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mirror of https://github.com/woo-j/zint.git synced 2024-12-25 09:33:56 +03:00
zint/backend/common.h
gitlost fab7435fac Performance improvements for linear encoding and raster output
- use fixed-length string tables (mostly) instead of (char *) pointer ones
   (saves ~40K)
 - re-use C128Table for CODABLOCKF and CODE16K
   (required removal of Stop character and extra CODE16K-only entry)
 - use pointer to destination and copy (memcpy/strcpy(), bin_append_posn())
   instead of concatenating (strcat()) (mostly)
 - replace last remaining bin_append()s with bin_append_posn();
   bin_append() removed
 - add length arg to toupper() and expand() (avoids strlen())
 - change is_sane() to use table-based flags (avoids an iteration)
 - rename lookup() to is_sane_lookup() and change to check and return posns
   and use in pointer to destination loops (avoids strcat()s)
 - remove special case PHARMA in expand() (dealt with in pharma())
 - make #define SILVER/CALCIUM/TECHNETIUM/KRSET etc static strings
 - replace strchr() -> posn()
 - CODE128: populate destination once in checksum loop; re-use and export
   some more routines (c128_set_a/b/c(), c128_put_in_set()) for sharing;
   prefix defines (SHIFTA -> C128_SHIFTA etc) and existing exported routines
 - use factor XOR toggle trick in checksum calcs (avoids branch)
 - raster.c: fill out single 1-pixel row and copy using new draw_bar_line(),
   copy_bar_line() routines; similarly in buffer_plot compare previous line &
   copy if same (same technique as used to improve non-half-integer scaling,
   significant performance increase, (c) codemonkey82);
   also done for PNG (BMP/GIF/PCX/TIFF not done)
 - raster/vector/output.c: shorten "output_" prefix -> "out_";
   sync vector to other raster changes to try to keep source files similar
 - 2of5.c: prefix "c25_"
JAPANPOST: return error if input data truncated (backward incompatible)
DAFT: max chars 50 -> 100
common.c: istwodigit() -> is_twodigit()
common.c/emf.c/output.c: use some further stripf()s (MSVC6 float variations)
library.c: new check_output_args() helper
zint.h: add BARCODE_LAST marker and use in library.c
QRCODE: remove a NOLINT (requires clang-tidy-13), one remaining
CMake: separate no-optimize from ZINT_DEBUG into new ZINT_NOOPT option
2021-10-20 23:05:30 +01:00

195 lines
8.1 KiB
C

/* common.h - Header for all common functions in common.c */
/*
libzint - the open source barcode library
Copyright (C) 2009 - 2021 Robin Stuart <rstuart114@gmail.com>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the project nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
/* vim: set ts=4 sw=4 et : */
#ifndef __COMMON_H
#define __COMMON_H
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
/* `is_sane()` flags */
#define IS_SPC_F 0x0001 /* Space */
#define IS_HSH_F 0x0002 /* Hash sign # */
#define IS_PLS_F 0x0004 /* Plus sign + */
#define IS_MNS_F 0x0008 /* Minus sign - */
#define IS_NUM_F 0x0010 /* Number 0-9 */
#define IS_UPO_F 0x0020 /* Uppercase letter, apart from A-F and X */
#define IS_UHX_F 0x0040 /* Uppercase hex A-F */
#define IS_UX__F 0x0080 /* Uppercase X */
#define IS_LWO_F 0x0100 /* Lowercase letter, apart from a-f and x */
#define IS_LHX_F 0x0200 /* Lowercase hex a-f */
#define IS_LX__F 0x0400 /* Lowercase x */
#define IS_C82_F 0x0800 /* CSET82 punctuation (apart from - and +) */
#define IS_SIL_F 0x1000 /* SILVER/TECHNETIUM punctuation .$/% (apart from space, - and +) */
#define IS_CLI_F 0x2000 /* CALCIUM INNER punctuation $:/. (apart from - and +) (Codabar) */
#define IS_ARS_F 0x4000 /* ARSENIC uppercase subset (VIN) */
#define IS_UPR_F (IS_UPO_F | IS_UHX_F | IS_UX__F) /* Uppercase letters */
#define IS_LWR_F (IS_LWO_F | IS_LHX_F | IS_LX__F) /* Lowercase letters */
/* The most commonly used set */
#define NEON_F IS_NUM_F /* NEON "0123456789" */
#include "zint.h"
#include "zintconfig.h"
#include <stdlib.h>
#include <string.h>
/* Helpers to cast away char pointer signedness */
#define ustrlen(source) strlen((const char *) (source))
#define ustrcpy(target, source) strcpy((char *) (target), (const char *) (source))
#define ustrcat(target, source) strcat((char *) (target), (const char *) (source))
#define ustrncat(target, source, count) strncat((char *) (target), (const char *) (source), (count))
#ifdef _MSC_VER
# if _MSC_VER == 1200 /* VC6 */
# define ceilf (float) ceil
# define floorf (float) floor
# define fmodf (float) fmod
# endif
# if _MSC_VER < 1800 /* round (C99) not before MSVC 2013 (C++ 12.0) */
# define round(arg) floor((arg) + 0.5)
# define roundf(arg) floorf((arg) + 0.5f)
# endif
# pragma warning(disable: 4244) /* conversion from int to float */
# if _MSC_VER != 1200 /* VC6 */
# pragma warning(disable: 4996) /* function or variable may be unsafe */
# endif
#endif
/* Is float integral value? (https://stackoverflow.com/a/40404149) */
#define isfintf(arg) (fmodf(arg, 1.0f) == 0.0f)
#if (defined(__GNUC__) || defined(__clang__)) && !defined(ZINT_TEST) && !defined(__MINGW32__)
# define INTERNAL __attribute__ ((visibility ("hidden")))
#elif defined(ZINT_TEST)
# define INTERNAL ZINT_EXTERN /* The test suite references INTERNAL functions, so they need to be exported */
#else
# define INTERNAL
#endif
#if (defined(__GNUC__) || defined(__clang__)) && !defined(__MINGW32__)
# define INTERNAL_DATA_EXTERN __attribute__ ((visibility ("hidden"))) extern
# define INTERNAL_DATA __attribute__ ((visibility ("hidden")))
#else
# define INTERNAL_DATA_EXTERN extern
# define INTERNAL_DATA
#endif
#ifdef ZINT_TEST
#define STATIC_UNLESS_ZINT_TEST INTERNAL
#else
#define STATIC_UNLESS_ZINT_TEST static
#endif
#define COMMON_INLINE 1
#ifdef COMMON_INLINE
/* Return true (1) if a module is dark/black, otherwise false (0) */
# define module_is_set(s, y, x) (((s)->encoded_data[(y)][(x) >> 3] >> ((x) & 0x07)) & 1)
/* Set a module to dark/black */
# define set_module(s, y, x) do { (s)->encoded_data[(y)][(x) >> 3] |= 1 << ((x) & 0x07); } while (0)
/* Return true (1-8) if a module is colour, otherwise false (0) */
# define module_colour_is_set(s, y, x) ((s)->encoded_data[(y)][(x)])
/* Set a module to a colour */
# define set_module_colour(s, y, x, c) do { (s)->encoded_data[(y)][(x)] = (c); } while (0)
#endif
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
INTERNAL int ctoi(const char source);
INTERNAL char itoc(const int source);
INTERNAL int to_int(const unsigned char source[], const int length);
INTERNAL void to_upper(unsigned char source[], const int length);
INTERNAL int chr_cnt(const unsigned char string[], const int length, const unsigned char c);
INTERNAL int is_sane(const unsigned int flg, const unsigned char source[], const int length);
INTERNAL int is_sane_lookup(const char test_string[], const int test_length, const unsigned char source[],
const int length, int *posns);
INTERNAL int posn(const char set_string[], const char data);
INTERNAL int bin_append_posn(const int arg, const int length, char *binary, const int bin_posn);
#ifndef COMMON_INLINE
INTERNAL int module_is_set(const struct zint_symbol *symbol, const int y_coord, const int x_coord);
INTERNAL void set_module(struct zint_symbol *symbol, const int y_coord, const int x_coord);
INTERNAL int module_colour_is_set(const struct zint_symbol *symbol, const int y_coord, const int x_coord);
INTERNAL void set_module_colour(struct zint_symbol *symbol, const int y_coord, const int x_coord,
const int colour);
#endif
INTERNAL void unset_module(struct zint_symbol *symbol, const int y_coord, const int x_coord);
INTERNAL void expand(struct zint_symbol *symbol, const char data[], const int length);
INTERNAL int is_stackable(const int symbology);
INTERNAL int is_extendable(const int symbology);
INTERNAL int is_composite(const int symbology);
INTERNAL int is_twodigits(const unsigned char source[], const int length, const int position);
INTERNAL unsigned int decode_utf8(unsigned int *state, unsigned int *codep, const unsigned char byte);
INTERNAL int is_valid_utf8(const unsigned char source[], const int length);
INTERNAL int utf8_to_unicode(struct zint_symbol *symbol, const unsigned char source[], unsigned int vals[],
int *length, const int disallow_4byte);
INTERNAL int set_height(struct zint_symbol *symbol, const float min_row_height, const float default_height,
const float max_height, const int set_errtxt);
INTERNAL float stripf(const float arg);
INTERNAL int colour_to_red(const int colour);
INTERNAL int colour_to_green(const int colour);
INTERNAL int colour_to_blue(const int colour);
#ifdef ZINT_TEST
INTERNAL void debug_test_codeword_dump(struct zint_symbol *symbol, const unsigned char *codewords,
const int length);
INTERNAL void debug_test_codeword_dump_int(struct zint_symbol *symbol, const int *codewords, const int length);
#endif
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __COMMON_H */