seeddms-code/inc/inc.ClassConversionServiceImageToImage.php
2024-03-27 19:49:52 +01:00

127 lines
3.5 KiB
PHP

<?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_ConversionServiceImageToImage extends SeedDMS_ConversionServiceBase {
/**
* timeout
*/
public $timeout;
public function __construct($from, $to) { /* {{{ */
parent::__construct();
$this->from = $from;
$this->to = $to;
$this->timeout = 5;
} /* }}} */
public function getInfo() { /* {{{ */
return "Convert with imagick or gd php functions";
} /* }}} */
public function getAdditionalParams() { /* {{{ */
return [
['name'=>'width', 'type'=>'number', 'description'=>'Width of converted image']
];
} /* }}} */
/**
* Convert a pixel image into png and scale it
*
* This method uses imagick and if not available falls back to the gd library.
*/
public function convert($infile, $target = null, $params = array()) { /* {{{ */
$start = microtime(true);
if(extension_loaded('imagick')) {
$imagick = new Imagick();
try {
if($imagick->readImage($infile)) {
if(!empty($params['width']))
$imagick->scaleImage(min((int) $params['width'], $imagick->getImageWidth()), 0);
$end = microtime(true);
if($this->logger) {
$this->logger->log('Conversion from '.$this->from.' to '.$this->to.' with imagick service took '.($end-$start).' sec.', PEAR_LOG_INFO);
}
if($target) {
return $imagick->writeImage($target);
} else {
return $imagick->getImageBlob();
}
} else {
if($this->logger) {
$this->logger->log('Conversion from '.$this->from.' to '.$this->to.' with image service failed: could not read input file.', PEAR_LOG_ERR);
}
$this->success = false;
return false;
}
} catch (ImagickException $e) {
if($this->logger) {
$this->logger->log('Conversion from '.$this->from.' to '.$this->to.' with image service failed: '.$e->getMessage(), PEAR_LOG_ERR);
}
$this->success = false;
return false;
}
} elseif(extension_loaded('gd')) {
$im = null;
switch($this->from) {
case 'image/jpeg':
case 'image/jpg':
$im = @imagecreatefromjpeg($infile);
break;
case 'image/png':
$im = @imagecreatefrompng($infile);
break;
case 'image/gif':
$im = @imagecreatefromgif($infile);
break;
}
if($im) {
$width = imagesx($im);
if(!empty($params['width']))
$im = imagescale($im, min((int) $params['width'], $width));
$end = microtime(true);
if($this->logger) {
$this->logger->log('Conversion from '.$this->from.' to '.$this->to.' with gd image service took '.($end-$start).' sec.', PEAR_LOG_INFO);
}
if($target) {
return imagepng($im, $target);
} else {
ob_start();
echo imagepng($im);
$image = ob_get_clean();
return $image;
}
} else {
if($this->logger) {
$this->logger->log('Conversion from '.$this->from.' to '.$this->to.' with image service failed: could not read input file.', PEAR_LOG_ERR);
}
$this->success = false;
return false;
}
}
return false;
} /* }}} */
}