
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GeglNode *sink;
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GeglNode *source;
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GeglBuffer *src_buf = NULL;
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GeglBuffer *dest_buf = NULL;
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const Babl *format;
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pika_progress_init_printf (_("Opening '%s'"),
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pika_file_get_utf8_name (file));
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graph = gegl_node_new ();
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source = gegl_node_new_child (graph,
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"operation", gegl_op,
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"path", g_file_peek_path (file),
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NULL);
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sink = gegl_node_new_child (graph,
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"operation", "gegl:buffer-sink",
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"buffer", &src_buf,
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NULL);
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gegl_node_link (source, sink);
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gegl_node_process (sink);
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g_object_unref (graph);
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if (! src_buf)
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{
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g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
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_("Could not open '%s'"),
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pika_file_get_utf8_name (file));
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return NULL;
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}
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pika_progress_update (0.33);
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width = gegl_buffer_get_width (src_buf);
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height = gegl_buffer_get_height (src_buf);
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format = gegl_buffer_get_format (src_buf);
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if (babl_format_is_palette (format))
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{
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base_type = PIKA_INDEXED;
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if (babl_format_has_alpha (format))
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image_type = PIKA_INDEXEDA_IMAGE;
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else
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image_type = PIKA_INDEXED_IMAGE;
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precision = PIKA_PRECISION_U8_NON_LINEAR;
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}
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else
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{
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const Babl *model = babl_format_get_model (format);
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const Babl *type = babl_format_get_type (format, 0);
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gboolean linear = TRUE;
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if (model == babl_model ("Y") ||
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model == babl_model ("Y'") ||
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model == babl_model ("YA") ||
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model == babl_model ("Y'A"))
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{
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base_type = PIKA_GRAY;
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if (babl_format_has_alpha (format))
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image_type = PIKA_GRAYA_IMAGE;
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else
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image_type = PIKA_GRAY_IMAGE;
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if (model == babl_model ("Y'") ||
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model == babl_model ("Y'A"))
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linear = FALSE;
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}
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else
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{
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base_type = PIKA_RGB;
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if (babl_format_has_alpha (format))
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image_type = PIKA_RGBA_IMAGE;
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else
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image_type = PIKA_RGB_IMAGE;
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if (model == babl_model ("R'G'B'") ||
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model == babl_model ("R'G'B'A"))
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linear = FALSE;
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}
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if (linear)
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{
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if (type == babl_type ("u8"))
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precision = PIKA_PRECISION_U8_LINEAR;
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else if (type == babl_type ("u16"))
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precision = PIKA_PRECISION_U16_LINEAR;
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else if (type == babl_type ("u32"))
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precision = PIKA_PRECISION_U32_LINEAR;
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else if (type == babl_type ("half"))
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precision = PIKA_PRECISION_HALF_LINEAR;
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else
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precision = PIKA_PRECISION_FLOAT_LINEAR;
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}
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else
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{
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if (type == babl_type ("u8"))
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precision = PIKA_PRECISION_U8_NON_LINEAR;
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else if (type == babl_type ("u16"))
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precision = PIKA_PRECISION_U16_NON_LINEAR;
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else if (type == babl_type ("u32"))
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precision = PIKA_PRECISION_U32_NON_LINEAR;
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else if (type == babl_type ("half"))
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precision = PIKA_PRECISION_HALF_NON_LINEAR;
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else
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precision = PIKA_PRECISION_FLOAT_NON_LINEAR;
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}
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}
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image = pika_image_new_with_precision (width, height,
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base_type, precision);
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layer = pika_layer_new (image,
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_("Background"),
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width, height,
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image_type,
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100,
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pika_image_get_default_new_layer_mode (image));
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pika_image_insert_layer (image, layer, NULL, 0);
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dest_buf = pika_drawable_get_buffer (PIKA_DRAWABLE (layer));
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pika_progress_update (0.66);
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gegl_buffer_copy (src_buf, NULL, GEGL_ABYSS_NONE, dest_buf, NULL);
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g_object_unref (src_buf);
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g_object_unref (dest_buf);
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pika_progress_update (1.0);
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return image;
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}
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static gboolean
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save_image (GFile *file,
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const gchar *gegl_op,
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PikaImage *image,
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PikaDrawable *drawable,
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GError **error)
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{
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GeglNode *graph;
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GeglNode *source;
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GeglNode *sink;
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GeglBuffer *src_buf;
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src_buf = pika_drawable_get_buffer (drawable);
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graph = gegl_node_new ();
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source = gegl_node_new_child (graph,
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"operation", "gegl:buffer-source",
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"buffer", src_buf,
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NULL);
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sink = gegl_node_new_child (graph,
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"operation", gegl_op,
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"path", g_file_peek_path (file),
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NULL);
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gegl_node_link (source, sink);
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gegl_node_process (sink);
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g_object_unref (graph);
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g_object_unref (src_buf);
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return TRUE;
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}
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