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116 lines
2.8 KiB
116 lines
2.8 KiB
/* quirc -- QR-code recognition library |
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* Copyright (C) 2010-2012 Daniel Beer <dlbeer@gmail.com> |
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* |
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* Permission to use, copy, modify, and/or distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#ifndef QUIRC_INTERNAL_H_ |
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#define QUIRC_INTERNAL_H_ |
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#include <quirc.h> |
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#define QUIRC_PIXEL_WHITE 0 |
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#define QUIRC_PIXEL_BLACK 1 |
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#define QUIRC_PIXEL_REGION 2 |
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#ifndef QUIRC_MAX_REGIONS |
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#define QUIRC_MAX_REGIONS 254 |
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#endif |
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#define QUIRC_MAX_CAPSTONES 32 |
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#define QUIRC_MAX_GRIDS 8 |
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#define QUIRC_PERSPECTIVE_PARAMS 8 |
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#if QUIRC_MAX_REGIONS < UINT8_MAX |
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#define QUIRC_PIXEL_ALIAS_IMAGE 1 |
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typedef uint8_t quirc_pixel_t; |
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#elif QUIRC_MAX_REGIONS < UINT16_MAX |
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#define QUIRC_PIXEL_ALIAS_IMAGE 0 |
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typedef uint16_t quirc_pixel_t; |
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#else |
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#error "QUIRC_MAX_REGIONS > 65534 is not supported" |
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#endif |
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struct quirc_region { |
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struct quirc_point seed; |
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int count; |
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int capstone; |
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}; |
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struct quirc_capstone { |
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int ring; |
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int stone; |
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struct quirc_point corners[4]; |
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struct quirc_point center; |
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double c[QUIRC_PERSPECTIVE_PARAMS]; |
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int qr_grid; |
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}; |
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struct quirc_grid { |
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/* Capstone indices */ |
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int caps[3]; |
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/* Alignment pattern region and corner */ |
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int align_region; |
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struct quirc_point align; |
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/* Timing pattern endpoints */ |
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struct quirc_point tpep[3]; |
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int hscan; |
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int vscan; |
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/* Grid size and perspective transform */ |
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int grid_size; |
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double c[QUIRC_PERSPECTIVE_PARAMS]; |
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}; |
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struct quirc { |
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uint8_t *image; |
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quirc_pixel_t *pixels; |
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int w; |
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int h; |
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int num_regions; |
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struct quirc_region regions[QUIRC_MAX_REGIONS]; |
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int num_capstones; |
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struct quirc_capstone capstones[QUIRC_MAX_CAPSTONES]; |
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int num_grids; |
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struct quirc_grid grids[QUIRC_MAX_GRIDS]; |
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}; |
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/************************************************************************ |
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* QR-code version information database |
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*/ |
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#define QUIRC_MAX_VERSION 40 |
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#define QUIRC_MAX_ALIGNMENT 7 |
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struct quirc_rs_params { |
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int bs; /* Small block size */ |
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int dw; /* Small data words */ |
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int ns; /* Number of small blocks */ |
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}; |
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struct quirc_version_info { |
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int data_bytes; |
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int apat[QUIRC_MAX_ALIGNMENT]; |
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struct quirc_rs_params ecc[4]; |
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}; |
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extern const struct quirc_version_info quirc_version_db[QUIRC_MAX_VERSION + 1]; |
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#endif
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