gcr.c File Reference

    Implementation of GCR coding/decoding

Author

Joakim Eriksson joaki.nosp@m.me@s.nosp@m.ics.s.nosp@m.e

#include "gcr.h"

Functions
void	gcr_decode (unsigned char gcr_data)
void	gcr_encode (unsigned char raw_data)
unsigned char	gcr_finished (void)
unsigned char	gcr_get_decoded (unsigned char *raw_data)
unsigned char	gcr_get_encoded (unsigned char *raw_data)
void	gcr_init (void)
unsigned char	gcr_valid (void)

Variables
static unsigned char	gcr_bits = 0
static const unsigned char	GCR_decode [32]
static const unsigned char	GCR_encode [16]
static unsigned short	gcr_val = 0

void gcr_decode

(

unsigned char

gcr_data

)

References gcr_bits, and gcr_val.

void gcr_encode

(

unsigned char

raw_data

)

References gcr_bits, GCR_encode, and gcr_val.

unsigned char gcr_finished

(

void

)

References gcr_bits.

unsigned char gcr_get_decoded

(

unsigned char *

raw_data

)

References gcr_bits, GCR_decode, and gcr_val.

unsigned char gcr_get_encoded

(

unsigned char *

raw_data

)

References gcr_bits, and gcr_val.

void gcr_init

(

void

)

References gcr_bits, and gcr_val.

unsigned char gcr_valid

(

void

)

References gcr_bits, GCR_decode, and gcr_val.

unsigned char gcr_bits = 0

static

Referenced by gcr_decode(), gcr_encode(), gcr_finished(), gcr_get_decoded(), gcr_get_encoded(), gcr_init(), and gcr_valid().

const unsigned char GCR_decode[32]

static

Initial value:

= {
    0xff, 0xff, 0xff, 0xff, 
    0xff, 0xff, 0xff, 0xff, 
    0xff, 0x08, 0x00, 0x01, 
    0xff, 0x0c, 0x04, 0x05, 

    0xff, 0xff, 0x02, 0x03, 
    0xff, 0x0f, 0x06, 0x07, 
    0xff, 0x09, 0x0a, 0x0b, 
    0xff, 0x0d, 0x0e, 0xff, 
  }

Referenced by gcr_get_decoded(), and gcr_valid().

const unsigned char GCR_encode[16]

static

Initial value:

= {
    0x0a, 0x0b, 0x12, 0x13,
    0x0e, 0x0f, 0x16, 0x17,
    0x09, 0x19, 0x1a, 0x1b,
    0x0d, 0x1d, 0x1e, 0x15
}

Referenced by gcr_encode().

unsigned short gcr_val = 0

static

Referenced by gcr_decode(), gcr_encode(), gcr_get_decoded(), gcr_get_encoded(), gcr_init(), and gcr_valid().