rs.h File Reference

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Classes
struct	rs_gf256

Macros
#define	_qrcode_rs_H
#define	QR_M0
#define	QR_PPOLY

Typedefs
typedef struct rs_gf256	rs_gf256

Functions
void	rs_compute_genpoly (const rs_gf256 *_gf, int _m0, unsigned char *_genpoly, int _npar)
int	rs_correct (const rs_gf256 *_gf, int _m0, unsigned char *_data, int _ndata, int _npar, const unsigned char *_erasures, int _nerasures)
void	rs_encode (const rs_gf256 *_gf, unsigned char *_data, int _ndata, const unsigned char *_genpoly, int _npar)
void	rs_gf256_init (rs_gf256 *_gf, unsigned _ppoly)

Macro Definition Documentation

#define _qrcode_rs_H

#define QR_M0

Referenced by qr_code_decode(), and rs_encode().

#define QR_PPOLY

Referenced by qr_reader_init(), and rs_encode().

Typedef Documentation

typedef struct rs_gf256 rs_gf256

Function Documentation

void rs_compute_genpoly	(	const rs_gf256 *	_gf,
		int	_m0,
		unsigned char *	_genpoly,
		int	_npar
	)

References rs_gf256::exp, rs_gf256::log, rs_hgmul(), and rs_poly_zero().

Referenced by rs_encode().

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int rs_correct	(	const rs_gf256 *	_gf,
		int	_m0,
		unsigned char *	_data,
		int	_ndata,
		int	_npar,
		const unsigned char *	_erasures,
		int	_nerasures
	)

References rs_gf256::exp, rs_gf256::log, rs_calc_syndrome(), rs_find_roots(), rs_gdiv(), rs_hgmul(), and rs_modified_berlekamp_massey().

Referenced by qr_code_decode(), and rs_encode().

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void rs_encode	(	const rs_gf256 *	_gf,
		unsigned char *	_data,
		int	_ndata,
		const unsigned char *	_genpoly,
		int	_npar
	)

References test_zbar::data, rs_gf256::exp, fprintf(), rs_gf256::log, main(), QR_M0, QR_PPOLY, rs_compute_genpoly(), rs_correct(), rs_encode(), rs_gf256_init(), rs_gmul(), rs_hgmul(), rs_poly_div_x(), rs_poly_zero(), rs_quartic_solve(), and x.

Referenced by rs_encode().

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void rs_gf256_init	(	rs_gf256 *	_gf,
		unsigned	_ppoly
	)

References rs_gf256::exp, and rs_gf256::log.

Referenced by qr_reader_init(), and rs_encode().

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