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  1. /*
  2. * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
  3. *
  4. * This library is free software; you can redistribute it and/or
  5. * modify it under the terms of the GNU Lesser General Public
  6. * License as published by the Free Software Foundation; either
  7. * version 2 of the License, or (at your option) any later version.
  8. *
  9. * This library is distributed in the hope that it will be useful,
  10. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. * Lesser General Public License for more details.
  13. *
  14. * You should have received a copy of the GNU Lesser General Public
  15. * License along with this library; if not, write to the Free Software
  16. * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17. */
  18. #ifndef CRC_H
  19. #define CRC_H
  20. typedef uint32_t AVCRC;
  21. extern AVCRC *av_crcEDB88320;
  22. extern AVCRC *av_crc04C11DB7;
  23. extern AVCRC *av_crc8005 ;
  24. extern AVCRC *av_crc07 ;
  25. int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size);
  26. uint32_t av_crc(const AVCRC *ctx, uint32_t start_crc, const uint8_t *buffer, size_t length);
  27. #endif /* CRC_H */