profile_gamma.c File Reference

#include "bauhaus/bauhaus.h"
#include "common/colorspaces_inline_conversions.h"
#include "common/darktable.h"
#include "common/math.h"
#include "common/opencl.h"
#include "control/control.h"
#include "develop/develop.h"
#include "develop/imageop_math.h"
#include "develop/imageop_gui.h"
#include "dtgtk/button.h"
#include "gui/gtk.h"
#include "gui/presets.h"
#include "gui/color_picker_proxy.h"
#include "iop/iop_api.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>

Include dependency graph for profile_gamma.c:

Data Structures
struct	dt_iop_profilegamma_params_t
struct	dt_iop_profilegamma_gui_data_t
struct	dt_iop_profilegamma_data_t
struct	dt_iop_profilegamma_global_data_t

Typedefs
typedef enum dt_iop_profilegamma_mode_t	dt_iop_profilegamma_mode_t
typedef struct dt_iop_profilegamma_params_t	dt_iop_profilegamma_params_t
typedef struct dt_iop_profilegamma_gui_data_t	dt_iop_profilegamma_gui_data_t
typedef struct dt_iop_profilegamma_data_t	dt_iop_profilegamma_data_t
typedef struct dt_iop_profilegamma_global_data_t	dt_iop_profilegamma_global_data_t

Enumerations
enum	dt_iop_profilegamma_mode_t {   PROFILEGAMMA_LOG = 0 ,   PROFILEGAMMA_GAMMA = 1 }

Functions
const char *	name ()
const char **	description (struct dt_iop_module_t *self)
int	default_group ()
int	flags ()
int	default_colorspace (dt_iop_module_t *self, dt_dev_pixelpipe_t *pipe, dt_dev_pixelpipe_iop_t *piece)
void	init_presets (dt_iop_module_so_t *self)
int	legacy_params (dt_iop_module_t *self, const void *const old_params, const int old_version, void *new_params, const int new_version)
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)
static void	apply_auto_grey (dt_iop_module_t *self)
static void	apply_auto_black (dt_iop_module_t *self)
static void	apply_auto_dynamic_range (dt_iop_module_t *self)
static void	apply_autotune (dt_iop_module_t *self)
void	gui_changed (dt_iop_module_t *self, GtkWidget *w, void *previous)
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_reset (dt_iop_module_t *self)
void	gui_update (dt_iop_module_t *self)
void	init_global (dt_iop_module_so_t *module)
void	cleanup_global (dt_iop_module_so_t *module)
void	gui_init (dt_iop_module_t *self)

Typedef Documentation

dt_iop_profilegamma_data_t

typedef struct dt_iop_profilegamma_data_t dt_iop_profilegamma_data_t

dt_iop_profilegamma_global_data_t

typedef struct dt_iop_profilegamma_global_data_t dt_iop_profilegamma_global_data_t

dt_iop_profilegamma_gui_data_t

typedef struct dt_iop_profilegamma_gui_data_t dt_iop_profilegamma_gui_data_t

dt_iop_profilegamma_mode_t

typedef enum dt_iop_profilegamma_mode_t dt_iop_profilegamma_mode_t

dt_iop_profilegamma_params_t

typedef struct dt_iop_profilegamma_params_t dt_iop_profilegamma_params_t

Enumeration Type Documentation

dt_iop_profilegamma_mode_t

enum dt_iop_profilegamma_mode_t

Enumerator
PROFILEGAMMA_LOG
PROFILEGAMMA_GAMMA

Function Documentation

apply_auto_black()

static void apply_auto_black ( dt_iop_module_t *  self )

static

References darktable, darktable_t::develop, dt_bauhaus_slider_set(), dt_dev_add_history_item, darktable_t::gui, dt_iop_module_t::gui_data, Log2Thres(), dt_iop_module_t::params, dt_iop_module_t::picked_color_min, dt_gui_gtk_t::reset, and TRUE.

Referenced by color_picker_apply().

apply_auto_dynamic_range()

static void apply_auto_dynamic_range ( dt_iop_module_t *  self )

static

References darktable, darktable_t::develop, dt_bauhaus_slider_set(), dt_dev_add_history_item, darktable_t::gui, dt_iop_module_t::gui_data, Log2Thres(), dt_iop_module_t::params, dt_iop_module_t::picked_color_max, dt_gui_gtk_t::reset, and TRUE.

Referenced by color_picker_apply().

apply_auto_grey()

static void apply_auto_grey ( dt_iop_module_t *  self )

static

References darktable, darktable_t::develop, dt_bauhaus_slider_set(), dt_dev_add_history_item, darktable_t::gui, dt_iop_module_t::gui_data, dt_iop_module_t::params, dt_iop_module_t::picked_color, dt_gui_gtk_t::reset, and TRUE.

Referenced by color_picker_apply().

apply_autotune()

static void apply_autotune ( dt_iop_module_t *  self )

static

References darktable, darktable_t::develop, dt_bauhaus_slider_set(), dt_dev_add_history_item, darktable_t::gui, dt_iop_module_t::gui_data, Log2Thres(), dt_iop_module_t::params, dt_iop_module_t::picked_color, dt_iop_module_t::picked_color_max, dt_iop_module_t::picked_color_min, dt_gui_gtk_t::reset, and TRUE.

Referenced by color_picker_apply().

cleanup_global()

void cleanup_global

(

dt_iop_module_so_t *

module

)

References dt_iop_module_so_t::data, dt_opencl_free_kernel(), dt_iop_profilegamma_global_data_t::kernel_profilegamma, and dt_iop_profilegamma_global_data_t::kernel_profilegamma_log.

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 apply_auto_black(), apply_auto_dynamic_range(), apply_auto_grey(), apply_autotune(), and dt_iop_module_t::gui_data.

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 dt_dev_pixelpipe_iop_t::data, dt_iop_estimate_exp(), dt_iop_profilegamma_data_t::dynamic_range, dt_iop_profilegamma_data_t::gamma, dt_iop_profilegamma_data_t::grey_point, linear, dt_iop_profilegamma_data_t::linear, dt_iop_profilegamma_data_t::mode, dt_iop_profilegamma_data_t::security_factor, dt_iop_profilegamma_data_t::shadows_range, dt_iop_profilegamma_data_t::table, and dt_iop_profilegamma_data_t::unbounded_coeffs.

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_TECHNICAL.

description()

const char ** description

(

struct dt_iop_module_t *

self

)

References dt_iop_set_description().

flags()

int flags

(

)

References IOP_FLAGS_ALLOW_TILING, IOP_FLAGS_INCLUDE_IN_STYLES, IOP_FLAGS_ONE_INSTANCE, and IOP_FLAGS_SUPPORTS_BLENDING.

gui_changed()

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

References darktable, dt_bauhaus_slider_set(), darktable_t::gui, dt_iop_module_t::gui_data, dt_iop_module_t::params, PROFILEGAMMA_LOG, and dt_gui_gtk_t::reset.

Referenced by gui_update().

gui_init()

void gui_init

(

dt_iop_module_t *

self

)

References darktable_t::bauhaus, darktable, dt_bauhaus_combobox_from_params(), dt_bauhaus_combobox_new(), dt_bauhaus_slider_from_params(), dt_bauhaus_slider_set_digits(), dt_bauhaus_slider_set_format(), dt_bauhaus_slider_set_soft_max(), dt_bauhaus_slider_set_soft_range(), DT_BAUHAUS_SPACE, dt_bauhaus_widget_set_label(), DT_COLOR_PICKER_AREA, dt_color_picker_new(), DT_GUI_MODULE, dt_ui_section_label_new(), FALSE, IOP_GUI_ALLOC, TRUE, and dt_iop_module_t::widget.

gui_reset()

void gui_reset

(

dt_iop_module_t *

self

)

References dt_iop_color_picker_reset(), and TRUE.

gui_update()

void gui_update

(

dt_iop_module_t *

self

)

References dt_iop_color_picker_reset(), gui_changed(), dt_iop_module_t::gui_data, and TRUE.

init_global()

void init_global

(

dt_iop_module_so_t *

module

)

References dt_opencl_create_kernel(), dt_iop_profilegamma_global_data_t::kernel_profilegamma, and dt_iop_profilegamma_global_data_t::kernel_profilegamma_log.

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.

init_presets()

void init_presets

(

dt_iop_module_so_t *

self

)

References DEVELOP_BLEND_CS_RGB_DISPLAY, dt_gui_presets_add_generic(), dt_iop_module_so_t::op, and PROFILEGAMMA_LOG.

legacy_params()

int legacy_params	(	dt_iop_module_t *	self,
		const void *const	old_params,
		const int	old_version,
		void *	new_params,
		const int	new_version
	)

References dt_iop_module_t::default_params, dt_iop_profilegamma_params_t::gamma, linear, dt_iop_profilegamma_params_t::linear, dt_iop_profilegamma_params_t::mode, and PROFILEGAMMA_GAMMA.

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
	)

The log2(x) -> -INF when x -> 0 thus very low values (noise) will get even lower, resulting in noise negative amplification, which leads to pepper noise in shadows. To avoid that, we need to clip values that are noise for sure. Using 16 bits RAW data, the black value (known by rawspeed for every manufacturer) could be used as a threshold. However, at this point of the pixelpipe, the RAW levels have already been corrected and everything can happen with black levels in the exposure module. So we define the threshold as the first non-null 16 bit integer

References dt_dev_pixelpipe_iop_t::colors, dt_dev_pixelpipe_iop_t::data, DT_DEV_PIXELPIPE_DISPLAY_MASK, dt_iop_alpha_copy(), dt_iop_eval_exp(), dt_iop_profilegamma_data_t::dynamic_range, fastlog2(), dt_iop_profilegamma_data_t::grey_point, dt_iop_roi_t::height, dt_iop_profilegamma_data_t::mode, dt_dev_pixelpipe_iop_t::pipe, PROFILEGAMMA_GAMMA, PROFILEGAMMA_LOG, dt_iop_profilegamma_data_t::shadows_range, dt_iop_profilegamma_data_t::table, dt_iop_profilegamma_data_t::unbounded_coeffs, and dt_iop_roi_t::width.