blend.h

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/*
    This file is part of darktable,
    Copyright (C) 2011 Henrik Andersson.
    Copyright (C) 2011-2012 johannes hanika.
    Copyright (C) 2011-2013, 2016-2017, 2019 Ulrich Pegelow.
    Copyright (C) 2012 Richard Wonka.
    Copyright (C) 2013 Aldric Renaudin.
    Copyright (C) 2013-2014, 2016, 2018-2019 Tobias Ellinghaus.
    Copyright (C) 2014, 2016 Roman Lebedev.
    Copyright (C) 2017-2018, 2020 Heiko Bauke.
    Copyright (C) 2017 luzpaz.
    Copyright (C) 2019 Edgardo Hoszowski.
    Copyright (C) 2019 Florian Wernert.
    Copyright (C) 2020 Diederik Ter Rahe.
    Copyright (C) 2020-2021 Harold le Clément de Saint-Marcq.
    Copyright (C) 2020-2021 Pascal Obry.
    Copyright (C) 2021 Chris Elston.
    Copyright (C) 2021 Hanno Schwalm.
    Copyright (C) 2022 Martin Bařinka.
    Copyright (C) 2023, 2025 Aurélien PIERRE.
    Copyright (C) 2025 Alynx Zhou.
    
    darktable 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.
    
    darktable 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 darktable.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#pragma once
 
#include "common/iop_profile.h"
#include "common/opencl.h"
#include "develop/pixelpipe.h"
#include "dtgtk/button.h"
#include "dtgtk/gradientslider.h"
#include "gui/color_picker_proxy.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define DEVELOP_BLEND_VERSION (11)
 
typedef enum dt_develop_blend_colorspace_t
{
  DEVELOP_BLEND_CS_NONE = 0,
  DEVELOP_BLEND_CS_RAW = 1,
  DEVELOP_BLEND_CS_LAB = 2,
  DEVELOP_BLEND_CS_RGB_DISPLAY = 3,
  DEVELOP_BLEND_CS_RGB_SCENE = 4,
} dt_develop_blend_colorspace_t;
 
typedef enum dt_develop_blend_mode_t
{
  DEVELOP_BLEND_DISABLED_OBSOLETE = 0x00, /* same as the new normal */
  DEVELOP_BLEND_NORMAL_OBSOLETE = 0x01, /* obsolete as it did clamping */
  DEVELOP_BLEND_LIGHTEN = 0x02,
  DEVELOP_BLEND_DARKEN = 0x03,
  DEVELOP_BLEND_MULTIPLY = 0x04,
  DEVELOP_BLEND_AVERAGE = 0x05,
  DEVELOP_BLEND_ADD = 0x06,
  DEVELOP_BLEND_SUBTRACT = 0x07,
  DEVELOP_BLEND_DIFFERENCE = 0x08, /* deprecated */
  DEVELOP_BLEND_SCREEN = 0x09,
  DEVELOP_BLEND_OVERLAY = 0x0A,
  DEVELOP_BLEND_SOFTLIGHT = 0x0B,
  DEVELOP_BLEND_HARDLIGHT = 0x0C,
  DEVELOP_BLEND_VIVIDLIGHT = 0x0D,
  DEVELOP_BLEND_LINEARLIGHT = 0x0E,
  DEVELOP_BLEND_PINLIGHT = 0x0F,
  DEVELOP_BLEND_LIGHTNESS = 0x10,
  DEVELOP_BLEND_CHROMATICITY = 0x11,
  DEVELOP_BLEND_HUE = 0x12,
  DEVELOP_BLEND_COLOR = 0x13,
  DEVELOP_BLEND_INVERSE_OBSOLETE = 0x14, /* obsolete */
  DEVELOP_BLEND_UNBOUNDED_OBSOLETE = 0x15, /* obsolete as new normal takes over */
  DEVELOP_BLEND_COLORADJUST = 0x16,
  DEVELOP_BLEND_DIFFERENCE2 = 0x17,
  DEVELOP_BLEND_NORMAL2 = 0x18,
  DEVELOP_BLEND_BOUNDED = 0x19,
  DEVELOP_BLEND_LAB_LIGHTNESS = 0x1A,
  DEVELOP_BLEND_LAB_COLOR = 0x1B,
  DEVELOP_BLEND_HSV_VALUE = 0x1C,
  DEVELOP_BLEND_HSV_COLOR = 0x1D,
  DEVELOP_BLEND_LAB_L = 0x1E,
  DEVELOP_BLEND_LAB_A = 0x1F,
  DEVELOP_BLEND_LAB_B = 0x20,
  DEVELOP_BLEND_RGB_R = 0x21,
  DEVELOP_BLEND_RGB_G = 0x22,
  DEVELOP_BLEND_RGB_B = 0x23,
  DEVELOP_BLEND_MULTIPLY_REVERSE_OBSOLETE = 0x24, /* obsoleted by MULTIPLY + REVERSE */
  DEVELOP_BLEND_SUBTRACT_INVERSE = 0x25,
  DEVELOP_BLEND_DIVIDE = 0x26,
  DEVELOP_BLEND_DIVIDE_INVERSE = 0x27,
  DEVELOP_BLEND_GEOMETRIC_MEAN = 0x28,
  DEVELOP_BLEND_HARMONIC_MEAN = 0x29,
 
  DEVELOP_BLEND_REVERSE = 0x80000000,
  DEVELOP_BLEND_MODE_MASK = 0xFF,
} dt_develop_blend_mode_t;
 
typedef enum dt_develop_mask_mode_t
{
  DEVELOP_MASK_DISABLED = 0,                                                         // off
  DEVELOP_MASK_ENABLED = 1,                                                          // uniformly
  DEVELOP_MASK_MASK = 1 << 1,                                                        // drawn mask
  DEVELOP_MASK_CONDITIONAL = 1 << 2,                                                 // parametric mask
  DEVELOP_MASK_RASTER = 1 << 3,                                                      // raster mask
  DEVELOP_MASK_MASK_CONDITIONAL = (DEVELOP_MASK_MASK | DEVELOP_MASK_CONDITIONAL)     // drawn & parametric
} dt_develop_mask_mode_t;
 
typedef enum dt_develop_mask_combine_mode_t
{
  DEVELOP_COMBINE_NORM = 0x00,
  DEVELOP_COMBINE_INV = 0x01,
  DEVELOP_COMBINE_EXCL = 0x00,
  DEVELOP_COMBINE_INCL = 0x02,
  DEVELOP_COMBINE_MASKS_POS = 0x04,
  DEVELOP_COMBINE_NORM_EXCL = (DEVELOP_COMBINE_NORM | DEVELOP_COMBINE_EXCL),
  DEVELOP_COMBINE_NORM_INCL = (DEVELOP_COMBINE_NORM | DEVELOP_COMBINE_INCL),
  DEVELOP_COMBINE_INV_EXCL = (DEVELOP_COMBINE_INV | DEVELOP_COMBINE_EXCL),
  DEVELOP_COMBINE_INV_INCL = (DEVELOP_COMBINE_INV | DEVELOP_COMBINE_INCL)
} dt_develop_mask_combine_mode_t;
 
typedef enum dt_develop_mask_feathering_guide_t
{
  DEVELOP_MASK_GUIDE_IN_BEFORE_BLUR = 0x01,
  DEVELOP_MASK_GUIDE_OUT_BEFORE_BLUR = 0x02,
  DEVELOP_MASK_GUIDE_IN_AFTER_BLUR = 0x05,
  DEVELOP_MASK_GUIDE_OUT_AFTER_BLUR = 0x06,
} dt_develop_mask_feathering_guide_t;
 
typedef enum dt_develop_blendif_channels_t
{
  DEVELOP_BLENDIF_L_in = 0,
  DEVELOP_BLENDIF_A_in = 1,
  DEVELOP_BLENDIF_B_in = 2,
 
  DEVELOP_BLENDIF_L_out = 4,
  DEVELOP_BLENDIF_A_out = 5,
  DEVELOP_BLENDIF_B_out = 6,
 
  DEVELOP_BLENDIF_GRAY_in = 0,
  DEVELOP_BLENDIF_RED_in = 1,
  DEVELOP_BLENDIF_GREEN_in = 2,
  DEVELOP_BLENDIF_BLUE_in = 3,
 
  DEVELOP_BLENDIF_GRAY_out = 4,
  DEVELOP_BLENDIF_RED_out = 5,
  DEVELOP_BLENDIF_GREEN_out = 6,
  DEVELOP_BLENDIF_BLUE_out = 7,
 
  DEVELOP_BLENDIF_C_in = 8,
  DEVELOP_BLENDIF_h_in = 9,
 
  DEVELOP_BLENDIF_C_out = 12,
  DEVELOP_BLENDIF_h_out = 13,
 
  DEVELOP_BLENDIF_H_in = 8,
  DEVELOP_BLENDIF_S_in = 9,
  DEVELOP_BLENDIF_l_in = 10,
 
  DEVELOP_BLENDIF_H_out = 12,
  DEVELOP_BLENDIF_S_out = 13,
  DEVELOP_BLENDIF_l_out = 14,
 
  DEVELOP_BLENDIF_Jz_in = 8,
  DEVELOP_BLENDIF_Cz_in = 9,
  DEVELOP_BLENDIF_hz_in = 10,
 
  DEVELOP_BLENDIF_Jz_out = 12,
  DEVELOP_BLENDIF_Cz_out = 13,
  DEVELOP_BLENDIF_hz_out = 14,
 
  DEVELOP_BLENDIF_MAX = 14,
  DEVELOP_BLENDIF_unused = 15,
 
  DEVELOP_BLENDIF_active = 31,
 
  DEVELOP_BLENDIF_SIZE = 16,
 
  DEVELOP_BLENDIF_Lab_MASK = 0x3377,
  DEVELOP_BLENDIF_RGB_MASK = 0x77FF,
  DEVELOP_BLENDIF_OUTPUT_MASK = 0xF0F0
} dt_develop_blendif_channels_t;
 
 
typedef struct dt_develop_blend_params_t
{
  uint32_t mask_mode;
  int32_t blend_cst;
  uint32_t blend_mode;
  float blend_parameter;
  float opacity;
  uint32_t mask_combine;
  uint32_t mask_id;
  uint32_t blendif;
  float feathering_radius;
  uint32_t feathering_guide;
  float blur_radius;
  float contrast;
  float brightness;
  float details;
  uint32_t reserved[3];
  float blendif_parameters[4 * DEVELOP_BLENDIF_SIZE];
  float blendif_boost_factors[DEVELOP_BLENDIF_SIZE];
  dt_dev_operation_t raster_mask_source;
  int raster_mask_instance;
  int raster_mask_id;
  gboolean raster_mask_invert;
} dt_develop_blend_params_t;
 
 
typedef struct dt_blendop_cl_global_t
{
  int kernel_blendop_mask_Lab;
  int kernel_blendop_mask_RAW;
  int kernel_blendop_mask_rgb_hsl;
  int kernel_blendop_mask_rgb_jzczhz;
  int kernel_blendop_Lab;
  int kernel_blendop_RAW;
  int kernel_blendop_rgb_hsl;
  int kernel_blendop_rgb_jzczhz;
  int kernel_blendop_mask_tone_curve;
  int kernel_blendop_set_mask;
  int kernel_blendop_display_channel;
  int kernel_calc_Y0_mask;
  int kernel_calc_scharr_mask;
  int kernel_write_scharr_mask;
  int kernel_write_mask;
  int kernel_read_mask;
  int kernel_calc_blend;
  int kernel_mask_blur;
} dt_blendop_cl_global_t;
 
 
typedef struct dt_iop_gui_blendif_colorstop_t
{
  float stoppoint;
  GdkRGBA color;
} dt_iop_gui_blendif_colorstop_t;
 
typedef struct dt_iop_gui_blendif_channel_t
{
  char *label;
  char *tooltip;
  float increment;
  int numberstops;
  const dt_iop_gui_blendif_colorstop_t *colorstops;
  gboolean boost_factor_enabled;
  float boost_factor_offset;
  dt_develop_blendif_channels_t param_channels[2];
  dt_dev_pixelpipe_display_mask_t display_channel;
  void (*scale_print)(float value, float boost_factor, char *string, int n);
  int (*altdisplay)(GtkWidget *, dt_iop_module_t *, int);
  char *name;
} dt_iop_gui_blendif_channel_t;
 
typedef struct dt_iop_gui_blendif_filter_t
{
  GtkDarktableGradientSlider *slider;
  GtkLabel *head;
  GtkLabel *label[4];
  GtkLabel *picker_label;
  GtkWidget *polarity;
  GtkBox *box;
} dt_iop_gui_blendif_filter_t;
 
typedef struct dt_iop_blend_name_value_t
{
  char name[32];
  int value;
} dt_develop_name_value_t;
 
extern const dt_develop_name_value_t dt_develop_blend_colorspace_names[];
extern const dt_develop_name_value_t dt_develop_blend_mode_names[];
extern const dt_develop_name_value_t dt_develop_blend_mode_flag_names[];
extern const dt_develop_name_value_t dt_develop_mask_mode_names[];
extern const dt_develop_name_value_t dt_develop_combine_masks_names[];
extern const dt_develop_name_value_t dt_develop_feathering_guide_names[];
extern const dt_develop_name_value_t dt_develop_invert_mask_names[];
 
#define DEVELOP_MASKS_NB_SHAPES 5
 
typedef struct dt_iop_gui_blend_data_t
{
  int blendif_support;
  int blendif_inited;
  int masks_support;
  int masks_inited;
  int raster_inited;
 
  dt_develop_blend_colorspace_t csp;
  dt_iop_module_t *module;
 
  GtkWidget *blending_body_box;
  GtkWidget *blending_notebook;
  GtkWidget *top_enable;
  GtkWidget *masks_enable;
  GtkWidget *raster_enable;
  GtkWidget *blendif_enable;
  GtkWidget *top_content;
  GtkWidget *masks_content;
  GtkWidget *raster_content;
  GtkWidget *blendif_content;
  GtkWidget *bottom_content;
  GtkBox *blendif_box;
  GtkBox *masks_box;
  GtkBox *raster_box;
 
  GtkWidget *colorpicker;
  GtkWidget *colorpicker_set_values;
  dt_iop_gui_blendif_filter_t filter[2];
  GtkWidget *showmask;
  GtkWidget *suppress;
  GtkWidget *masks_combine_combo;
  GtkWidget *blend_modes_combo;
  GtkWidget *blend_modes_blend_order;
  GtkWidget *blend_mode_parameter_slider;
  GtkWidget *masks_invert_combo;
  GtkWidget *opacity_slider;
  GtkWidget *masks_feathering_guide_combo;
  GtkWidget *feathering_radius_slider;
  GtkWidget *blur_radius_slider;
  GtkWidget *contrast_slider;
  GtkWidget *brightness_slider;
 
  dt_develop_blend_colorspace_t blend_modes_csp;
  dt_develop_blend_colorspace_t channel_tabs_csp;
 
  const dt_iop_gui_blendif_channel_t *channel;
  int tab;
  int altmode[8][2];
  dt_dev_pixelpipe_display_mask_t save_for_leave;
  int timeout_handle;
  GtkNotebook *channel_tabs;
  gboolean output_channels_shown;
 
  GtkWidget *channel_boost_factor_slider;
  GtkWidget *details_slider;
 
  GtkWidget *masks_combo;
  GtkWidget *masks_shapes[DEVELOP_MASKS_NB_SHAPES];
  int masks_type[DEVELOP_MASKS_NB_SHAPES];
  GtkWidget *masks_edit;
  GtkWidget *group_shapes_label;
  GtkWidget *masks_polarity;
  GtkWidget *wire_shape_toggle;
  int *masks_combo_ids;
  int masks_shown;
  GtkWidget *masks_treeview;
  GtkWidget *masks_group_treeview;
  GtkTreeStore *group_shapes_store;
  GtkTreeViewColumn *group_shapes_col;
  GtkListStore *all_shapes_store;
  GtkWidget *group_shapes_sw;
  GtkTreeViewColumn *all_shapes_col;
  GtkWidget *all_shapes_sw;
  GtkWidget *lists_stack;
  GdkPixbuf *masks_ic_inverse;
  GdkPixbuf *masks_ic_union;
  GdkPixbuf *masks_ic_intersection;
  GdkPixbuf *masks_ic_difference;
  GdkPixbuf *masks_ic_exclusion;
  GtkWidget *all_shapes_buttons;
  GtkWidget *lists_box;
 
 
  GtkWidget *raster_combo;
  GtkWidget *raster_polarity;
 
  int control_button_pressed;
  dt_pthread_mutex_t lock;
} dt_iop_gui_blend_data_t;
 
 
dt_blendop_cl_global_t *dt_develop_blend_init_cl_global(void);
void dt_develop_blend_free_cl_global(dt_blendop_cl_global_t *b);
 
int dt_develop_blend_process(struct dt_iop_module_t *self, struct dt_dev_pixelpipe_t *pipe,
                             const struct dt_dev_pixelpipe_iop_t *piece, const void *const i, void *const o);
 
int dt_develop_blend_version(void);
 
dt_develop_blend_colorspace_t dt_develop_blend_default_module_blend_colorspace(dt_iop_module_t *module);
 
void dt_develop_blend_init_blend_parameters(dt_develop_blend_params_t *blend_params,
                                            dt_develop_blend_colorspace_t cst);
 
void dt_develop_blend_init_blendif_parameters(dt_develop_blend_params_t *blend_params,
                                              dt_develop_blend_colorspace_t cst);
 
dt_iop_colorspace_type_t dt_develop_blend_colorspace(const dt_dev_pixelpipe_iop_t *const piece,
                                                     dt_iop_colorspace_type_t cst);
 
gboolean dt_develop_blend_params_is_all_zero(const void *params, size_t length);
 
int dt_develop_blend_legacy_params(dt_iop_module_t *module, const void *const old_params,
                                   const int old_version, void *new_params, const int new_version,
                                   const int length);
int dt_develop_blend_legacy_params_from_so(dt_iop_module_so_t *module_so, const void *const old_params,
                                           const int old_version, void *new_params, const int new_version,
                                           const int length);
 
#define DEVELOP_BLENDIF_PARAMETER_ITEMS 6
 
void dt_develop_blendif_process_parameters(float *const parameters, const dt_develop_blend_params_t *const params);
 
int dt_develop_blendif_init_masking_profile(const struct dt_dev_pixelpipe_t *pipe,
                                            const struct dt_dev_pixelpipe_iop_t *piece,
                                            dt_iop_order_iccprofile_info_t *blending_profile,
                                            dt_develop_blend_colorspace_t cst);
 
void dt_develop_blendif_raw_make_mask(const struct dt_dev_pixelpipe_iop_t *piece, const float *const a,
                                      const float *const b, float *const mask);
void dt_develop_blendif_lab_make_mask(const struct dt_dev_pixelpipe_iop_t *piece, const float *const a,
                                      const float *const b, float *const mask);
void dt_develop_blendif_rgb_hsl_make_mask(const struct dt_dev_pixelpipe_t *pipe,
                                          const struct dt_dev_pixelpipe_iop_t *piece,
                                          const float *const a, const float *const b, float *const mask);
void dt_develop_blendif_rgb_jzczhz_make_mask(const struct dt_dev_pixelpipe_t *pipe,
                                             const struct dt_dev_pixelpipe_iop_t *piece,
                                             const float *const a, const float *const b, float *const mask);
 
void dt_develop_blendif_raw_blend(const struct dt_dev_pixelpipe_t *pipe,
                                  const struct dt_dev_pixelpipe_iop_t *piece, const float *const a,
                                  float *const b, const float *const mask,
                                  const dt_dev_pixelpipe_display_mask_t request_mask_display);
void dt_develop_blendif_lab_blend(const struct dt_dev_pixelpipe_t *pipe,
                                  const struct dt_dev_pixelpipe_iop_t *piece, const float *const a,
                                  float *const b, const float *const mask,
                                  const dt_dev_pixelpipe_display_mask_t request_mask_display);
void dt_develop_blendif_rgb_hsl_blend(const struct dt_dev_pixelpipe_t *pipe,
                                      const struct dt_dev_pixelpipe_iop_t *piece, const float *const a,
                                      float *const b, const float *const mask,
                                      const dt_dev_pixelpipe_display_mask_t request_mask_display);
void dt_develop_blendif_rgb_jzczhz_blend(const struct dt_dev_pixelpipe_t *pipe,
                                         const struct dt_dev_pixelpipe_iop_t *piece, const float *const a,
                                         float *const b, const float *const mask,
                                         const dt_dev_pixelpipe_display_mask_t request_mask_display);
 
 
void dt_iop_gui_init_blendif(GtkBox *blendw, dt_iop_module_t *module);
void dt_iop_gui_init_blending(dt_iop_module_t *module);
void dt_iop_gui_init_blending_body(GtkBox *blendw, dt_iop_module_t *module);
void dt_iop_gui_update_blending(dt_iop_module_t *module);
void dt_iop_gui_update_blendif(dt_iop_module_t *module);
void dt_iop_gui_cleanup_blending_body(dt_iop_module_t *module);
void dt_iop_gui_cleanup_blending(dt_iop_module_t *module);
void dt_iop_gui_blending_lose_focus(dt_iop_module_t *module);
void dt_iop_gui_blending_reload_defaults(dt_iop_module_t *module);
 
gboolean blend_color_picker_apply(dt_iop_module_t *module, GtkWidget *picker, dt_dev_pixelpipe_t *pipe,
                                  dt_dev_pixelpipe_iop_t *piece);
 
 
#ifdef HAVE_OPENCL
int dt_develop_blend_process_cl(struct dt_iop_module_t *self, struct dt_dev_pixelpipe_t *pipe,
                                const struct dt_dev_pixelpipe_iop_t *piece, cl_mem dev_in, cl_mem dev_out);
#endif
 
#ifdef __cplusplus
}
#endif
 
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