165 lines
6.6 KiB
C
165 lines
6.6 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* gimpoperationlchlightness.c
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* Copyright (C) 2015 Elle Stone <ellestone@ninedegreesbelow.com>
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* Massimo Valentini <mvalentini@src.gnome.org>
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* Thomas Manni <thomas.manni@free.fr>
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* 2017 Øyvind Kolås <pippin@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 <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl-plugin.h>
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#include "../operations-types.h"
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#include "gimpoperationlchlightness.h"
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static gboolean gimp_operation_lch_lightness_process (GeglOperation *operation,
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void *in_buf,
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void *aux_buf,
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void *aux2_buf,
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void *out_buf,
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glong samples,
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const GeglRectangle *roi,
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gint level);
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G_DEFINE_TYPE (GimpOperationLchLightness, gimp_operation_lch_lightness,
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GIMP_TYPE_OPERATION_POINT_LAYER_MODE)
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#define parent_class gimp_operation_lch_lightness_parent_class
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static void
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gimp_operation_lch_lightness_class_init (GimpOperationLchLightnessClass *klass)
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{
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GeglOperationClass *operation_class;
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GeglOperationPointComposer3Class *point_class;
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operation_class = GEGL_OPERATION_CLASS (klass);
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point_class = GEGL_OPERATION_POINT_COMPOSER3_CLASS (klass);
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operation_class->want_in_place = FALSE;
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gegl_operation_class_set_keys (operation_class,
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"name", "gimp:lch-lightness",
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"description", "GIMP LCH lightness mode operation",
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NULL);
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point_class->process = gimp_operation_lch_lightness_process;
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}
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static void
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gimp_operation_lch_lightness_init (GimpOperationLchLightness *self)
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{
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}
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static gboolean
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gimp_operation_lch_lightness_process (GeglOperation *operation,
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void *in_buf,
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void *aux_buf,
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void *aux2_buf,
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void *out_buf,
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glong samples,
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const GeglRectangle *roi,
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gint level)
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{
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GimpOperationPointLayerMode *gimp_op = GIMP_OPERATION_POINT_LAYER_MODE (operation);
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gfloat opacity = gimp_op->opacity;
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gboolean linear = gimp_op->linear;
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return (linear ? gimp_operation_lch_lightness_process_pixels_linear :
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gimp_operation_lch_lightness_process_pixels)
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(in_buf, aux_buf, aux2_buf, out_buf, opacity, samples, roi, level);
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}
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static void
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lightness_pre_process (const Babl *from_fish_la,
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const Babl *from_fish_laba,
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const Babl *to_fish,
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const gfloat *in,
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const gfloat *layer,
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gfloat *out,
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glong samples)
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{
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gfloat lightness_alpha[samples * 2];
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gint i;
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babl_process (from_fish_laba, in, out, samples);
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babl_process (from_fish_la, layer, lightness_alpha, samples);
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for (i = 0; i < samples; ++i)
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out[4 * i] = lightness_alpha[2 * i];
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babl_process (to_fish, out, out, samples);
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}
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gboolean
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gimp_operation_lch_lightness_process_pixels_linear (gfloat *in,
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gfloat *layer,
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gfloat *mask,
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gfloat *out,
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gfloat opacity,
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glong samples,
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const GeglRectangle *roi,
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gint level)
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{
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static const Babl *from_fish_laba = NULL;
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static const Babl *from_fish_la = NULL;
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static const Babl *to_fish = NULL;
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if (!from_fish_laba)
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from_fish_laba = babl_fish ("RGBA float", "CIE Lab alpha float");
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if (!from_fish_la)
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from_fish_la = babl_fish ("RGBA float", "CIE L alpha float");
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if (!to_fish)
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to_fish = babl_fish ("CIE Lab alpha float", "RGBA float");
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lightness_pre_process (from_fish_la, from_fish_laba, to_fish, in, layer, out, samples);
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gimp_operation_layer_composite (in, layer, mask, out, opacity, samples);
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return TRUE;
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}
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gboolean
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gimp_operation_lch_lightness_process_pixels (gfloat *in,
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gfloat *layer,
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gfloat *mask,
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gfloat *out,
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gfloat opacity,
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glong samples,
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const GeglRectangle *roi,
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gint level)
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{
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static const Babl *from_fish_laba = NULL;
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static const Babl *from_fish_la = NULL;
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static const Babl *to_fish = NULL;
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if (!from_fish_laba)
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from_fish_laba = babl_fish ("R'G'B'A float", "CIE Lab alpha float");
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if (!from_fish_la)
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from_fish_la = babl_fish ("R'G'B'A float", "CIE L alpha float");
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if (!to_fish)
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to_fish = babl_fish ("CIE Lab alpha float", "R'G'B'A float");
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lightness_pre_process (from_fish_la, from_fish_laba, to_fish, in, layer, out, samples);
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gimp_operation_layer_composite (in, layer, mask, out, opacity, samples);
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return TRUE;
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}
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