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x31��blob 12584�<?php /* * PHP QR Code encoder * * Masking * * Based on libqrencode C library distributed under LGPL 2.1 * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net> * * PHP QR Code is distributed under LGPL 3 * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 3 of the License, or any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA / define('N1', 3); define('N2', 3); define('N3', 40); define('N4', 10); class QRmask { public $runLength = array(); //---------------------------------------------------------------------- public function __construct() { $this->runLength = array_fill(0, QRSPEC_WIDTH_MAX + 1, 0); } //---------------------------------------------------------------------- public function writeFormatInformation($width, &$frame, $mask, $level) { $blacks = 0; $format = QRspec::getFormatInfo($mask, $level); for($i=0; $i<8; $i++) { if($format & 1) { $blacks += 2; $v = 0x85; } else { $v = 0x84; } $frame[8][$width - 1 - $i] = chr($v); if($i < 6) { $frame[$i][8] = chr($v); } else { $frame[$i + 1][8] = chr($v); } $format = $format >> 1; } for($i=0; $i<7; $i++) { if($format & 1) { $blacks += 2; $v = 0x85; } else { $v = 0x84; } $frame[$width - 7 + $i][8] = chr($v); if($i == 0) { $frame[8][7] = chr($v); } else { $frame[8][6 - $i] = chr($v); } $format = $format >> 1; } return $blacks; } //---------------------------------------------------------------------- public function mask0($x, $y) { return ($x+$y)&1; } public function mask1($x, $y) { return ($y&1); } public function mask2($x, $y) { return ($x%3); } public function mask3($x, $y) { return ($x+$y)%3; } public function mask4($x, $y) { return (((int)($y/2))+((int)($x/3)))&1; } public function mask5($x, $y) { return (($x$y)&1)+($x$y)%3; } public function mask6($x, $y) { return ((($x$y)&1)+($x$y)%3)&1; } public function mask7($x, $y) { return ((($x$y)%3)+(($x+$y)&1))&1; } //---------------------------------------------------------------------- private function generateMaskNo($maskNo, $width, $frame) { $bitMask = array_fill(0, $width, array_fill(0, $width, 0)); for($y=0; $y<$width; $y++) { for($x=0; $x<$width; $x++) { if(ord($frame[$y][$x]) & 0x80) { $bitMask[$y][$x] = 0; } else { $maskFunc = call_user_func(array($this, 'mask'.$maskNo), $x, $y); $bitMask[$y][$x] = ($maskFunc == 0)?1:0; } } } return $bitMask; } //---------------------------------------------------------------------- public static function serial($bitFrame) { $codeArr = array(); foreach ($bitFrame as $line) $codeArr[] = join('', $line); return gzcompress(join("\n", $codeArr), 9); } //---------------------------------------------------------------------- public static function unserial($code) { $codeArr = array(); $codeLines = explode("\n", gzuncompress($code)); foreach ($codeLines as $line) $codeArr[] = str_split($line); return $codeArr; } //---------------------------------------------------------------------- public function makeMaskNo($maskNo, $width, $s, &$d, $maskGenOnly = false) { $b = 0; $bitMask = array(); $fileName = QR_CACHE_DIR.'mask_'.$maskNo.DIRECTORY_SEPARATOR.'mask_'.$width.'_'.$maskNo.'.dat'; if (QR_CACHEABLE) { if (file_exists($fileName)) { $bitMask = self::unserial(file_get_contents($fileName)); } else { $bitMask = $this->generateMaskNo($maskNo, $width, $s, $d); if (!file_exists(QR_CACHE_DIR.'mask_'.$maskNo)) mkdir(QR_CACHE_DIR.'mask_'.$maskNo); file_put_contents($fileName, self::serial($bitMask)); } } else { $bitMask = $this->generateMaskNo($maskNo, $width, $s, $d); } if ($maskGenOnly) return; $d = $s; for($y=0; $y<$width; $y++) { for($x=0; $x<$width; $x++) { if($bitMask[$y][$x] == 1) { $d[$y][$x] = chr(ord($s[$y][$x]) ^ (int)$bitMask[$y][$x]); } $b += (int)(ord($d[$y][$x]) & 1); } } return $b; } //---------------------------------------------------------------------- public function makeMask($width, $frame, $maskNo, $level) { $masked = array_fill(0, $width, str_repeat("\0", $width)); $this->makeMaskNo($maskNo, $width, $frame, $masked); $this->writeFormatInformation($width, $masked, $maskNo, $level); return $masked; } //---------------------------------------------------------------------- public function calcN1N3($length) { $demerit = 0; for($i=0; $i<$length; $i++) { if($this->runLength[$i] >= 5) { $demerit += (N1 + ($this->runLength[$i] - 5)); } if($i & 1) { if(($i >= 3) && ($i < ($length-2)) && ($this->runLength[$i] % 3 == 0)) { $fact = (int)($this->runLength[$i] / 3); if(($this->runLength[$i-2] == $fact) && ($this->runLength[$i-1] == $fact) && ($this->runLength[$i+1] == $fact) && ($this->runLength[$i+2] == $fact)) { if(($this->runLength[$i-3] < 0) \|\| ($this->runLength[$i-3] >= (4 * $fact))) { $demerit += N3; } else if((($i+3) >= $length) \|\| ($this->runLength[$i+3] >= (4 * $fact))) { $demerit += N3; } } } } } return $demerit; } //---------------------------------------------------------------------- public function evaluateSymbol($width, $frame) { $head = 0; $demerit = 0; for($y=0; $y<$width; $y++) { $head = 0; $this->runLength[0] = 1; $frameY = $frame[$y]; if ($y>0) $frameYM = $frame[$y-1]; for($x=0; $x<$width; $x++) { if(($x > 0) && ($y > 0)) { $b22 = ord($frameY[$x]) & ord($frameY[$x-1]) & ord($frameYM[$x]) & ord($frameYM[$x-1]); $w22 = ord($frameY[$x]) \| ord($frameY[$x-1]) \| ord($frameYM[$x]) \| ord($frameYM[$x-1]); if(($b22 \| ($w22 ^ 1))&1) { $demerit += N2; } } if(($x == 0) && (ord($frameY[$x]) & 1)) { $this->runLength[0] = -1; $head = 1; $this->runLength[$head] = 1; } else if($x > 0) { if((ord($frameY[$x]) ^ ord($frameY[$x-1])) & 1) { $head++; $this->runLength[$head] = 1; } else { $this->runLength[$head]++; } } } $demerit += $this->calcN1N3($head+1); } for($x=0; $x<$width; $x++) { $head = 0; $this->runLength[0] = 1; for($y=0; $y<$width; $y++) { if($y == 0 && (ord($frame[$y][$x]) & 1)) { $this->runLength[0] = -1; $head = 1; $this->runLength[$head] = 1; } else if($y > 0) { if((ord($frame[$y][$x]) ^ ord($frame[$y-1][$x])) & 1) { $head++; $this->runLength[$head] = 1; } else { $this->runLength[$head]++; } } } $demerit += $this->calcN1N3($head+1); } return $demerit; } //---------------------------------------------------------------------- public function mask($width, $frame, $level) { $minDemerit = PHP_INT_MAX; $bestMaskNum = 0; $bestMask = array(); $checked_masks = array(0,1,2,3,4,5,6,7); if (QR_FIND_FROM_RANDOM !== false) { $howManuOut = 8-(QR_FIND_FROM_RANDOM % 9); for ($i = 0; $i < $howManuOut; $i++) { $remPos = rand (0, count($checked_masks)-1); unset($checked_masks[$remPos]); $checked_masks = array_values($checked_masks); } } $bestMask = $frame; foreach($checked_masks as $i) { $mask = array_fill(0, $width, str_repeat("\0", $width)); $demerit = 0; $blacks = 0; $blacks = $this->makeMaskNo($i, $width, $frame, $mask); $blacks += $this->writeFormatInformation($width, $mask, $i, $level); $blacks = (int)(100 * $blacks / ($width * $width)); $demerit = (int)((int)(abs($blacks - 50) / 5) * N4); $demerit += $this->evaluateSymbol($width, $mask); if($demerit < $minDemerit) { $minDemerit = $demerit; $bestMask = $mask; $bestMaskNum = $i; } } return $bestMask; } //---------------------------------------------------------------------- } <�p