imageio_jpeg.h

Go to the documentation of this file.

/*
    This file is part of darktable,
    Copyright (C) 2009-2011, 2014 johannes hanika.
    Copyright (C) 2012 Richard Wonka.
    Copyright (C) 2012, 2014-2016 Tobias Ellinghaus.
    Copyright (C) 2012 Ulrich Pegelow.
    Copyright (C) 2016 Roman Lebedev.
    Copyright (C) 2020 Pascal Obry.
    Copyright (C) 2022 Martin Bařinka.
    Copyright (C) 2025 Alynx Zhou.
    Copyright (C) 2025 Aurélien PIERRE.
    
    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 <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
// this fixes a rather annoying, long time bug in libjpeg :(
#undef HAVE_STDLIB_H
#undef HAVE_STDDEF_H
#include <jpeglib.h>
#undef HAVE_STDLIB_H
#undef HAVE_STDDEF_H
 
#include "common/colorspaces.h"
#include "common/image.h"
#include "common/mipmap_cache.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef struct dt_imageio_jpeg_t
{
  int width, height;
  struct jpeg_source_mgr src;
  struct jpeg_destination_mgr dest;
  struct jpeg_decompress_struct dinfo;
  struct jpeg_compress_struct cinfo;
  FILE *f;
} dt_imageio_jpeg_t;
 
int dt_imageio_jpeg_decompress_header(const void *in, size_t length, dt_imageio_jpeg_t *jpg);
int dt_imageio_jpeg_decompress(dt_imageio_jpeg_t *jpg, uint8_t *out);
int dt_imageio_jpeg_compress(const uint8_t *in, uint8_t *out, const int width, const int height,
                             const int quality);
 
int dt_imageio_jpeg_write(const char *filename, const uint8_t *in, const int width, const int height,
                          const int quality, const void *exif, int exif_len);
int dt_imageio_jpeg_write_with_icc_profile(const char *filename, const uint8_t *in, const int width,
                                           const int height, const int quality, const void *exif, int exif_len,
                                           int32_t imgid);
int dt_imageio_jpeg_read_header(const char *filename, dt_imageio_jpeg_t *jpg);
int dt_imageio_jpeg_read(dt_imageio_jpeg_t *jpg, uint8_t *out);
int dt_imageio_jpeg_read_profile(dt_imageio_jpeg_t *jpg, uint8_t **out);
dt_colorspaces_color_profile_type_t dt_imageio_jpeg_read_color_space(dt_imageio_jpeg_t *jpg);
 
dt_imageio_retval_t dt_imageio_open_jpeg(dt_image_t *img, const char *filename, dt_mipmap_buffer_t *buf);
 
#ifdef __cplusplus
}
#endif
 
// clang-format off
// modelines: These editor modelines have been set for all relevant files by tools/update_modelines.py
// vim: shiftwidth=2 expandtab tabstop=2 cindent
// kate: tab-indents: off; indent-width 2; replace-tabs on; indent-mode cstyle; remove-trailing-spaces modified;
// clang-format on