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add conversion service from jpeg to text based on iptc data

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This commit is contained in:
Uwe Steinmann 2022-09-15 13:09:20 +02:00
parent d2eee3345f
commit aaf7733ab2
3 changed files with 79 additions and 0 deletions
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1
inc/inc.ClassConversionMgr.php
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@ -13,6 +13,7 @@
require_once("inc/inc.ClassConversionServiceExec.php");
require_once("inc/inc.ClassConversionServiceImageToImage.php");
require_once("inc/inc.ClassConversionServiceImageToText.php");
require_once("inc/inc.ClassConversionServicePdfToImage.php");
require_once("inc/inc.ClassConversionServiceTextToText.php");

75
inc/inc.ClassConversionServiceImageToText.php Normal file
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@ -0,0 +1,75 @@
<?php
/**
* Implementation of conversion service image class
*
* @category DMS
* @package SeedDMS
* @license GPL 2
* @version @version@
* @author Uwe Steinmann <uwe@steinmann.cx>
* @copyright Copyright (C) 2021 Uwe Steinmann
* @version Release: @package_version@
*/
require_once("inc/inc.ClassConversionServiceBase.php");
/**
* Implementation of conversion service image class
*
* @category DMS
* @package SeedDMS
* @author Uwe Steinmann <uwe@steinmann.cx>
* @copyright Copyright (C) 2021 Uwe Steinmann
* @version Release: @package_version@
*/
class SeedDMS_ConversionServiceImageToText extends SeedDMS_ConversionServiceBase {
/**
* timeout
*/
public $timeout;
public function __construct($from, $to) { /* {{{ */
$this->from = $from;
$this->to = $to;
} /* }}} */
public function getInfo() { /* {{{ */
return "Convert by extracting iptc data";
} /* }}} */
public function getAdditionalParams() { /* {{{ */
return [
];
} /* }}} */
/**
* Convert a pixel image into text by reading the iptc data
*
* This method uses getimagesize() to extract the data.
*/
public function convert($infile, $target = null, $params = array()) { /* {{{ */
$start = microtime(true);
$imsize = getimagesize($infile, $moreinfo);
if(!empty($moreinfo['APP13'])) {
$txt = '';
$iptcdata = iptcparse($moreinfo['APP13']);
foreach(['2#005', '2#015', '2#025', '2#105', '2#080', '2#115', '2#120'] as $key) {
if(isset($iptcdata[$key]))
$txt .= implode(' ', $iptcdata[$key])."\n";
}
$end = microtime(true);
if($this->logger) {
$this->logger->log('Conversion from '.$this->from.' to '.$this->to.' by extracting iptc took '.($end-$start).' sec.', PEAR_LOG_INFO);
}
if($target) {
file_put_contents($target, $txt);
return true;
} else {
return $txt;
}
}
return false;
} /* }}} */
}

3
inc/inc.ConversionInit.php
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@ -34,6 +34,9 @@ if(extension_loaded('gd') || extension_loaded('imagick')) {
$conversionmgr->addService(new SeedDMS_ConversionServiceImageToImage('image/gif', 'image/png'))->setLogger($logger);
}
$conversionmgr->addService(new SeedDMS_ConversionServiceImageToText('image/jpeg', 'text/plain'))->setLogger($logger);
$conversionmgr->addService(new SeedDMS_ConversionServiceImageToText('image/jpg', 'text/plain'))->setLogger($logger);
$conversionmgr->addService(new SeedDMS_ConversionServiceTextToText('text/plain', 'text/plain'))->setLogger($logger);
if(isset($GLOBALS['SEEDDMS_HOOKS']['initConversion'])) {