/*
  * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
  *

  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or

  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either

  * version 2.1 of the License, or (at your option) any later version.

  *

  * FFmpeg 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
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public

  * License along with FFmpeg; if not, write to the Free Software

  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 

 #ifndef AVUTIL_CRC_H
 #define AVUTIL_CRC_H

 #include <stdint.h>

 #include <stddef.h>

 #include "attributes.h"

 typedef uint32_t AVCRC;
 

 typedef enum {
     AV_CRC_8_ATM,
     AV_CRC_16_ANSI,
     AV_CRC_16_CCITT,
     AV_CRC_32_IEEE,
     AV_CRC_32_IEEE_LE,  /*< reversed bitorder version of AV_CRC_32_IEEE */

     AV_CRC_MAX,         /*< Not part of public API! Do not use outside libavutil. */

 }AVCRCId;

 
 int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size);

 const AVCRC *av_crc_get_table(AVCRCId crc_id);

 uint32_t av_crc(const AVCRC *ctx, uint32_t start_crc, const uint8_t *buffer, size_t length) av_pure;

 #endif /* AVUTIL_CRC_H */