text: /* quirc -- QR-code recognition library
   * Copyright (C) 2010-2012 Daniel Beer <dlbeer@gmail.com>
   *
   * Permission to use, copy, modify, and/or distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #ifndef QUIRC_INTERNAL_H_
  #define QUIRC_INTERNAL_H_
  
  #include "quirc.h"
  
  #define QUIRC_PIXEL_WHITE	0
  #define QUIRC_PIXEL_BLACK	1
  #define QUIRC_PIXEL_REGION	2
  
  #define QUIRC_MAX_REGIONS	254
  #define QUIRC_MAX_CAPSTONES	32
  #define QUIRC_MAX_GRIDS		8
  
  #define QUIRC_PERSPECTIVE_PARAMS	8
  
  struct quirc_region {
  	struct quirc_point	seed;
  	int			count;
  	int			capstone;
  };
  
  struct quirc_capstone {
  	int			ring;
  	int			stone;
  
  	struct quirc_point	corners[4];
  	struct quirc_point	center;
  	double			c[QUIRC_PERSPECTIVE_PARAMS];
  
  	int			qr_grid;
  };
  
  struct quirc_grid {
  	/* Capstone indices */
  	int			caps[3];
  
  	/* Alignment pattern region and corner */
  	int			align_region;
  	struct quirc_point	align;
  
  	/* Timing pattern endpoints */
  	struct quirc_point	tpep[3];
  	int			hscan;
  	int			vscan;
  
  	/* Grid size and perspective transform */
  	int			grid_size;
  	double			c[QUIRC_PERSPECTIVE_PARAMS];
  };
  
  struct quirc {
  	uint8_t			*image;
  	int			w;
  	int			h;
  
  	int			num_regions;
  	struct quirc_region	regions[QUIRC_MAX_REGIONS];
  
  	int			num_capstones;
  	struct quirc_capstone	capstones[QUIRC_MAX_CAPSTONES];
  
  	int			num_grids;
  	struct quirc_grid	grids[QUIRC_MAX_GRIDS];
  };
  
  /************************************************************************
   * QR-code version information database
   */
  
  #define QUIRC_MAX_VERSION     40
  #define QUIRC_MAX_ALIGNMENT   7
  
  struct quirc_rs_params {
  	int             bs; /* Block size */
  	int             dw; /* Data words */
  	int             ce; /* Correctable errors */
  };
  
  struct quirc_version_info {
  	int				data_bytes;
  	int				apat[QUIRC_MAX_ALIGNMENT];
  	struct quirc_rs_params          ecc[4];
  };
  
  extern const struct quirc_version_info quirc_version_db[QUIRC_MAX_VERSION + 1];
  
  #endif
  