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gimp/plug-ins/common/destripe.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* Destripe filter
*
* Copyright 1997 Marc Lehmann, heavily modified from a filter by
* Michael Sweet.
*
* 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 <string.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define PLUG_IN_PROC "plug-in-destripe"
#define PLUG_IN_BINARY "destripe"
#define PLUG_IN_ROLE "gimp-destripe"
#define PLUG_IN_VERSION "0.2"
#define SCALE_WIDTH 140
#define MAX_AVG 100
typedef struct
{
gboolean histogram;
gint avg_width;
gboolean preview;
} DestripeValues;
typedef struct _Destripe Destripe;
typedef struct _DestripeClass DestripeClass;
struct _Destripe
{
GimpPlugIn parent_instance;
};
struct _DestripeClass
{
GimpPlugInClass parent_class;
};
#define DESTRIPE_TYPE (destripe_get_type ())
#define DESTRIPE (obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), DESTRIPE_TYPE, Destripe))
GType destripe_get_type (void) G_GNUC_CONST;
static GList * destripe_query_procedures (GimpPlugIn *plug_in);
static GimpProcedure * destripe_create_procedure (GimpPlugIn *plug_in,
const gchar *name);
static GimpValueArray * destripe_run (GimpProcedure *procedure,
GimpRunMode run_mode,
GimpImage *image,
GimpDrawable *drawable,
const GimpValueArray *args,
gpointer run_data);
static void destripe (GimpDrawable *drawable,
GimpPreview *preview);
static void destripe_preview (GimpDrawable *drawable,
GimpPreview *preview);
static gboolean destripe_dialog (GimpDrawable *drawable);
G_DEFINE_TYPE (Destripe, destripe, GIMP_TYPE_PLUG_IN)
GIMP_MAIN (DESTRIPE_TYPE)
static DestripeValues vals =
{
FALSE, /* histogram */
36, /* average width */
TRUE /* preview */
};
static void
destripe_class_init (DestripeClass *klass)
{
GimpPlugInClass *plug_in_class = GIMP_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = destripe_query_procedures;
plug_in_class->create_procedure = destripe_create_procedure;
}
static void
destripe_init (Destripe *destripe)
{
}
static GList *
destripe_query_procedures (GimpPlugIn *plug_in)
{
return g_list_append (NULL, g_strdup (PLUG_IN_PROC));
}
static GimpProcedure *
destripe_create_procedure (GimpPlugIn *plug_in,
const gchar *name)
{
GimpProcedure *procedure = NULL;
if (! strcmp (name, PLUG_IN_PROC))
{
procedure = gimp_image_procedure_new (plug_in, name,
GIMP_PDB_PROC_TYPE_PLUGIN,
destripe_run, NULL, NULL);
gimp_procedure_set_image_types (procedure, "RGB*, GRAY*");
gimp_procedure_set_menu_label (procedure, N_("Des_tripe..."));
gimp_procedure_add_menu_path (procedure, "<Image>/Colors/Tone Mapping");
gimp_procedure_set_documentation (procedure,
N_("Remove vertical stripe artifacts "
"from the image"),
"This plug-in tries to remove vertical "
"stripes from an image.",
name);
gimp_procedure_set_attribution (procedure,
"Marc Lehmann <pcg@goof.com>",
"Marc Lehmann <pcg@goof.com>",
PLUG_IN_VERSION);
GIMP_PROC_ARG_INT (procedure, "avg-width",
"Avg width",
"Averaging filter width",
2, MAX_AVG, 36,
G_PARAM_READWRITE);
}
return procedure;
}
static GimpValueArray *
destripe_run (GimpProcedure *procedure,
GimpRunMode run_mode,
GimpImage *image,
GimpDrawable *drawable,
const GimpValueArray *args,
gpointer run_data)
{
INIT_I18N ();
gegl_init (NULL, NULL);
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
gimp_get_data (PLUG_IN_PROC, &vals);
if (! destripe_dialog (drawable))
{
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_CANCEL,
NULL);
}
break;
case GIMP_RUN_NONINTERACTIVE:
vals.avg_width = GIMP_VALUES_GET_INT (args, 0);
break;
case GIMP_RUN_WITH_LAST_VALS :
gimp_get_data (PLUG_IN_PROC, &vals);
break;
};
if (gimp_drawable_is_rgb (drawable) ||
gimp_drawable_is_gray (drawable))
{
destripe (drawable, NULL);
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
if (run_mode == GIMP_RUN_INTERACTIVE)
gimp_set_data (PLUG_IN_PROC, &vals, sizeof (vals));
}
else
{
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_EXECUTION_ERROR,
NULL);
}
return gimp_procedure_new_return_values (procedure, GIMP_PDB_SUCCESS, NULL);
}
static void
destripe (GimpDrawable *drawable,
GimpPreview *preview)
{
GeglBuffer *src_buffer;
GeglBuffer *dest_buffer;
const Babl *format;
guchar *src_rows; /* image data */
gdouble progress, progress_inc;
gint x1, x2, y1;
gint width, height;
gint bpp;
glong *hist, *corr; /* "histogram" data */
gint tile_width = gimp_tile_width ();
gint i, x, y, ox, cols;
progress = 0.0;
progress_inc = 0.0;
if (preview)
{
gimp_preview_get_position (preview, &x1, &y1);
gimp_preview_get_size (preview, &width, &height);
}
else
{
gimp_progress_init (_("Destriping"));
if (! gimp_drawable_mask_intersect (drawable,
&x1, &y1, &width, &height))
{
return;
}
progress = 0;
progress_inc = 0.5 * tile_width / width;
}
x2 = x1 + width;
if (gimp_drawable_is_rgb (drawable))
{
if (gimp_drawable_has_alpha (drawable))
format = babl_format ("R'G'B'A u8");
else
format = babl_format ("R'G'B' u8");
}
else
{
if (gimp_drawable_has_alpha (drawable))
format = babl_format ("Y'A u8");
else
format = babl_format ("Y' u8");
}
bpp = babl_format_get_bytes_per_pixel (format);
/*
* Setup for filter...
*/
src_buffer = gimp_drawable_get_buffer (drawable);
dest_buffer = gimp_drawable_get_shadow_buffer (drawable);
hist = g_new (long, width * bpp);
corr = g_new (long, width * bpp);
src_rows = g_new (guchar, tile_width * height * bpp);
memset (hist, 0, width * bpp * sizeof (long));
/*
* collect "histogram" data.
*/
for (ox = x1; ox < x2; ox += tile_width)
{
guchar *rows = src_rows;
cols = x2 - ox;
if (cols > tile_width)
cols = tile_width;
gegl_buffer_get (src_buffer, GEGL_RECTANGLE (ox, y1, cols, height), 1.0,
format, rows,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
for (y = 0; y < height; y++)
{
long *h = hist + (ox - x1) * bpp;
guchar *row_end = rows + cols * bpp;
while (rows < row_end)
*h++ += *rows++;
}
if (! preview)
gimp_progress_update (progress += progress_inc);
}
/*
* average out histogram
*/
{
gint extend = (vals.avg_width / 2) * bpp;
for (i = 0; i < MIN (3, bpp); i++)
{
long *h = hist - extend + i;
long *c = corr - extend + i;
long sum = 0;
gint cnt = 0;
for (x = -extend; x < width * bpp; x += bpp)
{
if (x + extend < width * bpp)
{
sum += h[ extend]; cnt++;
}
if (x - extend >= 0)
{
sum -= h[-extend]; cnt--;
}
if (x >= 0)
{
if (*h)
*c = ((sum / cnt - *h) << 10) / *h;
else
*c = G_MAXINT;
}
h += bpp;
c += bpp;
}
}
}
/*
* remove stripes.
*/
for (ox = x1; ox < x2; ox += tile_width)
{
guchar *rows = src_rows;
cols = x2 - ox;
if (cols > tile_width)
cols = tile_width;
gegl_buffer_get (src_buffer, GEGL_RECTANGLE (ox, y1, cols, height), 1.0,
format, rows,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
if (! preview)
gimp_progress_update (progress += progress_inc);
for (y = 0; y < height; y++)
{
long *c = corr + (ox - x1) * bpp;
guchar *row_end = rows + cols * bpp;
if (vals.histogram)
{
while (rows < row_end)
{
*rows = MIN (255, MAX (0, 128 + (*rows * *c >> 10)));
c++; rows++;
}
}
else
{
while (rows < row_end)
{
*rows = MIN (255, MAX (0, *rows + (*rows * *c >> 10) ));
c++; rows++;
}
}
}
gegl_buffer_set (dest_buffer, GEGL_RECTANGLE (ox, y1, cols, height), 0,
format, src_rows,
GEGL_AUTO_ROWSTRIDE);
if (! preview)
gimp_progress_update (progress += progress_inc);
}
g_free (src_rows);
g_object_unref (src_buffer);
if (preview)
{
guchar *buffer = g_new (guchar, width * height * bpp);
gegl_buffer_get (dest_buffer, GEGL_RECTANGLE (x1, y1, width, height), 1.0,
format, buffer,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
gimp_preview_draw_buffer (GIMP_PREVIEW (preview),
buffer, width * bpp);
g_free (buffer);
g_object_unref (dest_buffer);
}
else
{
g_object_unref (dest_buffer);
gimp_progress_update (1.0);
gimp_drawable_merge_shadow (drawable, TRUE);
gimp_drawable_update (drawable,
x1, y1, width, height);
}
g_free (hist);
g_free (corr);
}
static void
destripe_preview (GimpDrawable *drawable,
GimpPreview *preview)
{
destripe (drawable, preview);
}
static gboolean
destripe_dialog (GimpDrawable *drawable)
{
GtkWidget *dialog;
GtkWidget *main_vbox;
GtkWidget *preview;
GtkWidget *grid;
GtkWidget *button;
GtkAdjustment *adj;
gboolean run;
gimp_ui_init (PLUG_IN_BINARY);
dialog = gimp_dialog_new (_("Destripe"), PLUG_IN_ROLE,
NULL, 0,
gimp_standard_help_func, PLUG_IN_PROC,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_OK"), GTK_RESPONSE_OK,
NULL);
gimp_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
gimp_window_set_transient (GTK_WINDOW (dialog));
main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
main_vbox, TRUE, TRUE, 0);
gtk_widget_show (main_vbox);
preview = gimp_drawable_preview_new_from_drawable (drawable);
gtk_box_pack_start (GTK_BOX (main_vbox), preview, TRUE, TRUE, 0);
gtk_widget_show (preview);
g_signal_connect_swapped (preview, "invalidated",
G_CALLBACK (destripe_preview),
drawable);
grid = gtk_grid_new ();
gtk_grid_set_column_spacing (GTK_GRID (grid), 6);
gtk_box_pack_start (GTK_BOX (main_vbox), grid, FALSE, FALSE, 0);
gtk_widget_show (grid);
adj = gimp_scale_entry_new (GTK_GRID (grid), 0, 1,
_("_Width:"), SCALE_WIDTH, 0,
vals.avg_width, 2, MAX_AVG, 1, 10, 0,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&vals.avg_width);
g_signal_connect_swapped (adj, "value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
button = gtk_check_button_new_with_mnemonic (_("Create _histogram"));
gtk_box_pack_start (GTK_BOX (main_vbox), button, FALSE, FALSE, 0);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), vals.histogram);
gtk_widget_show (button);
g_signal_connect (button, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&vals.histogram);
g_signal_connect_swapped (button, "toggled",
G_CALLBACK (gimp_preview_invalidate),
preview);
gtk_widget_show (dialog);
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
gtk_widget_destroy (dialog);
return run;
}
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