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/*
* $Id: dwt.c 23666 2021-05-10 21:56:10Z yeti-dn $
* Copyright (C) 2003-2021 David Necas (Yeti), Petr Klapetek.
* E-mail: yeti@gwyddion.net, klapetek@gwyddion.net.
*
* 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 2 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, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include <libgwyddion/gwymacros.h>
#include <libgwyddion/gwymath.h>
#include <libgwyddion/gwyenum.h>
#include <libprocess/stats.h>
#include <libprocess/inttrans.h>
#include <libprocess/dwt.h>
#include <libprocess/gwyprocesstypes.h>
#include <libgwydgets/gwystock.h>
#include <libgwymodule/gwymodule-process.h>
#include <app/gwyapp.h>
#include "preview.h"
#define RUN_MODES (GWY_RUN_IMMEDIATE | GWY_RUN_INTERACTIVE)
enum {
PARAM_INTERP,
PARAM_WAVELET,
PARAM_INVERSE_TRANSFORM,
};
typedef struct {
GwyParams *params;
GwyDataField *field;
GwyDataField *result;
/* Cached input image properties. */
gint goodsize;
} ModuleArgs;
typedef struct {
ModuleArgs *args;
GtkWidget *dialog;
GwyParamTable *table;
} ModuleGUI;
static gboolean module_register (void);
static GwyParamDef* define_module_params(void);
static void dwt (GwyContainer *data,
GwyRunType runtype);
static void execute (ModuleArgs *args);
static GwyDialogOutcome run_gui (ModuleArgs *args);
static GwyModuleInfo module_info = {
GWY_MODULE_ABI_VERSION,
&module_register,
N_("Two-dimensional DWT (Discrete Wavelet Transform)."),
"Petr Klapetek <klapetek@gwyddion.net>",
"2.0",
"David Nečas (Yeti) & Petr Klapetek",
"2003",
};
GWY_MODULE_QUERY2(module_info, dwt)
static gboolean
module_register(void)
{
gwy_process_func_register("dwt",
(GwyProcessFunc)&dwt,
N_("/_Integral Transforms/2D _DWT..."),
GWY_STOCK_DWT,
RUN_MODES,
GWY_MENU_FLAG_DATA,
N_("Compute Discrete Wavelet Transform"));
return TRUE;
}
static GwyParamDef*
define_module_params(void)
{
static GwyParamDef *paramdef = NULL;
if (paramdef)
return paramdef;
paramdef = gwy_param_def_new();
gwy_param_def_set_function_name(paramdef, gwy_process_func_current());
gwy_param_def_add_enum(paramdef, PARAM_INTERP, "interp", NULL,
GWY_TYPE_INTERPOLATION_TYPE, GWY_INTERPOLATION_LINEAR);
gwy_param_def_add_gwyenum(paramdef, PARAM_WAVELET, "wavelet", _("_Wavelet type"),
gwy_dwt_type_get_enum(), -1, GWY_DWT_DAUB12);
gwy_param_def_add_boolean(paramdef, PARAM_INVERSE_TRANSFORM, "inverse_transform", _("_Inverse transform"), FALSE);
return paramdef;
}
static void
dwt(GwyContainer *data, GwyRunType runtype)
{
GwyDialogOutcome outcome;
ModuleArgs args;
gint id, newid, i;
gwy_clear(&args, 1);
g_return_if_fail(runtype & RUN_MODES);
gwy_app_data_browser_get_current(GWY_APP_DATA_FIELD, &args.field,
GWY_APP_DATA_FIELD_ID, &id,
0);
g_return_if_fail(args.field);
if (!gwy_require_square_image(args.field, data, id, _("DWT")))
return;
args.goodsize = 1;
for (i = gwy_data_field_get_xres(args.field)-1; i; i >>= 1)
args.goodsize <<= 1;
args.params = gwy_params_new_from_settings(define_module_params());
if (runtype == GWY_RUN_INTERACTIVE) {
outcome = run_gui(&args);
gwy_params_save_to_settings(args.params);
if (outcome == GWY_DIALOG_CANCEL)
goto end;
}
execute(&args);
newid = gwy_app_data_browser_add_data_field(args.result, data, TRUE);
gwy_app_set_data_field_title(data, newid, _("DWT"));
gwy_app_sync_data_items(data, data, id, newid, FALSE,
GWY_DATA_ITEM_GRADIENT,
GWY_DATA_ITEM_REAL_SQUARE,
0);
gwy_app_channel_log_add_proc(data, id, newid);
end:
GWY_OBJECT_UNREF(args.result);
g_object_unref(args.params);
}
static GwyDialogOutcome
run_gui(ModuleArgs *args)
{
gint xres = gwy_data_field_get_xres(args->field);
GwyDialog *dialog;
GwyParamTable *table;
ModuleGUI gui;
gchar *s;
gui.args = args;
gui.dialog = gwy_dialog_new(_("2D DWT"));
dialog = GWY_DIALOG(gui.dialog);
gwy_dialog_add_buttons(dialog, GWY_RESPONSE_RESET, GTK_RESPONSE_CANCEL, GTK_RESPONSE_OK, 0);
table = gui.table = gwy_param_table_new(args->params);
gwy_param_table_append_combo(table, PARAM_WAVELET);
gwy_param_table_append_checkbox(table, PARAM_INVERSE_TRANSFORM);
gwy_param_table_set_sensitive(table, PARAM_INVERSE_TRANSFORM, xres == args->goodsize);
if (xres != args->goodsize) {
gwy_param_table_append_separator(table);
s = g_strdup_printf(_("Size %d is not a power of 2."), xres);
gwy_param_table_append_message(table, -1, s);
g_free(s);
s = g_strdup_printf(_("Image will be resampled to %d×%d for DWT."), args->goodsize, args->goodsize);
gwy_param_table_append_message(table, -1, s);
g_free(s);
gwy_param_table_append_separator(table);
}
gwy_param_table_append_combo(table, PARAM_INTERP);
gwy_param_table_set_sensitive(table, PARAM_INTERP, xres != args->goodsize);
gwy_dialog_add_content(dialog, gwy_param_table_widget(table), FALSE, FALSE, 0);
gwy_dialog_add_param_table(dialog, table);
return gwy_dialog_run(dialog);
}
static void
execute(ModuleArgs *args)
{
GwyDWTType wavelet = gwy_params_get_enum(args->params, PARAM_WAVELET);
GwyInterpolationType interp = gwy_params_get_enum(args->params, PARAM_INTERP);
gboolean is_inverse = gwy_params_get_boolean(args->params, PARAM_INVERSE_TRANSFORM);
GwyTransformDirection dir = (is_inverse ? GWY_TRANSFORM_DIRECTION_BACKWARD : GWY_TRANSFORM_DIRECTION_FORWARD);
GwyDataField *field = args->field, *result;
GwyDataLine *wtcoefs;
result = args->result = gwy_data_field_new_resampled(field, args->goodsize, args->goodsize, interp);
if (!is_inverse)
gwy_data_field_add(result, -gwy_data_field_get_avg(result));
wtcoefs = gwy_data_line_new(1, 1.0, TRUE);
wtcoefs = gwy_dwt_set_coefficients(wtcoefs, wavelet);
gwy_data_field_dwt(result, wtcoefs, dir, 4);
g_object_unref(wtcoefs);
}
/* vim: set cin columns=120 tw=118 et ts=4 sw=4 cino=>1s,e0,n0,f0,{0,}0,^0,\:1s,=0,g1s,h0,t0,+1s,c3,(0,u0 : */
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