You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
329 lines
12 KiB
329 lines
12 KiB
5 years ago
|
<?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;
|
||
|
|
}
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------
|
||
|
|
}
|