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Corrected reed-solomon/Data Matrix bug

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This commit is contained in:
hooper114 2008-10-12 18:52:54 +00:00
parent 5994ff5cf7
commit 944a754fee
6 changed files with 19 additions and 20 deletions
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1
backend/auspost.c
View File

@ -91,6 +91,7 @@ void rs_error(char data_pattern[])
{
concat(data_pattern, AusBarTable[(int)result[reader - 1]]);
}
rs_free();
}
int australia_post(struct zint_symbol *symbol, unsigned char source[])

5
backend/aztec.c
View File

@ -802,6 +802,7 @@ int aztec(struct zint_symbol *symbol, unsigned char source[])
if(ecc_part[i] & 0x02) { concat(adjusted_string, "1"); } else { concat(adjusted_string, "0"); }
if(ecc_part[i] & 0x01) { concat(adjusted_string, "1"); } else { concat(adjusted_string, "0"); }
}
rs_free();
break;
case 8:
for(i = 0; i < data_blocks; i++) {
@ -827,6 +828,7 @@ int aztec(struct zint_symbol *symbol, unsigned char source[])
if(ecc_part[i] & 0x02) { concat(adjusted_string, "1"); } else { concat(adjusted_string, "0"); }
if(ecc_part[i] & 0x01) { concat(adjusted_string, "1"); } else { concat(adjusted_string, "0"); }
}
rs_free();
break;
case 10:
for(i = 0; i < data_blocks; i++) {
@ -856,6 +858,7 @@ int aztec(struct zint_symbol *symbol, unsigned char source[])
if(ecc_part[i] & 0x02) { concat(adjusted_string, "1"); } else { concat(adjusted_string, "0"); }
if(ecc_part[i] & 0x01) { concat(adjusted_string, "1"); } else { concat(adjusted_string, "0"); }
}
rs_free();
break;
case 12:
for(i = 0; i < data_blocks; i++) {
@ -889,6 +892,7 @@ int aztec(struct zint_symbol *symbol, unsigned char source[])
if(ecc_part[i] & 0x02) { concat(adjusted_string, "1"); } else { concat(adjusted_string, "0"); }
if(ecc_part[i] & 0x01) { concat(adjusted_string, "1"); } else { concat(adjusted_string, "0"); }
}
rs_free();
break;
}
@ -968,6 +972,7 @@ int aztec(struct zint_symbol *symbol, unsigned char source[])
if(desc_ecc[i] & 0x01) { descriptor[(i * 4) + 19] = '1'; }
}
}
rs_free();
/* Merge descriptor with the rest of the symbol */
for(i = 0; i < 40; i++) {

4
backend/dm200.c
View File

@ -221,6 +221,7 @@ static void ecc200(unsigned char *binary, int bytes, int datablock, int rsblock)
for (n = b; n < rsblock * blocks; n += blocks)
binary[bytes + n] = ecc[p--];
}
rs_free();
}
/*
@ -237,6 +238,7 @@ char ecc200encode(unsigned char *t, int tl, unsigned char *s, int sl, char *enco
fprintf(stderr, "Encoding string too short\n");
return 0;
}
// do the encoding
while (sp < sl && tp < tl) {
char newenc = enc; // suggest new encoding
@ -851,14 +853,12 @@ int iec16022ecc200(unsigned char *barcode, int barcodelen, struct zint_symbol *s
}
symbol->row_height[(H - y) - 1] = 1;
}
free(grid);
free(places);
}
symbol->rows = H;
symbol->width = W;
free(encoding);
return 0;
}

3
backend/maxicode.c
View File

@ -48,6 +48,7 @@ void maxi_do_primary_check( )
for ( j = 0; j < ecclen; j += 1)
maxi_codeword[ datalen + j] = results[j];
rs_free();
}
void maxi_do_secondary_chk_odd( int ecclen )
@ -72,6 +73,7 @@ void maxi_do_secondary_chk_odd( int ecclen )
for ( j = 0; j < (ecclen); j += 1)
maxi_codeword[ datalen + (2 *j) + 1 + 20 ] = results[j];
rs_free();
}
void maxi_do_secondary_chk_even(int ecclen )
@ -96,6 +98,7 @@ void maxi_do_secondary_chk_even(int ecclen )
for ( j = 0; j < (ecclen); j += 1)
maxi_codeword[ datalen + (2 *j) + 20] = results[j];
rs_free();
}
void maxi_bump(int set[], int character[], int bump_posn)

23
backend/reedsol.c
View File

@ -104,8 +104,7 @@ void rs_init_code(int nsym, int index)
rspoly[i] = 1;
for (k = i - 1; k > 0; k--) {
if (rspoly[k])
rspoly[k] =
alog[(log[rspoly[k]] + index) % logmod];
rspoly[k] = alog[(log[rspoly[k]] + index) % logmod];
rspoly[k] ^= rspoly[k - 1];
}
rspoly[0] = alog[(log[rspoly[0]] + index) % logmod];
@ -122,10 +121,7 @@ void rs_encode(int len, unsigned char *data, unsigned char *res)
m = res[rlen - 1] ^ data[i];
for (k = rlen - 1; k > 0; k--) {
if (m && rspoly[k])
res[k] =
res[k -
1] ^ alog[(log[m] +
log[rspoly[k]]) % logmod];
res[k] = res[k - 1] ^ alog[(log[m] + log[rspoly[k]]) % logmod];
else
res[k] = res[k - 1];
}
@ -134,12 +130,6 @@ void rs_encode(int len, unsigned char *data, unsigned char *res)
else
res[0] = 0;
}
free(log);
free(alog);
free(rspoly);
rspoly = NULL;
}
void rs_encode_long(int len, unsigned int *data, unsigned int *res)
@ -151,10 +141,7 @@ void rs_encode_long(int len, unsigned int *data, unsigned int *res)
m = res[rlen - 1] ^ data[i];
for (k = rlen - 1; k > 0; k--) {
if (m && rspoly[k])
res[k] =
res[k -
1] ^ alog[(log[m] +
log[rspoly[k]]) % logmod];
res[k] = res[k - 1] ^ alog[(log[m] + log[rspoly[k]]) % logmod];
else
res[k] = res[k - 1];
}
@ -163,10 +150,12 @@ void rs_encode_long(int len, unsigned int *data, unsigned int *res)
else
res[0] = 0;
}
}
void rs_free()
{ /* Free memory */
free(log);
free(alog);
free(rspoly);
rspoly = NULL;
}

1
backend/reedsol.h
View File

@ -26,5 +26,6 @@ void rs_init_gf(int poly);
void rs_init_code(int nsym, int index);
void rs_encode(int len, unsigned char *data, unsigned char *res);
void rs_encode_long(int len, unsigned int *data, unsigned int *res);
void rs_free();
#endif /* __REEDSOL_H */