Ansel 0.0
A darktable fork - bloat + design vision
•All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Pages
Data Structures | Macros | Typedefs | Enumerations | Functions
dither.c File Reference
#include "bauhaus/bauhaus.h"
#include "common/imagebuf.h"
#include "common/imageio.h"
#include "common/math.h"
#include "common/opencl.h"
#include "common/tea.h"
#include "control/control.h"
#include "develop/develop.h"
#include "develop/imageop.h"
#include "develop/imageop_math.h"
#include "develop/imageop_gui.h"
#include "develop/tiling.h"
#include "dtgtk/gradientslider.h"
#include "gui/gtk.h"
#include "gui/presets.h"
#include "iop/iop_api.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>
#include <inttypes.h>
+ Include dependency graph for dither.c:

Data Structures

struct  dt_iop_dither_params_t
 
struct  dt_iop_dither_gui_data_t
 
struct  dt_iop_dither_data_t
 

Macros

#define clipnan_pixel_sse   clipnan_pixel
 
#define RIGHT_WT   (7.0f/16.0f)
 
#define DOWNRIGHT_WT   (1.0f/16.0f)
 
#define DOWN_WT   (5.0f/16.0f)
 
#define DOWNLEFT_WT   (3.0f/16.0f)
 
#define PROCESS_PIXEL_FULL(_pixel, inpix)
 
#define PROCESS_PIXEL_LEFT(_pixel, inpix)
 
#define PROCESS_PIXEL_RIGHT(pixel)
 

Typedefs

typedef enum dt_iop_dither_type_t dt_iop_dither_type_t
 
typedef struct dt_iop_dither_params_t dt_iop_dither_params_t
 
typedef struct dt_iop_dither_gui_data_t dt_iop_dither_gui_data_t
 
typedef struct dt_iop_dither_data_t dt_iop_dither_data_t
 

Enumerations

enum  dt_iop_dither_type_t {
  DITHER_RANDOM ,
  DITHER_FS1BIT ,
  DITHER_FS4BIT_GRAY ,
  DITHER_FS8BIT ,
  DITHER_FS16BIT ,
  DITHER_FSAUTO
}
 

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)
 
void reload_defaults (dt_iop_module_t *module)
 
static float _quantize (const float val, const float f, const float rf)
 
static float _rgb_to_gray (const float *const restrict val)
 
static void nearest_color (float *const restrict val, float *const restrict err, int graymode, const float f, const float rf)
 
static void _diffuse_error (float *const restrict val, const float *const restrict err, const float factor)
 
static float clipnan (const float x)
 
static void clipnan_pixel (float *const restrict out, const float *const restrict in)
 
static int get_dither_parameters (const dt_iop_dither_data_t *const data, const dt_dev_pixelpipe_iop_t *const piece, const float scale, unsigned int *const restrict levels)
 
static void process_floyd_steinberg (struct 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 process_random (struct 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)
 
void process (struct 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)
 
void gui_changed (dt_iop_module_t *self, GtkWidget *w, void *previous)
 
void commit_params (struct dt_iop_module_t *self, dt_iop_params_t *p1, dt_dev_pixelpipe_t *pipe, dt_dev_pixelpipe_iop_t *piece)
 
void init_pipe (struct dt_iop_module_t *self, dt_dev_pixelpipe_t *pipe, dt_dev_pixelpipe_iop_t *piece)
 
void cleanup_pipe (struct dt_iop_module_t *self, dt_dev_pixelpipe_t *pipe, dt_dev_pixelpipe_iop_t *piece)
 
void gui_update (struct dt_iop_module_t *self)
 
void gui_init (struct dt_iop_module_t *self)
 

Macro Definition Documentation

◆ clipnan_pixel_sse

#define clipnan_pixel_sse   clipnan_pixel

◆ DOWN_WT

#define DOWN_WT   (5.0f/16.0f)

◆ DOWNLEFT_WT

#define DOWNLEFT_WT   (3.0f/16.0f)

◆ DOWNRIGHT_WT

#define DOWNRIGHT_WT   (1.0f/16.0f)

◆ PROCESS_PIXEL_FULL

#define PROCESS_PIXEL_FULL (   _pixel,
  inpix 
)
Value:
{ \
float *const pixel_ = (_pixel); \
nearest_color(pixel_, err, graymode, f, rf); /* quantize pixel */ \
clipnan_pixel(pixel_ + downright,(inpix) + downright); /* prepare downright for first access */ \
_diffuse_error(pixel_ + right, err, RIGHT_WT); /* diffuse quantization error to neighbors */ \
_diffuse_error(pixel_ + downleft, err, DOWNLEFT_WT); \
_diffuse_error(pixel_ + down, err, DOWN_WT); \
_diffuse_error(pixel_ + downright, err, DOWNRIGHT_WT); \
}
RIGHT_WT
#define RIGHT_WT
Definition dither.c:351
DOWNRIGHT_WT
#define DOWNRIGHT_WT
Definition dither.c:352
DOWNLEFT_WT
#define DOWNLEFT_WT
Definition dither.c:354
DOWN_WT
#define DOWN_WT
Definition dither.c:353
f
static float f(const float t, const float c, const float x)
Definition graduatednd.c:173

◆ PROCESS_PIXEL_LEFT

#define PROCESS_PIXEL_LEFT (   _pixel,
  inpix 
)
Value:
{ \
float *const pixel_ = (_pixel); \
nearest_color(pixel_, err, graymode, f, rf); /* quantize pixel */ \
clipnan_pixel(pixel_ + down,(inpix) + down); /* prepare down for first access */ \
clipnan_pixel(pixel_ + downright,(inpix) + downright); /* prepare downright for first access */ \
_diffuse_error(pixel_ + right, err, RIGHT_WT); /* diffuse quantization error to neighbors */ \
_diffuse_error(pixel_ + down, err, DOWN_WT); \
_diffuse_error(pixel_ + downright, err, DOWNRIGHT_WT); \
}

◆ PROCESS_PIXEL_RIGHT

#define PROCESS_PIXEL_RIGHT (   pixel)
Value:
nearest_color(pixel, err, graymode, f, rf); /* quantize pixel */ \
_diffuse_error(pixel + downleft, err, DOWNLEFT_WT); /* diffuse quantization error to neighbors */ \
_diffuse_error(pixel + down, err, DOWN_WT);
nearest_color
static void nearest_color(float *const restrict val, float *const restrict err, int graymode, const float f, const float rf)
Definition dither.c:171

◆ RIGHT_WT

#define RIGHT_WT   (7.0f/16.0f)

Typedef Documentation

◆ dt_iop_dither_data_t

typedef struct dt_iop_dither_data_t dt_iop_dither_data_t

◆ dt_iop_dither_gui_data_t

typedef struct dt_iop_dither_gui_data_t dt_iop_dither_gui_data_t

◆ dt_iop_dither_params_t

typedef struct dt_iop_dither_params_t dt_iop_dither_params_t

◆ dt_iop_dither_type_t

typedef enum dt_iop_dither_type_t dt_iop_dither_type_t

Enumeration Type Documentation

◆ dt_iop_dither_type_t

enum dt_iop_dither_type_t
Enumerator
DITHER_RANDOM 
DITHER_FS1BIT 
DITHER_FS4BIT_GRAY 
DITHER_FS8BIT 
DITHER_FS16BIT 
DITHER_FSAUTO 

Function Documentation

◆ _diffuse_error()

static void _diffuse_error ( float *const restrict  val,
const float *const restrict  err,
const float  factor 
)
inlinestatic

References factor.

Referenced by process_floyd_steinberg().

◆ _quantize()

static float _quantize ( const float  val,
const float  f,
const float  rf 
)
inlinestatic

References f().

Referenced by nearest_color().

◆ _rgb_to_gray()

static float _rgb_to_gray ( const float *const restrict  val)
inlinestatic

Referenced by nearest_color().

◆ cleanup_pipe()

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

References dt_dev_pixelpipe_iop_t::data.

◆ clipnan()

static float clipnan ( const float  x)
inlinestatic

Referenced by clipnan_pixel().

◆ clipnan_pixel()

static void clipnan_pixel ( float *const restrict  out,
const float *const restrict  in 
)
inlinestatic

References clipnan().

Referenced by process_floyd_steinberg().

◆ commit_params()

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

References dt_iop_dither_data_t::damping, dt_dev_pixelpipe_iop_t::data, dt_iop_dither_data_t::dither_type, dt_iop_dither_data_t::radius, dt_iop_dither_data_t::random, and dt_iop_dither_data_t::range.

◆ 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_ONE_INSTANCE.

◆ get_dither_parameters()

static int get_dither_parameters ( const dt_iop_dither_data_t *const  data,
const dt_dev_pixelpipe_iop_t *const  piece,
const float  scale,
unsigned int *const restrict  levels 
)
static

References DITHER_FS16BIT, DITHER_FS1BIT, DITHER_FS4BIT_GRAY, DITHER_FS8BIT, DITHER_FSAUTO, DITHER_RANDOM, dt_iop_dither_data_t::dither_type, DT_DEV_PIXELPIPE_EXPORT, DT_DEV_PIXELPIPE_PREVIEW, DT_DEV_PIXELPIPE_THUMBNAIL, dt_log2f(), IMAGEIO_BW, IMAGEIO_CHANNEL_MASK, IMAGEIO_FLOAT, IMAGEIO_GRAY, IMAGEIO_INT12, IMAGEIO_INT16, IMAGEIO_INT32, IMAGEIO_INT8, IMAGEIO_PREC_MASK, IMAGEIO_RGB, levels(), MAX, MIN, and dt_dev_pixelpipe_iop_t::pipe.

Referenced by process_floyd_steinberg().

◆ gui_changed()

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

References DITHER_RANDOM, dt_iop_module_t::gui_data, and dt_iop_module_t::params.

◆ gui_init()

void gui_init ( struct dt_iop_module_t *  self)

References darktable_t::bauhaus, darktable, dt_bauhaus_combobox_from_params(), dt_bauhaus_slider_from_params(), dt_bauhaus_slider_new_with_range(), dt_bauhaus_slider_set_digits(), dt_bauhaus_slider_set_format(), DT_BAUHAUS_SPACE, dt_bauhaus_widget_set_label(), DT_GUI_MODULE, DTGTK_GRADIENT_SLIDER, dtgtk_gradient_slider_multivalue_new(), dtgtk_gradient_slider_multivalue_set_marker(), dtgtk_gradient_slider_multivalue_set_value(), FALSE, GRADIENT_SLIDER_MARKER_LOWER_OPEN_BIG, GRADIENT_SLIDER_MARKER_UPPER_FILLED_BIG, IOP_GUI_ALLOC, radius_callback(), TRUE, and dt_iop_module_t::widget.

◆ gui_update()

void gui_update ( struct dt_iop_module_t *  self)

References DITHER_RANDOM, dt_bauhaus_slider_set(), DTGTK_GRADIENT_SLIDER, dtgtk_gradient_slider_multivalue_set_value(), dt_iop_module_t::gui_data, and dt_iop_module_t::params.

◆ init_pipe()

void init_pipe ( struct 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 darktable, darktable_t::db, DEVELOP_BLEND_CS_NONE, DITHER_FSAUTO, dt_database_release_transaction, dt_database_start_transaction, dt_gui_presets_add_generic(), and dt_iop_module_so_t::op.

◆ name()

const char * name ( )

◆ nearest_color()

static void nearest_color ( float *const restrict  val,
float *const restrict  err,
int  graymode,
const float  f,
const float  rf 
)
inlinestatic

References _quantize(), _rgb_to_gray(), and f().

Referenced by process_floyd_steinberg().

◆ process()

void process ( struct 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 dt_dev_pixelpipe_iop_t::data, DITHER_RANDOM, dt_iop_dither_data_t::dither_type, process_floyd_steinberg(), and process_random().

◆ process_floyd_steinberg()

static void process_floyd_steinberg ( struct 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

References _diffuse_error(), clipnan_pixel(), dt_dev_pixelpipe_iop_t::data, DT_DEV_PIXELPIPE_DISPLAY_MASK, dt_iop_alpha_copy(), f(), get_dither_parameters(), height, dt_iop_roi_t::height, levels(), nearest_color(), dt_dev_pixelpipe_iop_t::pipe, PROCESS_PIXEL_FULL, PROCESS_PIXEL_LEFT, PROCESS_PIXEL_RIGHT, RIGHT_WT, dt_iop_roi_t::scale, width, and dt_iop_roi_t::width.

Referenced by process().

◆ process_random()

static void process_random ( struct 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

References alloc_tea_states(), CLIP, dt_dev_pixelpipe_iop_t::colors, dt_iop_dither_data_t::damping, darktable, dt_dev_pixelpipe_iop_t::data, DT_DEV_PIXELPIPE_DISPLAY_MASK, dt_get_thread_num(), dt_iop_alpha_copy(), encrypt_tea(), free_tea_states(), get_tea_state(), height, dt_iop_roi_t::height, darktable_t::num_openmp_threads, dt_dev_pixelpipe_iop_t::pipe, dt_iop_dither_data_t::random, tpdf(), width, and dt_iop_roi_t::width.

Referenced by process().

◆ reload_defaults()

void reload_defaults ( dt_iop_module_t *  module)