rgblevels.c File Reference

#include "common/iop_profile.h"
#include "bauhaus/bauhaus.h"
#include "common/colorspaces_inline_conversions.h"
#include "common/rgb_norms.h"
#include "control/control.h"
#include "develop/imageop.h"
#include "develop/imageop_gui.h"
#include "dtgtk/drawingarea.h"
#include "gui/color_picker_proxy.h"
#include "gui/draw.h"
#include "libs/colorpicker.h"

Include dependency graph for rgblevels.c:

Data Structures
struct	dt_iop_rgblevels_params_t
struct	dt_iop_rgblevels_gui_data_t
struct	dt_iop_rgblevels_data_t
struct	dt_iop_rgblevels_global_data_t

Macros
#define	DT_GUI_CURVE_EDITOR_INSET   DT_PIXEL_APPLY_DPI(5)
#define	RGBLEVELS_MIN   0.f
#define	RGBLEVELS_MID   0.5f
#define	RGBLEVELS_MAX   1.f

Typedefs
typedef enum dt_iop_rgblevels_channel_t	dt_iop_rgblevels_channel_t
typedef enum dt_iop_rgblevels_autoscale_t	dt_iop_rgblevels_autoscale_t
typedef struct dt_iop_rgblevels_params_t	dt_iop_rgblevels_params_t
typedef struct dt_iop_rgblevels_gui_data_t	dt_iop_rgblevels_gui_data_t
typedef struct dt_iop_rgblevels_data_t	dt_iop_rgblevels_data_t
typedef struct dt_iop_rgblevels_global_data_t	dt_iop_rgblevels_global_data_t

Enumerations
enum	dt_iop_rgblevels_channel_t {   DT_IOP_RGBLEVELS_R = 0 ,   DT_IOP_RGBLEVELS_G = 1 ,   DT_IOP_RGBLEVELS_B = 2 ,   DT_IOP_RGBLEVELS_MAX_CHANNELS = 3 }
enum	dt_iop_rgblevels_autoscale_t {   DT_IOP_RGBLEVELS_LINKED_CHANNELS = 0 ,   DT_IOP_RGBLEVELS_INDEPENDENT_CHANNELS = 1 }

Functions
const char *	name ()
int	default_group ()
int	flags ()
int	default_colorspace (dt_iop_module_t *self, dt_dev_pixelpipe_t *pipe, dt_dev_pixelpipe_iop_t *piece)
const char **	description (struct dt_iop_module_t *self)
static void	_turn_select_region_off (struct dt_iop_module_t *self)
static void	_turn_selregion_picker_off (struct dt_iop_module_t *self)
static void	_develop_ui_pipe_finished_callback (gpointer instance, dt_iop_module_t *self)
static void	_compute_lut (dt_dev_pixelpipe_iop_t *piece)
static void	_rgblevels_show_hide_controls (dt_iop_rgblevels_params_t *p, dt_iop_rgblevels_gui_data_t *g)
int	mouse_moved (struct dt_iop_module_t *self, double x, double y, double pressure, int which)
int	button_released (struct dt_iop_module_t *self, double x, double y, int which, uint32_t state)
int	button_pressed (struct dt_iop_module_t *self, double x, double y, double pressure, int which, int type, uint32_t state)
void	gui_post_expose (struct dt_iop_module_t *self, cairo_t *cr, int32_t width, int32_t height, int32_t pointerx, int32_t pointery)
static gboolean	_area_leave_notify_callback (GtkWidget *widget, GdkEventCrossing *event, dt_iop_module_t *self)
static gboolean	_area_draw_callback (GtkWidget *widget, cairo_t *crf, dt_iop_module_t *self)
static void	_rgblevels_move_handle (dt_iop_module_t *self, const int handle_move, const float new_pos, float *levels, const float drag_start_percentage)
static gboolean	_area_motion_notify_callback (GtkWidget *widget, GdkEventMotion *event, dt_iop_module_t *self)
static gboolean	_area_button_press_callback (GtkWidget *widget, GdkEventButton *event, dt_iop_module_t *self)
static gboolean	_area_button_release_callback (GtkWidget *widget, GdkEventButton *event, dt_iop_module_t *self)
static gboolean	_area_scroll_callback (GtkWidget *widget, GdkEventScroll *event, dt_iop_module_t *self)
static void	_auto_levels_callback (GtkButton *button, dt_iop_module_t *self)
static void	_select_region_toggled_callback (GtkToggleButton *togglebutton, dt_iop_module_t *self)
void	gui_changed (dt_iop_module_t *self, GtkWidget *w, void *previous)
static void	_tab_switch_callback (GtkNotebook *notebook, GtkWidget *page, guint page_num, dt_iop_module_t *self)
static void	_color_picker_callback (GtkWidget *button, dt_iop_module_t *self)
void	color_picker_apply (dt_iop_module_t *self, GtkWidget *picker, dt_dev_pixelpipe_iop_t *piece)
void	commit_params (dt_iop_module_t *self, dt_iop_params_t *p1, dt_dev_pixelpipe_t *pipe, dt_dev_pixelpipe_iop_t *piece)
void	init_pipe (dt_iop_module_t *self, dt_dev_pixelpipe_t *pipe, dt_dev_pixelpipe_iop_t *piece)
void	cleanup_pipe (dt_iop_module_t *self, dt_dev_pixelpipe_t *pipe, dt_dev_pixelpipe_iop_t *piece)
void	gui_update (dt_iop_module_t *self)
void	gui_focus (struct dt_iop_module_t *self, gboolean in)
void	gui_reset (struct dt_iop_module_t *self)
void	init (dt_iop_module_t *self)
void	init_global (dt_iop_module_so_t *self)
void	cleanup_global (dt_iop_module_so_t *self)
void	change_image (struct dt_iop_module_t *self)
void	gui_init (dt_iop_module_t *self)
void	gui_cleanup (dt_iop_module_t *self)
static void	_get_selected_area (struct dt_iop_module_t *self, dt_dev_pixelpipe_iop_t *piece, dt_iop_rgblevels_gui_data_t *g, const dt_iop_roi_t *const roi_in, int *box_out)
static void	_auto_levels (const float *const img, const int width, const int height, int *box_area, dt_iop_rgblevels_params_t *p, const int _channel, const dt_iop_order_iccprofile_info_t *const work_profile)
void	process (dt_iop_module_t *self, dt_dev_pixelpipe_iop_t *piece, const void *const ivoid, void *const ovoid, const dt_iop_roi_t *const roi_in, const dt_iop_roi_t *const roi_out)

Macro Definition Documentation

DT_GUI_CURVE_EDITOR_INSET

#define DT_GUI_CURVE_EDITOR_INSET   DT_PIXEL_APPLY_DPI(5)

RGBLEVELS_MAX

#define RGBLEVELS_MAX   1.f

RGBLEVELS_MID

#define RGBLEVELS_MID   0.5f

RGBLEVELS_MIN

#define RGBLEVELS_MIN   0.f

Typedef Documentation

dt_iop_rgblevels_autoscale_t

typedef enum dt_iop_rgblevels_autoscale_t dt_iop_rgblevels_autoscale_t

dt_iop_rgblevels_channel_t

typedef enum dt_iop_rgblevels_channel_t dt_iop_rgblevels_channel_t

dt_iop_rgblevels_data_t

typedef struct dt_iop_rgblevels_data_t dt_iop_rgblevels_data_t

dt_iop_rgblevels_global_data_t

typedef struct dt_iop_rgblevels_global_data_t dt_iop_rgblevels_global_data_t

dt_iop_rgblevels_gui_data_t

typedef struct dt_iop_rgblevels_gui_data_t dt_iop_rgblevels_gui_data_t

dt_iop_rgblevels_params_t

typedef struct dt_iop_rgblevels_params_t dt_iop_rgblevels_params_t

Enumeration Type Documentation

dt_iop_rgblevels_autoscale_t

enum dt_iop_rgblevels_autoscale_t

Enumerator
DT_IOP_RGBLEVELS_LINKED_CHANNELS
DT_IOP_RGBLEVELS_INDEPENDENT_CHANNELS

dt_iop_rgblevels_channel_t

enum dt_iop_rgblevels_channel_t

Enumerator
DT_IOP_RGBLEVELS_R
DT_IOP_RGBLEVELS_G
DT_IOP_RGBLEVELS_B
DT_IOP_RGBLEVELS_MAX_CHANNELS

Function Documentation

_area_button_press_callback()

static gboolean _area_button_press_callback ( GtkWidget *  widget, GdkEventButton *  event, dt_iop_module_t *  self  )

static

References _turn_selregion_picker_off(), darktable, dt_iop_module_t::default_params, darktable_t::develop, dt_dev_add_history_item, dt_iop_request_focus(), FALSE, dt_iop_module_t::gui_data, dt_develop_t::gui_module, dt_iop_rgblevels_params_t::levels, dt_iop_module_t::params, TRUE, and dt_iop_module_t::widget.

Referenced by gui_init().

_area_button_release_callback()

static gboolean _area_button_release_callback ( GtkWidget *  widget, GdkEventButton *  event, dt_iop_module_t *  self  )

static

References FALSE, dt_iop_module_t::gui_data, and TRUE.

Referenced by gui_init().

_area_draw_callback()

static gboolean _area_draw_callback ( GtkWidget *  widget, cairo_t *  crf, dt_iop_module_t *  self  )

static

References darktable_t::bauhaus, darktable, dt_cairo_image_surface_create(), dt_draw_histogram_8(), dt_draw_vertical_lines(), DT_GUI_CURVE_EDITOR_INSET, DT_IOP_RGBLEVELS_B, DT_IOP_RGBLEVELS_G, DT_IOP_RGBLEVELS_INDEPENDENT_CHANNELS, DT_IOP_RGBLEVELS_LINKED_CHANNELS, DT_IOP_RGBLEVELS_MAX_CHANNELS, DT_IOP_RGBLEVELS_R, DT_PIXEL_APPLY_DPI, dt_iop_module_t::enabled, FALSE, dt_bauhaus_t::graph_colors, dt_iop_module_t::gui_data, height, dt_iop_module_t::histogram, dt_iop_module_t::histogram_max, dt_iop_module_t::params, set_color(), TRUE, and width.

Referenced by gui_init().

_area_leave_notify_callback()

static gboolean _area_leave_notify_callback ( GtkWidget *  widget, GdkEventCrossing *  event, dt_iop_module_t *  self  )

static

References dt_iop_module_t::gui_data, and TRUE.

Referenced by gui_init().

_area_motion_notify_callback()

static gboolean _area_motion_notify_callback ( GtkWidget *  widget, GdkEventMotion *  event, dt_iop_module_t *  self  )

static

References _rgblevels_move_handle(), dist(), DT_GUI_CURVE_EDITOR_INSET, dt_iop_module_t::gui_data, height, dt_iop_module_t::params, TRUE, and width.

Referenced by gui_init().

_area_scroll_callback()

static gboolean _area_scroll_callback ( GtkWidget *  widget, GdkEventScroll *  event, dt_iop_module_t *  self  )

static

References _rgblevels_move_handle(), _turn_selregion_picker_off(), darktable, darktable_t::develop, dt_conf_get_int(), dt_conf_set_int(), dt_gui_get_scroll_unit_deltas(), dt_iop_request_focus(), dt_modifier_is(), dtgtk_drawing_area_set_aspect_ratio(), FALSE, dt_iop_module_t::gui_data, dt_develop_t::gui_module, dt_iop_module_t::params, and TRUE.

Referenced by gui_init().

_auto_levels()

static void _auto_levels ( const float *const  img, const int  width, const int  height, int *  box_area, dt_iop_rgblevels_params_t *  p, const int  _channel, const dt_iop_order_iccprofile_info_t *const  work_profile  )

static

References DT_IOP_RGBLEVELS_INDEPENDENT_CHANNELS, dt_rgb_norm(), DT_RGB_NORM_NONE, height, and width.

Referenced by process().

_auto_levels_callback()

static void _auto_levels_callback ( GtkButton *  button, dt_iop_module_t *  self  )

static

References _turn_selregion_picker_off(), darktable, dt_iop_module_t::dev, darktable_t::develop, dt_dev_add_history_item, dt_dev_invalidate_all, dt_dev_refresh_ui_images, dt_iop_gui_enter_critical_section(), dt_iop_gui_leave_critical_section(), dt_iop_request_focus(), darktable_t::gui, dt_iop_module_t::gui_data, dt_iop_module_t::off, dt_gui_gtk_t::reset, and TRUE.

Referenced by gui_init().

_color_picker_callback()

static void _color_picker_callback ( GtkWidget *  button, dt_iop_module_t *  self  )

static

References _turn_select_region_off().

Referenced by gui_init().

_compute_lut()

static void _compute_lut ( dt_dev_pixelpipe_iop_t *  piece )

static

References dt_iop_rgblevels_params_t::autoscale, dt_dev_pixelpipe_iop_t::data, DT_IOP_RGBLEVELS_LINKED_CHANNELS, dt_iop_rgblevels_data_t::inv_gamma, dt_iop_rgblevels_params_t::levels, dt_iop_rgblevels_data_t::lut, and dt_iop_rgblevels_data_t::params.

Referenced by commit_params().

_develop_ui_pipe_finished_callback()

static void _develop_ui_pipe_finished_callback ( gpointer  instance, dt_iop_module_t *  self  )

static

Todo:

: this doesn't seems the right place to update params and GUI ...

References darktable, darktable_t::develop, dt_dev_add_history_item, dt_iop_gui_enter_critical_section(), dt_iop_gui_leave_critical_section(), darktable_t::gui, dt_iop_module_t::gui_data, gui_update(), dt_iop_module_t::params, dt_gui_gtk_t::reset, and TRUE.

Referenced by gui_cleanup(), and gui_init().

_get_selected_area()

static void _get_selected_area ( struct dt_iop_module_t *  self, dt_dev_pixelpipe_iop_t *  piece, dt_iop_rgblevels_gui_data_t *  g, const dt_iop_roi_t *const  roi_in, int *  box_out  )

static

References dt_iop_module_t::dev, DT_ALIGNED_ARRAY, dt_dev_distort_transform_plus(), DT_DEV_TRANSFORM_DIR_BACK_INCL, height, dt_iop_roi_t::height, dt_iop_module_t::iop_order, MAX, MIN, dt_dev_pixelpipe_iop_t::pipe, dt_iop_roi_t::scale, width, dt_iop_roi_t::width, dt_iop_roi_t::x, and dt_iop_roi_t::y.

Referenced by process().

_rgblevels_move_handle()

static void _rgblevels_move_handle ( dt_iop_module_t *  self, const int  handle_move, const float  new_pos, float *  levels, const float  drag_start_percentage  )

static

References darktable, darktable_t::develop, dt_dev_add_history_item, dt_iop_module_t::gui_data, levels(), and TRUE.

Referenced by _area_motion_notify_callback(), and _area_scroll_callback().

_rgblevels_show_hide_controls()

static void _rgblevels_show_hide_controls ( dt_iop_rgblevels_params_t *  p, dt_iop_rgblevels_gui_data_t *  g  )

static

References DT_IOP_RGBLEVELS_INDEPENDENT_CHANNELS, DT_IOP_RGBLEVELS_LINKED_CHANNELS, FALSE, and TRUE.

Referenced by gui_changed(), and gui_update().

_select_region_toggled_callback()

static void _select_region_toggled_callback ( GtkToggleButton *  togglebutton, dt_iop_module_t *  self  )

static

References darktable, darktable_t::develop, dt_dev_add_history_item, dt_iop_color_picker_reset(), dt_iop_gui_enter_critical_section(), dt_iop_gui_leave_critical_section(), dt_iop_request_focus(), darktable_t::gui, dt_iop_module_t::gui_data, dt_iop_module_t::off, dt_gui_gtk_t::reset, and TRUE.

Referenced by gui_init().

_tab_switch_callback()

static void _tab_switch_callback ( GtkNotebook *  notebook, GtkWidget *  page, guint  page_num, dt_iop_module_t *  self  )

static

References darktable, darktable_t::gui, dt_iop_module_t::gui_data, dt_gui_gtk_t::reset, and dt_iop_module_t::widget.

Referenced by gui_init().

_turn_select_region_off()

static void _turn_select_region_off ( struct dt_iop_module_t *  self )

static

References dt_iop_module_t::gui_data.

Referenced by _color_picker_callback(), _turn_selregion_picker_off(), and gui_focus().

_turn_selregion_picker_off()

static void _turn_selregion_picker_off ( struct dt_iop_module_t *  self )

static

References _turn_select_region_off(), dt_iop_color_picker_reset(), and TRUE.

Referenced by _area_button_press_callback(), _area_scroll_callback(), _auto_levels_callback(), button_pressed(), gui_changed(), and gui_reset().

button_pressed()

int button_pressed	(	struct dt_iop_module_t *	self,
		double	x,
		double	y,
		double	pressure,
		int	which,
		int	type,
		uint32_t	state
	)

References _turn_selregion_picker_off(), dt_dev_pixelpipe_t::backbuf_height, dt_dev_pixelpipe_t::backbuf_width, darktable, darktable_t::develop, dt_dev_get_pointer_zoom_pos(), dt_iop_module_t::enabled, dt_iop_module_t::gui_data, dt_develop_t::preview_pipe, and type.

button_released()

int button_released	(	struct dt_iop_module_t *	self,
		double	x,
		double	y,
		int	which,
		uint32_t	state
	)

References darktable, dt_iop_module_t::dev, darktable_t::develop, dt_dev_distort_backtransform(), dt_dev_invalidate_all, dt_dev_refresh_ui_images, dt_iop_module_t::enabled, dt_iop_module_t::gui_data, dt_dev_pixelpipe_t::iheight, dt_dev_pixelpipe_t::iwidth, and dt_develop_t::preview_pipe.

change_image()

void change_image

(

struct dt_iop_module_t *

self

)

References DT_IOP_RGBLEVELS_R, and dt_iop_module_t::gui_data.

Referenced by gui_init().

cleanup_global()

void cleanup_global

(

dt_iop_module_so_t *

self

)

References dt_iop_module_so_t::data, dt_opencl_free_kernel(), and dt_iop_rgblevels_global_data_t::kernel_levels.

cleanup_pipe()

void cleanup_pipe	(	dt_iop_module_t *	self,
		dt_dev_pixelpipe_t *	pipe,
		dt_dev_pixelpipe_iop_t *	piece
	)

References dt_dev_pixelpipe_iop_t::data.

color_picker_apply()

void color_picker_apply	(	dt_iop_module_t *	self,
		GtkWidget *	picker,
		dt_dev_pixelpipe_iop_t *	piece
	)

References darktable, darktable_t::develop, dt_dev_add_history_item, dt_iop_module_t::gui_data, levels(), dt_iop_module_t::params, dt_iop_module_t::picked_color, and TRUE.

commit_params()

void commit_params	(	dt_iop_module_t *	self,
		dt_iop_params_t *	p1,
		dt_dev_pixelpipe_t *	pipe,
		dt_dev_pixelpipe_iop_t *	piece
	)

References _compute_lut(), dt_iop_rgblevels_params_t::autoscale, dt_dev_pixelpipe_iop_t::data, DT_DEV_PIXELPIPE_PREVIEW, DT_IOP_RGBLEVELS_LINKED_CHANNELS, DT_IOP_RGBLEVELS_MAX_CHANNELS, DT_REQUEST_ON, dt_iop_rgblevels_params_t::levels, dt_iop_rgblevels_data_t::params, dt_dev_pixelpipe_iop_t::request_histogram, and dt_dev_pixelpipe_t::type.

default_colorspace()

int default_colorspace	(	dt_iop_module_t *	self,
		dt_dev_pixelpipe_t *	pipe,
		dt_dev_pixelpipe_iop_t *	piece
	)

References IOP_CS_RGB.

default_group()

int default_group

(

)

References IOP_GROUP_COLOR.

description()

const char ** description

(

struct dt_iop_module_t *

self

)

References dt_iop_set_description().

flags()

int flags

(

)

References IOP_FLAGS_DEPRECATED, and IOP_FLAGS_SUPPORTS_BLENDING.

gui_changed()

void gui_changed	(	dt_iop_module_t *	self,
		GtkWidget *	w,
		void *	previous
	)

References _rgblevels_show_hide_controls(), _turn_selregion_picker_off(), DT_IOP_RGBLEVELS_R, dt_iop_module_t::gui_data, and dt_iop_module_t::params.

gui_cleanup()

void gui_cleanup

(

dt_iop_module_t *

self

)

References _develop_ui_pipe_finished_callback(), darktable, DT_DEBUG_CONTROL_SIGNAL_DISCONNECT, IOP_GUI_FREE, and darktable_t::signals.

gui_focus()

void gui_focus	(	struct dt_iop_module_t *	self,
		gboolean	in
	)

References _turn_select_region_off().

gui_init()

void gui_init

(

dt_iop_module_t *

self

)

References _area_button_press_callback(), _area_button_release_callback(), _area_draw_callback(), _area_leave_notify_callback(), _area_motion_notify_callback(), _area_scroll_callback(), _auto_levels_callback(), _color_picker_callback(), _develop_ui_pipe_finished_callback(), _select_region_toggled_callback(), _tab_switch_callback(), change_image(), darktable, dt_bauhaus_combobox_from_params(), dt_color_picker_new(), DT_COLOR_PICKER_POINT, dt_conf_get_int(), DT_DEBUG_CONTROL_SIGNAL_CONNECT, dt_gui_add_class(), DT_PIXEL_APPLY_DPI, DT_SIGNAL_DEVELOP_PREVIEW_PIPE_FINISHED, dt_ui_notebook_page(), dtgtk_cairo_paint_colorpicker(), dtgtk_drawing_area_new_with_aspect_ratio(), dtgtk_togglebutton_new(), FALSE, darktable_t::gui, IOP_GUI_ALLOC, dt_gui_gtk_t::scroll_mask, darktable_t::signals, TRUE, and dt_iop_module_t::widget.

gui_post_expose()

void gui_post_expose	(	struct dt_iop_module_t *	self,
		cairo_t *	cr,
		int32_t	width,
		int32_t	height,
		int32_t	pointerx,
		int32_t	pointery
	)

References dt_dev_pixelpipe_t::backbuf_height, dt_dev_pixelpipe_t::backbuf_width, darktable, darktable_t::develop, dt_control_get_dev_closeup(), dt_control_get_dev_zoom(), dt_control_get_dev_zoom_x(), dt_control_get_dev_zoom_y(), dt_dev_get_zoom_scale(), dt_iop_module_t::enabled, dt_iop_module_t::gui_data, height, dt_develop_t::preview_pipe, and width.

gui_reset()

void gui_reset

(

struct dt_iop_module_t *

self

)

References _turn_selregion_picker_off(), DT_IOP_RGBLEVELS_R, dt_iop_module_t::gui_data, and dt_iop_module_t::widget.

gui_update()

void gui_update

(

dt_iop_module_t *

self

)

References _rgblevels_show_hide_controls(), dt_bauhaus_combobox_set(), dt_iop_module_t::gui_data, dt_iop_module_t::params, and dt_iop_module_t::widget.

Referenced by _develop_ui_pipe_finished_callback().

init()

void init

(

dt_iop_module_t *

self

)

References dt_iop_module_t::default_params, dt_iop_default_init(), DT_IOP_RGBLEVELS_MAX_CHANNELS, DT_REQUEST_ON, dt_iop_rgblevels_params_t::levels, dt_iop_module_t::request_histogram, RGBLEVELS_MAX, RGBLEVELS_MID, and RGBLEVELS_MIN.

init_global()

void init_global

(

dt_iop_module_so_t *

self

)

References dt_iop_module_so_t::data, dt_opencl_create_kernel(), and dt_iop_rgblevels_global_data_t::kernel_levels.

init_pipe()

void init_pipe	(	dt_iop_module_t *	self,
		dt_dev_pixelpipe_t *	pipe,
		dt_dev_pixelpipe_iop_t *	piece
	)

References dt_dev_pixelpipe_iop_t::data, and dt_dev_pixelpipe_iop_t::data_size.

mouse_moved()

int mouse_moved	(	struct dt_iop_module_t *	self,
		double	x,
		double	y,
		double	pressure,
		int	which
	)

References dt_dev_pixelpipe_t::backbuf_height, dt_dev_pixelpipe_t::backbuf_width, darktable, darktable_t::develop, dt_control_queue_redraw_center(), dt_dev_get_pointer_zoom_pos(), dt_iop_module_t::enabled, dt_iop_module_t::gui_data, and dt_develop_t::preview_pipe.

name()

const char * name

(

)

process()

void process	(	dt_iop_module_t *	self,
		dt_dev_pixelpipe_iop_t *	piece,
		const void *const	ivoid,
		void *const	ovoid,
		const dt_iop_roi_t *const	roi_in,
		const dt_iop_roi_t *const	roi_out
	)

References _auto_levels(), _get_selected_area(), dt_iop_rgblevels_params_t::autoscale, dt_dev_pixelpipe_iop_t::colors, darktable, dt_dev_pixelpipe_iop_t::data, DT_DEV_PIXELPIPE_PREVIEW, dt_iop_gui_enter_critical_section(), dt_iop_gui_leave_critical_section(), dt_iop_have_required_input_format(), DT_IOP_RGBLEVELS_INDEPENDENT_CHANNELS, dt_ioppr_get_pipe_work_profile_info(), dt_rgb_norm(), DT_RGB_NORM_NONE, for_each_channel, darktable_t::gui, dt_iop_module_t::gui_data, dt_iop_roi_t::height, dt_iop_rgblevels_data_t::inv_gamma, levels(), dt_iop_rgblevels_params_t::levels, dt_iop_rgblevels_data_t::lut, dt_iop_rgblevels_data_t::params, dt_dev_pixelpipe_iop_t::pipe, dt_iop_rgblevels_params_t::preserve_colors, dt_gui_gtk_t::reset, and dt_iop_roi_t::width.