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PIKApp/plug-ins/file-raw/file-darktable.c

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/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* file-darktable.c -- raw file format plug-in that uses darktable
* Copyright (C) 2012 Simon Budig <simon@gimp.org>
* Copyright (C) 2016 Tobias Ellinghaus <me@houz.org>
*
* 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 <glib/gstdio.h>
#include <libpika/pika.h>
#include "libpika/stdplugins-intl.h"
#include "file-raw-formats.h"
#include "file-raw-utils.h"
#define LOAD_THUMB_PROC "file-darktable-load-thumb"
#define REGISTRY_KEY_BASE "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\App Paths\\darktable"
typedef struct _Darktable Darktable;
typedef struct _DarktableClass DarktableClass;
struct _Darktable
{
PikaPlugIn parent_instance;
};
struct _DarktableClass
{
PikaPlugInClass parent_class;
};
#define DARKTABLE_TYPE (darktable_get_type ())
#define DARKTABLE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), DARKTABLE_TYPE, Darktable))
GType darktable_get_type (void) G_GNUC_CONST;
static GList * darktable_init_procedures (PikaPlugIn *plug_in);
static PikaProcedure * darktable_create_procedure (PikaPlugIn *plug_in,
const gchar *name);
static PikaValueArray * darktable_load (PikaProcedure *procedure,
PikaRunMode run_mode,
GFile *file,
PikaMetadata *metadata,
PikaMetadataLoadFlags *flags,
PikaProcedureConfig *config,
gpointer run_data);
static PikaValueArray * darktable_load_thumb (PikaProcedure *procedure,
GFile *file,
gint size,
PikaProcedureConfig *config,
gpointer run_data);
static PikaImage * load_image (GFile *file,
PikaRunMode run_mode,
GError **error);
static PikaImage * load_thumbnail_image (GFile *file,
gint thumb_size,
gint *width,
gint *height,
GError **error);
G_DEFINE_TYPE (Darktable, darktable, PIKA_TYPE_PLUG_IN)
PIKA_MAIN (DARKTABLE_TYPE)
DEFINE_STD_SET_I18N
static void
darktable_class_init (DarktableClass *klass)
{
PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
plug_in_class->init_procedures = darktable_init_procedures;
plug_in_class->create_procedure = darktable_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
darktable_init (Darktable *darktable)
{
}
static GList *
darktable_init_procedures (PikaPlugIn *plug_in)
{
/* check if darktable is installed
*/
gboolean search_path = FALSE;
gchar *exec_path = file_raw_get_executable_path ("darktable", NULL,
"DARKTABLE_EXECUTABLE",
"org.darktable",
REGISTRY_KEY_BASE,
&search_path);
gchar *argv[] = { exec_path, "--version", NULL };
gchar *darktable_stdout = NULL;
gchar *darktable_stderr = NULL;
gboolean have_darktable = FALSE;
GError *error = NULL;
gint i;
/* allow the user to have some insight into why darktable may fail. */
gboolean debug_prints = g_getenv ("DARKTABLE_DEBUG") != NULL;
if (debug_prints)
g_printf ("[%s] trying to call '%s'\n", __FILE__, exec_path);
if (g_spawn_sync (NULL,
argv,
NULL,
(search_path ? G_SPAWN_SEARCH_PATH : 0),
NULL,
NULL,
&darktable_stdout,
&darktable_stderr,
NULL,
&error))
{
GRegex *regex;
GMatchInfo *matches;
gint major;
gint minor;
/* A default darktable would apparently output something like
* "this is darktable 2.2.5", but this version string is
* customizable. In the official Fedora package for instance, I
* encountered a "this is darktable darktable-2.2.5-4.fc27".
* Therefore make the version recognition a bit more flexible.
*/
regex = g_regex_new ("this is darktable [^0-9]*([0-9]+)\\.([0-9]+)\\.([0-9]+)",
0, 0, NULL);
if (g_regex_match (regex, darktable_stdout, 0, &matches))
{
gchar *match;
match = g_match_info_fetch (matches, 1);
major = g_ascii_strtoll (match, NULL, 10);
g_free (match);
match = g_match_info_fetch (matches, 2);
minor = g_ascii_strtoll (match, NULL, 10);
g_free (match);
if (((major == 1 && minor >= 7) || major >= 2))
{
if (g_strstr_len (darktable_stdout, -1,
"Lua support enabled"))
{
have_darktable = TRUE;
}
}
}
g_match_info_free (matches);
g_regex_unref (regex);
}
else if (debug_prints)
{
g_printf ("[%s] g_spawn_sync failed\n", __FILE__);
}
if (debug_prints)
{
if (error)
g_printf ("[%s] error: %s\n", __FILE__, error->message);
if (darktable_stdout && *darktable_stdout)
g_printf ("[%s] stdout:\n%s\n", __FILE__, darktable_stdout);
if (darktable_stderr && *darktable_stderr)
g_printf ("[%s] stderr:\n%s\n", __FILE__, darktable_stderr);
g_printf ("[%s] have_darktable: %d\n", __FILE__, have_darktable);
}
g_clear_error (&error);
g_free (darktable_stdout);
g_free (darktable_stderr);
g_free (exec_path);
if (have_darktable)
{
GList *list = NULL;
list = g_list_append (list, g_strdup (LOAD_THUMB_PROC));
for (i = 0; i < G_N_ELEMENTS (file_formats); i++)
{
const FileFormat *format = &file_formats[i];
gchar *load_proc;
load_proc = g_strdup_printf (format->load_proc_format, "darktable");
list = g_list_append (list, load_proc);
}
return list;
}
return NULL;
}
static PikaProcedure *
darktable_create_procedure (PikaPlugIn *plug_in,
const gchar *name)
{
PikaProcedure *procedure = NULL;
if (! strcmp (name, LOAD_THUMB_PROC))
{
procedure = pika_thumbnail_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
darktable_load_thumb, NULL, NULL);
pika_procedure_set_documentation (procedure,
"Load thumbnail from a raw image "
"via darktable",
"This plug-in loads a thumbnail "
"from a raw image by calling "
"darktable-cli.",
name);
pika_procedure_set_attribution (procedure,
"Tobias Ellinghaus",
"Tobias Ellinghaus",
"2016");
}
else
{
gint i;
for (i = 0; i < G_N_ELEMENTS (file_formats); i++)
{
const FileFormat *format = &file_formats[i];
gchar *load_proc;
gchar *load_blurb;
gchar *load_help;
load_proc = g_strdup_printf (format->load_proc_format, "darktable");
if (strcmp (name, load_proc))
{
g_free (load_proc);
continue;
}
load_blurb = g_strdup_printf (format->load_blurb_format, "darktable");
load_help = g_strdup_printf (format->load_help_format, "darktable");
procedure = pika_load_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
darktable_load,
(gpointer) format, NULL);
pika_procedure_set_documentation (procedure,
load_blurb, load_help, name);
pika_procedure_set_attribution (procedure,
"Tobias Ellinghaus",
"Tobias Ellinghaus",
"2016");
pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
format->mime_type);
pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
format->extensions);
pika_file_procedure_set_magics (PIKA_FILE_PROCEDURE (procedure),
format->magic);
pika_load_procedure_set_handles_raw (PIKA_LOAD_PROCEDURE (procedure),
TRUE);
pika_load_procedure_set_thumbnail_loader (PIKA_LOAD_PROCEDURE (procedure),
LOAD_THUMB_PROC);
g_free (load_proc);
g_free (load_blurb);
g_free (load_help);
break;
}
}
return procedure;
}
static PikaValueArray *
darktable_load (PikaProcedure *procedure,
PikaRunMode run_mode,
GFile *file,
PikaMetadata *metadata,
PikaMetadataLoadFlags *flags,
PikaProcedureConfig *config,
gpointer run_data)
{
PikaValueArray *return_vals;
PikaImage *image;
GError *error = NULL;
image = load_image (file, run_mode, &error);
if (! image)
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
error);
return_vals = pika_procedure_new_return_values (procedure,
PIKA_PDB_SUCCESS,
NULL);
PIKA_VALUES_SET_IMAGE (return_vals, 1, image);
return return_vals;
}
static PikaValueArray *
darktable_load_thumb (PikaProcedure *procedure,
GFile *file,
gint size,
PikaProcedureConfig *config,
gpointer run_data)
{
PikaValueArray *return_vals;
gint width;
gint height;
PikaImage *image = NULL;
GError *error = NULL;
width = size;
height = size;
image = load_thumbnail_image (file, width, &width, &height, &error);
if (! image)
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
error);
return_vals = pika_procedure_new_return_values (procedure,
PIKA_PDB_SUCCESS,
NULL);
PIKA_VALUES_SET_IMAGE (return_vals, 1, image);
PIKA_VALUES_SET_INT (return_vals, 2, width);
PIKA_VALUES_SET_INT (return_vals, 3, height);
PIKA_VALUES_SET_ENUM (return_vals, 4, PIKA_RGB_IMAGE);
PIKA_VALUES_SET_INT (return_vals, 5, 1);
pika_value_array_truncate (return_vals, 6);
return return_vals;
}
static PikaImage *
load_image (GFile *file,
PikaRunMode run_mode,
GError **error)
{
PikaImage *image = NULL;
GFile *lua_file = pika_data_directory_file ("file-raw",
"file-darktable-export-on-exit.lua",
NULL);
gchar *lua_script_escaped = g_strescape (g_file_peek_path (lua_file), "");
gchar *lua_quoted = g_shell_quote (lua_script_escaped);
gchar *lua_cmd = g_strdup_printf ("dofile(%s)", lua_quoted);
GFile *file_out = pika_temp_file ("exr");
gchar *export_filename = g_strdup_printf ("lua/export_on_exit/export_filename=%s",
g_file_peek_path (file_out));
gchar *darktable_stdout = NULL;
gchar *darktable_stderr = NULL;
/* allow the user to have some insight into why darktable may fail. */
gboolean debug_prints = g_getenv ("DARKTABLE_DEBUG") != NULL;
/* linear sRGB for now as PIKA uses that internally in many places anyway */
gboolean search_path = FALSE;
gchar *exec_path = file_raw_get_executable_path ("darktable", NULL,
"DARKTABLE_EXECUTABLE",
"org.darktable",
REGISTRY_KEY_BASE,
&search_path);
gchar *argv[] =
{
exec_path,
"--library", ":memory:",
"--luacmd", lua_cmd,
"--conf", "plugins/lighttable/export/icctype=3",
"--conf", export_filename,
(gchar *) g_file_peek_path (file),
NULL
};
g_object_unref (lua_file);
g_free (lua_script_escaped);
g_free (lua_quoted);
pika_progress_init_printf (_("Opening '%s'"),
pika_file_get_utf8_name (file));
if (debug_prints)
{
gchar **environ_ = g_get_environ ();
gint i;
g_printf ("[%s] trying to call\n", __FILE__);
for (gchar **iter = argv; *iter; iter++)
g_printf (" %s\n", *iter);
g_printf ("\n");
g_printf ("## Environment ##\n");
for (i = 0; environ_[i]; i++)
g_printf ("- %s\n", environ_[i]);
g_strfreev (environ_) ;
}
if (g_spawn_sync (NULL,
argv,
NULL,
/*G_SPAWN_STDOUT_TO_DEV_NULL |*/
/*G_SPAWN_STDERR_TO_DEV_NULL |*/
(search_path ? G_SPAWN_SEARCH_PATH : 0),
NULL,
NULL,
&darktable_stdout,
&darktable_stderr,
NULL,
error))
{
image = pika_file_load (run_mode, file_out);
}
if (debug_prints)
{
if (darktable_stdout && *darktable_stdout)
g_printf ("\n## stdout ##\n%s\n", darktable_stdout);
if (darktable_stderr && *darktable_stderr)
g_printf ("\n## stderr ##\n%s\n", darktable_stderr);
}
g_free (darktable_stdout);
g_free (darktable_stderr);
g_file_delete (file_out, NULL, NULL);
g_free (lua_cmd);
g_free (export_filename);
g_free (exec_path);
pika_progress_update (1.0);
return image;
}
static PikaImage *
load_thumbnail_image (GFile *file,
gint thumb_size,
gint *width,
gint *height,
GError **error)
{
PikaImage *image = NULL;
GFile *file_out = pika_temp_file ("jpg");
gchar *size = g_strdup_printf ("%d", thumb_size);
GFile *lua_file = pika_data_directory_file ("file-raw",
"file-darktable-get-size.lua",
NULL);
gchar *lua_script_escaped = g_strescape (g_file_peek_path (lua_file), "");
gchar *lua_quoted = g_shell_quote (lua_script_escaped);
gchar *lua_cmd = g_strdup_printf ("dofile(%s)", lua_quoted);
gchar *darktable_stdout = NULL;
gboolean search_path = FALSE;
gchar *exec_path = file_raw_get_executable_path ("darktable", "-cli",
"DARKTABLE_EXECUTABLE",
"org.darktable",
REGISTRY_KEY_BASE,
&search_path);
gchar *argv[] =
{
exec_path,
(gchar *) g_file_peek_path (file),
(gchar *) g_file_peek_path (file_out),
"--width", size,
"--height", size,
"--hq", "false",
"--core",
"--conf", "plugins/lighttable/export/icctype=3",
"--luacmd", lua_cmd,
NULL
};
g_object_unref (lua_file);
g_free (lua_script_escaped);
g_free (lua_quoted);
pika_progress_init_printf (_("Opening thumbnail for '%s'"),
pika_file_get_utf8_name (file));
*width = *height = 0;
if (g_spawn_sync (NULL,
argv,
NULL,
G_SPAWN_STDERR_TO_DEV_NULL |
(search_path ? G_SPAWN_SEARCH_PATH : 0),
NULL,
NULL,
&darktable_stdout,
NULL,
NULL,
error))
{
pika_progress_update (0.5);
image = pika_file_load (PIKA_RUN_NONINTERACTIVE, file_out);
if (image)
{
/* the size reported by raw files isn't precise,
* but it should be close enough to get an idea.
*/
gchar *start_of_size = g_strstr_len (darktable_stdout,
-1,
"[dt4pika]");
if (start_of_size)
sscanf (start_of_size, "[dt4pika] %d %d", width, height);
}
}
pika_progress_update (1.0);
g_file_delete (file_out, NULL, NULL);
g_free (size);
g_free (lua_cmd);
g_free (darktable_stdout);
g_free (exec_path);
return image;
}
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