noiseprofiles.h

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/*
    This file is part of darktable,
    Copyright (C) 2013-2020 darktable developers.
 
    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/image.h"
#include <glib.h>
#include <json-glib/json-glib.h>
 
typedef struct dt_noiseprofile_t
{
  char *name;
  char *maker;
  char *model;
  int iso;
  dt_aligned_pixel_t a; // poissonian part; use 4 aligned instead of 3 elements to aid vectorization
  dt_aligned_pixel_t b; // gaussian part
}
dt_noiseprofile_t;
 
extern const dt_noiseprofile_t dt_noiseprofile_generic;
 
JsonParser *dt_noiseprofile_init(const char *alternative);
 
/*
 * returns the noiseprofiles matching the image's exif data.
 * free with g_list_free_full(..., dt_noiseprofile_free);
 */
GList *dt_noiseprofile_get_matching(const dt_image_t *cimg);
 
void dt_noiseprofile_free(gpointer data);
 
/*
 * interpolate values from p1 and p2 into out.
 */
void dt_noiseprofile_interpolate(
  const dt_noiseprofile_t *const p1,  // the smaller iso
  const dt_noiseprofile_t *const p2,  // the larger iso (can't be == iso1)
  dt_noiseprofile_t *out);            // has iso initialized
 
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