Commit 37020eef authored by Debarshi Ray's avatar Debarshi Ray

Add a saturation filter

parent 2c2fdea4
......@@ -136,6 +136,8 @@ gnome_photos_SOURCES = \
photos-operation-jpg-guess-sizes.h \
photos-operation-png-guess-sizes.c \
photos-operation-png-guess-sizes.h \
photos-operation-saturation.c \
photos-operation-saturation.h \
photos-organize-collection-dialog.c \
photos-organize-collection-dialog.h \
photos-organize-collection-model.c \
......
/*
* Photos - access, organize and share your photos on GNOME
* Copyright © 2016 Red Hat, Inc.
*
* 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 <babl/babl.h>
#include <gegl.h>
#include <gegl-plugin.h>
#include "photos-operation-saturation.h"
struct _PhotosOperationSaturation
{
GeglOperationPointFilter parent_instance;
gfloat scale;
};
struct _PhotosOperationSaturationClass
{
GeglOperationPointFilterClass parent_class;
};
enum
{
PROP_0,
PROP_SCALE
};
G_DEFINE_TYPE (PhotosOperationSaturation, photos_operation_saturation, GEGL_TYPE_OPERATION_POINT_FILTER);
static gboolean
photos_operation_saturation_process (GeglOperation *operation,
void *in_buf,
void *out_buf,
glong n_pixels,
const GeglRectangle *roi,
gint level)
{
PhotosOperationSaturation *self = PHOTOS_OPERATION_SATURATION (operation);
gfloat *in = in_buf;
gfloat *out = out_buf;
glong i;
for (i = 0; i < n_pixels; i++)
{
out[0] = in[0];
out[1] = in[1] * self->scale;
out[2] = in[2];
in += 3;
out += 3;
}
return TRUE;
}
static gboolean
photos_operation_saturation_process_alpha (GeglOperation *operation,
void *in_buf,
void *out_buf,
glong n_pixels,
const GeglRectangle *roi,
gint level)
{
PhotosOperationSaturation *self = PHOTOS_OPERATION_SATURATION (operation);
gfloat *in = in_buf;
gfloat *out = out_buf;
glong i;
for (i = 0; i < n_pixels; i++)
{
out[0] = in[0];
out[1] = in[1] * self->scale;
out[2] = in[2];
out[3] = in[3];
in += 4;
out += 4;
}
return TRUE;
}
static void
photos_operation_saturation_prepare (GeglOperation *operation)
{
GeglOperationPointFilterClass *point_filter_class = GEGL_OPERATION_POINT_FILTER_GET_CLASS (operation);
const Babl *format;
const Babl *input_format;
input_format = gegl_operation_get_source_format (operation, "input");
if (input_format == NULL)
return;
if (babl_format_has_alpha (input_format))
{
format = babl_format ("CIE LCH(ab) alpha float");
point_filter_class->process = photos_operation_saturation_process_alpha;
}
else
{
format = babl_format ("CIE LCH(ab) float");
point_filter_class->process = photos_operation_saturation_process;
}
gegl_operation_set_format (operation, "input", format);
gegl_operation_set_format (operation, "output", format);
}
static void
photos_operation_saturation_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
PhotosOperationSaturation *self = PHOTOS_OPERATION_SATURATION (object);
switch (prop_id)
{
case PROP_SCALE:
g_value_set_float (value, self->scale);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
photos_operation_saturation_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
PhotosOperationSaturation *self = PHOTOS_OPERATION_SATURATION (object);
switch (prop_id)
{
case PROP_SCALE:
self->scale = g_value_get_float (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
photos_operation_saturation_init (PhotosOperationSaturation *self)
{
}
static void
photos_operation_saturation_class_init (PhotosOperationSaturationClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (class);
GeglOperationPointFilterClass *point_filter_class = GEGL_OPERATION_POINT_FILTER_CLASS (class);
operation_class->opencl_support = FALSE;
object_class->get_property = photos_operation_saturation_get_property;
object_class->set_property = photos_operation_saturation_set_property;
operation_class->prepare = photos_operation_saturation_prepare;
point_filter_class->process = NULL; /* will be assigned in prepare */
g_object_class_install_property (object_class,
PROP_SCALE,
g_param_spec_float ("scale",
"Scale",
"Strength of effect",
0.0,
2.0,
1.0,
G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
gegl_operation_class_set_keys (operation_class,
"name", "photos:saturation",
"title", "Saturation",
"description", "Changes the saturation",
"categories", "color",
NULL);
}
/*
* Photos - access, organize and share your photos on GNOME
* Copyright © 2016 Red Hat, Inc.
*
* 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.
*/
#ifndef PHOTOS_OPERATION_SATURATION_H
#define PHOTOS_OPERATION_SATURATION_H
#include <glib-object.h>
G_BEGIN_DECLS
#define PHOTOS_TYPE_OPERATION_SATURATION (photos_operation_saturation_get_type ())
#define PHOTOS_OPERATION_SATURATION(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), \
PHOTOS_TYPE_OPERATION_SATURATION, PhotosOperationSaturation))
#define PHOTOS_IS_OPERATION_SATURATION(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
PHOTOS_TYPE_OPERATION_SATURATION))
typedef struct _PhotosOperationSaturation PhotosOperationSaturation;
typedef struct _PhotosOperationSaturationClass PhotosOperationSaturationClass;
GType photos_operation_saturation_get_type (void) G_GNUC_CONST;
G_END_DECLS
#endif /* PHOTOS_OPERATION_SATURATION_H */
......@@ -46,6 +46,7 @@
#include "photos-operation-insta-filter.h"
#include "photos-operation-jpg-guess-sizes.h"
#include "photos-operation-png-guess-sizes.h"
#include "photos-operation-saturation.h"
#include "photos-query.h"
#include "photos-source.h"
#include "photos-tool.h"
......@@ -814,6 +815,7 @@ photos_utils_ensure_builtins (void)
g_type_ensure (PHOTOS_TYPE_OPERATION_INSTA_FILTER);
g_type_ensure (PHOTOS_TYPE_OPERATION_JPG_GUESS_SIZES);
g_type_ensure (PHOTOS_TYPE_OPERATION_PNG_GUESS_SIZES);
g_type_ensure (PHOTOS_TYPE_OPERATION_SATURATION);
g_type_ensure (PHOTOS_TYPE_TOOL_COLORS);
g_type_ensure (PHOTOS_TYPE_TOOL_CROP);
......
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