#ifndef CRC_H #define CRC_H typedef uint32_t AVCRC; extern AVCRC *av_crcEDB88320; extern AVCRC *av_crc04C11DB7; extern AVCRC *av_crc8005 ; extern AVCRC *av_crc07 ; int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size); uint32_t av_crc(const AVCRC *ctx, uint32_t start_crc, const uint8_t *buffer, size_t length); #endif /* CRC_H */