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pngio.h 1.4 KiB

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  1. /*
  2. * aptdec - A lightweight FOSS (NOAA) APT decoder
  3. * Copyright (C) 2019-2023 Xerbo (xerbo@protonmail.com)
  4. *
  5. * This program is free software; you can redistribute it and/or modify
  6. * it under the terms of the GNU General Public License as published by
  7. * the Free Software Foundation; either version 2 of the License, or
  8. * (at your option) any later version.
  9. *
  10. * This program is distributed in the hope that it will be useful,
  11. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13. * GNU General Public License for more details.
  14. *
  15. * You should have received a copy of the GNU General Public License
  16. * along with this program. If not, see <https://www.gnu.org/licenses/>.
  17. */
  18. #ifndef APTDEC_CLI_PNGIO_H_
  19. #define APTDEC_CLI_PNGIO_H_
  20. #include <aptdec.h>
  21. #include <png.h>
  22. typedef struct {
  23. png_structp png;
  24. png_infop info;
  25. FILE *file;
  26. aptdec_region_t region;
  27. } writer_t;
  28. writer_t *writer_init(const char *filename, aptdec_region_t region, uint32_t height, int color, char *channel);
  29. void writer_free(writer_t *png);
  30. void writer_write_image(writer_t *png, const aptdec_image_t *img);
  31. void writer_write_image_gradient(writer_t *png, const aptdec_image_t *img, const uint32_t *gradient);
  32. void writer_write_image_lut(writer_t *png, const aptdec_image_t *img, const png_colorp lut);
  33. int read_lut(const char *filename, png_colorp out);
  34. #endif