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CODE128: Add minimal encodation algorithm (non-extended ASCII only)

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from ZXing (props Alex Geller) - about 25-60% slower depending on
  data & stack heavy but does improve some outcomes when FNC1s
  present (GS1_MODE or manual) although not much else it appears
  (the previous algorithm was very good), but has a logical clarity
  the other lacked - funcs `c128_dxsmooth()` etc shared with
  CODE16K now moved there and renamed as `c16k_`;
  also fix extended char latching when exactly 4 extended chars
  at end
  also manual code set switching now honoured exactly even if
  immediate shift required;
manual: make explicit that AI "(00)" and "(01)" prefixes added by
  Zint are HRT-only
general: add `extern "C"` wrappers to a few header files
This commit is contained in:
gitlost 2024-09-07 12:44:16 +01:00
parent 10747d6385
commit 93c3e27fba
23 changed files with 1017 additions and 958 deletions
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8
backend/pdf417.h
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@ -36,6 +36,10 @@
#ifndef Z_PDF417_H
#define Z_PDF417_H
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/* PDF417 error correction coefficients from Grand Zebu */
INTERNAL_DATA_EXTERN const unsigned short pdf_coefrs[1022];
@ -59,5 +63,9 @@ INTERNAL_DATA_EXTERN const unsigned short pdf_rap_centre[52];
INTERNAL void pdf_byteprocess(short *chainemc, int *p_mclength, const unsigned char chaine[], int start,
const int length, const int lastmode);
#ifdef __cplusplus
}
#endif /* __cplusplus */
/* vim: set ts=4 sw=4 et : */
#endif /* Z_PDF417_H */