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qrspec.php
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qrspec.php
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<?php
/*
* PHP QR Code encoder
*
* QR Code specifications
*
* Based on libqrencode C library distributed under LGPL 2.1
* Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <[email protected]>
*
* PHP QR Code is distributed under LGPL 3
* Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
*
* The following data / specifications are taken from
* "Two dimensional symbol -- QR-code -- Basic Specification" (JIS X0510:2004)
* or
* "Automatic identification and data capture techniques --
* QR Code 2005 bar code symbology specification" (ISO/IEC 18004:2006)
*
* 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('QRSPEC_VERSION_MAX', 40);
define('QRSPEC_WIDTH_MAX', 177);
define('QRCAP_WIDTH', 0);
define('QRCAP_WORDS', 1);
define('QRCAP_REMINDER', 2);
define('QRCAP_EC', 3);
class QRspec {
public static $capacity = array(
array( 0, 0, 0, array( 0, 0, 0, 0)),
array( 21, 26, 0, array( 7, 10, 13, 17)), // 1
array( 25, 44, 7, array( 10, 16, 22, 28)),
array( 29, 70, 7, array( 15, 26, 36, 44)),
array( 33, 100, 7, array( 20, 36, 52, 64)),
array( 37, 134, 7, array( 26, 48, 72, 88)), // 5
array( 41, 172, 7, array( 36, 64, 96, 112)),
array( 45, 196, 0, array( 40, 72, 108, 130)),
array( 49, 242, 0, array( 48, 88, 132, 156)),
array( 53, 292, 0, array( 60, 110, 160, 192)),
array( 57, 346, 0, array( 72, 130, 192, 224)), //10
array( 61, 404, 0, array( 80, 150, 224, 264)),
array( 65, 466, 0, array( 96, 176, 260, 308)),
array( 69, 532, 0, array( 104, 198, 288, 352)),
array( 73, 581, 3, array( 120, 216, 320, 384)),
array( 77, 655, 3, array( 132, 240, 360, 432)), //15
array( 81, 733, 3, array( 144, 280, 408, 480)),
array( 85, 815, 3, array( 168, 308, 448, 532)),
array( 89, 901, 3, array( 180, 338, 504, 588)),
array( 93, 991, 3, array( 196, 364, 546, 650)),
array( 97, 1085, 3, array( 224, 416, 600, 700)), //20
array(101, 1156, 4, array( 224, 442, 644, 750)),
array(105, 1258, 4, array( 252, 476, 690, 816)),
array(109, 1364, 4, array( 270, 504, 750, 900)),
array(113, 1474, 4, array( 300, 560, 810, 960)),
array(117, 1588, 4, array( 312, 588, 870, 1050)), //25
array(121, 1706, 4, array( 336, 644, 952, 1110)),
array(125, 1828, 4, array( 360, 700, 1020, 1200)),
array(129, 1921, 3, array( 390, 728, 1050, 1260)),
array(133, 2051, 3, array( 420, 784, 1140, 1350)),
array(137, 2185, 3, array( 450, 812, 1200, 1440)), //30
array(141, 2323, 3, array( 480, 868, 1290, 1530)),
array(145, 2465, 3, array( 510, 924, 1350, 1620)),
array(149, 2611, 3, array( 540, 980, 1440, 1710)),
array(153, 2761, 3, array( 570, 1036, 1530, 1800)),
array(157, 2876, 0, array( 570, 1064, 1590, 1890)), //35
array(161, 3034, 0, array( 600, 1120, 1680, 1980)),
array(165, 3196, 0, array( 630, 1204, 1770, 2100)),
array(169, 3362, 0, array( 660, 1260, 1860, 2220)),
array(173, 3532, 0, array( 720, 1316, 1950, 2310)),
array(177, 3706, 0, array( 750, 1372, 2040, 2430)) //40
);
//----------------------------------------------------------------------
public static function getDataLength($version, $level)
{
return self::$capacity[$version][QRCAP_WORDS] - self::$capacity[$version][QRCAP_EC][$level];
}
//----------------------------------------------------------------------
public static function getECCLength($version, $level)
{
return self::$capacity[$version][QRCAP_EC][$level];
}
//----------------------------------------------------------------------
public static function getWidth($version)
{
return self::$capacity[$version][QRCAP_WIDTH];
}
//----------------------------------------------------------------------
public static function getRemainder($version)
{
return self::$capacity[$version][QRCAP_REMINDER];
}
//----------------------------------------------------------------------
public static function getMinimumVersion($size, $level)
{
for($i=1; $i<= QRSPEC_VERSION_MAX; $i++) {
$words = self::$capacity[$i][QRCAP_WORDS] - self::$capacity[$i][QRCAP_EC][$level];
if($words >= $size)
return $i;
}
return -1;
}
//######################################################################
public static $lengthTableBits = array(
array(10, 12, 14),
array( 9, 11, 13),
array( 8, 16, 16),
array( 8, 10, 12)
);
//----------------------------------------------------------------------
public static function lengthIndicator($mode, $version)
{
if ($mode == QR_MODE_STRUCTURE)
return 0;
if ($version <= 9) {
$l = 0;
} else if ($version <= 26) {
$l = 1;
} else {
$l = 2;
}
return self::$lengthTableBits[$mode][$l];
}
//----------------------------------------------------------------------
public static function maximumWords($mode, $version)
{
if($mode == QR_MODE_STRUCTURE)
return 3;
if($version <= 9) {
$l = 0;
} else if($version <= 26) {
$l = 1;
} else {
$l = 2;
}
$bits = self::$lengthTableBits[$mode][$l];
$words = (1 << $bits) - 1;
if($mode == QR_MODE_KANJI) {
$words *= 2; // the number of bytes is required
}
return $words;
}
// Error correction code -----------------------------------------------
// Table of the error correction code (Reed-Solomon block)
// See Table 12-16 (pp.30-36), JIS X0510:2004.
public static $eccTable = array(
array(array( 0, 0), array( 0, 0), array( 0, 0), array( 0, 0)),
array(array( 1, 0), array( 1, 0), array( 1, 0), array( 1, 0)), // 1
array(array( 1, 0), array( 1, 0), array( 1, 0), array( 1, 0)),
array(array( 1, 0), array( 1, 0), array( 2, 0), array( 2, 0)),
array(array( 1, 0), array( 2, 0), array( 2, 0), array( 4, 0)),
array(array( 1, 0), array( 2, 0), array( 2, 2), array( 2, 2)), // 5
array(array( 2, 0), array( 4, 0), array( 4, 0), array( 4, 0)),
array(array( 2, 0), array( 4, 0), array( 2, 4), array( 4, 1)),
array(array( 2, 0), array( 2, 2), array( 4, 2), array( 4, 2)),
array(array( 2, 0), array( 3, 2), array( 4, 4), array( 4, 4)),
array(array( 2, 2), array( 4, 1), array( 6, 2), array( 6, 2)), //10
array(array( 4, 0), array( 1, 4), array( 4, 4), array( 3, 8)),
array(array( 2, 2), array( 6, 2), array( 4, 6), array( 7, 4)),
array(array( 4, 0), array( 8, 1), array( 8, 4), array(12, 4)),
array(array( 3, 1), array( 4, 5), array(11, 5), array(11, 5)),
array(array( 5, 1), array( 5, 5), array( 5, 7), array(11, 7)), //15
array(array( 5, 1), array( 7, 3), array(15, 2), array( 3, 13)),
array(array( 1, 5), array(10, 1), array( 1, 15), array( 2, 17)),
array(array( 5, 1), array( 9, 4), array(17, 1), array( 2, 19)),
array(array( 3, 4), array( 3, 11), array(17, 4), array( 9, 16)),
array(array( 3, 5), array( 3, 13), array(15, 5), array(15, 10)), //20
array(array( 4, 4), array(17, 0), array(17, 6), array(19, 6)),
array(array( 2, 7), array(17, 0), array( 7, 16), array(34, 0)),
array(array( 4, 5), array( 4, 14), array(11, 14), array(16, 14)),
array(array( 6, 4), array( 6, 14), array(11, 16), array(30, 2)),
array(array( 8, 4), array( 8, 13), array( 7, 22), array(22, 13)), //25
array(array(10, 2), array(19, 4), array(28, 6), array(33, 4)),
array(array( 8, 4), array(22, 3), array( 8, 26), array(12, 28)),
array(array( 3, 10), array( 3, 23), array( 4, 31), array(11, 31)),
array(array( 7, 7), array(21, 7), array( 1, 37), array(19, 26)),
array(array( 5, 10), array(19, 10), array(15, 25), array(23, 25)), //30
array(array(13, 3), array( 2, 29), array(42, 1), array(23, 28)),
array(array(17, 0), array(10, 23), array(10, 35), array(19, 35)),
array(array(17, 1), array(14, 21), array(29, 19), array(11, 46)),
array(array(13, 6), array(14, 23), array(44, 7), array(59, 1)),
array(array(12, 7), array(12, 26), array(39, 14), array(22, 41)), //35
array(array( 6, 14), array( 6, 34), array(46, 10), array( 2, 64)),
array(array(17, 4), array(29, 14), array(49, 10), array(24, 46)),
array(array( 4, 18), array(13, 32), array(48, 14), array(42, 32)),
array(array(20, 4), array(40, 7), array(43, 22), array(10, 67)),
array(array(19, 6), array(18, 31), array(34, 34), array(20, 61)),//40
);
//----------------------------------------------------------------------
// CACHEABLE!!!
public static function getEccSpec($version, $level, array &$spec)
{
if (count($spec) < 5) {
$spec = array(0,0,0,0,0);
}
$b1 = self::$eccTable[$version][$level][0];
$b2 = self::$eccTable[$version][$level][1];
$data = self::getDataLength($version, $level);
$ecc = self::getECCLength($version, $level);
if($b2 == 0) {
$spec[0] = $b1;
$spec[1] = (int)($data / $b1);
$spec[2] = (int)($ecc / $b1);
$spec[3] = 0;
$spec[4] = 0;
} else {
$spec[0] = $b1;
$spec[1] = (int)($data / ($b1 + $b2));
$spec[2] = (int)($ecc / ($b1 + $b2));
$spec[3] = $b2;
$spec[4] = $spec[1] + 1;
}
}
// Alignment pattern ---------------------------------------------------
// Positions of alignment patterns.
// This array includes only the second and the third position of the
// alignment patterns. Rest of them can be calculated from the distance
// between them.
// See Table 1 in Appendix E (pp.71) of JIS X0510:2004.
public static $alignmentPattern = array(
array( 0, 0),
array( 0, 0), array(18, 0), array(22, 0), array(26, 0), array(30, 0), // 1- 5
array(34, 0), array(22, 38), array(24, 42), array(26, 46), array(28, 50), // 6-10
array(30, 54), array(32, 58), array(34, 62), array(26, 46), array(26, 48), //11-15
array(26, 50), array(30, 54), array(30, 56), array(30, 58), array(34, 62), //16-20
array(28, 50), array(26, 50), array(30, 54), array(28, 54), array(32, 58), //21-25
array(30, 58), array(34, 62), array(26, 50), array(30, 54), array(26, 52), //26-30
array(30, 56), array(34, 60), array(30, 58), array(34, 62), array(30, 54), //31-35
array(24, 50), array(28, 54), array(32, 58), array(26, 54), array(30, 58), //35-40
);
/** --------------------------------------------------------------------
* Put an alignment marker.
* @param frame
* @param width
* @param ox,oy center coordinate of the pattern
*/
public static function putAlignmentMarker(array &$frame, $ox, $oy)
{
$finder = array(
"\xa1\xa1\xa1\xa1\xa1",
"\xa1\xa0\xa0\xa0\xa1",
"\xa1\xa0\xa1\xa0\xa1",
"\xa1\xa0\xa0\xa0\xa1",
"\xa1\xa1\xa1\xa1\xa1"
);
$yStart = $oy-2;
$xStart = $ox-2;
for($y=0; $y<5; $y++) {
QRstr::set($frame, $xStart, $yStart+$y, $finder[$y]);
}
}
//----------------------------------------------------------------------
public static function putAlignmentPattern($version, &$frame, $width)
{
if($version < 2)
return;
$d = self::$alignmentPattern[$version][1] - self::$alignmentPattern[$version][0];
if($d < 0) {
$w = 2;
} else {
$w = (int)(($width - self::$alignmentPattern[$version][0]) / $d + 2);
}
if($w * $w - 3 == 1) {
$x = self::$alignmentPattern[$version][0];
$y = self::$alignmentPattern[$version][0];
self::putAlignmentMarker($frame, $x, $y);
return;
}
$cx = self::$alignmentPattern[$version][0];
for($x=1; $x<$w - 1; $x++) {
self::putAlignmentMarker($frame, 6, $cx);
self::putAlignmentMarker($frame, $cx, 6);
$cx += $d;
}
$cy = self::$alignmentPattern[$version][0];
for($y=0; $y<$w-1; $y++) {
$cx = self::$alignmentPattern[$version][0];
for($x=0; $x<$w-1; $x++) {
self::putAlignmentMarker($frame, $cx, $cy);
$cx += $d;
}
$cy += $d;
}
}
// Version information pattern -----------------------------------------
// Version information pattern (BCH coded).
// See Table 1 in Appendix D (pp.68) of JIS X0510:2004.
// size: [QRSPEC_VERSION_MAX - 6]
public static $versionPattern = array(
0x07c94, 0x085bc, 0x09a99, 0x0a4d3, 0x0bbf6, 0x0c762, 0x0d847, 0x0e60d,
0x0f928, 0x10b78, 0x1145d, 0x12a17, 0x13532, 0x149a6, 0x15683, 0x168c9,
0x177ec, 0x18ec4, 0x191e1, 0x1afab, 0x1b08e, 0x1cc1a, 0x1d33f, 0x1ed75,
0x1f250, 0x209d5, 0x216f0, 0x228ba, 0x2379f, 0x24b0b, 0x2542e, 0x26a64,
0x27541, 0x28c69
);
//----------------------------------------------------------------------
public static function getVersionPattern($version)
{
if($version < 7 || $version > QRSPEC_VERSION_MAX)
return 0;
return self::$versionPattern[$version -7];
}
// Format information --------------------------------------------------
// See calcFormatInfo in tests/test_qrspec.c (orginal qrencode c lib)
public static $formatInfo = array(
array(0x77c4, 0x72f3, 0x7daa, 0x789d, 0x662f, 0x6318, 0x6c41, 0x6976),
array(0x5412, 0x5125, 0x5e7c, 0x5b4b, 0x45f9, 0x40ce, 0x4f97, 0x4aa0),
array(0x355f, 0x3068, 0x3f31, 0x3a06, 0x24b4, 0x2183, 0x2eda, 0x2bed),
array(0x1689, 0x13be, 0x1ce7, 0x19d0, 0x0762, 0x0255, 0x0d0c, 0x083b)
);
public static function getFormatInfo($mask, $level)
{
if($mask < 0 || $mask > 7)
return 0;
if($level < 0 || $level > 3)
return 0;
return self::$formatInfo[$level][$mask];
}
// Frame ---------------------------------------------------------------
// Cache of initial frames.
public static $frames = array();
/** --------------------------------------------------------------------
* Put a finder pattern.
* @param frame
* @param width
* @param ox,oy upper-left coordinate of the pattern
*/
public static function putFinderPattern(&$frame, $ox, $oy)
{
$finder = array(
"\xc1\xc1\xc1\xc1\xc1\xc1\xc1",
"\xc1\xc0\xc0\xc0\xc0\xc0\xc1",
"\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
"\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
"\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
"\xc1\xc0\xc0\xc0\xc0\xc0\xc1",
"\xc1\xc1\xc1\xc1\xc1\xc1\xc1"
);
for($y=0; $y<7; $y++) {
QRstr::set($frame, $ox, $oy+$y, $finder[$y]);
}
}
//----------------------------------------------------------------------
public static function createFrame($version)
{
$width = self::$capacity[$version][QRCAP_WIDTH];
$frameLine = str_repeat ("\0", $width);
$frame = array_fill(0, $width, $frameLine);
// Finder pattern
self::putFinderPattern($frame, 0, 0);
self::putFinderPattern($frame, $width - 7, 0);
self::putFinderPattern($frame, 0, $width - 7);
// Separator
$yOffset = $width - 7;
for($y=0; $y<7; $y++) {
$frame[$y][7] = "\xc0";
$frame[$y][$width - 8] = "\xc0";
$frame[$yOffset][7] = "\xc0";
$yOffset++;
}
$setPattern = str_repeat("\xc0", 8);
QRstr::set($frame, 0, 7, $setPattern);
QRstr::set($frame, $width-8, 7, $setPattern);
QRstr::set($frame, 0, $width - 8, $setPattern);
// Format info
$setPattern = str_repeat("\x84", 9);
QRstr::set($frame, 0, 8, $setPattern);
QRstr::set($frame, $width - 8, 8, $setPattern, 8);
$yOffset = $width - 8;
for($y=0; $y<8; $y++,$yOffset++) {
$frame[$y][8] = "\x84";
$frame[$yOffset][8] = "\x84";
}
// Timing pattern
for($i=1; $i<$width-15; $i++) {
$frame[6][7+$i] = chr(0x90 | ($i & 1));
$frame[7+$i][6] = chr(0x90 | ($i & 1));
}
// Alignment pattern
self::putAlignmentPattern($version, $frame, $width);
// Version information
if($version >= 7) {
$vinf = self::getVersionPattern($version);
$v = $vinf;
for($x=0; $x<6; $x++) {
for($y=0; $y<3; $y++) {
$frame[($width - 11)+$y][$x] = chr(0x88 | ($v & 1));
$v = $v >> 1;
}
}
$v = $vinf;
for($y=0; $y<6; $y++) {
for($x=0; $x<3; $x++) {
$frame[$y][$x+($width - 11)] = chr(0x88 | ($v & 1));
$v = $v >> 1;
}
}
}
// and a little bit...
$frame[$width - 8][8] = "\x81";
return $frame;
}
//----------------------------------------------------------------------
public static function debug($frame, $binary_mode = false)
{
if ($binary_mode) {
foreach ($frame as &$frameLine) {
$frameLine = join('<span class="m"> </span>', explode('0', $frameLine));
$frameLine = join('██', explode('1', $frameLine));
}
?>
<style>
.m { background-color: white; }
</style>
<?php
echo '<pre><tt><br/ ><br/ ><br/ > ';
echo join("<br/ > ", $frame);
echo '</tt></pre><br/ ><br/ ><br/ ><br/ ><br/ ><br/ >';
} else {
foreach ($frame as &$frameLine) {
$frameLine = join('<span class="m"> </span>', explode("\xc0", $frameLine));
$frameLine = join('<span class="m">▒</span>', explode("\xc1", $frameLine));
$frameLine = join('<span class="p"> </span>', explode("\xa0", $frameLine));
$frameLine = join('<span class="p">▒</span>', explode("\xa1", $frameLine));
$frameLine = join('<span class="s">◇</span>', explode("\x84", $frameLine)); //format 0
$frameLine = join('<span class="s">◆</span>', explode("\x85", $frameLine)); //format 1
$frameLine = join('<span class="x">☢</span>', explode("\x81", $frameLine)); //special bit
$frameLine = join('<span class="c"> </span>', explode("\x90", $frameLine)); //clock 0
$frameLine = join('<span class="c">◷</span>', explode("\x91", $frameLine)); //clock 1
$frameLine = join('<span class="f"> </span>', explode("\x88", $frameLine)); //version
$frameLine = join('<span class="f">▒</span>', explode("\x89", $frameLine)); //version
$frameLine = join('♦', explode("\x01", $frameLine));
$frameLine = join('⋅', explode("\0", $frameLine));
}
?>
<style>
.p { background-color: yellow; }
.m { background-color: #00FF00; }
.s { background-color: #FF0000; }
.c { background-color: aqua; }
.x { background-color: pink; }
.f { background-color: gold; }
</style>
<?php
echo "<pre><tt>";
echo join("<br/ >", $frame);
echo "</tt></pre>";
}
}
//----------------------------------------------------------------------
public static function serial($frame)
{
return gzcompress(join("\n", $frame), 9);
}
//----------------------------------------------------------------------
public static function unserial($code)
{
return explode("\n", gzuncompress($code));
}
//----------------------------------------------------------------------
public static function newFrame($version)
{
if($version < 1 || $version > QRSPEC_VERSION_MAX)
return null;
if(!isset(self::$frames[$version])) {
$fileName = QR_CACHE_DIR.'frame_'.$version.'.dat';
if (QR_CACHEABLE) {
if (file_exists($fileName)) {
self::$frames[$version] = self::unserial(file_get_contents($fileName));
} else {
self::$frames[$version] = self::createFrame($version);
file_put_contents($fileName, self::serial(self::$frames[$version]));
}
} else {
self::$frames[$version] = self::createFrame($version);
}
}
if(is_null(self::$frames[$version]))
return null;
return self::$frames[$version];
}
//----------------------------------------------------------------------
public static function rsBlockNum($spec) { return $spec[0] + $spec[3]; }
public static function rsBlockNum1($spec) { return $spec[0]; }
public static function rsDataCodes1($spec) { return $spec[1]; }
public static function rsEccCodes1($spec) { return $spec[2]; }
public static function rsBlockNum2($spec) { return $spec[3]; }
public static function rsDataCodes2($spec) { return $spec[4]; }
public static function rsEccCodes2($spec) { return $spec[2]; }
public static function rsDataLength($spec) { return ($spec[0] * $spec[1]) + ($spec[3] * $spec[4]); }
public static function rsEccLength($spec) { return ($spec[0] + $spec[3]) * $spec[2]; }
}