define('QR_MODE_NUL', -1);
define('QR_MODE_NUM', 0);
define('QR_MODE_AN', 1);
define('QR_MODE_8', 2);
define('QR_MODE_KANJI', 3);
define('QR_MODE_STRUCTURE', 4);
// Levels of error correction.
define('QR_ECLEVEL_L', 0);
define('QR_ECLEVEL_M', 1);
define('QR_ECLEVEL_Q', 2);
define('QR_ECLEVEL_H', 3);
// Supported output formats
define('QR_FORMAT_TEXT', 0);
define('QR_FORMAT_PNG', 1);
class qrstr {
public static function set(&$srctab, $x, $y, $repl, $replLen = false) {
$srctab[$y] = substr_replace($srctab[$y], ($replLen !== false)?substr($repl,0,$replLen):$repl, $x, ($replLen !== false)?$replLen:strlen($repl));
}
}
define('QR_CACHEABLE', false); // use cache - more disk reads but less CPU power, masks and format templates are stored there
define('QR_CACHE_DIR', false); // used when QR_CACHEABLE === true
define('QR_LOG_DIR', false); // default error logs dir
define('QR_FIND_BEST_MASK', true); // if true, estimates best mask (spec. default, but extremally slow; set to false to significant performance boost but (propably) worst quality code
define('QR_FIND_FROM_RANDOM', 2); // if false, checks all masks available, otherwise value tells count of masks need to be checked, mask id are got randomly
define('QR_DEFAULT_MASK', 2); // when QR_FIND_BEST_MASK === false
define('QR_PNG_MAXIMUM_SIZE', 1024); // maximum allowed png image width (in pixels), tune to make sure GD and PHP can handle such big images
class QRtools {
public static function binarize($frame){
$len = count($frame);
foreach ($frame as &$frameLine) {
for($i=0; $i<$len; $i++) {
$frameLine[$i] = (ord($frameLine[$i])&1)?'1':'0';
}
}
return $frame;
}
public static function tcpdfBarcodeArray($code, $mode = 'QR,L', $tcPdfVersion = '4.5.037'){
$barcode_array = array();
if (!is_array($mode))
$mode = explode(',', $mode);
$eccLevel = 'L';
if (count($mode) > 1) {
$eccLevel = $mode[1];
}
$qrTab = QRcode::text($code, false, $eccLevel);
$size = count($qrTab);
$barcode_array['num_rows'] = $size;
$barcode_array['num_cols'] = $size;
$barcode_array['bcode'] = array();
foreach ($qrTab as $line) {
$arrAdd = array();
foreach(str_split($line) as $char)
$arrAdd[] = ($char=='1')?1:0;
$barcode_array['bcode'][] = $arrAdd;
}
return $barcode_array;
}
public static function clearCache(){
self::$frames = array();
}
public static function buildCache(){
QRtools::markTime('before_build_cache');
$mask = new QRmask();
for ($a=1; $a <= QRSPEC_VERSION_MAX; $a++) {
$frame = QRspec::newFrame($a);
if (QR_IMAGE) {
$fileName = QR_CACHE_DIR.'frame_'.$a.'.png';
QRimage::png(self::binarize($frame), $fileName, 1, 0);
}
$width = count($frame);
$bitMask = array_fill(0, $width, array_fill(0, $width, 0));
for ($maskNo=0; $maskNo<8; $maskNo++)
$mask->makeMaskNo($maskNo, $width, $frame, $bitMask, true);
}
QRtools::markTime('after_build_cache');
}
public static function log($outfile, $err){
if (QR_LOG_DIR !== false) {
if ($err != '') {
if ($outfile !== false) {
file_put_contents(QR_LOG_DIR.basename($outfile).'-errors.txt', date('Y-m-d H:i:s').': '.$err, FILE_APPEND);
} else {
file_put_contents(QR_LOG_DIR.'errors.txt', date('Y-m-d H:i:s').': '.$err, FILE_APPEND);
}
}
}
}
public static function dumpMask($frame){
$width = count($frame);
for($y=0;$y<$width;$y++) {
for($x=0;$x<$width;$x++) {
echo ord($frame[$y][$x]).',';
}
}
}
public static function markTime($markerId){
list($usec, $sec) = explode(" ", microtime());
$time = ((float)$usec + (float)$sec);
if (!isset($GLOBALS['qr_time_bench']))
$GLOBALS['qr_time_bench'] = array();
$GLOBALS['qr_time_bench'][$markerId] = $time;
}
public static function timeBenchmark(){
self::markTime('finish');
$lastTime = 0;
$startTime = 0;
$p = 0;
echo '<table cellpadding="3" cellspacing="1">
<thead><tr style="border-bottom:1px solid silver"><td colspan="2" style="text-align:center">BENCHMARK</td></tr></thead>
<tbody>';
foreach($GLOBALS['qr_time_bench'] as $markerId=>$thisTime) {
if ($p > 0) {
echo '<tr><th style="text-align:right">till '.$markerId.': </th><td>'.number_format($thisTime-$lastTime, 6).'s</td></tr>';
} else {
$startTime = $thisTime;
}
$p++;
$lastTime = $thisTime;
}
echo '</tbody><tfoot>
<tr style="border-top:2px solid black"><th style="text-align:right">TOTAL: </th><td>'.number_format($lastTime-$startTime, 6).'s</td></tr>
</tfoot>
</table>';
}
}
//##########################################################################
QRtools