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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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10
backend/common.h
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@ -53,6 +53,7 @@ typedef unsigned __int64 uint64_t;
#endif
/* Note if change following must also change "frontend/main.c" copy */
#define ARRAY_SIZE(x) ((int) (sizeof(x) / sizeof((x)[0])))
#ifdef _MSC_VER
@ -67,6 +68,7 @@ typedef unsigned __int64 uint64_t;
# endif
# define z_alloca(nmemb) alloca(nmemb)
#endif
/* End of "frontend/main.c" copy */
#ifdef _MSC_VER
@ -198,12 +200,15 @@ INTERNAL int bin_append_posn(const int arg, const int length, char *binary, cons
#define Z_COMMON_INLINE 1
#ifdef Z_COMMON_INLINE
# define module_is_set(s, y, x) (((s)->encoded_data[y][(x) >> 3] >> ((x) & 0x07)) & 1)
# define set_module(s, y, x) do { (s)->encoded_data[y][(x) >> 3] |= 1 << ((x) & 0x07); } while (0)
# define module_colour_is_set(s, y, x) ((s)->encoded_data[y][x])
# define set_module_colour(s, y, x, c) do { (s)->encoded_data[y][x] = (c); } while (0)
# define unset_module(s, y, x) do { (s)->encoded_data[y][(x) >> 3] &= ~(1 << ((x) & 0x07)); } while (0)
#else
#else /* Z_COMMON_INLINE */
/* Returns true (1) if a module is dark/black, otherwise false (0) */
INTERNAL int module_is_set(const struct zint_symbol *symbol, const int y_coord, const int x_coord);
@ -219,8 +224,10 @@ INTERNAL void set_module_colour(struct zint_symbol *symbol, const int y_coord, c
/* Sets a dark/black module to white (i.e. unsets) */
INTERNAL void unset_module(struct zint_symbol *symbol, const int y_coord, const int x_coord);
#endif /* Z_COMMON_INLINE */
/* Expands from a width pattern to a bit pattern */
INTERNAL void expand(struct zint_symbol *symbol, const char data[], const int length);
@ -282,6 +289,7 @@ INTERNAL void segs_cpy(const struct zint_symbol *symbol, const struct zint_seg s
struct zint_seg local_segs[]);
/* Helper for ZINT_DEBUG_PRINT to put all but graphical ASCII in angle brackets */
INTERNAL char *debug_print_escape(const unsigned char *source, const int first_len, char *buf);
#ifdef ZINT_TEST