imageio_jpeg.h

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/*
    This file is part of darktable,
    Copyright (C) 2009-2020 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 <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;
typedef struct 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